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The development and evaluation of coincidence counting TOF-MS
(1991)
Coincidence counting has been combined with time-of-flight mass spectrometry (TOF-MS) in a study of the relationships of secondary ions desorbed by keV and MeV energy primary ions. Secondary ions are in coincidence with ...
Enzymes in organic synthesis : aldolase-catalyzed reactions for the synthesis of unusual sugars
(1990)
Several aspects of the use of enzymes in organic synthesis have been explored. Fructose-1,6-diphosphate aldolase (FDP aldolase) is available commercially and has been cloned and overexpressed in E. coli. Both aldolases ...
Development of ²⁵²Cf plasma desorption mass spectrometry for high molecular weight protein analysis
(1991)
Studies were undertaken in instrumentation and methodology to advance the capability of [252]Cf-PDMS for high molecular weight protein analysis. Instrumentation was developed to reduce the background in [252]Cf-PDMS spectra ...
The construction, testing and performance of a Pb/scintillator calorimeter with fiber optic readout built for relativistic heavy ion studies
(1991)
A Pb/scintillator sampling calorimeter covering the pseudorapidity interval of n=0.83 to 4.20 has been designed and constructed for Experiment 814 of Brookhaven National Laboratory. The calorimeter uses wavelength shifting ...
Synthesis and characterization of sulfur-capped trinuclear molybdenum and tungsten clusters
(1992)
The synthesis of molybdenum and tungsten trinuclear clusters is presented. The clusters of interest contain a M3(μ3-S)(μ2-S2)3[^4+] core with nine terminal ligands, i. e. three bound to each metal center. The ligands ...
Self assembly of group 11 complexes with 2-mercaptothiazoline : their syntheses and reactions
(1992)
A series of butterfly-like complexes, containing in their cores either copper or silver atoms, has been prepared by addition of a Lewis base (PPh3, AsPh3, or py, where Ph = C6H5, and py = pyridine) to the insoluble precipitate ...
Enzymes in organic synthesis
(1992)
The synthetic utilities of enzymes as catalysts for asymmetric synthesis have been explored in several aspects. Fructose-1,6-diphosphate aldolase from rabbit muscle and E. coli, rhamnulose-1-phosphate aldolase and ...
Use of hydrothermal methods for the synthesis of metal molybdates, copper carboxylates and molybdenum phosphates
(1990)
In this work, hydrothermal reactions were studied as a synthetic method in three systems: metal molybdates, copper carboxylates and molybdenum phosphates. Different solvents were used in each system studied to determine ...
The chemical generation of superoxide ion, and its relative reactivity (versus hydroperoxide ion and hydroxide ion) with halocarbons, esters, and nitriles in aprotic media
(1990)
With dioxygen-saturated (1 atm, 2.1 mM) dimethyl sulfoxide solutions that contain aniline (1-15 mM), the addition of excess hydroxide ion (10:1 HO-/PhNH2) yields approximately two superoxide ions (O2-), one azobenzene, and ...
In situ studies of adsorption of inorganic anions on metallic electrodes
(1992)
The adsorption of HSO4-, Cl- and I- from aqueous solutions was examined using radiotracer, FTIR spectroscopy and ellipsometry techniques. Adsorption dependence was measured as a function of time, concentration and potential. ...