Aldolase was isolated in a crystalline form in a 6% yield from rat Rhodamine sarcomas. The purification involved extraction with Tris-buffer, batchwise treatment with diethylaminoethylcellulose, ammonium sulfate fractionation, column chromatography on cellulose phosphate, and crystallization from ammonium sulfate solution (0.35 saturation). The crystalline aldolase preparation behaved as a homo...

to study the effect of type and different nitrogen fertilizers on controlling egyptian broomrape, field and greenhouse studies based on randomized complete block with three replications, were conducted at ferdowsi university of mashhad. greenhouse study treatments were consisted of ammonium nitrate, ammonium sulfate and urea each of which applied at four rates (75, 150, 300 and 350 kg/ha). fiel...

The objective of this study was to investigate the feasibility using modified biochars enhance removal ammonium from aqueous solution. pristine, NaOH-modified, ball-milled, and NaOH-modified ball-milled were prepared wheat straw at 500 °C. surface morphology characteristics biochar obviously changed after modification. NaOH-modification elevated pH value ash content biochar, ball-milling treatm...

DNA microarray analysis of gene expression in steady-state chemostat cultures limited for potassium revealed a surprising connection between potassium and ammonium: potassium limits growth only when ammonium is the nitrogen source. Under potassium limitation, ammonium appears to be toxic for Saccharomyces cerevisiae. This ammonium toxicity, which appears to occur by leakage of ammonium through ...

Aldolase was isolated in a crystalline form in a 6% yield from rat Rhodamine sarcomas. The purification involved extraction with Tris-buffer, batchwise treatment with diethylaminoethylcellulose, ammonium sulfate fractionation, column chromatography on cellulose phosphate, and crystallization from ammonium sulfate solution (0.35 saturation). The crystalline aldolase preparation behaved as a homo...

nitrate and ammonium forms of nitrogen are being applied to improve plant growth and uptake of other nutrients. given that the effect of application of different nitrate to ammonium ratios accompanied by other fertilizers (i.e. fe, mn and zn) has not been studied on wheat growth as well as uptake of fe, mn and zn, three glasshouse pot studies were conducted with factorial arrangement of treatme...