Digital Commons Network^™

Scanning Electron Microscopic Studies On Microvascular Architecture Of Human Coronary Vessels By Corrosion Casts: Normal And Focal Necrosis, T. Ono, Y. Shimohara, K. Okada, S. Irino

Scanning Electron Microscopy

Microvascular architecture of the normal human heart and myocardial focal necrosis were studied by scanning electron microscopy of corrosion casts. Casts macroscopically identical in form to the left ventricular posterior wall were prepared.

The following results were obtained in the normal human heart. (I) Most of the arterioles communicated with capillary plexuses smoothly and straight forwardly in the left ventricular posterior free wall. (2) Arterioles which branched from the arteries ran in various directions and continued into capillaries either at right angles or obliquely in the trabeculae carneae. (3) capillaries running parallel with the cardiac muscle fibers ran in different …

Physical Basis For Spectrometer Calibration, M. Gautier, J. P. Duraud, J. P. Vigouroux, C. Le Gressus

Scanning Electron Microscopy

Progress in quantitative surface analysis is hampered by the lack of experimental procedure including spectrometer calibration, sample preparation, and general experimental setting-up. Two methods for spectrometer alignment are compared: the linearization method and the elastic peak test. Experimental spectra are presented, which can be considered as stringent reference data to check the instrument response and the analyser transmission at low energies.

Utah Science Vol. 47 No. 1, Spring 1986

Utah Science

2 ANNUAL FLOWERS W. A. Varga Looking for ways to add color and interest to the landscape? A USU horticulturist reviews the attributes of some annual flowers.

6 UNDERSTANDING PLANT-MICROBE COMMUNICATION Anne Anderson Eavesdropping on the "conversations" between plants and microbes may help researchers genetically engineer plants more resistant to pathogens and that can better utilize beneficial microorganisms.

9 WHOLE MILK OR MILK REPLACERS: A NUTRITIONAL AND ECONOMIC COMPARISON S. L. Maxfield. J. L. Walters, R. D. White, and S. D. Allen Even though prices for whole milk have declined in recent months, it still isn't economical to substitute marketable …

Deconvolution In Auger Electron Spectroscopy, B. Chornik, H. E. Bishop, A. Le Moel, C. Le Gressus

Scanning Electron Microscopy

Deconvolution calculations have been applied in Auger Electron Spectroscopy to increase resolution and/or to eliminate loss features. We present: i) A short review of the methodology; ii) Recent results obtained in our laboratory in spectroscopy of Al, Ni, Cu, Ag and Te; iii) A discussion on the conditions for the appearance of artefacts originating either in the calculation or the physical processes (emission anisotropy, distribution of electron path lengths, and intrinsic losses).

Folk Art And Art Worlds, John Michael Vlach, Simon J. Bronner

All USU Press Publications

Respected voices combine in this volume to address the fundamental issues pertaining to American folk art. The eleven original essays explore the changing face of folk art in its different contexts or folk art "worlds"--the worlds of the creator, the academic, the art dealer, the gallery or museum, and the community. A new Introduction considers supplemental works on American Folk Art that have appeared since the volume was first published.

Homelessness In Utah: Utah Homeless Survey: Final Report, Task Force For Appropriate Treatment Of The Homeless Mentally Ill: Salt Lake City

Elusive Documents

No abstract provided.

Variation In Individual Growth Rates And Population Abundances Of Ephemerellid Mayflies, Charles P. Hawkins

Watershed Sciences Faculty Publications

Individual growth and densities of six taxa of ephemerellid mayflies were examined in relation to differences in temperature and food among streams of western North America. For most taxa, growth rate was not a simple function of either temperature or food. Growth periods of taxa differed relative to seasonal changes in temperature. As a result of the interaction between size and temperature, growth rates and shapes of the growth curve varied among taxa. The significance of temperature for life history phenomena therefore cannot be easily generalized to explain phenological patterns among stream insects. Also, little evidence was found that implicated …

Food Microstructure

Food Structure

No abstract provided.

