단순 전단변형에 의한 15Cr 산화물 분산강화 강의 미세조직 변화

진현주,강석훈,김태규,Jin, Hyun Ju,Kang, Suk Hoon,Kim, Tae Kyu 한국분말야금학회 2014 한국분말재료학회지 (KPMI) Vol.21 No.4

15Cr-1Mo base oxide dispersion strengthened (ODS) steel which is considered to be as a promising candidate for high- temperature components in nuclear fusion and fission systems because of its excellent high temperature strength, corrosion and radiation resistance was fabricated by using mechanical alloying, hot isostatic pressing and hot rolling. Torsion tests were performed at room temperature, leading to two different shear strain routes in the forward and reverse directions. In this study, microstructure evolution of the ODS steel during simple shearing was investigated. Fine grained microstructure and a cell structure of dislocation with low angle boundaries were characterized with shear strain in the shear deformed region by electron backscattered diffraction (EBSD). Grain refinement with shear strain resulted in an increase in hardness. After the forward-reverse torsion, the hardness value was measured to be higher than that of the forward torsion only with an identical shear strain amount, suggesting that new dislocation cell structures inside the grain were generated, thus resulting in a larger strengthening of the steel.

광범위하게 발생한 자궁경부 편평세포암의 피부전이

진현주 ( Hyun Ju Jin ),김원정 ( Won Jeong Kim ),문제호 ( Je Ho Mun ),송마가렛 ( Margaret Song ),김훈수 ( Hoon Soo Kim ),고현창 ( Hyun Chang Ko ),김문범 ( Moon Bum Kim ),김병수 ( Byung Soo Kim ) 대한피부과학회 2014 대한피부과학회지 Vol.52 No.2

Carcinoma of the uterine cervix is a common malignancy for women in Korea. It frequently metastasizes to the lungs, bone, or liver, but cutaneous metastasis is rare, with a reported incidence of only 1.3%. In cases of cutaneous metastasis, the lesions present in the forms of nodules, ulcers, or plaques, and are generally located in the abdominal wall, vulva, anterior chest wall, lower extremities, and upper extremities. Here, we describe a case of a 64-year-old woman diagnosed with cutaneous metastases from squamous cell carcinoma of the uterine cervix on both flanks, lower abdominal wall, and both inguinal areas, three years after receiving chemoradiation therapy. At presentation, the primary carcinoma had been resolved completely. Histological and immunohistochemical findings revealed intact epidermis and infiltration of tumor cells in the dermis, which showed positivity for cytokeratin 5/6, cytokeratin 7, and tumor protein 63, consistent with metastatic squamous cell carcinoma of the uterine cervix.

스파르가눔증 스파르가눔증 진단에서 초음파 검사의 유용성

진현주 ( Hyun Ju Jin ),문제호 ( Je Ho Mun ),좌승욱 ( Seung Wook Jwa ),송마가렛 ( Mar Ga Ret Song ),고현창 ( Hyun Chang Ko ),김병수 ( Byung Soo Kim ),김문범 ( Moon Bum Kim ),김훈수 ( Hoon Soo Kim ) 대한피부과학회 2014 대한피부과학회지 Vol.52 No.12

Sparganosis is a kind of parasitic skin disease caused by sparganum, the plerocercoid larvae of the taper worm of the genus Spirometra. Sparganosis usually manifests as migrating or fixed subcutaneous nodules; therefore, it should be differentiated from lipoma, cysts, and cutaneous malignancies. Although the final diagnosis of sparganosis in humans depends on the identification of the worm in an infected tissue, suspicion for the presence of the parasite and careful history taking are important before making the diagnosis. However, it might be difficult for a clinician to suspect the existence of sparganosis because the incidence of this disease is extremely low. Therefore, an effective method for differentiating sparganosis from other skin disorders is needed. We suggest that ultrasonography could be an answer to this problem, on the basis of our experience of a case of cutaneous sparganosis in a 65-yearold woman showing very characteristic ultrasonographic findings. (Korean J Dermatol 2014;52(12):907∼910)

