Life Sciences Commons^™

Watering Tub By The Old Barn

Farming in Arkansas

Color photograph of an old bathtub being repurposed as a watering trough in front of an old wooden barn.

Winter Barnyard Scene

Farming in Arkansas

Photograph of a barnyard scene, which includes chickens in a tree, a cow by the barn, and other chickens roaming free.

Garden Plow And Saw

Farming in Arkansas

Photograph of a garden plow and saw left out in the garden over winter.

On The Notion That Insectivory Is A Specialized Condition, Patricia W. Freeman

University of Nebraska State Museum: Mammalogy Papers

Insectivory as a specialized feeding condition in mammals has not been explored as has been carnivory or herbivory. Insect-feeding, non-edentate mammals have dilambdodont teeth and modifications in the craniomandibular joint which distinguish them from other mammals such as carnivores, herbivores, and omnivores. Variation in a family of insectivorous bats, Molossidae, can be likened functionally to the kinetic-inertial and static-pressure jaw systems noted in rhipidistians, amphibians, and reptiles. Food data show that the bats with the kinetic-inertial system eat moths and ones with the static-pressure system eat beetles. Not only do these insectivorous mammals eat insects, they also are modified to …

Genetic Transformation Among Azotobacter Species, Wayne H. Voth

Dissertations and Theses

Previous methods for genetic transformation in Azotobacter vinelandii have employed poorly defined genetic markers or crude DNA extracts. An improved transformation technique has been developed for use in Azotobacter. The technique was used to transform several strains of Azotobacter with DNA carrying a defined genetic marker. A method for isolating pure, high molecular weight, biologically active DNA from Azotobacter is also presented. Purity of the extracted DNA was determined by standard chemical assays. The molecular weight was determined by boundary sedimentation techniques to be 18.2 megadaltons. DNA was obtained from several mutant strains of Azotobacter. Biological activity of these samples …

Ecological Comparison Of Sigmodon Hispidus And Sigmodon Fulviventer In The Rio Grande Valley, New Mexico, Karen Petersen

Biology ETDs

This study evaluates the potential for competitive interactions between two species of cotton rat along the Rio Grande valley in New Mexico. Field work was carried out on Sigmodon hispidus and S. fulviventer from April, 1976 to August, 1976, at six study sites. Field data gathered included number of juveniles, number of pregnant females and vegetation diversity. Further studies included morphological analysis of museum specimens and a behavioral study of animals brought back to the laboratory.

Population parameters were compared across the study sites for the cotton rats. Neither species has a sex ratio significantly different from 50:50, but the …

Factors Affecting Mating Duration In The Walkingstick Diapheromera Velii (Walsh) (Phasmatodea: Heteronemiidae), John M. Sivinski

Biology ETDs

Mating durations have only recently become the object of detailed research. The stick insect Diapheromera velii mates from 3 to 136 hours, during which time the genitalia are often not inserted, and contact is maintained by a male clasping organ. Prolonged attachment of male D. velii in the absence of copulation is best explained as guarding that assures the efficiency of previously transferred ejaculates by avoiding sperm competition. Oviposition patterns in D. velii are relatively continuous when compared to those of many insects. The result is that female value to males is comparatively constant as well. The amount of time …

The Effects Of Salts And Metals On Germination And Emergence Of Atriplex Canescens (Pursh.) Nutt. And Sporobolus Airoides Torr, Robert L. Edgar

Biology ETDs

Laboratory studies were conducted to determine effects of salts, metals, and their interactions on the germination and emergence of fourwing saltbush [Atriplex canescens (Pursh.) Nutt.] and alkali sacaton (Sporobolus airoides Torr.). These studies, coupled with soil evaluations, should allow one to predict and possibly alleviate germination and emergence inhibition of these two species due to excessive soil salts and metals. Fourwing saltbush germination and emergence is significantly greater with osmotic stress <-3 bars imposed by inorganic salts (NaCl, Na₂SO₄, MgCl₂, MgSO₄, or CaCl₂) than by polyethylene glycol (PEG) (P <.05). Alkali sacaton germination and emergence is significantly better with osmotic stress <-3 bars imposed by NaCl, Na₂SO₄, or CaCl₂ than by …

Verbena Bipinnatifida Nutt., Donna Hobbs

Specimens by Name

No abstract provided.

1977 Performance Of Field Crop Varieties, University Of Tennessee Agricultural Experiment Station, Charles R. Graves

Bulletins

No abstract provided.

Performance Of Vegetable Varieties In Tennessee, University Of Tennessee Agricultural Experiment Station, James F. Brown, Homer D. Swingle, Charles A. Mullins, David L. Coffey

Bulletins

No abstract provided.

Recent Developments In Feed Transportation To New England, Stanley K. Seaver, William J. Hanekamp

Storrs Agricultural Experiment Station

No abstract provided.

