Browsing ELibrary by Author "Vali H."

Now showing items 1-7 of 7

CARBON AND HYDROGEN ISOTOPE FRACTIONATIONS ASSOCIATED WITH DISSIMILATORY IRON-REDUCING BACTERIA

Romanek C.S.; Zhang C.L.; Li Y.; Horita J.; Vali H.; Cole D.R.; Phelps T.J. (2003)

Shewanella putrefaciens strain CN-32 and Shewanella algae strain BrY were grown in laboratory cultures at 30 °C to characterize carbon and hydrogen isotope fractionation patterns related to the growth of iron-reducing ...
EXPANDABILITY OF ANCHIZONAL ILLITE AND CHLORITE: SIGNIFICANCE FOR CRYSTALLINITY DEVELOPMENT IN THE TRANSITION FROM DIAGENESIS TO METAMORPHISM

Shata S.; Hesse R.; Martin R.F.; Vali H. (2003)

In mixed-layer illite/smectite containing >80% illite, the presence of an expandable component and changes in its abundance are difficult or impossible to detect with the X-ray diffraction (XRD) method using conventional ...
FORMATION OF SINGLE-DOMAIN MAGNETITE BY A THERMOPHILIC BACTERIUM

Zhang C.; Vali H.; Romaner C.S.; Phelps T.J.; Liu S.V. (1998)

Magnetite is a common product of bacterial iron reduction and may serve as a potential physical indicator of biological activity in geological settings. Here we report the formation of single-domain magnetite under laboratory ...
IRON REDUCTION AND ALTERATION OF NONTRONITE NAU-2 BY A SULFATE-REDUCING BACTERIUM

Li Y.-L.; Zhang C.L.; Vali H.; Sears S.K.; Yang J.; Deng B. (2004)

Iron-rich clay minerals are abundant in the natural environment and are an important source of iron for microbial metabolism. The objective of this study was to understand the mechanism(s) of enhanced reduction of Fe(III) ...
MN AND ZN INCORPORATION INTO CALCITE AS A FUNCTION OF CHLORIDE AQUEOUS CONCENTRATION

Temmam M.; Paquette J.; Vali H. (2000)

During spiral growth of the calcite rhombohedron {1014}, divalent metals substituting for Ca2+ are differentially incorporated due to steric differences inherent to the asymmetric kink sites exposed at nonequivalent growth ...
NANOFORMS: A NEW TYPE OF PROTEIN-ASSOCIATED MINERALIZATION

Vali H.; McKee M.D.; Ciftcioglu N.; Sears S.K.; Plows F.L.; Chevet E.; Ghiabi P.; Plavsic M.; Kajander E.O.; Zare R.N. (2001)

Controversy surrounds the interpretation of various nano-phenomena as being living organisms. Incubation of fetal bovine serum under standard cell culture conditions results in the formation of free entities in solution, ...
TEM STUDY OF PT-C REPLICAS OF CALCITE OVERGROWTHS PRECIPITATED FROM ELECTROLYTE SOLUTIONS

Paquette J.; Vali H.; Mucci A. (1996)

The surface microtopography of synthetic magnesian calcite overgrowths on calcite powders was imaged on Pt-C replicas by transmission electron microscopy. The overgrowths were precipitated at room temperature under ...

Browsing ELibrary by Author "Vali H."

Browsing ELibrary by Author "Vali H."

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