숙성온도와 기간이 한우 거세우 배최장근의 육질 특성에 미치는 영향

김진형,조수현,성필남,하경희,김학균,박범영,이종문,김동훈,안종남,Kim, Jin-Hyoung,Cho, Soo-Hyun,Seong, Pil-Nam,Hah, Kyung-Hee,Kim, Hak-Kyun,Park, Beom-Young,Lee, Jong-Moon,Kim, Dong-Hun,Ahn, Chong-Nam 한국축산식품학회 2007 한국축산식품학회지 Vol.27 No.2

본 연구는 숙성온도와 숙성기간이 한우 거세우 배최장근의 육질 특성에 미치는 영향을 구명하고자 숙성온도를 0, $4^{\circ}C$로 하여 2, 7, 14, 21, 28, 49일 동안 숙성하면서 한우 거세우 배최장근의 pH, 전단력, MFI, 가열 및 육즙감량, 전자현미경 관찰, 관능검사 및 아미노산 조성을 분석하였다. pH는 숙성온도가 $0^{\circ}C$일 때 숙성 21일까지, 숙성온도가 $4^{\circ}C$일 때 숙성 14일까지 증가하다가 감소하였다(p<0.05). 전단력 값은 숙성 14일부터 28일까지 $4^{\circ}C$에서 숙성한 배최장근이 $4^{\circ}C$보다 유의적으로 낮았고, 숙성기간이 경과함에 따라 유의적으로 연도가 향상되었다(p<0.05). MFI의 경우 $4^{\circ}C$에서 숙성한 배최장근 보다 $0^{\circ}C$에서 높은 경향을 보였고, 숙성기간이 경과함에 따라 유의적으로 증가하였다(p<0.05). $0^{\circ}C$에서 숙성한 배최장근의 가열 및 육즙감량이 $4^{\circ}C$보다 적은 경향이었고, 숙성기간이 경과함에 따라 유의적으로 증가하였다(p<0.05). 관능검사에서 연도와 다즙성은 $0^{\circ}C$에서 숙성한 배최장근이 $4^{\circ}C$ 보다 좋은 평가를 보였고, 숙성기간이 경과하면서 유의적으로 높은 평가를 얻었다(p<0.05). 전자현미경에 의한 미세구조 변화는 $4^{\circ}C$에서 숙성한 배최장근이 $0^{\circ}C$보다 1주일 빠르게 Z-disk의 붕괴가 확실하게 관찰되었고, 숙성기간이 경과하면서 Z-disk의 붕괴정도가 많아졌다. 아미노산 함량 변화는 $4^{\circ}C$에서 숙성한 배최장근이 $0^{\circ}C$보다 높은 경향이었고, 숙성기간이 경과하면서 각 아미노산 조성의 함량이 유의적으로 증가하였다(p<0.05). 이상의 결과를 종합하면, 한우 거세우 등심의 최적 숙성 조건은 $0^{\circ}C$에서는 14일간, $4^{\circ}C$에서는 7일간 숙성하는 것이 바람직한 것으로 사료되며, 향후 숙성기술의 산업적 적용을 위하여 한우의 부위 및 근육별 적정 숙성기간 설정 연구가 필요할 것으로 생각된다. This study was conducted to investigate the effect of ageing temperature(0 and $4^{\circ}C$) and time(2, 7, 14, 21, 28, and 49 days) on the meat quality of longissimus muscle from Hanwoo steer. The pH, Warner-Bratzler shear force(WBSF), myofibrillar fragmentation index(MFI), cooking and purge loss, sensory, morphological changes, and amino acid composition were assessed. The pH of longissimus muscle increased significantly(p<0.05) for 21 days at $0^{\circ}C$ and 14 days at $4^{\circ}C$, but decreased thereafter. Longissimus muscle aged from 14 days to 28 days at $4^{\circ}C$ had a lower WBSF than longissimus muscle aged at $0^{\circ}C$(p<0.05). The WBSF of longissimus muscle decreased significantly(p<0.05) with ageing time. The MFI, cooking and purge loss, tenderness, and juiciness scores were higher for longissimus muscle aged at $4^{\circ}C$ than at $0^{\circ}C$. As ageing time increased, the MFI, cooking and purge loss, tenderness, juiciness, and amino acid composition of longissimus muscle increased significantly(p<0.05) with ageing at 0 or $4^{\circ}C$. Transmission electron microscopy showed Z-disk degradation and morphological changes of the myofibrils correlating with increased tenderness during the ageing time. Based on these results, the proper ageing conditions of longissimus muscle of Hanwoo steer were 14 days of ageing at $0^{\circ}C$ or 7 days of ageing at $4^{\circ}C$. However, further study on the application of ageing technology to this industry is necessary for the optimization of ageing conditions for the sub-primals or muscles from Hanwoo beef.

