Digital Commons Network^™

1995 Annual Report, Various Authors

Annual Reports

No abstract provided.

Biofilm Mediated Calculus Formation In The Urinary Tract, Robert J. C. Mclean, David J. Stickler, J. Curtis Nickel

Cells and Materials

Mineralization and subsequent calculus formation is a common complication of biofilm infections. In the urinary tract, these infected calculi often arise from infections by urease-producing bacteria. Ammonia, liberated by bacterial urease activity, increases urine pH, resulting in the precipitation of Ca and Mg as carbonateapatite {Ca₁₀(PO₄,CO₃)₆(OH,CO₃)₂} and struvite (NH₄MgP0₄·6H₂O). These minerals become entrapped in the organic matrix which surrounds the infecting organisms and ultimately grow into mature calculi. When the causative organisms grow on urinary catheters and stents, the resulting mineralization can …

In Vitro Degradation Of Poly (Dl-Lactide-Ε-Caprolactone) Nerve Guides, M. F. Meek, W. F. A. Dunnen, I. Stokroos, A. J. Pennings, P. H. Robinson, J. M. Schakenraad

Cells and Materials

The aim of this study was to evaluate the in vitro degradation of a poly (DL-lactide-ε-caprolactone) nerve guide with an initial molecular weight (M_w) of 1.1 x 10⁶ kg/kmol in phosphate buffer (pH = 7.4), after different time intervals, ranging from 7-98 days. We evaluated the changes in M_w, dry and wet volume, dry and wet mass and pH of the buffer. In addition, cryo scanning electron microscopical (cryo SEM) evaluation of the degrading nerve guides was carried out to evaluate the effect of the degradation on the surface of the nerve guide.

The degradation …

Perturbations Of Periosteel Bone During Healing: Effect Of Non-Weight Bearing, Helen E. Gruber, Mary E. Kirchen, John R. Sweeney, William E. Anderson, G. June Marshall

Cells and Materials

Weight bearing (WB) is an important factor influencing bone remodelling. The present study evaluates the effects of weight bearing and non-weight bearing (S) (achieved by tail suspension and hindlimb elevation) on the healing of a fibular osteotomy in adult male rats. After 9, 18 or 36 days under WB or S conditions, periosteum near the callus formed at the osteotomy site was compared to periosteum of the contralateral fibula (which did not receive an osteotomy) or to periosteum of fibula of control animals which did not receive an osteotomy. Data show that periosteal bone healing is sensitive to alterations in …

A Composite Biomaterial: Poly 2 (Hydropoxyethyl) Methacrylate / Alkaline Phosphatase Initiates Mineralization In Vitro, R. Filmon, D. Chappard, J. P. Monthéard, M. F. Baslé

Cells and Materials

Bone substitutes are nowadays largely used in orthopedic surgery but they lack osteoinductive properties. Poly (2-hydroxyethyl methacrylate) (pHEMA) has numerous biomedical applications. Alkaline phosphatase (AlkP), an ectoenzyme elaborated by osteoblasts, initiates bone mineralization by hydrolyzing organic phosphates before calcium-phosphorus deposition. We have immobilized AlkP in pHEMA in a copolymerization technic. Histochemical study revealed that AlkP has retained its biological activity . Image analysis of sections using a tessellation method showed a lognormal distribution of the area of tessels around AlkP particles thus confirming an homogeneous distribution of the enzyme in the polymer. Pellets of pHEMA and pHEMA + AlkP were …

Validation Of Energy Dispersive X-Ray Spectrometry As A Method To Standardize Backscattered Electron Images Of Bone, E. G. Vajda, R. D. Bloebaum, J. G. Skedros

