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 15 of 15 for “"Tracer techniques"”.
-
The application of tracer techniques in endocrinology
Using a labelled estrogen (radiodibromestrone) it has been demonstrated that none of the body tissues accumulate the steroid to any marked degree. The excretion route was found to be by way of the bile into the intestine . An enterohepatic circulation has been suggested, since some estrone was …
-
Combined physiological and anatomical studies on cells of the spinocervical tract
… recording and HRP retrograde neuronal tracer techniques.
-
Characterization of Denitrification and Leaching Losses of Fertilizer Nitrogen From Soil (Evolution, Isotope, Nitrous Oxide, Dinitrogen)
… in measuring denitrification by use of ('15)N-tracer techniques recently developed for determination of N(,2) and N(,2)O evolved from soil; (2) evaluate three methods of estimating fertilizer N loss under field conditions (grain yield reductions, an ('15)N difference method, and a direct …
-
EXPLORATION OF STRONTIUM UPTAKE BY BONE AND SOFT TISSUES USING STABLE ISOTOPE TECHNIQUES
… strontium are known to reduce fracture risk. A tracer study in sheep revealed that bone-seeking tracers (Ca-41 and Sr-86) are incorporated into the bone matrix by remodeling processes favoring trabecular bone and that changes in net bone balance over time can be assessed using strontium stable …
-
Limits to exogenous glucose oxidation by skeletal muscle during prolonged, moderate-intensity exercise in man
… exercise, uniformly labelled ¹⁴carbon (U-¹⁴C) tracer techniques were used in association with conventional gas exchange measurements and post-exercise gastric aspiration to compare the rates of gastric emptying, intestinal CHO delivery and ingested CHO oxidation from 15 g/100 ml solutions of …
-
Flow and mixing studies in a co-rotating intermeshing twin screw extruder
… distribution (RTD) and of the paths taken by tracers added to the melt. The axial mixing and the effects of varius parameters on it were established by studying RTD using tracer techniques. As the tail of the distribution is of paramount importance, the reproducibility of the RTD curve was …
-
Morphometric characterization of individual sympathetic postganglionic axons innervating the muscle layers of the gastrointestinal tract of the rat: A complex effector model
… been strongly shaped by the limitations of the techniques employed to distinguish the fibers and complicated by inconsistent findings generated with various methodologies. Thus, the present experiment used modern neural tracer techniques to provide high-resolution labeling of sympathetic fibers …
-
Spatiotemporal dynamics of grounwater in the Andean Highlands in northern Ecuador
… modelling combined with saturated zone routed techniques is an effective strategy for evaluating the renewable water resources under stationary conditions prior forecasting climate and human impacts under plausible scenarios. This methodology has proven to be suitable for sparse-data …
-
Hydrodynamics, Mixing, and Mass Transfer in Bubble Columns with Internals
… velocity model developed by Gupta: 2002). Gar tracer techniques are used to study the effect of internals on the overall axial gas mixing and mass transfer. A 2-D model, that considers the radial variations of the gas velocity and gas holdup, is developed and used to analyze the tracer data …
-
Hydrological processes in volcanic ash soils : measuring, modelling and understanding runoff generation in an undisturbed catchment
… soil mineralogy, geo-electrical soundings and tracer techniques. Assembling the results like pieces of a puzzle produces a maybe not complete but nevertheless useful picture of the dynamic ensemble of runoff generation processes in this catchment. The employed methods were then evaluated for …
-
Aspects of the chemistry of milk protein films formed on stainless steel
… the iodine to the milk proteins of cooled milk. Techniques were developed to study the surface chemistry of radioactively labelled milk proteins at stainless steel-water interfaces. The amount adsorbed was calculated according to the principle of isotope dilution. Autoradiography and high …