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2001

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Articles 1 - 30 of 3191

Full-Text Articles in Life Sciences

Deletions In The 7a Orf Of Feline Coronavirus Associated With An Epidemic Of Feline Infectious Peritonitis, Melissa Kennedy, N Boedeker, P Gibbs, Stephen Kania Mar 2012

Deletions In The 7a Orf Of Feline Coronavirus Associated With An Epidemic Of Feline Infectious Peritonitis, Melissa Kennedy, N Boedeker, P Gibbs, Stephen Kania

Stephen A Kania

A population of Persian cats experienced an epidemic of feline infectious peritonitis (FIP) over 2 years. Twelve cases of FIP occurred in litters born during this period. Cats contracting FIP were all genetically related through the sire. Feline coronavirus (FCoV) genomic RNA was detected consistently in this study in biologic samples from adult cats, kittens suffering from FIP, and their siblings. Analysis of viral 7a/7b open reading frame (ORFs) were analyzed and revealed two distinct virus variants circulating in the population, one with an intact 7a ORF and one with two major deletions in the 7a ORF. The 7b ...


Detection Of Feline Coronavirus Infection In Captive Cheetahs (Acinonyx Jubatus) By Polymerase Chain Reaction, Melissa Kennedy, S Citino, T Dolorico, A Mcnabb, A Moffat, Stephen Kania Mar 2012

Detection Of Feline Coronavirus Infection In Captive Cheetahs (Acinonyx Jubatus) By Polymerase Chain Reaction, Melissa Kennedy, S Citino, T Dolorico, A Mcnabb, A Moffat, Stephen Kania

Stephen A Kania

Feline coronavirus genetic elements were detected by polymerase chain reaction from blood, fecal samples, and effusive fluid collected from 33 cheetahs in the U.S.A. Feline coronavirus-specific serum antibodies were also measured by indirect immunofluorescence. Ten cheetahs were positive for viral shedding by polymerase chain reaction, whereas 13 were seropositive by immunofluorescence. Results of serology did not consistently correlate with shedding of virus, and the capture antigen used for detection of feline coronavirus-specific antibodies had a significant impact on results. Testing of samples from one population over a 1-yr period indicated chronic infection in some animals. These relatively healthy ...


Will Theaters Receive Two Thumbs Up From Individuals With Disabilities?, Joseph H. Huber Dec 2001

Will Theaters Receive Two Thumbs Up From Individuals With Disabilities?, Joseph H. Huber

Movement Arts, Health Promotion and Leisure Studies Faculty Publications

No abstract provided.


Molecular Mechanisms Involved In Human Platelet Aggregation By Synergistic Interaction Of Platelet-Activating Factor And 5-Hydroxytryptamine, B H. Shah, H Rasheed, I H. Rahman, A H. Shariff, F L. Khan, H B. Rahman, S Hanif, S A. Saeed Dec 2001

Molecular Mechanisms Involved In Human Platelet Aggregation By Synergistic Interaction Of Platelet-Activating Factor And 5-Hydroxytryptamine, B H. Shah, H Rasheed, I H. Rahman, A H. Shariff, F L. Khan, H B. Rahman, S Hanif, S A. Saeed

Department of Biological & Biomedical Sciences

Our recent studies have shown that co-activation of Gq and Gi proteins by 5-hydroxytryptamine (5-HT) and adrenaline show synergism in human platelet aggregation. This study was conducted to examine the mechanism(s) of synergistic interaction of 5-HT and platelet activating factor (PAF) in human platelets. We show that PAF, but not 5-HT, increased platelet aggregation in a concentration-dependent manner. However, low concentrations of 5-HT (2 microM) potentiated platelet aggregation induced by subthreshold concentration of PAF (40 nM) indicating a synergistic interaction between the two agonists and this synergism was blocked by receptor antagonists to either 5-HT or PAF. 5-HT also ...


Detectability Of Excitatory Vs. Inhibitory Drive In A Thalamocortical Relay Neuron Model., Gregory D. Smith, S Murray Sherman Dec 2001

Detectability Of Excitatory Vs. Inhibitory Drive In A Thalamocortical Relay Neuron Model., Gregory D. Smith, S Murray Sherman

Applied Science Articles & Book Chapters

Although inhibitory inputs are often viewed as equal but opposite to excitatory inputs, excitatory inputs may alter the firing of postsynaptic cells more effectively than inhibitory inputs. This is because spike cancellation produced by an inhibitory input requires coincidence in time, whereas an excitatory input can add spikes with less temporal constraint. To test for such potential differences, especially in the context of the function of thalamocortical (TC) relay nuclei, we used a stochastic “integrate-and-fire-or-burst” TC neuron model to quantify the detectability of excitatory and inhibitory drive in the presence and absence of the low-threshold ...


