B. subtilis JM3 Pretense로 제조한 멸치액젓의 품질특성

박종혁,유상권,김영명,김동수,김상무,Park, J.H.,You, S.G.,Kim, Y.M.,Kim, D.S.,Kim, S.M. 한국식품영양과학회 2006 한국식품영양과학회지 Vol.35 No.5

본 연구는 멸치액젓의 풍미를 유지시키면서, 발효 속도를 향상시키기 위하여 숙성된 멸치액젓에서 단백분해능이 뛰어난 미생물이 생산하는 효소를 분리 정제한 다음 숙성초기의 멸치액젓에 첨가하여, 멸치액젓의 품질특성을 분석하였으며 그 결과는 다음과 같다. pH는 B. subtilis JM3 단백분해효소 첨가량 및 가수분해시간에 따른 변화는 없었고, 젖산량은 4% 단백분해효소 첨가구가 제일 높았다. 아미노질소, 휘발성염기질소 및 가수분해도는 단백분해효소 첨가구가 대조구에 비해 높았으며, 갈변도는 4% 효소첨가구에서 높게 측정되었다. 가수분해가 가장 높게 나타난 2시간째에 관능검사를 실시한 결과 단백분해효소 첨가구가 향 및 맛에서 좋은 평가를 얻었다. B. subtilis JM3 pretense from naturally fermented anchovy sauce was purified in $40{\sim}60%$ ammonium sulfate fraction. In order to accelerate the fermentation of anchovy sauce,2% and 4% of crude B. subtilis JM3 protease were added to 6 month-fermented anchovy sauces, respectively and then the various quality characteristics such as pH, lactic acid, amino-nitrogen, VBN, browning and hydrolysis degree, VBN, and sensory evaluation were analyzed at different storage times. pH was constant during storage time in all samples, whereas lactic acid contents of anchovy sauces hydrolyzed by 2% and 4% proteases were higher than that of control. The amino-nitrogen and volatile basic nitrogen contents of anchovy sauce with 2% and 4% proteases were twice higher than those of control. Anchovy sauces with 2% and 4% pretense increased the hydrolysis rate by 27% and 32%, respectively. Browning degree of anchovy sauce with 4% was higher than those of 2% and control. Anchovy sauce with 2% and 4% proteases was good in sensory evaluation of color, aroma, and taste attributes.

해조환(海藻丸)이 갑상선(甲狀腺) 기능항진증(機能亢進症)에서 항산화(抗酸化) 효과(效果)에 미치는 영향(影響)

박종혁,윤철호,서운교,강정준,서종은,신억섭,정지천,Park, Jong-Hyuck,Yoon, Cheol-Ho,Seo, Un-Kyo,Kang, Jeong-Jun,Seo, Jong-Eun,Shin, Uk-Seob,Jeong, Ji-Cheon 대한한방내과학회 2000 大韓韓方內科學會誌 Vol.21 No.3

This study was carried out to examine if Haejohwan (HJ) inhibits oxidant-induced lipid peroxidation and therby produces protective effect against thyroxine-induced hyperthyroid rats. Triiodothyronine $(T_3)$, thyroxine $(T_4)$, lipid peroxidation, xathine oxidase activities and type conversion ratio were increased in thyroxine treated group. However, they were decreased in HJ extract's pre-applied group. Glutathione level, activities of glutathione peroxidase, glutathione Stransferase and glutathione reductase were decreased in thyroxine treated group. But, they were increased in HJ extract's pre-applied group. These results suggest that in thyroxine-induced hyperthyroid rats HJhas an increase in the activities of oxygen free radical scavenging enzymes and inhibition of xanthine oxidase activities, and prevents lipid peroxidation.

