Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed)
Finely divided solid matter with particle sizes smaller than a micrometeorite, thus with diameters much smaller than a millimeter, moving in interplanetary space. (NASA Thesaurus, 1994)
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
Family of house dust mites, in the superfamily Analgoidea, order Astigmata. They include the genera Dermatophagoides and Euroglyphus.
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.
The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.
Quartz (SiO2). A glassy or crystalline form of silicon dioxide. Many colored varieties are semiprecious stones. (From Grant & Hackh's Chemical Dictionary, 5th ed)
A diffuse parenchymal lung disease caused by inhalation of dust and by tissue reaction to their presence. These inorganic, organic, particulate, or vaporized matters usually are inhaled by workers in their occupational environment, leading to the various forms (ASBESTOSIS; BYSSINOSIS; and others). Similar air pollution can also have deleterious effects on the general population.
A product of hard secondary xylem composed of CELLULOSE, hemicellulose, and LIGNANS, that is under the bark of trees and shrubs. It is used in construction and as a source of CHARCOAL and many other products.
The exposure to potentially harmful chemical, physical, or biological agents by inhaling them.
A condition of BRONCHOCONSTRICTION resulting from hypersensitive reaction to inhaled dust during the initial processing of cotton, flax, or hemp in the textile industry. Symptoms include wheezing and tightness in the chest.
Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.
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 contamination of indoor air.
Supplies used in building.
Antigen-type substances that produce immediate hypersensitivity (HYPERSENSITIVITY, IMMEDIATE).
The surface of a structure upon which one stands or walks.
The aggregate business enterprise of manufacturing textiles. (From Random House Unabridged Dictionary, 2d ed)
'Mining' in medical terminology is not a commonly used term, but it can refer to the process of extracting or excavating minerals or other resources from the earth, which can have health impacts such as respiratory diseases and hearing loss among workers in the mining industry.
A natural fuel formed by partial decomposition of vegetable matter under certain environmental conditions.
Species of European house dust mite, in the family PYROGLYPHIDAE. It is the most commonly found house dust mite.
Proteins synthesized by organisms belonging to the phylum ARTHROPODA. Included in this heading are proteins from the subdivisions ARACHNIDA; CRUSTACEA; and HORSESHOE CRABS. Note that a separate heading for INSECT PROTEINS is listed under this heading.
The presence of bacteria, viruses, and fungi in the air. This term is not restricted to pathogenic organisms.
Living facilities for humans.
A form of pneumoconiosis resulting from inhalation of dust containing crystalline form of SILICON DIOXIDE, usually in the form of quartz. Amorphous silica is relatively nontoxic.
Diseases in persons engaged in cultivating and tilling soil, growing plants, harvesting crops, raising livestock, or otherwise engaged in husbandry and farming. The diseases are not restricted to farmers in the sense of those who perform conventional farm chores: the heading applies also to those engaged in the individual activities named above, as in those only gathering harvest or in those only dusting crops.
Species of American house dust mite, in the family PYROGLYPHIDAE.
Ground up seed of WHEAT.
The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.
Any enterprise centered on the processing, assembly, production, or marketing of a line of products, services, commodities, or merchandise, in a particular field often named after its principal product. Examples include the automobile, fishing, music, publishing, insurance, and textile industries.
The planning of the furnishings and decorations of an architectural interior.
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.
Standards for limiting worker exposure to airborne contaminants. They are the maximum concentration in air at which it is believed that a particular substance will not produce adverse health effects with repeated daily exposure. It can be a time-weighted average (TLV-TWA), a short-term value (TLV-STEL), or an instantaneous value (TLV-Ceiling). They are expressed either as parts per million (ppm) or milligram per cubic meter (mg/m3).
The maximum exposure to a biologically active physical or chemical agent that is allowed during an 8-hour period (a workday) in a population of workers, or during a 24-hour period in the general population, which does not appear to cause appreciable harm, whether immediate or delayed for any period, in the target population. (From Lewis Dictionary of Toxicology, 1st ed)
Toxins closely associated with the living cytoplasm or cell wall of certain microorganisms, which do not readily diffuse into the culture medium, but are released upon lysis of the cells.
Diseases of the respiratory system in general or unspecified or for a specific respiratory disease not available.
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)
"In the context of medicine, 'textiles' refers to the use of woven, knitted, or nonwoven materials, often as components of medical devices such as bandages, sutures, or implantable materials, which can be designed to have specific properties like biocompatibility, breathability, or antimicrobial activity."
Relating to the size of solids.
Respiratory tract diseases are a broad range of medical conditions that affect the nose, throat, windpipe, and lungs, impairing breathing and oxygen uptake, including asthma, chronic obstructive pulmonary disease (COPD), pneumonia, bronchitis, influenza, tuberculosis, and sleep apnea.
The care and management of property.
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.
Any solid objects moving in interplanetary space that are smaller than a planet or asteroid but larger than a molecule. Meteorites are any meteoroid that has fallen to a planetary surface. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Asbestos. Fibrous incombustible mineral composed of magnesium and calcium silicates with or without other elements. It is relatively inert chemically and used in thermal insulation and fireproofing. Inhalation of dust causes asbestosis and later lung and gastrointestinal neoplasms.
The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)
A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL).
A type of asbestos that occurs in nature as the dihydrate of magnesium silicate. It exists in two forms: antigorite, a plated variety, and chrysotile, a fibrous variety. The latter makes up 95% of all asbestos products. (From Merck Index, 11th ed, p.893)
Respirators to protect individuals from breathing air contaminated with harmful dusts, fogs, fumes, mists, gases, smokes, sprays, or vapors.
Altered reactivity to an antigen, which can result in pathologic reactions upon subsequent exposure to that particular antigen.

Post-shift changes in pulmonary function in a cement factory in eastern Saudi Arabia. (1/1985)

This cross-sectional study was conducted in 1992 in the oldest of three Portland cement producing factories in Eastern Saudi Arabia. The respirable dust level was in excess of the recommended ACGIH level in all sections. Spirometry was done for 149 cement workers and 348 controls, using a Vitalograph spirometer. FEV1, FVC, FEV1/FVC% and FEF25-75% were calculated and corrected to BTPS. A significantly higher post-shift reduction FEV1, FEV1/FVC% and FEF25-75% was observed in the exposed subjects. Multiple regression analysis showed a significant relationship between post-shift changes and exposure to cement dust but failed to support any relationship with smoking. These findings may indicate an increase in the bronchial muscle tone leading to some degree of bronchoconstriction as a result of an irritant effect induced by the acute exposure to cement dust.  (+info)

Asthma visits to emergency rooms and soybean unloading in the harbors of Valencia and A Coruna, Spain. (2/1985)

Soybean unloading in the harbor of Barcelona, Spain, has been associated with large increases in the numbers of asthma patients treated in emergency departments between 1981 and 1987. In this study, the association between asthma and soybean unloading in two other Spanish cities, Valencia and A Coruna, was assessed. Asthma admissions were retrospectively identified for the period 1993-1995, and harbor activities were investigated in each location. Two approaches were used to assess the association between asthma and soybean unloading: One used unusual asthma days (days with an unusually high number of emergency room asthma visits) as an effect measure, and the other estimated the relative increase in the daily number of emergency room visits by autoregressive Poisson regression, adjusted for meteorologic variables, seasonality, and influenza incidence. No association between unusual asthma days and soya unloading was observed in either Valencia or A Coruna, except for one particular dock in Valencia. When the association between unloaded products and the daily number of emergency asthma visits was studied, a statistically significant association was observed for unloading of soya husk (relative risk = 1.50, 95% confidence interval 1.16-1.94) and soybeans (relative risk = 1.31, 95% confidence interval 1.08-1.59) in A Coruna. In Valencia, a statistical association was found only for the unloading of soybeans at two particular docks. Although these findings support the notion that asthma outbreaks are not a common hidden condition in most harbors where soybeans are unloaded, the weak associations reported are likely to be causal. Therefore, appropriate control measures should be implemented to avoid soybean dust emissions, particularly in harbors with populations living in the vicinity.  (+info)

Mechanisms and mediators in coal dust induced toxicity: a review. (3/1985)

Chronic inhalation of coal dust can cause several lung disorders, including simple coal workers pneumoconiosis (CWP), progressive massive fibrosis (PMF), chronic bronchitis, lung function loss, and emphysema. This review focuses on the cellular actions and interactions of key inflammatory cells and target cells in coal dust toxicity and related lung disorders, i.e. macrophages and neutrophils, epithelial cells, and fibroblasts. Factors released from or affecting these cells are outlined in separate sections, i.e. (1) reactive oxygen species (ROS) and related antioxidant protection mechanisms, and (2) cytokines, growth factors and related proteins. Furthermore, (3) components of the extracellular matrix (ECM), including the modifying role of ROS, cytokines, proteases and antiproteases are discussed in relation to tissue damage and remodelling in the respiratory tract. It is recognised that inhaled coal dust particles are important non-cellular and cellular sources of ROS in the lung, and may be significantly involved in the damage of lung target cells as well as important macromolecules including alpha-1-antitrypsin and DNA. In vitro and in vivo studies with coal dusts showed the up-regulation of important leukocyte recruiting factors, e.g. Leukotriene-B4 (LTB4), Platelet Derived Growth Factor (PDGF), Monocyte Chemotactic Protein-1 (MCP-1), and Tumor Necrosis Factor-alpha (TNF alpha), as well as the neutrophil adhesion factor Intercellular Adhesion Molecule-1 (ICAM-1). Coal dust particles are also known to stimulate the (macrophage) production of various factors with potential capacity to modulate lung cells and/or extracellular matrix, including O2-., H2O2, and NO, fibroblast chemoattractants (e.g. Transforming Growth Factor-beta (TGF beta), PDGF, and fibronectin) and a number of factors that have been shown to stimulate and/or inhibit fibroblast growth or collagen production such as (TNF alpha, TGF beta, PDGF, Insulin Like Growth Factor, and Prostaglandin-E2). Further studies are needed to clarify the in vivo kinetics and relative impact of these factors.  (+info)

Personal exposure to dust, endotoxin and crystalline silica in California agriculture. (4/1985)

AIMS: The aim of this study was to measure personal exposure to dust, endotoxin and crystalline silica during various agricultural operations in California over a period of one year. METHODS: Ten farms were randomly selected in Yolo and Solano counties and workers were invited to wear personal sampling equipment to measure inhalable and respirable dust levels during various operations. The samples were analysed for endotoxin using the Limulus Amebocyte Lysate assay and crystalline silica content using X-ray diffraction. In total 142 inhalable samples and 144 respirable samples were collected. RESULTS: The measurements showed considerable difference in exposure levels between various operations, in particular for the inhalable fraction of the dust and the endotoxin. Machine harvesting of tree crops (Geometric mean (GM) = 45.1 mg/m3) and vegetables (GM = 7.9 mg/m3), and cleaning of poultry houses (GM = 6.7 mg/m3) showed the highest inhalable dust levels. Cleaning of poultry houses also showed the highest inhalable endotoxin levels (GM = 1861 EU/m3). Respirable dust levels were generally low, except for machine harvesting of tree crops (GM = 2.8 mg/m3) and vegetables (GM = 0.9 mg/m3). Respirable endotoxin levels were also low. For the inhalable dust fraction, levels were reduced considerably when an enclosed cabin was present. The percentage of crystalline silica was overall higher in the respirable dust samples than the inhalable dust samples. CONCLUSIONS: Considerable differences exist in personal exposure levels to dust, endotoxin and crystalline silica during various agricultural operations in California agriculture with some operations showing very high levels.  (+info)

