변색 실활치에 대한 carbamide peroxide gel의 표백효과

박선아,김선호,황윤찬,오병주,윤창,박영준,정선와,황인남,오원만 大韓齒科保存學會 2002 Restorative Dentistry & Endodontics Vol.27 No.4

The bleaching of discolored nonvital teeth is conservative treatement that satisfy the cosmetic desire. The most common method for this treatement, walking bleaching, is using 30% hydrogen peroxide and sodium perborate. Many alternatives are suggested for preventing the external cervical root resorption that is the common complication of the nonvital teeth bleaching with 30% hydrogen peroxide. The same extent of oxidation reactions as that resulted by the bleaching with the application of 30% hydrogen peroxide and sodium perborate can also be acquired more safely by materials that contain 10% carbamide peroxide, used primarily for the bleaching of vital teeth. Therefore, this study was performed to evaluate the efficacy of 10% and 15% carbamide peroxide bleaching gel in nonvatal teeth bleaching. The internal bleaching of intentionally discolored teeth was performed in vitro with 10% carbamide peroxide (Group 1), 15% carbamide peroxide (Group 2), mixture of distilled water and sodium perborate (Group 3), and mixture of 30% hydrogen peroxide and sodium perborate (Group 4). The bleaching materials were refreshed following 3, 6, 9 and 12 days. To evaluate the bleaching effect, the color change of the crowns was measured at 1, 2, 3, 4, 7 and 15 days of bleaching using the colorimeter. The results were as follows : 1. L^* and ΔE^* values were increased with time in all bleaching agents(p<0.01). 2. There was no significant difference in L^* and ΔE^* value among bleaching agents. 3. Δ^* value higher than 3 was shown after 3 days of bleaching with 10% carbamide peroxide gel, 1 day with 15% carbamide peroxide gel, 4 days with mixture sodium perborate and distilled water and 4 days with mixture sodium perborate and 30% hydrogen peroxide, respectively. These results revealed that the use of 10% and 15% carbamide peroxide bleaching gel in non-vital teeth bleaching is as effective as mixture of distilled water and sodium perborate and mixture of 30% hydrogen peroxide and sodium perborate. Accordingly, carbamide peroxide could be used clinically to bleach discolored non-vital teeth.

일광담마진 (日光蕁麻疹)

이재준(Jae Joon Lee),황선욱(Sun Wook Hwang),김영표(Young Pio Kim) 대한피부과학회 1985 대한피부과학회지 Vol.23 No.1

We herein described a 27 year-old male who has been suffering from pruritic erythematous wheal and flare on sun-exposed areas, especially the midback for the past, ten months. The action spectrum of this patient was between 320 and 400 nm, .Passive and reverse passive transfer tests were negative. According to the classification by Harber et al, the current case seemed to belong to type II.

외음부의 기저세포암

김보영 ( Bo Young Kim ),황선정 ( Sun Jung Hwang ),박병준 ( Byung Joon Park ),이은실 ( Eun Sil Lee ),한호섭 ( Ho Suap Han ),김용욱 ( Yong Wook Kim ),김태응 ( Tae Eung Kim ),노덕영 ( Duck Yeong Ro ),이안희 ( An Hi Lee ) 대한산부인과학회 2010 Obstetrics & Gynecology Science Vol.53 No.9

Basal cell carcinoma (BCC) is the most common human malignant neoplasm, accounting for 75% of all non-melanoma skin cancer. The incidence of BCC is strongly correlated with sun exposure as well as older age. Therefore, the vast majority of BCCs is observed in elderly patients on the sun-exposed skin of the head and neck with a frequency of more than 80%. BCC is very rare on sun-protected skin such as the perianal and genital regions and other etiologic factors must be considered in these cases. Although the pathogenesis of vulvar BCC is unclear, early diagnosis is very important. Because BCC in these areas sometimes seems innocuous, it is recommended that a biopsy of all suspect lesions be performed. We report a woman with BCC of the vulva treated with wide local resection and reviews the literatures on this subject.

