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Articles 1501 - 1530 of 1646

Full-Text Articles in Oceanography and Atmospheric Sciences and Meteorology

Volume 3, Number 9 (September 1979), The Solar Ocean Energy Liaison Sep 1979

Volume 3, Number 9 (September 1979), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.


Volume 3, Number 8 (August 1979), The Solar Ocean Energy Liaison Aug 1979

Volume 3, Number 8 (August 1979), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.


Water, Waste And Quality Management During Preparation And Processing Of Vegetables, W. A. Sistrunk Aug 1979

Water, Waste And Quality Management During Preparation And Processing Of Vegetables, W. A. Sistrunk

Arkansas Water Resources Center Technical Reports

The research was designed to test and/or develop new systems of washing, peeling and blanching, develop methods of utilization of solid wastes, and find ways to reduce wastestrength of effluent without affecting quality of vegetables for processing. The highest wastestrength of effluent from vegetable processing in the region was found in plants that were canning Irish potatoes, dry beans and hominy. The high volumes of water used for washing spinach and leafy greens and the physical damage to the washed product is one of the major problems. Repetitive washing of spinach in the same water did not affect quality as …


Volume 3, Number 7 (July 1979), The Solar Ocean Energy Liaison Jul 1979

Volume 3, Number 7 (July 1979), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.


Volume 3, Number 6 (June 1979), The Solar Ocean Energy Liaison Jun 1979

Volume 3, Number 6 (June 1979), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.


Volume 3, Number 5 (May 1979), The Otec Liaison May 1979

Volume 3, Number 5 (May 1979), The Otec Liaison

The OTEC Liaison

No abstract provided.


Volume 3, Number 4 (April 1979), The Otec Liaison Apr 1979

Volume 3, Number 4 (April 1979), The Otec Liaison

The OTEC Liaison

No abstract provided.


Study Of Cumulative Growth-Inhibiting Factors In Recycled Water For Catfish Cultivation, R. W. Raible Apr 1979

Study Of Cumulative Growth-Inhibiting Factors In Recycled Water For Catfish Cultivation, R. W. Raible

Arkansas Water Resources Center Technical Reports

Channel catfish were grown in tanks with integral biological filters and complete recirculation of water. After the fish had resided in the tanks for 120 days, solvent extraction was performed on a portion of the tank water. Fresh pond-raised specimen channel catfish showed decreases in their heartbeat rates of about 20 percent when exposed to the extract. This metabolic disturbance is thought to be a factor in reducing the growth rate of fish held in close confinement in recirculating systems.


Changing Fields: Agricultural Land Use Changes In Nebraska 1925-1974, Donald A. Wilhite Apr 1979

Changing Fields: Agricultural Land Use Changes In Nebraska 1925-1974, Donald A. Wilhite

National Drought Mitigation Center: Faculty Publications

The series of graphs and maps which follow illustrate agricultural land use changes in Nebraska from 1925 to 1974. With these graphs and maps, the major agronomic crops of corn (dryland and irrigated), wheat, sorghum and soybeans are analyzed. The purpose of this analysis is to provide a pictorial history of Nebraska's ever-changing cropping system and, hopefully, to stimulate ideas and discussion with regard to trends and future directions. The Nebraska Water Resources Center is deeply interested in both the past and the future of Nebraska's agriculture because of the demands which agriculture places on the state's water resources. An …


Volume 3, Number 3 (March 1979), The Otec Liaison Mar 1979

Volume 3, Number 3 (March 1979), The Otec Liaison

The OTEC Liaison

No abstract provided.


Volume 3, Number 2 (February 1979), The Otec Liaison Feb 1979

Volume 3, Number 2 (February 1979), The Otec Liaison

The OTEC Liaison

No abstract provided.


Volume 3, Number 1 (January 1979), The Otec Liaison Jan 1979

Volume 3, Number 1 (January 1979), The Otec Liaison

The OTEC Liaison

No abstract provided.