Southeast South Dakota Experiment Farm Annual Progress Report, 1977, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This seventeenth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn breeding and performance, soybean research and planting, crop rotation.

Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 1977, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1977 progress report for the Central Crops and Soils Research Station at Highmore, South Dakota State College. This document represents the research conducted at the Station during the 1977 crop season including: weather data, tillage and fertility experiments, hay, haylage and silage production, small grain trials, grass testing, the effect of fungicide treatment and spring tillage on root and crown disease of era spring wheat, horticulture research, and fruit planting.

Influence Of Endomycorrhizae On Growth Of Sweetgum Seedlings From Eight Mother Trees, Richard C. Schultz, Paul P. Kormanik, William C. Bryan

Richard C. Schultz

Sweetgum seedlings from eight mother trees were grown in fumigated soil with or without the endomycorrhizal fungus Glomus mosseae at four levels of soil fertility for one growing season in nursery microplots. Nonmycorrhizal seedlings of all families died or failed to exceed 5 cm in height regardless of soil fertility. Endomycorrhizal seedlings suffered little mortality, averaged about 36 cm in height, and fertility level did not significantly influence their biomass. These results demonstrate that to increase the percentage of plantable seedlings in nurseries sweetgum seedlings must be endomycorrhizal. The data further suggests that adequate endomycorrhizal inoculum in nursery beds can …

A Study Of The Water Retention Of Latex Bound Pigmented Coating Colors, Patrick T. Gibney

Paper Engineering Senior Theses

The purpose of this study was to examine the effects of three types of commercially used hydrocolloid; CMC 7M, CMC 7L, HEC 250M and KELGIN MV on water retention and on coated paper properties. It was found that the concentration of hydrocolloid was an important factor in water retention values. Carboxyl groups were theorized to be another factor in water retention. Hydrocolloids were found to lower opacity, brightness and gloss over the blank coating. Increasing hydrocolloid levels decreased the openness of the coating. When increasing the amount of hydrocolloid the IGT pick decreased. KELGIN MV gave the highest water retention …

Front Matter

Henry Ford Hospital Medical Journal

No abstract provided.

Colonoscopic Polypectomy In A Preschool-Age Child, Carlos A. Ricotti, Bernard M. Schuman

Henry Ford Hospital Medical Journal

Colonoscopy Is a procedure used worldwide in the adult population. Here we report the case of a colonoscopic polypectomy in a preschool-age child, and we show once more that the procedure Is a safe one to perform In children if the appropriate precautions are taken.

Long-Term Survival After Onset Of Blast Crisis In Chronic Granulocytic Leukemia: Case Report And Therapeutic Considerations, Ellis J. Van Slyck, Ahmad Samhouri

Henry Ford Hospital Medical Journal

Current analysis indicates a median survival of 3.6 months in 356 cases of chronic granulocytic leukemia after onset of blast transformation. Thirty-five (10.0%) complete remissions (CR), all of short duration, were observed. Closer scrutiny of the reported clinical experience offers clues for improving this poor outlook. A 76% CR rate can be extracted from this total experience by identifying cases treated with cytoslne arabinoside combined with one or more other agents. In isolated reports, weekly vincristine and prednisone have yielded good remission rates. Two general morphologic types of blasts can be distinguished by cytochemical stains and other features: lymphoid and …

Legionnaires' Disease: Description Of A Sporadic Case, Louis D. Saravolatz, Gene Tilchen

Henry Ford Hospital Medical Journal

This first case of Legionnaires' disease seen at Henry Ford Hospital is described. A previously healthy 72-year-old man developed progressive pneumonia in September, 1977; it was unresponsive to treatment with cephalothin. However, he rapidly recovered when the treatment was changed to oral erythromycin. Diagnosis was established by serologic studies done at the Center for Disease Control. This pneumonia occurred in a sporadic form with no evidence of secondary cases.

Studies On Uveitis Part I: Aqueous Studies, Philip C. Hessburg

Henry Ford Hospital Medical Journal

Aqueous microbiological and cytological studies were performed on 134 anterior chamber taps done on 118 patients both with and without uveitis. Cell wall defective bacterial forms (CWDF) were recovered from about 40% of these aqueous specimens and classical bacteria were recovered from 12%. A statistically significant difference could not be found between the incidence of bacterial cell wall defective forms in the various anatomical types of uveitis. There were hints from this work that the presence of CWDF In the aqueous was more frequent in younger patients with uveitis, early in the uveitis attack, if there were multiple foci of …

Primary Hepatic Tumors In Women On Oral Contraceptives, V. Maciel, H. Allen, C. Grodsinsky

