• Title/Summary/Keyword: H.I.V.D.

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154kV급 인텔리전트 변전소 구축 (Construction of Intelligent Substation for 154kV Class)

  • 정영환;양대일;김정배;송원표;최인혁;김정호;이동일
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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    • pp.33-35
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    • 2005
  • We perform intelligent substation construction of 154kV class with KEPRI. The intelligent substation is build in Gochang 765kV testing facility and consists of electronic instruments, digital control panel, remote monitoring and diagnosis system and digital relay system. Rogowski coil type CT(RCT) and capacitive voltage divider(CVD) are applicable for instrument transformer of conventional type. Digital control panel(DCP) replaces local panel which is drived by mechanical operation. For monitoring condition of GIS and TR, various sensors are used. In this paper, we report the synopsis and the progress state of project.

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154kV급 인텔리전트 변전소 구축 (Construction of Intelligent Substation for 154kV Class)

  • 정영환;양대일;김정배;최인혁;김정호;이동일
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 추계학술대회 논문집 전력기술부문
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    • pp.129-130
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    • 2005
  • We perform intelligent substation construction of 154kV class with KEPRI. The intelligent substation is build in Gochang 765kV testing facility and consists of electronic instruments, digital control panel, remote monitoring and diagnosis system, and digital relay system. Rogowski coil type CT(RCT) and capacitive voltage divider(CVD) are applicable for instrument transformer of conventional type. Digital control panel(DCP) replaces local panel which is drived by mechanical operation. For monitoring rendition of GIS and TR, various sensors are used. In this paper, we report the synopsis and the progress state of project.

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두침(頭鍼)을 시행한 요추간판탈출증 환자 30례에 대한 임상고찰(臨床考察) (A Clinical Report on 30 Cases with H.I.V.D by Scalp Acupuncture)

  • 장석근;김영화;강재희;김정호;임윤경;이현;이병렬
    • Journal of Acupuncture Research
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    • 제20권5호
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    • pp.252-260
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    • 2003
  • Objective : The purpose of this report is to examine the effects of Scalp Acupuncture therapy in the H.I.V.D patients. Methods : We investigated 30 patients suffering from low back pain with sciatica which were admitted to Cheonan O. M. hospital from Aug. 1, 2001 to Jan. 31. 2002. 30 patients had a diagnosis of herniated lumbar intervertebral disc by Lumbar-C.T or Lumbar-M.R.I. we treated 30 patients by Scalp Acupuncture therapy. Results : 1. We operated Scalp Acupuncture on the foot-motion sensory area(족운동감각구), the sensory area(감각구) 2. In the result of treatment due to clinical symptoms, leg radiating pain was more effective than any other clinical symptoms. 3. The efficacy of Scalp Acupuncture therapy was 83.3%(when we set a standard things more than fair) and 63.3%(when we set a standard things more than good). Conclusions: The Scalp Acupuncture therapy is effective of H.I.V.D patients, but we thought that it needed to prove effects of Scalp Acupuncture therapy for efficient application by more clinical reports.

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고주파용 4H-SiC MESFET 제작 및 측정 (Fabrication and Measurement of 4H-SiC MESFET for High Friquency Applications)

  • 김재권;송남진;김태운;범진욱;안철
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2002년도 하계종합학술대회 논문집(2)
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    • pp.33-36
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    • 2002
  • MESFET was fabricated using 4H-SiC substrates and epitaxy The DC characteristics of 0.5 urn gate length, 400 urn gate width MESFET had $I_{dss}$=200 ㎃/mm, maximum transconductance of 12 ㎳/mm at Vrs=-4 V, V, Is=27 V. Thc device had an fT of 2.5 GHz and $f_{mdx}$ of 13.3 GHz at $V_{ds}$ =27 V and $V_{g}$=-4 V. The fabrication and characterization of this device are discussed.d.d.d.

