Neurofibromatosis Type 2와 무관하게 발생된 척추 경막내 다발성 신경초종 - 증 례 보 고 -

김정태,성정남,박봉진,조맹기,김영준,Kim, Jung Tae,Sung, Jung Nam,Park, Bong Jin,Cho, Maeng Ki,Kim, Young Joon 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.4

Most extracranial schwannomas are solitary, but neurofibromas are frequently associated with other manietations of neurofibromatosis. Schwannomas that occur within the context of neurofibromatosis tend to be multiple, but multiple schwannomas without manifestation of neurofibromatosis type 2 are very rare. The authors report a very rare case of multiple spinal intradural schwannomas in the absence of neurofibromatosis Type 2 maniestations. A 40-year-old man suffered from longstanding low back pain and left side sciatica which was treated with two stage operations. MRI showed multiple intradural mass lesions extending from L1 vertebral segment to S1 vertebral segment. There were no clinical and radiological manifestations of Type 2 neurofibromatosis. Histologically confirmed diagnosis was schwannoma.

뇌하수체졸중의 임상적 고찰

김정태,박봉진,성정남,김영준,조맹기,Kim, Jung Tae,Park, Bong Jin,Sung, Jung Nam,Kim, Young Joon,Cho, Maeng Ki 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.6

Objectives : Pituitary apoplexy is a well-described clinical syndrome resulting from pituitary hemorrhage, hemorrhagic infarction, or infarction, almost invariably occurring in the presence of an adenoma. We analyzed pituitary apoplexy with an emphasis on clinical presentation, pathology and predisposing factors. Methods : We reviewed 35 histologically proven pituitary adenomas, operated from January 1995 to August 1999, to select 8 cases which showed clinical or operative findings compatible with pituitary apoplexy. These patients were analyzed in terms of symptom and sign, hormonal status, and predisposing factors, pathologic findings. Results : Among 35 surgically treated tumors of the pituitary gland, 8 cases(23%) were diagnosed as pituitary apoplexy. The pathologic findings revealed hemorrhage(7 cases) and infarction(1 case) of pituitary adenomas. One case had predisposing factor of appendectomy. The most common presenting symptom and sign were sudden severe headache and visual disturbance. Conclusion : We treated pituitary apoplexy surgically and obtained good outcomes. Pituitary apoplexy due to massive infarction of the pituitary gland is very rare condition but surgical treatment by trans-spheniodal surgery showed a good result.

3차원 수치해석을 이용한 지진 시 수직구-터널 접속부 동적 거동 분석

김정태,조계춘,강석준,김기중,홍은수,Kim, Jung-Tae,Cho, Gye-Chun,Kang, Seok-Jun,Kim, Ki Jung,Hong, Eun-Soo 한국터널지하공간학회 2018 한국터널지하공간학회논문집 Vol.20 No.5

3D time history analysis was performed on vertical shaft-tunnel connection to provide insight into the dynamic stress-strain behavior of the connection considering the effects of soil layers, periodic characteristics and wave direction of earthquakes. MIDAS GTS NX based on FEM (Finite Element Method) was used for this study. From this study, it is revealed that the maximum displacement occurred at the upper part of the connection when the long period seismic waves propagate through the tunnel direction in soft ground. Also, stress concentration occurs due to different behaviors of vertical shaft and tunnel, and the stress concentration could be influence for safety on the connection. The results of this study could be useful for the seismic performance design of vertical shaft-tunnel connection. 수직구와 수평 터널 주위 지층 변화, 지진파 방향성이 접속부의 동적 거동 특성에 미치는 영향을 연구하였다. 유한 요소 기반의 MIDAS GTS NX 프로그램을 이용한 3차원 시간이력 해석을 통해 검토하였다. 연구결과 연약지반에서 장주기의 지진파가 수평 터널 방향으로 발생하였을 때 접속부 상부에서 최대 변위가 발생하는 것으로 나타났다. 또한 수직구와 수평 터널의 서로 다른 거동 및 지층 경계면의 영향으로 인해 응력집중 현상이 발생하여 문제가 될 수 있음을 확인 할 수 있었다. 연구 결과는 수직구와 수평 터널의 접속부 구조물 내진설계를 위한 기초자료로 활용 될 수 있을 것으로 기대된다.

