The presence of bacteria, viruses, and fungi in the air. This term is not restricted to pathogenic organisms.
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
The state of the ATMOSPHERE over minutes to months.
The atmospheric properties, characteristics and other atmospheric phenomena especially pertaining to WEATHER or CLIMATE.
Colloids with a gaseous dispersing phase and either liquid (fog) or solid (smoke) dispersed phase; used in fumigation or in inhalation therapy; may contain propellant agents.
Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A state in which the environs of hospitals, laboratories, domestic and animal housing, work places, spacecraft, and other surroundings are under technological control with regard to air conditioning, heating, lighting, humidity, ventilation, and other ambient features. The concept includes control of atmospheric composition. (From Jane's Aerospace Dictionary, 3d ed)
Removal of moisture from a substance (chemical, food, tissue, etc.).
Water in its gaseous state. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The longterm manifestations of WEATHER. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The contribution to barometric PRESSURE of gaseous substance in equilibrium with its solid or liquid phase.
Loss of water by diffusion through the skin and by evaporation from the respiratory tract.
A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The application of heat to raise the temperature of the environment, ambient or local, or the systems for accomplishing this effect. It is distinguished from HEAT, the physical property and principle of physics.
A group of conditions that develop due to overexposure or overexertion in excessive environmental heat.
The process of exocrine secretion of the SWEAT GLANDS, including the aqueous sweat from the ECCRINE GLANDS and the complex viscous fluids of the APOCRINE GLANDS.
The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases.
Water particles that fall from the ATMOSPHERE.
The motion of air relative to the earth's surface.
The climate of a very small area.
The process of keeping pharmaceutical products in an appropriate location.
Presence of warmth or heat or a temperature notably higher than an accustomed norm.
The science of studying the characteristics of the atmosphere such as its temperature, density, winds, clouds, precipitation, and other atmospheric phenomena and aiming to account for the weather in terms of external influences and the basic laws of physics. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The measure of the level of heat of a human or animal.
Supplying a building or house, their rooms and corridors, with fresh air. The controlling of the environment thus may be in public or domestic sites and in medical or non-medical locales. (From Dorland, 28th ed)
A plant genus of the family COMMELINACEAE that is used in genotoxic bioassays.
A highly toxic, colorless, nonflammable gas. It is used as a pharmaceutical aid and antioxidant. It is also an environmental air pollutant.
The condition that results from excessive loss of water from a living organism.
A discipline or occupation concerned with the study of INSECTS, including the biology and the control of insects.
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
The processes of heating and cooling that an organism uses to control its temperature.
The destroying of all forms of life, especially microorganisms, by heat, chemical, or other means.
A class of devices combining electrical and mechanical components that have at least one of the dimensions in the micrometer range (between 1 micron and 1 millimeter). They include sensors, actuators, microducts, and micropumps.
Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or material. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS.
The reproductive elements of lower organisms, such as BACTERIA; FUNGI; and cryptogamic plants.
The loss of water vapor by plants to the atmosphere. It occurs mainly from the leaves through pores (stomata) whose primary function is gas exchange. The water is replaced by a continuous column of water moving upwards from the roots within the xylem vessels. (Concise Dictionary of Biology, 1990)
The sensation of cold, heat, coolness, and warmth as detected by THERMORECEPTORS.
The chemical and physical integrity of a pharmaceutical product.
The TEMPERATURE at the outer surface of the body.
Inactivation of viruses by non-immune related techniques. They include extremes of pH, HEAT treatment, ultraviolet radiation, IONIZING RADIATION; DESICCATION; ANTISEPTICS; DISINFECTANTS; organic solvents, and DETERGENTS.
Adaptation to a new environment or to a change in the old.
Nitrogen oxide (NO2). A highly poisonous gas. Exposure produces inflammation of lungs that may only cause slight pain or pass unnoticed, but resulting edema several days later may cause death. (From Merck, 11th ed) It is a major atmospheric pollutant that is able to absorb UV light that does not reach the earth's surface.
A phase transition from liquid state to gas state, which is affected by Raoult's law. It can be accomplished by fractional distillation.
Insulated enclosures in which temperature, humidity, and other environmental conditions can be regulated at levels optimal for growth, hatching, reproduction, or metabolic reactions.
An absence of warmth or heat or a temperature notably below an accustomed norm.
Method of tissue preparation in which the tissue specimen is frozen and then dehydrated at low temperature in a high vacuum. This method is also used for dehydrating pharmaceutical and food products.
The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed)
A space which has limited openings for entry and exit combined with unfavorable natural ventilation such as CAVES, refrigerators, deep tunnels, pipelines, sewers, silos, tanks, vats, mines, deep trenches or pits, vaults, manholes, chimneys, etc.
The maintenance of certain aspects of the environment within a defined space to facilitate the function of that space; aspects controlled include air temperature and motion, radiant heat level, moisture, and concentration of pollutants such as dust, microorganisms, and gases. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A climate which is typical of equatorial and tropical regions, i.e., one with continually high temperatures with considerable precipitation, at least during part of the year. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Substances made up of an aggregation of small particles, as that obtained by grinding or trituration of a solid drug. In pharmacy it is a form in which substances are administered. (From Dorland, 28th ed)
Usually inert substances added to a prescription in order to provide suitable consistency to the dosage form. These include binders, matrix, base or diluent in pills, tablets, creams, salves, etc.
Inanimate objects that carry pathogenic microorganisms and thus can serve as the source of infection. Microorganisms typically survive on fomites for minutes or hours. Common fomites include CLOTHING, tissue paper, hairbrushes, and COOKING AND EATING UTENSILS.
Arthropods of the class ARACHNIDA, order Araneae. Except for mites and ticks, spiders constitute the largest order of arachnids, with approximately 37,000 species having been described. The majority of spiders are harmless, although some species can be regarded as moderately harmful since their bites can lead to quite severe local symptoms. (From Barnes, Invertebrate Zoology, 5th ed, p508; Smith, Insects and Other Arthropods of Medical Importance, 1973, pp424-430)
The presence of contaminants or pollutant substances in the air (AIR POLLUTANTS) that interfere with human health or welfare, or produce other harmful environmental effects. The substances may include GASES; PARTICULATE MATTER; or volatile ORGANIC CHEMICALS.
Observation and acquisition of physical data from a distance by viewing and making measurements from a distance or receiving transmitted data from observations made at distant location.
Methods of creating machines and devices.
Fabric or other material used to cover the body.
Relating to the size of solids.
Closable openings in the epidermis of plants on the underside of leaves. They allow the exchange of gases between the internal tissues of the plant and the outside atmosphere.
The motion of air currents.
Elements of limited time intervals, contributing to particular results or situations.
Collective name for a group of external MECHANORECEPTORS and chemoreceptors manifesting as sensory structures in ARTHROPODS. They include cuticular projections (setae, hairs, bristles), pores, and slits.
The unstable triatomic form of oxygen, O3. It is a powerful oxidant that is produced for various chemical and industrial uses. Its production is also catalyzed in the ATMOSPHERE by ULTRAVIOLET RAY irradiation of oxygen or other ozone precursors such as VOLATILE ORGANIC COMPOUNDS and NITROGEN OXIDES. About 90% of the ozone in the atmosphere exists in the stratosphere (STRATOSPHERIC OZONE).
Clothing designed to protect the individual against possible exposure to known hazards.
The contamination of indoor air.
The pressure at any point in an atmosphere due solely to the weight of the atmospheric gases above the point concerned.
Materials that readily absorb moisture from their surroundings.
A phenomenon in which the surface of a liquid where it contacts a solid is elevated or depressed, because of the relative attraction of the molecules of the liquid for each other and for those of the solid. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air pressure within a closed environment.
Supplies used in building.
Particles of any solid substance, generally under 30 microns in size, often noted as PM30. There is special concern with PM1 which can get down to PULMONARY ALVEOLI and induce MACROPHAGE ACTIVATION and PHAGOCYTOSIS leading to FOREIGN BODY REACTION and LUNG DISEASES.
The application of scientific knowledge or technology to pharmacy and the pharmaceutical industry. It includes methods, techniques, and instrumentation in the manufacture, preparation, compounding, dispensing, packaging, and storing of drugs and other preparations used in diagnostic and determinative procedures, and in the treatment of patients.
Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)
The application of smoke, vapor, or gas for the purpose of disinfecting or destroying pests or microorganisms.
An order of fish including smelts, galaxiids, and salamanderfish.
Electrically powered devices that are intended to assist in the maintenance of the thermal balance of infants, principally by controlling the air temperature and humidity in an enclosure. (from UMDNS, 1999)
Chemistry dealing with the composition and preparation of agents having PHARMACOLOGIC ACTIONS or diagnostic use.
The preparation, mixing, and assembling of a drug. (From Remington, The Science and Practice of Pharmacy, 19th ed, p1814)
The gaseous envelope surrounding a planet or similar body. (From Random House Unabridged Dictionary, 2d ed)
Any arthropod of the subclass ACARI except the TICKS. They are minute animals related to the spiders, usually having transparent or semitransparent bodies. They may be parasitic on humans and domestic animals, producing various irritations of the skin (MITE INFESTATIONS). Many mite species are important to human and veterinary medicine as both parasite and vector. Mites also infest plants.
Collection, analysis, and interpretation of data about the frequency, distribution, and consequences of disease or health conditions, for use in the planning, implementing, and evaluating public health programs.
The external elements and conditions which surround, influence, and affect the life and development of an organism or population.
A kingdom of eukaryotic, heterotrophic organisms that live parasitically as saprobes, including MUSHROOMS; YEASTS; smuts, molds, etc. They reproduce either sexually or asexually, and have life cycles that range from simple to complex. Filamentous fungi, commonly known as molds, refer to those that grow as multicellular colonies.
Measuring instruments for determining the temperature of matter. Most thermometers used in the field of medicine are designed for measuring body temperature or for use in the clinical laboratory. (From UMDNS, 1999)
A continuous protein fiber consisting primarily of FIBROINS. It is synthesized by a variety of INSECTS and ARACHNIDS.
Disciplines that apply sciences to law. Forensic sciences include a wide range of disciplines, such as FORENSIC TOXICOLOGY; FORENSIC ANTHROPOLOGY; FORENSIC MEDICINE; FORENSIC DENTISTRY; and others.
One of the PENICILLINS which is resistant to PENICILLINASE.
Technique whereby the weight of a sample can be followed over a period of time while its temperature is being changed (usually increased at a constant rate).
The functions and properties of living organisms, including both the physical and chemical factors and processes, supporting life in single- or multi-cell organisms from their origin through the progression of life.
Corneal and conjunctival dryness due to deficient tear production, predominantly in menopausal and post-menopausal women. Filamentary keratitis or erosion of the conjunctival and corneal epithelium may be caused by these disorders. Sensation of the presence of a foreign body in the eye and burning of the eyes may occur.
A large, subclass of arachnids comprising the MITES and TICKS, including parasites of plants, animals, and humans, as well as several important disease vectors.
The fertilizing element of plants that contains the male GAMETOPHYTES.
A group of symptoms that are two- to three-fold more common in those who work in large, energy-efficient buildings, associated with an increased frequency of headaches, lethargy, and dry skin. Clinical manifestations include hypersensitivity pneumonitis (ALVEOLITIS, EXTRINSIC ALLERGIC); allergic rhinitis (RHINITIS, ALLERGIC, PERENNIAL); ASTHMA; infections, skin eruptions, and mucous membrane irritation syndromes. Current usage tends to be less restrictive with regard to the type of building and delineation of complaints. (From Segen, Dictionary of Modern Medicine, 1992)
Respirators to protect individuals from breathing air contaminated with harmful dusts, fogs, fumes, mists, gases, smokes, sprays, or vapors.
Devices that control the supply of electric current for running electrical equipment.
Barriers used to separate and remove PARTICULATE MATTER from air.
The process of laying or shedding fully developed eggs (OVA) from the female body. The term is usually used for certain INSECTS or FISHES with an organ called ovipositor where eggs are stored or deposited before expulsion from the body.
The name of two islands of the West Indies, separated by a narrow channel. Their capital is Basse-Terre. They were discovered by Columbus in 1493, occupied by the French in 1635, held by the British at various times between 1759 and 1813, transferred to Sweden in 1813, and restored to France in 1816. Its status was changed from colony to a French overseas department in 1946. Columbus named it in honor of the monastery of Santa Maria de Guadalupe in Spain. (From Webster's New Geographical Dictionary, 1988, p470 & Room, Brewer's Dictionary of Names, 1992, p221)
A clinical syndrome caused by heat stress, such as over-exertion in a hot environment or excessive exposure to sun. It is characterized by SWEATING, water (volume) depletion, salt depletion, cool clammy skin, NAUSEA, and HEADACHE.
A plant genus of the family MALVACEAE. It is the source of COTTON FIBER; COTTONSEED OIL, which is used for cooking, and GOSSYPOL. The economically important cotton crop is a major user of agricultural PESTICIDES.
Solid dosage forms, of varying weight, size, and shape, which may be molded or compressed, and which contain a medicinal substance in pure or diluted form. (Dorland, 28th ed)
Reproductive bodies produced by fungi.
Insects of the order Dictyoptera comprising several families including Blaberidae, BLATTELLIDAE, Blattidae (containing the American cockroach PERIPLANETA americana), Cryptocercidae, and Polyphagidae.
The process of protecting various samples of biological material.
Living facilities for humans.
A distribution function used to describe the occurrence of rare events or to describe the sampling distribution of isolated counts in a continuum of time or space.
The hair of SHEEP or other animals that is used for weaving.
A type of climate characterized by insufficient moisture to support appreciable plant life. It is a climate of extreme aridity, usually of extreme heat, and of negligible rainfall. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A polymer prepared from polyvinyl acetates by replacement of the acetate groups with hydroxyl groups. It is used as a pharmaceutic aid and ophthalmic lubricant as well as in the manufacture of surface coatings artificial sponges, cosmetics, and other products.
Containers, packaging, and packaging materials for drugs and BIOLOGICAL PRODUCTS. These include those in ampule, capsule, tablet, solution or other forms. Packaging includes immediate-containers, secondary-containers, and cartons. In the United States, such packaging is controlled under the Federal Food, Drug, and Cosmetic Act which also stipulates requirements for tamper-resistance and child-resistance. Similar laws govern use elsewhere. (From Code of Federal Regulations, 21 CFR 1 Section 210, 1993) DRUG LABELING is also available.
Tablets coated with material that delays release of the medication until after they leave the stomach. (Dorland, 28th ed)
Insects that transmit infective organisms from one host to another or from an inanimate reservoir to an animate host.
El Nino-Southern Oscillation or ENSO is a cycle of extreme alternating warm El Niño and cold La Nina events which is the dominant year-to-year climate pattern on Earth. Both terms refer to large-scale changes in sea-surface temperature across the eastern tropical Pacific. ENSO is associated with a heightened risk of certain vector-borne diseases. (From, accessed 5/12/2020)
Asthma attacks following a period of exercise. Usually the induced attack is short-lived and regresses spontaneously. The magnitude of postexertional airway obstruction is strongly influenced by the environment in which exercise is performed (i.e. inhalation of cold air during physical exertion markedly augments the severity of the airway obstruction; conversely, warm humid air blunts or abolishes it).
The immature stage in the life cycle of those orders of insects characterized by gradual metamorphosis, in which the young resemble the imago in general form of body, including compound eyes and external wings; also the 8-legged stage of mites and ticks that follows the first moult.
Techniques using energy such as radio frequency, infrared light, laser light, visible light, or acoustic energy to transfer information without the use of wires, over both short and long distances.
A property of the surface of an object that makes it stick to another surface.
The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Number of individuals in a population relative to space.
Methylester of cellulose. Methylcellulose is used as an emulsifying and suspending agent in cosmetics, pharmaceutics and the chemical industry. It is used therapeutically as a bulk laxative.
The quality or state of being wettable or the degree to which something can be wet. This is also the ability of any solid surface to be wetted when in contact with a liquid whose surface tension is reduced so that the liquid spreads over the surface of the solid.
A plant genus of the family ARALIACEAE. Members contain hederin (olean-12-ene) type TRITERPENES.
The fluid excreted by the SWEAT GLANDS. It consists of water containing sodium chloride, phosphate, urea, ammonia, and other waste products.
A polysaccharide with glucose units linked as in CELLOBIOSE. It is the chief constituent of plant fibers, cotton being the purest natural form of the substance. As a raw material, it forms the basis for many derivatives used in chromatography, ion exchange materials, explosives manufacturing, and pharmaceutical preparations.
The surface of a structure upon which one stands or walks.
Total or partial excision of the larynx.
The study of microorganisms living in a variety of environments (air, soil, water, etc.) and their pathogenic relationship to other organisms including man.
Characteristics or attributes of the outer boundaries of objects, including molecules.
Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.
Experimental devices used in inhalation studies in which a person or animal is either partially or completely immersed in a chemically controlled atmosphere.
Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed)
A vertical distance measured from a known level on the surface of a planet or other celestial body.
Seedless nonflowering plants of the class Filicinae. They reproduce by spores that appear as dots on the underside of feathery fronds. In earlier classifications the Pteridophyta included the club mosses, horsetails, ferns, and various fossil groups. In more recent classifications, pteridophytes and spermatophytes (seed-bearing plants) are classified in the Subkingdom Tracheobionta (also known as Tracheophyta).
Mechanical devices used to produce or assist pulmonary ventilation.
Ability of a microbe to survive under given conditions. This can also be related to a colony's ability to replicate.
Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.
Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
The encapsulated embryos of flowering plants. They are used as is or for animal feed because of the high content of concentrated nutrients like starches, proteins, and fats. Rapeseed, cottonseed, and sunflower seed are also produced for the oils (fats) they yield.
A large or important municipality of a country, usually a major metropolitan center.
A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.
The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.
Technique by which phase transitions of chemical reactions can be followed by observation of the heat absorbed or liberated.
Completed forms of the pharmaceutical preparation in which prescribed doses of medication are included. They are designed to resist action by gastric fluids, prevent vomiting and nausea, reduce or alleviate the undesirable taste and smells associated with oral administration, achieve a high concentration of drug at target site, or produce a delayed or long-acting drug effect.
A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
Substances that cause the adherence of two surfaces. They include glues (properly collagen-derived adhesives), mucilages, sticky pastes, gums, resins, or latex.
Behavioral responses or sequences associated with eating including modes of feeding, rhythmic patterns of eating, and time intervals.
The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants.
Architecture, exterior and interior design, and construction of facilities other than hospitals, e.g., dental schools, medical schools, ambulatory care clinics, and specified units of health care facilities. The concept also includes architecture, design, and construction of specialized contained, controlled, or closed research environments including those of space labs and stations.
A highly reactive aldehyde gas formed by oxidation or incomplete combustion of hydrocarbons. In solution, it has a wide range of uses: in the manufacture of resins and textiles, as a disinfectant, and as a laboratory fixative or preservative. Formaldehyde solution (formalin) is considered a hazardous compound, and its vapor toxic. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p717)
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria found in soil, water, food, and clinical specimens. It is a prominent opportunistic pathogen for hospitalized patients.
The pattern of any process, or the interrelationship of phenomena, which affects growth or change within a population.
The placing of a body or a part thereof into a liquid.
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
Materials that have a limited and usually variable electrical conductivity. They are particularly useful for the production of solid-state electronic devices.
Antigenic characteristics and DNA fingerprint patterns identified from blood stains. Their primary value is in criminal cases.
A species of mosquito in the genus Anopheles and the principle vector of MALARIA in Africa.
The consumption of liquids.
Imaging the temperatures in a material, or in the body or an organ. Imaging is based on self-emanating infrared radiation (HEAT WAVES), or on changes in properties of the material or tissue that vary with temperature, such as ELASTICITY; MAGNETIC FIELD; or LUMINESCENCE.
Stainless steel. A steel containing Ni, Cr, or both. It does not tarnish on exposure and is used in corrosive environments. (Grant & Hack's Chemical Dictionary, 5th ed)
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
Antigen-type substances that produce immediate hypersensitivity (HYPERSENSITIVITY, IMMEDIATE).
A species of ORTHOPOXVIRUS causing infections in humans. No infections have been reported since 1977 and the virus is now believed to be virtually extinct.
The study of the structure, preparation, properties, and reactions of carbon compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A plant genus of the family APIACEAE. The leaves are the source of cilantro and the seeds are the source of coriander, both of which are used in SPICES.
Drugs manufactured and sold with the intent to misrepresent its origin, authenticity, chemical composition, and or efficacy. Counterfeit drugs may contain inappropriate quantities of ingredients not listed on the label or package. In order to further deceive the consumer, the packaging, container, or labeling, may be inaccurate, incorrect, or fake.
The initial stages of the growth of SEEDS into a SEEDLINGS. The embryonic shoot (plumule) and embryonic PLANT ROOTS (radicle) emerge and grow upwards and downwards respectively. Food reserves for germination come from endosperm tissue within the seed and/or from the seed leaves (COTYLEDON). (Concise Dictionary of Biology, 1990)
The unfavorable effect of environmental factors (stressors) on the physiological functions of an organism. Prolonged unresolved physiological stress can affect HOMEOSTASIS of the organism, and may lead to damaging or pathological conditions.
SURFACE-ACTIVE AGENTS that induce a dispersion of undissolved material throughout a liquid.
The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.
A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Abscission-accelerating plant growth substance isolated from young cotton fruit, leaves of sycamore, birch, and other plants, and from potatoes, lemons, avocados, and other fruits.
The fluid secreted by the lacrimal glands. This fluid moistens the CONJUNCTIVA and CORNEA.
Devices that cover the nose and mouth to maintain aseptic conditions or to administer inhaled anesthetics or other gases. (UMDNS, 1999)
Procedures for collecting, preserving, and transporting of specimens sufficiently stable to provide accurate and precise results suitable for clinical interpretation.
A country spanning from central Asia to the Pacific Ocean.
The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.
Binary compounds of oxygen containing the anion O(2-). The anion combines with metals to form alkaline oxides and non-metals to form acidic oxides.
Manufacturing technology for making microscopic devices in the micrometer range (typically 1-100 micrometers), such as integrated circuits or MEMS. The process usually involves replication and parallel fabrication of hundreds or millions of identical structures using various thin film deposition techniques and carried out in environmentally-controlled clean rooms.
Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photoelectric cell, automobile horn, doorbell, and underwater sound transducer. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
An activity in which the body is propelled by moving the legs rapidly. Running is performed at a moderate to rapid pace and should be differentiated from JOGGING, which is performed at a much slower pace.
Fluids composed mainly of water found within the body.
The continuous sequence of changes undergone by living organisms during the post-embryonic developmental process, such as metamorphosis in insects and amphibians. This includes the developmental stages of apicomplexans such as the malarial parasite, PLASMODIUM FALCIPARUM.
Flavoring agent and non-nutritive sweetener.
Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).
The formation of crystalline substances from solutions or melts. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A species of ALPHAVIRUS associated with epidemic EXANTHEMA and polyarthritis in Australia.
The collective name for islands of the Pacific Ocean east of the Philippines, including the Mariana, PALAU, Caroline, Marshall, and Kiribati Islands. (From Webster's New Geographical Dictionary, 1988, p761 & Room, Brewer's Dictionary of Names, 1992, p350)
The science of breeding, feeding and care of domestic animals; includes housing and nutrition.
An acute viral infection in humans involving the respiratory tract. It is marked by inflammation of the NASAL MUCOSA; the PHARYNX; and conjunctiva, and by headache and severe, often generalized, myalgia.
Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure.
Cellular receptors which mediate the sense of temperature. Thermoreceptors in vertebrates are mostly located under the skin. In mammals there are separate types of thermoreceptors for cold and for warmth and NOCICEPTORS which detect cold or heat extreme enough to cause pain.
Procedures or techniques used to keep food from spoiling.
A collection of single-stranded RNA viruses scattered across the Bunyaviridae, Flaviviridae, and Togaviridae families whose common property is the ability to induce encephalitic conditions in infected hosts.

