MONOPOLY UNIONS AND CORPORATISM : IMPLICATIONS FOR STRATEGIC TRADE POLICY

Bandyopadhyay, S.,Bandyopadhyay, S. C. 한국국제경제학회 1998 International Economic Journal Vol.12 No.4

Requirement of Protein Kinase C Pathway during progesterone-induced Oocyte Maturation in Amphibian, Rana dybowskii

Bandyopadhyay, Jaya,Bandyopadhyay, Arun,Kang, Hae-Mook,Kwon, Hyuk-Bang,Choi, Hueng-Sik The Korean Society for Integrative Biology 1998 Korean journal of biological sciences Vol.2 No.1

The present study investigated the involvement of the phospholipase C (PLC) and protein kinase C (PKC) signaling pathways during progesteroneinduced meiotic maturation in amphibian (Rana dybowskii) oocytes. Prosesterone-induced germinal vesicle breakdown (GVBD) of oocytes was significantly inhibited by a PKC inhibitor, staurosporine and a PLC inhibitor, U73122, in a dose-dependent manner. In contrast, U73343, an inactive analogue of U73122, was ineffective in suppressing GVBD. PKC activity in oocytes reached a maximum level at 30 min after progesterone stimulation and this elevated PKC activity was effectively suppressed by U73122 or staurosporine, suggesting that the activation of PKC enzyme is closely linked to PLC signaling during oocyte maturation. In addition, these inhib itors blocked the maturation promoting factor (MPF) activity which appeared in oocytes in response to progesterone, suggesting that PKC activation is an important signal for MPF activity. Therefore, this study demonstrates that the activation of PKC via PLC signaling is directly linked to an intracellular protein kinase cascade related to the appearance of MPF activity during meiotic maturation in amphibian (Rana dybowskii) oocytes.

Labor Unions and International Market Share Rivalry : Does Corporatism Matter?

Bandyopadhyay, Subhayu,Bandyopadhyay, Sudeshna Champati 세종대학교 국제경제연구소 1996 Journal of Economic Integration Vol.11 No.2

This paper studies the effects of corporatism on national welfare and optimal trade policy under monopoly unionism and efficient contracting. The results are remarkably different for the two models considered. Under free trade, corporatism is welfare augmenting in the monopoly union case while it has no effect on welfare in the efficient contract case. The optimal subsidy is increasing in the degree of corporatism under efficient contracting and independent of the degree of corporatism in the monopoly union case.(JEL: F13, J50)

Nonparametric homogeneity test based on ridit reliability functional

Uttam Bandyopadhyay,Debajit Chatterjee 한국통계학회 2015 Journal of the Korean Statistical Society Vol.44 No.4

The paper provides nonparametric test procedures for comparing K (>2) unknown univariate populations, in which the tests are formulated by using consistent estimators of the ridit reliability functionals (see, for example, Bandyopadhyay and De, 2011) for comparing more than two populations. The tests are asymptotically distribution free and can be used for data on both discrete and continuous random variables. An extensive numerical study is performed to compare the proposed test with the nonparametric tests, obtained from Konietschke et al. (2012), in terms of type I error rate and power. A data study illustrates the use of such tests.

Labor Unions and Inkrnationa1 Market Share Rivalry: Does Corporatism Matter?

( Subhayu Bandyopadhyay ),( Sudeshna Champati Bandyopadhyay ) 세종대학교 경제통합연구소 1996 Journal of Economic Integration Vol.11 No.2

This paper studies the effects of corporatism on national welfare and optimal trade policy under monopoly unionism and efficient contracting. The results are remarkably different for the two models considered. Under free trade, corporatism is welfare augmenting in the monopoly union case while it has no effect on welfare in the efficient contract case. The optimal subsidy is increasing in the degree of corporatism under efficient contracting and independent of the degree of corporatism in the monopoly union case. (JEL: F13, J50)

Regulation of Calcineurin, a Calcium/Calmodulin-dependent Protein Phosphatase, in C. elegans

