Libby Legacy Minnesota Community Exhibits Nonoccupational Health Impacts Consistent with Asbestos Damage Adverse health effects of asbestos have been documented worldwide for the better part of the last half-century, with a large number of studies focused on occupa tional exposures received during the mining and processing of vermiculite ore. A new study reports on nonoccupational health effect...

Introduction: Over the past year, tremoliteasbestos and vermiculite mining in Libby, Montana have gone from obscurity to the forefront of the national media. The Seattle Post-Intelligencer “broke” the story in November 1999 about the world’s largest vermiculite mine and the problems associated with its asbestos exposure. As the stories point out, several hundred miners, their families, and non-...

Bauhinia scandens is an ornamental plant and it has anti-tumor properties. The demand for seedlings of this species makes necessary to know about the germinative behavior seeds initial growth seedlings. objective present work was determine type substrate moistening conditions that are more favorable emergence development B. scandens. were disposed on three substrates: sand, vermiculite, commerc...

This study investigated the crystallization kinetics of a vermiculite-based glass-ceramic system prepared by melt-quench technique. Four compositions with different boron content consisting SiO2–Al2O3–K2O–B2O3–MgF2 components were prepared, and then vermiculite mineral was added to these as 50/50 wt%. Differential scanning calorimetry (DSC), thermal analysis (DTA), X-ray Diffraction (XRD), Scan...

rhizospheres inoculated with strain PBK3-LS, 48% of the dibenzofuran was remoyed within 3 days (initia] substrate, 25 pg). Similar resutts were obtained in soilcultured siratro rhizospheres using sterite yermiculite. When non-sterile field seils were used instead of sterile vermiculite, the inocu]ated recombinant strain could grow on the siratro root in all soils tested, except for wet paddy fi...

Anatase TiO(2) nanocuboids wholly exposed with high-energy {001} and {100} facets were successfully synthesized by a novel, environmentally benign synthetic strategy using acid-delaminated vermiculite (DVMT) and tetramethylammonium hydroxide as synergistic morphology-controlling reagents, where the DVMT layers act as effective hard template selectively stabilizing the {001} facets of TiO(2).

Erythroxylum pauferrense Plowman is an understory species native to Brazil, with great importance in the conservation of genetic resources and used as a food source for animals regions where occurs. The currently listed category EN (endangered). objective this work was evaluate effect different substrates on emergence initial growth E. pauferrense. experiment carried out protected environment, ...

Complexes of 1,4-diazabicyclo [2.2.2] octane (triethylene diamine) with smectite and vermiculite were made for the purpose of exposing the internal surfaces of the clays for adsorption of gases and possible catalytic activity. When the diprotonated form of the amine saturated the exchange sites, internal surfaces of the clays were found to be available to nitrogen, ethane, and 2,4-dimethyl pent...

Smectite clays are hydrated layer silicates that, like micas, occur naturally in abundance. Importantly, they have readily modifiable interlayer spaces that provide excellent sites for nanochemistry. Vermiculite is one such smectite clay and in the presence of small chain-length alkyl-NH(3)Cl ions forms sensitive, 1-D ordered model clay systems with expandable nano-pore inter-layer regions. The...