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Wood Utilization In Aspen: Ecology And Management In The Western United States, E.M. Wengert, D.M. Donelly, D.C. Markstrom, H.E. Worth

Aspen Bibliography

In the past, markets for quaking aspen timber from the Rocky Mountains have been insufficient to support significant harvesting. This shortage of markets severely restrained the potential for aspen management. As a result, many stands protected from wildfire gradually reverted to conifers (see the VEGETATIVE REGENERATION and FIRE chapters).

Regeneration In Aspen: Ecology And Management In The Western United States, George A. Schier, Wayne D. Shepperd, John R. Jones

Aspen Bibliography

No abstract provided.

Using Glyphosate Herbicide In Converting Aspen To Conifers, Donald A. Perala

Aspen Bibliography

No abstract provided.

Forage In Aspen: Ecology And Management In The Western United States, Walter F. Mueggler

Aspen Bibliography

No abstract provided.

Ruffed Grouse Habitat Relationships In Aspen And Oak Forests Of Central Wisconsin Usa, J.F. Kubisiak

Aspen Bibliography

Ruffed grouse habitat requirements and management opportunities have been defined by Bump et al. (1947), Grange (1948), Dorney (1959), Gullion at al. (1962), Moulton (1968), and Gullion (1972), among others. It is generally agreed that interspersion of cover types and age classes is one of the keys to better grouse populations.

Intermediate Treatments In Aspen: Ecology And Management In The Western United States, J.R. Jones, W.D. Shepperd

Aspen Bibliography

No abstract provided.

Insects And Other Invertebrates In Aspen: Ecology And Management In The Western United States, J.R. Jones, N.V. Debyle, D.M. Bowers

Aspen Bibliography

No abstract provided.

Genetics And Variation In Aspen: Ecology And Management In The Western United States, J.R. Jones, N.V. Debyle

Aspen Bibliography

The broad genotypic variability in quaking aspen (Populus tremuloides Michx.), that results in equally broad phenotypic variability among clones is important to the ecology and management of this species. This chapter considers principles of aspen genetics and variation. variation in aspen over its range, and local variation among clones. For a more detailed review of the genetics of qualung aspen, especially with wider geographic application and with emphasis on tree breeding, see Einspahr and Winton (1976).

Diseases In Aspen: Ecology And Management In The Western United States, Thomas E. Hinds

Aspen Bibliography

Although many diseases attack aspen, relatively few kill or seriously injure living trees. The common leaf diseases, in general, are widely distributed throughout the range of aspen, whereas there are subtle differences in distribution between the important decay fungi, and apparently entirely different areas of distribution of major canker-causing organisms. However, there still are large gaps in knowledge of the disease organisms and their influence on natural and regenerated stands.

Wildlife In Aspen: Ecology And Management In The Western United States, Norbert V. Debyle

Aspen Bibliography

Aspen forests provide important habitat for many species of wildlife (Gullion 1977b), especially in the West (see the appendix to this chapter). In the coniferous forests of the interior West, aspen groves may be the only source of abundant forage; in the grasslands they may be the sole source of cover. A primary value of the aspen ecosystem in the West during the past century has been production of forage for both wildlife and domestic livestock (see the FORAGE chapter).

Management For Esthetics And Recreation, Forage, Water, And Wildlife, Norbert V. Debyle

Aspen Bibliography

No abstract provided.

A Study Of Trihalomethane Precursors In Deer Creek Reservoir, Megan J. White, V. Dean Adams

Reports

Deer Creek Reservoir and tributaries were monitored from May to December 1983 in a study of the occurrence of trihalomethane (THM) precursors in the reservoir and nutrient dynamics of the reservoir system. Microcosms were used to study the effect of the following parameters on THM precursor production in the reservoir system: phosphorus loading, sediment, algal growth, and application of algicide. Additionally, THM precursor concentrations of interstitial water were analyzed in reservoir and microcosm sediment samples. Microcosms treated with ahigh phosphorus loading (70 ug/1) had THM precursor concentrations significantly higher than those measured in microcosms treated with a low phosphorus loading …

Preliminary Identification, Analysis, And Classification Of Odor-Causing Mechanisms Influenced By Decreasing Salinity Of The Great Salt Lake, C. Earl Israelsen, Darwin L. Sorensen, Alberta J. Seierstad, Charlotte Brennard

