Life Sciences Commons^™

River Flows And Water Wars: Emerging Science For Environmental Decision Making, N. Leroy Poff, J. David Allan, Margaret A. Palmer, David D. Hart, Brian D. Richter, Angela H. Arthington, Kevin H. Rogers, Judy L. Meyer, Jack Arthur Stanford

Biological Sciences Faculty Publications

Real and apparent conflicts between ecosystem and human needs for fresh water are contributing to the emergence of an alternative model for conducting river science around the world. The core of this new paradigm emphasizes the need to forge new partnerships between scientists and other stakeholders where shared ecological goals and river visions are developed, and the need for new experimental approaches to advance scientific understanding at the scales relevant to whole-river management. We identify four key elements required to make this model succeed: existing and planned water projects represent opportunities to conduct ecosystem-scale experiments through controlled river flow manipulations; …

Prevalence Of Overweight In Preschool Children And The Association With Dietary And Lifestyle Factors, Anthony H. Ng

All-Inclusive List of Electronic Theses and Dissertations

For the past several decades, there has been a steady increase in obesity in the United States. National surveys indicate that 64% of American adults are overweight or obese and more than 1 0% of preschool children are overweight. This study determined the prevalence of overweight in a group of preschool children aged between three and five years at a Head Start Center and evaluated the relationship of specific lifestyle factors between caregivers and their children and the relationship of these patterns to the development of overweight. The caregivers were asked to complete a questionnaire, which assessed specific dietary and …

Ard News August 2003

Agricultural Research Division: News and Annual Reports

CONTENTS:

Comments from the Dean
Nebraska Research Initiative FY 2004
Layman Awards
Widaman Trust Distinguished Graduate Assistant Award
Shear-Miles Fellowship 2003-2004
Hardin Distinguished Graduate Fellowship for 2003-2004
John and Louise Skala Fellowship 2003-
AI Moseman International Studies Fund 2003-2004
William G. Whitmore Student Travel Endowment
David H. and Annie E. Larrick Fund 2003-2004
Proposals Submitted for Federal Grants
Undergraduate Honors Research Program
Grants and Contracts Received June and July, 2003
New or Revised Projects
Federal Research Budget for FY 2003
Adoption of Biotechnology- Enhanced Craps in the Cornbelt
Certified Organic Acreage of Selected Craps by State - 2001

Lipopolysaccharide Induced Septicemia In Chronic Morphine Treated Rats, Frank Ocasio

Seton Hall University Dissertations and Theses (ETDs)

Opiate-addicts have been known to show increased susceptibility to bacterial infection. Lipopolysaccharide (LPS), which is a cell wall component in gram-negative bacterial, is a potent stimulator of inflammation. We investigated how treatment with morphine alters LPS-induced inflammatory responses in the rat. Chronic morphine exposure alone elevated serum endotoxin levels. Animals treated with morphine and LPS (250 µglkg) developed hypothermia, decreased mean arterial pressure (MAP), increased plasma thrombin anti-thrombin III (TAT) complex, and approximately 67% exhibited progressive intramicrovascular coagulation. Morphine also enhanced LPS­ induced leukocyte endothelial adhesion (LEA), suppressed leukocyte flux and corticosterone production, and elevated interleukin- I�, tumor necrotic factor-a, …

Forage News [2003-08], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Forages at KCA
• Seeding Cool Season Grasses
• Tall Fescue Response to Nitrogen Fertilization for Stockpiled Grazing
• Extending the Grazing Season
• Round Bale Silage
• Does Grazing Management Impact the Production and Winter Survival of Annual Ryegrass?
• Upcoming Events

Cardiac Acceleration As A Marker Of Vagal Withdrawal In Heart Rate Control During Exercise In Humans, S S I Bokhari, H R. Ahmad, M M F Subhan, S A. Ali, M N. Khan