5세 남아의 Influenza 종격동기종 및 대엽성 폐렴 1례

오희성,한유진,연은경,선동신,송준환,박경배,박준수,김영통,남해선,최영진,김용배 순천향의학연구소 2009 Journal of Soonchunhyang Medical Science Vol.14 No.3S

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전단자극 시 나트륨-칼슐 교환체 활성에 의한 횡방향 심방 근세포 Ca2+ 웨이브의 발생

김준철, 왕준, 손민정, 김경희, 우선희 충남대학교 약학대학 의약품개발연구소 2017 藥學論文集 Vol.32 No.-

In the present study, we investigated possible mechanism for the triggered global CaH wave from local Ca2+ wave in atrial myocytes under shear stress. Shear stress was applied onto single cells isolated from rat atria and two-dimensional confocal Ca2+ imaging was performed to measure Ca2+ signal. Shear stress of 16 dyn/cm2 induced local Ca2+ wave, which was followed by a rapid transverse global Ca2+ wave inhibition of Na + -ci+ exchange using KB-R7943 suppressed the occurrence of rapid transverse wave ob served under shear stress, but not the shear-induced local wave. in the presence of this chemical local wave was developed to global wave under shear stress which results in slower time to peak of peripheral and central CaH transients. As the preceding local Ca"+ wave signal was higher, the latency of the occurrence of transverse global wave was shorter, suggesting Ca2+ dependence of transverse Ca2+ wave. The results sug-gest that shear stress may activate Na+ -Ca2+ exchange via local CaZ+ wave, triggering the rapid global Ca2+ wave

고지방식을 섭취한 랫드에서 김치유산균의 콜레스테롤 저하효과

조미선, 노정미, 임형준, 한선경, 신명수, 이완규 충북대학교 동물의학연구소 2006 Journal of Biomedical and Translational Research Vol.7 No.2

본문참고

소방호스 밀착강도시험방법에 관한 연구

김준배,백창선,김학진 한국화재소방학회 2001 한국화재소방학회논문지 Vol.15 No.1

소방호스의 밀착강도 시험방법을 개선하기 위하여 5개국(한국, 미국, 영국, 중국, 일본), 7개의 기술기준(KOFEIS, UL, NFPA, BS, 중국기술기준, JIS, 일본검정기술기준)을 비교 고찰하고, 국내에서 생산되는 소방호스를 무작위로 발췌하여 밀착강도시험을 실시하였다. 밀착강도시험 및 기술기준 비교 고찰을 통하여 밀착강도시험은 소방호스의 호칭별로 시험시효의 크기와 박리시험속도 및 판정기준을 세분화함으로서 소방호스의 밀착강도를 개선시킬 수 있다는 결론을 얻었다. In order to improve the adhesion test methods for fire hose, 7kinds of stands (KOFEIS, UL, FM, NFPA, BS, Chinese standard, JIS, JFEII standard) un 5 countries (Korea, USA, UL, China, Japan) were compared and adhesion tests were conducted by using the samples choosed randomly from the product produced in Korea. It was concluded that the sample size, the rate of seperation of a strip of the lining from the jaket and standard judgment should be more differed and divided in accordance with the fire hose number in adhesion test to get the high qualily of fire hose

