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1. Adsorption and redox reactions of heavy metals on synthesized Mn oxide minerals.
Match Strength: 9.077
Several Mn oxide minerals commonly occurring in soils were synthesized by modified or optimized methods. The morphologies, structures, compositions and surface properties of the synthesized Mn oxide minerals were characterized. Adsorption and redox reactions of heavy metals on these minerals in relation to the mineral structures and surface properties were also investigated. The synthesized birnessite, todorokite, cryptomelane, and hausmannite were single-phased minerals and had the typical morphologies from analyses of XRD and TEM/ED. The PZCs of the synthesized birnessite, todorokite and ... Read More »
» Published in Environ Pollut. 2006 Sep 20;
2. Elevated Eocene atmospheric CO2 and its subsequent decline.
Match Strength: 3.968
Quantification of the atmospheric concentration of CO2 ([CO2]atm) during warm periods of Earth's history is important because burning of fossil fuels may produce future [CO2]atm approaching 1000 parts per million by volume (ppm). The early Eocene (~56 to 49 million years ago) had the highest prolonged global temperatures of the past 65 million years. High Eocene [CO2]atm is established from sodium carbonate minerals formed in saline lakes and preserved in the Green River Formation, western United States. Coprecipitation of nahcolite (NaHCO3) and halite (NaCl) from surface waters in contact ... Read More »
» Published in Science. 2006 Sep 29;313(5795):1928.
3. Organically directed iron sulfate chains: structural diversity based on hydrogen bonding interactions.
Match Strength: 3.443
Six organically directed 1-D iron sulfates hydrated and hydrolyzed to different extents have been prepared hydrothermally. [C2H10N2]1.5[Fe(SO4)(3)].2H2O (I), [C2H10N2][Fe(SO4)2(OH)].H2O (II), [C6H18N2]0.5[Fe(SO4)2(H2O)2] (III), and [C6H18N2]0.5[Fe2(SO4)(H2O)4(OH)].H2O (V) possess the linear topological structures observed in ferrinatrite, sideronatrite, krohnkite, and copiapite minerals, respectively. [C4H12N2][Fe2(SO4)3(OH)2(H2O)2].H2O (IV) shows a novel linear structure that can be regarded as a hybrid of the tancoite and butlerite types. [C6N4H22]0.5[Fe(SO4)2(OH)].2H2O (VI) adopts a cis ... Read More »
» Published in Inorg Chem. 2006 Oct 2;45(20):8452-8.
4. First (3 + 2)-dimensional superspace approach to the structure of levyclaudite-(Sb), a member of the cylindrite-type minerals.
Match Strength: 3.152
The structure of synthetic levyclaudite-(Sb), approximately (Pb(1 - y)Sb(y)S)(1.357)[Sn(1 - x)(Cu(2))(x)S(2)], has been determined by single-crystal X-ray diffraction on the basis of the (3 + 2)-dimensional superspace approach. This misfit-layer compound, of the cylindrite type, results from the combination of two heavily modulated triclinic Q and H subsystems with a common q wavevector and only one shared reciprocal axis (stacking direction). The Q pseudo-tetragonal layer, approximately (Pb(0.70)Sb(0.30)S), derived from the NaCl archetype, is positively charged; the H pseudo-hexagonal layer, ... Read More »
» Published in Acta Crystallogr B. 2006 Oct;62(Pt 5):775-89. Epub 2006 Sep 18.
5. Nutritional profile of the Brazilian Amputee Soccer Team during the precompetition period for the world championship.
Match Strength: 3.113
OBJECTIVE: The purpose of this study was to determine the dietary and anthropometric profiles of the Brazilian amputee soccer players during the training period before the world soccer amputee championship, according to their positional roles in the game. METHODS: Fifteen male athletes participated in the study. Data on height, weight, skinfold thickness, and circumferences were collected to assess nutritional status. Dietary intake was obtained by using 6-d dietary records, analyzed by a Nutrition Support Program for total energy intake, carbohydrates, proteins, lipids, vitamins, and minerals ... Read More »
» Published in Nutrition. 2006 Oct;22(10):989-95. Epub 2006 Sep 15. Comment in: Nutrition. 2006 Oct;22(10):1071-2.
6. Searching for signatures of life on Mars: an Fe-isotope perspective.
Match Strength: 2.890
Recent spacecraft and lander missions to Mars have reinforced previous interpretations that Mars was a wet and warm planet in the geological past. The role of liquid water in shaping many of the surface features on Mars has long been recognized. Since the presence of liquid water is essential for survival of life, conditions on early Mars might have been more favourable for the emergence and evolution of life. Until a sample return mission to Mars, one of the ways of studying the past environmental conditions on Mars is through chemical and isotopic studies of Martian meteorites. Over 35 ... Read More »
» Published in Philos Trans R Soc Lond B Biol Sci. 2006 Oct 29;361(1474):1715-20.
7. Fluorescence spectroscopy: a tool to characterize humic substances in soil colonized by microorganisms?
Match Strength: 2.682
The ability of eight soil microfungal species, Alternaria alternata, Clonostachys rosea f. rosea, Exophiala cf. salmonis, Fusarium cf. coeruleum, Fusarium redolens, Paecilomyces lilacinus, Penicillium canescens and Phoma sp., and two known basidiomycete humic acid (HA) degraders, Trametes versicolor and Phanerochaete chrysosporium, to modify fluorescence properties of fulvic acids (FA) and/or HAs was determined. Effects of minerals and/or glucose on the modifications were examined. FA purified on polyvinyl-polypyrrolidone (PVPP) chromatography column was used. Purification of FA on PVPP column ... Read More »
» Published in Folia Microbiol (Praha). 2006;51(3):215-21.
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