Results 211 to 220 of about 270 (258)
Some of the next articles are maybe not open access.
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
openaire +2 more sources
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
openaire +1 more source
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
openaire +2 more sources
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
openaire +2 more sources
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
openaire +2 more sources
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 ...
openaire +2 more sources
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 ...
openaire +2 more sources
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).
openaire +1 more source
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
openaire +2 more sources
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
openaire +2 more sources
Science, 2012
A complex with a boron-boron triple bond expands the range of genuine triple bonds known to chemists.
Gernot Frenking, Nicole Holzmann
openaire +1 more source
A complex with a boron-boron triple bond expands the range of genuine triple bonds known to chemists.
Gernot Frenking, Nicole Holzmann
openaire +1 more source
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.
openaire +1 more source
The structure of boron in boron fibres
Journal of Materials Science, 1983The structure of noncrystalline, chemically vapour-deposited boron fibres was investigated by computer modelling the experimentally obtained X-ray diffraction patterns. The diffraction patterns from the models were computed using the Debye scattering equation.
Jayant Bhardwaj, Aaron D. Krawitz
openaire +1 more source