Sripat Singh College

Murshidābād, India

Sripat Singh College

Murshidābād, India
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Chakravorty A.,Sripat Singh College | Ghosh P.,University of KalyaniWest Bengal
Journal of Central European Agriculture | Year: 2014

Yield component analysis provides a framework for identifying potentially useful traits for yield improvement. A field experiment was conducted for two consecutive years to evaluate the forty four low land traditional rice cultivars for twenty three panicle yield and its attributing traits during kharif season at the Zonal Adaptive Research Station, Krishnagar, Nadia, West Bengal, India. Significant varietal differences were observed for all the characters. Among the panicle yield attributing traits, number of primary branches per panicle, number of grains on primary branches panicle-1, number of spikelets on primary branches panicle-1, grain length, grain breadth, grain thickness, kernel breadth, kernel thickness, 100 grain weight, 100 kernel weight correlated significantly and positively with panicle yield both at the genotypic and phenotypic levels. Results of path analysis showed that the direct positive effect on panicle yield was greatest for number of spikelets on secondary branches panicle-1 (0.998) which is followed by number of grains on secondary branches panicle-1 (0.948), grain length (0.755), and number of spikelets on primary branches panicle-1 (0.625), grain thickness (0.392) and fertility % of spikelets on primary branches panicle-1 (0.378). Few characters like number of primary branches panicle-1, number of spikelets panicle-1, by number of grains on primary branches panicle-1 and grain breadth showed negative direct effect on panicle yield even though the genotypic correlation coefficients on panicle yield were positive. The study revealed that the direct selection of the above said traits might be rewarding for panicle yield improvement since they revealed a true relationship with the panicle yield. ©2014 University of Zagreb - Faculty of Agriculture.All rights reserved.


Choudhury S.R.,Jadavpur University | Lee H.M.,National Changhua University of Education | Hsiao T.-H.,National Changhua University of Education | Colacio E.,University of Granada | And 2 more authors.
Journal of Molecular Structure | Year: 2010

A copper(II) malonate complex with formula [Cu(mal)(phen)(H2O)]2·3H2O (1) [H2mal = malonic acid, phen = 1,10-phenanthroline] has been synthesized and its crystal structure has been re-determined with an improved R value (the compound 1 was originally synthesized and crystallographically characterized by Kwik et al. with R = 0.047, see: J. Chem. Soc. Dalton Trans. (1986) 2529) with the water hydrogen atom positions located. This has led to the revelation that the water molecules organize around the carboxylate group of the malonate ligand forming tetramer, hexamer and octameric water cluster mimics. These cooperative hydrogen-bonding forces and various π-forces (π⋯π, Cu(II)⋯π, carbonyl⋯π) involving 1,10-phenanthroline aromatic rings determine the overall packing of the molecular units in the unit cell. There exists two identical monomers in the asymmetric unit with Z// = 2. TG measurements reveal the loss of water molecules that are all released at 120 °C. The water sorption/desorption process is reversible as supported by FTIR spectroscopic and XRPD studies. © 2010 Elsevier B.V. All rights reserved.


Nandi D.,University of South Africa | Saha I.,Sripat Singh College | Ray S.S.,South African Council for Scientific and Industrial Research | Ray S.S.,University of Johannesburg | And 2 more authors.
Journal of Colloid and Interface Science | Year: 2015

Reduced-graphene-oxide based superparamagnetic nanocomposite (GC) was fabricated and applied for the remediation of Ni(II) from an aqueous medium. The as-prepared GC was extensively characterized by Raman, TEM, AFM, SEM-EDX, SQUID, and BET analyses. Quantitative immobilization of Ni(II) in an aqueous solution by the fluorescent sensor platform of GC was explored at varying pH, doses, contact times, and temperatures. The pseudo-second-order kinetics equation governed the overall sorption process at optimized pH of 5 (±0.2). The superior monolayer sorption capacity was 228mgg-1 at 300K. Negative δG0 indicated the spontaneous sorption nature, whereas the positive δH0 resulted from an increase in entropy (positive δS0) at the solid-liquid interface during the endothermic reaction. The lower enthalpy agreed with the relatively high regeneration (approximately 91%) of the GC by 0.1M HCl, because of the formation of stable tetrahedral complex. The physisorption was well corroborated by calculated sorption energy (EDR ~7kJmol-1) and the nature of the Stern-Volmer plot of the fluorescence-quenching data with reaction time. The GC played a pivotal role as a static fluorescent sensor platform (fluorophore) for Ni(II) adsorption. Magnetic property also indicated that GC could be easily separated from fluids by exploiting its superparamagnetic property. © 2015 Elsevier Inc.


