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1984

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Full-Text Articles in Life Sciences

Northeast Research Station Watertown, South Dakota Annual Progress Report, 1984, Agricultural Experiment Station, Plant Science Department Dec 1984

Northeast Research Station Watertown, South Dakota Annual Progress Report, 1984, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1984 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes information on the 1984 crop season, climate data, planting dates, potato fertility, spring wheat breeding, oats research, alfalfa variety trials, weed control in sunflowers, sunflower testing, 1985 research plans.


An Analysis Of The Effect Of Network Load And Topology On The Performance Of Concurrency Control Algorithm In Distributed Database Systems, Anoop Singhal, Amit P. Sheth, Ming T. Liu Dec 1984

An Analysis Of The Effect Of Network Load And Topology On The Performance Of Concurrency Control Algorithm In Distributed Database Systems, Anoop Singhal, Amit P. Sheth, Ming T. Liu

Kno.e.sis Publications

Earlier studies in the performance analysis of concurrency control algorithms in distributed database systems (DDBS) have assumed that the message transmission time between any two nodes of a network is constant. Hence they disregard the effect of communication subnet related parameters such as network traffic, network topology, the capacity of transmission channels and the size of messages transmitted. In this paper an analytical model is used to estimate the delays in transmission channels for a DDBS in a long haul network. The analysis shows that the constant transmission time assumption cannot be justified in many cases and that response time ...


Animals In Testing: How The Cpi Is Handling A Hot Issue, Anonymous Dec 1984

Animals In Testing: How The Cpi Is Handling A Hot Issue, Anonymous

Popular Press Items

No abstract provided.


Characterization Of Kpni Interspersed, Repetitive Dna Sequence Families And Their Association With The Nuclear Matrix, Joseph A. Chimera Dec 1984

Characterization Of Kpni Interspersed, Repetitive Dna Sequence Families And Their Association With The Nuclear Matrix, Joseph A. Chimera

Electronic Theses and Dissertations

The KpnI, 1.2 and 1.5 kb families of interspersed repetitive DNAs from the African green monkey genome were isolated and characterized. Each family contains three populations of segments based on their sequence lengths and susceptibility to cleavage by the restriction enzymes KpnI and RsaI. The first population contains the smallest segments which are susceptible to both KpnI and RsaI cleavage and have fragment lengths of 1.2 kb (1.2 kb family) and 1.5 kb (1.5 kb family) respectively. The members in this population are referred to as KpnI-sensitive segments. The second population contains longer segments ...


The 1984 Iowa Corn Yield Test Report, District 1, K. E. Ziegler Dec 1984

The 1984 Iowa Corn Yield Test Report, District 1, K. E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-fifth consecutive year for the test.


The 1984 Iowa Corn Yield Test Report, District 4, K. E. Ziegler Dec 1984

The 1984 Iowa Corn Yield Test Report, District 4, K. E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-fifth consecutive year for the test.


The 1984 Iowa Corn Yield Test Report, District 6, K. E. Ziegler Dec 1984

The 1984 Iowa Corn Yield Test Report, District 6, K. E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-fifth consecutive year for the test.


The 1984 Iowa Corn Yield Test Report, District 3, K. E. Ziegler Dec 1984

The 1984 Iowa Corn Yield Test Report, District 3, K. E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-fifth consecutive year for the test.


The 1984 Iowa Corn Yield Test Report, District 7, K. E. Ziegler Dec 1984

The 1984 Iowa Corn Yield Test Report, District 7, K. E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-fifth consecutive year for the test.


Southeast South Dakota Experiment Farm Annual Progress Report, 1984, Agricultural Experiment Station Dec 1984

Southeast South Dakota Experiment Farm Annual Progress Report, 1984, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This twenty-fourth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, crop rotation, sorghum, small grains, livestock, and pest control.


The 1984 Iowa Corn Yield Test Report, District 5, K. E. Ziegler Dec 1984

The 1984 Iowa Corn Yield Test Report, District 5, K. E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-fifth consecutive year for the test.


The 1984 Iowa Corn Yield Test Report, District 2, K. E. Ziegler Dec 1984

The 1984 Iowa Corn Yield Test Report, District 2, K. E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-fifth consecutive year for the test.


Bud Ontogeny In Nondefoliated And Defoliated Abies Balsamea At The Ultrastructural Level, Buhari Anthony Oyofo Dec 1984

Bud Ontogeny In Nondefoliated And Defoliated Abies Balsamea At The Ultrastructural Level, Buhari Anthony Oyofo

ETD Collection for AUC Robert W. Woodruff Library

The purpose of this study was to determine whether defoliation, a condition of stress caused by Choristoneura fumiferana herbivory, induces a disturbed pathologic condition in presumably normal tissue produced by the affected balsam fir trees.

