Design of a Thermal and Micrometeorite Protection System for an Unmanned Lunar Cargo Lander

The first vehicles to land on the lunar surface during the establishment phase of a lunar base will be unmanned lunar cargo landers. These landers will need to be protected against the hostile lunar environment for six to twelve months until the next manned mission arrives. The lunar environment is characterized by large temperature changes and periodic micrometeorite impacts. An automatically deployable and reconfigurable thermal and micrometeorite protection system was designed for an unmanned lunar cargo lander. The protection system is a lightweight multilayered material consisting of alternating layers of thermal and micrometeorite protection material. The protection system is packaged and stored above the lander common module. After landing, the system is deployed to cover the lander using a system of inflatable struts that are inflated using residual fuel (liquid oxygen) from the fuel tanks. Once the lander is unloaded and the protection system is no longer needed, the protection system is reconfigured as a regolith support blanket for the purpose of burying and protecting the common module, or as a lunar surface garage that can be used to sort and store lunar surface vehicles and equipment. A model showing deployment and reconfiguration of the protection system was also constructed

Thermodynamic and heat transfer modeling of a scroll pump

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.Includes bibliographical references (p. 153-154).by Sankar Sunder.Ph.D

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Not AvailableThe humid tropical Islands of Andaman and Nicobar located strategically in the Bay of Bengal constitute one of the most important biodiversity centers of the world. These Islands harbour multitude of land and marine bioresources. Most of them are very unique of its kind and have the potential for commercial exploitation to enhance the livelihood of the islanders and future use for the well being of the country. Modern agriculture is of recent origin to these islands and relatively large expansion took place with the allotment of land to the settlers and native population.Not Availabl

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Not AvailableAgriculture, livestock and fisheries sector plays crucial role in transforming and developing economies along with their contributory role in food security to the rural populations of the developing countries. They also face critical issues concerning climate change, anthropogenic interventions, unsustainable development practices and lack of innovative approaches. In India agriculture sector is considered to be the backbone along with livestock and fisheries with millions of stakeholders dependent. Particularly, Island groups such as Andaman, Nicobar and Lakshadweep are unique biodiversity hotspots. Owing to very unique ecosystems, these islands gain more attention as customary tourism hotspot. Rising tourism increases the exposure of these islands, demanding more production from agriculture and allied sectors. Tourism sector is mostly concentrated on coral reefs and mangrove ecosystems which harbors more than 80% of the fish diversity and are also more affected by extreme events. More importantly these islands are also considered to be free from several deadly diseases in livestock and fisheries sectors. The challenging scenario emerged due to climate change, increasing tourism, reduced land availability and anthropogenic developments are to be dealt with precautionary approaches. Although specific requirements may vary from Island to Island, this policy brief addresses the overall issues, challenges and need for innovative approaches in the most fragile tropical Islands of India towards ensuring sustainable agriculture and allied sector development for the benefit of Island communities.Not Availabl

Dementia in the Bangladeshi diaspora in England: a qualitative study of the myths and stigmas about dementia

Rationale, aims, and objectives: Although Bangladeshis are three times more likely to be carers than White British, Bangladeshi family carers are the most deprived, neglected, and effectively a hidden group in the UK.1 There is a paucity of research within the Bangladeshi community that is capable of explaining and predicting what the experiences and concerns of Bangladeshi family carers providing care for their relatives with dementia. The purpose of this study is to explore the perspectives of Bangladeshi family carers’ knowledge and day-to-day experiences living in England. Methods: Qualitative study involving semi-structured face-to-face interviews with six Bangladeshi family carers living in London and Portsmouth. Interviews were recorded with the consent and transcribed verbatim. Data was managed by using NVivo software and thematic analysis was performed. Results: This paper explores that most carers have a lack of knowledge and awareness of the symptoms of dementia. The results of this study are in contrast to previous studies, where South Asian carers perceived dementia as being possessed by evil spirits or God’s punishment for previous life’s sins, this study reveals Bangladeshi family carers believed dementia was a medical condition. Unlike earlier South Asian studies, however, all family carers in this study also believed there was no stigma attached to dementia. Conclusions: Further research is warranted to investigate the religious beliefs, familism, and interpersonal motives as theoretical perspectives to explain how Bangladeshi family carers negotiate and construct their caregiving roles for their relatives with dementia