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Showing 1-30 of 33 results for "199478" within Papers
V V Dvoyrin et al.
Optics express, 19(9), 7992-7999 (2011-06-07)
A novel all-fiber laser based on a highly GeO2-doped dispersion-shifted Tm-codoped fiber, pumped at 1.56 µm wavelength and lasing at 1.862 µm wavelength with a slope efficiency up to 37% was demonstrated. The single-mode Tm-doped fiber with the 55GeO2-45SiO2 core
M Gunji et al.
Nanotechnology, 23(38), 385603-385603 (2012-09-06)
We report on the directed synthesis of germanium oxide (GeO(x)) nanowires (NWs) by locally catalyzed thermal oxidation of aligned arrays of gold catalyst-tipped germanium NWs. During oxygen anneals conducted above the Au-Ge binary eutectic temperature (T > 361 °C), one-dimensional
P. M. Lambert
Inorganic chemistry, 37(6), 1352-1357 (2001-10-24)
The gel chemistry of germanium is explored through the formation and composition of a hydrous metal oxide precursor gel used in the preparation of the HfGeO(4) and HfGeO(4):Ti X-ray phosphors. The enhanced solubility of hexagonal GeO(2) in dilute ammoniacal solutions
Z Oláh et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 122, 111-115 (2017-01-29)
A high-performance liquid chromatography (HPLC) device equipped with an anion exchange column was used to isolate nca
Y-J Cho et al.
The Journal of chemical physics, 129(16), 164117-164117 (2008-12-03)
The interfacial reaction of hafnium-silicate [(HfO(2))(x)(SiO(2))(1-x), x=0.5,0.7] thin films grown on Ge(001) by atomic layer deposition was investigated using x-ray photoelectron spectroscopy and medium energy ion scattering spectroscopy. According to the peak changes in Hf 4f and Ge 3d, the
Akihiro Kobayashi et al.
The Journal of toxicological sciences, 34(3), 295-303 (2009-06-02)
Recently, tellurium (Te), antimony (Sb) and germanium (Ge) have been used as an alloy in phase-change optical magnetic disks, such as digital versatile disk-random access memory (DVD-RAM) and DVD-recordable disk (DVD-RW). Although these metalloids, the so-called "exotic" elements, are known
Isao Tsutsui et al.
PloS one, 10(4), e0124997-e0124997 (2015-04-22)
The unique beauty of spherical aggregation forming algae has attracted much attention from both the scientific and lay communities. Several aegagropilous seaweeds have been identified to date, including the plants of genus Cladophora and Chaetomorpha. However, this phenomenon remains poorly
Jun Wang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 72(1), 41-45 (2008-11-18)
The Eu(3+) ion was introduced into Er(3+) doped Bi(2)O(3)-GeO(2)-Ga(2)O(3)-Na(2)O (BGGN) glasses to improve the 1.5 microm band emission. As a function of Eu(2)O(3) doped content, we observed the increase in non-radiative decay rate of Er(3+) not only (4)I(11/2) energy level
Ming-Hsing Lin et al.
International journal of radiation biology, 85(3), 214-226 (2009-03-20)
The aim of this work is to compare the radiosensitizing effect between organic and inorganic germanium compounds and to investigate whether nanometer-sized germanium particles can act as radiosensitizers. Bis (2-carboxyethylgermanium) sesquioxide (Ge-132), germanium oxide (GeO(2)) and germanium nanoparticles were used
Jiaqiang Wang et al.
Chemical communications (Cambridge, England), 46(29), 5250-5252 (2010-06-25)
Adding a small amount of commercial GeO(2) into aqueous suspension significantly enhanced the photocatalytic activity of titania-based photocatalysts for the degradation of dyes.
Moon Kee Choi et al.
Journal of nanoscience and nanotechnology, 12(1), 623-628 (2012-04-25)
Improving optical property is critical for optimizing the power conversion efficiency of organic solar cells. In the present research, we show that modification of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) layer with GeO2 leads to 15% improvement of power conversion efficiency in a
Katsuhiko Yokoi et al.
Regulatory toxicology and pharmacology : RTP, 52(2), 169-173 (2008-08-06)
So-called germanium 'health' products including dietary supplements, cosmetics, accessories, and warm bath service containing germanium compounds and metalloid are popular in Japan. Subchronic and chronic oral exposure of germanium dioxide (GeO(2)), popular chemical form of inorganic germanium causes severe germanium
Shenglei Yu et al.
Journal of fluorescence, 20(3), 745-751 (2010-03-06)
This paper reports on the spectroscopic properties and energy transfer analysis of Tm(3+)-doped BaF(2)-Ga(2)O(3)-GeO(2)-La(2)O(3) glasses with different Tm(2)O(3) doping concentrations (0.2, 0.5, 2.0, 2.5, 3.0, 3.5, 3.5, 4.0 wt%). Mid-IR fluorescence intensities in the range of 1,300 nm-2,200 nm have
A Orera et al.
Dalton transactions (Cambridge, England : 2003), 40(15), 3903-3908 (2010-10-05)
High oxygen content apatite germanates, La(10)Ge(6-x)W(x)O(27+x), have been prepared by doping on the Ge site with W. In addition to increasing the oxygen content, this doping strategy is shown to result in stabilisation of the hexagonal lattice, and yield high
Li Z Pei et al.
