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964 Matching Results
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Serology of Aerobic Aquatic Actinomycetes I. Factors Involved in Antiserum Production and In Vitro Antigen-Antibody Reactions
Article on the serology of aerobic aquatic actinomycetes and factors involved in antiserum production and in vitro antigen-antibody reactions.
Date:
February 23, 1962
Creator:
Guthrie, R. K.; Roach, A. W. & Ferguson, J. K.
Object Type:
Article
System:
The UNT Digital Library
Serology of Aerobic Aquatic Actinomycetes
Article on the serology of aerobic aquatic actinomycetes.
Date:
February 13, 1963
Creator:
Guthrie, R. K.; Roach, A. W. & Ferguson, J. K.
Object Type:
Article
System:
The UNT Digital Library
Membrane Filter-Fluorescent-Antibody Method for Detection and Enumeration of Bacteria in Water
Article on membrane filter-fluorescent-antibody method for detection and enumeration of bacteria in water.
Date:
March 1969
Creator:
Guthrie, R. K. & Reeder, Dennis J.
Object Type:
Article
System:
The UNT Digital Library
The accessory role of the diaphragmaticus muscle in lung ventilation in the estuarine crocodile Crocodylus porosus
This article explores lung ventilation in crocodilians through direct measurements of ventilation, metabolic rate, and arterial blood gases of juvenile estuarine crocodiles in varying conditions. The results suggest that, in C. porosus, costal ventilation alone is able to support metabolic demands at rest, and the diaphragmaticus is largely an accessory muscle used at times of elevated metabolic demand.
Date:
November 17, 2011
Creator:
Munns, Suzanne L.; Owerkowicz, Tomasz; Andrewartha, Sarah J. & Frappell, Peter B.
Object Type:
Article
System:
The UNT Digital Library
Ultrastructure of Azotobacter vinelandii
Article discussing research on vegetative cells and cysts for Azotobacter vinelandii 12837 prepared for electron microscopy by several methods assumed to preserve structural details destroyed by techniques previously reported in literature.
Date:
August 8, 1970
Creator:
Vela, G. Roland, 1927-; Cagle, Gerald D. & Holmgren, P. R.
Object Type:
Article
System:
The UNT Digital Library
Passive Dispersal of Algae and Protozoa Internally and Externally by Selected Aquatic Insects
This investigation was concerned with three aspects of the problem of passive dispersal of algae and protozoa by aquatic insects: the role of odonates in passive dispersal of viable small aquatic organisms, the passage of viable algae and protozoa through digestive tracts of field-collected herbivorous and carnivorous aquatic insects, and the viability duration of selected algae, during insect transport under monitored conditions.
Date:
December 1970
Creator:
Solon, Bernard M. (Bernard Michael), 1932-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Giant Cysts and Cysts with Multiple Central Bodies in Azotobacter vinelandii
Article on giant cysts and cysts with multiple central bodies in Azotobacter vinelandii.
Date:
July 1, 1971
Creator:
Cagle, Gerald D. & Vela, G. Roland, 1927-
Object Type:
Article
System:
The UNT Digital Library
Freeze-Etching of Azotobacter vinelandii: Examination of Wall, Exine, and Vesicles
Article on the freeze-etching of Azotobacter vinelandii and an examination of wall, exine, and vesicles.
Date:
March 1972
Creator:
Cagle, Gerald D.; Vela, G. Roland, 1927- & Pfister, Robert M.
Object Type:
Article
System:
The UNT Digital Library
Effect of Peptone on Azotobacter Morphology
Article on pleomorphism in cultures of Azotobacter vinelandii, induced by the addition of Difco peptone to the growth medium.
Date:
July 1972
Creator:
Vela, G. Roland, 1927- & Rosenthal, R. S.
Object Type:
Article
System:
The UNT Digital Library
Improved Staining of Extracellular Polymer for Electron Microscopy: Examination of Azotobacter, Zoogloea, Leuconostoc, and Bacillus
Article on improved staining of extracellular polymer for electron microscopy and an examination of Azotobacter, Zoogloea, Leuconostoc, and Bacillus.
Date:
September 1972
Creator:
Cagle, Gerald D.; Pfister, Robert M. & Vela, G. Roland, 1927-
Object Type:
Article
System:
The UNT Digital Library
Cysts of Azotobacter vinelandii with Double Coats
Article on members of the genus Azotobacter, which are characterized by their ability to form cysts.
Date:
October 1972
Creator:
Cagle, Gerald D. & Vela, G. Roland, 1927-
Object Type:
Article
System:
The UNT Digital Library
Physiological Studies on Vitreoscilla stercoraria
In this article, Vitreoscilla stercoraria ATCC 15218 was studied to elucidate some of its physiological characteristics.
Date:
December 1, 1972
Creator:
Mayfield, D. C. & Kester, A. S.
Object Type:
Article
System:
The UNT Digital Library
Survival of Azotobacter in Dry Soil
Article on the survival of Azotobacter in dry soil.
Date:
July 1974
Creator:
Vela, G. Roland, 1927-
Object Type:
Article
System:
The UNT Digital Library
Characterization of components from culture filtrates of Botrytis cinerea which stimulate phaseollin biosynthesis in Phaseolus vulgaris cell suspension cultures
Article on the characterization of components from culture filtrates of Botrytis cinerea which stimulate phaseollin biosynthesis in Phaseolus vulgaris cell suspension cultures.
Date:
1977
Creator:
Dixon, R. A. & Lamb, Christopher J.
Object Type:
Article
System:
The UNT Digital Library
Comparison of Aryl Hydrocarbon Hydroxylase Induction in Cultured Blood Lymphocytes and Pulmonary Macrophages
Article discussing research on a comparison of aryl hydrocarbon hydroxylase induction in cultured blood lymphocytes and pulmonary macrophages.