전안부 빛간섭단층촬영기를 이용한 백내장 절개창의 크기에 따른 창상치유과정의 형태학적 관찰

김진형,김태임,김응권,이형근,Jin Hyung Kim,Tae Im Kim,Eung Kweon Kim,Hyung Keun Lee 대한안과학회 2013 대한안과학회지 Vol.54 No.6

Purpose: To investigate wound characteristics and ultrastructural changes in the 2.2-mm and 2.8-mm main corneal incisions. Methods: Forty-four eyes of 34 patients undergoing cataract surgery were randomized to receive a 2.2-mm or 2.8-mm main corneal incision. All incisions were evaluated 1, 7, and 30 days postoperatively using anterior segment optical coherence tomography. The angle, length, maximal thickness of the incision, and if present, corneal gap length and incision gap area were calculated. The existence of Descemet’s membrane detachment was recorded. Results: The mean endothelial gap length and gap area of the 2.2-mm wound were larger than the 2.8-mm, with the only statistically significant difference observed on postoperative day 30 (p = 0.015 and 0.027, respectively). There was no difference in the mean incision angle, length, and corneal thickness between the 2 incision sizes. The ratio of Descemet’s membrane detachment increased with older age and low postoperative IOP, but not associated with incision size (p < 0.05). Conclusions: Both the 2.2-mm and 2.8-mm main corneal incisions showed excellent wound healing outcome without significant postoperative complications. Older patients with low postoperative IOP required a more careful wound care management. The incision parameters in the present study can be used as an indicator of the healing process to reduce wound-related complications.

MR Imaging Findings of Patellar Tendon after Anterior Cruciate Ligament Reconstruction with Bone-Tendon-Bone Autograft

김진형,김형석,김형래,김백현,설혜영,차인호,이창희,임홍철,Kim, Jin-Hyeong,Kim, Hyeong-Seok,Kim, Hyeong-Rae,Kim, Baek-Hyeon,Seol, Hye-Yeong,Cha, In-Ho,Lee, Chang-Hui,Im, Hong-Cheol The Korean Radiological Society 2002 대한영상의학회지 Vol.46 No.1

Purpose: To evaluate the postoperative changes occurring in the patellar tendon after reconstruction of the anterior cruciate ligament (ACL) using the central one-third of the patellar tendon together with patellar and tibial bony plugs. Materials and Methods: Ten patients with ACL injury underwent sagittal and coronal T1- weighted MR imaging of both postoperative and normal knee joints. In all cases, reconstruction of the ACL was performed using the central one-third of the patellar tendon, together with patellar and tibial bony plugs. During the follow-up period of 6-27 months, patient were clinically stable. We compared the length, signal intensity and contour of both patellar tendons, as seen on MR images. Results: No defects was found in harvested patellar tendons, and MR images showed high signal intensity within harvested tendons in six of the ten patients. In seven of ten, patellar tendons had irregular margins and were poorly delineated from adjacent tissue. The mean length of patellar tendons was 44.2${\pm}$2.9 mm in normal knee and 43.9${\pm}$3.1 mm in postoperative knee, while their mean thickness in postoperative knee, measured at mid-portion, averaged 4.3${\pm}$1.2 mm. There were no statistically significant differences (p>0.05). The greatest mean thickness of patellar tendon was 6.9${\pm}$1.2 mm and 4.3${\pm}$0.5 mm in normal and postoperative knee, respectively. Thus, on average, postoperative patellar tendon was 161% thicker than normal tendon (p<0.05). Conclusion: In clinically stable patients, patellar tendons after graft harvesting had a higher signal intensity, worse-defined margins and a greater thickness than normal. We suggest that these are the normal postoperative findings. 목적: 중앙부 슬개건 이식편을 이용한 외상성 전방십자인대 파열 복구 수술 후 슬관절 자기공명영상을 이용하여 수술한 슬개건과 정상 슬개건의 소견을 비교하여 보았다. 대상과 방법: 외상성 전방십자인대 파열 소견을 보인 10명에서 슬개건의 중앙부분에서 이식편을 얻어 전방십자인대 복구 수술을 시행한 환자들을 중 임상적으로 증상을 보이지 않았던 10명의 환자들을 대상으로 하였으며, 수술 후 6-27개월(평균 16.7개월)후 반대편 정상 슬관절과 같이 양쪽 슬관절에서 자기공명영상을 시행하였다. 자기공명영상은 시 상면과 관상면상으로 시행하였고,슬개건의 길이, 중앙부와 가장 두꺼운 부위에서의 두께 및 신호강도를 측정하여 양쪽 슬관절을 서로 비교하였다. 결과: 수술한 슬관절에서 슬개건 내에 국소적인 고신호 강도가 6명(60%)에서 보였으며, 7명(70%)에서는 슬개건의 경계가 불분명하였다.길이는 건측 슬개건에서는 44.2 mm ${\pm}$2.9 mm이었고, 수술한 슬개건에서는 43.9 mm ${\pm}$3.1 mm이었다. 중앙부위에서의 두께는 양측에서 통계학적으로 유의한 차이를 발견할 수 없었다(p>0.05).가장 두꺼운 부분에서의 두께는 건측이 4.3 mm ${\pm}$0.5 mm이고 수술한 쪽의 슬개건은 6.9 mm ${\pm}$1.2 mm로 측정되어 통계학적으로 유의하게 수술한 쪽의 슬개건이 건측 슬개건보다 두꺼웠다(161%). 결론: 슬개건을 이용하여 전방십자인대 복구 수술을 받은 환자에서 시행한 슬관절 자기 공명영상에서 이식편을 얻은 슬개건은 정상 슬개건과 비교하여 경계가 불분명하며, 국소적인 고신호강도를 보이고,두께가 두껍게 보였고, 이는 정상수술 후 자기공명영상 소견으로 생각된다.