Cells and Materials

The use of backscattered electron (BSE) imaging as a tool for the qualitative measurement of mineral content in bone has been well documented. The challenge still remains to develop BSE imaging as a tool for quantitative mineral content analysis in bone. The limiting factor has been the ability to standardize the BSE signal within and between laboratories. Energy dispersive x-ray spectrometry (EDX) has been proposed as a method to standardize the BSE operating environment. The goal of this study is to investigate the relationship between EDX-determined wt.% Ca measurements and BSE graylevels. A comparison with traditional ash content measurements will …

The Effect Of Vitronectin And Other Extracellular Matrix Molecules On Endothelial Expansion And Plasminogen Activation, P. Anne Underwood, Penny A. Bean

Cells and Materials

Endothelial recovery following procedures used to alleviate blood vessel occlusion is modulated by the local extracellular matrix upon which it has to migrate and proliferate. This extracellular material is derived from vessel wall cells, and plasma proteins which bind to the exposed surfaces. We have demonstrated that vitronectin adsorbs efficiently to tissue culture polystyrene in competition with other plasma proteins, which suggests that it may adsorb to biomaterial surfaces in vivo. We have compared the adhesion, migration and proliferation of human umbilical artery endothelial cells on surface-coated vitronectin, with other extracellular matrix molecules encountered in this environment, namely fibronectin, …

Douglas-Fir Beetle, Richard F. Schmitz, Kenneth E. Gibson

The Bark Beetles, Fuels, and Fire Bibliography

The Douglas-fir beetle (Dendroctonus pseudotsuqae Hopk.) infests and kills Douglas-fir throughout most of its range in western United States British Columbia and Mexico. Occasionally western larch trees are infested when growing among Douglas-fir under attack. Attacks in standing larch are always unsuccessful, while those in freshly felled larch are usually successful and brood emergence is equivalent to that in Douglas-fir. Douglas-fir beetles normally kill small groups of trees, but during outbreaks 100 tree groups are not uncommon (fig. 1). Losses can be devastating during periodic outbreaks, such as four that occurred in western Oregon and Washington from 1950 through 1969, …

Fire-Bgc -- A Mechanistic Ecological Process Model For Simulating Fire Succession On Coniferous Forest Landscapes Of The Northern Rocky Mountains, United States Department Of Agriculture, Forest Service

Forestry

An ecological process model of vegetation dynamics mechanistically simulates long-term stand dynamics on coniferous landscapes of the Northern Rocky Mountains. This model is used to investigate and evaluate cumulative effects of various fire regimes, including prescribed burning and fire exclusion, on the vegetation and fuel complex of a simulation landscape composed of many stands. Detailed documentation of the model FIRE-BGC (a FIRE BioGeoChemical succession model) with complete discussion of all model parameters is followed with results of an application of the FIRE-BGC to a whitebark pine landscape in the Bob Marshall Wilderness complex. Simulation results of several management scenarios are …

South Manti Timber Salvage Sales Environmental Assessment, United States Forest Service

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

This environmental assessment (EA) is intended to foster informed decision making and public participation on a site-specific proposal to implement activities designed to meet the purpose and need and goals and objectives of the Manti-La Sal National Forest Land and Resources Management Plan (Forest Plan). This EA discloses the direct, indirect, and cumulative environmental impacts of three action alternatives for timber harvest and road construction, and a no action alternative on portions of the Ferron/Price and Sanpete Ranger Districts, Manti-La Sal National Forest in Sanpete and Sevier Counties, Utah. The area to be analyzed in support of this decision includes …

Dutch Experience In Irrigation Water Management Modelling, B J. Van Den Broek

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

Modeling the soil-water-crop atmosphere system to improve agricultural water management in arid zones (SWATRE); Groundwater approach to drainage design in irrigated agriculture (SGMP); Computer Program for flume and weir design (FLUME 3.0); A hydrodynamic model in the design of operational controllers for water systems (MODIS/MATLAB); Decision support simulation model for water management at a regional and national scale (SIWARE); Management of water delivery systems (RIBASIM/OMIS); A water allocation, scheduling, and monitoring program (WASAM); and Irrigation agencies, farmers and computational decision support tools.

