asbestos

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asbestos

 [as-bes´tos]
fibrous calcium and magnesium silicate, a nonburning compound used in roofing materials, insulation for electric circuits, brake linings, and many other products that must be fire resistant. Alternative materials are being developed to replace asbestos because fine asbestos fibers can be inhaled, causing asbestosis, pleural mesothelioma, and other types of lung cancer. In 1971, asbestos became the first material to be regulated by the Occupational Safety and Health Administration.

as·bes·tos

(as-bes'tŏs), Avoid the mispronunciation as-bes'ōz.
The commercial product, after mining and processing, obtained from a family of fibrous hydrated silicates divided mineralogically into amphiboles (amosite, anthrophyllite, and crocidolite) and serpentines (chrysotile); it is virtually insoluble and is used to provide tensile strength and moldability, thermal insulation, and resistance to fire, heat, and corrosion; inhalation of asbestos particles can cause asbestosis, pleural plaques, pleural fibrosis, pleural effusion, mesothelioma, and lung cancer.
[G. unquenchable; so-called in the erroneous belief that when heated, its warmth could not be quenched]

asbestos

An incombustible mineral fibre once widely used in industry and commercial products (the USA, for example, used 30 billion tons of asbestos since 1900), such as insulation, brakes, fire-proofing, etc., prolonged overexposure to which may lead to asbestosis and possibly cancer.

Maximum exposure levels (1976 OSHA standard)
2 fibres/cm3/8 hours.

asbestos

Environment Any finished natural product containing a type of incombustible mineral fiber; the US has used 30 billion tons of asbestos since 1900; it is a component of ± 3000 manufactured products; maximum exposure levels–1976 OSHA standards = 2 fibers/ccm3/8 hr period

ASBESTOS

(as-bes'tŏs)
Acronym used in assessing casualties from chemical (and radiologic) agents. The components of the acronym are A for agent (type of chemical or radiation); S for state (e.g., solid, liquid, gas, vapor, aerosol); B for body site, or route of exposure (e.g., inhalational, percutaneous, ocular, enteral, parenteral); E for effects (local vs. systemic); S for severity of effects and of exposure; T for time course (e.g., time from exposure, length of latent period, prognosis); O for other diagnoses (both instead of and in addition to the agent originally considered); and S for synergism (interaction among multiple diagnoses).

as·bes·tos

(as-bes'tŏs)
Product obtained from fibrous hydrated silicates divided into amphiboles and serpentines; it is insoluble and is used to provide tensile strength and moldability, thermal insulation, and resistance to fire, heat, and corrosion; inhalation of asbestos particles can cause asbestosis and cancer of the lung and pleura.
[G. unquenchable; so-called in the erroneous belief that when heated, its warmth could not be quenched]

Asbestos

A naturally occurring mineral, utilized worldwide for its durability and heat resistant qualities. Extremely fibrous in nature, asbestos particles can easily enter the respiratory system and damage sensitive tissue. This damage can result in asbestosis, mesothelioma, and lung cancer.
Mentioned in: Asbestosis, Mesothelioma

as·bes·tos

(as-bes'tŏs)
The commercial product, after mining and processing, obtained from a family of fibrous hydrated silicates. Inhalation of such particles can cause asbestosis, pleural plaques, and other disorders.
[G. unquenchable; so-called in the erroneous belief that when heated, its warmth could not be quenched]

Patient discussion about asbestos

Q. Why have i been seeing so many commercials regarding asbestos related mesothelioma? I have been quite curious to know why law firms are pushing mesothelioma ads.

A. Most people who develop mesothelioma have worked on jobs where they inhaled asbestos particles.The liability resulting from the sheer number of lawsuits and people affected has reached billions of dollars.The amounts and method of allocating compensation have been the source of many court cases, reaching up to the United States Supreme Court.
so where ever there's money- there's lawyers..

More discussions about asbestos
References in periodicals archive ?
This is easily explained because asbestos exposure on the one hand and asbestos deposition and accumulation in the lungs on the other hand do not necessarily correlate with each other due to the different deposition and clearance rates of different asbestos fibers with respect to length, diameter and type [8,9,13].
Since adoption of the Clean Air Act, methods have been developed to improve testing for asbestos fibers such as the National Institute for Occupational Safety and Health' (NIOSH) 7400 and 7402 methods.
Lemaire et al (12) reported that rats injected intratracheally with 5 mg of ultrashort chrysotile asbestos fibers, all of which were less than 8 [micro]m in length, developed an alveolitis but no apparent fibrosis.
In order to prepare the prediction, the number of the population occupationally and paraoccupationally exposed to asbestos fibers in Poland was estimated.
Feder et al.'s [1] insistence on applying the insensitive and outdated technology of lung tissue analysis to the diagnosis of asbestos-related disease combined with their unsound demand for the presence of a certain number of asbestos fibers and asbestos bodies in lung tissue could lead to missed diagnoses of asbestos exposure in the case of individuals and to very substantial undercounting of the true magnitude of asbestos disease in populations.
Given the variability in the breadth of knowledge for specific mineral fibers, a full discussion of each type of asbestos fibers is beyond the scope of this summary report.
The optical and electron microscopic determination of pulmonary asbestos fiber concentration and its relation to the human pathological reaction.
Rieder's study "is a very elegant demonstration of the mechanisms by which asbestos fibers are incorporated into cells - one that I think will yield new insights into our understanding of the consequences of asbestos exposures and perhaps the importance of fiber size," says J.
The uncoated fiber burden in this individual indicated an appreciable number of anthophyllite asbestos fibers. This finding, coupled with analysis of cores from ferruginous bodies and the presence of ferruginous bodies in areas of interstitial fibrosis, pathologically supported the diagnosis of asbestos-related disease.
Riders and maintenance workers could inhale or ingest deadly asbestos fibers. class="10PalatinoTextThe asbestos in New Zealand was discovered in 2014 during routine inspection of locomotives.
The essential point to remember is that asbestos fibers are only unsafe when released into the air.

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