3,003 research outputs found

    A Novel Design of Multi-Chambered Biomass Battery

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    In this paper, a novel design of biomass battery has been introduced for providing electricity to meet the lighting requirements of rural household using biomass. A biomass battery is designed, developed and tested using cow dung as the raw material. This is done via anaerobic digestion of the cow dung, and power generation driven by the ions produced henceforth. The voltage and power output is estimated for the proposed system. It is for the first time that such a high voltage is obtained from cow dung fed biomass battery. The output characteristics of this novel battery design have also been compared with the previously designed battery

    ANALYSIS OF VIPAKA (METABOLIC TRANSFORMATION) OF AN EXTRA-PHARMACOPOEIAL DRUG-BRIDELIA STIPULARIS (L.) BLUME

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    Objective: The objective of the present study is to explore the vipaka of an extra-pharmacopoeia drug Bridelia stipularis (L.) Blume belongs to the Euphorbiaceae family. Methods: 12 Wistar strain albino rats were selected and divided into 2 groups; Group A-Control, Group B-Test group. Each rat was kept in separate metabolic cages provided with a constant amount of water and food per day. Assessment of vipaka was done based on the consumption of food, consumption of water, the quantity of faecal matter, urine output, and quantity of water content of expelled faecal matter per day. Assessment of Vipaka was done on the basis of consumption of food; consumption of water; the quantity of faecal matter, urine output and quantity water content of expelled faecal matter per day. Assessment of Vipaka was done on the basis of consumption of food; consumption of water; the quantity of faecal matter, urine output and quantity water content of expelled faecal matter per day. Results: Absolute values of Group B or test group exhibited significant increase in water consumption (p<0.01), wet faecal matter (p<0.05), dry faecal matter (p<0.001), and food conversion ratio (p<0.05), and non-significant increase in food consumption, urine output, faecal water, and body weight. Conclusion: Based on the preliminary analysis it may be concluded that the drug Bridelia stipularis (L.) Blume possess Madhura vipaka (Sweet metabolic transformation)

    ZRELI EMBRIJ KAO POLAZNI MATERIJAL ZA UČINKOVIT POTICAJ REGENERACIJE KOD SIRKA (Sorghum bicolor L. Moench.)

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    Efficient plant regeneration is a prerequisite for a complete genetic transformation protocol in cereals. Aiming this, in the present study, we have accomplished efficient plant regeneration using mature embryos as a source material in Sorghum bicolor (L.) Moench. Although immature inflorescence and immature embryos are best explant sources for in vitro culture in Sorghum, however they are available only for a limited period in a year. Mature embryos have always been ideal for in vitro studies for the reason that they can be handled easily over other explants and available throughout the year. Mature embryo explants of Sorghum bicolor genotypes viz. IS 3566, SPV 475, CSV13, CSV15, CSV112, IS 348 were cultured on MS medium for efficient callus induction and subsequent plant regeneration. The response of different combination and concentrations of plant growth regulators were compared, and factors affecting the mature embryo tissue culture response were studied in this manuscript. Significant genotypic differentiation was detected in embryogenic callus induction and plantlet regeneration. Genotype IS 3566 showed better tissue culture response than the other genotypes. Efficient embryogenic callus induction was achieved with 2mg l-1 2, 4,5- Trichlorophenoxyacetic acid (2,4,5-T) and multiple shoot induction was achieved by manipulation of 6-benzyl adenine (BAP), Thidiazuron (TDZ), and Indole-3-acetic acid (IAA) in the culture medium.Učinkovita regeneracija kod biljaka preduvjet je za potpun transformacijski protokol kod žitarica. Ovim istraživanjem izvedena je uspješna regeneracija biljaka korištenjem zrelih embrija sirka Sorghum bicolor (L.) Moench. kao polaznog materijala. Cvjetovi i nezreli embriji najbolji su za eksplantaciju in vitro kulture sirka, ali poteškoće se javljaju jer su oni dostupni samo u određenom dijelu godine. Zreli embriji su oduvijek bili idealni za in vitro istraživanja iz razloga što se njima puno lakše rukuje u odnosu na druge eksplatante, a dostupni su tijekom cijele godine. Zreli eksplatanti sirka genotipova IS 3566, SPV 475, CSV13, CSV15, CSV112 i IS 348 kultivirani su na MS mediju za stvaranje učinkovitog kalusa i naknadnu regeneraciju. U istraživanjima su testirane razne kombinacije i koncentracije regulatora rasta te faktori koji utječu na tkivo zrelog embrija. Uočene su značajne genotipske razlike kod indukcije embrionalnog kalusa i regeneracije biljaka. Genotip IS 3566 pokazao je bolje rezultate u kulturi tkiva od ostalih genotipa. Učinkovita indukcije embrionalnog kalusa postignuta je s 2mg l-1 2, 4,5- Triklorfenoksioctenom kiselinom (2,4,5-T) i višestrukim dozama indukcije koje su postignute korištenjem 6-benzyl adenina (BAP), Thidiazurona (TDZ) i Indol-3-octenom kiselinom (IAA) u mediju kulture

    Contribution of Jimma University to Provide Scintific Information and Research Culture in Ethiopia

