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Xenon analysis in petroleum
(1995)
We report here the development of our method for measurement of the elemental and isotopic composition of xenon in petroleum. The method consists of three distinct stages: ( 1 ) the complete oxidation of petroleum; (2) ...
Anion complexation by neutral Lewis acidic host molecules containing tin
(1989)
A family of synthetic host molecules have been prepared, ranging in structural complexity from spiro-annelated monocycles 16 to symmetric bicycles 12 and ditopic tricycles 14. The neutral host molecules contain either two ...
Structural chemistry of binary and ternary hafnium-rich tellurides
(1995)
While ternary group V tellurides have received much attention recently, the chemistry of the group IV transition metal tellurides, especially that of hafnium, has remained virtually unexplored. Brewer's ideas concerning ...
A study of small volatile organic compounds with PDMS
(1994)
Macfarlane first made the intriguing observation that fission fragment impacts on solid organics can desorb ionized nonvolatile molecules for mass analysis. This technique is called plasma desorption mass spectrometry ...
The formation, characterization, and reactivity of models for the active intermediates of horseradish peroxidase and cytochrome P-450 monoxygenases
(1988)
Combination of meso-[tetrakis(2,6-dichlorophenyl)porphinato]iron perchlorate with pentafluoroiodosobenzene, m-chloroperbenzoic acid, or ozone in acetonitrile at -35°C yields a green porphyrin-oxene adduct. This species, ...
A study of the transport properties of perfluorosulfonate ionomers using microelectrodes
(1988)
Chronoamperometry at microelectrodes (10 μm to 0.5 mm in diameter) is a powerful and convenient technique for the determination of apparent diffusion coefficients and concentrations of electroactive cations ion-exchanged ...
A study of the crystal lattice effects in the ¹⁴⁹Sm(n, [alpha]) ¹⁴⁶Nd reaction using thermal neutrons
(1973)
The effect of chemical form and temperature on alpha decay rates of the excited states of ¹⁵⁰Sm produced from thermal neutron capture at 0.096 eV by ¹⁴⁹Sm were studied. Targets of enriched ¹⁴⁹Sm as samarium oxide, samarium ...
The nature of the active site for the isomerization of 1-butene over magnesium oxide
(1971)
The nature of the reaction of 1-butene over MgO has been investigated. The isomerization rate at 26°C was measured in a flow system as a function of the catalyst pretreatment temperature which was varied from 300° to 900°C. ...
Several model systems for nonheme iron-sulfur proteins
(1972)
The stability and unusual electronic properties of the sulfur coordinated iron atoms in nonheme iron-sulfur proteins appear to be related to the nature of iron-sulfur bonding involving the sulfhydryl groups of the proteins ...