Cosmic Dust
Air Pollutants, Occupational
Pyroglyphidae
Mites
Occupational Exposure
Quartz
Pneumoconiosis
Wood
Inhalation Exposure
Byssinosis
Silicon Dioxide
Environmental Monitoring
Allergens
Textile Industry
Mining
Coal
Dermatophagoides pteronyssinus
Arthropod Proteins
Air Microbiology
Silicosis
Agricultural Workers' Diseases
Environmental Exposure
Industry
Interior Design and Furnishings
Gossypium
Threshold Limit Values
Maximum Allowable Concentration
Endotoxins
Respiration Disorders
Ventilation
Textiles
Respiratory Tract Diseases
Air Pollutants
Meteoroids
Asbestos
Metallurgy
Asthma
Asbestos, Serpentine
Respiratory Protective Devices
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.
Dust
Dust Mohammad
Dust storm
Dust off
Dust (character)
Dust-Off
Dust (disambiguation)
Dust II
Dust mask
From Dust
Neural dust
Fugitive dust
Dust lane
Sunshine Dust
Gharib Dust
Dust astronomy
Dust (ballet)
Poison Dust
Angel dust
Dust pneumonia
Dust Vand
Dust Breeding
Dust Waltz
Diamond dust
Silver Dust
Devils & Dust
Dust 8
Dust Brothers
To Dust
Phantom Dust
Saharan Dust
Allergies, asthma, and dust: MedlinePlus Medical Encyclopedia
Pink Dust
Cosmic dust - Wikipedia
Dust near Cyprus
Dust Plumes off Western Africa
God's Glory...Man's is Dust
ATSDR - Soil-Pica Report - 3.1 Incidental Influences on Total Soil Dust Ingestion: Dr. Natalie Freeman
Dust - Wikipedia
NIOSH Alert: Req. for Assist. in Preventing Organic Dust Toxic Syndr
A history of African dust | EurekAlert!
Dust Mite Allergy | AAFA.org
Second Avenue Subway causes a dust storm
Have bite-mark forensics bitten the dust? | New Scientist
Dust Management | DEWALT
Stardust Mission Succeeds in Returning Comet Dust | Space
Out of the Dust by Karen Hesse | LibraryThing
DEWALT - Dust Collectors - Woodworking Tools - The Home Depot
Thorndike | When the Sky Rained Dust
Kavez - Left in the Dust [WIP]
UKC Logbook - 'Angel Dust'
Smart Dust
Houston, TX Dust and Dander Allergen Forecast | AccuWeather
Desert Dust Feeds Amazon Forests | Science Mission Directorate
Natural remedies or supplements for dust allergy? : Allergies
LIGO Sensitivity and Cosmic Dust -- QED Radiations | PRLog
Particles37
- The dust is made up of particles that can be blown for thousands of miles. (cdc.gov)
- Larger particles from Saharan dust can irritate the skin and eyes. (cdc.gov)
- Smaller particles from Saharan dust can be inhaled and cause respiratory disorders and cardiovascular events. (cdc.gov)
- House dust may also contain tiny particles of pollen, mold, fibers from clothing and fabrics, and detergents. (medlineplus.gov)
- Dust particles collect in fabrics and carpets. (medlineplus.gov)
- [1] [2] Most cosmic dust particles measure between a few molecules and 0.1 mm (100 Ī¼m ), such as micrometeoroids . (wikipedia.org)
- When infrared astronomy began, the dust particles were observed to be significant and vital components of astrophysical processes. (wikipedia.org)
- Cosmic dust can be detected by remote sensing methods that utilize the radiative properties of cosmic dust particles, c.f. (wikipedia.org)
- Dust is made of fine particles of solid matter. (wikipedia.org)
- 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. (wikipedia.org)
- Extreme daytime heating of the Sahara creates instability in the lowest layer of the atmosphere, lofting dust particles into the air. (nasa.gov)
- Scientists confirmed today that the Stardust sample return capsule that parachuted to Earth last weekend achieved a mission goal of catching comet and interstellar dust particles. (space.com)
- Both interstellar dust and comet particles were captured in aerogel, a material that is as much as 99.9 percent empty space, thus greatly reducing the stress of impact on the particles. (space.com)
- Scientists will search the aerogel grid for dust samples, with more than 65,000 people having signed up to help in a project called Stardust@home in which home computers can be used to examine images of tiny sections of the aerogel grid to look for interstellar dust particles. (space.com)
- Smart dust particles, called "motes," could be as small as the size of a grain of sand. (networkworld.com)
- Today, smart dust particles are down to 1 millimeter cubed and can contain sensors, computing circuits, bidirectional wireless communications technology and a power supply. (networkworld.com)
- Very soon, smart dust particles easily could be able to detect people and their locations. (networkworld.com)
- It wouldn't be too difficult to imagine releasing smart dust particles that would land on people's hair and transmit back the DNA and location of everyone they find. (networkworld.com)
- The new system uses electrostatic repulsion to zap dust particles off the surface of solar panels. (popsci.com)
- While dust by itself is not a conductor, they found that applying an electric force or adequate voltage range through an electrode-such as a metal bar-that passes right above the solar panel's surface charges the dust particles resting on the panel. (popsci.com)
- Next, an opposite charge is applied to a transparent film-similar to the ones used on phones and laptops-which is then installed on the system, allowing the glass surface of the panel to repel pesky dust particles. (popsci.com)
- They began by conducting experiments with different sizes of dust particles and discovered that the silica in dust particles absorbs moisture from the atmosphere. (popsci.com)
- A charge on the dust particles comes from a thin layer of absorbed water that is only a few nanometers thick but still acts as a conductor. (popsci.com)
- That enabled us to estimate the electric force of dust particles and remove dust particles between the sizes of 30 to 40 microns," says Varanasi. (popsci.com)
- Another factor in its appearance is the size and shape of moon dust particles, the small rock grains that cover the moon's surface. (nist.gov)
