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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
171

Zdravotní rizika odkladu rodičovství do vyššího věku / Health risks of childbearing postponement

Vlachová, Tereza January 2017 (has links)
This diploma thesis focuses on the issue of women delaying pregnancy and parenthood to later in life. The aim of this thesis is to map out the health risks related to pregnancies in mothers who are over 35 years old, to find out the reasons for the later in life pregnancy and whether women realize the health risks associated. The thesis describes the health risks resulting from pregnancies in older women at the time of the birth and using the method of linear regression to analyze the dependence of the mother age of 35 or higher on the low birth weight of the live birth. Further, the issue of postponing pregnancy and motherhood is examined from women's point of view in more detail through the method of semistructured interviews, especially the reasons for delaying pregnancy and information about health risks. The results show that with women, who become pregnant at an older age, there is a certain increase in health risks; however, generally women are not very well informed about these complications. Keywords: fertility, fertility timing, health risks
172

How does education change the relationship between fertility and age-dependency under environmental constraints? A long-term simulation exercise

Striessnig, Erich, Lutz, Wolfgang 20 February 2014 (has links) (PDF)
Background: When asked what a desirable fertility level for populations might be, most politicians, journalists, and even social scientists would say it is around two children per woman, a level that has been labelled by demographers "replacement-level fertility." The reasons given for considering this level of fertility as something to aim at usually include maintaining the size of the labour force and stabilizing the old-age-dependency ratio. Objective: In this paper, we scrutinize this wide-spread view by introducing education in addition to age and sex as a further relevant source of observable population heterogeneity. We consider several criteria for assessing the long-term implications of alternative fertility levels and present numerical simulations with a view on minimizing the education-weighted total dependency ratio and complement this with the goal of reducing the amount of greenhouse gas emission in the context of climate change. Methods: We perform thousands of alternative simulations for different fertility levels (assumed to be constant over time) starting from empirically given population structures and derive the rate of fertility which yields the lowest level of our education-weighted dependency ratio. We study the sensitivity of our results to different parameter values and choose to focus on the actual populations of Europe and China over the course of the 21st century. Results: The results show that when education is assumed to present a cost at young age and results in higher productivity during adult age, then the fertility rate that on the long run keeps dependency at a minimum turns out to lie well below replacement fertility both in Europe and in China under a set of plausible assumptions. The optimal fertility level falls even lower when climate change is factored in as well. Conclusions: We conclude that there is nothing magical or particularly desirable about replacement level fertility. (authors' abstract)
173

Är det för sent nu? : En litteraturöversikt om fertila kvinnors erfarenheter av att få information om fertilitetspåverkan av cancerbehandling / Is it too late now? : A literature review about fertile women’s experiences of receiving information about the effect on fertility of cancer treatment

Edfors, Anna January 2016 (has links)
Background: Fertile women that are about to undergo cancer treatment do not receive adequate information about fertility and fertility preservation. Not to have been able to make an active choice about undergoing fertility preservation may cause a suffering for these women. Purpose: To describe which experiences young women with cancer have of the information given about fertility and fertility preservation measures prior to the cancer treatment with regards to disease-suffering, care-suffering and life-suffering. Method: Literature review of qualitative and quantitative research. Results: Eight subcategories based on the three main categories disease-suffering, care-suffering and life-suffering were identified. Disease-suffering: (1) Anxiety and (2) Uncertainty. Care-suffering: (3) Attitudes and (4) Lack of information. Life-suffering: (5) Relations and Other social factors, (6) Psychological illness, (7) Longing for children and (8) Quality of life. Conclusion: Various measures are needed to ensure women’s right to information about fertility prior to cancer treatment in order to diminish disease-suffering, care-suffering and life-suffering. Caregivers need to talk with women about fertility related problems, both preventively and for healing purposes. Clinical significance: A clear and safer information policy is needed on fertility and fertility preservation for patients about to undergo cancer treatment.
174

Virological examination of uteri from cows with low fertility using egg embryo and cell culture methods

Lukert, Phil D. January 1961 (has links)
Call number: LD2668 .T4 1961 L85
175

Soil characteristics in relation to crop response in Hong Kong

Lin, Yang-chung., 林仰中. January 1971 (has links)
published_or_final_version / Botany / Master / Master of Science
176

Places, paths and persons : the landscape of kinship and history in southern Manggarai, Flores, Indonesia

Allerton, Catherine Lucy January 2001 (has links)
What is the connection between people and the landscape that surrounds them? How do changes in that landscape affect social life? This study of a dual-sited village community in southern Manggarai (eastern Indonesia) argues that places and pathways are crucially implicated in the constitution of persons and social relationships. Manggarai life takes place within a complex and contested 'landscape' of kinship and history, in which state policies and religious conversion are leading people to reinterpret traditional notions of growth, fertility and the land. In considering this landscape, the study connects literature on the southeast Asian 'House' with the analysis of transformative journeys, and descriptions of village layout and sacred geography with the ethnography of family intimacy. Rooms are shown to be central to the constitution of households and notions of siblingship, whilst ordinary houses are egalitarian collections of rooms, and sites of ritual remembering. Clan identity is embodied in the drum house, but the significance of this 'House' as a social institution is changing under the influence of state cultural politics. Marriage is conceptualised as creating 'paths' of relatedness, and individual alliance connections are maintained by emotional journeys along these paths. Within origin villages, named fields and sacred, stone platforms are potent signs both in and of history, but their absence in recently settled villages contributes to the ritual 'emptiness' of these sites. History is also revealed in the landscape through topogenies that relate ancestral journeys from place to place, and through the growth of seedling villages. However, recent histories have created new interpretations of this landscape. In particular, people engage with their community's division between a highland site and a lowland, satellite village by 'swinging' between the power of 'the outside', and the authority of the centred, ancestral interior.
177

Angiotensin II in male reproduction

O'Mahony, Orla Ann January 2001 (has links)
No description available.
178

Sperm-egg interaction in birds : assays and mechanisms

Robertson, Laura January 1999 (has links)
No description available.
179

In vitro studies on equine gametes

Zhang, John J. January 1991 (has links)
No description available.
180

Stressors & LH secretion in the ewe

Smart, Darren January 1992 (has links)
No description available.

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