Das A.,Jadavpur University | Jana A.D.,Sripat Singh College | Seth S.K.,Indian Association for The Cultivation of Science | Dey B.,Jadavpur University | And 6 more authors.
Journal of Physical Chemistry B | Year: 2010

The μ- -μ interactions are utilized to design the solid-state assembly of host-guest complexes where guests are anions. The doubly protonated MPTPH2 (MPTP = 4′-(4-methoxyphenyl)-2,2′:6′, 2"-terpyridine) complexed with H2O and Cl- or Br - are synthesized, crystallized, and characterized by X-ray analysis. By using the density functional theory calculations which can properly describe the dispersion energy, the assembling phenomena are analyzed in terms of μ+-μ and μ-μ interactions as well as H-bonding interactions. The planar structure of MPTPH2(Cl)2· 2H2O or MPTPH2(Br)2·2H2O facilitates the crystal packing, since the μ--μ interactions play an important role in the solid-state assembly. © 2010 American Chemical Society.


Dutta D.,Jadavpur University | Jana A.D.,Sripat Singh College | Debnath M.,Jadavpur University | Bhaumik A.,Indian Association for The Cultivation of Science | And 2 more authors.
Dalton Transactions | Year: 2010

Two novel organic-inorganic hybrid tungsto- and molybdo- telurates having formula [{Na4(H2O)14}{Cu(gly)} 2][TeMo6O24] (1){gly = glycine} and [{Cu(en)2}3{TeW6O24}]·6H 2O {en = ethyline-diamine} (2) based on Anderson type heteropolyoxometalates (POMs) have been synthesized and characterized by X-ray crystallography. Common structural feature of both 1 and 2 is the presence of a unique 1D open rack-like architecture, where the disc shaped Anderson POMs act as steps and cationic Cu-organic complexes act as handles of the rack. In 1 the independent structural unit is a 1D coordination polymer with the above mentioned rack type architecture, while in 2, these independent rack-like architectures are further extended to a 2D coordination polymer. Heterogeneous catalysis for the epoxidation of cyclohexene and styrene by complexes 1 and 2 showed very good catalytic efficiency resulting epoxides of ∼60% yield, with dialcohol formed by the hydrolysis of epoxides, as the other major product (∼28%). Cyclic voltammetric studies of [{Na4(H2O) 14}{Cu(gly)}2][TeMo6O24] (1) in aqueous KCl solution indicates that the redox changes occur only on the copper centers and supported by carrying out parallel experiments on the precursors like ([Cu(gly)2]2+ and [TeMo6O 24]6-, under the identical experimental conditions. The E1/2 = 0.662, -0.142 and -0.332 V(vs. SCE) correspond to Cu(iii) → Cu(ii), Cu(ii) → Cu(i) and Cu(i) → Cu(0) reductions, respectively. Thermal analyses reveal identical phase transition reactions with an exothermic peak in the DTA curve at 380 °C for 1 and an endothermic peak appears at comparatively higher temperature (408 °C) for 2 manifesting the higher stability of tungstane based POM over the molybdenum ones. EPR as well as magnetic moment results indicate that both the complexes 1 and 2 are paramagnetic with one unpaired electron per copper(ii) ion. © The Royal Society of Chemistry 2010.


