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Planting Date Effects On The Germinability And Seedling Vigor Of Abutilon Theophrasti Seeds, R E. Nurse, A Ditommaso, Ricardo A. Ramirez

Biology Faculty Publications

Abutilon theophrasti (Malvaceae) is a troublesome annual weed in many maize and soybean cropping systems of Canada and the United States. Seeds of A. theophrasti exhibit physical dormancy. Differences in the growing environment of parent plants may influence the germinability of seeds and vigour of seedlings produced by this species because of variation in resource allocation to seed development. Thus, the germinability of seeds and subsequent seedling vigour were examined for A. theophrasti plants grown in monoculture at a density of 4.2 plants m -2 under varying natural photoperiods in central New York State. Treatments were established by transplanting A. …

Historical Biogeography Of Lowland Species Of Toads (Bufo) Across The Trans-Mexican Neovolcanic Belt And The Isthmus Of Tehuantepec, Benson H. Morrill

Undergraduate Honors Capstone Projects

The eastern extension of the massive Trans-Mexican Neovolcanic Belt 1 (TMNB) contacts the Atlantic Coast in central Veracruz, Mexico. Although it is not a massive structure at this eastern terminus, the TMNB has nonetheless effected vicariance and subsequent speciation in several species groups, including bufonid toads and freshwater fishes. In this study, we examined mtDNA sequences (cyt b, 16S) from populations of two different species groups of toads (B. marinus, and the B. nebulifer-B. valliceps species pair) from a lowland transect across the eastern end of the TMNB. We also included samples from outside this region (e.g., Costa …

Landscape Assessment For The Buckskin Mountain Area, Wildlife Habitat Improvement, Bureau Of Land Management

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

No abstract provided.

Soil-Water-Use Characteristics Of Precision-Irrigated Buffalograss And Kentucky Bluegrass, J. Ryan Stewart, Roger Kjelgren, Paul G. Johnson, Michael R. Kuhns

Plants, Soils, and Climate Faculty Publications

As landscape water conservation becomes more important in the American West, pubic interest in using low water-use turfgrasses is increasing. Little is known about soil water extraction characteristics that contribute to low water use. We investigated how buffalograss (Buchloë dactyloides (Nutt.) Engelm) and Kentucky bluegrass (Poa pratensis L.), considered to be low and high water-use species, respectively, extract soil water in terms of rooting depth and use of available water. Leaf canopy temperature, air temperature, and vapor pressure deficit (VPD) were measured, and a relationship developed between leaf canopy temperature minus air temperature (TL-TA) and VPD for each species under …

Real-Time Registration And Display Of Confocal Microscope Imagery For Multiple-Band Analysis, Scott E. Budge, A.M. Mayampurath, J.C. Solinsky

Electrical and Computer Engineering Faculty Publications

Multiple images acquired in real-time from a confocal microscope in different illumination wavebands are used to construct a three-dimensional understanding of living cell signal propagation. Registration, fusion, and display of these images are performed in real-time using field programmable gate array (FPGA) technology to allow the biological scientist to observe time critical signaling processes as they occur. The registration and display system operates at a rate of up to 15 frames/s, and performs dark offset correction and noise reduction, followed by non-linear correction for lens warp and focal plane tilt, and finally correction for spatial mismatch between the different wavebands. …

Proposed Experimental Actions For Water Years 2005-2006 Colorado River, Arizona, In Glen Canyon National Recreation Area And Grand Canyon National Park, U.S. Department Of The Interior, Bureau Of Reclamation, National Park Service, U.S. Geological Survey

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

In September 2002 the Bureau of Reclamation, National Park Service (NPS), and U.S. Geological Survey released an environmental assessment (EA) on proposed experimental releases from Glen Canyon Dam and removal of non‐native fish from the Colorado River in Grand Canyon, Arizona (Bureau of Reclamation, NPS, and USGS 2002). The experiment was developed by the Grand Canyon Monitoring and Research Center of the U.S. Geological Survey (GCMRC), cooperating scientists, and the Technical Work Group (TWG) of the Glen Canyon Dam Adaptive Management Program (GCDAMP). It was recommended to the Secretary of the Interior by the Adaptive Management Work Group (AMWG), a …

Developed Pumping Strategies For Mather Afb Tce Plume, Richard C. Peralta, Bassel Timani

