Digital Commons Network^™

Roughness Coefficients For Selected Residue Materials, John E. Gilley, Eugene R. Kottwitz, Gary A. Wieman

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Analysis of surface runoff on upland areas requires identification of roughness coefficients. A laboratory study is conducted to measure Darcy-Weisbach and Manning roughness coefficients for corn, cotton, peanut, pine needles, sorghum, soybeans, sunflower, and wheat residue. Varying rates of flow are introduced into a flume in which selected amounts of residue are securely attached. Roughness coefficients are calculated from measurements of discharge rate and flow velocity. The laboratory data are used to derive regression equations for relating roughness coefficients to Reynolds number and either percent residue cover or residue rate. Separate equations are developed for Reynolds number values from 500 …

A Track Physics Model Of Radiation Action, Robert Katz

Robert Katz Publications

A model of radiation action by energetic heavy ions, inspired by a study of particle tracks in electron sensitive emulsion, has been successfully applied to many radiation effects in condensed matter, yielding quantitative descriptions and occasional predictions. Radiation effects are attributed primarily to secondary electrons. Each detector is imagined to be a collection of targets whose radiosensitivity is represented parametrically. We avoid a mechanistic description of detector response so as to retain the global character of the model. Attention is focused on the structure of particle tracks, on the radial deposition of dose about an ion’s path by “δ-rays,” and …

Syndisyrinx Evelinae (Marcus, 1968) N. Comb., From The Rock-Boring Urchin, Echinometra Lucunter, From St. Barthélemy, Lynn Ann Hertel, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The umagillid turbellarian Syndesmis evelinae, originally described from unnamed Caribbean sea urchins, is redescribed and placed in the genus Syndisyrinx. Syndisyrinx evelinae n. comb. was found in 8 of 32 (25%) Echinometra lucunter from the Bay of St. Jean, St. Barthélemy; 6 of the 8 (75%) urchins with S. evelinae also had Syndisyrinx collongistyla. The major difference between the original description and the worms described here is the structure of the bursal valve. The valve was originally described as having a thickness between the seminal receptacle and the seminal bursa; in fact, the bursal valve has 2 …

Proceedings International Sorghum And Millet Crsp Conference, Timothy Schilling, Gary Odvody, Gebisa Ejeta, Larry Claflin, Gary Peterson, Lloyd Rooney, Jerry Eastin, Joan Frederick

INTSORMIL Impacts and Bulletins

On behalf of the INTSORMIL Board of Directors, Principal Investigators and the Management Entity Office, it gives me great pleasure this moming to welcome you to this opening session of the 1991 INTSORMIL International SorghumIMlllet CRSP Conference.

INTSORMIL initiated the Biennial CRSP conference series in 1983. Attendance has grown with each meeting. Today we have 199 persons registered from 12 States in the U.S. and 27 different countries. There are representatives from three International Agricultural Research Centers (lCRISAT, IFPRI, and ICRISAT), four private seed companies and the U.S. National Grain Sorghum Producers Association (NGSPA).

I look around this audience and …

The Sower, Summer 1991

The Sower (CASNR Alumni Newsletter)

Contents:

The new image begins
Remodeling completed
The Prez Sez
Letters
Looking back. . .
News notes
Coming events
In Memoriam
Alumni Notes
A Semester at a time...
Carlson collects whatever
College Of Agricultural Sciences & Natural Resources Alumni Association (CASNRAA) Awards Program
It's a what ... ?

Nebraska Wetlands Priority Plan, Richard Gersib

Nebraska Game and Parks Commission: Staff Research Publications

Table of Contents:
Introduction
Methods
Results .S ite 1: Rainwater Basin Wetland Complex
Results - Site 2: Platte River Wetland Complex .B ig Bend Reach
Results - Site 3: Nebraska Sandhills Wetland Complex
Results - Site 4: Eastern Nebraska Saline Wetland
Results - Site 5: Missoun. Ri.v er Wetland Complex
Results - Site 6: Lower North Platte River Wetland Complex
Priority Assessment of Wetland Sites
Review, Revision and Definitions
References

