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Sangjun Oh,Chulhee Lee,Heekyung Choi,Kyungmo Moon,Keeman Kim,Jiman Kim,Pyeong-Yeol Park IEEE 2008 IEEE transactions on applied superconductivity Vol.18 No.2
<P>We have developed a probe for the critical current measurements of low temperature superconducting strands at various field, temperature and strain. A 30 cm-long strand sample is soldered on a Walters spiral made of beryllium copper alloy and compressive or tensile axial strain can be applied up to 0.7%. Temperature control ability was tested using a MgB<SUB>2</SUB> wire up to 30 K. Three cernox sensors are attached on a spiral adjacent to the strand and the temperature of the spiral is controlled within plusmn50 mK of target temperature during the critical current measurement up to 80 A. Extensive critical current measurements have been carried out for an internal-tin processed Nb<SUB>3</SUB>Sn strand. It was found that the measured field, temperature and strain dependence of the critical current for the internal-tin Nb<SUB>3</SUB>Sn strand is in agreement with the recent scaling law based on strong coupling theory of superconductivity.</P>
청년층의 자본소득 투자와 도박중독 간 영향요인에 관한 연구
강상준 ( Sangjun Kang ),양혜정 ( Hyejeong Yang ),문진영 ( Jinyoung Moon ) 사단법인 아시아문화학술원 2021 인문사회 21 Vol.12 No.6
본 연구는 청년세대 자본소득 투자행위가 도박중독에 영향을 미치는지를 살피고자 하는 목적으로 진행되었다. 청년층 740명을 대상으로 설문조사를 실시하고 위계적 회귀분석을 하였다. 연구결과는 다음과 같다. 첫째, 자본소득 투자행위는 도박중독성을 내포한다. 둘째, 가상화폐가 도박중독 경향성이 더 높다. 셋째, 가계소득이 높을수록 도박중독 경향이 높다. 넷째, 가상화폐, 소득수준의 순서로 도박중독 경향성이 나타난다. 이에 사회 및 국가적 차원의 대응책 마련이 필요하다. 사회와 정부차원에서 가상화폐와 주식투자에 대한 위험성을 경고하고, 신용대출 규제방안 마련, 청년세대를 위한 금융프로그램 마련 정책 등이 필요하다. 향후, 장기적인 추적조사와 해외 사례와 비교조사를 통해 심도있는 연구를 제안한다. Does the young generation’s investment in capital income affect their gambling addiction? This study was conducted with 740 young people. The research results are as follows. First, capital income investment includes gambling addiction. Second, cryptocurrencies have a higher tendency to become addicted to gambling. Third, the higher the household income, the higher the tendency of gambling addiction. Fourth, the tendency of gambling addiction appears in the order of cryptocurrency and income level. It is necessary to warn of the risks of virtual currency and stock investment, to prepare measures to regulate credit loans, and to prepare policies for financial programs for the younger generation. In the future, we propose in-depth research through long-term follow-up and comparative studies with overseas cases.
Purification, Distribution, and Characterization Activity of Lipase from Oat Seeds (Avena sativa L.)
Jung, Hyuk,Moon, SangJun The Korean Society for Applied Biological Chemistr 2013 Applied Biological Chemistry (Appl Biol Chem) Vol.56 No.6
Plant lipases have been chiefly studied as an esterase for hydrolyzation of triacylglycerol (a true lipase), which supplies energy for seed germination. Lipases are widely distributed in plants, animals, insects, and microorganisms. However, recent studies suggest that plant lipases have physiological functions other than triacylglycerol hydrolysis. In the present study, a plant lipase that has enzyme properties distinct from those of a true lipase was purified and characterized from oat seedlings. The lipase was purified 189-fold to a 0.53% purification ratio with high specific activity (34.656 U/mg). Analysis of the protein by Sodium dodecyl sulfate polyacrylamide gel electrophoresis showed a homogenous purified lipase. The lipase had higher enzyme specificity to monoacylglyceride and short chain fatty acids. Synthesis of the lipase was active at an early stage of germination for 6 days and decreased thereafter. Most of the lipase was found in the upper part of the oat seedling excluding the root. Within the young leaves, the lipase is located only in vessels and sieve tubes. However, infection of a pathogen, Pseudomonas syrinae pv. oryzae, elevated the lipase synthesis. In addition, the lipase had an ability to hydrolyze E.coli lipopolysaccharide. These results suggested that oat lipase may play a physiological role in defense against pathogens.