Jaya Bandyopadhyay,Arun Bandyopadhyay,Jungsoo Lee 한국분자세포생물학회 2004 Molecules and cells Vol.18 No.1

Calcineurin is a calcium/calmodulin-dependent serine/ threonine protein phosphatase. It is a heterodimeric protein consisting of a catalytic subunit calcineurin A, and a regulatory calcium-binding subunit, calcineurin B. The primary sequence of both subunits and heterodimeric structure is highly conserved from yeast to mammals. Calcineurin has long been implicated in various signaling pathways. Calcineurin genes (cna- 1/tax-6 and cnb-1) have been identified in the nematode Caenorhabditis elegans, which share high homology with their Drosophila and mammalian counterparts. C. elegans calcineurin binds calcium and functions as a heterodimeric protein phosphatase establishing its biochemical conservation. Calcineurin expresses in diverse tissues implicating its important role in various physiological processes. This review will focus in brief on the expression pattern and regulation of calcineurin including its effect on growth and development, locomotion, egg-laying, and sensory responses.

Facile synthesis of 4,4′-diaminostilbene-2,2′-disulfonic-acid-grafted reduced graphene oxide and its application as a high-performance asymmetric supercapacitor

Bandyopadhyay, Parthasarathi,Nguyen, Thanh Tuan,Kim, Nam Hoon,Lee, Joong Hee Elsevier 2018 Chemical engineering journal Vol.333 No.-

<P><B>Abstract</B></P> <P>In this study, a novel 4,4′-diaminostilbene-2,2′-disulfonic acid (DASDSA)-functionalized reduced graphene oxide (DASDSA-rGO) was prepared via simple refluxing method involving GO and DASDSA in the presence of ammonia solution followed by reduction with hydrazine hydrate. FTIR spectroscopy, Raman scattering, X-ray photoelectron spectroscopy (XPS), and XRD analyses confirmed the successful functionalization and reduction of GO in DASDSA-rGO. The FTIR and XPS analyses also confirmed covalent bond formation between DASDSA and graphene. The DASDSA spacer successfully minimized the restacking of rGO sheets as observed from FESEM analysis. Several redox transition states and SO<SUB>3</SUB>H groups of grafted DASDSA moieties provided excellent pseudocapacitance performance of the DASDSA-rGO electrode. The DASDSA-rGO electrode showed high specific capacitance (<I>C</I>) value of 1042Fg<SUP>−1</SUP> at a current density of 1Ag<SUP>−1</SUP>, good cycling stability (95% capacitance retention after 3000 cycles), and excellent rate capability in a three-electrode setup. The DASDSA-rGO (positive electrode) and rGO (negative electrode) were assembled to prepare an asymmetric supercapacitor (ASC) device. The power density values of the ASC device were calculated to be 650 and 7800Wkg<SUP>−1</SUP> at energy density values of 37.37 and 23.78Whkg<SUP>−1</SUP>, respectively. The ASC device exhibited <I>C</I> value of 159Fg<SUP>−1</SUP> at 1Ag<SUP>−1</SUP> and displayed 86% retention in <I>C</I> after 8500 cycles. The EIS data of the three-electrode system and ASC device were fitted with Z-views to determine the different resistance components after a different number of charge–discharge cycles in a cycling stability test.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A new functionalized reduced graphene oxide (DASDSA-rGO) was prepared. </LI> <LI> An asymmetric supercapacitor (ASC) device was assembled using DASDSA-rGO and rGO. </LI> <LI> ASC exhibited an excellent specific capacitance of about 159Fg<SUP>−1</SUP> at 1Ag<SUP>−1</SUP>. </LI> <LI> ASC showed excellent energy power density of 37.37Whkg<SUP>−1</SUP> and rate capability. </LI> <LI> The device exhibited 86% retention in specific capacitance after 8500 cycles. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Graphitic carbon nitride modified graphene/NiAl layered double hydroxide and 3D functionalized graphene for solid-state asymmetric supercapacitors

