Results 211 to 220 of about 68,370 (267)
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Determination of boron and nitrogen in boron nitride
Talanta, 1971Improved techniques are described for the determination of boron and nitrogen in pure boron nitride. Controlled fusion of boron nitride with sodium carbonate in a muffle furnace is followed by a potentiometric titration of the boric acid. A special quartz vessel is described for the determination of nitrogen.
S L, Erickson, F J, Conrad
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Oxidative addition of boron–boron, boron–chlorine and boron–bromine bonds to platinum(0)
Journal of Organometallic Chemistry, 1998Abstract The synthesis and spectroscopic characterisation of the new diborane(4) compounds B2(1,2-O2C6Cl4)2 and B2(1,2-O2C6Br4)2 are reported together with the diborane(4) bis-amine adduct [B2(calix)(NHMe2)2] (calix=Butcalix[4]arene). B–B bond oxidative addition reactions between the platinum(0) compound [Pt(PPh3)2(η-C2H4)] and the diborane(4 ...
William Clegg +9 more
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Boron Analysis and Boron Imaging in BNCT
2012Boron neutron capture therapy (BNCT) strongly depends on the selective uptake of 10B in tumor cells and on the 10B distribution inside single cells. The chemical properties of boron and the need to discriminate different isotopes make the investigation of the concentration and distribution of 10B a challenging task.
Wittig, Andrea, Sauerwein, Wolfgang
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Journal of Dietary Supplements, 2008
To evaluate the scientific evidence on boron including expert opinion, folkloric precedent, history, pharmacology, kinetics/dynamics, interactions, adverse effects, toxicology, and dosing. This review serves as a clinical support tool.Electronic searches were conducted in nine databases, 20 additional journals (not indexed in common databases), and ...
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To evaluate the scientific evidence on boron including expert opinion, folkloric precedent, history, pharmacology, kinetics/dynamics, interactions, adverse effects, toxicology, and dosing. This review serves as a clinical support tool.Electronic searches were conducted in nine databases, 20 additional journals (not indexed in common databases), and ...
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Boron and Boron-Based Semiconductors
Physica Status Solidi (a), 1979A review is given on investigations of lattice structures, electrical and optical properties of boron and boron compounds (crystalline boron modifications and their compound analogs, rare-earth compounds, Asup(III)Bsup(V)compounds).
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Science, 2001
Metals formed from light elements are predicted to exhibit intriguing states of electronic order. Of these materials, those containing boron are of considerable current interest because of their relatively high superconducting temperatures. We have investigated elemental boron to very high pressure using diamond anvil cell electrical conductivity ...
M I, Eremets +3 more
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Metals formed from light elements are predicted to exhibit intriguing states of electronic order. Of these materials, those containing boron are of considerable current interest because of their relatively high superconducting temperatures. We have investigated elemental boron to very high pressure using diamond anvil cell electrical conductivity ...
M I, Eremets +3 more
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Boronizing in a boron trichloride atmosphere
Metal Science and Heat Treatment of Metals, 19601. The practicability of gas boronizing at 700–750° C in a BCl3H2 atmosphere was demonstrated. 2. The recommended boronizing procedure is: temperature −850° C, holding time-3–6 hrs., ratio of boron trichloride to hydrogen-about 0.05. 3.
M. A. Pchelkina, Yu. M. Lakhtin
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ChemPhysChem, 2005
AbstractA survey of novel classes of nanotubular materials based on boron is presented. Pure boron nanotubes are a consequence of a general Aufbau principle for boron clusters and solid boron phases, which postulates various novel boron materials besides the well‐known bulk phases of boron based on boron icosahedra.
Alexander, Quandt, Ihsan, Boustani
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AbstractA survey of novel classes of nanotubular materials based on boron is presented. Pure boron nanotubes are a consequence of a general Aufbau principle for boron clusters and solid boron phases, which postulates various novel boron materials besides the well‐known bulk phases of boron based on boron icosahedra.
Alexander, Quandt, Ihsan, Boustani
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Vapor transport of boron, boron phosphide and boron arsenide
Journal of Crystal Growth, 1967Abstract Small crystals of boron, boron phosphide and boron arsenide have been produced by chemical vapor transport using halogens as transporting reagent. In all cases the material transported from a higher to a lower temperature. The boron phosphide and boron arsenide produced were cubic while the boron was beta-rhom-bohedral.
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Science, 2012
A complex with a boron-boron triple bond expands the range of genuine triple bonds known to chemists.
Gernot Frenking, Nicole Holzmann
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A complex with a boron-boron triple bond expands the range of genuine triple bonds known to chemists.
Gernot Frenking, Nicole Holzmann
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