Fine particulate air pollution, resuspended road dust and respiratory health among symptomatic children. (5/1985)

The short-term association of particulate air pollution with peak expiratory flow rate (PEF) and respiratory symptoms was examined. Forty-nine children with chronic respiratory symptoms aged 8-13 yrs were followed daily for six weeks in spring, 1995, in Kuopio, Finland. Daily concentrations of particulate material with a 50% cut-off aerodynamic diameter < or = 10 microm and < or = 2.5 microm (PM10 and PM2.5, respectively), black carbon, and the number concentrations of particles from 0.01-10 microm diameter were measured. During the study period, PM10 were mainly resuspended soil and street dust, and the concentration was estimated using aluminum content of PM10 samples. No consistent effect of particles was found as the associations varied by lag. Of the lags examined, only 1-day lagged PM2.5 was statistically significantly associated with morning PEF (beta=-1.06, SE=0.52 (per interquartile increase in pollutant)). Evening PEF was significantly associated with the 1-day lagged number of particles in the size range 0.1-1.0 microm (beta=-1.56, SE=0.72). One-day lagged PM10, PM2.5-10, PM2.5 and resuspended PM10, and 4-day average of PM2.5 were significantly associated with increased risk of cough. Given the short duration of the study, separating the effects of different types of particles was difficult. The present study demonstrates the highly variable size and number distribution and chemical composition of particles in Finland, and underlines the importance of measuring the size and chemical composition of particles to determine which types of particles are associated with health effects.  (+info)

Contributory and exacerbating roles of gaseous ammonia and organic dust in the etiology of atrophic rhinitis. (6/1985)

Pigs reared commercially indoors are exposed to air heavily contaminated with particulate and gaseous pollutants. Epidemiological surveys have shown an association between the levels of these pollutants and the severity of lesions associated with the upper respiratory tract disease of swine atrophic rhinitis. This study investigated the role of aerial pollutants in the etiology of atrophic rhinitis induced by Pasteurella multocida. Forty, 1-week-old Large White piglets were weaned and divided into eight groups designated A to H. The groups were housed in Rochester exposure chambers and continuously exposed to the following pollutants: ovalbumin (groups A and B), ammonia (groups C and D), ovalbumin plus ammonia (groups E and F), and unpolluted air (groups G and H). The concentrations of pollutants used were 20 mg m-3 total mass and 5 mg m-3 respirable mass for ovalbumin dust and 50 ppm for ammonia. One week after exposure commenced, the pigs in groups A, C, E, and G were infected with P. multocida type D by intranasal inoculation. After 4 weeks of exposure to pollutants, the pigs were killed and the extent of turbinate atrophy was assessed with a morphometric index (MI). Control pigs kept in clean air and not inoculated with P. multocida (group H) had normal turbinate morphology with a mean MI of 41.12% (standard deviation [SD], +/- 1. 59%). In contrast, exposure to pollutants in the absence of P. multocida (groups B, D, and F) induced mild turbinate atrophy with mean MIs of 49.65% (SD, +/-1.96%), 51.04% (SD, +/-2.06%), and 49.88% (SD, +/-3.51%), respectively. A similar level of atrophy was also evoked by inoculation with P. multocida in the absence of pollutants (group G), giving a mean MI of 50.77% (SD, +/-2.07%). However, when P. multocida inoculation was combined with pollutant exposure (groups A, C, and E) moderate to severe turbinate atrophy occurred with mean MIs of 64.93% (SD, +/-4.64%), 59.18% (SD, +/-2.79%), and 73.30% (SD, +/-3.19%), respectively. The severity of atrophy was greatest in pigs exposed simultaneously to dust and ammonia. At the end of the exposure period, higher numbers of P. multocida bacteria were isolated from the tonsils than from the nasal membrane, per gram of tissue. The severity of turbinate atrophy in inoculated pigs was proportional to the number of P. multocida bacteria isolated from tonsils (r2 = 0.909, P < 0.05) and nasal membrane (r2 = 0.628, P < 0.05). These findings indicate that aerial pollutants contribute to the severity of lesions associated with atrophic rhinitis by facilitating colonization of the pig's upper respiratory tract by P. multocida and also by directly evoking mild atrophy.  (+info)

Evidence for suppressed activity of the transcription factor NFAT1 at its proximal binding element P0 in the IL-4 promoter associated with enhanced IL-4 gene transcription in T cells of atopic patients. (7/1985)

Allergen-specific T cells in atopic patients are polarized IL-4-producing Th2 cells, promoting IgE synthesis by B cells. The molecular basis for increased IL-4 gene expression in atopy is not fully understood. IL-4 gene regulation in general involves the nuclear factor of activated T cells (NFAT) family of transcription factors, of which NFAT1 and NFAT2 are most prominent in peripheral T cells. Recently, a unique inhibitory role of NFAT1 in IL-4 gene control was shown in the mouse. In a series of electrophoretic mobility shift assays with protein extracts of highly polarized Th2 clones from atopics and Th1 clones from controls we compared DNA-binding activities at the two NFAT-binding elements P0 and P1 of the crucial proximal human IL-4 promoter. At the most proximal P0 site, NFAT-containing complexes devoid of NFAT2 were readily inducible in the Th1 clones, but hardly or not in the Th2 clones. In contrast, both in Th1 and Th2 clones NFAT-containing complexes were strongly inducible at the P1 site, consisting of NFAT2 and a P0-compatible NFAT activity, without apparent differences between Th1 and Th2 clones. Like in Th2 clones, suppressed NFAT-P0 complex formation was observed also at the polyclonal level in peripheral blood mononuclear cells (PBMC) of three of five severe atopic dermatitis patients with strongly elevated serum IgE levels, but not in control PBMC. These findings suggest that high-level IL-4 production in atopic Th2 cells is associated with selective reduction of suppressive NFAT1 activity at the IL-4 P0 element and that some patients with this multifactorial disease may have a putative systemic disorder at this level.  (+info)

High concentrations of heavy metals in neighborhoods near ore smelters in northern Mexico. (8/1985)

In developing countries, rapid industrialization without environmental controls has resulted in heavy metal contamination of communities. We hypothesized that residential neighborhoods located near ore industries in three northern Mexican cities would be heavily polluted with multiple contaminants (arsenic, cadmium, and lead) and that these sites would be point sources for the heavy metals. To evaluate these hypotheses, we obtained samples of roadside surface dust from residential neighborhoods within 2 m of metal smelters [Torreon (n = 19)] and Chihuahua (n = 19)] and a metal refinery [Monterrey (n = 23)]. Heavy metal concentrations in dust were mapped with respect to distance from the industrial sites. Correlation between dust metal concentration and distance was estimated with least-squares regression using log-transformed data. Median dust arsenic, cadmium, and lead concentrations were 32, 10, and 277 microg/g, respectively, in Chihuahua; 42, 2, and 467 microg/g, respectively, in Monterrey, and 113, 112, and 2,448 microg/g, respectively, in Torreon. Dust concentrations of all heavy metals were significantly higher around the active smelter in Torreon, where more than 90% of samples exceeded Superfund cleanup goals. At all sites, dust concentrations were inversely related to distance from the industrial source, implicating these industries as the likely source of the contamination. We concluded that residential neighborhoods around metal smelting and refining sites in these three cities are contaminated by heavy metals at concentrations likely to pose a health threat to people living nearby. Evaluations of human exposure near these sites should be conducted. Because multiple heavy metal pollutants may exist near smelter sites, researchers should avoid attributing toxicity to one heavy metal unless others have been measured and shown not to coexist.  (+info)

In medical terms, "dust" is not defined as a specific medical condition or disease. However, generally speaking, dust refers to small particles of solid matter that can be found in the air and can come from various sources, such as soil, pollen, hair, textiles, paper, or plastic.

Exposure to certain types of dust, such as those containing allergens, chemicals, or harmful pathogens, can cause a range of health problems, including respiratory issues like asthma, allergies, and lung diseases. Prolonged exposure to certain types of dust, such as silica or asbestos, can even lead to serious conditions like silicosis or mesothelioma.

Therefore, it is important for individuals who work in environments with high levels of dust to take appropriate precautions, such as wearing masks and respirators, to minimize their exposure and reduce the risk of health problems.

Cosmic dust, also known as extraterrestrial dust or space dust, refers to tiny particles of solid matter that are present in outer space. These particles are primarily made up of rock, metal, and organic material, and they can vary in size from a few nanometers to several hundred micrometers in diameter.

Cosmic dust is formed through various processes, including the cooling and condensation of gas in interstellar clouds, supernova explosions, collisions between asteroids and comets, and the erosion of larger bodies such as planets and moons. The dust is constantly being created and destroyed in space, and it plays a critical role in the formation and evolution of stars, planets, and other celestial objects.

In addition to its importance in astrophysics, cosmic dust also has implications for human health and technology. When cosmic dust enters Earth's atmosphere, it can interact with water vapor and other chemicals to form tiny particles that can serve as nuclei for cloud formation. These particles can have a significant impact on climate and weather patterns.

Furthermore, cosmic dust can pose a risk to spacecraft and astronauts in space. The tiny particles can damage sensitive equipment and pose a health hazard to astronauts who are exposed to them during spacewalks or other extravehicular activities. As a result, understanding the properties and behavior of cosmic dust is an important area of research for both astrophysicists and engineers working in the field of space exploration.

Occupational air pollutants refer to harmful substances present in the air in workplaces or occupational settings. These pollutants can include dusts, gases, fumes, vapors, or mists that are produced by industrial processes, chemical reactions, or other sources. Examples of occupational air pollutants include:

1. Respirable crystalline silica: A common mineral found in sand, stone, and concrete that can cause lung disease and cancer when inhaled in high concentrations.
2. Asbestos: A naturally occurring mineral fiber that was widely used in construction materials and industrial applications until the 1970s. Exposure to asbestos fibers can cause lung diseases such as asbestosis, lung cancer, and mesothelioma.
3. Welding fumes: Fumes generated during welding processes can contain harmful metals such as manganese, chromium, and nickel that can cause neurological damage and respiratory problems.
4. Isocyanates: Chemicals used in the production of foam insulation, spray-on coatings, and other industrial applications that can cause asthma and other respiratory symptoms.
5. Coal dust: Fine particles generated during coal mining, transportation, and handling that can cause lung disease and other health problems.
6. Diesel exhaust: Emissions from diesel engines that contain harmful particulates and gases that can cause respiratory and cardiovascular problems.

Occupational air pollutants are regulated by various government agencies, including the Occupational Safety and Health Administration (OSHA) in the United States, to protect workers from exposure and minimize health risks.

I apologize for any confusion, but "Pyroglyphidae" is not a medical term. It is actually a family of small arthropods, specifically mites, that are often found in houses and other buildings. These mites are commonly known as dust mites or storage mites, and some species are associated with allergies and asthma symptoms in humans. If you have any questions related to medical terminology, I'll be happy to help!

Mites are tiny arthropods belonging to the class Arachnida, which also includes spiders and ticks. They are characterized by their small size, usually measuring less than 1 mm in length, and their lack of obvious segmentation on their bodies. Many mites are parasitic, feeding on the skin cells, blood, or fluids of plants and animals, including humans. Some common mite infestations in humans include scabies, caused by the itch mite (Sarcoptes scabiei), and dust mites (e.g., Dermatophagoides pteronyssinus and D. farinae), which are commonly found in household dust and can cause allergic reactions in some people. It's worth noting that the majority of mites are not harmful to humans and play important roles in ecosystems as decomposers and predators.