Appendices
Emergency Wetlands Resources Act of 1986
Agencies and Organizations Reviewing The Nebraska Wetlands Priority Plan
Criteria For Identifying Wetlands Of International Importance And Guidelines on Their Use
Rainwater Basin …

The Inability Of Human Immunodeficiency Virus To Infect Chimpanzee Monocytes Can Be Overcome By Serial Viral Passage In Vivo, Howard Gendelman, Garth D. Ehrlich, Lisa M. Baca, Shawn Conley, Jorge Ribas, D. Chester Kalter, Monte S. Meltzer, Bernard J. Poiesz, Peter Nara

Nebraska Center for Virology: Faculty Publications

Studies of lentivirus infection in ruminants, nonhuman primates, and humans suggest that virus infection of macrophages plays a central role in the disease process. To investigate whether human immunodeficiency virus type 1 (HIV-1) can infect chimpanzee macrophages, we recovered monocytes from peripheral blood mononuclear cells of HIV-1-negative animals and inoculated these and control human monocytes with a panel of four human-passaged monocytotropic virus strains and one chimpanzee-passaged isolate. HIV-1-infected human monocytes synthesized proviral DNA, viral mRNA, p24 antigen, and progeny virions. In contrast, except for the chimpanzee-passaged HIV-1 isolate, chimpanzee monocytes failed to support HIV-1 replication when cultured under both …

Survivorship And Recruitment In A Long-Lived Prairie Perennial, Ipomoea Leptophylla (Convolvulaceae), Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

Little is known of the lifespans of herbaceous plants, especially in grasslands, although this information is basic to understanding the dynamics of species and ecosystems. Permanently marked plants of the bush morning glory, Ipomoea leptophylla (Convolvulaceae), in Nebraska sandhills prairie were censused annually from 1979-1989. While the average annual death rate was 2.6 per 100, virtually all the mortality was among smaller and probably younger plants. Recruitment varied greatly among years. Of plants of known age, the median age at first flowering was 6 yr. After 9 yr 30% had never flowered. Larger size classes flowered more frequently than smaller …

Mate Choice In Lekking Sage Grouse Revisited: The Roles Of Vocal Display, Female Site Fidelity, And Copying, Robert M. Gibson, Jack W. Bradbury, Sandra L. Vehrencamp

School of Biological Sciences: Faculty Publications

In lekking sage grouse (Centrocercus urophasianus), females exhibit relatively unanimous mate choice for particular males, but a satisfactory explanation for this unanimity has been elusive. We present analyses of mating distributions from two leks over 4 years that provide evidence for female choice based on differences in vocal display performance of males, the locations at which hens mated in the previous year, and the choices of other females (copying). The unanimity of female choice varied markedly among leks and years in correlation with changes in the mean numbers of hens that mated at the same time and hence …

Nutritional Complementation Of Oxidative Glucose Metabolism In Escherichia Coli Via Pyrroloquinoline Quinone-Dependent Glucose Dehydrogenase And The Entner-Doudoroff Pathway, Michael Adamowicz, Tyrrell Conway, Kenneth W. Nickerson

Papers in Microbiology

Two glucose-negative Escherichia coli mutants (ZSC113 and DF214) were unable to grow on glucose as the sole carbon source unless supplemented with pyrroloquinoline quinone (PQQ). PQQ is the cofactor for the periplasmic enzyme glucose dehydrogenase, which converts glucose to gluconate. Aerobically, E. coli ZSC113 grew on glucose plus PQQ with a generation time of 65 min, a generation time about the same as that for wildtype E. coli in a defined glucose-salts medium. Thus, for E. coli ZSC113 the Entner-Doudoroff pathway was fully able to replace the Embden-Meyerhof-Parnas pathway. In the presence of 5% sodium dodecyl sulfate, PQQ no longer …

Use Of Pollen Concentration In Paleopharmacology: Coprolite Evidence Of Medicinal Plants, Karl Reinhard, Donny L. Hamilton, Richard H. Hevly

