Global ETD Search

111	The application of differential pulse stripping voltammetry in the determination of trace metals in wet precipitation / Le Roux, Shirley Theodora Rose. January 1900 (has links) Thesis (MTech (Physical Sciences))--Peninsula Technikon, 1999. / Word processed copy. Summary in English. Includes bibliographical references (leaves 75-79). Also available online.
112	Electrophoretic methodologies for the determinations of minerals and trace elements in milk Sze, Kwan-Lok., 施均樂. January 2009 (has links) published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy Electrophoresis. Metals. Trace elements. Milk - Analysis.
113	Analysis of trace metals in palm oil Fung, Ying-sing, 馮應昇 January 1977 (has links) published_or_final_version / Chemistry / Master / Master of Philosophy Palm oil - Analysis. Trace elements - Analysis.
114	Trace analysis by direct potentiometry Choi, Koon-kay, Louis. January 1980 (has links) published_or_final_version / Chemistry / Master / Master of Philosophy Potentiometer. Electrodes, Ion selective. Trace elements - Analysis.
115	Trace metals analysis by electroanalytical methods 黃洸漢, Wong, Kwong-hon. January 1979 (has links) published_or_final_version / Chemistry / Master / Master of Philosophy Metals - Analysis. Trace elements - Analysis. Electrochemical analysis.
116	Selective trace element geochemistry, San Antonio Mine, Santa Eulalia, Chihuahua Bond, Brian Robert, 1958- January 1988 (has links) No description available. Trace elements.
117	The nature and content of certain trace elements in selected galenas Staples, Bruce Allen, 1939- January 1964 (has links) No description available. Galena. Trace elements. Mines and mineral resources -- Arizona.
118	Trace element investigation of the "Turkey Track" porphyry, southeastern Arizona Mielke, James E. January 1965 (has links) No description available. Porphyry -- Arizona. Petrology -- Arizona. Trace elements.
119	The distribution, texture and trace element concentrations of lake sediments / Rowan, David J. January 1992 (has links) Hypotheses regarding the distribution, texture and trace element concentrations of lake sediments were tested by empirical analyses of multi-lake data sets (52 to 83 lakes). Sediment distribution was best characterized by the deposition boundary depth (DBD), the abrupt transition from coarse- to fine-grained sediments. The DBD can now be predicted from either empirical models or empirical-theoretical simplifications of wave of sediment threshold theory, both in terms of exposure (or fetch) and bottom slope. The texture (organic content, water content and bulk density) of profundal sediments was related to the inorganic sedimentation rate and exposure, but not to the lake trophic status or the net organic matter sedimentation rate. The relationships between sediment texture and intra- and inter-site variability, together with the models that predict the DBD and sediment texture, were used to develop an algorithm that should greatly reduce sampling effort in lake sediment surveys. Finally, sediment trace element concentrations were predicted from sediment texture, site depth and simple geologic classifications. The models developed here, provide a framework in which to sample lake sediments and interpret their properties. Lake sediments. Lake sediments -- Sampling. Trace elements.
120	Effects of various levels of calcium and boron nutrition on flax. Laganière, Jacques. January 1966 (has links) About 25,000 acres of flax for fiber was grown during the second world war in the Province of Québec when the traditional sources of supply in Europe were cut off (Anonymous). With the armistice, the prices dropped and farmers abandoned this crop because of competition from European countries. In the 1950's a few farmers became interested in growing flax for linseed oil, chiefly in the Montreal area. The acreage bas increased steadily, so that by 1964 flax was being grown on about 35,000 acres in this Province (Shiller 1964). [...] Plants -- Nutrition Trace elements Biology, General.

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