(n.) A variety of amphibole or of pyroxene, occurring in long and delicate fibers, or in fibrous masses or seams, usually of a white, gray, or green-gray color. The name is also given to a similar variety of serpentine.
Example Sentences:
(1) Three subcohorts were defined: 3212 men whose only exposure to asbestos was to amosite; 3430 exposed to crocidolite; and 675 to both amphiboles.
(2) Trichophytosis (T. equinum) is characterized as typical numerous small and round patches, covered by small, bran-like, asbestos-coloured scales.
(3) Using recently published data from the Surveillance, Epidemiology, and End Results project, coupled with the previously published estimates, projected asbestos related malignant mesothelioma mortality in the United States for the period 1985-2009 was estimated to be 21,500.
(4) Crocidolite asbestos fibers are rapidly ingested in large amounts by Tetrahymena.
(5) The benign localized mesothelioma is usually considered in the differential diagnosis of pleural tumors, but it is not related to asbestos exposure.
(6) This study examined different markers of lung immunologic and inflammatory responses to previous asbestos exposure.
(7) The role of alveolar macrophage (AM)-derived secretory products in fibroblast stimulation after the instillation of long and short asbestos to rat lungs is now investigated.
(8) Attention to the hazards of asbestos has aroused concern among many healthy persons who have been exposed at some time to one of the world's most versatile materials.
(9) The high sites' density with basic character, evidenced by use of various probe molecules, is very similar for the two asbestos types (chrysotile and crocidolite) and on the same order as the density encountered in some catalysts.
(10) Categorization of the pattern of physiologic abnormalities in patients with asbestos-associated disease may be important for clinical, compensation, and epidemiologic reasons.
(11) These results have been compared with asbestos samples obtained from the National Institute of Environmental Health Sciences (NIEHS).
(12) Results indicated that the percentage of S cells was similar in asbestos-treated and untreated cultures.
(13) The various neoplasms attributed to asbestos in the next decades posed an additional question: What influence did the fibrous shape of the particles have on carcinogenic potential?
(14) In 1964 it was first reported that asbestos workers had a higher risk of gastrointestinal cancer.
(15) There is no doubt that the presence of asbestos in the coal mine is one of the pathogenic factors of pneumoconiosis.
(16) We examined whether exposure of macrophages to crocidolite asbestos induced lipid peroxidation as measured by the thiobarbituric acid assay.
(17) The findings suggest widespread exposure to asbestos dust; occupational histories appeared to indicate the source of exposure in some but not all patients.
(18) The present standard method for evaluating asbestos fiber concentrations in workroom air excludes fibers less than 5 micron long even though it has been shown that small fiber concentrations dominate in a dust cloud.
(19) Among patients with mesothelioma a history of asbestos exposure was obtained in 44%, a history of no exposure in 22% and no specific mention of asbestos in 34%.
(20) Previous suggestions for converting TEM measurements to PCM equivalents lack generality because they fail to take into account the size distribution of the asbestos particles and the expectation that fiber-size distributions in current nonoccupational environments could differ from the workplaces of the past on which the risk equations are based.
Friable
Definition:
(a.) Easily crumbled, pulverized, or reduced to powder.
Example Sentences:
(1) High-grade left mainstem bronchial obstruction was caused by friable granulation tissue secondary to an underlying foreign body.
(2) As for group I specifically, colonic ulcerations due to Cytomegalovirus were present in all the patients, varying from punctate and superficial erosions to deep ulcerations, with granular and friable intervening mucosa.
(3) A 65-year-old woman experienced transient paralysis of the left arm immediately after palpation of the right carotid artery; at surgery, a friable, atherosclerotic plaque was removed from the bifurcation of the artery.
(4) Thus, the skin appears to develop a relative oxygen debt during CPB which may decrease the threshold for skin injury particularly in older patients who may have other predisposing factors, such as obesity, generalized atherosclerosis, diabetes, or friable skin.
(5) On proctoscopic examination, discrete 2- to 5-mm raised plaques are seen adherent ot an edematous, friable mucosa.
(6) Rhinosporidiosis most commonly involves the nose, and presents as a friable papillomatous mass causing nasal obstruction, epistaxis, purulent discharge, and headache may also occur.
(7) Brinase added to human plasma in vitro caused a decrease in fibrinogen concentration, positive paracoagulation tests and formation of a friable clot in sequence.
(8) In normal bowel segment this may not pose a problem, but forceful attempts at eversion in diseased, thickened, and friable bowel may result in damage to the bowel segment.
(9) Steely hair disease, a neurodegenerative disorder, is characterized by slow growth, progressive cerebral dysfunction, kinky friable hair, x-linked inheritance, and death before three years of age.
(10) The presence of phosphates makes oral medical treatment ineffective, but mixed stones are more friable than pure cystine stones and are therefore easier to treat by extracorporeal lithotripsy.
(11) Although friable callus was obtained from ovary tissue cultured on a medium containing 2 mg per 1 (11 micrometer) naphthaleneacetic acid and 4 mg per 1 (18 micrometer) BAP, it produced shoots after 8 weeks of further subculture on the same medium.
(12) Clustering of largely immobile food resources and friable soils appear to be the major factors influencing chrysochlorid distribution.
(13) The liver was large, friable, and gun-metal blue, with microscopically evident hepatocyte dissociation, degeneration, and necrosis.
(14) Two peaks of activity were observed, when DNP-Gly-Gly-Ile-Arg was used as a substrate, one of them being correspondent to prevalence of dense colonies in the culture and the other to the prevalence of friable networks of hyphae.
(15) Repeated passage of the nasopharyngeal airway and nasotracheal tube over relatively friable nasal mucosa accounted for increased hemorrhage in the dilated group.
(16) Scanning electron microscopy showed that OpaC- and OpaD-containing variants yielded greater mucosal damage than OpaB-containing and Opa- variants with the least damage caused by the OpaA-containing variant (clumped bacteria from dark opaque friable colonies).
(17) Friable vegetation was attached to the auricular surface of the mitral valve.
(18) In elk 3, several of the large muscles of the hindlimbs as well as the biceps brachii muscles of the forelimbs appeared pale, dry, and friable.
(19) The gastric mucosa was erythematous, friable, and bile stained, and the histology revealed chronic inflammation.
(20) Craniotomy showed a tender, friable tumor with a yellowish cyst fluid, but apparently not invading the brain parenchyma.