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서준형,배효근,박다희,김범석,이종욱,이정인,김동현,이석원,서봉보 한국유전학회 2013 Genes & Genomics Vol.35 No.1
Numerous studies on Oenothera species have been investigated for the physiological and ecological characteristics. However, no such an information based on molecular cytogenetic has yet been introduced, in turn, is very essential for identifying sequence polymorphisms of rRNA genes with their loci on mitotic phases for further biological researches. In this study, sequence variations of rRNA genes in Oenothera odorata and O. laciniata were examined to identify informative factors as unique or repeat sequences in intra- and inter-specific variations. Intra-specific variation revealed that the sequences of the rRNA genes including the spacer regions were highly conserved revealing only a few variations. From the interspecific variation, spacer regions of species were completely different as (1) non-homologous sequences in NTS and (2) different type repeat sequences in ITS 1, 2 and 5.8S rRNA, whereas the remaining coding regions were highly conserved. FISH was carried out on mitotic phases using the 5S rDNA of the analyzed sequences. From the interphase and metaphase chromosomes of the examined species,two loci of 5S rDNA in O. odorata and four loci in O. laciniata were confirmed on the telomeric region of the short arm. Due to the small size and unclear centromere of the chromosomes, karyotype could not be completed. However, we confirmed that the chromosomes are organized by meta- and acrocentric chromosomes and the chromosomes with identified loci were assumed to be paired by the location of loci at the telomeric region on the short arm with relative lengths.
이경민,강문규,조희영,배효근,류형국 대한신장학회 1991 Kidney Research and Clinical Practice Vol.10 No.2
Thrombosis is one of the important complications in nephrotic syndrome. Hypercoagulability is known as the principal contributing factor in the pathophysiologic mechanism, but the precise mechanism is not clear yet. Venous thrombosis is frequently encountered, but arterial thrombosis is a relatively rare complication and has been reported mainly in nephrotic children. We are reporting a adult nephroitic patint who developed thrombosis of posterior cerebral artery. Histology of the kidney showed focal glomerulosclerosis. The patient improved with steroid therapy along with anti-platelet drug.
Diplexer 구조를 이용한 Dual Band 방향성 커플러
김기중,박자영,정영학,배효근,김남흥,김학선,Kim Ki-Joong,Park Ja-Young,Jeong Young-Hak,Bae Hyo-Gun,Kim Nam-Heung,Kim Hak-Sun 한국전자파학회 2005 한국전자파학회논문지 Vol.16 No.8
본 논문은 glass 기판 위에 RE IPD(Integrated Passive Device) 기술을 이용하여 dual band 방향성 커플러의 새로운 설계와 구현을 하였으며, 이러한 구조는 전력 증폭기의 출력부에 closed loop 전력 제 어용 GSM/GPRS cellular phones에 적용할 수 있다. 커플러는 방향성 향상을 위하여 보상 capacitor를 이용하였으며, 상호 밴드의 간섭을 최소화하기 위하여 새로운 방법의 필터링 구조(diplexer)를 갖는 커플러를 구현하였다. In this paper, a novel design and implementation of a dual-band directional coupler based on RF IPD(Integrated Passive Device)-on-glass technology is proposed, which can be adopted in GSM/GPRS cellular phones for closed loop power control at the output of the power amplifier. The proposed coupler has a compensation capacitor to improve the directivity, and was designed using a new diplexing structure to minimize the cross-band isolation.
이경민,조희영,박봉기,한형원,배효근,류형국 대한내과학회 1992 대한내과학회지 Vol.43 No.2
Reexpansion edema is a unilateral noncardiogenic pulmonary edema thnt may develop as a complication of reexpansion of collapsed lung. This complication after reexpansion of spontaneous pneumothorax is extremely rare. The possible mechanisms underlying the reexpansion edema are due to multiple factors, increased pulmonary vascular permeability is one of the primary contributing factors. Reexpansion edema is more likely to occur when the duration of collapse is at least three or more days and the extent of pneumthorax is extensive. It is recommended that rapid evacuation of air with application of a large negative intrapleural pressure be avoided. The prognosis of reexpansion edema is relatively good, but occasionally may lead to fatal outcome. We report here a case of reexpansion edema after treatment of spontaneous pneumothorax which presented serious clinical manifestations.