Department of Biological & Biomedical Sciences

Objective: To investigate whether the time rate of change in heart rate i.e. cardiac acceleration, during aerobic exercise in human subjects could be used to differentiate vagal withdrawal from sympathetic stimulation.Methods: Fifteen male subjects exercised on a bicycle ergometer at 50 Watts (Step 1), then 100 Watts (Step 2), for 2 minutes each.Results: Heart rate (HR) was monitored from a resting value (mean +/- SD) of 80.3 +/- 12.9 to 113.8 +/- 13.6 beats min-1 in Step 1. In Step 2 exercise, HR increased from 113.8 +/- 13.6 to 145 +/- 20 beats min-1. At the initiation of Step 1, …

Sustainable Agricultural Growth In The Al-Ahsa Oasis Of Saudi Arabia: Harmonizing Wto Goals, Environmental Constraints, And National Food Security Issues, Ahmad Mohammad Al-Mass

All-Inclusive List of Electronic Theses and Dissertations

Local agricultural practices in Saudi Arabia today are shaped by local land, labor, and technological conditions, by national governmental regulations, subsidies, and price controls, and by the global impacts of foreign competition and goals of international organizations such as the World Trade Organization (WTO). Human and natural forces over which local oasis residents have no control exert more influence upon their social and economic life than do daily agricultural tasks. These forces are recognized by Saudi national planners, for agricultural development is very important to the government and to oasis dwellers in Saudi Arabia. Reducing the loss of foreign exchange, …

Nebraska Farm Real Estate Market Developments 2002-03, Bruce Johnson, Glenn A. Helmers

Nebraska Farm Real Estate Reports

For the year ending February 1, 2003, Nebraska's agricultural land values showed a slight over-all increase of just over 1 percent; but with considerable variation across the State and by type of land. Based on UNL's 2003 Nebraska Farm Real Estate Market Survey, sub-state regional all-land changes ranged from a 6.6 percent decline in the Southwest to gains of 4.6 percent for the 12-month period in the Cental and East. The relative severity of the prolonged drought during 2002 appears to be a contributing factor to these regional value patterns. Similarly, drought impacts resulted in considerable variations in value changes …

2001 Coastal Illicit Connection Identification And Elimination Grant Project, Andrea F. Donlon

PREP Reports & Publications

This final report describes a grant program funded by NHEP and administered by DES. A Memorandum of Agreement (MOA) between NHEP and DES created a grant program to provide assistance to coastal communities to identify and eliminate illicit discharges into the storm drain system. A total of $60,000 was available for grants to municipalities. DES issued a request for proposals (RFP), chose grant recipients, and managed the grant agreements. This report provides details on the projects completed by Exeter, Dover, and Somersworth. The deadline for completion of all grant projects was June 30, 2003

Inside Unlv, Gian Galassi, Carol C. Harter, Gale Sinatra

Inside UNLV

No abstract provided.

Water—More Than Just A Refreshing Beverage, Winston J. Craig

Lake Union Herald

No abstract provided.

Receptor Activation Regulates Cortical, But Not Vesicular Localization Of Ndp Kinase, Betty C. Gallagher, Kimberly A.P. Mitchell, Gabor Szabo, Angela De S. Otero

Faculty Publications and Presentations

We used immunofluorescence techniques to determine the localization of nucleoside diphosphate (NDP) kinase in NIH-3T3 fibroblasts. We found that cytoplasmic NDP kinase can be separated into two populations according to subcellular localization and response to extracellular stimuli. Specifically, within minutes of stimulation of resting fibroblasts with serum, growth factors or bombesin, a portion of NDP kinase becomes associated with membrane ruffles and lamellipodia. Another pool of NDP kinase accumulates independently of stimulation around intracellular vesicles. Transfection of cells with activated Rac mimics, whereas expression of dominant negative Rac inhibits, the effects of extracellular stimulation on the translocation of NDP kinase …

Summer 2003, Nsu Oceanographic Center

Currents

No abstract provided.

