Thesis (M.S.)--Montana State University--Bozeman, 2004. / Typescript. Chairperson, Graduate Committee: Daniel P. Heil. Includes bibliographical references (p. 124-129).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.

Thesis (M.S.)--University of Nebraska at Omaha, 2005. / Includes bibliographical references (leaves 84-89). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

In this dissertation, I establish a theoretical and empirical critique of modern forms of environmentally sustainable technology. Theoretically, I critique the application of environmentally sustainable technologies in modern capitalist economies using the treadmill of production theory and metabolic rift theory. I also expand on these theories by developing an analytical concept – the displacement paradox. The displacement paradox refers to a counterintuitive phenomenon, where green technologies expand rather displace traditional production processes. Empirically, I assess the assumptions of the displacement paradox by analyzing the relationship between organic farming and agrochemical application, organic farming and greenhouse gas emissions, organic farming and water pollution, and alternatively fueled vehicles and total fuel consumption per vehicle. In each of these cases, I find that green technology (in the form of organic farming and alternatively fueled vehicles) is not displacing traditional production processes, and instead expanding alongside them. I argue that these findings are a result of the broader socioeconomic structure that green technology is produced under. Specifically, I contend that because current socioeconomic systems are established around traditional production processes, to substantially reduce environmental degradation, green technologies must operate as a social and technological counterforce to traditional production processes. Currently, the green technologies explored in this dissertation act as a technological alternatives to traditional production processes, making them commodities that sustain the current structure of social relations, as opposed to social and technological counterforces to environmentally hazardous forms of production. I conclude that in order for green technologies to successfully reduce environmental degradation, they must be established under social conditions that support their use over traditional production processes.

The purpose of this study was to compare the relationship between immersion running and treadmill running through the measurement of cardiorespiratory parameters. Sixteen subjects completed two exercise protocols to exhaustion. The treadmill running protocol was initiated at 3.08 m*s-l and increased a 0.22 m*s-l every sixty seconds. The immersion running protocol utilized an immersion running Ergometer (IRE). The IRE is similar to a tethered swim machine. The initial weight was set at 1 kg and Increased a 1/2 kg every sixty seconds. Heart rate (HR), oxygen consumption (V02), ventilatory equivalent (VE/V02), and minute ventilation (VE) were determined at ventilatory threshold and at maximal effort, HR, V02, VE/V02 and VE were analyzed by MANOVA (RM). Tidal volume and frequency of breathing were collected for four subjects at ventilatory threshold and at maximal effort (no statistical analysis). Two subjects who had completed the initial exercise protocols volunteered for a follow up study of blood flow distribution testing (no statistical analysis). These subjects were injected with Tc-99 2-methyloxy isobutyl isonitrlle at ventilatory threshold during immersion and treadmill running. Imaging was performed with a Selmans Gamma Camera at the UBC Dept. of Nuclear Medicine. V02 and HR at ventilatory threshold and maximal effort were significantly lower (P < .05) during immersion running. VE/V02 was significantly greater at maximal effort during immersion. Minute ventilation was unaffected by immersion, however, there was a trend towards a smaller tidal volume and greater frequency of breathing. The blood flow distribution data varied considerably partially between subjects. The significant drop in V02 at maximum effort and at ventilation threshold during immersion running may be accounted for by changes in muscle mass recruitment, muscle fibre type recruitment, recruitment pattern and state of peripheral adaptation (muscular). A lower heart rate during immersion may be due to increases in intrathoracic blood volume. The trend towards a higher breathing frequency and lower tidal volume during immersion running may be due to the increased effort to breath caused by hydrostatic chest compression. The significant increase in VE/V02 at maximal effort during immersion running was due to the significant drop in V02. It may be concluded that immersion running causes significant changes in cardiorespiratory parameters at ventilatory threshold and at maximal effort. Research is needed to investigate the significance of the changes. / Education, Faculty of / Curriculum and Pedagogy (EDCP), Department of / Graduate

