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구리(II)의 2-피리딘카르복살데히드 티오카르보히드라존 착물의 합성과 분석적 응용
김차식,김창수,Kim, Cha-Shik,Kim, Chang-Su 한국분석과학회 1998 분석과학 Vol.11 No.5
$Cu^{2+}$을 2-피리딘카르복살데히드(PyTC)와 반응시켜 $[Cu(PyTC)H_2O)]SO_4$를 얻었다. 이화합물은 1:1 전해질이며 물과 극성 유기 용매에 아주 잘 녹았다. 이 착물의 원소분석, 전기전도도 및 분광학적 데이터에서 이화합물의 구조는 사각평면임을 제시하였다. PyTC를 이용한 Cu(II)의 정량 가능성에 대하여 연구하였다. 구리(II)의 PyTC용액은 pH 4에서 $2.9{\times}10^{-4}M$까지 Beer의 법칙에 따랐다. 2-Pyridinecarboxaldehyde thiocarbohydrazone(PyTC) have been reacted with $Cu^{2+}$ to form $[Cu(PyTC)H_2O)]SO_4$. This complex is soluble in water and polar organic solvents. The complex has been characterized by elemental analysis, conductivity, effective magnetic moment, and spectroscopic data. From the results the complex is square planar. The colorimetric determination of Cu(II) ion by using PyTC as a ligand was studied. The solution of copper(II) with PyTC was obeyed Beer's law in concentration up to $2.9{\times}10^{-4}M$ at pH 4.
김차식 대구광역시교육위원회 2009 大邱敎育 Vol.- No.49
수석교사제의 출발은 아직 미미하지만 잘만 발전시키면 학교단위에서 실질적인 변화와 개혁을 불러일으킬 수 있는 매우 소중한 불씨가 될 수 있을 것으로 확신한다.
2-Pyridinecarboxaldehyde thiocarbohydrazone의 코발트(II), 니켈(II) 및 구리(II)착물의 합성과 성질
金且植,金昌洙 大邱大學校附設 基礎科學硏究所 1997 基礎科學硏究 Vol.14 No.1
Schiff base. 2-pyridinecarboxaldehyde thiocarbohydrazone(PyTC) has been prepared from the reaction of 2-pyridinecarboxaldehyde(PyCHO) with thiocarbohyrazide. The Schiff base has been reacted with CoCl·6H₂O, NiCl₂· 2H₂0 and CuSO₄.5H₂O to form Co(II), Ni(ll), and Cu(II) complexes of PyTC. These complexes have been characterized by elemental analysis, conductivities, and spectroscopic methods.
고압 솔레노이드 밸브 블록 플라스틱 사출 성형에 관한 연구
김차식(Chasik Kim),조태영(Taeyoung Cho) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The Electronically Controlled Air Suspension, unlike current air suspension consists of the Compressor, which supplies air to suspension, the Solenoid Valve that regulates the air circulation, the Reservoir Tank, containing air, Electronic control unit, Sensors and Damping control parts. This system adapted the Solenoid Valve Block. Since this valve block made by plastic injection molding. To optimize the plastic injection molding, we used CAE software to analysis it's characteristics. The CAE software have been used in development process by automotive parts suppliers for improving the quality and performance of automotive parts in various filed such as structure, crash, safety ane etc. Recently, the automotive industry has become more competitive. By employing CAE analysis, it can reduce the development cost and time for the survival strategy. Due to this fact, growing number of companies in automotive industry using CAE analysis. This report shows how to optimized part design and connect systematically for through out the processes from part and mold design to manufacturing for the efficient usage of injection molding analysis in development process.
전자제어식 공기현가장치 고압 솔레노이드 밸브 블록 개발
김차식(Chasik Kim),박건영(Gunyoung Park),조태영(Taeyoung Cho),김교림(Kyolim Kim),김장보(Jangbo Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The Electronically Controlled Air Suspension, unlike current air suspension consists of the Compressor, which supplies air to suspension, the Solenoid Valve that regulates the air circulation, the Reservoir Tank, containing air, Electronic control unit, Sensors and Damping control parts. This system adapted the Solenoid Valve Block which has superb performance and reliability in high pressure and prompt response time. Also, to satisfy complicated air system regulations and performance, the optimal Solenoid Valve Block was developed based on, in design stage, the Limited Element Numeric Solution was performed and was proved from the thorough test.