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Managing Problems Caused By Urban Canada Geese, A. L. Gosser, Michael R. Conover, Terry A. Messmer Jan 1997

Managing Problems Caused By Urban Canada Geese, A. L. Gosser, Michael R. Conover, Terry A. Messmer

Wildland Resources Faculty Publications

Canada geese (Branta canadensis) started nesting in urban areas during the past 50 years. Today, most urban areas in the U. S. and Canada support breeding populations of these birds. Many of these resident goose populations are the result of a successful effort by fish and wildlife agencies to restore populations of giant Canada goose (Branta canadensis maxima), which is the largest of the 11 races of Canada geese. Their large body mass enables them to survive colder temperatures; thus, they tend to winter as far north as open water can be found.

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Advancing Skills Of Developmental Specialists, Robert L. Morgan Jan 1997

Advancing Skills Of Developmental Specialists, Robert L. Morgan

Special Education and Rehabilitation Counseling Faculty Publications

Advancing Skills of Developmental Specialists focuses on general skills related to preparing and delivering instruction, carrying out activities related to Individual Program Plans, gathering information on a person's progress, and troubleshooting problems. This program addresses topics important to many specialists, including those working with people who have various disabilities. Since its scope is broad, the program is organized around general principles that have a wide range of application. However, because the scope is broad, instructors working for some organizations may wish to supplement information in this manual with additional material. You are encouraged to supplement with additional information where necessary!

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Urban Infrastructure: Transportation, Public Utilities, Waste Management And Pollution Control, A. Bruce Bishop Jan 1997

Urban Infrastructure: Transportation, Public Utilities, Waste Management And Pollution Control, A. Bruce Bishop

Civil and Environmental Engineering Faculty Publications

Paris, tube under the channel -- London, satellite spinning above cables on the ocean floor -- New York, concrete ribbons across undulating land -- San Francisco, silver wings soaring across the Pacific -- Tokyo and Seoul. Etched against the sky are the graceful towers of mighty bridges, the broad glass and steel fronts to massive buildings, the tall slender stacks of industries exhaling; and traced on the surface are the intricate patterns of people and their machines; and buried below are the tubes and tunnels, water pipes and power conduits and communication networks along with concrete caissons and piles that …

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Acyclic Phosphonomethylether Nucleosideinhibitors Of Respiratory Viruses, Dale L. Barnard, N. Bischofberger, C. U. Kim, J. H. Huffman, R. W. Sidwell, J. P. Dougherty, W. Lew, M. A. Williams, W. Yang Jan 1997

Acyclic Phosphonomethylether Nucleosideinhibitors Of Respiratory Viruses, Dale L. Barnard, N. Bischofberger, C. U. Kim, J. H. Huffman, R. W. Sidwell, J. P. Dougherty, W. Lew, M. A. Williams, W. Yang

Animal, Dairy, and Veterinary Science Faculty Publications

A series of acyclic phosphonomethylether nucleosides were synthesized and then evaluated for inhibitory activity against respiratory viruses of clinical significance using CPE inhibition, neutral red uptake and virus yield reduction assays. Of the 20 compounds synthesized, none significantly inhibited influenza A or B viruses or respiratory syncytial virus strains A2, Long or 18537; the selective indices (SI) were less than 10. A new compound, GS-2128 (2R, 5R-9-[2,5-dihydro-5-(phosphonomethoxy)-2-furanyl]adenine; D4API), selectively inhibited adenovirus 5 (SI>10) as did GS-0577 (9-(3-hydroxy-2-phosphonylmethoxypropyl)-adenine; HPMPA) and GS-0504 [(S)-1-[3-hydroxy-2-(phosphonylmethoxypropyl)]-cytosine; HPMPC]. The 50% effective concentrations (EC50) ranged from 8-100 μg mL-1 and 50% cell inhibitory concentrations (CC50) from …

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Bovine Respiratory Disease, Clell Bagley Jan 1997

Bovine Respiratory Disease, Clell Bagley

All Current Publications

Disease of the respiratory tract is a major problem for cattle and it continues to cause serious economic losses for producers. Bovine respiratory disease (BRD) causes increased death losses as well as medication costs, labor, and lost production. Many different infectious agents may cause similar clinical signs. Multiple agents are often involved in the development of BRD.

