측두하와에 발생한 법랑모세포종 1예

김강현(Kang Hyeon Kim),이상민(Sang Min Lee),백소야(Soya Paik),박영민(Young Min Park) 대한두경부종양학회 2015 대한두경부 종양학회지 Vol.31 No.2

Ameloblastoma is the most common benign odontogenic tumor, with approximately 80% arising in the mandible and the remainder in the maxilla. However, the infratemporal fossa is a rare site in which ameloblastomas occur. Although malignant transformations or metastasizing processes are extremely rare, tumor recurrence is common, if the tumor is not completely resected. Because reoperation could deteriorate quality of life in the patients and increase surgical morbidity, radical surgery is often recommended to minimize recurrence rates. In this report, we presented our experience of resection of ameloblastoma in the left infratemporal fossa with sufficient safe margin through a lower cheek flap approach and marginal mandibulectomy.

교육시설의 열원방식에 따른 경제성 분석

김강현(Kang Hyeon Kim),예창배(Cgabg Bae Ye),박종일(Jong Il Park) 대한설비공학회 2018 대한설비공학회 학술발표대회논문집 Vol.2018 No.6

All efforts are underway to reduce energy consumption globally. Despite these effort, the educational field are showing the tendency of increasing their energy consumption every each year. For that reason, this thesis is going to scrutinize an economic feasibility of university heating systems through the LCC. For the economic analysis of education facilities, we has chosen several representative conditions. First, we has chosen D-university in Busan as a model building. Second, for the practical comparison, three types of heat source system has be selected which was the Absorption Chiller System, the Electric Engine Driven Heat Pump and the Gas Engine Driven Heat Pump. LCC analysis was performed in terms of initial investment, operating and maintenance costs. The initial investment cost was favorable to EHP. Gas Engine Driven Heat Pump was advantageous in terms of operating costs. Maintenance costs were advantageous for Electric Engine Driven Heat Pump. In the overall LCC results, Electric Engine Driven Heat Pump is economically viable in educational facilities.

지속가능한 순환형 모듈러 시스템의 재건축 공동주택 적용성 연구

김강현(Kim, Kang-Hyeon),조승구(Jo, Seung-Gu) 대한건축학회 2017 대한건축학회 학술발표대회 논문집 Vol.37 No.2

In these days, the reconstruction has happened, ignoring the past memories. This occured the urban confusion and the problem what we are facing. This research is aim to resolve the problem about local people’s low sttlement because of the reconstruction and give solutions, involving the past memories and vestiges. This research concentrates the problems about the urban reconstruction and the systems how the local people can be protected. In this step, to solve the problems of the reconstruction, the research studies the architecture modules, multi-unit dwellings and circular systems.

거대 두개저 종양 절제술에 대한 단일 기관 수술 결과

김강현(Kang Hyeon Kim),이상민(Sang Min Lee),김한규(Han Kyu Kim),홍제범(Je Beom Hong),박세라(Sera Park) 대한두개저학회 2015 대한두개저학회지 Vol.10 No.2

Objectives : Giant tumors of the skull base are extremely rare. Therefore, no single center treats enough patients to accumulate significant numbers for meaningful analysis of outcomes after tumor resection. We report our experience of thirteen patients who had received surgical treatment successfully. Materials and Methods : Surgical approach is selectively perfomed based on the location of the tumor and surrounding anatomical structure. Twelve patients underwent extended translabyrinthectomy with combined anterior and posterior petrosectomy(ETLAPP) and one patient had received subtotal petrosectomy(SP). Tumor resection was achieved in all patients. Two patients underwent gross total removal(GTR) and eleven patients had received subtotal tumor resection(STR). Results : The mean age of the patients was 39 years (ranged from 7 to 60). The male to female ratio was 3:10. The average tumor size was 4.1×3.0×3.0cm. Of the thirteen patients, twelve patients had pre-operative cranial nerve deficits (CN II, III, V, VI, VII, VIII, XII) and another three patients had hemiparesis. Postoperative evaluation was performed for all patients after tumor resection. The new cranial nerve complications after surgery were found in five (38.5%) patient in the following order : facial palsy, hearing loss, extraocular paresis and double vision. The second most common morbidities were motor deficits (15.4%, n=2) in the early opstoperative period. In the pathological findings after surgery, schwannoma(n=5), meningioma(n=4), chondrosarcoma(n=1), pilocytic astrocytoma(n=1), embryonal carcinoma(n=1) and anaplastic oligodendroglioma(n=1) have been reported in excised tumors. Conclusion : Tumor resection is helpful to relatively young age of the patient with giant skull base tumor who do not have improvement in the conservative treatment. We found that the extended trans-labyrinthectomy combined with anterior and posterior petrosectomy are ways to minimize mortality and major morbidity. Further studies are needed to evaluate the effectiveness of the procedure in the future.

