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Showing 1-30 of 34 results for "204315" within Papers
Synthetic studies on pseudo-dimeric Lycopodium alkaloids: total synthesis of complanadine B.
James N Newton et al.
Angewandte Chemie (International ed. in English), 52(6), 1726-1730 (2013-01-12)
Gary S Bañuelos et al.
Plant physiology, 155(1), 315-327 (2010-11-10)
The organ-specific accumulation, spatial distribution, and chemical speciation of selenium (Se) were previously unknown for any species of cactus. We investigated Se in Opuntia ficus-indica using inductively coupled plasma mass spectrometry, microfocused x-ray fluorescence elemental and chemical mapping (μXRF), Se
Yuzhong Li et al.
Environmental science & technology, 40(24), 7919-7924 (2007-01-30)
Sulfur dioxide (SO2) and trace elements are all pollutants derived from coal combustion. This study relates to the simultaneous removal of SO2 and trace selenium dioxide (SeO2) from flue gas by calcium oxide (CaO) adsorption in the moderate temperature range
Surya Chattopadhyaya et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 89, 160-167 (2012-01-21)
The electronic spectrum of the selenium monoxide (SeO) molecule has been studied theoretically by using ab initio based multireference singles and doubles configuration interaction (MRDCI) methodology, which includes relativistic effective core potentials (RECP) and suitable Gaussian basis sets of the
T Paukert et al.
Die Pharmazie, 66(11), 894-898 (2011-12-30)
A set of human tumor cell lines was characterized in terms of the GPx isoenzymes GPx1, -2, -3 and -4. Semiquantitative PCR was used to investigate the GPx mRNA transcripts and the GPx activity was determined photometrically. As a result
Valerie Boissel et al.
Chemical communications (Cambridge, England), (11)(11), 1398-1400 (2009-03-05)
Bridgehead metallation is possible in a ketone having the welwistatin skeleton, and this facilitates installation of the isothiocyanate function present in the natural product, and also enables synthesis of remarkable bridgehead alkenes.
Imed Messaoudi et al.
Experimental and toxicologic pathology : official journal of the Gesellschaft fur Toxikologische Pathologie, 62(3), 281-288 (2009-05-26)
The aim of this study was to evaluate the potential benefit of combined treatment with zinc (Zn) and selenium (Se) in reversing cadmium (Cd)-induced oxidative stress in erythrocytes, compared to Se or Zn treatment alone in rats exposed to Cd.
Esra Orucoglu et al.
Journal of environmental management, 160, 30-38 (2015-06-18)
Usage of bentonite as a buffer material is suggested in radioactive waste repositories. Although bentonites have higher sorption ability to cations, they cannot adsorp anions due to negative surface charge. Nowadays, ongoing researches focus on increasing anion adsorption ability of
B I Ognjanović et al.
Physiological research, 57(3), 403-411 (2007-05-01)
The effects of selenium (Se) on antioxidant defense system in liver and kidneys of rats with cadmium (Cd)-induced toxicity were examined. Cd exposure (15 mg Cd/kg b.m./day as CdCl(2) for 4 weeks) resulted in increased lipid peroxidation (LP) in both
Ying Li et al.
Environmental pollution (Barking, Essex : 1987), 158(6), 2317-2323 (2010-03-05)
In this study, we present a general protocol for the making of surface-imprinted core-shell magnetic beads via reversible addition-fragmentation chain transfer (RAFT) polymerization using RAFT agent functionalized iron oxide nanoparticles as the chain transfer agent. The resulting composites were characterized
Zhangrong Lou et al.
Chemical communications (Cambridge, England), 49(24), 2445-2447 (2013-02-19)
Based on a novel strategy for modulating the fluorescence of selenide and selenoxide, we have designed and developed a reversible fluorescent probe for hypochloric acid. And the synthesis, characterization, fluorescence properties, as well as the biological applications in living cells
Vijay P Singh et al.
Chemistry, an Asian journal, 6(6), 1431-1442 (2011-05-11)
The syntheses of selenenate/seleninate esters and related derivatives by aromatic nucleophilic substitution (S(N)Ar) reactions of 2-bromo-3-nitrobenzylalcohol (13) and 2-bromo-3-nitrobenzaldehyde (17) with Na(2)Se(2)/nBuSeNa are described. The reaction of 13 with Na(2)Se(2) at room temperature afforded 7-nitro-1,2-benzisoselenole(3H) (15) instead of the desired
Jing Yu et al.
Scientific reports, 5, 17109-17109 (2015-12-01)
Ternary metal dichalcogenides alloys exhibit compositionally tunable optical properties and electronic structure, and therefore, band gap engineering by controllable doping would provide a powerful approach to promote their physical and chemical properties. Herein we obtained ternary SnS(2-x)Se(x) alloys with tunable
Zoyne Pedrero et al.
Journal of chromatography. A, 1139(2), 247-253 (2006-12-05)
Selenium speciation in Se-enriched Lens esculenta grown in hydroponic culture containing inorganic selenium as Na(2)SeO(3) and Na(2)SeO(4) was performed. After 16 days of growth, the plants were collected and divided in two parts, roots and stems and then analysed to
Shu A Yao et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(30), 9179-9183 (2012-06-26)
Doing things by halves: The dimeric compound (Cp'Ni)(2)(μ(2)-Se(2)) (Cp' = 1,2,3,4-tetraisopropylcyclopentadienyl), shown in the scheme, was investigated by using low temperature X-ray crystallography and X-ray absorption spectroscopy. The Se K-edge energy strongly indicates a Se physical oxidation state of -1.5
Tetrahedron Letters, 34, 2979-2979 (1993)
Zhen Li et al.
