• 멤브레인
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• 제15권2호
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• pp.105-113
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• 2005

표면 개질한 다공성 금속 지지체에 초음파 분무 열분해법을 이용하여 silica막을 합성하고, 고온 기체 선택 투과 분리 특성을 조사하였다. Tetraethyl orthosilicate (TEOS)를 전구체로 하여 지지체 세공을 통한 감압 진공을 하면서 873K에서 표면에 defect 없이 균일한 양질의 silica막이 형성되었다. 투과 온도 523 K에서 silica막의 수th/질소 및 수증기/메탄을 분리 계수가 각각 17 및 16 정도의 우수한 선택 투과 성능을 나타냈다. 다공성 금속 지지체의 불균일한 기공에 silica 분체 및 $\gamma-alumina$층을 중간층으로 도입하고, 그 위에 열분해법에 의한 silica를 합성한 결과, Knudsen 확산에 의한 투과 영역의 세공이 완전히 제거되어 높은 수소 및 수증기 선택성을 가지는 복합 막이 형성되었다.

• Journal of Periodontal and Implant Science
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• 제42권4호
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• pp.127-135
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• 2012

Purpose: The aim of this study was to compare the clinical outcome of open flap debridement (OFD) with a biphasic calcium phosphate (BCP) graft to that of OFD without BCP graft for the treatment of intrabony periodontal defects (IBDs). Methods: The study included 25 subjects that had at least one intrabony defect of 2- or 3-wall morphology and an intrabony component ${\geq}4$ mm as detected radiographically. Subjects were randomly assigned to treatment with (BCP group, n=14) or without BCP (OFD group, n=11). Clinical parameters were recorded at baseline and 6 months after surgery and included the plaque index, gingival index, probing depth (PD), clinical attachment level (CAL), and gingival recession (REC). A stringent plaque control regimen was enforced for all of the patients during the 6-month observation period. Results: In all of the treatment groups, significant PD reductions and CAL gains occurred during the study period (P<0.01). At 6 months, patients in the BCP group exhibited a mean PD reduction of $3.7{\pm}1.2$ mm and a mean CAL gain of $3.0{\pm}1.1$ mm compared to the baseline. Corresponding values for the patients treated with OFD were $2.5{\pm}0.8$ mm and $1.4{\pm}1.0$ mm, respectively. Compared to OFD group, the additional CAL gain was significantly greater in the patients in BCP group (P=0.028). The additional PD reduction was significant for the BCP group (P=0.048). The REC showed a significant increase in both groups, and the amount of recession was significantly smaller in the BCP group than OFD group (P=0.023). In radiographic evaluation, the height of the bone fill in the BCP group was significantly greater than OFD group. Conclusions: The clinical benefits of BCP found in this study indicate that BCP may be an appropriate alternative to conventional graft materials.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제34권5호
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• pp.367-375
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• 2012

Midfacial reconstruction following resection of extensive malignant oral cavity tumors constitutes a challenging problems for reconstructive surgeons. Rectus abdominis muscle free flap (RAMFF) can be considered as the optimal reconstructive option in this case, because this flap has some advantages including consistent deep inferior epigastric artery anatomy, easy to dissect with well defined skin boundaries, acceptable donor site morbidity and the ability to perform simultaneous flap harvest with oral cancer ablation surgery. The rectus abdominis muscle forms an important part of the anterior abdominal wall and flexes the vertebral column, which is a long strap-like muscle divided transversely by three tendinous intersections, fibrous bands which are adherent to the anterior rectus sheath, which is thickly enclosed by the rectus sheath, except for the posterior part below the arcuate line that is usually located midway between the umbilicus and symphysis pubis. Below the arcuate line, this muscle lies in direct contact with the transversalis fascia and parietal peritoneum. For the better understanding of RAMFF as a routine reconstructive procedure in oral and maxillofacial surgery, the constant anatomical findings muse be learned and memorized by the young doctors in the course of the special curriculum periods for the Korean national board of oral and maxillofacial surgery. This review article will discuss the anatomical basis of RAMFF with Korean language.