Nebline, August 2003

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Lessons Learned Through Garbology
Pesticide Disposal Collection Aug. 18
Deadline Approaches to Terminate Verbal Farm Leases
Nebraska Fence Viewer Statutes Cover Fence Issues
Fertilizing Crop Land with Biosolids
West Nile Virus is of Concern to Horse Owners During the Summer
Growing Conifers from Seed
Water Trees According to Soil Type
Recognizing Tree Hazards
Healthy Eating: Enjoy Nebraska Foods
Freezing Peppers and Tomatoes
Teaching Proper Hand Washing to School Children
FREE class: Healthy Cooking for 1 or 2
Web Resources of the Month
Lines from Lynn
Household Hints
September Council Meeting
Achievement Meeting
Leader Training
Re-Organizational Packets
Five Steps to a …

Whallwachsia Illuminata N. Gen., N. Sp. (Trematoda: Digenea: Plagiorchiformes: Prosthogonimidae) In The Steely-Vented Hummingbird Amazilia Saucerrottei (Aves: Apodiformes: Trochilidae) And The Yellow-Olive Flycatcher Tolmomyias Sulphurescens (Aves: Passeriformes: Tyraninidae) From The Área De Conservación Guanacaste, Guanacaste, Costa Rica, David Zamparo, Daniel R. Brooks, Douglas Causey

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A new species of digenean found in the intestines of the steely-vented hummingbird Amazilia saucerrottei and the yellow-olive flycatcher Tolmomyias sulphurescens from the Área de Conservación Guanacaste, Guanacaste, Costa Rica, resembles members of the Prosthogonimidae in having a highly lobate ovary; an elongate cirrus sac containing the cirrus, pars prostatica, and internal seminal vesicle; no external seminal vesicle; two fields of extracecal vitelline follicles restricted to the area between the intestinal bifurcation and testes; and uterine loops occupying all available space in the hind body. The new species differs from all other members of the family in having genital pores …

Boltzmann Machine Learning With The Latent Maximum Entropy Principle, Shaojun Wang, Dale Schuurmans, Fuchun Peng, Yunxin Zhao

Kno.e.sis Publications

We present a new statistical learning paradigm for Boltzmann machines based on a new inference principle we have proposed: the latent maximum entropy principle (LME). LME is different both from Jaynes maximum entropy principle and from standard maximum likelihood estimation. We demonstrate the LME principle BY deriving new algorithms for Boltzmann machine parameter estimation, and show how robust and fast new variant of the EM algorithm can be developed. Our experiments show that estimation based on LME generally yields better results than maximum likelihood estimation, particularly when inferring hidden units from small amounts of data.

Learning Mixture Models With The Latent Maximum Entropy Principle, Shaojun Wang, Dale Schuurmans, Fuchun Peng, Yunxin Zhao

Kno.e.sis Publications

We present a new approach to estimating mixture models based on a new inference principle we have proposed: the latent maximum entropy principle (LME). LME is different both from Jaynes’ maximum entropy principle and from standard maximum likelihood estimation. We demonstrate the LME principle by deriving new algorithms for mixture model estimation, and show how robust new variants of the EM algorithm can be developed. Our experiments show that estimation based on LME generally yields better results than maximum likelihood estimation, particularly when inferring latent variable models from small amounts of data.

Field Observations Of Intraspecific Agonistic Behavior Of Two Crayfish Species, Orconectes Rusticus And Orconectes Virilis, In Different Habitats, Daniel A. Bergman, Paul A. Moore

Peer Reviewed Articles

Agonistic behavior is a fundamental aspect of ecological theories on resource acquisition and sexual selection.