Occupational exposure refers to the contact of an individual with potentially harmful chemical, physical, or biological agents as a result of their job or occupation. This can include exposure to hazardous substances such as chemicals, heavy metals, or dusts; physical agents such as noise, radiation, or ergonomic stressors; and biological agents such as viruses, bacteria, or fungi.

Occupational exposure can occur through various routes, including inhalation, skin contact, ingestion, or injection. Prolonged or repeated exposure to these hazards can increase the risk of developing acute or chronic health conditions, such as respiratory diseases, skin disorders, neurological damage, or cancer.

Employers have a legal and ethical responsibility to minimize occupational exposures through the implementation of appropriate control measures, including engineering controls, administrative controls, personal protective equipment, and training programs. Regular monitoring and surveillance of workers' health can also help identify and prevent potential health hazards in the workplace.

I'm sorry for any confusion, but "quartz" is not a medical term. Quartz is a mineral that is one of the most common minerals on Earth. It is found in many different types of rocks and is made up of silicon dioxide (SiO2). It is often used in electronics and watches because of its piezoelectric properties, which means it can generate an electric charge when subjected to pressure or stress.

It does not have any direct relation with medical field, although there are some Quartz based equipment like quartz crystal microbalance (QCM) sensors that are used in medical research for the detection of biomolecules and pathogens.

Pneumoconiosis is a group of lung diseases caused by inhaling dust particles, leading to fibrosis or scarring of the lungs. The type of pneumoconiosis depends on the specific dust inhaled. Examples include coal worker's pneumoconiosis (from coal dust), silicosis (from crystalline silica dust), and asbestosis (from asbestos fibers). These diseases are generally preventable by minimizing exposure to harmful dusts through proper engineering controls, protective equipment, and workplace safety regulations.

I'm sorry for any confusion, but "Wood" is not a medical term. It is a common name for various hard, fibrous tissues that make up the trunks and branches of trees and shrubs, as well as a term used for a wide range of items made from these materials. If you have any medical concerns or questions, I would be happy to try and help answer those for you.

Inhalation exposure is a term used in occupational and environmental health to describe the situation where an individual breathes in substances present in the air, which could be gases, vapors, fumes, mist, or particulate matter. These substances can originate from various sources, such as industrial processes, chemical reactions, or natural phenomena.

The extent of inhalation exposure is determined by several factors, including:

1. Concentration of the substance in the air
2. Duration of exposure
3. Frequency of exposure
4. The individual's breathing rate
5. The efficiency of the individual's respiratory protection, if any

Inhalation exposure can lead to adverse health effects, depending on the toxicity and concentration of the inhaled substances. Short-term or acute health effects may include irritation of the eyes, nose, throat, or lungs, while long-term or chronic exposure can result in more severe health issues, such as respiratory diseases, neurological disorders, or cancer.

It is essential to monitor and control inhalation exposures in occupational settings to protect workers' health and ensure compliance with regulatory standards. Various methods are employed for exposure assessment, including personal air sampling, area monitoring, and biological monitoring. Based on the results of these assessments, appropriate control measures can be implemented to reduce or eliminate the risks associated with inhalation exposure.

Byssinosis is a respiratory condition that primarily affects textile workers who are exposed to high levels of cotton, flax, or hemp dust. It's also known as brown lung disease. The medical definition of byssinosis is:

A restrictive lung disease characterized by chest tightness, cough, and shortness of breath that typically occurs in workers exposed to high levels of organic dust from cotton, flax, or hemp. The symptoms usually appear after the first day of exposure (known as "Monday fever") and improve with continued exposure during the week, only to recur again at the beginning of the next workweek. Chronic byssinosis can lead to progressive shortness of breath, chronic cough, and significant lung function impairment. The exact mechanism by which the dust causes the disease is not fully understood but may involve an immune response or direct toxicity to the airways.

Silicon dioxide is not a medical term, but a chemical compound with the formula SiO2. It's commonly known as quartz or sand and is not something that would typically have a medical definition. However, in some cases, silicon dioxide can be used in pharmaceutical preparations as an excipient (an inactive substance that serves as a vehicle or medium for a drug) or as a food additive, often as an anti-caking agent.

In these contexts, it's important to note that silicon dioxide is considered generally recognized as safe (GRAS) by the U.S. Food and Drug Administration (FDA). However, exposure to very high levels of respirable silica dust, such as in certain industrial settings, can increase the risk of lung disease, including silicosis.

Environmental monitoring is the systematic and ongoing surveillance, measurement, and assessment of environmental parameters, pollutants, or other stressors in order to evaluate potential impacts on human health, ecological systems, or compliance with regulatory standards. This process typically involves collecting and analyzing data from various sources, such as air, water, soil, and biota, and using this information to inform decisions related to public health, environmental protection, and resource management.

In medical terms, environmental monitoring may refer specifically to the assessment of environmental factors that can impact human health, such as air quality, water contamination, or exposure to hazardous substances. This type of monitoring is often conducted in occupational settings, where workers may be exposed to potential health hazards, as well as in community-based settings, where environmental factors may contribute to public health issues. The goal of environmental monitoring in a medical context is to identify and mitigate potential health risks associated with environmental exposures, and to promote healthy and safe environments for individuals and communities.

Indoor air pollution refers to the contamination of air within buildings and structures due to presence of particles, gases, or biological materials that can harmfully affect the health of occupants. These pollutants can originate from various sources including cooking stoves, heating systems, building materials, furniture, tobacco products, outdoor air, and microbial growth. Some common indoor air pollutants include particulate matter, carbon monoxide, nitrogen dioxide, sulfur dioxide, volatile organic compounds (VOCs), and mold. Prolonged exposure to these pollutants can cause a range of health issues, from respiratory problems to cancer, depending on the type and level of exposure. Effective ventilation, air filtration, and source control are some of the strategies used to reduce indoor air pollution.

Construction materials are substances or components that are used in the building and construction of infrastructure, such as buildings, roads, bridges, and other structures. These materials can be naturally occurring, like wood, stone, and clay, or they can be manufactured, like steel, concrete, and glass. The choice of construction material depends on various factors, including the project's requirements, structural strength, durability, cost, and sustainability.

In a medical context, construction materials may refer to the substances used in the construction or fabrication of medical devices, equipment, or furniture. These materials must meet strict regulations and standards to ensure they are safe, biocompatible, and do not pose a risk to patients or healthcare workers. Examples of medical construction materials include surgical-grade stainless steel, medical-grade plastics, and radiation-shielding materials used in the construction of medical imaging equipment enclosures.

An allergen is a substance that can cause an allergic reaction in some people. These substances are typically harmless to most people, but for those with allergies, the immune system mistakenly identifies them as threats and overreacts, leading to the release of histamines and other chemicals that cause symptoms such as itching, sneezing, runny nose, rashes, hives, and difficulty breathing. Common allergens include pollen, dust mites, mold spores, pet dander, insect venom, and certain foods or medications. When a person comes into contact with an allergen, they may experience symptoms that range from mild to severe, depending on the individual's sensitivity to the substance and the amount of exposure.

I'm sorry for any confusion, but "Floors and Floorcoverings" is not a medical term. It refers to the physical structures and materials used to cover floors in buildings or homes. If you have any medical terms that you would like me to define, please let me know!

I'm sorry for any confusion, but "Textile Industry" and "medical definition" are not related. The textile industry is the overall system of designing, producing, and distributing clothing and their raw materials, which include fiber, yarn, and cloth. It involves several processes such as spinning, weaving, knitting, dyeing, and finishing.

If you're looking for a medical term or definition, please provide me with the term so I can assist you better.

I'm sorry for any confusion, but "mining" is not a term that has a widely accepted medical definition. It is most commonly associated with the extraction of minerals from the earth in the field of geology and mining engineering. If you have any questions related to health or medicine, I would be happy to try to help answer those for you!

I apologize for any confusion, but "coal" is not a medical term. Coal is a black or brownish-black sedimentary rock that is formed from the accumulation and preservation of plant materials, usually in a swamp environment. It is commonly used as a fuel source due to its high carbon content. If you have any questions about medical terminology or health-related topics, I would be happy to help answer them.

'Dermatophagoides pteronyssinus' is a species of mite that belongs to the family Pyroglyphidae. These mites are commonly known as house dust mites, and they are found in various environments, particularly in households. They thrive in warm and humid conditions, and their primary food source consists of human skin scales.

House dust mites like 'Dermatophagoides pteronyssinus' are associated with allergic reactions in humans, such as asthma, rhinitis, and dermatitis. Their feces and body parts contain protease enzymes that can trigger an immune response in sensitive individuals, leading to the release of histamine and other inflammatory mediators. These allergens can become airborne and inhaled or come into contact with the skin, causing symptoms such as sneezing, runny nose, itchy eyes, and difficulty breathing.

It is essential to maintain a clean living environment, particularly in bedding and upholstered furniture, to reduce the population of house dust mites and minimize allergen exposure. Measures such as using allergen-impermeable covers for mattresses and pillows, washing bedding in hot water, and reducing humidity levels can help control dust mite populations and alleviate allergic symptoms.

Arthropods are a phylum of animals that includes insects, spiders, crustaceans, and other creatures with jointed appendages. Arthropod proteins, therefore, refer to the proteins that are found in these organisms. These proteins play various roles in the structure, function, and regulation of arthropod cells, tissues, and organs.

Arthropod proteins can be classified into several categories based on their functions, such as structural proteins, enzymes, signaling proteins, and defense proteins. Structural proteins provide support and protection to the arthropod exoskeleton, which is composed mainly of chitin and proteins. Enzymes are proteins that catalyze chemical reactions in arthropod metabolism, while signaling proteins regulate various physiological processes, including growth, development, and reproduction. Defense proteins protect arthropods from pathogens, parasites, and environmental stressors.

Arthropod proteins have attracted significant interest in biomedical research due to their potential applications in drug discovery, vaccine development, and diagnostic tools. For example, some arthropod proteins have been identified as promising targets for the development of new insecticides and antiparasitic drugs. Additionally, arthropod-derived proteins have been used in the production of recombinant vaccines against infectious diseases such as Lyme disease and malaria.

Understanding the structure and function of arthropod proteins is essential for advancing our knowledge of arthropod biology, evolution, and ecology. It also has important implications for human health, agriculture, and environmental conservation.

Air microbiology is the study of microorganisms, such as bacteria, fungi, and viruses, that are present in the air. These microorganisms can be suspended in the air as particles or carried within droplets of liquid, such as those produced when a person coughs or sneezes.

Air microbiology is an important field of study because it helps us understand how these microorganisms are transmitted and how they may affect human health. For example, certain airborne bacteria and fungi can cause respiratory infections, while airborne viruses can cause diseases such as the common cold and influenza.

Air microbiology involves various techniques for collecting and analyzing air samples, including culturing microorganisms on growth media, using molecular biology methods to identify specific types of microorganisms, and measuring the concentration of microorganisms in the air. This information can be used to develop strategies for controlling the spread of airborne pathogens and protecting public health.

I'm sorry for any confusion, but "housing" is not a term that has a medical definition. In a general sense, housing refers to a place where someone lives, such as a house or apartment. If you have any questions related to healthcare, medicine, or health-related topics, I would be happy to try to help answer them.