동부 Diallel Cross$ F_2$세대의 유전분석에 관한 연구

김진형,고미석,장권열,Kim, J.H.,Ko, M.S.,Chang, K.Y. 한국작물학회 1983 한국작물학회지 Vol.28 No.2

신 두과작물 증산의 중요성에 비추어 동부의 육종상 기초자료를 얻고자, 품종중 특성이 뚜렷한 6개품종을 2면교잡하여 교배친 6개품종과 $F_2$세대 15개 조합을 재료로 각 형질에 관여하는 유전자의 분포상태 및 우성정도 그리고 조합능력 등을 추정한 바, 그 결과를 요약하면 다음과 같다. 1. Vr-Wr Graph에서 개화일수, 분지수, 협장, 주당협장, 주당립수, 백립중 및 구당립중의 7개형질은 불완전우성이었고, 성숙일수, 생육일수, 절간장 및 협당립수는 초우성으로 각각 나타났으나 경직경은 완전우성에 가까운 불완전우성이었다. 2. 각 형질의 우성정도를 본바, 개화일수, 성숙일수, 생육일수, 절간장, 주당협수, 협당립수, 주당립수, 구당립중의 8개형질은 그 값이 1이상이었고, 그 중 개화일수, 생육일수, 주당협수, 주당립수, 구당립중의 5개형질에 관여하는 유전자에서는 D < H로서 우성효과가 더 큰 것으로 추정되었다. 또한 평균우성정도는 성숙일수, 분기수, 주당립수의 형질들이 부의 값을 보여 타 형질과는 다른 경향이었으며, 우성열성유전자평균빈도는 성숙일수, 절간장, 분기수, 협당립수에서 비교적 낮은 값을 나타내었다. 3. 일반조합능력(GCA)과 특정조합능력(SCA)을 검정한 바, 전 형질에서 일반조합능력의 값이 특정조합능력 보다 컸으며, 그중 구당립중이 일반조합능력과 특정조합능력에서 가장 높았다. 4. 조합능력의 효과에서, 일반조합능력의 효과는 J78이 개화일수, 생육일수, 주당협수, 주당립수, 구당립중의 5개형질에서 높게 나타났으며, 특정조합능력의 효과는 대체로 조합과 형질에 따라서 상이하였으나 TVu 1857$\times$TVu 2885, TVu 2702$\times$J78의 조합에서 그 효과가 크게 평가되었다.dica${\times}$Japonica 품종들은 $17/9^{\circ}C$에서만 고사되고 $20/12^{\circ}C$에서는 초기등숙이 정체되었다가 2주일후부터 등숙이 서서히 시작되었다. 7. 온도조건에 따른 복백미의 형성은 최적온도$(26/18^{\circ}C)$로부터 최저나 최고조건에서 많았고 사미 및 적미도 같은 경향으로 나타났다. 8. 현미립의 길이 및 두께 폭에 대한 영향을 보면 저온조건$(17/9^{\circ}C\;20/12^{\circ}C)$에서 짧거나, 얇고, 좁은 편이었다. 9. 온도별 립중분포의 빈도를 보면 IR36은 최고온도조건이나 $(32/24^{\circ}C)$ 최저온도$(23/13^{\circ}C)$에서 동일한 립중분포를 보였고 최적온도조건에서는 $(26/18^{\circ}C$ 높은 립중분포를 보였고 진흥은 최고, 최저, 최적온도 순으로 립중증가의 빈도를 보였으며 Indica${\times}$Japonica 품종들은 진흥과 IR36품종의 중간 영역에 머물고 있었다.mite처리구가 8.6%, 유황첨가구가 5.7~7.4% 증수되었음을 보이었다. 7. 식물체중의 조단백질 함량은 대조구, 5%, 10% 유황첨가구가 3.31~3.50%로서 비슷하였고 15% 유황첨가구는 3.94%, Dolomite첨가구는 5.38%였다. 아미노산도 15%유황첨가구와 Dolomite첨가구가 많이 함유되어 있었다. 현미중 조단백질은 15%유황첨가구가 10.14%로서 최고이었으며 10%유황첨가구와 Dolomite첨가구는 9.85%로서 다음이었다. 아미노산도 대조구의 현미에는 유황처리구보다 작았으며 유황처리구에서는

