Search Results - (Author, Cooperation:S. Chowdhury)
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1Latest Papers from Table of Contents or Articles in PressP K Mahto, R Chaudhary, S Chowdhury, Md. Alham and S R Dutta
Institute of Physics (IOP)
Published 2018Staff ViewPublication Date: 2018-07-15Publisher: Institute of Physics (IOP)Print ISSN: 1757-8981Electronic ISSN: 1757-899XTopics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressA. Chakraborty ; D. Wang ; Y. W. Ebright ; Y. Korlann ; E. Kortkhonjia ; T. Kim ; S. Chowdhury ; S. Wigneshweraraj ; H. Irschik ; R. Jansen ; B. T. Nixon ; J. Knight ; S. Weiss ; R. H. Ebright
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-08-04Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: DNA Polymerase III/*chemistry/drug effects ; Fluorescence Resonance Energy Transfer/methods ; *Gene Expression Regulation, Bacterial ; Protein Conformation ; *Transcription, GeneticPublished by: -
3Latest Papers from Table of Contents or Articles in PressPannhorst, K., Wei, H., Yezid, H., He, J., Chowdhury, S. I.
The American Society for Microbiology (ASM)
Published 2018Staff ViewPublication Date: 2018-06-14Publisher: The American Society for Microbiology (ASM)Print ISSN: 0022-538XElectronic ISSN: 1098-5514Topics: MedicinePublished by: -
4Latest Papers from Table of Contents or Articles in PressAbou-Elkacem, L., Wang, H., Chowdhury, S. M., Kimura, R. H., Bachawal, S. V., Gambhir, S. S., Tian, L., Willmann, J. K.
The American Association for Cancer Research (AACR)
Published 2018Staff ViewPublication Date: 2018-04-04Publisher: The American Association for Cancer Research (AACR)Print ISSN: 1078-0432Electronic ISSN: 1557-3265Topics: MedicinePublished by: -
5Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-05-10Publisher: Institute of Physics Publishing (IOP)Electronic ISSN: 1748-0221Topics: PhysicsPublished by: -
6Articles: DFG German National LicensesSkuras, E. ; Long, A. R. ; Chowdhury, S. ; Rahman, M.
[S.l.] : American Institute of Physics (AIP)
Published 2001Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: We have studied the magnetoresistance in an inclined magnetic field of a two-dimensional electron gas modulated by a two-dimensional array of thin cobalt nanostructures. At low fields, hysteretic behavior due to the magnetization of the elements was observed, and at higher fields magnetic commensurability (Weiss) oscillations were clearly seen. These magnetoresistance features only occurred when the in-plane component of the field was in the current flow direction. The commensurability oscillations behave exactly as predicted in a recent theory of two-dimensional surface superlattices. © 2001 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesRanjan, P. ; Hui, A. K. ; Chowdhury, S. ; Paul, R. K. ; Basu, S. ; Bhattacharya, P. S. ; Bal, A. ; Ray, R. ; Majumdar, S. K. ; Mukhopadhyay, N. K.
[S.l.] : American Institute of Physics (AIP)
Published 1994Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: Taking advantage of the iron core of the Saha Institute of Nuclear Physics (SINP) tokamak, a single turn primary coil was used to generate low power ohmically excited audio-frequency hydrogen plasma to clean the SINP tokamak vacuum vessel of adsorbed gases. This scheme allowed us to easily use available low voltage power transistors and other existing power supply components to generate audio-frequency voltage. Using this scheme the discharge cleaning system was tested successfully in a short period of 2–3 months. The system has been utilized to carry out initial discharge cleaning of the vessel as well as daily cleaning to achieve full designed parameters of our tokamak.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesChaudhuri, S. K. ; Halder, K. ; Chowdhury, S. R. ; Bagchi, K.
Oxford, UK : Blackwell Publishing Ltd
Published 1969Staff ViewISSN: 1471-0528Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineType of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesGrimsrud, E. P. ; Chowdhury, S. ; Kebarle, P.