Crustaceans are exemplary models for agonistic behavior within the laboratory, but agonistic behavior in natural habitats is often neglected. Laboratory studies do not achieve the same ecological realism as field studies. In an attempt to connect laboratory results to field data and investigate how habitat structure affects agonistic interactions, the nocturnal behavior of two crayfish species was observed by scuba diving and snorkeling in two northern Michigan lakes. Intraspecific agonistic interactions were analyzed in three habitats: two food resources—macrophytes and detritus—and one sheltered habitat. The …

Field Observations Of Intraspecific Agonistic Behavior Of Two Crayfish Species, Orconectes Rusticus And Orconectes Virilis, In Different Habitats, Dan A. Bergman, Paul A. Moore

Peer Reviewed Articles

Agonistic behavior is a fundamental aspect of ecological theories on resource acquisition and sexual selection. Crustaceans are exemplary models for agonistic behavior within the laboratory, but agonistic behavior in natural habitats is often neglected. Laboratory studies do not achieve the same ecological realism as field studies. In an attempt to connect laboratory results to field data and investigate how habitat structure affects agonistic interactions, the nocturnal behavior of two crayfish species was observed by scuba diving and snorkeling in two northern Michigan lakes. Intraspecific agonistic interactions were analyzed in three habitats: two food resources—macrophytes and detritus—and one sheltered habitat. The …

Overproduction And Analysis Of Eukaryotic Multiprotein Complexes In Escherichia Coli Using A Dual-Vector Strategy, Jeff Finkelstein, Edwin Antony, Manju M. Hingorani, Michael O’Donnell

Biological Sciences Faculty Research and Publications

Biochemical studies of eukaryotic proteins are often constrained by low availability of these typically large, multicomponent protein complexes in pure form. Escherichia coli is a commonly used host for large-scale protein production; however, its utility for eukaryotic protein production is limited because of problems associated with transcription, translation, and proper folding of proteins. Here we describe the development and testing of pLANT, a vector that addresses many of these problems simultaneously. The pLANT vector contains a T7 promoter-controlled expression unit, a p15A origin of replication, and genes for rare transfer RNAs and kanamycin resistance. Thus, the pLANT vector can be …

Diverse Sequences Within Tlr Elements Target Programmed Dna Elimination In Tetrahymena Thermophila, Jeffrey D. Wuitschick, Kathleen M. Karrer

Biological Sciences Faculty Research and Publications

Tlr elements are a novel family of ~30 putative mobile genetic elements that are confined to the germ line micronuclear genome in Tetrahymena thermophila. Thousands of diverse germ line-limited sequences, including the Tlr elements, are specifically eliminated from the differentiating somatic macronucleus. Macronucleusretained sequences flanking deleted regions are known to contain cis-acting signals that delineate elimination boundaries. It is unclear whether sequences within deleted DNA also play a regulatory role in the elimination process. In the current study, an in vivo DNA rearrangement assay was used to identify internal sequences required in cis for the elimination of Tlr elements. Multiple, …

Fall Calving In The Intermountain West, Dale R. Zobell, Craig Burrell, Darrell Rothlisberger, Eleanor Jenson

All Current Publications

Fall calving has been practiced by beef producers for many years, although in small numbers relative to spring calving. The spring calf crop has been a traditional event for most beef producers and probably will continue to be. There are distinct advantages, however, to fall calving which producers could take advantage of. The potential for higher conception and weaning rates, price premiums and the elimination of calf scours are among the reasons some beef producers have switched from spring calving their herd to fall calving.

Forage Kochia For Fall/Winter Grazing, D. R. Zobell, B. L. Waldron, K. C. Olson, R. D. Harrison, H. Jensen

All Current Publications

Winter feeding costs have often been cited as one of the most expensive aspects of beef cattle production in the Intermountain West. Research and rancher experience suggests that using forage kochia for fall/winter grazing may help reduce these costs.

