نتایج جستجو برای: boron compounds
تعداد نتایج: 243622 فیلتر نتایج به سال:
The properties, applications and methods for producing titanium vanadium diborides are considered. These oxygen-free refractory metal-like compounds. As a result, they characterized by high values of thermal electrical conductivity. Their hardness is relatively high. Titanium exhibit significant chemical resistance in aggressive environments. For these reasons, have found application modern tec...
BACKGROUND Boron neutron capture therapy (BNCT) is a unique particle radiation therapy based on the nuclear capture reactions in boron-10. We developed a novel boron-10 containing sodium borocaptate (BSH) derivative, 1-amino-3-fluorocyclobutane-1-carboxylic acid (ACBC)-BSH. ACBC is a tumor selective synthetic amino acid. The purpose of this study was to assess the biodistribution of ACBC-BSH an...
This reaction is endothermic, its threshold is 6.63 МeV, and the cross-section is 4·10 сm. Li nucleus with Т1/2=0.847 s is transformed into two α-particles of 1.5 МeV energy each, and one β-частицу of energy 13 МeV. The light yield in a plastic scintillator due to capture of thermal neutrons from α-particles and Li nuclei is equivalent to the yield from γ-quanta or electrons of energies from 65...
Alkylboron compounds are an important family of target molecules, serving as useful intermediates, as well as end points, in fields such as pharmaceutical science and organic chemistry. Facile transformation of carbon-boron bonds into a wide variety of carbon-X bonds (where X is, for example, carbon, nitrogen, oxygen, or a halogen), with stereochemical fidelity, renders the generation of enanti...
Pure borax and various boron compounds are produced from the solutions in which tincal is dissolved with various reagents. Economically important boron compounds such as boric acid, borax, boric oxide, and refined hydrated sodium borates and perborates are produced from boron-containing ores. The production of boric acid by using nitric acid from tincal is more advantageous because it evalu...
The world pottery history is replete with different shapes and designs as well as various technical ways of firing and decorating. The purpose of this study is to evaluate the effect of this reducing firing on different color oxides in two alkaline-boron and lead-boron glaze bases. The question raised in this study is that what effects do the different bases of lead-boron and alkali-boron glaze...
Ant control is difficult in systems even where a variety of control strategies and compounds are allowed; in sensitive places such as hospitals, where there are often restrictions on the methods and toxicants to be applied, the challenge is even greater. Here we report the methods and results of how we faced this challenge of controlling ants in a pediatric hospital using baits. Our strategy wa...
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