접착제 미 사용시 치면열구전색제로서의 유동성 복합레진 평가

권호범,김명진,신철환,김지연,박기태 大韓小兒齒科學會 2006 大韓小兒齒科學會誌 Vol.33 No.2

본 연구의 목적은 유동성 복합레진을 치면열구전색제로 사용할 수 있는지 여부를 평가하는 것이다. 세 종류의 유동성 복합레진(Filtek Flow, Tetric Flow, Charmfil Flow)과 한 종류의 filled sealant(Ultraseal XT plus)가 사용되었다. 주사전자 현미경을 이용하여 세 종류의 유동성 복합레진 및 filled sealant의 resin tag 형성 양상을 비교하였다. 미세누출 평가를 위해 발거된 사람의 소구치 54개를 각각 18개씩 무작위로 세 군으로 배분하였다. 각 군마다 통상의 filled sealant 와 한 가지씩의 유동성 복합레진을 교합면 열구에 도포하였다. 치아들은 thermocycling(5˚ ± 2℃와 55˚ ± 2℃ 사이에서 30초씩 1200회 시행) 후 48시간 동안 1% methylene blue 용액에 보관하였다. 각각의 치아를 절단하여 미세누출 정도를 관찰하였다. 세 종류의 유동성 복합레진 및 filled sealant는 유사한 resin tag 형성양상을 보였다. 세 종류의 유동성 복합레진은 각각 filled sealant보다 현저히 더 많은 미세누출을 보였다. 세 종류의 유동성 복합레진 간의 미세누출 정도는 유사하였다. 유동성 복합레진은 통상의 filled sealant와 비교해볼 때 보다 많은 미세누출을 야기할 수 있으므로 치면열구전색제로 적절하지 않다. The aims of this study were to determine if flowable composites can be used as pit and fissure sealants without bonding agents. Three flowable composites(Filtek Flow, Tetric Flow, Charmfil Flow) and a filled sealant (Ultraseal XT plus) were used. The pattern of resin tag formation in the four sealant meterials were compared using SEM. For the microleakage assessment, 54 extracted human premolar teeth were randomly divided into 3 groups containing 18 premolars each. In each group, a conventional filled sealant and one of the three flowable composites were applied to occlusal fissures. The teeth were thermocycled(1200 cycles between 5˚± 2℃ and 55˚± 2℃ with a dwell time of 30 seconds) and immersed in a 1% methylene blue solution for 48 hours. Each tooth was sectioned and examined to determine the extent of dye penetration. Three flowable composites and a filled sealant showed a similar resin tag formation pattern. The three flowable composites showed significantly more microleakage in each group than the filled sealant. The level of microleakage was similar in the three flowable composites. Flowable composites are not recommended as pit and fissure sealants because more microleakage can occur even when occlural fissures are mechanically widened.

신경섬유종증 환자에게서 발생한 특발성 혈소판 감소증 1예

권세훈,김형호,강지인,장재혁,원경준,장재현,김상용,배학연 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Idiopathic thrombocytopenic purpura is a disease characterized by thrombocytopenia in peripheral blood with positive anti-platelet antibody titer, no splenomegaly, the presence of megakarocyte. The causes of idiopathic thrombocytopenic purpura were usually related to autoimmune disease, infection and drugs. A 46-years-old man was admitted for evaluation of abdominal mass. He has many cafe-au-lait spots and nodules in almost skin for 30 years. Several years ago, he palpated mass in Lt. inguinal area. hIe has known the abdominal mass after checking abdomen CT in local clinic and visited our hospital for evaluation of abdominal mass. At admission, laboratory tests showed hemoglobin 12.5 g/dL, hematocrit 38.4 %, WBC 5,460 /㎣ (neutrophil 64.5%, lymphocyte 21.7%, monocyte 4.1%, eosinophil 5.4%), reticulocyte 0.7%, Platelet 52,000 /㎣, total protein 6.51 g/dL, albumin 3.80 g/dL, alkaline pohsphatase 161 IU/L, AST 110.7 IU/L, ALT 64.9 IU/L, total bilirubin 0.44 ㎎/dL, BUN 18.4 ㎎/dL, creatinine 0.79 ㎎/dL. Peripheral blood smear showed normocytic normochromic anemia, thrombocytopenia. Bone marrow aspiration smear showed normoplastic myeloid and erythroid precursor. The bone marrow biopsy section shows normocellular marrow (35%) for his age and mildly increasing myeloid cell lineage. We have experienced a case of idiopathic thrombocytopenic purpura in a patient being in neurofibromatosis and therefore reporting it with documentary records. 저자들은 신경섬유종증 환자에서 특별한 원인을 발견할 수 없었음에도 특발성 혈소판 감소증이 발생한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

噴霧法에 依한 硫化亞鉛 薄膜의 電場發光 調査

손연규,윤지홍,권태향,한광수,이자현 안동대학교 기초과학연구소 1991 基礎科學 硏究論文集 Vol.2 No.1

The study of Electroluminescence has been begun with that the two Germans, B. Gudden & R. W. Pohl in 1920 examined the remaining lights by dint of adding Electric Field at the fluorescent substance, and from 1952 the study became brisk, in 1960 made a peak, and afterward it was diminished. The above facts were appeared through H. E. Ivey`s investigation. The cause was it that the light-efficiency and the brightness were very pessimistic, though the beginning of EL-Study was given in the development of illumination. In 1950, however, with the initiative that C. W. Jerome of Sylvania Co. deviced and announced EL-Lamp, EL-Fluorescent substances were embed and merchandised as EL-Panels, and after a while it was applied to EL-Lamps, Expression Apparatuses, Light Amplifier, Logic Circuit and so on, with which the use frequency got high, and it has been developed as a promising Electronic Industry. But in our country, considering the various conditions, in order to find out the possibility of EL-Production within the home country, Impurity was introduced to ZnS powder, EL of ZnS : Cu, Cl & ZnS : Cu, Mn, Cl could be manufactured, and surveying the Voltage Characteristics, the Frequency Characteristics, and the Spectral Response of the manufactured things, the fundamental technique-problems about the composition of ZnS powder, the introduction of impurity, the formation of thin-thickness, and the construction of Cell, etc were solved gradually. 1. The quantity of Cu must commonly be more one order than in the use of Photoluminescence, as a whole 10(-3)gm,atm/mole ZnS is fitted, and Mn suitable in about 10 times of Cu. 2. Yellow color must dope Cu as well as Mn, when the quantity of Cu fixed to a certain amount, in case that the quantity of Mn is decreased, it be turned into Yellow color, if it is increased, it be taken Orange color. 3. In vacuum flowing HzS gas and baking at the moment, it is said that EL of which brightness is high, but in the air we can secure ZnS : Cu, Cl EL. only. 4. In referring to the conditions 1, 2, 3, I can infer that EL-manufacture if possible in our country.

정신과 입원환자의 서비스 만족척도의 개발

김철권,이지연,송영선,김규호,김경률,김제원,이동기,최병무 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.3

목적 본 연구의 목적은 국내 정신의료기관(정신병원, 종합병원 정신과)에서 간편하게 사용할 수 있는 신뢰도와 타당도가 검증된 입원환자의 서비스 만족척도를 개발하기 위한 것이다. 방법 여러 단계를 거쳐 국내 실정에 맞는 문항을 개발하였고,정신병원, 종합병원, 대학병원 정신과 병동에서 퇴원하는 348명의 환자들을 대상으로 신뢰도와 타당도를 조사하였다. 요인분석 결과 5개의 요인이 추출되었으며 전체 변량의 63.04%를 설명하였다. 내적 일관성에 대한 신뢰도 계수 (Crohnbach's α)는 0.95로 상당히 높은 수준이었고, 수정된 개별문항-총점 상관계수는 0.50부터 0.72까지의 범위에 속하였다. 요인분석을 통해 추출된 서비스 만족척도의 각 하위척도 점수와 서비스 만족척도에 첨부된 각 영역에 대해 전반적인 만족도를 묻는 세 개의 문항 점수 간의 상관성 역시 유의하게 높았다. 결과 진단명에 따른 서비스 만족척도의 전체 점수에서는 불안/신체형/강박장애 환자군과 기분장애 환자군이 각각 정신분열병 및 기타 정신병 환자군과 알코올중독 장애 환자군에 비하여 유의하게 높은 점수를 보였으며, 입원형태에 있어서는 자발적 입원군이 강제 입원군에 비하여 전체 만족점수가 유의하게 높았다. 그러나 성별, 월수입, 학력, 직업, 종교, 결혼상태 등의 변수에서는 서비스 만족척도의 전체 점수에서 유의한 차이가 발견되지 않았으며, 마찬가지로 연령, 입원일수, 입원횟수, 첫 발병나이, 유병기간 등의 임상적 변수에서도 서비스 만족척도의 전체 점수와 유의한 관계를 보이지 않았다. 서비스 만족척도의 전체점수에서 대학병원 환자군이 정신병원 환자군과 종합병원 환자군에 비하여 각각 유의하게 높았다. 결론 결론적으로 국내 정신의료기관에 입원한 환자들의 서비스 만족을 평가하기 위한 목적으로 개발된 본 척도는 높은 수준의 신뢰도와 타당도를 보였으며, 또 국내 정신의료 환경에 맞는 요인구조를 보였다. 따라서 정신의료 서비스에 대한 정신과 환자의 만족도에 대한 연구가 거의 없는 실정에서 본 척도의 개발은 향후 국내 정신의료의 질과 치료결과를 높이는 도구로 활용될 수 있을 것으로 기대된다. Objectives : To develop and test the validity and reliability of a brief self-completed questionnaire (Service Satisfaction Scale : SSS) for routinely assessing the quality of service in psychiatric ward inpatients. Methods : A 30-item multidimensional questionnaire was developed by several steps of face validity and content validity. The questionnaire was administered to inpatients (n=348) discharged from psychiatric hospitals, general hospitals, and University hospitals. Construct validity was supported by performing principal component analysis. Reliability was estimated by calculating internal consistency of Cronbach's alpha. Results : Factor analysis yielded five factors comprising staff attitude, treatment quality, ward environment, access/cost, and ward rule, which account for 63.04% of the common variance. The internal consistency of the scale was high (Cronbach's alpha=0.95). The concurrent validity was supported by the significant correlation of each of five factors with item that measured overall satisfaction of SSS. Patients with neurosis (anxiety disorder, somatoform disorder, obsessive compulsive disorder) and mood disorders were significantly satisfied than those with psychosis and alcoholic disorders. Patients who admitted voluntarily were more significantly satisfied than those who admitted involuntarily. Sociodemographic variables such as age, gender, marital status, monthly income, education level, employment status and religion were not significantly different at the total scores of SSS. Similarly, clinical characteristics such as age of onset, duration of illness, lengths of hospital stay and number of previous hospitalization did not associate significantly with the total scores of SSS. Patients discharged from university hospitals were significantly more satisfied than those of the general and psychiatric hospitals. Conclusion : SSS performed well in the validity and reliability, indicating that it can be a useful tool for measuring Satisfaction of psychiatric inpatients in Korea.

SPA형 브랜드의 점포속성이 브랜드 선호도와 재구매 의도에 미치는 영향

박정권;이지연 한양대학교 2010 韓國 生活 科學 硏究 Vol.30 No.1

The purpose of study was to propose the strategy for increasing the merchandising power of the SPA brand to improve the competitiveness of domestic fashion industry. Factor analysis, frequency, one-way ANOVA, and Duncan test were used for data analysis. And F,G.I(Focus Group Interview) was used for this study. The result were as follow: Store Attributes were categorized in four factors: store environment, location convenience, product, and store service. A consumer's the importance of store attributes was significantly different depending on that consumer's demographic characteristics(sex). This result should not be interpreted by expanding to the whole group of the consumer in SPA brand, as the sample used in this study is limited to those in Seoul and GyeongGi area.

