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Articles 13261 - 13290 of 16525
Full-Text Articles in Entire DC Network
Employers And Job Development: The Business Perspective, Michael J. Millington, K. K. Asner, D. C. Linkowski, J. Der-Stepanian
Employers And Job Development: The Business Perspective, Michael J. Millington, K. K. Asner, D. C. Linkowski, J. Der-Stepanian
Special Education and Rehabilitation Counseling Faculty Publications
No abstract provided.
Utah Water Research Laboratory Publications Listing 1993-1996, David S. Bowles, Leaunda S. Hemphill
Utah Water Research Laboratory Publications Listing 1993-1996, David S. Bowles, Leaunda S. Hemphill
Reports
No abstract provided.
Mutations In Trans-Acting Factors Affecting Mrna Decapping In Saccharomyces Cereviciae, Lianna K. Etchberger, C. A. Stevens, A. Stevens, R. Parker
Mutations In Trans-Acting Factors Affecting Mrna Decapping In Saccharomyces Cereviciae, Lianna K. Etchberger, C. A. Stevens, A. Stevens, R. Parker
Biology Faculty Publications
The decay of several yeast mRNAs occurs by a mechanism in which deadenylation precedes decapping and subsequent 5'-to-3' exonucleolytic decay. In order to identify gene products required for this process of mRNA turnover, we screened a library of temperature-sensitive strains for mutants with altered mRNA degradation. We identified seven mutations in four genes that inhibited mRNA turnover. Two mutations were alleles of the XRN1 5'-to-3' exoribonuclease known to degrade mRNAs following decapping. One mutation defined a new gene, termed DCP1, which in subsequent work was demonstrated to encode a decapping enzyme or a necessary component of a decapping complex. The …
Fate Of Biological Control Introductions: Monitoring An Australian Fungal Pathogen Of Grasshoppers In North America, Michael J. Bidochka, Scott R. A. Walsh, Mark E. Ramos, Raymond J. St. Leger, Julie Cl Silver, Donald W. Roberts
Fate Of Biological Control Introductions: Monitoring An Australian Fungal Pathogen Of Grasshoppers In North America, Michael J. Bidochka, Scott R. A. Walsh, Mark E. Ramos, Raymond J. St. Leger, Julie Cl Silver, Donald W. Roberts
Biology Faculty Publications
In North America there are two generally recognized pathotypes (pathotypes 1 and 2) of the fungus Entomophaga grylli which show host-preferential infection of grasshopper subfamilies. Pathotype 3, discovered in Austra- lia,hasabroadergrasshopperhostrangeandwasconsidered to be a good biocontrol agent. Between 1989 and 1991 patho- type3wasintroducedattwofieldsitesinNorthDakota.Since resting spores are morphologically indistinguishable among pathotypes, we used pathotype-specific DNA probes to con- firm pathotype identification in E. grylli-infected grasshop- pers collected at the release sites in 1992, 1993, and 1994. In 1992, up to 23% of E. grylli-infected grasshoppers of the subfamilies Melanoplinae, Oedipodinae, and Gomphocerinae were infected by pathotype 3,with no infections >1 km …
Characterizing The Outlines Of Degraded Fine-Particles By Fractal Dimension, Andrew Hunt, David L. Johnson
Characterizing The Outlines Of Degraded Fine-Particles By Fractal Dimension, Andrew Hunt, David L. Johnson
Scanning Microscopy
Fractal dimension has been used extensively as a descriptor of the rugged outlines of fine-particles. Potentially, it may be a useful parameter for characterizing the outlines of fine-particles which have been subjected to some form of chemical degradation. Here, fractal dimension values have been computed for the outlines of microscopic lead fine-particles both before and after weak hydrochloric acid dissolution experiments. Values obtained for the post-dissolution rugged profiles were greater than those of the pristine fracture grains which had a Euclidean form. The profiles of the degraded fine-particles could be characterized by a single fractal dimension value, or they exhibited …
Insights, Winter, 1995, Utah State University
Insights, Winter, 1995, Utah State University
Discovery Magazine
Bi-annual alumni newsletter for the College of Science of Utah State University in Logan.
Insights, Fall, 1995, Utah State University
Insights, Fall, 1995, Utah State University
Discovery Magazine
Bi-annual alumni newsletter for the College of Science of Utah State University in Logan.