Civil and Environmental Engineering Faculty Publications

Accomplishments prior to BCT Meeting/Phone Conference of 14 October 2004 Prior to 14 October 2004, the best pumping strategy USU achieved manually completely contains both PCE and TCE1 (within revised containment zones proposed by USU on that date), at the end of years 2, 3, 4, 5 and 5-year intervals thereafter. This strategy uses two new extraction wells (USUE3 and USUE4). The strategy did not utilize a recently constructed well EW-12B. USU did not previously know about EW-12B and the well package USU received did not indicate a well at its location, cell (3,58,43). On 14 October, USU also learned …

Curriculum Subcommittee Minutes, November 4, 2004, Utah State University

Educational Policies Committee

College of Business

• New Course

School of Accountancy

• Credit Hour Change, Prerequisite Change, Course Description Change, Course Number Change, Repeatable for Credit Change

Department of Economics

• University Studies Request

Department of Management and Human Resources

• New Course
• Title Change, Credit Hour Change
• Title Change
• Service Learning Request

Department of Biological and Irrigation Engineering

• New Course

Department of Civil and Environmental Engineering

• New Course
• Title Change

Department of History

• New Course
• New Course, University Studies Designation

Department of Languages, Philosophy, and Speech Communication

• Credit Hour Change

Department of Sociology, Social Work and Anthropology

• New Course
• Add Multiple List, Dual List Change, …

Optimización Para El Normado, Planeamiento, Diseño Y Manejo Del Agua Subterránea, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

Los modelos de Simulación/optimización (S/O) junta modelos de simulación y optimización para calcular estrategias óptimas para el manejo del agua subterránea ante problemas de optimización propuestos. Una estrategia es un conjunto de caudales de extracción e inyección de agua subterráneas distribuidas espacial y temporalmente. Los modelos S/O están llegando a ser más comúnmente usados para el desarrollo de normas, planeamiento, diseño del sistema y manejo. Por ejemplo, los encargados del manejo y planificación del agua algunas veces deben decidir como controlar el uso del agua subterránea para originar un futuro favorable y evitar serios problemas. Los modelos S/O pueden ayudar …

Curriculum Subcommittee Minutes, October 7, 2004, Utah State University

Educational Policies Committee

Department of Animal, Dairy and Veterinary Sciences

• New Course
• Credit Hour Change

Department of Business Information Systems

• Service Learning Request

Department of Communicative Disorders and Deaf Education

• Service Learning Request

Department of Psychology

• Service Learning Request

Department of Special Education and Rehabilitation

• Title Change, Credit Hour Change, Course Description Change

Department of Biological and Irrigation Engineering

• New Course
• Credit Hour Change
• Prerequisite Change

Department of Civil and Environmental Engineering

• Prerequisite Change
• Title Change, Add Multiple List

Department of Electrical and Computer Engineering

• Prerequisite Change

Department of Mechanical and Aerospace Engineering

• New Course
• Prerequisite Change
• Title Change, Course Description Change

Department …

Faculty Senate Agenda, October 4, 2004, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• EPC Curriculum Deadline - December 16
• Faculty Involvement in Evaluating Journal Subscriptions - Subject Librarians
• Syllabus Resources Proposal for Domestic Partner Benefits
• December Commencement
• ASUSU Update
• Library Advisory Council
• Honors Program
• Faculty Evaluation Committee Report
• Athletic Council
• Calendar Committee

Faculty Senate Executive Committee Agenda, September 20, 2004, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• EPC Business
• Faculty Evaluation Committee
• Libraries Advisory Council
• Honors Program
• ASUSU
• Calendar Committee
• Domestic Partner Benefit
• Athletic Council
• Resolution of collaboration with ASUSU
• 2005-2006 Budget Presentation

Faculty Senate Meeting Agenda, September 7, 2004, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• Interim Dean, School of Graduate Studies
• Enrollment and Curriculum Management
• EPC Business
• EPC Annual Report
• Graduate Council Report
• Approval of Parliamentarian
• December Commencement Ceremony
• Faculty Forum, November 1

Restoration Of Aspen Woodland Invaded By Western Juniper: Applications Of Partial Cutting And Prescribed Fire, Jonathon D. Bates, Richard F. Miller

Aspen Bibliography

Western juniper (Juniperus occidentalis spp. occidentalis) woodlands are rapidly replacing quaking aspen (Populus tremuloides) stands throughout the northern Great Basin. Aspen stands provide important habitat for many wildlife species and contain a high diversity of understory shrubs and herbaceous species. We studies two juniper removal treatments to restore aspen woodlands in Kiger Canyon on Steens Mountain, Oregon.