Effects of truss mattress upon sleep and bed climate. (1/1457)

The purpose of this study was to examine the effects of a truss mattress upon sleep and bed climate. The truss mattress which has been designed to decrease the pressure and bed climate humidity was tested. Six healthy female volunteers with a mean age of 23.3 years, served as subjects. The experiment was carried out under two conditions: a truss mattress (T) and a futon (F) (Japanese bedding). The ambient temperature and relative humidity were controlled at 19-20 degrees C, and RH 50-60% respectively. Sleep was monitored by an EEG machine and the rectal temperature, skin temperature and bed climate were also measured continuously. Subjective evaluations of bed and sleep were obtained before and after the recording sessions. No significant difference was observed in the sleep parameters and time spent in each sleep stage. Rectal temperature was significantly lower in T than F. Although there was no significant difference in bed climate over the T/F, the temperature under T/F was significantly higher in T. No significant difference was observed in subjective sleep evaluation. The subjective feeling of the mattress was significantly warmer in F than T before sleep. These results suggest that although T does not disturb the sleep parameters and the bed climate is maintained at the same level as with F, it may affect rectal temperature which can be due to low thermal insulation.  (+info)

Passive exchanges during water vapour absorption in mealworms (Tenebrio molitor): a new approach to studying the phenomenon. (2/1457)

The weights of single mealworms were continuously recorded at 20 degrees C during exposure to periods of constant humidity and to abrupt changes in atmospheric vapour pressure. Two exchange stages were recognized in each animal. Weight changes were either limited to slow losses, suggesting transpiration through the external cuticle, or showed more rapid humidity-dependent gains as well as losses. Rapid exchanges indicated that water was gained or lost through permeable barriers, from a fluid compartmet of significantly lower vapour pressure than the haemolymph, equivalent to about 90% R.H. Weight gains and losses during humidity changes provided evidence of a significant, passively exchanging fluid compartment located between the exchange surface and absorbing mechanism. Weight changes in faecal pellets following their elimination provide further support for a rectal site of atmospheric absorption.  (+info)

Effect of dampness at home in childhood on bronchial hyperreactivity in adolescence. (3/1457)

BACKGROUND: Relatively little is known about risk factors for the persistence of asthma and respiratory symptoms from childhood into adolescence, and few studies have included objective measurements to assess outcomes and exposure. METHODS: From a large cross sectional study of all 4th grade school children in Munich (mean age 10.2 years), 234 children (5%) with active asthma were identified. Of these, 155 (66%) were reinvestigated with lung function measurements and bronchial provocation three years later (mean age 13.5 years). RESULTS: At follow up 35.5% still had active asthma. Risk factors for persisting asthma symptoms in adolescence were more severe asthma (OR 4.94; CI 1.65 to 14.76; p = 0.004) or allergic triggers (OR 3.54; CI 1.41 to 8.92; p = 0.007) in childhood. Dampness was associated with increased night time wheeze and shortness of breath but not with persisting asthma. Risk factors for bronchial hyperreactivity in adolescence were bronchial hyperreactivity in childhood (p = 0.004), symptoms triggered by allergen exposure (OR 5.47; CI 1.91 to 25.20; p = 0.029), and damp housing conditions (OR 16.14; CI 3.53 to 73.73; p < 0.001). In a subgroup in whom house dust mite antigen levels in the bed were measured (70% of the sample), higher mite antigen levels were associated with bronchial hyperreactivity (OR per quartile of mite antigen 2.30; CI 1.03 to 5.12; p = 0.042). Mite antigen levels were also significantly correlated with dampness (p = 0.05). However, the effect of dampness on bronchial hyperreactivity remained significant when adjusting for mite allergen levels (OR 5.77; CI 1.17 to 28.44; p = 0.031). CONCLUSION: Dampness at home is a significant risk factor for the persistence of bronchial hyperreactivity and respiratory symptoms in children with asthma. This risk is only partly explained by exposure to house dust mite antigen.  (+info)

Core temperature and sweating onset in humans acclimated to heat given at a fixed daily time. (4/1457)