Silicosis is a lung disease caused by inhalation of crystalline silica dust. It is characterized by the formation of nodular lesions and fibrosis (scarring) in the upper lobes of the lungs, which can lead to symptoms such as shortness of breath, cough, and fatigue. The severity of the disease depends on the duration and intensity of exposure to silica dust. Chronic silicosis is the most common form and develops after prolonged exposure, while acute silicosis can occur after brief, intense exposures. There is no cure for silicosis, and treatment is focused on managing symptoms and preventing further lung damage.

"Agricultural Workers' Diseases" is a term used to describe a variety of health conditions and illnesses that are associated with agricultural work. These can include both acute and chronic conditions, and can be caused by a range of factors including exposure to chemicals, dusts, allergens, physical injuries, and biological agents such as bacteria and viruses.

Some common examples of Agricultural Workers' Diseases include:

1. Pesticide poisoning: This can occur when agricultural workers are exposed to high levels of pesticides or other chemicals used in farming. Symptoms can range from mild skin irritation to severe neurological damage, depending on the type and amount of chemical exposure.
2. Respiratory diseases: Agricultural workers can be exposed to a variety of dusts and allergens that can cause respiratory problems such as asthma, bronchitis, and farmer's lung. These conditions are often caused by prolonged exposure to moldy hay, grain dust, or other organic materials.
3. Musculoskeletal injuries: Agricultural workers are at risk of developing musculoskeletal injuries due to the physical demands of their job. This can include back pain, repetitive strain injuries, and sprains and strains from lifting heavy objects.
4. Zoonotic diseases: Agricultural workers who come into contact with animals are at risk of contracting zoonotic diseases, which are illnesses that can be transmitted between animals and humans. Examples include Q fever, brucellosis, and leptospirosis.
5. Heat-related illnesses: Agricultural workers who work outside in hot weather are at risk of heat-related illnesses such as heat exhaustion and heat stroke.

Prevention of Agricultural Workers' Diseases involves a combination of engineering controls, personal protective equipment, and training to help workers understand the risks associated with their job and how to minimize exposure to hazards.

Dermatophagoides farinae is a species of mite that belongs to the family Pyroglyphidae. These mites are commonly known as house dust mites, and they are found in household environments all over the world. Dermatophagoides farinae mites feed on human skin cells and other organic debris, and they are often found in bedding, upholstered furniture, and carpeting.

House dust mites, including Dermatophagoides farinae, are a common cause of allergies. The proteins present in the mite's feces and body parts can trigger an immune response in some people, leading to symptoms such as sneezing, runny nose, itchy eyes, and skin irritation. Dermatophagoides farinae is one of the most prevalent species of house dust mite found in North America.

It's worth noting that while house dust mites are often associated with poor hygiene or dirty environments, they can be found even in the cleanest homes. Regular cleaning and vacuuming, as well as the use of allergen-proof covers on bedding, can help reduce the number of house dust mites in the home and alleviate symptoms for those who are allergic to them.

I'm sorry for any confusion, but "flour" is not a medical term. It is a powder made by grinding raw grains, roots, beans, nuts, or seeds. The most common type is wheat flour, which is made from grinding wheat grains. Flour is a primary ingredient in many foods such as bread, pasta, and baked goods. I hope this clarifies any confusion! If you have any medical questions, I'd be happy to help.

Environmental exposure refers to the contact of an individual with any chemical, physical, or biological agent in the environment that can cause a harmful effect on health. These exposures can occur through various pathways such as inhalation, ingestion, or skin contact. Examples of environmental exposures include air pollution, water contamination, occupational chemicals, and allergens. The duration and level of exposure, as well as the susceptibility of the individual, can all contribute to the risk of developing an adverse health effect.

I believe there may be some confusion in your question. "Industry" is a general term that refers to a specific branch of economic activity, or a particular way of producing goods or services. It is not a medical term with a defined meaning within the field of medicine.

However, if you are referring to the term "industrious," which can be used to describe someone who is diligent and hard-working, it could be applied in a medical context to describe a patient's level of engagement and effort in their own care. For example, a patient who is conscientious about taking their medications as prescribed, following through with recommended treatments, and making necessary lifestyle changes to manage their condition might be described as "industrious" by their healthcare provider.

I'm sorry for any confusion, but "Interior Design and Furnishings" is not a term that has a medical definition. Interior design refers to the planning, designing, and coordinating of spaces in residential, commercial, or industrial buildings to create functional and aesthetically pleasing environments. This can include selecting colors, furniture, lighting, flooring, and other decorative materials. Furnishings generally refer to the items such as furniture, curtains, rugs, and other decorative elements that are used to make a space comfortable and attractive.

If you have any questions related to medical topics or definitions, I would be happy to try to help answer them for you!

"Gossypium" is the scientific name for the cotton plant. It belongs to the Malvaceae family and is native to tropical and subtropical regions around the world. The cotton plant produces soft, fluffy fibers that are used to make a wide variety of textiles, including clothing, bedding, and other household items.

The medical community may use the term "Gossypium" in certain contexts, such as when discussing allergic reactions or sensitivities to cotton products. However, it is more commonly used in botany and agriculture than in medical terminology.

Threshold Limit Values (TLVs) are defined by the American Conference of Governmental Industrial Hygienists (ACGIH) as "airborne concentrations of substances and physical agents to which most workers can be exposed day after day for a normal 8-hour workday and 40-hour workweek, without adverse health effects." TLVs are based on available scientific data and are designed to provide guidance to occupational health professionals in making decisions regarding safe levels of exposure to various workplace hazards.

TLVs are divided into three categories:

1. Time-weighted average (TWA): This is the average airborne concentration of a substance or physical agent to which a worker can be exposed for an 8-hour workday and 40-hour workweek, without experiencing adverse health effects.
2. Short-term exposure limit (STEL): This is the maximum concentration of a substance or physical agent to which a worker can be exposed for a short period of time (usually 15 minutes) without experiencing significant irritation, narcosis, or other acute toxic effects. STELs are intended to protect workers from brief, but potentially hazardous, exposures.
3. Ceiling limit (CL): This is the concentration of a substance or physical agent that should not be exceeded at any time during the workday. Ceiling limits are designed to protect workers from the potential acute effects of high-concentration exposures.

It's important to note that TLVs are guidelines and not regulatory standards, meaning they do not have the force of law. However, many organizations and companies use TLVs as a basis for establishing their own exposure limits and workplace safety policies.

The Maximum Allowable Concentration (MAC) is a term used in occupational health to refer to the highest concentration of a hazardous substance (usually in air) that should not cause harmful effects to most workers if they are exposed to it for a typical 8-hour workday, 5 days a week. It's important to note that MAC values are based on average population data and may not protect everyone, particularly those who are sensitive or susceptible to the substance in question.

It's also crucial to differentiate MAC from other similar terms such as the Permissible Exposure Limit (PEL) or Threshold Limit Value (TLV), which are used in different regulatory contexts and may have slightly different definitions and criteria.

Please consult with a certified industrial hygienist, occupational health professional, or other appropriate experts for specific guidance related to hazardous substance exposure limits.

Endotoxins are toxic substances that are associated with the cell walls of certain types of bacteria. They are released when the bacterial cells die or divide, and can cause a variety of harmful effects in humans and animals. Endotoxins are made up of lipopolysaccharides (LPS), which are complex molecules consisting of a lipid and a polysaccharide component.

Endotoxins are particularly associated with gram-negative bacteria, which have a distinctive cell wall structure that includes an outer membrane containing LPS. These toxins can cause fever, inflammation, and other symptoms when they enter the bloodstream or other tissues of the body. They are also known to play a role in the development of sepsis, a potentially life-threatening condition characterized by a severe immune response to infection.

Endotoxins are resistant to heat, acid, and many disinfectants, making them difficult to eliminate from contaminated environments. They can also be found in a variety of settings, including hospitals, industrial facilities, and agricultural operations, where they can pose a risk to human health.

Respiratory disorders are a group of conditions that affect the respiratory system, including the nose, throat (pharynx), windpipe (trachea), bronchi, lungs, and diaphragm. These disorders can make it difficult for a person to breathe normally and may cause symptoms such as coughing, wheezing, shortness of breath, and chest pain.

There are many different types of respiratory disorders, including:

1. Asthma: A chronic inflammatory disease that causes the airways to become narrow and swollen, leading to difficulty breathing.
2. Chronic obstructive pulmonary disease (COPD): A group of lung diseases, including emphysema and chronic bronchitis, that make it hard to breathe.
3. Pneumonia: An infection of the lungs that can cause coughing, chest pain, and difficulty breathing.
4. Lung cancer: A type of cancer that forms in the tissues of the lungs and can cause symptoms such as coughing, chest pain, and shortness of breath.
5. Tuberculosis (TB): A bacterial infection that mainly affects the lungs but can also affect other parts of the body.
6. Sleep apnea: A disorder that causes a person to stop breathing for short periods during sleep.
7. Interstitial lung disease: A group of disorders that cause scarring of the lung tissue, leading to difficulty breathing.
8. Pulmonary fibrosis: A type of interstitial lung disease that causes scarring of the lung tissue and makes it hard to breathe.
9. Pleural effusion: An abnormal accumulation of fluid in the space between the lungs and chest wall.
10. Lung transplantation: A surgical procedure to replace a diseased or failing lung with a healthy one from a donor.

Respiratory disorders can be caused by a variety of factors, including genetics, exposure to environmental pollutants, smoking, and infections. Treatment for respiratory disorders may include medications, oxygen therapy, breathing exercises, and lifestyle changes. In some cases, surgery may be necessary to treat the disorder.

Ventilation, in the context of medicine and physiology, refers to the process of breathing, which is the exchange of air between the lungs and the environment. It involves both inspiration (inhaling) and expiration (exhaling). During inspiration, air moves into the lungs, delivering oxygen to the alveoli (air sacs) where gas exchange occurs. Oxygen is taken up by the blood and transported to the body's cells, while carbon dioxide, a waste product, is expelled from the body during expiration.

In a medical setting, ventilation may also refer to the use of mechanical devices, such as ventilators or respirators, which assist or replace the breathing process for patients who are unable to breathe effectively on their own due to conditions like respiratory failure, sedation, neuromuscular disorders, or injuries. These machines help maintain adequate gas exchange and prevent complications associated with inadequate ventilation, such as hypoxia (low oxygen levels) and hypercapnia (high carbon dioxide levels).

I'm sorry for any confusion, but "textiles" is not a term that is typically used in a medical context. In general, textiles refer to the broad category of flexible materials made by weaving, knitting, braiding, or felting fibers together. They include things like clothing, upholstery, and other soft goods.

In a medical setting, terms such as "medical textiles" or "healthcare textiles" might be used to refer to textile-based products that are specifically designed for use in medical applications, such as bandages, wound dressings, sutures, and implantable materials. These products must meet strict regulatory requirements to ensure their safety and effectiveness.

However, it's important to note that while some healthcare professionals may be familiar with the term "textiles" in this context, it is not a standard medical term and would not be used in a formal medical definition.

In the context of medical and health sciences, particle size generally refers to the diameter or dimension of particles, which can be in the form of solid particles, droplets, or aerosols. These particles may include airborne pollutants, pharmaceutical drugs, or medical devices such as nanoparticles used in drug delivery systems.