당뇨병 환자의 지속적인 모니터링을 위한 비침습적인 종이 기반센서

김강현(Kang Hyeon Kim),김범창(Beom Chang Kim),김보민(Boh Min Kim),박재현(Jae Hyun Park) 대한전기학회 2023 대한전기학회 학술대회 논문집 Vol.2023 No.7

이종 집적 유연 반도체 시스템 구현을 위한 무기물 박막소재의 전사 방법

주경현 ( Gyeong Hyeon Ju ),김정현 ( Jeong Hyeon Kim ),박상윤 ( Sang Yoon Park ),김강현 ( Kang Hyeon Kim ),이한얼 ( Han Eol Lee ) 한국전기전자재료학회 2024 전기전자재료학회논문지 Vol.37 No.3

With the recent development of emerging technologies, information acquisition and delivery between users has been actively conducted, and inorganic thin film transfer technology that effectively transfers various materials and devices is being studied to develop flexible electronic devices accordingly. This is aimed at innovative structural changes and functional improvement of electronic devices in the era of the Internet of Things (IoT). In particular, advanced technologies such as micro- LEDs are used to realize high-resolution flexible displays, and the possibility of heterogeneous integrated technologies can be presented by precisely transferring materials to substrates through various transfer process. This paper introduced physical, chemical, and self-assembly transfer methods based on inorganic thin film materials to implement heterogeneous integrated flexible semiconductor systems and introduces the results of application studies of semiconductor devices obtained through different transfer technologies. These studies are expected to bring about innovative changes in the field of smart devices, medical technology, and user interfaces in the future.

Methoxycinnamidopropyl Polysilsesquioxane의 랫드를 이용한 배·태자 발생독성 연구

홍정섭 ( Jeong-sup Hong ),임정현 ( Jeong-hyeon Lim ),김강현 ( Kang-hyun Kim ),박명규 ( Myeong-kyu Park ),조기연 ( Ki-yeon Jo ),박길종 ( Gil-jong Park ),정택규 ( Taek-kyu Jung ),김자영 ( Ja-young Kim ),윤경섭 ( Kyung-sup Yoon ) 대한화장품학회 2011 대한화장품학회지 Vol.37 No.3

기존의 유기계 자외선차단제는 피부투과 및 자극으로 인한 안전성의 문제가 제기되었으며, 무기계 자외선차단제는 나노화에 따른 안전성 문제가 제기되고 있다. 이로 인하여, 최근의 자외선차단제 연구는 유효성뿐만 아니라 안전성이 우수한 다양한 형태의 자외선차단제가 연구되고 있으며, 그 중의 하나가 유기-무기 결합구조의 자외선차단제에 관한 연구이다. 본 연구진은 가교된 고분자 입자 타입의 신규 자외선차단제로서 메톡시신나미도프로필실세스퀴옥산의 제조, 물성 및 유효성 평가에 대하여 보고한 바가 있다. 본 연구는 신규 자외선차단제인 메톡시신나미도프로필실세스퀴옥산의 랫드에 대한 배·태자 발생독성 연구에 관한 것으로서, 이러한 평가는 본 시험물질이 임상에서 임신 전·후에 노출 되었을 경우 불임 및 배ㆍ태아의 이상에 대한 구체적인 정보를 제공해줄 것으로 기대된다. Existing organic UV protection materials seem to be problematic due to their penetration and irritation to skin. Inorganic UV protection materials are also at issue for safety of their nano-type transformation. Therefore, the recent studies of UV protection materials have been focused not only on the effectiveness but also on their safety. One of the UV protection materials in study which have higher safety is the organic-inorganic conjugation type UV protection material. Previously, we have reported the manufacturing process, physical property and UV protection efficiency of methoxychinnamidoprophy poloysilsesquixan as a new cross-linked polymer type UV protection material. In this study, we have evaluated the effect of the methoxychinnamidoprophy poloysilsesquixan on embryo-fetal development in SD rats. This study is expected to show some definite information related to the effect on pregnancy or embryo-fetal abnormality in case of the clinical exposure of the methoxychinnamidoprophy poloysilsesquixan.

