Browsing Life and Environmental Sciences by Title
Now showing items 1-20 of 646
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4-Pentenoic Acid As An Inducer Of The Symptoms Of Reye's Syndrom In Laboratory Rats
(1977-04-01)The study includes a summary of clinical manifestations, biochemistry, and pathology of Reye's syndrome as well as potential etiologies and improved modes of treatment. It also explores a model introduced by Glasgow and ... -
A Biological And Chemical Study Of The Effluent Of The Helena Wastewater Treatment Plant
(1983-04-01)This study included four water quality parameters from the effluent of the Helena Waste Water Treatment Plant. These parameters were coliform counts, chlorine levels, phosphate levels, and nitrate levels. We found substantial ... -
A Characterization And Enumeration Of Blood Cells In The Cutthroat Trout (Salmo clarki)
(1981-04-01)Morphological characteristics of blood cells in the cutthroat trout (Salmo clarki) were explored. Such factors as mass, length, and sex were checked for relative occurrence of blood cells. Results indicate there is no ... -
A Comparative Analysis Of Aleutian Disease Virus Strains: Protein Expression And DNA Similarity In ADV Plasmids
(1984-04-01)Comparative studies of protein expression and DNA similarity were carried out on two recombinant plasmids of Aleutian Disease Virus. ADV-G genome molecularly cloned into plasmid pUC8 is designated pBMl and a Danish isolate ... -
A Comparative Study of the Binding of Two Lectins in the Early Development of the Freshwater Sponge, Ephydatia mulleri
(1996-04-01)Carbohydrates have been implicated in cell adhesion and in developmental processes. Lectin histochemistry using ConcanavalinA and Lotus lectin was used to localize lectin-accessible mannosyl and fucosyl residues in a ... -
A Comparative Study On The Effects Of Various Protease Treatments Upon The Structure, Immunogenicity, And Infectivity Of The Elementary Bodies OF Chlamydia Trachomatis (Strains L2 And D) And Chlamydia Psittaci (Strain MN)
(1985-04-01)The effects of several proteases upon the structure, immunogenicity, and infectivity of the elementary bodies (EBs) of Chlamydia trachomatis (strains L2 and D) and ot C. psittaci (strain MN) was studied. Four major proteases ... -
A Comparison Of Lead Levels In Human Deciduous Teeth In Helena, East Helena And The Helena Valley
(1978-04-01)Human deciduous teeth from industrial East Helena, suburban Helena and the rural Helena Valley were contrasted for lead content. The highest level of tooth lead concentration was found in East Helena, where a lead smelter ... -
A Comparison of Microbial Hydrocarbon Degraders Based On the Source of the Contaminant in Alaska
(1999-04-01)The overall objective of this study was to compare microbial hydrocarbon degraders based on their source of contaminant. The research involved enrichment of a single bacterial isolate from each of five hydrocarbon-contaminated ... -
A Comparison Of The Viability Of Streptococcus Lactis After Freeze Drying From Blood Serum And Skim Milk
(1959-04-01)The process of freeze drying has been successfully used to preserve bacterial cultures over long periods of time. This process assures no alteration of the biological characteristics, either physical or chemical, of the ... -
A Comprehensive Analysis Of The Proposed Alternatives For Grizzly Bear Reintroduction Into The Bitterroot Ecosystem
(2000-04-01)In 1997, the United States Fish and Wildlife Service (USFWS) issued a Draft Environmental Impact Statement (DEIS) proposing possible modes of grizzly bear recovery in the Bitterroot Ecosystem (BE) of Central Idaho and ... -
A Consideration Of Cellular Aggregation
(1967-04-01)The migration and aggregation of isolated cells occurs naturally as a functional aspect of embryogenesis and continues later as a natural phenomenon in adult organisms. As an example of the former one may cite the complexities ... -
A Consideration Of The Hormone Calcitonin And Its Possible Mode Of Action
(1972-04-01)French physiologist Claude Bernard (1813-1878) was the first investigator to recognize that the composition of the fluids bathing the cells of the multicellular organisms must be controlled. He proposed that the stability ... -
A Controlled-Environment Study Of The Effects Of Simulated Acid Precipitation On Crops
(1985-04-01)A controlled-field environment was utilized in two studies to determine the effects of various levels of rain acidities on crops. In the first study, a crop mixture (Trifolium pratense L., cv. 'Arlington' and Phleum pratense ... -
A Cytogenetic Analysis of the Simulium arcticum Complex at the Little Blackfoot River, Powell County, Montana
(2006-04-01)This two-year study of the chromosome diversity within the Simulium arcticum complex within the Little Blackfoot River Drainage addressed the following study objectives: 1) determination of the distribution and frequency ... -
A Cytogenetic Study of Chromosomal Diversity of Simulium arcticum at Ten-mile Creek, Lewis and Clark County, MT
(2003-04-01)Preliminary studies by Rhodes (2001) indicate that the IIL-3 and IIL-7 sibling species of the black fly, S. arcticum, occur at Little Prickly Pear Creek (LPPC), Lewis and Clark County, Montana. The occurrence and chromosomal ... -
A Cytological Description of the Simulium arcticum Complex (Diptera: Simuliidae) of Central Montana: Sibling Species Status
(2001-04-01)Polytene chromosomes of black flies, (Diptera: Simuliidae), were studied at Little Prickly Pear Creek (LLPC), Lewis and Clark County, Montana during the summer of 2000. Larvae from the LPPC were predominantly Simulium ... -
A Determination Of The Placental Permeability Of Morphine-3-Glucuronide In Guinea Pigs Using High Pressure Liquid Chromatography With Ultra-Violet Detection
(1987-04-01)Morphine (M) is conjugated to glucuronic acid in the fetus. This metabolite, morphine-3-glucuronide (M3G), is less lipid soluble and larger than M. Because of the potential for fetal accumulation (1) and toxicity (2) the ... -
A General Study of Dendroctonus ponderosae Infestation of Pinus ponderosa (Area of General Study: Grizzly Gulch, Helena National Forest)
(1973-04-01)We discovered after some research that there had not been any comprehensive studies done on the mountain pine beetle, Dendroctonus ponderosae (Hopkins), infesting ponderosa pine, Pinus ponderosa (Laws), though it is mentioned ... -
A Genetic Study Of Feral Equids In The Western United States Through Polyacrylamide Gel Electrophoresis And Isoelectric Focusing
(1986-04-01)An attempt was made to determine the degree of genetic uniqueness among feral horses in the western United States. Blood samples were collected from 86 feral horses in six separate herds in California, Oregon, Idaho, and ... -
A Genetic Study Of The Murine Humoral Immune Response To MCF-247 Virus
(1983-04-01)Mink cell focus-inducing virus MCF-247 was inoculated into various strains of mice to determine whether any of these strains mount a humoral immune response to the virus. Finding that there were both responders and ...