Dey B.,Jadavpur University | Das A.,Jadavpur University | Choudhury S.R.,Jadavpur University | Jana A.D.,Sripat Singh College | And 3 more authors.
Inorganica Chimica Acta | Year: 2010

One hetero-bimetallic Cu(II)/Cd(II) compound, [CdII(H2O)2][CuII(mal)2(H2O)2]n (1) (H2mal = malonic acid) has been synthesized and characterized using single crystal X-ray crystallography, thermogravimetric (TG) studies and X-ray powder diffraction (XRPD) measurements. The compound crystallizes in orthorhombic Pbcn space group having cell dimensions a = 6.6260(12) Å, b = 13.958(2) Å and c = 13.052(2) Å. The solid state structure of compound 1 demonstrates a 3D pillared layered coordination network generated through the simultaneous bridging as well as chelating mode of malonate towards the Cd(II) and Cu(II), respectively. TG analysis reveals relatively high thermal stability for the compound (decomposition temperature ∼320 °C). The thermal study also reveals that the coordinated waters attached to both the metal centers (Cd(II) and Cu(II)) are reversibly lost and gained and this behavior is also corroborated by XRPD studies. © 2009 Elsevier B.V. All rights reserved.


Pahari N.,Sripat Singh College | Guchhait A.,Panithar Gramsava Mahendra Siksha Sadan
Optik | Year: 2012

The inherent parallelism of optical signal is an advantageous feature for high-speed computations and other digital logic operations. Different techniques have been proposed for performing arithmetic, algebraic and logic operations using light as the information-carrier. Here we propose a new method for Serial Data Transfer between Registers using optical non-linear material. This system is all-optical in nature. Optical NAND gate and NOT gate are the basic building blocks of this system. © 2011 Elsevier GmbH.


Uzzal Afsan B.M.,Sripat Singh College
Journal of Advanced Research in Dynamical and Control Systems | Year: 2015

In this paper, we have initiated two concepts of topological H-entropy for topological H-dynamical system and H-closed H-dynamical system based on H- sets [13] and H-closed topological space [13] which generalize the notions of topological entropy introduced by Adler et. al. [1] and Liu et. al. [9] along with their several properties. We have shown that the two concepts of topological H-entropy are equivalent for H-closed H-dynamical system. These besides, we have established the relationship of topological H-entropy with the topological entropy due to Adler et. al. [1] and due to Liu et. al. [9]. © 2015 Institute of Advanced Scientific Research.


PubMed | University of Johannesburg, Sripat Singh College and University of South Africa
Type: | Journal: Journal of colloid and interface science | Year: 2015

Reduced-graphene-oxide based superparamagnetic nanocomposite (GC) was fabricated and applied for the remediation of Ni(II) from an aqueous medium. The as-prepared GC was extensively characterized by Raman, TEM, AFM, SEM-EDX, SQUID, and BET analyses. Quantitative immobilization of Ni(II) in an aqueous solution by the fluorescent sensor platform of GC was explored at varying pH, doses, contact times, and temperatures. The pseudo-second-order kinetics equation governed the overall sorption process at optimized pH of 5 (0.2). The superior monolayer sorption capacity was 228mgg(-1) at 300K. Negative G(0) indicated the spontaneous sorption nature, whereas the positive H(0) resulted from an increase in entropy (positive S(0)) at the solid-liquid interface during the endothermic reaction. The lower enthalpy agreed with the relatively high regeneration (approximately 91%) of the GC by 0.1M HCl, because of the formation of stable tetrahedral complex. The physisorption was well corroborated by calculated sorption energy (EDR 7kJmol(-1)) and the nature of the Stern-Volmer plot of the fluorescence-quenching data with reaction time. The GC played a pivotal role as a static fluorescent sensor platform (fluorophore) for Ni(II) adsorption. Magnetic property also indicated that GC could be easily separated from fluids by exploiting its superparamagnetic property.


Pahari N.,Sripat Singh College
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

All-optical systems for binary to Gray code conversion and Gray code to binary conversion are proposed where the input and output binary digits are expressed as the presence (=1) or the absence (=0) of a light signal. The intensity based optical XOR logic operation is used here to develop the scheme. © 2015 Copyright SPIE.

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