Bats, Veda Depaepe, Terry A. Messmer, Michael R. Conover

All Archived Publications

No abstract provided.

Characterization Of Ground And Excited Electronic State Deprotonation Energies Of Systems Containing Double Bonds Using Natural Bond Orbital Analysis, J. K. Badenhoop, Steve Scheiner

Chemistry and Biochemistry Faculty Publications

Natural bond orbital analysis is applied to the ground and excited states of a set of neutral, cationic, and anionic doubly bonded species H_nC=XH_n (X=C, N, O) isoelectronic with ethylene. The character of the excitation is correlated with calculated charge shifts and geometry changes upon relaxation. For these planar molecules, depopulation of the π bond or population of the π∗ antibond causes an out‐of‐plane twist or pyramidalization upon relaxation correlated to the amount of charge shift. These nonplanar distortions generally lower the energy more than changes in bond lengths and angles. Population of a σ_XH^{∗ …}

County, Colorado, Prowers County, Colorado Watershed Plan And Environmental Assessment, Bent Soil Conservation District, Natural Resources Conservation Service

Environmental Assessments (NV)

No abstract provided.

Fontenelle Natural Gas Infill Drilling Projects, Sweetwater And Lincoln Counties, Wyoming, Final Environmental Impact Statement, United States Department Of The Interior Bureau Of Land Management

Final Environmental Impact Statements (WY)

DALEN Resources Oil & Gas Co. (DALEN Operator) and Cabot Oil & Gas Corp., Presidio Oil Co., and several other companies (collectively the Lincoln Road Operators) propose to continue infill drilling their existing lease acreage (collectively approximately 179,760 acres) within the Fontenelle II and Lincoln Road development areas. The Fontenelle II and the Lincoln Road development areas are immediately adjacent to each other. Both proposed actions would be implemented in northeastern Lincoln and northwestern Sweetwater counties, Wyoming adjacent to and east of Fontenelle Reservoir and the Green River. The project areas are approximately 30 miles northeast of Kemmerer, Wyoming and …

Decision Record And Finding Of No Significant Impact For Sodium Leasing In The Green River Basin Of Southwestern Wyoming, United States Department Of The Interior Bureau Of Land Management

Record of Decisions (WY)

The BLM is charged with leasing federal mineral resources. BLM is proposing to hold a sodium lease sale of seven tracts incorporating a total of 9,893.91 acres as shown on Map 1. Federal sodium leases are issued based upon a system of closed competitive bids. The highest bidder may receive the lease provided the bid meets or exceeds fair market value. Leases have a 20-year primary term with discretionary 10-year renewal periods thereafter. A federal sodium lease is not automatically renewed but may be renewed upon the lessee's timely request for renewal. All leases adjudicated for renewal are reviewed and …

Express Crude Oil Pipeline Record Of Decision, United States Department Of The Interior Bureau Of Land Management

Record of Decisions (WY)

This document records the decision made by the Bureau of Land Management (BLM) for granting a right-of-way (ROW) across BLM-administered lands (public lands) to Express Pipeline, Inc. for the construction of a 24-inch crude oil pipeline from Wildhorse, Alberta, Canada to Casper, Wyoming.

Final Environmental Impact Statement, Grass Creek Planning Area Resource Management Plan, Volume 1 Of 2, United States Department Of The Interior Bureau Of Land Management

Final Environmental Impact Statements (WY)

This final environmental impact statement (EIS) describes the proposed Grass Creek Resource Management Plan (RMP) and its environmental consequences. This proposed plan is for the future management of public lands in a portion of the Bighorn Basin Resource Area of the Worland District of the Bureau of Land Management (BLM). The planning area comprises approximately 968,000 acres of BLM-administered public land surface and 1,171,000 acres of BLM-administered federal mineral estate. (BLM-administered public land surface is referred to as "public land" in this document.)