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RANDOMLY ORTHOGONAL FACTORIZATIONS OF (0,mf - (m - 1)r)-GRAPHS

  • Zhou, Sizhong;Zong, Minggang
    • 대한수학회지
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    • 제45권6호
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    • pp.1613-1622
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    • 2008
  • Let G be a graph with vertex set V(G) and edge set E(G), and let g, f be two nonnegative integer-valued functions defined on V(G) such that $g(x)\;{\leq}\;f(x)$ for every vertex x of V(G). We use $d_G(x)$ to denote the degree of a vertex x of G. A (g, f)-factor of G is a spanning subgraph F of G such that $g(x)\;{\leq}\;d_F(x)\;{\leq}\;f(x)$ for every vertex x of V(F). In particular, G is called a (g, f)-graph if G itself is a (g, f)-factor. A (g, f)-factorization of G is a partition of E(G) into edge-disjoint (g, f)-factors. Let F = {$F_1$, $F_2$, ..., $F_m$} be a factorization of G and H be a subgraph of G with mr edges. If $F_i$, $1\;{\leq}\;i\;{\leq}\;m$, has exactly r edges in common with H, we say that F is r-orthogonal to H. If for any partition {$A_1$, $A_2$, ..., $A_m$} of E(H) with $|A_i|=r$ there is a (g, f)-factorization F = {$F_1$, $F_2$, ..., $F_m$} of G such that $A_i\;{\subseteq}E(F_i)$, $1\;{\leq}\;i\;{\leq}\;m$, then we say that G has (g, f)-factorizations randomly r-orthogonal to H. In this paper it is proved that every (0, mf - (m - 1)r)-graph has (0, f)-factorizations randomly r-orthogonal to any given subgraph with mr edges if $f(x)\;{\geq}\;3r\;-\;1$ for any $x\;{\in}\;V(G)$.

자외선 조사방법이 육계 병아리의 간장과 골격중 Vitamin $D_{3}$ 및 25-Hydroxyvitamin $D_{3}$ 농도에 미치는 영향 (Influence of UV Irradiation Procedures on the Concentration of Vitamin $D_{3}$ and 25-Hydroxyvitamin $D_{3}$ in the Liver and Skeleton of Broiler Chicks)

  • 장윤환;이은택
    • 한국가금학회지
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    • 제21권3호
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    • pp.157-168
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    • 1994
  • This study was carried out to elucidate the time course variation of vitamin $D_{3}$ (V$D_{3}$) and 25-hydroxyvitamin $D_{3}$ [25(OH)$D_{3}$] contents in the liver and skeleton of 3-wk old broiler chicks when treated with different UV irradiation procedure. Day-old Hubbard chicks were fed vitamin D deficient diet for 3 wk and exposed to medium wave ultraviolet(UVB) light with different irradiation procedures. Procedure I was 30 min continuous irradiation(O.204 mJ /$cm^{2}$) and Procedure II was three seperate 10 min irradiation with 12 h intervals, and Procedure III was three seperate 10 min irradiation with 24 h intervals. The liver and skeleton samples were collected at 10 different times between 0000~2400 h after the last irradiation. The V$D_{3}$ and 25(OH)$D_{3}$ fractions wereseparated by Sep-Pak silica cartridge and the concentrations were determined by normal phase HPLC. The mean content of V$D_{3}$ in the liver of the birds treated by Procedure II was 6.68 ng /g, which was higher than 5.60 and 5.30 ng /g from Procedure I and Ill, respectively(P<.O5). With regard to the effect of elapsed time after UVB irradiation on the V$D_{3}$ concentration of the liver, 96 h treatment showed the highest value(13.08 ng/g)(P<.05). There was a significant(P$D_{3}$ were significantly(P$D_{3}$ in the skeleton of tibia and femur, there were no significant differences among Procedure I, II and III, but significant differences were found among those from various elapsed time after irradiation, The highest value was shown at 96 h(O.99 ng /g) treatment, and interaction between irradiation procedure and elapsed time was not significant. With regard to the mean content of 25(OH)$D_{3}$ in bone, the Procedure II(18.79 ng /g) and III(17.73 ng /g) showed higher values than Procedure I did (P<.05), and the 12 h elapsed time showed the highest value(31.17 ng /g) among 10 treatments (P<.05), however, there was no significant interaction between exposing procedure and elapsed time. In conclusion, the Procedure II would he more desirable than Procedure I or III to produce more V$D_{3}$ and 25(OH)$D_{3}$ in the liver and skeleton of birds by exposing to the UVB light. Also, it was verified that 25(OH)$D_{3}$ increases more quickly than V$D_{3}$ in both tissues tested and is utilized more quickly to recover from the rickets of chicks.