아토피 피부염 환자에서 한방 추출물이 포함된 외용제품에 대한 임상 효과

김정태,정현아,노석선,김창훈,Kim, Jung-Tae,Jung, Hyeon-A,Roh, Seok-Seon,Kim, Chagn-Hun 대한한방안이비인후피부과학회 2007 한방안이비인후피부과학회지 Vol.20 No.2

Background : Atopic dermatitis is a chronic and recurrent allergy eczema, called as 'Tae-yul'. It is a characteristic dermatitis, diagnosed from baby to adult, that carries severe itching. Objectivd : The aim of this trial is to examine the effect and safety of Medibebe in patients with atopic dermatitis. Methods : We made a comparison between before and after the use this product. Volunteers who satisfied the requirements were enrolled in the study. Degrees of severity of atopic dermatitis were measured by SCORAD index. Results : After 4 weeks' use of Medibebe, SCORAD index showed a decrease of $20.0{\pm}10.2$(95% C.I: 17.1-22.9) compared with when it was not applied, which is a statistically meaningful change(p-value<0.0001). Subjective pruritus and Sleeping loss reported after both 2 and 4 weeks' use of Medibebe decreased in a statistically meaningful way(p-value<0.0001) compared with before the application. but, 2 cases out of all 50 subjects for the clinical trial were excluded on the way. Conclusion : As a result of applying the 4 items of Medibebe(cream, lotion, soap, and body cleanser) to patients with atopic dermatitis and watching the progress, it is concluded and considered that these cleansing and moisturizing products can be used by atopic patients safely and effectively with almost no side-effect.

개방형 무선 통신망 구조를 위한 복합 보안 프레임워크 설계

김정태,Kim, Jung Tae 한국정보통신학회 2013 한국정보통신학회논문지 Vol.17 No.6

다음은 요약문 입니다. 여러 종류의 무선 통신망들에 대한 통합화된 서비스에 대한 수요가 요구되고 있다. 이러한 요구는 기존의 유선망과 무선 통신망의 통합 배치를 통하여 가능하게 되었다. 각각의 무선 통신망들은 기존이 망들에 비해 고유의 특징을 가지고 있다. 개방형 무선 통심 환경 하에서의 주요한 문제 중의 하나가 보안성에 관련된 문제이다. 개방형 환경 하에서 통합된 환경의 보안성을 실현하기 위해서는 현실에서 실제적으로 적용 가능한 통합 보안 구조를 개발하여야 한다. 따라서 본 논문에서는 이러한 요구조건을 만족하기 위해서 고려해야 하는 사항들을 분석하였다. The increasing demand of users for various wireless communication services has lead to the development with uniting co-existence of different and wireless networks. Each one of the these wireless networks has its own unique characteristics, as compared to other networks. An integrated security mechanism is one of the key issue in the open wireless network. To realize overall security mechanism in open wireless architecture, we should provide practical workable framework for the realization of the integrated security challenges. In this paper, we analysed integrated security platform and considerations based on the security concept.

횡복직근 유리피판을 이용한 유방재건술에서의 즉시 유두재건

김정태,김창연,차지훈,황원중,Kim, Jeong Tae,Kim, Chang Yeon,Cha, Ji Hun,Hwang, Weon Jung 대한성형외과학회 2005 Archives of Plastic Surgery Vol.32 No.1

Immediate breast reconstruction in breast cancer patients is universalized and now with a wide variety of methods to choose from, we can select a breast reconstruction method according to the patient's condition. Among these methods, immediate breast reconstruction with TRAM free flap is the most commonly used. Nipple reconstruction is usually performed as a secondary procedure, reconstructed. Nipple is reconstructed with contralateral nipple composite graft or with local flap. Areola is reconstructed with skin graft and tattooing. Therefore, to reconstruct complete breast, two or more staged operations are needed and are troublesome to both the surgeon and the patient. If we could reconstruct breast mound and nipple at same time, we would reduce the operative stages and heighten the patient's satisfaction. The author performed delayed or immediate breast reconstruction with TRAM free flap and nipple reconstruction at the same time. If the TRAM flap was to situate in the whole of the breast or at the center of the breast mound, nipple was reconstructed with a local flap from the TRAM flap. If the TRAM flap was not situated in center of breast mound, nipple was reconstructed with a local flap from remnant breast skin. Immediate nipple reconstructions in breast reconstruction consisted total of 22 cases. Among these, delayed breast reconstruction were 5 cases and immediate breast reconstruction were 17 cases. According to patient's condition and mastectomy method, nipple reconstruction method was selected; nipple reconstruction with contralateral nipple composite graft(3 cases); nipple reconstruction with remnant breast skin(6 cases); nipple reconstruction from flap margin(10 cases); nipple reconstruction with prefabricated nipple on flap(3 cases). Malposition of the reconstructed nipple was the most common and serious complication(6 cases). The other complications were atrophy of the nipple(1 case), and necrosis(1 case). Reconstruction of the breast and nipple at the same time can reduce the need of a secondary operation and use remnant skin or redundant flap tissue maximally. On the other hand, it must be considered that position and shape of nipple could be deformed, because the nipple reconstruction is performed before the shape of reconstructed breast settles completely. Prudent attention is needed, because the danger of complication is higher than delayed nipple reconstruction.

