نتایج جستجو برای: tellurite glass

تعداد نتایج: 72741  

Journal: :Physica Scripta 2022

Abstract This manuscript introduces a unique tellurite core-based photonic crystal fiber (PCF) with silica clad and circular air holes, which manifests highly birefringent non-linear characteristics. Several optical features, such as birefringence (Br), nonlinear coefficients (NLC), dispersion (D), confinement loss (CL), material loss, etc are thoroughly analyzed explored by applying the finite...

Journal: :Journal of Materials Science 2022

Abstract Electrical properties of beryllium-alumino-tellurite glasses and glass–ceramics doped with iron ions were studied using impedance spectroscopy. The conductivity was measured over a wide frequency range from 10 mHz to 1 MHz the temperature 213 473 K. D.C. values showed correlation Fe-ion concentration ratio on different valence states in samples. On basis Jonscher universal dielectric r...

Journal: :Journal of medical microbiology 1993
P M Zadik P A Chapman C A Siddons

Potassium tellurite was assessed for the selection of verocytotoxigenic (VT+) Escherichia coli O157. MICs were higher for VT+ E. coli O157 than for other strains of E. coli and for Aeromonas spp. MacConkey medium containing sorbitol, tellurite and cefixime (TC-SMAC) permitted the growth of VT+ E. coli O157 and Shigella sonnei but partially or completely inhibited the growth of 67% of other stra...

Journal: :Applied sciences 2021

Characteristics of tellurite-tungstate-antimonate glasses containing heavy metal oxide were investigated in detail using two methods: the MCNPX Monte Carlo code and Phy-X/PSD platform. The influence Sm2O3, translocating with TeO2 at ratios 0.2, 0.5, 0.8, 1, 1.5 mol% on radiation shielding properties glasses, was set forth five glass structures determined according to (75-x)TeO2-15Sb2O3-10WO3-xS...

2017
Chris Maltman Lynda J. Donald Vladimir Yurkov

Erythromonas ursincola, strain KR99 isolated from a freshwater thermal spring of Kamchatka Island in Russia, resists and reduces very high levels of toxic tellurite under aerobic conditions. Reduction is carried out by a constitutively expressed membrane associated enzyme, which was purified and characterized. The tellurite reductase has a molecular weight of 117 kDa, and is comprised of two su...

Journal: :Journal of molecular biology 2011
Yun-Ru Pan Yuan-Chao Lou Alpay B Seven Josep Rizo Chinpan Chen

The tellurium oxyanion TeO(3)(2-) has been used in the treatment of infectious diseases caused by mycobacteria. However, many pathogenic bacteria show tellurite resistance. Several tellurite resistance genes have been identified, and these genes mediate responses to diverse extracellular stimuli, but the mechanisms underlying their functions are unknown. To shed light on the function of KP-TerD...

Journal: :Open Chemistry 2023

Abstract We report the role of chemical modifications on various gamma-ray attenuation properties four different tellurite glasses reinforced through WO 3 . The compositions and glass densities are used in terms determining some critical properties, such as linear mass coefficients, half value layer, effective atomic number values. Based rise density, it was determined that maximum concentratio...

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