상악 견치 후방견인시 MAS(Molar Anchoring Spring)의 저항원 조절에 대한 임상적 연구

김선민,이준노,노준,전윤식 대한치과교정학회 1998 대한치과교정학회지 Vol.28 No.2

마찰견인법으로 상악견치를 후방견인할 때, 저항원상실을 최소로 하며 조절되지못한 경사이동을 예방하기 위한 장치인 MAS(molar anchoring spring)를 고안하여 임상에 적용하였다. 31명(여자 29명, 남자 2명)의 표본에서 MAS를 사용하여 상악견치의 후방견인을 시행하였고, 견인 전후의 측모 두부 방사선 규격사진, orthopantomogram과 치아모형을 채득하였다. 얻어진 정보로부터 상악 제1대구치의 저항원소실 및 상악견치의 경사이동경향을 조사하여 다음과 같은 결과를 얻었다. 1. 상악 제1대구치의 경우 수직정출과 intermolar width의 변화가 없었으며, 시상면에서 적은 양의 저항원소실만이 있었다. 2. 상악 견치의 경우 원심경사 및 약간의 압하가 일어났으며 교합이 깊어졌다는 소견은 보이지 않았다. In maxillary canine retraction by means of sliding mechanics, we designed MAS(molar anchoring spring) to prevent anchorage loss and uncontrolled tipping of tooth movement and have applied it in clinical cases. The anchorage control of the maxillary first molar and type of tooth movement of the maxillary canine were studied in 31 subjects. The measurement were made on cephalograms, orthopantomograms and dental casts. The obtained results were as follows. 1. In case of the maxillary first molar, there was a little sagittal anchorage loss, but there was no vertical & transverse anchorage loss. 2. In case of the maxillary canine, there was distal tipping movement and also there was a little intrusion tendency.

인지심리학의 이해와 응용 : 교육과 신경인지 Education and Neurocognition

진영선,이준석 경북대학교 사회과학연구소 1991 社會科學硏究 Vol.7 No.-

Cognitive psychology is a discipline which tries to delineate and to understand fundamental mechanisms of human thinking. The mechanisms that have been found by cognitive psychologists have such meaningful implications to other areas of social research that they now serve as important frameworks for research of a variety of social phenomena. In the first part of the paper, brief history of how cognitive psychology has evolved is presented in a very schcematic style for who dont have any background in psychology. Secondly, main part of the paper will be devoted to introduce a few basic topics in cognitive field, including attention, memory, schema and metacognition and discuss their implications in a couple of related fields. Finally, current interests both by novice people and experts on neurocognitive approach to human thinking and education is briefly highlighted, although the topics presented are far from exhaustive.

주암댐 주변지역의 인문, 자연환경과 보전

김준선,장석모,김종홍 順天大學校 1992 論文集 Vol.11 No.1

주암댐이 건설됨에 따라 유역인구는 감소하였고, 전답은 침수되어 농업이 쇠퇴하여 댐 건설 전과 댐 건설 후의 인문환경은 차이가 있었다. 댐 주변지역의 기상은 안개일수의 증가와 일조시수의 감소가 뚜렷하여 내수면 증가에 따른 기상변화가 확인되었다. 현존 식생은 소나무림과 낙엽활엽수림으로 구성되었고 이는 7개의 자연군락과 10개의 대상군락으로 구분되었으며 식재림이 도처에 산재하였다. 댐 주변지역의 식물은 41목 122과 433속 629종 2아종 109변종 12품종으로 총 752종이 관찰되었다. 한편 녹지자연도 5, 7, 8이 대부분의 지역을 차지하였으며 수역이 증가하였고 어류상과 동물상의 변화는 생태계의 먹이사슬에 영향을 미치는 것으로 판단되었다. The population and the number of household around Juam-Dam watershed dscreased after the construction of the Dam. Lots of dry fields and paddy fields were submerged, which resulted in the decline of agriculture. Cultural environment, thus, seemed to have been changed in the area around Juam-Dam. Climatic changes were also observed between before and after the construction of the Dam. Especially foggy days were more frequently observed and photoperiod decreased in 1990 than previous years. Actual vegetation consisted of pine forests and broad-leaved forests. Nine kinds of natural forest community and 10 dinds of substitutional vegetation were classified in the surveyed area. Artificial forests were scattered in places. As for flora, a total of 752 species, that is 41 orders, 122 families, 433 genera, 629 species, 2 subspecies, 109 varieties and 12 forma, were observed. Degree of green naturality (DGN) of 5, 7, 8 was rated in the greater part of surveyed area with the increase of waters. As fishes and fauna changed, food web might be affected by deterioration of ecosystem.