Techniques used in this investigation included dry weight determination, light microscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and biochemical and physical analyses.

Terminal branch sections that contained shoots with buds and needles were cut from the upper crown on opposite sides of the tree.

Collections were made from several previously selected trees in Vermont during April, June and July. The collected materials were ...


Performance Of Soybean Varieties In 1984, University Of Tennessee Agricultural Experiment Station, Charles R. Graves Dec 1984

Performance Of Soybean Varieties In 1984, University Of Tennessee Agricultural Experiment Station, Charles R. Graves

Research Reports

No abstract provided.


Isolation And Characterization Of Clostridium Thermocellum, Yupha Vatcharapijarn Dec 1984

Isolation And Characterization Of Clostridium Thermocellum, Yupha Vatcharapijarn

ETD Collection for AUC Robert W. Woodruff Library

The study and isolation of strains of thermophilic anaerobic bacteria, Clostridium thermocellum. has been widely committed. The isolation of six strains of Clostridium thermocellum from samples representing a variety of environments were conducted. They were characterized as to growth rate, production of reducing sugars, ethanol and acetaic acid production from cellulose, base composition of DNA and the presence of plasmid DNA.

Results show that considerable differences exist among strains with regard to growth rate and ability to solubilize cellulose. However, they were all remarkably similar in ethanol production which was similar to a standard laboratory strain of these species. The ...


Effects Of Catechol On The Ultrastructure Of Poria Obiliqa And Phialophora Melinii, Salem Abubaker Tawila Dec 1984

Effects Of Catechol On The Ultrastructure Of Poria Obiliqa And Phialophora Melinii, Salem Abubaker Tawila

ETD Collection for AUC Robert W. Woodruff Library

No abstract provided.


West River Agricultural Research And Extension Center Progress Report, 1984, Agricultural Experiment Station Dec 1984

West River Agricultural Research And Extension Center Progress Report, 1984, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1984 annual progress report of the West River Crops Soils Research and Extension Center, South Dakota Agricultural Experiment Station. This report includes: a weather summary, small grain variety trials, sorghum variety testing, management, tillage and cultural practices, weed control research, and small grain varietal descriptions.


Temperature-Dependent Model For Sorghum Midge (Diptera: Cecidomyiidae) Spring Emergence, Frederick P. Baxendale, G. L. Teetes, P. J. H. Sharpe Dec 1984

Temperature-Dependent Model For Sorghum Midge (Diptera: Cecidomyiidae) Spring Emergence, Frederick P. Baxendale, G. L. Teetes, P. J. H. Sharpe

Faculty Publications: Department of Entomology

A temperature-dependent, two-component model, based on constant-temperature development data, was formulated which described the emergence of overwintered sorghum midges, Contarinia sorghicola (Coquillett) in the field. The first model component used a poikilotherm rate equation to predict emergence rates as a function of temperature. The second component distributed emerging adults over normalized time using a temperature- independent cumulative Weibull distribution. When coupled, components formed a temperature-dependent simulation model which described the spring emergence of overwintered midges from 1979 to 1982. The model tended to predict emergence before it actually occurred in the field. This discrepancy was corrected by incorporating a 1 ...


Temperature-Dependent Model For Development Of Nondiapausing Sorghum Midges (Diptera: Cecidomyiidae), Frederick P. Baxendale, G. L. Teetes, P. J. H. Sharpe, H. Wu Dec 1984

Temperature-Dependent Model For Development Of Nondiapausing Sorghum Midges (Diptera: Cecidomyiidae), Frederick P. Baxendale, G. L. Teetes, P. J. H. Sharpe, H. Wu

Faculty Publications: Department of Entomology

Constant-temperature development data were used to construct a temperature- dependent, two-component model for the development of nondiapausing sorghum midges, Contarinia sorghicola (Coquillett), from egg to adult emergence. When constant temperatures were between 20 and 36°C, nondiapausing midges completed development and emerged as adults. Development times decreased as temperature increased. Above 34°C, however, development times increased and numbers of emerged adults declined. A coupled poikilotherm rate equation and cumulative Weibull distribution provided accurate descriptions of the developmental data. Model simulations compared favorably with observed emergence of adult midges from johnsongrass and sorghum in the field throughout the season.


