Results 121 to 130 of about 2,821 (174)
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Detection of chrysotile asbestos by using a chrysotile‐binding protein

Biotechnology and Bioengineering, 2007
AbstractIn the current studies, we found that the DksA protein from Escherichia coli binds strongly to chrysotile, which is the most commonly used form of asbestos. We developed a convenient colorimetric assay for chrysotile using a fusion of DksA and alkaline phosphatase along with 5‐bromo‐4‐chloro‐3‐indolyl‐phosphate and nitro blue tetrazolium as ...
Akio, Kuroda   +4 more
openaire   +2 more sources

Chrysotile, tremolite and carcinogenicity

The Annals of Occupational Hygiene, 1997
It has been suspected for many years that amphibole fibres in the tremolite series, a low level contaminant of chrysotile asbestos, may contribute disproportionately to the incidence of mesothelioma and perhaps other exposure-related cancers. A cohort of some 11,000 Quebec chrysotile workers, 80% of whom have now died, provided the opportunity to ...
J C, McDonald, A D, McDonald
openaire   +2 more sources

Synthesis of Fe‐doped chrysotile and characterization of the resulting chrysotile fibers

Crystal Research and Technology, 2009
AbstractThis study describes the formation of Fe‐doped chrysotile fibers with partial and total substitution of Mg by Fe. Syntheses were carried out with various starting mixtures (oxides, pure synthetic forsterite) in an externally heated pressure vessel in controlled hydrothermal conditions: temperature, 270 – 400 °C; pressure, 0.5 – 2 kbar; duration
Bloise A.[1   +6 more
openaire   +3 more sources

Health risk of chrysotile revisited [PDF]

open access: yesCritical Reviews in Toxicology, 2013
This review provides a basis for substantiating both kinetically and pathologically the differences between chrysotile and amphibole asbestos. Chrysotile, which is rapidly attacked by the acid environment of the macrophage, falls apart in the lung into short fibers and particles, while the amphibole asbestos persist creating a response to the fibrous ...
Raúl Barrera
exaly   +3 more sources

The Carcinogenicity of Chrysotile Asbestos

Annals of the New York Academy of Sciences, 1991
In in vitro test systems, chrysotile is markedly toxic, causes chromosomal aberrations, and is capable of inducing morphological and preneoplastic transformation. In carefully designed animal experiments, chrysotile produces lung cancer and mesothelioma as effectively as do the amphiboles tested.
openaire   +2 more sources

Pseudocrystals of chrysotile

Journal of Crystal Growth, 1977
Abstract Short, uniform fibers of chrysotile asbestos exhibit strong interparticle forces parallel to the fiber axis. Wetting a matte of these fibers, and then allowing it to dry, results in the aggregation of the fibers into distinct geometrical shapes.
A.E. Charola, S.Z. Lewin, M.J. Yoder
openaire   +1 more source

Mesothelioma in rats following intrapleural injection of chrysotile and phosphorylated chrysotile (chrysophosphate)

International Journal of Cancer, 1992
AbstractPathological effects of asbestos are probably dependent on the size and surface properties of the fibers. Surface‐modified chrysotile fibers were injected into the pleural cavity of rats to investigate the potency of the fiber to induce mesothelioma.
A, Van der Meeren   +5 more
openaire   +2 more sources

The porosity of amosite and chrysotile asbestos

American Industrial Hygiene Association Journal, 1976
A computer program has been set up in Fortran language to calculate pore size distribution using the Cranston-Inkley method of calculation. Nitrogen adsorption isotherms were determined on amosite and chrysotile asbestos at - 195 degrees C. Size reduction had a major effect on increasing pore volumes of both asbestos materials.
C H, Gorski, L E, Stettler, B L, Lempert
openaire   +2 more sources

Geoinspired synthetic chrysotile nanotubes

Journal of Materials Research, 2006
Since the 1991 discovery of hollow cylindrical carbon-based unidimensional structures, the nanotubular form of matter has been thoroughly investigated leading to a wealth of literature. Their particular features are not limited to graphite but are common in many inorganic highly anisotropic two-dimensional layered compounds.
ROVERI, NORBERTO   +5 more
openaire   +1 more source

The Chrysotile Defence

2008
Abstract In reviewing the science it is important to remember that asbestos is such a toxic material that even relatively trivial exposure can result in serious or fatal injury. For that reason, one might have expected physicians and allied scientists to have led the campaigns against the mineral and against the companies that produced ...
Jock McCulloch, Geoffrey Tweedale
openaire   +1 more source

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