Inter-Alpha-Inhibitor: A Protein Family Involved In The Inhibition Of Calcium Oxalate Crystallization, Fouad Atmani, Jacques Mizon, Saeed R. Khan
Inter-Alpha-Inhibitor: A Protein Family Involved In The Inhibition Of Calcium Oxalate Crystallization, Fouad Atmani, Jacques Mizon, Saeed R. Khan
Scanning Microscopy
Inter-α-inhibitor (IαI) is a serine protease inhibitor present in human plasma. It has a molecular weight of about 220 kDa which encompasses 3 chains including two heavy chains and one light chain. The light chain, known as bikunin, is responsible for the antitryptic activity of IαI in the inhibition of various enzymes, such as trypsin and chymotrypsin. Under physiologic or certain pathologic circumstances, several macromolecules related to IαI appear in plasma and urine. However, the physiologic role of IαI remains unclear. As far as urolithiasis is concerned, two urinary macromolecules related to IαI have been isolated and shown to be …
In Vivo Metal Substitutions In Metal Sequestering Subcellular Compartments: X-Ray Mapping In Cryosections, A. J. Morgan, C. Winters, A. Yarwood, N. Wilkinson
In Vivo Metal Substitutions In Metal Sequestering Subcellular Compartments: X-Ray Mapping In Cryosections, A. J. Morgan, C. Winters, A. Yarwood, N. Wilkinson
Scanning Microscopy
Qualitative digital X-ray mapping techniques were employed to determine the distributions of essential and non-essential elements in three invertebrate "models": (1) Pb, Zn, Cd, Cu, Fe in thin cryosections of the hepatopancreas of the terrestrial isopod, Oniscus asellus; (2) Pb, Zn, Cd, Ca in thin cryosections of the chloragogenous tissue of the earthworm, Lumbricus rubellus; and (3) As in air-dried smears and thin cryosections of chloragogen in L. rubellus. Four general conclusions were drawn from the results of these studies: (a) non-essential elements can accumulate, distribute and be compartmentalized because they, or the organo-complexes that they form, …
X-Ray Standing Wave Studies Of Ad-Dimers On Si(001), Y. Qian, P. F. Lyman, M. J. Bedzyk
X-Ray Standing Wave Studies Of Ad-Dimers On Si(001), Y. Qian, P. F. Lyman, M. J. Bedzyk
Scanning Microscopy
X-ray standing waves generated by dynamical Bragg diffraction were used as an element-specific structural probe for investigating Ga and Sb adsorption on Si(001). Using the (004) and (022) reflections, we precisely measured Ga and Sb ad-dimer bond lengths and ad-dimer heights above the bulk-extrapolated Si(001) surface. The room temperature [001] thermal vibration amplitudes of Ga and Sb adatoms on Si(00l) were also directly determined by combining the fundamental (004) and high-order harmonic (008) X-ray standing wave measurements. These high-resolution measurements reveal important quantitative structural information regarding the dimerized surface structures, and provide a stringent test for structural models proposed by …
Zinc Deficiency Produces Time-Related Ultrastructural Changes In Rat Cheek Epithelium, Shahid H. Ashrafi, Nasser A. H. Said-Al-Naief
Zinc Deficiency Produces Time-Related Ultrastructural Changes In Rat Cheek Epithelium, Shahid H. Ashrafi, Nasser A. H. Said-Al-Naief
Scanning Microscopy
The subject of this study was whether the ultrastructural changes in cheek epithelium of zinc-deficient rats are time related. Weanling male Sprague Dawley rats were fed a zinc-deficient diet containing 0.4 ppm zinc (ZD) ad libitum and controls were pair-fed zinc adequate diet containing 40 ppm zinc. After 9, 18, and 27 days of zinc deficiency, specimens from cheek epithelium of both groups were processed for transmission electron microscopy. Partial conversion of the orthokeratinized cheek epithelium to parakeratinized was seen as early 9 days. An electron-lucent band surrounding the nucleus was observed in ZD cells. Mitochondria, tonofilaments, keratohyalin granules and …
Alterations In Intestinal Transport Of Oxalate In Disease States, Marguerite Hatch, Robert W. Freel
Alterations In Intestinal Transport Of Oxalate In Disease States, Marguerite Hatch, Robert W. Freel
Scanning Microscopy
Normally, absorption of oxalate from dietary sources can occur in all segments of the intestinal tract. However, alterations in both the magnitude and direction of oxalate fluxes across the intestine can occur in disease states. In enteric hyperoxaluria, enhanced absorption of oxalate by the large intestine is caused by increased permeability of a shunt conductance induced by malabsorbed bile salts and fatty acids. In this condition, the contribution of a paracellular passive flux of oxalate moving along its electrochemical gradient will predominate when intraluminal concentrations of free oxalate are high. In contrast, in chronic renal failure, secretion of oxalate can …
Extirpation Of A Recently Established Feral Pig Population In Kansas, Chad D. Richardson, Philip S. Gipson, David P. Jones, James C. Luchsinger
Extirpation Of A Recently Established Feral Pig Population In Kansas, Chad D. Richardson, Philip S. Gipson, David P. Jones, James C. Luchsinger
Wildlife Damage Management Conference
Most feral pigs (Sus scrofa) are descendants of domestic swine that have gone wild and their reproduction is uncontrolled by man. A few populations may be descendants of European wild boar or crosses between wild boar and domestic swine. Disease control officials report that 23 states have established populations of feral pigs and the total feral pig population in the United States is probably in excess of 2 million animals. A population of feral pigs was documented in the fall of 1993 on the Fort Riley Military Installation in northeastern Kansas. Biologists from the Fort Riley Natural Resources …
The Professional Evolution Of Wildlife Damage Management, James E. Miller
The Professional Evolution Of Wildlife Damage Management, James E. Miller
Wildlife Damage Management Conference
The term -- wildlife damage management, in lieu of animal damage control, vertebrate pest control, or nuisance animal control -- has become the currently recognized term for an area of wildlife management that a growing number of professionals spend a significant part of their time and/or career working in. The acceptance of this terminology is, however, a part of the continuing evolution of the profession and not simply a name change for political correctness. Admittedly, my purpose is not to validate or beg acceptance of this terminology. Rather, what I hope to do is to justify the underlying premise of …
Efficacy Of Shooting Permits For Deer Damage Abatement In Wisconsin, Rick R. Horton, Scott R. Craven
Efficacy Of Shooting Permits For Deer Damage Abatement In Wisconsin, Rick R. Horton, Scott R. Craven
Wildlife Damage Management Conference
The efficacy of out-of-season shooting permits for deer damage abatement in Wisconsin has not been critically evaluated. We used deer damage shooting permits to remove 21 antlerless deer (Odocoileus virginianus) from 7 heavily damaged alfalfa fields to evaluate subsequent impact on crop damage. Volunteer shooters, using permits issued to the landowners, hunted a minimum of 3 nights/week throughout the growth of the third alfalfa crop (Aug. 1 - late Sept.). We calculated the difference between the assessed damage to the second crop (untreated) and the third crop (treated) on treatment and control farms. We found no significant difference …
Incorporating Depredation Permits Into Integrated Damage Management Plans For Aquaculture Facilities, Philip Mastrangelo, Charles Sloan, Kevin Bruce
Incorporating Depredation Permits Into Integrated Damage Management Plans For Aquaculture Facilities, Philip Mastrangelo, Charles Sloan, Kevin Bruce
Wildlife Damage Management Conference
Increasing bird depredation at aquaculture facilities in Alabama, Arkansas, Louisiana, and Mississippi creates economic hardships for many fish farmers. Solutions to bird depredation at these facilities require the development of integrated damage management plans that will reduce damage levels while insuring minimal impacts to bird populations. Damage management plans developed for fish farmers by the U.S. Department of Agriculture, Animal and Health Plant Inspection Service, Animal Damage Control (ADC) program always include non-lethal control recommendations. If nonlethal control is ineffective or only marginally effective in reducing damage, the management plans may also recommend the issuance of depredation permits by the …
Pesticide Use By The Federal/Cooperative Animal Damage Control (Adc) Program, 1988-1991, Gus Connolly
Pesticide Use By The Federal/Cooperative Animal Damage Control (Adc) Program, 1988-1991, Gus Connolly
Wildlife Damage Management Conference
ADC personnel use many wildlife damage control methods including pesticide products. This paper presents a national overview of the kinds and amounts of chemical pesticides used by ADC in direct control activities during Fiscal Years (FY) 1988-1991. The pesticides used by ADC included aluminwn phosphide, 4-aminopyridine, bone tar oil, brodifacoum, carbon, alpha-chloralose, cholecalciferol, DRC-1339, fenthion, glyphosate, immobilizing & euthanizing drugs, mineral oil, PA-14, phosphorus, polybutene, sodium cyanide, sodium fluoroacetate, sodium nitrate, strychnine, sulfur, and zinc phosphide. This summary shows that ADC personnel used remarkably small amounts of chemicals during FY 1988- 1991. Overall amounts of pesticides used by ADC …
From Deer Problem To People Solution: A Case Study From Montgomery County, Maryland, Jonathan S. Kays, Douglas Tregoning
From Deer Problem To People Solution: A Case Study From Montgomery County, Maryland, Jonathan S. Kays, Douglas Tregoning
Wildlife Damage Management Conference
Montgomery County, Maryland, a 495 square-mile area adjacent to Washington, D.C., is a rapidly developing, highly educated suburban community with one of the highest per capita incomes in the nation. There is increasing concern for the growth and impact of white-tailed deer (Odocoileus virginianus) populations by agricultural interests, resource professionals and residential landowners. The Montgomery County Council assembled a task force of stakeholders to examine relevant information and propose deer management options. The task force report provided detailed information on the county deer situation, 11 management alternatives, and 9 final recommendations. The county parks administrator appointed a staff …
Ecology And Control Of Wildlife Damage To Electric Substations, Glenn R. Dudderar, Scott R. Winterstein, Wendy H. Sangster
Ecology And Control Of Wildlife Damage To Electric Substations, Glenn R. Dudderar, Scott R. Winterstein, Wendy H. Sangster
Wildlife Damage Management Conference
This study addresses several aspects of the ecology and control of wildlife damage to electric substations because the amount of existing research is not sufficient to make informed decisions about how best to minimize that damage. Records of 121 incidents of animal-caused faults showed that 78% of the faults were caused by squirrels and raccoons and an average of 2,511 customers lost service during the outage caused by such a fault. Animal damage control measures were evaluated by observing challenges to control measures by raccoons and squirrels at a substation. The control measures were breached twice because they had not …
American White Pelicans: The Latest Avian Problem For Catfish Producers, D. Tommy King
American White Pelicans: The Latest Avian Problem For Catfish Producers, D. Tommy King
Wildlife Damage Management Conference
Animal Damage Control offices in Arkansas, Louisiana, and Mississippi began receiving complaints concerning American white pelicans (Pelecanus erythrorhynchos) foraging in commercial channel catfish (Ictalurus punctatus) ponds in 1990. Because of the relatively shallow pond depth and high fish stocking rates used by most producers, commercial catfish ponds provide a near perfect foraging environment for American white pelicans. Since 1993, pelicans seem to have become more persistent in their foraging efforts and therefore, more difficult to disperse from catfish farms. Damage abatement recommendations have consisted of harassment measures similar to those used for other piscivorous birds, issuance of …
Ecosystem Management And Wildlife Management: Compatible Or Conflicting?, David C. Guynn Jr., Greg K. Yarrow
Ecosystem Management And Wildlife Management: Compatible Or Conflicting?, David C. Guynn Jr., Greg K. Yarrow
Wildlife Damage Management Conference
Examples of wildlife-human conflicts include deer-automobile collisions, disease transmission concerns, and damage to various commodities (e.g. agricultural crops, timber production). The extent of these problems is increasing at a time when American's attitudes are shifting emphasis from commodity production to concern for the environment. Ecosystem management has been proposed as a strategy to balance concerns for commodity production and the environment. Ecosystem management, unlike traditional natural resource management, will require management over large areas for long periods of time. This new philosophy of land management requires that the natural resource base be viewed in its entirety, and not as separate …
Black Bear Damage Management In Washington State, Georg J. Ziegltrum, Dale L. Nolte
Black Bear Damage Management In Washington State, Georg J. Ziegltrum, Dale L. Nolte
Wildlife Damage Management Conference
Black bears (Ursus americanus) foraging on trees can be extremely detrimental to the health and economic value of a timber stand. A supplemental feeding program to reduce bear damage is coordinated by the Washington Forest Protection Association's Animal Damage Control Program (ADCP). A brief overview of the ADCP is provided along with a description of bear damage and the supplemental feeding program. Success of the feeding program is demonstrated by an increasing participation and its general acceptance by the public. Timber producers placed over 400 thousand pounds of pellets in 700 feeding stations this past year.
