Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 67 for “"inorganic phosphate"”.
-
Changes in plasma inorganic phosphate associated with endocrine activity in Xenopus laevis
The plasma inorganic phosphate level may be influenced by (1) factors affecting the intermediary metabolism of phosphorus, (2) alternation in the degree of absorption of phosphorus, (3) alteration in the degree of excretion of phosphorus. In the introduction, the intermediary metabolism of …
-
Ionic processes in urine: a study of factors which may affect the renal excretion of inorganic phosphate
… the mode of regulation of the renal excretion of inorganic phosphate. Part one presents new data concerning the hypothesis of secretion of inorganic phosphate in the dog kidney, and as such is clearly relevant to the problem cited above. Part two arose from the earlier observations suggestive of a …
-
A Study of Processing-Structure-Property Correlations in Novel Inorganic Phosphate Glass/Polyamide 66 Hybrid Materials with Enhanced Benefits
<p>A new class of inorganic glass/organic polymer hybrid materials has been developed recently by using ultra low T<sub>g</sub> tin fluorophosphate glass (Pglass) to combine the advantages of classical polymer blends and composite materials without their disadvantages. One of the important …
-
The effect of quick freezing and fast thawing on stored seawater nutrient concentrations of dissolved inorganic phosphate, nitrate and ammonium
… intermediate and highest levels of dissolved inorganic phosphate (0.5, 1.5, 3.0 μM), nitrate (5, 15 and 30 μM) and ammonium (0.5, 1.5, 2.5 μM) that are found in the southern Benguela region. After spiking, the samples were analysed to determine their "true" initial concentrations and …
-
The Incorporation of Radioactive Acetate and Radioactive Inorganic Phosphate Into The Phosphatides of Various Tissues From 5 Degrees C - And25 Degrees C - Acclimated Goldfish (Crassius Auratus)
Made available in DSpace on 2014-12-09T23:34:02Z (GMT). No. of bitstreams: 1 6915262.pdf: 5439227 bytes, checksum: 0874a1dd35cd79896753f4f0bd38bcb7 (MD5) Previous issue date: 1969
-
The role of acid phosphatases in the phosphorus nutrition of arctic tundra plants
… and continues at substantial rates at 1 °C. Inorganic phosphorus inhibits activity only 7 to 19%. In addition, Eriophorum has phosphatase activity associated with all the "below-ground" components of its tussock growth form: dead roots, leaf sheaths, and soil. Plants with higher tissue …
-
Sorption and desorption of inorganic phosphate by soils as influenced by inorganic and organic anions : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science (Soil Science) at Massey University
… and plant availability of soil and fertilizer inorganic phosphate (P). Evidence that different inorganic and organic anions can modify P retention was presented by many workers prior to 1950 ( Kurtz et al., 1946; Dean and Rubins, 1947; Swenson et al., 1949 ). The exact mechanisms of this effect …
-
Developing a stable isotope approach to trace the sources and metabolism of phosphorus in freshwaters
The oxygen isotope ratio of dissolved inorganic phosphate (δ18Op) represents a novel and potentially powerful stable isotope tracer for biogeochemical research. Analysis of δ18Op may offer new insights into the relative importance of different sources of phosphorus within natural ecosystems. Due to …
-
The metabolic role of intracellular inorganic polyphosphate during the synchronous growth of Chlorella pyrenoidosa
… presence of a high molecular weight polymer of inorganic phosphate has raised questions concerning the metabolic role of the polymer and the mechanism(s) by which it is synthesized and utilized. The purpose of the research described in this dissertation was to determine the relationship of …
-
Evaluation of storage strategies and techniques for the hydrochemical analysis of nutrients in Atlantic Ocean coastal water samples
… C. Deviations in the concentrations of silicate, inorganic phosphate, nitrite, nitrate and urea from the initial concentrations determined on collection of the seawater samples were monitored at intervals over a twelve week storage period. Chemical analysis of filtered and non-filtered water …
-
Metabolic basis for the preferential utilization of disaccharide, by the cellulose-decomposing bacterium, cellvibrio gilvus (nov. sp.)