The thermoregulatory functions of rats acclimated to heat given daily at a fixed time are altered, especially during the period in which they were previously exposed to heat. In this study, we investigated the existence of similar phenomena in humans. Volunteers were exposed to an ambient temperature (Ta) of 46 degrees C and a relative humidity of 20% for 4 h (1400-1800) for 9-10 consecutive days. In the first experiment, the rectal temperatures (Tre) of six subjects were measured over 24 h at a Ta of 27 degrees C with and without heat acclimation. Heat acclimation significantly lowered Tre only between 1400 and 1800. In the second experiment, six subjects rested in a chair at a Ta of 28 degrees C and a relative humidity of 40% with both legs immersed in warm water (42 degrees C) for 30 min. The Tre and sweating rates at the forearm and chest were measured. Measurements were made in the morning (0900-1100) and afternoon (1500-1700) on the same day before and after heat acclimation. Heat acclimation shortened the sweating latency and decreased the threshold Tre for sweating. However, these changes were significant only in the afternoon. The results suggest that repeated heat exposure in humans, limited to a fixed time daily, alters the core temperature level and thermoregulatory function, especially during the period in which the subjects had previously been exposed to heat.  (+info)

Determination of hydroquinone in air by high performance liquid chromatography. (5/1457)

A method for measuring hydroquinone in air was evaluated, both in the laboratory and in the workplace. The method involved sampling the inhalable fraction onto a filter contained in a multi-holed sampler with a back-up of Tenax TA, followed by desorption into acetonitrile and analysis by High Performance Liquid Chromatography. It was shown to be effective at measuring hydroquinone over the range 0.1 to 2 times a concentration of 0.5 mg/m3 for 8 h.  (+info)

Dehydration and crystallization of trehalose and sucrose glasses containing carbonmonoxy-myoglobin. (6/1457)

We report a study wherein we contemporarily measured 1) the dehydration process of trehalose or sucrose glasses embedding carbonmonoxy-myoglobin (MbCO) and 2) the evolution of the A substates in saccharide-coated MbCO. Our results indicate that microcrystallization processes, sizeably different in the two saccharides, take place during dehydration; moreover, the microcrystalline structure is maintained unless the dry samples are equilibrated with a humidity >/=75% (>/=60%) at 25 degrees C for the trehalose (sucrose) sample. The evolution of the parameters that characterize the A substates of MbCO indicates that 1) the effects of water withdrawal are analogous in samples dried in the presence or in the absence of sugars, although much larger effects are observed in the samples without sugar; 2) the distribution of A substates is determined by the overall matrix structure and not only by the sample water content; and 3) the population of A0 substate (i. e., the substate currently put in relation with MbCO molecules having the distal histidine out of the heme pocket) is largely enhanced during the dehydration process. However, after rehumidification its population is largely decreased with respect to the values obtained, at similar water content, during the first dehydration run.  (+info)

Effect of 26 week magnetic field exposures in a DMBA initiation-promotion mammary gland model in Sprague-Dawley rats. (7/1457)

Several studies have suggested that exposure to 50 Hz magnetic fields promote chemically induced breast cancer in rats. Groups of 100 female Sprague-Dawley rats were initiated with a single 10 mg gavage dose of 7,12-dimethylbenz[a]anthracene (DMBA) at 50 days of age followed by exposure to ambient fields (sham exposed), 50 Hz magnetic fields at either 1 or 5 Gauss (G) field intensity or 60 Hz fields at 1 G for 18.5 h/day, 7 days/week for 26 weeks. A vehicle control group without DMBA was included. Rats were palpated weekly for the presence of tumors. There was no effect of magnetic field exposure on body weight gains or the time of appearance of mammary tumors. At the end of 26 weeks, the animals were killed and the mammary tumors counted and measured. Mammary gland masses found grossly were examined histologically. The mammary gland carcinoma incidence was 96, 90, 95 and 85% (P < 0.05, decrease) for the DMBA controls, 1 G 50 Hz, 5 G 50 Hz and 1 G 60 Hz groups, respectively. The total numbers of carcinomas were 649, 494 (P < 0.05, decrease), 547 and 433 (P < 0.05, decrease) for the DMBA controls, 1 G 50 Hz, 5 G 50 Hz and 1 G 60 Hz groups, respectively. The number of fibroadenomas varied from 276 to 319, with the lowest number in the 1 G 60 Hz exposure group. Measurement of the tumors revealed no difference in tumor size between groups. In this breast cancer initiation-promotion study in female Sprague-Dawley rats, there was no evidence that 50 or 60 Hz magnetic fields promoted breast cancer under the conditions of this assay. This study does not support the hypothesis that magnetic field exposure can promote breast cancer in this rat model.  (+info)

Microfungal contamination of damp buildings--examples of risk constructions and risk materials. (8/1457)

To elucidate problems with microfungal infestation in indoor environments, a multidisciplinary collaborative pilot study, supported by a grant from the Danish Ministry of Housing and Urban Affairs, was performed on 72 mold-infected building materials from 23 buildings. Water leakage through roofs, rising damp, and defective plumbing installations were the main reasons for water damage with subsequent infestation of molds. From a score system assessing the bioavailability of the building materials, products most vulnerable to mold attacks were water damaged, aged organic materials containing cellulose, such as wooden materials, jute, wallpaper, and cardboard. The microfungal genera most frequently encountered were Penicillium (68%), Aspergillus (56%), Chaetomium (22%), Ulocladium, (21%), Stachybotrys (19%) and Cladosporium (15%). Penicillium chrysogenum, Aspergillus versicolor, and Stachybotrys chartarum were the most frequently occurring species. Under field conditions, several trichothecenes were detected in each of three commonly used building materials, heavily contaminated with S. chartarum. Under experimental conditions, four out of five isolates of S. chartarum produced satratoxin H and G when growing on new and old, very humid gypsum boards. A. versicolor produced the carcinogenic mycotoxin sterigmatocystin and 5-methoxysterigmatocystin under the same conditions.  (+info)

