http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
윤복연,문덕환,박명희,황용식,함성애,손병철,김대환,이창희,김휘동,이채언 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5
Objective : This study was conducted to prepare the fundamental data on heavy metal concentration in hair permanents agents and to prevent the health impairment due to heavy metal. Methods and Material : The author determined of 5 heavy metals(Pb, Cr, Mn, Ni, and Cu) concentration hair permanent agents in the market with flameless atomic absorption spectrophotometer. Results : The results were as follows: 1. The geometic mean concentrations of total subjects were 0.04㎍/g for Pb, 0.09㎍/g for Cr, 0.06㎍/g for Mn, 0.03㎍/g for Ni, and 0.04㎍/g for Cu. 2. The most highest mean concentrations of heavy metals in hair permanent agents by using type were Cr for wave agent and straight cream agent, Cu for setting iron agent, Cr and Cu for coating perm agent. 3. Metal most hlghest mean concentrations of heavy in hair permanent agents by type of color was green for Cu. 4. The mean concentration of Cu among 5 heavy metals in hair permanent agents by marker was most highest. 5. There was most statistically significant difference on mean concentration in hair permanent agents between domestic and foreign products. 6. The exposure amount of heavy metal concentration by one time using the permanent agent were 4.O㎍ for Pb, 9.O㎍ for Cr, 6.0㎍ for Mn, 3.O㎍ for Ni and 4.0㎍ for Cu. Conclusion : As above results author suggest to prepare the preventive program of health impairment due to heavy metal by long term chronic exposure to who were using the hair permanent agents hair designer and customers.
음향방출법에 의한 탄소섬유강화 플라스틱의 파괴특성에 관한 연구 (2)
윤종희,이장규,박성완,우창기,김봉각,조진호 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-
This study is to investigate a fracture characteristics of carbon fiber reinforced plastics (CFRP) under the tensile loading as a function of acoustic emission (AE) according to the frequency analysis (transient mode) and AE source location (location mode). It was found that the fracture mechanism of AE frequency analysis was a useful tool for the estimation of different type of fracture in CFRP, i.e., matrix(epoxy resin) cracking, delamination and fiber breakage same as AE amplitude distribution.
음향방출법에 의한 탄소섬유강화 플라스틱의 파괴 특성에 관한 연구 (1)
윤종희,박성완,이장규,우창기 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-
The object of this study is to investigate a fracture characteristics of static tensile test as a function of acoustic emission according to the fiber orientation θ=0?in carbon/epoxy composites, CFRP. On tensile loading, it was recognized that the fracture characteristics of CFRP in a unidirectional composites. Using the results of the AE analysis(a=2㎜), it was found that the amplitude distributions of AE signals corresponding the matrix cracking, fiber debonding or delamination, and fiber breaking are 55~70㏈(<200sec), 100㏈(200~600sec), and 80㏈(>600sec).
맞대기 용접 이음재 인장시험에서 발생한 음향방출 신호의 웨이블릿 변환과 응용
이장규,윤종희,우창기,박성완,김봉각,조대희 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-
This study was carried out fusion-welded butt joints in SWS 490A high strength steel subjected to tensile test that load-deflection curve. The windowed or short-time Fourier transform (WFT or SIFT) makes possible for the analysis of non-stationary or transient signals into a joint time-frequency domain and the wavelet transform (WT) is used to decompose the acoustic emission (AE) signal into various discrete series of sequences over different frequency bands. In this paper, for acoustic emission signal analysis to use a continuous wavelet transform, in which the Gabor wavelet base on a Gaussian window function is applied to the time-frequency domain. A wavelet transform is demonstrated and the plots are very powerful in the recognition of the acoustic emission features. As a result, the technique of acoustic emission is ideally suited to study variables which control time and stress dependent fracture or damage process in metallic materials.
음향방출법에 의한 SM 490A 강의 복합용접성 평가(2)
이장규,우창기,김봉각,윤종희,인승현 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-
The object of this study is to investigate the effect of compounded welding by using an acoustic emission (AE) signals and doing a source location for weld heat affected zone (HAZ) through tensile testing. This study was carried out a SM 490A high tension steel for electronic shielded metal arc welding (SMAW), CO₂ gas arc welding and TIG welding. Data displays are based on the measured parameters of the AE signals, along with environmental variables such as time and load. These history plots are displays showing the chronological course of the test. Also, source location gives the X- and Y-coordinates of the AE source.