화학II 교과서의 STS 내용 분석

김정태,김윤희,문성배,Kim, Jung-Tae,Kim, Yun-Hi,Moon, Seong-Bae 대한화학회 2002 대한화학회지 Vol.46 No.1

본 연구는 제6차 교육과정에 의해 편찬된 7종의 검인정 화학Ⅱ 교과서 중 STS 내용의 포함정도를 알아보고 STS 내용을 단원별, Piel의 주제영역별, 활동영역별로 비교 분석하였다. 그리고 교과서에 STS와 관련된 내용이 어느 정도 반영되고 있고 교과서가 교육과정 목표에 어느 정도 부합되는지를 알아보았다. 7종의 화학Ⅱ 교과서에서는 STS 교육내용이 교과서 지면의 평균 2.7%를 차지하고 있었다. STS 내용의 단원별 분포를 보면 화학결합과 화합물에 3.8%, 원자구조와 주기율 3.2%, 물질의 상태와 용액 2.2%, 물질의 과학에 1.9%, 화학반응 1.9%로 화학결합과 화합물에 STS 내용이 가장 많이 포함되어 있었다. Piel의 STS 주제영역에 따른 STS 교육내용을 살펴보면 기술발달의 영향이 33.7%, 환경문제와 천연 자원의 이용이 27.5%, 인간공학이 19.6%, 에너지가 13.8%, 과학의 사회학이 5.4%이었고, 인구 및 우주개발과 국방에 관련된 내용은 모든 교과서에서 다루고 있지 않았다. STS 주제를 단원별로 분석한 결과를 보면 에너지는 화학결합과 화합물 및 화학반응 단원에, 인간공학, 환경문제와 천연자원의 이용 및 기술발달과 영향은 화학결합과 화합물에 주로 포함되어 있었다. 그리고 과학의 사회학은 원자구조와 주기율 및 화학반응 단원에 주로 포함되어 있었다. STS 교육내용을 SATIS의 활동영역에 따라 분석한 결과는 조사연구와 사례연구가 대부분이었다. 현장활동, 문제해결과 의사결정 및 모의 실험은 매우 적게 나타났으며 역할놀이는 어느 교과서에서도 다루고 있지 않았다. The STS contents, emphasized in the 6th curriculum, in the chemistry textbooks(II) were analyzed. The STS contents in textbooks showed average value of 2.7%. The chapter of ‘chemical bond and compound' were included 3.8% of STS contents. And the chapter of ‘atomic structure and periodic table', ‘state of material and solution', ‘science of material', and ‘chemical reaction' contained 3.2%, 2.2%, 1.9%, and 1.9% of STS contents, respectively. When the STS contents were analyzed by STS topics of Piel, the results are as follows; 33.7% on effect of technological developments, 27.5% on environmental quality and utilization of natural source, 19.6% on human engineering, 13.8% on energy, and 5.4% on sociality of science. However, there were no topics on population, space research and national defense. When the STS contents were analyzed by student activities of SATIS, most of the activities were research and case study. There were few field activities of practical investigation, problem solving and decision making, research design and stimulation. There were no activities of role play.

Ni 촉매층의 두께가 탄소나노튜브의 성장 형태에 미치는 영향

김정태,박용섭,김형진,최은창,홍병유,Kim, Jung-Tae,Park, Yong-Seob,Kim, Hyung-Jin,Choi, Eun-Chang,Hong, Byung-You 한국진공학회 2007 Applied Science and Convergence Technology Vol.16 No.2