항공기 도입과 관련된 항공기 인증제도에 대한 이해

박종혁,Park, Jong-Hyeok 한국항공우주산업진흥협회 2006 航空宇宙 Vol.91 No.-

어느 나라에서든지 항공기를 운용하려면 그 나라 항공당국의 관리와 감독을 받아야 한다. 이러한 관리와 감독은 공공의 안전을 위하여 국가기관인 항공당국에서 법적으로 위임받아 수행하는 것이다. 우리나라의 경우 건설교통부산하 항공안전본부와 지방항공청에서 그 기능을 담당한다. 이러한 관리와 감독은 주로 항공기, 항공종사자, 운항조직, 정비조직 등을 대상으로 이루어지며 등록, 제증명, 면허 등과 같은 증명활동, 감독활동, 위반 사항에 대한 법적 제재 등과 같은 수단을 통해 이루어진다. 따라서 항공기를 도입하여 운항하려는 자는 사업계획 단계에서부터 우리나라의 항공안전 관리감독과 관련된 제반 법규와 절차를 사전에 충분히 이해하고 대비하여야 시행착오를 줄이고 시간과 금전적인 손실을 예비할 수 있을 것이다. 여기에선 항공기에 국한하여 항공기 도입과 관련된 항공기 인증제도와 그에 따른 법절차에 대해 설명하고자 한다.

Ubi-Home에서의 지능적 멀티미디어 스트리밍을 지원하는 DRM 설계 및 구현

박종혁,이상진,홍인화,안태원,이덕규,Park Jong-Hyuk,Lee Sang-Jin,Hong In-Hwa,Ahn Tae-Won,Lee Deok-Gyu 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.3C

본 논문에서는 Ubi-Home에서의 지능적 멀티미디어 스트리밍을 지원하는 콘텐츠 보호 및 관리 시스템(UHSMS-DRM: Ubi-Home Smart Multimedia Streaming-Digital Right Management)을 설계 및 구현하였다. 제안 시스템은 Ubi-Home에서 디지털 콘텐츠의 저작권 보호 및 관리를 위한 유연한 유통 플랫폼을 제공하며, PC, STB, PDA, Portable device 등 다양한 디바이스의 인증을 통해 정당한 사용자에게 Multimedia Steaming Service를 제공한다. 그리고, 도메인 인증개념을 적용하여 Ubi-Home의 모든 디바이스에 대한 라이센스 관리의 효율성을 높인다. 또한, Ubi-Home에서 intelligent Service를 위해 사용자의 위치를 인지하기 위한 알고리즘을 제안 및 적용한다. In this paper, we design and implement the UHSNS-DRM(Ubi-Home Smart Multimedia Streaming-Digital Right Management) in Ubi-Home. The proposed system support flexible distribution platform for digital content copyright protection and management in Ubi-Home. This system also can provide multimedia streaming service to authorized users who are using PC, STB, PDA, and Portable Device, etc. Furthermore, we adopt concept of domain authentication and it help to improve the efficiency of license management for all devices in Ubi-Home. We design user's location recognition algorithm in order to provide intelligent services. Of course, this algorithm is applied for the proposed system. Start after striking space key 2 times.

활성이온식각법에 의한 Y-Ba-Cu-O고온초전도 박막의 미세선 제작

박종혁,한택상,김영환,최상삼,Park, Jong-Hyeok,Han, Taek-Sang,Kim, Yeong-Hwan,Choe, Sang-Sam 한국재료학회 1993 한국재료학회지 Vol.3 No.2