Karl Reinhard Publications

Nearly 2,400 plant species have been documented ethnographically as having medicinal value among Native Americans. Therefore, it is not surprising that evidence of medicinal plants appears in some of the over 1,000 coprolites analyzed from the southwestern U.S. Three medicinal species identified in pollen analysis of coprolites are discussed. Willow (Salix) is the most common analgesic in the Native American pharmacopoeia. Prehistoric use of this plant is documented in coprolites from Bighorn Cave in the Black Mountains of Arizona and also in a burial from the Mimbres Valley, New Mexico. Historically, Mormon tea (Ephedra) served as …

Agricultural Research Division 105th Annual Report 1991

Agricultural Research Division: News and Annual Reports

It is a pleasure to provide the 105th Annual Report of the UNL Agricultural Research Division (ARD). This report contains lists of current faculty; active research projects; refereed journal articles, books and book chapters, and theses and dissertations published; germplasm/cultivars released; and patents awarded. Also included are brief descriptions of selected research and the financial report for the period July 1, 1990, through June 30,1991. This report was compiled in compliance with the intent of the law of the State of Nebraska that established the Nebraska Agricultural Experiment Station on March 31, 1887.

Foreword ... 5

Research Highlights ... 6 …

Tractor Museum Committee Establishment 1991, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

No abstract provided.

Insect, Plant Disease, And Weed Science News, No. 91-12, June 14, 1991, Alex Martin, Bob N. Stougarrd, Lisa Brown Jasa

Insect, Plant Disease, and Weed Science News (1987-1992)

In this issue

Plant Disease

Wheat scab found in central Nebraska disease survey …………..67

Leaf spot on sugar beets …………..67

Small grain disease update………….. 68

Wettable powder Benlate now available …………..68

Corn anthracnose leaf symptoms reported in Iowa …………..69

Insect Science

First generation European corn borers: When is treatment necessary …………..69

Management worksheet …………..70

Wait to re-enter after insecticides …………..71

Pesky moths return………….. 71

Grasshopper deadline near …………..71

ECB software training available …………..71

Weed Science

Consider whole field when choosing herbicide………….. 72

Replant options for corn, sorghum………….. 72

Nebline, June 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news

Agricultural Experiment Station News June 1991

Agricultural Research Division: News and Annual Reports

CONTENTS:
EMPHASIS ON EXCELLENCE
UPDATE ON RESEARCH PROJECTS
ARD ACTION PLANS
NATURAL GAS MAIN INSTALLATION AT ARDC/MEAD
AGRICULTURAL RESEARCH DIVISION CURRENT GRANTS & AWARDS
ARD Administered Grants and Awards Summary
NEW OR REVISED PROJECTS
GRANT AND CONTRACT INCOME DURING THE LAST THREE CALENDAR YEAR EXPRESSED ON DOLLARS PER RESEARCH FTE BASIS
GRANTS AND CONTRACTS RECEIVED APRIL & MAY, 1991

The Amateur: Finding A Niche In Ornithology, Harold F. Mayfield

Nebraska Bird Review

The older branches of science were all pioneered by amateurs, but as they matured they have moved steadily away from the reach of the individual working alone with his own resources. As the need for laboratories, observatories, and support staff have grown, science has become increasingly the province of professionals and institutions.

In ornithology, however, the amateur is still a significant figure. Perhaps no other branch of science owes so much to the amateur, not only in current contributions, but also in continuing to produce the professionals of the future. Can we think of another field where we could make …

Nocturnal Roosting By Interior Least Terns Early In The Nesting Season, Erika C. Wilson, Wayne A. Hubert, Stanley H. Anderson

Nebraska Bird Review

Atwood (1986) described nocturnal communal roosting by the California Least Tern (Sterna antillarum browni). Such behavior has not been described in other Least Tern subspecies (Whitman, 1988).

Nocturnal roosting by Interior Least Terns (Sterna antillarum athalassos) was observed on each of three evenings between 23 and 31 May 1989 and once on 15 May 1990 when we observed a known nesting location. Least Terns congregated immediately before sunset and started flying in pairs or small groups with much vocalization. Occasionally all birds joined into one compact flock exhibiting synchronized flight as observed by Atwood (1986). With …

Notes From Nebraska Bird Review (June 1991)

Nebraska Bird Review

Some Nest Box Observations. The following are some observations on nests of species who use bluebird boxes in the Gering area. Anyone else working on a bluebird project who would like to add their observations in a future NBR is invited to do so.

