• Title/Summary/Keyword: S/H

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INTEGRAL REPRESENTATIONS FOR SRIVASTAVA'S HYPERGEOMETRIC FUNCTION HC

  • Choi, Junesang;Hasanov, Anvar;Turaev, Mamasali
    • Honam Mathematical Journal
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    • v.34 no.4
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    • pp.473-482
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    • 2012
  • While investigating the Lauricella's list of 14 complete second-order hypergeometric series in three variables, Srivastava noticed the existence of three additional complete triple hypergeo-metric series of the second order, which were denoted by $H_A$, $H_B$ and $H_C$. Each of these three triple hypergeometric functions $H_A$, $H_B$ and $H_C$ has been investigated extensively in many different ways including, for example, in the problem of finding their integral representations of one kind or the other. Here, in this paper, we aim at presenting further integral representations for the Srivatava's triple hypergeometric function $H_C$.

INTEGRAL REPRESENTATIONS FOR SRIVASTAVA'S HYPERGEOMETRIC FUNCTION HA

  • Choi, June-Sang;Hasanov, Anvar;Turaev, Mamasali
    • Honam Mathematical Journal
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    • v.34 no.1
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    • pp.113-124
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    • 2012
  • While investigating the Lauricella's list of 14 complete second-order hypergeometric series in three variables, Srivastava noticed the existence of three additional complete triple hypergeometric series of the second order, which were denoted by $H_A$, $H_B$ and $H_C$. Each of these three triple hypergeometric functions $H_A$, $H_B$ and $H_C$ has been investigated extensively in many different ways including, for example, in the problem of finding their integral representations of one kind or the other. Here, in this paper, we aim at presenting further integral representations for the Srivatava's triple hypergeometric function $H_A$.

NOTE ON SRIVASTAVA'S TRIFLE HYPERGEOMETRIC SERIES HA AND HC

  • Kim, Yong-Sup;Rathie, Arjun-K.;Choi, June-Sang
    • Communications of the Korean Mathematical Society
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    • v.18 no.3
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    • pp.581-586
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    • 2003
  • The aim of this note is to consider some interesting reducible cases of $H_{A}\;and\;H_{C}$ introduced by Srivastava who actually noticed the existence of three additional complete triple hypergeometric functions $H_{A},\;H_{B},\;and\;H_{C}$ of the second order in the course of an extensive investigation of Lauricella's fourteen hypergeometric functions of three variables.

INTEGRAL REPRESENTATIONS FOR SRIVASTAVA'S HYPERGEOMETRIC FUNCTION HB

  • Choi, June-Sang;Hasanov, Anvar;Turaev, Mamasali
    • The Pure and Applied Mathematics
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    • v.19 no.2
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    • pp.137-145
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    • 2012
  • While investigating the Lauricella's list of 14 complete second-order hypergeometric series in three variables, Srivastava noticed the existence of three additional complete triple hypergeometric series of the second order, which were denoted by $H_A$, $H_B$ and $H_C$. Each of these three triple hypergeometric functions $H_A$, $H_B$ and $H_C$ has been investigated extensively in many different ways including, for example, in the problem of finding their integral representations of one kind or the other. Here, in this paper, we aim at presenting further integral representations for the Srivatava's triple hypergeometric function $H_B$.

Wide-Field Survey IR Space Telescope, MIRIS Design

  • Han, W.;Park, J.H.;Nam, U.W.;Yuk, I.S.;Jin, H.;Lee, S.H.;Park, Y.S.;Park, S.J.;Lee, D.H.;Lee, C.H.;Jeong, W.S.;Ree, S.W.;Park, J.O.;Lee, S.H.;Lee, H.M.;Lee, H.M.;Matsumoto, T.
    • Bulletin of the Korean Space Science Society
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    • 2008.04a
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    • pp.27.1-27.1
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    • 2008
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The Developmental Characterization of the Sericin jam(Bombyx mori), a Mutant in the Synthesis and Secretion of Fibroin (세리신잠(Nd-s. $Nd^H$의 발육 특성)

