• Title/Summary/Keyword: D.B.H. analysis

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Efficacy of Korean Red Ginseng Supplementation on Eradication Rate and Gastric Volatile Sulfur Compound Levels after Helicobacter pylori Eradication Therapy

  • Lee, So-Jung;Park, Ji-Young;Choi, Ki-Seok;Ock, Chan-Young;Hong, Kyung-Sook;Kim, Yoon-Jae;Chung, Jun-Won;Hahm, Ki-Baik
    • Journal of Ginseng Research
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    • v.34 no.2
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    • pp.122-131
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    • 2010
  • This clinical study was performed to evaluate whether supplementation of proton pump inhibitor (PPI)-based triple therapy with Korean red ginseng can enhance Helicobacter pylori (H. pylori) eradication and reduce levels of halitosis-associated volatile sulfur compounds (VSCs) in the stomach. Seventy-six patients were randomized into an eradication regimen-only group (n=45) or an eradication regimen plus 10 weeks of Korean red ginseng supplementation group (n=31). The eradication regimen consisted of PPI b.i.d., clarithromycin 500 mg b.i.d., and amoxicillin 1 g b.i.d.. for seven days. Korean red ginseng supplementation commenced on the last day of the eradication regimen. $^{13}C$-urea breath test and halimeter measurements were performed prior to protocol repetition. By intention-to-treat analysis, the H. pylori eradication rate in the Korean red ginseng group (77.4%, 24 of 31) was higher than that in the control group (45.0%, 26 of 45). However, by per protocol analysis, the eradication rate in the Korean red ginseng group was significantly higher than that in the control group (92.3%, 24/26 vs. 69.4%, 26/38; p<0.05). H. pylori infection was significantly associated with increased VSC levels. However, VSC levels decreased significantly in the Korean red ginseng group (p<0.05). In conclusion, supplementation of triple therapy with Korean red ginseng increased the H. pylori eradication rate and led to significant reductions in VSC levels, suggesting the usefulness of this substance in combating H. pylori infection.

Analysis of Voltage Distribution in the Stator Winding of Low-Voltage Induction Motor driven by IGBT PWM Inverter (IGBT 인버터 구동 저압 유도전동기 고정자 권선의 과도전압 해석)

  • Kim, C.H.;Lee, Y.H.;An, H.J.;Hwang, D.H.;Park, D.Y.;Huh, I.G.;Choi, B.W.
    • Proceedings of the KIEE Conference
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    • 2000.07b
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    • pp.690-692
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    • 2000
  • In this paper voltage distribution in the windings of an inverter fed induction motor is studied. High frequency parameters of the induction motor are calculated using finite element analysis. With these parameters. a high frequency equivalent circuit of the inverter-cable-motor is formed. The transient analysis is performed using ATP-EMTP package to estimate the voltage distribution in the motor windings.

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Design and Characteristics Analysis of Induction machine for Diesel-Electric Hybrid Engine (디젤-전기 Hybrid 엔진용 유도기의 설계 및 특성해석)

  • Cho, Y.H.;Lee, J.B.;Koo, D.H.;Ha, H.D.;Ryu, W.H.
    • Proceedings of the KIEE Conference
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    • 1995.07a
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    • pp.27-29
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    • 1995
  • This paper presents the design and characteristics analysis of induction machine for diesel-electric hybrid vehicle powertrain. Diesel-electric hybrid vehicles are very efficacious in reduction of consumption energy, environment pollution and saftly yields with high dynamic of machines. However, their sophisticated construction requires from designers both complex made-technology and control strategy which would be able to put into practice this requirements. These problems are still considered in processing the design and analysis of induction machine. The requirements for a given volume, input power to weight ratio, high efficiency and wide speed range are met by the induction machine.

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Statistical Analysis of Characteristics of Scanning Electron Microscope (주사전자현미경 특성의 통계적 해석)

  • Kim, T.S.;Kim, W.;Kim, D.H.;Kim, B.
    • Journal of Surface Science and Engineering
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    • v.40 no.4
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    • pp.185-189
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    • 2007
  • A scanning electron microscope (SEM) is a complex system, consisting of many sophisticated components. For a systematic characterization, a $2^4$ full factorial experiment was conducted. The SEM components examined include condenser lens 1 and 2 (denoted as A and B, respectively), and Objective lens (coarse and fine-denoted as C and D respectively). A statistical analysis was conduced to investigate factor effects and variations In response surfaces. Among four factors, main effect analysis revealed that A and D were Identified as the dominant factor. Moreover, B showed conflicting effect against C. The $R^2$ of statistical regression model constructed was about 69.6%. The model generated 3D response surface plots facilitated understanding of complex tactor effects.

Concanamycin B, Active substance Against Phytophthora capsici Produced by Streptomyces neyagawaensis 38D10 Strain (Streptomyces neyagawaensis 38D10 균주가 생산하는 concanamycin B의 항고추역병 활성)

  • Kim, Chang-Jin;Lee, In-Kyoung;Yun, Bong-Sik;Yoo, Ick-Dong
    • Microbiology and Biotechnology Letters
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    • v.21 no.4
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    • pp.322-328
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    • 1993
  • During the screening of antifungal compounds from microbial secondary metabolites to control phytophthora blight of red pepper caused by Phytophthora capsici, a soil isolate, strain 38D10 was selected. Based on taxonomic studies, this strain was identified as Streptomyces neyagawaensis. The antifungal compound was purified from culture broth by HP-20 column chromatography, ethyl acetate extraction, silica gel column chromatography, HPLC and identified as concanamycin B by UV. $^1H$-NMR, $^{13}C$-NMR, SIMS analysis. Concanamycin B has strong antifungal activity against some phytopathogenic fungi but not antivacterial activity and preventive value were 50% and 100% at 125ppm and 250ppm in pot assay.

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