College Park, Md. : American Institute of Physics (AIP)
Published 1985Staff ViewISSN: 1089-7690Source: AIP Digital ArchiveTopics: PhysicsChemistry and PharmacologyNotes: The rate constant kd and its temperature dependence for thermal electron detachment from the azulene negative ion Az−(arrow-right-and-left)ad Az+e was determined by observing, at suitably high temperature, the decay of Az− with time. A pulsed electron beam, high ion source pressure mass spectrometer was used. The reaction mixtures typically contained 4 Torr CH4 as bath gas and azulene and perfluoromethylcyclohexane (C7F14) at pressures of a few mTorr. The C7F14 which has a large electron attachment coefficient was used as electron scavenger in order to suppress the (re)attachment of electrons to Az. The experimental data points for kd could be fitted equally well with the expressions kd =2.5×106 T3/2 (s−1)exp[−14.5 (kcal/mol)/RT] and kd =1.14×1011 (s−1)exp[−15.7 (kcal/mol)/RT]. The activation energies are close to the electron affinity E.A.(Az)=16 kcal/mol obtained in earlier determination from this laboratory. Consistent values for the equilibrium constant K of the attachment–detachment equilibrium can be obtained when K is evaluated from E.A.(Az) and third law entropies of the reactants and from K=ka/kd, where ka and kd are experimentally determined quantities. The ka values were taken from Christophorou.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesGrimsrud, E. P. ; Chowdhury, S. ; Kebarle, P.
College Park, Md. : American Institute of Physics (AIP)
Published 1985Staff ViewISSN: 1089-7690Source: AIP Digital ArchiveTopics: PhysicsChemistry and PharmacologyNotes: Measurements of the equilibria (1): A−+B=A+B− with a pulsed electron high pressure mass spectrometer lead to ΔG01, ΔH01, and ΔS01. Equilibria involving SF6 as A and perfluoromethylcyclohexane C7F14 provide electron affinities E.A.(SF6)=1.05±0.1 eV and E.A.(C7F14)=1.06±0.15 eV. The kinetics of reactions (1) involving the above two compounds were studied. The rate constants kf for SF−6 +B=SF6+B− were found to increase with exothermicity of the reaction. The temperature dependence for kf was determined. B compounds leading to high exothermicities were associated with kf at the collision limit and essentially no temperature dependence. B of progressively lower electron affinity led to kf below the collision limit and negative temperature dependence, while B with the lowest E.A. but still leading to exothermic reaction produced lowest kf with positive temperature dependence. A model is provided explaining the above behavior. The known large change of geometry between SF−6 and SF6 introduces an internal barrier in the reaction coordinate for the reactions (1) involving SF6.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesWilliams, S. ; Malik, A. ; Chowdhury, S. ; Chauhan, S.
Oxford, UK : Blackwell Publishing Ltd
Published 2002Staff ViewISSN: 1369-1600Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Abstract This paper aims to describe the sociocultural context of areca nut use through exploring people's norms and values and the meaning underlying a wide range of different practices. A historical review is followed by an examination of more recent evidence, including quantitative and qualitative research conducted in the United Kingdom. It is concluded that some reports involving the various uses of areca nut and the conclusions drawn are confusing and that future studies need to be more explicit. While a sound scientific background is required, important sociocultural and religious issues around areca nut use must also be understood if health promotion initiatives are to be considered.Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] THE Liebermann–Burchard reaction for steroids1, which consists in adding a few drops of acetic anhydride and concentrated sulphuric acid to the chloroform solution of the sterol, is not only used as a qualitative test for it but also for its quantitative estimation in blood, etc. ...Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesPurification and characterization of an α-d-galactosyl-binding lectin from Artocarpus lakoocha seedsStaff View
ISSN: 0008-6215Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 0008-6215Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 0031-9422Keywords: Artocarpus lakoocha ; Moraceae ; artocarpin ; combining sites ; galactomannan ; interaction. ; lectin ; seedsSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 0009-2614Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesKato, Y. ; Motoi, Y. ; Taniai, K. ; Kadono-Okuda, K. ; Yamamoto, M. ; Higashino, Y. ; Shimabukuro, M. ; Chowdhury, S. ; Xu, J. ; Hiramatsu, M. ; Sugiyama, M. ; Yamakawa, M.
Amsterdam : ElsevierStaff ViewISSN: 0965-1748Keywords: Antibacterial protein ; Cecropin ; Endotoxin ; Insect immunitySource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 0277-9536Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineType of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesStaff View
ISSN: 0300-9084Keywords: artocarpin ; chemical modification ; lectin ; specific activitySource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesStaff View
ISSN: 0168-1176Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: