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Articles 361 - 381 of 381

Full-Text Articles in Biology

Differential Clotting Responses Of Rabbits To Injections Of Homogenates From Wild-Type And Tumorous-Head Drosophila Melanogaster, Alfred B. Cox Apr 1978

Differential Clotting Responses Of Rabbits To Injections Of Homogenates From Wild-Type And Tumorous-Head Drosophila Melanogaster, Alfred B. Cox

Retrospective Theses and Dissertations

Two groups of New Zealand white rabbits were injected with homogenates from Tumorous-head (Tuh) and Wild-type (WT) Drosophila melanogaster. A third group was used as a saline injected control. Blood collected in both acute and chronic studies was subjected to various hematological and post mortem studies. The Tuh injected group showed a five-fold increase in thrombocytes (blood platelets) over the controls and four-fold increase over the wild-type group. Reduced clotting times were noted from acute to chronic studies in both tumorous and wild-type studies; however, the magnitude of change between the two groups was insignificant. Investigations involving electrophoretic banding patterns, …

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A Correlation Study On The Chronic Obstructive Pulmonary Diseases, Lynn Walter Capraun Jan 1978

A Correlation Study On The Chronic Obstructive Pulmonary Diseases, Lynn Walter Capraun

Retrospective Theses and Dissertations

Data were extracted from medical records of 202 former patients of a well established central Florida general hospital. Records were selected so as to include an equal number of disease categories dispersed equally over the two years. One hundred records were dated 1973 and 102 were dated 1976. Emphysema, chronic bronchitis, and asthma had been diagnosed in 67, 67, and 68 of the cases respectively. The age, sex, race, smoking habits, and occupations of the patients were recorded and crosstabulated with the diagnostic tests and subsequent treatment ordered by the various physicians. Most of the emphysematous patients were males over …

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Zooplankton Abundance And Diversity In Central Florida Grass Carp Ponds, Douglas Lee Fry Jan 1978

Zooplankton Abundance And Diversity In Central Florida Grass Carp Ponds, Douglas Lee Fry

Retrospective Theses and Dissertations

The effect of the Asian grass carp (Ctenopharyngodon idella Val.) and aquatic vegetation upon the zooplankton in four adjacent experimental ponds (0.139 ha each) was studied for one year. Zooplankton were collected with a newly designed shallow-water sampler. Pond 1 contained no aquatic vegetation. Ponds 2, 3, and 4 contained nine species of rooted aquatic plants. Grass carp were stocked into Pond 2 (65 per ha) and Pond 3 (611 per ha). Physicochemical parameters were similar among the ponds. Eighty-eight zooplankton species were enumerated. The abundance of zooplankton groups (Rotifera, Cladocera, and Copepoda) was not significantly different among the ponds …

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Arthropod Community Dynamics In Three Ruderal Old Fields With Possible Effects Of Solid Rocket Fuel Exhaust, Russell D. Caldwell Jan 1978

Arthropod Community Dynamics In Three Ruderal Old Fields With Possible Effects Of Solid Rocket Fuel Exhaust, Russell D. Caldwell

Retrospective Theses and Dissertations

Arthropods were collected at three sites on the Canaveral Peninsula of the east central Florida coast, from May until November, 1975. These sites were old fields dominated by grasses and herbs and one of them (site 1) was located near Launch Complex 41, Kennedy Space Center. A modified drop-trap of 0.5 m2 was used to trap arthropods at approximately 14-day intervals. A vacuum collector removed the arthropods and loose material which was visually inspected for arthropods by the unaided eye and a 7X dissecting scope. A total of 12,296 arthropods was collected during the study. Insects were by far the …

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A Comparative Study Of Aldehyde Oxidase From Tumorous-Head And Oregon-R-C Strains Of Drosophila Melanogaster, Richard A. Respess Jan 1977

A Comparative Study Of Aldehyde Oxidase From Tumorous-Head And Oregon-R-C Strains Of Drosophila Melanogaster, Richard A. Respess

Retrospective Theses and Dissertations

Aldehyde oxidase has been partially purified from Oregon-R-C and tuh(ASU) strains of Drosophila melanogaster using an affinity technique. The two enzymes were subjected to a partial kinetic analysis and found to be very similar to one another. This indicated the problem of elevated aldehyde oxidase activity in tuh(ASU) at key developmental stages (Kuhn and Cunningham, 1976) is due to an abnormal regulation. A comparative isozyme study through the developmental stages showed no major differences between the enzymes indirectly supporting the idea of an abnormal regulation. A comparison of tuh(ASU) with four wild-type strains indicated it may be a fourth allozyme …

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The Effects Of Enzymes On Activated Sludge Floc, Terry Lee Stoddart Jan 1977

