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Showing 1 to 20 of 40 for “"Low fertility"”.

  1. Sibship in Low Fertility Settings: A Microsimulation Approach

    Odden, ColinThe Ohio State University2013

    … variation in lifespan sibling availability in low fertility populations. Demographic transition has had profound effects on family structure, shrinking kin networks while extending the duration of kin ties. Siblings are unique among these ties in their duration, degree of shared contexts, and …

    ohiolink Repository record

  2. Characterization of Small Non-Coding RNAs in the Seminal Plasma of Beef Bulls with Predicted High and Low Fertility

    Perkins, Stephanie2016

    … areas of the genome plays a role in male fertility. Piwi-interacting RNAs (piRNAs) are another class of germline-specific non-coding RNAs that form silencing complexes to maintain germline genome integrity. In bovine seminal plasma, piRNAs have not previously been characterized. Thus, the …

    sdstate Repository record

  3. Comparing the Reproductive Climates of Japan, Norway and Italy: A New Way of Looking at the Reasons for Low Fertility Rates

    Graham, Samantha2014

    … this paper hopes to move the discussion of fertility from one that places the primary burden on women to one in which all facets of society are considered when discussing the problem of declining world fertility.</p>

    shu-thes Repository record

  4. Fertility attitudes and behavior: the effects of gender equity on fertility in South Korea

    Yoon, Soo-YeonUniversity of Illinois at Urbana-Champaign2017

    … the roles of gender equity and family in shaping lowest-low fertility. Although low fertility is a heated topic in most advanced societies, conventional approaches to low fertility, such as the second demographic transition theory, have predominantly focused on low fertility in Western countries. …

    uiuc Repository record

  5. The Proverbial Ticking Biological Clock: A Symbolic TMT Perspective on Mate Perception

    Livick, Kendall AtkinsVirginia Tech2014

    … studies have illustrated that women in a high fertility phase within a menstrual cycle show greater preference for masculine faces while performing facial judgment tasks than do women in a low fertility phase or women using hormonal contraception. However, mortality salience has been shown to …

    vt Repository record

  6. Factors affecting the fertility preferences of college females

    Furey, Patricia M.Virginia Polytechnic Institute and State University1972

    … role to include career achievement would depress fertility preferences, most especially for girls aspiring to high-status male careers. That is, individual status rewards would act as reward alternatives to childbearing. Results obtained with a random sample of 147 junior-senior college women …

    vt Repository record

  7. Η ΣΤΑΘΕΡΟΠΟΙΗΣΗ ΤΗΣ ΧΡΩΜΑΤΙΝΗΣ ΤΩΝ ΣΠΕΡΜΑΤΟΖΩΑΡΙΩΝ ΩΣ ΔΕΙΚΤΗΣ ΤΗΣ ΓΟΝΙΜΟΤΗΤΑΣ ΤΟΥ ΣΠΕΡΜΑΤΟΣ

    Ζηκόπουλος, ΚωνσταντίνοςUniversity of Ioannina1989

    … ONE SEMEN CAN CHARACTERIZE EITHER POTENTIAL FERTILITY OR LOW FERTILITY. FROM THE RESULTS OF OUR STUDYWE CONCLUDE THAT WHERE THE CHROMATIN STABILITY OF EJACULATED SPERMATOZOA IS GREATER THAN 70% IT HAS A POSITIVE EFFECT ON FERTILIZATION, WHERE THE CHROMATIN STABILITY IS BETWEEN 50% AND 70% …

    greece Repository record

  8. Adubação orgânica e mineral sobre características produtivas do tomateiro, cultivar Santa Cruz em ambiente protegido.

    CAMPOS, Allan Radax Freitas2014

    … of organic and mineral fertilizer in a Red Yellow Podzolic with high acidity and low fertility levels on some growth characteristics of tomato cultivar Santa Cruz environmental conditions in screenhouse. The experiment was conducted in protected environment (green-house) of DSER / CCA / UFPB, …

    brazil-ufpb Repository record

  9. Long-term Residue and Water Management Effects on Soil Respiration and Soil Aggregate Stability in a Wheat-soybean, Double-crop System in Eastern Arkansas