Ki-young Moon,Won-Jun Choi,Sangjun Son,Seyeon Jung,이시진,신두철 물리치료재활과학회 2022 Physical therapy rehabilitation science Vol.11 No.4
Objective: The purpose of this study was to investigate the correlation between activity of daily living and social psychology and work mind of office workers with non-specific chronic neck pain (NSCNP). Design: Crossed-sectional studyMethods: 86 patients with NSCNP were recruited for this study. Neck disability index (NDI) and Numerical pain rating scale (NPRS) were used to check the pain intensity and disability of patients with neck pain. To find out the occupational factors of the subjects, the Korean version of Latack Coping Scale was used. And,To find out the socio-psychological factors of the subjects, the Korean version of depression anxiety stress scale (DASS-21) was used. We performed correlation for each variable. Results: The correlation between NPRS and NDI and DASS-21 Scale were clear positive correlation (p<0.05). There was no statistical significance between the LATACK control group and the pain and disability index (p>0.05). A clear positive correlation was established between the avoidance group of LATACK and pain (p<0.01). Conclusions: Through this study, it is necessary to have time to manage depression, anxiety, and stress in the treatment of neck pain in office workers who spend a lot of time sitting. In addition, it is thought that there should be the ability to control oneself about one's duties in the workplace.
Youjin Hong,Sangjun Lee,Sungji Moon,Soseul Sung,Woojin Lim,Kyungsik Kim,Seokyung An,Jeoungbin Choi,Kwang-Pil Ko,Inah Kim,Jung Eun Lee,Sue K. Park 대한예방의학회 2022 예방의학회지 Vol.55 No.6
Objectives: This study aimed to identify the current patterns of cancer incidence and estimate the projected cancer incidence and mortality between 2020 and 2035 in Korea. Methods: Data on cancer incidence cases were extracted from the Korean Statistical Information Service from 2000 to 2017, and data on cancer-related deaths were extracted from the National Cancer Center from 2000 to 2018. Cancer cases and deaths were classified according to the International Classification of Diseases, 10th edition. For the current patterns of cancer incidence, age-standardized incidence rates (ASIRs) and age-standardized mortality rates were investigated using the 2000 mid-year estimated population aged over 20 years and older. A joinpoint regression model was used to determine the 2020 to 2035 trends in cancer. Results: Overall, cancer cases were predicted to increase from 265 299 in 2020 to 474 085 in 2035 (growth rate: 1.8%). The greatest increase in the ASIR was projected for prostate cancer among male (7.84 vs. 189.53 per 100 000 people) and breast cancer among female (34.17 vs. 238.45 per 100 000 people) from 2000 to 2035. Overall cancer deaths were projected to increase from 81 717 in 2020 to 95 845 in 2035 (average annual growth rate: 1.2%). Although most cancer mortality rates were projected to decrease, those of breast, pancreatic, and ovarian cancer among female were projected to increase until 2035. Conclusions: These up-to-date projections of cancer incidence and mortality in the Korean population may be a significant resource for implementing cancer-related regulations or developing cancer treatments.
즉시연금보험 상품구조에 관한 연구 - 만기환급형을 중심으로
김호균 ( Hokyun Kim ),문상준 ( Sangjun Moon ) 한국연금학회 2022 연금연구 Vol.12 No.1
최근 많은 즉시연금 관련 분쟁이 발생하고 있는데, 본 연구는 이 분쟁이 발생한 근본적인 원인을 사업비 선취방식(Front-end loading)의 상품구조에서 발생한 것으로 보인다. 이를 위해서 즉시연금(만기환급형)의 연금액 산출식으로부터 사업비 부과체계, 연금액 산출방법, 공시이율 적용 구조 및 최저보증이율로 예시된 연금액을 살펴보면서 상품구조를 분석한다. 그 결과, 즉시연금을 사업비 후취방식(Back-end loading)으로 설계하는 것과 은행 정기예금 상품과 손쉽게 비교할 수 있도록 연금액을 공시하는 것을 이 분쟁 예방을 위한 개선방안으로 제시한다. Recently, there have been many disputes related to immediate annuity. This study shows that the root cause of these disputes is the product structure of the front-end loading method. To this end, the product structure is analyzed from the calculation formula of the maturity refund type immediate annuity, by examining the loading system, annuity amount calculation method, the structure of applying Disclosed Interest Rate, and annuity amount exemplified by the minimum guaranteed rate. As a result, designing a term-certain with money back immediate annuity as a back-end loading method and disclosing the annuity amount so that it can be easily compared with bank deposit are suggested as improvement measures to prevent this dispute.