본 연구에서는 탄소나노튜브의 성장특성을 결정짓는 여러 요소 중 한가지인 촉매층 두께의 변화에 따라서 형성되어지는 탄소 나노튜브의 형태 변화를 관찰하였다. Ni 촉매층은 마그네트론 스퍼터링법을 이용하여 증착하였으며, Ni 촉매층의 두께는 $20{\sim}80\;nm$의 범위에서 설정하였다. 두께에 따른 Ni 촉매층 기판을 hot-filament 플라즈마 화학기상 증착(HF-PECVD) 장치를 이용하여 탄소나노튜브를 합성하였으며, 성장되어진 탄소나노튜브의 성분분석은 에너지 분산형 X-선 측정기(EDS)를 통해 분석하였고, 고배율 투과전자현미경(HRTEM) 분석과 전계방사 주사전자현미경(FESEM) 분석을 통해 성장된 탄소나노튜브 성장 형태를 관찰하였다. 그 결과로써, 고배율 투과전자현미경(TEM) 분석을 통해서는 탄소나노튜브는 내부가 비어있으며, 다중벽으로 구성되어 있는 것을 관찰하였고, 탄소나노튜브 상부에 니켈 금속이 포함된 것을 확인하였다. 이것은 분산형 X-선 측정을 통해 탄소나노튜브의 구성성분이 접착층인 Ti, 촉매층인 Ni 그리고 탄소(C)로 이루어졌음을 다시한번 확인하였으며. 성장형태에서도 알 수 있듯이 탄소나노튜브 성장 전에 행해여지는 전처리는 촉매층의 입자를 변화시키고 변화된 촉매층의 표면은 다른 형태의 탄소나노튜브를 성장시킴을 알 수 있었다. 결과적으로, 40 mn의 촉매층을 지니는 기판에서 가장 좋은 형태를 나타내는 탄소 탄소나노튜브가 성장되었음을 알 수 있다. In this study, we observed the shapes of CNTs formed with the thinckness of catalyst. Catalyst layer was grown by magnetron sputtering method and the thickness of Ni catalyst is the range from 20 to 80 nm. Also, the synthesis of CNT with Ni catalyst thickness was grown by hot-filament PECVD method. And, we investigated the composition of CNTs by using EDS measurement, also observed the shapes of CNTs by using HRTEM and FESEM measurements. In the result, through the TEM analysis, we observed the empty inside of CNTs and the multiwall CNTs, also confirmed the tip of CNT containing Ni. The composition of CNTs are consisted of an element of C, Ti, and Ni. As you shown the growth shapes of CNTs, the pretreatment of the catalyst before te growth of CNTs changed the particle size of the catalysts and grown the CNTs of the different shapes. Consequently, the best vertically alined and well-arranged CNTs exhibited from the substrate deposited at the catalyst thickness of 40 nm.

무치악에서 Implant Over Denture의 심미성 및 기능성

김정태,Kim, Jung-Tae 대한심미치과학회 2000 Journal of the Korean Academy of Esthetic Dentistr Vol.9 No.1

말초 이골증을 동반한 Joubert Syndrome 1례

김정태,김선준,주찬웅,조수철,이대열,Kim, Jung Tae,Kim, Sun Jun,Joo, Chan-Uhng,Cho, Soo Chul,Lee, Dae-Youl The Korean Pediatric Society 2007 Clinical and Experimental Pediatrics (CEP) Vol.50 No.3

본 증례 보고는 작은 키와 단지증을 가진 전형적인 Joubert Syndrome 환아의 10년간 장기 추적 관찰한 결과이다. 환아는 영아기 초기부터 저호흡이 동반된 빈호흡, 율동성 안구 운동, 근긴장저하를 보였다. 생후 5개월에 Joubert Syndrome의 임상 증상과 전형적 MRI 소견을 보여 진단되었다. 비정상 호흡과 안구 운동은 4세경에 사라졌다. 두위는 정상 범위를 유지하였으나 키와 몸무게는 뚜렷히 정체되었다. 단순 방사선 소견 상 뇌압 상승 소견이 있는 커진 두개골과 안면골의 저형성, 손과 발의 비정상적 연골 형성을 보였다. 본 증례는 말초 이골증이 있는 Joubert Syndrome의 첫번째 보고이다. This report describes the long-term follow-up of a 10-year-old female patient with Joubert syndrome with short stature and brachydactyly. She presented with hyperpnea alternated with hypopnea, uncontrolled jerking eye movements, and hypotonia during early infancy. She was diagnosed with Joubert syndrome based on clinical symptoms and typical MRI findings at 5 months of age. Abnormal ventilation and eye movements disappeared at around 4 years of age. Head circumference kept within normal range for her age, but her height and weight growth were markedly retarded. Simple X-ray showed an enlarged skull with increased digital markings, hypoplasia of facial bones, and abnormal enchondral bone formations in hands and feet. This article is the first report of Joubert syndrome with peripheral dysostosis.