8 research outputs found
Horizontal resistance insolanum tuberosum to colorado potato beetle (leptinotarsa decemlineata say)
No full textEffects of cardiac rehabilitation with and without meditation on myocardial blood flow using quantitative positron emission tomography: A pilot study.
No full textBACKGROUND: Psychosocial stress is recognized as a risk factor for coronary heart disease (CHD). High rates of CHD in African-Americans may be related to psychosocial stress. However, standard cardiac rehabilitation (CR) usually does not include a systematic stress-reduction technique. Previous studies suggest that the Transcendental Meditation (TM) technique may reduce CHD risk factors and clinical events. This pilot study explored the effects of standard CR with and without TM on a measure of CHD in African-American patients.
METHODS: Fifty-six CHD patients were assigned to CR, CR + TM, TM alone, or usual care. Testing was done at baseline and after 12 weeks. The primary outcome was myocardial flow reserve (MFR) assessed by
RESULTS: For 37 patients who completed posttesting, there were MFR improvements in the CR + TM group (+20.7%; ES = 0.64) and the TM group alone (+12.8%; ES = 0.36). By comparison, the CR-alone and usual care groups showed modest changes (+ 5.8%; ES = 0.17 and - 10.3%; ES = - 0.31), respectively. For the combined TM group, MFR increased (+ 14%, ES = 0.56) compared to the combined non-TM group (- 2.0%, ES = - 0.08).
CONCLUSIONS: These pilot data suggest that adding the TM technique to standard cardiac rehabilitation or using TM alone may improve the myocardial flow reserve in African-American CHD patients. These results may be applied to the design of controlled clinical trials to definitively test these effects.
TRIAL REGISTRATION: ClinicalTrials.gov registration # NCT01810029
Giving Mom a Break: The Impact of Higher EITC Payments on Maternal Health
No full textThe 1993 expansions of the Earned Income Tax Credit created the first meaningful separation in the benefit level for families based on the number of children, with families containing two or more children now receiving substantially more in benefits. If income is protective of health, we should see improvements over time in the health for mothers eligible for the EITC with two or more children compared to those with only one child. Using data from the Behavioral Risk Factors Surveillance Survey, we find in difference-in-difference models that for low-educated mothers of two or more children, the number of days with poor mental health and the fraction reporting excellent or very good health improved relative to the mothers with only one child. Using data from the National Health Examination and Nutrition Survey, we find evidence that the probability of having risky levels of biomarkers fell for these same low-educated women impacted more by the 1993 expansions, especially biomarkers that indicate inflammation.
Desenvolvimento de sistema-protótipo de sinterização seletiva a laser, visando a obtenção de componentes com gradientes funcionais
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.Vários processos de produção são utilizados para obtenção de objetos, muitos destes impondo restrições quanto à geometria de construção e à seleção de materiais. Visando diminuir estas restrições, diversas pesquisas vêm sendo desenvolvidas para tornar a produção de objetos mais rápida e eficiente, assim como diminuir o tempo de projeto. Uma saída encontrada nos últimos anos é a utilização de tecnologias de prototipagem rápida para a produção de objetos a partir de um arquivo CAD. Alguns processos de prototipagem rápida permitem a produção de objetos e ferramentas. Entre eles, destaca-se o processo de sinterização seletiva a laser, que produz peças e ferramentas sinterizando materiais em pó. Apesar de ser possível a construção de peças em uma grande variedade de materiais, os equipamentos comerciais ainda não são capazes de fabricar os assim chamados componentes com gradientes funcionais (FGM), ou seja, objetos com variações graduais de composição e microestrutura e por conseqüência de propriedades. O objetivo deste trabalho é a fabricação de um protótipo de um equipamento de sinterização seletiva a laser capaz de produzir peças com gradientes funcionais. O projeto do protótipo foi dividido em projeto informacional e projeto conceitual e projeto preliminar, por se tratar de uma tecnologia com desenvolvimento recente. Foram construídos corpos de prova em poliamida/grafite com gradiente funcional no protótipo desenvolvido para avaliar os princípios de solução encontrados no projeto conceitual. Os resultados mostraram a existência de variação micro-estrutural e de propriedades nos corpos de prova, comprovando a possibilidade de fabricar componentes com gradientes funcionais (FGM) no equipamento desenvolvido. Some processes of production are used for object attainment, many of these imposing restrictions to the geometry of construction and the selection of materials. Aiming at to diminish these restrictions, diverse research comes being developed to transform the object production faster and efficient, as well as, to diminish the project time. An joined exit in recent years is the use of technologies of Rapid Prototyping for the object production from an archive CAD. Some processes of Rapid Prototyping allow to the production of objects and tools. Among them the process of selective sintering is distinguished the laser, that produces parts and tools sintering material in dust. Although to be possible the construction of parts in a great variety of materials, the commercial equipment not yet is capable to manufacture thus the component calls with functional gradients (FGM), that is, objects with gradual variations of composition and microstructure and for consequence of properties. The objective of this work is the manufacture of an archetype of an equipment of selective sintering the laser capable to produce parts with functional gradients. The project of the archetype was divided in informational design and conceptual design and preliminary design, for if dealing with a technology with recent development. Bodies of test in polyamide/graphite with functional gradient in the developed archetype had been constructed to evaluate the found principles of solution in the conceptual project. The results had shown to the existence of micron-structural variation and properties in the test bodies proving the possibility to manufacture components with functional gradients (FGM) in the developed equipment
A study of some personality correlates of androgyny among saints and artists
No full textNot Availabl
Women's lives in the U.S.-Mexico borderlands and their experiences with the 'capacitar practices' for transforming trauma: an embodied enquiry.
