Digital Commons Network^™

Lecture Vs. Discussion In Teaching Biology For Tenth Grade Students In Saudi Arabia, Sultana Kaseem Ai-Faleh

Department of Agricultural Leadership, Education, and Communication: Dissertations, Theses, and Student Research

The primary purpose of this study was to determine if there were any significant differences between lecture and discussion methods with regard to students' learning achievement. There were three null hypotheses addressed by this study. Null hypothesis I was: there was no significant difference in the students' learning achievement with respect to either lecture or discussion methods. Null hypothesis II was: there was no significant difference between the students' pre-test scores and post-test scores. Null hypothesis III was: there were no differences in the students satisfaction with respect to the two teaching methods. Three teachers and 151 students in six …

The Influence Of Alfalfa Root Structure On Plains Pocket Gopher Damage And Behavior, Bruce A. Jasch

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Processing And Localization Of Dengue Virus Type 2 Polyprotein Precursor Ns3-Ns4a-Ns4b-Ns5, Luwen Zhang, P. Maruthi Mohan, R. Padmanabhan

Nebraska Center for Virology: Faculty Publications

Processing of dengue virus type 2 polyprotein precursor NS3-NS4A-NS4B-NS5 could be mediated by the catalytically active NS3 protease domain and NS2B in trans at the dibasic sites NS3-NS4A and NS4B-NS5. Subcellular localization of the unprocessed precursor NS3-NS4A-NS4B-NS5 showed that it was confined to a distinct subcellular organelle in the cytoplasm, which was distinct from the distribution of the mature NS5.

Densities Of Vegetable Oils And Fatty Acids, Hossein Noureddini, B C. Teoh, L Davis Clements

Papers in Biomaterials

Complete data for density as a function of temperature have been measured for a number of vegetable oils (cramhe, rapeseed, corn, soybean, milkweed, coconut, lesquerella), as well as eight fatty acids in the range CS to C,, at temperatures from above their melting points to llQ°C (23Q°F). The specific gravity and density measure mente were performed according to American Society for Testing and Materials (ASTM) standard test methods D 368, D 891 and D 1298 for hydrometers and a modified ASTM D 369 and D 891 for pycnometers. Correlation constants, based on the experimental data, are presented for calculating the …

Sediment Delivery On Rill And Interrill Areas, John E. Gilley, D. C. Kincaid, W. J. Elliot, J. M. Laflen

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Equations which relate sediment delivery to a power function of flow rate and slope gradient were calculated in this study. The data used to parameterize the calculations were obtained from sites where crop residues had been removed. and moldboard plowing and disking had occurred. Measurements of sediment delivery resulting from simulated rainfall were obtained from preformed rills and interrill areas. The equations provided reliable sediment delivery estimates for selected soils located throughout the United States. To use the sediment delivery equations, soil-related parameter values must be identified. Multiple regression analyses were performed to relate parameter values used in the equations …

The Entner-Doudoroff Pathway In Escherichia Coli Is Induced For Oxidative Glucose Metabolism Via Pyrroloquinoline Quinone-Dependent Glucose Dehydrogenase, Ronda Fliege, Suxiang Tong, Annemarie Shibata, Kenneth W. Nickerson, Tyrrell Conway

Papers in Microbiology

The Entner-Doudoroff pathway was shown to be induced for oxidative glucose metabolism when Escherichia coli was provided with the periplasmic glucose dehydrogenase cofactor pyrroloquinoline quinone (PQQ). Induction of the Entner-Doudoroff pathway by glucose plus PQQ was established both genetically and biochemically and was shown to occur in glucose transport mutants, as well as in wild-type E. coli. These data complete the body of evidence that proves the existence of a pathway for oxidative glucose metabolism in E. coli. PQQ-dependent oxidative glucose metabolism provides a metabolic branch point in the periplasm; the choices are either oxidation to gluconate followed …

Mutual Impacts Of Toughening On Crises And Losses, Richard A. Dienstbier

Department of Psychology: Faculty Publications

It is usually expected that if we are overwhelmed by an episode of crisis or loss that we may temporarily cope ineffectively, whereas when weare exposed to a sequence of challenges and stressors that are managable, we learn gradually to become better able to cope with such events. The "toughness" concept relates to analogous processes at the physiological level. The concept is based upon a wide variety of research with both animals and humans that is reviewed in detail elsewhere (Dienslbier, 1989). The focus of this chapter will instead be upon how toughness influences both physiological and psychological responses to …

