축산환경 : 고도 및 수송거리별 출하 한우의 도체특성 및 표면육색의 변화

이종인 ( Jong In Lee ),이정우 ( Jeong Woo Lee ),박병기 ( Byung Ki Park ),장용설 ( Yong Seol Jang ),최장근 ( Chang Kun Choi ),곽돈규 ( Don Kyu Kwak ),성철완 ( Cheol Wan Sung ),안준상 ( Jun Sang An ),신종서 ( Jong Suh Shin ) 한국동물자원과학회 ( 구 한국축산학회 ) 2012 한국축산학회지 Vol.54 No.1

본 연구는 고도 차이 혹은 수송 거리의 차이가 한우(거세우 및 암소)의 도체특성, 표면육색 및 혈중 cortisol 농도 변화에 미치는 영향을 검토하기 위해 실시되었다. 공시동물은 총 190두로 이중 거세한우는 118두 암소는 72두였다. 자료는 사육 고도(100, 200, 300, 400 및 500m) 혹은 수송 거리(50, 100, 150, 200 및 250 km)에 따라 분석하였다. 사육 고도의 차이가 거세한우 및 암소의 육량 및 육질 형질 변화에 미치는 영향은 적었으며, 수송 거리의 차이가 거세한우 및 암소의 육량 형질에 미치는 영향은 없는 것으로 나타났다. 또한 수송 거리의 차이가 거세한우 및 암소의 근내지방도, 육색 및 지방색에 미치는 영향과 사육 고도 혹은 수송 거리의 차이가 거세한우 및 암소 등심의 명도, 적색도, 황색도, 선명도 및 색상색에 미치는 영향은 낮은 것으로 나타났다. 암소의 경우 사육고도 100m에서 200m에 비해 등심의 명도가 증가되었으며(p<0.05), 거세한우의 경우 수송 거리 250km 그리고 암소의 경우에는 200km에서 등심의 명도가 낮아지는 경향을 보였다. 한편, 혈중 cortisol 농도는 낮은 사육 고도에 비해 높은 사육 고도에서 낮아지는 경향을 보였으나, 통계적인 유의차는 없었다. 수송 거리가 거세한우 및 암소의 cortisol 농도에 미치는 영향은 없었다. 따라서 본 연구의 결과에서 사육 고도 혹은 수송 거리가 한우의 생산성에 미치는 영향은 적은 것으로 판단된다. The purposes of the study were to examine the changes in carcass traits and surface meat color, and cortisol concentration by different altitudes and shipping distances for steer and cow. The experimental animals were shipped from Kangwondo, Kyunggido, Choongchungdo, and Kyungsangdo to Wonju LPC. The animals were examined for yield traits, quality traits, carcass grade, lightness, redness, yellowness, croma value, and cortisol concentration by different altitudes and shipping distances. The results showed that the carcass traits of steer like back fat thickness were not different by shipping distances of 100km, 150km, and 200km. However, the fat thickness was higher in steers shipped from 250km than 100km, 150km, and 200km distance. Rib- eye area was reduced significantly in 200km and 250km than 50km. Yield index and yield grade were significantly low in 250 km than 50-200km. However, meat color, fat color, texture, mature, and quality grade had no differences between shipping distances. Marbling score was not different in 50-200km. However, the marbling score in 250 km was significantly lower than that of 50 km. In case of surface meat color by shipping distance, redness, yellowness, chroma value, and hue-angle were not different in shipping distance of 250km. The lightness had similar result in 50-200 km. However, in case of 250 km the lightness was significantly low. The REA of cow carcass by shipping distance had no differences by shipping distance. The BET had similar results in 50-150km. However, it had significantly thick in 200km. The yield index and yield grade had no differences in 50-150km. However, yield index and grade were significantly low in 200km. The carcass trait of cow had no differences in all items by shipping distance. Although the carcass traits and the BET for steer by altitude had no differences between 100, 200, 300 and 500m, but those were significantly thick in 400m. And the yield index and the yield grade at altitude 400 m were lower than that of other altitudes. The quality traits and the quality grade had no differences between 100, 200, 300, 400, and 500m altitudes. The yield traits, quality traits, yield grade, and quality grade had no significant differences by altitudes. In case of yield index of cow for 300m was low than the cases of 100m and 200m. The surface meat color for steer and cow had no differences by altitudes. However, the lightness of cow had positive result in 100m than 200m and 300m. In case of steer and cow the cortisol concentration by shipping distance was high as the shipping distances were longer. However, the cortisol concentrations of steer and cow by altitudes were decreased as the altitudes were increased. From the above results carcass traits and carcass grade were decreased and the cortisol concentration was increased as the altitudes were decreased for steer and cow.

