133 research outputs found

    YIELD AND YIELD ATTRIBUTES OF RAPESEED AS INFLUENCED BY DATE OF PLANTING

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    ABSTRACT (Ghosh and Chatterjee, 1988) . The average yield of mustard in this country is 739 kg/ha whereas the world average yield of mustard is 1575 kg/h

    Scanning-helium-ion-beam lithography with hydrogen silsesquioxane resist

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    A scanning-helium-ion-beam microscope is now commercially available. This microscope can be used to perform lithography similar to, but of potentially higher resolution than, scanning electron-beam lithography. This article describes the control of this microscope for lithography via beam steering/blanking electronics and evaluates the high-resolution performance of scanning helium-ion-beam lithography. The authors found that sub-10 nm-half-pitch patterning is feasible. They also measured a point-spread function that indicates a reduction in the micrometer-range proximity effect typical in electron-beam lithography.National Science Foundation (U.S.). Graduate Research Fellowship Progra

    A Study of Reconfigurable Accelerators for Cloud Computing

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    Due to the exponential increase in network traffic in the data centers, thousands of servers interconnected with high bandwidth switches are required. Field Programmable Gate Arrays (FPGAs) with Cloud ecosystem offer high performance in efficiency and energy, making them active resources, easy to program and reconfigure. This paper looks at FPGAs as reconfigurable accelerators for the cloud computing presents the main hardware accelerators that have been presented in various widely used cloud computing applications such as: MapReduce, Spark, Memcached, Databases

    COVID-19 Epidemic in Bangladesh among rural and urban residents: an online cross-sectional survey of knowledge, attitudes, and practices

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    As other nations around the world, Bangladesh is facing enormous challenges with the novel coronavirus (COVID-19) epidemic. To design a prevention and control strategy for this new infectious disease, it is essential to first understand people’s knowledge, attitudes, and practices (KAP) regarding COVID-19. This study sought to determine KAP among rural and urban residents as well as predictors of preventive practices associated with COVID-19 in Bangladesh. A social media-based (Facebook) cross-sectional survey was conducted to explore these variables among Bangladeshi adults. Of 1520 respondents who completed the questionnaire, low level of good or sufficient knowledge of COVID-19 (70.8%) and practices associated with COVID-19 (73.8%) were found. Despite the low level of knowledge and practices, respondents’ attitude (78.9%) towards COVID-19 was relatively high. Results suggest that compared to urban, rural residents are at a particularly high risk of COVID-19 because they were found to have significantly lower knowledge (p = 0.001) and practice levels (p = 0.002) than were urban residents. Multivariable logistic regression analysis identified gender, education, knowledge of COVID-19 transmission, signs and symptoms, and sources of information as factors significantly associated with preventive practices against COVID-19. Further attention and effort should be directed toward increasing both knowledge and practices targeting the general population in Bangladesh, particularly the rural and less educated residents. Findings from this study provide baseline data that can be used to promote integrated awareness of and effective health education programs about COVID-19 prevention and control strategies in Bangladesh, and similar COVID-19 endemic countries

    Razbijanje jezgri u sudarima 28Si-AgBr na 14.5 AGeV – podaci o dvo- i višečestičnim dinamičkim korelacijama

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    This paper reports an investigation of the two-particle and three-particle short-range angular correlations among the target fragments produced in 28Si-AgBr interactions at 14.5 AGeV. The experimental data have been compared with Monte Carlo simulated events to extract dynamical correlations. The data exhibit strong two-particle and three-particle correlations among the target fragments. The data further indicate the occurrence of the so-called side splash phenomena and disfavour the evaporation model.Izvješćujemo o istraživanju dvo- i tročestičnih kratko-dosežnih korelacija dijelova mete proizvedenih u sudarima 28Si–AgBr na 14.5 AGeV. Eksperimetalni se podaci uspoređuju s oponašanima izračunatim Monte Carlo metodom radi razdvajanja dinamičkih korelacija. Podaci ukazuju na pojavu tzv. pljuštenja (engl. “splash”) i nisu u skladu s modelom isparavanja

    Razbijanje jezgri u sudarima 28Si-AgBr na 14.5 AGeV – podaci o dvo- i višečestičnim dinamičkim korelacijama

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    This paper reports an investigation of the two-particle and three-particle short-range angular correlations among the target fragments produced in 28Si-AgBr interactions at 14.5 AGeV. The experimental data have been compared with Monte Carlo simulated events to extract dynamical correlations. The data exhibit strong two-particle and three-particle correlations among the target fragments. The data further indicate the occurrence of the so-called side splash phenomena and disfavour the evaporation model.Izvješćujemo o istraživanju dvo- i tročestičnih kratko-dosežnih korelacija dijelova mete proizvedenih u sudarima 28Si–AgBr na 14.5 AGeV. Eksperimetalni se podaci uspoređuju s oponašanima izračunatim Monte Carlo metodom radi razdvajanja dinamičkih korelacija. Podaci ukazuju na pojavu tzv. pljuštenja (engl. “splash”) i nisu u skladu s modelom isparavanja

    GlaciStore: understanding Late Cenozoic glaciation and basin processes for the development of secure large scale offshore CO2 storage (North Sea).