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Correlated Confocal And Intermediate Voltage Electron Microscopy Imaging Of The Same Cells Using Sequential Fluorescence Labeling, Fixation, And Critical Point Dehydration, Lee D. Peachey, Harunori Ishikawa, Tohru Murakami Dec 1996

Correlated Confocal And Intermediate Voltage Electron Microscopy Imaging Of The Same Cells Using Sequential Fluorescence Labeling, Fixation, And Critical Point Dehydration, Lee D. Peachey, Harunori Ishikawa, Tohru Murakami

Scanning Microscopy

Confocal laser scanning microscopy (CLSM) and intermediate voltage transmission electron microscopy (IVEM) each has its own particular advantages. CLSM can examine living cells, but is particularly useful when applied to cells that have been lightly fixed, permeabilized, and stained with fluorescent-labeled antibodies for localization of specific molecular species at the resolution of the light microscope while still in the hydrated state. IVEM provides much higher resolution images, but requires more drastic preparation procedures, including dehydration. This paper presents methods for combining these complementary approaches to examine exactly the same cells sequentially by CLSM and IVEM. Cells are grown in culture …

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In Situ Hybridization, In Situ Transcription, And In Situ Polymerase Chain Reaction, L. E. De Bault, J. Gu Dec 1996

In Situ Hybridization, In Situ Transcription, And In Situ Polymerase Chain Reaction, L. E. De Bault, J. Gu

Scanning Microscopy

In situ hybridization, in situ transcription, and in situ polymerase chain reaction (PCR) are techniques used to detect DNA and RNA sequences within a cell or tissue structure. These three in situ methodologies employ the principles of recombinant DNA to form double-stranded hybrids of DNA-DNA, DNA-RNA, or RNA-RNA. The essence of in situ hybridization (ISH) is the hybridization of a labeled probe to a complementary target sequence, whereas in situ transcription (IST) is the synthesis of complementary DNA incorporating a label directly on the target DNA or RNA within a cell or tissue. In the case of in situ PCR …

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Insights, Winter, 1996, Utah State University Dec 1996

Insights, Winter, 1996, Utah State University

Discovery Magazine

Bi-annual alumni newsletter for the College of Science of Utah State University in Logan.

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A Scanning Electron Microscopy Study Of Taxus Leaves As Related To Taxonomy, G.A. Strobel, W. M. Hess Nov 1996

A Scanning Electron Microscopy Study Of Taxus Leaves As Related To Taxonomy, G.A. Strobel, W. M. Hess

Scanning Microscopy

Scanning electron microscopy, when applied to the surfaces of the needles of Taxus spp. (yew) revealed features that appear useful in the taxonomy of this tree species which yields the important anticancer drug, taxol. For instance, all of the four North American species have 3-5 rows of stomata on one-half of the abaxial leaf surface, whereas all of the others, including those from Europe and Asia, have 7-10 rows of stomata. The appearance of individual or fused papilliform epidermal cells and their arrangement on the leaf surface also is a feature that varies between species. Patterns of wax formation appeared …

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Atomic Force Microscopy Of Humic Acids, A. Ikai, R. Osterberg Oct 1996

Atomic Force Microscopy Of Humic Acids, A. Ikai, R. Osterberg

Scanning Microscopy

Atomic force microscopic (AFM) images of humic acids show discrete, globular particles, where particles of the order of magnitude 100 to 300 nm dominate the image fields; the humic acids had been grown to a steady state at pH 5.0. The AFM data are consistent with our previously reported small-angle neutron scattering (SANS) study done under similar conditions. In further agreement, the cluster-cluster interactions shown in our previous SANS study may have their counterparts in closely interacting particles appearing as twin particles in the AFM images.

