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Articles 50851 - 50880 of 52387
Full-Text Articles in Physical Sciences and Mathematics
Sorption Kinetics Part Ii: Modeling Longitudinal Concentration Profiles In A Packed Bed Reactor, David W. Hendricks
Sorption Kinetics Part Ii: Modeling Longitudinal Concentration Profiles In A Packed Bed Reactor, David W. Hendricks
Reports
A mass balance simulation model for sorption in a packed bed reactor was developed. All of the terms in the model, consisting of constants of the porous media, and functions, were evaluated by independent laboratory studies. The kinetic term was determined in Part I. Two numerical schemes (an explicit scheme and an implicit scheme respectively) with corresponding computer programs were developed and made operational. They were not tested against laboratory column results due to long times necessary on the computer and corresponding high costs. Laboratory testing consisted of measuring column profiles for six different packed columns at different flow rates …
Interregional Planning Of Water Resources Allocations By Systems Analysis Approach , John E. Keith, Jay C. Andersen, Alton B. King, Mark H. Anderson, Calvin G. Clyde, Daniel H. Hoggan
Interregional Planning Of Water Resources Allocations By Systems Analysis Approach , John E. Keith, Jay C. Andersen, Alton B. King, Mark H. Anderson, Calvin G. Clyde, Daniel H. Hoggan
Reports
No abstract provided.
Irrigation And Non-Irrigation Alternatives For Reducing Sugar Cane Transportation Costs In Santa Cruz, Bolivia, E. Boyd Wennergren, Allen D. Lebaron, Lee Bailey, Morris D. Whitaker
Irrigation And Non-Irrigation Alternatives For Reducing Sugar Cane Transportation Costs In Santa Cruz, Bolivia, E. Boyd Wennergren, Allen D. Lebaron, Lee Bailey, Morris D. Whitaker
Reports
No abstract provided.
The Demand For Agricultural Water In Utah, Mark H. Anderson, Jay C. Andersen, John E. Keith, Calvin G. Clyde
The Demand For Agricultural Water In Utah, Mark H. Anderson, Jay C. Andersen, John E. Keith, Calvin G. Clyde
Reports
Water is recognized as an essential element in Utah's agricultural economy. It is the subject of much controvery and litigation and yet most discussion of the subject is based on opinions and prejudice rather than upon the basis of sound scientific evidence. This paper attempts to provide some of the economic information necessary for sound decisions in the development and use of Utah's water resources with respect to agriculture. Utah has been divided into ten drainage regions (hydrologi subregions) and the presently irrigated and potentially irrigable land according to land class were estimated for each country or portion of a …
Hydrologic Inventory Of The Bear River Study Unit, Frank W. Haws
Hydrologic Inventory Of The Bear River Study Unit, Frank W. Haws
Reports
Purpose and Scope of Study.
The 1963 Utah State Legislature authorized the Utah Water and Power Board (now the Utah Division of Water Resources) to develop a state water plan in order to give coordination and direction to the activities of all state and federal agencies concerned with Utah's water resources. To facilitate the development of this plan, a proposal was submitted through the State Planning Coordinator in the Governor's Office to the Urban Renewal Administration of the Housing and Home Finance Agency. Funding was approved effective May 19, 1966, under the Urban Planning Assistance Program authorized by Section 701 …
Bibliography Of Latin American Agricultural Production And Development. Volume I: Inputs And Outputs In Crop And Livestock Production, Allen Lebaron, Samuel Daines, Percy Aitken, Ruby Johnson, Angeles Ely
Bibliography Of Latin American Agricultural Production And Development. Volume I: Inputs And Outputs In Crop And Livestock Production, Allen Lebaron, Samuel Daines, Percy Aitken, Ruby Johnson, Angeles Ely
Reports
No abstract provided.
A Review Of Utah Water Research Laboratory, Utah Water Research Laboratory
A Review Of Utah Water Research Laboratory, Utah Water Research Laboratory
Reports
No abstract provided.
Sorption Kinetics Part I: A Laboratory Investigation Of Six Proposed Rate Laws Using Batch Reactors, David W. Hendricks, Laxman G. Kuratti
Sorption Kinetics Part I: A Laboratory Investigation Of Six Proposed Rate Laws Using Batch Reactors, David W. Hendricks, Laxman G. Kuratti
Reports
Six proposed rate equations for sorption kinetics have been investigated by laboratory batch experiments involving some 270 individual “runs” to determine sorption uptake with time for varying conditions of initial sorbate concentration, temperature, and sorbent species. The sorbate selected was rhodamine-B dye, used because it will sorb readily and is easily measured. Two sorbents, Dowex 50 resin, and Filtrasorb 200 activated carbon were used. Temperature conditions were 10, 20, 30, and 40°C, and concentrations ranged from .0008 to 400 micrograms per ml, rhodamine-B. Analysis of data was computer automated, requiring as input only test conditions, instrument readings, dilutions, and corresponding …
Social, Economic, Environmental, And Technical Factors Influencing Water Reuse, A. Bruce Bishop, Suravuth Pratishthananda, John Keith, Craig Colton, A. Berry Crawford
Social, Economic, Environmental, And Technical Factors Influencing Water Reuse, A. Bruce Bishop, Suravuth Pratishthananda, John Keith, Craig Colton, A. Berry Crawford
Reports
A growing population together with rising per capita income has resulted in increased demand for water for virtually all uses. At the same time there has been increased public concern for maintaining the quality of streams for recreation, sight-seeing, and other social uses, and to conserve environmental values. A partial answer to these conflicts in water use and management is more extensive waste water reclamation and reuse. Heretofore, water salvage and reuse has been mainly practiced in specific operational cases, such as recycling industrial process water, or on an ad hoc basis, such as a series of diversions and subsequent …
Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, Peter L. Comanor
Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, Peter L. Comanor
Memorandum
No abstract provided.