The Dynamic Effects Of U.S. Food Aid On Recipient Country Agriculture, Christopher B. Barrett, Sandeep Mohapatra, Donald L. Snyder

Economic Research Institute Study Papers

Although food aid may have important medium- to long-tenn effects, there is a glaring absence of empirical research on food aid dynamics. This paper applies structural vector autoregression and dynamic structural equations modeling methods to a panel of production, trade, and food aid data from eighteen countries over the period 1961-95. We find evidence of a J-curve effect of food aid on recipient country commercial food imports, but only modest effects on food production. The implication is that food aid primarily serves donor goals of export market development.

On Some Aspects Of The Management Of A Stochastically Developing Forest, Amitrajeet A. Batabyal

Economic Research Institute Study Papers

In this paper I focus on some important biological aspects of the forest management problem. I model a stochastically developing forest as a multidimensional, continuous-time Markov chain. Next, I pose three questions concerning the long-run characteristics of a stationary forest, the stochastic process followed by dying species, and the age of an arbitrary species in the forest. I then (a) characterize a stationary forest probabilistically, (b) describe the stochastic process governing the demise of species in this forest, and (c) provide a method for determining the age of an arbitrary species in the forest. Finally, I discuss the forest management …

Final Report To The Department Of Energy For Water Use, Productivity And Interactions Among Desert Plants, James R. Ehleringer

Elusive Documents

No abstract provided.

Pluralism, Science, Ethics, And The Intersecting Spheres Of Social Concerns And Environmentalism, Christopher B. Barrett, Raymond E. Grizzle

Economic Research Institute Study Papers

This paper builds on alternative perspectives offered by the environmental and sustainability traditions to advance a holistic yet practical conceptual model that explicitly integrates social and environmental concerns. Ours is a pluralistic approach founded on synthesis. Employing the economic concept of path dependence, we emphasize that there exist multiple paths society can follow in environmental ethics and policy, but that onc e one has been chosen, implicitly or explicitly, there may be little opportunity to reverse such choices. Hence, the importance of process to the pursuit of social and environmental objectives.

An Analysis Of Iodine Deficiency Disorder And Eradication Strategies In The High Atlas Mountains Of Morocco, Elizabeth Anne Oldham, Christopher B. Barrett, Sabah Benjelloun, Brahim Ahanou

Economic Research Institute Study Papers

The population of the Ounein Valley in the High Atlas Mountains in Morocco is at high risk of iodine deficiency. We investigated local children's iodine deficiency and goiterpattems as well as food consumption habits through a household survey. Median urinary iodine content and goiter analysis both reflect moderate iodine deficiency. Total fish consumption has a statistically significant, positive effect on urinary iodine content. Fish consumption, like that of salt, is closely related to market access. Respondents are uniformly unaware of the dietary etiology of goiter. An effective strategy to reduce the high incidence of iodine deficiency disorder among children in …

Environmental Assessment For 36 Livestock Grazing Allotments On The Shoshone National Forest, United States Forest Service

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

The Shoshone National Forest proposes to issue Term Grazing Permits that will authorize the grazing of livestock on 36 grazing allotments located within the Forest. Permits will be issued for a period of up to 10 years. Part 3 (Special Terms and Conditions) of each permit would contain site specific livestock and rangeland management requirements designed to mitigate existing resource conflicts and implement Forest Plan standards and guidelines specific to each allotment.