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Imaging The Electrocyte Of Torpedo Marmorata By Scanning Force Microscopy, L. I. Pietrasanta, A. Schaper, G. Q. Fox, F. J. Barrantes, T. M. Jovin Oct 1996

Imaging The Electrocyte Of Torpedo Marmorata By Scanning Force Microscopy, L. I. Pietrasanta, A. Schaper, G. Q. Fox, F. J. Barrantes, T. M. Jovin

Scanning Microscopy

Scanning force microscopy (SFM) and scanning electron microscopy (SEM) were used to examine the tissue structure of the electric organ of Torpedo marmorata in air and in liquid after applying fracturing and cryosectioning techniques and chemical fixation. The electric organ is organized in columns of stacked electrocytes, arranged in a honeycomb pattern. The columns were cut along a plane normal to the cell stack and thin sections were transferred to polylysine coated glass coverslips. The polarity of the electrocytes was made apparent by immunofluorescence microscopy directed to different domains of the acetylcholine receptor (AChR), thus revealing the innervated face of …

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Paleomicrobiological Study In Dental Calculus: Streptococcus Mutans, A. Linossier, M. Gajardo, J. Olavarria Oct 1996

Paleomicrobiological Study In Dental Calculus: Streptococcus Mutans, A. Linossier, M. Gajardo, J. Olavarria

Scanning Microscopy

Morphological types of bacterial remains preserved in ancient tartar of teeth from extinct human groups, which included some communities of coastal gatherers, fishermen, hunters, and farmers, and those practicing a mixed economy, were analyzed. Previous studies have shown the presence of bacteria in ancient tartar. The aim of this work was to determine whether Streptococcus mutans was present in ancient populations (500-12,000 years old). Teeth samples were from ancient skulls obtained from different anthropological collections: the north and south of Chile (before the Spanish conquest), Palencia, Spain, and an eastern Mediterranean region (Levant). Optical microscopy showed Gram positive and Gram …

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An Optimization Model For Planning Natural Gas Purchases, Transportation, Storage And Deliverability, Anthony E. Bopp, Vijay R. Kannan, Susan W. Palocsay, Scott P. Stevens Oct 1996

An Optimization Model For Planning Natural Gas Purchases, Transportation, Storage And Deliverability, Anthony E. Bopp, Vijay R. Kannan, Susan W. Palocsay, Scott P. Stevens

Management Faculty Publications

Natural gas local distribution companies (LDCs) face the problem of managing natural gas purchases under conditions of uncertain demand and frequent price change. In this paper, we present a stochastic optimization model to solve this problem. Unlike other models, this model explicitly considers deliverability, the rate at which gas can be added to and withdrawn from a storage facility, as a variable, and considers its role in ensuring a secure supply of gas. Deliverability is often overlooked in gas supply planning, yet is a critical factor in achieving a secure gas supply. Using data from an LDC in Huntsville, Alabama, …

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X-Irradiation-Induced Changes Of The Prelysosomal And Lysosomal Compartments And Proteolysis In Ht-29 Cells, Z. Somosy, A. Takáts, G. Bognár, A. L. Kovács, Á. Telbisz, A. Rácz, J. Kovács, G. J. Köteles Sep 1996

X-Irradiation-Induced Changes Of The Prelysosomal And Lysosomal Compartments And Proteolysis In Ht-29 Cells, Z. Somosy, A. Takáts, G. Bognár, A. L. Kovács, Á. Telbisz, A. Rácz, J. Kovács, G. J. Köteles

Scanning Microscopy

As a consequence of external and internal ionizing radiation, lysosome-like bodies have been observed to increase both in size and number in some cell types. We investigated this process by morphological methods (electron microscopy, cationized ferritin uptake, acid phosphatase histochemistry, morphometry) in cultured HT-29 cells. In parallel with these studies, we measured the rate of protein degradation on the basis of 14C-valine release from prelabeled cellular proteins. We found that at 2 and 4 Gy doses of X-irradiation the volume of the vacuolar (probably lysosomal) compartment increased without detectable changes of acid phosphatase activity. A 2 Gy irradiation dose did …

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Streamlining Satellite Development, Testing, And Operations Using A Cots Command And Telemetry Package, Andrew Lewin Sep 1996

Streamlining Satellite Development, Testing, And Operations Using A Cots Command And Telemetry Package, Andrew Lewin