충격강도 및 결정화 속도가 개선된 Fused Deposition Modeling 방식 3D 프린터용 Poly-L-lactic acid 기반 필라멘트

이종인(Jong In Lee),오승주(Seung-Ju Oh),정지수(Ji Su Jeong),황영재(Young Jae Hwang),배진우(Jin Woo Bae),남병욱(Byeong Uk Nam) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.7

열가소성 플라스틱의 필라멘트를 사용하는 Fused deposition modeling (FDM) 방식의 3D 프린터는 다른 종류의 3D 프린터에 비해 저렴한 비용과 편의성 때문에 다양한 산업분야에서 사용되고 있다. Poly-L-lactic acid (PLLA)는 생분해성이 있는 친환경 바이오 플라스틱으로 변형이 거의 없으며, 높은 탄성률을 가졌기 때문에 FDM 방식 3D 프린터용 필라멘트로써 많은 관심을 받고 있다. 하지만, PLLA는 FDM 방식 3D 프린터용 필라멘트로 사용되기에는 낮은 충격 강도와 느린 결정화 속도를 보인다. 본 연구에서는, PLLA의 낮은 충격강도와 느린 결정화 속도를 개선하기 위하여 PLLA에 생분해성 플라스틱이면서 충격보강제인 Poly(butylene adipate-co-terephthalate) (PBAT)와 핵제인 Talc를 함께 첨가하여 이축 압출기를 통해 용융 블렌드하였다. PBAT의 첨가는 PLLA의 충격강도를 33 J/m에서 54 J/m 까지 증가시켰다. 반면, PLLA/PBAT 블렌드 조성에서 Talc의 첨가는 PLLA의 충격강도를 46 J/m까지 감소시켰지만, 결정화 온도를 96.1 ℃까지 증가시켰다. 특히, Talc가 3 phr 첨가된 PLLA/PBAT (80/20 wt%) 블렌드 조성은 최적의 충격강도(48 J/m)와 결정화 온도 (94.4 ℃)를 달성하였고, neat PLLA보다 우수한 충격강도 및 빠른 결정화 속도를 보였다. Fused deposition modeling (FDM) type 3D printers, which use thermoplastic filaments, find application in a greater number of industries compared to other types of 3D printers because of their low cost and convenience. Poly-L-lactic acid (PLLA) has received considerable attention as a filament material for the FDM type 3D printer as it is an eco-friendly bioplastic that is biodegradable. Besides, it has lower shrinkage and a high modulus. However, PLLA has a low impact strength and a slow crystallization rate which makes it unsuitable for use as a filament in an FDM type 3D printer. To improve these properties, in this study, PLLA was melt-blended using a twin-screw extruder into poly(butylene adipate-co-terephthalate) (PBAT) and Talc as an impact modifier and nucleating agent, respectively. The addition of PBAT increased the impact strength of the PLLA from 33 J/m to 54 J/m. However, the addition of Talc in the PLLA/PBAT blend decreased the impact strength of the PLLA from 54 J/m to 46 J/m while the crystallization temperature increased to 96.1 ℃. In particular, the Talc addition of 3 phr in the PLLA/PBAT (80/20 wt%) blend achieved optimum impact strength (48 J/m) and crystallization temperature (94.4 ℃), resulting in the superior impact strength and faster crystallization rate compare to neat PLLA.

무봉합 위십이지장 문합술

이종인,김진영,정진호,Lee, Jong-In,Kim, Jin-Young,Jeong, Jin-Ho 대한위암학회 2002 대한위암학회지 Vol.2 No.1

A gastroduodenostomy is the most physiological reconstruction after a distal gastrectomy. However, a gastroduodenostomy with either sutures or staples has many complications. These include bleeding, leakage and stenosis. A sutureless gastroduodenostomy with a biofragmentable anastomosis ring (BAR) in was used adenocarcinoma patients to prevent these complications from 1999. A BAR is composed of polyglycolic acid and Barium sulfate to allow for X-ray visualization. Hardy in first introduced the BAR in 1985. Since then, it has been used in an anastomosis of the colon or small bowel surgery but its use in a gastroduodenostomy is the first trial in the world. A 70 year male patient, old who received a subtotal gastrectomy (Billroth I), underwent a A sutureless gastroduodenostomy with a BAR. The gastroduodenostomy with the BAR was watertight and maintained the initial burst strength in the gastrografin X-ray study performed at the postoperative 1 week. The BAR began to fragment 3 weeks after the operation and disappeared from the digestive tract completely. The diameter of the anastomosis site was sufficient for passed foods. No other secondary changes from remained foreign bodies were found in the endoscopic examination. In a second operation to treat a primary hepatoma, there was no adhesive changes around the gastroduodenostomy site. In conclusion, a sutureless gastroduodenostomy with BAR is a safe, easy and efficient reconstructive method after a distal gastrectomy.