A Synopsis Of The Ferns And Fern Allies Of Nebraska, With Maps Of Their Distribution, Steven B. Rolfsmeier, Robert B. Kaul, David M. Sutherland Dec 2001

A Synopsis Of The Ferns And Fern Allies Of Nebraska, With Maps Of Their Distribution, Steven B. Rolfsmeier, Robert B. Kaul, David M. Sutherland

Faculty Publications in the Biological Sciences

An annotated list and county-by-county distribution maps are presented for the 32 species of ferns and fern allies native to Nebraska, based upon field and herbarium studies and critical evaluation of the literature. Native to the state are Isoetes melanopoda, Selaginella rupestris, five species of Equisetum, and 25 species in 18 genera of ferns. Three native species are here verified for the first time, based upon recent collections: Matteuccia struthiopteris var. pensylvanica, Ophioglossum engelmannii, and Pellaeaglabella ssp. glabella. Isoetes melanopoda was rediscovered in 2000, the first record since 1941. Rejected are published reports of Lycopodium annotinum, Selaginella densa, Equisetum ...


Micrornas: Tiny Regulators With Great Potential, Victor Ambros Dec 2001

Micrornas: Tiny Regulators With Great Potential, Victor Ambros

Victor R. Ambros

Animal genomes contain an abundance of small genes that produce regulatory RNAs of about 22 nucleotides in length. These microRNAs are diverse in sequence and expression patterns, and are evolutionarily widespread, suggesting that they may participate in a wide range of genetic regulatory pathways.


Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 1999-2003 Annual Report, 1 September 2000 - 31 October 2001, Philip W. Sadler, Robert J. Latour, Robert E. Harris, John E. Olney Dec 2001

Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 1999-2003 Annual Report, 1 September 2000 - 31 October 2001, Philip W. Sadler, Robert J. Latour, Robert E. Harris, John E. Olney

Reports

This report presents the results of striped bass (Marone saxatilis) tagging and monitoring activities in Virginia during the penod 1 September 2000 through 31 October 2001. It includes an assessment of the biological characteristics of striped bass taken from the 2001 spring spawning run, estimates of annual survtval based on annual spring tagging, and the results of the fall 2000 directed mortality study that is cooperative with the Maryland Department of Natural Resources. The information contained in this report is required by the Atlantic States Marine Fisheries Commission and is used to implement a coordinated management plan for striped bass ...


Attend The Winter Crop Advantage Series, James A. Fawcett Dec 2001

Attend The Winter Crop Advantage Series, James A. Fawcett

Integrated Crop Management News

Crop producers and agribusiness personnel are invited to attend the Iowa State University Extension Crop Advantage Series to be presented at 11 locations around the state in January and February 2002. This series of conferences will emphasize how the 2001 crop problems will influence pest management and other decisions in 2002, as well as the latest integrated crop management technology. All of the events will feature Mike Duffy (Department of Economics, ISU) on "The New Farm Bill and the Changing Structure of Agriculture," and Elwynn Taylor (Department of Agronomy, ISU) on "Managing Weather Risk for Production and Marketing."


Varietal Differences In Frogeye Leaf Spot Susceptibility, Michael D. Uphoff, X. B. Yang Dec 2001

Varietal Differences In Frogeye Leaf Spot Susceptibility, Michael D. Uphoff, X. B. Yang

Integrated Crop Management News

Frogeye leaf spot of soybean, caused by the fungus Cercospora sojina, causes damage in warm, humid soybean-growing regions and has been more important in southern states than in Iowa. Recently, however, the incidence of frogeye leaf spot has increased in north central states, including Iowa, with reports of severe damage in several areas. Symptoms of the disease include small, gray spots with reddish brown borders forming on the upper leaves in mid- to late August.


Changes In Disease Occurrence In Iowa, X. B. Yang Dec 2001

Changes In Disease Occurrence In Iowa, X. B. Yang

Integrated Crop Management News

A warm winter this year has generated discussion on the effects of climate on disease occurrence. At the 1998 Iowa State University ICM Conference, we discussed how diseases favored by cool temperatures may became less important, whereas warm-temperature diseases may increase in future years. At this year's ICM Conference, there were numerous comments and questions about new soybean diseases becoming increasingly important to production. Changes in disease occurrence have provided new challenges in disease management practices.