압연에 있어 판 두께 제어의 불안정화 방지제어에 대하여

진현주(Hyun-ju Jin),타니모토 스나오(谷本直) 대한전기학회 2010 정보 및 제어 심포지엄 논문집 Vol.2010 No.10

미경산 모돈의 임신기 사육형태가 파행, 피부손상 및 혈액성상에 미치는 영향

민예진(Ye Jin Min),김조은(Jo Eun Kim),김두완(Doo Wan Kim),정용대(Yong Dae Jeong),조은석(Eun Seok Cho),사수진(Soo Jin Sa),정현정(Hyun Jung Jung),진현주(Hyun Ju Jin),최요한(Yo Han Choi) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.9

본 연구는 미경산 모돈의 임신기 사육형태가 파행, 피부손상 및 혈액성상에 미치는 영향을 구명하기 위해 수행하였다. 본 연구 수행을 위해 미경산돈(Landrace×Yorkshire; 210.67±2.22 ㎏) 40두를 공시하였으며, 4처리 10반복, 반복당 1두씩 완전임의 배치하였다. 처리구는 일반스톨(IS, Individual Stall; 0.65×2.3 ㎡)과 군사사육 형태인 반스톨(SS, Short Stall; 0.65×3.7 ㎡), 자유출입스톨(FAS, Free Access Stall; 3.2×7.7 ㎡) 및 전자식 모돈 급이기(ESF, Electronic Sow Feeder; 4.6×6.0 ㎡)로 총 4처리구로 수행되었다. 시험기간은 임신 56일령부터 110일령까지 수행되었으며, 110일령에 분만틀로 이동하였다. 임신돈 파행과 혈액성상은 전 기간에 걸쳐 처리구 간에 유의적인 차이를 나타나지 않았다. 그러나, 피부손상은 1, 5 및 7주차에서 SS, FAS, ESF가 IS에 비해 유의적으로 높게 나타났다(p <0.05). 또한 3주차와 5주차에서 FAS가 SS보다 피부손상이 유의적으로 높게 나타났다(p <0.05). 본 연구결과를 종합해보면, 미경산 모돈의 임신기 군사사육(SS, FAS, ESF)은 IS에 비해 높은 피부손상을 보이며, 향후 임신돈 군사사육 시 피부손상을 저감할 수 있는 다양한 연구가 필요할 것으로 사료된다. The present study investigated the effects of different gestation housing systems on lameness, skin injuries, and blood constituents in primiparous sows. A total of 40 primiparous sows (Landrace × Yorkshire; average initial body weights, 210.67±2.22 ㎏) were randomly assigned to four treatments. The treatments were individual stalls (IS; 0.65×2.3 ㎡), short stalls (SS; 0.65×3.7 ㎡), free access stalls (FAS; 3.2×7.7 ㎡), and electronic sow feeders (ESF; 4.6×6.0 ㎡). The experiment duration was around 54 days, ranging from 56 days after artificial insemination to 5 days before parturition. The sows were transferred to farrowing facilities at 110 days of gestation. There were no differences in sow lameness and blood constituents between the IS and group housing systems and between the group housing systems. However, the skin injuries at 1, 5, and 7 weeks of the sows in the group housing treatment were higher than that of the sows in IS. In addition, the sows in FAS showed higher skin injuries than those in SS at 3 and 5 weeks. As a result, it was concluded that the group housing systems did not negatively affect lameness and blood constituents but may have resulted in an increase in skin injuries. Therefore, additional research is necessary to reduce skin injuries of sows in group housing.

IL-10 and TNF-α level changes in Oviduct and Endometrium at the Preimplantation Period in Sows

Da-Yeon Jeon(전다연),Soo-Jin Sa(사수진),Hyun-Ju Park(박현주),Hyun-Ju Jin(진현주),Jo-Eun Kim(김조은),Ye-Jin Min(민예진),Yo-Han Choi(최요한),Yong-Dae Jeong(정용대),Jo-Eun Kim(정학재) 한국산학기술학회 2022 한국산학기술학회논문지 Vol.23 No.11

