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 33 for “"life table"”.
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The Effect of Turbidity on the Distribution and Life History of River Zooplankton
… River and its associated wetlands, and used life table experiments to compare the fitness of two Daphnia species in response to turbidity and food levels. Over a three-day period in summer 1996, I sampled 12 sites in the Illinois River and associated backwaters and wetlands to determine …
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ΤΟ ΚΛΙΝΙΚΟ ΦΑΣΜΑ ΤΗΣ ΠΡΩΤΟΓΕΝΟΥΣ ΧΟΛΙΚΗΣ ΚΙΡΡΩΣΕΩΣ (ΜΕΛΕΤΗ ΜΙΑΣ ΣΕΙΡΑΣ 116 ΠΕΡΙΣΤΑΤΙΚΩΝ)
… AND ANALYSIS OF SURVIVAL WAS PERFORMED WITH THE LIFE-TABLE METHOD. STATISTICAL SIGNIFICANCE OF DIFFERENCES IN SURVIVAL WERE TESTED WITH THE LOGRANK TEST (MANTEL-COX). THEFINDINGS OF THE STUDY ARE THE FOLLOWING: 1. PBC MUST NO LONGER BE CONSIDERED AS A RARE DISEASE FOR OUR COUNTRY. 2. A LARGE …
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Infant and under-five mortality in South Africa : perspectives from the 2011 census and the 2012 HSRC Survey
… under-five mortality using the synthetic cohort life table approach.
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Adaptation of an Invasive Cladoceran (Daphnia Lumholtzi) to Temperature
… to different temperatures, I carried out life table experiments with animals isolated from lakes over a latitudinal (temperature) gradient across the US. Isofemale lineages were established from lakes in Texas, Oklahoma Georgia, Missouri, and Minnesota. Fitness measures included survival, …
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African American Mortality: A Biocultural Study of Missouri Cemetery Records
… will reveal discrepancies when compared to life table analyses. While the post-1980 “return migration” of urban African Americans to rural regions is of interest to scholars, the lack of death data needed to study them is often non-existent, often resulting in the exclusion of these …
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Current status of the scale insect fauna of citrus in Tunisia and biological studies on Parlatoria ziziphi (Lucas)
… sour orange) on the development, fecundity and life table parameters (the intrinsic rate of increase (rm), the mean generation time (T0) and the net reproduction ratio (R0)) of the black scale were assessed. From surveys conducted in the main citrus growing regions located in the northern part …
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Population ecology of the red admiral butterfly (Bassaris gonerilla) and the effects of non-target parasitism by Pteromalus puparum
… of the larval host plant Urtica ferox Forst. A life table study showed that egg parasitism by the unidentified scelionid Telenomus sp. was the largest mortality factor for the pre-imaginal stages of B. gonerilla, followed by "disappearance" mortality (predation and dispersal) in the larval …
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Impact of HIV on estimates of child mortality derived using the summary birth history (CEB/CS) Method
… mothers and their children. The choice of model life table does not introduce much bias, especially in estimates of under-five mortality where the absolute bias in most countries was less than 3%.
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Aspects of the ecology of Scolypopa australis (Walker) (Homoptera:Ricaniidae) and its parasite Centrodora scolypopae (Valentine) (Hymenoptera: Aphelinidae)
… slower on blackberry than bracken. Time specific life table analysis showed that parasitism by C. scolypopae was the key factor determining fluctuations in the population of S. australis. The next most important factors were variation in natality and adult loss. Neonate loss was the largest cause …
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Secular Trends in Life Expectancy by Diet Status Among Never Smoking Seventh-day Adventists
<p>To evaluate how life expectancy changed by age and secular time from 1960 through 1988, two cohort studies, the Adventist Mortality Study (AMS, 1960-1985, n = 27,530) and the Adventist Health Study (AHS, 1976-1988, n = 34,192) were combined. The life expectancy of omnivores was compared to …
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How Do Immigrant Older Adults in the United States Fare in Later Life? Examining Differences in Immigrant Status and Life-course Timing of Migration on Late-life Disablement and Mortality
… United States and their experiences with late-life disablement. Specifically, this dissertation examines immigrant status differences in late-life disability among immigrants compared to non-immigrants and investigates how life-course timing of immigration shapes late-life disability among …
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Plague mortality and medieval demography: an osteological analysis of Black Death mass graves and attritional cemeteries from 7-16th century England and Wales
… were estimated and stress markers were recorded. Life table, Kolmogorov- Smirnov and Kaplan Meier analyses were conducted. Those aged 15-24 years, and those with linear enamel hypoplasia present, were substantially over-represented within the mass graves — suggesting these groups were particularly …
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Leaving Parental Homes In Canada: An Examination Of Gender, Family And Culture
… of home-leaving.;The analysis involves the life table and the proportional hazards models, as well as logistic regression, using data from the 1990 General Social Survey of Canada. After identifying as many covariates as possible as of the time of the event (home-leaving), this research …
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Der femoropopliteale P1-Bypass mittels Fluoropassiv - Erfahrungen mit einem neuen alloplastischen Gefäßersatz
… gestellt. Die Auswertung erfolgte nach dem life-table Verfahren, der Vergleich der Durchgängigkeitsraten mittels log rank Test. Ergebnisse: Es traten keine perioperativen Todesfälle auf, die 5-Jahres-Überlebensrate lag bei 75,4% im Gesamtkollektiv. Im Beobachtungszeitraum traten 18 …
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Racialized Patterns Of Inequality In United States Birth Outcomes, 1990-2018
… regression techniques, classic demographic life table methods, and decomposition techniques, this dissertation finds that racialized disparities in educational attainment, exposure to obstetric intervention, and political exclusion all operate to exacerbate and/or maintain long-standing …
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Cost-effectiveness of nebulised ipratropium as adjunctive therapy in acute asthma
… Statistical techniques: 2-way contingency tables for categorical variables, 1-way ANOVA for treatment effects, and life-table analysis of the time till discharge. Results: Records of 279 of the 400 patients entered in the study were suitable for analysis after excluding re-admissions, …
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Biology and ecology of the predatory mite Iphiseius degenerans (Berlese)(Acari: Phytoseiidae)
… scarce. For instance, no records were found on life table parameters and functional responses when the predator was fed the western flower thrips Frankliniella occidentalis (Pergande). Also, there was no information found on the prey preference of the predatory mite. Nevertheless, these …
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Habitat and population dynamics of wolves and blackbuck in Velavadar National Park, Gujarat
… to recover from such catastrophic mortality. Life-table analysis done by aging jaws of dead blackbuck revealed a bimodal mortality pattern for males. Males between the ages of 7 to 9 years were at high risk of wolf predation during the rutting season. A population simulation model using a …
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Health inequalities in New Zealand: an examination of mortality and hospital utilisation trends, with reference to the compression of morbidity hypothesis
… socioeconomic deprivation, and health in later life in New Zealand. It identifies whether expansion or compression of morbidity is occurring at the end of life. It asks if overall morbidity at a population level is likely to increase or decrease in future as life expectancy increases, and if the …
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Life history and physiological ecology of the lizard, Cordylus Giganteus
… Population size and structure remained stable in the study area. Densities ranged from 9 - 11 lizards/ha. The age structure is marked by the low relative abundance of juveniles. Survivorship during the first year varied among years. Mortality was highest during summer months rather than …
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