- Researchers at the National Institute of Standards and Technology (NIST) are now measuring tinier moon dust particles than ever before, a step toward more precisely explaining the Moon's apparent color and brightness. (nist.gov)
- NIST researchers and collaborators have developed a complex method of measuring the exact three-dimensional shape of 25 particles of moon dust collected during the Apollo 11 mission in 1969. (nist.gov)
- The results indicated that the color of light absorbed by a moon dust particle is highly sensitive to its shape and can be significantly different from that of spherical or ellipsoidal particles of the same size. (nist.gov)
- Combustible dusts are solids finely ground into fine particles, fibers, chips, chunks or flakes that can cause a fire or explosion when suspended in air under certain conditions. (industryweek.com)
- Dust storms carrying tiny particles of minerals from Africa, such as that which hit Israel on Wednesday night, are now arriving throughout the year, and not just during the spring and summer. (jpost.com)
- Prof. Joachim Joseph, professor emeritus at Tel Aviv University's department of geophysics and planetary science, told The Jerusalem Post in an interview Thursday that such dust, which settled throughout Israel and was washed out Thursday by the rains, can come from Egypt, the Sahara Desert and even Saudi Arabia, depending on the location of the high winds that lift the dust particles skyward. (jpost.com)
- It is not sand, which is too heavy to be carried by winds, but smaller dust particles, which are created by erosion of rocks. (jpost.com)
- While the dust that flew into Israel can irritate the lungs and airways of young children and people with respiratory disorders such as asthma, the particles usually do not cause serious harm. (jpost.com)
- Desertification, in which arable land loses rich topsoil because trees are cut down for development, and global warming, in which pollution causes the atmosphere to heat up and water to be lost from the soil, spur the formation of dust particles and their travel thousands of kilometers away. (jpost.com)
- HPAI viruses disperse in aerosols, in fomites carried by human and animal vectors, and via feathers, fecal particles, and to a great extent, dust ( 7 - 9 ). (cdc.gov)
- Poultry farms are known to heavily generate dust particles that spread from feed, litter, feces, and animal skin and feathers ( 9 , 10 ). (cdc.gov)
- Larger or more coarse particles, including dust and pollen are more restricted to the thoracic cavity and unable to penetrate the smaller airway systems. (who.int)
Storms18
- He and dozens of others registered their complaints about the prairie-style dust storms and noxious stench with MTA and city officials Wednesday at a meeting of Community Board 8. (nypost.com)
- To make matters worse, dust storms are devastating the family farm and all the farms nearby. (librarything.com)
- Dust storms known as black blizzards are raging, threatening lives and destroying cropland. (gale.com)
- Dust storms are a common sight in the Southwest during the monsoon, but some dust storms are bigger than others. (abcactionnews.com)
- Not all dust storms are created equal. (abcactionnews.com)
- Dust storms are a common sight during the Southwest United States' monsoon. (abcactionnews.com)
- As climate change intensifies dust storms , there may be a rapid loss of solar panels' efficiency unless they are cleaned several times a month . (popsci.com)
- The rover is currently hunkered down in Mars's Perseverance Valley, trying to wait out one of the most intense dust storms ever observed on the red planet. (nationalgeographic.com)
- Forecasting Dust Storms v2. (howstuffworks.com)
- Vicki M. Giuggio "How Dust Storms Work" 1 January 1970. (howstuffworks.com)
- Between late May and early June, several different irregular and spiral-shaped dust storms were seen to be forming at the north polar ice cap on Mars. (dlr.de)
- ESA's Mars Express spacecraft has been observing local and regional dust storms forming at the north pole of the Red Planet over the last month, and watching as they disperse towards the equator. (dlr.de)
- Joseph said that, although the data from one main experiment was completely lost, that which survived provided important information on the course of dust storms from Africa to the Middle East. (jpost.com)
- The Mitigating the Health Effects of Desert Dust Storms Using Exposure-Reduction Approaches clinical randomised intervention study in adults with AF is funded by EU LIFE +programme to evaluate the efficacy of recommendations aiming to reduce exposure to desert dust and related heart arrhythmia effects. (bvsalud.org)
- It will use agent-based models to simulate possible solutions to control and/or reduce dust-storms in the Middle East (ME) considering the impacts of proposed solutions from social, political, economic, and environmental perspectives. (lu.se)
- The Middle East, which is experiencing severe environmental challenges such as dust-storms, is most vulnerable to climate and human-induced environmental changes. (lu.se)
- Iran and Turkey's dam projects, on the frequency/intensity of dust-storms by investigating the spatiotemporal dust-storm dataset. (lu.se)
- Providing strategies to control and/or decrease dust-storms in the region by analyzing social- political-economic and environmental impacts of possible solutions to achieve sustainability and resilience. (lu.se)
Saharan23
- Saharan dust is a type of particulate matter (PM) that originates in the Sahara Desert in Northern Africa. (cdc.gov)
- Where does Saharan dust come from? (cdc.gov)
- Saharan dust comes from the Sahara Desert in Northern Africa. (cdc.gov)
- Saharan dust transported to the United States usually peaks from late June through mid-August. (cdc.gov)
- Saharan dust can be harmful to your health. (cdc.gov)
- Saharan dust worsens air quality and increases the levels of particulate matter in the air. (cdc.gov)
