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Articles 152461 - 152490 of 159603
Full-Text Articles in Entire DC Network
Elephantine Animals, Dale J. Osborn
Elephantine Animals, Dale J. Osborn
Elephant
Survey of animals named for features that recall the elephant.
Ivory, Elephants, And Men (A Book Soon To Be Published), Kenneth C. Wylie
Ivory, Elephants, And Men (A Book Soon To Be Published), Kenneth C. Wylie
Elephant
Topical preview of the titular tome.
Eratta And Comments For Elephant Newsletter No. 2, Elephant Editors
Eratta And Comments For Elephant Newsletter No. 2, Elephant Editors
Elephant
List of known errors for Elephant 1.1, w/ additional comments.
Elephant Library, Elephant Editors
Elephant Library, Elephant Editors
Elephant
First mention of the future Elephant Library at the Wayne State University Library System
Ban The Ivory Campaign, Elephant Editors
Ban The Ivory Campaign, Elephant Editors
Elephant
Timeline and details of the Ban The Ivory campaign.
Present Status Of The Asian Elephant (Elephas Maximus Linneaus, 1758), Robert C. D. Olivier
Present Status Of The Asian Elephant (Elephas Maximus Linneaus, 1758), Robert C. D. Olivier
Elephant
Summary of the distribution, population, habitat, conservation, etc. of the Asian Elephant.
Erratum, Elephant Editors
Erratum, Elephant Editors
Elephant
Correction of the location of the Elephant Symposium at the 59th Annual Meeting of the ASM to Corvallis from Portland, Oregon.
Captive Elephant Population, Elephant Editors
Captive Elephant Population, Elephant Editors
Elephant
Survey of elephants in captivity, 1978.
Elephants In The Plant World, Dale J. Osborn
Elephants In The Plant World, Dale J. Osborn
Elephant
Survey of plants named for features that recall the elephant.
Possible Innovations For Teaching Farm Management In Iran, Mehdi- Khosroshahin
Possible Innovations For Teaching Farm Management In Iran, Mehdi- Khosroshahin
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Throughout the history of mankind, agriculture has always been the main element of interest. The early Romans recorded a number of facts in relation to farming and cultivation. Arthur Young, a famous writer about the 19th Century British farming states, "The magic of ownership turns sand to gold." [l, p. 1]
Effect Of Time And Diet On The Immune Status Of Mice Challenged With Herpes-Transformed Cells, Daila S. Gridley
Effect Of Time And Diet On The Immune Status Of Mice Challenged With Herpes-Transformed Cells, Daila S. Gridley
Loma Linda University Electronic Theses, Dissertations & Projects
Human Herpes simplex virus type 2 (HSV 2)-transformed Balb/c mouse cells (H238 cells) are malignant in Balb/c mice. The immune stratus of mice bearing H238 cell-induced tumors was studied and changes in immune response with time and with altered diet of the mice were measured.
In the experiments dealing with the status of immunity with time after tumor cell injection, mice were fed Purina Laboratory Chow (P.L.C.), injected with H238 cells, and sacrificed three to eight weeks post-injection. In the diet experiments, groups of mice were fed either P.L.C. or one of six equicaloric diets, consisting of low or high …
Influence Of Spring Sheep Grazing On The Forage Intake And Quality Of Diets Consumed By Pen-Reared Mule Deer Under Winter-Range Conditions, Kenneth Owen Fulgham
Influence Of Spring Sheep Grazing On The Forage Intake And Quality Of Diets Consumed By Pen-Reared Mule Deer Under Winter-Range Conditions, Kenneth Owen Fulgham
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study examined the nutritional responses of mule deer during winter on range subjected to a system of spring livestock grazing. The specific purposes were 1) to determine the quality (crude protein, digestible energy, and digestibility) of diets consumed by mule deer in winter on ranges grazed and ungrazed by sheep in spring, 2) to determine the level of forage intake, as determined by the external indicator chromic oxide, for deer under the same grazing regimes, 3) to compare forage intake estimates determined by the external indicator (chromic oxide) with results obtained by ocular estimation, and 4) to determine the …
The Social Behavior Of Brown Bears At Mcneil River, Alaska, Allan L. Egbert
The Social Behavior Of Brown Bears At Mcneil River, Alaska, Allan L. Egbert
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The social behavior of brown bears (Ursus arctos) was studied during the summers of 1972 and 1973 as bears fished for salmon at McNeil River, Alaska. Study objectives were to determine behavioral characteristics of bears in relation to sex and age, changes in social behavior over a 40-day long fishing season, social and environmental parameters correlated with the occurrence of behavior, and to test the hypothesis that brown bears modify social behavior in a feeding aggregation to exploit a resource limited in time and space.