安東을 中心한 慶北地域의 夏節期 氣溫特性(Ⅰ)

손련규,윤지홍,권성덕,김순철,권태형 安東大學校 安東地域社會開發硏究所 1991 安東開發硏究 Vol.2 No.1

The Andong region that includes Youngju, Bonghwa, Yechon, and Uisung is located in a basin bounded in the northeast and northwest by the Mt. Ranges of Taeback and Soback, and because of the closeness to Andong and Imha dams it has come to experience a large variation in climate. Due to an excessive amount of evaporation of moistures from open surfaces of these dams in the region it has not been possible to avoid heavy fogs, and because of the cooling effect accompanying the evaporation it has come to experience greater variation in temperature. The summer climate of the region may be characterized as follows : 1) The temperatures fall in the eastern coastal region that includes Uljin, Youngduk, and Pohang during the summer when there is a low pressure developed m the southern part of Tonghae following the pattern of high pressure in the north and low pressure in the south induced by the northeastern air current, but the temperatures fall frequently in the interior region that includes Andong, Yougju, Bonghwa, Yechon, Uisung, Sunsan, Kimchon, and Taegu when there is a low pressure region developed there following the pattern of high pressure in the east and low pressure in the west. 2) The temperatures fall equally in both the coastal and interior regions when there is a cold front, spread across east-west line, moving rapidly southward from central region due to a high pressure in the north and a low pressure in the south, and in the interior region the temperatures fall quite rapidly-this trend continues for the next two to three days. 3) The highest temperature during the summer in Kyungbuk region is due to wind effect that may have been resulted from the Foehn-phenomena with the Taeback Mt. Range as boundry. 4) The temperature rises when daily variation is of the pattern of A or B, but the temperature falls when the daily variation is of the pattern C or D. The temperatures fall in the western coast and rise in the interior region when the high pressure region forms a tounge pattern with the axis along the eastern coast. When the axis of the high pressure region is along the western coast, the temperatures rise in both regions, and the amount of rise is comparable, thus creating the pattern E. These five patterns of variation may be considered as the characteristics of the summer weather in the Kyungbuk region.

Strontium Barium Niobate 단결정에서 광굴절 부피격자를 이용한 동적 광편향

소지영,이권연 순천대학교 공업기술연구소 1997 工業技術硏究所論文集 Vol.11 No.-

In this paper, we report the results of a theoretical and experimental investigation of a dynamic photorefractive deflector. This device is based on the diffraction from a dynamic volume grating photoinduced in Cedoped strontium barium niobate(Sr_0.6Bα_0.4Nb_2O_6) single crystal by the interference of two writing beams. The diffraction properties of dynamic volume gratings, including the effect of additional two - beam coupling, are also considered.

전경대원에서 발생한 결핵의 임상 양상

문창기,박상준,조민구,김영중,김소연,김윤권,정준오,안석진,김은실,서승오,김지훈,최원제,이윤영,박형기,최규영,김현근 대한감염학회 2006 감염과 화학요법 Vol.38 No.6