Small Satellite Conference

This paper discusses how modern, commercial off-the-shelf (COTS) command and telemetry packages and data analysis tools can reduce cost and tighten schedules. By including the ground station from the start of the program life cycle, organizations can improve efficiency through the parallelization of activities, reuse of program resources, improvement of processes, and elimination of development tasks. The benefits of this approach are substantial for a single program. However, corporations can realize even greater productivity when subsequent programs build upon the strong foundation created by their predecessors. The methods introduced in this paper are brought to life through the example of …

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The Near Ground System: Efficient Mission Command And Control, Gary Whitworth, Anthony Somers, William Stratton Sep 1996

The Near Ground System: Efficient Mission Command And Control, Gary Whitworth, Anthony Somers, William Stratton

Small Satellite Conference

The Near Earth Asteroid Rendezvous (NEAR) mission is designed to place a spacecraft in orbit about the near-Earth asteroid Eros in January 1999. The February 17, 1996 launch was the first in the Discovery series of small planetary spacecraft missions. Designed in keeping with the intent of the Discovery program to reduce development and mission operations costs for planetary missions. The ground system command and control architecture consists of a single, flexible network, used commonly and simultaneously for Integration and Test (I&T) operations, launch operations, and Mission Operations. After a 27 month mission development program, NEAR Spacecraft Operations are conducted …

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A Radiation-Hardened, Computer For Satellite Applications, John Gaona Sep 1996

A Radiation-Hardened, Computer For Satellite Applications, John Gaona

Small Satellite Conference

This paper describes high reliability radiation hardened computers built by Sandia for application aboard Department Of Energy (DOE) Satellite programs requiring 32-bit processing. The computers highlight a radiation hardened (1 Mrad(Si)) R3000 executing up to 10 Million Reduced Instruction Set Instructions (RISC) Per Second (MIPS), a dual purpose module control bus used for real-time fault and power management which allows for extended mission operation on as little as 1.2 watts, and a Local Area Network capable of 480 Megabits per second. The Central Processing Unit (CPU) is the NASA Goddard R3000 nicknamed the "Mongoose or Mongoose 1". The Sandia Satellite …

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The Data-Chaser Hitchhiker Project As A Demonstration Of Distributed Operations For Small Satellites, Ryan Shepperd, Jason Willis Sep 1996

The Data-Chaser Hitchhiker Project As A Demonstration Of Distributed Operations For Small Satellites, Ryan Shepperd, Jason Willis

Small Satellite Conference

DATA-CHASER consists of two synergetic projects, DATA and CHASER, which will fly as a Hitchhiker payload aboard the Space Shuttle in 1997. A technology experiment, DATA (Distribution and Automation Technology Advancement) seeks to advance human support technology. CHASER (Colorado Hitchhiker and Student Experiment of Solar Radiation) is a solar science experiment that serves to test DATA. The DATA technologies support cooperative operations distributed between different geographic sites as well as between humans and machines. Though demonstrated with a small Shuttle payload, such technologies apply equally well to small satellites.

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A Beacon Monitoring System For Automated Fault Management Operations, Michael Swartwout, Christopher Kitts Sep 1996

A Beacon Monitoring System For Automated Fault Management Operations, Michael Swartwout, Christopher Kitts

Small Satellite Conference

Stanford's Space Systems Development Laboratory (SSDL) has initiated a new space system technology initiative in order to develop, demonstrate, and validate a beacon monitoring system for spacecraft. This system consists of automated fault detection on board a spacecraft, a state of health beacon signal broadcast by the spacecraft, a ground based monitoring network, and a mission control center capable of efficiently integrating this health assessment strategy into its operating architecture. SSDL is investigating this technique by identifying fundamental design drivers, developing a system responsive to these drivers, and deploying the resulting system on micro spacecraft and within SSDL's developing, global, …

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Automating The Operations Of The Orbcomm Constellation, John Tandler Sep 1996

Automating The Operations Of The Orbcomm Constellation, John Tandler

Small Satellite Conference

The ORBCOMM system is the world's first commercial LEO two-way data communications system. The ORBCOMM system, when fully deployed, will use a constellation of small satellites to provide users with low-cost near-continuous data relay and position determination services on a seamless worldwide basis. Due to the large number of spacecraft, and the need to keep operational costs low, automation will play a significant role in the operation of the ORBCOMM constellation. This paper discusses the principle operational functions needed to maintain the ORBCOMM satellites, and the design process for detennining the degree of automation for each.