Particle size is an important factor to consider in various medical applications because it can affect the behavior and interactions of particles with biological systems. For example, smaller particle sizes can lead to greater absorption and distribution throughout the body, while larger particle sizes may be filtered out by the body's natural defense mechanisms. Therefore, understanding particle size and its implications is crucial for optimizing the safety and efficacy of medical treatments and interventions.

Respiratory tract diseases refer to a broad range of medical conditions that affect the respiratory system, which includes the nose, throat (pharynx), windpipe (trachea), bronchi, bronchioles, and lungs. These diseases can be categorized into upper and lower respiratory tract infections based on the location of the infection.

Upper respiratory tract infections affect the nose, sinuses, pharynx, and larynx, and include conditions such as the common cold, flu, sinusitis, and laryngitis. Symptoms often include nasal congestion, sore throat, cough, and fever.

Lower respiratory tract infections affect the trachea, bronchi, bronchioles, and lungs, and can be more severe. They include conditions such as pneumonia, bronchitis, and tuberculosis. Symptoms may include cough, chest congestion, shortness of breath, and fever.

Respiratory tract diseases can also be caused by allergies, irritants, or genetic factors. Treatment varies depending on the specific condition and severity but may include medications, breathing treatments, or surgery in severe cases.

I'm not a medical professional, but I can tell you that "housekeeping" is not a term typically used in a medical context. It generally refers to the maintenance and cleaning of living spaces or workplaces. However, in a healthcare setting, "housekeeping" may refer to the environmental services department responsible for maintaining cleanliness and infection control within the facility. This includes tasks such as cleaning patient rooms, common areas, and medical equipment to prevent the spread of infections and maintain a safe environment for patients, staff, and visitors.

Air pollutants are substances or mixtures of substances present in the air that can have negative effects on human health, the environment, and climate. These pollutants can come from a variety of sources, including industrial processes, transportation, residential heating and cooking, agricultural activities, and natural events. Some common examples of air pollutants include particulate matter, nitrogen dioxide, sulfur dioxide, ozone, carbon monoxide, and volatile organic compounds (VOCs).

Air pollutants can cause a range of health effects, from respiratory irritation and coughing to more serious conditions such as bronchitis, asthma, and cancer. They can also contribute to climate change by reacting with other chemicals in the atmosphere to form harmful ground-level ozone and by directly absorbing or scattering sunlight, which can affect temperature and precipitation patterns.

Air quality standards and regulations have been established to limit the amount of air pollutants that can be released into the environment, and efforts are ongoing to reduce emissions and improve air quality worldwide.

I'm sorry for any confusion, but "meteoroids" is not a term used in medical definitions. It is a term from the field of astronomy. Meteoroids are small particles or bits of rock that are traveling in space. When they enter the Earth's atmosphere, they can become meteors (also known as "shooting stars") and can sometimes make it to the ground as meteorites.

Asbestos is a group of naturally occurring mineral fibers that are resistant to heat, chemical reactions, and electrical currents. There are six types of asbestos, but the most common ones are chrysotile, amosite, and crocidolite. Asbestos has been widely used in various construction materials, such as roofing shingles, ceiling and floor tiles, paper products, and cement products.

Exposure to asbestos can cause serious health problems, including lung cancer, mesothelioma (a rare form of cancer that affects the lining of the lungs, heart, or abdomen), and asbestosis (a chronic lung disease characterized by scarring of the lung tissue). These health risks are related to the inhalation of asbestos fibers, which can become lodged in the lungs and cause inflammation and scarring over time.

As a result, the use of asbestos has been heavily regulated in many countries, and its use is banned in several others. Despite these regulations, asbestos remains a significant public health concern due to the large number of buildings and products that still contain it.

I'm sorry for any confusion, but "metallurgy" is not a term that has a medical definition. Metallurgy is a branch of materials science that deals with the properties, physical and chemical behavior, and production of metals. It involves studying the techniques and processes used to isolate, alloy, and fabricate various types of metal products. If you have any questions related to medicine or health, I'd be happy to try to help answer those for you!

Asthma is a chronic respiratory disease characterized by inflammation and narrowing of the airways, leading to symptoms such as wheezing, coughing, shortness of breath, and chest tightness. The airway obstruction in asthma is usually reversible, either spontaneously or with treatment.

The underlying cause of asthma involves a combination of genetic and environmental factors that result in hypersensitivity of the airways to certain triggers, such as allergens, irritants, viruses, exercise, and emotional stress. When these triggers are encountered, the airways constrict due to smooth muscle spasm, swell due to inflammation, and produce excess mucus, leading to the characteristic symptoms of asthma.

Asthma is typically managed with a combination of medications that include bronchodilators to relax the airway muscles, corticosteroids to reduce inflammation, and leukotriene modifiers or mast cell stabilizers to prevent allergic reactions. Avoiding triggers and monitoring symptoms are also important components of asthma management.

There are several types of asthma, including allergic asthma, non-allergic asthma, exercise-induced asthma, occupational asthma, and nocturnal asthma, each with its own set of triggers and treatment approaches. Proper diagnosis and management of asthma can help prevent exacerbations, improve quality of life, and reduce the risk of long-term complications.

'Asbestos, serpentine' is a type of asbestos mineral that belongs to the serpentine group of minerals. The serpentine group of minerals is characterized by its sheet or layered structure, in which each silicate tetrahedron shares three oxygen atoms with adjacent tetrahedra, forming a continuous two-dimensional sheet.

The most common type of asbestos mineral in the serpentine group is chrysotile, also known as white asbestos or serpentine asbestos. Chrysotile fibers are curly and flexible, which makes them easier to weave into textiles and other materials. As a result, chrysotile has been widely used in a variety of industrial and commercial applications, such as insulation, roofing, flooring, and cement products.

However, exposure to chrysotile fibers has been linked to several serious health problems, including lung cancer, mesothelioma, and asbestosis. As a result, the use of chrysotile and other types of asbestos has been banned or restricted in many countries around the world.

Respiratory Protective Devices (RPDs) are personal protective equipment items designed to protect the user from inhalation of hazardous substances or harmful levels of airborne contaminants in the environment. These devices create a physical barrier between the user's respiratory system and the surrounding air, filtering out or purifying the air before it is breathed in.

RPDs can be categorized into two main types:

1. **Air-purifying Respirators (APRs):** These devices use filters, cartridges, or canisters to remove contaminants from the surrounding air. They are further divided into several subcategories, including filtering facepiece respirators, half-mask elastomeric respirators, full-facepiece elastomeric respirators, and powered air-purifying respirators (PAPRs).
2. **Supplied-Air Respirators (SARs):** These devices deliver clean breathing air from an external source, either through a compressor or compressed air cylinder. They are further divided into two subcategories: self-contained breathing apparatuses (SCBAs) and supplied-air respirators with escape provisions.

The choice of RPD depends on the nature and concentration of the airborne contaminants, the user's physiological and psychological capabilities, and the work environment. Proper selection, fitting, use, maintenance, and training are crucial to ensure the effectiveness and safety of Respiratory Protective Devices.

Hypersensitivity is an exaggerated or inappropriate immune response to a substance that is generally harmless to most people. It's also known as an allergic reaction. This abnormal response can be caused by various types of immunological mechanisms, including antibody-mediated reactions (types I, II, and III) and cell-mediated reactions (type IV). The severity of the hypersensitivity reaction can range from mild discomfort to life-threatening conditions. Common examples of hypersensitivity reactions include allergic rhinitis, asthma, atopic dermatitis, food allergies, and anaphylaxis.

House dust can become airborne easily. Care is required when removing dust to avoid causing the dust to become airborne. A ... Dust in this regime has a complicated emission spectrum and includes both thermal dust emission and spinning dust emission. ... Recently, initiatives such as Project-Dust have been established to directly study dust in the Middle East. Dust kicked up by ... Contamination control Dust bunny Dust explosion Hanānā Lint (material) Medical geology Mineral dust Nephelometer Occupational ...
... (Persian: دوست محمد, also Romanized as Dūst Moḩammad; also known as Dūst Moḩammad Khān) is a city in, and the ... Dust Mohammad can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3061888" in the ... Iran portal OpenStreetMap contributors (11 April 2023). "Dust Mohammad, Hirmand County" (Map). OpenStreetMap. Retrieved 11 ... and also serves as capital of the county and of Dust Mohammad Rural District. At the 2006 census, its population was 6,902 in ...
... s can carry large amounts of dust, with the leading edge being composed of a wall of thick dust as much as 1.6 km ( ... Coccidioidomycosis Dry line Dust storm warning Haboob Iberulites List of dust storms Mineral dust Saharan Air Layer Shamal ( ... 12-hour U.S. map of surface dust concentrations Mouse-over an hour block on the row for 'Surface Dust Concentrations' Dust in ... In other instances, dust (but not sand) may be lifted as high as 6,000 m (20,000 ft). Dust storms are a major health hazard. ...
... may refer to: Dustoff or casualty evacuation, the emergency evacuation of casualties from a combat zone Dust-Off, ... cleaning utensil This disambiguation page lists articles associated with the title Dust off. If an internal link led you here, ...
Dust is also seen among her fellow students in a class session in X-Men Legacy 260.1. Dust appears again as part of the ... Dust is too afraid of Belasco, believing him to be the Devil, but when X-23 is seemingly killed, Dust breaks free and attacks ... For Dust, her eyes tell the whole story, of faith and pain, of belief and bravery." In 2014, BuzzFeed ranked Dust 81st in their ... Dust happily rejoins her teammates and her revival convinces the Young X-Men not to disband. Dust is seen with Emma and Mercury ...
Official Dust-Off Website Fotospeed UK Dust Off Snopes: Adolescents huffing from cans of Dust-Off brand compressed air have ... Dust-Off is manufactured by Falcon Safety Products located in Branchburg, NJ. Dust-Off was developed and introduced in 1970 by ... Dust-Off is a brand of dust cleaner (refrigerant-based propellant cleaner, which is not compressed air and incorrectly called " ... Falcon developed Dust-Off II as a cleaning device to help rid damaging dust and lint from the new technology including screens ...
Dust (DJ Muggs album) (2003) Dust (Dust album) (1971) Dust (Laurel Halo album) (2017) Dust (Ben Monder album) (1997) Dust ( ... Dust (Screaming Trees album) (1996) Dust (Tremonti album) (2016) "Dust" (Royworld song) "Dust" (Eli Young Band song) "Dust", a ... "dust" on Wikipedia. Dustiness Dust to Dust (disambiguation) Dusted (disambiguation) Dustin (disambiguation) Dusting ( ... Pellegrino Dust, a 2001 novel by Arthur Slade Dust, a comic book series from Image Comics "Dust", a poem by Rupert Brooke Dust ...
Another thing different from Dust is that Dust II did not undergo any other major layout changes. Dust II was developed by ... Dust II is the successor to "Dust", another Counter-Strike map, and was developed by David Johnston before the official release ... Johnston stated in a blog post that, in making Dust II, he "had to ensure that this new map had everything in common with Dust ... Johnston originally titled it "Dust 3" because he did not think it was a worthy successor to Dust; before the game's launch it ...
A dust mask is also used to prevent the wearer from inhaling dust or sand in a dust storm. A dust mask is worn in the same ... Dust masks are used in environments with dusts encountered during construction or cleaning activities, such as dusts from ... Dust masks do not protect against chemicals such as vapors and mists. For this reason, it is dangerous to confuse dust masks ... A dust mask is a flexible paper pad held over the nose and mouth by elastic or rubber straps for personal comfort against non- ...
O'Connor, Alice (18 August 2010). "Chahi's 'Project Dust' Renamed 'From Dust,' Shown off in Tech Demo Trailer". Shacknews. ... and From Dust would utilise their superior capacity to operate the simulation. From Dust was released for the Xbox 360 on 27 ... From Dust has the option of two main game modes, one being the Story mode, the other a Challenge mode. The former consists of a ... From Dust is a god video game, designed by Éric Chahi and developed by Ubisoft Montpellier. The game was released for Microsoft ...
While neural dust can use a traditional amplifier to sense a action potentials, in the case of an ultrasound based neural dust ... The term is derived from "smart dust", as the sensors used as neural dust may also be defined by this concept. The design for ... The principal components of the neural dust system include the sensor nodes (neural dust), which aim to be in the 10-100 µm3 ... which would sit below the dura mater and would provide both power and a communication link to the neural dust. Neural dust ...
Asian dust Bull dust Coal dust Occupational dust exposure Fugitive Dust Control Self-inspection Handbook: How to Control Dust ... Large-scale fugitive dust driven by gust fronts creates a dust storm. Surfaces susceptible to fugitive dust emissions are both ... A significant volume of fugitive dust that is visible from a distance is known as a dust cloud, and a large dust cloud driven ... fugitive dust is dust that has "escaped" during any mechanical process and entered the atmosphere. Fugitive dust emissions ...
Interplanetary medium Interplanetary dust Interstellar dust Intergalactic dust Extinction (astronomy) Star formation Sparke, L ... A dust lane consists of relatively dense, obscuring clouds of interstellar dust, observed as a dark swath against the ... These dust lanes can usually be seen in spiral galaxies, such as the Milky Way, when viewed from the edge. Due to the dense and ... This dust, as well as the gasses also found within these lanes, mix and combine to form stars and planets. ...
... is the third studio album by progressive metal band Skyharbor, released on September 7, 2018 by eOne Music & Good ... "Album Review: "Sunshine Dust" by Skyharbor". The Sound Board. Retrieved 10 September 2018. Leivers, Dannii (5 September 2018 ... After two additional singles, "Blind Side" and "Synthetic Hands", the band stated that the album, now titled Sunshine Dust, ... Metal Hammer was more charitable, commending the strengths of the new line-up and concluding, "Sunshine Dust continues ...
... (Persian: غريب دوست, also Romanized as Gharīb Dūst; also known as Qarīb Dūst) is a village in Barvanan-e Gharbi ... Gharib Dust can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3064238" in the " ...
Such a dust trajectory sensor can be combined with an aerogel dust collector in order to form an active dust collector or with ... This approach is called Dust Astronomy which is carried out by means of a dust telescope on a dust observatory in space". Three ... Rosetta characterized collected comet dust by sophisticated dust analyzers like the dust detector GIADA, a high-resolution ... or interstellar dust; no dust is left there from the times of planetary formation. Dust particles in most space environments ...
At the premiere, Dust received rave reviews. Dance critic Jann Parry wrote that Dust was a "resounding success for Khan as ... Dust is a one-act contemporary ballet about World War I, choreographed by Akram Khan, music by Jocelyn Pook and created for the ... In 2014, Dust, along with two other commissioned works for Lest We Forget premiered at Barbican Centre, which was not built for ... Akram Khan's Dust was commissioned for the English National Ballet's mixed bill, Lest We Forget, which is about the first world ...
... is a 2005 American documentary film starring Ramsey Clark, Juan Gonzalez, Rosalie Bertell, Helen Caldicott, Michio ... The film is a documentary about U.S. soldiers returning from Iraq who had been exposed to radioactive dust from dirty bombs ... Archived 2008-05-02 at the Wayback Machine Poison Dust at ...
... (Indo G album), 1998 Angel Dust (Z-Ro album), 2012 "Angel Dust", a song by Tim Scott "Angel Dust", a song by Gil ... "Angel Dust", a song by Mac Miller from the 2014 mixtape Faces "Angel Dust", a song by Azahriah released in 2021 Dust of Angels ... Angel dusting, a misleading marketing practice Angel Dust (comics), a fictional mutant Angel Dust, a manga by Kouta Hirano ... Look up angel dust in Wiktionary, the free dictionary. Angel dust may refer to: A common name for the drug phencyclidine (PCP) ...
... describes disorders caused by excessive exposure to dust storms, particularly during the Dust Bowl in the United ... Symptoms of dust pneumonia include high fever, chest pain, difficulty in breathing, and coughing. With dust pneumonia, dust ... Dust pneumonia was featured in the work of several musicians and artists of the day, such as Woody Guthrie's song "Dust ... In 1935, dozens of people died in Kansas from dust pneumonia. Red Cross volunteers made and distributed thousands of dust masks ...
... can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3802495" in the " ... Dust Vand (Persian: دوستوند, also Romanized as Dūst Vand and Dūstvand) is a village in Baladarband Rural District, in the ...
Big Finish Productions - Dust Breeding Dust Breeding on Tardis at Fandom, an external wiki (Articles with short description, ... Dust Breeding is a Big Finish Productions audio drama based on the long-running British science fiction television series ... The name of the planet Duchamp 331 is almost certainly a reference to artist Marcel Duchamp, and Dust Breeding a reference to ... So he and Ace visit a colony of artists on the barren dust world of Duchamp 331 to find out more. He isn't expecting the return ...
... is an original graphic novel based on the Buffy the Vampire Slayer television series. The first ever Buffyverse ... each hopes to bring a champion to town to fight to the death in a magical ritual called the Dust Waltz. The Waltz involves ...
In the polar regions of Earth, diamond dust may persist for several days without interruption. Diamond dust is similar to fog ... serial photos of Diamond Dust Diamond dust briefly observed at Tsukuba, Japan. These are serial photos out of a movie; note ... diamond dust can often reduce the visibility, in some cases to under 600 m (2,000 ft). The depth of the diamond dust layer can ... To form diamond dust the temperature must be below the freezing point of water, 0 °C (32 °F), or the ice cannot form or would ...
... ~". Retrieved 2020-03-01. (Pages using the EasyTimeline extension, CS1 maint: multiple names: ... At the end of the year, Silver Dust began a collaboration with the Swiss label Escudero Records. In early 2016, Silver Dust ... SILVER DUST ~". Retrieved 2019-10-19. Jura, www rfj ch, RFJ, Radio Fréquence (29 August 2018). "Magma à la ... Silver Dust is a Swiss rock band formed in 2013 in Porrentruy by the singer and guitarist Lord Campbell. He is especially known ...
"Devils & Dust". Retrieved 2014-09-22. Stephen Thomas Erlewine (2005-04-26). "Devils & Dust - Bruce Springsteen ... Devils and Dust received five Grammy Award nominations, three for the song "Devils & Dust"; Song of the Year and Best Rock Song ... "Devils & Dust" featured in soundchecks during The Rising Tour in 2003. The following year it was on the set list for at least ... Devils & Dust at Discogs (list of releases) (CS1 German-language sources (de), CS1 Spanish-language sources (es), CS1 Swedish- ...
... (ダスト8, dasutoeito) is a Japanese manga by Osamu Tezuka. The original title was "Dust 18". The story was serialized in ... p. 5. Dust 8 in the Tezuka World database Dust 18 (manga) at Anime News Network's encyclopedia (CS1 Japanese-language sources ( ... "Dust 8" ("Dust 18" was revised and retitled for the book), which was altered for inclusion in Kodansha's complete works. I ... Dust No. 1) An office worker that is one of the survivors. Just as he arrives at the airport after being rescued, he loses his ...
Beck had the Dust Brothers produce his album Odelay, released in 1996. The album spawned the hits "Where It's At" (#64 on the ... The Dust Brothers also co-produced three songs on the Rolling Stones album, Bridges to Babylon. The next year, the duo were ... The Dust Brothers are a pair of songwriters and producers consisting of E.Z. Mike (Michael Simpson) and King Gizmo (John King ... The Dust Brothers name and trademark was used by the British duo that eventually became the Chemical Brothers as they began ...
... at IMDb To Dust at Rotten Tomatoes To Dust at AllMovie (Articles with short description, Short description is different ... "To Dust (2019) - Box Office Mojo". Box Office Mojo. Retrieved August 1, 2019. "To Dust (2018)". Walloh.Movies. Retrieved 5 July ... "To Dust". Metacritic. Retrieved 12 July 2019. Roeper, Richard (14 February 2019). "'To Dust': A cantor and a professor walk ... Harvey, Dennis (23 April 2018). "Tribeca Film Review: 'To Dust'". Variety. Retrieved 25 August 2018. "To Dust (2018)". Rotten ...
"Left In The Dust". Xbox Nation (18): 49. September 2004. Van Autrijve, Rainier (December 14, 2004). "Phantom Dust Coming To ... leaving the empty Dust-filled planet. Edgar found he was able to control the dust to a point where he could create self-aware ... had created a dust-clone of himself to continue to recreate humanity from the dust. The clone was flawed with overly ... while Yukio Futatsugi stated Phantom Dust as his favorite directed video game of all time. At E3 2014, a Phantom Dust remake ...
  • The fine sediments from these features, as well as from the Tigris and Euphrates floodplains, can feed dust storms. (
  • As clay and silt particles are much smaller than sand grains, they can be lofted into the air by lighter winds and may occur more frequently in dust storms. (
  • Forecasting Dust Storms. (
  • Also, there are dust-dwelling fungi which may cause a disease called Valley fever that happens in Arizona and California and has been related to dust storms in those regions. (
  • Dust storms known as black blizzards are raging, threatening lives and destroying cropland. (
