미생물 혼합 모르타르에 미치는 방해석 나노소재 석출의 영향

김성태,이창준,김화중,이준철,Kim, Sung-Tae,Lee, Chang-Joon,Kim, Wha-Jung,Lee, Jun-Cheol 대한건축학회 2012 대한건축학회논문집 Vol.28 No.5

This study mainly refers to the influence of micro-biologically induced mineral precipitation able to be used as innovative bio-nano technology on the mechanical performance of mortar. Newly selected microorganisms at Jeju Island and sporosarcina pasteurii remarked in the previous study were examined by applying their biomineralization to the mortar. Microorganism mixed mortar specimens were compared with each other and analysed. In this study, experimental groups, mortar specimens mixed with newly selected microorganims at the specific region, were superior control groups mixed with only 0.08% lime water in the compressive strength test and flexural strength test. At curing time passed, microorganism effected the increase of mortar strength and the rate of increase in the mortar compressive strength was decreased. This decrease is considered as reduction of biomineralization on which microorganism directly influenced because microorganism usually sporulates in poor environment like mortar environment. It was identified visually through SEM analysis that microorganism can make minerals. Mineral crystal and components were analysed through XRD and EDS analysis, finally it was demonstrated that biomineralization can improve mortar properties.

The Healing of Circumferential Bony Defects Around SLA Implants with Different Coating Thicknesses of Calcium Phosphate. (Pilot Study)

김성태,Jung-Suk Lee,Ui-Won Jung,Yoo-Jung Um,김창성,정성민,이인섭,최성호 한국생체재료학회 2009 생체재료학회지 Vol.13 No.1

Implants with SLA surface, implants with SLA surface coated with 200 nm thickness of Calcium Phosphate, andimplants with SLA surface coated with 500 nm thickness of Calcium Phosphate were fabricated with ion- beamassisted deposition (IBAD) method. Dental implants were placed with surgically created circumferential 2 mm gapdefects in four male Mongrel dogs. The animals were sacrificed after 8 weeks. Specimens were evaluated histologically. The aim of study was to evaluate the bone healing around SLA (Sandblast, Large grit, acid-etched) implantswith different coating thickness of Calcium Phosphate (CaP) in 2 mm circumferential bony defect. Irrespective ofnano-coating thicknesses, SLA implants coated with Calcium Phosphate (I-CaP200, I-CaP500) didn’t show any differencein tissue response from SLA implant without coating (I-SLA).

대퇴 연골편에 의해 정복이 불가능한 슬관절 후외방 탈구 - 1예 보고 -

김성태,이봉진,박우성,이상훈,김태호,이성락,Kim, Seong-Tae,Lee, Bong-Jin,Park, Woo-Sung,Lee, Sang-Hoon,Kim, Tae-Ho,Lee, Sung-Rak 대한정형외과스포츠의학회 2007 대한정형외과스포츠의학회지 Vol.6 No.2

도수정복이 불가능한 슬관절 탈구는 아주 드물게 발생하며, 대부분의 도수정복이 불가능한 슬관절 탈구는 후외방 탈구 시 연부조직이 끼이면서 발생하게 되는데 저자들은 51세 여자환자의 슬관절 탈구에서 박리된 대퇴 내과 연골편에 의해 정복이 불가능했던 지금까지 보고가 없었던 예를 경험하였고, 이를 관절경을 이용한 변연절제술로 연골편을 제거하여 관혈적 수술이 필요 없이 정복을 얻을 수 있었으며 지연성 전방 및 후방 십자인대 재건술을 시행하여 만족할 만한 결과를 얻었다. An irreducible dislocation of the knee joint is quite rare. Most irreducible knee dislocations are posterolateral dislocations and result from the soft tissue interposition. To the best of our knowledge, there is no report of an irreducible knee dislocation result from interposition of the detached cartilage from the medial femoral condyle. We present a case of 51 years old female with irreducible knee dislocation which was treated with an arthroscopic debridement of the detached cartilage, result in reduction of the joint, which is failed in closed reduction. And then we perform the delayed arthroscopic reconstructions for the ruptured anterior and posterior cruciate ligaments. Debridement of the interposed structure using the arthroscope allows for reduction of the joint and good result without the need for an open procedure.