Turbulence Spectra Above A Vegetated Surface Under Conditions Of Sensible Heat Advection, Raymond P. Motha, Shashi B. Verma, Norman J. Rosenberg Jan 1979

Turbulence Spectra Above A Vegetated Surface Under Conditions Of Sensible Heat Advection, Raymond P. Motha, Shashi B. Verma, Norman J. Rosenberg

National Drought Mitigation Center: Faculty Publications

Spectra of vertical and horizontal velocity, air temperature and humidity fluctuations were analyzed from measurements made over a well-watered alfalfa crop under conditions of sensible heat advection. Vertical velocity and air temperature spectra as well as cospectra of momentum, sensible heat and water vapor were found to be dependent on atmospheric thermal stratification. These spectra and cospectra were shifted toward higher frequencies under advective as compared to lapse conditions. These results indicate that the predominant eddy sizes are relatively smaller under advective conditions. Humidity spectra, on the other hand, were independent of daytime thermal stratification conditions but were influenced by …


Volume 2, Number 12 (December 1978), The Otec Liaison Dec 1978

Volume 2, Number 12 (December 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


Volume 2, Number 11 (November 1978), The Otec Liaison Nov 1978

Volume 2, Number 11 (November 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


A Limnological Study Of Ricks Pond And The Gulpha Creek Drainage In Garland County, Arkansas, Tom M. Buchanan, James Houston, Joe F. Nix, Richard L. Meyer, Eugene H. Schmitz Nov 1978

A Limnological Study Of Ricks Pond And The Gulpha Creek Drainage In Garland County, Arkansas, Tom M. Buchanan, James Houston, Joe F. Nix, Richard L. Meyer, Eugene H. Schmitz

Arkansas Water Resources Center Technical Reports

A limnological investigation of Ricks Pond and the Gulpha Creek drainage of Garland County, Arkansas was conducted between 1 June 1978, and 21 August 1978. Water samples taken from ten stations on three different dates indicated that the stream and pond systems were typical in water quality characteristics of other small, high gradient streams and impoundments in the Ouachita Mountains of Arkansas. In Ricks Pond, thermal stratification occurred along with the development of an oxygen deficient zone below a depth of one meter. Other water quality parameters indicated that Ricks Pond is a moderately productive ecosystem, with the productivity limited …


Volume 2, Number 10 (October 1978), The Otec Liaison Oct 1978

Volume 2, Number 10 (October 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


Volume 2, Number 9 (September 1978), The Otec Liaison Sep 1978

Volume 2, Number 9 (September 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


Hydrolytic And Photochemical Degradation Of Organophosphorus Pesticides, James F. Hinton Sep 1978

Hydrolytic And Photochemical Degradation Of Organophosphorus Pesticides, James F. Hinton

Arkansas Water Resources Center Technical Reports

To keep pace with demands for increasing food supplies to satisfy the expanding world population, modern agriculture has utilized the latest scientific and technological knowledge available. Increases in crop production through the use of growth regulators, fertilizers , herbicides, and insecticides have been little short of phenomenal, and drugs, feed additives, and higher-quality grain and forage have dramatically increased livestock production. But, as is usually the case, this progress has been accompanied by problems, one of the more serious being contamination of our environment by chemicals. Only in recent years have the full effects of these pollutants on the ecological …


Volume 2, Number 8 (August 1978), The Otec Liaison Aug 1978

Volume 2, Number 8 (August 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


The Effects Of Heavy Metals On Algae Populations In A South Central Reservoir, Richard L. Meyer Aug 1978

The Effects Of Heavy Metals On Algae Populations In A South Central Reservoir, Richard L. Meyer

Arkansas Water Resources Center Technical Reports

The present investigation examines seasonal variations of algal assemblages in a south-central reservoir, Lake Fayetteville, Arkansas, in an attempt to evaluate the role of various trace metals in relation to these seasonal variations. Iron, manganese, cobalt, copper, lead and zinc concentrations were evaluated for the period of one year from March, 1976 to March, 1977 with concomitant examination of alga] assemblages. In addition to collection of this material, correlations between specific taxa and metals in the water fraction have been evaluated. A detailed literature review dealing with the role of micronutrients in various algal groups has been discussed by Rice …


Volume 2, Number 7 (July 1978), The Otec Liaison Jul 1978

Volume 2, Number 7 (July 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


Apis: Arkansas Planning Information System, William R. Draper, David B. Beasley, Theo A. Dillaha Iii, Ronald W. Skeith Jul 1978