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    Background: Ethiopian Journal of Health Sciences is published by Jimma University since July 1990 to provide scientific and technological information on health and related fields for informed planning and decision-making and to enable researchers share their scientific work, observations and experiences. This study does the content analysis of EJHS regarding its contribution publishing the type of articles, discipline of the study, cultural area (urban/rural), and region of the study, research conducted by (University/college), topics of research and other variables. Methods: Broad categories as variable of each article of all the volumes available in Jimma University were entered in the software SPSS 11.0. Interpretation was based on the simple frequency analysis. Results: A total 209 articles in 15 volumes until January 2005 were analyzed. The journal is regularly published in January and July every year (87%). Emphasis was on original articles (70%) published an average by 2 authors holding Bachelor (55%) and Master (35%) degree. Medical sciences were the dominating discipline publishing 50% articles followed by social and behavioral sciences (22%). Majority research was conducted in urban (82%) by Jimma (82%) university in Oromiya (76%) region. Major topics studied were on communicable diseases (22%), environmental health (11%), demography/family planning (10%), nutrition (9%), pharmacy & drug testing (8%) using quantitative methods (86%). Conclusion: Ethiopian Journal of Health Sciences served its primary purpose providing scientific and technological information regularly. Research community needs to conduct research in rural areas with emphasis on social and behavioral sciences using qualitative methods.Ethiop. J Health Sci. Vol. 16, No. 2 July 200

    First Red List of Medicinal Plants of Andhra Pradesh, India - Conservation Assessment and Management Planning

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    The present article is based on the First Conservation Assessment and Management Planning (CAMP) workshop organized by Medicinal Plants Conservation Centre, Environment Protection Training and Research Institute, Hyderabad, India based on IUCN Red List categories - 2000. In the workshop 50 prioritised medicinal plant species found in Andhra Pradesh were assessed and out of these 39 found to be threatened in the State of Andhra Pradesh, India

    Magneto-mechanical interplay in spin-polarized point contacts

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    We investigate the interplay between magnetic and structural dynamics in ferromagnetic atomic point contacts. In particular, we look at the effect of the atomic relaxation on the energy barrier for magnetic domain wall migration and, reversely, at the effect of the magnetic state on the mechanical forces and structural relaxation. We observe changes of the barrier height due to the atomic relaxation up to 200%, suggesting a very strong coupling between the structural and the magnetic degrees of freedom. The reverse interplay is weak, i.e. the magnetic state has little effect on the structural relaxation at equilibrium or under non-equilibrium, current-carrying conditions.Comment: 5 pages, 4 figure

    Comment on ``Spin Dependent Hopping and Colossal Negative Magnetoresistance in Epitaxial Nd0.52Sr0.48MnO3Nd_{0.52}Sr_{0.48}MnO_{3} Films in Fields up to 50 T''

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    Recently Wagner et al. [Phys. Rev. Lett. Vol. 81, P. 3980 (1998)] proposed that Mott's original model be modified to incorporate a hopping barrier which depends on the misorientation between the spins of electrons at the initial and the final states in an elementary process. They further claimed that using the model they can explain the observed scaling behavior-- negative-magnetoresistivity scaling proportional to the Brillouin function B\cal{B} in the ferromagnetic state and to B2{\cal{B}}^2 in the paramagnetic state. In this comment we argue that the modification needed for Mott's original model is different from that proposed by Wagner et al. and further show that our picture will successfully explain the observed scaling in the two regimes.Comment: 1 pag

    Synthesis and Characterization of Benzoxazinone Derivatives

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    The present work reports synthesis and characterization of different benzoxazinone derivatives. 2-methyl-7-nitro-4H-3,1-benzoxazin-4-one was prepared by refluxing 4- nitroanthranilic acid with acid anhydride. Derivatives of 2-methyl-7-nitro-4H-3,1-benzoxazin-4-one were synthesized by condensation of it with different anilines. Elemental analysis and NMR spectral studies were used to confirm the formation of compounds

    The Efficacy of Low-Molecular Weight Heparin in the Management of Generalized Cutaneous Lichen Planus

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    BACKGROUND AND OBJECTIVES: To assess the efficacy of low molecular weight heparin in the management of generalized cutaneous lichen planus. MATERIALS AND METHODS: This is a one year open label prospective randomized study from July 2013 to June 2014. About 50 cases of generalized Cutaneous lichen planus willing to participate and follow up were included in the study. A brief and relevant medical history was taken during the initial visit and physical examination done to ensure that all relevant eligible criteria are met. Patients were given Injection Enoxaparin sodium 4 mg SC once weekly for 9 weeks and later followed up for 6 months. Efficacy is assessed by monitoring Itch severity score (ISS), DLQI, and nature of old and new lesions. RESULTS: Clinical improvement noticed in the form of decrease in ISS with regression of cutaneous lesions within 1 to 3 weeks in 80 to 90% of cases. There was no occurrence of new lesions in 76% of cases. Improvement in DLQI was noticed in 80% and complete disappearance of itch in 66% of the patients at the end of the study. No adverse effects were observed. CONCLUSION: The rapid improvement and sustained remission in these cases implies that low molecular weight heparin could be a safe, effective and alternative monotherapy in the management of generalized cutaneous lichen planus
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