Mississippi's Beaver Control Assistance Program, 1989-1994, Philip Mastrangelo
Mississippi's Beaver Control Assistance Program, 1989-1994, Philip Mastrangelo
Wildlife Damage Management Conference
Responding to landowner requests, the 1989 Mississippi Legislature created the Beaver Control Advisory Board and mandated it to develop a program which would ensure the control of beaver damage throughout Mississippi. The Advisory Board is comprised of the administrative heads of five state agencies: the Department of Wildlife, Fisheries, and Parks (chairperson), the Department of Transportation, the Cooperative Extension Service, the Forestry Commission, and the Department of Agriculture and Commerce. In cooperation with the U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Animal Damage Control (ADC) program, the Advisory Board developed the Beaver Control Assistance Program (BCAP). BCAP …
A Strategy For Integrating Principles And Concepts Of Wildlife Damage Control Into The School Curriculum, Thomas A. Eddy
A Strategy For Integrating Principles And Concepts Of Wildlife Damage Control Into The School Curriculum, Thomas A. Eddy
Wildlife Damage Management Conference
This paper reports an approach to educating today's youth concerning the importance of regulating numbers of wildlife species that threaten property, products and health. The emphases are on preparing teachers to integrate principles and concepts into the existing curricular materials, justifying control measures with ecological understandings and economic information and dealing effectively with sensitive animal rights issues. Opportunities for integration of specific wildlife damage control topics are suggested for lessons in the life sciences, social sciences, health, language arts and mathematics. Examples of conflict between groups of different opinions about the seriousness of a pest's activities or appropriateness of control …
Wildlife Damage Control In Kansas: Private Operators And Public Agencies, L. Andrew Madison, Philip S. Gipson
Wildlife Damage Control In Kansas: Private Operators And Public Agencies, L. Andrew Madison, Philip S. Gipson
Wildlife Damage Management Conference
The private industry in wildlife damage control is expanding into territory predominantly occupied by public agencies in the past. There is a potential for overlap and competition in services provided by the public and private sectors in Kansas. We examined wildlife damage control activity reports from the Cooperative Extension Service (CES), Kansas Department of Wildlife and Parks (KDWP), and private nuisance wildlife control operators (NWCO) to determine the most common species controlled by each and their overlap in services across Kansas. The CES predominantly controlled coyotes (Canis latrans). KDWP primarily controlled beavers (Castor canadensis), deer ( …
Endangered Species And Irrigated Agriculture, Water Resource Competition In Western River Systems, United States Department Of Agriculture, Economic Research Service
Endangered Species And Irrigated Agriculture, Water Resource Competition In Western River Systems, United States Department Of Agriculture, Economic Research Service
Agriculture
This report characterizes several aspects of water allocation tradeoffs between fish species listed under the Federal Endangered Species Act and agriculture in the American West. The geographic intersection between endangered/threatened (E/T) fish and agricultural production reliant on surface water for irrigation is identified. Three findings are: (1) 235 counties, representing 22 percent of the West's counties, contain irrigated production that relies on water from rivers with E/T fish, (2) areas generating the highest revenues per acre from crop production are those most dependent on surface water irrigation, and (3) these same areas are also most likely to be drawing water …
Dietary Oxalate And Its Intestinal Absorption, Ross P. Holmes, Harold O. Goodman, Dean G. Assimos
Dietary Oxalate And Its Intestinal Absorption, Ross P. Holmes, Harold O. Goodman, Dean G. Assimos
Scanning Microscopy
Dietary oxalate is currently believed to make only a minor contribution (< 20%) to urinary oxalate excretion. A recent prospective study of stone disease suggested that dietary oxalate may be a significant risk factor. This observation led us to re-evaluate the contribution of dietary oxalate to urinary oxalate excretion. Previous studies have been hampered by inaccurate food composition tables for oxalate and inadequate methods for studying intestinal oxalate absorption. This evidence as well as factors that modify oxalate absorption are reviewed. New approaches to measure food oxalate and intestinal oxalate absorption have been examined. Capillary electrophoresis appears to be well suited for the analysis of the oxalate content of food. Two individuals consumed an oxalate-free formula diet for 7 days. This diet decreased urinary oxalate excretion by an average of 67% (18.6 mg per 24 hours) compared to oxalate excretion on self-selected diets. The absence of detectable oxalate in feces by day 6 of the diet suggested that the intestinal absorption was minimal. However, an effect of the formula diet on endogenous oxalate synthesis cannot be excluded. Restoring oxalate to the formula diet increased urinary oxalate excretion and illustrates that this experimental protocol may be well-suited for studying oxalate absorption and factors that modify it. Our results suggest that the intestinal absorption of dietary oxalate makes a substantial contribution to urinary oxalate excretion and that this absorption can be modified by decreasing oxalate intake or increasing the intakes of calcium, magnesium, and fiber.
