Digital Commons Network^™

Control Of Ring-Billed Gulls And Herring Gulls Nesting At Urban And Industrial Sites In Ontario, 1987-1990, Hans Blokpoel, Gaston D. Tessier

Wildlife Damage Management Conference

Large numbers of ring-billed gulls (Larus delawarensis) and much smaller numbers of herring gulls (L. argentatus) have begun to nest at several industrial and urban sites in the Canadian Great Lakes causing a flight safety problem (nesting at end of a runway), disrupting commercial operations (nesting on roads and storage yards), and creating nuisances (noise and smell of the colony and defecations on equipment). Gulls were prevented from nesting by scaring (using tethered birds of prey, moving vehicles, and foot patrols equipped with cracker shells) or by physically excluding them (by installing monofilament lines). At some …

Strategies To Control Rodent Damage In Sugar Bushes: An Update, Alan May, John Austin, Dennis Slate

Wildlife Damage Management Conference

Efficacy trials using zinc phosphide (ZP) steam-rolled oats (2% a.i., EPA Reg. No. 56228-5), and cholecalciferol mixed (CHOL) grain bait (.075% a.i., EPA Reg. No. 12455-57), were conducted during summer 1990 to compare their effectiveness in controlling rodent damage to plastic tubing systems used to collect sap from sugar maples (Acer saccharum) in Vennont A 24( c) Special Local Needs registration for ZP to control rodent damage has existed in Vennont since the 19(i()s. However, no fonnal efficacy trials have been conducted for this specific use of ZP, and the previous supplemental label did not include instructions for …

Use Of Drc-1339 To Eliminate Gulls And Re-Establish A Tern Nesting Colony In Buzzards Bay, Massachusetts, Bradford G. Blodget, Laura Henze

Wildlife Damage Management Conference

DRC-1339 was used in 1990 and 1991 to reverse gull (Laridae) domination at Ram Island in Mattapoisett, Massachusetts, a site historically important to the endangered roseate tern (Sterna dougallii). Reduction of the very dense gull population at Ram Island and reclamation of the island for nesting terns is seen as a challenge, especially considering the site's proximity to New Bedford, the largest commercial fishery on the Atlantic Seaboard. During 1990 and 1991, gull productivity at Ram Island was completely suppressed. Eight hundred twenty-three and 172 gulls were recovered dead following treatments in 1990 and 1991. Females predominated nearly …

Educational Opportunities At The University Of Nebraska-Lincoln, Scott E. Hygnstrom

Wildlife Damage Management Conference

University students, particularly those enrolled in natural resources programs, make up one of the smallest, yet potentially most important and influential audiences for wildlife damage professionals. Considering that these students will be tomorrow's natural resources technicians, biologists, and administrators, I feel that it is critical that we provide them factual information about wildlife damage to increase their awareness of potential problems and solutions, and increase their ability to make well-informed decisions.

The Matrix Of Urinary Tract Stones: Protein Composition, Antigenicity, And Ultrastructure, J. P. Binette, M. B. Binette

Scanning Microscopy

We have extracted proteins from urinary tract stones by electrodialysis and have developed antisera to the core and the shell of a renal stone. The protein composition varies between stones but is identical in the core and the shell of the same stone. One stone antigen is present in the urine of normal individuals and stone formers, as well as in cholesterol gallstone extracts. Electron microscopy of the core of a urate-calcium oxalate stone before and after demineralization reveals a fibrillar structure associated with mineral deposits, as well as aggregates of crystals.

Drug Residues And Food Safety, Clell V. Bagley Dvm

Archived Food and Health Publications

Publication discusses drug residues in food animal products and food safety concerning drug residues.