- How can Saharan dust affect my health? (cdc.gov)
- Saharan dust can affect anyone. (cdc.gov)
- If you have asthma, Saharan dust can make your symptoms worse. (cdc.gov)
- How can I protect myself and my family from Saharan dust? (cdc.gov)
- 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. (cdc.gov)
- Saharan dust affects air quality, so start by learning about the U.S. Air Quality Index. (cdc.gov)
- You can use the AQI as a tool to help you avoid Saharan dust and other particle pollution. (cdc.gov)
- When Saharan dust levels are high, take steps to limit the amount of air you breathe in while you're outside. (cdc.gov)
- Think about spending more time indoors, where Saharan dust pollution levels are usually lower. (cdc.gov)
- 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. (wikipedia.org)
- Saharan dust crossed the Atlantic Ocean on June 24, 2009. (nasa.gov)
- Saharan dust often travels across the Atlantic thanks to a hot, dry, dusty layer of air known as the Saharan Air Layer. (nasa.gov)
- Saharan dust crossed the Atlantic Ocean on June 24, 2009, visible in two separate overpasses of the Aqua satellite. (nasa.gov)
- Vertical and areal distribution of Saharan dust over the Western Equatorial North Atlantic Ocean. (nasa.gov)
- The study, titled "The Discovery of African Dust Transport to the Western Hemisphere and the Saharan Air Layer," was published in Bulletin of the American Meteorological Society . (eurekalert.org)
- Every year, intense Saharan winds send enormous clouds of dust on a trans-Atlantic journey to the Amazon basin. (nasa.gov)
- Saharan dust : mobilization, transport, deposition, papers and recommendations from a workshop held in Gothenburg, Sweden, 25-28 April 1977 / edited by Christer Morales. (who.int)
Allergens3
- Use furniture polish to help reduce dust and other allergens. (medlineplus.gov)
- Both the body parts and the waste of dust mites are allergens for many people. (aafa.org)
- Dust mite bodies and fecal pellets are the major source of allergens in house dust. (medscape.com)
Extraterrestrial dust3
- Cosmic dust - also called extraterrestrial dust , space dust , or star dust - is dust that occurs in outer space or has fallen onto Earth . (wikipedia.org)
- A strange place, but excellent for looking for ancient extraterrestrial dust, which could reveal clues about the early formation of the solar system. (popsci.com)
- Our hypothesis is that the large amounts of extraterrestrial dust over a timeframe of at least two million years played an important role in changing the climate on Earth, contributing to cooling," says Heck. (eurekalert.org)
Grains8
- Thousands of tons of cosmic dust are estimated to reach Earth's surface every year, [4] with most grains having a mass between 10 ā16 kg (0.1 pg) and 10 ā4 kg (0.1 g). [4] The density of the dust cloud through which the Earth is traveling is approximately 10 ā6 dust grains/m 3 . (wikipedia.org)
- physics ( solid-state , electromagnetic theory , surface physics, statistical physics , thermal physics ), fractal mathematics , surface chemistry on dust grains, meteoritics , as well as every branch of astronomy and astrophysics . (wikipedia.org)
- Dust in the atmosphere is produced by saltation and abrasive sandblasting of sand-sized grains, and it is transported through the troposphere. (wikipedia.org)
- Although a breathtaking sight, every year heaps of their dying ashes-tiny dust grains known as micrometeorites-litter our planet. (popsci.com)
- Dust grains migrating under Poynting-Robertson drag may be trapped in mean-motion resonances with planets. (lu.se)
- In extrasolar systems, the exozodiacal light produced by dust grains is expected to be a major obstacle to future missions attempting to directly image terrestrial planets. (lu.se)
- The patterns made by resonantly trapped dust, however, can be used to infer the presence of planets, and the properties of those planets, if the capture and evolution of the grains can be modelled. (lu.se)
- In this work, we present a semi-analytic method for calculating the capture and evolution of dust grains in resonance, which can be orders of magnitude faster than N-body methods. (lu.se)
Solids2
- Cosmic dust contains some complex organic compounds (amorphous organic solids with a mixed aromatic - aliphatic structure) that could be created naturally, and rapidly, by stars . (wikipedia.org)
- The problem with light created in cosmic dust carrying audible sound is that NPs are compact solids lacking the compliance to allow modulation of light in the frequency range 20 - 2000 Hz. (prlog.org)
Atmospheric7
- 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. (wikipedia.org)
- In a recently published paper, a research team, led by University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science Professor Emeritus Joseph M. Prospero, chronicles the history of African dust transport, including three independent "first" discoveries of African dust in the Caribbean Basin in the 1950s and 1960s. (eurekalert.org)
- Today, Prospero, nicknamed the "father of dust," is using a system of ground stations and satellites to study the effect that the global transport from the Sahara has on the atmospheric composition above the Caribbean. (eurekalert.org)
- They are intimately connected by a 10,000 mile long intermittent atmospheric river of dust. (nasa.gov)
- We know that dust is very important in many complex ways," says Hongbin Yu, an atmospheric scientist at the University of Maryland who works at NASA's Goddard Space Flight Center in Greenbelt, Maryland. (nasa.gov)
- Thanks to CALIPSO's unprecedented 3D observations of atmospheric dust, scientists can begin to create models to predict how the dust may impact climate in the future-and how it nurtures the lush forests of South America today. (nasa.gov)
