This study delineates sandstone reservoir flow zones in the north-western Bredasdorp Basin, offshore South Africa, using conventional core porosity and permeability data. The workflow begins by integrating sedimentology reports logs to identify lithofacies before evaluating petrophysical zones. Three were classified as 1, 2, 3. Lithofacies 1 is a silty shale bioturbated sandstone, 2 an interbed...

In the isostructural oxides Ca3CoMO6 (M = Co, Rh, Ir), the CoMO6 chains made up of face-sharing CoO6 trigonal prisms and MO6 octahedra are separated by Ca atoms. We analyzed the magnetic and electronic properties of these oxides on the basis of density functional theory calculations including on-site repulsion and spin-orbit coupling, and examined the essential one-electron pictures hidden behi...

Inhibition of a tartrate-resistant acid phosphatase (ACP) from Leishmania donovani and the tartrate-sensitive ACP from human seminal fluid (prostatic ACP) was examined using a series of 13 molybdate-containing heteropolyanions. The heteropolyanions were divided into four groups based on the number of molybdenum atoms they contain: Group I, Mo4; Group II, Mo6-8; Group III, Mo12; Group IV, Mo18. ...

We report on a simple technique for the preparation of nanocrystalline metal molybdate Zn1-xCoxMoO4 (0 ? x 1) using polymeric route. The formation mechanism, homogeneity, and structure obtained powders were investigated with thermal analysis (TGA–DTA), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR). morphology was examined by scanning electron microscopy (SEM), f...

New and exotic ground states of magnetic materials are highly sought after extensively studied for the insights they provide into thermodynamics disorder fundamental interactions. By controlling crystal structure an appropriate lattice, it is possible to cause strong exchange interactions sum zero so be frustrated. Due presence this frustration, lowest energy configuration that results may cruc...

Koshi Saito, Yoshiyuki Takahashi, and Mizu Wada Department of Applied Chemistry, Faculty of Engineering, Tokai University, 1117 Kitakaname, Hiratsuka-shi, Kanagawa-ken 259-12, Japan Z. Naturforsch. 40c, 819-826 (1985); received August 12, 1985 Carthamin Synthesis, Safflower Seedling, Catalytic Property An enzyme associated with carthamin formation in Carthamus tinctorius L. (carthamin-synthesiz...

Our laboratory has reported that two major noncollagenous dentin proteins, dentin sialoprotein and dentin phosphoprotein, are specific cleavage products of a larger precursor protein termed dentin sialophosphoprotein (MacDougall, M., Simmons, D., Luan, X., Nydegger, J., Feng, J. Q., and Gu, T. T. (1997) J. Biol. Chem. 272:835-842). To confirm our single gene hypothesis and initiate in vitro pro...

The corrosion of CoCrMo, an alloy frequently used in orthopedic implants, was studied with an electrochemical quartz crystal microbalance (QCM) in three physiologically relevant solutions. Mass changes were measured during potentiodynamic tests, showing material deposition in protein solutions at potential levels that caused mass loss when the proteins were not present. X-ray photoelectron spec...

We report the synthesis and characterization of five novel Mo-containing polyoxometalate (POM) bisphosphonate complexes with nuclearities ranging from 4 to 12 and with fully reduced, fully oxidized, or mixed-valent (Mo(V), Mo(VI)) molybdenum, in which the bisphosphonates bind to the POM cluster through their two phosphonate groups and a deprotonated 1-OH group. The compounds were synthesized in...