Relevant bibliographies by topics / Bleu de molybdène

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  2. Dissertations / Theses

Academic literature on the topic 'Bleu de molybdène'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Bleu de molybdène"

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Nunes, Carla, Josep Usall, Neus Teixidó, Maribel Abadias, and Immaculada Viñas. "Improved Control of Postharvest Decay of Pears by the Combination of Candida sake (CPA-1) and Ammonium Molybdate." Phytopathology® 92, no. 3 (2002): 281–87. http://dx.doi.org/10.1094/phyto.2002.92.3.281.

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The potential enhancement of Candida sake (CPA-1) by ammonium molybdate to control blue and gray mold caused by Penicillium expansum and Botrytis cinerea, respectively, on Blanquilla pears was investigated. In laboratory trials, improved control of blue and gray molds was obtained with the application of ammonium molybdate (1, 5, 10, and 15 mM) alone or in combination with C. sake at 2 × 106 or 2 × 107 CFU ml-1 on Blanquilla pears stored at 20°C. In semicommercial trials at 1°C for 5 months, the efficacy of C. sake at 2 × 106 CFU ml-1 on reducing P. expansum and B. cinerea decay was enhanced m
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Ahmad, S. A., M. Y. Shukor, N. A. Shamaan, W. P. Mac Cormack, and M. A. Syed. "Molybdate Reduction to Molybdenum Blue by an Antarctic Bacterium." BioMed Research International 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/871941.

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A molybdenum-reducing bacterium from Antarctica has been isolated. The bacterium converts sodium molybdate or Mo6+to molybdenum blue (Mo-blue). Electron donors such as glucose, sucrose, fructose, and lactose supported molybdate reduction. Ammonium sulphate was the best nitrogen source for molybdate reduction. Optimal conditions for molybdate reduction were between 30 and 50 mM molybdate, between 15 and 20°C, and initial pH between 6.5 and 7.5. The Mo-blue produced had a unique absorption spectrum with a peak maximum at 865 nm and a shoulder at 710 nm. Respiratory inhibitors such as antimycin A
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Rahman, M. F., M. Rusnam, N. Gusmanizar, et al. "Molybdate-reducing and SDS-degrading Enterobacter sp. Strain Neni-13." Nova Biotechnologica et Chimica 15, no. 2 (2016): 166–81. http://dx.doi.org/10.1515/nbec-2016-0017.

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AbstractToxicants removal through microorganism’s action is intensely being sought due to economic reasons. The aim of this paper is to isolate a bacterium that is able to reduce molybdenum blue and at the same time can grow on the detergent Sodium Dodecyl Sulfate (SDS). Biochemical analysis resulted in a tentative identification of the bacterium as Enterobacter sp. strain Neni-13. Growth on SDS showed a 100 % removal at 800 mg/L SDS within 12 days. The removal of SDS from media was confirmed through Methylene Blue Active Substances Assay. Molybdenum reduction using sodium molybdate as a subst
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Othman, A. R., N. A. Bakar, M. I. E. Halmi, et al. "Kinetics of Molybdenum Reduction to Molybdenum Blue byBacillussp. Strain A.rzi." BioMed Research International 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/371058.

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Molybdenum is very toxic to agricultural animals. Mo-reducing bacterium can be used to immobilize soluble molybdenum to insoluble forms, reducing its toxicity in the process. In this work the isolation of a novel molybdate-reducing Gram positive bacterium tentatively identified asBacillussp. strain A.rzi from a metal-contaminated soil is reported. The cellular reduction of molybdate to molybdenum blue occurred optimally at 4 mM phosphate, using 1% (w/v) glucose, 50 mM molybdate, between 28 and 30°C and at pH 7.3. The spectrum of the Mo-blue product showed a maximum peak at 865 nm and a shoulde
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Thomas Rinder and Eric H. Oelkers. "On the colorimetric measurement of aqueous Si in the presence of organic ligands and common pH buffering agents." Mineralogical Magazine 78, no. 6 (2014): 1431–36. http://dx.doi.org/10.1180/minmag.2014.078.6.10.

