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266914

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Pulakesh Maity et al.
Organic letters, 15(24), 6246-6249 (2013-11-12)
α-Stannylated and α-iodinated enamides can easily be obtained by molybdenum-catalyzed regio- and stereoselective hydrostannation and subsequent tin-iodine exchange. These functionalized enamides are interesting building blocks for a wide range of cross-coupling reactions giving access to various types of α-substituted enamides.
Costanza Baldisserotto et al.
Plant physiology and biochemistry : PPB, 70, 387-395 (2013-07-09)
The aquatic plant Trapa natans L. is highly resistant to Mn and moderately resistant to Mo, mainly thanks to its ability to sequestrate the metals by chelation in the vacuole. Excess of Mn and Mo causes somewhat aspecific toxicity symptoms...
Stanley S Chou et al.
Journal of the American Chemical Society, 135(12), 4584-4587 (2013-03-12)
MoS2 is a two-dimensional material that is gaining prominence due to its unique electronic and chemical properties. Here, we demonstrate ligand conjugation of chemically exfoliated MoS2 using thiol chemistry. With this method, we modulate the ζ-potential and colloidal stability of...
Samar Al Sayegh Petkovšek et al.
Environmental monitoring and assessment, 186(7), 4261-4274 (2014-03-13)
The transfer of lead, cadmium, zinc, mercury, copper and molybdenum from soil to the tissues of small mammals inhabiting differently polluted areas in Slovenia was investigated. Metals were determined in soil samples and in the livers of 139 individuals of...
G Toncev et al.
European journal of neurology, 9(3), 221-226 (2002-05-03)
Several findings suggest lower levels of serum uric acid in multiple sclerosis (MS) patients. The aim of this study is to investigate relationships of uric acid serum levels in relapse-remitting (RR) MS patients with clinical activity of disease and blood-brain...
M Jake Pushie et al.
Inorganic chemistry, 52(6), 2830-2837 (2013-03-01)
Molybdenum K-edge X-ray absorption spectroscopy (XAS) has been used to probe the structure of a Mo(V) species that has been suggested to be a catalytic intermediate in the reaction of dimethyl sulfoxide (DMSO) reductase with the alternative substrate trimethylamine N-oxide...
Ya Yan et al.
Nanoscale, 5(17), 7768-7771 (2013-07-26)
In this work, a networked MoS2/CNT nanocomposite has been synthesized by a facile solvothermal method. The as-prepared sample exhibits high catalytic activity for electrocatalytic hydrogen evolution.
Humberto Terrones et al.
Scientific reports, 3, 1549-1549 (2013-03-27)
Although bulk hexagonal phases of layered semiconducting transition metal dichalcogenides (STMD) such as MoS2, WS2, WSe2 and MoSe2 exhibit indirect band gaps, a mono-layer of STMD possesses a direct band gap which could be used in the construction of novel...
Shigeyuki Kitamura et al.
Drug metabolism and pharmacokinetics, 21(2), 83-98 (2006-05-17)
Molybdenum hydroxylases, which include aldehyde oxidase and xanthine oxidoreductase, are involved in the metabolism of some medicines in humans. They exhibit oxidase activity towards various heterocyclic compounds and aldehydes. The liver cytosol of various mammals also exhibits a significant reductase...
Jian-Ming Lü et al.
Biochemical pharmacology, 86(9), 1328-1337 (2013-09-03)
Hyperuricemia, excess of uric acid in the blood, is a clinical problem that causes gout and is also considered a risk factor for cardiovascular disease. The enzyme xanthine oxidase (XO) produces uric acid during the purine metabolism; therefore, discovering novel...
Luis M Rubio et al.
Annual review of microbiology, 62, 93-111 (2008-04-24)
The iron-molybdenum cofactor (FeMo-co), located at the active site of the molybdenum nitrogenase, is one of the most complex metal cofactors known to date. During the past several years, an intensive effort has been made to purify the proteins involved...
Goran Gajski et al.
Biochimica et biophysica acta, 1840(1), 565-576 (2013-10-22)
The main objective of the present study was to investigate chemical composition and possible cyto/genotoxic potential of several medical implant materials commonly used in total hip joint replacement. Medical implant metal alloy (Ti6Al4V and CoCrMo) and high density polyethylene particles...
D G Barceloux
Journal of toxicology. Clinical toxicology, 37(2), 231-237 (1999-06-26)
Molybdenum does not exist naturally in the pure metallic form and of the 5 oxidation states (2-6) the predominant species are Mo(IV) and Mo(VI). Molybdenum rapidly polymerizes to a wide variety of complex polymolybdate compounds in solution. The vast majority...
Jie Chen et al.
Physical chemistry chemical physics : PCCP, 15(15), 5664-5669 (2013-03-12)
Phosphomolybdic acid-reduced graphene oxide (PMoA-rGO) nanocomposites are fabricated by a photochemical reduction method. They are characterized by ultraviolet-visible spectra, scanning electron microscope images, Fourier transform infrared spectroscopy, Raman spectra and X-ray photoelectron spectroscopy in order to confirm that oxygen-containing functional...