- The unique combination of this data, along with atmospheric modeling, allowed the researchers to estimate the dust devil's dimensions: 82 feet (25 meters) wide, at least 387 feet (118 meters) tall, and moving at about 12 mph (19 kph). (nasa.gov)
Cosmic dust16
- Cosmic dust was once solely an annoyance to astronomers, as it obscures objects they wished to observe. (wikipedia.org)
- [14] For example, cosmic dust can drive the mass loss when a star is nearing the end of its life , play a part in the early stages of star formation , and form planets . (wikipedia.org)
- Zodiacal light caused by cosmic dust. (wikipedia.org)
- Cosmic dust of the Andromeda Galaxy as revealed in infrared light by the Spitzer Space Telescope . (wikipedia.org)
- A wide range of methods is available to study cosmic dust. (wikipedia.org)
- Cosmic dust can also be detected directly ('in-situ') using a variety of collection methods and from a variety of collection locations. (wikipedia.org)
- Recently, an alternative to LIGO measurement of gravitational waves was proposed based on [2] that argued light produced from heating NPs of cosmic dust during black hole coalescence was modulated by audible sound produced in NP collisions with black hole debris prior to being carried by the light to Earth. (prlog.org)
- See LIGO: Einstein's gravational waves or sournd carried by light from cosmic dust? (prlog.org)
- What this means is light produced upon heating cosmic dust is modulated at GHz frequencies by the acoustic vibrations from NP collisions, but not in the audible 20 - 2000 Hz range of LIGO sensitivity. (prlog.org)
- LIGO sensitivity is proposed to be light produced in cosmic dust modulated by the dispersion of rotational speeds in the inspiral of the coalescing black holes, the spikes of narrow band noise depending on the local concentration of cosmic dust. (prlog.org)
- LIGO sensitivity is explained by light created as cosmic dust is heated during black hole coalescence and modulated in frequency f depending on its time dependent radial location R(t) in the inspiral of black hole debris, i.e., f = V/2ĻR(t), where V is a constant inspiral velocity. (prlog.org)
- Moreover, the continuum of LIGO low frequency narrow band noise spikes most likely do not depend on 60 Hz measurement noise, but rather are proportional to the local concentration of cosmic dust. (prlog.org)
- In the audible range, LIGO may be measuring a continuum of low frequency noise from cosmic dust modulated by inspiral rotational speeds having nothing to do with gravitational waves, a conclusion of which does not depend on LIGO having near impossible resolution. (prlog.org)
- Physicists did not consider NPs of cosmic dust in the intense heat of coalescing black holes produce light that travels to Earth and confuses LIGO gravitational wave measurements. (prlog.org)
- Our solar system is home to what's called the zodiacal cloud -a shroud of cosmic dust suffused between the inner planets. (popsci.com)
- They put the snow in big plastic barrels which they hauled back to base, then melted the snow and strained out the cosmic dust, making sure to remove any occasional contaminants. (popsci.com)
Storm12
- And this recent dust storm near Phoenix was so big it enveloped a city in dust and sand. (abcactionnews.com)
- Since the Mars Reconnaissance Orbiter spotted the storm on May 30, the tempest has kicked up enough dust to cover a quarter of Mars's surface. (nationalgeographic.com)
- Cantor adds that the storm will grow more severe in the next few days and probably will spawn Mars's first global dust cloud since 2007 . (nationalgeographic.com)
- This also isn't the first dust storm that Opportunity has faced: It last stared one down in 2007. (nationalgeographic.com)
- In late May 2019, a spiral-shaped dust storm at the north polar ice cap of Mars was observed by several instruments on board Mars Express. (dlr.de)
- This image was acquired with the DLR-operated HRSC stereo camera on 22 May 2019 and shows a dust storm on the edge of Mars' north polar ice cap. (dlr.de)
- The image at the top of this page, acquired by HRSC on 26 May, shows a spiral-shaped dust storm, its brown colour contrasting with the white ice of the north polar ice cap below. (dlr.de)
- TAU associate Prof. Colin Price, a colleague of Joseph, added that Wednesday's dust storm, coming in the winter, was "a bit unusual for this time. (jpost.com)
- Mediterranean countries experience frequent desert dust storm (DDS) events originating from neighbouring Sahara and Arabian deserts, which are associated with significant increase in mortality and hospital admissions, mostly from cardiovascular and respiratory diseases . (bvsalud.org)
- To consider environmental, socio-political, and economic aspects of dust-storm generation and control policy, the project involves expertise from engineering, science, and social sciences faculties of Lund University. (lu.se)
- Spatiotemporal analysis of dust-storm sources, together with dust-source vulnerability mapping to identify new potential sources. (lu.se)
- Describing driving forces of dust-storm and identifying the external environmental and socio-political key factors. (lu.se)
Exposure8
- You can do many things to limit your or your child's exposure to dust and dust mites. (medlineplus.gov)
- First, the dust loading on hands was assumed to fully replenish between mouthing events--an assumption that an observer suggested was conservative for the upper-end exposure scenario--and mouthing activity was assumed to be limited to 8 hours per day. (cdc.gov)
- The alert provides recommendations for minimizing the risk for exposure to organic dusts and for the use of respirators. (cdc.gov)
- Our PERFORM AND PROTECTā¢ solutions reduce silica dust exposure while delivering GUARANTEED TOUGHĀ® performance. (dewalt.com)
- Childhood exposure to lead dust has been linked to lasting physical and behavioral effects, and now lead dust from vehicles using leaded gasoline has been linked to instances of aggravated assault two decades after exposure, according to researchers. (sciencedaily.com)