경천사10층석탑 오염물 제거 방안 연구-레이저를 이용한 오염물의 제거 방안 중심으로

김진형,김사덕,강대일,청목번부,Kim, Jin-Hyung,Kim, Sa-Dug,Kang, Dai-Ill,Aoki Shigeo 국립문화재연구소 2002 保存科學硏究 Vol.23 No.-

It has been proved that pollutants stuck on the surface of stone architecture have significant direct and indirect harmful effects on them. Among them some do not look evidently harmful, but they have potentials to ruin stone architecture as time goes on. Since the cultural assets have magnificent meanings as historical aspects, their future states should be considered seriously as well as that of the presence. The past method to get rid of the pollutants from the surface of cultural properties has been changed a lot till the present along with scientific development of technology on this field. Existing method to eliminating pollutants are based on physical and chemical processing, which can make damages on them too. Recently cleansing using LASER has been developed in Europe and proved as effective and relatively less harmful to remove pollutants, and it has been adopted widely. After the success of the way by LASER, there are several trials to adopt the way to our cultural properties which have similar materials. Those showed satisfactory results and studies for developing the securer and more dependable ways to apply. From now on the report will show the effective ways to apply the method using LASER on to the similar materials and different materials as well and discuss about the pros and cons about the method.

필리핀 포장산업의 최신 동향

김진형,Kim, Jin-Hyeong (사)한국포장협회 2021 包裝界 Vol.343 No.-

국내 콘택트렌즈 관련 합병증 양상에 대한 설문 조사: 한국콘택트렌즈학회

김진형,송종석,현준영,정성근,김태진,Jin Hyoung Kim,Jong Suk Song,Joon Young Hyon,Sung Kun Chung,Tae Jin Kim 대한안과학회 2014 대한안과학회지 Vol.55 No.1

Purpose: To investigate the epidemiology of contact lens (CL)-related complications in Korea. Methods: A questionnaire regarding CL-related complications including patient’s gender, age, causative factors, and signs and symptoms was distributed to members of the Korean Ophthalmological Society by The Korean Contact Lens Study Society and the results of the questionnaire analyzed. Results: Responses to the questionnaire written by ophthalmologists from 22 institutes and clinics were collected from 499 subjects over a 20-month period starting in October 2008 and analyzed. The mean age of respondents was 22.9 years and the male-to-female ratio was 1:8.1. The soft CL and cosmetic colored lens comprised the majority (46.6% and 42.1%, respectively) of the reported cases, followed by the rigid gas permeable lens (RGP lens; 10.6%) and orthokeratology lens (0.8%). In subjects using a cosmetic colored lens, 62.2% showed emmetropia and 89.1% of the lenses were prescribed by opticians. The main complications included corneal erosion, sterile corneal infiltrate, allergic disease, conjunctival injection, corneal ulcer, and dry eye syndrome. The most common causative factor of complications was excessive lens wear. Comparing main causative factors according to the RGP lens prescriber, the most common factor was poor lens fit. Conclusions: The number of cosmetic colored lens-related complications in the emmetropic eyes of young patients is increasing rapidly. Considering opticians are the main CL prescribers in CL-related complications, Korean ophthalmologists need to pay more attention to CL fitting and constant education of patients regarding proper CL wear and care. J Korean Ophthalmol Soc 2014;55(1):20-31

