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이인석,김설영,장혜원,김민경,이주희,이윤형,조영석 대한의학회 2010 Journal of Korean medical science Vol.25 No.9
Glucocorticoid-remediable aldosteronism (GRA) is an autosomal-dominant inheritable form of hyperaldosteronism with early onset hypertension. GRA is caused by unequal crossing-over of the steroid 11β-hydroxylase (CYP11B1) and aldosterone synthase (CYP11B2)genes. As a result of chimeric gene duplication, aldosterone is ectopically synthesized in the adrenal zona fasciculata under the control of adrenocorticotropin. Here, we describe three cases of GRA in a Korean family. The proband-a 21-yr-old female-was incidentally found to have high blood pressure (170/108 mmHg). Her 46-yr-old father had been treated twice for cerebral hemorrhage at the ages of 29 and 39 yr. Her 15-yr-old brother had a 2-yr history of hypertension; however, he was never treated. Their laboratory test results showed normokalemia, hyporeninemia, hyperaldosteronism, and a high plasma aldosterone concentration-to-plasma renin activity ratio. Normal saline loading failed to suppress aldosterone secretion. However, dexamethasone administration effectively suppressed their plasma aldosterone concentrations. Following genetic analyses with PCR and direct sequencing to document the chimeric gene and crossover site, respectively, we identified CYP11B1/CYP11B2 and determined the breakpoint of unequal crossover to be located between intron 2 of CYP11B1 and exon 3 of CYP11B2.
이인석,김병수,김응태,성기정 한국항공우주학회 2014 한국항공우주학회 학술발표회 논문집 Vol.2014 No.4
자세 제어용 MEMS IMU를 사용하여 구성한 INS/GPS 시스템을 한국항공우주원의 비행시험용 항공기에 탑재하여 자세추정 성능을 평가하였다. INS/GPS시스템은 ECEF좌표계를 기반으로 구성되었으며 GPS와는 약결합으로 융합되어 있고, 지자기센서와 기압고도계도 시스템과도 융합할 수 있다. 시험을 통해 오차 보정이 되지 않은 지자기센서의 융합은 INS/GPS의 자세추정 성능에 심각한 악영향을 미침을 알 수 있었다. 지자기센서의 융합이 없어도 기동에 의해 요각의 추정오차는 2deg내로 유지할 수 있었고 롤각과 피치각 오차는 모든 비행조건에서 0.17deg내로 제한됨을 알 수 있었다. An INS/GPS System is developed with MEMS IMU used for attitude control. The INS/GPS system is loosely coupled with GPS and could be fused with a magnetic compass and a baroaltimeter. The developed INS/GPS is boarded in KARI’s flight test airplane to evaluate performance. The flight test shows that a fusion with a magnetic compass without compensating hard-iron and soft-iron effects makes the attitude estimation performance worse. Maneuvers of airplane bounds the yaw angle error within 2 deg without fusion of magnetic compass. Roll and pitch angle error is bound in 0.17deg in all flight envelope.
이인석,윤지언,김상지,손영국,Lee, In-Seok,Yoon, Ji-Eun,Kim, Sang-Jih,Son, Young-Guk 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.1
PLZT thin films were deposited on platinized silicon (Pt/$TiSiO_2$/Si) substrate by RF magnetron sputtering. A $TiO_2$ buffer layer was fabricated, prior to deposition of PLZT films. the layer was strongly affected the crystallographic orientation of the PLZT films. X-ray diffraction was performed on the films to study the crystallization of the films as various substrate temperatures (Ts). According to increasing Ts, preferred orientation of films was changed (110) plane to (111) plane. The ferroelectric, dielectric and electrical properties of the films were also investigated in detail as increased substrate temperatures. The PLZT films deposited at $400^{\circ}C$ showed good ferroelectric properties with the remnant polarization of $15.8{\mu}C/cm^2$ and leakage current of $5.4{\times}10^{-9}\;A/cm^2$.
이인석,김동섭,이상재,송회섭,임용표,이영일,Lee, In-Sok,Kim, Dong-Sub,Lee, Sang-Jae,Song, Hi-Sub,Lim, Yong-Pyo,Lee, Young-Il 한국식물생명공학회 2003 식물생명공학회지 Vol.30 No.1
Radiation technique in agriculture was initiated to develop mutant rice. Seeds of Daechungbyeo rice were irradiated with 250 Gy gamma ray for the purpose of inducing and selecting rice variants. Some quantitative traits of the variants in M$_{8}$ generation were evaluated and RAPD analysis was carried out. Variants showed a wider range of agronomic characteristics in both a positive and a negative direction compared with their original variety. The new mutants were characterized by an increased or decreased in plant height, lodging resistance and shorter panicle. RAPD analysis showed that polymorphic bands were presented in most of the primers. In comparison with the original variety, variants were classified into four groups through UPGMA analysis. Among mutants no. 91, 139, 140 and 141 was ranked as salt tolerance and the proline content of these mutants was more increased than that of original variety. The lines of 139, 140 and 141 had the highest genetic distance as compared to original variety in the dendrogram. It is expected that such variants will be useful not only for studying molecular genetics but also for breeding research and genetic analysis.s. 본 실험은 방사선 처리에서 유기된 벼 변이계통의 몇 가지 농경 형질 분석 및 RAPD 분석을 통하여 방사선 이용 돌연변이 육종연구를 위한 기초적인 자료를 얻기 위하여 실시하였다. 1. 방사선에 의해 선발된 변이 계통의 초장, 수장 및 내도복성 형질은 모품종과 비교하여 정 (+)및 부 (-)의 방향으로 작용하였다. 2. RAPD 분석에 의해 계통 간 polymorphic band를 관찰할 수 있었고, UPGMA에 의해 변이계통를 4 groups으로 분류할 수 있었다. 3. 변이체들 중 계통 91, 139, 140 및 141은 내염성 형질을 나타냈고, 유리 proline 함량이 모품종보다 유의성 있는 증가를 나타내었다. 4. 139, 140 및 141 계통은 dendrogram에서 같은 그룹을 이루었고 모품종과 가장 먼 유전적 거리를 나타내었다. 5. 이러한 계통들은 육종 및 분자유전 연구에 유용한 재료로 이용될 수 있다.