Utah Science Vol. 52 No. 3, Fall 1991

Utah Science

88The Dean Retires After 21 Year at the Helm

Sustainable Agriculture Takes Root in Utah

90 Computer Program Help Agriculture Prepare for Environrnental Regulations

92 Sustainable Agriculture: Easy to Support, Difficult to Implement

97 The Fieldwork of Innovation

Better Methods of Pest Control

99 Several Insects Promise to Control Weeds

102 New Farming Tactics May Not Reduce Need for Herbicides

104 Studies Examine Biocontrol of Russian Wheat Aphid

105 Research in Brief

Conserving and Protecting Water

109 Conserving Water by a Reduction in Leaching

110 Is There Enough Water for Both Farms and Cities along the Wasatch Front?

Range Management …

The Effect Of Bacterial Endotoxin Upon The Morphology Of The Tectorial Membrane And Stereocilia In The Guinea Pig Cochlea, S. D. Comis, M. P. Osborne, M. J. Tarlow

Scanning Microscopy

Endotoxin of E coli was microperfused into scala tympani or injected into the cerebrospinal fluid in anaesthetised pigmented guinea pigs. The effects of endotoxin on the cochlea were studied using electrophysiological techniques and scanning electron microscopy. We found a drop in the amplitude of the cochlear microphonics and compound action potentials 2 to 2.5 hours after injection. There were also changes in the morphology of stereocilia and the tectorial membrane. The stereocilia lost their rigidity and the tectorial membrane appeared swollen. These effects were less severe in animals which were pretreated with dexamethasone.

The Scanning Electron Microscope: How Valuable In The Evaluation Of Small Bowel Mucosal Pathology In Chronic Childhood Diarrhea?, J. Rainer Poley

Scanning Microscopy

Data are presented on scanning electron microscopy (SEM) on small intestinal biopsies of children with chronic diarrhea. In particular, there were 230 patients aged 3 months to 13 years with the following diagnoses: chronic nonspecific diarrhea, cow's milk protein intolerance, soy protein intolerance, giardiasis, cystic fibrosis, gluten-sensitive enteropathy, isolated lactase deficiency, isolated sucrase-isomaltase lactase deficiency, microvillus inclusion disease, rotavirus ententis, protracted diarrhea of infancy, chylomicron retention disease, visceral myopathy and villous asthenia.

Examination of biopsied intestinal mucosa by SEM has yielded important new information and insights on structural pathology and ultrastructural topography. Many of the observed changes helped to better …

Proceedings From The 28th Annual Marschall Italian Seminar, Various Authors

Cheese Industry Conference

Since 1983, the Wisconsin Milk Marketing Board, funded by the 33,000 dairy farmers, has formed a unique partnership with the Wisconsin cheese manufacturers in their efforts to market the products they make with advertising, promotion, education and research programs.

These marketing programs have focused on Wisconsin's cheese quality and cheese making expertise as the foundation for the strategic direction that WMMB has set for our programs and services. Communications strategy was developed to capitalize on the equity in the name "Wisconsin" which has been confirmed through consumer and foodservice market research.

This presentation will give an overview of WMMB's programs …

Proton Induced X-Ray Emission Analysis Of Biological Specimens - Past And Future, B. Forslind, K. G. Malmqvist, J. Pallon

Scanning Microscopy

Proton induced X-ray emission (PIXE) analysis is a comparatively new member of the family of spectrographic methods. In the last decade PIXE techniques have been applied to biological problems with great success. This review gives a condensed presentation of recent developments in biological (medical, zoological, and botanical) applications of PIXE analysis with special focus on factors which commonly influence the results, such as calibration, contamination, and preparation. The great advantage of PIXE analysis in studying physiologically important trace elements such as Zn, Mg, Fe, and Cu is underlined. Elemental mapping not only allows quantitative elemental analysis, but can also demonstrate …

Effects Of Modulated And Continuous Microwave Irradiation On The Morphology And Cell Surface Negative Charge Of 3t3 Fibroblasts, Z. Somosy, G. Thuróczy, T. Kubasova, J. Kovács, L. D. Szabó

Scanning Microscopy

Mouse embryo 3T3 cells were irradiated with 2450 MHz continuous and low frequency (16 Hz) square modulated waves of absorbed energy ranging from 0.0024 to 2.4 mW/g. The low frequency modulated microwave irradiation yielded more morphological cell changes than did the continuous microwave fields of the same intensity. The amount of free negative charges (cationized ferritin binding) on cell surfaces decreased following irradiation by modulated waves but remained unchanged under the effect of a continuous field of the same dose. Modulated waves of 0.024 mW/g dose increased the ruffling activity of the cells, and caused ultrastructural alteration in the cytoplasm. …