• Journal of Yeungnam Medical Science
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• 제23권2호
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• pp.240-246
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• 2006

미세절단기를 이용한 내시경 수술이 기존의 부비동 내시경 수술에 비해 출혈이 적고 수술 시간도 단축되는 장점들이 있어 선호되고 있지만, 안와나 뇌 등의 중요 구조물에 심각한 합병증들을 발생시키기도 한다. 저자들은 만성 부비동염으로 부비동 내시경 수술 중 미세절단기에 의해 지판과 내직근 손상으로 인해 심한 복시와 외측 편위가 있었던 50세 여자 환자를 경험하였기에 문헌 고찰과 함께 보고한다. 환자는 부비동 내시경 수술 중 미세절단기에 의해 좌측 내직근 손상으로 인해 안구운동 검사상 안검연의 중심부를 통과하지 못하는 심한 내전장애 소견을 보였으며 편위각은 40 프리즘디옵터의 외사시를 나타내었다. 전산화 단층촬영상 좌측의 안와 내측벽의 손상으로 안와 지방의 노출과 좌측 내직근이 손상된 소견을 볼 수 있었다. 안구의 심한 외측 편위와 지속적인 복시는 안과적 수술을 시행하여 교정하였다.

• 한국정보통신학회논문지
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• 제21권5호
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• pp.861-868
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• 2017

도핑 되지 않은 반 절연 LEC GaAs내의 EL2와 얕은 준위 분포를 영상화하기 위해 대역단 적외선 영상 기법을 활용했다. 대역단 적외선 투사 매핑에 근거한 본 기법은 분석 속도가 빠르고 비파괴적인 방법이다. EL2 흡수 영상이 콘트라스트 반전되는 대역단 부근에 대한 정량적인 해석은 아직 보고되지 않고 있다. 본 논문은 대역단 부근에서 영상의 특정 부분(cell, wall)에 대한 포토퀀칭 메커니즘의 스펙트럼-, 공간- 및 온도- 종속성을 논하고 있다. 결함 부분별(EL2w, EL2b)로 포토퀀칭 개시점이 다른 것은 불순물 종류의 차이로 인한 서로 다른 전기적 작용에 기인한 것으로 해석할 수 있다. 전위(dislocation) 밀도가 높은 곳에서는 EL2b 밀도는 약간 적은 반면 EL2w 밀도는 보다 많다는 것을 정량적 해석으로부터 확인 했다.

• Archives of Reconstructive Microsurgery
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• 제11권2호
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• pp.141-145
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• 2002

Rectus abdominis muscle free flap is widely used for breast reconstruction and soft tissue defect in lower leg but donor-site morbidities such as abdominal wall weakness, hernia, bulging are troublesome. Recently, to minimize donor-site morbidity, there has been a surge in interest in deep inferior epigastric perforator(DIEP) free flap preserving the anatomy of rectus abdominis muscle, fascia, and motor nerve. Between August of 1995 and September of 2002, topographic investigation of DIEP was performed during the elevation of 97 cases of TRAM free flap and 5 cases of DIEP free flap. There were 84 cases of breast reconstructions, 12 cases of lower leg reconstructions, and 6 cases of head and neck reconstruction. We could observe total 10 to 12 perforators on each rectus abdominis muscle below umbilicus. Among these, the numbers of large perforators(>1.5mm of diameter) were mean 2.1 in lateral half of rectus abdominis muscle, mean 1.2 in medial half, and mean 0.5 in linea alba and paramedian. DIEP free flap provides ample amount of well vascularized soft tissue without inclusion of any rectus abdominis muscle and fascia and minimizes donor-site morbidity. One perforator with significant flow can perfuse the whole flap. For large flap, a perforator of the medial row provides better perfusion to zone-4 than one of lateral row and, if diameter of perforator is small, $2{\sim}3$ perforators can be used. According to the condition of recipient-site, thin flap can be harvested. As DIEP free flap has many advantage, perforator topography will be useful in increasing clinical usage of DIEP free flap.