Sabine Goldberg
Environmental toxicology and chemistry, 33(10), 2172-2180 (2014-03-13)
Various chemical models of ion adsorption are presented and discussed. Chemical models, such as surface complexation models, provide a molecular description of anion adsorption reactions using an equilibrium approach. Two such models, the constant capacitance model and the triple layer...
Anna Panagiotidou et al.
Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 31(12), 2032-2039 (2013-08-24)
Widespread concern exists about adverse tissue reactions after metal-on-metal (MoM) total hip replacement (THR). Concerns have also been expressed with wear and corrosion of taper junctions in THR. We report the effect of surface finish and contact area associated with...
Jean L Johnson
Prenatal diagnosis, 23(1), 6-8 (2003-01-21)
Molybdenum cofactor deficiency and isolated sulfite oxidase deficiency are autosomal recessive inborn errors of metabolism with severe neurological symptoms resulting from a lack of sulfite oxidase activity. The deficiencies can be diagnosed prenatally by monitoring sulfite oxidase activity in chorionic...
V Calabrese et al.
Neurochemical research, 28(9), 1321-1328 (2003-08-27)
Recent studies suggest that NO and its reactive derivative peroxynitrite are implicated in the pathogenesis of multiple sclerosis (MS). Patients dying with MS demonstrate increased astrocytic inducible nitric oxide synthase activity, as well as increased levels of iNOS mRNA. Peroxynitrite...
Gang Li et al.
Journal of environmental sciences (China), 25(1), 144-154 (2013-04-17)
Element profile was investigated for their use to trace the geographical origin of rice (Oryza sativa L.) samples. The concentrations of 13 elements (calcium (Ca), potassium (K), magnesium (Mg), phosphorus (P), boron (B), manganese (Mn), iron (Fe), nickel (Ni), copper...
Sukirno Sukirno et al.
Journal of economic entomology, 106(6), 2364-2370 (2014-02-07)
The objective of this research was to evaluate artificial diets that can be used to successfully culture the atlas silk moth, Attacus atlas L. (Lepidoptera: Saturniidae) indoors. Four plant species were evaluated as the basic component of each diet, barringtonia...
Measurement of mobility in dual-gated MoS₂ transistors.
Michael S Fuhrer et al.
Nature nanotechnology, 8(3), 146-147 (2013-03-06)
P A LeWitt et al.
Neurology, 42(11), 2111-2117 (1992-11-01)
We used two analytic methods (a multichannel coulometric electrode array with high-performance liquid chromatography, and gas chromatography-mass spectrophotometry) to measure CSF dopamine (DA) and its metabolites in mildly affected, unmedicated subjects with Parkinson's disease (PD). The mean (+/- SD) concentration...
Rupert Purchase
Science progress, 96(Pt 1), 19-32 (2013-06-07)
Wilson's disease is a rare autosomal recessive disease characterised by the deposition of copper in the brain, liver; cornea, and other organs. The overload of copper inevitably leads to progressive liver and neurological dysfunction. Copper overload in patients with Wilson's...
John H Enemark et al.
Dalton transactions (Cambridge, England : 2003), (29)(29), 3501-3514 (2006-07-21)
Sulfite oxidizing enzymes (SOEs) are physiologically vital and occur in all forms of life. During the catalytic cycle the five-coordinate square-pyramidal oxo-molybdenum active site passes through the Mo(v) state, and intimate details of the structure can be obtained from pulsed...
Haotian Wang et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(49), 19701-19706 (2013-11-20)
The ability to intercalate guest species into the van der Waals gap of 2D layered materials affords the opportunity to engineer the electronic structures for a variety of applications. Here we demonstrate the continuous tuning of layer vertically aligned MoS2...
Beatrice Bocca et al.
Annali dell'Istituto superiore di sanita, 41(2), 197-203 (2005-10-26)
The haematic concentration of 26 metals and the oxidative damage in 60 patients (20 males and 40 females) affected by Alzheimer's disease and 44 healthy individuals (33 males and 11 females) were compared. In patients, the following significant (p <...
Krystyna Pyrzynska
Analytica chimica acta, 590(1), 40-48 (2007-04-10)
Determination of molybdenum in different kinds of environmental samples is often a challenging task for analysts. Its concentration is usually very low and the sample matrix may cause serious interferences during measurement. Therefore, preconcentration and separation methods should be used...
Radioisotopes: The medical testing crisis.
Richard Van Noorden
Nature, 504(7479), 202-204 (2013-12-18)
Ralf R Mendel
Journal of experimental botany, 58(9), 2289-2296 (2007-03-14)
The transition element molybdenum (Mo) is an essential micronutrient for plants where it is needed as a catalytically active metal during enzyme catalysis. Four plant enzymes depend on molybdenum: nitrate reductase, sulphite oxidase, xanthine dehydrogenase, and aldehyde oxidase. However, in...
Felix Bulcke et al.
Nanotoxicology, 8(7), 775-785 (2013-07-31)
To test for consequences of an exposure of brain cells to copper oxide nanoparticles (CuO-NPs), we synthesised and characterised dimercaptosuccinate-coated CuO-NPs. These particles had a diameter of around 5 nm as determined by transmission electron microscopy, while their average hydrodynamic...
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