of indoor building occupants (Great Britain Health and Safety features determine the rainfall distribution patterns over the the body as a result of metabolic activity. Melaka western part of Sarawak. Malaysia • FAQ • Solar radiation is closely related to the sunshine duration. From the Fig. Winds are generally This is because the thermal sensation is warm and almost hot. physical and chemical factors in the work environment could have a notable impact The site is highly valuable due to strategic location and high availability of spaces. patterns. divided into ... SUMMARY FACTORS AFFECTING EVAPORATION Factors Affecting Evaporation Evaporation Solar Radiation High High Wind High High Relative Humidity High (Water) ... University of Malaysia, Perlis; EN MISC - Fall 2019. As in the case of temperature, the diurnal variation of relative At very high relative humidity, harvested fruits maintain their nutritional quality, appearance, weight, and flavour, whilst reducing the rate at which wilting, ...
The purpose of this study is to evaluate whether, in people with dry eye syndrome, over the counter artificial tears and the prescription eye drop, dexamethasone, change or effect the eyes response to a low humidity environment.. It is known that irritation from dry eye can be improved by over the counter artificial tears because they wet and lubricate the eyes. The prescription eye drop, dexamethasone, can also improve eye irritation by decreasing the inflammation that develops in dry eye. Thus, the investigators hypothesize that the use of these conventional dry eye treatments will improve the eyes response to a low humidity environment. ...
The purpose of this study is to evaluate whether, in people with dry eye syndrome, over the counter artificial tears and the prescription eye drop, dexamethasone, change or effect the eyes response to a low humidity environment.. It is known that irritation from dry eye can be improved by over the counter artificial tears because they wet and lubricate the eyes. The prescription eye drop, dexamethasone, can also improve eye irritation by decreasing the inflammation that develops in dry eye. Thus, the investigators hypothesize that the use of these conventional dry eye treatments will improve the eyes response to a low humidity environment. ...
We are all able to tell whether an atmosphere is hot or cold the moment we enter it, but perceiving whether air has a low humidity is not as obvious to us. Our senses are not so refined as to feel the moisture content of the air we breathe into our lungs or which touches our skin.. However, the direct and indirect effects of dry air on our health are significant. Prolonged exposure to a low humidity can result in health problems for many organs (brain, kidneys, circulation, skin and eyes) and reduced resistance against chronic and acute airborne pollution, respiratory infections and allergies.. Maintaining the optimum humidity in a workplace improves employee health, which in turn reduces absenteeism and enhances productivity.. The Chartered Institute for Personnel, in its Absence Management report 2015, stated that minor illness, such as colds and flu, remain the most common cause of short-term illness. Improving a buildings humidity control is an effective and economic way to prevent this ...
Eck, T. F., B. Holben, J. Kim, A. Beyersdorf, M. Choi, S. Lee, J.-H. Koo, M. Giles, J. Schafer, A. Sinyuk, D. A. Peterson, J. S. Reid, A. Arola, I. Slutsker, A. Smirnov, M. Sorokin, J. Kraft, J. Crawford, B. E. Anderson, K. L. Thornhill, G. S. Diskin, S. Kim, and S. Park (2020), Influence of cloud, fog, and high relative humidity during pollution transport events in South Korea: Aerosol properties and PM2.5 variability, Atmos. Environ., 232, 117530, doi:10.1016/j.atmosenv.2020.117530 ...
An air or oil dryer module is provided to remove or reduce moisture from a lubricant using a pressurized air supply to inject dry air into a lubricant sump. As the “dry air” or air with a minimized moisture content, gathers moisture from the lubricant a relative humidity sensor detects an increase in air moisture. At a pre-determined relative humidity level, a fresh supply of air is added into the lubricant sump, purging the higher relative humidity level air from the sump. A method of reducing moisture content of a lubricant contained in an enclosed space is also disclosed and is performed by agitating the lubricant, providing a humidity sensor in fluid communication with the enclosed space, measuring the humidity of the enclosed space and comparing the humidity measurement with a pre-selected humidity level, introducing dry air into the enclosed space if the humidity level equals or exceeds the pre-selected humidity level, until the saturated humidity level is less than the pre-selected
Mixed halide Perovskite solar cells are commonly produced by depositing PbCl2 and CH3NH3I from a common solvent followed by thermal annealing, which in an up-scaled manufacturing process is likely to take place under ambient conditions. However, it has been reported that, similar to the effects of thermal annealing, ambient humidity also affects the crystallisation behaviour and subsequent growth of the Perovskite films. This implies that both of these factors must be accounted for in solar cell production. In this work, we report for the first time the correlation between the annealing time, relative humidity and device performance for inverted, mixed halide CH3NH3PbI(3-x)Clx Perovskite solar cells with active area ≈1 cm2. We find a trade-off between ambient humidity and the required annealing time to produce efficient solar cells, with low humidities needing longer annealing times and vice-versa. At around 20% RH, device performance depends relatively weakly on annealing time, but at higher ...
Thus, large quantity of dead organic matter accumulates in these areas, and this gives a rich humus and organic content to the soil. Since the latter amount is dependent on temperature, relative humidity is a function of both moisture content and temperature. Research suggests that the ideal humidity level in your home should be somewhere between 35% - 45%.Some sources suggest it can be as low as 30% or as high as 50%. Seasons. Humid definition, containing a high amount of water or water vapor; noticeably moist: humid air;a humid climate. Under high temperature, high humidity with sufficient rainfall and irrigation facilities, rice can be grown in any type of soil. Kodaikanal is 2100 m above sea level and located at 10.23° N 77.48° E. Kodaikanal has a population of 35021. it is difficult for the sweat to evaporate and in high humidity conditions we tend to sweat more. house-warming - tamil meaning of புதுமனை புகுவிழா. Contextual translation of high humidity into ...
Formaldehyde emissions from fiberglass and polyester filters used in building heating, ventilation, and air conditioning (HVAC) systems were measured in bench-scale tests using 10 and 17 cm2 coupons over 24 to 720 h periods. Experiments were performed at room temperature and four different relative humidity settings (20, 50, 65, and 80% RH). Two different air flow velocities across the filters were explored: 0.013 and 0.5 m/s. Fiberglass filters emitted between 20 and 1000 times more formaldehyde than polyester filters under similar RH and airflow conditions. Emissions increased markedly with increasing humidity, up to 10 mg/h-m2 at 80% RH. Formaldehyde emissions from fiberglass filters coated with tackifiers (impaction oils) were lower than those from uncoated fiberglass media, suggesting that hydrolysis of other polymeric constituents of the filter matrix, such as adhesives or binders was likely the main formaldehyde source. These laboratory results were further validated by performing a small ...
Pritha Ghosh, Randall Q. Snurr Northwestern University, Department of Chemical & Biological Engineering Activated carbons impregnated with metal salts are the current standard for adsorption and capture of toxic industrial chemicals (TICs). Metal-Organic Frameworks (MOFs) are an attractive alternative due to their chemically tunable nature and relative ease of synthesis. MOFs have been reported to outperform activated carbons in capturing TICs, especially MOFs containing open metal sites (Britt et al., PNAS 2008, 105, 11623). However, in the presence of ambient humidity, water molecules coordinate to the open metal sites, leading to a drastic decrease in the MOFs capacity to capture TICs (Grant Glover et al., Chem. Eng. Sci. 2011, 66, 163). Since TICs may need to be captured under humid conditions (such as in a gas mask), it is important to assess adsorption of TICs in MOFs with water vapor present. In this work, we model the adsorption of TICs under humid conditions in a set of hydrophobic ...
Nowadays PEMFC with hydrogen fuel has developed to commercialize to replace the conventional machine. Several limitations in PEMFC commercialization are its low efficiency, viability of hydrogen fuel supply and problem of controlling fuel and water as reaction products. Effective effort to increase efficiency and water management include elevating temperature of PEMFC operation near water boiling point to increase energy produced, prevent water flooding, enhanced cooling efficiency and also the possibility to use hydrogen and air under lower humidity in order to make simples PEMFC design. But at elevated temperature and low relative humidity, Nafion membrane that during the time still used as electrolyte will shrink and at high humidity and high temperature above 80oC membrane will swell and irreversibility decay occur. Membrane shrinking and swelling will reduce PEMFC performance. The objective of this study is to investigate the usage of Nafion-SiO2-PWA nanocomposite membrane NS10W, NS15W and ...
Using the guinea pig as a model host, we show that aerosol spread of influenza virus is dependent upon both ambient relative humidity and temperature. Twenty experiments performed at relative humidities from 20% to 80% and 5°C, 20°C, or 30°C indicated that both cold and dry conditions favor transmission. The relationship between transmission via aerosols and relative humidity at 20°C is similar to that previously reported for the stability of influenza viruses (except at high relative humidity, 80%), implying that the effects of humidity act largely at the level of the virus particle. For infected guinea pigs housed at 5°C, the duration of peak shedding was approximately 40 h longer than that of animals housed at 20°C; this increased shedding likely accounts for the enhanced transmission seen at 5°C. To investigate the mechanism permitting prolonged viral growth, expression levels in the upper respiratory tract of several innate immune mediators were determined. Innate responses proved to ...
Poor humidity levels can lead to many problems. Here you can find info on ideal indoor humidity levels and what you can do to maintain them.
Learn more about Higher Indoor Humidity Levels Might Slow Flus Spread at Memorial Hospital Higher Indoor Humidity Levels Might Slow Flus Spread Study...
Air pollution in urban areas is a huge concern that demands an efficient air quality control to ensure health quality standards. The hotspots can be located by increasing spatial distribution of ambient air quality monitoring for which the low-cost sensors can be used. However, it is well-known that many factors influence their results. For low-cost Particulate Matter (PM) sensors, high relative humidity can have a significant impact on data quality. In order to eliminate or reduce the impact of high relative humidity on the results obtained from low-cost PM sensors, a low-cost dryer was developed and its effectiveness was investigated. For this purpose, a test chamber was designed, and low-cost PM sensors as well as professional reference devices were installed. A vaporizer regulated the humid conditions in the test chamber. The low-cost dryer heated the sample air with a manually adjustable intensity depending on the voltage. Different voltages were tested to find the optimum one with least energy
11.10.2020. Global coding and marking specialists, DataLase, has produced a water based flexographic (WBF) high humidity coating for use in the paper and corrugated printing industries. DataLase WBF High Humidity Coating is particularly relevant where high humidity is a factor in post-print processes, or lithographic presses equipped with water based coating units.. Developed as an alternative to print & apply labelling and high resolution inkjet printing of shipping data onto boxes (e.g. GS1 compliant barcodes, variable price/weight information, variable contents/ingredients data), DataLase WBF High Humidity Coating addresses the challenges faced by brand owners and retailers seeking novel solutions to their mandatory shipping data needs. The coating formulations have been optimised to provide unsurpassed product stability and excellent flow properties in geographical areas where high humidity is present.. Used in combination with an appropriate CO₂ laser marking system, DataLase WBF High ...
2015-09-07. In assessing agrometeorological conditions by Selianinovo hydrothermal coefficient (HTC) values ​​very dry (HTC ,0.5) still remains the most central parts of the country. Anykščiai, Biržai, Elektrenai, Jonava and Jurbarkas, Kaisiadorys, Kaunas, Kėdainiai, Marijampolė Prienai, Šiauliai, Šilutė and Cesis districts prolonged dry periods reached the dangerous phenomenon of the threshold (arid period of active vegetation present weather phenomena considered when HTC ,0 5 lasts 15 days or more). Alytus, Druskininkai, Ignalina, Kelme, Raseiniai, Trakai municipalities - dry (HTC 0.5-0.6). Arid (HTC 0.6-0.7), mainly in the southern regions of the country. A slight lack of moisture (HTK from 0.8 to 0.9) recorded Akmenės, Panevezys, Šalčininkai, Telsiai, Ukmerge and Utena districts. The north-eastern and north-western fringes of the country, as well as Molėtų Kalvarijos and humidity conditions are optimal (HTC 1.0-1.5), and Plunge and Kretinga districts due to extreme ...
The main route of transmission of SARS CoV infection is presumed to be respiratory droplets. However the virus is also detectable in other body fluids and excreta. The stability of the virus at different temperatures and relative humidity on smooth surfaces were studied. The dried virus on smooth surfaces retained its viability for over 5 days at temperatures of 22-25°C and relative humidity of 40-50%, that is, typical air-conditioned environments. However, virus viability was rapidly lost (3 log10) at higher temperatures and higher relative humidity (e.g., 38°C, and relative humidity of 95%). The better stability of SARS coronavirus at low temperature and low humidity environment may facilitate its transmission in community in subtropical area (such as Hong Kong) during the spring and in air-conditioned environments. It may also explain why some Asian countries in tropical area (such as Malaysia, Indonesia or Thailand) with high temperature and high relative humidity environment did not have ...
AsianProducts Temperature-Humidity Chamber directory - It includes sources from Temperature-Humidity Chamber manufacturers and Temperature-Humidity Chamber suppliers, and those qualified Temperature-Humidity Chamber manufacturer are extensively from china, Taiwan, Hong Kong.
Indoor Air Quality is an increasing concern in the world today. The mere presence of people in a building or residence can significantly alter indoor air quality. Relative humidity over the range of normal indoor temperatures (66 - 80 degrees Farenheit) has been linked both directly and indirectly to various health and structural problems. The purpose of this project was to discover whether residential dwellings might benefit from an indoor humidification system. The project consisted of the deployment of three separate sensor networks consisting of 12 tmote sky modules manufactured by the Moteiv corporation, each equipped with a temperature and humidity sensor manufactured by Sensirion. Each tmote sky module continuously transmitted the raw data readings to a base station to be processed. The lifetime of each network was approximately four days of continuous data transmission. The results verified the hypothesis that relative humidity levels have a significant affect on the indoor environment and
After another comfortable start to the day, the 90s return to the forecast this afternoon with light winds and continued low humidity.
Thirsty blowflies whose tarsi come into contact with water will respond with proboscis extension. When flies were exposed to high or low relative humidities (RH) prior to testing, the tarsal taste thresholds to sucrose in flies that were unresponsive to water alone increased or decreased, respectively. Evidently, thirst can also be subthreshold and recognizable only as a change in threshold to aqueous sucrose.. Thresholds to sucrose and fructose, which were in the millimolar range in 3-day-old adult flies held at 55-70% RH prior to testing, fell significantly after the flies had been held at low humidity (13-20% RH) for several hours. There was no low-humidity-dependent drop in threshold with galactose or xylose, sugars to which flies normally have thresholds in the 102mmoll−1 range.. Flies held at low relative humidity exhibited increased tarsal thresholds to sucrose when they were injected with water or were allowed to drink water adlibitum. When multiple injections of water were given, ...
With the humidity dropping and the winds blowing, there could be trouble ahead for firefighters working to tame the Wine Country fires. The North Bay fires have been fueled partly by dry air, and forecasters at the National Weather Service said that could get worse Saturday night and Sunday morning. Relative humidity levels are projected to plunge into the single digits in higher elevations of Sonoma and Napa counties. Humidity levels at lower elevations are expected to stay in the teens to 20 percent.
Any area with high humidity is susceptible to black mold problems. A relative humidity greater than 55 percent is enough to support the growth of black mold. Indoors, humidity levels can fluctuate drastically due to the effects of HVAC systems.
Dry air continues to slide down into Acadiana creating another comfortable start to the day with temperatures in the upper 60s and lower 70s.
Image: Michal Marcol / Teddington, UK -?? A two day training course on humidity measurement and calibration, covering measurement techniques, terms and definitions;,calculations, traceability and calibration and hands-on laboratory sessions.. The course will open with an introductory session on humidity terms and definitions followed by talks that will cover the necessary background to the subject with full course notes provided. A tour of the NPL Humidity laboratory, plus hands-on sessions, will give a practical introduction to humidity measurement and calibration techniques.. This will be reinforced with talks on uncertainties, traceability and accreditation.. To view the programme, click here for the current/most recent course flyer.. All participants will receive a certificate of attendance.. This course is suitable for technicians and technical managers closely concerned with humidity measurement and calibration.. The course will be given by members of the NPL ...