음향방출 신호를 이용한 SWS 490A 고장력강의 접합성 평가에 대한 실험적 연구
이장규,우창기,윤종희,조진호,조대희,박성완,김봉각,구영덕 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-
The object of this study is to investigate the effect of joinability by using acoustic emission (AE) signals and doing a pattern recognition for weld heat affected zone (HAZ) in tensile testing. This study was carried out an SWS 490A high tension steel for electric shielded metal arc welding (SMAW), CO₂ gas arc welding and TIG welding. And correspondingly, the root openings are 3, 4 and 2.8㎜. The results of the tensile test of weld HAZ come out electric shield arc welding > CO₂ gas arc welding > TIG welding in case of single welding. It is believed that this is a phenomenon where difference of its root opening or base metal thickness. Also, the technique of AE is ideally suited to study variables which control time and stress dependent fracture or damage process in metallic materials.
최선웅,우창기,윤종희 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.6
Impact behavior of polycarbonate in various defect state was investigated using an instrumented impact tester. A method of analyzing raw impact data was developed and successfully demonstrated the impact behavior in terms of load-displacement and energy-displacement curves. This technique was shown to be capable of separating defect, no-defect initiated fractures as well as their propagation behaviors.
SWS 490A 강의 용접 열영향부 음향방출 특성에 대한 연구(1)
이장규,우창기,박성완,윤종희,조진호,김봉각,구영덕 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.4
The object of this study is to investigate the effect of compounded welding through the AE(Acoustic Emission) characteristics for weld HAZ(Heat Affected Zone) under the static tensile test. This study was carried out an SWS 490A, high tension steel for electric shield metal arc welding(SMAW), CO₂gas arc welding and TIG welding. Data displays are based on the measured parameters of the AE signals, along with environmental variables such as time and load. The accumulated AE event curve of HAZ definitely have the point of inflection subject to tensile test. The results of the tensile test of HAZ come out electric shield arc welding > CO₂ gas arc welding >TIG welding in case of single welding, but generally the tensile test of HAZ come out electric shield arc welding > TIG welding > CO₂ gas arc welding. These history plots give us useful and powerful information to analyze the results of material evaluation testing.
암의 종류 및 증상에 따른 삶의 질 평가 척도에 관한 연구 현황 분석
이남헌,조정효,손창규,유화승,이연월,윤담희,이종훈,방선휘,조종관,Lee, Nam-Heon,Cho, Jung-Hyo,Son, Chang-Gue,Yoo, Hwa-Seung,Lee, Yeon-Weol,Yoon, Dam-Hee,Lee, Jong-Hoon,Bang, Sun-Hwi,Cho, Chong-Kwan 대한한방내과학회 2006 大韓韓方內科學會誌 Vol.27 No.3
Objectives : The objective of this study is to analyze what quality of life(QOL) scales are frequently used in cancer patients and lay a cornerstone to develop new QOL scales adequate for oriental medical anti-cancer treatment in the future. Methods : We searched 151 articles concerned with 'QOL and scale and cancer' from PubMed and classified them according to periods. nations. cancer types and symptoms. Results: 138 articles(91%) were published after 1996. 65 articles(43%) were published in USA. For breast. lung, prostate. esophageal cancer and melanoma. European Organization for Research and Treatment of Cancer-quiality of life questionaire(EORTC-QLQ) was used most frequently to evaluate quality of life. Functional Assessment of Cancer Treatment(FACT) for bladder cancer. Hospital Anxiety and Depression Scale(HADS) for colorectal cancer and of Washington Quality of Life questionnaire(UW-QOL) for Head & Neck cancer were used repeatedly. And for the patients with the symptoms such as bone marrow depression. depression. pain. dyspnea. nausea & vomiting and voice change. the investigators used EORTC-QLQ mainly to evaluate QOL. FACT-An(anemia) for anemia. FACT-BMT(bone marrow transplant) for bone marrow depression were applicated generally. Conclusions It is anticipated that further investigations will be performed to develop adequate QOL scales for oriental medical anti-cancer therapy.