Nebline, November 1992

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

Expanded Food and Nutrition Education Program (EFNEP) News

Extension Calendar

and other extension news

The Probe, Issue 127 - November 1992

The Probe: Newsletter of the National Animal Damage Control Association

Contents:

Principles of Wildlife Damage Management
CALENDAR OF UPCOMING EVENTS
ADC Personnel Changes
Publications Available
ADC Takes Leading Role in Educational Efforts
Cattle Losses to Predators in 1991
"ADC" — New Animal Damage Control Magazine
Maine Gull Project Shows Positive Results
Wolf Sightings in Yellowstone?

Wpa News 38 (1992), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (November 1992), number 38

Published by the World Pheasant Association

Katz Model Prediction Of Caenorhabditis Elegans Mutagenesis On Sts-42, Francis A. Cucinotta, John W. Wilson, Robert Katz, Gautam Badhwar

Robert Katz Publications

The Katz track structure model has been applied to describe recessive lethal mutagenesis in the nematode Caenorhabditis elegans after exposure to heavy ions. Based on models of the cosmic-ray environment and heavy-ion transport, mutation rates for the International Microgravity Laboratory 1 (IML-1) experiment on the Space Transportation System 42 (STS-42) are predicted and the results are discussed.

Profile: Gerald D. Schmidt (1934-1990), Scott Lyell Gardner, John E. Ubelaker

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Gerald D. Schmidt was born March 12, 1934 in Greeley, Colorado. After finishing his undergraduate degree in Biology at Colorado College in Greeley (now the University of Northern Colorado) Dr. Schmidt went on to receive his masters degree from Colorado State University (CSU) in 1962 and his PhD in 1964 also from CSU. While At CSU he worked under Dr. O. W. Olsen, first on the helminth parasites of the common snipe, and then, for his doctorate, he studied the embryological development of the Acanthocephala. He became a member of the faculty of UNC in Greeley In 1966. His collaboration …

Simulating Winter Wheat Shoot Apex Phenology , G. S. Mcmaster, Wallace Wilhelm, J. A. Morgan

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Simulation models are heuristic tools for integrating diverse processes and help to increase our understanding of complex processes and systems. Models that predict crop development can serve as decision-support tools in crop management. This paper describes a phenology simulation model for the winter wheat shoot apex and reports validation and sensitivity analysis results.

The complete developmental sequence of the winter wheat shoot apex is quantitatively outlined and correlated with commonly recognized phenological growth stages. The phyllochron is used to measure the thermal time between most phenological growth stages, thereby increasing the flexibility over the growing degree-day (GDD) and photothermal approaches. …

Insect, Plant Disease, And Weed Science News, No. 92-24, October 16, 1992, Alex Martin, Lisa Brown Jasa

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

Inside

Insect Science

Corn rootworm insecticide trials ………… 2-3

Agricultural Engineering

Stored grain investment ………… 5

Aeration grain drying ………… 5

Plant Disease

Late season soybean diseases ………… 7

Winter Meetings

CPMU ………… 2

Crop Protection Clinics ………… 2

Commercial applicator pesticide training ………… 4

Miscellaneous meetings ………… 7

His And Hers: Male And Female Anatomy In Anatomy Texts For U.S. Medical Students, 1890–1989, Susan C. Lawrence, Kae Bendixen

Department of History: Faculty Publications

Much recent work on gender has emphasized how ideas of male and female differences underlie cultural assumptions about appropriate social relations, behavior, institutions and knowledge. This study focuses on the specific ways that anatomy texts for medical students in the United States have presented male and female anatomy between 1890 and 1989, using both numerical data and analysis of textual examples from 31 texts. Despite public debates about gender representation, anatomy texts have generally remained consistent in how “the” human body has been depicted in this century. In illustrations, vocabulary and syntax, these texts primarily depict male anatomy as the …

The Muse: Resources For Faculty And Ta Newsletters, No. 5, Fall 1992

Professional and Organizational Development Network in Higher Education: Archives

A Primer for excellence: Attention to details can make a good newsletter great, by Linc. Fisch

Editors' musings: What do readers want?