Improved water insensitive bonded perlite structural materials are produced by combining expanded perlite with an aqueous solution of an alkali metal silicate and thereafter molding the mixture into a desired shape and curing the molded mixture under closely controlled temperature and humidity conditions. The aqueous solution of alkali metal silicate will be either a sodium silicate solution or a potassium silicate solution. The temperature and humidity conditions for curing the molded perlite and alkali metal silicate mixture are from about F. to about F. and from about 30% to about 60% relative humidity. By carrying out the curing process under the closely controlled temperature and relative humidity conditions, a water insoluble crystalline reaction product is formed between the alkali metal silicate and the reactive expanded perlite.
TY - JOUR. T1 - Friction and wear of monolithic and glass-fiber reinforced PA66 in humid conditions. AU - Kim, J. W.. AU - Jang, Ho. AU - Woo Kim, Jin. PY - 2014/1/15. Y1 - 2014/1/15. N2 - Effect of water absorption on friction and wear of polyamides, namely monolithic polyamide 66 (PA66) and PA66 composite with 30. wt% of short glass fibers, was investigated using a block-on-ring-type tribotester. Monolithic PA66 showed high wear rates after water absorption because of softening by the absorbed water molecules and increased interfacial adhesion on the steel counter surface. Degraded wear characteristics of monolithic PA66 by chain scission of the amide functional group by water molecules were substantially improved by short glass-fiber reinforcement. The improved friction and wear characteristics were attributed to contact plateaus produced during sliding, which were held by condensed glass fibers, suggesting possible applications of PA66 in a humid environment by reinforcing it with short ...
While cryogen spray cooling (CSC) can protect skin epidermis from non-specific thermal damage, spray droplets in-flight and the cryogen/frost layer that forms on the skin surface may pose a potential problem for laser light attenuation due to absorption and/or scattering. Employing a hand piece expressly designed for concurrent light and cryogen delivery on skin phantoms, we studied the effect of relative humidity on light transmittance during and after spray cooling. Cryogen spurts were aimed at a microscope glass slide and a deformable agar phantom preheated at 32°C. According to our results, relative humidity plays a very important role in the light transmission during CSC. Light absorption and/or scattering by the spray droplets in-flight and cryogen/frost layer formation at the surface induced light attenuation values of up to 45%. The higher the relative humidity is, the lower the light transmission ...
TY - JOUR. T1 - Scaling behavior in daily air humidity fluctuations. AU - Vattay, Gábor. AU - Harnos, Andrea. PY - 1994. Y1 - 1994. N2 - We show that the daily average air humidity fluctuations exhibit nontrivial 1/fα behavior which is different from the spectral properties of other meteorological quantities. This feature and the fractal spatial structure found in clouds make is plausible to regard air humidity fluctuations as a manifestation of self-organized criticality. We give arguments why the dynamics in air humidity can be similar to those in sandpile models of self-organized criticality.. AB - We show that the daily average air humidity fluctuations exhibit nontrivial 1/fα behavior which is different from the spectral properties of other meteorological quantities. This feature and the fractal spatial structure found in clouds make is plausible to regard air humidity fluctuations as a manifestation of self-organized criticality. We give arguments why the dynamics in air humidity can be ...
16 subjects were monitored in different humidity levels to assess their physical responses to the environment and how it made them feel.
16 subjects were monitored in different humidity levels to assess their physical responses to the environment and how it made them feel.
Aims: To develop infectious (live/dead) enveloped virus test indicators and response surface methodology (RSM) models that evaluate survival of an enveloped ribonucleic acid (RNA) virus on contaminated aircraft materials after exposure to hot, humid air (HHA).Methods and Results: Enveloped RNA bacteriophage Phi6 (Φ6) was dried on wiring insulation, aircraft performance coating (APC), polypropylene, and nylon at ≥ 8 log10 plaque-forming units (PFU) test coupon−1. Only 2.4 log10 inactivation was measured on APC at 70°Celsius (°C), 5% relative humidity (RH) after 24 h. In contrast, HHA RSM models showed a 90% probability of a 7 log10 inactivation at ≥63°C, 90% RH after 1 h, and decontamination kinetics were similar across different materials. HHA decontamination of C-130 and C-17 aircraft showed >7 log10 and ≥5.9 log10 inactivation of enveloped virus on 100 and 110 test indicators, respectively, with a 1-h treatment, excluding ramp-up and ramp-down times.Conclusions: Enveloped RNA virus test
To determine the effect of humidity on the levels of the mouse allergen Mus m 1, an experimental animal room was constructed to control environmental variables. The sex, strain, age, and number of mice was constant in the room, so that the average daily production of Mus m 1 would not vary greatly. Six different levels of relative humidity from 15% to 65% were maintained for a minimum of a week each. Daily collections of airborne particulates were eluted from filters and Mus m 1 content measured by immunological assay. Increasing relative humidity caused a decrease in Mus m 1 levels from a high of 3 ng/m3 at 15% humidity to a low of 0.5 ng/m3 at 65% humidity. Thus, reduction of airborne allergen levels can be achieved by careful attention to humidity control, especially during the winter heating season when humidity levels may be low. This experimental room can be used to measure the effect of other variables such as ventilation rate, caging, bedding, and work practices on the levels of
The Eos® Complete Humidity Controller allows you to accurately and efficiently control the humidity levels in your garden. Set your desired humidity level and the controller will activate and deactivate humidifying and dehumidifying equipment appropriately. This controller also features low temperature protection in the event that achieving the desired humidity level results in an undesirable temperature. This Eos unit features a 15 ft remote sensors that monitors your temperature and humidity levels. The easy to use analog style interface makes programming the controller a simple task. Day and night settings allow for accurate environmental control ...
What is the correct humidity level for hatching Call duck eggs? I am a little confused.[IMG] Im going to be putting eggs in the incubator pretty soon....
Human beings spend close to 90% of their lives indoors. So why not start maintaining proper humidity levels to help keep your home comfortable? Learn more from the Air Comfort blog!
Humidity inside the home can create a long list of issues. Inside the home you want your humidity level to be somewhere between 30-50%.
People manage home humidity levels in several ways, including properly ventilating clothes dryers and washers outside, running fans to have air continually circulating, operating whole-house...
Question - Coughing, sleeplessness, did not improve after reducing humidity level. Do you know what it could be?. Ask a Doctor about diagnosis, treatment and medication for Persistant cough, Ask an ENT Specialist
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The humidifier is the part that will maintain the humidity level in your humidor. Most of the humidors comes with so called green foam humidification systems. While its the most commun humidification system, it works only one way by increasing humidity level but will not lower humidity if necessary. We recommend to update to the latest technologies like the crystals, gel or beads that work both ways and really help maintain 70% humidity in your humidor ...
Adsorption plays a key role in the volatile organic compound (VOC) photocatalytic oxidation performance and kinetic behavior. It can lead to VOC mixture sequential treatment or even photocatalyst deactivation. The aim of this work is to determine qualitative and quantitative data regarding VOC adsorption on P25 TiO2. Acetaldehyde and acetic acid adsorption on TiO2 have been studied under both dry and humid conditions. Three experimental methods have been used: breakthrough curves, room temperature desorptions and temperature-programmed desorptions. First, acetaldehyde and acetic acid adsorptions are studied individually. Dry and humid experiments provide complementary pieces of information to identify the adsorption modes, in accordance with literature. The Langmuir model parameters (adsorption constant (K), reversible and irreversible maximum adsorbed amounts (q(m,rev) and q(m,irr)), and adsorption enthalpy Delta H) are determined for each VOC. Based on experimental results, a model for acetaldehyde
Development of a humidity measurement infrastructure will provide the tools needed to improve efficiency and quality in industry. Humidity is one of the most important properties affecting everyday processes from indoor ventilation to the storage of food products and pharmaceuticals. As a result, the ability to accurately measure humidity is vital to increasing efficiency, competiveness and providing quality assurance across a huge variety of European industries. This project has developed new measurement methods and shares best practice with emerging NMIs by providing an infrastructure for reliable, traceable humidity measurements across Europe. A particular focus has been placed on capabilities to meet the needs of each countrys key industries to allow them to gain a competitive edge. Strategies for the continued development of humidity measurement capabilities will be developed, to prepare the future metrological landscape and ensure European industry has access to the facilities it needs ...
Forearm skin blood flow has often been adopted in environmental studies to represent skin blood flow (SKBF) distribution to the whole body. In part, this can be attributed to the use of venous occlusion plethysmography which is commonly performed on the arm. However, more recently the use of non-invasive laser Doppler flowmetry has been employed to measure SKBF. Pre-pubertal children (5 female, 6 male; mean age 9.5 yr, range 7-12 yr) undertook a 45 min lower body intermittent exercise protocol under hot and humid conditions (32.5 ± 0.1 C, 70.6 ± 0.8% r.h.). The protocol included 10 min seated rest followed by three bouts of cycling separated by 5 min rest. Each exercise bout consisted of 5 min continuous cycling at 60% HRMAX followed by three 20 s sprints. Laser Doppler SKBF assessments were taken after each workload at four sites including forehead, back, forearm and medial calf. SKBF significantly increased after each of the workloads when compared to resting levels (p,0.01). Skin blood flow ...
Question - Trouble breathing in hot and humid conditions. Have pulmonary fibrosis. What is going on? . Ask a Doctor about diagnosis, treatment and medication for Pulmonary fibrosis, Ask an ENT Specialist
Xikar Crystal Humidifiers are reliable and effective alternatives to traditional humidification devices. Each Crystal Humidifier is prefilled upon arrival. Simply unwrap the humidifier and place in your humidor. A slow and steady 70% humidity level is dispersed. Clear polycarbonate cases house gel crystals which can saturate 450 times their weight with propylene glycol solution. A magnetic attachment firmly affixes the humidifier to the inner lid of your humidor. The Crystal 50 is designed to maintain as many as 50 cigars in a volume of 500 cubic inches at 70% humidity, while the Crystal 100 will handle up to 100 cigars in a volume of 850 cubic inches at 70% humidity. Recharge the humidifier with propylene glycol solution. Durations between refills may vary depending on temperature and quantity of cigars. Relieve your humidification worries with Xikar today!
This paper presents the main findings of the effect of indoor humidity on occupants thermal comfort in the humid tropics of Malaysia. An extensive field investigation was carried out in Kota Kinabalu city and the surrounding areas, located in East Malaysia. A total of 890 individuals were asked to complete a questionnaire. Measured indoor climates were also recorded. The survey was designed as cross sectional data collection. The present investigation found that the occupants were thermally comfortable at wide relative humidity range. The mean relative humidity corresponding to the optimum comfort temperature was close to 73%. Regression models failed to predict accurately the effect of relative humidity on occupants thermal perceptions. In addition, a quadratic regression model was developed for the prediction of the mean indoor relative humidity based on indoor temperature. The suggested regression model can be used for an approximate prediction of indoor relative humidity when required.
Fresh-cut produce is one of the fastest growing convenience food industries in history. Fresh-cut fruits and vegetables offer a number of advantages over whole produce, including cost control, waste reduction, variety selection, consistent quality and safety, and less in-store labor (Luo 2007). However, the fresh-cut industry and the evolving processes used to sustain freshness face considerable challenges.. The main problem that makes fresh-cut fruit a highly perishable product is the microbial growth caused by the accumulation of leaked juice rich in nutrients in the bottom of containers (Brecht 2006). Operations such as peeling, cutting, or slicing greatly increase tissue damage of fresh-cut fruits, causing the release of intracellular liquids, and consequently increase microbial growth, which is the principal deteriorative and safety problem involved in the fresh-cut industry (Brecht 2006). Additionally, as a response/consequence to wounding during processing and microbial growth during ...
... relative humidity drops and cloud levels rise as temperatures rise.[75] The humidity of the range is also influenced by the ... Seasonal variation in humidity is also present with average May and June relative humidity around 50%, with 25% possible during ... Precipitation and Humidity[edit]. Precipitation varies on both annual and seasonal scales in the Sierra Madre. Annual ... Humidity in the mountains varies at wide levels as does rainfall. In the early morning before dawn, the air is almost saturated ...
Humidity[edit]. Humidity occurs in indoor environments due to building related causes. Porous walls, rising damp, and leaks in ... Humidity levels in an indoor environment need to be accounted for based upon season and temperature. If humidity levels do not ... An acceptable humidity level in indoor spaces ranges from twenty to sixty percent year round.[12] However, levels less than ... Items such as aquariums, indoor swimming pools, hot tubs, and even indoor plants add to the humidity of an indoor space.[10] ...
Providing the right humidity[edit]. Although several options can be used here, usually semi-white plastic is used to cover the ... A plastic bottle can be used as a small greenhouse to provide the right humidity level. ...
Relative humidity[edit]. In recent decades, it has become understood that even delicate organic materials have some elasticity ... They include the temperature, relative humidity, light levels present in a collection space on any given day, and contaminants. ... Anistropic materials such as wood and ivory are especially responsive to humidity changes, and RH issues are compounded when ... Mecklenburg, Marion F.; Charles S. Tumosa (April 1999). "Temperature and relative humidity effects on the mechanical and ...
Relationship to relative humidity: The relative humidity (RH) of air in equilibrium with a sample is also called the ... Use in humidity control[edit]. There is net evaporation from a solution with a water activity greater than the relative ... Demchick, P. H. (1984). "Taking control of chamber humidity". The Science Teacher. 51 (7): 29‑31.. ... There is net absorption of water by a solution with a water activity less than the relative humidity of its surroundings. ...
"Relative Humidity and Wet-bulb from Dewpoint". US National Weather Service. Retrieved 4 February 2019.. Calculation assumed air ... Heat waves with high humidity[edit]. *In 2003, Dhahran, Saudi Arabia, saw the highest heat index ever recorded at 81 °C (178 °F ... When relative humidity is 100%, a wet bulb thermometer can also no longer be cooled by evaporation, so it will read the same as ... "The Deadly Combination of Heat and Humidity". The New York Times. 6 June 2015. Retrieved 16 March 2016.. ...
Temp/humidity survival. *. Yee-Fatt How, Chow-Yang Lee (2010). "Effects of temperature and humidity on the survival and water ...
What's the maximal level of absolute humidity possible practically?[edit]. What's the maximal level of absolute humidity ... Humidity is explicitly the measure of water vapor content in the air, and not water liquid content. --OuroborosCobra (talk) 04: ... 2.1 What's the maximal level of absolute humidity possible practically?. *2.2 What is the efficacy of a previous COVID ...
Humidity : The higher the humidity, the faster the tea will age. Liquid water accumulating on tea may accelerate the aging ... 60-85% humidity is recommended.[36] It is argued whether tea quality is adversely affected if it is subjected to highly ... Control over the multiple variables in the ripening process, particularly humidity and the growth of Aspergillus spp., is key ... Dry storage involves keeping the tea in "comfortable" temperature and humidity, thus allowing the tea to age slowly. Wet or " ...
Relative humidity[edit]. Main article: Relative humidity. Relative humidity (RH) is the ratio of the amount of water vapor in ... "Humidity". Humidity. The Columbia Electronic Encyclopedia (6th ed.). Columbia University Press. 2012.. ... Cold air with high relative humidity "feels" colder than dry air of the same temperature because high humidity in cold weather ... The recommended level of indoor humidity is in the range of 30-60% in air conditioned buildings,[29][30] but new standards such ...
Dew Point / Humidity Chart Dew Point. Humidity ≥ 75 °F. Extreme 70 °F - 74 °F. High ...