알레르기성 비염 환자들의 음향음성학적 특성 및 음성장애지수

김성태,최승호,노종렬,이봉재,심미란,김상윤,남순열,Kim, Seong-Tae,Choi, Seung-Ho,Roh, Jong-Lyel,Lee, Bong-Jae,Shim, Mi-Ran,Kim, Sang-Yoon,Nam, Soon-Yuhl 대한후두음성언어의학회 2007 대한후두음성언어의학회지 Vol.18 No.1

Background and Objectives: There are few studies reported that specifically examine the phonetic characteristics and voice handicap index (VHI) in patients with Allergic Rhinitis. This study was designed to examine phonetic characteristics and VHI in adult patients with allergic rhinitis. Materials and Methods: Forty-two male patients diagnosed as allergic rhinitis were given skin-prick test and others, aged from 20 to 56 years, and were compared with a 16 male control group with no pathology and in the same age group. The VHI was used to measure the changes of patient's perception. Acoustic and aerodynamic analysis test were done, and a nasalance test performed to measure rabbit, baby, and mother passage. Acoustic rhionometry (AR) was performed to evaluate nasal volume and nasal crosssectional area. Statistical analysis was done using independent sample t-test. Results: VHI showed significantly different score in the studied group, higher than that of control group. AR graph showed that there was no significant differences of nasal volume and nasal cross-sectional area. The Shimmer and SFF value in the group of allergic patients were higher than in the control group. MPT value in the group of allergic patients was lower than in the control group. Nasalance in allergic patients showed hypernasality all passage. Conclusion: We suggest that patients with allergic rhinitis have considerable voice problems. Most of them have hypernasality, which may be a compensatory mechanism by nasal obstruction.

열처리에 따른 은행 외종피 추출물의 생리활성

김성태,이지현,이상훈,장귀영,김민영,윤나라,이준수,정헌상,Kim, Sung Tae,Lee, Ji Hyun,Lee, Sang Hoon,Jang, Gwi Yeong,Li, Meishan,Kim, Min Young,Yoon, Nara,Lee, Junsoo,Jeong, Heon Sang 한국식품영양학회 2015 韓國食品營養學會誌 Vol.28 No.3

은행 가공산업에서 부산물로 제거되는 은행 외종피의 활용성을 증대시키고자 다양한 생리활성에 미치는 열처리의 영향을 살펴보았다. 은행 외종피를 분리하여 $130^{\circ}C$에서 2시간 열처리한 후 물, 70% 에탄올 및 80% 메탄올 추출물을 제조하여 생리활성변화를 살펴본 결과, ABTS와 DPPH 자유라디칼 소거활성은 80% 메탄올 추출물을 제외하고, 열처리 후 증가하는 경향을 보였으며, 물 추출물에서 각각 14.95 mg AAE/g과 7.36 mg TE/g으로 높게 나타났다. ${\alpha}$-Glucosidase 저해 활성은 물 추출물을 제외하고 열처리 시 감소하는 경향을 보였으며, 열처리 전 80% 메탄올 추출물에서 98.66%로 가장 높게 나타났다. Angiotensin converting enzyme I 저해 활성은 추출물 간의 유의적인 차이가 없었으며(P>0.05), 열처리 후 모두 감소하였다. 산화질소 생성억제 활성은 열처리 시 증가하였으며, 물 추출물($200{\mu}g/mL$)이 $12.33{\mu}M$로 LPS 처리구에 비해 산화질소 생성량을 72.39% 감소시켰다. 지방구 축적억제 활성은 세포독성을 보이지 않는 농도에서 열처리 시 감소하였다. 유방암 세포주에 대한 항암 활성은 열처리 후 증가하는 경향을 보였다. 이상의 결과로부터 은행 외종피 추출물의 다양한 생리활성을 확인하였으며, 특히 열처리 후 항산화 활성과 유방암 세포주에 대한 증식억제 활성이 크게 증가하였으며, 추후 생리활성물질의 규명 연구가 필요하다고 판단된다. This study was performed to investigate the physiological activities of Ginkgo biloba sarcotesta extracts before and after heat treatment. G. biloba sarcotesta was heated at $130^{\circ}C$ for 2 h and extracted with water, 70% ethanol and 80% methanol. ABTS and DPPH radical scavenging activities increased after heating in the water (14.95 mg AAE/g and 7.36 mg TE/g) and ethanol extracts (12.20 mg AAE/g and 6.23 mg TE/g). ${\alpha}$-Glucosidase inhibitory activity decreased after heating in all but the water extract. Angiotensin converting enzyme I inhibitory activities decreased after heating in all extracts. Nitric oxide production inhibitory activity increased from 12.40~44.55% of the raw sample to 40.76~72.39% of the heated sample at a concentration of $200{\mu}g/mL$. Lipid accumulation inhibitory activities were similar before and after heat treatment. The highest antiproliferative effects on MCF-7 human breast cancer cell lines were observed in 80% methanol extract in the heated sample. Cell viability at concentrations of 25, 50, 100, and $200{\mu}g/mL$ measured 34.88, 17.58, 8.44 and 10.48%, respectively. From the results, the antioxidant and antiproliferative activities of G. biloba sarcotesta extracts increased with heat treatment, and research on the identification of the structure for the active compounds are needed in further studies.

