압출 성형이 우수한 조사가교 EPDM Pellet 컴파운드 및 이를 이용한 고내열, 고유연 친환경 미래자동차용 전선 개발

박성근,강승훈,이호섭,박철현,박성근 한국고분자학회 2019 한국고분자학회 학술대회 연구논문 초록집 Vol.44 No.2

The risk of gastric cancer according to changes in smoking status among Korean men

박성근,김민호,오창모,Ha Eun-Hee,양은혜,황우연,You Ann Hee,류재홍 한국역학회 2022 Epidemiology and Health Vol.44 No.-

OBJECTIVES: Smoking is a risk factor for gastric cancer. Studies have shown that the risk of gastric cancer can vary by smoking status and smoking amount at a single point in time. However, few data have been reported about the effect of changes in smoking status over time on the risk of gastric cancer. METHODS: This study collected data from the National Health Insurance Corporation in Korea on 97,700 Korean men without gastric cancer who underwent health check-ups from 2002 to 2013. The smoking status (never smoked, quit smoking, and currently smoking) of study participants was assessed in 2003-2004 and 2009, and the results were categorized into 7 groups: never-never, never-quit, never-current, quit-quit, quit-current, current-quit, and current-current. Participants were followed until 2013 to identify incident gastric cancer. A multivariate Cox proportional hazard model was used to calculate adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for incident gastric cancer according to changes in smoking status and smoking amount (pack-years). RESULTS: Compared with group 1 (never-never), participants currently smoking in 2009 (never-current, quit-current, and current-current) had higher HRs for gastric cancer (never-quit: 1.077; 95% CI, 0.887 to 1.306, never-current: 1.347; 95% CI, 0.983 to1.846, quit-quit: 1.086; 95% CI, 0.863 to 1.366, quit-current: 1.538; 95% CI, 1.042 to 2.269, current-quit: 1.339; 95% CI, 1.077 to 1.666, and current-current: 1.589; 95% CI, 1.355 to 1.864, respectively). The risk for gastric cancer was highest in heavy smokers, followed by moderate smokers. CONCLUSIONS: In all categories of smoking status, current smoking was associated with the highest risk of gastric cancer. Heavy smoking was associated with an increased risk of gastric cancer, even in former smokers.

한국의 서비스산업에서 기술혁신이 고용에 미치는 영향

박성근,김병근 한국기술혁신학회 2010 한국기술혁신학회 학술대회 발표논문집 Vol.2010 No.11

고산리유적 석기 검토

박성근 한국신석기학회 2018 한국신석기연구 Vol.- No.36

A Study of Stone Tools in Gosan-ri Site Park, Sungkeun (Curator, Busan Marine Natural History Museum) This article focused on concrete shape and period classification of stoneware found in Gosan-ri site, Jeju. First, synthesized shapes of stoneware and classified major types of stoneware by integrating references of stonewares found in Gosan-ri site. detailed types are arrowhead, point, grinding pestle, stone axe, these were re-sorted based on classification made in previous research. In next chapter, examined aspect of change by period based on classified stonewares. by comparing shape of stoneware found in remain considered as early element of Gosan-ri and other sites in same period in Jeju, attempted to synthesize shape of stonewares of the period. In remain considered as early element of Gosan-ri, found slight tendency rather than distinctive elements. hunting is identified mainly by arrowhead, most of them were worked partly or only both ends. production of the front minutely adjusted with delamination were hardly found. Grinding pestle made of native rocks, are in large size with thick cross section, rahter than small, mobile cooking. Examination with surrounding sites were conducted on the site of Gangjeong-dong, Samhwajigu site. Based on shape of stoneware analyzed by major stonewares, stonewares of Gosan-ri and Gangjeong-dong were identified mostly Gosan-ri style stonware (7,600~6,00calBC), small stone axe(type Ⅱ), type Ⅲ grinding pestle were considered highly likely that the stoneware would continue after the Gosan-ri style stoneware. In the last chapter, briefly pointed out the nature of the hunter-gatherer occupied Gosanri-site and the site itself, based on Gosan-ri site’s stonewares. on the base of shape of stonware in Gosan-ri site, it is hard to recognize all remains reported mainly with pit. and it is highly likely judged that the hunter-gatherer occupied the Gosan-ri site had short-term habitation at least for a season, and after the end of habitation, they moved to another site and lived, carrying mobile stonewares.