Theoretical Study Of The Electron Temperature In The High-Latitude Ionosphere For Solar Maximum And Winter Conditions, Robert W. Schunk, Jan Josef Sojka, M. D. Bowline

All Physics Faculty Publications

The electron temperature (T_e) variation in the high-latitude ionosphere at altitudes between 120 and 800 km has been modeled for solar maximum, winter solstice, and strong magnetic activity conditions. The calculated electron temperatures are consistent with the plasma densities and ion temperatures computed from a time-dependent ionospheric model. Heating rates for both solar EUV and auroral precipitation were included. In general, the predicted UT variation of the electron temperature that results from the displacement between the magnetic and geographic poles is only a few hundred degrees. However, in sunlit trough regions, T_e hot spots develop, and …

Food Microstructure

Food Structure

No abstract provided.

Seventh Biennial Cheese Industry Conference, Various Authors

Cheese Industry Conference

No abstract provided.

Chronology, Ogden Air Logistics Center, Hill Air Force Base, Utah, 1976-1985, United States Department Of Defense, Air Force Department

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

Chronologies have a very special place in written history--they present a sequential record or chronicle of events, without attempting to interpret their significance. They are an important reference tool for historians providing the correlation and give meaning to the events that have taken place in any given period of history. This is the seventh in a series of Chronologies pertaining to major events concerning the Ogden Air Logistics Center and its predecessors. A convenience summary for interested readers and researchers, it was extracted to some degree from the annual official Ogden ALC Histories which are classified. This unclassified publication will …

The Guy Smith Interviews: Rationale For Concepts In Soil Taxonomy, U.S. Soil Conservation Service

Natural Resources-Planning, Management, and Conservation

Interviews with Guy D. Smith, former director of the Soil Survey Investigations Division of the Soil Conservation Service and distinguished international soil scientist.

Modeling Moisture Content Of Fine Dead Wildland Fuels: Input To The Behave Fire Prediction System, United States Department Of Agriculture, Forest Service

Wildfires

A method for predicting the time-dependent nature of fine fuel moisture is badly needed to support fire behavior prediction systems used in fire management. Of the models available, none met all the requirements of the BEHAVE fire behavior prediction system. The Canadian Fire Fuel Moisture Code (FFMC) came closest to meeting our needs and was selected as a base model. Improvements to the FFMC were concentrated on providing a means of accounting for annual and diurnal variation due to solar heating of woody fuels. This was necessary because the FFMC was developed for fuels located within forest stands, a generally …

Utah Science Vol. 47 No. 4, Winter 1986

Utah Science

110 REAL-TIME ULTRASOUND: A NEW WAY TO STUDY THE EFFECTS OF POISONOUS PLANTS T. D. Bunch, K. E. Panter and L. F. James Ultrasound is used to monitor normal fetal growth and learn how poisonous plants affect fetal development

114 IMPROVING SYMBIOTIC NITROGEN FIXATION K. A. Lawson, D. A. Johnson and M. D. Rumbaugh Plant and bacterial combinations from Pakistan and Spain may improve the nitrogen-fixing capacity of alfalfa on western rangelands.

120 INSULIN-DEPENDENT DIABETES MELLITUS: A STUDY OF NUTRIENT INTAKE B. M. Prater The food intake of persons with insulin-dependent diabetes appears to meet the RDAs for nutrients.

124 …

Seed Rain Patterns During Early Recovery On A Strip-Mined Site In Southwestern Wyoming, Hal W. Gordon

Undergraduate Honors Capstone Projects

Revegetating surface-mined soils of the western United States is a major problem facing natural resource managers today. The Surface Mine Reclamation and Conservation Act (SMRCA, Public Law 95-87) requires that the opera tor: "… establish on the regraded areas, and all other lands affected, a diverse, effective and permanent vegetative cover of the same seasonal variety native to the area of land to be affected and capable of self-regeneration and plant succession at least equal in extent of cover to the natural vegetation of the area ... "

Historically, most of the coal produced in the U.S. came from the …

Electron Dense Granules In Yoghurt: Characterization By X-Ray Microanalysis, Estelle M. Parnell-Clunies, Yukio Kakuda, Richard Humphrey

Food Structure

A study was undertaken to investigate the influence of buffer composition, pH and glutaraldehyde fixation time on the appearance of electron dense granules in yoghurt. Yoghurt particles were fixed in 3.5% glutaraldehyde and postfixed in 2% osmium tetroxide in verona! acetate or phosphate buffer. Thin sections were examined unstained with an electron microscope equipped with a scanning transmission electron microscope module and energy dispersive X- ray analyser.