Over one-half of the agonistic interactions consisted of passive deferrals. Encounters that included …
A Survey Of Plants And Animals Of Hill And Wendover Bombing Ranges, Western Utah, Mary Sue Fisher
A Survey Of Plants And Animals Of Hill And Wendover Bombing Ranges, Western Utah, Mary Sue Fisher
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
The United States Air Force was required by the Sikes Act (16 USC 670 et seq.) to operate Hill and Wendover Bombing Ranges under a Land and Wildlife Management Plan consistent with military objectives. A preliminary biological inventory was conducted to provide basic information necessary for preparation of an appropriate management plan. The inventory was conducted over a one year period utilizing 60 field days on the ground and 30 hours of flying time. A list of vertebrates present on the bombing ranges was formed by general observation of large mammals, birds and reptiles, and trapping of small mammals. …
The Role Of Vegetation Architecture In Determining Spider Community Organization, Cynthia L. Hatley
The Role Of Vegetation Architecture In Determining Spider Community Organization, Cynthia L. Hatley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The relationships between vegetation architecture and spider community attributes were examined in a big sage (Artemisia tridentata) community. Spiders were separated into guilds using similarities of species' hunting behavior. Shrub architecture was experimentally manipulated in the field by either clipping 50% of a shrub's foliage to decrease foliage density or tying together a shrub's branches to increase foliage density.
Temporal patterns of spider species density, diversity (H') and evenness (J') showed midsummer peaks in both 1974 and 1975. Seasonal spider guild trends reflected the temporal prominence of a member species or genus. These temporally abundant species appeared to …
Quantitation Of Formaldehyde Resulting From Oxidative Deterioration Of Unsaturated Fatty Acids, Stanley J. Andrews
Quantitation Of Formaldehyde Resulting From Oxidative Deterioration Of Unsaturated Fatty Acids, Stanley J. Andrews
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Derivatives of 3-methyl-1-2-benzothiazolinone hydrazone were formed from the oxidation products of three oxidized unsaturated fatty acids. Aeration with oxygen and heat (65C) was used as a means of accelerating deterioration of lipid samples. Formaldehyde was recovered from oxidized pure standards of oleic, linoleic and linolenic acid methyl esters, and identified using gas chromatography. Formaldehyde was also recovered from oxidized lipid extracts of mechanic ally deboned turkey meat and turkey cluster fat. Gas chromatography was used to measure concentrations of unsaturated fatty acids during the oxidation of extracted lipids. Linoleic and linolenic fatty acids significantly decreased (p < .005) in oxidized lipid extracts from turkey cluster fat stored frozen for six months.
Measurement of the amounts …
Biochemical Investigations Of Black Gram (Phaseolus Mungo L.) And Rice (Oryza Sativa L.) Proteins And Their Improved Nutritional Functionality In The Fermented Product—Idli, Vinodkumar W. Padhye
Biochemical Investigations Of Black Gram (Phaseolus Mungo L.) And Rice (Oryza Sativa L.) Proteins And Their Improved Nutritional Functionality In The Fermented Product—Idli, Vinodkumar W. Padhye
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The objectives of this investigation have been to characterize black gram (Phaseolus mungo L.) and rice (Oryza sativa L.) proteins and to study changes in their nutritional value due to fermentation. Black gram, the legume chosen for this work, is one of the most important legume crops throughout a large part of the tropics.
The protein content of 60 mesh, dehydrated, defatted black gram meal was 28.5 percent. Sodium carbonate (0.5-1.0 percent), tetra-sodium pyrophosphate (0.5 percent), and sodium dodecyl sulfate (SDS) (0.5-5 percent) proved to be the potential protein solubilizers as they extracted more than 76 grams of …
A Study Of Sedge-Dominated Areas In The Uinta Mountains, George Murchie Briggs
A Study Of Sedge-Dominated Areas In The Uinta Mountains, George Murchie Briggs
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Twenty-six sedge-dominated sites in the Uinta Mountains of northeastern Utah were studied. These sites could be placed into two categories, wetland sites (those with water-saturated soils) and alpine tundra sites.
The alpine sites had above-ground standing crops between 37 and 206 g/m2. The soils were sandy and low in nutrients. Indirect gradient analysis of the alpine sites showed a relationship between soil stability and vegetation. No other factors were found to be related to overall vegetation patterns.