Recent patents on nanotechnology, 6(1), 44-59 (2011-10-26)
Ge nanowires exhibit wide application potential in the fields of nanoscale devices due to their excellently optical and electrical properties. This article reviews the recent progress and patents of Ge nanowires. The recent progress and patents for the synthesis of
Ming Wei et al.
Sheng wu gong cheng xue bao = Chinese journal of biotechnology, 26(3), 371-377 (2010-06-04)
To solve the problem of low growth rate and metabolism level in suspension cultures of protocorm-like bodies (PLBs) of Dendrobium huoshanense. The effects of germanium on PLB proliferation and accumulation of polysaccharides together with nutrient utilization were investigated and the
Philip S Salmon et al.
Physical chemistry chemical physics : PCCP, 15(37), 15286-15308 (2013-08-14)
The structure of several network-forming liquids and glasses is considered, where a focus is placed on the detailed information that is made available by using the method of neutron diffraction with isotope substitution (NDIS). In the case of binary network
Ruth I J Amos et al.
Angewandte Chemie (International ed. in English), 53(42), 11275-11279 (2014-08-30)
A robust catalyst for the selective dehydrogenation of formic acid to liberate hydrogen gas has been designed computationally, and also successfully demonstrated experimentally. This is the first such catalyst not based on transition metals, and it exhibits very encouraging performance.
E A Anashkina et al.
Optics express, 20(24), 27102-27107 (2012-11-29)
We report generation of femtosecond optical pulses tunable in the 1.6-2.5 μm range using GeO2-doped core silica-cladding fibers. Optical solitons with a duration of 80-160 fs have been measured by the FROG technique in the 2-2.3 μm range. To the
Xin-ben Zhang et al.
Optics express, 20(18), 19799-19805 (2012-10-06)
A GeO2 doped triangular-core photonic-crystal fiber (PCF) is designed and fabricated to allow the generation of a hollow beam through a nonlinear-optical transformation by femtosecond pulses at 1040 nm from a high power Yb-doped PCF laser oscillator. The hollow beam
Chuang-Hao Lin et al.
Toxicology, 256(1-2), 110-117 (2008-12-09)
The semiconductor element, germanium (Ge), is essential for the manufacture of modern integrated circuits. Because of its anti-tumor and immunomodulative effects, Ge-containing compounds are also used as health-promoting ingredients in food. However, some histological studies have shown the toxic effects
Ahmad Nazrul Rosli et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1251-1255 (2011-05-17)
We have calculated the vibrational frequencies of clusters of atoms from the first principles by using the density-functional theory in the local density approximation (LDA). We are also able to calculate the electronic binding energy for all of the clusters
Yanyan Guo et al.
Optics letters, 37(2), 268-270 (2012-08-03)
The 2.7 μm emission properties in Er3+-doped bismuthate (Bi2O3-GeO2-Ga2O3-Na2O) glass were investigated in the present Letter. An intense 2.7 μm emission in Er3+-doped bismuthate glass was observed. It is found that Er3+-doped bismuthate glass possesses high spontaneous transition probability A
Zita Oláh et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 149, 75-82 (2019-04-29)
The radiochemical separation of n.c.a. arsenic on its own or for radio-labelling purposes usually involves the issue of reducing arsenic(V). Numerous approaches for reducing pentavalent arsenic have been examined. A novel HPLC method has also been presented for accessing the
Cen Wang et al.
Nanotechnology, 22(15), 155706-155706 (2011-03-11)
Size-tunable GeO₂ nanocubes were initially prepared by a modified sono-assisted reverse micelle method and then functionalized with an amino-terminated silanizing agent. Subsequently, gold decorated GeO₂ nanocomposites were prepared at pH ≈ 7 and 80 °C. It was found that well-dispersed gold
Sarah L Sewell et al.
Dalton transactions (Cambridge, England : 2003), (29)(29), 3857-3865 (2008-07-17)
Biomimetic synthesis is emerging as an advantageous alternative to the harsh synthetic conditions traditionally used in metal oxide syntheses techniques. Silaffins, proteins from the C. fusiformis diatom, form silica in an aqueous environment under benign conditions. Amine terminated PAMAM and
Nadia Katir et al.
Biomacromolecules, 10(4), 850-857 (2009-03-20)
New classes of amphiphilic polyesters were prepared from metallated (Si, Ge) fatty methyl ester (FAME) precursors and poly(tetramethylene oxide) glycol. Hydrosilylation of 10-undecenoic methyl ester by tetramethyldisiloxane occurred at 80 degrees C in the presence of Karstedt's catalyst, and hydrogermylation
Small bowel perforation by a germanium stone.
Ji Young Jang et al.
The American surgeon, 79(4), E145-E146 (2013-04-12)
Leonardo De Boni et al.
Optics express, 20(6), 6844-6850 (2012-03-16)
This work reports on the spectral dependence of both nonlinear refraction and absorption in lead-germanium oxide glasses (PbO-GeO₂) containing silver nanoparticles. We have found that this material is suitable for all-optical switching at telecom wavelengths but at the visible range
Anjum Khanam et al.
Food chemistry, 194, 1293-1299 (2015-10-17)
Selenium (Se) is an essential nutrient with diverse physiological functions. The selenium content of commonly consumed cereals, pulses and green leafy vegetables (GLV) was determined. Bioaccessibility of Se, and its organic forms selenomethionine (SeMet), and selenocysteine (SeCys2) was also examined
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