Individual fluid inclusions in quartz were investigated by synchrotron radiation X-ray fluorescence (SXRF) microprobe to develop protocols for major-element microanalysis. Studies were conducted of synthetic fluid inclusions in Brazilian quartz that contain fluids of known NaC1-CaC12-H20 and KCI-H20 compositions. Inclusions were irradiated by synchrotron X-rays and the resulting energy-dispersi...

The crystal and molecular structure o f the title complex was determinated by single crystal X-ray diffraction (R = 0.066 for 1059 observed reflections). The approximately square-pyram­ idal coordination o f Cu(II) results from donor atoms 0 (12), 0 (1 ), N (l) , 0 (5 ) o f one H20 mo­ lecule as well as the tridentate Schiff base dianion ligand and from the weakly bonded 0(11) donor atom of one...

An interfaced plasma chromatograph/mass spectrometer (ALPHA-II) permits Identification of the positlve and negative ionic specles associated with ionlc peaks In the plasma chromatographic mobility spectra of pnitrophenol. The posltive ions observed and their reduced mobility values (KO) are MNO+ (1.67), MH+ (1.80) and the negative ion is [M HIat (1.87). These are essentially the ions that are p...

In our previous papers (George & Irvine, 1951, 1952, 1953a) we showed that the intermediate compound, which is formed when metmyoglobin (MetMb) reacts with hydrogen peroxide, methyl or ethyl hydroperoxide, may be considered as one in which the iron has an effective oxidation number of + 4. Its relationship to MetMb, represented by Fep3+(H20), is given by the equation, Fep3+(H20) = FepI' + e , w...

In part 1 of this series (ref 1) we presented a qualitative thermodynamic description of the phase behavior of quaternary mixtures of water, nonpolar solvents, nonionic amphiphiles, and salts. The phase behavior of such mixtures follows general patterns that are essentially determined by the phase diagrams of the corresponding binary and ternary mixtures. In this paper (part 2) the nonionic amp...

we report a case of a 40 year old man with portal hypertension caused by a splenic arteriovenous fistula that was diagnosed at laparotomy. he presented with bleeding esophageal varices and was initially treated by sclerotherapy. at laparotomy, portal pressure was 40 cmh20 but fell to 20 cm h20 after the fistula was treated with splenectomy. all symptoms disappeared shortly after operation and t...

The solidus for peridotite-HzO-COz is a divariant surface traversed by univafiant lines that locate the intersections of subsolidus divariant surfaces for carbonation or hydration reactions occurring in the presence of HzO-COz mixtures. Vapor phase compositions are normally buffered to these lines; the buffering capacity of carbonates is much greater than that of amphibole and phlogopite. Near ...

D-(-)-ribose was subjected to oxidation with equimolar amounts of H20 2/Fe2+ and 13-hydroperoxy-9-c/s-l l-fra/75-octadecadienoic acid/Fe2+. Smaller carbohydrates, carbonyl compounds, hydroxy acids and polyols were produced. Identification of carbonyl compounds was achieved by trapping with pentafluorobenzylhydroxylamine hydrochloride (PFBHA-HC1). All products were identified by GC/MS after deri...

abstract the theory of international tax competition suggests that governments attempt to attract mobile capital bases by undercutting the foreign capital tax rate. an analysis of the role that state capacity plays in tax policymaking under international pressures is, however, missing. the central contribution of our study is to highlight the importance of the interaction between state capacity...