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Kim, Shin-Hyun,Park, Hyo Sung,Choi, Jae Hoon,Shim, Jae Won,Yang, Seung-Man WILEY-VCH Verlag 2010 Advanced materials Vol.22 No.9
<B>Graphic Abstract</B> <P>The cover shows a schematic illustration of patterned colloidal photonic crystals with different bandgap positions. When an unknown light source impinges on the patterned photonic crystals, the light information can be identified from the reflection intensity profile of the constituent photonic crystals. The two optical microscopy images and background image display integrated photonic crystals with 20 different bandgaps spanning the entire visible range, and the SEM image shows the cross-section of the photonic crystal stripes, as reported by Shin-Hyun Kim, Seung-Man Yang, and co-workers on p. 946. <img src='wiley_img_2010/09359648-2010-22-9-ADMA201090022-content.gif' alt='wiley_img_2010/09359648-2010-22-9-ADMA201090022-content'> </P>
( Hyun Jung Kim ),( Hyo Jung Eom ),( Chulwoo Park ),( Jaejoon Jung ),( Bora Shin ),( Wook Kim ),( Namhyun Chung ),( In Geol Choi ),( Woojun Park ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.3
Microbially induced calcium carbonate precipitation (CCP) is a long-standing but re-emerging environmental engineering process for production of self-healing concrete, bioremediation, and long-term storage of CO2. CCP-capable bacteria, two Bacillus strains (JH3 and JH7) and one Sporosarcina strain (HYO08), were isolated from two samples of concrete and characterized phylogenetically. Calcium carbonate crystals precipitated by the three strains were morphologically distinct according to field emission scanning electron microscopy. Energy dispersive X-ray spectrometry mapping confirmed biomineralization via extracellular calcium carbonate production. The three strains differed in their physiological characteristics: growth at alkali pH and high NaCl concentrations, and urease activity. Sporosarcina sp. HYO08 and Bacillus sp. JH7 were more alkali- and halotolerant, respectively. Analysis of the community from the same concrete samples using barcoded pyrosequencing revealed that the relative abundance of Bacillus and Sporosarcina species was low, which indicated low culturability of other dominant bacteria. This study suggests that calcium carbonate crystals with different properties can be produced by various CCP-capable strains, and other novel isolates await discovery.
金熙哲,申孝根 경희대학교 건축도시연구소 1995 건축도시연구소논문집 Vol.15 No.-
저층의 철근콘크리트 구조물에 지하철의 운행에 의한 거동을 조사하였다. 적용된 하중은 지하철의 운행시 터널의 바닥에서 측정된 진동 가속도를 사용하였다. 지하철의 운행에 의하여 발생되는 진동 중 고주파 성분은 대부분 지반을 통과하면서 흡수되며, 이러한 고주파 성분들은 건물과 같이 중량이 큰 구조물에는 거의 영향을 미치지 않으므로 이러한 효과를 고려하기 위하여 DFT(Discrete Fourier Transform)를 사용한 기법을 응용하였다. 경간이 다른 4가지 종류(6m,7.2m, 8m, 9m)의 저층 철근콘크리트 건물에 대한 거동을 조사한 결과 8m 경간을 가진 건물이 초대 반응을 보였다. 따라서 지하철 운행로 주변의 건물의 경우 8m 경간을 피하는 것이 좋은 것으로 나타났다. Response of low-rise reinforced concrete building due to subway operation has been studied by forcing modified actual vibration acceleration obtained from invert of the tunnel structure. Discrete Fourier Transformation(DFT) and the inverse a DFT was since most of the high frequency vibration is eliminated while it is passing through the soil. Furthermore, high frequency vibration gives little effect to massive structure such as buildings. It was found from this study that 8m span length of low-rise reinforced concrete building is not recommended nearby railway tracks since the amplitude of a vertical vibration showed maximum value compared to other 4(6m, 7.2m, 8m and 9m) types.
