http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
역학적 축 선정에 따른 전후면 경골천장각의 단순방사선학적 분석
박진성,정순택,황선철,김동희,곽지용,윤홍권,남대철,Park, Jin-Sung,Jeong, Soon-Taek,Hwang, Sun-Chul,Kim, Dong-Hee,Gwark, Ji-Yong,Yoon, Hong-Kwon,Nam, Dae-Cheol 대한족부족관절학회 2013 대한족부족관절학회지 Vol.17 No.3
Purpose: We investigated a statistical difference of tibial-articular surface (TAS) angles between radiographs of standing ankle anteroposterior (AP) and whole lower extremity view, and evaluated whether the tibial axis obtained from the standing ankle AP view reflects the original mechanical axis of lower extremity. Materials and Methods: Both the standing ankle AP and whole lower extremity view were taken from 60 legs of 30 healthy volunteers without a history of ankle surgery or deformity of lower limb. To determine the tibial axis, Takakura's and Hintermann's method were employed in the standing ankle AP view. To compare these results with the original TAS angle, ANOVA and multiple comparison test were used. Results: The mean TAS angle was 88.3 degrees(from hip joint to ankle), 89.5 degrees (from knee joint to ankle), 88.5 degrees (Takakura's method), and 90.2 degrees(Hintermann's method). Although there was a statistical significance (p=0.000) between these results, Takakura's method had no significant difference, compared to the results of whole extremity view by the multiple comparison test. Conclusion: The tibial axis obtained by Takakura's method reflects the original mechanical axis of lower extremity. When a surgical procedure is planned, however, it is necessary to consider that the ankle radiographs do not provide any information on the proximal deformity without the whole lower extremity view.
박진성,김홍주,정주영,Park, Jin-Sung,Kim, Hong-Joo,Chung, Ju-Young 대한소아소화기영양학회 2009 Pediatric gastroenterology, hepatology & nutrition Vol.12 No.2
위석은 위장관계에 흡수되지 않는 이물질들이 축적, 응고되어 점점 그 크기가 증가하여 덩어리를 이룬 것을 말하며, 위장관계 폐색을 일으키거나, 진단이 늦어져 만성 복통의 원인이 되기도 한다. 그 중 모발석의 경우는 발모벽과 모식증의 과거력이 흔히 동반된다. 저자들은 담즙성 구토와 복부 산통 때문에 방문한 8세 여아에서 진단된 소장의 모발석 1예를 경험하여 문헌 고찰과 함께 보고한다. Trichobezoars are commonly found within the stomach, but rarely induce small bowel obstruction. We report an 8-year-old girl who presented with bilious vomiting and colicky abdominal pain. She had a history of depression and trichophagia. A diagnosis of small bowel obstruction was made on computed tomography and a trichobezoar in the ileum was evacuated by exploratory laparatomy.
$\textrm{SiO}_2$를 첨가한 $\textrm{Cr}_2\textrm{O}_3$의 전기전도도
박진성,이은구,이우선,문종하,Park, Jin-Seong,Lee, Eun-Gu,Lee, U-Seon,Mun, Jong-Ha 한국재료학회 1997 한국재료학회지 Vol.7 No.7
SiO$_{2}$를 첨가한 Cr$_{2}$O$_{3}$의 전기전도도와 미세구조를 산소분압, 온도, 그리고 SiO$_{2}$첨가량에 따라 측정하였다. 입자직경은 1$\mu\textrm{m}$보다 작다. 순수한 Cr$_{2}$O$_{3}$의 전기전도도는 산소분압과 온도가 증가함에 따라 증가하였으며 110$0^{\circ}C$부터 진성 영역이 나타났다. Cr$_{2}$O$_{3}$의 전기전도도는 SiO$_{2}$첨가로 감소하지만, 산소분압에 따른 변화는 SiO$_{2}$첨가와 무관하다.
$\textrm{Li}_2\textrm{ZrO}_3$ 계를 이용한 $\textrm{CO}_2$ 가스 센서
박진성,김시욱,이은구,김재열,이현규,Park, Jin-Seong,Kim, Si-Uk,Lee, Eun-Gu,Kim, Jae-Yeol,Lee, Hyeon-Gyu 한국재료학회 1999 한국재료학회지 Vol.9 No.9
이산화탄소 기체센서를 Li$_2$ZrO$_2$계에서 온도와 $CO_2$농도의 함수로서 연구했다. Li$_2$ZrO$_3$를 열처리해서 합성했다. 시편은 직경 10mm, 두께 1mm의 벌크형과 알루미나 기판 위에 후막형으로 각각 제조했다. Li$_2$ZrO$_3$는 45$0^{\circ}C$에서 $650^{\circ}C$의 온도 범위에서 0.1%에서부터 100%까지 이산화탄소 농도 변화를 감지한다. 이산화탄소 감도는 측정온도와 연관성이 있다. Li$_2$ZrO$_3$는 45$0^{\circ}C$에서 $650^{\circ}C$의 온도 범위에서 $CO_2$와 반응해서 Li$_2$CO$_3$와 ZrO$_2$로 분해된다. $650^{\circ}C$ 이상에서 Li$_2$CO$_3$는 Li$_2$O와 $CO_2$로 재분해된다. Li$_2$ZrO$_3$센서의 재현성은 좋지 않았고, 동작온도는 55$0^{\circ}C$ 정도가 적당하였다. A carbon dioxide gas sensor was studied as a function of temperature and $CO_2$concentration in the Li$_2$ZrO$_3$ system. Lithium zirconate(Li$_2$ZrO$_3$) was synthesized by the heat-treatment of zirconia(ZrO$_2$)and Lithium carbonate(Li$_2$CO$_3$). The specimens were prepared both as bulk disk, 10mm in diameter and 1.0mm thickness, and thick films on an alumina substrate. Lithium zirconate readily responded to $CO_2$concentration from 0.1% to 100% in the range of 45$0^{\circ}C$ to $650^{\circ}C$. The sensitivity to $CO_2$ was dependent on the measuring temperature. Lithium zirconate(Li$_2$ZrO$_3$) decomposes into Li$_2$CO$_3$ and ZrO$_2$after the reaction with $CO_2$in the range of 45$0^{\circ}C$ to $650^{\circ}C$. Li$_2$CO$_3$ changes into Li$_2$O and $CO_2$ above $650^{\circ}C$. The material showed difficulty with reversibility and recovery. The optimum temperature for the highest sensitivity is around 55$0^{\circ}C$.