Filings; Muse news to use: Reap the benefits of newsletter networking

Review of The Editorial Eye, by Ken Zahorski

Selecting quotations: Different voices, different viewpoints, by Laura L. B. Border

Supplement: Reaching Through Teaching, A NEWSLETTER HIGHLIGHTING CLASSROOM PHILOSOPHY AND PRACTICE AMONG KENNESAW FACULTY, VOLUME 6, NUMBER 1, FALL 1992:

WIGS, MORTARBOARDS AND OTHER TRADITIONS, by Don Forrester, Ed., Director of CETL

DR. ]0 ALLEN BRADHAM: 1992 DISTINGUISHED TEACHING AWARD RECIPIENT, by Kenneth P. Gilliam, Ph.D., Associate Professor …

Review Of Field Guide To Wildflowers Of Nebraska And The Great Plains, Roadside Wildflowers Of The Southern Great Plains, Wildflowers Of The Northern Great Plains, And Wildflowers Of The Tallgrass Prairie: The Upper Midwest., Kathleen H. Keeler

Great Plains Quarterly (through 2013)

These four flower books represent a blossoming of attractive popular books describing prairie plants. Each of these four books has a slightly different goal. In terms of area covered, Farrar focuses on Nebraska, Vance, Jowsey and Mclean consider plants of the northern Great Plains, Freeman and Schofield aim at roadside wildflowers of the southern Plains, and Runkel and Roosa on wildflowers of the northern tallgrass prairie. The types of plants included vary also. Farrar includes both common and rare Nebraska wildflowers but no shrubs or trees, Vance et al. include common native wildflowers, visible introduced species, and some woody plants. …

The Probe, Issue 126 - October 1992

The Probe: Newsletter of the National Animal Damage Control Association

Gray Wolf Management and Re-Establishment in North America
CALENDAR OF UPCOMING EVENTS
NADCA Annual Meeting to Be Held in Kansas City
Renew Your NADCA Membership
Colorado Court Dismisses Wolf Lawsuit
Pred-X Tags Prove Less than Successful for Nevada Sheep Producer
Trapping Course Becomes Mandatory in British Columbia
NADCA Assists in Animal Use Survey
Recent Publications of Interest
Conibear Traps for Woodchucks
Letters: Wolves, Coyotes, Etc
Education About Wildlife Damage Control Important

Dynamics Of The Parasite Assemblage Of Pimephales Promelas In Nebraska, Mary Ann Mcdowell, Michael T. Ferdig, John J. Janovy Jr.

John J. Janovy, Jr. Publications

Present theory states that in species-poor assemblages interactions among species are negligible and assemblage structure is a result of host/parasite interactions. A corollary to this theory is that parasite species assemblages should behave as accumulations of multiple-kind items drawn from a population in which only the relative probability of drawing each kind varies. This study was designed to test this prediction by comparing descriptor values, including diversity indices, species density values, equitability, and prevalence to those obtained from data produced by a Monte Carlo simulation model. The parasite assemblage consisted of 7 parasite species or types found in the fathead …

Larids, Scolopacids, And Passerines Exploiting Ephemeral Prey At Talan Island, Russia, Eric P. Hoberg, Alexander I. Kondratiev, Alexander S. Kitaysky

Harold W. Manter Laboratory of Parasitology: Faculty Publications

We report an unusual multispecies foraging assemblage that included larids, shorebirds and passerines which exploited a highly concentrated and ephemeral prey source over a period of three days in July and August 1988. During studies of breeding biology, food-habits and host-parasite ecology among a diverse colonial avifauna at Talan Island in the northern Sea of Okhotsk (59°18'N; 149°02'E) we observed the formation of mixed-species flocks during extreme high tides of July 31, August 1, and August 13, 1988.

The U.S. National Parasite Collection--A Century Of Service, J. Ralph Lichtenfels, P. A. Pilitt, Eric P. Hoberg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The U.S. National Parasite Collection will complete its first century of service to the field of animal parasitology in 1992. A brief history of the collection and a description of current policies on deposit and loan of specimens are provided. The collection, started in 1892 by Charles Wardell Stiles and Albert Hassall, now includes several constituent collections: The USNM Helminthological Collection, The USDA Parasite Collection, The Hoffman-Bangham Collection of Parasites of Freshwater Fish, and The Southeastern Cooperative Wildlife Diseases Study Collection of Parasites of White-tailed Deer. Major personal collections have been donated by F. W. Douvres, J. H. Fischthal, A. …

A New Species Of Linstowia (Cestoda: Anoplocephalidae) From Marsupials In Bolivia, Scott Lyell Gardner, Mariel L. Campbell

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A new species of cestode of the genus Linstowia (Cestoda: Anoplocephalidae) is described from marsupials of the genera Thylamys and Monodelphis. The new species (Linstowia schmidti) differs from L. iheringi Zschokke, 1904, in having a much smaller strobila and reduced number of proglottids, and in the distribution of the eggs in gravid proglottids. In Bolivia, cestodes of the genus Linstowia appear to have a restricted geographic distribution, occurring in marsupials only in southeastern Bolivia near the western margin of the Chaco. This host-parasite association may represent an ecological-historical relict.