Moving air may prevent mold from growing, since it has the same desiccating effect as low humidity. Mold grow best in warm ... After water damage to a building, mold grows in walls and then becomes dormant until subsequent high humidity; suitable ... Mold problems occur in airtight homes more frequently in the warmer months (when humidity is high inside the house, and ... Efforts typically focus on areas where there are signs of liquid moisture or water vapor (humidity), or where moisture problems ...
Low humidity increases water loss; if enough water is lost the cell fails. Button cells have a limited current drain; for ... The electrolyte loses water more rapidly in conditions of high temperature and low humidity. Because the potassium hydroxide ...
Humidity control[edit]. Since humans perspire to provide natural cooling by the evaporation of perspiration from the skin, ... which in turn made the humidity in the room controllable. The controlled temperature and humidity helped maintain consistent ... Evaporative coolers tend to feel as if they are not working during times of high humidity, when there is not much dry air with ... "Dristeem: Humidity and Comfort"] Check ,url=. value (help) (PDF) ...
"Average Relative Humidity". Department of Meteorology at the University of Utah. Archived from the original on December 9, 2006 ... proximity to the bay and the winds that it generates moderate the area's temperatures and ease the effects of the humidity, ...
Average relative humidity (%). 52. 40. 35. 31. 33. 42. 45. 45. 45. 45. 51. 55. 43.3. ...
Average relative humidity (%) 55 62 64 66 62 62 57 50 46 50 52 52 57 ...
Average relative humidity (%) 68 68 66 70 77 83 80 83 85 87 79 74 77 ...
Average relative humidity (%) 29 28 30 38 50 57 62 60 60 47 33 31 44 ...
Average relative humidity (%) 63.9 63.0 62.9 61.4 66.6 70.1 71.0 72.5 73.0 70.2 68.9 67.0 67.5 ... and high humidity year-round. The USDA places the city in hardiness zone 6b, with the suburbs in zones 6a - 7b.[36] The ...
Average relative humidity (%) 77 75 73 77 78 81 80 81 80 78 79 78 78.1 ...
Average relative humidity (%) 65.3 64.9 64.9 66.5 70.4 76.8 78.3 76.5 73.7 66.9 65.1 65.1 69.6 ... Average relative humidity (%) 62.8 62.1 62.4 64.5 69.9 78.2 84.1 79.0 72.5 63.9 63.2 62.2 68.7 ... Average relative humidity (%) 67.5 65.1 65.0 66.7 71.4 81.1 84.4 80.6 75.3 68.4 67.8 67.6 71.7 ... Average relative humidity (%) 67.0 68.4 69.5 73.2 79.5 85.1 88.4 83.2 77.2 69.0 67.1 66.0 74.5 ...
Average relative humidity (%) 84 80 76 67 58 65 68 70 75 80 85 84 74 ...
Average relative humidity (%) 84 81 73 65 67 69 67 68 73 78 84 85 75 ...
Source #2: Universidad de Chile (sunshine hours),[61][62] Deutscher Wetterdienst (extremes and humidity)[63] ...
Source #2: Deutscher Wetterdienst (extremes and humidity)[60]. Ecology[edit]. Easter Island, together with its closest ...
Average relative humidity (%) 77 76 77 78 81 82 81 79 78 80 77 75 78 ...
Average relative humidity (%) 68.2 66.4 63.2 62.5 66.4 66.8 69.1 69.6 71.3 66.2 67.7 68.8 67.2 ... with high levels of humidity due to moisture encroaching from the Gulf of Mexico. Afternoon and evening thunderstorms are ...
Average relative humidity (%) 72 68 65 65 63 60 52 52 62 68 75 74 65 ...
Average relative humidity (%) 76.2 73.3 71.6 66.8 66.0 70.5 71.0 76.1 78.5 76.4 78.2 79.6 73.7 ... Source: NOAA (relative humidity and sun 1961-1990)[23][24][25] Climate data for Alpena, Michigan (Water Treatment Plant near ...
Relative humidity[edit]. Main article: Relative humidity. The relative humidity (. R. H. {\displaystyle (RH}. or ϕ. ). {\ ... Relative humidity, expressed as a percentage, indicates a present state of absolute humidity relative to a maximum humidity ... "Climate - Humidity indexes". Encyclopaedia Britannica. Retrieved 15 February 2018.. *^ "Climate/humidity table". Transport ... Specific humidity[edit]. Specific humidity (or moisture content) is the ratio of the mass of water vapor to the total mass of ...
Humidity measurements include absolute humidity, the mass of water vapor per unit volume of natural air; relative humidity ( ... usually meant when the term humidity alone is used), the ratio ... Humidity measurements include absolute humidity, the mass of ... Absolute humidity finds greatest application in ventilation and air-conditioning problems. Humidity is measured by means of a ... On the other hand, a low relative humidity modifies the effect of temperature extremes on the human body. Humidity decreases ...
Hybrid Humidity Generator. NISTs new primary standard humidity generator, the Hybrid Humidity Generator (HHG), replaces the ... Humidity. The NIST Thermodynamic Metrology Group maintains and develops national standards of humidity (in the range 1 nmol/mol ... A Humidity Generator for Temperatures to 200 °C and Pressures to 1.6 MPa. November 30, 2012 ... Humidity Responsive Photonic Sensor based on a Carboxymethyl Cellulose Mechanical Actuator. July 15, 2018 ...
Highs will be in the mid to upper 90s, but with the higher humidity in place, it will feel like 105 to 110. This is certainly ... Moving into the holiday weekend, a slight drop in temperatures and humidity, but itll still be very warm. An isolated storm ... Continued heat and humidity. Your forecast from the NBC 5 Weather Experts. ...
Today will be with mostly sunny with more heat and less humidity. Expect more hit or miss showers and storms over far East ... Today will be with mostly sunny with more heat and less humidity. Expect more hit or miss showers and storms over far East ... More heat and less humidity. Your forecast from the NBC 5 Weather Experts. ...
Hows the weather looking for your Thursday? Get the latest Maines Total Weather video forecast from Chief Meteorologist Roger Griswold.
... about the mandolin but I put in the case a d addario package humidity absorber inside the cave of the body to keep humidity at ... In this time of year I fear for humidity in the cupboard where I keep both my Morgan Monroe and my Martin guitar , temperature ... is at 81 f and humidity at 78 percent in the case of the guitar, I honestly still dont know ... Re: Humidity As others have said, high humidity is much less a problem than low humidity - until you get to a mold or mildew ...
As an example of how to read the table, a room temperature of 70° F combined with a relative humidity of 10% feels like 64° F, ... Winter Indoor Comfort and Relative Humidity. Effects of Dry Air on the Body ... However, the heat that is added will cause a drying effect and lower the indoor relative humidity, unless an indoor moisture ... Compared to summer when the moisture content of the air (relative humidity) is an important factor of body discomfort, air ...
General Information on Humidity and Collections. Different types of collections have substantially different relative humidity ... Wasp nest specimen with mold growth as a result of incorrect humidity conditions. ©Justine Cooper, Courtesy Daneyal Mahmood ... This problem is accelerated by high relative humidity conditions.. Temperature/RH and Vertebrate Zoology Collections. ... Datalogger Applications in Monitoring the Museum Environment, Part I:Comparison of Temperature Relative Humidity Dataloggers ...
Cold weather, high humidity and big daily temperature swings seem to land more people in the hospital with strokes. As it got ... Conversely, high humidity may cause dehydration, which also can raise the risk for clots and raise stress on the body, he ... Cold weather, high humidity and big daily temperature swings brought more stroke hospitalizations. The study by researchers ... Lower temperatures, larger daily temperature changes and higher dew points (humidity) were tied to higher stroke ...
Relative humidity, expressed as a percentage, indicates a present state of absolute humidity relative to a maximum humidity ... The low humidity is a consequence of drawing in the very cold air with a low absolute humidity, which is found at airliner ... Concentration Dew point depression Heat index Humidity buffering Humidity indicator card Humidity indicator Psychrometrics ... Specific humidity is the ratio of water vapor mass to total moist air parcel mass. Humidity plays an important role for surface ...
Heat, humidity to follow Tuesdays rain. By PATRICIA KITCHEN AND GARY DYMSKI [email protected],[email protected] ... Much of the Island can expect temperatures in the upper 80s, feeling more like lower 90s in some cases, thanks to humidity, ...
... but it wont last long as the humidity will be increasing in the coming days. ... If there is, like, a tiny bit of humidity in the air, its curly again." Ms. Wolf and others with naturally curly hair should ... but it wont last long as the humidity will be increasing in the coming days. By Friday afternoon, portions of the area will ...
University of Engineering and Technology has designed a billboard that creates clean drinking water from atmospheric humidity. ... In a desert climate with an average temperate of 95 degrees Fahrenheit and average relative humidity of about 30 percent, the ... But Limas Pacific Coast location experiences humidity of more than 90 percent on summer days, from December to February. So ... A Billboard That Condenses Water From Humidity. Perus University of Engineering and Technology has designed a billboard that ...
At humidity levels of 23 percent, 70 to 77 percent of the flu virus particles were still able to cause an infection an hour ... But when humidity levels were raised to 43 percent, just 14 percent of the virus particles had the ability to infect. Most of ... High humidity was just as detrimental to small flu particles as large ones. Thats important because small flu particles tend ... Raising the humidity level of a whole building could be a challenge. But the findings suggest that hospitals might consider ...
Temperatures on Sunday will reach well into the 80s, and when you add in the humidity, being by a body of water will be ... Today is the best day of the next three in my opinion because of the low humidity, sunshine, and light winds. Temperatures will ... Although there will be fluctuations in humidity next week, generally, it looks quite high. ...
Humidity doesnt hinder the ability of flu viruses to infect people, claims a new study that challenges a long-held belief that ... home/cold and flu center/ cold and flu a-z list/ humidity wont hamper spread of flu virus article ... "We thought this might help explain why flu season occurs in the winter, when humidity is low indoors, but we now have to ... The team ran the experiment at seven different humidity levels.. "I was astonished," Lakdawala said in a Pitt news release. " ...
Does high humidity, for example, increase intracranial pressure? Or is it just, li... ... It seems to be generally accepted that humidity worsens headaches, but I dont find any explanations WHY this is so. ... Headaches and humidity Gcalex It seems to be generally accepted that humidity worsens headaches, but I dont find any ... Does high humidity, for example, increase intracranial pressure? Or is it just, like so much surrounding headaache, a mystery? ...
This approach could lead to devices that can charge cellphones or other electronics using just the humidity in the air. As a ... Harvesting Energy From Humidity 89 Posted by Soulskill on Tuesday July 15, 2014 @05:34PM. from the its-not-the-heat,-its-the- ... Submission: Harvesting energy from humidity - Water droplets can charge Cellphones. Telcos Move Net Neutrality Fight To ...
Weather Underground: Current humidity level rises above. Slack: Post to channel. ... Use Weather to send warning message to Slack channel when Humidity spikes parameter. Use levels in region to help with pest ...
I was wondering how does it look like on the water overnight? Can someone tell me what does it like in the summer in Clear Lake/Galveston? I read somewhere that Catalina 22 is called bbq pit, I guess because it is hot inside. If I get a sailboat without AC, would I be able to spend some ...
I have bronchitis and COPD and humidity closes the airways terrible.. Terry ...
Humidity (Serbian: Vlažnost) is a 2016 Serbian drama film directed by Nikola Ljuca. It was named as one of five films that ... Humidity at IMDb v t e v t e. ...
Relative humidity. With this knowledge, we can now talk about relative humidity. The word relative is the key to the term, not ... Where the numbers are close, the relative humidity is high, when the two are far apart the relative humidity is low. ... If the relative humidity is 100 percent, its not telling us anything about how we feel; only the air is holding as much as it ... Its not relative humidity which tells us how we feel, its the dew point. When the dew point reaches about 60F there is about ...
... results that coronavirus could slow with direct sunlight and humidity. ... Will Heat And Humidity Kill The Coronavirus? An adviser to the Department of Homeland Security gave a presentation during the ... Will Heat And Humidity Kill The Coronavirus?. Listen · 4:12 4:12 ... Will Heat And Humidity Kill The Coronavirus?. Listen · 4:12 4:12 ...
Read this Bright Hub article to get a clear picture of relative humidity, evaporation and how they are related to each other. ... it is first important to understand what relative humidity is and what the factors are that it is affected by. ... How does relative humidity affect evaporation? To understand, ... Relative humidity is the ratio of the current humidity of the ... Relative Humidity Affecting Evaporation. The rate of evaporation at a given place is always dependent on the humidity of that ...
Learn more about COPD and humidity here, and discover how to find the right humidity levels for you. Also get information on ... COPD triggers, handling indoor humidity, managing mold in moist environments, and more. ... low humidity levels are best for people with COPD, but every person is different. ... In general, lower humidity levels are best for people with COPD. According to the Mayo Clinic, the ideal indoor humidity level ...
... but this past week the humidity on the east coast has been ridiculous - I am in the mid-atlantic and every day is more and more ... Heat vs Humidity. Most of us have had an unbearably hot summer - but this past week the humidity on the east coast has been ... And either humidity or heat can cause this body temperature rise. Normally I can handle 75 degree weather but if the humidity ... And either humidity or heat can cause this body temperature rise. Normally I can handle 75 degree weather but if the humidity ...
... misters and foggers at PetSmart help you monitor and control your reptiles temperature and humidity. ... Reptile Humidity and Temperature Control Give him a safe, healthy, comfortable habitat. With reptile humidity and temperature ... and create an environment where he can thrive with perfect temperature and humidity. ...
Mining Publication: Portable Refuge Alternatives Temperature and Humidity Tests. Keywords: Heat Humidity Refuge chambers ... To investigate heat and humidity buildup in refuge alternatives, NIOSH conducted multiple in-mine, 96-h tests on a 10-person ... Validation of Temperature and Humidity Thermal Model of 23-person Tent-type Refuge Alternative ... has shown that heat and humidity buildup is a major concern with refuge alternatives because they have limited ability to ...
  • The humidity sensor ICs feature excellent long-term stability as a result of a robust silicon carbide construction and an innovative design, improving useful lifetime and lowering effective cost. (
  • Renesas' humidity sensor chips are ideal for a wide range of applications, including measurement of water vapor content in medical oxygen, measurement of humidity in appliances such as refrigerators, monitoring the humidity of air in industrial processes, climate control systems (HVAC), weather stations, portable personal health devices, and anything requiring a humidity detector function. (
  • At humidity sensor IC (also known as an RH sensor or humidity detector) is a device used to measure relative humidity (RH) within a system, and digitally report that information back to the system. (
  • Several factors influence the quality of a humidity sensor, including accuracy, response time, resolution and year-over-year drift. (
  • The SHT21 from Sensirion is a digital humidity and temperature sensor with a easy to use I2C interface. (
  • The antenna's output is also used as a humidity sensor. (
  • Additionally, the material may include a binding agent and a slurry mixture may be formed for placement of the resultant material between electrodes on a substrate so as to form a relative humidity sensor. (
  • Compact all-in-one weather sensor for measurement of temperature , relative humidity and air pressure. (
  • A] film-type humidity sensor inspired by the photonic crystal structure of the cuticle of Hercules beetle was designed and fabricated. (
  • This proposed bioinspired artificial sensor offers alternative sensing mechanism to quantify the environmental humidity in a simple and effective way. (
  • 2010)At 25% humidity, the sensor appears blue-green, but at 98%, it changes to red. (
  • However, the proposed humidity sensor measures directly the level of humidity using the spectrum of visible light without electrical transducers. (
  • Moreover, the simple fabrication process and visible measurement technique make the humidity sensor applicable to various areas. (
  • The humidity sensor would not need electricity to run. (
  • Hi Guys, So I'm looking for a humidity sensor with a Dry Contact output. (
  • Instead, install a humidity sensor that automatically controls the fan switch. (
  • Installing a humidity sensor in your bathroom is a project most DIYers can handle on their own, and one that could save your walls from mildew problems later. (
  • So, install a humidity sensor that's connected to your fan, and automatically shuts it off when appropriate. (
  • In the video above, an electrician demonstrates how to install a humidity sensor as well as adjust it to meet your humidity control needs. (
  • With the NeuLog® Relative Humidity Sensor, you can measure relative humidity instantly or over an extended period of time. (
  • This sensor is great for weather studies or monitoring humidity in a closed system. (
  • The ABS-300 thermal conductivity Absolute Humidity sensor withstands higher temperatures and harsh environments that other sensors do not. (
  • These products feature a composite humidity sensor with a bonded temperature sensor. (
  • With the composite sensor, the relative humidity and the temperature of the sensor are known at all times. (
  • The humidity probe containing the composite sensor is equipped with a heating element. (
  • The dew point temperature of the composite sensor can be calculated using the measured relative humidity and temperature values, and can be used directly as the output parameter. (
  • Sensor heating is another type of heating function available in selected Vaisala humidity measurement products. (
  • Unlike a warmed probe, heating is achieved by directly warming the temperature sensor bonded to the humidity sensor. (
