نتایج جستجو برای: phenyl boron extraction

تعداد نتایج: 208013  

Journal: :journal of nanostructures 2014
k. saberyan n. s. mazhari m. rahiminezhad-soltani m. a. mohsen

the atmospheric pressure chemical vapor synthesis (apcvs) route is a process that can be used for the synthesis of doped-nanocrystalline powders with very small crystallite sizes having a narrow particle size distribution and high purity. in this study, apcvs technique was used to prepare boron-doped titania nanopowders. the effects of temperature, borate flow rate and water flow rate on the am...

Journal: :Biochimica et biophysica acta 2001
N V Ralston C D Hunt

There is evidence that boron has a physiological role in animals and humans, but the search for boron binding biomolecules has been difficult because useful radioactive boron isotopes do not exist. To overcome this limitation we used capillary electrophoresis to identify and quantify boron binding to biomolecules by detecting the negative charge boron imparts to ligands. The effect of molecular...

Journal: :Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements 2009
Forrest H Nielsen Barbara J Stoecker

An experiment was performed to determine whether boron deprivation would adversely affect vertebra (trabecular) bone microarchitecture, and whether any adverse effect would be modified by dietary fatty acid composition. Female rats were fed diets containing 0.1mg (9 micromol) boron/kg in a factorial arrangement with variables of supplemental boron at 0 (boron-deprived) or 3 (boron-adequate) mg ...

2015
Akie Shimotohno Naoyuki Sotta Takafumi Sato Micol De Ruvo Athanasius F.M. Marée Verônica A. Grieneisen Toru Fujiwara

Boron, an essential micronutrient, is transported in roots of Arabidopsis thaliana mainly by two different types of transporters, BORs and NIPs (nodulin26-like intrinsic proteins). Both are plasma membrane localized, but have distinct transport properties and patterns of cell type-specific accumulation with different polar localizations, which are likely to affect boron distribution. Here, we u...

Journal: :Science 2015
Andrew J Mannix Xiang-Feng Zhou Brian Kiraly Joshua D Wood Diego Alducin Benjamin D Myers Xiaolong Liu Brandon L Fisher Ulises Santiago Jeffrey R Guest Miguel Jose Yacaman Arturo Ponce Artem R Oganov Mark C Hersam Nathan P Guisinger

At the atomic-cluster scale, pure boron is markedly similar to carbon, forming simple planar molecules and cage-like fullerenes. Theoretical studies predict that two-dimensional (2D) boron sheets will adopt an atomic configuration similar to that of boron atomic clusters. We synthesized atomically thin, crystalline 2D boron sheets (i.e., borophene) on silver surfaces under ultrahigh-vacuum cond...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1387

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

Journal: :Small methods 2023

Back Cover In article number 2201341, Sung Gap Im, Yongho Joo, and co-workers demonstrate the successful separation of nanotubular boron nitrides from synthetic mixtures via an aqueous extraction protocol. The method utilizes selective partitions into thermodynamically driven phases polymers. features simplicity, cost-effectiveness, scalability, with resulting product demonstrating a liquid cry...

Journal: :Anticancer research 2003
Yasushi Shibata Akira Matsumura Tetsuya Yamamoto Hiroyoshi Akutsu Susumu Yasuda Kei Nakai Tadao Nose Kazuyoshi Yamamoto Hiroaki Kumada Naohiko Hori Shinichi Ohtake

BACKGROUND In boron neutron capture therapy, blood boron concentration is the key factor to calculate radiation dose, however, blood sampling is difficult during neutron irradiation. MATERIALS AND METHODS The prediction of blood boron concentrations for BNCT treatment planning has been prospectively investigated using patient data obtained at first craniotomy after the infusion of a low dose ...

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