Critical Comment: Designation And Curatorial Management Of Type Host Specimens (Symbiotypes) For New Parasite Species, Jennifer K. Frey, Terry L. Yates, Donald Duszynski, William L. Gannon, Scott Lyell Gardner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The accurate identification of a host organism is an important component in the taxonomic recognition of a new species of parasite. Correct identification, curatorial management, and safekeeping of the host specimen from which a parasite type specimen is collected is also desirable. We recommend that the host from which the type of a new parasite species is described should be designated as a symbiotype.

Gerald D. Schmidt From The Perspective Of A Graduate Student, Scott Lyell Gardner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A commemoration of Gerald D. Schmidt (1934-October 20, 1990), University of Northern Colorado professor and recipient of the Henry Baldwin Ward Medal.

Parasites Of The Extinct Shasta Ground Sloth, Nothrotheriops Shastensis, In Rampart Cave, Arizona, Gerald D. Schmidt, Donald W. Duszynski, Paul S. Martin

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Of 7 dissected dung balls of the extinct Shasta ground sloth (Edentata) from Rampart Cave, Arizona, 4 (57%) were found to contain nematode juveniles, helminth eggs, and/or coccidian oocysts. One dung ball was radiocarbon dated at 10,500 ± 180 yr, about the time of ground sloth extinction. It is supposed that the parasites also are extinct. Agamofilaria oxyura n. sp. is proposed for first-stage juveniles of an oxyurid. These juveniles measured 13-20 x 126-198 (16.8 x 159) μm. Strongyloides shastensis n. sp. is reported as first-stage juveniles, some of which clearly are molting. These juvenile worms were 23-27 …

New Distribution Records For Bunodera Eucaliae And Bunodera Inconstans N. Comb. (Digenea: Allocreadiidae: Bunoderinae) With Discussion Of Their Phylogenetic Relationships, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Bunodera eucaliae inhabits Culaea inconstans from eastern Ontario and western Nebraska, both new geographic distribution records. Culaeatrema inconstans inhabits Culaea inconstans from eastern Ontario, also a new distribution record. Comparison of Culaeatrema inconstans with species of Paracreptotrematina, Bunoderella, Bunodera, and Crepidostomum within a phylogenetic context suggests that it is the sister species of B. eucaliae. Accordingly, it is transferred to Bunodera, although the monophyly of Bunodera as a group has not yet been established because there is no synapomorphy linking Bunodera luciopercae with the clade containing Bunodera mediovitellata, Bunodera sacculata, B. eucaliae, …

Resource Tracking In North American Telorchis Spp. (Digenea: Plagiorchiformes: Telorchidae), Alison Radtke, Deborah A. Mclennan, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

We examine the evolution of host specificity for species of Telorchis, using the methods developed by researchers studying phytophagous insect-plant systems. Optimization of "generalist" compared with "specialist" onto the phylogeny for Telorchis revealed ambiguous patterns, depending on how the two terms were defined. Regardless of that definition, most of the evolutionary diversification of this group has been carried out within eucryptodiran turtles, the ancestral host group. From that plesiomorphic background, there appears to have been two episodes of specialization by way of a host switch into caudates (ancestor of T. stunkardi + T. sirenis) and snakes (T. …

Gerald D. Schmidt, Helminthologist, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Obituary of Gerald D. Schmidt, helminthologist.

Insect, Plant Disease, And Weed Science News, No. 92-22, September 25, 1992, Alex Martin, Lisa Brown Jasa

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

Inside

Plant Disease

Stem and pod diseases in soybeans …...... 2

Stalk rot in com …...... 3

Weed Science

Treatment suggestions for pesky perennials …...... 3

Insect Science

CPMU Dec. 3-4 …...... 4

Extension publications …...... 4

Notice Of Meetings For Museum Committee In 1992, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

No abstract provided.