Electron dense granules appeared whenever glutaraldehyde and osmium tetroxide were utilized sequentially, irrespective of the type of buffer, pH (5.0 vs 6.75), or glutaraldehyde fixation time (2 or 24 h). Granules were absent …

Catastrophic Damage From Dam Break Floods, L. Douglas Jemes, Al-Hassan Sumani, Melanie L. Bengston

Reports

No abstract provided.

The Condor Equatorial Spread F Campaign: Overview And Results Of The Large-Scale Measurements, M. C. Kelley, I. Labelle, E. Kudeki, B. G. Fejer, Sa. Basu, Su Basu, K. D. Baker, C. Hanuise, P. Argo, R. F. Woodman, W. E. Swartz, D. T. Farley, J. W. Meriwether Jr.

Space Dynamics Laboratory Publications

During the Condor campaigna number of instrumentsw ere set up in Peru to supportt he rocket experimentsI.n this serieso f papersw e report on the resultso f the experimentsd esignedt o study the equatorial F region. In this overview paper we summarize the main results as well as report upon the macroscopicd evelopmentos f spreadF as evidencedb y data from backscatter ada•s,f rom scintillation observationsa,n d from digital ionosondem eaurementsIn. this latter regard,w e argueh ere that at least two factorso ther than the classicagl ravitationalR ayleigh-Taylorp lasmai nstabilityp rocessm ust operate to yield the longest-scalheo rizontalo rganizationo f spreadF …

Utah Water Research Laboratory, Utah Center For Water Resources Research, A Program Overview, L. Douglas James, Donna H. Falkenborg

Reports

Organization of Prepared Material: This overview presents the water resources research program administered through the Utah Water Research Laboratory and the Utah Center for Water Resources Reserach. The document is prepared for an internal review by a faculty team organized by the Administration of Utah State university and an external review by a team organized by the U.S. Geological Survey as part of a national effort to evaluate the water research centers in every state over a 2-year period. These materials are prepared to stimulate discussion and spark innocative ideas for building an even stronger program. The UWRL/UCWRR administration sees …

Expected Effects Of In-Lake Dikes On Water Levels And Quality In The Farmington Bay And The East Shore Areas Of The Great Salt Lake, Utah, Duane G. Chadwick, J. Paul Riley, Alberta J. Seierstad, Darwin L. Sorensen, Norman E. Stauffer

Reports

Introduction: The Great Salt Lake is a terminal lake and as such is one of the major inland bodies of salt water in the world, and the largest lake of brine in the western hemisphere. Its unique features, including its mineral rich waters and interesting shores and islands, make it appealing to both industry and vacationers. Until recently, some of the great waterfowl sanctuaries in the U.S. existed along the easterly and northerly shores of the lake. However, during the past three years record breaking inflow volumes and lower than normal evaporation rates have caused an unprecidented rate of rise …

Expected Effects Of In-Lake Dikes On Water Levels And Quality In The Farmington Bay And The East Shore Areas Of The Great Salt Lake, Utah (Executive Summary), Duane G. Chadwick, J. Paul Riley, Alberta J. Seierstad, Darwin L. Sorensen, Norman E. Stauffer

Reports

Introduction: The Great Salt Lake is a terminal lake and as such is one of the major inland bodies of salt water in the world, and the largest lake of brine in the western hemisphere. Its unique features, including its mineral rich waters and interesting shores and islands, make it appealing to both industry and vacationers. Until recently, some of the great waterfowl sanctuaries in the U.S. existed along the easterly and northerly shores of the lake. However, during the past three years record breaking inflow volumes and lower than normal evaporation rates have caused an unprecidented rate of rise …

Features Of Food Microscopy, D. F. Lewis

Food Structure

The value of food microscopy is judged by its practical application to food handling. Hence microscopists must explain the relevance of their findings to food technologists. The food microscopist has to deal with materials that are particularly difficult to prepare for microscopy because they often contain high levels of fat, air, sugar, salt, starch or acid. Sometimes the methods used are unorthodox and could be regarded as questionable by microscopists in more traditional disciplines. This paper considers the relationship between food microscopists, food technologists and other microscopists. An approach to interpretation of images is based on the following features. 1) …

General Catalog 1986-1988, Utah State University

University Catalogs

General Catalog of 1986-1988

Contains course descriptions, University college calendar, and college administration.