No full textThe purpose of this embodied phenomenological inquiry was to explore the impact of the so-called Capacitar Body-Mind-Spirit Practices Training for the transformation of individual and community trauma. A general philosophical framework of transpersonal psychology, particularly drawing on the concept of interrelatedness, has been implemented. This research took place in the U.S.-Mexico borderlands with 14 female co-researchers (Mexican, Mexican-American, Mayan, White American) who live in the twin cities of El Paso (Texas, U.S.) and Ciudad Juárez (Chihuahua, Mexico), who were thus exposed to the constant threat of lethal violence and so-called femicide, to discrimination and the socioeconomic problems that are peculiar to this region. The women’s embodied experiences of change as a result of the Capacitar Training were investigated with semi-structured multiple interviewing multilingually (English / Spanish / Mayan). Data analysis procedures combined imaginative variation and embodied interpretation that resulted in a general meaning structure with its variations. The contribution to knowledge made by the phenomenological results consists of the confirmation of past research on the impact of the Capacitar Training that showed the potential of the body-mind-spirit practices for transforming trauma with culturally and spiritually diverse individuals. The most significant research findings of the present study suggest that: (1) the majority of the co-researchers’ experiences of bodily change through body-mind-spirit practices initiated further integration of past negative (traumatic) and / or positive experiences in an embodied way, including interrelatedness to spirituality, culture and nature; (2) the initial bodily felt shift led to the co-researchers’ desire for more change; (3) the experiences of change were independent of the cultural or spiritual background of the co-researchers; (4) a desire to support others’ change emerged for the co-researchers based on their own experiences of improvement; and (5) ambiguity arose for a minority of co-researchers in the beginning of the training related to cultural and religious barriers, and self esteem issues; and at the end of the Capacitar Training linked with the question of commitment to time and to the engagement with the practices. To enhance an embodied understanding of the phenomenological results, biographical information from the co-researchers’ life experiences related to the borderlands had been compiled during the interviews, which mirrored the body of knowledge on issues in the U.S.-Mexico borderlands and has been presented as a cultural-spiritual narrative composite. Furthermore, evaluative information about the co-researchers’ experiences of the conveyance of the Capacitar Training has been synthesized, adding their critical reflections about the conduction and the further development of the Capacitar approach
Virginity matters: power and ambiguity in the attraction of the Virgin Mary
No full textThis thesis seeks to account for virginity as the source of Mary's power to attract. The point of departure is the syncretistic culture of the classical world. Here, patristic use of Old Testament typology recognises the distinctive work of grace in Mary's virginity, thus allowing it to become the determining quality by which her experience is subsequently perceived and universalised. The thesis divides its exploration into the three categories by which Mary is portrayed in the gospels - woman, spouse, mother - concluding its investigation with the end of the nineteenth century and its new understanding of human identity in gender and sexuality. In each category the thesis attempts to identify ways in which the attraction of virginity has functioned through ambiguity (Mary as virgin and mother, mother and spouse of her son) as a positive quality of potency and freedom, rather than as a strictly biological human condition with negative association in contemporary culture. In order to assess the extent of Mary's attraction in periods that lacked the modern forms of articulating self-awareness, the thesis has considered the fabric of devotional practice in religious texts, art, drama and ritual, seeking to allow the perceptions of earlier periods of history (a medium in itself) to challenge our own. As expressions of attraction to Mary, these media have yielded an insight into the power of virginity as a statement of paradisal, heavenly life accessed by grace through male and female human experience. They have also shown virginity to be a source of power that can be exploited for political ends. Finally, the thesis suggests that the power of Mary's virginity has been subversive and liberating in Church and society, thus indicating its neglected significance as a statement about the ambiguity of our nature as human, gendered, and sexual beings
Resistencia a la corrosión y al desgaste de recubrimientos nanoestructurados de Zirconia (ZrO2) – Plata (Ag) y/o Alúmina (Al2O3) obtenidos con técnica de “Sputtering” reactivo con magnetrón desbalanceado
No full textIn this work, the effect of doping materials (alumina and / or silver) on the corrosion and wear resistance properties of zirconia nanostructured coatings stabilized with yttria was evaluated. Substrates of 316L steel, glass and monocrystalline silicon (100) were coated by the RF technique "sputtering", with unbalanced magnetron.
