Search results for "phosphate"
showing 10 items of 1874 documents
c-MYC Triggers Lipid Remodelling During Early Somatic Cell Reprogramming to Pluripotency.
2021
AbstractMetabolic rewiring and mitochondrial dynamics remodelling are hallmarks of cell reprogramming, but the roles of the reprogramming factors in these changes are not fully understood. Here we show that c-MYC induces biosynthesis of fatty acids and increases the rate of pentose phosphate pathway. Time-course profiling of fatty acids and complex lipids during cell reprogramming using lipidomics revealed a profound remodelling of the lipid content, as well as the saturation and length of their acyl chains, in a c-MYC-dependent manner. Pluripotent cells displayed abundant cardiolipins and scarce phosphatidylcholines, with a prevalence of monounsaturated acyl chains. Cells undergoing cell r…
New insights in the metabolic behaviour of PAO under negligible poly-P reserves
2017
[EN] In a previous study the authors confirmed the ability of PAOs to perform GAO metabolism in short-term experiments. However, what happens when PAOs are exposed to poly-P shortage for an extended period of time? The answer to this question was the aim of this work from a macroscopic and microscopic point of view. Therefore, the poly-P was removed from a PAO enriched SBR and maintained without poly-P during five solid retention time. The PAOs were found to quickly change their metabolism to a clear GAO performance and remained without GAO colonization for the entire experimental period, even though GAO was present (around 5%) at the beginning of the experiment. Unlike the results obtained…
The influence of phosphoric acid on steel and on its corrosion products: a Mössbauer spectroscopic approach
1983
Mossbauer spectroscopy was used to study corroded iron after treatment with phosphoric acid or commercial rust transformers. It was found that treatment produced normal iron phosphates from metallic iron, hematite and FeO, and acid ferric phosphate FeH 3 (POI4I)I2I. 2.5H 2 O from alphaand gamma Fe 2 O 3 and alpha, beta, and gammaFeOOH. When these last are present, phosph oric acid treatment does not produce a protective, inhibiting layer. See also AATA 19-702. -- AATA
Liquid–liquid equilibria in the system H3PO4–KCl–H2O–tri-n-butyl phosphate: experiments and modelling
2004
Abstract The liquid–liquid equilibria of the system H3PO4–KCl–H2O–TBP was studied experimentally in the concentration range 0–6 mol/kg. The obtained data were modelled using the Pitzer equation for the aqueous phase and the Sergievskii–Dannus relationship for the organic phase. A fairly good agreement was observed between the model and the experimental data.
cis-Aquabis[bis(diphenylphosphino)ethane-κ2 P,P′]chlororuthenium(II) hexafluorophosphate dichloromethane sesquisolvate hemihydrate
2006
In the title compound, [RuCl(C26H24P)2(H2O)]PF6·1.5CH2Cl2·0.5H2O, the complex RuII cation is in a slightly distorted octahedral environment, chelated by two bis(diphenylphosphino)ethane ligands, with a water molecule and a chloride anion in a mutually cis geometry completing the coordination.