5, 18 광주민주화운동 관련인물의 미국에 대한 인식: 윤한봉과 윤상원을 중심으로

이종인 ( Jong In Lee ) 전북대학교 사회과학연구소 2012 지역과 세계 Vol.36 No.2

The year of 1979, the world politics were undergoing upheavals with a series of historic events. The Chinese invasion into Vietnam came on the morning of 17 February 1979 and the Soviet Union attack on Afghanistan took place in the very same year. Korea was no exception. On October 26th, 1979, the President of South Korea, Park Chung Hee and five others including the president`s bodyguard were shot dead by the chief of his intelligence service, Kim Jea Kyu. The Yushin regime was overthrown following President Park`s assassination. After this tragic incident, with rise of the New Military Regime, a series of historic events such as the 12.12 Military Insurrection, the military coup in 1980 and the May 18 Gwangju Democratic Movement took place in Korea. The Gwangju Democratic Movement, which was first disregarded, is now seen as one of the most important pro-democracy movements. On March, 1982, Korean college students set a fire in the U.S. Culture Center. This served as a catalyst in fueling anti-Americanism among Koreans. It also clearly showed dramatic changes in Koreans` attitude toward the U.S. after America took part in the genocide in Gwangju, a Southern Korean city, in 1980. What happened in the city was not just a reminder of the New Military Regime or the uprising against the military government but also the U.S.`s role in the tragic event. While reading books on the subject of the Gwangju democratic movement, I found two different persons who excited my scholastic curiosity. The two, Yoon Han Bong,the last wanted man involved in the Gwangju democratic movement and Yoon Sang Won, a citizen soldier of the movement, led very different lives but shared something in common. The purpose of this paper is to shed new light on the role of the U.S. in the Gwangju democratic movement, based on the two important figures` geopolitical perception in line with the movement. The true meaning of liberal democracy could be found in the death of Yoon Sang Won who dedicated his life to liberal democracy. After all, his strong commitment toward democracy was later carried out by Yoon Han Bong who suffered from the guilt conscience for not participating in the Gwangju democratic movement. The paradoxical link between the two important figures needs to be reexamined in terms of academic diversity.

낙석방지시설 적용을 위한 팽창메탈의 특성 연구

이종인(Lee Jong-In),정춘교(Jung Chun-Gyo),김성호(Kim Sung-Ho),황영철(Hwang Yeong-Cheol),이승호(Lee Seung-Ho) 한국지반환경공학회 2011 한국지반환경공학회논문집 Vol.12 No.9

산지가 많은 우리나라는 도로 및 철도건설을 위해 사면을 형성하는 구간이 많고, 사계절의 뚜렷한 차이로 인해 해빙기에 암블록의 이완현상 발생과 연평균 강우량의 2/3 정도가 여름철에 집중 발생되는 기후특성이 있으며, 최근 기상이변에 따른 집중호우 등으로 낙석 및 산사태와 같은 도로절개면 붕괴사고가 잦은 편이며, 해마다 장마철이 되면 이와 관련된 사고소식을 매스컴을 통해 쉽게 접할 수 있다. 낙석 발생 시 인명과 재산 피해를 최소화하기 위하여 절개지에 대한 보강공법의 개발 및 현장 적용성에 대한 연구 등이 활발히 이루어지고 있지 않는 실정으로 이에 대한 연구의 필요성이 부각되고 있다. 특히 낙석방지망의 부분적 취약점(일체화가 되지 못함)으로 인해 낙석방지망이 충분한 지지능력을 발휘하지 못하는 문제가 발생됨에 따라 국내에서도 보다 높은 낙석에너지를 지지할 수 있는 낙석방지망에 대한 연구가 필요할 것으로 판단된다. 이에 본 연구에서는 낙석방지망의 대체재료로서 팽창메탈의 적용성을 실험적으로 검증하고, 그 특성에 관해 연구해 보고자 하였다. 시험결과 팽창메탈은 우수한 강도와 일체화된 재료특성으로 기존 PVC망에 비해 최대지지하중이 높게 나타났으며, 현장시험의 흡수가능에너지 또한 높게 나타나 낙석방지망의 대체재료로서 활용이 가능한 것으로 판단된다. There are many mountains in Korean Peninsula, and those used for the construction of roads and railways sectors are forming slopes. Slope collapse occurs with falling rocks and landslide because of the relaxation of the thawing rocks. The heavy rain in summer can also significantly contribute to the process, and abnormal climate change is much more influential than before. Therefore, rockfall-related accidents in rainy season are easily accessible in media every year. There has been a lot of research on application of strengthening compensation of the sections in order to minimize casualties and property damage. Rockfall Protection Net, however, has not been focused on much in the field yet. This study highlights the need of Rockfall Protection Net, since it can segregate the falling rocks inside the net relatively safely. Although there has been a little doubt about the effectiveness of rockfall protection facilities, it is obvious that relevant studies dealing with the solidity of the net are necessary for the rockfall protection net to be capable of supporting rockfall energies. As a result, Expanded metal strength is much more durable compared to the PVC coating net, and it is regarded as an excellent alternative material for the Rockfall Protection Net. In this study, the applicability of Expanded Metal as the alternative of Rockfall Protection Net is verified experimentally.