Date:
November 1977
Creator:
McLemore, Theodore L.; Martin, R. Russell; Toppell, Kenneth L.; Busbee, David L. & Cantrell, Elroy T.
Object Type:
Article
System:
The UNT Digital Library
Effects of growth substances on non-induced and Botrytis cinerea culture filtrate-induced phaseollin production in Phaseolus vulgaris cell suspension cultures
Article on the effects of growth substances on non-induced and Botrytis cinerea culture filtrate-induced phaseollin production in Phaseolus vulgaris cell suspension cultures.
Date:
May 1978
Creator:
Dixon, R. A. & Fuller, K. W.
Object Type:
Article
System:
The UNT Digital Library
The specificity of plant defences
This article discusses the specificity of plant defences.
Date:
January 10, 1980
Creator:
Dixon, R. A. & Lamb, Christopher J.
Object Type:
Article
System:
The UNT Digital Library
Size Fractionation of Metabolically Active Phytoplankton and Bacteria in Two Diverse Lentic Systems
Simultaneous size fractionation of plankton populations associated with NaH^14CO_3 and ^3H-glucose uptake was employed in eutrophic Lake Texoma (Texas and Oklahoma) and oligotrophic Flathead Lake (Montana). Autoradiography was utilized to determine the role of specific microorganisms in community metabolism. Ultraplankton (0.45-10 μm) dominated plankton numbers and metabolic activity in both aquatic systems. Many of the most abundant species were not the most productive, in terms of inorganic C fixation. Rates of heterotrophic uptake of ^3H-glucose were small in comparison to photolithotrophic uptake in both lakes, Photoheterotrophy was more extensive in Flathead Lake, Autoradiographs indicated that bacteria were responsible for observed photoheterotrophy. Oscillatoria sp. exhibited. mixotrophy in Lake Texoma,
Date:
August 1980
Creator:
Ellis, Bonnie K.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Modulation of L-Phenylalanine Ammonia-Lyase by Pathway Intermediates in Cell Suspension Cultures of Dwarf French Bean (Phaseolus vulgaris L.)
Article on the modulation of L-phenylalanine ammonia-lyase by pathway intermediates in cell suspension cultures of dwarf French bean (Phaseolus vulgaris L.).
Date:
December 1980
Creator:
Dixon, R. A.; Browne, T. & Ward, John M.
Object Type:
Article
System:
The UNT Digital Library
Dose Responses for Colletotrichum lindemuthianum Elicitor-mediated Enzyme Induction in French Bean Cell Suspension Cultures
Article on dose responses for Colletotrichum lindemuthianum elicitor-mediated enzyme induction in French bean cell suspension cultures.
Date:
March 1981
Creator:
Dixon, R. A.; Dey, P. M.; Murphy, D. L. & Whitehead, I. M.
Object Type:
Article
System:
The UNT Digital Library
Biosynthesis of Isoflavonoid Phytoalexins: Incorporation of Sodium [1,2-(13)C2] Acetate into Phaseollin and Kievitone
Article on the biosynthesis of isoflavonoid phytoalexins and the incorporation of sodium [1,2-(13)C2] acetate into phaseollin and kievitone.
Date:
June 1982
Creator:
Dewick, Paul M. & Steele, Melanie J.
Object Type:
Article
System:
The UNT Digital Library
Factors Inhibiting Dissociation Of Neisseria gonorrhoeae Cells
The initial studies reported in this dissertation were attempts to induce mutations in those genes which control dissociation in cells of Nei sseria gonorrhoeae. These studies led to an investigation of survival curves of cells grown in liquid media. Instead of survival curves reflecting the diploid nature of gonococci, multiple cell kinetics were observed. It was found that large clumps contained a predominance of cells of the T2 type and that when these clumps were dispersed by DNAase, it appeared that dissociation of T2 was inhibited. The notion of a mechanism of T2 to T4 dissociation being due to genetic transformation was disspelled by these data.
Date:
August 1982
Creator:
Gonzalez, Anthony H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Fungal Antigens and Fungal Disease: An Alkali-Soluble, Water Soluble Antigen from Coccidioides immitis and Coccidioidomycosis
Diagnostic medical mycology has been slow to advance due to a lack of species specific antigens in organisms which cause serious diseases in man. Toward this end, an HPLC analysis was done of the following fungal antigens: histoplasmins HKC-43 and H-42, blastomycin KCB-26, an alkali-soluble, water soluble antigen from Blastomyces dermatitidis (b-ASWS), a coccidioidin prepared from a toluene lysate of the mycelial-arthroconidia phase of Coccidioides immitis, and an alkali-soluble, water-soluble antigen from Coccidioides immitis (c-ASWS). The HPLC survey included size-exclusion chromatography (SEC), ion exchange chromatography (HPIEC), and reversephase chromatography (RP). Resolution was poor with both SEC and HPIEC but was excellent with RP chromatography. The use of RP will allow sufficient separation for further antigenic and structural analysis.
Date:
December 1983
Creator:
Fleming, William H. (William Harold)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Testing and Evaluation of Environmental Fate Models Using Aquatic Microcosms and Three Organic Chemicals
Two compartment (sediment and water) flow-through model ecosystems were constructed to investigate the compartmentalization of different organic chemicals. Lindane, naphthalene, and mirex were pumped into the systems and resultant compartmental chemical concentrations determined. Steady state concentrations were compared to those predicted by two environmental fate models - EXAMS (Exposure Analysis Modeling System) and SLSA (Simplified Lake and Stream Analysis) which were developed by EPA-Athens, Georgia and HydroQual, Inc., respectively.
Date:
December 1983
Creator:
Staples, Charles A. (Charles Allen)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library