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리튬이온 배터리용 다층박판 금속의 초음파 용착시 용착강도
김진범(Jin-Bom Kim),서지원(Ji-Won Seo),박동삼(Dong-Sam Park) 한국기계가공학회 2021 한국기계가공학회지 Vol.20 No.6
As a significant technology in the smartization era promoted by the Fourth Industrial Revolution, the secondary battery industry has recently attracted significant attention. The demand for lithium-ion batteries (LIBs), which exhibit excellent performance, is considerably increasing in different industrial fields. During the manufacturing process of LIBs, it is necessary to join the cathode and anode sheets with thicknesses of several tens of micrometers to lead taps of the cathode and anode with thicknesses of several hundreds of micrometers. Ultrasonic welding exhibits excellent bonding when bonded with very thin plates, such as negative and positive electrodes of LIBs, and dissimilar and highly conductive materials. In addition, ultrasonic welding has a small heat-affected zone. In LIBs, Cu is mainly used as the negative electrode sheet, whereas Cu or Ni is used as the negative electrode tab. In this study, one or two electrode sheets (t0.025 ㎜ Cu) were welded to one lead tab (t0.1 ㎜ Cu). The welding energy and pressure were used as welding parameters to determine the welding strength of the interface between two or three welded materials. Finally, the effects of these welding parameters on the welding strength were investigated.
김진범(Jin-Bom Kim),정승화(Seung-Hwa Jeong),양정강(Joung-Kang Yang) 대한치과보험학회 2010 대한치과보험학회지 Vol.1 No.1
Objectives: The purpose of this study was to obtain the data for the strengthening of dentists" competency on the management of the National Health Insurance Program in Korea. Methods: Questionnaires designed by authors were distributed to eleven dental colleges or graduate schools of dentistry in December of 2007 year. Results: Exclusive educational subjects related to National Health Insurance are offered at seven among nine universities. Eight among nine universities open educational subjects related to National Health Insurance at grade 3 or 4. Five among nine universities educate educational subjects related to National Health Insurance for 6-8 hours and over. Universities opening exclusive educational subjects related to National Health Insurance or educating subjects related to National Health Insurance four 6-8 hours and over were estimated to educate the practical training related to the reimbursement claims for the patients of National Health Insurance considerably. Nine among ten universities responded educational time related to National Health Insurance was insufficient. Conclusions: To enhance the operational competencies managing the National Health Insurance, there is a need to establish the exclusive educational subject related to National Health Insurance and to strengthen the educational time related to National Health Insurance.
진주시 수돗물 불소농도조정사업의 11년간 비용편익 분석
김만경 ( Man Kyong Kim ),정지인 ( Ji In Jung ),김민지 ( Min Ji Kim ),전은주 ( Eun Joo Jun ),김한나 ( Han Na Kim ),김세연 ( Se Yeon Kim ),한동헌 ( Dong Hun Han ),정승화 ( Seung Hwa Jeong ),김진범 ( Jin Bom Kim ) 대한예방치과·구강보건학회 2014 大韓口腔保健學會誌 Vol.38 No.2
Objectives: The aim of this study was to estimate the economic costs and benefits of a water fluoridation program in the city of Jinju, Korea. Methods: In 2009, dental surveys were conducted on 2,315 children aged 6-12 years in Jinju, which had been fluoridated for 11 years. The decayed/missing/filled teeth (DMFT) scores of children in Jinju were compared to the DMFT scores of same-aged children in non-fluoridated small- and mediumsized cities in the fourth Korean National Health and Nutrition Examination Survey conducted from 2007 to 2009 by the Korea Centers for Disease Control and Prevention. The reduced number of decayed permanent teeth by the water fluoridation program was estimated as the difference between the DMFT scores of children in Jinju and those in non-fluoridated small- and medium-sized cities. The economic benefits were estimated by the savings from reduced dental treatment costs by using the reduced number of decayed permanent teeth from the water fluoridation program. All annual costs and benefits were calculated from 1998 to 2009. The social rate and untreated rate of decayed teeth were applied as 3% and 20%, respectively. The annual benefit-cost ratio was estimated by using the annual benefits and cumulative program costs. Results: The economic benefit in 2009 from a water fluoridation program was estimated as 57,496,000,000 Korean Won (KRW), and the cumulative cost in 2009 was estimated as 1,387,000,000 KRW. The net present value in 2009 from a water fluoridation program was 56,109,000,000 KRW. The benefit-cost ratio in 2009 was estimated as 41.4. Conclusions: The economic benefit of a water fluoridation program in Jinju city was evaluated as excellent.