수정란이 착상하는 동안 모체의 생식 기관에서 면역 세포 군집의 변화가 발생하며 이는 임신 과정의 핵심이다. 착상 전·후 기간동안 T 림프구를 포함한 면역 세포는 이식 초기에 생식 기관으로 불러들여지며, T 림프구 중 보조T세포인 Th1과 Th2 사이의 균형은 착상의 성공에 중요한 영향을 미친다. 본 연구에서는 돼지 수정란 착상 전 모체의 난관(OVI), 자궁내막 (ENDO), 자궁 점막층 (UML)에서 Th1, Th2의 균형을 확인하고자 종양괴사인자-알파 (TNF-α)와 인터루킨-10 (IL-10)의 농도를 효소결합 면역흡착 분석법 (ELISA)을 이용해 분석하였다. IL-10의 경우 7일차에 OVI, ENDO, UML에 유의한 차이가 있었으나 (p < 0.01), TNF-α의 경우 모두 유의한 차이가 없었다. IL-10:TNF-α 비율은 OVI에서만 7일째에 유의한 차이가 나타났다 (p < 0.05). 본 연구의 결과는 착상 전 생식 기관별 염증-항염증 기전의 변화를 통해 모체의 생식계가 배아를 수용하는 과정의 일부를 뒷받침할 수 있다. After implantation, dramatic shifts in immune cell populations occur in the maternal reproductive tract, and these changes are key to the implantation and pregnancy process in sows. Immune cells, including T lymphocytes, are recruited during the early implantation period, and an accurate balance between Th1 and Th2 is essential for successful implantation. In this study, the concentration of TNF-α (tumor necrosis factor-alpha) and IL-10 (interleukin-10) in early pregnancy were investigated using an enzyme-linked immunosorbent assay (ELISA) to determine Th1/Th2 ratios in oviduct (OVI), endometrium (ENDO), and the uterine mucosal layer (UML) before implantation. Significant differences in IL-10 levels were observed in OVI, ENDO, and UML tissues on day 7 post-implantation (p < 0.01), whereas TNF-α levels were no different. As regards IL-10 and TNF-α ratios, a significant difference was found on day 2 in OVI tissues (p < 0.05). The result of this study supports the notion that the maternal reproductive system accepts the embryo through changes in preimplantation reproductive system-specific pro-/anti-inflammatory mechanisms.

후보돈 사육기 사료 내 에너지 수준이 번식성적에 미치는 영향

최요한(Yo Han Choi),정용대(Yong Dae Jeong),박현주(Hyun Ju Park),정학재(Hak Jae Chung),사수진(Soo Jin Sa),김조은(Jo Eun Kim),민예진(Ye Jin Min),전다연(Da Yeon Jeon),진현주(Hyun Ju Jin) 한국산학기술학회 2023 한국산학기술학회논문지 Vol.24 No.2

본 연구는 후보돈 육성기 사료 내 에너지 수준이 후보돈 사양성적과 첫 번째 산차의 번식성적에 미치는 영향을 평가하기 위해 수행하였다. 총 60두의 2원교잡종(Landrace×Yorkshire, 평균체중 94.89±5.63 kg) 후보돈을 완전 임의 배치 설계에 따라 체중을 기준으로 두 가지 시험구 중 하나로 배치하였다. 시험설계는 저에너지 사료(Metabolizable energy, ME 3,120 Kcal/kg) 급여구와 고에너지 사료(ME 3,320 Kcal/kg) 급여구로 하였다. 일당증체량, 초종부 일령, 체중 및 등지방두께에서 유의적인 차이는 없었으나 고에너지사료 급여구의 후보돈 증체량이 높은 경향이 관찰되었다(p =0.073). 포유기 재귀발정일, 사료섭취량, 모돈 체중, 등지방두께 및 이들의 변화에서 유의적인 차이는 없었으나(p <0.05), 분만 시 등지방두께(p =0.089), 이유 시 등지방 손실량(p =0.053) 및 포유기 사료섭취량(p =0.073)에서 사료 내 에너지 수준에 따른 차이가 발생하는 경향이 있었다. 번식성적과 모유성상에서도 유의적인 차이는 발견되지 않았다. 본 연구 결과, 후보돈 사료 내 에너지 수준은 초종부 사양성적, 번식성적 및 모유특성에 부정적인 영향을 미치지 않았다. This study evaluates the effects of dietary energy levels during the rearing period of gilts on growth and reproductive performance in the first parity. Based on the body weight, 60 crossbred pigs (Landrace×Yorkshire, average initial body weight 94.89±5.63 kg) were allotted to one of the two treatment groups according to a completely randomized design: low energy level group (ME 3,120 Kcal/kg) and high energy level group (ME 3,320 Kcal/kg). No significant differences were obtained for average daily gain (ADG), age at the first insemination, body weight (BW), and backfat thickness (BF), although the high energy diets showed a tendency to increase the ADG of animals (p =0.073). There was no significant difference between the groups (p <0.05) with respect to weaning to estrous interval, feed intake (FI), BW, BF, and change of lactating sows. However, the high energy diet group tended to differ in BF, BF loss (p =0.053), and FI (p =0.073) of lactating sows. Reproductive performance and milk composition showed no significant difference between groups. Our results indicate that the dietary energy levels of gilts impart no negative effects on growth, reproductive performance, and milk characteristics in firth parity.