  • Researchers anticipate that the unprecedented combination of a near-equatorial weather station at ground level, and daily orbital observations during Mars' dust-storm season, may provide information about why some dust storms grow larger than others. (
  • For instance, Saharan dust storms are thought to be one important source of phosphorus for plants in the Amazon rainforest. (
  • A nearby naval base documented emphysema and chronic bronchitis during Owens Lake dust storms and hospitalizations due to lung spasms. (
  • Longtime residents of the surrounding communities of Lone Pine, Keeler and the Paiute-Shoshone Reservation told reporters with the Great Salt Lake Collaborative last year the dust storms were so bad, they blotted out the sun and resembled wildfire smoke. (
  • The south-eastern Mediterranean region is affected by frequent and often severe desert dust storms (DDS) lasting several days. (
  • Loaders, applicators and other handlers must wear long-sleeve shirt and long pants, chemical-resistant gloves, shoes plus socks, chemical-resistant apron, and a NIOSH-approved dust/mist respirator, with MSHA/NIOSH approval number prefix TC21C or a NIOSH-approved respirator with any N, R, P, or HE filter. (
  • The dust is made up of particles that can be blown for thousands of miles. (
  • Larger particles from Saharan dust can irritate the skin and eyes. (
  • Smaller particles from Saharan dust can be inhaled and cause respiratory disorders and cardiovascular events. (
  • A vacuum cleaner is a device for collecting dust and other small particles of dirt. (
  • All vacuums use a fan to create a flow of air that passes over a filter, trapping dust particles. (
  • Dust is made of fine particles of solid matter. (
  • Road dust consists of deposits of vehicle and industrial exhaust gas, particles from tire and brake wear, dust from paved roads or potholes, and dust from construction sites. (
  • The researchers were not surprised to learn that dust in the Sierra Nevada was a mixture of soil particles from as far away as China's Gobi Desert and as near as California's San Joaquin Valley. (
  • Dust particles are what we call particulate matter, and we know that breathing in fine particles of anything is not good for the respiratory tract - especially people who are sensitive to poor air quality," said Thomas Gill, a professor of geological sciences at the University of Texas at El Paso. (
  • Due to more sunlight being scattered by the dust particles, there will likely be more vibrant sunsets and sunrises of the orange and red side of the visible light spectrum," Wally said. (
  • The thickness of dust particles in the atmosphere is the highest observed in 25 years of satellite measurements. (
  • The dust particles themselves can also have a big effect, according to Timothy Logan, an expert on aerosol and clouds at Texas A&M University. (
  • Dust particles are also less effective than other kinds of aerosols at helping clouds to form in the atmosphere, he added. (
  • People who live in the Research Triangle Park area of North Carolina who have a child between 5 and 15 years old with a dust mite allergy or sensitivity may be eligible for this study. (
  • The inflammation, itchiness, and dry skin of a dust mite allergy is initially triggered by dust mite proteins breaking-down layers of skin. (
  • Dust plumes blew eastward off a long stretch of Argentine coast on March 28, 2009. (
  • Dust plumes arose from multiple source points to produce a large, opaque plume over the Atlantic Ocean on March 28, 2009. (
  • Source points for this storm aren't obvious in this image, but the vast sand seas of the Arabian Peninsula provide plentiful material for dust plumes. (
  • The arrival of the Saharan dust cloud is not unusual and happens a few times year, said Wally, who added the plumes are usually short-lived, lasting no more than a week. (
  • In general, Saharan dust plumes actually happen all the time - the Sahara Desert has an endless supply of dust for winds to carry across the Atlantic Ocean. (
  • Saharan dust plumes can have a strong, if temporary, effect on local air quality. (
  • But otherwise, dust plumes are thought to prevent new hurricanes from forming in the ocean as they move over the water. (
  • It's not the only way dust plumes can affect their surroundings. (
  • This airborne dust is considered an aerosol and once in the atmosphere, it can produce strong local radiative forcing. (
  • Pu said hotter, drier weather and reduced vegetation in Africa could produce more airborne dust. (
  • When you know that dust mites are among the causes of your child's allergic symptoms, you may want to reach for the vacuum cleaner every time you spy a trace of dust on the furniture. (
  • Dust mites are among the most common causes of asthma. (
  • In fact, air cleaners do not significantly reduce mite exposure and should not be recommended for dust mite control. (
  • The study shows that exposure to dust mites might make your skin more permeable to other allergens as well - such those from cats, dogs or mould," says Jill Warner, an expert on allergy and immunity at the University of Southampton in the UK. (
  • It might therefore be possible to reduce the chances of developing other allergies later in life, if exposure to dust mites can be reduced, says Warner. (
  • The overall goal of this program is to foster multidisciplinary studies which integrate molecular, cellular, animal and human approaches to determine the role of workplace exposure to mixed dusts on the initiation of obstructive lung disease and the enhancement of susceptibility to pulmonary infection. (
  • At present, knowledge concerning the potential adverse pulmonary effects of exposure to mixed dusts is limited. (
  • Researchers parsing the mechanism that in June 2020 transported a massive dust plume from Saharan Africa to the Caribbean and U.S. Gulf Coast. (
  • For two weeks in June 2020, a massive dust plume from Saharan Africa crept westward across the Atlantic, blanketing the Caribbean and Gulf Coast states in the U.S. The dust storm was so strong, it earned the nickname "Godzilla. (
  • Worse, the dust plume from Africa had the potential to cause health problems for people in the Americas. (
  • A sizable plume of Saharan dust is making a 5,000-mile trek to America and will blanket Georgia and the Southeast. (
  • Experts say the huge collection of dust, nicknamed the Godzilla dust plume, could be the most massive, intense Saharan plume in more than 50 years, according to an NBC News report . (
  • The dust plume could potentially reach Georgia, Louisiana, Alabama, Florida, Texas and the Carolinas this weekend, according to the National Weather Service. (
  • The dust plume, traveling at altitudes between 20,000 and 30,000 feet in the Southeast, will bring enhanced sunrises and potentially suppress storm formation, which will make for a beautiful view with the dust, National Weather Service meteorologist David Wally told The New York Times . (
  • In two affiliated projects at NIOZ and another one at partner institute MARUM-Bremen we are studying Saharan dust by collecting it with instruments that we placed underneath the dust plume. (
  • Saharan dust plume, seen by the NOAA-20 satellite on June 17, 2020. (
  • The dust mite eats and excretes pellets of feces that are about the size of pollen grains, and finds other dust mites, with which it produces many offspring. (
  • the symptoms of hay fever (allergy to pollen, dust , or other substances in the air) and allergy to other substances (such as dust mites, animal dander, cockroaches, and molds). (
  • Saharan dust is a type of particulate matter (PM) that originates in the Sahara Desert in Northern Africa. (
  • Where does Saharan dust come from? (
  • Saharan dust comes from the Sahara Desert in Northern Africa. (
  • Saharan dust transported to the United States usually peaks from late June through mid-August. (
  • Saharan dust can be harmful to your health. (
  • Saharan dust worsens air quality and increases the levels of particulate matter in the air. (
  • How can Saharan dust affect my health? (
  • Saharan dust can affect anyone. (
  • If you have asthma, Saharan dust can make your symptoms worse. (
  • How can I protect myself and my family from Saharan dust? (
  • The good news is there's a lot you can do to protect yourself and your family from the health effects caused by Saharan dust. (
  • Saharan dust affects air quality, so start by learning about the U.S. Air Quality Index. (
  • You can use the AQI as a tool to help you avoid Saharan dust and other particle pollution. (
  • When Saharan dust levels are high, take steps to limit the amount of air you breathe in while you're outside. (
  • Think about spending more time indoors, where Saharan dust pollution levels are usually lower. (
  • Saharan dust, in particular, can be transported and deposited as far as the Caribbean and the Amazon basin, and may affect air temperatures, cause ocean cooling, and alter rainfall amounts. (
  • From 9 - 12 October two NIOZ colleagues boarded the Italian tug Lione to recover, service and re-deploy the Mediterranean sediment-trap mooring that is part of a unique time series of Saharan dust collection since the late 1980's. (
  • In March 2023, an international group of dusty scientists will board RV Pelagia for an expedition around the Cape Verde Islands to study Saharan-dust deposition and its effects on the marine environment. (
  • It is an extremely unusual event,' said Joseph Prospero, an atmospheric scientist at the University of Miami, whose research team helped pioneer the study of Saharan dust clouds more than 30 years ago. (
  • shield the rest of the eye from germs, dust , and other harmful matter. (
  • Toward this goal, this Request for Applications (RFA) encourages scientific investigation to determine the harmful components of mixed dusts which contribute to adverse pulmonary reactions and to elucidate mechanisms in which pulmonary morbidity is initiated. (
  • Or to avoid stirring up dust, invest in a vacuum cleaner with a high-efficiency particulate air (HEPA) filter . (
  • Previous studies in mice have found that house dust extracts can promote asthma-like responses to inhaled proteins that normally wouldn't trigger allergic reactions. (
  • Dust mite allergens come from dust mites - microscopic spider-like animals that feed on house dust. (
  • Some people are allergic to dust mite allergens and may develop asthma from living near them. (
  • Participants are given materials on how to reduce dust mite allergens in their home. (
  • The dust samples are analyzed in the laboratory for dust mite allergens and the results are given to the participants at the end of the study. (
  • Dust mites are the main source of allergens in house dust. (
  • Their fecal pellets enter the general household dust to become the main source of allergens. (
  • The results suggest that flagellin, through TLR5, may prime the immune system to react to allergens in house dust. (
  • All of these data suggest that flagellin in common house dust can promote allergic asthma by priming allergic responses to common indoor allergens," says co-author Dr. Darryl Zeldin of NIEHS. (
  • Faeces deposited on our skin by dust mites may make our skin more permeable to different kinds of allergens and irritants, according to a new study in mice. (
  • Further, according to Pu, the cooperation of jet systems needed to transport the dust across the ocean is even less predictable. (
  • If a dust cloud happens to run into a hurricane that's already fully formed, the hurricane may actually help transport the dust across the ocean, Logan noted. (
  • Coal dust is responsible for the respiratory disease known as pneumoconiosis, including coal worker's pneumoconiosis disease that occurs among coal miners. (
  • The danger of coal dust resulted in environmental law regulating workplace air quality in some jurisdictions. (
  • In addition, if enough coal dust is dispersed within the air in a given area, in very rare circumstances, it can cause a dust explosion. (
  • This bulletin traces the growth in the belief in the explosibility of coal dust, summarizes the experiments and mine investigations that have established this belief, and gives the present (1911) status of preventive measures. (
  • Coal dust explosions in underground coal mines are prevented by generous application of rock dust (usually limestone). (
  • If an explosion should occur, the rock dust disperses, mixes with the coal dust and prevents flame propagation by acting as a thermal inhibitor or heat sink. (
  • To investigate this process in more detail, a number of explosion experiments using various coal dust and limestone rock dust mixes have been carried out at the Lake Lynn Experimental Mine (LLEM). (
  • These dust samples have been analyzed in the laboratory using thermogravimetric analysis (TGA) and solubility to determine how the limestone rock dust behaved during the coal dust / rock dust explosions. (
  • The preliminary results are reported in this paper and indicate that the chemistry of limestone plays an important role in its capacity to inhibit coal dust explosions. (
  • Plus, the QuadClean Multi-Surface brushroll tackles four cleaning targets: fine dust, pet hair, large debris, and dust along edges. (
  • Return it to its base, and it charges and empties automatically, sealing in up to 30 days worth of dust & debris, so you can forget about emptying for up to a month, and leave behind the trips to the trash can after every use. (
  • Dust carries fungi and bacteria that help decompose organic debris and enrich the soil. (
  • Dust pans are used with brooms and dusting or handheld brushes to sweep in and pick up dirt and debris for disposal without getting hands dirty. (
  • Handheld dust pans are used in combination with brooms and handheld brushes to push dirt and debris into the pan. (
  • Long-handled dust pans stay upright while scooping up dirt and debris. (
  • Long-handled dust pans with self-closing lids make it easy to sweep up dirt and debris, carry it, and empty without spilling. (
  • The foot traffic of the festival's 80,000 attendees is also known to kick up dust and debris, and the crowd's departure -- or what festival goers call the "exodus" -- contributed to dusty conditions amid temperatures soaring into the triple digits . (
  • They thought that evenly mixed Asian and local dust would have the greatest diversity of bacteria and fungi on board. (
  • The researchers suspect microbes steadily fell out of the dust as they traveled, which may be why fewer types of bacteria and fungi were found at the top than at the base of the mountains. (