이용악 시의 사회 공간적 접근

박성근 국어교육학회(since1969) 2019 국어교육연구 Vol.- No.71

In our history of modern poetry, it is difficult to find a writer who embodied the tragic experiences and emotions of the wandering people as successfully as Lee Yong Ak. Studies on Lee Yong Ak focus on work analysis according to the writer’s background with his experiences of separation from social and cultural contexts and distinctions between realism and modernism from a literary perspective. However, composed ‘space’ is probably what affects literature more essentially. Discursive attempts to newly understand space show that literature can also be newly composed. In modern discourse, space comes into contact with capital, power, composition, differences, and sex. The concept of space, overturned by G. Simmel, M. Löw, A. Giddens, H. Lefèvre, and J. K. Gibson­Graham, allows us to look back at the Lee Yong Ak’s poetry, which is tightly joined with space. In particular, concepts outside discourse such as the composition of space and boundaries of change, strangers, differences, and Chora will aid in breaking up the internal discourses of Lee Yong Ak’s poetry. Above all, when determinacy is broken down and we open ourselves to spaces of uncertainty, we must accept that the production of discourse and practical reasoning are possible. 우리 현대시사에서 유이민(流移民)의 문제가 주는 비극적 체험과 정서를 이용악(李庸岳)만큼 성공적으로 형상화한 작가를 찾기는 쉽지 않을 것이다. 이용악에 관한 연구는 대체적으로 사회․문화적 맥락에서 이산(離散)을 체험한 작가 이력에 따른 작품 분석과 문학사적 맥락에서 리얼리즘과 모더니즘의 양가성에 대한 변별에 초점이 맞추어져 있다. 하지만 문학행위에 보다 근본적으로 영향을 행사하는 것은 현존재의 무의식과 욕망으로 구성된 ‘공간’일 것이다. 공간을 새롭게 이해하려는 담론적 시도들은 문학도 새롭게 구성될 수 있음을 보여준다. 현대 담론에서 공간은 자본, 권력, 구성, 차이, 성(性) 등과 접점을 갖는다. 짐멜, 로브, 기든스, 르페브르, 깁슨­그레엄 등이 전복시킨 공간 개념은 이제 공간에 천착된 이용악의 시를 다시 보게 만들어준다. 특히 공간의 구성과 변화에 관한 경계, 이방인, 차이, 코라와 같은 담론 외부의 개념들이 이용악 시에 관한 내적 담론들을 하나씩 해체하도록 도울 것이다. 무엇보다 확정성을 무너뜨리고 불확정성의 공간에 우리를 열어놓을 때, 담론의 생산과 실천적 사유가 가능하다는 것을 받아들여야 한다.

헬리콥터 무기의 발달현황 및 추세

박성근,Park, Seong-Geun 한국방위산업진흥회 1983 國防과 技術 Vol.- No.60

증착 조건이 KLN 박막의 형상에 미치는 영향

박성근,전병억,김진수,김지현,최병진,남기홍,류기홍,김기완,Park, Seong-Geun,Jeon, Byeong-Eok,Kim, Jin-Su,Kim, Ji-Hyeon,Choe, Byeong-Jin,Nam, Gi-Hong,Ryu, Gi-Hong,Kim, Gi-Wan 한국재료학회 2001 한국재료학회지 Vol.11 No.1