- This period saw an increase in airborne lead dust exposure due to the use of leaded gasoline. (sciencedaily.com)
- Children are extremely sensitive to lead dust, and lead exposure has latent neuroanatomical effects that severely impact future societal behavior and welfare," says Mielke. (sciencedaily.com)
- Adults with paroxysmal AF and implanted pacemaker are recruited and randomised to three parallel groups (a) no intervention, (b) interventions to reduce outdoor exposure to desert dust , (c) interventions to reduce both outdoor and indoor exposure to particulate matter during desert dust episodes. (bvsalud.org)
Interplanetary dust3
- intergalactic dust , interstellar dust, interplanetary dust (as in the zodiacal cloud ), and circumplanetary dust (as in a planetary ring ). (wikipedia.org)
- In the Solar System , interplanetary dust causes the zodiacal light . (wikipedia.org)
- To contextualize that, in a typical year, one thousand semi trucks' worth of interplanetary dust fall to Earth. (eurekalert.org)
Mold spores1
- Dust from inside your home and the outdoors can contain pet hair and dander, mold spores, and dust mites, which can all trigger allergy symptoms. (accuweather.com)
Mite8
- What Is a Dust Mite? (aafa.org)
- A dust mite measures only about one-quarter to one-third of a millimeter . (aafa.org)
- What Are the Symptoms of Dust Mite Allergy? (aafa.org)
- How Does a Doctor Diagnose Dust Mite Allergy? (aafa.org)
- To diagnose a dust mite allergy, your doctor may give you a physical exam and discuss your symptoms. (aafa.org)
- If your doctor thinks you have a dust mite allergy, they may suggest a skin or blood test. (aafa.org)
- If you have symptoms year-round, you could have a dust mite allergy. (aafa.org)
- Using a radioimmunoassay it is possible to measure the concentration of this glycoprotein in both dust samples and mite cultures. (nature.com)
Exposures4
- Though her most recent studies have primarily examined exposures to household dust, Dr. Freeman noted that 50-70% of household dust is believed to come from outdoor soils. (cdc.gov)
- This study characterized children's exposures to soil and dust in New Jersey urban centers by sampling levels of metals contamination on kitchen floors, children's hands, food that fell on the floor, and food that children handled. (cdc.gov)
- One of the most common illnesses is organic dust toxic syndrome (ODTS), a respiratory and systemic illness that can follow exposures to heavy concentrations of organic dusts contaminated with microorganisms. (cdc.gov)
- Therefore, the National Institute for Occupational Safety and Health* (NIOSH) recommends limiting wood dust exposures to prevent these health problems. (cdc.gov)
Mites thrive1
- Dust mites thrive in moist air. (medlineplus.gov)
Interstellar dust1
- Solar System dust includes comet dust , planetary dust (like from Mars), [3] asteroidal dust , dust from the Kuiper belt , and interstellar dust passing through the Solar System. (wikipedia.org)
Africa's Sahara Desert2
- In this photo-like image collected over three consecutive satellite overpasses, a thick plume of dust stretches hundreds of kilometers from its origins in Africa's Sahara Desert to the Lesser Antilles Islands on the eastern edge of the Caribbean Sea. (nasa.gov)
- Every year, mineral-rich dust from North Africa's Sahara Desert is lifted into the atmosphere by winds and carried on a 5,000-mile journey across the North Atlantic to the Americas. (eurekalert.org)
Zodiacal1
- In the Solar System , dust plays a major role in the zodiacal light , Saturn 's B Ring spokes , the outer diffuse planetary rings at Jupiter , Saturn, Uranus and Neptune , and comets . (wikipedia.org)
Volcanic2
- There's always a lot of dust from outer space floating down to Earth, little bits of asteroids and comets, but this dust is normally only a tiny fraction of the other dust in our atmosphere such as volcanic ash, dust from deserts and sea salt. (eurekalert.org)
- The dark patches are dune fields composed of dust-blown volcanic material on the surface that built a giant erg around the polar cap. (dlr.de)
Atmosphere9
- This airborne dust is considered an aerosol and once in the atmosphere, it can produce strong local radiative forcing. (wikipedia.org)
- Road dust is a significant contributor to the generation and release of particulates into the atmosphere. (wikipedia.org)
- Carlton Allen, astromaterials curator at JSC, said Stardust's success is a prelude to other possible specimen-gathering missions to comets, asteroids, as well as bringing back to Earth whiffs of Mars' atmosphere, bits of high-altitude martian dust, as well as rock and soil direct from the red planet's surface. (space.com)
- CALIPSO, short for "Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation," uses a laser range finder or lidar to scan Earth's atmosphere for the vertical distribution of dust and other aerosols. (nasa.gov)
- The amount of rainfall is correlated with wind patterns that can sweep dust from the Sahara and the Sahel into the upper atmosphere, which is basically a superhighway to the Amazon. (nasa.gov)
- The cause of this ice age was a mystery, until now: a new study in Science Advances argues that the ice age was caused by global cooling, triggered by extra dust in the atmosphere from a giant asteroid collision in outer space. (eurekalert.org)
- Schmitz and his colleagues are the first to show that this ice age syncs up with the extra dust in the atmosphere. (eurekalert.org)
- The extra dust in the atmosphere helps explain the ice age--by filtering out sunlight, the dust would have caused global cooling. (eurekalert.org)
- Joseph was in charge of dust experiments on the ill-fated Columbia space shuttle mission, which included astronaut Col. Ilan Ramon, that exploded on reentry to the atmosphere three years ago. (jpost.com)
Researchers8
