نتایج جستجو برای: bismuth nanoparticles

تعداد نتایج: 113562  

2003
FRANKLIN D. HARDCASTLE

A new method is presented for interpreting the Raman spectra of bismuth oxides. The method relies on empirical relations between bismuth-oxygen (Bi-0) bond lengths, bond strengths, and Raman stretching frequencies. A least-squares exponential fit of crystallographically determined Bi-0 bond lengths and Raman stretching frequencies is presented along with a relation between Bi-0 bond strengths, ...

2014
Paweł Ramos Barbara Pilawa

Complex of bismuth, an anti-inflammatory drug, was studied by EPR spectroscopy. The aim of this study was to determine concentrations and properties of free radicals formed during thermal sterilization of bismuth subgallate according to pharmacopoeia norms to optimize its sterilization process. Different temperatures (160°C, 170°C, and 180°C) and times (120 minutes, 60 minutes, and 30 minutes) ...

Journal: :Molecules 2014
Donal M Keogan Darren M Griffith

: Bismuth compounds have been used extensively as medicines and in particular for the treatment of gastrointestinal ailments. In addition to bismuth's well known gastroprotective effects and efficacy in treating H. pylori infection it also has broad anti-microbial, anti-leishmanial and anti-cancer properties. Aspects of the biological chemistry of bismuth are discussed and biomolecular targets ...

Journal: :The Journal of Cell Biology 1963
Peter Albersheim Ursula Killias

Evidence is presented to show that bismuth combines in vitro with the phosphate of nucleic acids in a manner similar to its reaction with inorganic phosphate. When tested under similar conditions, protein exhibited no attraction for bismuth. The results of the in vitro experiments, which are of interest within themselves, may be indirectly applicable to in vivo staining. Dividing cells of onion...

2013
Juan Li Fei Jiang Bo Yang Xiao-Rong Song Yan Liu Huang-Hao Yang Dai-Rong Cao Wen-Rong Shi Guo-Nan Chen

Employing theranostic nanoparticles, which combine both therapeutic and diagnostic capabilities in one dose, has promise to propel the biomedical field toward personalized medicine. Here we investigate the theranostic properties of topological insulator bismuth selenide (Bi2Se3) in in vivo and in vitro system for the first time. We show that Bi2Se3 nanoplates can absorb near-infrared (NIR) lase...

2016
Liang Bian Hai-long Li Hai-liang Dong Fa-qin Dong Mian-xin Song Li-sheng Wang Wen-ping Hou Lei Gao Xiao-yan Zhang Tian-liang Zhou Guang-ai Sun Xin-xi Li Lei Xie

Ferrites-bismuth ferrite is an intriguing option for medical diagnostic imaging device due to its magnetoelectric and enhanced near-infrared fluorescent properties. However, the embedded XFO nanoparticles are randomly located on the BFO membranes, making implementation in devices difficult. To overcome this, we present a facile bio-approach to produce XFe2O4-BiFeO3 (XFO-BFO) (X = Cr, Mn, Co, or...

Journal: :Gut 1988
H Humphreys S Bourke C Dooley D McKenna B Power C T Keane E C Sweeney C O'Moráin

This study investigated the effect of colloidal bismuth subcitrate and cimetidine on Campylobacter pylori in peptic disease. In 74% of 135 patients with peptic disease diagnosed at endoscopy C pylori was detected before treatment. Compared with cimetidine, colloidal bismuth subcitrate significantly decreased the incidence of C pylori after six weeks of treatment (p less than 0.001). In the coll...

2010
Kelsey A. Collier David P. Belanger Andrew LaForge

Effect of Bismuth Doping on the Magnetic Properties of Rare-Earth Orthoferrites by Kelsey A. Collier The purpose of this experiment was to investigate the magnetic properties of bismuth-doped rare-earth orthoferrites, prompted by scientific interest in and the possible device applications of multiferroics. The magnetic susceptibility of single-crystal samples of pure and bismuth-doped orthoferr...

2010
K. F. Cai L. Wang J. L. Yin C. W. Zhou

In order to synthesize Bi2Se3 nanopowders by a solvothermal synthesis method, ethylenediamine, dimethylformamide, acetone, absolute ethanol, and deionized water were respectively used as a solvent, using BiCl3 and elemental Se powders as starting materials and KBH4 as a reductant at 180 C for different times. X-ray diffraction was used for examining the phase composition of the products. The re...

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