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A Fully Implemented Semi-Automated Ground-Control System For The Terriers Satellite, Nicolas Groleau, Larry Kiser, Forrest Girouard, Allen Hopkins, Tom Morgan, Supriya Chakrabarti, Timothy Cook, Daniel Cotton, Paul Dell Sep 1996

A Fully Implemented Semi-Automated Ground-Control System For The Terriers Satellite, Nicolas Groleau, Larry Kiser, Forrest Girouard, Allen Hopkins, Tom Morgan, Supriya Chakrabarti, Timothy Cook, Daniel Cotton, Paul Dell

Small Satellite Conference

In a collaborative effort, NASA Ames Research Center, the University of California Berkeley, and Boston University have developed ground software for a small satellite. This paper describes the ground communication software, the data archiving and serving system, and the data display and satellite scheduling in sufficient detail to allow prospective small satellite operators to explore its possible use or extension.

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A Geomagnetic Smallsat Observatory For Operation In A 200 Km Altitude Low Earth Orbit, W.R. Baron, K.S. Schultz, P.L. Thomsen Sep 1996

A Geomagnetic Smallsat Observatory For Operation In A 200 Km Altitude Low Earth Orbit, W.R. Baron, K.S. Schultz, P.L. Thomsen

Small Satellite Conference

An altitude of 200 km can improve the accuracy of measurements of the earth's crustal fields and low altitude ionospheric currents. However, atmospheric drag at this altitude requires altitude maintenance to provide useful orbital lifetime. In this study, a small-satellite conceptual design is developed to meet those requirements. The box shaped satellite basic configuration consists of science and electronics module mounted above a propulsion module. Overall satellite body size is 0.71 m x 0.71 m x 1.58 m long. The science and electronics module accommodates an 8 meter long deployable, non-magnetic boom carrying a scalar magnetometer, a star imager and …

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Smex·Lite - Nasa's Next Generation Small Explorer, James Watzin Sep 1996

Smex·Lite - Nasa's Next Generation Small Explorer, James Watzin

Small Satellite Conference

High space mission costs continue to be a major problem for the aerospace community. The National Aeronautics and Space Administration (NASA) Small Explorer (SMEX) Project has made great strides in reducing mission costs by implementing a building block architecture and streamlined mission operations. The project aims to substantially reduce both spacecraft and mission costs further through the introduction of advanced design tools and an advanced technology "function-sliced" architecture. Spacecraft autonomy will be extended such that classical mission operations will be eliminated altogether. This paper will describe the fundamental elements of the planned cost reduction and the "function-sliced" architecture as well …

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The Near Discovery Mission: Lessons Learned, R.H. Maurer, A.G. Santo Sep 1996

The Near Discovery Mission: Lessons Learned, R.H. Maurer, A.G. Santo

Small Satellite Conference

Under a contract from NASA The Johns Hopkins University Applied Physics Laboratory built and launched a spacecraft that will rendezvous and orbit the near earth asteroid 433 Eros. The Near Earth Asteroid Rendezvous (NEAR) spacecraft is the first under NASA's Discovery Program, which is a series of low cost solar system missions. While in orbit around Eros the spacecraft will measure the bulk, surface, and internal properties of the asteroid for 10 months. This paper describes the lessons learned from design, test, and fabrication that are appropriate to other programs in quick development, or of an interplanetary nature.

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Orbcomm Satellites Launch And Initial Flight Operations, David Steffy Sep 1996

Orbcomm Satellites Launch And Initial Flight Operations, David Steffy

Small Satellite Conference

The ORBCOMM Flight Model (FM) 1&2 and MicroLab I spacecraft were flawlessly launched by a Pegasus® vehicle on April 3, 1995. Following sequential separation from the Pegasus third stage, the spacecraft deployed solar arrays and antenna assemblies, autonomously de-tumbled, and acquired sun-nadir attitude. Both ORBCOMM spacecraft connected automatically with a Gateway Earth Station (GES) about 8 hours after launch. Nominal early passes focused on post-launch housekeeping tasks. However, a series of anomalies developed: including loss of gateway uplink, gateway downlink transmitter oscillation, poor GPS position fixing, subscriber downlink transmitter lock-up, and several software problems. All these conditions were unique to …