Henry Ford Hospital Medical Journal

Liver cell adenoma and focal nodular hyperplasia have been recognized as rare benign tumors. Their relationship with the use of oral contraceptives has been suggested since 1973. At Henry Ford Hospital, we have had four patients, ages 19, 23, 25,and 30, on oral contraceptives who presented with different clinical pictures suggesting acute abdomen. A hepatic tumor was suspected preoperatively in one patient, was found at laparotomy for biliary tract disease in two other cases, while the fourth patient presented with acute intra-abdominal hemorrhage. Hepatic resection was performed successfully in all with no mortality. The clinical presentation and diagnostic and surgical …

Effect Of Steroids On Patients With Postoperative Bowel Anastomotic Dysfunction, Luis H. Toledo-Pereya, Ignacio Guzman, Earl G. Yonehiro

Henry Ford Hospital Medical Journal

Ten patients who developed anastomotic edema following large or small intestinal anastomosis had a rapid recovery after treatment with dexamethasone. The clinical and radiologic picture of adynamic ileus disappeared rapidly. There were no Immediate or long-term (more than two years) complications or side effects associated with the use of dexamethasone. This preliminary report indicates that dexamethasone may be a beneficial agent In the control of anastomotic edema.

Back Matter

Henry Ford Hospital Medical Journal

No abstract provided.

Why Does Spruce Not Invade The High Elevation Beech Forests Of The Great Smoky Mountains?, Robert Dale Fuller

Masters Theses

Above 1,370 m, spruce-fir forests dominated by Picea rubens Sargent and Abies fraseri (Pursh) Poiret from a nearly continuous band across much of the landscape of the Southern Appalachian Mountains. Nearly pure stands of American Beech (Fagus grandifolia Ehrhart) penetrate into the spruce-fir forest on south-facing concave slopes, near the tops of major ridges. Frequently the boundary between these two community types is very abrupt.

Important factors in the maintenance of these so-called "beech gaps" against red spruce invasion were investigated. Soil temperature, soil moisture, and the presence of biotic toxins were studied in the rooting environment of potentially …

Discriminant Analysis Of Some East Tennessee Forest Herb Niches, Linda K. Mann

Masters Theses

The purpose of this study was to evaluate the effectiveness of using discriminant analysis in assessing plant niches. As a preliminary to establishment of the Environmental Research Park Program at Oak Ridge, Tennessee, five sites were inventoried for herbaceous species. From this inventory, four sympatric species of Galium and seventeen co-occurring herbaceous species were selected for discriminant analysis. The four species of Galium were treated as two data sets: one was composed of information collected at one site (a mesic hardwood area) and the other contained data from two cedar sites of shallow soil over lime-stone bedrock. The seventeen herbaceous …

The Flora Of Citico Creek Wilderness Study Area, Cherokee National Forest, Monroe County, Tennessee, Jeffry Lowell Malter

Masters Theses

Citico Creek Wilderness Study Area, located entirely within the Cherokee National Forest, Monroe County, Tennessee, is under consideration for inclusion in the National Wilderness System. A study of the vascular flora of this 6,716 hectare area was conducted between March, 1976 and September, 1977. A total of 536 taxa, including 259 county records, was determined. This represents approximately 23% of the state flora.

Pertinent literature on the history, climate, geology, soils, and vegetation of the area is summarized. Particular note has been made of rare plants, with seven on the Tennessee list being found. One of these, Juncus gymnocarpus Coville, …

Visit Of Working Party On North Kimberley Agricultural Development To The Area In July 1977, D G. Wilcox, J Ripley, R F. Johnson

Resource management technical reports

Report suggests that the area of land suitable for Townsville Stylo in the North Kimberley above the 750 mm rainfall isohyet is about 1.25 million hectares. The regions in which land suitable for Stylosanthes can be found are shown. A brief description of the suitability of the land systems of the region for Stylosanthes is given.

Aspects Of Reproduction And Population Dynamics Of Bobcats In Wyoming, Douglas M. Crowe

Great Plains Wildlife Damage Control Workshop Proceedings

Distribution of the bobcat includes the 48 contiguous United States and limited occupance of southern Canada and northern Mexico. There are 11 subspecies, the one in Wyoming being Lynx rufus pallescens. Bobcats inhabit an amazing variety of habitat types, from northern boreal forests, southern swamp, and cane regions to the below sea level desert of Death Valley, California. Throughout this vast area, they utilize a wide variety of prey species. One study in Wyoming revealed at least 18 different species in the stomachs of bobcats; the cottontail rabbit being predominant. A similar study in New England revealed 20 different …

A Matter Of Understanding: An Environmental Protection Agency Film On Coyotes, F. Robert Henderson

Great Plains Wildlife Damage Control Workshop Proceedings

This movie gives facts concerning the coyote. A better understanding of other living things will determine how responsibly we make adjustments in the environment and govern the earth we share with the coyote and other creatures.