951 resultados para Gato doméstico
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Tesis de la Universidad Central (Madrid), Facultad de Jurisprudencia, leída en 1850.
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Mode of access: Internet.
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Mode of access: Internet.
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"Representado con aplauso en el teatro del príncipe el día 1º de Mayo de 1852" -port.-
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La ponencia desarrolla el proceso de construcción de "lo doméstico" en la cotidianeidad de una escuela albergue rural. Expone los debates teóricos-empíricos y su articulación en esta dimensión analítica. Tal planteo deriva de interrogantes emergentes en las conclusiones arrojadas en una investigación anterior, que apuntan a una dimensión doméstico - escolar, como configuración particular de posiciones. Investigación que continúa en tesis de maestría. La primera parte expone una breve presentación empírica del caso, y una introducción al marco teórico. La segunda parte desarrolla el material de campo en tres secciones. Finalmente la conclusión expone las hipótesis que orientan el curso de la presente investigación
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Os movimentos de contestação social que tiveram lugar nos anos 60 trouxeram novas perspectivas para as mulheres, verificando-se crescente inserção destas no mercado de trabalho. No entanto, a persistência do trabalho doméstico sob responsabilidade dominante das mulheres, mesmo nesse contexto em que os índices de participação feminina no mercado de trabalho se elevam, tem chamado a atenção para os constrangimentos de ordem subjetiva e sócio-cultural como elementos decisivos dentre os que cooperam para a manutenção desse quadro. Ou seja, a desigualdade persiste em face da persistência de hierarquias de gênero que continuam a delimitar o lugar das mulheres e que encontram nas religiões o seu lócus privilegiado de produção e reprodução. É no contexto da economia simbólica batista, em que as representações tradicionais do homem como cabeça e da mulher como auxiliadora significam o homem como provedor e a mulher como esposa e mãe, responsável pelos afazeres domésticos, que abordamos aqui a problemática da divisão sexual do trabalho, enquanto e a partir da representação e prática de sujeitos religiosos batistas paulistanos. Ao mesmo tempo em que o discurso religioso batista afirma e ratifica a divisão sexual do trabalho, está sujeito às solicitações sociais por mudanças nas relações de gênero, favorecendo a mobilização de doutrinas religiosas igualitárias presentes entre os batistas. É, portanto, numa perspectiva dinâmica de tensões entre os avanços e permanências nas práticas de gênero ao nível da sociedade mais ampla, e que se colocam tanto a partir dos valores culturais desta, quanto a partir das condições materiais e estruturais encontradas aí, e de tensões entre o processo de secularização e compromisso ético que as representações e práticas de gênero entre os batistas pesquisados permanecem enquanto se transformam e avançam enquanto se mantêm.
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The development of home refrigerators generally are compact and economic reasons for using simplified configuration. The thermodynamic coefficient of performance ( COP ) is limited mainly in the condenser design for reasons of size and arrangement ( layout ) of the project ( design ) and climatic characteristics of the region where it will operate. It is noteworthy that this latter limitation is very significant when it comes to a country of continental size like Brazil with diverse climatic conditions. The COP of the cycle depends crucially on the ability of heat dissipated in the condenser. So in hot climates like the northeast, north, and west-central dispel ability is highly attenuated compared to the south and southeast regions with tropical or subtropical climates when compared with other regions. The dissipation in compact capacitors for applications in domestic refrigeration has been the focus of several studies, that due to its impact on reducing costs and power consumption, and better use of the space occupied by the components of refrigeration systems. This space should be kept to a minimum to allow an increase in the useful storage volume of refrigerator without changing the external dimensions of the product. Due to its low cost manufacturing, wire on tube condensers continue to be the most advantageous option for domestic refrigeration. Traditionally, these heat exchangers are designed to operate under natural convection. Not always, the benefits of greater compactness of capacitors for forced outweigh the burden of pumping air through the external heat exchanger. In this work we propose an improvement in convective condenser changing it to a transfer mechanism combined in series with conductive pipes and wire to a moist convective porous medium and the porous medium to the environment. The porous media used in the coating was composed of a gypsum plaster impregnated fiber about a mesh of natural cellulosic molded tubular wire mesh about the original structure of the condenser , and then dried and calcined to greater adherence and increased porosity. The proposed configuration was installed in domestic refrigeration system ( trough ) and tested under the same conditions of the original configuration . Was also evaluated in the dry condition and humidified drip water under natural and forced with an electro - fan ( fan coil ) convection. Assays were performed for the same 134- refrigerant charge e under the same thermal cooling load. The performance was evaluated in various configurations, showing an improvement of about 72 % compared with the original configuration proposed in humidification and natural convection.