- The researchers also discuss the discovery in the 1970s and 1980s of the link between dust transport and African climate following an increase in dust transport to the Caribbean due to the onset of severe drought in the Sahel. (eurekalert.org)
- As researchers," he adds, "we ask ourselves two basic questions: "How much dust is transported? (nasa.gov)
- Surveys by NIOSH researchers indicated that wood dust from the horizontal belt sanders used in woodworking was not effectively controlled. (cdc.gov)
- As a result, researchers developed an inexpensive auxiliary ventilation system for the horizontal belt sanders that significantly reduced wood dust emissions into the workroom. (cdc.gov)
- To figure it out, researchers looked for traces of space dust in 466-million-year-old rocks, and compared it to tiny micrometeorites from Antarctica as a reference. (eurekalert.org)
- These researchers have been studying moon dust for several years . (nist.gov)
- NIST researchers have been measuring moon dust collected during the Apollo missions for several years. (nist.gov)
- The workshop resulted in a set of recommendations addressed to policy-makers, managers, service providers and researchers aimed at raising awareness of the negative impacts of airborne dust on health and designing and implementing preparedness and mitigation measures. (who.int)
Martian5
- This video and audio show the results of NASA's Perseverance Mars rover using its SuperCam microphone to record the sounds of a Martian dust devil - the first time any such recording has been made. (nasa.gov)
- The dust devil passed directly over Perseverance on Sept. 27, 2021, the 215th Martian day, or sol, of the mission. (nasa.gov)
- The rover will characterize the planet's geology and past climate, pave the way for human exploration of the Red Planet, and be the first mission to collect and cache Martian rock and regolith (broken rock and dust). (nasa.gov)
- A U.S-size portion of this area is now choked with so much dust, martian days resemble twilights-or worse. (nationalgeographic.com)
- This series of images shows simulated views of a dust-darked martian sky blotting out the sun from the Opportunity rover's point of view. (nationalgeographic.com)
Space dust7
- Space dust" redirects here. (wikipedia.org)
- For other uses, see Space dust (disambiguation) . (wikipedia.org)
- There are several methods to obtain space dust measurement . (wikipedia.org)
- Where does all this space dust come from, anyway? (popsci.com)
- But all the activity on Earth generates plenty of dust, too, making the measurement of just space dust pretty difficult. (popsci.com)
- 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. (popsci.com)
- Then, because space dust spreads around the planet pretty evenly, they multiplied this number by the surface area of the entire Earth to figure out how many tons of micrometeorites hit us annually. (popsci.com)
Typically1
- These estimates were calculated from measurements of the amounts of dusts typically found on children's hands and the assumptions on hand-to-mouth rates, the percentage of the hand that enters a child's mouth, the extent to which the amount of dust on the hand might be replenished between mouthing events, and the number of hours a day in which children engage in mouthing behavior. (cdc.gov)
Particle1
- The research team developed a method for both measuring and computationally analyzing how the dust particle shapes scatter light. (nist.gov)
Amounts2
- In conclusion, Dr. Freeman stressed that considerable amounts of soil and dust ingestion can occur on a daily basis as a result of children's typical behavior patterns, and not necessarily from what have traditionally been considered intentional soil-pica events. (cdc.gov)
- The use of horizontal belt sanders in woodworking creates significant amounts of wood dust. (cdc.gov)
MODIS1
- The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite observed the dust in two overpasses. (nasa.gov)
Comet dust1
- We were the first people in the history of the planet to see comet dust in hand," he reported today in a press briefing held at the center. (space.com)
Circumstellar1
- in the clouds of the diffuse interstellar medium , in molecular clouds , in the circumstellar dust of young stellar objects , and in planetary systems such as the Solar System , where astronomers consider dust as in its most recycled state. (wikipedia.org)
Airborne dust2
- 21 October 2015 -- WHO's Regional Centre for Environmental Health Action, the World Meteorological Organization, United Nations Environment Programme (UNEP) Regional Office for West Asia, European Organisation for the Exploitation of Meteorological Satellites and State Meteorological Agency of Spain, orrganized the first Africa/Middle East expert meeting and workshop on the health impact of airborne dust in Amman, Jordan, from 2 to 5 November 2015. (who.int)
- The main objectives were to assess the state of knowledge and encourage country action to address the impact of airborne dust on public health in the Middle East and North African Region. (who.int)
Scientists4
- Oct. 22, 2019 Scientists have developed a forensic tracer that uses lead isotopes to detect and measure coal fly ash in dust, soil and sediments. (sciencedaily.com)
- But one thing is for sure, this technology is here, it's getting more sophisticated, and it is unlikely that anyone (i.e. government officials, scientists, etc.) can or will restrain smart dust. (networkworld.com)
- And some of that dust is caught in orbit around the asteroid, scientists announced March 19 at the Lunar and Planetary Science Conference. (sciencenews.org)
- When scientists see them occur more frequently at a certain time of day, or approach from a certain direction, they use that information to focus their monitoring to try to catch a dust devil. (nasa.gov)
North Africa2
- A tremendous plume of dust from North Africa drifts toward the Caribbean and contiguous United States. (nasa.gov)
- Much of today's dust research is focused on North Africa as it is Earth's largest and most persistent source of dust. (eurekalert.org)
Plumes4
- This natural-color image shows dual dust plumes blowing off the African coast on June 22, 2009. (nasa.gov)
- This true-color image from July 1, 2009, shows a series of giant dust plumes west of Mauritania. (nasa.gov)
- BOULDERY BENNU Near-Earth asteroid Bennu (shown in multiple views from the OSIRIS-REx spacecraft) surprisingly erupts plumes of dust from its rocky surface. (sciencenews.org)
- NASA's OSIRIS-REx spacecraft has watched Bennu spit out plumes of dust 11 times since the spacecraft arrived at the asteroid in December 2018. (sciencenews.org)
Respiratory3
- Coal dust is responsible for the respiratory disease known as pneumoconiosis, including coal worker's pneumoconiosis disease that occurs among coal miners. (wikipedia.org)
- Across the Atlantic, dust brings problems and benefits: respiratory illness and coral bleaching, but also rich soils. (nasa.gov)
- This alert warns agricultural workers who inhale contaminated organic dust that they can develop serious respiratory illness. (cdc.gov)
Asthma5
- When your asthma or allergies become worse due to dust, you are said to have a dust allergy. (medlineplus.gov)
- Dust mites may be the most common trigger of year-round allergies and allergic asthma. (aafa.org)
- Workers exposed to wood dusts have experienced a variety of adverse health effects such as eye and skin irritation, allergy, reduced lung function, asthma, and nasal cancer. (cdc.gov)
- The association between house dust allergy and asthma has long been recognized, and it has been demonstrated that a major allergen in house dust is related to the presence of mites of the genus Dermatophagoides 1 . (nature.com)
- The prevalence of asthma and allergic sensitization was 4 and 6 times lower in the Amish population, with higher median endotoxin levels in house dust. (medscape.com)
Allergy symptoms1
- The risk of dust and dander allergy symptoms is moderate. (accuweather.com)
Mineral3
- Wind-borne mineral dust also plays an important role in climate by modulating solar radiation and cloud properties. (eurekalert.org)
- The Bodele depression: a single spot in the Sahara that provides most of the mineral dust to the Amazon forest. (howstuffworks.com)
- and mineral dust. (who.int)
Tons2
- For the first time, CALIPSO has quantified the amount of dust that makes the trans-continental voyage-and the numbers are impressive: of the 182 million tons (or nearly 700,000 semi trucks' worth) of dust that leave the Sahara each year, 27.7 million tons, or 15% of the total are scattered over the Amazon basin. (nasa.gov)
- Tons of lead dust were released between 1950 and 1985 in urban areas by vehicles using leaded gasoline, and improper handling of lead-based paint also has contributed to contamination. (sciencedaily.com)
Allergies3
- Very tiny insects called dust mites are the main cause of dust allergies. (medlineplus.gov)
- If you suffer from dust and dander allergies, taking allergy medication can help relieve symptoms. (accuweather.com)
- I am wondering if there is any supplement or approach (diet/ air purifier) that have helped you to control your dust allergies? (reddit.com)
Traces1
- The evolution of dust traces out paths in which the Universe recycles material, in processes analogous to the daily recycling steps with which many people are familiar: production, storage, processing, collection, consumption, and discarding. (wikipedia.org)
Dynamical1
- Slightly changing any of these parameters can give significantly different dust dynamical behavior. (wikipedia.org)
Workers5
- An estimated 30%-40% of workers exposed to such organic dusts will develop ODTS. (cdc.gov)
- Since 1980, more than 130 workers have been killed and more than 780 injured in combustible dust explosions. (industryweek.com)
- These include 14 people who were killed in a dust explosion Feb. 7, 2008, at an Imperial Sugar Co. plant in Georgia and three workers who were burned in April 2009 in an Illinois pet food plant dust explosion. (industryweek.com)
- OSHA received additional support for a combustible dust standard from the CSB during a congressional hearing in 2008 when the board said a new standard, combined with enforcement and education, could save workers' lives. (industryweek.com)
- Construction workers -- it's not just dust! (cdc.gov)
Clouds3
- Dust clouds actually help keep surface temperatures warmer, and Mars is entering its summer. (nationalgeographic.com)
- It is currently spring in the northern hemisphere, and water-ice clouds and small dust-lifting events are frequently observed along the edge of the seasonally retreating ice cap. (dlr.de)
- Dust has another beneficial effect - it can seed clouds and increase rainfall production," Price said. (jpost.com)
Africa2
Silica1
- DEWALT has a range of tools and accessories to help you comply with the new OSHA Silica Dust Ruling (1926.1153). (dewalt.com)
Meteorites1
- Extracting the extraterrestrial matter--the tiny meteorites and bits of dust from outer space--involves taking the ancient rock and treating it with acid that eats away the stone and leaves the space stuff. (eurekalert.org)
Soil4
- Dr. Freeman's presentation focused on incidental ingestion of soil and dust that results from children's typical eating and mouthing behaviors. (cdc.gov)
- Thus, she reports her results as ingestion of "soil/dust," rather than ingestion of strictly household dust. (cdc.gov)
- At the upper end of the soil ingestion range, children with the maximum dust loading on their hands (i.e., 58.2 mg dust per hand) who have a hand-to-mouth rate of 27.0 events per hour are estimated to have an ingestion rate of 1,800 mg per day. (cdc.gov)