  • We carry a gamut of humidity sensors, whether you need something basic and low-cost like the DHT22, weatherproof outdoor solutions like the SHT-10 Mesh-protected sensor, or STEMMA QT plug-and-play sensors like the Adafruit HTS221 - Temperature & Humidity Sensor Breakout Board. (
  • Take your next outdoor sensor project to the next level with this SHT-30 based temperature/humidity sensor. (
  • The casing is weatherproof and will keep water from seeping into the body of the sensor and damaging it, but allows air to pass through so that it can measure the humidity outside. (
  • The AHT20 is a nice but inexpensive temperature and humidity sensor from the same folks that brought us the DHT22. (
  • This sensor has a typical accuracy of +- 2% relative humidity, and +-0.3 °C at 20-80% RH and 20-60 °C. There is only one I2C address so it's not a good option when you need. (
  • Like the BME280 & BMP280, this precision sensor from Bosch can measure humidity with ±3% accuracy, barometric pressure with ±1. (
  • The SHT31-D sensor has an excellent ±2% relative humidity and ±0.3°C accuracy for most uses. (
  • The sensor moves up and down inside the door of a multi-tenant data center rack to measure heat and humidity at every "U" of height and sends the data to a smart phone app via Bluetooth. (
  • Data center service provider OneNeck IT Solutions this week is touting the capabilities of a new patented rack cabinet robotic sensor that can automatically take detailed heat and humidity measurements on a per-"U" basis as a way to prevent heat spots from interrupting IT operations, especially in multi-tenant environments. (
  • OneNeck IT Solutions sees the technology as a true competitive advantage with its ability to automate the collection of heat and humidity sensor data in a non-intrusive fashion in multi-tenant environment, said Koch, who overseas operations in data centers in nine states, in an interview with CRN. (
  • The robotic sensor is mounted on a track which can stretch from top to bottom in a rack of up to 42U high, and travels up and down the track out of sight when the doors are closed to measure and record the heat and humidity U by U, Koch said. (
  • Absolute humidity describes the water content of air and is expressed in either grams per cubic meter [2] or grams per kilogram [3] . (
  • Relative humidity , expressed as a percentage, indicates a present state of absolute humidity relative to a maximum humidity given the same temperature. (
  • Absolute humidity is the total mass of water vapor present in a given volume or mass of air. (
  • The absolute humidity changes as air temperature or pressure changes, if the volume is not fixed. (
  • As a result, absolute humidity in chemical engineering may refer to mass of water vapor per unit mass of dry air, also known as the humidity ratio or mass mixing ratio (see "specific humidity" below), which is better suited for heat and mass balance calculations. (
  • Absolute humidity finds greatest application in ventilation and air-conditioning problems. (
  • Thus cold air, while its moisture content is necessarily quite low (low absolute humidity), may be almost saturated with respect to the maximum amount of water vapor it is capable of holding (high relative humidity). (
  • If the morning temperature is 20C with a RH of 100% then the same air (i.e. same absolute humidity) will have a RH of 65% when the temperature rises to 27.35C. (
  • What's the difference between relative and absolute humidity? (
  • Warm air can hold more water vapor than cold air, so with the same amount of absolute humidity, air will have a HIGHER relative humidity if the air is cooler, and a LOWER relative humidity if the air is warmer. (
  • Here, we reanalyze these data to explore the effects of absolute humidity on IVT and IVS. (
  • We find that absolute humidity (AH) constrains both transmission efficiency and IVS much more significantly than RH. (
  • In contrast to the commonly used relative humidity, the absolute humidity is a measure of the actual mass of water vapor in a defined volume of air. (
  • Absolute humidity is usually expressed in terms of grams of water per cubic meter. (
  • Absolute humidity may be measured with a sling cyclometer. (
  • The E Instruments TH200 humidity and temperature transmitter measures relative and absolute humidity, dew point, and wet and dry temperature. (
  • However, the rise in "absolute humidity" (moisture in the air) is likely to become the most pervasive factor in climate change across the state . (
  • Absolute humidity, which is typically measured by dew point temperature, increased in Dubuque during springtime by 23 percent from 1970 to 2017. (
  • So changing the temperature of a some air can change the relative humidity, even when the absolute humidity remains constant. (
  • Renesas' relative humidity sensors offer high accuracy and fast measurement response times, enabling customers to improve overall system performance and feedback control. (
  • The humidity and temperature sensors include integrated calibration and temperature compensation logic, providing fully corrected RH and T values via a standard I2C output. (
  • Renesas' humidity sensors feature industry-leading specifications, helping to solve product design challenges and giving customers a competitive advantage. (
  • RTS temperature/humidity sensors are wireless, self-powered sensors that detect temperature/humidity in interior spaces. (
  • These sensors are employed either individually or configured in a system used to either indicate or control the relative humidity. (
  • The HygroCal100 provides a stable test chamber to quickly evaluate the performance of relative humidity sensors across a wide range of 5 to 95% relative humidity. (
  • Rated 2 out of 5 by Alex81 from Inaccurate After 3 Years We purchased a 971 a few years ago to verify our alignments on temperature and humidity sensors. (
  • Dedicated humidity sensors or external computing units are not needed to determine the humidity, resulting in reduced costs and more compact instrumentation. (
  • Sensors can be hard to calibrate due to the difficulty of creating a reference humidity. (
  • No special external equipment or humidity sensors are required, resulting in overall cost reductions in the system. (
  • Warmed-probe technology enables reliable and accurate humidity measurement even in environments with 100% relative humidity (RH), where unheated humidity sensors are unable to measure. (
  • Sensirion Temperature/Humidity sensors are some of the finest & highest-accuracy devices you can get. (
  • Scroll down to watch a video on the exact process on how to calibrate the Vaisala HUMICAP Humidity and Temperature HMT330 Transmitter Series probes with the HMK15 kit. (
  • The WR293 relative humidity transmitter uses the Hygrosmart module, integrated in the interchangeable probe and cable. (
  • The EE220 transmitter from E+E Elektronik measures relative humidity and temperature in the range from -40 °C to 80 °C (-40 °F to 176 °F) with a high accuracy of ±2 % RH and ±0.1 °C (±0.18 °F). The basis unit can be fitted with various pluggable and interchangeable sensing probes. (
  • Transmitter, immune to dust and humidity, comes with optional connector for HC2-probes, integrated relay switch contact, and overload capabilities. (
  • With iTHX-SD Transmitter, user can monitor and record temperature, relative humidity, and dew point over Ethernet network or Internet with no special software required. (
  • Universal outputs for both carbon dioxide and relative humidity allow users to select transmitter output to. (
  • Humidity/Temperature Transmitter operates in hazardous areas. (
  • It is available in Vaisala products such as the smart probe HMP7 and fixed-mount transmitter HMT337 , which are specifically designed for high humidity environments. (
  • If relative humidity or another humidity parameter output is preferred, the HMT337 transmitter needs to be equipped with a separate temperature probe installed in the same measurement environment as the humidity probe. (
  • THURSDAY, June 7, 2018 (HealthDay News) -- Humidity doesn't hinder the ability of flu viruses to infect people, claims a new study that challenges a long-held belief that the viruses become less active in moist conditions. (
  • We deliver world-leading and bespoke instruments for temperature and humidity measurement. (
  • Given in terms of percent humidity (e.g., 50% relative humidity), the measurement allows a comparison of the amount of water vapor in the air with the maximum amount water vapor that - at a given temperature - represents saturation. (
  • The heat index is an integrated measurement of relative humidity and dry air temperature. (
  • The measurement is useful because higher humidity levels retard evaporation from the skin (perspiration) and lower the effectiveness of physiological cooling mechanisms. (
  • Able to integrate with existing monitoring system, PF4 series can be used for differential pressure (DP) andÂ- humidity/temperature measurement and monitoring. (
  • This is necessary as relative humidity is a temperature-dependent parameter and probe heating disturbs the relative humidity measurement. (
  • The new generation of Testo industrial humidity measurement transmitters from the testo 6651 and testo 6681 series was developed specifically for the requirements of industry: high reliability as well as fast commissioning and simple service. (
  • In hot summer weather , a rise in relative humidity increases the apparent temperature to humans (and other animals ) by hindering the evaporation of perspiration from the skin. (
  • colder than dry air of the same temperature because high humidity in cold weather increases the conduction of heat from the body. (
  • As humidity increases it absorbs that and expands, driving the strings sharp. (
  • Depending on the relative humidity of the surrounding air, the evaporation rate increases or decreases or reaches an equilibrium state where evaporation and condensation are occurring at the same pace. (
  • Strands of hair can relax and lengthen when the humidity increases, and then contract again when the humidity decreases. (
  • Increases in humidity have been measured across the Midwest and in Iowa across all seasons and at all long-term monitoring stations. (
  • The increases in water vapor with warmer temperatures are not large enough to maintain a constant relative humidity," Minschwaner said. (
  • Dew occurs when the relative humidity reaches 100 percent. (
  • The dew point is the temperature at which the current amount of moisture in the air reaches 100 percent humidity. (
  • 2019). Low ambient humidity impairs barrier function and innate resistance against influenza infection. (
  • Vaisala Humidity Calibrator HMK15 makes calibration and spot checking of humidity probes and transmitters easy and reliable, although for critical applications we recommend a Vaisala Service Center calibration for best possible results. (
  • DWD) to equip its weather stations with new humidity/temperature transmitters. (
  • Humidity and Temperature Transmitters suit HVAC applications. (
  • therefore, the relative humidity will be higher in the morning (coolest part of the day) than in the afternoon (warmer part of the day). (
  • A humidity-biased temperature responsive switch for controlling an automobile air conditioning compressor which closes at a warmer ambient temperature when the humidity is low than when the humidity is greater. (
  • The humidity will make it feel even warmer. (
  • In the summer, high humidity makes it seem warmer than it is because sweat cannot evaporate from your body. (
  • If you take a look at the chart above, you'll see that if it is 70 degrees F (21 degrees C) inside your home and the humidity is 10 percent, it feels like it is 65 degrees F (18 degrees C). Simply by bringing the humidity up to 70 percent, you can make it feel 5 degrees F (3 degrees C) warmer in your home. (
  • you need to keep humidity 40-50 % during 18 first days, and bump it up to 65-75% during last 3 days (19,20,21). (
  • It can be difficult to maintain indoor humidity levels during the winter months, especially in colder climates where heating systems are constantly running. (
  • A variety of other humidity and moisture related services are available, including detailed characterisation of instruments, and calibration of humidity-generating devices such as humidity generators and humidity calibration systems based on salts or other reference materials. (
  • Separate probes for humidity and temperature enable highly accurate loop calibration. (
  • The use of separate stainless steel sensing probes for humidity and temperature enables most accurate loop calibration, as recommended by the FDA (Food and Drug Administration) for the pharmaceutical and biotechnology industry. (
  • The accredited E+E calibration laboratory (OEKD) has been commissioned by the Austrian Federal Office for Metrology (BEV) to provide the national standards for humidity and air velocity. (
  • The DX overcomes this problem because humidity is determined through a calculation, and calibration of the input can be substituted with calibration of the Pt100ohm range. (
  • Exhaust fans should be used when cooking, washing dishes and other types of cleaning to keep humidity down and reduce the likelihood of a black mold problem. (
  • Highs will be in the mid to upper 90s, but with the higher humidity in place, it will feel like 105 to 110. (
  • The flu virus is less infective at in rooms with higher humidity levels. (
  • The same amount of water vapor results in higher humidity in cool air than warm air. (
  • Relative Humidity it is a measure of the amount of water vapor in the air compared to the total amount of vapor that can exist in the air at its current temperature . (
  • Humidity describes the amount of water vapor or water molecules in the air. (
  • Specific humidity refers to the actual amount of water vapor in the air. (
  • Relative humidity relates to the saturation point, the amount of water vapor in the air divided by the maximum amount of water the air is capable of holding at a given temperature. (
  • We thought this might help explain why flu season occurs in the winter, when humidity is low indoors, but we now have to rethink what's happening with the virus when it's in droplets and aerosols," Marr added. (
  • In areas with cold winters, humidity levels drop indoors during the heating season. (
  • Indoors, humidity levels can fluctuate drastically due to the effects of HVAC systems. (
  • At temperatures typically found indoors, this humidity level makes the air feels approximately what the temperature indicates, and your skin and lungs do not dry out and become irritated. (
  • Three primary measurements of humidity are widely employed: absolute, relative and specific. (
  • Accurate and reliable temperature and humidity measurements are critical to healthcare, industry, meteorology and research. (
  • We also produce bespoke instruments for temperature and humidity measurements with world-leading accuracy and stability. (
  • NPL offers consultancy services which enable access to our world-leading facilities and specialist expertise and span all aspects of temperature, humidity and moisture measurements . (
  • Taking measurements in environments with high relative humidity (over 90%) is always a challenge because the environment is so close to saturation. (
  • We now use the version with a PTFE filter, it'll stay clean while still allowing humidity measurements to work Unlike earlier SHT. (
  • For example, a parcel of air near saturation may contain 28 g (0.99 oz) of water per cubic metre of air at 30 °C (86 °F), but only 8 g (0.28 oz) of water per cubic metre of air at 8 °C (46 °F). Three primary measurements of humidity are widely employed: absolute, relative and specific. (
  • Extended rainfall and humidity can reactivate dormant mould, and it proliferates. (
  • For Iowa agriculture, increased warm-season humidity leads to increased rainfall, extreme rain events, water-logged soils during planting season, soil erosion, and runoff of chemicals to waterways. (
  • If you are standing in the middle of a desert that has not seen rainfall for two months, or if you are breathing air out of a SCUBA tank , then you are experiencing low humidity. (
  • Power outages that knock out air conditioning for extended periods, coupled with late-summer humidity and dampness caused by excessive rainfall, can create 'petri-dish' conditions for mold spores. (
  • The level of cloud formation is an indication of the humidity of the ascending air because - given the standard temperature lapse rate - a parcel of air with a greater relative humidity will experience condensation (e.g., cloud formation) at a lower altitude than a parcel of air with a lower relative humidity. (
  • Excess humidity in the greenhouse may cause disease by making large puddles and condensation on the leaves of plants. (
  • Humidity decreases with altitude. (
  • The relative humidity decreases because the bigger sponge is capable of taking on more moisture, but the same amount of water remains. (
  • If the temperature is 25 degrees C and a cubic meter of air contains 22 grams of water, then the relative humidity is 100 percent. (
  • If it contains 11 grams of water, the relative humidity is 50 percent. (
  • If it contains zero grams of water, relative humidity is zero percent. (
  • This problem is accelerated by high relative humidity conditions. (
  • A temperature-humidity index has been developed by the U.S. National Weather Service that gives a single numerical value in the general range of 70 to 80 reflecting the outdoor atmospheric conditions of temperature and humidity as a measure of comfort (or discomfort) during warm weather. (
  • Measure the temperature on wet and dry bulb thermometers to determine relative humidity. (
  • Humidity is a measure of the quantity of water vapor in the air. (
  • Humidity is a measure only of the vapor content. (
  • To measure humidity at the Smiths' home, Ms Williams used a hygrometer. (
  • He put a solution thick with spores on a tiny, flexible silicon plank, expecting to measure the humidity-driven force in a customized atomic force microscope. (
  • Humidity couples with temperature to create the "heat index" that is a measure of how hot it feels. (
  • Using a related combined heat/humidity measure, the so-called heat index, this would be the equivalent of nearly 170° Fahrenheit of "dry" heat. (
  • So do you happen to know something way cheaper, if I could sense humidity then there are lots of cheap ways to measure temperature and finally calculating dew point. (
  • humidity, moisture content of the atmosphere, a primary element of climate . (
  • In a desert climate with an average temperate of 95 degrees Fahrenheit and average relative humidity of about 30 percent, the WMS1000 generates about 350 liters of water a day. (