불임환자 치료에 있어 FSP와 IUI 시술방법에 따른 비교

이종인(Jong In Lee),허영문(Young Moon Hur),전은숙(Eun Sook Jeon),윤정임(Jung Im Yoon) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.12

Objective : To investigate the efficiency of fallopian tube sperm perfusion in comparision with conventional intrauterine insemination. Method : From November 1998 to October 1999, 194 patients, undergone 219 cycles were enrolled in this study. After ovulation induction with three different protocols, (ⅰ)CC alone or CC+hCG ⅱ)CC+HMG+hCG ⅲ)FSH or HMG alone+hCG) or natural cycle, fallopian tube sperm perfusion(FSP)(n=104) was performed and its result was compared with conventional intrauterineinsemination (IUI)(n=115). Results : In this study, causes of infertility include ovulatory dysfunction (n=32), unexplained infertility(n=107), endometrial factor(n=18), and cervical factor(n=29). Pregnancy rates in the patients received IUI were 29.4% for ovulatory dysfunction, 17.5% for unexplained factor, 14.3% for endometrial factor, 31.5% for cervical factor and 25.0% for tubal factor. Pregnancy rates in the patients recieved FSP were 26.7% for ovulatory dysfunction, 38.0% for unexplained factor, 36.4% for endometrial factor, 30.0% for cervical factor and 18.2% for tubal factor. Total pregnancy rates in the FSP group and IUI group were 34.4%(32/93) and 22.8% (23/101) respectively. Especially, FSP offered significantly high pregnacy rate for the treatment of unexplained infertility. Conclusion : This study suggests that FSP be not only simple non-invasive method but also very effective one. We conclude that FSP is superior to conventional IUI in the patients with unexplained infertility.

경종작물분야의 미래유망기술 및 전략기술에 관한 우선순위 재설정 연구

이종인 ( Jong In Lee ),정윤필 ( Yun Pil Jung ),신동철 ( Dong Cheol Shin ),노성훈 ( Sung Hoon Ro ),조근태 ( Keun Tae Cho ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2009 강원 농업생명환경연구 Vol.21 No.-

The study was focused on setting priority for future core technologies in crop production technology using AHP. 46 technologies were derived by specialists meetings. Evaluation criteria for the priority setting were decided as `technology`, `market oriented`, and `public concerns`. 9 specialists in crop production technology answered the questionnaire for AHP. As the results, `market oriented` was decided as the most important evaluation criterion. `Technology realization` in `technology` criterion, `investment profit` in `market oriented` criterion, and `spillover effects on industry` in `public concerns` criterion were decided as sub-criteria in each criterion. The most important technology was Development of technology for High-quality brand rice and standardization of rice traceability.

방송의 시사·보도 프로그램의 다양성 연구: 패널의 속성을 중심으로

홍주현(Ju-Hyun Hong),조인숙(In-Sook Cho),이종임(Jong-Im Lee) 한국정치정보학회 2024 정치정보연구 Vol.27 No.1

In a situation where expertise and overlapping appearances of panels appearing on current affairs programs are a problem, this study conducts a content analysis and network analysis of the gender, age group, occupation, and political inclinations of panels appearing on current affairs and reporting programs during the five years of the Moon Jae-in administration. As a result of content analysis, more men than women appeared on the broadcast, and over 70% of the total was in their 50s or older. Regarding political orientation, there were relatively more progressive panelists than conservative panelists. The most preferred occupation was a member of the National Assembly. On terrestrial broadcasting, there were relatively more progressive panels than conservative panels, and among the professions, lawmakers and professors appeared. Looking at the top 20 influential panelists during the Moon Jae-in administration, there were many overlapping appearances on multiple channels. Frequent appearances on broadcasts give viewers the perception that person is an important person, so the repeated appearance of a specific person is not desirable in terms of diversity of opinion. This study is significant in that it analyzed all panels that appeared on broadcast current affairs and reporting programs during the five years of the Moon Jae-in administration, and there is a need to ensure diversity in terms of gender, age, occupation, and political orientation when selecting panelists on broadcast.

