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Showing 1 to 20 of 47 for “"Ammonium sulphate"”.
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Recovery of nickel from waste copper electrolytes by precipitation with ammonium sulphate
Includes bibliographical references.
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The effect of post-harvest ammonium sulphate application, planting time and sucker size on plant growth and yield of queen pineapple, ananas comosus
… the effects and interactions of post-harvest ammonium sulphate fertilizer application and the duration of sucker growth on the production and quality of suckers as well as on the growth and development of subsequent plantings. Post-harvest (NH4)2SO4 application had a significant influence on …
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The effect of spray adjuvants on the phytotoxicity of herbicides
… reduced the herbicide activity on wheat plants. Ammonium sulphate significantly increased the activity of glyphosate in a number of greenhouse and field experiments. This activation occurred in distilled, Saskatoon city supply and Dundurn well water. In a greenhouse experiment glyphosate was …
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Mineralogical and ion-exchange leaching study of a Rare Earth Element (REE) bearing ion-adsorption clay deposit
… halloysite, REEorganic matter and mineral phase. Ammonium sulphate leach experiments were conducted, varying the ionic strength to determine optimum leaching concentrations. Seawater is easily available at the coastal mine, therefore simulated seawater (NaCl) experiments were conducted with the …
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Effect of sulphur fertilization on growth and chemical composition of sorghum (Sorghum Bicolor L.) and on utilization of sorghum silage fed to wethers
… without S fertilization (0 vs. 138 kg S ha⁻¹ as ammonium sulphate) in a randomized block design with four replications. Sulphur fertilization decreased (P < 0.05) soil pH and increased soil S in the 0 to 25 cm (P < 0.08) and 25 to 50 cm (P < 0.05) soil layers. An increase in Mehlich-I extractable …
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ISOLATION OF ELECTRON TRANSPORT COMPONENTS FROM MICROCYSTIS AERUGINOSA AND OSCILLATORIA SP
… procedure, using high concentrations of ammonium sulphate to fractionate water-soluble proteins on Sephacryl, was successfully employed together with conventional chromatographic tools to purify the proteins of interest to homogeneity. Sephacryl is a gel matrix normally used for gel …
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Investigation of purification procedures to isolate rat mitochondrial ẟ - aminolaevulinic acid synthetase
… to purify a mitochondrial extract included 0-50% ammonium sulphate precipitation, 5-20% (w/v) polyethylene glycol precipation, CM-sephadex chromatography, Sephadex G-100 filtration, and electrophoresis. 3. Attempts to duplicate previously reported purifications of ALV-Synthetase by use of affinity …
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Purification and characterization of an insulin-stimulated kinase
… with a rapid procedure which included ammonium sulphate precipitation.This enabled storage of the activated kinases (with apparently very little loss in activity) and further purification. After first examining the chromatographic properties using individual column techniques, the …
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Absorption of nitrogen from a liquid by pine bark
… nitrogen absorbed, from an aqueous solution of ammonium sulphate and from a dairy slurry, by pine bark over time as a function of pH and initial nitrogen concentration in the laboratory and in the field. The proportion of ammoniacal nitrogen absorbed over 24 hours, at pH 6 to 8, ranged from 35% …
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Purification and characterisation of amylolytic enzymes from Lipomyces starkeyi
… from the cell free supernatant by an 85%(w/v) ammonium sulphate precipitation. Many different chromatographic media were then assessed, but the choice of a hydrophobic (Phenyl Sepharose CL-4B) column had the advantage of utilizing the ammonium sulphate precipitate with minimum sample …
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Response of Cynodon dactylon (L.) Pers. to ammonium and nitrate nutrition
… come early in succession predominantly prefer_ ammonium form of nitrogen than nitrate. The hypothesis that Cynodon dactylon (L.) Pers., a grass in the primary succession stage would respond well when supplied with ammonium than nitrate fertiliser was tested. Seedlings of Cynodon dactylon were …
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STUDIO DELLA COMPOSIZIONE CHIMICA DEL DEPOSITO DI PARTICOLATO ATMOSFERICO E DELLA SUA INFLUENZA SULLA CONDUCIBILITÀ ELETTRICA DEGLI ISOLATORI DELLA RETE DI TRASMISSIONE
… sodium and chlorides while lacking largely ammonium sulphate and nitrate, newborn seasonality was also observed. Regarding carbonaceous, OC/EC ratio proved to be a peculiar characteristic in deposits being higher than in air up to a factor 10. The main campaigns were supported by intensive …
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Effects of certain fertilizer and manurial treatments on the cation exchange properties and organic matter content of dunmore silt loam
… farm manure had or no effect on soil reaction. Ammonium sulphate caused a reduction of the pH and exchangeable calcium and magnesium and an increase in exchangeable hydrogen. The application of this fertilizer decreased exchangeable calcium but had no influence on the pH. Of the total potassium …
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Cloning, expression, and characterization of lactic acid bacteria recombinant prolidases
… from the pKK223-3 systems were purified through ammonium sulphate precipitation and anion-exchange column chromatography. Recombinant Lb. plantarum prolidase, however, demonstrated a loss of activity during the purification. The following characterization work was performed on purified …
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In vitro proteolysis of ovine lens crystallins by calpain II : A dissertation submitted in partial fulfilment of the requirements for the Degree of Bachelor of Science with Honours
… Calpain II separation was achieved using ammonium sulphate precipitation, hydrophobic chromatography and ion exchange chromatography, while the crystallins were purified using ion exchange and gel filtration chromatography. Calpain II was incubated separately with α-, β-and γ- crystallin …
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The Evaluation of the Fungi Using Tower Fermenters
… and supplemented with (i) Glutdmic acid, (ii) Ammonium eudphate. Cina) Glutamic acid plus Ammonium sulphate, (iv) unsupplemented. The fungi were first cultured on malt extract solidified with agar, and 8mm diameter transplants were made from these cultures and transferred to the supplemented …
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Identification of a novel HIV-1C protease from a microbial source
… isolated from E. coli crude cell lysates using ammonium sulphate precipitation, gel filtration and anion exchange chromatography fractionation. It was identified using peptide fingerprinting mass spectrometry (PMF), as alkyl hydroperoxide reductase C22 subunit (AhpC22). Mass-Assisted Laser …
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Evaluation of solvent swelling pre-treatment combined with ammonia leaching using waste etchant from printed circuit board manufacturing for copper recovery from waste printed circuit boards
… systems were analyzed for performance, namely ammonium sulphate, waste etchant and synthetic etchant. Of the three, ammonium sulphate with initial copper concentration of 100 ppm was significantly outperformed in leaching rate by waste etchant and synthetic etchant which required shorter …
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The Expression of Chikungunya Virus Envelope 2 Glycoprotein Variants in Nicotiana benthamiana for the Development of a Diagnostic Reagent
… CHIKV E2ΔTM-HIS. A different approach utilising ammonium sulphate precipitation facilitated separation of recombinant CHIKV E2ΔTM-HIS from some of the contaminating plant proteins in the 30 - 60% ammonium sulphate fraction; however, large amounts of recombinant CRT were co-purified with E2 in …
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Piezoelektrischer Schwermetallbiosensor mit Glutathion und Phytochelatin als Biokomponente
… activity could be achieved by a fractioned ammonium sulphate precipitation. The immobilisation of the enzyme resulted in a low contamination of the fluent phase with enzyme (i.e. low bleeding of the immobilisates), hence there was no need to further purify the produced phytochelatin. In …
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