Preparation And Characterization Of Some Particulate Materials In The Aluminum Industry, A. Csordás-Tóth, B. Szikora, J. Kürthy-Komlósy, I. Tassy

Scanning Microscopy

Preparation and characterization techniques for the following particulate materials are reviewed: micromineralogical samples of bauxite, alumina and its trihydroxide, as well as sedimentary and respirable particles. Scanning electron microscopy (SEM), energy dispersive X-ray microanalysis (EDS) and image analysis were used to characterize the microminerals of bauxite. Comparisons were made among micromineralogical samples with various grain size fractions and the degree of weathering could be quantified. Programs were developed for characterization of the sandy and floury types of aluminum trihydroxide and alumina. We have used backscattered electron SEM images to characterize the size and shape of various aluminum trihydroxides. Comparison could …

Soesat Low Cost Telemetry Ground Station, David Horton

Small Satellite Conference

The School Of Engineering SATellite (SOESAT) will be fabricated and donated by American-Microsat Inc. of Sunnyvale, California. SOESAT will carry a radiation sensor that will measure the secondary emission internal to the satellite caused by the impinging of external primary radiation. At the time of this abstract SOESAT has not been manifested on a launch vehicle. A fourth quarter '92 launch into a geotransfer orbit on a European Space Agency Ariane is being investigated. Low earth orbit launch alternatives on various boosters are also being investigated. Command and control of SOESAT will be accomplished using the telemetry ground station built …

Spaceborne Application Multiprocessor Operating System, Gary Grisbeck, Wesley Webber

Small Satellite Conference

Control Data Corporation, as part of a joint development program with the Boeing Electronics Company, built a nine node, three active module multiprocessor called SPA-l or Spaceborne Processor Array-I. (SPA was the processing system concept proposed as the heart of a multi-mission autonomous surveillance satellite in a paper presented at the 4th Annual AIAA/Utah State Small Satellite Conference in 1990). Since then, an operating system called the Operational Kernel, or OK, has been completed, tested, and functionally validated in a demonstration using the SPA-l. This demo featured fully autonomous on-board control of data movement, fault detection, fault isolation, hardware reconfiguration, …

System Design For Commercial Microsatellite Missions, Dino Lorenzini, Vincenzo Violi

Small Satellite Conference

This paper presents the results of a Microsat Feasibility Study conducted by Telespazio S.p.A and Interferometrics Inc. The study examined the feasibility of three possible near term space missions: (1) data collection and relay for environmental monitoring, (2) mobile messaging and digital communications, and (3) remote sensing of sulfur dioxide content in the atmosphere and detection of wild fires. The generalized system architecture consists of a network of low Earth orbit microsatellites, an array of low cost fixed and mobile User Terminals for either communications or data collection, and a Mission Control Center tailored to the specific mission. A prototype …

Medsat: A Small Satellite For Malaria Early Warning And Control, James Slawski, John Vesecky, Byron Wood, James Lawless

Small Satellite Conference

This paper presents the design for a low cost, light satellite used to aid in the control of vector-borne diseases like malaria. The 340 kg satellite contains both a synthetic aperture radar and a visual/infrared multispectral scanner for remotely sensing the region of interest. Most of the design incorporates well established technology, but innovative features include the Pegasus launch vehicle, low mass and volume SAR and VIS/IR sensors, integrated design, low power SAR operation, microprocessor power system control, and advanced data compression and storage. This paper describes the main design considerations of the project which include, the remote sensing task, …

Auroral Cluster: A Space Physics Mission For Multiple, Electronically Tethered Small Satellites, J.P. Andrews, J.R. Scherrer, J.H. Waite, J.L. Burch

Small Satellite Conference

Auroral Cluster is a space physics mission that has been identified by the NASA Space Physics Strategic Implementation Study as a candidate for flight in the next decade. Auroral Cluster will employ multiple spacecraft outfitted with similar complements of science instruments allowing simultaneous multipoint plasma measurements in the Earth's auroral regions. Co-orbiting small satellites (mass < 400 kg each) that are electronically "tethered" to share distributed spacecraft systems represent an efficient approach for achieving the science goals of the Auroral Cluster mission. Multisatellite missions represent a new trend in gathering space science data and pose many new and difficult challenges for the space systems engineer. The results of an Auroral Cluster feasibility study, which discusses a variety of mission trade-offs, are presented. A discussion of the science background and mission goals is used to identify the technical drivers for the design of the multiple spacecraft system. A mission plan and some considerations for a Auroral Cluster satellite design are presented. Special consideration is given to the spacecraft subsystems that will allow the system to be operated as a network of electronically tethered interdependent small satellites. These subsystems include attitude determination, spatial separation knowledge and control, data storage, and intersatellite communication.