Ard News December 1984 Dec 1984

Ard News December 1984

Agricultural Research Division News & Annual Reports

CONTENTS:
PRODUCTION RESEARCH PERSPECTIVE
JOINT COUNTY PRIORITIES
WATER RESOURCES CENTER PROPOSALS
NEW FACULTY APPOINTMENTS
BIOTECHNOLOGY PROGRESS REPORT
PART-TIME CSRS APPOINTMENTS
OFFICIAL IANR LOGO
PROGRESS ACCOMPLISHMENT REPORT
STEPS TO STAGNATION
AMERICAN AGRICULTURE
RESEARCH GRANTS AND CONTRACTS RECEIVED NOVEMBER 1984
CANCER AND SMOKING DISEASE RESEARCH ANNOUNCEMENT OF FY 1915-15 REQUESTS FOR APPLICATION
NEW PROJECT


1984 Fall Field Day Dec 1984

1984 Fall Field Day

Nebraska Bird Review

The 1984 Fall Field Day was held (officially) from noon to noon, 6/7 October, at the4-H Camp at Halsey National Forest. The weather was not the best—light rain early Saturday morning, only a couple of short showers in the afternoon, and no rain Sunday, both days dull and gray. But the attendance was good—87 were officially registered—but the added manpower could not make up for the lateness in the season and the poor weather—the tally on or near the Forest was only 81. In addition, 4 species (marked N) not recorded in the Forest were ...


Masthead From Nebraska Bird Review (December 1984) 52(4) Dec 1984

Masthead From Nebraska Bird Review (December 1984) 52(4)

Nebraska Bird Review

Published quarterly in March, June, September, and December by the Nebraska Ornithologists' Union, Inc., as its official journal and sent free to all members who are not in arrears for dues. Subscriptions (on calendar year basis only) are $7.00 per year in the United States and $9.00 per year in all other countries payable in advance. Single copies are $2.25 each, postpaid.

Memberships (on a calendar year basis only): Student, $.3.00; Active, $7.00; Sustaining, $15.00; Family Active, $10.00; Family Sustaining, $20.00; Life, $100.00.

All dues and subscriptions should be remitted to ...


Index To Volume 52 Dec 1984

Index To Volume 52

Nebraska Bird Review

Accipiter sp. 14

Adcock, Dorothy 18, 58

Alexander, George 17

Irene 17

Alfred, Norris 3, 23, 56

Allison, Mary 18

Anderson, RoseAnn 17

Sheridan 17

Ardinger, Bruce 18

Arrowhead (plant) 21

Avocet, American 6, 30, 55(2), 76

. . .

Yellowlegs, Greater 6, 30, 55, 60, 70, 71

Lesser 6, 30, 55, 70, 71

Yellowthroat, Common 11, 33, 40, 41, 50, 64

Zeillemaker, C. Fred 26, 28(6), 29(4), 30(5), 31(3), 32(6), 33, 34(5)

Melly 26


“Notes” From Nebraska Bird Review (December 1984) 52(4) Dec 1984

“Notes” From Nebraska Bird Review (December 1984) 52(4)

Nebraska Bird Review

EARLY NESTING WOOD DUCKS. On 7 May 1983 I found a female Wood Duck with newly hatched ducklings at Cedar Island, a property along the Platte River in Sarpy County owned by Metropolitan Utilities District.—Ruth C. Green, Bellevue

GREAT CRESTED FLYCATCHER NEST. On 20 June 1984 I saw Great Crested Flycatchers nesting in a bluebird box. This was at Beaver Lake, Cass Co.—Ruth C. Green, Bellevue

LAZULI BUNTING. I saw a male Lazuli Bunting by the railroad tracks at the foot of Child’s Hollow in Fontenelle Forest, Sarpy County, on 14 May 1984.—Ray Korpi, Bellevue

GOLDEN-CROWNED ...


Nesting Common Moorhen In Lancaster County, William C. Garthright Dec 1984

Nesting Common Moorhen In Lancaster County, William C. Garthright

Nebraska Bird Review

On 6 July 1984, at 6 PM CDT, I saw a Common Moorhen at the Capitol Beach marsh, in Lincoln. It was about 10 yards to the north when I first saw it, and I could see the red facial shield and red bill with yellow tip, the yellow legs, a thin white horizontal line along the side, and prominent white patches along either side of dark undertail coverts. It acted mildly agitated, and swam away from me but stayed in the vicinity.

At 7 the next morning I waded into the pond at that spot. This time I saw ...