한우 성숙도와 추출횟수가 사골용출액의 관능 특성에 미치는 영향

김진형,조수현,성필남,하경희,윤영탁,임동균,박범영,이종문,김동훈,안종남,Kim, Jin-Hyoung,Cho, Soo-Hyun,Seong, Pil-Nam,Hah, Kyung-Hee,Yun, Yeong-Tak,Lim, Dong-Gyun,Park, Beom-Young,Lee, Jong-Moon,Kim, Dong-Hun,Ahn, Chong-Nam 한국축산식품학회 2008 한국축산식품학회지 Vol.28 No.1

This study was conducted to investigate the effect of different maturity scores [2 (bull), 2 (steer), 3-9 (cow)] and the number of extractions on water extract from Hanwoo shank bones (arm, fore shank, round and hind shank) with regard to sensory traits (white color, aroma, taste, overall acceptability). The white color of water extract from Hanwoo shank bones of maturity score 2 (bull and steer) was lighter than with maturity scores of 3-9 (cow) (p<0.05). The aroma of water extract from Hanwoo shank bones of maturity score 2 (bull and steer) was stronger than with other maturity scores 3-9 (cow) except for maturity score 5 (p<0.05). The taste and overall acceptability of water extract from Hanwoo shank bones of maturity score 2 (bull and steer) were higher than with maturity scores of 3-9 (cow) (p<0.05). The white color, aroma, taste and overall acceptability of water extract from Hanwoo shank bones of all maturity scores significantly decreased as the number of extractions (from 2nd to 4th) increased (p<0.05). In conclusion, there were significant differences between maturity scores 2 and maturity scores 3-9 (cow) with regard to sensory traits. Further studies need to address whether different maturity scores affect the price of shank bones in the meat industry.

Intensivists' Direct Management without Residents May Improve the Survival Rate Compared to High-Intensity Intensivist Staffing in Academic Intensive Care Units: Retrospective and Crossover Study Design

김진형,Jihye Kim,SooHyun Bae,Taehoon Lee, M.D.,Jong Joon Ahn, M.D.,Byung Ju Kang 대한의학회 2020 Journal of Korean medical science Vol.35 No.3

Background: Medical staff members are concentrated in the intensive care unit (ICU), and medical residents are essentially needed to operate the ICU. However, the recent trend has been to restrict resident working hours. This restriction may lead to a shortage of ICU staff, and there is a chance that regional academic hospitals will face running ICUs without residents in the near future. Methods: We performed a retrospective observational study (intensivist crossover design) of medical patients who were transferred to two ICUs from general wards between September 2017 and February 2019 at one academic hospital. We compared the ICU outcomes according to the ICU type (ICU with resident management under high-intensity intensivist staffing vs. ICU with direct management by intensivists without residents). Results: Of 314 enrolled patients, 70 were primarily managed by residents, and 244 were directly managed by intensivists. The latter patients showed better ICU mortality (29.9% vs. 42.9%, P = 0.042), lower cardiopulmonary resuscitation (CPR) (10.2% vs. 21.4%, P = 0.013), lower continuous renal replacement therapy (CRRT) (24.2% vs. 40.0%, P = 0.009), and more advanced care planning decisions before death (87.3% vs. 66.7%, P = 0.013) than the former patients. The better ICU mortality (hazard ratio, 1.641; P = 0.035), lower CPR (odds ratio [OR], 2.891; P = 0.009), lower CRRT (OR, 2.602; P = 0.005), and more advanced care planning decisions before death (OR, 4.978; P = 0.007) were also associated with intensivist direct management in the multivariate cox and logistic regression analysis. Conclusion: Intensivist direct management might be associated with better ICU outcomes than resident management under the supervision of an intensivist. Further large-scale prospective randomized trials are required to draw a definitive conclusion.

닭고기 품질향상 방안 - 사료 영양관리

김진형,Kim, Jin-Hyeong 한국육계협회 2012 월간 닭고기 Vol.18 No.9