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Articles 181 - 184 of 184
Full-Text Articles in Life Sciences
In Vitro And In Vivo Techniques For Screening New Natural Product-Based Fungicides For Control Of Strawberry Anthracnose, Maritza Abril
In Vitro And In Vivo Techniques For Screening New Natural Product-Based Fungicides For Control Of Strawberry Anthracnose, Maritza Abril
Dissertations
Seven plant pathogenic fungi (Botrytis cinerea, Colletotrichum acutatum, C. fragariae, C. gloeosporioides, Fusarium oxysporum, Phomopsis obscurans, and P. viticola) valuable in screening fungicide efficacy were tested. Optimal and reproducible conditions for germination of these selected fungi were established by incorporating Roswell Park Memorial Institute 1640 (RPMI) as a medium of known composition and washing conidia to remove innate germination inhibitors. This step reduced average fungal germination times between 3.5 h and 21.2 h. The natural product-based fungicide, sampangine, seven sampangine analogs (4-bromo-sampangine, 4-methoxysampangine, benzo[4,5]sampangine, liriodenine Mel AMC-XIII-103, onychine, cryptolepine, and liriodenine CDH-II-37), plus seven conventional fungicides (benomyl, captan, cyprodinil, fenbuconazole, …
Reverse Recruitment: Activation Of Yeast Genes At The Nuclear Periphery, Terry Marvin Haley
Reverse Recruitment: Activation Of Yeast Genes At The Nuclear Periphery, Terry Marvin Haley
Dissertations
The regulation of genes at the nuclear periphery is an evolutionarily conserved phenomenon in eukaryotes. The reverse-recruitment model of transcriptional activation postulates that genes are activated by moving to and contacting transcription machinery located at subnuclear structures. In Saccharomyces cerevisiae it has been reported that this platform for gene regulation may reside at the nuclear periphery. To test this hypothesis, I utilized a GFP-gene tagging technique, which uses LacI-GFP to visualize a tandem array of its DNA-binding sequence, to monitor localization ofSUC2 and GALL I found that both genes preferentially localized to the nuclear periphery when transcriptionally active. By developing …
Use Of Monoclonal ∆-9-Tetrahydrocannabinol Antibodies Chemically Bound To A Polystyrene Surface Using Glutaraldehyde For The Purpose Of Extracting ∆-9-Tetrahydrocannabinol And ∆-9-Tetrahydrocannabinol Carboxylic Acid From Postmortem Whole Blood Samples For Analysis By Gas Chromatography Mass Spectrometry, Thomas Sidney Pittman
Dissertations
Quantitations of drugs and their respective metabolites in postmortem blood samples using gas chromatographic instrumentation is a primary analytical practice used to determine if drugs played a role in or were the cause of a victim's death. Postmortem blood samples often prove difficult to work with due to interfering substances formed during the putrefaction process. Attempts to eliminate interfering substances with present day extraction methods can be time-consuming, costly and often ineffective when dealing with drugs that exhibit toxicity or impairment at very low concentrations. This study was conducted using monoclonal antibodies chemically bound to a polystyrene surface to extract …
The Total And Specific Dimensions Of Self Concept Related To Female Participation In Collegiate Athletics, Dane Bradford Beary
The Total And Specific Dimensions Of Self Concept Related To Female Participation In Collegiate Athletics, Dane Bradford Beary
Dissertations
The purpose of this study was to determine if differences existed between female collegiate sport participation and non-participation, as well as female collegiate individual and team sport participation on the total, the specific dimensions of self-concept and supplementary scores as rendered by the Tennessee Self-Concept Scale Second Edition TSCS:2 (Fitts & Warren, 1996). A subject pool of N=190 participants were used. All subjects included in data analysis were female undergraduate students. A multivariate analysis of variance (M ANOVA) was utilized to evaluate effects of sports participation versus non-participation and individual versus team sports participation on self-concept. On sports participation versus …