Apis: Arkansas Planning Information System, William R. Draper, David B. Beasley, Theo A. Dillaha Iii, Ronald W. Skeith

Arkansas Water Resources Center Technical Reports

The Federal Water Pollution Control Act Amendments of 1972 call for the restoration and maintenance of the chemical, physical and biological integrity of the Nation's waters. The Act sets forth two primary goals; 1) the elimination of the discharge of all pollutants into the navigable waters of the United States by 1985 and 2) an interim level of water quality that provides for the protection of fish, shellfish, wildlife and recreation by July 1, 1983. Section 208 of the Act mandated the development and implementation of area wide water quality management plans to achieve the goals previously mentioned.


Volume 2, Number 6 (June 1978), The Otec Liaison Jun 1978

Volume 2, Number 6 (June 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


A Primary Ecological Survey Of Dardanelle Reservoir Prior To Nuclear Facility Effluent Discharge, Clarence B. Sinclair, Robert L. Watson Jun 1978

A Primary Ecological Survey Of Dardanelle Reservoir Prior To Nuclear Facility Effluent Discharge, Clarence B. Sinclair, Robert L. Watson

Arkansas Water Resources Center Technical Reports

A preliminary ecological survey of Dardanelle Reservoir during the construction phase of Arkansas Power and Light Company's nuclear generating facility was conducted from January 1970 through June 1974. The reservoir is characterized by relatively shallow depths and a high flow-thru rate. A number of features were associated with these characteristics. The reservoir carried a great deal of suspended material and exhibited high turbidities throughout most of the year. Typical thermal stratification and oxygen depletion were only rarely observed. Many of the physico-chemical parameters exhibited relatively high values in comparison to other Arkansas lakes and reservoirs, but due to absence of …


Volume 2, Number 5 (May 1978), The Otec Liaison May 1978

Volume 2, Number 5 (May 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


Zooplankton Limnology Of Beaver And Degray Reservoirs In Arkansas, Eugene H. Schmitz May 1978

Zooplankton Limnology Of Beaver And Degray Reservoirs In Arkansas, Eugene H. Schmitz

Arkansas Water Resources Center Technical Reports

Research during the year 1975-76 continued to emphasize studies of seasonal changes in patterns of zooplankton abundance and biomass in Beaver and DeGray Reservoirs. Zooplankton samples were taken monthly from three stations on Beaver Reservoir (Figure 1) during the period May 1975 through May 1976. Collections from DeGray Reservoir were made weekly from a single station (Station 1) during the period April 1975 through December 1975. Beaver collections were obtained by taking oblique tows using a Miller sampler equipped with no. 10 mesh. The DeGray program entailed stratified vertical samples taken at 5 intervals to 20 a and 20 m …


Volume 2, Number 4 (April 1978), The Otec Liaison Apr 1978

Volume 2, Number 4 (April 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


Volume 2, Number 3 (March 1978), The Otec Liaison Mar 1978

Volume 2, Number 3 (March 1978), The Otec Liaison

The OTEC Liaison

No abstract provided.


Extreme Evapotranspiration By Irrigated Alfalfa: A Consequence Of The 1976 Midwestern Drought, Norman J. Rosenberg, Shashi B. Verma Feb 1978

Extreme Evapotranspiration By Irrigated Alfalfa: A Consequence Of The 1976 Midwestern Drought, Norman J. Rosenberg, Shashi B. Verma

National Drought Mitigation Center: Faculty Publications

The rate of evapotranspiration by irrigated alfalfa at Mead, NE (41°09'Nj 96°30'W, elevation 354 m) reached record levels in 1976. Evapotranspiration was measured with precision weighing lysimeters in a field 1.9 ha in size. Evapotranspiration ranged during the growing season from 4.75 to 14.22 mm day-l and exceeded 10 mm day-I on one-third of the days studied. On each day of study the ratio of latent heat flux density (LE) to the sum of the net radiation and soil heat flux densities (Rn+S) was such that LE/ (Rn+S) > 1, indicating the occurrence of significant …