The wetland sites were dominated by different Carex species than the alpine sites. These wetlands were often patches of monotypic stands. …
Adaptive Significance Of Lactate Dehydrogenase B2 Isozymes In Rainbow Trout, Salmo Gairdneri And A Biochemical Genetic Comparison Of Cutthroat Trout (Salmo Clarki) Populations, Gerald Thomas Klar
Adaptive Significance Of Lactate Dehydrogenase B2 Isozymes In Rainbow Trout, Salmo Gairdneri And A Biochemical Genetic Comparison Of Cutthroat Trout (Salmo Clarki) Populations, Gerald Thomas Klar
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Rainbow trout lactate dehydrogenase (LDH) B2' B2' , B2' B2" and B2" B2" phenotypes were tested under a variety of conditions for swimming endurance, oxygen consumption rates, and blood pH, pO2, and lactate. The B2" B2" phenotype exhibited a lower swimming endurance, under a limited oxygen supply, than the B2' B2' and B2' B2" phenotypes. Blood pH at fatigue did not differ among the LOH phenotypes that swam under low oxygen conditions (2 mg/1). …
Conflict In Outdoor Recreation, Gerald R. Jacob
Conflict In Outdoor Recreation, Gerald R. Jacob
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The causes of conflict among users of outdoor recreation resources have received little attention from recreation researchers. Knowledge of factors responsible for conflict might assist recreation planners' attempts to reduce future instances of conflict and help management focus its conflict resolution efforts. A theory of conflict is offered as the first step in systematically procuring such knowledge. A definition and characteristics of outdoor recreation conflicts are presented; four comprehensive causes of user conflicts are proposed. Ten propositions are used to link these factors to conflict and suggest future research hypotheses. The social psychological dynamics of conflict, as described here, have …
A Discriminant Function Model Of Gray-Headed Junco Habitat, Andrew R. Grainger
A Discriminant Function Model Of Gray-Headed Junco Habitat, Andrew R. Grainger
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This paper presents a description of gray-headed junco habitat in the form of a model based on discriminant function analysis. Junco nests were found by searching randomly located grids on a 7.8 km2 study area in central Utah. Vegetation data was gathered on 500 m2 circular plots surrounding nests and contrasted with similar data from searched grids where nests were not found. The model explains 28 percent of the between-groups variance and correctly classifies 68 percent of the plots.
Plant cover types are good predictors of areas where gray-headed juncos nest, while plant community type descriptions do not …
Plant Succession Studies On Subalpine Acid Mine Spoils In The Beartooth Mountains, Patricia Lea Howard
Plant Succession Studies On Subalpine Acid Mine Spoils In The Beartooth Mountains, Patricia Lea Howard
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Large areas within alpine and subalpine tundra have been by disturbed by mining during this century. The most promising method for retarding deterioration of these areas is revegetation with native species through both seeding and transplants. One natural process of revegetation which occurs on portions of many existing disturbances seems to be the establishment of a few species that expand with time to form matts of plants.
At the McLaren Mine, located at 3000 m elevation in the Beartooth Mountains, Montana, active succession is occurring and is dominated by Carex species. Seed viability and successional patterns studies were conducted on …
Leaf Development Of Rumex Patientia L. Exposed To Uv Irradiation (280-320 Nm), Judith G. Dickson
Leaf Development Of Rumex Patientia L. Exposed To Uv Irradiation (280-320 Nm), Judith G. Dickson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Two factors which affect leaf ontogeny and ultimate leaf size: (1) the rate and duration of cell expansion, and (2) the rate and duration of cell division, were examined for their role in the slowed early growth rate and smaller ultimate leaf size when plants are exposed to ultraviolet-B (UV-B) radiation. Rumex patientia L. was grown in controlled environment chambers under enhanced UV-B radiation (equivalent to daily solar UV-B irradiation at 40°N latitude in mid-May with an atmospheric ozone concentration of 0.20 atm-cm) and control treatments. The pattern of growth as expressed in changes of mean cell size of two …
Population Dynamics And Net Production Of Brown Trout (Salmo Trutta) In Two Areas Of A High Gradient Mountain Stream, Jeffrey C. Gosse
Population Dynamics And Net Production Of Brown Trout (Salmo Trutta) In Two Areas Of A High Gradient Mountain Stream, Jeffrey C. Gosse
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Estimates of the brown trout (Salmo trutta) population were made in two areas of the Blacksmith Fork River, Cache County, Utah, from June 1972 to June 1973. Additional data were obtained on movement, growth, mortality, biomass, production, and yield.
Population density was highly variable in the area where habitat alterations had occurred, but was relatively uniform where the habitat was undisturbed. The brown trout exhibited little movement except during spawning season. Instantaneous growth and mortality rates are provided for each age group.
Mean annual biomass in the two areas was 12.0 and 10.2 grams per square meter and …
Feeding Habits And Reproduction Of Three Sympatric Lizard Species From West-Central Utah, John B. Andre
Feeding Habits And Reproduction Of Three Sympatric Lizard Species From West-Central Utah, John B. Andre
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The feeding habits and reproduction of Uta stansburiana, Crotaphytus collaris and Cnemidophorus tigris during spring and summer 1976 are described. Feeding habits are expressed in percent total number and volume of prey items and frequency of occurrence of each prey category. Importance Values are also calculated. These values better illustrate the feeding habits of the lizard species than either percent total number and volume and frequency of prey category occurrence.
