갑상선 질환에서의 부여포세포 표현 양상

기근홍,이학봉,신은택 조선대학교 부설 의학연구소 1998 The Medical Journal of Chosun University Vol.23 No.2

The parafollicular C cell is a neuroendocrine cells in the thyroid gland. It secrete the calcitonin and regulate the serum level of calcium. The materials for this study consisted of 20 cases of adenomatous goiter 10 chronic lymphocytic thyroiditis, 5 Hashimoto's thyroiditis, 10 follicular adenoma, 20 papillary carcinoma, and 5 follicular carcinoma that resected for definite treatment of thyroid disease at Chosun University Hospital from January, 1995 to December, 1998. All cases were performed of immunohistochemical stain for antimouse monoclonal calcitonin, chromogranin A and neuron-specific enolase (NSE) antibodies. The result obtained as follows. Immunohistochemically, the positive cells for calcitonin, chromogranin A and calcitonin were increased and intensely stained in the chronic lymphocytic thyroiditis and Hashimoto's thyroiditis. In the follicular adenoma, papillary carcinoma and follicular carcinoma, the C cells were increased around the tumor cell nests. But, the tumor cells showed negative staining. In conclusion, the calcitonin-producing neuroendocrine cells were showed in most thyroid diseases and were increased in inflammatory diseases. This finding suggest that the neuroendocrine cells act as protection to injurious agents or neoplastic transformation.

결정 성장 방법에서 황산 농도가 황산 칼슘 결정 형태 및 법랑질과 복합 레진의 결합 강도에 미치는 영향

은희춘,구기갑,임호남 대한치과기재학회 1999 대한치과재료학회지 Vol.26 No.1

The calcium sulfate dihydrate(gypsum) crystal morphology on enamel surface treated by sulfuric acid aqueous solution (from 0.1M to 1.0M) was observed by scanning electron microscope. The shear bond strength between enamel and composite resin was measured by universal testing machine. From the experimental results, the conclusions of this study were; (1) The shear bond strength between enamel and composite resin was maximum at 0.1M sulfuric acid. The shear bond strength was decreased to 0.3M, hardly bonded from 0.4M to 0.6M, and increased from 0.7M as increasing sulfuric acid concentration. (2) The crystals was disordered as increasing sulfuric acid concentration. (3) The crystals formed by sulfuric acid aqueous solution were not firmly bonded on enamel surface because only crystal nuclei were attached on enamel, so fracture was occurred between enamel and crystal interface.

염증성 근섬유모세포종의 증례보고

은상아,박혁,차인호,김현실,정호걸,김기덕,박창서 대한구강악안면방사선학회 2006 Imaging Science in Dentistry Vol.36 No.3

The inflammatory myofibroblastic tumor (inflammatory pseudotumor) is a rarely occurring soft tissue lesion of unknown etiology. It can be of any location, but commonly it is found in lungs. It has been considered as a nonneoplastic reactive inflammatory lesion, but nowadays, confusion and dispute about its character is increasing due to its high recurrence rate and metastasis. We present a patient who had been diagnosed with an inflammatory pseudotumor in the right maxilla area, 1 year before visiting our hospital. After that, her pain and swelling did not resolved and she visit our hospital. On radiographic examination, aggressively infiltrative growth of the lesion with destruction of adjacent bony structure was noted. We found unusual aggressiveness of the inflammatory myofibroblastic tumor of the head and neck region. Because the typical behavior of the inflammatory myofibroblastic tumor is not defined yet, we recommend the surgical excision of the lesion and close follow-up.

近距離 寫眞測量의 測定精度에 關한 硏究

白殷基 서울市立大學校 1986 論文集 Vol.20 No.1

In this paper influence factors on accuracy in close range photogrammetry are illustrated, in which lighting problem and interior orientation of a camera are dealt. The results of experiments about a metal surface shows that sticking of control points of the surface and lighting by paper sheet, and interior orientation by small adjustment of camera elements-principal points and principal distances are effective.