족관절 및 장족무지 굴건막에 동시에 발생한 활액막 연골종증

김성태,이성락,이봉진,김성수,문명상,김기천,윤민근,Kim, Seong-Tae,Lee, Sung-Rak,Lee, Bong-Jin,Kim, Sung-Soo,Moon, Myung-Sang,Kim, Ki-Chun,Yoon, Min-Geun 대한족부족관절학회 2010 대한족부족관절학회지 Vol.14 No.2

Synovial chondromatosis is a benign lesion forming multiple round cartilagenous nodules or osseous loose bodies in joint cavity. Predilection sites are known as knee, hip and elbow joints. However, the involvement of ankle joint was rarely reported in the literature. Moreover, extraarticular chondromatosis in synovial sheath or bursa of extremities is extremely rare. We present a case of synovial chondromatosis of the left ankle joint and flexor hallucis longus tendon sheath.

2005 INTA Annual meeting 참관기

김성태,이성식,Kim, Seong-Tae,Lee, Seong-Sik 한국특허정보원 2005 Patent 21 Vol.62 No.-

시스템 다이내믹스를 활용한 건설 특급기술자 수급전망

김성태,이현수,안선주,류한국,박문서,Kim, Sung-Tae,Lee, Hyun-Soo,An, Sun-Ju,Ryu, Han-Guk,Park, Moon-Seo 한국건설관리학회 2007 건설관리 : 한국건설관리학회 학회지 Vol.8 No.5

By prosperous condition of construction economy in the early 90s in Korea, the government needed a lot of the qualified professional engineers (PE) to manage the construction site. In order to meet the high demand of P.E., Government has established the admitted engineer systems(AES) in 1995 that give the authority of principal engineers to the admitted engineers who do not take the written examination but have equivalent working experience. Since 2000, professional $engineer^{\circ}{\phi}s$ shortage has been resolved. however, the opposite situation, which is serious over-supply of construction engineers has occurred. Thus, Government announced that would abolish the admitted engineer systems as recognized the existent admitted engineers(about 1,000,000 persons) from 2007. However, Professional Engineers Institution has strongly insisted that Government should not recognize existent admitted engineers. From this point of view, it is critical to make the supply-demand forecast systems as a derivative approach of System Dynamics also, that is useful in comparing the argument between Government and Professional Engineers Institution. This paper describes about principal $engineer^{\circ}{\phi}s$ supply change by admitted engineer system abrogation and suggests the idea to regulate the supply and demand with the improvement of the regal system. 90년대 초 한국의 건설 경기가 호황을 누리면서 건설현장을 관리할 수 있는 특급기술자에 대한 수요가 커졌었다. 이러한 특급기술자의 수요를 맞추기 위해 정부는 1995년에 기술사 시험에 의하지 않고 단지 경력 년 수만으로 특급기술자 자격을 부여하는 인정기술자제도를 만들었다. 그러나 2000년 이후 특급기술자의 부족 현상은 해소되었고, 그 반대로 특급기술자의 심각한 과잉공급이 초래되었다. 따라서 정부는 인정경력자제도를 폐지(기존의 인정경력자를 인정)하는 개정법을 시행하고 있다. 그러나 여전히 기술인 협회에서는 기존의 인정기술자까지도 인정하지 말아야한다며 대립된 주장을 펴고 있다. 본 연구에서는 이러한 대립 관점에서 시스템 다이내믹스 방법론을 이용하여 수요공급 예측 모델을 통해 정부와 기술인협회 사이의 대립된 주장을 해결할 수 있는 실마리를 제공할 것이다. 본 논문은 각 시나리오를 통해 인정기술자제도의 폐지이전(개정법 이전)과 개정법에 따른 인정기술자제도 폐지 후의 특급기술자의 공급 변화를 비교하고 있으며, 차후의 정책 입안자가 특급기술자의 수요와 공급의 균형을 위한 제안점을 시사하고 있다.

재발한 정맥내 평활근육종증

김성태(Seong Tae Kim),정영섭(Young Sub Jung),이동규(Dong Kyu Lee),신봉식(Bong Sik Shin),정용환(Yong Hwan Jung),이효진(Hyo Jin Lee) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.4

Intravenous leiomyomatosis is an uncommon uterine tumor characterized by the growth of histologically benign smooth muscle initially into venous channels within the broad ligament, intrauterine, and iliac vein, and can extend to inferior vena cava, and right side of the heart. Intravenous leiomyomatosis is always grossly visible as worm-like plugs within the involved vessels. A 41-year-old woman presented with lower abdominal mass, and she had undergone total abdominal hysterectomy and left salpingoophorectomy for leiomyoma of uterus. On pathological examination it was diagnosed as intravenous leiomyomatosis. 16 month later, She was admitted with lower abdominal mass on retroperitoneal cavity. The patient was successfully treated by resection of recurred mass and right salpingoophorectomy. A case of recurrent intravenous leiomyomatosis is presented with a brief review of literatures.

절화장미 예냉 및 습식처리가 절화수명에 미치는 영향

김성태(Seung Tae Kim),김원희(Won-Hee Kim),이은경(Eun-Kyung Lee),이수영(Soo-Young Lee),권오현(O-Hyeon Kwon),문보흠(Bo-heum Mun) 한국원예학회 2011 한국원예학회 학술발표요지 Vol.2011 No.10