http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
폴리머 매트릭스를 전구체로 사용한 SrAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>,Dy<sup>3+</sup> 축광성 형광체의 합성 및 형광 특성
김수종,권혁실,Kim, Soo-Jong,Kwon, Hyuk-Sil 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.8
[ $SrAl_2O_4:Eu^{2+},\;Dy^{3+}$ ] phosphor was synthesized using the impregnation method, and its photoluminescence and long-afterglow properties were investigated, A mixture of $Sr(NO_3)_2,\;Al(NO_3)_2\;9H_2O,\;EuCl_3\;6H_2O,\;DyCl_3\;6H_2O,\;NdCl_3\;6H_2O$ salts were dissolved in distilled water and impregnating into the polymer precursor. After drying, the impregnated mixture was heat treated at $900-1400^{\circ}C$ for 2h in a $N_2-H_2$ reduction atmosphere. The microstructure and crystal structure of the $SrAl_2O_4:Eu^{2+},\;Dy^{3+}$ powders were examined by scanning electron microscopy and X-ray diffraction, respectively. The photoluminescence spectra showed an excitation band along over wide wavelength of 250-450nm, and a broaden emission with a maxima peak at 360nm. In addition, the spectra also showed a good long after glow that decayed over a 1000sec period after 10 min excitation illumination.
질산코발트6수화물을 전구체로 사용한 침전법에 의한 산화코발트 나노입자의 합성
김수종 ( Soo-jong Kim ) 조선대학교 공학기술연구원 2021 공학기술논문지 Vol.14 No.1
Co(NO<sub>3</sub>)<sub>2</sub> 6H<sub>2</sub>O aqueous solution and sodium hydroxide were used to synthesize cobalt oxide (Co<sub>3</sub>O<sub>4</sub>) particles by precipitation method. The precipitated precursor was calcined at a temperature of 400 to 900°C to obtain cobalt oxide particles having a particle size of 100 to 500 nm. The crystallization process and morphology according to the calcination temperature were examined. The properties of the synthesized powder were evaluated using SEM, EDS and XRD. As a result of XRD diffraction and EDS analysis of the prepared powder, it was confirmed that Co<sub>3</sub>O<sub>4</sub> is synthesized. As a result of heat treatment of the powder to 800℃, it was confirmed that crystal growth of cobalt oxide continues to occur.
論文(논문) : 하이브리드 로켓 모터에 대한 연소 실험 측정 불확도
김수종 ( Soo Jong Kim ),문희장 ( Hee Jang Moon ),김진곤 ( Jin Kon Kim ) 한국항공운항학회 2011 한국항공운항학회지 Vol.19 No.1
In this study, the measurement uncertainty of combustion experimental system and experimental parameters for hybrid rocket were evaluated by B type evaluation method. The measurement uncertainty of all experimental parameters was lower than 3%. The highest value of expanded uncertainty was characteristic velocity efficiency with 2.83% and the expanded uncertainty of regression rate which is the design and performance parameter was indicated to 0.03%. These results shown that the reliability of hybrid combustion system was located within allowed limits.
압축력 흡수재를 이용한 외부 포스트텐션 보강공법(Bow공법) 시공사례
김영성(Kim Young-Sung),노수종(Roh Soo-Jong),임재형(Lim Jae-Hyung),문정호(Moon Jong-Ho) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.9 No.2
A strengthening technique for reinforced concrete beams using external unbonded reinforcement offers advantages in speed and simplicity of installation over other, established, strengthening techniques. The purpose of this paper is to analysis on a construction case about a structure strengthened by Bow system, namely external prestressing, for flexural strengthening of beams. The paper provides a general construction example description of a structure strengthened using the technique. It is shown that the technique can provide greater construction process enhancement to a general strengthening technique.
압축력 흡수재를 이용한 외부 포스트텐션 보강공법(Bow공법) 시공사례
김영성 ( Kim Young-sung ),노수종 ( Roh Soo-jong ),임재형 ( Lim Jae-hyung ),문정호 ( Moon Jong-ho ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.2
A strengthening technique for reinforced concrete beams using external unbonded reinforcement offers advantages in speed and simplicity of installation over other, established, strengthening techniques. The purpose of this paper is to analysis on a construction case about a structure strengthened by Bow system, namely external prestressing, for flexural strengthening of beams. The paper provides a general construction example description of a structure strengthened using the technique. It is shown that the technique can provide greater construction process enhancement to a general strengthening technique.
김수종(Su Jong Kim),김영철(Young Chol Kim),이태수(Tae Soo Lee) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
본 논문은 의사표현이 어려운 전신마비환자의 뇌파(EEG)를 이용하여 긍정과 부정을 표현할 수 있는 방법에 대해서 소개한다. 더 나아가 인간의 감정에 따라 긍정과 부정을 민감하게 반응하는 뇌 영역을 분석하였다. 해당영역의 뇌파(EEG)변화를 측정하기 위해 컴퓨터 시스템과 접목시키는 목적도 포항하고 있다. 이를 위해서 미약한 뇌파를 증폭 시키는 전치 증폭기를 구현하였고 인공산물과 뇌파 주파수영역만을 통과시키는 아날로그 전자회로를 구현하였다. 또한 인간의 두뇌피질로부터 측정된 신호는 컴퓨터 시스템에 전송된다. 수신된 신호를 실시간 Fast Fourier Transform(FFT) 신호처리과정을 거쳐 뇌파의 주파수 영역을 분류하게 된다. 이때 분류된 뇌파를 바탕으로 인간의 긍정과 부정을 표현할 수 있는 방법을 제시한다.
김수종,한정화,심재호,Kim, Soo-Jong,Han, Cheong-Hwa,Shim, Jae-Ho 한국세라믹학회 2013 한국세라믹학회지 Vol.50 No.6
Nano-sized titanium oxide powders were synthesized by a polymer matrix technique using pulp and Titanium tetraisopropoxide (TTIP) as starting materials. The synthesized powders were characterized by XRD and FE-SEM. The particle size of the powders was controlled by preparation conditions, such as heat treatment temperature and time. After investigating various drying and heat treatment conditions, 50-100 nm sized homogeneous titanium oxide particles were obtained by treating at $600^{\circ}C$ for 1 h. The crystallization and rapid growth of particles was accelerated by increasing heat treatment temperature and time. Anatase phase generated below $600^{\circ}C$ transformed to the rutile phase with increasing heat treatment temperature. Moreover, above $800^{\circ}C$, heat treatment time had a very large influence on particle growth, and changing the heating condition also had a large influence on crystal growth.