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The effects of the presence of ten organic ligands and common pH buffering agents – acetate, oxalate, tartrate, citrate, phthalate, EDTA, carbonate, TRIS, phosphate and borate – on aqueous Si concentration measurements made using the common molybdate blue method were quantified. The concentrations of these additives ranged from 0.01 to 0.1 mol/kg in the measured aqueous solutions. Whereas measured Si concentrations were not affected by the presence of up to 0.1 mol/kg acetate, hydrogen phthalate or TRIS, the presence of 0.1 mol/kg of all other selected additives altered substantially the measu
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Kapoulas, Vassilios M., and George Th Tsangaris. "Optimization of Conditions for Accurate Phosphonate and Total Phosphorus Assay on Lipid Samples, in Conjunction with Thin-Layer Chromatography." Zeitschrift für Naturforschung C 41, no. 3 (1986): 263–68. http://dx.doi.org/10.1515/znc-1986-0304.

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The range of inorganic acid normalities for maximum color formation of the phosphomolybdenum- blue complex (under heating) increases by elevating the ammonium molybdate concentration, and at a ratio of molybdate molarity/acid normality equal to 10, there is maximum color development at any acid normality in the range 1-4 ɴ with either HClO4 or H2SO4 (or their mixtures). On the basis of these features a revised method is described for the accurate determination of phosphonate-P percent of total-P. on lipid extracts and on TLC bands. The color at the final step, in both cases, is developed under
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Ganesh, S., Fahmida Khan, M. K. Ahmed, P. Velavendan, N. K. Pandey, and U. Kamachi Mudali. "Spectrophotometric determination of trace amounts of phosphate in water and soil." Water Science and Technology 66, no. 12 (2012): 2653–58. http://dx.doi.org/10.2166/wst.2012.468.

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A simple spectrophotometric method has been developed for the determination of phosphate dissolved in soil and water. The method is based on the formation of phosphomolybdate with added ammonium molybdate followed by reduction with hydrazine in acidic medium. Orthophosphate and molybdate ions condense in acidic solution to give molybdophosphoric (phosphomolybdic) acid, which upon selective reduction (perhaps with hydrazinium sulphate) produces a blue colour, due to molybdenum blue of uncertain composition. The intensity of blue colour is proportional to the amount of phosphate. If the acidity
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Gusmanizar, Neni, Mohd Izuan Effendi Halmi, Rusnam Mansur, et al. "MOLYBDENUM-REDUCING AND AZO-DYE DECOLORIZING SERRATIA MARCESCENS STRAIN NENI-1 FROM INDONESIAN SOIL." Journal of Urban and Environmental Engineering 10, no. 1 (2016): 113–23. http://dx.doi.org/10.4090/juee.2016.v10n1.113-123.

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Heavy metals and organic xenobiotics including dyes are important industrial components with their usage amounting to the millions of tonnes yearly. Their presence in the environment is a serious pollution issue globally. Bioremediation of these pollutants using microbes with multiple detoxification capacity is constantly being sought. In this work we screen the ability of a molybdenum-reducing bacterium isolated from contaminated soil to decolorize various azo and triphenyl methane dyes. The bacterium reduces molybdate to molybdenum blue (Mo-blue) optimally at pH 6.0, and temperatures of betw
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Gusmanizar, Neni, Mohd Izuan Effendi Halmi, Rusnam Mansur, et al. "MOLYBDENUM-REDUCING AND AZO-DYE DECOLORIZING SERRATIA MARCESCENS STRAIN NENI-1 FROM INDONESIAN SOIL." Journal of Urban and Environmental Engineering 10, no. 1 (2016): 113–23. http://dx.doi.org/10.4090/juee.2016.v10n1.113123.

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Heavy metals and organic xenobiotics including dyes are important industrial components with their usage amounting to the millions of tonnes yearly. Their presence in the environment is a serious pollution issue globally. Bioremediation of these pollutants using microbes with multiple detoxification capacity is constantly being sought. In this work we screen the ability of a molybdenum-reducing bacterium isolated from contaminated soil to decolorize various azo and triphenyl methane dyes. The bacterium reduces molybdate to molybdenum blue (Mo-blue) optimally at pH 6.0, and temperatures of betw
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Lenoble, V. "Arsenite oxidation and arsenate determination by the molybdene blue method." Talanta 61, no. 3 (2003): 267–76. http://dx.doi.org/10.1016/s0039-9140(03)00274-1.