Orientador: William Dias Belangero / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas / Made available in DSpace on 2018-08-07T16:51:12Z (GMT). No. of bitstreams: 1 CamargoFilho_JoseCarlosSilva_D.pdf: 2089342 bytes, checksum: 98e83cf09fcabd91298418b119d182a5 (MD5) Previous issue date: 2006 / Resumo: O objetivo desse estudo, foi investigar qual o efeito produzido pela corrida em esteira rolante não inclinada, durante uma hora diária (cinco dias por semana), por 15, 30 e 60 dias, sobre a cartilagem hialina do joelho de ratos. Foram utilizados 30 animais, divididos em seis grupos, sendo três experimentais (GE), com cinco animais em cada grupo, submetidos à esteira correndo 585 metros, durante 60 minutos por sessão, por cinco dias por semana, e três grupos controle (GC), com cinco animais em cada grupo, não submetidos ao treinamento físico. Os animais do grupo experimental foram sacrificados após 15 (GE-1), 30 (GE-2), e 60 (GE-3) dias de seguimento. Dos 15 animais do grupo controle foram selecionados aleatoriamente sete animais, sendo dois do grupo de 15 dias e de 30 dias e três do grupo de 60 dias para as análises histológicas por microscopia óptica convencional (côndilo lateral do fêmur direito), pela lupa estereotáxica (côndilo lateral do fêmur esquerdo) e pela termogravimetria (côndilo medial do fêmur direito), segundo critérios da International Cartilage Repair Society (2002), modificado. Essas avaliações foram feitas comparando-se o grupo experimental com o grupo controle quanto à desorganização celular, presença rara ou freqüente de ¿cluster¿, mitoses, mensuração da espessura da cartilagem hialina, contagem do número de condrócitos, quantificação do conteúdo de água e aspecto da superfície articular analisadas com 16x e 32x de aumento. Todos os dados obtidos nos grupos controle e experimental foram comparados entre si utilizando-se testes não paramétricos (Prova U de Mann Whitney e teste de Kruskal Wallis) considerando-se significativo os valores de p iguais ou menores do que 0,05. Do ponto de vista histológico houve maior desarranjo celular (p=0,01), maior número de mitoses (p=0,02), maior número de condrócitos (p=0,003) e diminuição da espessura da cartilagem hialina (p=0,01) entre o controle e os animais do grupo de 60 dias. Houve tendência ao aumento do conteúdo da água no grupo de 60 dias (p=0,09) assim como redução da espessura da cartilagem e alterações da forma da superfície articular em relação aos demais grupos em todos os côndilos observados com 60 dias. Conclui-se que a atividade na esteira rolante utilizada durante 60 dias cinco dias por semana, uma hora por dia com percurso de 585 metros produziu alterações degenerativas na cartilagem hialina do côndio lateral do joelho de rato / Abstract: The effects of treadmill running on the knee hyaline cartilage was studied in rats. Thirty rats were divided in to six groups (five animals in each one). Three groups were used as control and three of them ran on the treadmill one hour a day, five days/week, for 15, 30 and 60 days. After this the animals were sacrificed. The hyaline cartilage was studied by optical microscopy (staining HE), by estereotaxic magnifying glass (magnified in 16 and 32X) and by Fourier transform infrared imaging spectroscopy. These analyses were done comparing the control group with the running group, and among the running groups with different times of exercises. In the histological analysis the grade of cellular organization in the layers of the cartilage, the frequency of the clusters and the mitoses and the number of chondrocytes was considered. The measurement of the thickness of the cartilage was done. The quantity of the water in the cartilage was evaluated by the reduction of the mass by evaporation in to 150oC, following the modified International Cartilage Repair Society score (2002). All results were analyzed by non-parametric tests, using Mann Whitney and Kruskal Wallis tests, with p < = 0,05. It was observed in histological analyses that the groups with 60 days of exercise presented cellular layers more disorganized (p=0,01), a higher number of mitoses (p=0,02) and chondrocytes (p=0,003), with hyaline cartilage thinner than the other groups (p=0,01). Besides this, there was a tendency of the 60-day group to have an increase of water content (p=0,09). The examination by magnifying glass showed that the hyaline cartilage was reduced and presented abnormalities on their surfaces. It was concluded that the exercise done by the rats on the treadmill over 60 days produced degenerative signs in the knee hyaline cartilage / Doutorado / Pesquisa Experimental / Doutor em Cirurgia

Thesis (Ph. D. (Tshivenda)) --University of Limpopo, 2016 / This study examined Tshivenḓa euphemisms from a socio-pragmatic perspective within a framework of Politeness and Indirectness Communicative theories. According to Brown and Levinson (1987), Politeness Theory describes politeness as showing concern for people’s ‘face’ needs where ‘face’ means one’s public self-image. In terms of the Indirectness Communicative Theory, euphemism is a face saving mechanism which emphasizes mutual cooperation in a conversation. Euphemisms are described as substitutions of agreeable or inoffensive expressions for ones that may offend or suggest something unpleasant. They are words with meanings or sounds that are thought, somehow, to be nicer, cleaner or more elevated and they are used as substitutes for words deemed unpleasant, crude or ugly in sound or sense. The study adopted a descriptive and exploratory design within a qualitative research approach, based on the view that qualitative research aims at explaining complex phenomena by means of verbal description rather than testing hypotheses with numerical values. Furthermore, primary data were elicited from 25 participants of different ages, genders, educational levels, social status and occupations who are native speakers of the Tshivenḓa language by means of semi-structured interviews. Since this study involved working with humans, all ethical aspects were ensured. The study, which investigated the use of Tshivenḓa euphemisms, was conducted in seven social domains in Venḓa in the Vhembe District: local courts, churches, homes, hospitals, girls in seclusion, schools and electronic media. The study’s findings show evidence of the use of Tshivenḓa euphemisms in these various domains. However, the court domain seems not to use many euphemisms due to the fact that clear communication is required there; for two parties in a case to understand what is being said during the proceedings the use of roundabout indirect language is avoided – the courts believe in calling ‘a spade, a spade.’ Through the careful analysis of euphemisms, the study’s findings revealed that euphemisms have both positive and negative effects on language, including Tshivenḓa. Some of the positive effects of euphemisms revealed by this study include the ability to avoid directly naming what is deemed unpleasant; they make the language sound more v literary; and they allow people to discuss touchy or taboo subjects with ease. However, the findings also suggested that euphemisms may be disrespectful; they could hinder clear communication; they are deceptive; and they may lead to miscommunication and general confusion. Based on the findings of the study, it is recommended that the use of euphemisms in Tshivenḓa language should be reinforced in all social domains in order to enhance politeness; preserve the public self-image of the participants in communicative exchanges; and facilitate harmonious interpersonal relationships. It is also recommended that further study be undertaken to identify other factors that may affect the use of euphemisms in Tshivenḓa from other perspectives. Key concepts: Politeness; Euphemisms; Treadmill; Taboo; Face work

No description available.

No description available.

No description available.