만성 치열 환자에 대한 GTN 국소요법과 보존적 치료의 효과 비교

이광렬,조경아,황도연,김건욱,박원갑,윤서구,김현식,이종균 대한대장항문학회 2000 Annals of Coloproctolgy Vol.16 No.6

실시간 광 BJTC 시스템 구현을 위한 신호 흐름 제어

황수용,차광훈,김호연 서울산업대학교 산업대학원 1993 大學院論文集 Vol.2 No.-

One of the most ridiculous issue of the moving target tracking system is real-time processing of the input scene so as to extract the target features and estirmate the target states but there are no way to solve this problem sensationally in a digital algorithm. Recently an optical approach for this problem is presented; named BJTC tracker. In this paper, we propose a hardware that can the control the JTC signal for the BJTC system and show the timing chart of the hardware system to prove the design method. We use the FPGAs, low-accesstime RAM, and high performance ADC and DAC. And we use NTSC type CCDs and monitors.

치은연하 파절로 치조골 소실을 동반한 상악측절치에서 orthodontic extrusive remodeling후 임플란트 식립을 통한 심미수복 : 증례보고

황수연,손원준,한영철,배광식,백승호,이우철,금기연 大韓齒科保存學會 2008 Restorative Dentistry & Endodontics Vol.33 No.1

심미적으로 중요한 전치부에서 단일 치아 임플란트를 이용한 보철수복은 임상의에게 새로운 도전과제 중의 하나가 되었다. 그러나 전치부에서 single-unit implant는 식립할 부위의 치조골 상태가 양호해야 하는데 치은연하 파절로 인해 치아 주위에 골 손실이 있는 경우 immediate implant는 심미적으로 문제를 야기할 수 있다. 따라서 본 증례는 "orthodontic extrusive remodeling"을 통해 파절치와 주위 조직을 교정적으로 정출시켜 임플란트 식립을 위한 연조직과 경조직을 증대시킨 후 임플란트 식립을 통해 상악측절치에서 성공적인 심미수복을 이룬 증례에 관한 것이다. The treatment of esthetic areas with single-tooth implants represents a new challenge for the clinician. In 1993, a modification of the forced eruption technique, called "orthodontic extrusive remodelling" was proposed as a way to augment both soft- and hard-tissue profiles at potential implant sites. This case report describes augmentation of the coronal soft and hard tissues around a fractured maxillary lateral incisor associated with alveolar bone loss, which was achieved by forced orthodontic extrusion before implant placement. Through these procedures we could reconstruct esthetics and function in a hopeless tooth diagnosed with subgingival root fracture by trauma.

瑕疵擔保責任의 本質에 관한 一考察

黃洸淵,羅鉉台 東新大學校 1997 論文集 Vol.9 No.-

The problem of defective security responsibility is one of the most important in the responsible legal system of civil law. About this, our present civil law has only several provisions and their ambiguity is bringing about many discussion in interpretation. about all the theory of essence is the main issue. In regard to the theory of essence, the theory of legal responsibility and the theory of the responsibility of non-fulfillment of obligation are contrasted and the former os supported incapability as a logic reason. Mainly, the theory of legal responsibility takes that of a certain subject dogma and primitive. But this causes the inconsistence with the provisions of civil law, Even though the theory is looking for the logical reason in the governer's claim night of Rome law, not inheritated historically. The theory of legal responsibility based on the law of Rome cannot admit of being applied and the theory results in the over-estimation of sellers, causing the problem of distribution of profits. Therefore, the essence of defective security responsibility should be that of non-fulfillment of obligation. If so, we can interprete indefinite subject transaction, sort-transaction, and defective security responsibility, etc. Generally and consistently and the security responsibility of all the profitable contracts can be accounted for and consistent with the worldwide legislature trend. But as an effect of defective security responsibility, there remains the problem of the range of compensation there remains the problem of the range of compensation for damage and non-fulfillment of general obligation.

