• 제목/요약/키워드: 진사(進士)

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사슴사료에서의 알팔파 효과

  • 권찬호
    • 월간한국양록
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    • 21호
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    • pp.19-25
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    • 1995
  • 우리나라의 사슴에 공급되는 조사료는 대부분 중국산 갈잎건초, 옥수수 사일리지 및 일부 자가 생산된 조사료이다. 우리나라에서 녹용생산을 위해 사육되고 있는 사슴은 6개의 사슴아과중 진사슴아과(Cervinae)에 속하는 꽃사슴, 붉은사슴, 엘크, 다마 사슴들로 이들은 거친사료에 가장 잘 적응되어 있는 종류들이다. 특히 사슴은 타 동물과는 달리 난틴성분을 분해할 수 있는 능력이 있으므로 갈잎이나 어린새싹등을 소화하는데 잘 길들여져 있다. 그러나 우리나라에서 수입하고 있는 갈잎은 품질이 균일하지 못한 경우가 있고 사슴의 사육기간에 따라 고단백사료를 필요로 하므로 대체 사료의 개발이라는 측면에서 가격만 적당하다면 다양한 무기물과 미지성장인자가 많이 함유된 것으로 알려진 알팔파도 좋은 사료자원이 될 수 있을 것이다. 그러나 이러한 알팔파를 사슴사료로 이용하기 위해서는 섬유소와 에너지 단백질의 적정요구량을 결정하고 여러가지 가공알팔파를 적절히 이용하는 방법을 찾아내는 것이 필요하다. 따라서 여기에서는 1992년부터 1993년까지 카나다의 알버타 대학에서 실시한 사슴사료로써 알팔파의 효과와 각종 가공 알팔파의 올바른 이용방법에 대해 연구한 것을 발표하고자 한다.

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고주파 성형 재료용 폴리에칠렌의 절연 신뢰도 분석 (An Analysis of Insulating Reliability in Polyethylene for High Frequency Molding Materials)

  • 박건호;김기준;왕종배;신철기;김진사;이준웅
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2000년도 제2회 학술대회 논문집 일렉트렛트 및 응용기술전문연구회
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    • pp.64-67
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    • 2000
  • In this study, the DC dielectric breakdown of polyethylene used for clothing material of cable was experimented and then its data were simulated by Weibull distribution probability. The dielectric breakdown characteristics in polyethylene were examined and various effects of the DC dielectric breakdown on polyethylene were also discussed.

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Cu-Al 전도체에서의 홀손실과 자기저항에 관한 연구 (A Study on the Hall losses and Magnetoresistance in Cu-Al Composite Conductor)

  • 김상걸;정일형;김진사;이준웅
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1997년도 추계학술대회 논문집 학회본부
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    • pp.408-410
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    • 1997
  • An anomalous magnetoresistance effect has been observed at very low temperatures for composite normal metal conductors. This anomalous behavior is due to transverse Hall currents in the composite which would result in increased $I^2R$ losses and a higher effective resistance for the composite conductor. In this paper, transverse current flow and effective resistance of Cu-Al double-strip was analyzed using finite element method for predicting the Hall losses to be resulted in anomalous magnetoresistance effect, and then be able to visualized.

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전기적 스트레스에 따른 에폭시 복합체의 열자격전류 특성 (The Properties of Thermally Stimulated Currents according to Electrical Stress in Epoxy Composites)

  • 오현석;김진사;박건호;이준웅
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1995년도 추계학술대회 논문집 학회본부
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    • pp.401-403
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    • 1995
  • The degradation phenomena according to electrical stress in epoxy composites were studied. The formation of electrets were observed by appling high voltages, 22.9[kW/cm], during 5[hr] to five kinds of specimens for a given mixing rate, and then TSC(thermally stimulated current) values were measured at the temperature range of $-160\sim200[^{\circ}C]$.

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LED 조명기구의 EMI 디버깅 기술 (EMI Debugging Technique of LED Lighting Module)

  • 김진사
    • 한국전기전자재료학회논문지
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    • 제33권2호
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    • pp.151-154
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    • 2020
  • Radiation noise due to EMI noise generated by the driving circuits of LED lighting devices in a medical imaging room was reduced by decreasing the noise source in the driving circuits and changing the number of corrections in EMI filters. Noise attenuation and filter changes enabled driving circuits that reduced the electromagnetic waves. Such circuits were efficiently designed by using capacitors and inverters in a given space. Therefore, the malfunction of radiation devices can be minimized by using EMI-reduction filter circuits, and reliable operation of medical devices can be expected by blocking electromagnetic waves.

열처리조건에 따른 MIM 박막의 Capacitance-Voltage 특성 (C-V Characteristics of MIM Thin Film with Annealing Conditions)

  • 김진사;최영일;송민종;신철기;최운식
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2015년도 제46회 하계학술대회
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    • pp.1140-1140
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    • 2015
  • In this paper, the MIM thin films were deposited on Si substrate by sputtering method. And MIM thin films were annealed at $400{\sim}600^{\circ}C$ using RTA. The capacitance density of MIM thin films were increased with the increase of annealing temperature. The maximum capacitance density of $0.62{\mu}F/cm^2$ was obtained by annealing temperature at $600^{\circ}C$. The voltage dependence of dielectric loss showed about 0.03 in voltage ranges of -10~+10 V.

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(Sr.Ca)TiO$_3$ 세라믹의 정전용량-전압특성에 관한 연구 (A Study on the Capacitance-Voltage Properties of the (Sr.Ca)TiO$_3$ Ceramic)

  • 김진사;최운식;신철기;정일형;김용주;이준웅
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1996년도 춘계학술대회 논문집
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    • pp.299-303
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    • 1996
  • In this Study, the capacitance-voltage properties of the (Sr$\_$1-x/$.$Ca$\_$x/)$\_$m/TiO$_3$(0.05$\leq$x$\leq$0.2, m=0.996, 1, 1.004) ceramics were investigated. The results of the capacitance-voltage measurements indicated that the grain boundary was composed of the continuous insulating layers. The capacitance is almost unchanged below about 20[V] but it decreases slowly about 20[V]. The thick of the effective depleation layer was calculated by using the average grain size, it was in the range of 760∼3400[${\AA}$].

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Si 기판을 이용한 GaN 박막의 구조적 특성 연구 (A Study of Structure Properties of GaN films on Si(111) by MOCVD)

  • 김덕규;김경민;김진사;박춘배
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2005년도 추계학술대회 논문집 Vol.18
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    • pp.59-60
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    • 2005
  • The characteristics of GaN epitaxial layers grown on silicon (111) substrates by metalorganic vapor phase epitaxy have been investigated. The only control of AIN thickness was found to decrease the stress sufficiently for avoiding crack formation in an overgrown thick ($2.6{\mu}m$) CaN layer. X-ray diffraction measurementsare used to determine the effect of AIN thickness on the strain in the subsequent GaN layers. The 437arcsec linewidth on the (002) x-ray rocking curve also attest the high crystalline quality of GaN on Si (111).

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RF 스퍼터링법에 의한 SCT 박막의 제조 및 특성 (Fabrication and Properties of SCT Thin Film by RF Sputtering Method)

  • 김진사;김충혁
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제52권10호
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    • pp.436-440
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    • 2003
  • The (S $r_{0.85}$C $a_{0.15}$)Ti $O_3$(SCT) thin films were deposited on Pt-coated electrode(Pt/TiN/ $SiO_2$/Si) using RF sputtering method according to the deposition condition. The optimum conditions of RF power and Ar/ $O_2$ ratio were 140[W] and 80/20, respectively. Deposition rate of SCT thin films was about 18.75[$\AA$/min] at the optimum condition. The composition of SCT thin films deposited on Si substrate is close to stoichiometry (1.102 in A/B ratio). The capacitance characteristics had a stable value within $\pm$4[%]. The drastic decrease of dielectric constant and increase of dielectric loss in SCT thin films were observed above 200[kHz]. SCT thin films used in this study showed the phenomena of dielectric relaxation with the increase of frequency.ncy.

SMD Inductor Core의 전기적 특성 (The Characteristics of SMD Inductor Core)

  • 오용철;김진사;이동규;신철기;김기준;이철환
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2005년도 춘계학술대회 논문집
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    • pp.85-88
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    • 2005
  • In this study, it analysis electric field of SMD(Surface Mounted Device) Inductor Core and it get electric field only exist inside of SMD core. Therefore electric fields do not affect any device and equipments. These results are very important to design data acquisition system(several test equipments such as temperature, impedance, and current test), because data acquisition system can place under the SND Inductor core. So, it can be decrease their test error due to electric field.

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