Results 271 to 280 of about 170,351 (318)
Some of the next articles are maybe not open access.
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
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
openaire +1 more source
Sintering of Boron and Boron Carbide
Journal of Solid State Chemistry, 2000An investigation of sintering kinetics of boron and boron carbide is presented. The influence of the powder size distribution on the temperature dependence of sintering, on reaching a high final density, and on gaining a homogeneous grain size has been shown.
G.I. Kalandadze +2 more
openaire +1 more source
Science, 1983
Sillimanite in six granulite-facies, kornerupine-bearing rocks contains 0.035 to 0.43 percent B2O3and 0.02 to 0.23 percent MgO (by weight). Substitution of boron for silicon and magnesium for aluminum is coupled such that the ratio of magnesium to boron is about 0.5.
Grew, Edward S., Hinthorne, James R.
openaire +2 more sources
Sillimanite in six granulite-facies, kornerupine-bearing rocks contains 0.035 to 0.43 percent B2O3and 0.02 to 0.23 percent MgO (by weight). Substitution of boron for silicon and magnesium for aluminum is coupled such that the ratio of magnesium to boron is about 0.5.
Grew, Edward S., Hinthorne, James R.
openaire +2 more sources
Journal of Renal Nutrition, 2005
Boron, the fifth element in the periodic table, is ubiquitous in nature. It is present in food and in surface and ocean waters, and is frequently used in industrial, cosmetic, and medical settings. Exposure to boron and related compounds has been recently implicated as a potential cause of chronic kidney disease in Southeast Asia.
Madeleine V, Pahl +2 more
openaire +2 more sources
Boron, the fifth element in the periodic table, is ubiquitous in nature. It is present in food and in surface and ocean waters, and is frequently used in industrial, cosmetic, and medical settings. Exposure to boron and related compounds has been recently implicated as a potential cause of chronic kidney disease in Southeast Asia.
Madeleine V, Pahl +2 more
openaire +2 more sources
2012
A basic overview of essential aspects of the very rich chemistry of boron is discussed to elucidate the structural behavior and chemical properties of boron-containing molecules. Some introductory elements are provided concerning the peculiar chemical properties of boron, which derive from its electronic configuration, bonding orbitals, and ...
Panza, L, PROSPERI, DAVIDE
openaire +2 more sources
A basic overview of essential aspects of the very rich chemistry of boron is discussed to elucidate the structural behavior and chemical properties of boron-containing molecules. Some introductory elements are provided concerning the peculiar chemical properties of boron, which derive from its electronic configuration, bonding orbitals, and ...
Panza, L, PROSPERI, DAVIDE
openaire +2 more sources