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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.
11

The incidence and duration of breast feeding among women in the greater metropolitan area of Portland, Oregon

Marshall, Joyce M. 02 May 1983 (has links)
The incidence and duration of breast feeding were determined via telephone questionnaires from a sample of 95 women who delivered healthy infants during the month of September 1982, in the greater metropolitan area of Portland, Oregon. This sample was limited in that the women were married, predominately white, over 25 years of age, and well-educated. According to the literature, these factors have a positive correlation with the incidence and duration of breast feeding. Consequently, the reported values for the incidence of breast feeding in the hospital of 88 percent and the duration of breast feeding for six months of 44 percent is higher than reported values on a national level. However, the average duration of breast feeding by women who had weaned their babies at the time of this survey (6.2 weeks) is consistent with other studies. The information obtained from the questionnaires was used to measure the association between the incidence of breast feeding and the amount of information women received during their pregnancy; the duration of breast feeding and support system(s); and the relationship between the incidence and duration of breast feeding to the social factors of income, education, age, and race. Chi Square was the statistic used to compare the distribution, of responses among the three subgroups: women who breast fed only, formula fed only, or both breast and formula fed. Significant associations were not observed between the incidence of breast feeding and information or between the duration of breast feeding and support system(s). There was, however, an observed significant association between the incidence of breast feeding and the social factor of income. Additional findings revealed that women most likely to breast feed had themselves been breast fed as a baby, had breast fed their other children, and did not smoke cigarettes. Possible explanations for these results are discussed. / Graduation date: 1983
12

Investigation of polymer-modified cement mortars

Reid, Nola L. January 1989 (has links)
No description available.
13

Mechanisms of delayed ettringite formation

Yang, Renhe January 1998 (has links)
No description available.
14

Avaliação da reação do tecido subcutâneo de ratos à implantação dos cimentos MTA e Portland brancos acrescidos de radiopacificadores / Evaluation of the reaction of subcutaneous tissue of rats to implantation of white MTA and white Portland cement with radiopacifiers

Bortoluzzi, Eduardo Antunes 15 February 2005 (has links)
O MTA por apresentar boas propriedades físico-químicas e biológicas é indicado como material retrobturador. O objetivo deste trabalho foi avaliar, microscopicamente, a resposta do tecido subcutâneo de ratos frente à implantação de tubos de polietileno contendo novas formulações desse material: ProRoot MTA®, MTA Branco® contendo dois tipos de radiopacificadores e cimento Portland branco com óxido de bismuto. Foram utilizados 36 ratos (Rattus norvegicus), divididos em 12 animais para cada período experimental. Cada animal recebeu quatro implantes de tubos de polietileno, preenchidos com os materiais recém-espatulados de um lado, e do outro guta-percha (controle). Após 15, 30 e 60 dias os animais foram mortos e os espécimes foram preparados para análise microscópica. Os resultados mostraram inflamação crônica granulomatosa induzida pelos materiais, com intensidade moderada a discreta, e organização e espessamento de uma cápsula fibrosa com o passar do tempo. Os cimentos induziram respostas teciduais semelhantes, mesmo com radiopacificadores diferentes na composição. / Because of its good physicochemical and biological properties, MTA is indicated as a material for retrograde obturations. The aim of this study was to microscopically evaluate the response of the subcutaneous tissue of rats to the implantation of polyethylene tubes containing new formulations of this material: ProRoot MTA®, White MTA® containing two types of radiopacifiers, and white Portland cement with bismuth oxide. Thirtysix rats (Rattus norvegicus) were employed, which were divided into 12 animals for each study period. Each animal received 4 implants of polyethylene tubes filled with the recently prepared materials at one side, and gutta-percha at the other side (control). After 15, 30 and 60 days, the animals were killed and the specimens were prepared for microscopic analysis. The results demonstrated granulomatous chronic inflammation induced by the materials, of moderate to mild intensity, and organization and thickening of a fibrous capsule with time. The cements induced similar tissue responses, despite the presence of different radiopacifiers in their composition.
15

Development of X-ray and neutron diffraction methods for cement research

Jupe, Andrew Charles January 2000 (has links)
No description available.
16

Everything She Does For You

Donnelly, Sara 23 May 2011 (has links)
Everything She Does For You is a collection of original short fiction involving themes of love and loyalty. The stories center on characters living in the fictional town of Eastland, Maine. This collection culminates two years of creative experimentation as a fellow at the University of Miami. The current copy reflects my interest in fabulist and realistic fictions as well as my growing fascination with my state of origin, Maine, and the city in it that I know best, Portland.
17

Concrete hydration, temperature development, and setting at early-ages

Schindler, Anton Karel. January 2002 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.
18

Pervious concrete paste composition a thesis presented to the faculty of the Graduate School, Tennessee Technological University /

Phillips, Jason B., January 2009 (has links)
Thesis (M.S.)--Tennessee Technological University, 2009. / Title from title page screen (viewed on Mar. 3, 2010). Bibliography: leaves 87-91.
19

Optimum sulfate content of Portland cement

Škapa, Radim January 2009 (has links)
No description available.
20

Investigations of Portland cement mortars

Deichler, Ludlow Vanderburg Clark 08 1900 (has links)
No description available.

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