Background: The purpose of this study was to document the incidence and clinical characteristics of patients with tuberculosis (TB) in combat and auxiliary police, living in a group, in Korea where the incidence rate of active TB in a general population is higher than in Western countries. Materials and Methods:We retrospectively reviewed the medical records of all tuberculosis patients diagnosed at National Police Hospital from January 2002 through December 2004. Results:In 2002-2004, a total of 156 cases of tuberculosis were identified with the mean (Standard deviation) age of 20.6 (±1.0) years. Of these, 134 (85.9%) patients were registered as new cases, 11 (7.1%) as relapse, 2 (1.3%) as failure, 5 (3.1%) as treatment-after-default cases whereas 4 (2.6 %) patients were not included in any categories. Average annual new TB rate and smear-positive TB rate were 86.5/10^(5) and 17.4/10^(5) person-years, respectively. In 12 of 31 smear-positive cases, time from onset of symptoms to diagnosis was more than 30 days. Two multidrug-resistance TB cases were identified and two suspected outbreak episodes of TB had occurred during 3 years. Conclusion:There was no statistically significant difference in the incidence rate of new cases of TB between the general population aged 20 to 29 years and combat and auxiliary police in Korea. 배경 : 국내 결핵의 발생은 감소 추세에 있으나 여전히 후진국형 발생양상을 보이고 있다. 특히 집단생활을 하는 젊은이들에서 발생하는 결핵의 유행이 간헐적으로 알려지고 있어 우려를 낳고 있다. 이에 저자들은 최근 전경대원의 결핵 발병 양상에 대해 알아보고자 본 연구를 시행하였다. 재료 및 방법 : 2002년 1월부터 2004년 12월까지 3년간 경찰병원에서 결핵 진료를 받은 전경대원의 의무기록을 후향적으로 분석하여 연도별 결핵 신환발생률, 도말양성결핵 신환율, 진단 지연, 집단발병, 다제내성결핵을 조사하였다. 결과 : 연도별 결핵 신환자 수(10만명당 발생추정치)는 2002년 50명(83.6명), 2003년 42명(83.7명), 2004년 42명(93.5명)이었고 도말양성 폐결핵 신환자 수는 2002년 10명(16.7명), 2003년 11명(21.9명), 2004년 6명(13.4명)이었다. 3년간 도말양성 폐결핵 환자는 31명이 있었고 그 중 12명은 호흡기 증상 발생 30일이 지나서 진단을 받았다. 다제내성 결핵은 2명이 있었으며 결핵의 집단발병이 의심되는 사례는 2차례 있었다. 결론 : 전경대원과 20-29세 연령군 일반인의 결핵 신환발생률, 도말양성 폐결핵 발생률의 통계적으로 유의한 차이는 없었다.

정신분열병의 유전적 고위험군에서 인지, 정서 및 사회기능 연구

이경진,위휘,유소영,이애라,송지연,하태현,홍경수,김명선,권준수 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.1

Objectives : Vulnerability marker in biological relatives of schizophrenia may be very useful in identifying the propensity for the development of schizophrenia. This study suggests that the relatives at risk for genetically developing schizophrenia have impairments in several domains of cognition, social function and affective function as a vulnerability marker. Methods : A neurocognitive function test, a social function test and an affective function test were administered to fifteen healthy relatives from families with two or more patients with schizophrenia (geneticallly high risk subjects). Fifteen healthy controls matched for age and gender were recruited in this study. Results : Compared to the control subject, the genetic high risk subjects performed significantly more poorly in the selective attention and recall memory of neurocognitive function. The high dsk subjects also had lower scores in independence-performance and independence-competence of the social function test and emotion control of the affective function test. Conclusion : Selective attention, recall memory, independence-performance, independence-competence and emotion control ability may be a valuable marker for genetic study of schizophrenia.

11β-수산화효소 결핍에 의한 선천성 부신증식증 1예

류옥현,류혜진,박수연,권순범,박상수,김희영,이계원,서지아,오정헌,김신곤,김난희,최경묵,백세현,최동섭 대한내분비학회 2004 Endocrinology and metabolism Vol.19 No.1

저자들은 국내에서 처음으로 음핵 비대와 지속적인 질출혈을 주소로 내원한 19세 여성에서 고혈압이 동반되지 않으면서 11 -수산화효소 결핍으로 인한 선천성부신증식증을 경험하였기에 문헌 고찰과 함께 이를 보고하는 바이다. Congenital adrenal hyperplasia refers to a group of autosomal recessive disorders that is defective in the synthesis of cortisol. The enzymes most often affected are 21-hydroxylase and 11 - hydroxylase. The low levels of cortisol stimulate the pituitary gland to release ACTH. Chronic elevation of the ACTH level causes bilateral adrenal hyperplasia and a secondary increase in androgen formation. We examined a 19 year-old woman presented with clitoral hypertrophy and vaginal spotting. The subjects basal level of serum cortisol was low, but the serum levels of ACTH, 17a-hydroxyprogesterone, deoxy-corticosterone were elevated. The urinary excretions of 17-ketosteroids and 17-hydroxycorticosteroids were also increased. The karyotyping study and transrectal ultrasonography showed normal findings. The patient underwent clitoris reduction surgery and received hydrocortisone. To the best of our knowledge, this is the first case of 11 -hydroxylase deficiency in Korea (J Kor Soc Endocrinol 19:58∼63, 2004).