지각과민억제제 적용이 수종 접착제의 미세인장결합강도에 미치는 영향

황성연,이경하,유미경,이광원 大韓齒科保存學會 2003 Restorative Dentistry & Endodontics Vol.28 No.5

This study evaluated the influence of a desensitizer(MS coat) on microtensile bond strength of different adhesives:a three step adhesive(All Bond 2), a two step adhesive(Single Bond), a one step adhesive(One up Bond F). Non-caries extracted human molars were used. Dentin surface was obtained by horizontal section on mid-portion of crown using a water cooled low speed diamond saw. Teeth were randomly divided into 6 group. AMO(MS coat + All Bond), SMO(MS coat + Single Bond) and OMO(MS coat + One up Bond F) dentin surface were treated with 17% EDTA before bonded adhesive. AMX, SMX and OMX dentin surface were bonded with All-Bond 2, Single Bond and One-up Bond F, respectively. with no previous treatment with MS coat and 17% EDTA. About 1cm high resin composite(Z 250) were incrementally build-up on the treated surface. The specimens for the microtensile test were serially sectioned perpendicular to the adhesive layer to obtain 0.7 × 0.7 mm sticks. 30 sticks were prepared from each group. After that, tensile bond strength for each stick was measured with Microtensile Tester at a 1mm/min crosshead speed. Fractured dentin surfaces were observed under the SEM. The results were statistically analysed by using a One way ANOVA and Tukey's test(p<0.05). Value in MPa were: AMO 44.35±13.21; SMO 39.35±13.32; OMO 31.07±1O.25; AMX 49.22± 16.38; SMX 56.02±13.35; OMX 72.93±16.19. Application of MS coat reduced microtensile bond strengths of both Single Bond and One up Bond F, whereas microtensile bond strengths of All Bond 2 were not affected significantly.

열처리 조건이 시금치의 이화학적 특성 및 영양 조성에 미치는 효과

이지선, 황인국, 유선미, 민상기, 김광일, 조연지, 최미정 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.1

This study investigated the effect of thermal treatment (blanching) conditions on the physicochemical and nutritional properties of spinach. For thermal treatments, fresh spinach was treated by three blanching methods including boiled water, steam and pan frying treatments. At the varying time intervals of treatments, pH, color, shear force, proximate composition, organic acid content, peroxidase activity and microbial counts were evaluated. The pH of all treatments tended to increase with increasing blanching time, however, no significant differences among treatments were obtained. The shear force of spinach decreased with blanching time, particularly hot water treatment showed the rapid decrease in the shear force of spinach. The lightness of spinach showed similar pattern with shear force. For proximate compositions, the highest moisture content was found in hot water treatment, while crude protein and ash were highest in steam treatment. Due to the usage oil, pan frying treatment involved in the highest lipid content. The organic acid content treatment was in the order of hot water, pan frying and steam treatment. The thermal treatments attributed to low total plate count of spinach. In addition, thermophilic bacteria, coliform, mold and yeast were not detected in all thermal treatments. Peroxidase activity was lowered by applied thermal treatments. Based on the results, the best blanching condition for spinach was found in steam treatment for 60 s where the spinach showed the minimal changes in physicochemical and nutritional properties of spinach.

B형 간염 동반 원발성 간암 환자에서의 CYP2D6와 NAT2 다형현상에 관한 연구

신동일,이광수,최연남,황기은,조율희 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.2

The CYP2D6 and N-acetyltransferase (NAT2) are polymorphic enzymes which are expressed in the hepatocyte in a genotype-determined manner. CYP2D6 and NAT2 are known to be involved in the inactivation and activation of various mutagens and carcinogens, respectively. The activities of the two enzyme systems are associated with the genetic susceptibility of many human cancers. This study was performed to determine the genotype frequencies of the two enzyme systems in primary hepatocellular carcinoma patients and healthy controls. One hundred healthy controls and 55 liver cancer patients were analyzed by polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP). The results are as followings:1. In the healthy controls, CYP2D6 wild type allele frequency was 0.985 and CYP2D6^*4 frequency was 0.015, and no CYP2D6 poor-metabolizer was detected. No significant differences were found in hepatocellular carcinoma patient group. 2. Frequencies of F, S1, S2 and S3 alleles of NAT2 system were 0.725, 0.01, 0.14 and 0.125 in controls, respectively. The genotype frequencies were found to be 0.91 of rapid acetylator and 0.09 of slow acetylator. No significant differences were found in hepatocellular carcinoma patient group. 3. These results suggest that the distribution of CYP2D6 and NAT2 polymorphisms is very unique in Korean populations characterized by extremely low frequency of CYP2D6 poor-metabolizer and NAT2 slow acetylator. CYP2D6 and NAT2 polymorphisms seemed not to play an important role in the hepatic carcinogenesis in Korean population.

