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차세대 고속·지능형 가공시스템의 연구개발 착수 : 산업자원부, 지난해 말부터 韓國機械硏究院을 통한 본격 추진
박종권 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.1
산업자원부는 우리나라 공작기계산업의 선진화와 일류화를 위해 중장기적인 기술개발 프로그램을 본격 가동하여 지난해 말부터 향후 5년간 1,2단계로 나누어 약 280억원(정부:160억원 민간:120억원)을 집중 투자 개발하기로 하였다. 본 연구는 한국기계연구원(원장 황해용)의 총괄사업책임자인 박종권 박사 연구팀을 통해 산ㆍ학ㆍ연의 협동체제를 구축하여 개발되는 것으로서 21세기 기술선진국 진입을 위해 고부가가치로 국제경쟁력이 높으면서 전 산업으로의 기술적, 경제적 파급효과가 크고 5년 내외에 실용화 및 상품화가 가능하여 시장성과 직결될 수 있는 과제를 세부개발 목표로 하여 추진하게 된다.
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Characteristics of cationic surfactants having different chain lengths
박종권,정노희 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
Different types of cationic surfactant was synthesized and confirmed by FT-IR and <sup>1</sup>H-NMR spectroscopy. Surface tensions were measured by surface tensiometer Sigma 70. Their c.m.c. values evaluated by surface tension method was 6.1×10<sup>-4</sup>~9.1×10<sup>-3</sup> mol/L. The Krafft point of the these surfactants were 23.2~42.3°C. The emulsifying properties of synthesized cationic surfactants and sodium dodecyl sulfate (SDS), tetradecyl trimethyl ammonium bromide (TTAB) was investigated.
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공작기계 이송계의 Stick-Slip 특성에 관한 연구
박종권,이후상,Park, Jong-Gwon,Lee, Hu-Sang 한국기계연구원 1988 기계연구원소보 Vol.18 No.-
When low sliding velocities in the boundary lubrication range are operating, irregular movements frequently occur which are a result of the stick-slip phenomenon. Such slide motions are undesirable in precision machine tools, particularly with feed back systems used in numerical and adaptive control machine tools. Accordingly, this paper reports analytical and experimental studies in the stick-slip characteristic of machine tool feeding system. The main conclusions of this study are as follows; The tendency towards stick-slip effects may be reduced by; 1). Reducing the drop in friction coefficient in the Stribeck curve(on the rising part of the friction characteristic at higher sliding speeds, the system is stable all the time) 2). Reducing the transition velocity by the use of a higher viscosity lubricating oil. 3). Increasing the stiffness(Damping)and reducing normal load(Sliding mass) Therefore, the Critical velocity is decided from the above conclusions and in designing of machine tool, feed rates(sliding velocity)must be design the more than critical velocity.
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12인치 Wafer Final Polishing 장비 개발
박종권,우에다,이상열,신현성 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-
In this paper, we reported a final polishing machine for 300 mm bare wafer. The final polishing system of bare 300 mm wafer is developed for replacing multistage polishing and grinding process with high quality of flatness required in 0.13 ㎛ design rule. The machine had three polishing tables and eight rotating heads that carries wafers attached on a indexing column so that three steps of the process were possible. The machine structure and components were designed and developed with support of numerical analysis for static and dynamic characteristics. The prototype built with utilities were tested, and the results of surface quality and flatness were discussed.
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朴鍾權 동국대학교 대학원 1991 大學院硏究論集-東國大學校 大學院 Vol.21 No.-
The right of life is the one that should be protected by the private law. Thus this must be a justifiable interpretation on the existing law. The interpretation of law is to affirm the existence of right which is unmistakably the right of life that should generate some indemnity claims in case the infringement of right of life constitute some factors of illegal activity. The actor's negligent conduct is a legal cause of harm to another if his conduct is a substantial factor in bringing about the manner in which his negligence has resulted in the harm. The word "substantial" is used to denote the fact that the defendant's conduct has such an effect in producing the harm as to lead reasonable men to regard it as a cause, using that word in the popular sense, in which there always lurks the idea of responsibility, rather than in the so called "philosophic sense". which includes every one of the great number of events without which any happening would not have occurred. Damages for harm are to be apportioned among two or cause where there are distinct harms, or there is a reasonable basis for determining the contribution of each cause to a single harm. There are also cases where apportionment may be made between the plaintiff and the defendant when the plaintiff himself is ar fault. The apportionment is also possible in cases of the last clear chance, as where the plaintiff is struck and injured because of his won negligence, and after he is helpless the injury is aggravated, as for example by the defendant's negligent failure to remove his vehicle from the plaintiff's body. Contributory negligence is conduct on the part of the plaintiff which falls below the standard to which he should conform for his own protection, and which is a legally contributing cause co-operating with the negligence of the defendant in bringing about the plaintiff's harm. Contributory negligence is conduct which involves an undue risk of harm to the person who sustains it.
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제4형 엘러스-단로스 증후군에 속발된 혈관 합병증의 치료
박종권 대한혈관외과학회 2011 Vascular Specialist International Vol.27 No.2
Ehlers-Danlos syndrome type IV (EDS IV), the vascular type of EDS, is an inherited connective tissue disorder due to abnormal procollagen III synthesis by mutation of the COL3A1 gene. EDS is classified into 6 types based on clinical, biochemical, and molecular characteristics. Among them, EDS IV has the worst prognosis because of the major vascular catastrophes and the difficulty of vascular repair due to fragile connective tissue. Arterial, digestive, or uterine ruptures are the main lethal symptoms of EDS IV, and thin translucent skin, extensive bruising, and characteristic facial appearance are the other major symptoms. Although many successful results have been reported after open surgery or endovascular repair for EDS IV,surgical or endovascular procedures are still challenging to perform and sometimes are associated with serious hemorrhagic complications in EDS IV patients. In general, open surgery is not recommended except in an emergency situation, and conservative treatment is the preferred strategy for the treatment of vascular complications in EDS IV. Aneurismal diseases are observed in many EDS IV patients, and abdominal aortic aneurysm and iliac arterial aneurysm are the frequent presentations. Therefore, when treating patients with aneurysms, the vascular surgeon should consider the high possibility of connective tissue disease, especially EDS IV. Without the preoperative recognition of EDS IV, routine surgical or endovascular procedures may result in major bleeding and subsequent increased morbidity and mortality. In this article, the characteristics,clinical outcomes, and treatment strategies of EDS IV are reviewed.
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