航空寫眞測量의 費用모델에 關한 考察 : 細部圖化에 關하여

白殷基,金淵東 서울市立大學校 1985 論文集 Vol.19 No.-

The cost of executing a photogrammetric projects and the quality of the resulting products depend considerably on the quality of planning. Accordingly we need scientific and systematic treatments to make an effective and good planning. Cost models are needed for the systematic treatment of this very important problem to obtain an efficient and optimum planning of photogrammetric projects. Cost models are functions of basic cost standards and production standards. Basic cost standards have been fairly well established. But it's very difficult in determining production standards for the total process of a photogrammetric plotting phase and fair drawing phase. The major factors in the output of mapping for the given scales are the amount of planimetric and altimetric details. It's the most dominant factors that have influence on cost models. Just for the above reasons have been taken up the problem.

조기 양막 파수 신생아에 대한 임상적 연구

양은석,김강호,박상기,나창수 朝鮮大學校 附設 醫學硏究所 1989 The Medical Journal of Chosun University Vol.14 No.1

A clinical study was made on 157 newborns of mothers with premature rupture of membranes (study group) and 916 newborns of mothers without rupture of membranes (control group) at Chosun University Hospital from Jaunary 1987 to Decembcr 1988. The results were as follows: 1) The incidence of PROM was 14.6%. 2) 10.2% of all babies with PROM were born prematurely, significantly higher than the incidence of PROM in all newborn cases with 4.8% (P<0.005). 3) The incidence of neonatal sepsis in the PROM group (4.5%) was four times higher than in the normal group(1.1%) (P<0.005). The incidience was related to the gestational age at birth, and also increased with increasing time interval after PROM. 4) The incidence of neonatal asphyxia in PROM group (7.6%) was twice the normal group (3.6%) (P<0.025). The premature babies had greater incidence in both groups. Also, a positive correlation was found with increasing time interval PROM. 5) Neonatal respiratory distress syndrome(RDS) was found in 1.3% of babies with PROM, whereas 1.4% of babies in the normal group had the syndrome. Premature babies had higher incidence of RDS in both normal and PROM groups, but the latter had an incidence amounting the only 1/5 of the former. And it tended to diminish with creasing time interval after PROM.

구강내에서 재광화용액 "R"의 법랑질 초기 우식병소에 대한 재광화의 정량적 평가

김명은,정일영,금기연,이찬영,노병덕 大韓齒科保存學會 2002 Restorative Dentistry & Endodontics Vol.27 No.2

Dental caries is a chronic disease that causes the destruction of tooth structure by the interaction of plaque bacteria, food debris, and saliva. There has been attempts to induce remineralization by supersaturating the intra-oral environment around the surface enamel, where there is incipient caries. In this study, supersaturated remineralized solution "R" was applied to specimens with incipient enamel caries, and the quantitative ananlysis of remineralization was evaluated using microradiography. Thirty subjects volunteered to participate in this study. Removable appliances were constructed for the subjects. and the enamel specimen with incipient caries were embedded in the appliances. The subjects wore the intra-oral appliance for 15 days except while eating and sleeping. The removable appliance were soaked in supersaturated solution "R", saline, or Senstime® to expose the specimen to those solutions three times a day, 5 minutes each time. After 15 days, microradiography was retaken to compare and evaluate remineralization. The results were as the following: 1. The ratio of remineralized area to demineralized area was significantly higher in the supersaturated solution "R" and Senstime® than in the saline (p<0.05) 2. Remineralization in the supersaturated buffer solution "R" occurred in the significantly deeper parts of the tooth, compared to the Senstime® group containing high concentration of fluoride.(p<0.05) As in the above results, the remineralization effect of remineralized buffer solution "R" on incipient enamel caries has been proven. For clinical utilization, further studies on soft tissue reaction and the effect on dentin and cementum are necessary. In conclusion compared to commercially available fluoride solution, remineralization solution "R" showed better remineralization effect on early enamel caries lesion. so it is considered as effecient solution for clinical application