  • The dust can travel around the globe to parts of Europe, South America, Central America, the Caribbean, and the United States. (
  • In addition to understanding the emission process in the dust-source regions, we also need to look at circulation variations that help us better project this long-range transport of dust as well as its environmental and climate impacts in the U.S. Other regions can be affected as well because African dust can be transported to South America and also Europe and the Mediterranean region. (
  • Even if you have enhanced or decreased emission, if there aren't favorable conditions for dust to be transported, then its impact on this downwind region will be harder to quantify," she said. (
  • The researchers tested house dust extracts for flagellin and detected significant amounts of the protein. (
  • One week later, the mice that had been exposed to the dust mite enzyme had skin patches that were more dehydrated and that soaked up more riboflavin, the researchers found. (
  • Now, researchers from the University of Kansas have published a new study in the Bulletin of the American Meteorological Society parsing the mechanism that transported the dust. (
  • Combining the satellite data with readings from air quality stations, the researchers used computers to analyze how the dust was handed off between jet-stream systems to reach the Caribbean and U.S., where it disrupted transportation and had the potential to change weather. (
  • The dust ring stretches about 137 million miles (220 million kilometers) from end to end, though it's just 10 percent denser than the background cloud that pervades interplanetary space and produces the glow known as zodiacal light , researchers said. (
  • Further study of the dust rings near Venus and Earth could also aid researchers peering beyond our solar system, he added. (
  • Use of a normally efficient vacuum cleaner stirs up clouds of fine dust that can hang about in the air for up to 8 hours and make sneezing, runny nose, and itchiness worse. (
  • In the days after June's video was published, the Burning Man organizers warned of dust clouds so thick that cars were getting lost in " whiteout conditions " right before the main event, where an effigy made of wood is burned at the center of the complex. (
  • As "The Man" burned that evening, the National Weather Service station in Reno, Nevada, tweeted a map of massive dust clouds stretching across the desert and over the festival area. (
  • There's some debate among scientists about whether these traveling dust clouds might be affected by future climate change. (
  • Dust in the atmosphere is produced by saltation and abrasive sandblasting of sand-sized grains, and it is transported through the troposphere. (
  • Although a breathtaking sight, every year heaps of their dying ashes-tiny dust grains known as micrometeorites-litter our planet. (
  • Atmospheric or wind-borne fugitive dust, also known as aeolian dust, comes from arid and dry regions where high velocity winds are able to remove mostly silt-sized material, deflating susceptible surfaces. (
  • African dust darkened the skies of the Caribbean and American Gulf States thanks to a trio of atmospheric patterns, according to the study. (
  • Pu and co-author Qinjian Jin, lecturer and academic program associate with KU's Department of Geography & Atmospheric Science, used satellite datasets to reconstruct the patterns that transported the dust from Africa to the Americas. (
  • An updated (Monday June 22nd) computer model forecast of atmospheric dust for the next 10 days. (
  • Dust pollution is the first problem to emerge from a desiccated terminal lake, said Kevin Perry, an atmospheric scientist at the University of Utah, and will be the last to be solved. (
  • Dust kicked up by vehicles traveling on roads may make up 33% of air pollution. (
  • Even if you're young and healthy, studies show dust pollution can have long-term consequences. (
  • It became the largest source of human-caused dust pollution in the nation. (
  • Globally, research has linked dust pollution from desiccated lakes like the Aral Sea to sickness from allergies, fungal infections, asthma, diarrhea and cancer. (
  • Dust pollution causes visibility issues that put vehicle drivers and airplane passengers at risk as well. (
  • Now, spring and summer are becoming the most unhealthy time of year, between ozone pollution, wildfire smoke, dust and a warming climate that's exacerbating all those pollution sources. (
  • The African easterly jet exports the dust from Africa towards the Atlantic region. (
  • There are some observations showing there is reduced precipitation in West Africa over the 20th century, which indicate drying there would have more dust emissions," she said. (
  • Satellite images from earlier this week showed the thick dust as a brown mass moving off the west coast of Africa, crawling across the Atlantic and then drifting over the eastern Caribbean. (
  • Autonomous dust-collecting buoy Carmen has escaped from her mooring line with which she was tethered to the sea floor off Cape Blanc, Mauritania, northwest Africa. (
  • your asthma or allergies become worse due to dust , you are said to have a dust allergy. (
  • The onset of the dust cloud could cause respiratory issues for some and make it quite difficult to see for others. (
  • This study will determine whether use of an in-home test kit results in decreased dust mite allergen levels in homes of children who are sensitive or allergic to dust mites. (
  • Study staff visit participants' homes three times over a 12-month period to ask questions about the home, home cleaning habits, and participants' experiences with home test kits (see below) for measuring dust mite allergen. (
  • Recently, initiatives such as Project-Dust have been established to directly study dust in the Middle East. (
  • A new study by a team of Turkish and Australian astronomers has found evidence of grease-like molecules in interstellar dust. (
  • A new study from the University of Edinburgh suggests that life could be distributed throughout the cosmos by interstellar dust. (
  • image: Elevation and forest types of sites selected for the Sierra dust study. (
  • Without dust, trees wouldn't have what they need to flourish and fix carbon from the atmosphere at the level they're currently doing it," said UCR environmental microbiologist and study co-author Emma Aronson. (
  • There's also a study finding that the dust storm has been associated with increased nonaccidental and cardiovascular mortality in the United States. (
  • It's really helping us better understand what's hitting us," says Larry Nittler , a cosmochemist who studies meteorites and space dust at the Carnegie Science Institute, who was not involved in the study. (
  • To help decrease the amount of dust mites encase mattresses, box springs, and pillows with mite-proof covers. (
  • We love it, and it has made a huge difference in the amount of dust in our house. (
  • The lighter amount of dust was slated to move into the Gulf Coast on Thursday, with the denser concentration of dust coming to fruition this weekend. (
  • My scanner has become intermittent in the manner discussed some time back in this forum and I suspect it is dust on the filmholder detection sensor. (
  • Some dust traveling the globe and landing in the Sierra Nevada is natural, and even beneficial for mountain ecosystems. (
  • As dust sprinkles out of the air, these nutrients may help fuel local ecosystems. (
  • On the long trip back from the camps to Tehran, Arne noticed that his boots were covered with the ubiquitous dust, and he started to clean them. (
  • House dust mites (HDM) are ubiquitous arachnids that ingest shed human epithelium and reside in bedding and upholstered furniture. (
  • More work will be required to confirm our conclusions, but it's possible that cleaning can reduce the amount of house dust in general, and flagellated bacteria in particular, to reduce the incidence of allergic asthma," Cook says. (
  • In early May 2012, a dust storm blew over the Middle East, particularly east of Damascus. (
  • Acquired September 28, 2011, this image shows the southern end of a dust storm stretching hundreds of kilometers over the Middle East. (
  • Acquired January 8, 2013, this image shows a dust storm over Iraq and neighboring countries. (
  • Footage recorded by Robert June shows a fellow attendee walking toward the cyclone, and June said he also walked through the storm, not expecting the wind and dust to be very strong. (
  • A regional dust storm visible in the southern hemisphere of Mars in this nearly global mosaic of observations made by the Mars Color Imager on NASA's Mars Reconnaissance Orbiter on Nov. 25, 2012, has contracted from its size a week earlier. (
  • Good news for the spacecraft sitting on or orbiting Mars: a dust storm on the Red Planet that looked as though it could spread around the entire planet now appears to be abating rather than going global, NASA says. (
  • Part of gigantic panorama from Curiosity, showing an increasingly hazy view off in the distance, likely because of a dust storm. (
  • Vulnerable patients, like the elderly and those with existing respiratory issues, may notice impacts from a dust storm right away. (
  • The south-eastern Mediterranean experiences frequent desert dust storm events (DDS) that have been shown to be associated with adverse health effects. (
  • Hi, I normally hang out on the colorectal cancer board, but my cancer has spread to my lungs, so I wanted to share what I found out about cat litters, because I decided to find the best litter to avoid inhaling the dust that all the popular clay clumping litters can cause. (
  • United States federal law requires that construction sites obtain planning permissions to conduct earth moving and clearing of areas, so that plans to control dust emissions while the work is being carried out are specified. (
  • Some papers find that there would be decreased dust emissions. (
  • A diagram showing the viewing angle that allowed NASA's STEREO-A probe to detect a giant dust ring near the orbit of Venus. (
  • Acquired on April 19, 2012, this natural-color image shows thick dust over northwestern Iraq. (
  • It still had a little dust, which we didn't like, and the cats didn't seem to like it, but they used it after we sprinkled some of their old brand on top. (
  • does anyone know if there is still a source for the little dust brush Polaroid designed for their 4000 series scanners, or is there somewhere I can see what it looked like so I might be able to fashion one? (
  • Every year, numerous of such dust events take place and in total about 180 Million Tons of so-called mineral dust are blown out from the northwest African deserts (including Sahara and Sahel) westward across the Atlantic Ocean. (
  • A bacterial protein in common house dust may worsen allergies that could lead to asthma, according to a new report. (
  • A research team led by Dr. Donald Cook of NIH's National Institute of Environmental Health Sciences (NIEHS) set out to explore whether microbial products in house dust might trigger these asthma-like responses. (
  • They found that both flagellin and house dust extracts primed weaker allergic airway responses in these mice than in mice that had the gene for TLR5. (
  • But all the activity on Earth generates plenty of dust, too, making the measurement of just space dust pretty difficult. (
  • The Great Salt Lake now generates around 15 dust events a year, possibly more, experts say. (
  • Such amounts of dust deposited over such a big area are likely to have an impact. (
  • Most governmental Environmental Protection Agencies, including the United States Environmental Protection Agency (EPA) mandate that facilities that generate fugitive dust, minimize or mitigate the production of dust in their operation. (
  • There are also helpful microbes in the dust that enable plants to absorb nutrients like phosphorus that are needed for growth. (
  • Dust contains a variety of minerals and nutrients, such as iron and phosphorus. (
  • However, avoiding house dust mite allergies is a very difficult thing to do. (
  • Road dust is a significant contributor to the generation and release of particulates into the atmosphere. (
  • Desert dust transported over large distances through the atmosphere with the offshore trade winds is a potential fertilizer of the ocean. (
  • The history of Dust began in Milano in 1998 when three young university students created a band called Green Onions: they were Alessandro (singer), Gian Paolo (guitarist) and Max (drummer). (
  • At each visit, staff collect dust samples from the child's bedroom, the parents' bedroom, and the living room. (
  • To determine how plentiful grease-like molecules are compared to aromatic ones, the team created material with the same properties as interstellar dust in a laboratory. (
  • Our solar system is home to what's called the zodiacal cloud -a shroud of cosmic dust suffused between the inner planets. (
  • A strange place, but excellent for looking for ancient extraterrestrial dust, which could reveal clues about the early formation of the solar system. (
  • Scientists have found a huge, diffuse ring of dust near the orbit of Venus, marking the second time such a structure has been discovered in our solar system. (
  • The lifetime of dust trapped in the ring is only about 100,000 years, so it does not provide much of a clue to the formation of the solar system," Jones said. (
  • Thunderstorms and cyclones can produce high-speed winds that lift the dust and transport it thousands of miles through the air. (
  • When strong, high winds are present, they can carry the floating dust straight to the coast. (
  • There, the dust cloud often encounters a system of westward-moving trade winds. (
  • Road dust may be suppressed by mechanical methods like street sweeper, vehicles equipped with vacuum cleaners, vegetable oil sprays, or with water sprayers. (
  • You'd have to use a vacuum to get the dust in the top, wouldn't you? (
  • Dust is a common trigger. (
  • Dust can aggravate the bowels and trigger autoimmune diseases, Blagev said. (
  • I looked up multiple vet and vet university sites online and they all agreed- cat litter dust is listed in the top three airway irritants for cats and that clumping litter is the worst kind. (
  • An enormous dust cloud has finally hit the United States, after journeying 5,000 miles from the Sahara Desert across the Atlantic Ocean. (

No images available that match "dust"