배양된 골수 간엽 간세포에서 골형성의 유도 및 그 표식 인자의 발현

석경수,김현우,한수봉 대한정형외과학회 골.연부조직이식학회 2003 대한골.연부 조직이식학회지 Vol.3 No.1

성장기 아동에서 Cervical Headger 사용시 골격적 변화 양상에 대한 연구

현하영,이진우,차경석 대한치과교정학회 1996 대한치과교정학회지 Vol.26 No.5

성장기 아동의 Class II 부정교합에서 과도한 성장의 억제, 미약한 성장의 촉진으로 성장 시기에 적절히 치료하는 것이 가장 효과적이며 좋은 치료 방법이다. 이러한 방법 중 가장 적절히 쓰이는 장치 중 Cervical headgear의 사용을 들수 있으며 악골에 효과적으로 적용된다. 그러나 장치의 부작용이라 할 수 있는 수직적 성장의 과잉을 볼 수 있는데 이에 대해 많은 서학들의 연구가 시행되어 왔다. 본 연구는 Cervial headgear의 상하악골에 대한 효과를 분석하고 Lower facial height를 기준으로 증가군(>0)과 증가하지 않은 군 ( ≤0)으로 나누어 골격적 특성을 알아보기 위해 단국대학교 부속 치과병원에 내원한 성장기 아동의 II급 부정교합환자 25명을 대상으로 cervical headgear를 사용한 결과 다음과 같이 다소의 지견을 얻었기에 보고하는 바이다. 1. 상악골의 전방 성분이 억제되었고, 구개 평면의 전방이 하방으로 tipping되었으며 상악 제 1대구치의 후방 이동이 있었다. 2. 하악골의 두개저에 대한 상대적인 전방 이동이 있었으며 상악에 대한 하악 제1대구치의 상대적인 전방 이동이 있었고 하악골의 alveolar growth에 의한 수직적인 증가가 있었다. 3. 전안면 고경과 후안면 고경이 각기 유의하게 증가했으나 안면 고경 비율에는 유의성이 없었다. 4. Lower facial height가 증가한 group이 증가하지 않은 group보다 ramus의 길이가 짧고 palatal plane angle이 더 작았으며 상악 제 1대구치의 후방 이동량이 더 많았다. This study was to investigate the horizontal & vertical bone change pattern when using cervical headgear in Class II malocclusion of growing children and compared the skeletal features between the group with increased lower facial height and the group without increase in lower facial height. The results are as follows ; 1. Forward growth of maxilla was inhibited, downward tipping of anterior palatal plane could be seen and distal movement of maxillary first molar was observed. 2. There was relative forward movement of Mandible against the Maxillary cranial base, and relative forward movement of mandibular 1st molar against the Maxilla and vertical increase due to alveolar growth of Mandible. 3. There was significant increase in anterior and posterior facial heights but the ratio of facial height showed no significant difference. 4. The group with increased lower facial height has shorter ramus length, than the smaller palatal plane angle, and more distal movement of Maxillary 1st molar than the group without increase Ha-young Hyun.

배양된 골수 간엽 간세포에서 연골형성의 유도 및 그 포식 인자의 발현

석경수,김현우,강응식 대한정형외과학회 골.연부조직이식학회 2003 대한골.연부 조직이식학회지 Vol.3 No.1

백서피부의 화상 손상에 따른 효소조직화학적 변화

조백현,김영길,허우회,최석현 大韓成形外科學會 1983 Archives of Plastic Surgery Vol.10 No.2

The purpose of this study was to investigate the sequential changes of enzyme activities in severely burned skin of rat at intervals of 2 hours, 8 hours, 1 day and 3 days by histochemical methods. The results obtained were as follows. 1. Acid phosphatase activity was found to be transient increase in dermis and mild decrease in epidermis, hair follicle and sebaceous gland at 2 hour after burning. The activity was not seen in skin after 8 hours. 2. Alkaline phosphatase was found to be decreased in blood vessel and dermal papillae of hair follicle at 2 hour after burning and then was progressively decreased after 8 hours. 3.α-naphtyl acetate esterase activity was found to be decreased in epidermis, dermis and hair follicle at 2 hours after burning and was not seen in skin after 8 hours. There was no significant changes in sebaceous gland after burning.

면역성 혈소판감소성 자반증 및 호중구감소증을 동반한 궤양성 대장염 2예

남승우,양석균,김진천,지현숙,김우건,정훈용,박주상,홍원선,민영일 大韓消化器病學會 1999 大韓消化器病學會誌 Vol.33 No.1

영구형 항서맥 심박조율기 환자의 장기추적관찰

최현석,이무용,최영진,최성준,김효수,손대원,오병희,이명묵,박영배,최윤식,이영우,이명용 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.5