Model Of Net Co2 Exchange Rate For C-4 Grasses, G. L. Cunningham, F. R. Balding, J. P. Syvertsen
Model Of Net Co2 Exchange Rate For C-4 Grasses, G. L. Cunningham, F. R. Balding, J. P. Syvertsen
Memorandum
No abstract provided.
Biomass And Nutrients In Desert Shrub Ecosystems, James O. Klemmedson, Edwin L. Smith
Biomass And Nutrients In Desert Shrub Ecosystems, James O. Klemmedson, Edwin L. Smith
Memorandum
No abstract provided.
Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, G. R. Mehuys, L. H. Stolzy, J. Letey Jr., L. V. Weeks
Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, G. R. Mehuys, L. H. Stolzy, J. Letey Jr., L. V. Weeks
Memorandum
No abstract provided.
Gas Exchange, Translocation And Root Growth Of Cold Desert Plants, M. M. Caldwell, H. H. Wiebe, E. J. Depuit, Osvaldo Fernandez, L. B. Camp, Marcee Fareed
Gas Exchange, Translocation And Root Growth Of Cold Desert Plants, M. M. Caldwell, H. H. Wiebe, E. J. Depuit, Osvaldo Fernandez, L. B. Camp, Marcee Fareed
Memorandum
No abstract provided.
Special Purpose Models, D. Wilkin
Demographic And Bioenergetic Studies Of Cutworms In Curlew Valley, W. J. Hanson, G. F. Knowlton
Demographic And Bioenergetic Studies Of Cutworms In Curlew Valley, W. J. Hanson, G. F. Knowlton
Memorandum
No abstract provided.
Population Studies Of The Desert Cottontail (Sylvilagus Auduboni) And Black-Tailed Jackrabbit (Lepus Californicus) In The Sonoran Desert, C.R. Hungerford, C.H. Lowe, R.L. Madsen
Population Studies Of The Desert Cottontail (Sylvilagus Auduboni) And Black-Tailed Jackrabbit (Lepus Californicus) In The Sonoran Desert, C.R. Hungerford, C.H. Lowe, R.L. Madsen
Memorandum
No abstract provided.
Foraging Activity Of The Leaf-Cutter Ant, Acromyrmex Versicolor, In Relation To Season, Weather And Colony Condition, F. G. Werner
Foraging Activity Of The Leaf-Cutter Ant, Acromyrmex Versicolor, In Relation To Season, Weather And Colony Condition, F. G. Werner
Memorandum
No abstract provided.
Measurements Of Carbon And Nitrogen Changes In Soil, Eugene E. Staffeldt, Kristina Bemond Vogt
Measurements Of Carbon And Nitrogen Changes In Soil, Eugene E. Staffeldt, Kristina Bemond Vogt
Memorandum
No abstract provided.
Distribution Of Mictroorganisms In Desert Soil, A.T. Vollmer, F. Au, S.A. Bamberg
Distribution Of Mictroorganisms In Desert Soil, A.T. Vollmer, F. Au, S.A. Bamberg
Memorandum
No abstract provided.
Growth And Development Of Sitanion Hystrix And Poa Sandbergii, M. Hironaka, E. W. Tisdale
Growth And Development Of Sitanion Hystrix And Poa Sandbergii, M. Hironaka, E. W. Tisdale
Memorandum
No abstract provided.
Terrestrial Models: Plant Processes (Version I, Ii, Iii), W. Valentine
Terrestrial Models: Plant Processes (Version I, Ii, Iii), W. Valentine
Memorandum
No abstract provided.
Tucson Validation Sites Report, John L. Thames
Consumption Of Larrea By Chewing Insects, F. G. Werner, A. R. Olsen
Consumption Of Larrea By Chewing Insects, F. G. Werner, A. R. Olsen
Memorandum
No abstract provided.
Respiratory Metabolism Of Utah Chub (Gila Atraria), R. H. Kramer, P. K. Rajagopal
Respiratory Metabolism Of Utah Chub (Gila Atraria), R. H. Kramer, P. K. Rajagopal
Memorandum
No abstract provided.
Annual Nutrient And Energy Intake Of The Desert Cottontail, Sylvilagus Auduboni, Under Natural Conditions, H G. Reynolds, F. J. Turkowski, R. M. Chew
Annual Nutrient And Energy Intake Of The Desert Cottontail, Sylvilagus Auduboni, Under Natural Conditions, H G. Reynolds, F. J. Turkowski, R. M. Chew
Memorandum
No abstract provided.
Sensitivity Analysis, I. Noy-Meir, D. Goodall
Distillation-Condensation Of Water And Nutrient Movement In A Desert Ecosystem, N. Stark
Distillation-Condensation Of Water And Nutrient Movement In A Desert Ecosystem, N. Stark
Memorandum
No abstract provided.
Biology Of Nematodes In Desert Ecosystems, R. Mankau, S. A. Sher, D. W. Freckman
Biology Of Nematodes In Desert Ecosystems, R. Mankau, S. A. Sher, D. W. Freckman
Memorandum
No abstract provided.
Diest, Food Preference And Reproductive Cycles Of Some Desert Rodents, Russell P. Balda, Clark E. Franz, O.J. Reichman, Kent M. Van De Graaff
Diest, Food Preference And Reproductive Cycles Of Some Desert Rodents, Russell P. Balda, Clark E. Franz, O.J. Reichman, Kent M. Van De Graaff
Memorandum
No abstract provided.