Kirschner wire를 사용한 과두하 골절의 구강내 접근법
김성일,김승룡,백진아,고승오,신효근 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.3
The treatment of mandibular subcondylar fractures is a matter of controversy. The majority of mandibular subcondylar fracture are treated by closed reduction, but the displaced or dislocated mandibular subcondylar fractures may be treated by open reduction. The characteristics of open reduction are the anatomical reduction, the functional restoration, the rapid function, the maintenance of vertical ramus dimension, the better appearance and the less resultant TMJ problem etc. When an open reduction is considered, the wire, miniplate, lag screw and Kirschner wire are available with internal fixation. Of these, Kirschner wire is a simple method relatively and correct positioning of the wire achieves rigid fixation. But many open reduction methods for mandibular subcondylar fractures require extraoral approach. The extraoral approach has some problems, the facial scar and the risk of facial nerve injury. On the other hand, the intraoral approach eliminates the potency of the facial scar and the facial nerve injury, but is difficult to access the operation site. Since the intraoral approach was first described by Silverman (1925), the intraoral approach to the mandibular condyle has been developed with modifications. The purpose of this article is to describe the intraoral technique with the Kirschner wire on mandibular subcondylar fractures. Conclusion : The intraoral reduction with Kirschner wire on mandubular subcondylar fractures avoids the facial scar and facial nerve injury and is simple method to the extraoral approach. And it has minimal morbidity and better esthetics.
김찬양,신효근,홍기환,김연희,김현기 全北大學校 語學硏究所 1994 어학 Vol.21 No.-
The methods of the Computed Tomograph and the High-speed Speech analysis system were used for the comparative study of French and Korean oral vowels. Three male native speackers of French and three Korean speakers were selected for these articulatory and acoustic characteristics. The speech materials were the simple French oral vowels / i, e, ε, a, u, o, ??, a / and the Korean oral vovels / i, e, ε, a, w, u, o /, respectively. The results of these studies are as follows : (1) In the case of articulation, the aperture of Korean closed front unrounded vowels is larger than that of French vowels and the Korean back closed vowel /u/ and the half-closed vowel /o/ did not show significant differences with the corresponding French high vowel /i/. But the aperture of the Korean half-open vowel /??/ is smaller than that of French vowel and in this case, the place of articulation for Korean vowel /??/ is more advanced than that of French vowel /??/ (2) By means of spectrographic analysis of the French and Korean vowels, the first formant of the Korean high vowel /i/ is higher than that of French high vowel /i/. This means that the aperture of the Korean high vowel is larger than that of French high vowel. The second formant of French back vowels are lower than those of Korean back vowels. This result shows that the projection of French back vowels is greater than that of Korean back vowels.
김효언,윤규호,전인성,신재명,한광홍,배정호 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.1
Odontomas are odontogenic harmatomas which are composed of hard dental tissue. This lesion is composed of more than one type of tissue and, for this reason, has been called a composite odontoma. Odontogenic cysts are derived from epithelium associated with the development of the dental apparatus. Dentigerous cyst originated after the crown has been completely formed by accumulation of fluid between the reduced enamel epithelium and the crown. It also associated with crown of impacted tooth. Cystic odontomas are closely similar to dentigerous cysts clinically and radiologically. Treatment of choice is total removal(enucleation) or decompression(marsupialization). We represent two cases of Cystic odontomas with literature review in 69-year old male and 55-year old female occured in anterior maxilla. The leisions were successfully treated by marsupializaion.
시간지연 제어기법을 이용한 유연한 로봇 팔의 위치 제어
김동기,강이석,신효필 忠南大學校 産業技術硏究所 1995 산업기술연구논문집 Vol.10 No.2
A TDC(Time Delay Control) theory is applied to the the position control problems of flexible robot manipulators subjected to unknown dynamics and distrurbances. One link flexible manipulator system with tip mass is represented as a simple spring-mass-damper syseem and AC servo motor is used as the actuator. Based on the system model, the TDC is designed, and the PI-controller is also designed for comparison. The control performance of TDC is evaluated through a series of simulations and experiments. The simulational and wxperimental results show that the TDC is much robust than the PI-controller to the unknown dynamics and disturbances.