Extra 2001 Icm Conference Proceedings, Richard W. Larson Dec 2001

Extra 2001 Icm Conference Proceedings, Richard W. Larson

Integrated Crop Management News

The Agribusiness Education Program office has extra copies of the 2001 Integrated Crop Management Conference proceedings available for purchase. If you pick up copies at the office, the cost is $15 each. If copies are shipped to you, they are $17.50 each and this price includes the shipping cost. To place an order, make your check payable to Iowa State University, or provide your credit card number, expiration date, and cardholder name if paying by credit card (Visa/MasterCard/Discover) and mail it to Agribusiness Education Program, 2104 Agronomy Hall, Iowa State University, Ames, Iowa, 50011. If you have ...


Grasshoppers In December, Marlin E. Rice Dec 2001

Grasshoppers In December, Marlin E. Rice

Integrated Crop Management News

With tattered wings and a broken hind leg, this differential grasshopper was still alive on December 8. On this date I found two grasshoppers in my yard north of Ames. They had survived several hard frosts in October and then continued to beat the odds through a relatively mild November. Maybe this should come as no surprise because 2001 was a very unusual insect year in Iowa, with a variety of pest problems rarely experienced.


Water Quality Conference 2002, Richard W. Larson Dec 2001

Water Quality Conference 2002, Richard W. Larson

Integrated Crop Management News

Plan to attend the 2002 Water Quality Conference "Agriculture and the Environment: The Challenge of Change" on March 4-6. This conference will provide a forum for awareness and discussion of critical issues affecting water resources in Iowa. Topic presentations and panel discussions will address how Iowa agriculture is changing and the impact of change on Iowa's water resources. The conference will be held at the Scheman Building, Iowa State University, Ames, from 9:45 a.m. to 5:00 p.m. on March 4; from 8:30 a.m. to 4:30 p.m. on March 5; and from ...


Certified Crop Adviser Short Courses In 2002, Richard Larson Dec 2001

Certified Crop Adviser Short Courses In 2002, Richard Larson

Integrated Crop Management News

List of crop extension classes offered in 2002.


Sediment And Total Maximum Daily Loads, Mahdi Al-Kaisi, H. Mark Hanna, William Ehm, John Creswell, Michael J. Tidman Dec 2001

Sediment And Total Maximum Daily Loads, Mahdi Al-Kaisi, H. Mark Hanna, William Ehm, John Creswell, Michael J. Tidman

Integrated Crop Management News

An understanding of total maximum daily loads (TMDLs) is important when planning and implementing conservation practices. You need to define and plan for TMDLs as part of your farm's conservation plan. But you also need to consider all the land and farmers in the entire watershed, as well as the impact of management decisions that you and other farmers make on the whole watershed.


Fda Releases Guidelines For Fumonisins In Corn, Gary P. Munkvold Dec 2001

Fda Releases Guidelines For Fumonisins In Corn, Gary P. Munkvold

Integrated Crop Management News

Last month, the U.S. Food and Drug Administration (FDA) released its official guidelines for safe levels of fumonisins in corn used for foods and animal feeds. Fumonisins are mycotoxins produced by species of Fusarium fungi that cause Fusarium ear rot. Fumonisins are the most common mycotoxins found in corn; because they are acutely toxic to animals (especially pigs and horses), and have been linked to increased cancer rates and other human health problems, the FDA feels that "human health risks associated with fumonisins are possible."


Molecular Phylogenetic Studies In Rosaceae, Christopher S. Campbell Dec 2001

Molecular Phylogenetic Studies In Rosaceae, Christopher S. Campbell

University of Maine Office of Research Administration: Grant Reports

This project will investigate the evolutionary relationships within the large and important rose family. This group of plants contains numerous commercially valuable fruits (apples, pears, strawberries, cherries, peaches, plums, blackberries, and raspberries) and many horticulturally significant plants (roses, cotoneaster, lady's mantle, bridle-wreath, flowering quince, fire-thorn, cinqfoil, and others). Despite the large and important role that these plants play in our daily lives and scientific interest, we do not have a clear view of the evolutionary relationships of members of the family. A primary reason for this situation is that insufficient evidence has been accumulated to adequately address the problem ...


Manipulation Of Prenatal Hormones And Dietary Phytoestrogens During Adulthood Alter The Sexually Dimorphic Expression Of Visual Spatial Memory, Edwin D. Lephart, Trent D. Lund Dec 2001

Manipulation Of Prenatal Hormones And Dietary Phytoestrogens During Adulthood Alter The Sexually Dimorphic Expression Of Visual Spatial Memory, Edwin D. Lephart, Trent D. Lund

All Faculty Publications

In learning and memory tasks, requiring visual spatial memory (VSM), males exhibit higher performance levels compared to females (a difference attributed to sex steroid hormonal influences). Based upon the results from our companion investigation, this study examined the influence of prenatal sex steroid hormone manipulations on VSM in adulthood, as assessed in the radial arm maze. Additionally, the influence of dietary soy phytoestrogens (i.e., the presence of high or low estrogen-like compounds present in the animal's diet) on VSM was examined in combination with the prenatal hormonal manipulations. Results: Radial arm maze performance on a phytoestrogen-rich diet: 1 ...


Visual Spatial Memory Is Enhanced In Female Rats (But Inhibited In Males) By Dietary Soy Phytoestrogens, Edwin D. Lephart, Trent D. Lund, Timothy W. West, Lilyan Y. Tian, Lihong H. Bu, Daniel L. Simmons, Kenneth Setchell, Herman Adlercreutz Dec 2001

Visual Spatial Memory Is Enhanced In Female Rats (But Inhibited In Males) By Dietary Soy Phytoestrogens, Edwin D. Lephart, Trent D. Lund, Timothy W. West, Lilyan Y. Tian, Lihong H. Bu, Daniel L. Simmons, Kenneth Setchell, Herman Adlercreutz

All Faculty Publications

In learning and memory tasks, requiring visual spatial memory (VSM), males exhibit superior performance to females (a difference attributed to the hormonal influence of estrogen). This study examined the influence of phytoestrogens (estrogen-like plant compounds) on VSM, utilizing radial arm-maze methods to examine varying aspects of memory. Additionally, brain phytoestrogen, calbindin (CALB), and cyclooxygenase-2 (COX-2) levels were determined. Results: Female rats receiving lifelong exposure to a high-phytoestrogen containing diet (Phyto-600) acquired the maze faster than females fed a phytoestrogen-free diet (Phyto-free); in males the opposite diet effect was identified. In a separate experiment, at 80 days-of-age, animals fed the Phyto-600 ...


Northeast Research Station Watertown, South Dakota Annual Progress Report, 2001, Agricultural Experiment Station, Plant Science Department Dec 2001

Northeast Research Station Watertown, South Dakota Annual Progress Report, 2001, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2001 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 weather data, yield comparisons, crop performance trials, corn trials, soybean trials, winter wheat performance testing, Barley Foliar information, weed and pest control, herbicide demonstrations, canola and flax variety trials and more.


West River Ag Center Crops And Soils Research Annual Progress Report, 2001, Agricultural Experiment Station Dec 2001

West River Ag Center Crops And Soils Research Annual Progress Report, 2001, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2001 progress report of the West River Crops and Soils Research Projects, South Dakota Agricultural Experiment Station. This document includes reports on: weather and climate, wheat and grain variety trials, management and tillage, and weed and pest control.


West Florida Shelf Response To Local Wind Forcing: April 1998, Robert H. Weisberg, Zhenjiang Li, Frank E. Muller-Karger Dec 2001

West Florida Shelf Response To Local Wind Forcing: April 1998, Robert H. Weisberg, Zhenjiang Li, Frank E. Muller-Karger

Marine Science Faculty Publications

We compare west Florida shelf velocity and sea level data with a model simulation for April 1998. Responses for three upwelling and three downwelling favorable wind events are documented. Along-shelf jets accompanied by oppositely directed upper and lower layer across-shelf flows (with connecting vertical velocity) comprise the fully three-dimensional inner shelf responses, which are sensitive to stratification. With an initial density field representative of April 1998 the model simulates velocity and sea level variations in general agreement with the observations, whereas substantial mismatches occur without stratification. Despite the winds being the primary motive agent for the inner shelf the stratification ...


Longitudinal Variation In Muscle Protein Expression And Contraction Kinetics Of Largemouth Bass Axial Muscle, Tierney M. Thys, Jason M. Blank, David J. Coughlin, Fred Schachat Dec 2001

Longitudinal Variation In Muscle Protein Expression And Contraction Kinetics Of Largemouth Bass Axial Muscle, Tierney M. Thys, Jason M. Blank, David J. Coughlin, Fred Schachat

Biological Sciences

The present study investigates muscle protein expression in largemouth bass Micropterus salmoides through intra- and intermyomeric comparisons of white muscle. Using denaturing SDS-polyacrylamide gel electrophoresis, muscle protein expression in the arm and cone regions of sequential myomeres was compared for three bass. Low percentage (4.75 %) polyacrylamide-SDS gels and cyanogen bromide (CNBr) peptide mapping revealed no obvious intramyomeric differences between the myosin heavy chains of the arm and cone regions. Electrophoresis of myofibrils and muscle homogenates on higher percentage gels also failed to demonstrate any significant differences between arm and cone regions in either the myosin light chains or any ...