The Effects Of Enzymes On Activated Sludge Floc, Terry Lee Stoddart

Retrospective Theses and Dissertations

Dialysed activated sludge was used as a substrate to test for enzymes which can hydrolyse activated sludge floc. Two hundred and fifty aerobic and anaerobic microorganisms were tested against activated sludge for the presence of hydrolytic enzymes. These included known genera and organisms obtained by various enrichment procedures. Anaerobic digester mixed liquor was contacted with activated sludge agar under anaerobic conditions. None of the microorganisms present in the digester liquor hydrolysed the floc. The following commercial enzymes were contacted with activated sludge singly, in combination, and sequentially under various physical and chemical conditions: protease, lipase, cellulose, pectinase, phospholipase C, trypsin, …

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Comparative Histology Of The Respiratory Tract Of Normal Peromyscus Floridanus And P. Gossypinus And Effects Of Exposure To Solid Rocket Motor Fuel Exhaust On P. Gossypinus, Terry Lee Bitner Jan 1977

Comparative Histology Of The Respiratory Tract Of Normal Peromyscus Floridanus And P. Gossypinus And Effects Of Exposure To Solid Rocket Motor Fuel Exhaust On P. Gossypinus, Terry Lee Bitner

Retrospective Theses and Dissertations

Microscopic examination of the tracheal dimensions of normal Florida mice (Peromyscus floridanus) and cotton mice (P. gossypinus) showed no significant differences between the two species, but external examination showed the tracheal length of the Florida mouse to be longer than that of the cotton mouse. Microscopic examination of the intrapulmonary apparatus (bronchioles, alveolar ducts, atria, and alveoli) of normal Florida and cotton mice showed no significant differences in measurements between the two species. Cotton mice were exposed to exhaust gases produced by the burning of solid rocket motor (SRM) fuel. Mice exposed once for a duration of 10 min demonstrated …

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Temperature Effects On Distribution Of 14c Photosynthetic Assimilates And Light Stimulation Of Cold Hardiness In 'Valencia' Orange Seedlings, Charles Guy Jan 1977

Temperature Effects On Distribution Of 14c Photosynthetic Assimilates And Light Stimulation Of Cold Hardiness In 'Valencia' Orange Seedlings, Charles Guy

Retrospective Theses and Dissertations

No abstract provided.

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Antibodies To Milk Antigens In Human Coronary Heart Disease, Efstathios Spinos Jan 1977

Antibodies To Milk Antigens In Human Coronary Heart Disease, Efstathios Spinos

Retrospective Theses and Dissertations

Milk protein has been implicated as a factor in the development of atherosclerosis. Significantly higher titers of antibodies (P < 0.0002) toward milk antigens were observed in patients suffering from coronary heart disease as compared to age matched controls. These hemagglutination titers were not sex related but may have been related to age. Specificity of the antigen-antibody reaction was demonstrated by a hemagglutination inhibition test. The complement fixation test was evaluated and was less sensitive than the tanned hemaggIutination test. Treatment with 2-mercapto-ethanol resulted in reduced hemagglutination titers, indicating that significant antibody activity may be due to IgM. A special application of the Combs test detected specific antibodies on the surface of tanned and coated RBC which did not otherwise produce detectable agglutination.

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Reproductive Parameters For Nine Avian Species At Moore Creek, Merritt Island National Wildlife Refuge, G. Tanner Girard Jan 1976

Reproductive Parameters For Nine Avian Species At Moore Creek, Merritt Island National Wildlife Refuge, G. Tanner Girard

Retrospective Theses and Dissertations

No abstract provided.

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Some Effects Of Solid Rocket Motor Fuel Exhausts On Avian Embryos, Lindsey Elliott Deguehery Jan 1976

Some Effects Of Solid Rocket Motor Fuel Exhausts On Avian Embryos, Lindsey Elliott Deguehery

Retrospective Theses and Dissertations

Fertile White Leghorn (Gallus gallus) and Bobwhite Quail (Colinus virginianus) were subjected to 15 min exposures produced by burning solid rocket motor (SRM) fuel. Comparative mortality data were collected. Chicken eggs were further used to study the effects of exposure on water relations and blood gas parameters. Chicken embryos exposed once on day 19 or incubation demonstrated and LD50 of 204 ppm; the LD50 for quail embryos was 175 ppm. When mortality was regressed on the final exposure concentration, chicken and quail embryos exposed on days 12 and 19 showed LD50's of 127 and 86 ppm respectively, and embryos exposed …

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Current Status Of Murine Typhus, Dorothy Wilson Freeman Jan 1976

Current Status Of Murine Typhus, Dorothy Wilson Freeman

Retrospective Theses and Dissertations

No abstract provided.

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Developmental Study Of The Tumorous-Head Strain Of Drosophila Melanogaster, Suzanne Frances Dorgan Jan 1975

Developmental Study Of The Tumorous-Head Strain Of Drosophila Melanogaster, Suzanne Frances Dorgan

Retrospective Theses and Dissertations

No abstract provided.

