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..., and other polyatomic systems have considerable fine structure.' " The commonly used "mixture rule," which... to an absorption edge in gases. More restraint should be exercised in using this rule at low energies and close
... Department, Vanderbilt University, February 25, 1969, Nashville, Tennessee. Land-Water Interactions, Students..., Sanitary Engineering Students, Tennessee Technological University, May 16, 1969, Oak Ridge, Tennessee... Alterations, February 8, 1969, New York, New York. Introduction to Radioactive Waste Disposal, Students..., Tennessee. Wallace de Laguna Radioactive Waste Disposal by Hydrofracturing, Students of the Radiological... in Salt Deposits, University of Arkansas, Students of the Radiological Health Program, March 28, 1969, Oak
... months is open to all AEC Fellowship students who have completed their first academic school year under... of Tennessee; in recent years more students have come from other schools. The field training consists of two... counting. In health physics research the students are first given a brief summary of all the research.... Fifteen students were enrolled in the course in General Health Physics (Physics 4710-20-30) taught
... Movement of Radionuclides, Sanitary Engineering Students, Tennessee Technological University, May 16, 1969..., Oak Ridge, Tennessee. Radioactive Waste Disposal, Students in Health Physics Course, University... Evaluation Studies, Students of the Radiological Health Program, University of Arkansas, March 28, 1969, Oak
...; and summer, 0.83. Spider food utilization is most economical when the greatest proportion of assimilated... energy is needed for respiration, that is, during winter and summer (Fig. 10.9). Spiders utilize food... to temperature, because at lower temperatures food is retained in the gut for a longer time period. Respiration... greater for higher trophic levels (e.g., spiders) due to the progressive scarcity of food organisms.... Predators expend a greater amount of energy in searching and pursuing food than do primary consumers. sumers
... of an ecosystem. The herbivore to predator transfer of energy in arthropod food chains constitutes an important... of ingested food was 1.02 times that of whole prey, and the caloric value of assimilated food was 1.06 times... as high as that of ingested food. Of the total energy consumed, 76.3% was assimilated, while 90.8... production) and respiration (maintenance and active). Secondary production Table 10.21. A Food Energy
... in bluegills food was calculated on the basis of the percentage of each food item in the stomach samples... and the concentration of 137Cs in the food items at that time of the year (Table 11.3). Assimilation of 137Cs from... different food items was studied by feeding experiments where the fish were sacrificed after 48 hr... percentage increased with the size of fish (Table 11.3). Assimilation was low from food containing clay
... by feeding on fescue shoots. After 24 hr of feeding, the radioactive food was removed from all animals... and replaced with nontagged food. Thereafter, food and water were changed daily. Biological elimination
.... The intake of food was calculated with the equation I, r = 1 The calculations of Zaidifg were made... from food was as follows: (22) with a minimum of 5 C in January and a maximum of 26.6 C in July... for a Food Item Chirononud larvae Other insect larvae Plants Detritus a(% (%0) 16 16 69 3 di fi... was 0.168 pc per gram of fish (Fig. 11.29), and the intake of food was 0.168/6.4 = 0.0263 g per gram of fish
... to leaching from the food was low. Most individuals did not reach equilibrium within this period... period the organisms were placed without food in polyethylene containers fitted with screening over... experiments than in the retention experiment following uptake from solution. The daily intake of food for each
... did not increase with the length of the food chain, but high concentrations of 137Cs occurred as well... Cs in food and in the percentage assimilated. The concentration of 1 37Cs in algae was 35 pc per gram... assimilate about 70% of their ingested 1 37Cs, only 7 Pc per gram of food must have been assimilated... and stable cesium must have been in different physicochemical states and that some organisms along the food
.... Reichle "Relation of Body Size to Food Intake, Oxygen Consumption and Trace Element Metabolism in Forest.... Crossley, Jr. "Analysis of Transient Behavior of Radioisotopes in Insect Food Chains," BioScience 19... of Radionuclides in Food Chains," Nucl. Safety (in press). D. E. Reichle with C. A. Edwards and D. A. Crossley, Jr
.... The radionuclide is traced through several food chains leading to man by reducing the environmental components... of radionuclide concentrations in human food. It does attempt, however, to maximize our present predictive ability... of radionuclides in each food product was calculated. Internal dose estimates will be made for ingestion
... provides the base or growth medium for the bases of many saprovore food webs in soil, making knowledge... to be amorphous detritus. Because of its small size, this material probably is important in the food webs of many... soil microarthropods, either directly as food or as Table 10.20. Biomass and Energy Content
... 131 Table 11.3. Percentage Assimilation of 17Cs from Different Types of Food Items in Different... Sizes of Bluegill Weight of Bluegill Food Item 0.5-1.2 g 8-10g
... 85 in decomposer food chains, which contribute to the recycling of nutrients (as well... of the bioenergetics of decomposer food chains as well as contributing to the pool size of 13-7Cs in soil organisms... 70% of the microarthropod biomass of decomposer food chains is eudaphic. Future work
.... Turnover rates may also be used to calculate food consumption by arthropods. In this case a knowledge... of whole-body concentrations of these elements and their concentration in the food source is necessary. KINETICS
..., spent the summer in the Division under the Summer Science and Engineering Program for students from
... and quantify ecosystem processes, for example, plant-soil-root relations, productivity, animal food chains..., and microbial activity (Fig. 10.1). Plant production and food-chain studies also have examined the pathways
... that the nature of carrier gases affects two-body attachment rates for thermal electrons as a rule rather than
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