Bluebirds make a nest that consists primarily of grasses. There are seldom any feathers. Well-used ones are plastered with droppings, although I suppose the droppings could also come if they use the box for roosting in bad weather. As far as I know there is no way to tell the difference between Mountain and Eastern …

Nebraska Bird Review Whole Issue (June 1991)

Nebraska Bird Review

Table of Contents

Greater Scaup in Lancaster County ..................38

Black-bellied Plover in Buffalo County ..................38

The Amateur: Finding a Niche in Ornithology ..................39

Nocturnal Roosting by Interior Least Terns Early in the Nesting Season ..................42

Confirmed Whooping Crane Sightings, 1942-1982 ..................43

Fall 1990 Occurrence Report: Update ..................45

1991 NOU Annual Meeting ..................48

Notes ..................49

Book Reviews ..................51

The Prairie Naturalist Volume 23, No. 2. June 1991

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Sea bloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

SMALLMOUTH BASS SIZE STRUCTURE AND CATCH RATES IN FIVE SOUTH DAKOTA LAKES AS DETERMINED FROM TWO SAMPLING GEARS ▪ C. L. Milewski and D. W. Willis

REPRODUCTION BY FISHES IN A HEADWATER STREAM FLOWING INTO GRAYROCKS RESERVOIR, WYOMING ▪ W. A. Hubert and D. T O’Shea

ENVENOMATION AND ACQUISITION OF CHEMICAL INFORMATION BY PRAIRIE RATTLESNAKES ▪ D. Chiszar, C. Hobika, H. M. Smith, and J. Vidaurri

MOVEMENTS AND HABITAT USE BY WILD TURKEY HENS WITH BROODS IN A GRASSLAND-WOODLAND MOSAIC IN THE NORTHERN …

Rediscovery Of Romulus Globosus Knull (Coleoptera: Cerambycidae), M. C. Thomas

Insecta Mundi

One of the rarest U.S. cerambycids, Romulus globosus, was described by Knull in 1948 based on four specimens collected in peninsular Florida. No new records have been reported in the literature since. Linsley (1963) apparently saw no specimens, since he merely quoted the original description, and gave the distribution as "Southern Florida."

Transactivation Of The Human Immunodeficiency Virus Promoter By Human Herpesvirus 6 (Hhv-6) Strains Gs And 2-29 In Primary Human T Lymphocytes And Identification Of Transactivating Hhv-6(Gs) Gene Fragments, Rebecca Horvat, Charles Wood, Steven Josephs, N. Balachandran

Nebraska Center for Virology: Faculty Publications

Human herpesvirus 6 (HHV-6) can activate the human immunodeficiency virus (HIV) promoter and accelerate cytopathic effects in HIV-infected human T cells. This study examines the regions of the HIV promoter required for HHVd transactivation in a heterogeneous population of primary human T lymphocytes with or without antigenic stimulation. Two different strains of HHV-6, GS and 229, transactivated the HIV promoter. The GS strain transactivated the promoter in both stimulated and resting T cells, while the 229 strain increased HIV promoter activity only in stimulated T cells. Three DNA clones containing HHV-6(GS) genomic fragments transactivated the HIV promoter in cotransfected T …

The Probe, Issue 111 - June 1991

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
JUNE 1991
Animal Damage Control: Are We Prepared for the Next Century?
Animal Damage Control in the News
Jack Rabbit Population Fluctuates in Cyclical Patterns
Recovery Efforts for Ohio Warblers
Viscachas – New Garden Pests
Great Blue Heron Wipes Out Bass Brood Fish in Louisiana
48 Lambs Lost to Coyote Predation in Marin County, California
Measures Suggested to Prevent Gopher Damge to Underground Optic Cables
Wildlife Pamphlets to Display APHIS Logo
Rat Rodenticide Tested at DWRC, Hawaii Field Station
Prevention and Control Tips: Opossums
Registration Data Call-in For Zinc Phosphide
EPA Approves Quarterly …