암모니아 추진 모델 적용을 위한 연구: 실습선을 중심으로

양가영(GA-YOUNG YANG),안재우(JAE-WOO AHN),홍성빈(SUNG-BIN HONG),김강현(KANG-HYEON KIM),박재민(JAE-MIN PARK),류보림(BO RIM RYU),강호근(HO KEUN KANG) 한국항해항만학회 2022 한국항해항만학회 학술대회논문집 Vol.2022 No.2

현재 온실가스 배출 증가로 인해서 지구의 이상기후현상의 끝임없이 발생하는 가운데 온실가스 감소를 위해서 각 국제기구에서는 여러 규정을 구획하며 노력하고 있는 상황이다. 규정을 지키며 온실가스 감소를 위해서 친환경 선박이 연구되어지고 있는 추세이다. 이 논문은 친환경 선박이 연구되어지는 현 상황에서 친환경 선박, 그중에서 SOFC 연료전지를 이용하는 암모니아 연료추진선박의 case study를 통해서 암모니아 SOFC 연료전지추진선박의 연료추진시스템의 모델링을 하고, 암모니아 SOFC연료전지추진선박이 얼마나 기존의FO를 사용하는 선박과 비교하여 에너지효율 및 탈탄소에 큰 이점을 가져다 줄 수 있는지에 대한 정보를 줄 수 있다. Currently, due to the increase in GHG emissions, the global weather phenomenon is constantly occurring, and each international organization is trying to reduce 온실가스 through various regulations to reduce GHG. To comply with the regulations, eco-friendly ships are currently being studied to reduce GHG. This paper models the fuel propulsion system of NH3 sofc fuel cell propulsion ship through the case study of eco-friendly ships, especially NH3 fuel cells, and provides information on how NH3 sofc fuel cell propulsion ships can benefit energy efficiency and decarbonization compared to existing FO vessels.

외상성 후두와 병소에 대한 임상적 고찰

김강현,조기홍,김한규,조경기,최중언 대한신경외과학회 1988 Journal of Korean neurosurgical society Vol.17 No.4

Author analyzed 117 patients with traumatic lesions in posterior cranial fossa who had been treated at the Department of Neurosurgery in Jeonju Presbyterian Medical Center from January 1982 to December 1985. Results are summarized as follows : 1) The traumatic lesions in posterior cranial fossa were 4.97% of all head injuries. 2) 73 out of 117 patients were male and female were 44 cases. 75.2% of cases were found bleow age of 40. 3) The most common cause of injuries was traffic accident with motor vehicle(50%). 4) Occipital skull fractures were found in 69 cases(50.4%). Most of them were linear type. There were 15 epidural hematoma(12.8%), 6 cerebellar hematoma, 4 pontine hematoma, 1 subdural hematoma. 5) 67 cases of all patients were on Grady coma scale grade 1 and 2. 48 cases were on Grady coma scale grade 3 and 4. 2 cases were on Grady coma scale grade 4 and 5 on admission. 6) 13 cases with traumatic hematomas in posterior cranial fossa were treated surgically and 13 cases conservatively. 3 of them were expired. 7) There were 61 cases associated injuries(52.1%). Commonly associated injuries were the fracture of rib, clavicle and femur. 8) 50 out of 117 cases showed sequelae : Motor weakness and cranial nerve palsies were main deficits. 9) The total mortality of traumatic posterior fossa lesions was 12.8%(15 cases) and the operative mortality was 15.4%(2 cases).