Der Einfluss kondensierter Phosphate auf die Eisen-Resorption
1959
Es sollte untersucht werden, ob die kondensierten Phosphate Tetranatriumpyrophosphat, Natriumtripolyphosphat, Hexametaphosphat, Kaliummetaphosphat und Plasmal die Eisenresorption beeintrachtigen. Als Masstab fur diesselbe galten die Hamoglobin- und Erythrocytenregeneration und die Gewichtszunahme anamischer Ratten. Die Anamie wurde durch Phenylhydrazinhydrochlorid-Injektionen bzw. eine eisenarme Ernahrung (Milchdiat) hervorgerufen. Bei den herrschenden Versuchsbedingungen konnte ein nachteiliger Einflus der getesteten Substanzen auf die Eisenresorption nicht nachgewiesen werden. Auf Grund dieser Versuche und allgemeiner Uberlegungen wurde geschlossen, das dies uberhaupt unter physiologische…
Magnetostructural correlations in parallel square-planar halo-bridged copper(II) dimers. Part II: Structure and magnetic properties of [Cu2(terpy)2Br…
1987
Abstract The crystal and molecular structure of bis-μ- bromo-bis [(2,2′:6′,2″ - terpyridyl) copper (II) ] bis (hexafluorophosphate) has been determined from three dimensional single-crystal X-ray diffraction data, collected by counter techniques. The blue crystals belong to the monoclinic system, space group P21/a, with four formula units in a unit cell of dimensions a=20.40(2), b=13.35(2), c=6.453(8) A and β=97.74(9)°. The structure was solved using a refinement procedure and starting with the atomic positions of the isostructural complex [Cu(terpy)- Cl]2(PF6)2, to final agreement factors R=0.071 (Rw=0.077). The structure consists of dimeric molecules bridged by two bromine atoms. The coor…
On the synthesis and characterization of layered antimony(III) phosphate and its interaction with moist ammonia and amines
1998
Samples of antimony(III) phosphate, a layered material, were prepared at room temperature, using the two allotropic forms of Sb2O3, layered valentinite and cubic senarmontite. The compounds were characterized by infrared spectroscopy, X-ray diffraction, and thermogravimetric–differential thermal analysis. Solids exposed to ammonia, ethylenediamine, or hydrazine vapors also were studied. The interaction between SbPO4 and the bases always led to the formation of stoichiometric amounts of Sb2O3 and hydrogen phosphate(–2) salts of the bases. With ammonia, the SbPO4 raw materials gave rise to valentinite or senarmontite, depending on which Sb2O3 allotropic form was used to prepare antimony phosp…
Anwendung der Mößbauer-Spektroskopie auf die Untersuchung von Deckschichten in Naturumlaufkesseln
1978
57Fe-Mosbauer-spektroskopische Transmissions- und Reflexionsmessungen wurden zur Aufklarung der qualitativen und quantitativen Zusammensetzung von Deckschichten auf der Innenseite von Rohren aus Naturumlaufkesseln vorgenommen. Die Deckschichten waren bei 120 bis 174 atu, 320 bis 353 °C, einem pH-Wert zwischen 9,5 und 10,5 und einem Gehalt an P2O5 und SiO2 von < 10 bzw. < 4 mg/l auf den Rohrinnenflachen (Werkstoff 15 Mo 3: 0,12%C, 0,15% Si, 0,5% Mn, 0,04% P, 0,04% S, ⩽ 0,3% Cr, 0,25% Mo, Rest Fe; St. 45. 8. III: < 0,22% C, 0,1% Si, ⩾ 0,45% Mn, 0,05% P, 0,05% S, ⩽ 0,3% Cr, Rest Fe) innerhalb von maximal 127000 h entstanden. Die Mosbauer-spektroskopischen Untersuchungen, unterstutzt durch eine…
An Inorganic Double Helix Sheathing Alkali Metal Cations: ANb2P2S12(A=K, Rb, Cs), A Series of Thiophosphates Close to the Metal-Nonmetal Boundary-Cha…
2004
The new quaternary niobium thiophosphates ANb 2 P 2 S 1 2 (A=K, Rb, Cs) have been prepared and characterized. The title compounds were synthesized by reacting Nb metal, A 2 S, P 2 S 5 , and S at 600-700°C in evacuated silica tubes. They crystallize as "stuffed" variants of the tetragonal TaPS 6 structure type in the tetragonal space group I42d with eight formula units per unit cell and lattice constants a=15.923(2) and c=13.238(3) A for CsNb 2 P 2 S 1 2 , a= 15.887(3) and c=13.132(3) A for RbNb 2 P 2 S 1 2 , and a=15.850(2) and c= 13.119(3) A for KNb 2 P 2 S 1 2 . Their structures are based on double helices formed from interpenetrating, noninteracting spiral chains of binuclear [Nb 2 S 1 2…