Growth And Metabolism Of Larval Zebrafish: Effects Of Swim Training, Brian P. Bagatto, B. Pelster, W. W. Burggren Dec 2001

Growth And Metabolism Of Larval Zebrafish: Effects Of Swim Training, Brian P. Bagatto, B. Pelster, W. W. Burggren

Brian P. Bagatto

Larval zebrafish (Danio rerio) of three different age classes ('yolk-sac' larvae, 96 h; 'swim-up' larvae, 9 days old; and 'free-swimming' larvae, 21 days old) were trained for 2, 6 and 11 days, respectively, to swim at 0 body lengths per second (BL s(-1)), 2 BL s(-1) and 5 BL s(-1). Survival was significantly diminished in larvae trained at 5 BL s(-1) compared to controls (0 BL s(-1)). Although training produced no significant differences in mass and length, the youngest larvae absorbed their yolk at a faster rate during training. Routine oxygen consumption (M(O2r)) and ...


What Are We Doing To Prevent Entry Of Potentially Catastrophic Foreign Animal Diseases Into The Usa, Gary C. Smith Dec 2001

What Are We Doing To Prevent Entry Of Potentially Catastrophic Foreign Animal Diseases Into The Usa, Gary C. Smith

Range Beef Cow Symposium

What are Foreign Animal Diseases? By definition, a Foreign Animal Disease (FAD) is one which originates in another country and can, or does, enter the USA. An agency of our federal government, the Animal and Plant Health Inspection Service (APHIS) of the U.S. Department of Agriculture (USDA), is charged with responsibility for preventing entry of FADs into our country and is especially vigilant regarding those FADs which would have potentially catastrophic effects on farm-animal populations, the agricultural economy and/or the public (human) health. Activities of APHIS specifically related to FADs include (USDA/APHIS, 2001): (a) Guarding our borders ...


Muscle Profiling, Chris R. Calkins Dec 2001

Muscle Profiling, Chris R. Calkins

Range Beef Cow Symposium

In the mid-90's, Cattle Fax released some alarming data. They showed that over the previous 5-year period the value of the beef rib and loin had increased by just 3-4% while the value of the chuck and round had dropped by 24-25%. Given that these later two primals make up the more than 56% of the carcass, it was clear that dramatic action was needed to reverse the trend. Increasing the value of the chuck and round meant knowing more about the muscles which comprise these cuts. Therefore, the University of Nebraska and the University of Florida joined together ...


Packing Industry Innovations As We Move To The Future?, H. Glen Dolezal Dec 2001

Packing Industry Innovations As We Move To The Future?, H. Glen Dolezal

Range Beef Cow Symposium

The beef industry has overcome numerous challenges in the past and has adopted and implemented new and innovative ideas to improve beef demand. A key change in the beef industry philosophy has been the switch from a mindset of commodity production to one of consumer focus for product safety, quality, convenience, and price point. The packing industry is well known for adopting technology. As we move into the future, technological advancements will continue in food safety and processing, as well as vision grading, case-ready solutions, value-added products, and product quality. Hopefully, these improvements will be made in cooperation with producers ...


Beef Market Outlook, Randy Blach Dec 2001

Beef Market Outlook, Randy Blach

Range Beef Cow Symposium

Beef Business Facts:

1. The beef industry is changing rapidly

2. Competition will be tougher and margins will narrow

3. Risk is increasing

4. Approaches to marketing are changing

5. An increased percentage of beef will be sold under a brand name

6. Environmental and food safety issues will increase

7. General observations


Leasing Arrangements For Cattle, Richard T. Clark, Duane Griffith, Kevin Dhuyvetter, Damona Doye Dec 2001

Leasing Arrangements For Cattle, Richard T. Clark, Duane Griffith, Kevin Dhuyvetter, Damona Doye

Range Beef Cow Symposium

Agriculturists have long used leasing arrangements as a means of farming or ranching with more than owned resources. Most commonly, land has been leased, but other resources can be acquired in a similar manner. Beef cows are leased between parties on either a cash or share of calf crop basis, but share leases seem to be predominant. Bulls, when not part of a cow share agreement, are primarily leased for cash.

Leasing arrangements may be considered in several situations. Producers can use leases, calf share in particular, to transfer ownership of cows to others over time with possibly less income ...