To obtain the coatings, a zirconia target stabilized with yttria (YSZ) 8%m and geometrically homogeneous metal pieces of aluminum and silver were used. The YSZ ceramic coatings and the ceramic-metal coatings (YSZ + Ag) were obtained with the RF-sputtering process not reactive with argon atmosphere; while the ceramic coatings (YSZ + Al2O3) were obtained from the YSZ ceramic white and metallic aluminum pieces by means of the reactive RF-sputtering process, for which an Ar / O2 mixture in relation 80/20 was added. The chemical composition of the coatings was changed by modifying the amount of pieces of dopant metal material.
The chemical composition of the coatings was determined using the EDS and XPS techniques, the microstructure with the XRD technique, the corrosion was determined with EIS and Tafel electrochemical techniques and finally the mechanical properties were determined with nanoindentation, scratch and pin on disk.
With the EDS technique, variations in the chemical composition of aluminum were found from 1.6%w to 5.6%w, and variations in the chemical composition of silver from 9.5%w to 61%w. All the coatings presented good resistance to corrosion. Based on the results of hardness (H) and modulus of elasticity (E), the H3/E2 ratio was established, which shows a better wear resistance behavior for YSZ coatings doped with a high content of Al2O3. The coatings doped with Al2O3 showed adhesive wear, while the coatings doped with Ag showed erosive wear.En este trabajo se evaluó el efecto de los materiales dopantes (alúmina y/o plata) en las propiedades de resistencia a la corrosión y el desgaste de recubrimientos nanoestructurados de zirconia estabilizada con itria. Se recubrieron sustratos de acero 316L, vidrio y silicio monocristalino (100), mediante la ténica de RF-“sputtering”, con magnetrón desbalanceado.
Para obtener los recubrimientos se utilizó un blanco de zirconia estabilizada con itria (YSZ) 8%m y trozos metálicos, geométricamente homogéneos, de aluminio y de plata. Los recubrimientos cerámicos YSZ y los recubrimientos cerámico-metal (YSZ+Ag) se obtuvieron con el proceso de RF-sputtering, con magnetrón desbalanceado, no reactivo con atmósfera de argón; mientras que los recubrimientos cerámicos (YSZ + Al2O3) se obtuviero a partir del blanco cerámico YSZ y trozos de aluminio metálico mediante el proceso RF-sputteringn reactivo, con magnetrón desbalanceado, para lo cual se adicionó una mezcla Ar/O2 en relación 80/20. Se varió la composición química de los recubrimientos al modificar la cantidad de trozos de material metálico dopante.
Se determinó la composición química de los recubrimientos mediante las técnicas EDS y XPS, la microestructura con la técnica XRD, la corrosión fue determinada con técnicas electroquímicas EIS y Tafel y por último las propiedades mecánicas fueron determinadas con técnicas de nanoindentación, rayado (scratch) y “pin on disk” según norma ASTM G99.
Con la técnica EDS, se encontraron variaciones de la composición química del aluminio desde 1,6%w hasta 5,6%w, y variaciones de la composición química de la plata desde 9,5%w hasta 61%w. Todos los recubrimientos presentaron buena resistencia a la corrosión. Con base en los resultados de dureza (H) y modulo de elasticidad (E), se estableció la relación H3/E2 con la cual se evidencia un mejor comportamiento de resistencia al desgaste para los recubrimientos YSZ dopados con alto contendio de Al2O3. Los recubrimientos dopados con Al2O3 mostraron desgaste ahesivo, mientras que los recubrimientos dopados con Ag mostraron desgaste erosivo.Doctorad