• 한국임상수의학회지
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• 제37권2호
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• pp.91-95
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• 2020

A 13-year-old, intact male, Yorkshire terrier dog with oliguria and hematuria was presented to the Small Animal Clinic at the Gyeongsang National University animal medical center. There were no remarkable findings on serum chemistry values and complete blood counts. Abdominal radiographs revealed mild elevation of the descending colon at the pelvic level. On the excretory urographic images, a large filling defect was identified in urinary bladder with narrow urinary bladder wall contact and there were no remarkable findings in kidneys and ureters. The abdominal ultrasonography revealed that an irregularly marginated, heterogeneous mass in urinary bladder, central cavitary lesion and mild vascular flow were also observed. Computed tomography showed a heterogeneously attenuated mass within urinary bladder. The mass was surgically excised, and leiomyosarcoma was confirmed by histopathological examination. The patient was followed up for two months and there were no complications. This case is of interest because of the unusual findings of leiomyosarcoma of urinary bladder in a small breed dog.

• 미생물학회지
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• 제37권1호
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• pp.42-48
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• 2001

출아 효모인 Saccharomyces cerevisiae의 베타-1,3-글루칸 생합성의 결함을 초래하는 돌연변이 유전자(sool-1)를 분리하여 돌연변이 부위의 염기서열을 결정하고 그 특성을 분석하였다. cool-1 유전자의 염기서열 분석 결과, 681번의 염기인 G가 A로 치환되어 Soolp의 $Gly^{227}$이 Asp로 치환되는 결과를 나타내는 것으로 판명되었고, cool-1 유전자는 기존에 보고된 retl-1 유전자와 동일한 돌연변이 유전자로 판명되었다. 그러나, ret1-1이 나타내는 온도감수성 형질은 배지에 1.2 M sorbitol 등의 삼투안정제를 첨가하면 극복될 수 있으며, cool-l/retl-1의 돌연변이 부위가 세포벽합성 관련 단백질의 번역 후 수식과정에 영향을 미친 것임을 확인하였다. 한편, Soolp/$\alpha$-COP의 N-말단에 존재하는 6개의 WD40 domain중 5번째 WD40 domain이 효모의 세포벽 합성이나 구조유지에 중요한 역할을 담당할 것임을 시사하는 결과를 얻었다.

• Journal of Yeungnam Medical Science
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• 제2권1호
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• pp.249-252
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• 1985

63세의 남자에서 하부요로폐쇄를 일으킨 전립선부 요도폴립 1례를 치험하였기에 문헌고찰과 함께 보고하는 바이다.

• Advances in pediatric surgery
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• 제2권1호
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• pp.26-32
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• 1996

To understand the current status of neonatal surgery in Korea, a survey was made among the 27 members of Korean Association of Pediatric Surgeons. Response rate among surgeons was 78 percent, eighteen hospitals participated in this study. Five hundred and three cases of neonatal surgical patients were analyzed. In Korea, about 50% of cases were treated at the hospital in the capital city area. Regional number of patients were closely related to the regional population. Imperforate anus(19%), atresia/stenosis of gut(12%), and Hirschsprung's diseases(12%) were sitting at the top in the list. Majority of operation was done within the first week of life, especially during the first 24 hour period. Eighty per cent was major or so called index cases. Mortality in so-called index cases was 17%. High mortality was observed in patients with diaphragmatic hernia(47%), gastrointestinal perforation(65%) and esophageal atresia(28%). Low birth weight babies showed higher mortality in gastrointestinal perforation, esophageal atresia and abdominal wall defect. These were compared to 1993 survey of Japanese Society of Pediatric Surgeons.