• Proceedings of the KIEE Conference
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• 2005.07a
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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.

• Proceedings of the KIEE Conference
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• 2005.11b
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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.

• Journal of Acupuncture Research
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• v.20 no.5
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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.

• Proceedings of the IEEK Conference
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• 2002.06b
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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.

• Proceedings of the Korean Vacuum Society Conference
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• 2002.06a
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• pp.177-177
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• 2002

• Journal of the Korean Mathematical Society
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• v.45 no.6
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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 $x\;{\in}\;V(G)$.

• Korean Journal of Poultry Science
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• v.21 no.3
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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.

• The Journal of Korea CHUNA Manual Medicine
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• v.2 no.1
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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.

• Journal of Radiation Protection and Research
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• v.11 no.1
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• pp.37-43
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• 1986

Dosimetric quantities for 300 keV neutrons in the ICRU standard tissue sphere were evaluated. The Monte Carlo code NEDEP which performs neutron-photon-charged particles coupled transport was used in the direct estimation of absorbed dose and dose equivalent. Some important quantities calculated are as follows; Deep dose equivalent index $H_{I,d}:1.78{\times}10^{11}\;Sv-cm^2$ Shallow dose equivalent index $H_{I,s}:2.08{\times}10^{-11}\;Sv-cm^2$ Ambient dose equivalent $H^*(0.07):1.7{\times}10^{-11}\;Sv-cm^2$ Ambient dose equivalent $H^*(10):1.78{\times}10^{-11}\;Sv-cm^2$ Effective quality factor $\bar{Q}^*(10):12.4$

• Korean Journal of Pharmacognosy
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• v.7 no.4
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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.