… Resting cells grown on cellobiose esterified inorganic phosphate in the presence of glucose or cellobiose showed that these sugars were metabolized to phosphate esters. Relative rates of utilization of both sugars revealed that 130% more cellobiose was used at pH 6.5 and 590% more at pH 7.0. …
-
The role of water column and benthic communities in the spatial and temporal production and uptake of nutrients in controlling the trophic status of the Knysna River Estuary, South Africa
… increases in anthropogenic input of nitrogen and phosphate associated with the rapidly increasing urbanization of its littoral and catchment. This dissertation relies on original data, which includes the measuring of concentrations of ammonium, nitrates (nitrate and nitrite), dissolved inorganic …
-
Aspects of purine and pyrimidine metabolism
… is presented. The effects of pH, pO₂ and inorganic phosphate (Pi) on the uptake and metabolism of hypoxanthine by erythrocytes has been studied in Chapter 2. Uptake of hypoxanthine and accumulation of inosine 5'-monophosphate (IMP) were markedly increased at acid pH, high external …
-
ΦΩΣΦΑΤΑΣΗ ΤΗΣ 1,6-ΔΙΦΩΣΦΟΡΙΚΗΣ ΦΡΟΥΚΤΟΖΗΣ ΚΑΙ ΑΤΡ-ΔΙΦΩΣΦΟΥΔΡΟΛΑΣΗ ΣΤΟΝ ΑΝΘΡΩΠΙΝΟ ΠΛΑΚΟΥΝΤΑ
… FRACTION (P37). IT HYDROLYSES ATP TO AMI AND INORGANIC PHOSPHATE THROUGH ADP. THE PH OPTIMUM OF ATP-DPH IS 8,0-8,5. THE ENZYME IS ACTIVATED BY MG2+(IMM) BY NAF OR NAN3 WHILE INHIBITORS OF ATPASES, MYOKINASE ANDALKALINE PHOSPHATASE HAVE NO EFFECT. ATP-DPH DEGRADES ADP THUS PREVENTING PLATELET …
-
Modulation of Alpha-Subunit VISIT-DG Sequence Residues Ser-347, Gly-351 and Thr-349 in the Catalytic Sites of <em>Escherichia coli</em> ATP Synthase.
<p>Binding of inorganic phosphate (P<sub>i</sub>) in ATP synthase catalytic sites is a crucial step for the synthesis of adenosine-5'-triphosphate (ATP). ATP is the fundamental means of cellular energy in almost every organism, and in order to gain insight into the regulation of ATP catalysis, …
-
The in Vitro Effects of the Sulfate Conjugate of Dehydroepiandrosterone on the Incorporation of Radio Phosphate into the Various Fractions of Mouse Kidney Tissue
… life in organisms from protozoans to mammals. As phosphate it combines in organic complexes involved in energy transformations within cells. As inorganic phosphate, it associates with calcium in the formation of osseous structures. In higher forms of life, phosphate is demonstrated as a major …
-
Metagenomic characterization of Candidatatus Defluviicoccus tetraformis TFO71, a tetrad-forming organism, predominant in an anaerobic-aerobic membrane bioreactor with deteriorated biological phosphorus removal
… phosphatis (CAP) UW-1, a representative polyphosphate-accumulating organism (PAO), have PHA metabolism-related genes with high homology, but TFO71 has unique genes for PHA synthesis, gene regulation, and granule management. We further discovered genes encoding DTFO polyphosphate (polyP) …
-
The effect of osmotic shock on the release of acid phoshatase activity from streptococcus mutants
… of the bacteria. Secondly, in the presence of inorganic phosphate the enzyme is observedly repressed. Finally, during the period of bacterial growth in minimal media supplemented with various concentrations of phosphate, the nature of the enzyme is constituitive. The "osmotic shock" procedure …
-
Anomaly detection in laboratory tests subject to gatekeeping in selected health facilities
… in these wards included calcium, magnesium, inorganic phosphate, total protein, albumin, bilirubin tests, creactive protein, procalcitonin and rubella PCR. The facilities selected for intervention included major hospitals for example Nelson Mandela Academic Hospital, Port Elizabeth Provincial …
-
ΜΕΤΑΒΟΛΙΣΜΟΣ ΤΟΥ ΦΩΣΦΟΡΟΥ ΣΤΑ ΕΡΥΘΡΟΚΥΤΤΑΡΑ ΤΕΛΕΙΟΜΗΝΩΝ ΝΕΟΓΝΩΝ ΣΤΗ ΔΙΑΡΚΕΙΑ ΤΟΥ ΠΡΩΤΟΥ ΧΡΟΝΟΥ ΖΩΗΣ
… OF THEIR LIVES . WE DETERMINED THE LEVELS OF INORGANIC PHOSPHATE (P1) IN PLASMA AND RED BLOOD CELLS, PLASMA CALCIUM, HT AND THE ORGANIC METABOLITES OF ADENOSINE TRIPHOSPHATE (ATP) AND 2,3 DIPHOSPHOGLYCEROTE (2,3 DPG) IN CRYTHROCYTES. THE PLASMA CALCIUM (P1CA) INCREASED TILL THE 6TH MONTH OF …
Page 1 of 4