근시성 맥락막 신생혈관 환자에서 스펙트럼 영역 빛간섭단층촬영으로 측정한 맥락막
박진성,조영욱,장지혜,Jin Sung Park,Young Wook Cho,Ji Hye Jang 대한안과학회 2014 대한안과학회지 Vol.55 No.9
Purpose: Using the spectral domain optical coherence tomography (SD-OCT), we studied the difference in the choroidal morphology between the choroidal neovascularization (CNV) area and the area surrounding CNV. Methods: This retrospective study consisted of 19 patients with myopic CNV lesion in eye; fellow eyes were used as controls. All eyes were analyzed by measuring the choroidal thickness and large choroidal vessel size using SD-OCT. Eyes with CNV were divided into groups; the neovascular lesion was defined as group 1, the surrounding area as group 2. Subfovea of the fellow eye was defined as group 3. Results: The choroidal thickness was 80.00 ± 68.31 in group 1, 63.44 ± 67.75 in group 2 and 71.11 ± 65.69 μm in group 3. There was a significant difference between group 1 and group 2 (<em>p</em> = 0.038). There were no significant differences between group 1 and 3 or between group 2 and 3 (<em>p</em> = 0.365, p = 0.314). The large choroidal vessel size was 57.47 ± 39.78 in group 1, 40.45 ± 34.69 in group 2 and 45.63 ± 37.00 μm in group 3. There was a significant difference between group 1 and group 2 (<em>p</em> = 0.025). There were no significant differences between group 1 and 3 or between group 2 and 3 (<em>p </em>= 0.123, <em>p</em> = 0.325). Conclusions: Choroidal thickness and large choroidal vessel size at the center of the CNV were greater than in the area surrounding CNV. The results suggest that although the CNVs were due to a thinned choroid caused by severe choroidal ischemia, the development of CNV requires maintenance of choriocapillaris and large choroid vessels. J Korean Ophthalmol Soc 2014;55(9):1313-1319
EMMI(Emission Microscope)와 FIB(Focused Ion Beam)를 이용한 Thin Oxide 불량분석
박진성,이은구,이현규,이우선,Park, Jin-Seong,Lee, Eun-Gu,Lee, Hyeon-Gyu,Lee, U-Seon 한국재료학회 1996 한국재료학회지 Vol.6 No.6
MOS 소자의 얇은산화막(thin oxide)불량을 화학적으로 식각하지 않고 불량부위를 광전자방사(photon emission)반응을 이용하여 위치를 확인하고, 이곳을 FIB로 절단하여 불량부위의 단면을 관찰했다. 20nm 두께의 SiO2불량은 셀(cell)영역의 위치에 따른 의존성은 없고, 불량은 저전계의 입자(particle)성 불량과 중간전계의 Si 기판 핏(pit)과 관련된 불량이 주였다. 고전계에서는 전형적인 SiO2 산화막의 절연파괴가 일어난 것이 관찰된다.
아연 및 알루미늄이 도금된 Hot-Press Forming 강의 염화물 환경 내 전기화학적 부식 및 수소확산거동
박진성,이호종,김성진,Park, Jin-seong,Lee, Ho Jong,Kim, Sung Jin 한국재료학회 2018 한국재료학회지 Vol.28 No.5
Hot-press forming(HPF) steel can be applied successfully to auto parts because of its superior mechanical properties. However, its resistances to aqueous corrosion and the subsequent hydrogen embrittlement(HE) decrease significantly when the steel is exposed to corrosive environments. Considering that the resistances are greatly dependent on the properties of coating materials formed on the steel surface, the characteristics of the corrosion and hydrogen diffusion behaviors regarding the types of coating material should be clearly understood. Electrochemical polarization and impedance measurements reveal a higher corrosion potential and polarization resistance and a lower corrosion current of the Al-coating compared with Zn-coating. Furthermore, it was expected that the diffusion kinetics of the hydrogen atoms would be much slower in the Al-coating, and this would be due mainly to the much lower diffusion coefficient of hydrogen in the Al-coating with a face-centered cubic structure. The superior surface inhibiting effect of the Al-coating, however, is degraded by the formation of local cracks in the coated layer under severe stress conditions, and therefore further study will be necessary to gain a clearer understanding of the effect of cracks formed on the coated layer on the subsequent corrosion and hydrogen diffusion behaviors.