In situ on-axis rf magnetron sputtering 방법으로 $Y_1$B$a_2$C${u_4}\;{_2O_x}$의 비화학 양론적인 타게트를 사용하여 $T_c$, $_{zero}$/-88.2K, ${\Delta}{T_c}$, <1.5K의 고온초전도 박막을 제조하고, 활성이온식각법으로 이 박막을 patterning하여 그 특성을 조사하였다. 제조된 패턴은 깨끗한 경계면을 가지고 있음이 관찰되었으며, 패턴 폭이 5${\mu}$m에서 2${\mu}$m로 좁아짐에 따라 임계온도와 임계전류밀도의 특성저하가 나타났으나, 그 저하폭이 크지 않아 소자로서 응용하기에 충분한 특성을 가지고 있음을 확인하였다. 한편 RIE방법에 의하여 미크론 이하의 선폭 제조가능성을 확인하였다. Abstract We have fabricated Y-Ba-Cu-O superconducting thin films by in-situ on-axis rf magnetron sputtering method using $Y_1$B$a_2$C${u_4}\;{_2O_x}$ nonstoichiometric target. Reactive ion etching (RIE) method was used in patterning the films. We have investigated the properties of patterned films, and compared the properties of the films before and after patterning. As the line width of the pattern decreases from 5${\mu}$m to 2${\mu}$m, a slight but not significant degradation in superconducting properties of the patterned films is observed. The bridge patterns are found to have clean edges and good electrical properties enough to be applied in device applications. From the result of this research, the possibility of submicron patterning by RlE is confirmed.

전방십자인대 재건술 후 스포츠 활동 복귀

박종혁,이준모,배현경,임종한,이주홍,Park, Jong-Hyuk,Lee, Jun-Mo,Bae, Hyun-Kyung,Im, Jong-Han,Lee, Ju-Hong 대한정형외과스포츠의학회 2009 대한정형외과스포츠의학회지 Vol.8 No.2

목적: 전방 십자 인대 재건술을 시행한 환자에서 수상 전 스포츠 활동으로의 복귀 정도와 관여 인자를 알아보았다. 대상 및 방법: 2003년 9월부터 단일 다발 전방십자인대 재건술을 시행받은 109명의 환자 중 스포츠 손상으로 2년 이상 추시 가능한 43예를 대상으로 수상 전 스포츠 활동으로의 복귀 여부를 조사하였다. 평균 나이는 26세(17~45세)였고, 추시 기간은 평균 31.2 개월(24~53개월)이었다. 수술 전과 최종 추시에서의 임상적 결과는 Lysholm 점수, Tegner 활동 수준 척도, 객관적 및 주관적 International Knee Documentation Committee questionnaires (IKDC 평가표), KT-1000 관절계를 이용하여 평가하였다. 결과: 임상적 결과는 술 전에 비해 최종 추시에서 모두 유의하게 호전되었다(P<0.001). 43예 중 25예(58%)는 수상 전 운동으로 복귀하였으나 18예(42%)는 복귀에 실패하였다. 복귀에 실패한 환자에서 11예(61%)는 재부상에 대한 두려움, 나머지 7예(39%)는 불안정과 통증을 이유로 복귀하지 못하였다. ANOVA test상 세 환자 군의 Lysholm 점수, 주관적 IKDC 평가표, 및 KT-1000 검사에서 통계적으로 유의하였다(P<0.001). 그러나 수상 전 스포츠 활동으로 복귀한 군과 재부상에 대한 두려움 때문에 복귀하지 못한 두 군에서는 Lysholm점수와 KT-1000 검사 상 유의한 차이가 없음에도 불구하고 Tegner 활동 수준, 주관적 IKDC 평가표에서 유의한 차이를 보였다(P<0.001). 결론: 스포츠 손상으로 전방십자인대 재건술을 받은 환자들 중 약 25%에서 재손상에 대한 두려움으로 인해 수상 전 스포츠 활동으로 복귀하지 못했다. 전방십자인대 재건술의 성공적인 결과를 위해서는 재건술 술기 향상과 체계적인 재활 방법이 여전히 요구되지만 심리적인 요인에 대한 고려 역시 필요할 것으로 생각된다. Purpose: The purpose of this study was to determine how many of our patients who had had anterior cruciate ligament (ACL) reconstruction returned to their previous levels of sports and to identify why not doing so. Material and Methods: We evaluated 43 knees with a minimum of two years follow-up among whom undergoing 109 ACL reconstruction from September 2003. The mean age of patients was 26 years (17 to 45 years) Clinical results was evaluated according to the Lysholm Knee scores, Tegner activity score, subjective IKDC questionnaires, objective IKDC evaluation form and KT-1000 arthrometer. Results: The overall clinical results demonstrated significant improvement at the final follow-up comparing to preoperative data (P<0.05). Among 43 patients, 25 patients (58%) returned to their previous level of sports and 18 patients (42%) did not. Of whom, 11 patients (61%) were not able to return to sports due to fear to re-injury and 7 patients (39%) suffered from instability and pain. The differences in the Lysholm Scores, KT-1000 arthrometer and subjective IKDC in the 3 groups of patients by ANOVA test were found to be statistically significant (P<0.001). Although there is no difference in objective IKDC and KT-1000 arthrometer, the difference was observed in Tegner activities, subjective IKDC obtained by those who returned to sport and those who had fear to reinjury (P<0.001). Conclusion: This study showed that a quater of patients could not return to their previous level of sport after ACL reconstruction because of fear to reinjury. We thought that not only improving the technique of ACL reconstruction and systemic rehabilitation but also considering psychological factor of patients could allow more patients to return to the previous level of sports.