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요추간판탈출증(腰椎間板脫出症) 환자(患者)의 추나치료(推拿治療) 효과(效果)에 대(對)한 임상적(臨床的) 고찰(考察) (The Clinical Study on the Effect of Chuna Treatment for Patients with Herniated Intervertebral Disc of Lumbar Spine)

  • 김수장;장형석;김성용;신준식
    • 대한추나의학회지
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    • 제2권1호
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    • pp.93-109
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    • 2001
  • Objectives : The aim of present study is to estimate clinical outcome of Chuna treatment and Chuna medicine treatment for patients with H.I.V.D(Herniated Intervertebral Disc) of lumbar spine according to the character of patients and the steps of Chuna therapy, and therefore suggest a prospective, desirable Chuna treatment and patient guidance. Methods : We investigated the 258 cases of outpatients who were diagnosed as the H.I.V.D. on lumbar C.T. or MRI and were treated more than seven times with chuna treatment and more than one time with Chuna medicine treatment In Jaseng Oriental Medicine Hospital from September 1, 1999 to December 31, 2000. We evaluated the subjective symptoms by Hudgin's classification. For the sake of the more objective evaluation for before and after treatment, we calculated the Improvement index and ratio of the four parts to estimate the pain and functional disorder In before and after treatment by Macnab's criteria. Results & Conclusion : The improvement index and ratio showed that the conservative therapy with Chuna therapy improved the symptom of H.I.V.D. much effectively, and especially in the patient groups of male, 30-39 years, standing Job, duration of symptom within one week, the 4th step of chuna treatment, the first step of chuna medicine treatment, and the excellent satisfactory assessment of Chuna treatment. Therefore, it is supposed that the conservative therapy with Chuna therapy and patient guidance should be much actively continued.

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300 keV 중성자(中性子)에 대한 방사선량(放射線量) 관계량(關係量)의 산정(算定) (Dosimetric Quantities for 300 keV Neutrons)

  • 이수용
    • Journal of Radiation Protection and Research
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    • 제11권1호
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    • pp.37-43
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    • 1986
  • ICRU 구(球)를 피사체(被射體)로 하여 300 keV 중성자(中性子)의 방사선량(放射線量) 관계량(關係量)을 평가(評價)하였다. 피사체내(被射體內)의 선량당량(線量當量) 분포(分布)를 직접(直接) 산정(算定)하기 위해 중성자(中性子)-광자(光子)-하전입자(荷電粒子) 결합수송(結合輸送)을 다룰 수 있는 몬테칼로 코드 NEDEP을 사용하였다. 계산결과(計算結果) 얻은 방사선량(放射線量) 관계량(關係量)은 다음과 같다. 심부선량당량지수(深部線量當量指數) $H_{I,d}:1.78{\times}10^{11}\;Sv-cm^2$ 표층선량당량지수(表層線量當量指數) $H_{I,s}:2.08{\times}10^{-1}\;Sv-cm^2$ 주위선량당량(周圍線量當量) $H^*(0.07):1.70{\times}10^{-11}\;Sv-cm^2$ 주위선량당량(周圍線量當量) $H^*(10):1.78{\times}10^{-11}\;Sv-cm^2$ 실효선질계수(實效線質係數) $\bar{Q}^*(10):12.4$

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국산 쥐오줌풀속 식물의 성분 연구(I) -Valeriana fauriei $B_{RIQUET}$ 변품종의 정유 성분 검색- (Studies on the Constitutents of Korean Valerians(I) -Screening Tests on the Volatile Oils from Korean Valeriana fauriei Species-)

  • 김창민;류경수
    • 생약학회지
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    • 제7권4호
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    • pp.237-240
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    • 1976
  • To investigate the constituents of following plants, Valeriana fauriei species, which are V. fauriei var. fauriei $H_{ARA}$, V. fauriei form. coreana $H_{ARA}$ and V. fauriei var. dasycarpa $H_{ARA}$, we carried out gas-liquid chromatographical analysis of the volatile oils of these plants and found that camphene, l-bornylacetate, ${\alpha}-pinene,\;{\beta}-pinene$, d,l-limonene, l-borneol and ${\alpha}-kessylacetate$ were common components in their volatile oils. However, their terpenoidal composition was considerably different from ${\alpha}-kessylacetate$ in V. faurie var. fauriei, from kessanol, ledol, kessoglycol and nardol in V. fauriei var. dasycarpa, and from kessoglycoldiacetate, ${\alpha}-kessylalcohol$, faurinone and terpineol in V. faurie form. coreana. It was found by gas-liquid chromatography that the terpenoidal patterns of these Korean valerians were similar to those of Japanish valerians.

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