    Smith, Sharon Faye2016

    … (CT) and no-tillage (NT)] and residue/fertility level (high and low) on soil respiration and aggregate stability in a wheat- (Triticum aestivum L.) soybean [Glycine max (L.) Merr.], double-crop system in a silt-loam soil (Aquic Fraglossudalf) in the Mississippi River Delta region of …

    arkansas Repository record

  10. Soybean and Phialophora gregata interactions: Implications for evaluating resistance to brown stem rot of soybean

    Waller, Robert StephenUniversity of Illinois at Urbana-Champaign2011

    … of soybean media, and (3) the effects of field fertility levels on BSR development on soybean. The inheritance study showed a different genetic control for resistance to BSR than has been previously reported. The relatively large number of intermediate disease reaction types in progeny from …

    uiuc Repository record

  11. Conceptions of collaterality in modern Europe: Kinship ideologies from companionship to trusteeship

    Baker, David JosephUniversity of Illinois at Urbana-Champaign2011

    … families, ties to contemporaries, relatively low fertility, lower socioeconomic status, and ideological universalism. Still other conceptions emphasize line of descent (or ascent) and transmission of symbolic family estate. These kinship orientations support the special interests of religion, …

    uiuc Repository record

  12. The influence of sowing depth, compaction and fertiliser placement on caucasian, subterranean and white clover grown in pots : A dissertation submitted in partial fulfilment of the requirements for the degree of Bachelor of Agricultural Science with Honours at Lincoln University, New Zealand

    Fallow, Amanda E.Lincoln University2002

    … repens L.) was sown on 5 April 2002, into a low fertility soil, in a pot experiment at the Lincoln University glasshouse facilities, Canterbury, New Zealand. Five sowing depths 0-mm (surface sown), 20-mm, 40-mm, 60-mm and 80-mm, each with a compaction layer (80-mm below soil surface), or no …

    lincoln Repository record

  13. Senior housing development in China

    Tang, Tian, S.M. Massachusetts Institute of TechnologyMassachusetts Institute of Technology2015

    … The one-child policy has created a declining fertility rate. At the same time, the life expectancy of people keeps rising. The combination of low fertility and long life spans have moved China towards a rapidly aging society. To prepare for the aging society, the Chinese government has issued …

    mit Repository record

  14. Increasing the overwintering survival of container-grown perennials

    Harris, William KevinVirginia Tech2011

    … two overwintering covers, two fertilizer rates (low or high) and two substrate moisture contents (wet or dry). Covering with either a double layer of Dewitt N-Sulate™ insulation fabric or a double layer of Dewitt N-Sulate™ insulation fabric and a single sheet of 4 mil white polyethylene plastic …

    vt Repository record

  15. Characterization of Phosphatidylserine Expression in Bovine Sperm

    Haines, HannahVirginia Tech2021

    Many factors influence male fertility, and conventional fertility evaluations are not able to reliably identify sub-fertile animals. The overall goal of this work was to explore the expression of phosphatidylserine (PS) on bovine sperm and investigate what factors may impact it, as previous …

    vt Repository record

  16. Biogeography and biosystematics of plum curculio, Conotrachelus nenuphar (Herbst)/Wolbachia interactions

    Zhang, XingVirginia Tech2006

    … NY, VA, FL, and WV): there was a significant low fertility in WV males mated with NY (40%) and VA (29%) females. The Florida population showed a different pattern: FL males have a significantly lower fertility with VA (46%) and WV (37%) females while FL females were compatible with all males …

    vt Repository record

  17. Long-term effects of fire on nitrogen cycling in a broad-leaf savanna, Kruger National Park, South Africa

    Coetsee, CorliDepartment of Biological Sciences2007

    … pools and availability and the maintenance of low fertility conditions. However, previous research in the Kruger National Park (KNP) and elsewhere found conflicting results for the effects of fire on nitrogen pools and transformation rates. The main aim of this study was to gain a better …

    cape-town Repository record

  18. Physical and chemical properties of coarse coal refuse from Southwest Virginia

    Stewart, Barry R.Virginia Tech1990

    … potential acidity and coarse fragment content, low water holding capacity, low fertility, and other problems. Little is known about coal refuse properties, particularly as they relate to revegetation potential. This study was undertaken to determine the physical and chemical properties of …

    vt Repository record

  19. Effects of panicle removal and nitrogen on yield of grain sorghum

    Legwaila, Gabatshele MbonaVirginia Tech1993

    … food crop in Botswana. It is often grown in low fertility, coarse-textured soils. It is a common practice within some ethnic groups in Botswana to remove the primary panicle with the expectation that this will increase the grain yield by promoting tillers. A factorial experiment was conducted …

    vt Repository record

  20. Worlds Apart: Social Mechanisms of Contrasting Fertility in European American and Native American Populations on the Northern Plains

    Bush, Janet Mary

    … study was to explore the relationship between fertility and household economy on Montana's Northern Plains. Low fertility and outmigration in European American communities have led to dramatic depopulation of the region. At the same time, isolated Indian reservations in the area have grown in …

    montana-tech Repository record

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