시공공정 효율화를 위한 시뮬레이션 수식모형 구축에 관한 연구

박종혁,전용배,Park, Jong-Hyuk,Jeon, Yong-Bae 한국건설관리학회 2007 건설관리 : 한국건설관리학회 학회지 Vol.8 No.1

If construction process operate composing work team by judgment manager's experience, possibility that progress of construction process becomes as inefficient is much. But, If produce optimal proposal of resources allocation, construction cost and duration through simulation at work plan step, work schedule because do quantification efficient operate do on. When plan construction process in this research, resources allocation by change of work team operation change, resources cost loss, total cost, optimal proposal of construction duration tentative plan of numerical formula model that can do simulation propose. Apply and revealed to apartment house framework which horizontal work area of process and vertical work area are composed as is each different construction process to verify proposed numerical formula model. Achieved efficiency than work team's operation results which apply numerical formula model that is presented in this research and enforce simulation is applied in actuality example construction. 건설공사의 시공공정을 관리자의 경험적 판단에 의하여 작업팀을 구성하여 운영하면, 시공공정의 진행이 비효율적으로 될 가능성이 많다. 그러나 시공계획단계에서 모의조작을 통하여 자원할당, 공사비, 공사기간의 최적 안을 산출하면 시공공정을 정량화하여 효율적인 운영을 할 수 있다. 본 연구에서는 시공공정을 계획할 때 작업팀 운영의 변화에 따른 자원할당 변동치, 자원 손실비, 총공사비, 공사기간의 최적 안을 모의조작 할 수 있는 수식모형의 시안 식을 제안하였다. 제안된 수식모형을 검증하기 위하여 시공공정의 수평작업역과 수직작업 역이 각각 상이하게 구성된 공동주택 골조공사에 적용하여 시현하였다. 본 연구에서 제시된 수식모형을 적용하여 모의 조작을 실시한 결과가 실제 사례공사에서 적용된 작업팀의 운영실적보다 효율화를 달성하였다.

편평 사마귀에 대한 DNCB와 DPCP 면역요법의 치료 효과에 대한 비교 연구

박종혁,김성진,이승철,원영호,전인기 ( Jong Hyuk Park,Seong Jin Kim,Seung Chul Lee,Young Ho Won,Inn Ki Chun ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.6