Environmental Assessment Mammoth-Duck Creek Recovery Project, United States Forest Service

Environmental Assessments (UT)

This Environmental Assessment (EA) documents the analysis of a Proposed Action and the No Action alternative for the Mammoth-Duck Creek Recovery Project. The Proposed Action is designed to meet the following Purpose and Need within urban interface areas, Forest campgrounds and along designated Forest roads (Focus Areas): restore forest health by reducing bark beetle populations and protecting and retaining scenic vegetation; eliminate safety hazards by reducing fuels buildup and fire danger; manage habitats to maintain viable populations of existing native or desired non-native vertebrate species; and recover the volume and value of trees killed by bark beetles. The EA discusses …

Final Environmental Impact Statement, Grass Creek Planning Area Resource Management Plan, Volume 2 Of 2, United States Department Of The Interior Bureau Of Land Management

Final Environmental Impact Statements (WY)

The Bureau of Land Management is responsible for the balanced management of the public lands and resources and their various values so that they are considered in a combinatlon that will best serve the needs of the American people. Management is based upon the principles of multiple use and sustained yield: a combination of uses that take into account the long term needs of future generations for renewable and nonrenewable resources. These resources include recreation, range, timber, minerals, watershed, fish and wildlife, wilderness and natural, scenic, scientific and cultural values.

Green River Resource Area Resource Management Plan And Final Environmental Impact Statement Volume 2 Of 2, United States Department Of The Interior Bureau Of Land Management

Resource Management Plans (WY)

The Bureau of Land Management is responsible for the balanced management of the public lands and resources and their various values so that they are considered in a combination that will best serve the needs of the American people. Management is based upon the principles of multiple use and sustained yield; a combination of uses that take into account the long term needs of future generations for renewable and nonrenewable resources. These resources include recreation, range, timber, minerals, watershed, fish and wildlife, wilderness and natural, scenic, scientific and cultural values.

Journal Of Mormon History Vol. 22, No. 1, 1996

Journal of Mormon History

CONTENTS

ARTICLES

PRESIDENTIAL ADDRESS

• --The Emergence of Mormon Power since 1945 Mario S. De Pillis, 1

TANNER LECTURE

• --The Mormon Nation and the American Empire D. W. Meinig, 33

• --Labor and the Construction of the Logan Temple, 1877-84 Noel A. Carmack, 52

• --From Men to Boys: LDS Aaronic Priesthood Offices, 1829-1996 William G. Hartley, 80

• --Ernest L. Wilkinson and the Office of Church Commissioner of Education Gary James Bergera, 137

• --Fanny Alger Smith Custer: Mormonism's First Plural Wife? Todd Compton, 174

REVIEWS

--James B. Allen, Jessie L. Embry, Kahlile B. Mehr. Hearts Turned to the Fathers: A History of the …

Simulated Growth And Production Of Endangered Snake River Sockeye Salmon: Assessing Management Strategies For The Nursery Lakes, Chris Luecke, Wayne A. Wurtsbaugh, Phaedra E. Budy, H. P. Gross

Watershed Sciences Faculty Publications

We examined the potential of employing a series of lake management strategies to enhance production of endangered Snake River sockeye salmon (Oncorhynchus nerka) in its historical nursery lakes in central Idaho. We used a combination of limnological sampling, experimentation, and simulation modeling to assess effects of lake fertilization and kokanee reduction on growth and survival of juvenile sockeye salmon. Juvenile sockeye salmon from a broodstock of this endangered species are being introduced into the lakes from 1995 to 1998. Results of our analyses indicated that several lakes were suitable for receiving broodstock progeny. Field experimentation and simulation modeling indicated that …

Comparison Of The Aquatic Ecology Of Side-Canyons And The Main Channel Of Lake Powell, Wayne A. Wurtsbaugh, Kirsten L. Gallo

Watershed Sciences Faculty Publications

From 18-21 April 1996, students in a Utah State University class (Aquatic Ecology Laboratory; FW 560) measured limnological and fisheries characteristics in two side canyons (Halls Creek Bay and Moki Canyon) and the main channel of Lake Powell. Inclement weather precluded sampling of two other side canyons. Most of the sub-projects, directed by indiVIdual students, addressed the following two hypotheses: (1) productivity gradients existed from the inflows of the side canyons toward the main channel and; (2) productivity was higher in the side canyons than in the main channel of the lake. In most cases, parameters were measured at 3-5 …