가족성 아밀로이드성 말초신경병증 1예

양우석,서민정,권유석,유현정,노숙영,백소아 대한근전도전기진단의학회 2003 대한근전도 전기진단의학회지 Vol.5 No.2

AC8A-T6 알루미늄 合金材의 切削加工 特性에 關한 硏究

최현민,김경우,김우순,김용환,김동현,채왕석 한국공작기계학회 2002 한국공작기계학회 추계학술대회논문집 Vol.2002 No.-

In this study, examined the cutting characteristics of alumuminum alloy AC8A-T6 that is used to present car piston materials. And in been holding materials machining empirically escape as result that experiment comparison changing the cutting speed and feed on various condition to choose efficient machining condition. The following results can be summarized from this research. 1.As the cutting speed decreased, principal cutting force and thrust cutting force is increased, and reason that cutting force interacts greatly in the low cutting speed is thought by result by BUE's stabilization. 2.The feed speed and cutting speed increase, friction factor is decrescent and the cause appeared the thrust cutting force is fallen than cutting force relatively because chip flow according to increase of the feed rate is constraint. 3.Though specific cutting resistance grows cutting area and the feed rate are few, the cause was expose that shear angle decreases by rake face of tool gets into negative angle remarkably as wear of a cutting tool or defect part of workpiece is cut. 4.Cutting speed do greatly depth of cut is slow, surface roughness examined closely through an experiment that becomes bad, and know that it can get good surface that process cutting speed because do feed rate by 0.1㎜/rev low more than 250m/min to get good surface roughness can.

茵蔯淸肝湯이 肝保護 및 纖維化 抑制에 미치는 影響

승현석,김영철,이장훈,우홍정 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2003 東西醫學硏究所 論文集 Vol.2003 No.-

Objective : The aim of this study is to investigate the inhibitory effect of Injinchunggantang on hepatic sclerosis induced by CCl₄. Methods : Weight, liver function test and complete blood cell count, gross findings, and findings on liver tissue of the past(Hematoxylin & Eosin stain, Masson-Trichrome stain) were studied. Results : When it comes to the change of rats body weight, The CCI₄-Injinchunggantang group lost far less weight than The CCl₄ only group. In the liver function test, which is focused on various area such as total cholesterol, alkaline phosphotase albumin, aspartate transaminase, alanine transaminase, The CCl₄ Injinchunggantang group was much more closer to normal limit than the CCl₄ only group. In the complete blood cell count, including while blood cell, red blood cell, hemoglobin, hematocrite, platelet, The CCl₄ Injinchunggantang group significantly closer to normal limit than CCl₄ only group. In the gross findings of hepatic fibrosis models, Injinchunggantang showed inhibitory effect on hepatic fibrosis in the order. In the past findings of hepatic fibrosis models in Hematoxylin & Eosin, Masson-Trichrome staining, the liver in CCl₄ only group showed atrophy and necrotic change with white nodules, whereas that of CCl₄ Injuchuinggantang group showed lesser significant change with the well preserved tone of the tissue. In the extent of the inhibition of the hepatic fibrosis, the Injinchunggantang group showed statistically significant inhibitory effect(p<0.05) in the sclerosis model. Conclusions : These results show that Injinchunggantang have inhibitory effect on hepatic sclerosis induced by CCl₄ and further ultimately prevent liver cirrhosis. To obtain more credible results in the experiment, the invention of a new experimental model more similar to human hepatic sclerosis is still needed.

우리나라에서 분리되는 Haemophilus influenzae의 9종 항균제에 대한 시험관내 감수성

장우현,최명식,석종성,정윤섭,서진태 대한화학요법학회 1989 대한화학요법학회지 Vol.7 No.2

To assess the occurrence of antimicrobial resistance among clinical isolates of H. influenzae in Korea, a total of 238 isolates were tested for their in vitro susceptibitlity to ampicillin and cefaclor by disc diffusion and 105 isolates were tested against nine antimicrobial agents-by the agar dilution method recommended by NCCLS. The antimicrobial agents sued for testing were ampicillin (Sigma A-9518, U.S.S.), cefaclor (Daewoong Lilly, Korea), cephalexin (Sigma C-4895, U.S.A.), cephradine (Sigma C-8395, U.S.A.), cephalothin (Sigma C-4520, U.S.A.), cefadroxil (Sigma C-7020, U.S.A.), erythromycin (Sigma E-6376, U.S.A.), teracycline (Sigma T-3383, U.S.A.) and cefatrizine (Dong-A Pharmaceutical Co., Korea). The isolation rate of H. influenzae from various clinical samples was 18.9%. Using the disc diffusion test, the resisant rates to ampicillin and cefaclor were shown to be 21.9% and 3.4%, respectively. Among the 52 ampicillin-resistant strains, 42 were susceptible to cefaclor (80.8%), and only two strains wre resistant. The MIS_(s) of ampicillin ranged from <0.125 ㎍/㎖ to >128 ㎍/㎖, and its MIC_(90) was 1 ㎍/㎖. Ampicillin showed the lowst MIC_(90) among the tested antivicrobial agents. The MIC_(90) of the tested cephalosporins ranged from 9.2㎍/㎖ to > 128. Among them, cefaclor showed the lowest MIC_(90) and its MIC_(90) was 9.2 ㎍/㎖. The MIC_(90) of tetracycline and erythromycin were 2.5 ㎍/㎖ and 14.4 ㎍/㎖, respectively. By the MIC, the resistant for ampicillin, cefalor, cephalexin, cephracine, cephalothin, cefadroxil, erythromycin, tetracycline and cefatrizine were 9.5%, 1.9%, 61.9%, 76.2%, 3.8%, 68.6%, 65.7%, 13.3% and 5.7%, respectively. There was no evidence that the MIC_(s) of cefaclor for the ampicillin-resistant strains differed significantly from those of cefaclor obtained with the ampicillin-susceptible strains. Except two islates, all of the multiple-esistant strains of H. influenzae were suceptible to cefaclor.