Lizards consume a variety of food items throughout the growing season. Hymenoptera, Coleoptera, Orthoptera and Arachnida are the major prey categories of U. stansburiana. The major prey categories …
Interregional Competition In Markets Facing Utah Livestock And Poultry Producers, Terrell O. Sorensen
Interregional Competition In Markets Facing Utah Livestock And Poultry Producers, Terrell O. Sorensen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this thesis is to make an evaluation of the competitive position of the Utah livestock industry based on feed ingredient and transportation costs, This is done by the use of a linear programming model (MPS-360). This is on the basis of the least cost means of production to meet the quantity demanded of the livestock products. This is accomplished by dividing the United States into six regions where Utah is one of these regions to enable careful consideration of Utah's agricultural enterprises.
Beef, pork, broilers, turkeys, eggs, and milk are the agricultural products used in the model. …
Toxicity, Selectivity, And Efficacy Of Squoxin (1,1'-Methylendi-2-Napthol) To Fishes In Utah Waters, Dexter R. Pitman
Toxicity, Selectivity, And Efficacy Of Squoxin (1,1'-Methylendi-2-Napthol) To Fishes In Utah Waters, Dexter R. Pitman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Squoxin (1,1'-Methylendi-2-napthol) was tested in laboratory and field bioassays to evaluate its biological activity to rainbow trout (Salmo gairdneri), cutthroat trout (Salmo clarki), Utah chub (Gila atraria), carp (Cyprinus carpio), reside shiner (Richardsonius balteatus), and mountain sucker (Catostomus platyrhynchus) under various conditions of water quality and temperature. The compound was toxic to all species and most effective from greatest to least to mountain sucker, reside shiner, Utah chub, cutthroat trout, and rainbow trout and carp. Selectively and safety indices for Utah chub compared with the two species of …
The Effect Of Various Environmental Factors On The Growth Of A Red Pigmented Dunaliella Species From The Great Salt Lake, Sam Oeun May
The Effect Of Various Environmental Factors On The Growth Of A Red Pigmented Dunaliella Species From The Great Salt Lake, Sam Oeun May
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A red, obligately halophilic Dunaliella species believed to be D. salina was isolated from the North Arm of the Great Salt Lake, Utah, and its optimum growth conditions were determined.
The red pigmented Dunaliella species required an optimum NaCl concentration of 10%, temperature 28°C, and an illuminance of 7500 lux. Ammonium carbonate was preferred over potassium nitrate and ammonium chloride. Potassium nitrate was preferred over ammonium chloride. The average division (generation) time under the above conditions was 46.5 hours.
The alga grown in ammonium carbonate showed a lower content of chlorophyll a compared to those grown in potassium nitrate and …
The Impact Of Surface Soil Removal On Plant Production, Transpiration Ratios, Nitrogen Mineralization Rates, Infiltration Rates, Potential Sediment Losses, And Chemical Water Quality Within The Chained And Reseeded Pinyon-Juniper Types In Utah, Steven M. Lyons
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
During the period of October 1974 to August 1976, a study was conducted to measure the effects of surface soil removal on plant production, plant transpiration rates, nitrate nitrogen mineralization rates, and selected hydrologic parameters (infiltration rates, potential sediment production, and chemical quality of runoff water). The treatments were incremental 7.6 centimeter soil layers to a depth of 30.5 centimeters.
Plant production and transpiration ratios (or water use efficiencies) were measured in greenhouse studies using Agrogyron desertorum grown in the incremental 7.6 centimeter soil layers from five study sites throughout the state of Utah, (Blanding, Brush Creek, Milford, Huntington, and …
Ecological Relationships Of Accipiters In Northern Utah - With Special Emphasis On The Effects Of Human Disturbance, Stephen P. Hennessy
Ecological Relationships Of Accipiters In Northern Utah - With Special Emphasis On The Effects Of Human Disturbance, Stephen P. Hennessy
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study was to examine the effect of habitat parameters and human disturbance on the nesting success of goshawks, Cooper's hawks, and sharp-shinned hawks in an area within the Cache National Forest of Utah and Idaho. This research should provide the wildlife manager with information of value in planning recreation areas, roads, timber cuttings, and other activities where impacts are considered.
Of the three accipiter species studied, the goshawk showed the greatest preference for isolation from man. It nested at higher elevations (X=2,065 m); farther from human disturbance (X=250 m); higher in trees …