Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 751 for “"Fertilization"”.
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In vitro fertilization of rabbit ova and oviductal influences on fertilization
Thesis (M.S.)--Michigan State University. Dept. of Physiology, 1971
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Ocean fertilization : ecological cure or calamity
… to test Martin's iron hypothesis, iron fertilization experiments are now used as powerful tools to study the world's oceans. Some oceanographers are concerned that these experiments are catapulting ocean science into a new era. The vast stretches of ocean play a key role in the global …
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Studies on Fertilization in Vitro in Mammals
… the sperm-egg interaction: (a) during the normal fertilization process; and (b) when the fertilization process was modified chemically and physically. Chemical modification of the fertilization process entailed artificially fusing the sperm to the egg, whereas physical modification entailed …
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Response of Leguminous Crops to Borax Fertilization
Made available in DSpace on 2014-12-04T20:16:50Z (GMT). No. of bitstreams: 1 0015261.pdf: 8185076 bytes, checksum: 0956ef353bd093035d8ccc63e7425389 (MD5) Previous issue date: 1955
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Soybean Yield and Plant Response to Phosphorus Fertilization
<p>Phosphorus (P) is a key limiting nutrient for soybean production in South Dakota. Soil tests have been used as a baseline indicator for plant available P and fertilizer recommendations for over a century. Plant nutrient analysis may be used to complement a soil test as a way to validate …
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Investigating the duplication and evolution of essential fertilization proteins
… proteins to neofunctionalize. Genes encoding fertilization proteins are also some of the most rapidly evolving in the genome, which could enable the neofunctionalization of duplicated domains within these genes. Chapter 1 of this dissertation reviews multiple well known gene families (Izumo, …
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Role of oviduct glycans in sperm binding and fertilization
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01
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An economic analysis of nitrogen fertilization regimes in Virginia
… farmers' income risk is essential when making fertilization recommendations. This study on Richmond county, uses the EPIC model and stochastic dominance analysis to compare four different fertilization regimes at the field and farm level; and then uses a sensitivity analysis to examine how the …
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Nitrogen fertilization, nitrogen and nicotine content of burley tobacco
Field experiments were conducted to study the effect of rates and time of nitrogen application on growth, nitrogen and nicotine contents of leaves and stalks of Burley 21. Rates of nitrogen used were 0, 75, 150 and 225 pounds per acre. Nitrogen was applied as preplant and/or as post plant …
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Understanding Attitudes toward In-Vitro Fertilization and Support for Less Restrictive In-Vitro Fertilization Policies: The Influence of Family, Information Processing, Media, and Science
The emergence of in-vitro fertilization (IVF), a reproductive technology, has allowed infertile women and couples the opportunity to conceive children and form much desired families. Increased media exposure and political attention have aroused public concern and controversy, especially within the …
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Microsurgical Fertilization of Mammalian Eggs: An Assessment of Clinical Utilization
<p>Microsurgical fertilization is the technique in which a spermatozoon or sperm nucleus is injected into the cytoplasm of an egg. To establish a foundation for the use of microsurgical fertilization as a means of treating infertility, this study evaluated the procedure in hamster and human eggs. …
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Potato growth and productivity under different biological nitrogen fertilization strategies
A utilização de resíduos orgânicos favorece a melhoria da sustentabilidade dos sistemas agrícolas. No entanto, a sua utilização no cultivo da batata é carente de informações quantitativas sobre o seu manejo no fornecimento de nitrogênio, eficiência de utilização de N e do retorno econômico. Além …
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Transcript Profiling of Soybean Seed Development From Fertilization to Maturity
… seed development, from just a few days after fertilization to the stages of seed fill, maturation, and desiccation. Gene expression over five stages from four to twenty-four days after fertilization in whole seeds was measured using microarrays containing 38,400 soybean cDNAs. Data were …
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Switchgrass as an Energy Crop: Fertilization, Cultivar, and Cutting Management
… selection, cutting management, and optimizing N fertilization. Four cultivars of switchgrass were evaluated under two cutting regimes at eight locations within KY, NC, TN, VA, and WV in 2000 and 2001. Harvests were made once (in early November) or twice (midsummer and early November). Biomass …
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Nitrogen and phosphorus fertilization for efficient corn production in Virginia
Traditional com fertilization methods of broadcasting N fertilizer, and applying P fertilizer to soils testing high to very high in plant-available P, can be inefficent. Experiments were conducted at several locations in Virginia to evaluate if band applications of N fertilizer are more efficient …
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Loblolly pine response to drainage and fertilization of hydric soils
Loblolly pine (<i>Pinus taeda</i>) productivity on wet flats of the lower coastal plain of Virginia is largely affected by the presence of high water tables and infertile soil. Site preparation by bedding and ditching can alleviate high water tables and increase aerated soil rooting volume, …
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Zinc ion fluxes on the pathway to mammalian sperm fertilization competency
… of understanding mechanisms leading to sperm fertilization competency and management of semen storage. Little focus has been placed on other divalent ions, including zinc ion (Zn2+). Further, the ultimate maturation event preparing mammalian spermatozoa for fertilization, sperm capacitation, …
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Status kemahraman anak hasil in-vitro fertilization melalui rahim orang lain
… memiliki keturunan, yaitu dengan cara in-vitro fertilization melalui rahim orang lain. Adapun permasalahan yang muncul dari perkembangan teknologi ini yakni bagaimana status kemahraman anak hasil in- vitro fertilization melalui rahim orang lain terhadap ibu yang mengandung dan melahirkan. …
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