조사논문 : 한국인의 쇠고기 소비패턴 -거주 국가에 따른 비교분석-

이종인 ( Jong In Lee ),( Zhi Feng Gao ),오경태 ( Kyung Tae Oh ),오송련 ( Song Lian Wu ),신동민 ( Dong Min Shin ),이정숙 ( Jeong Suk Lee ),최종산 ( Jong San Choi ),김희걸 ( Xi Jie Jin ) 한국축산경영학회,농업정책학회(구 한국축산경영학회) 2014 농업경영정책연구 Vol.41 No.4

Koreans prefer Korea beef to imported beef. The volume of imported beef is being increased in Korea. Consumers preference may be changed when they consume the imported beef more. The purposes of this study are to analyze the changes of the Koreans`` preference and perception to Korean beef and imported beef. Koreans who are living in Korea prefer Korean beef to imported beef. However, Koreans who are living in U.S.A. may prefer U.S. beef or keep neutral between the two kinds of beefs. Questionnaire were given to Koreans who were living in Korea and U.S.A. from January to April in 2014. SPSS 18.0 was used for the analyses. T-test was used for comparative analysis by living country about beef and multiple regression analysis was used for analyzing impacts of age and period of reside in United States to quality evaluation about Korean beef and U.S. beef. In the result, Korean consumers had differences in all perception variables about U.S. beef by living country, but hadn``t in Korean beef. And Korean consumers living in Korea and United States evaluated that Korean beef had better quality than U.S. beef. Finally, only period of reside in United States had positive impacts to perception of U.S. beef quality. Korean beef should try to keep high quality and image. Government need to active support and intensive control beef traceability system and origin labeling. Imported beef market may be expanded in the future. So prepare countermeasure for low-grade Korean beef about increasing of the imported beef in Korean market.

연구논문 : 강간폭로, 순결, 결혼: 재미한인여성들의 사유(思惟)

이종인 ( Jong In Lee ) 한국문화인류학회 2007 韓國文化人類學 Vol.40 No.2

Rape constitutes the most under-reported crime in the United States, particularly among Asian-American women. Unreported rapes impede intervention, victim supports, and the social recognition and information necessary for policy-making. Addressing these problems, this study explores ethnic cultural impediments to Korean-American women`s disclosure of rape, using both qualitative and quantitative research methods. Qualitative data for this study were collected between 1994 and 1999 from in-depth interviews with 36 Korean-American women and three counselors working in Korean-American communities. Quantitative data were collected in May of 2000 from self-administered surveys with 219 Korean-American women. Correlation analyses of the survey data suggest that the women`s concerns about marriage would decrease their likelihood of reporting a rape incident if it occurred. Marital concerns included the possibility of decreasing marriage prospects for single women, and concerns of potential conflicts or even diss olution of marriage, if already married. In contrast, the women`s concerns about security would increase their likelihood of reporting a rape incident if it occurred. The marital concerns reflected the power of ethnic cultural strictures on female sexuality. The women cared about Korean or Korean-American mens` demand for a woman`s untainted virginity and sexual commitment to one husband. The women were also concerned about marriageability, because of the importance of marriage as a providing for a woman`s legitimate sexual expression, child-bearing, security and her social or symbolic status. The power of Korean cultural models was enforced by a set of ideological, institutional, and material conditions. They included Confucian and Christian restrictions on female sexuality and ways of living, preference for intra-ethnic marriage, male-oriented marriage for the purpose of raising a family, and Korean-American women`s ethnic and class statuses. In conclusion, Korean-American women`s likelihood of disclosing a rape incident are discouraged by the masculine ideals emphasizing the value of a woman`s sexual purity in marriage. These findings suggest that social service providers for a Korean-American female rape victim should be sensitive about incorporating her Korean or Korean-American male partner into the process of providing support for the victim. These findings also suggest that it is necessary to change the masculine strictures on female sexuality in order to encourage women to disclose the occurrence of a rape. A new and alternative cultural norm of a Korean American woman`s sexuality would enable her to express her sexual subjectivity.