Bandyopadhyay, Parthasarathi,Li, Xuyang,Kim, Nam Hoon,Lee, Joong Hee Elsevier 2018 Chemical engineering journal Vol.353 No.-

<P><B>Abstract</B></P> <P>A series of proton-functionalized graphitic carbon nitride (<I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>) modified reduced graphene oxide (rGO)/nickel-aluminium layered double hydroxide (LDH) composites (<I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO/LDH-1 and <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO/LDH-2) were prepared by a novel scalable strategy using different amounts of <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO as a conductive matrix. The morphological analyses reveal that the LDH sheets are gradually assembled on the <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO matrix. The <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO and LDH mutually minimize their self-aggregation in <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO/LDH composite. The porous skeleton of <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO/LDH-1 (highest loading of <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO matrix) produces a high surface area (240 m<SUP>2</SUP>/g) and mesopores (diameter; 2.2 nm). The <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO/LDH-1 electrode generates a specific capacitance value of 1190 F g<SUP>−1</SUP> at 1 A g<SUP>−1</SUP>, excellent rate performance (71% at 10 A g<SUP>−1</SUP>), and good cycling stability (90% after 3000 cycles), in a three-electrode setup. Hierarchical <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB> functionalized rGO composite (3D-<I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>@rGO) was used as a negative material. The 3D-<I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>@rGO produces an excellent capacitance of 345 F g<SUP>−1</SUP> at 1 A g<SUP>−1</SUP>, high rate capability (74% at 10 A g<SUP>−1</SUP>) and good cyclic stability (90% after 3000 cycles). The <I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>-rGO/LDH-1 and 3D-<I>f</I>gC<SUB>3</SUB>N<SUB>4</SUB>@rGO were assembled to fabricate a solid-state asymmetric supercapacitor device using KOH/PVA gel electrolyte. The device operates within the potential window of 1.6 V and produces the highest energy density and power density of 54.76 W h kg<SUP>−1</SUP> and 12031.92 W kg<SUP>−1</SUP>, respectively. The solid-state device shows an excellent cycle life of 91% after 7000 cycles, and it can power a red LED, suggesting very efficient for practical application.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Graphitic carbon nitride modified graphene/Ni-Al LDH was used as positive material. </LI> <LI> 3D graphitic carbon nitride functionalized graphene was used as negative material. </LI> <LI> An asymmetric solid-state supercapacitor (ASC) was successfully fabricated. </LI> <LI> ASC exhibits excellent capacitance (154 F g<SUP>−1</SUP> at 1 A g<SUP>−1</SUP>) and rate capability. </LI> <LI> ASC shows high energy (54.76 W h kg<SUP>−1</SUP>) and power (12031.92 W kg<SUP>−1</SUP>) densities. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Influence of Weather Factors on the Incidence of the Mulberry Aleyrodid, Dialeuropora decempuncta (Quaintance and Baker) and Their Relation to Yield Loss

Bandyopadhyay U. K.,Santhakumar M. V.,Sahu P. K.,Saratchandra B. Korean Society of Sericultural Science 2005 International Journal of Industrial Entomology Vol.11 No.2

The seasonal occurrence and influence of abiotic factors viz., maximum and minimum temperature, maximum and minimum humidity and rainfall on population fluctuation of aleyrodid, Dialeuropora decempuncta on a evolved mulberry (Morus alba L.) variety known to be susceptible to aleyrodid infestation was assessed during the period from 1999 - 2001 in twenty-five villages under nine blocks of Malda district of West Bengal. The results indicate that the aleyrodid population is practically very low or absent during January to June and thereafter increases gradually. The increase in population of various stages of aleyrodid is significantly correlated with increase in previous 7 days of average maximum relative humidity.

Right-handed sneutrino dark matter in U(1)′ seesaw models and its signatures at the LHC

Bandyopadhyay, Priyotosh,Chun, Eung Jin,Park, Jong-Chul Springer-Verlag 2011 Journal of high energy physics Vol.2011 No.6