Oxalate-Induced Damage To Renal Tubular Cells, C. R. Scheid, H. K. Koul, L. Kennington, W. A. Hill, J. Luber-Narod, J. Jonassen, T. Honeyman, M. Menon
Oxalate-Induced Damage To Renal Tubular Cells, C. R. Scheid, H. K. Koul, L. Kennington, W. A. Hill, J. Luber-Narod, J. Jonassen, T. Honeyman, M. Menon
Scanning Microscopy
Our own studies and those of others have shown that the incidence of calcium oxalate stones and plaques is markedly increased by nephrotoxins. The possible role of oxalate as a nephrotoxin has not been fully appreciated. However, recent studies in experimental animals and in cultured cells support this possibility. The results of these studies led us to hypothesize that hyperoxaluria promotes stone formation in several ways: by providing a substrate for the formation of the most common form of renal stones, calcium oxalate stones, and by inducing damage to renal epithelial cells. Damaged cells in turn would produce an environment …
X-Irradiation-Induced Disorganization Of Cytoskeletal Filaments And Cell Contacts In Ht29 Cells, Z. Somosy, M. Sass, G. Bognar, J. Kovacs, G. J. Koteles
X-Irradiation-Induced Disorganization Of Cytoskeletal Filaments And Cell Contacts In Ht29 Cells, Z. Somosy, M. Sass, G. Bognar, J. Kovacs, G. J. Koteles
Scanning Microscopy
Organization of cytoskeleton and cell contacts were studied by immunochemistry and electron microscopy in confluent HT29 cultured cells following exposure to 0.5 and 1.0 Gy doses of X-ray. Microtubules were resistant to irradiation, whereas, the actin and intermediate filaments disrupted rapidly following the treatment and their components appeared as clumps of actin and cytokeratin aggregates in the cytoplasm as demonstrated by immunochemistry. Loss of cell contacts and decrease in the number of desmosomes was also characteristic of irradiated cells. Electron microscopy revealed intact desmosomes in control cells and abnormal desmosomes in the irradiated samples characterized by the absence of tonofilaments. …
Dental Abnormalities And Early Diagnosis Of Hyperphosphatasemia, M. J. Bottero-Cornillac, A. Gaucher, C. Wang, M. Chaussidon, J. Yvon
Dental Abnormalities And Early Diagnosis Of Hyperphosphatasemia, M. J. Bottero-Cornillac, A. Gaucher, C. Wang, M. Chaussidon, J. Yvon
Scanning Microscopy
Dental hard tissue abnormalities have never been described as part of the symptoms associated with hyperphosphatasemia. Fourteen teeth obtained from a young man, who had a mild form of hyperphosphatasemia, were analyzed using scanning electron microscopy (SEM), secondary ion mass spectroscopy (SIMS), X-ray diffraction (XRD), and infrared (IR) spectroscopy. SEM revealed a thin enamel, presenting a prismatic structure with many pits, and atypical cementum and dentin showing numerous resorption areas. The X-ray diffractograms revealed poorly crystallinehydroxyapatite associated with α-tricalcium phosphate and magnesium hydroxide phases. SIMS data showed high Ca concentrations: 40.5 weight % {wt%; standard deviation (SD) = 0.13) …