Ebb and Flood System을 이용한 팔레높시스 양액 재배에서 배양액 농도에 따른 묘 생육 및 양분흡수 패턴

한은주,최영일,백기엽 충북대학교 첨단원예기술개발연구센터 1999 연구보고서 Vol.4 No.-

일관성 광대역 정합장처리에 의한 수중 이동음원의 위치추적

신기철,박재은,김재수 韓國海洋大學校 附設 海洋科學技術硏究所 2002 硏究論文集 Vol.11 No.2

최근 수중음향에 대한 관심은 천해와 같은 복잡한 음파의 상호작용과 경계조건이 부정확한 해양환경으로 이동하고 있다. 천해 음향전파에 의해서 발생하는 어려움을 극복하기 위한 방법으로 음원의 광대역 스펙트럼에서 얻어지는 정보를 사용하여 견고성과 신뢰성을 증가시키는 광대역 정합장처리 기법이 사용된다. 본 논문에서는 협대역에서의 음장의 공간 일관성을 확장하여 다중 주파수를 사용한 주파수-공간 일관성 광대역 프로세서를 제안하였고, 이 프로세서를 실제 광대역 이동음원에 적용하여 음원위치추적을 수행하였다. 제안된 일관성 프로세서는 음원의 정위치 추정확률이 높았으며, 특히 정합장출력의 부엽준위에서 비일관성 프로세서와 비교해 일관성 프로세서가 상당히 낮은 준위를 나타내었다. The shallow-water environment presents additional challenges arising from the complex interaction patterns of the sound with the sea bed. In order to overcome the difficulties generated by shallow-water propagation, broad-band matched field processing has been employed in an effort to increase robustness by utilizing multiple frequency information. In this paper, a coherent broad-band matched field processor is introduced that incorporates the spatial coherence of the acoustic field not only over one frequency but across frequencies. The incoherent and coherent processors are applied to the experimental data where it is shown that both processors give a high probability of correct localization. Also it is found that a coherent processor has better performance in the sidelobe pattern of ambiguity surfaces.

한국어 판 WHO-CIDI(Composite International Diagnostic Interview)-Alcohol의 개발:신뢰도 및 타당도 검사

남궁기,유계준,조은영,송선미,이희상,길계선,조현상,우용일 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.6

CIDI-Alcohol의 한국어 판 개발을 위해 이를 우리말로 번역, 수정하고, 정신병원에 입원한 환자 90명과 일반인 50명에게 시행한 후 임상 진단과 비교하여 일치도를 봄으로써 그 신뢰도 및 타당도를 조사하였다. 결과는 다음과 같다. 1) 주정 사용 각 진단 범주에 대한 한국어 판 CIDI-Alcohol의 일반 면담자간 진단 일치도는 97%∼100%의 높은 일치도를 보였다. 2) 임상 진단을 기준으로 한 한국어 판CIDI-Alcohol의 주정 사용 장애의 진단 일치도는 각 진단 범주별로 kappa치가 0.43∼0.55로 기존의 연구에 비해 비교적 낮았다. 3) CIDI-Alcohol의 진단 기준을 변화시켜, 각 진단 범주에 대한 임상 진단과의 일치도를 알아본 결과 ICD-10/harmful use는 진단 기준 항목의 수를 2개 이상으로 하였을 때, DSM-Ⅲ-R/주정 의존은 진단 기준 항목의 수를 4개 이상으로 하였을 때 임상 진단과 가장 일치하였다. 이런 결과는 한국어 판 CIDI-Alcohol의 진단 기준이 대체적으로 민감도는 높으나, 특이도가 떨어지는 것으로 생각할 수 있으며, 따라서 본 연구자들에 의해 작성된 한국어 판 CIDI-Alcohol는 일반인구 집단을 대상으로 하는 역학 조사보다는 주정 사용 장애로 이루어진 순수한 실험군의 연구에 적합하다고 생각된다. he authors translated a CIDI-Alcohol, a highly structured diagnostic interview, into Korean and examined the validity and reliability of the Korean version of CIDI-Alcohol. In order to examine the validity and reliability of CIDI-Alcohol, the authors calculated the degree of agreement of CIDI-Alcohol diagnoses between the two lay interviewers and sensitivity, specificity, kappa coefficient between clinical and lay CIDI-Alcohol diagnoses. The results were as follows: 1) Agreement rates of CIDI-Alcohol diagnoses between the two lay interviewers ranged from 97% to 100%. The kappa coefficient for each diagnosis was quite high(0.96-1.0). 2) The kappa value of agreement between clinical and lay CIDI-Alcohol diagnoses ranged from 0.43 to 0.55, which was lower than those of other studies. 3) With canging the diagnostic criteria of CIDI-Alcohol, The highest agreement rate between clinical and CIDI-Alcohol diagnoses was acquired when the authors used two or more diagnostic criteria of ICD-10/harmful use and four or more diagnostic criteria of DSM-Ⅲ-R/ alcohol dependence.