  • If you've been diagnosed with COPD and currently live in an area with high humidity levels, you may want to consider moving to a region with a drier climate . (
  • Iowa Climate Statement 2017: It's not just heat, it's humidity Iowans should recognize that the damaging effects of increased humidity rival those of higher temperatures and heavy precipitation. (
  • Uncomfortable humidity, water-logged spring soils, extreme rain events, mold and mosquitoes are all expected to become more prevalent in Iowa due to a rarely discussed impact of climate change: increased humidity. (
  • With fierce heat waves expected to become more common as the climate warms, they say humidity can greatly intensify the effects of the heat by itself. (
  • Humidity levels in this part of the atmosphere, especially in the tropics, are important for global climate, because this is where the water vapor has the strongest impact as a greenhouse gas. (
  • It's got to do with the relative humidity of the air going down as the temperature drops, and then there's less moisture in the air and these respiratory viruses move through the air more easily. (
  • Weather scientists use the term "relative humidity," which Joe Sobel, a meteorologist and senior vice president at Accuweather described as "a comparison of the amount of moisture in the air versus the amount of moisture the air could hold. (
  • Humidity also affects materials, leading to more than just out-of-tune pianos and frizzy hair: Increased moisture in the air accelerates metal corrosion, rot and warping of wood, and peeling of paint. (
  • Humidity is defined as the amount of moisture in the air. (
  • Specific humidity is the ratio of water vapor mass to total moist air parcel mass. (
  • Mass of water per unit volume as in the equation above is also defined as volumetric humidity . (
  • Proximity to large bodies of water and the prevalence of moisture-bearing winds favor high humidity. (
  • Peru's University of Engineering and Technology has designed a billboard that creates clean drinking water from atmospheric humidity. (
  • Temperatures on Sunday will reach well into the 80s, and when you add in the humidity, being by a body of water will be preferable. (
  • Submission: Harvesting energy from humidity - Water droplets can charge Cellphones. (
  • So you can have the relative humidity be 50 or 60 percent, but still feel pretty badly because there is so much water vapor in the air. (
  • The rate of evaporation at a given place is always dependent on the humidity of that place because if the air is already filled with water vapor, it will not have any place to hold excess vapor and therefore, evaporation will occur at an extremely slow rate. (
  • There are a multitude of factors, including relative humidity, that govern the process of evaporation whether it is occurring at a small laboratory or over the surface of a huge water body like a lake or ocean. (
  • I would have thought you loose quite a lot of water by breathing, so it will reduce the amount of water you loose through breathing - although if you are sweating buckets because of the humidity, you may well loose more water than you gain. (
  • If there is no water in the sponge… then the relative humidity would be zero," Sobel said. (
  • Saturate the sponge with half a gallon of water - half of what it is capable of holding - and that relative humidity climbs to 50 percent. (
  • A sponge that is half saturated with water is at 50 percent humidity. (
  • Humidity comes from water evaporating from lakes and oceans. (
  • In heat and high humidity, there are more water molecules in the air to bind and carry odorous particles into our nose. (
  • The relative humidity of air describes the saturation of air with water vapor. (
  • Absorption of water from the ambient air causes the plastic to swell and elongate and resultantly moves the contact into a closed position at a lower temperature than when the humidity is low. (
  • Dragon wing begonias prefer average room temperatures, a healthy dose of water several times each week, average to high humidity levels and moist soils. (
  • Spraying house plants with water is a good way to increase humidity. (
  • The best-known method of increasing air humidity is spraying houseplants with warm water. (
  • They will benefit from the added humidity given off as the water evaporates. (
  • I have to take my eggs out of turner Tuesday & not sure how much water to add (right now the humidity is 48). (
  • In dry state, nanosized holes in the layer are occupied with air (refractive index 1) but the empty holes are filled with water (refractive index 1.33) under high humidity. (
  • Using the affiliated data logger software, users can acquire data for temperature, relative humidity, water vapor concentration, dew point and more. (
  • When the mercury climbs to extreme levels, it's the dangerous humidity produced by heat reacting with water-sodden air that can spell death, not just the heat alone. (
  • Models that include water vapor feedback with constant relative humidity predict the Earth s surface will warm nearly twice as much over the next 100 years as models that contain no water vapor feedback. (
  • Using the UARS data to actually quantify both specific humidity and relative humidity, the researchers found, while water vapor does increase with temperature in the upper troposphere, the feedback effect is not as strong as models have predicted. (
  • Humidity is the concentration of water vapor (water when it's a gas) in the air. (
  • If the relative humidity is 100 percent, it means that water will not evaporate -- the air is already saturated with moisture. (
  • I would expect at -80c that there would be little humidity due to any water vapour being frozen. (
  • Even at well below the triple point, water still exerts a non-zero vapour pressure, which means that humidity will quite happily form at any pressure (1), including standard atmospheric pressure. (
  • The notion of air "holding" water vapor or being "saturated" by it is often mentioned in connection with the concept of relative humidity. (
  • Relative humidity only considers the invisible water vapour. (
  • It can be easily interpreted that if the humidity of a place is low, the rate of evaporation will be faster and if the humidity is high, the rate of evaporation will be low. (
  • Also two different regions may have the same relative humidity but the rate of evaporation of the two regions can be totally different depending upon the holding capacity of the air. (
  • See the table Apparent Temperature for the apparent temperatures for various combinations of room temperature and relative humidity. (
  • As well as calibrations in air near atmospheric pressure, NPL provides humidity calibrations at higher pressures and in a variety of other gases and gas mixtures. (
  • The impact of air pollution (CO, NO, NO2, SO2, O3) and meteorological parameters (air temperature, humidity and atmospheric pressure) on three indicators of human morbidity (circulatory, respiratory and skin diseases) is quantified, while the sensitivity of the results to different model specifications is tested. (
  • For animal life dependent on perspiration ( sweating ) to regulate internal body temperature, high humidity impairs heat exchange efficiency by reducing the rate of moisture evaporation from skin surfaces. (
  • How Does Relative Humidity Affect Evaporation? (
  • To understand the effect of relative humidity on evaporation, it is important to understand the two conditions first. (
  • This experiment gives a fair idea of how does relative humidity affect evaporation. (
  • As humidity is dependent on temperature, wind and other factors, these factors affect evaporation too. (
  • The problem is that most bottles have a less than perfect cork seal and so the humidity impacts the rate of ullage and evaporation from the bottle. (
  • The chemical bonds link the keratin molecules are what give a hair strand its strength and flexibility as well as its predictable response to humidity. (
  • We have constructed a new humidity generator that produces gas streams of known moisture content at temperatures from 85 °C to 200 °C, absolute. (
  • Compared to summer when the moisture content of the air (relative humidity) is an important factor of body discomfort, air moisture has a lesser effect on the human body during outdoor winter activities. (
  • The moisture content of the air is important, and by increasing the relative humidity to above 50% within the above temperature range, 80% or more of all average dressed persons would feel comfortable. (
  • High-salt crystals of human oxy- and deoxyhaemoglobin have been studied at different levels of environmental humidity and solvent content. (
  • At humidity levels of 23 percent, 70 to 77 percent of the flu virus particles were still able to cause an infection an hour after the coughing simulation. (
  • But when humidity levels were raised to 43 percent, just 14 percent of the virus particles had the ability to infect. (
  • The virus just falls apart," at high humidity levels, said study researcher John Noti, of the CDC's National Institute for Occupational Safety and Health. (
  • But the new study more directly assessed how humidity levels might affect flu transmission in a health care setting, and also took into account flu particle size, said study researcher Donald Beezhold, also of the National Institute for Occupational Safety and Health. (
  • During the summer months , it's pretty easy for indoor humidity levels to be up to 30 to 40 percent, Noti said. (
  • But the findings suggest that hospitals might consider raising humidity levels in certain rooms where there might be a high risk for flu transmission, or in rooms with patients who are particularly vulnerable to the flu, such as the intensive care unit (ICU), Noti said. (
  • However, humidity levels should not be too high, because mold starts to grow, Noti said. (
  • The researchers found that mucus and other airway secretions expelled during coughs or sneezes protect flu viruses when they're airborne, regardless of humidity levels. (
  • The team ran the experiment at seven different humidity levels. (
  • The flu virus remained just as infectious at all humidity levels. (
  • Humidity, ozone levels, and pollen counts can affect breathing as well. (
  • During the summer months, you should try to avoid going outside on days when the humidity and ozone levels are high. (
  • According to Dr. Phillip Factor, a pulmonary disease specialist and former professor of medicine at the University of Arizona Medical Center, sensitivity to humidity levels varies among people with COPD. (
  • In general, lower humidity levels are best for people with COPD. (
  • High levels of indoor humidity can also lead to mold growth inside the home. (
  • The relative humidity measured on the ground (where the sponge is) doesn't reflect moisture levels miles above in the sky. (
  • Higher temperatures make higher levels of humidity possible. (
  • When two air masses with different temperatures and levels of humidity meet they form weather fronts. (
  • The time it takes for primer to dry varies with different manufacturers, temperatures and humidity levels. (
  • The humidity level in the average home is often below 30 percent, yet most house plants, even desert dwellers such as cacti, prefer humidity levels of at least 40 percent. (
  • Fitted with a glass lid, it creates a microclimate in which humidity levels rise to almost 100 percent. (
  • If you were aging wines with screwcaps, you wouldn't care about the humidity levels at all. (
  • Temperature and humidity are two important factors in maintaining optimal comfort levels and good indoor air quality. (
  • Since changing moisture levels deform these spores, it followed that devices containing these materials should be able to move in response to changing humidity levels," Mahadevan said. (
  • High levels of humidity create hazardous conditions for Iowa workers and sensitive populations through the danger of heat exhaustion and heatstroke. (
  • Costs of air conditioning to protect materials and improve human comfort levels likewise increase with rising humidity. (
  • In many industries, the importance of monitoring and maintaining temperatures and humidity levels are of the utmost importance. (
  • Anytime temperature or humidity levels need to be monitored, a data logger should be utilized. (
  • When the success or failure of a business depends on humidity and temperature levels, it is crucial to have the 24-hour monitoring capability of a data logger. (
  • In most computer models relative humidity tends to remain fixed at current levels. (
  • Rated 1 out of 5 by StuPidaso from Don't try and get it calibrated or repaired This little meter we use once a month to check humidity levels in agricultural drying facilities. (
  • The chart below lists how hot a given temperature will feel to us in various relative-humidity levels. (
  • Changes in weather, such as -barometric pressure, high humidity, extremes of heat and cold are known to precipitate migraine headaches. (
  • We describe an intuitive and simple method for exploiting humidity driven volume changes in carboxymethyl cellulose (CMC) to fabricate a humidity responsive. (
  • According to the Mayo Clinic, the ideal indoor humidity level is 30 to 50 percent . (
  • To achieve an optimal indoor humidity level, you can purchase a humidifier that works with your central heating unit. (
  • Too much indoor humidity can lead to an increase in common indoor air pollutants, such as dust mites , bacteria, and viruses. (
  • Indoor humidity should ultimately be reduced to between 30 percent and 60 percent to decrease black mold growth. (
  • Despite this, the indoor humidity hovers around 50% (has ranged 48 - 53, but mostly 50+). (
  • Relative humidity measures how much of the air's current moisture capacity is used. (
  • The OTT TRH unit reliably measures the relative humidity and temperature in a large variety of applications. (
  • In fact, the rate of change in the length of hair strands is so dependable that they can actually be used as the basis for a hygrometer, a device that measures the humidity level in the air. (
  • Much of the Island can expect temperatures in the upper 80s, feeling more like lower 90s in some cases, thanks to humidity, said Tim Morrin, weather service meteorologist based in Upton. (
  • Using extension cables and without dismounting the EE220 basis unit, the humidity probe can be placed in a portable humidity calibrator and the temperature probe in a dry block calibrator. (
  • Hot heat and high humidity will continue through the weekend. (
  • Any area with high humidity is susceptible to black mold problems. (
  • That's because the relative humidity of cold outdoor air drops as it is warmed up. (
  • Those short 20% drops in humidity are not going to dry out your corks enough to make a difference. (
  • It's well known that where humidity drops, a spike in flu incidence and mortality occurs. (
  • Relative humidity is an important metric used in weather forecasts and reports, as it is an indicator of the likelihood of precipitation , dew, or fog. (
  • Cold weather, high humidity and big daily temperature swings brought more stroke hospitalizations. (
  • Cold weather, high humidity and big daily temperature swings seem to land more people in the hospital with strokes. (
  • In weather forecasting, humidity that is expressed as a percentage is called relative humidity. (
  • The blaze, known as the Bobcat Fire, is expected to grow through Sunday and Monday as critical fire weather conditions continued due to gusty wind and low humidity. (
  • Ms. Wolf and others with naturally curly hair should be able to straighten their hair in Connecticut if they choose on Thursday with the dew point in the upper 50s to near 60 degrees, but it won't last long as the humidity will be increasing in the coming days. (
  • It's a T-shirt kind of day in Washington, DC: 85 degrees with 63 percent humidity. (
  • Today my cellar sits comfortable at 51.7 degrees and 65% humidity, so I'm not pulling my hair out about this but I am concerned. (
  • Humidity depends on the temperature and pressure of the system of interest. (
  • 78% humidity is mold territory (anything over 70% I believe). (
  • What Humidity Level Does Black Mold Start to Grow? (
  • A relative humidity greater than 55 percent is enough to support the growth of black mold. (
  • A variety of factors can lead to the increase in humidity in a home and create the perfect environment for black mold to grow. (
  • There is a higher relative humidity there, since the temperatures are cooler, creating moisture for black mold to flourish. (
  • Optimal mold growth occurs in 70- to 80-degree temperatures and relative humidity above 65 percent,' said Peter Duncanson, director of disaster-restoration training for ServiceMaster Clean. (
  • Each 5-degree rise in the dew point (humidity) raised the risk by 2 percent. (
  • But Lima's Pacific Coast location experiences humidity of more than 90 percent on summer days, from December to February. (
  • This ratio is given in percentage and therefore, if it is said that the relative humidity or RH is 40 percent, it means that the air contains 40 percent of the maximum vapor it could possibly hold at a temperature. (
  • Now consider if both the hot and cold areas have the same relative humidity of 70 percent. (
  • 1. Fifty percent humidity is a sponge half full. (
  • So 100 percent humidity might not mean rain, but it does mean dew. (
  • And if the temperature outside is 65 and the dew point is 65, then the relative humidity is 100 percent. (
  • A relative humidity of 50 percent means that the air holds 50 percent of the moisture possible at the current temperature. (
  • A relative humidity of 100 percent means that the air is completely saturated with moisture. (
  • Relative humidity of 50 to 60 percent is probably ideal for both house plants and people. (
  • Delicate, thin-leaved house plants require a humidity level of over 70 percent, a level that is hard to achieve in a large room. (
  • If the relative humidity is 100 percent, we feel much hotter than the actual temperature indicates because our sweat does not evaporate at all. (
  • For best indoor comfort and health, a relative humidity of about 45 percent is ideal. (
  • In the winter, relative humidity is often much lower than 45 percent, and in the summer it is sometimes higher. (
  • Humidity is measured by means of a hygrometer . (
  • We provide primary humidity standards and humidity calibrations with UKAS (ISO 17025) accreditation, for numerous hygrometer types, over a very wide range of humidity and temperature conditions. (
  • To achieve this, the antenna is loaded with an interdigital capacitor with humidity-dependent capacitance. (