This stuc1y was conducted to evaluate the therapeutic effect of immunotherapy on verruca plana. Forty-four patients with verruca plana were tried with dinitrochlorobenzene(DNCB) and diphenylcyclopropenone(DPCP) by topical application on the norinal uninvolved skin of the inner arms for sensitization and challenge. The lesions were challenged in weekly intervals after sensitization. The results obtained in this study are as follows. 1. Mean age of our patients was 20-year-old and sex ratio was about 1:2 (14 of male, 30 of female). 2. Tbe sites of the lesion weve face (60.9%), neck (7.2%), trunk (2.9%), arm (li3.0%), hand (11.6% ), leg (4.3% ). 3. Thirty two patients (72.7%) from 44 cases were completely cured after DNCB (81.3%) and DPCP (67%) treatment and iesions on younger patients showed a better response than those of of older patients(p<0.05). 4. There were no statistic relationship between duration of the lesions and therapeutic response. 5. Average challenge number after sensitization was 3.77 in DNCB, 2.26 in DPCP, respectively. 6. Sensitization rates in the cured patients were to treat verruca plana 94.7% (18/19) in DNCB, 76.9% (10/13) in DPCP, respectively. (Korean J Dermatol 1997;35(6): 1082-1087)

외안근에 발생한 고립형 근농양 1예

박종혁,전루민,Jong Hyuk Park,Roo Min Jun 대한안과학회 2014 대한안과학회지 Vol.55 No.4

Purpose: To report the case of an isolated abscess in an extraocular muscle. Case summary: We report a case of an isolated abscess in an extraocular muscle in a patient who was treated with systemic chemotherapy for precursor B lymphoblastic leukemia. A 54-year-old female who had undergone systemic chemotherapy for precursor B lymphoblastic leukemia presented with right ocular pain and limited eye movements. On ophthalmic examination, she had elevated intraocular pressure (IOP) and limited upward and downward gaze. MRI (magnetic resonance imaging) examination revealed an isolated abscess in right inferior rectus muscle. Although the patient was treated with empirical intravenous antibiotics and IOP-lowering agents, the size of the abscess increased, as confirmed by MRI findings. Therefore, we performed a pus drainage procedure by the transconjunctival approach. We were not able to find any residual abscess lesions on CT scans 3 months postoperatively. The patient's ocular pain disappeared and the limited eye movements improved significantly 6 months postoperatively. Conclusions: There have been no case reports of an isolated abscess in an extraocular muscle in Korea. For immunocompromised patients unresponsive to systemic empirical antibiotic treatment, an early pus drainage procedure by the transconjunctival approach may be a useful and effective therapeutic method in the management of an idiopathic isolated abscess in an extraocular muscle. J Korean Ophthalmol Soc 2014;55(4):616-622

고분자 전해질 연료전지 및 수전해용 촉매층의 이오노머 바인더

박종혁,마하무다아크테르,김범석,정다혜,이민영,신지윤,박진수,Park, Jong-Hyeok,Akter, Mahamuda,Kim, Beom-Seok,Jeong, Dahye,Lee, Minyoung,Shin, Jiyun,Park, Jin-Soo 한국전기화학회 2022 한국전기화학회지 Vol.25 No.4

Polymer electrolyte fuel cells and water electrolysis are attracting attention in terms of high energy density and high purity hydrogen production. The catalyst layer for the polymer electrolyte fuel cell and water electrolysis is a porous electrode composed of a precious metal-based electrocatalyst and an ionomer binder. Among them, the ionomer binder plays an important role in the formation of a three-dimensional network for ion conduction in the catalyst layer and the formation of pores for the movement of materials required or generated for the electrode reaction. In terms of the use of commercial perfluorinated ionomers, the content of the ionomer, the physical properties of the ionomer, and the type of the dispersing solvent system greatly determine the performance and durability of the catalyst layer. Until now, many studies have been reported on the method of using an ionomer for the catalyst layer for polymer electrolyte fuel cells. This review summarizes the research results on the use of ionomer binders in the fuel cell aspect reported so far, and aims to provide useful information for the research on the ionomer binder for the catalyst layer, which is one of the key elements of polymer electrolyte water electrolysis to accelerate the hydrogen economy era.