Soil Physical Characteristics Of Reduced Tillage In A Wheat-Fallow System, L. N. Mielke, Wallace Wilhelm, K. A. Richards, C.R. Fenster Dec 1984

Soil Physical Characteristics Of Reduced Tillage In A Wheat-Fallow System, L. N. Mielke, Wallace Wilhelm, K. A. Richards, C.R. Fenster

Publications from USDA-ARS / UNL Faculty

Soil physical characteristics of reduced tillage for fallow-wheat (Triticum aestivum L.) were compared for two soils in western Nebraska. The soil physical environment influences the amount of water that enters soil, the availability of water for plants, and the microenvironment important to soil biological processes. Fallow tillage (plow, subtill, no till) did not affect bulk density in Alliance silt loam (fine silty, mixed mesic, Aridic Argiustolls). For Duroc loam (fine silty, mixed mesic Pachic Haplustolls), in which native sod was compared to the above three wheat-fallow tillage methods, numerous effects on soil physical properties were found. Reduced tillage reduced bulk ...


Effects Of Space Shuttle Exhaust Plumes On Gills Of Some Estuarine Fishes: A Light And Electron Microscopic Study, William E. Hawkins, Robin M. Overstreet, Mark J. Provancha Dec 1984

Effects Of Space Shuttle Exhaust Plumes On Gills Of Some Estuarine Fishes: A Light And Electron Microscopic Study, William E. Hawkins, Robin M. Overstreet, Mark J. Provancha

Faculty Publications from the Harold W. Manter Laboratory of Parasitology

The first few launches of the space shuttle resulted in fish kills in a lagoon near the launch site. To study this phenomenon further, sheepshead minnow (Cyprinodon variegatus), sailfin molly (Poecilia latipinna), and mosquitofish (Gambusia affinis) were exposed to the exhaust plume in buckets placed near the launch site. An open bucket provided a full exposure, a partly closed one provided an intermediate exposure, and a closed one was the control. Three h after launch, the pH of the water from the full exposure had decreased from about 7 to about 3, Al and Fe levels had increased, and some ...


Regurgitation By The Face Fly, Musca Autumnalis Degeer, Russell E. Coleman Dec 1984

Regurgitation By The Face Fly, Musca Autumnalis Degeer, Russell E. Coleman

Masters Theses

Face flies normally began regurgitating within 10 minutes after feeding, and continued for periods of up to 240 minutes. Almost 100 percent of flies fed a concentrated (4.8%) solution of trypticase-soy broth were observed regurgitating. The deposition of droplets onto a substrate was almost never observed, indicating that the regurgitation is not analogous to vomiting. The droplet exuded contained from five to ten percent of the food consumed, with the crop the source of the fluid. The crop is also the most likely destination of the regurgitated materiel. The purpose of this phenomenon is still not clear. However, the ...


Vegetation Patterns In Relation To Topography And Edaphic Variation Nebraska Sandhills Prairie, P. W. Barnes, A. T. Harrison, S. P. Heinisch Dec 1984

Vegetation Patterns In Relation To Topography And Edaphic Variation Nebraska Sandhills Prairie, P. W. Barnes, A. T. Harrison, S. P. Heinisch

Faculty Publications in the Biological Sciences

Detailed studies on soil texture and moisture retention indicate a close association between edaphic features and the distribution and composition of plant communities along topographic gradients at Arapaho Prairie, a typical, semi-arid Nebraska Sandhills prairie. The vegetation characteristics of three major habitat types (ridge, slope, and valley) and several minor subtypes (swale, stable ridge, and eroding ridge) are recognized and quantitatively described. Texture analysis indicates that the soils of dune slopes and ridges are largely azonal and are very coarse with substantially lower fine fractions (silt-clay ~ 13-15%) than soils of the more lowland swale and valley sites where surfact silt-clay ...


History And Distribution Of Brook Trout In The Appalachian Region Of Tennessee, Rick Dwain Bivens Dec 1984

History And Distribution Of Brook Trout In The Appalachian Region Of Tennessee, Rick Dwain Bivens

Masters Theses

Brook trout (Salevlinus fontinalis) populations have been declining in the southern Appalachians and especially in Tennessee since 1900. To assess the loss of range of this southern trout, various agencies have inventoried most of the major trout streams in Tennessee over the past 10 years. To date, however, these surveys have remained disjunct and in some cases overlapping.

Survey reports and field data of brook trout inventories made from 1974 to 1984 were examined to determine the current distribution in Tennessee. Brook trout currently inhabit 275.6 kilometers in 135 streams found in eight east Tennessee counties. Brook trout occur ...