Results 171 to 180 of about 6,296 (209)

Antimony-Phosphomolybdate ATPase Assay

2016
Hydrolytic activity is an important functional parameter of enzymes like adenosinetriphosphatases (ATPases). It is measured to test enzyme functionality, but it also provides useful information on possible inhibitory effects of molecules that interfere with the hydrolytic process.
Gianluca, Bartolommei, Francesco, Tadini-Buoninsegni   +1 more
openaire   +2 more sources

Accurate low-pressure kinetics for isobutane oxidation over phosphomolybdic acid and copper(II) phosphomolybdates

Catalysis Today, 2008
A low-pressure steady-state technique has been used to investigate the rates and mechanisms of the oxidation of isobutane over H 3 [PMo 12 O 40 ], CuH 4 [PMo 12 O 40 ] 2 , Cu 2 H 2 [PMo 12 O 40 ]2, Cu 2.5 H[PMo 12 O 40 ] 2 , and Cu 3 [PMo 12 O 40 ] 2 .
Kendell, Shane M., Brown, Trevor C., Burns, Robert C.   +2 more
openaire   +1 more source

Elastic Properties of Alkali Phosphomolybdate Glasses

Journal of the American Ceramic Society, 1989
Ultrasonic velocities at 10 MHz have been measured in two series of lithium, sodium, and potassium phosphomolybdate glasses with two fixed P 2 O 5 concentrations. Elastic moduli, Poisson's ratio, and Debye temperature have been calculated.
Damodaran, KV, Rao, KJ
openaire   +1 more source

Elastic properties of lead phosphomolybdate glasses

Materials Research Bulletin, 1988
Elastic properties of lead phosphomolybdate [PbO-1bMoO3-1bP2O5] glasses have been investigated using ultrasonic velocity measurements at 10MHz. The composition dependence of elastic moduli, Poisson's ratio and the Debye temperature are found to be consistent with a structural model proposed earlier.
Damodaran, KV, Selvaraj, U, Rao, KJ
openaire   +1 more source

Ultra-violet Absorption of Reduced Phosphomolybdate

Nature, 1951
ESTIMATION of phosphate with molybdate in the presence of a reducing agent is a well-established colorimetric method. Using excess of phosphomolybdate, reducing substances can also be estimated. This method was used by Briggs1 for hydroquinone and by Neuberger2 for homogentisic acid.
R. CONSDEN, WINIFRED M. STANIER
openaire   +1 more source

Elaboration and characterization of glassy cobalt phosphomolybdates

Solid State Sciences, 2003
Abstract Selecting two series of P2O5-based oxide glasses containing at the same time the MoO3 and CoO oxides, an investigation of structural properties has been undertaken by infrared (IR) and electron paramagnetic resonance (EPR) spectroscopies. The structure of glasses inside the CoO–MoO3–P2O5 system may be considered as made of several types of ...
N Mouhsine, L Bih, N Allali, A Nadiri, A Yacoubi, M Haddad, M Danot   +6 more
openaire   +1 more source

Separation of phosphomolybdate by affinity chromatography

Journal of Solid-Phase Biochemistry, 1976
A new method of separating phosphomolybdate from phosphoric esters and anhydrides using a small column of polyvinylpolypyrrolidone is introduced. When a mixture of phosphate compounds and ammonium molybdate (1–3%, pH 3-5) is poured onto such a column, inorganic orthophosphate (Pi)p1 is selectively adsorbed onto the column material as phosphomolybdate ...
S. Tsuyoshi Ohnishi, Michael L. Mayer
openaire   +1 more source

Chemistry of phosphomolybdate adsorption on alumina surfaces. 2. The molybdate/phosphated alumina and phosphomolybdate/alumina systems

The Journal of Physical Chemistry, 1990
The adsorption of ammonium heptamolybdate (AHM) on phosphated alumina and of P{sub 2}Mo{sub 5}O{sub 23}{sup 6{minus}} and PMo{sub 12}O{sub 40}{sup 3{minus}} on {gamma}-Al{sub 2}O{sub 3} has been studied by using FTIR, Raman, and {sup 31}P solid-state NMR spectroscopies, and TPR.
J. A. R. Van Veen, P. A. J. M. Hendriks, R. R. Andrea, E. J. G. M. Romers, A. E. Wilson   +4 more
openaire   +1 more source

An Assessment of Electronic Exchange in Phosphomolybdates

MRS Proceedings, 1990
ABSTRACTIn the synthesis of polyacrylates, a necessary step involves the conversion of acroleins to acrylic acids- a process catalysed by Mo oxides. We have directed our work towards the elucidation of the electronic structure of the most stable structure of 12-heteromolybdate, ie.
David J. Singh, Susan A. Jansen, Harry Mazurek, Guy Crocco   +3 more
openaire   +1 more source

Tetravalent Metal Complexation by Keggin and Lacunary Phosphomolybdate Anions

Inorganic Chemistry, 2008
We report the synthesis, spectroscopic and structural characterization, and computational analysis of a series of phosphomolybdate complexes with tetravalent metal cations. The reaction between Ce (IV) and Th (IV) with phosphomolybdate at the optimum pH for the stabilization of the lacunary heteropolyoxometalate anion, [PMo 11O 39] (7-), results in the
Copping, Roy, Jonasson, Leif, Gaunt, Andrew J., Drennan, Dennis, Collison, David, Helliwell, Madeleine, Pirttijarvi, Ross J., Jones, Chris J., Huguet, Anne, Apperley, David C., Kaltsoyannis, Nikolas, May, Iain, Huguett, Anne   +12 more
openaire   +3 more sources