8.3% Carbamide Peroxide 함유 펜 형 자가미백제인 BIancTis Forte의 색조개선 및 안전성에 관한 임상연구

이진경,민선홍,홍성태,오소람,정신혜,황영혜,유성엽,배광식,백승호,이우철,손원준,금기연 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.2

This clinical study evaluated the whitening effect and safety of polymer based-pen type BlancTis Forte(NIBEC) containing 8.3% carbamide peroxide. Twenty volunteers used the BlancTis Forte whitening agent for 2 hours twice a day for 4 weeks As a control. Whitening Effect Pen (LG) containing 3% hydrogen peroxide was used by 20 volunteers using the same protocol. The change in shade (ΔE^(*) color difference) was measured using Shadepilot™ (DeguDent) before, during and after bleaching (2 weeks, 4 weeks and postbleaching 4 weeks). A clinical examination for any side effects (tooth hypersensitivity or soft tissue complications) was also performed at each check-up. The following results were obtained. 1 Both the experimental and control groups displayed a noticeable change in shade (ΔE) of over 2 No significant differences were found between the two group (p>0.05) implying that the two agents have a similar whitening effect. 2 The whitening effect was mainly due to changes in a and b values rather than in L value (brightness). The experimental group showed a significantly higher change in b value thus yellow shade than the control(p < 0.05) 3 None of the participants complained of tooth hypersensitivity or soft tissue complications confirming the safety of both whitening agents 8.3%의 carbamide peroxide를 함유한 펜형 코팅용 미백제인 BlancTis Forte (NIBEC, Seosul & JinCheon)를 실험군으로, 3% hydrogen peroxide를 함유한글 Whitening Effect Pen (LG. Seoul) 제재를 대조군으로 각각 피험자 20명에게 2시간씩 1일 2회 제조사의 지시대로 치아표면에 4주간 적용하도록 지시하고 색조개선 효능과 안전성을 평가하였다. 미백 효과는 미백 전 및 미백 2주, 4주 및 미백 종료 4주 후에 Shadopilot™을 이용하여 색 변화를 측정하였고, 매 내원시기마다 모든 환자는 치수생활력 검사와 치주 및 치태 검사를 통해 부작용 여부 (치아과민증 및 구감 내 연조직의 부작용)를 기록한 후 다음과 같은 결과를 얻었다. 1.실험군 및 대조군의 색 변화량 (ΔE)은 2이상으로 인지할 수 있는 색 변화를 보였으며, 두 제품 간에는 통계적으로 유의한 차이를 보이지 않아 (p > 0.05) 유사한 미백효능을 나타냄을 알 수 있었다. 2,미백효과는 명도의 개선보다는 주로 a. b값의 변화에 의한 것으로 특히 실험군에서 b값의 변화, 즉 황색조의 개선효과가 대조군에 비해 유의성 있게 높은 것으로 나타났다 (p <0.05). 3.치아나 치은의 과민증이나 이상증상을 호소하는 피험자는 없어 두 제품 모두 안전성을 확인할 수 있었다.

Toxicity Assessment of NCS in Experimental Animals

KWANG HYUN HWANG,JUNGIL CHOI,NA HYUN KIM,SANG JOON LEE,YEON GYU MOON,JE HEIN KIM,TAE KIL TAK,JU HONG LEE,YEON JI UM,BO RYUNG HWANG,JEONG DOO HEO 한국실험동물학회 2016 한국실험동물학회 학술발표대회 논문집 Vol.2016 No.08

Crystallization of '20S' Proteasome fro Rat Liver

Hwang, Kwang Yeon,Kim, Kyeong Kyu,Chung, Chin Ha,Tanaka, keiji,Suh, Se Won Korean Society of Molecular Biology 1994 Molecules and cells Vol.4 No.3