울산광역시 장애인 구강건강증진을 위한 자원봉사 중심의 지속적 치과진료사업의 사례
김진범(Jin-Bom Kim),김병재(Byung-Jae Kim),한동헌(Dong-Hun Han),전은주(Eun-Joo Jun),김한나(Han-Na Kim),김민지(Min-Ji Kim) 대한치과의사협회 2015 대한치과의사협회지 Vol.53 No.11
The purpose of this study was to evaluate the oral health promotion of the disabled persons by voluntary dental services in Ulsan Metropolitan City. Two dentists taken a calibration training for national oral health survey examined the oral health status of 473 disabled persons from two special schools for the disabled children and adolescents, a residential facility and a gymnasium for the disabled persons in 2009-2010. The surveyed disabled persons in the age range was from 7 to 74 years old. Voluntary dentists, oral hygienists and other civilian volunteers had supplied with the oral health care services to the disabled persons at dental clinics of special schools for the disabled children and adolescents, and a dental clinic supported from Nam-Gu Public Health Center in Ulsan Metropolitan City since 1997. The obtained data from these surveys were analyzed with the SPSS statistical package. Among subjects aged 12-14 years, subjects with decayed, missing and filled teeth (DMFT) in permanent dentition was 46.9%; subjects with untreated decayed teeth, 17.2%. The number of decayed, missing and filled teeth in permanent dentition was 1.36. The proportion of decayed components of DMFT score was 28.00%; proportion of missing components of DMFT score, 1.43%; proportion of filled components of DMFT score, 70.57%. The proportion of filled components of DMFT score among disabled persons of all age group in Ulsan were evaluated to be a similar level to non-disabled citizens in Ulsan from 2010 Korean National Survey. The oral health care programs for disabled persons by voluntary services of dental professionals and other civilians are evaluated to be effective for the oral health promotion of disabled persons in Ulsan.
성인의 부정구강진료 경험 관련 요인: 국민건강영양조사제4기(2007-2009년) 자료를 중심으로
김지은 ( Ji Eun Kim ),정지인 ( Ji In Jung ),김한나 ( Han Na Kim ),김세연 ( Se Yeon Kim ),전은주 ( Eun Joo Jun ),김민지 ( Min Ji Kim ),정승화 ( Seung Hwa Joeng ),김진범 ( Jin Bom Kim ) 대한예방치과·구강보건학회 2014 大韓口腔保健學會誌 Vol.38 No.4
Objectives: The aim of the study was to analyze the factors related to the illegal dental treatment experience(IDTX) among Korean adults. Methods: The raw data for the analysis of IDTX among Korean adults were obtained from the datasetof the Fourth Korea National Health and Nutrition Examination Survey conducted in 2007-2009. Stratifiedweighted subjects aged ≥45 years were selected according to region by using clustered samplingmethods. In total, the data of 9,254 subjects, who participated in the interview and dental examinationsrelated to the experience of illegal dental treatments, were analyzed using chi-square test, general linearmodel, and logistic regression analysis with complex sampling design by considering demographicand socioeconomic variables (age, gender, region, educational level, household income, and medicaland dental delivery system) as well as oral status variables (prosthesis and number of natural remainingteeth). Results: IDTX rate was <10% among adults aged 35-44 years or below. However, it increased to 15%among adults aged 45-54 years and was >30% among adults aged ≥65 years. The age group with ahigh IDTX rate coincided with the age group with a high number of lost teeth. Most of the IDTX caseswere presumed to be prosthetic treatments. The model comprising demographic, socioeconomic, andoral status variables had the highest explanation power. Significant variables were educational level,household income, prosthesis status, and number of remaining teeth. Women and persons under themedicaid system were more likely to undergo illegal dental treatments. Conclusions: Comprehensive prosthetic treatments are suggested to be included in the care servicesof the national health insurance and medicaid system to reduce the number of illegal dental treatments.