The Role Of Plant Hormones In Grass Tiller Development, Marit Snow

Undergraduate Honors Capstone Projects

Two bunchgrass species commonly found in the Intermountain West, Agropyron spicatum and A. desertorum, are morphologically similar but respond to defoliation very differently. A. desertorum produces more daughter tillers and is more hardy than A. spicatum. Hormones were applied to experimental plants to observe changes in tillering rates, growth rates, and response of plants to the stress of exogenous hormone application. Gibberellic acid treatments were related to increased tiller height in both species, but also a decrease in daughter tiller production in A. desertorum and an increase in senescence in A. spicatum. Kinetin increased senescence in A. desertorum. Auxin showed …

Potential Arkansas And White Rivers Water Available For Diversion To The Grand Prairie, W. Douglass Dixon, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

At the present time. the rate of groundwater use in the Grand Prairie region of Arkansas exceeds natural replenishment of the underlying aquifer. Most of the groundwater is used for agricultural production. [f current agricultural water needs of the region are to be satisfied under sustained yield conditions. supplemental surface water will be required. The objective of this study is to assess the viability of the Arkansas and White Rivers as sources of supplemental water for meeting water needs in excess of those which can be met with groundwater.

Automatic Ordering Of Program Units For Execution, Ronald D. Williams

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

A program written in today's sequential programming languages must be written according to a rule which states that source instructions must be written in their exact order of execution. A better rule would be to let the programmer write the instructions in any order he wants- - then let a program figure out the proper order of execution. Such a system applies not only to individual instructions in a procedure or program, but to procedures in a program and to programs in a job stream.

This paper and its associated automatic ordering program introduce a method by which instructions can …

Long Term Effects Of Radiation And Combined Modalities On Mouse Lung, David P. Penney, Paul Van Houtte, Dietmar W. Siemann, Wayne A. Rosenkrans Jr., Philip Rubin, Robert A. Cooper Jr.

Scanning Electron Microscopy

The lung appears to be the major dose-limiting organ in radiation of the thorax. Early responses (<1 week) involve the type II pneumocyte and increased surfactant biosynthesis and secretion. Later changes, which appear to be related to the surfactant response, lead to classical radiation pneumonitis, which is often fatal. Animals which survive radiation pneumonitis develop progressive fibrosis, a late-appearing response, which reduces compliance and available air space, and is usually fatal. This study centers on the fine structural changes in the lungs of LAF₁ mice, 63 weeks following various radiation exposures (5-13 Gy). Doses which are subthreshold in evoking surfactant and pneumonitic responses precipitate fibrosis and atelectasis by 63 weeks, and involve type II pneumocyte sloughing and degeneration. Of the two major deterrents to lung irradiation (pneumonitis and fibrosis), these results suggest that fibrosis always follows pneumonitis, but pneumonitis is not a necessary preliminary step to fibrosis. Bleomycin elicits several morphological alterations characteristic of radiation, and, when combined with the latter, appears to exacerbate radiation effects.

Interactive Modification Of Quadratic Multiobjective Water Resources Planning Strategies, Paul J. Killian, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

An interactive method is presented for modifying a mtltiobjective water resources planning strategy by changing constraining conditions on regional objectives and local variables. The method is illustrated by modifying a conjunctive use. sustained groundwater withdrawal strategy for minimizing the cost of meeting regional water demand on the Arkansas Grand Prairie. The strategy was developed using a model in which the finite difference form of the two-dimensional groundwater flow equation is embedded in an optimization process. The quadratic optimization is accomplished by utilizing the General Differential Algorithm to obtain values of drawdown. pumping. and recharge in each finite difference cell. Results …

Deer Damage And Damage Control In Ohio's Nurseries, Orchards, And Christmas Tree Plantings: The Grower's View, Joel D. Scott, Thomas W. Townsend

Wildlife Damage Management Conference

A survey of white-tailed deer (Odocoileus virginianus) damage was conducted among growers (N = 2,236) of fruit, Christmas tree and nursery crops in Ohio; over 81% responded. Damage was reported by 43.1% of Christmas tree growers, 41.3% of orchardists and 32.5% of nurserymen. Most commonly reported by orchardists as damaged were apples (Malus spp.), by Christmas tree growers were white pines (Pinus strobus), and by nurserymen were maples (Acer spp.). Young plants (x̄ = 7.5 years) were more commonly damaged than older plants of all species. Seasonal damage was most common in …