Chemistry and physics of lipids, 158(1), 39-45 (2009-01-17)
Allylic hydroxylated derivatives of the C18 unsaturated fatty acids were prepared from linoleic acid (LA) and conjugated linoleic acids (CLAs). The reaction of LA methyl ester with selenium dioxide (SeO(2)) gave mono-hydroxylated derivatives, 13-hydroxy-9Z,11E-octadecadienoic acid, 13-hydroxy-9E,11E-octadecadienoic acid, 9-hydroxy-10E,12Z-octadecadienoic acid and
Yu-Wei Chen et al.
Chemosphere, 74(8), 1079-1084 (2008-12-09)
The possible abiotic reduction of selenite to form elemental Se was studied under controlled conditions in the presence of ferrous iron. The reduction of selenite and formation of Se (0) was found to be a surface-mediated reaction by iron oxides.
Takao Tobe et al.
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry, 20(4), 687-694 (2015-03-19)
Selenium (Se) is an essential antioxidative micronutrient but can exert cancer-selective cytotoxicity if the nutritional levels are too high. Selenodiglutathione (GSSeSG) is a primary Se metabolite conjugated with two glutathione (GSH) moieties. GSSeSG has been suggested to be an important
M Teodorczyk et al.
Cell death and differentiation, 22(7), 1192-1202 (2015-01-24)
Cancer stem cells (CSCs) have been implicated in the initiation and maintenance of tumour growth as well as metastasis. Recent reports link stemness to epithelial-mesenchymal transition (EMT) in cancer. However, there is still little knowledge about the molecular markers of
Silvia Lampis et al.
Environmental science and pollution research international, 16(6), 663-670 (2008-12-24)
Selenium is a trace metalloid of global environmental concern. The boundary among its essentiality, deficiency, and toxicity is narrow and mainly depends on the chemical forms and concentrations in which this element occurs. Different plant species-including Brassica juncea-have been shown
Christopher L Rowe et al.
Archives of environmental contamination and toxicology, 60(2), 336-342 (2010-09-30)
Selenium (Se) and vanadium (V) are contaminants commonly found in aquatic systems affected by wastes derived from fossil fuels. To examine their effects on a widely distributed species of amphibian, we exposed gray tree frogs (Hyla versicolor) to Se (as
Ji-Ming Song et al.
Langmuir : the ACS journal of surfaces and colloids, 23(13), 7321-7327 (2007-05-26)
High-yield synthesis of bamboo-raft-like single-crystalline selenium superstructures has been realized for the first time via a facile solvothermal approach by reducing SeO2 with ethylene alcohol in the presence of cellulose acetate. The formation of a raftlike superstructure with various forms
Maria Barsukova-Stuckart et al.
Inorganic chemistry, 51(24), 13214-13228 (2012-12-01)
A total of 16 discrete polyoxopalladates(II) [MO(8)Pd(II)(12)L(8)](n-), with a metal ion M encapsulated in a cuboid-shaped {Pd(12)O(8)L(8)} cage, have been synthesized: the phenylarsonate-capped series (1) L = PhAsO(3)(2-), M = Sc(3+) (ScPhAs), Mn(2+) (MnPhAs), Fe(3+) (FePhAs), Co(2+) (CoPhAs), Ni(2+) (NiPhAs)
Huaibin Shen et al.
Dalton transactions (Cambridge, England : 2003), 39(47), 11432-11438 (2010-10-27)
Here we report a low-cost and "green" phosphine-free route for the size- and shape-controlled synthesis of high-quality zinc blende (cubic) ZnSe nanocrystals. To avoid the use of expensive and toxic solvents such as trioctylphosphine (TOP) or tributylphosphine (TBP), SeO(2) was
Shaoxuan Yu et al.
Nanotechnology, 26(14), 145703-145703 (2015-03-19)
Selenium nanoparticles (Se NPs) possess well-known excellent biological activities and low toxicity, and have been employed for numerous applications except as inhibitors to protein glycation. Herein, the present study is carried out to investigate the inhibitory effect of Se NPs
Z T Zhang et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 25(3), 035702-035702 (2012-12-15)
We report on the investigation of Co and Cu substitution effects on superconductivity and magnetism in Fe(1+y)Te(0.6)Se(0.4) single crystals. The parent Fe(1.01)Te(0.59)Se(0.41) shows a nodeless bulk superconductivity as revealed in heat capacity measurement, which is gradually suppressed by either Co
Haiying Luo et al.
Colloids and surfaces. B, Biointerfaces, 94, 304-308 (2012-03-02)
In vitro antiproliferative effects of selenium nanoparticles (nanoSe(0), 10-40 μmol/L) on HeLa (human cervical carcinoma) cells and MDA-MB-231 (human breast carcinoma) cells were examined by optical microscopic inspection and MTT assay in the present study. The nanoSe(0) effectively inhibited the
Yifeng Shen et al.
PloS one, 10(6), e0129689-e0129689 (2015-06-10)
A novel europium ligand 2,2',2'',2'''-(4,7-diphenyl-1,10-phenanthroline-2,9-diyl) bis (methylene) bis (azanetriyl) tetra acetic acid (BC-EDTA) was synthesized and characterized. It shows an emission spectrum peak at 610 nm when it is excited at 360 nm, with a large Stock shift (250 nm).
Mojtaba Shakibaie et al.
Pharmaceutical biology, 51(1), 58-63 (2012-10-06)
In the present investigation, acute and subacute toxicity of the biogenic Se nanoparticles (Se NPs) has been reported. To characterize the Se NPs produced by a bacterium species and to evaluate their toxicity and impact on clinical chemistry and hematological
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