The Geo Quick Ride (Gqr) Program – Providing Inexpensive And Frequent Access To Space , Robert Caffrey, John Baniszewski

Small Satellite Conference

This paper examines the feasibility of piggybacking NASA, university, and industry payloads on commercial geosynchronous satellites. In 1998, NASA’s RSDO Office awarded Geo Quick Ride (GQR) study contracts to spacecraft manufacturers to examine the issues concerning the flying of secondary payloads. The study results were very promising. Commercial communications satellites have frequent flights and significant unused resources that could be used to fly secondary payloads. However, manifesting secondary payloads on a commercial revenue generating satellite is a complex problem to solve. The solution requires multiple simultaneous approaches in order to be successful. There are business, economic, technical, schedule, and organizational …

Neural Network Based Orbit Propagation For Small Satellite Missions, Liu Fang, N. Nagarajan

Small Satellite Conference

The Global Positioning System (GPS) receivers are being widely utilized for low earth navigation in space. These receivers provide the orbital information in real time while the attitude sensors provide real time attitude data. For full autonomy of a satellite, any failures which may occur due to different sources, such as GPS receiver, attitude sensors are to be detected autonomously and suitable remedial actions need to be taken to continue the satellite operations. Towards achieving autonomy, GPS receivers are widely used onboard the satellite for orbit information. In case of a failure or outages of the GPS receiver data, an …

Platform For Attitude Control Experiment (Pace): An Experimental Three-Axis Stabilized Cubesat, Jung-Kuo Tu, Shi-Hua Wu, Chen-Chi Chu

Small Satellite Conference

Owing to their low cost, fast development time, and multi-discipline educational purpose, CubeSats have been widely advocated by universities in recent years. However, few have employed three-axis stabilization schemes due mainly to the limitation of power and mass. The PACE, Platform for Attitude Control Experiment for short, is a three-axis stabilizing CubeSat developed at the National Cheng Kung University. It is a 20x10x10 cm3 double cube satellite weight less than 2-kg. A miniature momentum wheel is employed to achieve stability alone the pitch (orbit normal) axis. Magnetic coils are used to generate control torques to stabilize roll and yaw axes. …

Evaluating The Present And Potential Future Impact Of Small Satellites, Andrew Lewin

Small Satellite Conference

The theme of the 18th Annual AIAA/USU Conference on Small Satellites questions whether small satellites are a complimentary or a disruptive technology. This paper addresses this question by performing an analysis of the role small satellites play in the space market. The market is segmented into three primary components, military space, civil space, and commercial space. Analysis focuses on the U.S. space market. The analysis shows that while small satellites perform some valuable missions, they represent only a small part of the overall space market. Furthermore, although there are some upcoming opportunities for small satellites, they do not appear to …

Space Test Program-1 (Stp-1)--First Of Its Kind!, Major Raymond Galik

Small Satellite Conference

The Space Test Program's inaugural, "self-named" mission, STP-1, is a "first of its kind" program launching seven distinctly different satellites containing 11 separate Satellite Experiment Review Board (SERB) experiments to two different orbits. There are several "firsts" for the DoD Space Test program on this mission including: First EELV, First Integrating Contractor, First launch of the EEL V Secondary Payload Adapter (ESPA), First dual orbit mission, and many others. All of these items are being accomplished in order to pave the way for future multiple "ESP A-class" satellite missions. The key with this mission is to set the stage for …

Keynote Address, Dr. Tony Tether

Small Satellite Conference

No abstract provided.

Insights, Summer, 2004, Utah State University

Discovery Magazine

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

Conservation Assessment Of Greater Sage-Grouse And Sagebrush Habitats, J. W. Connelly, S. T. Knick, M. A. Schroeder, S. J. Stiver, Western Association Of Fish And Wildlife Agencies

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

No abstract provided.

Analysis Of Phytoplankton Nutrient Limitation In Farmington Bay And The Great Salt Lake, Wayne A. Wurtsbaugh, Amy M. Marcarelli

Watershed Sciences Faculty Publications

The Great Salt Lake is bordered to the south and east by a growing metropolitan area that contributes high nutrients to Farmington Bay. This large bay is eutrophic, and there is concern that continued increases in effluents from the Salt Lake City area could extend to impact the much larger, and currently less productive, Gilbert Bay. This study focused on determining how nutrient supplies might limit, and therefore control, algal populations in Farmington Bay and Gilbert Bay at different salinities. We tested both short and long-term responses of algal growth using laboratory nutrient addition bioassays in the summer and fall …