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Net Primary Production Of Spartina And Species Diversity Of Associated Macroinvertebrates Of A Semi-Impounded Salt Marsh, Larry Alan Chynoweth Jan 1975

Net Primary Production Of Spartina And Species Diversity Of Associated Macroinvertebrates Of A Semi-Impounded Salt Marsh, Larry Alan Chynoweth

Retrospective Theses and Dissertations

No abstract provided.

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Numerical Taxonomy Of Anaerobic Bacteria Isolated From Ground Water Of A Sanitary Landfill, Kenneth J. Curry Jan 1975

Numerical Taxonomy Of Anaerobic Bacteria Isolated From Ground Water Of A Sanitary Landfill, Kenneth J. Curry

Retrospective Theses and Dissertations

Section I: Facultative and obligatory anaerobic bacteria were isolated from the ground water of a sanitary landfill characterized by sandy soil and a periodically high water table. Isolates were examined for 63 characteristics and subject to numerical analysis. Eight clusters were established and correlations with conventional taxonomy were made. The Bacteriodaceae were found to be the dominant group of organisms by the methods employed. The anaerobic population was observed to decrease as the period of seasonal rainfall ended. At the same time, gram positive anaerobes were largely replaced with gram negative ones. Leaching between sampling sites (wells) made correlations between …

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Cyclic Patterns Of Central Florida Sooty Mold, Bobby Ray Pohlad Jan 1975

Cyclic Patterns Of Central Florida Sooty Mold, Bobby Ray Pohlad

Retrospective Theses and Dissertations

This study was conducted to record seasonal variations in the epiphyllous sooty mold colonies found on citrus leaves in two central Florida citrus groves, to determine basic patterns of fungal growth throughout the year and to determine whether these general patterns are correlated with regional climatological data. The results indicated general seasonal variations in the reproductive units of five of the fungi from the colony. In the study, correlations were seen between the two Ascomycetes, Treubiomyces pulcherrimus and Trichomerium didymopanacis. They were found fruiting most abundantly during the winter and spring. Reproductive units of two asexual sooty mold species (Podoxyphium …

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A Serological Survey Of Greater Orlando Human, Canine, And Feline Populations For The Presence Of Antibodies To Toxoplasma Gondii, John Louis Weihe Jan 1975

A Serological Survey Of Greater Orlando Human, Canine, And Feline Populations For The Presence Of Antibodies To Toxoplasma Gondii, John Louis Weihe

Retrospective Theses and Dissertations

Toxoplasma gondii, the etiological agent of toxoplasmosis, was first discovered in Ctenodactylus gondi, an small North African rodent, by Nicolle and Manceaux in 1908. Later the same year Splendore observed the organism in a laboratory rabbit. Human infection was first reported by Janku in 1923. Since its discovery, many investigations have shown the organism to be truly unique in the protozoan world. There appears to be only one species and only one serotype. Serologic and microscopic studies reveal Toxoplasma to have a vast host range. At least one representative of virtually every mammalian species tested harbored the parasite or showed …

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An Immunological Approach To The Study Of The Tumorous-Head Trait In Drosophila Melanogaster, Patricia Neuhaus Weihe Jan 1975

An Immunological Approach To The Study Of The Tumorous-Head Trait In Drosophila Melanogaster, Patricia Neuhaus Weihe

Retrospective Theses and Dissertations

No abstract provided.

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Immunological Studies Of The Host Parasite Relationship Of Dirofilaria Immitis In Domestic Canines, Douglas Felton Qualls Jan 1975

Immunological Studies Of The Host Parasite Relationship Of Dirofilaria Immitis In Domestic Canines, Douglas Felton Qualls

Retrospective Theses and Dissertations

Canine immunoglobulins of the IgG group were shown to be intimately associated with the cuticle of circulating non-infection Dirofilaria immitis microfilaria. The significance of these immunoglobulins in blocking a complete immune response in the definitive host is discussed. Immunodiffusion, immunoelectrophoresis and fluorescent inhibition techniques are described and their applicability to the study of host-parasite relationships are evaluated. A rapid reproducible method for the production of specifically labeled anti-D. immitis microfilaria globulins is presented.

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Nest-Building Behavior And Food Habits Of The Rice Rat, Oryzomys Palustris Natator From Merritt Island, Brevard County, Florida, Margaret Hart Harrison Jan 1974

Nest-Building Behavior And Food Habits Of The Rice Rat, Oryzomys Palustris Natator From Merritt Island, Brevard County, Florida, Margaret Hart Harrison

Retrospective Theses and Dissertations

No abstract provided.

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Morphological Variation And Local Distribution Of Cyprinodon Variegatus In Florida., William Everette Johnson Jan 1974

Morphological Variation And Local Distribution Of Cyprinodon Variegatus In Florida., William Everette Johnson

Retrospective Theses and Dissertations

No abstract provided.

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