منابع مشابه
Boron Sheets and Boron Nanotubes
Based on an ab initio study, we present a structure model for a broad boron sheet, which is the precursor of boron nanotubes. Furthermore we could show that, in contrast to the armchair types, zigzag boron nanotubes have no surface tension (strain energy). As result, we predict that boron nanotubes will exhibit a chirality dependent stability, something that is unique among all nanotubular mate...
متن کاملDetermination of Microgram Quantities of Inorganic Boron in Mammalian Specimens.
A method is presented for estimation of inorganic boron in mammalian tissues, blood, cerebrospinal fluid, and urine. The procedure is simple and rapid, qualifying it particularly to meet needs in clinical chemistry. The mammalian tissues are first enzymatically digested and extracted; then the deproteinized extract is allowed to react with quinalizarin in concentrated sulfuric acid. The intensi...
متن کاملAutomatic system for the determination of boron in ceramic frits
An automatic system for the potentiometric determination of boron in ceramic frits was developed. The system includes a personal computer for instrumental control, data acquisition and processing, which allows up to 13 samples to be analysed sequentially with no human intervention.The system performance was tested on the titration of standard solutions, which it carried out with low errors and ...
متن کاملDetermination of total fluoride in boron-containing solutions.
We describe a pretreatment method before determining the total fluoride in solutions containing tetrafluoroborate ion (BF(4)(-)) with ion-selective electrodes (ISEs). BF(4)(-) was quantitatively converted to free fluoride by reacting with aluminum ions. The total fluoride concentration was then determined by ISE analysis without preliminary steam distillation using a tartrate- and tris(hydroxym...
متن کاملBoron aggregation in the ground states of boron-carbon fullerenes
Stephan Mohr,1 Pascal Pochet,2,* Maximilian Amsler,1 Bastian Schaefer,1 Ali Sadeghi,1 Luigi Genovese,2 and Stefan Goedecker1,† 1Institut für Physik, Universität Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland 2Laboratoire de Simulation Atomistique (L_Sim), SP2M, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble F-38054, France (Received 14 May 2013; revised manuscript received 17 December 2013; pu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1960
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.9.22