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    The sedimentary strata of the North Sea Basin (NSB) record the glacial and interglacial history of environmental change in the Northern Hemisphere, and are a proposed location for the engineered storage of carbon dioxide (CO2) captured from power plant and industrial sources to reduce greenhouse gas emissions. These aspects interact in the geomechanical and fluid flow domain, as ice sheet dynamics change the properties of potential seal and reservoir rocks that are the prospective geological storage strata for much of Europe’s captured CO2. The central part of the NSB preserves a unique history of the depositional record spanning at least the last 3 Ma, which also forms the overburden and uppermost seal to the underlying CO2 reservoirs. There is good evidence that these ice sheets created strong feedback loops that subsequently affected the evolution of the Quaternary climate system through complex ocean-atmosphere-cryosphere linkages

    Nanostructures Technology, Research, and Applications

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    Contains reports on seventeen research projects and a list of publications.Joint Services Electronics Program Contract DAAL03-92-C-0001Joint Services Electronics Program Grant DAAH04-95-1-0038Semiconductor Research Corporation Contract 94-MJ-550National Science Foundation Grant ECS 94-07078U.S. Army Research Office Contract DAAL03-92-G-0291Advanced Research Projects Agency/Naval Air Systems Command Contract N00019-92-K-0021National Aeronautics and Space Administration Contract NAS8-36748National Aeronautics and Space Administration Grant NAGW-2003IBM Corporation Contract 1622U.S. Army Research Office Grant DAAH04-94-G-0377U.S. Air Force - Office of Scientific Research Grant F-49-620-92-J-006

    Nanostructures, Technology, Research, and Applications

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    Contains reports on the nanostructures laboratory, eighteen research projects and a list of publications.Joint Services Electronics Program Grant DAAH04-95-1-0038Semiconductor Research Corporation Contract 95-LJ-550National Science Foundation Grant ECS 94-07078U.S. Army Research Office Grant DAAH04-95-1-0564Defense Advanced Research Projects Agency/Naval Air Systems Command Contract N00019-95-K-0131National Aeronautics and Space Administration Contract NAS8-38249National Aeronautics and Space Administration Grant NAGW-2003IBM Corporation Contract 1622U.S. Navy- Office of Naval Research Grant N00014-95-1-1297U.S. Army Research Office Grant DAAH04-94-G-0377U.S. Air Force - Office of Scientific Research Grant F-49-620-92-J-0064U.S. Air Force - Office of Scientific Research Grant F-49-620-95-1-031

    Retracing the history and planning the future of the red squirrel (Sciurus vulgaris) in Ireland using non-invasive genetics

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    The Eurasian red squirrel’s (Sciurus vulgaris) history in Ireland is largely unknown, but the original population is thought to have been driven to extinction by humans in the 17th Century, and multiple records exist for its subsequent reintroduction in the 19th 4 Century. However, it is currently unknown how these reintroductions affect the red squirrel population today, or may do so in the future. In this study, we report on the development of a DNA toolkit for the non-invasive genetic study of the red squirrel. Non-invasively collected red squirrel samples were combined with other samples collected throughout Ireland and previously published mitochondrial DNA (mtDNA) data from Ireland, Great Britain and continental Europe to give an insight into population genetics and historical introductions of the red squirrel in Ireland. Our findings demonstrate that the Irish red squirrel population is on a national scale quite genetically diverse, but at a local level contains relatively low levels of genetic diversity and evidence of genetic structure. This is likely an artefact of the introduction of a small number of genetically similar animals to specific sites. A lack of continuous woodland cover in Ireland has prevented further mixing with animals of different origins that may have been introduced even to neighbouring sites. Consequently, some of these genetically isolated populations are or may in the future be at risk of extinction. The Irish red squirrel population contains mtDNA haplotypes of both a British and Continental European origin, the former of which are now extinct or simply not recorded in contemporary Great Britain. The Irish population is therefore important in terms of red squirrel conservation not only in Ireland, but also for Great Britain, and should be appropriately managed
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