3,066 research outputs found

    Changes in the electronic structure and properties of graphene induced by molecular charge-transfer

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    Interaction with electron donor and acceptor molecules such as aniline and nitrobenzene brings about marked changes in the Raman spectrum and the electronic structure of graphene, prepared by the exfoliation of graphitic oxide.Comment: 13 pages, 4 figure

    Effect of organic manures on growth and yield attributes of Soybean (Glycine max L.) under Subabul (Leucaena leucocephala) based Agroforestry system

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    A field trail was carried out at the research farm of the School of Forestry and Environment, SHIATS, Allahabad. The experimental research site is situated at an altitude of 90 m above the sea level at 25.570 N latitude and 81.510 E longitudes. The experiment comprised seven treatments replicated thrice. The maximum germination % (96.67%), plant height (83.73cm), number of branches/ plant (11.93), fresh weight (185.28g), dry weight (45.73g), at 110 days after sowing (DAS), number of pods/plant (91.67), number of seeds/pod (3.93), pod length (6.93 cm),test weight (90.73g), seed yield (23.87q/ha), straw yield (40.73 q/ha) and harvest index (36.94%) recorded in treatment T5. The result showed that the applications of organic manure (50% Farmyard Manure + 50% Vermicompost) maximized the soybean growth and yield under subabul trees. Therefore, it may be concluded that 50% Farmyard Manure + 50% Vermicompost can be recommended for growing soybean under subabul based Agroforestry system for obtaining better growth and yield

    Ethnomedicinal practices of Kol tribes in Similipal Biosphere Reserve, Orissa, India

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    Similipal Biosphere Reserve (SBR) in Mayurbhanj district of Orissa is the most luxuriant forest and rich in medicinal plant resources. The forest area is dominated by a number of tribes such as Kol, Santal, Bhumij, Mankidias and Khadias who depends on the forest for their food to medicine. The present paper reports on ethnomedicinal uses of 32 potential medicinal plants belong to 24 families of medicinal plants used for ailment of various diseases like leucorrhoea, spermatorrhea, piles, sore throat, rheumatism, elephantiasis etc. by Kol tribe living in some villages situated in and around Similipal Biosphere Reserve.The botanical name, family name, vernacular name, parts used, method of preparation, usage, administration of the drugs are given

    Mineralogical characterization and sorption properties of goethite rich iron ore from daitari, Orissa, India

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    The present study was an attempt to find alternative uses of goethite rich iron ore, usually not used as raw material for iron extraction, as an adsorbent for removal of anionic contaminants from water. Mineralogical characterization by optical microscope, XRD revealed the presence of substantial amount goethite in the iron ore which was also supported from the TG-DTA and FT-IR results. On heating in air, the goethite content was completely converted to hematite at 400°C. The sorption behaviour of the untreated (GRI-0) and heat treated iron ore were studied using aqueous phosphate solution as the adsorbate with respect to effect of pH, initial phosphate concentration, amount of adsorbent, interfering anions and heat treatment. Phosphate uptake was seen to increase with increasing temperature of heat treatment, attains a maximum value at 300°C and thereafter decreased on further increase of temperature. The experimental equilibrium adsorption data were fitted well to Langmuir isotherm model. The complete desorption of adsorbed phosphate at pH ≥ 12.0 indicated the adsorption of phosphate was reversible and may be reused further. The results obtained could be useful for considering GRI-0 as adsorbent for removal of phosphate ions from contaminated water bodies

    Allelopathic effect of Leucaena leucocephala on Pansy (Viola tricolor L.)

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    The present study on allelopahtic effect of L. leucocephala on pansy (V. tricolor L.) both laboratory and nursery conditions were undertaken. Leucaena which significantly reduced the seed germination in all treatments at 2% (43%), 3% (42%) and 4% (40%) over Control (Distilled water), except in treatment at 1% (55%) wheregermination was found to be maximum over Control (Distilled water), this result shows the stimulatory effect on germination at 1% concentration of leaf leachate under laboratory condition. Leucaena soil in combination with Field soil showed stimulatory effect on the growth parameters in Pansy. Highest germination percentage (82%), fresh shoot weight (2.82g), fresh root weight (0.22g), dry shoot weight (0.50g), dry root weight (0.05g), vigor index (99.36) were recorded in treatment amended with soil 50% Leucaena soil and 50% Field soil and inhibitory effect was seen in pansy when amended into with 100% Leucaena soil under nursery condition. From this study it appears that Leucaena produces allelopahtic substrates, increase in concentration exhibit adverse effect on germination and growth parameters. Hence it is suggested that pansy could be affected economically but this tree can very well adapt to diversified soil condition

    Temperature Dependence of Velocity of Sound in High-Tc Superconductors in Normal State

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    The role of Newcastle disease virus internal proteins in pathogenesis

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    The internal proteins, nucleocaspid protein (NP), phosphoprotein (P) and large polymerase protein (L) of Newcastle disease virus (NDV), play an important role in transcription and replication of the viral genome. However, their role in NDV pathogenesis has not been explored. In this study, the importance of internal proteins in NDV virulence was evaluated through a chimeric approach using an established reverse genetics technique. The L gene between an avirulent NDV strain LaSota and a moderately virulent NDV strain Beaudette C (BC) was exchanged, recombinant chimeric viruses were recovered and studied for their pathogenicity in the natural host, chicken. The results obtained from in vivo studies indicated that the L gene of NDV modulate role in NDV virulence in chickens. The NP and P genes of NDV were exchanged between BC and LaSota individually as well as in combination; chimeric viruses were recovered, indicating that heterologous NP and P genes were functional. In vitro replication of chimeric NP and P recombinant viruses in DF-1 cells indicated that the exchange of NP or P gene in NDV did not affect the replication of the chimeric viruses. The in vivo studies in chickens showed that the change in pathogenicity of these chimeric viruses was minimal and homotypic interaction between NP and P proteins is necessary for optimum pathogenicity of the virus
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