Small Spacecraft Activities At Jpl, Ross Jones

Small Satellite Conference

This paper presents a brief technical description of some of the small spacecraft concepts prepared by JPL for various sponsors. Some of JPL's work in microspacecraft is presented. The paper contains brief technical descriptions of the following four small spacecraft conceptual designs: 1) Lunar GAS, 2) Polar Mesoscale Explorer, 3) DARPA SHF and 4) Discovery. Since 1986, JPL has studied more than 10 small spacecraft including those to be presented here.

Heterogeneity Of Crystals Attached To The Human Enamel And Cementum Surfaces After Calculus Removal In Vitro, T. Kodaka, K. Debari, M. Yamada

Scanning Microscopy

Twenty one extracted human teeth with dental calculi on the enamel and cementum surfaces, fixed in 10% neutral formaldehyde, were selected for this study. After ethanol dehydration and air drying, these calculi were removed by tweezers to observe the teeth surfaces under them. The inspection of these surfaces using SEM and EDX revealed hexahedrally based crystals including pseudocuboidal, rhombohedral and variable rugged rocky shapes. These crystals were identified as Mg-containing whitlockite. The pseudocuboidal crystals, measuring about 4.5 μmin maximum length, were widely distributed on the cervical enamel surface previously covered by calculus. On the root surface, however, these areas decreased …

Utah Science Vol. 52 No. 2, Summer 1991

Utah Science

42 A Focus on Natural Resources Range Science Department

43 Determining How Rangeland Plants Get Along

44 Desert Crusts: Irreplaceable Veneer or Ecological Frosting?

47 Rhizomes vs. Tussocks: Which Grow Better?

48 Like Us, Plants will Notice Ozone Depletion

50 Grazing May Be Unfairly Blamed for Changes in Pristine Areas

51 Underground Events May Be Root of Grass Behavior Geography and Earth Resources Department

53 New Geography Simplifies Complexity Fisheries and Wildlife Department

55 Complexity, Human Expectations Alter Fisheries and Wildlife Research

56 Healthy Fish--Barometer of a Healthy Environment

59 USU Program Helps Manage Forests for Fish

60 Millions Flock …

Preparation Of Inner Ear Sensory Hair Bundles For High Resolution Scanning Electron Microscopy, M. P. Osborne, S. D. Comis

Scanning Microscopy

Chemical fixation techniques for preservation of sensory hair bundles in the mammalian inner ear for scanning electron microscopy (SEM) are reviewed. Fixatives employed were glutaraldehyde, glutaraldehyde-picrate, glutaraldehyde-tannic acid, glutaraldehyde-formaldehyde, glutaraldehyde followed by postfixation with osmium tetroxide and the osmium thiocarbohydrazide (OTOTO) method. Dehydration was routinely accomplished with ascending grades of acetone followed by critical point drying with liquid CO₂ or fluorocarbon sublimation. Specimens other than those prepared by the OTOTO method were metal coated with gold, gold-palladium or platinum. Material was viewed at high resolution (2-3 nm) in a transmission electron microscope (TEM) fitted with a scanning system and …

Scanning Electron Microscopic Analysis Of Dental Wear On The Heavily Worn Second Molars Of The Wild Japanese Monkey (Macaca Fuscata), Teruyuki Hojo

