Search Results - (Author, Cooperation:R. R. Das)
-
1Latest Papers from Table of Contents or Articles in PressS. H. Baek ; J. Park ; D. M. Kim ; V. A. Aksyuk ; R. R. Das ; S. D. Bu ; D. A. Felker ; J. Lettieri ; V. Vaithyanathan ; S. S. Bharadwaja ; N. Bassiri-Gharb ; Y. B. Chen ; H. P. Sun ; C. M. Folkman ; H. W. Jang ; D. J. Kreft ; S. K. Streiffer ; R. Ramesh ; X. Q. Pan ; S. Trolier-McKinstry ; D. G. Schlom ; M. S. Rzchowski ; R. H. Blick ; C. B. Eom
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-11-19Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 1573-5052Keywords: Flower colour ; Flower density ; PollinationSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Flower colour spectra were initially used in India to characterize the flora of urban localities (Nagrathna, 1968; Oommachan, 1973), but only on a presence-absence basis. In order to have a quantitative appraisal of the flower colour spectrum of the vegetation at a particular locality, the density of the species and the number of flowers on each plant should be taken into account. Only this gives the actual number of flowers of a particular colour per unit area: the flower density.Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesStaff View
ISSN: 1573-5036Keywords: Cycocel (CCC) ; Maleic hydrazide ; Phosfon-D ; Sub-optimal soil moistureVigna unguiculata L. Var. GWL K3BSource: Springer Online Journal Archives 1860-2000Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Summary An experiment for differential water supply was set up. The effects of antitranspirants Phosfon-D and CCC on the growth ofVigna unguiculata L. Var K3B grown under suboptimal soil moisture conditions were recorded. An evaluation of the various aspects of growthe.g., seedling survival percentage, shoot growth, root growth, stomatal index and chlorophyll content indicated that application of CCC and Phosfon-D can help withstanding the adverse effects of sub-optimal soil moisture conditions to a certain extent. In the beginning of the paper effects of Phosfon-D CCC and MH on seedling growth are described.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesSamal, S. ; Das, R. R. ; Sahoo, D. ; Acharya, S. ; Panda, R. L. ; Rout, R. C.
New York, NY [u.a.] : Wiley-Blackwell
Published 1996Staff ViewISSN: 0021-8995Keywords: Chemistry ; Polymer and Materials ScienceSource: Wiley InterScience Backfile Collection 1832-2000Topics: Chemistry and PharmacologyMechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsPhysicsNotes: Schiff bases of hydroxy benzaldehydes with aliphatic and aromatic 1,2-diamines were re-sinified in HCHO in alkaline media. These resins were found to form complexes readily with Cu(II), Co(II), and Ni(II). The materials were characterized by infrared, 1H-NMR, UV-visible (UV-vis) spectral studies, and thermogravimetric analyses. The phenolic oxygen and the azomethene nitrogen were the ligating sites, one or more lattice positions in polychelates being occupied by water molecules. 1H-NMR provided evidence for bridging methylene and terminal methylol groups. The UV-vis spectra showed weak absorptions in the d - d transition range. Capacity studies of the resins indicated metal loading up to 70% at room temperature in an appropriate pH of the salt solutions. The effects of contact time, particle size of the sorbents, resin quantity, and pH on the adsorption characteristics were studied. In the pH range 3-8, the resins derived from the structurally rigid Schiff bases exhibited higher capacity for the metal ions than the resins derived from structurally flexible Schiff bases. Kinetic parameters computed from the thermogravimetric data indicated the resins to be more stable than the corresponding polychelates. © 1996 John Wiley & Sons, Inc.Additional Material: 7 Ill.Type of Medium: Electronic Resource -
5Articles: DFG German National LicensesSamal, Rajani K. ; Das, R. R. ; Nayak, M. C. ; Suryanarayana, G. V. ; Panda, G. ; Das, D. P.
New York : Wiley-Blackwell
Published 1981Staff ViewISSN: 0360-6376Keywords: Physics ; Polymer and Materials ScienceSource: Wiley InterScience Backfile Collection 1832-2000Topics: Chemistry and PharmacologyNotes: The kinetics of polymerization of acrylonitrile initiated by KHSO5 and catalyzed by Ag(I) have been investigated in an aqueous medium over the temperature range of 35-50°C. The rates of polymerization Rp have been calculated and studied with respect to monomer and initiator. The catalytic activity of various metal ions on the initiator has been determined from a comparison of Rp values. The effects of monomer, catalyst, neutral salts, various amines, and inhibitor (hydroquinone) on the initial rate as well as maximum conversion have been studied. From the kinetics results a suitable reaction scheme has been proposed.Additional Material: 5 Ill.Type of Medium: Electronic ResourceURL: