Hydrus-1D model for simulating water flow through paddy soils under alternate wetting and drying irrigation practice     

Shekhar  Shashank  Mailapalli  Damodhara Rao  Raghuwanshi  Narendra Singh  Das  Bhabani Sankar 《Paddy and Water Environment》2020,18(1):73-85

Paddy and Water Environment - Alternate wetting and drying (AWD) irrigation practice in paddy cultivation requires a safe soil moisture stress level in the root zone for which irrigation water...  相似文献   

Dietary emodin affects the growth performance,immune responses,and disease resistance of Labeo rohita against Aeromonas hydrophila     

Sib Sankar Giri  S. Jai Suda  V. Sukumaran  Se Chang Park 《Aquaculture International》2016,24(1):85-99

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Effect of chemically modified date palm leaf fiber on mechanical,thermal and rheological properties of polyvinylpyrrolidone     

Jyoti R. Mohanty  Sankar N. Das  Harish C. Das  Sarat K. Swain 《Fibers and Polymers》2014,15(5):1062-1070

Polyvinylpyrrolidone/date palm leaf fiber (PVP/DPL) biocomposites were prepared by melt mixing fabrication technique with different weight percentage of fibers. DPL fibers were chemically modified by acrylic acid in order to have better dispersion and compatibility with PVP matrix. The interaction of DPL fibers with PVP matrix was studied by Fourier transforms infrared spectroscopy (FTIR). Field emission scanning electron microscope (FESEM) was used for the study the morphology of chemically modified DPL fibers and PVP/DPL biocomposites. Mechanical properties were improved with fiber loading due to strong interfacial adhesion between PVP and DPL fibers. The storage modulus, loss modulus and tan delta values of PVA/DPL biocomposites were measured by DMTA. The rheological properties were investigated to study the shearing storage and loss modulii along with complex viscosity of biocomposites. The thermal and conducting properties of biocomposites were measured and compared with that of virgin PVP.  相似文献   

Cloning and Sequencing of a 21 kDa Outer Membrane Protein Gene of <Emphasis Type="Italic">Leptospira interrogans</Emphasis> serovar Canicola strain Hond Utrecht IV     

Cheema PS  Srivastava SK  Chaudhuri P  Amutha R  Singh S  Sankar M  Thangapandian E 《Veterinary research communications》2007,31(5):521-527

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Chromosome Damage Not Found in Leukocytes of Children Treated with LSD-25     

Bender L  Sankar DV  Irwin S  Egozcue J 《Science (New York, N.Y.)》1968,159(3816):749

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Genetics. Toward a new vocabulary of human genetic variation     

Sankar P  Cho MK 《Science (New York, N.Y.)》2002,298(5597):1337-1338

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Antifeedant activity of a novel 6-(4,7-hydroxy-heptyl) quinone^? from the leaves of the milkweed Pergularia daemia on the cotton bollworm Helicoverpa armigera (Hub.) and the tobacco armyworm Spodoptera litura (Fab.)     

Manickam Pavunraj  Chellaiah Muthu  Savarimuthu Ignacimuthu  Sundaram Janarthanan  Veeramuthu Duraipandiyan  Nagappan Raja  Selvaraj Vimalraj 《Phytoparasitica》2011,39(2):145-150

The effects of crude extracts and an isolated compound from the leaves of milkweed, Pergularia daemia (Forssk) Choiv., on the antifeedant activity against two important lepidopteran pests, Helicoverpa armigera (Hub.) and Spodoptera litura (F.), were studied. Maximum antifeedant activity was recorded in ethyl acetate crude extract against H. armigera (70.3%) and S. litura (71.82%) at 1% concentration. Ethyl acetate crude extract was further subjected to column chromatography, which was performed using hexane as initial solvent and then by increasing the polar strength using ethyl acetate. Fractions collected at hexane and ethyl acetate (80:20) yielded 6-(4,7-hydroxy-heptyl) quinone, a novel compound which showed significant antifeedant activity against H. armigera (80.22% at 2000 ppm) and S. litura (68.31% at 2000 ppm).  相似文献   

Interaction of curcumin with phosphatidylcholine: A spectrofluorometric study     

Began G  Sudharshan E  Udaya Sankar K  Appu Rao AG 《Journal of agricultural and food chemistry》1999,47(12):4992-4997

Curcumin [1,7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3, 5-dione], the main constituent of the rhizomes of the plant Curcume longa L. (turmeric), is a powerful antioxidant in both enzymatic and nonenzymatic systems. The interactions of curcumin with egg and soy phosphatidylcholine were followed by fluorescence spectroscopy. Curcumin had very weak fluorescence in aqueous system, which was enhanced in apolar environments. Curcumin emitted at 490 nm after being excited at 451 nm in phosphatidylcholine micelles. The equilibrium constants for the interaction of curcumin with egg and soy phosphatidylcholine were (3.26 +/- 0.2) x 10(5) and (2.64 +/- 0.2) x 10(5) M(-1), respectively. From the Scatchard plot of the fluorometric data, it was inferred that one molecule of curcumin could bind six molecules of phosphatidylcholine. The equilibrium constant for the phosphatidylcholine-curcumin interaction decreased with temperature, indicating the amphiphilic nature of curcumin. The DeltaG, DeltaH, and DeltaS values obtained for the interaction of egg phosphatidylcholine-curcumin were -7.8 +/- 0.3 kcal/mol, -9.6 +/- 0.4 kcal/mol, and -6.8 +/- 0.2 cal/mol/K, respectively. The fluorescence anisotropy measurements of curcumin with phosphatidylcholine suggested that the anisotropy of the curcumin molecule did not change in phosphatidylcholine. The interaction of divalent metal ions with phosphatidylcholine-curcumin in comparison with phosphatidylcholine-1-anilino-8-naphathalenesulfonic acid complex suggested the strong binding of curcumin to metal ions.  相似文献   

Interaction of curcumin with phosphatidylcholine: A spectrofluorometric study     

Began G  Sudharshan E  Sankar KU  Rao AG 《Journal of agricultural and food chemistry》2000,48(2):576

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A study of 1,2-dibromoethane residues in wheat and milled products     

Jiwan S. Sidhu  M. Muthu  Gurcharan S. Bains 《Pest management science》1975,6(5):451-455

A method is described for determining residues of 1,2-dibromoethane (EDB) in milled wheat products. The residues are first extracted with benzene, then recovered azeotropically for reaction with alkali and subsequent determination of liberated bromide ion by a Volhard titration. Freshly milled flours from wheat fumigated with 65.0 and 325 mg EDB/litre at 37°C were found to contain 10.6 to 39.4 mg EDB/kg and the bran contained from 51.4 to 153 mg EDB/kg.  相似文献