Scanning Microscopy

Microscopic features on scanning electron micro-graphs of epoxy-replicas of the second molars of nine wild-caught adult female Japanese monkeys, Macaca fuscata, from Oita Takasakiyama, Kyushu, were measured using a digitizer. These monkeys had been fed a monkey-diet during three or four days of captivity before replicas were made. Six of these specimens showed such heavily worn second molars that narrow peripheral enamel bands surrounded large dentin exposures and the cusps of the others had been worn off. Microwear measurements from sites near facet 9 were compared with those of facet 9 of three kinds of hard-object feeding primates from …

Pesticide Movement In Response To Furrow Irrigation And Pesticide Parameters, Richard C. Peralta, Robert W. Hill, Howard Deer

All Archived Publications

Production of adequate supplies of food and fiber currently requires that pesticides be used to limit crop losses from insects, pathogens, weeds and other pests. The term pesticide refers to a large number ofchemical compounds. Pesticides include acaricides, fungicides, herbicides, insecticides, nematicides, algicides, arboricides, zoocides, and many more.

The Effects Of Drought On Yellow-Eyed Junco Breeding Biology And Energetics, Thomas C. Gumbart

Biology

Data presented in this thesis were collected on a population of Yellow-eyed Juncos (Junco phaeonotus) in the Chiricahua Mountains of southeastern Arizona, from 1985 to 1990. Severe drought and an associated reduction in the food supply occurred at the study site in 1989 and 1990. This provided the opportunity to document the effects of stressful environmental conditions on the breeding biology of the juncos. My field work covered the 1989 season, and for comparative purposes these thesis data are combined with data previously collected by Dr. Kimberly A. Sullivan and Dr. Wesley W. Weathers. Clutch size did not …

Utah State University Commencement, 1991 – Main Campus, Utah State University

Commencement Programs

Ninety-Eighth Annual Commencement of Utah State University

Immunocytochemical And Histopathological Investigation Of The Hypothalamic-Pituitary-Testicular Axis Of The Primary Infertile Dark Mink (Mustela Vison), Baha M. Alak

Biology

This study was designed to investigate the hypothalamic-pituitary-testicular axis of the primary infertile dark male mink. The specific objectives were (1) to describe the morphology and localization of the neurons containing gonadotropin-releasing hormone (GnRH) and its precursor (proGnRH) within the preoptic-basal hypothalamus (POA-BH) of the sexually mature dark male mink, (2) to ascertain any differences in the number or the distribution of GnRH- and proGnRH-containing neurons between the fertile and infertile dark male mink, (3) to determine if GnRH and proGnRH are produced in insufficient amounts by the hypothalami of primary infertile dark male mink, and (4) to describe the …

Effects Of Alternative Sprinkler Irrigation Parameters On Pesticide Movement, Ahmad Yar Ranjha, Richard C. Peralta, Robert W. Hill, Antonio Maria Requena, Howard M. Deer, Majid Ehteshami

Civil and Environmental Engineering Faculty Publications

The relative reduction in potential ground-water contamination due to pesticides at several sites in Utah was determined by comparing alternative irrigation system designs, water management practices and pesticides. Alternative sprinkler irrigation distribution coefficients were used to estimate infiltration depths. The movement of pesticides through soils following sprinkler irrigations was simulated with one-dimensional model. Pesticide contamination of ground water can be reduced by careful selection of pesticides, properly designed irrigation systems and improved water management techniques. Procedures for selecting an appropriate sprinkler design and pesticide are presented.

A Multivariate Study Of Marital Quality, David W. Bradley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Marital quality has been defined as the subjective feelings of happiness and satisfaction that a spouse experiences when considering all current aspects of his/her marriage. This study examined five dependent variables regressed on ten independent variables. The sample for this study came from the National Survey of Families and Households. Five hypotheses were found to be supported , with at least three of the five dependent variables showing statistical significance. Age at the time of marriage, education, health and well-being, and couples ' satisfaction in the parenting role were positively related to marital quality. The length of the marriage was …

Intergenerational Transmission Of Family Strengths, John R. Bee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this research was to study several dimensions of family strengths in family systems and to determine to what degree these strengths are passed from one generation to the next.

The sample consisted of 23 couples, constituting the married child generation, and each husband's father and each wife's mother, constituting the parent generation, for a total of 23 family systems and a total N of 92 . Each person involved in the study had to be in their first marriage and have at least one child.

A significant (alpha .05) difference was found between the father and son …