B.R. Wells Rice Research Studies 2002, R. J. Norman, J.-F. Meullenet

Arkansas Agricultural Experiment Station Research Series

Arkansas is the leading rice producing state in the U .S .. representing almost 46% of the total U .S. production and almost 47% of the total acres planted to rice . Rice cultural practices vary across the state and across the U.S. However, due to changing political, environmental, and economic times, the practices arc dynamic. This survey was initiated in 2002 to monitor how the changing times reflect the changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county Extension agents in each of the counties in Arkansas that produce rice. Questions …

Prey Nutritional Quality Interacts With Chemical Defenses To Affect Consumer Feeding And Fitness, Edwin Cruz-Rivera, Mark E. Hay

Faculty Publications

Numerous studies have assessed the individual effects of prey nutritional quality or chemical defenses on consumer feeding behavior. However, little is known about how these traits interact to affect consumer feeding and performance. We tested the separate and interactive effects of prey chemical defenses and nutritional quality on the feeding behavior and fitness of six sympatric crustacean mesograzers. Natural concentrations of diterpene alcohols (dictyols) from the brown alga Dictyota menstrualis were incorporated, or not incorporated, into lower quality and higher quality foods to create artificial diets mimicking prey of variable value and defense. Five amphipods (Ampithoe longimana, A. valida, Cymadusa …

Potato Production (Indonesian Version), Peter Dawson, Ian Mcpharlin, Malcolm Howes

Bulletins 4000 -

No abstract provided.

Information On Pastoral Businesses In The Rangelands Of Western Australia, Department Of Agriculture, Western Australia

Farm Systems and Economics published reports

Edited by William Dalton and Francis Bright

The rangelands make up 87 per cent of Western Australia's landmass and include all but the south-west of the State. Livestock grazing on pastoral leasehold is the dominant commercial land use across 42 per cent (910,000 km*) of the WA rangelands and unallocated Crown lands comprise another 37 per cent.

The rangelands:

• Produce most of the State's mineral and energy wealth.

• Support important segments of the livestock industry.

• Are of special significance to the Aboriginal population.

• Offer major tourism potential.

• Contain essential elements of the State's biological diversity.

• Offer opportunities to produce horticultural …

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The Effect Of Active Exercise On Rectus Femoris Cooling Time, Blaine C. Long

All-Inclusive List of Electronic Theses and Dissertations

Context: The ability for cryotherapy to influence subcutaneous temperature has mainly been considered during resting skeletal muscle. However, most injuries occur when subcutaneous temperatures have been physically active. Objective: The purpose of this study was to evaluate the effect of ice on exercised rectus femoris musculature and the effect of exercise on cooling rectus femoris musculature to 1 0°C below resting temperature. Design and Setting: Two 2 x 2 repeated measures designs were used. The study was conducted in the Sports Injury Research Laboratory at Indiana State University. Subjects: Six (age= 26.0 ± 3.2 yrs, ht = 181.6 ± 2.4cm, …

Certified Athletic Trainers' Knowledge And Perception Of Professional Preparation Involving Eating Disorders Among Athletes, Emily Jo Reliford

All-Inclusive List of Electronic Theses and Dissertations

Context: It was unclear in the current research how Certified Athletic Trainers (ATC) perceived their professional preparation about eating disorders and disordered eating. Objective: To establish how ATCs perceived their professional preparation and educational background in managing eating disorders. Design and Setting: A 42 item web based survey was specifically created for this study and disseminated to certified members of the NATA. Subjects: The survey was disseminated to 14,477 certified NATA members. The response rate was 13.6% (n=l 966) with a mean age 31.87±7.82. Measurements: This survey consisted of an 11 question demographics section, 13 Likert ( 1-7) scale questions, …

External Ankle Stablization: Male High School Basketball Players' Perceptions On Functional Performance, Renae E. Bomar

All-Inclusive List of Electronic Theses and Dissertations

Objective: The purpose of this study was to measure and report athletes' perceptions of the effects an external ankle support has on functional performance, and to gain knowledge ofwhat type of ankle support the athletes choose to wear. Design and Setting: A questionnaire containing demographic information and 4 construct areas was designed to focus on assessing high school male basketball players' perception of functional performance while wearing an external ankle support. Survey p~ckets were sent to high school certified athletic trainers (ATCs) to be distributed to each male basketball player. Subjects: Approximately 770 surveys were sent out to ATCs in …