  • 김수연;손해룡
    • Journal of Sericultural and Entomological Science
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    • v.45 no.1
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    • pp.6-9
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    • 2003
  • This experiment was done to know developmental characteristics of Sericin jam. Incubation periods were 10 day 2 hr, and 10 day 1 hr. 11 day 1 hr for Nd-s jam, N $d^{H}$ jam, and Baegok jam, respectively. Hatching rates were 83.9, 83.3 and 96.0% for Nd-s jam, N $d^{H}$ jam, and Baegok jam. Larval periods were, 20 days 1 hr for Nd-s jam, 20 days 5 hrs for N $d^{H}$ jam, and 22 days 12 hrs for Baegok jam. Death rate of larvae was highest in N $d^{H}$ iam, followed by Nd-s jam and Baegok jam. Pupation rate was highest in Baegok Jam followed by Nd-s jam and that of N $d^{H}$ jam was the lowest among the three. Cocoon weight was 1.39, 1.08, and 2.01 g for Nd-s jam, N $d^{H}$ jam, and Baegok jam, respectively. Shell weight were 13, 3, and 48 cg for Nd-s jam, N $d^{H}$ jam, and Baegok jam. Cocoon shell ratios were 9.0% for Nd-s jam, 2.8% for N $d^{H}$ jam and 23.9% for Baegok jam. Cocoon sizes were 30.6${\times}$15.8 mm for Nd-s jam, 24.7${\times}$14.9 mm for N $d^{H}$ jam and 35.8 ${\times}$ 20.5 mm(1${\times}$w) for Baegok jam.w) for Baegok jam.

pH Stress Alters Cytoplasmic Membrane Fluidity and atpB Gene Expression in Streptococcus mutans (pH stress가 Streptococcus mutans의 형질막 유동성 및 atpB 유전자 발현에 미치는 영향)

  • Cho, Chul Min;Jung, Seung Il;Kim, Myung Sup;Lee, Sae A;Kang, Jung Sook
    • Journal of Life Science
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    • v.27 no.1
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    • pp.15-22
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    • 2017
  • Streptococcus mutans (S. mutans), which plays a major role in the etiology of human dental caries, is able to tolerate exposure to acid shock in addition to its acidogenicity. We investigated the effects of pH stress on membrane fluidity, activities and expression levels of F-ATPase, and proton permeability in S. mutans. Using 1,6-diphenyl-1,3,5-hexatriene, we observed membrane ordering at pH 4.8 and pH 8.8. The ordering effects were larger at pH 4.8 in cytoplasmic membranes isolated from S. mutans (CMSM). Increasing pH resulted in a decrease in the activities and expression levels of F-ATPase. The proton permeability was decreased at both acidic and alkaline pHs, and the lowest permeability was observed at pH 4.8. The lower permeability at pH 8.8 than pH 6.8 is likely to be caused by the decreased proton influx due to the decreased CMSM fluidity. In addition, it seems to be evident that extremely low permeability at pH 4.8 was caused by the decreased proton influx due to the decreased CMSM fluidity as well as the increased proton efflux due to the increased activity and expression level of F-ATPase. It is likely that CMSM fluidity and F-ATPase activity are two major key factors that determine proton permeability in S. mutans. We suggest that CMSM fluidity plays an important role in the determination of proton permeability, which sheds light on the possibility of using nonspecific membrane fluidizers, e.g., ethanol, for anti-caries purposes.

Development of a MEMS-based H2S Sensor with a High Detection Performance and Fast Response Time

  • Dong Geon Jung;Junyeop Lee;Dong Hyuk Jung;Won Oh Lee;Byeong Seo Park;Daewoong Jung
    • Journal of Sensor Science and Technology
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    • v.32 no.4
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    • pp.207-212
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    • 2023
  • H2S is a toxic and harmful gas, even at concentrations as low as hundreds of parts per million; thus, developing an H2S sensor with excellent performance in terms of high response, good selectivity, and fast response time is important. In this study, an H2S sensor with a high response and fast response time, consisting of a sensing material (SnO2), an electrode, a temperature sensor, and a micro-heater, was developed using micro-electro-mechanical system technology. The developed H2S sensor with a micro-heater (circular type) has excellent H2S detection performance at low H2S concentrations (0-10 ppm), with quick response time (<16 s) and recovery time (<65 s). Therefore, we expect that the developed H2S sensor will be considered a promising candidate for protecting workers and the general population and for responding to tightened regulations.