- Dr. Freeman explained that little data are available for soil/dust replenishment on hands, for mouthing activities during 24-hour time periods, and for the consistency of these behaviors across days or weeks. (cdc.gov)
Indoor2
- Vacuum at least once a week with a vacuum that contains a HEPA filter to cut down on indoor dust and dander. (accuweather.com)
- Major indoor aeroallergens are derived from dust mites (see the image below), cockroaches, cat, dog, and other furry-animal debris, and fungi. (medscape.com)
Symptoms1
- The risk of dust and dander symptoms is extremely high. (accuweather.com)
Blew off1
- Dust blew off the coast of Turkey toward the island of Cyprus in late August 2008. (nasa.gov)
Wall of dust2
- They form when winds from thunderstorms pick up sand, dust and dirt, forming a wall of dust and dropping visibility to near zero. (abcactionnews.com)
- Visible from space: The wall of dust marching across the Australian outback to turn the skies over Sydney blood red. (howstuffworks.com)
Plume appears1
- The dust plume appears widest immediately west of Cyprus. (nasa.gov)
Lift the dust1
- Thunderstorms and cyclones can produce high-speed winds that lift the dust and transport it thousands of miles through the air. (cdc.gov)
Amount of dust2
Levels of dust1
- citation needed] Reducing vehicle maintenance costs by lowering the levels of dust that clog filters, bearings and machinery. (wikipedia.org)
Mars2
- In the past, NASA has used electrostatics for removing dust from solar panels on Mars rovers with the help of electrodynamic screens. (popsci.com)
- But when a 93-mile-wide asteroid between Mars and Jupiter broke apart 466 million years ago, it created way more dust than usual. (eurekalert.org)
Climate2
- Dust affects climate and, at the same time, climate change will affect dust. (nasa.gov)
- The goals of this interdisciplinary project are to identify the climate- and human-induced sources of dust and to determine and explain the factors affecting the dust-source areas such as climate variation, land-use change, social, political, and economic drivers, and water management in time and space using remote sensing and artificial intelligence techniques. (lu.se)
Bowl6
- In a series of poems, fifteen-year-old Billie Jo relates the hardships of living on her family's wheat farm in Oklahoma during the dust bowl years of the Depression. (librarything.com)
- While others flee from the dust bowl, Billie Jo is left to find peace in the bleak landscape of Oklahoma -- and in the surprising landscape of her own heart. (librarything.com)
- I generally don't seek out books about the Great Depression or the Dust Bowl, and probably wouldn't have gravitated to this one except for its status as an award winner. (librarything.com)
- I expected this to be a general look at life in a specific time and place (Oklahoma during the Dust Bowl of the 1930s) in the same vein as "All of a Kind Family", which detailed Jewish life in the Lower East Side during the early 1900s. (librarything.com)
- It's the days of the Dust Bowl and Great Depression, and rain is as scarce as money. (gale.com)
- Surviving the Dust Bowl. (howstuffworks.com)
Explosion2
- Artist's impression of dust formation around a supernova explosion. (wikipedia.org)
- 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. (wikipedia.org)
Rover's1
- At the same time that SuperCam's microphone recorded the dust devil, Perseverance's weather sensors (measuring wind, pressure, temperature, and dust) and the rover's left navigation camera were on. (nasa.gov)
Dataset3
- In this article, a dataset of age-depth modelling data, sedimentation rates and dust mass accumulation rates (MAR) from four loess-palaeosol sequences from the Carpathian Basin is presented. (lu.se)
- The dataset is related to the article "Detailed luminescence dating of dust mass accumulation rates over the last two glacial-interglacial cycles from the Irig loess-palaeosol sequence, Carpathian Basin", published in the journal Global and Planetary Change by PeriÄ et al. (lu.se)
- 1]. In the dataset, luminescence ages from the loess sites Irig, Nosak, Stari Slankamen and Crvenka were modeled using the r.bacon software after which the dust mass accumulation rates were calculated. (lu.se)
Emissions1
- 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. (wikipedia.org)
Smart Dust10
- The Smart Dust Podcast is for you. (google.com)
- But what on Earth is Smart Dust? (google.com)
- The mission of the Smart Dust Podcast is to give you brain-expanding ideas and perspectives to breathe in and apply to your daily and professional life. (google.com)
- Smart dust, a sensor technology, could usher in a tidal wave of changes in the way people do business, or track items or people. (networkworld.com)
- Thanks to advances in silicon and fabrication techniques and the promise of what sensor technology can do, smart dust is starting to attract a lot of attention these days. (networkworld.com)
- This open source platform has become the standard for many smart dust sensors. (networkworld.com)
- A year ago, the size of smart dust was about 2 millimeters cubed - smaller than a piece of glitter. (networkworld.com)
- Battery life is up to five or more years and certain types of smart dust can use renewable power, such as solar or wind. (networkworld.com)
- The promise of smart dust is both incredible and scary. (networkworld.com)
- Certainly, an imaginative mind can take the potential smart dust applications to wonderful and horrifying uses. (networkworld.com)
House dust1
- In a warm, humid house, dust mites can survive all year. (aafa.org)
Remove dust1
- Dust with a microfiber cloth will help remove dust rather than push it around. (accuweather.com)
Control dust1
- Central heating and air-conditioning systems may help control dust. (medlineplus.gov)
Organic dust1
- One such alert, Request for Assistance in Preventing Organic Dust Toxic Syndrome (1), was recently published and is available to the public. (cdc.gov)