닭 돌보기 활동이 중학생의 인성, 정서 및 자아존중감에 미치는 효과

유지현(Ji Hyun Yoo),진현주(Hyun Ju Jin) 한국산학기술학회 2020 한국산학기술학회논문지 Vol.21 No.3

본 연구는 닭 돌보기 활동에 기반한 동물교감교육 프로그램 개발을 위한 예비연구로써 닭과 교감하는 돌보기 활동이 중학생의 인성, 정서 및 자아존중감에 효과가 있는지 검증하고자 하였다. 참여학교는 전에 동물을 키워본 경험이 있으며, 학교 주변에 가금농장이 없는 곳으로 선정하였다. 실험집단은 중학생 11명의 닭 돌보기 봉사단으로 구성되었고 5개월간 닭에게 인사하기, 계사 청소하기, 먹이 주기, 달걀 줍기 등의 활동을 수행하였다. 연구의 효과를 검증하기 위해 인성, 정서 및 자아존중감 척도를 사용하여 실험집단의 사전, 사후 검사를 실시하였으며, 수집된 자료는 SPSS Win 25.0을 이용하여 분석하였다. 그 결과, 닭 돌보기 활동에 참여한 중학생들의 인성, 정서 및 자아존중감이 향상되었다. 본 연구는 닭과 교감하는 돌보기 활동이 중학생의 인성, 정서 및 자아존중감을 향상시키는데 효과적이라는 것을 입증하였으며, 닭 돌보기 활동에 기반한 동물교감교육 프로그램을 개발하기 위한 경험적 사례를 마련하였다는 점에서 의의가 있다. 향후 학교 현장에서 청소년을 대상으로 하는 동물교감교육의 기초자료로 활용될 수 있을 것으로 기대된다. The purpose of this study was to examine whether chicken-rearing activity is effective on the character, emotion and self-esteem of middle school students, as a pilot study for the development of an animal-assisted education program based on chicken-rearing activity. School was selected as the place where students have experience with raising animals before and no poultry farms were located near the school. The experimental group consisted of 11 students as the chicken-rearing group. The conducted activities were greeting chickens, cleaning henhouse, feeding them, and picking eggs up for five months. Character, emotion and self-esteem scales were used as test tools, and pre-testing and post-testing were conducted to verify the effectiveness of the study. Data collected were analyzed by using SPSS Win 25.0 statistical program. As a result, the character, emotional stability and self-esteem of middle school students who participated in chicken-rearing activity were improved. This study is meaningful in that the chicken-rearing activity proved to be effective for the character, emotion and self-esteem of middle school students and prepared an experimental case study for developing an animal-assisted education program based on chicken-rearing activity. It is expected to be useful as basic data of animal-assisted education for adolescents in school.

교양체육 수강횟수 및 수업참여도와 체육가치관의 관계

안주미(An, Ju-Mi),박주영(Park, Joo-Young),진현주(Jin, Hyun-Joo) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.6

The purpose of this study is to investigate the relations of the number of attendance and academic engagement in physical education classes with physical education values on the subject of students taking the classes. The research subjects were selected from university students taking physical education classes in Seoul and Gyeonggi area, and surveys were carried out on 400 students by purposive sampling method. Total 324 participants were used for analysis. The collected data were analyzed by frequency analysis, descriptive analysis, exploratory factor analysis, reliability analysis, one-way ANOVA, correlation analysis and multiple regression analysis in the SPSS WIN Ver 18.0. Results are as follows. First, by analyzing relation of the number of attendance in physical education classes with the physical education values, it is shown that there was not statistically significant relation between the number of attendance in physical education classes and the physical education values. Second, by analyzing the effects of academic engagement in physical education classes on the physical education values, it is found that degree of engagement, engagement environment and engagement experience affected the physical education values significantly. By this study, we found that the academic engagement in physical education classes could affect physical education values. Therefore, active academic engagement in physical education classes can be utilized as a tool to enhance physical education values.

