A Thermosiphon Loop for High Heat Flux Removal using Flow Boiling of Ethanol in Open Microchannel Manifold (OMM) with Taper

Open Microchannel Manifold (OMM) with taper has proved instrumental in enhancing heat transfer performance in flow boiling while keep the pressure drop to a minimum. This makes it applicable in developing a low pressure drop system like a thermosiphon loop. To this end, a gravity-driven flow boiling system developed earlier was tested at low flow rates using ethanol. Based on the pressure drop and heat transfer data, a two-phase thermosiphon loop with a small ethanol head below 0.2 m was developed and tested with OMM configuration. A maximum heat flux of 136 W/cm2 was recorded at a wall superheat of 42 °C. Pressure drop data showed stable thermosiphon operation with lesser flow and pressure fluctuations over the microchannels with increase in heat flux. Stable operation was complimented with tremendously low pressure drop below 4 kPa near Critical Heat Flux (CHF). Investigations were also carried out on the effect of flow orientation on flow boiling performance in the gravity-driven flow boiling system by varying the orientations as horizontal flow (0°), vertical upflow (90°) and vertical downflow (-90°) flow. Flow couldn’t be sustained in the vertical upflow orientation, however, the system performed best in the horizontal flow orientation. The heat transfer performance of the thermosiphon loop was independent of the orientation of the test section with the horizontal and the vertical upflow configurations giving similar heat transfer performances

What Is Safe Limit of the Perforator Flap in Lower Extremity Reconstruction? Do We Have Answers Yet?

We make an attempt to define the safe extent of local perforator flap for lower limb reconstruction by comparing it with the limb length of the patient. The maximum flap length from the perforator was compared to the limb length in 35 patients using EPI info 6.04 D software. On comparison of flaps that were less than one-third of limb length to those which were more than one-third of limb length, the statistical values were significant. The odds ratio calculated was 6, which means that there is a six times more chance that a local perforator flap will necrose if it is more than one-third of the limb length as compared to a flap which is less than one-third of the limb length

Web Application for News Portal

News Portal provides access to all online Information about the Environment and each information source gets its dedicated area on the page for displaying information. Ne ws portal is to provide specific information, selected from newswire sit es on the Internet and also by video clips automatically extracted from TV broadcasts and as per the needs of users . The idea to made this project is to develop such web sites which will be very User friendly. This web site is working for peoples who want to share something interesting, knowledgeable, healthy, and entertainment. The traditional media rooms all around the world are fast adapting to the new age technologies. This marks the beginnin g of news portals by media houses across the globe and such new media channels give them the opportunity to reach the viewers in a shorter span of time than their print media counterparts

Impact of biotic and abiotic factors on lac production and peoples’ livelihood improvement in India-An overview

In India, Madhya Pradesh is the third largest lac producing state after Chhattisgarh and Jharkhand, as they contribute 12, 16 and 60%, respectively in total country’s lac production. Lac is produced in ten out of eleven agro-climatic zones of Madhya Pradesh. In total lac production of the state, Baisakhi (Butea monosperma, inoculated in October-November) crop contributes 76% followed by 19% by Katki (Butea monosperma, inoculated in June-July), 3% by Aghani (Schleichera oleosa, inoculated in June-July) and 2% by Jethwi (Schleichera oleosa, inoculated in January-February). Ranchi was leading lac producing district followed by Simdega, Gumla, Khunti of Jharkhand and Seoni district of Madhya Pradesh. Increasing summer temperature up to 45 ?C, the country’s lac production was declined from 20,050 tons in 2003-04 to 16978 tons in 2014-15. In case of biotic factors, Tachardiaephagus tachardiae and Tetrastichus purpureus are the most abundant lac associated parasites and Eublemma amabilis and Pseudohypatopa pulverea are the most destructive key predators of lac insects. By combating these hindrances, lac cultivation generated an employment for 16-160 man days. Lac cultivation produces maximum gross return (Rs. 9,77,600) from 100 Kusum host plants, and the highest Benefit-Cost (6.80) ratio was recorded for Ber-kusumi (Ziziphus mauritiana- Schleichera oleosa) crop in Ranchi, Jharkhand. In this context, the study finds out obstacles in lac production of India and suggests some control measures to improve lac producing peoples’ livelihood. &nbsp

Efficacy of different herbicides against weed flora in Onion

ABSTRAC

Slx8 removes Pli1-dependent protein-SUMO conjugates including SUMOylated Topoisomerase I to promote genome stability

Peer reviewedPublisher PD

Alumina-catalysed derivatisation of sesquiterpene lactones

1047-104

A diterpene alkaloid from the needles of Taxus baccata

114-11