An Infrared Approach To Thin-Layer Based Biosensors, Ignacio J. Garcia, Nicole Branan, Rola Altoos, Todd A. Wells

Utah Space Grant Consortium

Biosensors exploit the theoretical and instrumental approaches of analytical chemistry and the unique properties of biological molecules. They utilize the intermolecular interactions and specificity found in systems such as hormone-receptor, antigenantibody, pathogen-host and substrate-enzyme. Manipulation of the structural and energetic factors that guide formation of these macromolecular complexes may provide a rational basis for the development of new sensor technology. To this end we have investigated myoglobin thin films for their ability to bind ligands. FTIR spectroscopy has been chosen as the transduction methods and has been shown to discriminate between several analytes.

Model Adjustments For Individual Patients Using Rocuronium, Rose Mills

Utah Space Grant Consortium

Neuromuscular blocking agents are used in the operating room to allow safe intubation and prevent dangerous movement during surgery. Six patients scheduled for laparoscopic surgery were monitored throughout the operation. We then adjusted the pharmacodynamic model parameters to better fit individual patient responses. Adjusting the models as the patient began to recover provided significantly better prediction of recovery from rocuronium when adjusted at a train-of-four ratio of 0.3. When these predictions are displayed to an anesthesiologist, or an astronaut who may be less trained in anesthesia, they may help in determining if another bolus of rocuronium or a reversal agent …

Improved Hexahedral Meshing On Biological Models, Sara Richards, Steven Benzley, Jason Sheperd, Mike Stephenson

Utah Space Grant Consortium

Certain applications of the finite element method require hexahedral meshes for the underlying discretization. A procedure, known as THexing, which is guaranteed to produce an all-hex mesh is to begin with a tetrahedral mesh and then subdivide each element into four hexahedra. This research presents a method for improving the THex approach, known as Diced THexing, or DTHexing. The DTHex approach is based on general coarsening tools. An initial triangle surface mesh is coarsened and smoothed iteratively until a coarse mesh of reasonable quality is obtained. The volume is then easily meshed using a tetrahedral scheme, then refined using ’h’ …

Antimicrobial Activities Of Lipodepsipeptide Syringopeptins, Mekki F. Bensaci

Biology

Many strains of the plant bacterium Pseudomonas syringae produce two major classes of cyclic lipodepsipeptides, the syringomycins and the syringopeptins. Four groups of small cyclic lipodepsipeptides are well known: the syringomycins, syringostatins, syringotoxins, and pseudomycins. They all have antimicrobial activities and tend to be more active against yeasts than against bacteria. The syringopeptins are lesser-known. The best-studied syringopeptins are SP22 and SP25. They possess antibacterial and antifungal activities, but their mechanisms of action and antimicrobial spectra are less studied. Saccharomyces cerevisiae sphingolipid and sterol biosynthetic mutants were used to investigate the mechanism of action of syringopeptins against fungi. Similarly to …

An Invasive Species Assessment Protocol: Evaluating Non-Native Plants For Their Impact On Biodiversity, Version 1, Larry E. Morse, John M. Randall, Nancy Benton, Ron Hiebert, Stephanie Lu, Natureserve

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

NatureServe, in cooperation with The Nature Conservancy and the U.S. National Park Service, developed this Invasive Species Assessment Protocol as a tool for assessing, categorizing, and listing non-native invasive vascular plants according to their impact on native species and natural biodiversity in a large geographical area such as a nation, state, province, or ecological region. This protocol is designed to make the process of assessing and listing invasive plants objective and systematic, and to incorporate scientific documentation of the information used to determine each species’ rank. NatureServe’s methodology has previously included assessments of the conservation significance of native species; this …

Utah State University Commencement, 2004 – Main Campus, Utah State University

Commencement Programs

111th Annual Commencement of Utah State University

Investigation Into The Spatial And Temporal Dynamics Of Stomatal Networks To Determine Whether Plants Perform Emergent, Distributed Computation, Jevin West

Biology

This research studies the spatial and temporal dynamics of stomatal patchiness in order to investigate the possibility that plants solve their problem of adjusting stomatal aperture in order to maximize CO₂ uptake while minimizing H₂O loss through an emergent, distributed computation. An extensive study is done on qualitative and quantitative characteristics of stomatal patchiness, and improved imaging techniques are developed to more fully capture the dynamics. In doing so, soliton-like structures were discovered. Sequences of chlorophyll fluorescence images of Xanthium strumarium leaves were then compared to image sequences of cellular computer simulations that solve problems via emergent, …