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학교스포츠클럽 활동 참여 중학생의 교우관계, 사회성 및 학교생활만족도의 관계
조현민(Cho, Hyeon-Min),최영준(Choi, Young-Jun) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.6
The purpose of this study was to identify the relationships among the peer relationship, socialization and satisfaction of school life of school sports club activity participation middle school students. To achieve the purpose, the total 802 subjects were sampled from middle school students in B city and Y city. To process data, AMOS 21.0 and SPSS PC+21.0 Version statistical program for WINDOWS were used and descriptive statistic, confirmatory factor analysis, reliability, correlations and structural equation model analysis were conducted. Through such processes and method of the study as above, the results of this study are as follow. Firstly, it was discovered that the peer relationship had static influence to the socialization. Secondly, the peer relationship affect the satisfaction of school life. Third, it showed that the socialization gave static influence to the satisfaction of school life.
1.2㎿급 터보블로워용 틸팅패드 저널베어링의 설계에 관한 고찰
조현민(Hyeon-Min Jo),정훈형(Hoon-Hyung Jung),김재실(Chae-Sil Kim),조수용(Soo-Yong Cho) 한국기계가공학회 2011 한국기계가공학회지 Vol.10 No.2
This article provides the systematic design methodology for a tilting pad journal bearing. First the dynamic factors for the bearing are selected with the critical speed analysis. The pad bearing is then designed to have its best mechanical efficiency by simulations with changing of the number of pad and the lubricant flow rate with meeting the design specifications such as metal temperature, clearance and so on. And the simulation results are reviewed to compare with an experimental test. Finally the stability of rotor with the designed bearing is investigated. This methodology is successfully applied to the rotor for 1.2㎿ turbo-blower.
Small non-coding RNA를 발현하는 형질전환 벼의 환경위해성 평가 방법
진병준,전현진,조현민,이수현,최철우,정욱헌,백동원,한창덕,김민철,Jin, Byung Jun,Chun, Hyun Jin,Cho, Hyun Min,Lee, Su Hyeon,Choi, Cheol Woo,Jung, Wook-Hun,Baek, Dongwon,Han, Chang-deok,Kim, Min Chul 한국식물생명공학회 2019 식물생명공학회지 Vol.46 No.3
Since the RNA interference (RNAi) had been discovered in many organisms, small non-coding RNA-mediated gene silencing technology, including RNAi have been widely applied to analysis of gene function, as well as crop improvement. Despite the usefulness of RNAi technology, RNAi transgenic crops have various potential environmental risks, including off-target and non-target effects. In this study, we developed methods that can be effectively applied to environmental risk assessment of RNAi transgenic crops and verified these methods in 35S::dsRNAi_eGFP rice transgenic plant we generated. Off-target genes, which can be non-specifically suppressed by the expression of dsRNAi_eGFP, were predicted by using the published web tool, pssRNAit, and verified by comparing their expressions between wild-type (WT) and 35S::dsRNAi_eGFP transgenic rice. Also, we verified the non-target effects of the 35S:: dsRNAi_eGFP plant by evaluating horizontal and vertical transfer of small interfering RNAs (siRNAs) produced in the 35S::dsRNAi_eGFP plant into neighboring WT rice and rhizosphere microorganisms, respectively. Our results suggested that the methods we developed, could be widely applied to various RNAi transgenic crops for their environmental risk assessment.
유연 회전축의 다물체 동역학 모델링 및 위상 조절법을 이용한 진동 제어
정훈형(Hoon-Hyung Jung),조현민(Hyeon-Min Jo),김재실(Chae-Sil Kim),조수용(Soo-Yong Cho) 한국기계가공학회 2011 한국기계가공학회지 Vol.10 No.1
This article proposes a new technique of the dynamic model using multi-body dynamic analysis tool for a flexible main spindle rotor system with a novel phase adjusting control technique for the purpose of an active control of rotor vibration. The dynamic model is used as a plant model. Also in order to make control system, a component parameters and phase controller is composed and simulated by SIMULINK. The vibration is reduced to 50%. Therefore the ADAMS dynamic model for the flexible main spindle rotor and the phase adjusting control techniques may be effective for the suppressing the vibration and helpful for the future active control for rotor vibration.
봉성준,전경화,진형민,조현민,원용성,박우배,Bong Sung-Joon,Jun Kyong-Hwa,Chin Hyung-Min,Cho Hyeon-Min,Won Yong-Sung,Park Woo-Bae 대한위암학회 2004 대한위암학회지 Vol.4 No.4
조기위암은 림프절 전이에 상관없이 위점막이나 점막하층까지 암이 국한된 것으로 정의된다. 진행성 위암에 동반된 간전이율은 $5\~12\%$이나 조기위암에 동반된 간전이는 드물다. 64세 여자 환자나 상복부 통증을 주소로 성빈센트 병원에 내원하여 시행한 위내시경 검사에서 위전정부에 폴립형 종괴가 있었으나 간전이 소견은 없었다. 수술 시 간에 단일 전이가 발견되었으며, 2군 림프절을 포함하여 원위부 아전절제술과 전이된 간이 절제술을 시행하였다. 조직검사에서 위전정부의 종괴는 선종의 일부에 선암성 변화가 있었고 이는 위점막에 국한되어 있었으며, 절제된 간은 선암의 소견을 보였다. 저자들은 조기위암에 동반된 간전이 1예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Early gastric cancer (EGC) is defined as a carcinoma confined to the mucosa or submucosa of the stomach, with or without lymph-node metastasis. Synchronous liver metastasis is 5. $12.8\%$ in advanced gastric cancer, but is very low in EGC. A 64-year-old woman was admitted to St. Vincent's Hospital with a complaint of epigastric pain. Gastrofiberscopic examination showed a polypoid mass on the gastric antrum. Abdominal computed tomography demonstrated an intraluminal polypoid mass in the gastric antrum, but no tumor mass in the liver. A laparotomy revealed a solitary liver metastasis, we performed a distal partial gastrectomy with a group-2 lymph-node dissection and resection of metastatic liver tumor. Histologic examination showed a tubular adenoma with a focal carcinomatous change, Which was confined to the gastric mucosa and to the metastatic adenocarcinoma in the liver. We present a case of early gastric mucosal cancer associated with synchronous liver metastasis, along with a review of the literature.
이소성 췌장 조직을 동반한 반전된 메켈게실에 의한 성인의 장중첩증
전예원(Ye-Won Jun),계봉현(Bong Hyun Kye),김형진(Hyung Jin Kim),조현민(Hyeon-Min Cho),유창영(Changyoung Yoo),황성수(Seong Su Hwang) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.6
Adult intussusception is rare involving of only 1% of the causes of bowel obstruction. We report a case of a 39-year-old female with intussusceptions due to inverted Meckel’s diverticulum. She visited our hospital for diffuse abdominal pain during 1 week and aggravated abdominal pain for 2 days. Vital signs were stable, and there was periumbilical tenderness. She had no history of abdominal operation. CT scan showed a 3.7×2.1 ㎝ of fatty mass with focal intussusception in the distal ileum. When the emergency operation was performed, the patient was found to be suffering from ileocolic intussusception. A manual reduction of intussusception showed inverted Meckel’s deverticulum at 65 ㎝ proximal to the ileocecal valve, and the segmental resection of small bowel including a Meckel’s diverticulum was performed. Pathologic examination revealed a Meckel’s diverticulum containing a 0.6×0.6 ㎝ sized aberrant pancreas.