근내지방도가 한우 도체등급 요인, 이화학적 특성 및 관능적 특성에 미치는 영향

이종문,최주희,진현주,김태일,박범영,황도연,고경철,김천제,황규석,Lee, Jong-Moon,Choe, Ju-Hui,Jin, Hyune-Ju,Kim, Tae-Il,Park, Beom-Young,Hwang, Do-Yon,Koh, Kyung-Chul,Kim, Cheon-Jei,Hwang, Kyu-Seok 한국축산식품학회 2012 한국축산식품학회지 Vol.32 No.5

한우의 근내지방도에 따른 도체등급 요인과 이화학특성 및 관능특성에 관한 기초자료를 도출하기 위하여 73,316두(2009년)의 도체와 271두(2005년-2009년)의 한우 등심을 분석하였다. 근내지방도가 1에서 9로 증가할수록 도체중, 배최장근단면적 및 등지방두께는 암소, 수소, 거세우에서, 직선적으로 증가하였다(p<0.05). 성숙도는 근내지방도가 증가할수록 암소와 거세우에서 증가하였고 평균 성숙도는 암소가 6.11로 가장 높았다. 이화학 특성 분석 결과 근내지방도의 증가에 따라 전단력은 8.58 kg에서 2.60 kg으로 직선적으로 감소하였으며(p<0.05) 보수력은 52.09%에서 58.66%로 증가하였고 명도는 34.08-41.97 범위로 증가되었다(p<0.05). 일반성분 분석결과 수분함량은 근내지방도 증가에 따라 73.62%에서 55.87%로 감소(p<0.05)하였으나 단백질함량은 유의적인 차이가 없었다. 조지방 함량은 근내지방도 증가에 따라 3.07%에서 26.70%로 직선적으로 증가(p<0.05)하였으며, 근내지방도 1에서 6까지 증가율은 비슷한 경향 이었으나 근내지방도 8 및 9의 조지방 함량은 각각 24.36% 및 26.70%로 근내지방도 7의 조지방 함량 18.69%에 비하여 크게 증가하였다. 관능특성은 근내지방도 증가에 따라 다즙성, 연도, 향미 및 전체 기호도는 증가하였으나(p<0.05) 근내지방도 8 및 9 그룹간 관능특성은 유의적인 차이가 없는 것으로 분석되었다. 한우 등심육의 근내지방도는 가열감량, 전단력 및 수분함량과 부(-)의 상관관계가 있었고 조지방함량, 보수력, L값 및 전체기호도 간에 정(+)의 상관관계가 있었다. The objective of this research was to investigate the effect of marbling scores on carcass grade factors, physico-chemical and sensory traits of Hanwoo. Data used in this study were collected from 73,316 carcasses obtained at the Nonghyup Seoul slaughterhouse in 2009 and 271 cuts of M. longissimusdorsi were analyzed to estimate beef qualities. As the marbling scores increased, backfat thickness was linearly increased (p<0.05) in cows (9.51 mm-14.69 mm) and steers (8.71 mm-14.23 mm). As the marbling scores increased, maturity of cows was increased and meat color, texture and quality grade improved for all genders. With increase of the marbling scores, crude fat contents (3.07%-26.70%), water holding capacity (52.09%-58.66%), $L^*$ value (34.08-41.97) were significantly increased (p<0.05) and Warner-Bratzler shear force was linearly decreased (p<0.05) from 8.58 kg to 2.60 kg. The increase of crude fat contents had the similar interval with the increase of marbling scores from 1 to 6 but it is sharply increased from marbling score 7. There was no difference observed on $pH_{24}$ (5.50-5.66), protein contents (19.57%-21.15%) among the marbling scores. Marbling score was significantly correlated with live weight (r=0.29) in cows, loineye area (r=0.35) in steer, and overall acceptability of panel scores (r=0.67) (p<0.01).