Results 251 to 260 of about 21,548 (308)

Ultralong-Range Periodic Alignment and Structural Coloration of Titanate and Titanoniobate Nanosheets in Aqueous Dispersions. [PDF]

JACS Au
Kikuchi T, Ebina Y, Sakai N, Sakai N, Sugahara Y, Sasaki T, Ma R.   +6 more
europepmc   +1 more source

Soil Ecological Processes in Vegetation Patches of Well Drained Permafrost Affected Sites (Kangerlussuaq - West Greenland) [PDF]

, 2005
Broll, G., Ozols, U.
core  

Influence of Tithonia diversifolia biochar on selected soil physicochemical properties, leaf nutrient concentrations and broccoli growth. [PDF]

Sci Rep
Agbede TM.
europepmc   +1 more source

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Determination of exchangeable acidity and exchangeable aluminium in hill soils part 1 exchangeable acidity

Communications in Soil Science and Plant Analysis, 1985
Abstract Exchangeable acidity of soils has previously been measured by titration of soil extracts to a phenolphthalein endpoint at pH 8.3. The use of standard hydrogen and aluminium solutions indicates that this is inaccurate and a preferred technique, differential potentiometric titration is proposed.
K.A.B. Logan, M.J.S. Floate, A.D. Ironside   +2 more
openaire   +3 more sources

Interorgan amino acid exchange

Current Opinion in Clinical Nutrition and Metabolic Care, 2000
This review is concerned with the status of our current research related to the exchange of amino acids across organs. Accumulation of knowledge regarding how amino acid pools are maintained within the body remains a work in progress. In recent years, the use of organ balance measurement techniques in combination with isotopic tracers has much ...
TESSARI, PAOLO, G. GARIBOTTO
openaire   +5 more sources

Deuterium exchange during acid-demineralisation

Geochimica et Cosmochimica Acta, 1988
Isotopic analyses of residues prepared by demineralisation of the Murchison meteorite using D-labelled reagents provide evidence for measurable exchange of H-isotopes between residue and reagents. Precise quantification of this effect is precluded by substantial inhomogeneity of the meteoritic organic matter.
J F, Kerridge, S, Chang, R, Shipp
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Exchange characteristics of monocarboxylic acids and monosulfonic acids onto anion-exchange resins

Journal of Colloid and Interface Science, 2004
In the previous paper (N. Kanazawa, K. Urano, N. Kokado, Y. Urushigawa, J. Colloid Interface Sci. 238 (2001) 196), the equilibria of propionic acid and benzoic acid adsorption onto three anion-exchange resins were investigated, and an equation was proposed that summed of the physical adsorption of the carboxylic acid molecule and the ion exchange of ...
Nobuhiro, Kanazawa, Kohei, Urano, Naohiro, Kokado, Yoshikuni, Urushigawa   +3 more
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Anion exchange in acetic acid solutions

Analytica Chimica Acta, 1971
Abstract The adsorbabilities of 65 elements in water-acetic acid medium on the anionexchanger Dowex 1-X8 have been investigated in the region 2–17.4 M acetic acid. Examples of possible individual separations of elements are given, namely : Cu-Zn, Mn-Cu-Zn, Na-As-Cu and U-Np. A separation of the elements Ag, As, Au, Br. Co, Cu, K, Mn, Mo, Na, Sc and
S.K. Jha, F. De Corte, J. Hoste
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Enzymatic fatty acid exchange in digalactosyldiacylglycerol

Chemistry and Physics of Lipids, 2000
Six different lipases were screened for their ability of acidolysis between digalactosyldiacylglycerol (DGDG) and heptadecanoic acid in toluene. Lipases from Geotrichum candidum, Alcaligenes sp. and Penicillium camembertii did not catalyse the acidolysis reaction.
M, Persson, I, Svensson, P, Adlercreutz
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