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Dissertations / Theses on the topic "Bleu de molybdène"

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Boucherle, Tom. "Développement de nouveaux outils de diagnostic de terrain pour une application au dosage de l'arsenic." Thesis, Limoges, 2018. http://www.theses.fr/2018LIMO0070.

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L’Organisation Mondiale de la Santé (OMS) a fixé en 1998 la concentration maximale en arsenic dans l’eau de consommation à 10 ppb (μg/L). Dans le monde, plus de 100 millions de personnes sont exposées à des concentrations supérieures à 50 ppb. La toxicité, l’omniprésence et la mobilité de l’arsenic entraînent la nécessité de pouvoir le doser immédiatement sur le terrain. Il existe actuellement deux méthodes de dosage de terrain commercialisées. La première, onéreuse, est basée sur la voltammétrie (> 7000 €). La seconde à environ 2 €/analyse se présente sous le format de bandelette. Elle per
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Laayadi, Bougrine. "Etude par résonance paramagnétique électronique des bronzes bleus de molybdène A0. 3MoO3 (A = K, Rb)." Grenoble 1, 1990. http://www.theses.fr/1990GRE10062.

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Nous avons etudie les composes a#0#. #3mo#1##xv#xo#3 (a=k, rb) par resonance paramagnetique electronique. Ces materiaux sont des conducteurs quasi unidimensionnels qui presentent une transition d'onde de densite de charge a 180 k. Pour les materiaux non dopes (x=0) nous etablissons que: a) les spectres sont dus a des ions mo#5#+ resultant d'ecarts a la stchiometrie. Seule une couche pres de la surface est responsable de la resonance observee; b) l'intensite des spectres depend fortement de l'histoire thermique et electrique de l'echantillon. Pour x=0, les spectres resultent de la coexistence d
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Veuillen, Jean-Yves. "Etude par spectroscopies Mossbauer et de photoémission en rayonnement ultra-violet des bronzes bleus de molybdène." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37601775f.

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Veuillen, Jean-Yves. "Etude par spectroscopie Mössbauer et de photoémission en rayonnement ultraviolet des bronzes bleus de molybdène A(0. 3)MoO3 (A = K, Rb)." Grenoble 1, 1986. http://www.theses.fr/1986GRE10146.

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Le bronze bleu a::(0,3)moo::(3) (a = k, rb) est un metal quasi-unidimensionnel a temperature ambiante qui presente une transition isolant-metal de type peierls a 183k. Etude de la structure de bandes dans la direction metallique par photoemission angulaire. Mesure de l'energie de liaison et du vecteur de fermi. Evolution thermique de l'interaction onde de densite de charge-impuretes, au voisinage de 100k, etudiee par spectrometrie moessbauer
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Girault, Sylvie. "Étude par diffraction des rayons X de l'onde de densité de charge dans les bronzes bleus de molybdène A₀. ₃ MoO₃ (A=K, Rb, T1)." Paris 11, 1987. http://www.theses.fr/1987PA112458.

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Le bronze bleu de molybdène, de formule générale A0. 3 MoO3, où A est un monovalent, présente vers 180K une instabilité de Peierls avec formation d'une onde de densité de charge et d'une distorsion structurale. D'un point de vue du transport électronique, cette instabilité se manifeste par une transition métal-semiconducteur. Dans la phase basse température, en utilisant la méthode de diffraction des rayons X, nous avons réalisé un affinement structural de l'intensité des satellites qui nous a permis de caractériser le mode de distorsion des octaèdres Mo06. Au voisinage de la transition, nous
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Girault, Sylvie. "Etude par diffraction des rayons X de l'onde de densité de charge dans les bronzes bleus de molybdène." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376054580.

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Beauchene, Pierre. "Transport non-linéaire par onde de densité de charge dans les bronzes bleus de molybdène vers la supraconductivité de Fröhlich /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37602675d.

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