Water Current, Volume 23, June 1991

Water Current Newsletter

NGF Awards Received by Spaldings at Banquet
Water-Related Action in the 1991 Session of the Nebraska Legislature
From the Director: There's Good News and Bad News
Water Topics Included in New Acquisitions
Bob Volk Receives Award
All Wells in Basin Should be Regulated
News to Use
Center Pivot Industry in Nebraska Recognized with Awards
Water Quality Research Site in Nebraska Differs
More Emphasis on Water Quality Research, Federal Official
Colorado, Wyoming, Nebraska Irrigation Tour Destinations
Projects Funded Here with USGS Grants
York Recharge Project Dedicated by Dignataries and Guests
Nearly 4,500 Chemigation Applicators Certified in Two Years
Nitrate-Groundwater Contamination a …

Transactivation Of The Human Immunodeficiency Virus Promoter By Human Herpesvirus 6 (Hhv-6) Strains Gs And Z-29 In Primary Human T Lymphocytes And Identification Of Transactivating Hhv-6(Gs) Gene Fragments, Rebecca Horvat, Charles Wood, Steven Josephs, N. Balanchandran

Nebraska Center for Virology: Faculty Publications

Human herpesvirus 6 (HHV-6) can activate the human immunodeficiency virus (HIV) promoter and accelerate cytopathic effects in HIV-infected human T cells. This study examines the regions of the HIV promoter required for HHV-6 transactivation in a heterogeneous population of primary human T lymphocytes with or without antigenic stimulation. Two different strains of HHV-6, GS and Z29, transactivated the HIV promoter. The GS strain transactivated the promoter in both stimulated and resting T cells, while the Z29 strain increased HIV promoter activity only in stimulated T cells. Three DNA clones containing HHV-6(GS) genomic fragments transactivated the HIV promoter in cotransfected T …

Insect, Plant Disease, And Weed Science News, No. 91-10, May 24,1991, Alex Martin, Bob N. Stougarrd, Lisa Brown Jasa

Insect, Plant Disease, and Weed Science News (1987-1992)

In this issue

Insect Science

Corn, sorghum pests move into southern Nebraska ……………….. 55

Cutworms ……………….. 55

Greenbugs ……………….. 55

Be alert to bean leaf beetles in soybeans ……………….. 56

Furadan 15G uses cut ……………….. 56

Plant Disease

Powdery mildew coming on strong in wheat ……………….. 57

Turf also showing the effects of powdery mildew ……………….. 57

Coziahr to leave Plant Disease Clinic ……………….. 57

EBDC fungicide update ……………….. 58

Federal tests indicate most foods free of pesticides ……………….. 58

Weed Science

Options cited for postemergence broadleaf control ……………….. 58

Accent and Beacon prevail over shattercane ……………….. 59

HI-DEP used …

Comment On “Microdosimetry And Katz’S Track Structure Theory” By Marco Zaider, Robert Katz

Robert Katz Publications

To test radiobiological models one needs data from X- or γ-ray and HZE track segment irradiations of the widest possible dynamic range in dose, LET, end points, and test objects (enzymes, viruses, bacteria, cells, tissues, organs, and organisms). Some data are currently available. There are excellent data on the inactivation of dry enzymes and viruses which should serve as a test of every biophysical model. On many occasions Zaider has asserted the superiority of microdosimetric over track structure models, asserting that “radial dose distributions (on which track structure theory is based) are generally poor substitutes for exact microdosimetric distributions.” I …

Nebline, May 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news

The Probe, Issue 110 - May 1991

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
MAY 1991
NADCA News From Great Plains Wildlife Damage Control Workshop
Student Awards Presented
By-laws Amended, Approved
Bill Fitzwater Recognized at NADCA Meeting
Membership Contest to Begin
Logo Contest to Begin
ADC Practices Are Generally Consistent With Legislation and Guidance
Animal Damage Control in the News
Mountain Lions Kill 10 Sheep in Nevada
Snow Geese Devastate Oklahoma Spinach Crop
Coyotes Troubling To Idaho Homeowners
Predator Platforms Deter Honey-Seeking Bears
Nutria Cause Major Damage in Sugar Cane
Mountain Lion Appears in Irvine, California Backyard
WLFA Wants to Protect “Your Right to Hunt, Trap, and …