Reports

Introduction: The rising level of the Great Salt Lake has received a great deal of attention because of the resulting physical damage to adjoining properties, threatened distruption of major transportation facilities, and environmental damage to feeding and resting areas for migratory waterfowl. Another problem of growing concern is that some zones of the lake are producing odors that are objectionable to nearby populated areas. These odors are most offensive during the warm summer months and appear to be increasing with the rising levels and decreasing salinity of the lake water. This report presents the approach taken and the findings of …

Water Education ... With Emphasis On Deer Creek Reservoir - Provo River Drainage Area (Grades 5-8), Donald R. Daugs, C. Earl Israelsen, Mardell C. Parrish

Reports

Introduction: The major goals of this publication are to: * promote an awareness of the importance of water resources associated with the target watershed; * provide teachers with learning resources which are easily used in the classroom or in the field; and * provide teachers with teaching materials which help satisfy State Core Standards.

Water Education Grades K-6, Donald R. Daugs, C. Earl Israelsen

Reports

Preface: Water Activites for Elementary Children is based upon the assumption that children learn best by doing. In education, and especilly in science, talking is not necessarily teaching. The most desireable types of learning involve direct, first hand experience, not just a teacher's interpretation of these experiences. This set of learning experiences has been designed for teachers, teachers-in-training, and children, Each concept includes background information for the teacher and learning activities for the children. Lessons are designed so taht a teacher can successfully teach a unit or lession with a minimum of knowledge, preparation, and equipmnet. Most of the suggested …

Economic Feasibility Of On‑Farm Reservoirs For Irrigation Water, Robert N. Shulstad, Jayson K. Harper, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

No abstract provided.

X-Ray Microanalysis In Cryosections Of Natively Frozen Paramecium Caudatum With Regard To Ion Distribution In Ciliates, M. Schmitz, R. Meyer, K. Zierold

Scanning Electron Microscopy

Cells of Paramecium caudatum were shock-frozen without pretreatment for cryoultramicrotomy and freeze-dried for subsequent X-ray microanalysis. Na, Mg, P, S, Cl, K, and Ca were detected in different amounts in several subcellular compartments. In particular, calcium was localized below the cell surface (pellicle). Trichocysts were found to contain significant amounts of Na in their base but not in the tip. Na, Mg, P, S, Cl, K, Ca were found in electron dense deposits within the lumen of the contractile vacuole. A small K concentration was found in the cytoplasm and in the mitochondria. X-ray microanalysis of the element distribution in …

Utah Science Vol. 45 No. 4, Winter 1984

Utah Science

97 PHOSPHORUS NEEDS OF BEEF CATTLE J. W. Call, J. E. Butcher, J. L. Shupe, A. E. Olson, and J. T. Blake Levels of phosphorus, suggested for normal growth and reproduction, are outlined. Symptoms and lesions of phosphorus deficiency in beef cattle are discussed.

100 FAT CATTLE D. Bailey and B. W. Brorsen The price differences by month and year between Utah and other regional markets for fat cattle were charted and analyzed to help the producer to make effective marketing decisions.

104 THE MALNUTRITION/DIARRHEA CONNECTION R. W. Sidwell, B. B. Barnett, and A. W. Mahoney Using pregnant and newborn …

Wave-Length Dispersive Microprobe Analysis Of Coated Samples Of Bulk Tissues, C. Ward Kischer, Thomas M. Teska

Scanning Electron Microscopy

Hypertrophic scars contain highly pleomorphic cells, including many from the erythrocytic series which have been extravasated. The conventional visual mode of SEM cannot distinguish the cell types with certainty except in the case of typical biconcave disc-shaped erythrocytes. Microprobe elemental analysis might be used to differentiate one type from another on the basis of iron and possibly phosphorus (for nucleated cells). Using coated specimens (gold or gold-palladium) precludes simultaneous visual mode SEM with EDX because of energy line interference with phosphorus and other elements. However, wave-length dispersive analysis offers minimal or no interference, and a coated specimen offers the use …

Intracellular Localization Of Heavy Metals In Yeast By X-Ray Microanalysis, Ljerka Kunst, Godfried M. Roomans

Scanning Electron Microscopy

The intracellular localization of heavy metals in yeast cells was studied by means of energy-dispersive X-ray microanalysis. The yeast, Saccharomyces cerevisiae, was pretreated with phosphate and then loaded with different metal ions, by suspending the cells in salt solutions (Ni, Zn, Cd, Pb, Al and Cr). For the analysis, the cells were embedded in gelatin, rapidly frozen, and thin cryosections were cut on a dry knife.

