Phosphorus residue radioactivity

A tryptic peptide containing a unique serine

A tryptic peptide containing a unique serine phosphate residue in rabbit phosphoglucomutase. Milstein CP, Milstein C. (32)P-labelled phosphoglucomutase was digested with trypsin after denaturation and two peptides were isolated that contained the bulk of the radioactivity bound to peptides. Both peptides appeared to derive from an identical section of the molecule. Peptic and subtilisin

Effect of Chelation on Phosphorus Metabolism in Total phosphorus me. % 17.7 0.6 49.0 1.9 46.5 2.6 cp.m. per mg. P 493 22 675 50 600 93 Cholesterol me-% 172 6 3210 52 2794 274 values to rise only twice above normal. How-ever, it appears to be significant that the radioactivity per milligram of phosphorus (specific activity) is statistically the same for the aortic phospholipids in groups B and C.

5.11 DICHLORVOS (025) RESIDUE AND ANALYTICAL ASPECTS

RESIDUE AND ANALYTICAL ASPECTS Dichlorvos is an organophosphate insecticide. It is effective against a broad spectrum of insect pests in stored products. It is also used in public health vector control and in animal health for the control of ectoparasites. It was evaluated by JMPR 1965 (T,R), 1970(T,R), 1993 (T,R), and in 2011 (T) as part of the periodic review programme. The ADI and acute

THE UPTAKE AND RELEASE OF INORGANIC PHOSPHORUS BY

of inorganic phosphorus due to hydrolysis of naturally-occurring organic phosphorus compounds is ncgligiblc compared with the direct rclcasc of inorganic phosphorus by D. magna. INTRODUCTION Tracer studies of the phosphorus circu- lation in the water of small lakes have de- monstratcd the extreme mobility of inor- ganic phoshorus (Rigler 1956). There is a rapid removal of phosphate from

A tryptic peptide containing a unique serine A tryptic peptide containing a unique serine phosphate residue in rabbit phosphoglucomutase. Milstein CP, Milstein C. (32)P-labelled phosphoglucomutase was digested with trypsin after denaturation and two peptides were isolated that contained the bulk of the radioactivity bound to peptides. Both peptides appeared to derive from an identical section of the molecule. Peptic and subtilisin Molecular Weight of Human Fibrinogen Phosphorus Determinationsthe 'cold insoluble residue'. Occasionally the ethanol precipitation methodofBlomback&Blomback(1956) was used. In some preparations 6-amino-n-hexanoic acid, an inhibitor offibrinolysis, wasaddedtoplasma. Although onlyreagents ofanalytical gradewereusedit wasfoundnecessaryto check that NaClwas phosphorus-free, since one brand added 1,ug. of

Phospholipid and Protein-bound Phosphorus Synthesis in the their radioactivity (2), and their phosphorus con tent (8) were determined. All radioactivity meas urements were made by a Geiger-Mlieller counter (Superscaler, Tracerlab). After the solvent extrac tion (TCA, alcohol-ether), the liver residue was di gested for 3 hours at 90°C. in l NNaOH to deter mine total protein-bound phosphorus (17). This fraction contains both the nucleoprotein and

GLYPHOSATE SORPTION AND DESORPTION IN SOILS WITH soils x 5 phosphorus rates and 3 replicates. For the sorption experiments, five glyphosate solutions were employed (0.42; 0.84; 1.68; 3.36 and 6.72 mg L-1), with a 14C radioactivity of 0.233 kBq mL-1. Four steps of the desorption procedure with CaCl 2 0.01 mol L-1 and one extraction with Mehlich 3 were performed only at

Imported phosphate fertilisers just as radioactive "Lynas's residue contains phosphorus and we are not utilising it, and we want to throw it away. In the meantime, we are buying low-quality phosphorus containing uranium and radium." He said

Phosphorus in Poultry Nutrition: IV. Radioactive

The residue was washed in distilled water, dried, and used for activity counts. The plan of experiment and the results obtained are summarized in Table 2. RESULTS AND DISCUSSION It has generally been assumed by most investigators that the phosphorus of the phytin molecule was very inactive in the body of the chick or the poult and that the intact molecule passed out of the body in the feces Title A study on Phosphorus Uptake of Brain Tumor by PHOSPHORUS l 1PTλKE CJF 1うI~λIN Tl 1M()R BY RADIOCTIVEIおりT()PE 485 solution was sterilized and properly diluted with RINGER-LOCKE、ssolution. The tumor tissue and normal brain and muscle tissue obtained during the operativヒ procedure, were minced on the ice cold glass plate, washed briefly in cold normal salineThe reactive serine residue in phosphoglucomutase The reactive serine residue in phosphoglucomutase of Micrococcus lysodeikiticus. Milstein CP, Clarke JB, Britton HG. 1. Phosphoglucomutase of Micrococcus lysodeikticus was labelled at the active site by exchange with (32)P-labelled substrates of high specific radioactivity. 2. Partial acid hydrolysis gave rise to radioactive peptides; serine phosphate was identified as one of the derivatives Natural radioactivity assessment of a phosphate 01/01/2014· Their radioactivity leading to health problems from radiation at the level of the industrial processes which involves mining and transportation of phosphate ores and production of fertilizers. At the usage level, when fertilizers dispersed into the geo and biospheres, have a potential to transfer to living beings. Leaching of the minerals and wastes is another potential source of radioactivity

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