The growth characteristics of 4-fold grain which was appeared in KLN deposition on $Pt/Ti/SiO_2/Si(100)$ substrate was studied by varying process variables. Substrate temperature, sputtering pressure, rf power were selected as process variables, and experiment was carried out near optimum fabrication condition. When using K and Li enriched target, the optimum fabrication conditions were substrate temperature of $600^{\circ}C$, sputtering pressure of 150mTorr, rf power of 100 W and its surface morphology is sensitively varied by small deposition condition changes. KLN is composed of elements which have large difference of boiling point. And it is difficult to fabricate thin film at high temperature and high vacuum deposition condition. Furthermore the phenomenon during deposition process can not be explained by using Thorton's model which explains the relation between thin film structure and melting point of thin film materials. These phenomenon can be explained using boiling point of elements which consist of thin film material. 본 실험에서는 $Pt/Ti/SiO_2/Si(100)$ 기판 위에 KLN 박막을 형성할 때 나타나는 4-fold 그레인의 성장 특성을 조사하기 위하여 공정 변수를 변화시키면서 박막을 제작하였다. 공정 변수는 기판 온도, 스퍼터링 압력, 고주파 전력을 선택하여 최적의 증착 조건 근방에서 공정 변수를 변화시키면서 실험하였다. K와 Li가 과량된 타겟을 사용하여 KLN 박막을 제조할 때 최적의 성장 조건은 고주파 전력 100 W, 공정압력 150 mTorr, 기판온도 $600^{\circ}C$이며 공정변수의 작은 변화에도 박막의 표면 형상은 매우 민감하게 변화하였다. KLN은 화합물을 구성하는 원소 사이의 증기화 온도의 차이가 많이나는 물질로서 고온 고진공의 환경에서 박막을 제조할 때 어려움이 있으며, 녹는점과 기판 온도와의 관계를 설명한 Thornton의 모델로 설명하기 어려운 현상이 나타났다. 이러한 것은 박막 물질을 이루는 구성 원소의 증기화 온도를 이용하여 이 현상을 간단하게 설명할 수 있었다.

비전형적인 소견을 보이는 폐쇄성세기관지염 및 기질화폐렴의 방사선소견 : 1례 보고 A Case Report

박성근,최석진 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4

Bronchiolitis Obliterans with Organizing Pneumonia (BOOP) is a disease characterized pathologically by the presence of granulation tissue plug within the lumina of bronchioles and alveolar ducts and patchy areas of organizing pneumonia, consisting largely of mononuclear cells and foamy macrophages, in the surrounding lung. On CT, BOOP is characterized by the bilateral areas of consolidation involving mainly the subpleural and/or peribronchovascular regions. We describe a case of atypical pattern of BOOP with review the literature.

제조업 생산지수의 당기예측<SUB>Nowcasting</SUB>에 관한 연구

박성근,이성경 산업연구원 2021 연구자료 Vol.- No.-

EM_2를 利用한 側頭下顎障碍患者의 評價

朴成根,金振洙,崔在甲 慶北大學校 齒科大學 1989 慶北齒大論文集 Vol.6 No.1

The author has studied the muscle activities of anterior part of Temporal muscle and masseter muscle, when mandible is resting position, using electromyography in order to obtain the information that is necessary to diagnosis the patient with TM Disorder objectively. The 20 normal subjects and the 27 patients TM Disorder were selected for this study and patients with TMD were distributed to Helkimo's clinical Dysfunction Index and Anamnestic Index. The results were as follows : The mean Voltage of muscle activities of Anterior part of Temporal muscle and masseter muscle in normal subjects, when mandible is resting position, were 1.01±0.26, 0.77±0.34, respectively. Each mean Voltage of muscle activities of Anterior of part of Temporal muscle in patients with TM disorder according to Helkimo clinical dysfunction Index Ⅱ, Ⅲ, when mandibule is resting position, were 1.69±0.84, 2.64±1.12 and each mean Voltage of muscle activities of masseter muscle were 1.60±0.69, 1.96±0.70, respectivly. Each mean Voltage of muscle activities of Anterior part of Temporal muscle in patients with TM Disorer according to Helkimo Anamnestic Index Ⅰ, Ⅱ, when mandibule is resting position were 1.62±0.94, 2.39±1.60 and each mean muscle activities of masseter muscle were 1.59±0.98, 1.86±0.91, respectivly. The muscle activities of Anterior part of Temporal muscle and masseter muscle in patients with TM Disorder were significantly higher than those in normal subjects, (p<0.01). The higher scores of Helkimo Index were, the higher muscle activities of Anterior part of Temporal muscle and masseter muscle in patients with TM Disorder during rest position were, (p<0.01).