A considerable uptake of divalent cations by the yeast cells was found to occur. The cations were bound to the polyphosphate granules localized in or close to the cell vacuoles. Immediately after phosphate …

Alterations Of The Intracellular Water And Ion Concentrations In Brain And Liver Cells During Aging As Revealed By Energy Dispersive X-Ray Microanalysis Of Bulk Specimens, Gy. Lustyik, I. Zs.-Nagy

Scanning Electron Microscopy

Age dependence of the intracellular concentrations of monovalent ions (Na+, K+ and Cl-) was examined in 1, 11 and 25-month-old rat brain and liver cells by using energy dispersive X-ray microanalysis. The in vivo concentrations of Na+, K+ and Cl- ions were calculated from two different measurements: The elemental concentrations were measured in freeze-dried tissue pieces, and the intracellular water content was determined by means of a recently developed X-ray microanalytic method, using frozen-hydrated and fractured bulk specimens as well as subsequent freeze-drying.

All the single monovalent ion concentrations and consequently, also the total monovalent ion content showed statistically significant …

Scanning Electron Microscopy Of The Lateral Ventricle Of The Pigeon Brain, P. Mestres, K. Rascher, J. D. Delius

Scanning Electron Microscopy

Adult pigeons of both sexes were used for this study. Depending upon the distribution of various surface profiles, for example cilia, microvilli and blebs, ependymal areas with differing surface patterns were distinguished in the lateral ventricle. The topographical locations of these areas with respect to the underlying forebrain nuclei were determined in accord with the atlas of Karten and Hodos (1967). The medial surface (A) of the ventricle was much more densely ciliated than the lateral surface (B). There did not appear to be any correlation between a given surface pattern and a specific type of underlying nervous tissue. Comparison …

Ultrasonic Microdissection Of Rat Cerebellum For Scanning Electron Microscopy, C. E. Arnett Iii, F. N. Low

Scanning Electron Microscopy

The cerebelli of rats were initially fixed with aldehydes (modified Karnovsky's fixative; 503 mOsM/L) by cardiac perfusion. Blocks of tissue were razor-cut, usually longitudinal to folia, and immersed in the same fluid for 2-4 hours. Three separate methods of treatment followed: (1) immersion in 1% aqueous boric acid, or (2) in 2% phosphate buffered OsO₄ followed by boric acid or (3) in an 8/2 mixture of boric acid and OsO₄. After 18-48 hours immersion the blocks were dehydrated in ascending grades of acetone. They were then exposed to ultrasound in 100% acetone at frequencies of 80 kHz …

Use Of Scanning Electron Microscopy To Study Structural-Functional Relationships In Normal And Diseased Platelets, J. C. Mattson

Scanning Electron Microscopy

This paper reviews the contribution of scanning electron microscopy (SEM) to our understanding of platelet physiology and pathology. Observations of platelet shape changes which accompany activation and the ability to visualize and analyze platelet aggregation and adhesion in three dimensions make this experimental medium an important tool in the evaluation of healthy and diseased platelets. While SEM adds a valuable third dimension to the study of morphology and ultrastructure, its greatest contribution is realized when studies are correlated directly with light and/or transmission electron microscopic observations and with studies of functional capacity.

Recent Advances In Laser Microprobe Mass Analysis (Lamma) Of Inner Ear Tissue, A. Meyer Zum Gottesberge-Orsulakova, R. Kaufmann

Scanning Electron Microscopy

Maintenance of ionic gradients within the various fluids compartments of the inner ear requires transport active cellular systems at different locations. LAMMA analysis is ideally suited for detection of ions in microquantity on cellular levels overcoming many technical difficulties. The present paper summarizes the results of microprobe analysis obtained with laser induced mass spectrometry (LAMMA) supplemented by X-ray microprobe analysis of epithelial cell layers adjacent to the endolymphatic space (a) in the cochlear duct, (b) in the vestibular organ and (c) in the endolymphatic sac. The possible role of inner ear as well as ocular melanin in the mechanisms of …

The Ependyma Of The Cat Central Canal, With Particular Reference To Its Mitochondria-Containing Bulbs, K. Rascher, K. H. Booz, A. C. Nacimiento, E. Donauer

Scanning Electron Microscopy

The ultrastructure of the ependyma in the central canal of adult cats was examined in both the scanning and the transmission electron microscopes (SEM and TEM).

The same morphological details were seen in the ependyma of the central canal as have so frequently been described in the ependyma of the brain ventricular system, for example bundles of cilia, single cilia, microvilli and occasional small cytoplasmic protrusions. The supraependymal cells and supraependymal nerve fibers found in the central canal also resembled those seen in the ventricular system.

The most striking feature of the canal ependyma were the large, spherical bodies containing …