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Studies using neuronal tract-tracer in rat have shown that the anterior hypothalamic nucleus, dorsomedial division of the ventromedial nucleus of the hypothalamus and dorsal premammillary nucleus are highly connected. When the rat is exposed to predator or its odor these nuclei have shown a expression of Fos and their lesion reduces defensive behavior against predator. This set of nuclei was named the Hypothalamic Defense System. However, little is known about the response of this system to the odor of different predators or its role in mice. In this work, we exposed Swiss mice to two different predators odor (cat and snake) to verify the Fos expression in the Hypothalamic Defense System, as well as the defensive behaviors displayed. The analysis showed that the mice exposure to cat odor had an increased expression of Fos protein compared to control, while those exposed to snake odor showed no rise in Fos expression, which was corroborated by the behavioral data. Our results indicate that this distinct circuit in mice seems to act differentially to odorous stimuli of different predators, causing distinct behavioral responses of mice and that the odor of snake seems not to be perceived by Swiss mice as a threatening stimulus.
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Household refrigerators are equipments that represent a significant portion on the eletricity consumption of Brazilian homes. The use of these devices with low energy efficiency contributes to increase the energy consumption. The energy efficiency of a refrigerator is a function of the interaction between the coolant fluid and the components of the thermodynamic cycle. Changes in load and/or nature of the coolant may modify the condensing and/or evaporation pressures. The volumetric capacity of the compressor, the mass flow of coolant and the compression power are dependent parameters of the condensation and evaporation pressures. Thus, the expansion devices exert an importante role in the balance of these pressures, being fundamental for the better performance of the refrigeration cycle. This experimental research aims to investigate the sensitivity of the performance parameters of a household refrigerator operating with R134a and at different evaporation pressures. Therefore, a small refrigerator was instrumented with temperature, pressure sensors and other variables of interest, installed along the cooling circuit, in order to allow the thermal mapping and the evaluation of the equipment performance parameters. The variation of pressure loss in the coolant fluid resulting from the operation of the expansion valve with micrometric adjustment that modifies the evaporation temperature, influencing significantly the performance parameters of the thermodynamic refrigeration cycle.
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While the carnivores are considered regulators and structuring of natural communities are also extremely threatened by human activities. Endangered little-spotted-cat (Leopardus tigrinus) is one of the lesser known species from the Neotropical cats. In this work we investigate the occupancy and the activity pattern of L. tigrinus in Caatinga of Rio Grande do Norte testing: 1) how environmental and anthropogenic factors influence their occupation and 2) how biotic and abiotic factors influence their activity pattern. For this we raised occurrence data of species in 10 priority areas for conservation. We built hierarchical models of occupancy based on maximum likelihood to represent biological hypotheses which were ranked using the Akaike Information Criterion (AIC). According to the results the feline occupancy is more likely away from rural settlements and in areas with a higher proportion of woody vegetation. The opportunistic killing of L. tigrinus and in retaliation for poultry predation close to residential areas can explain this result; as well as more complex vegetation structure can better serve as refuge and ensure more food. Analyzing the records of the species through circular statistics we conclude that the activity pattern is mostly nocturnal, although considerable crepuscular and a small diurnal activity. L. tigrinus activity was directly affected by the availability of small terrestrial mammals, which are essentially nocturnal. In addition, the temperatures recorded in the environment directly and indirectly affect the activity of the little-spotted-cat, as also influence the activity of their potential prey. Generally, the cats were more active when possible prey were active, and this happened at night when lower temperatures are recorded. Moreover, the different lunar phases did not affect the activity pattern. The results improve the understanding of an endangered feline inhabiting the Caatinga biome, and thus can help develop conservation and management strategies, as well as in planning future research in this semi-arid ecosystem.
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El hábitat de los felinos del Sudeste Asiático está sufriendo grandes cambios debidos a la acción del hombre. La pérdida de hábitat supone la principal amenaza para las poblaciones salvajes de estas especies y es necesaria la creación de programas de conservación que aseguren su supervivencia. Los aspectos veterinarios en estos programas son de gran utilidad y relevancia para el manejo adecuado y seguro de estas especies tanto en vida libre como en cautividad. Los objetivos del trabajo de campo (in-sito) realizado en esta tesis fueron: evaluar la eficacia y las características anestésicas y los efectos fisiológicos de dos combinaciones farmacológicas (tiletamina-zolacepam; medetomidina-ketamina) empleadas en dos felinos salvajes de Borneo (pantera nebulosa Sunda - Neofeiis diardi- y gato leopardo - Prionailurus bengaleusis borneoensis-) así como evaluar la hematología y bioquímica sérica en estas especies tras la captura mediante jaula-trampa...
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En la década del 70, Christine Delphy presenta la perspectiva del feminismo materialista focalizándose en el trabajo doméstico no remunerado. El análisis de Delphy pone de manifiesto el legado del pensamiento de Beauvoir, puesto que retoma las críticas al marxismo clásico, en tanto que dicha teoría no explicita las condiciones de opresión y de explotación de las mujeres. Estos temas y su tratamiento desde el feminismo materialista los situamos en algunos estudios latinoamericanos. Nos referimos a la ocupación en el "servicio" y las tareas domésticas, y a la segregación que se produce entre las mujeres. Por último, ampliamos el marco de la recepción del pensamiento de Beauvoir, en particular la cuestión de las mujeres trabajadoras, a partir del análisis de Marcela Nari