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Mightysat I: Technology In Space For About A Nickel ($M), R.J. Davis, Capt J.F. Monahan, T.J. Itchkawich Sep 1996

Mightysat I: Technology In Space For About A Nickel ($M), R.J. Davis, Capt J.F. Monahan, T.J. Itchkawich

Small Satellite Conference

MightySat is a United States Air Force (USAF) Phillips Laboratory (PL) multi-mission, small satellite program dedicated to providing frequent, inexpensive, on-orbit demonstrations of high payoff space system technologies. PL is the USAF center for space technology research & development. MightySat platforms provide the on-orbit "lab bench" for responsively testing emerging technologies to ensure their readiness for operational Air Force missions. This paper focuses on the MightySat I vehicle, developed largely by CTA Space Systems (CTASS) in McLean, VA. MightySat I, also 150 lb satellite designed for ejection from the Space Shuttle, is now in final integration and testing just 15 …

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Combined Bronchoalveolar-Vascular Casting Of The Canine Lung, John A. Nettum Sep 1996

Combined Bronchoalveolar-Vascular Casting Of The Canine Lung, John A. Nettum

Scanning Microscopy

Canine bronchoalveolar and vascular corrosion casts were prepared using unfixed tissue and Dow-Corning Room Temperature Vulcanizing Silastic® 734. The casts were observed using stereo light microscopy and scanning electron microscopy. The casts show the relationship between the vasculature and airway and demonstrate intricate microanatomical details. Also, microvasculature filling was enhanced using unfixed tissue as compared to my previously described technique using fixed tissue. Prewashing the microvasculature with cold phosphate buffered saline appeared to facilitate microvascular filling with silicone rubber. The described method is useful for rapidly making durable models for studying the normal respiratory airway and microvasculature. It should be …

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Emerging Applications Of Fluorescence Spectroscopy To Cellular Imaging: Lifetime Imaging, Metal-Ligand Probes, Multi-Photon Excitation And Light Quenching, Joseph R. Lakowicz Sep 1996

Emerging Applications Of Fluorescence Spectroscopy To Cellular Imaging: Lifetime Imaging, Metal-Ligand Probes, Multi-Photon Excitation And Light Quenching, Joseph R. Lakowicz

Scanning Microscopy

Advances in time-resolved fluorescence spectroscopy can be applied to cellular imaging. Fluorescence lifetime imaging microscopy (FLIM) creates image contrast based on the decay time of sensing probes at each point in a two-dimensional image. FLIM allows imaging of Ca2+ and other ions without the need for wavelength-ratiometric probes. Ca2+ imaging can be performed by FLIM with visible wavelength excitation. Instrumentation for FLIM is potentially simple enough to be present in most research laboratories. Applications of fluorescence are often limited by the lack of suitable fluorophores. New, highly photostable probes allow off-gating of the prompt autofluorescence, and measurement of …

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Sharing Common Ground On Western Rangelands: Proceedings Of A Livestock/Big Game Symposium, Keith E. Evans, Intermountain Research Station, Usdsa Forest Service, U.S. Department Of Commerce, United States Department Of Agriculture, Forest Service Sep 1996

Sharing Common Ground On Western Rangelands: Proceedings Of A Livestock/Big Game Symposium, Keith E. Evans, Intermountain Research Station, Usdsa Forest Service, U.S. Department Of Commerce, United States Department Of Agriculture, Forest Service

All U.S. Government Documents (Utah Regional Depository)

This proceedings includes 37 papers and posters presented at the "Sharing Common Ground" symposium. The information represents the progress made in livestock/big game management since the 1991 symposium with the theme of "Seeking Common Ground." The broad range of topics includes the rangeland resource, the science of livestock/big game interactions, the human dimension, and the success stories from the seeking common ground partnership demonstration projects.

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12th Biennial Cheese Industry Conference, Various Authors Aug 1996

12th Biennial Cheese Industry Conference, Various Authors

Cheese Industry Conference

No abstract provided.

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