• 대한치과보철학회지
• /
• 제39권3호
• /
• pp.243-249
• /
• 2001

Statement of the problem. The interest in all-ceramic restorations has increased as more techniques have become available. With the introduction of machinable dental ceramics and CAD/CAM systems or Copy-milling systems there is a need for evaluating the quality levels of these new fabrication techniques. Purpose. This study was to evaluate the fitting accuracy of machined all-ceramic crowns made out of an industrially prefabricated feldspathic porcelain. Material and Methods. Three master models with different cutting depth (0.8mm/1.0mm/1.2mm)were produced using a palladium-silver alloy. A total of 36 working dies, 12 of each form, was used for the modellation of prototype resin copings and 36 additional crowns, 12 of each cutting depth, were produced by using the $CEREC^{(R)}2$ system for all crowns. The maginal fit of all 72 crowns was then evaluated on their respective master die at 54 circularly staggered points of measurement per crown under a fixation pressure of 30 N by using a computerized video image system. Results. The medians of the copy-milled $CELAY^{(R)}$ crowns ranged from 29 to $36{\mu}m$. The highest value for the marginal gap was found in group B (cutting depth 1.0mm) at $107{\mu}m$. The median for the $CEREC^{(R)}2$ crowns was found between 43.5 and $70{\mu}m$. The maximum values for all three groups ranged from $181{\mu}m$ to $286{\mu}m$. With $286{\mu}m$ the highest value for marginal gap was found in group C. the Kruskal-Wallis test and multiple comparisons analysis procedure revealed a significant influence of the production technique on the marginal fit in all three groups (p<0,02). Conclusion. 1. The $CELAY^{(R)}$ system is capable to produce all-ceramic crowns with a significantly better marginal fit than the $CEREC^{(R)}2$ system. 2. As far as premolar crowns produced with the $CEREC^{(R)}2$ system are concerned, the cutting depth has a significant influence on fitting accuracy. 3. The production of crowns with an acceptable marginal fit is possible with both systems. However, adhesive luting is recommended for milled feldspathic porcelain crowns.

• 성인간호학회지
• /
• 제13권3호
• /
• pp.397-408
• /
• 2001

Currently, breast cancer ranks third among women' s cancers, and as its incidence is increasing, the incidence age is also becoming lower. Therefore it is necessary to address breast cancer for women in their twenties. As there is no way presently to prevent breast cancer, it is imperative that women take available interventions against predisposing factors. It is thus advisable that women acquire the necessary skills to recognize their own health status. The purposes of this study were to identify the effects of education on breast self-examination (BSE) through supportive education among college women during the period from August 2000 to February 2001, and to attempt to design an effective BSE educational program. The first class was implemented through lectures, pamphlets, videotapes, breast palpation on cloths, demonstration and practice for identification of breast masses through palpation using breast model. Supportive education was implemented bimonthly to the experimental group, and effects of the education between experimental and control groups were compared 6 months later. The results of this study are summarized as follows: 1. The effects on supportive education of college women in BSE 1) The mean score of retained knowledge about breast cancer and BSE was 30.88 in the experimental group, and 29.66 in the control group and significantly greater in the experimental group than in the control group (t= -2.062, p= 0.041). 2) Frequency of BSE practice was significantly greater in the experimental group than in the control group($\chi^2=0.045$, p=0,012). 3) The mean accuracy score in BSE practice was 19.10 in the experimental group, and 18.29 in the control group; accuracy was higher in the experimental group than in the control(t= -2.035, p= 0.444). 4) The mean score of self-efficacy was 35.05 in the experimental group, and 31.22 in the control group. The experimental group mean score was higher(t=-3.016, p=0.003). 2. There was a statistically significant correlation between self-efficacy and accuracy of BSE(r=0.447, p=0.000), knowledge of breast cancer and BSE(r= 0.306, p=0.000) and frequency of BSE(r=0,259, p=0,002) but no significant correlation between knowledge of breast cancer and BSE and frequency of BSE (r=0.071, p=0.403). On the basis of this study, periodic supportive education can increase knowledge of breast cancer and BSE, frequency of BSE, accuracy of BSE and self-efficacy. Suggestions: 1. There is a need to compare the effects of individual programs to acquire BSE behaviors in the young. 2. Further research is needed to test the continuity of the effects of BSE education.

• 대한물리치료과학회지
• /
• 제5권1호
• /
• pp.557-571
• /
• 1998

The purpose of the study is (i) to investigate the operating situation of physical therapy department in public health centers, (ii) to analyze the difference of elderly satisfaction from non-elderly satisfaction of physical therapy services among the public health center visitors, and finally (iii) to suggest facilitating improvement on programs that can supply the elderly health service through public health centers. A questionnaire survey was carried out 212 patients of 25 public health center in Seoul, Korea from 15 July to 10 August 1996. Major results of the study are as follows : 1. Among the respondents. the largest group was the elderly who are over 65 years old (72.6%). 2. The averge of general patients' satisfaction for physical therapy services was 3.98, especially fee of treatment(4.76), attitude of physical therapist(4.33), and reliance of physical therapist(4.20) were higher by 5-score Likert scale. 3. The correlation factors with general patients' satisfaction were process of treatment (r =.6301). results of treatment(r=. 6186), and guide facilities(r=.5999). 4. The results of multiple-regression analysis between general patients' satisfaction and affecting factors identify following variables as the statically significant determinants : general stisfaction comparing with other physical therapy services, physical therapy services using forwardly, fee of treatment. 5. There was no significant defference between elderly and non-elderly patients' satisfaction of physical therapy service, except attitude of physical therapist(t=-2.07), explanation of treatment for disease(t=-2.19), fee of treatment(t=6.29).

• 한국어류학회지
• /
• 제29권1호
• /
• pp.69-74
• /
• 2017

본 연구는 우리나라 주요 수산자원 중 하나인 민어의 이석을 이용하여 민어의 연령과 성장을 추정하였다. 연구에 사용된 민어의 이석은 2015년 8월부터 2016년 7월까지 서해 남부 연안에서 안강망으로 어획되어 양육된 것으로 총 339개체 중, 연령사정에 이용된 개체수는 327미였다. 연령은 민어는 불투명대에서 투명대로 이행하는 지점을 윤문으로 간주하였으며, 윤문형성시기는 3~6월(주형성시기 6월), 산란기는 9~10월 (주산란기 9월)로 추정되어 초륜이 형성되기까지의 기간은 0.75년으로 나타났다. 최고 연령은 암컷 11세, 수컷 9세로 추정되었으며, 윤문이 형성될 시기의 평균 전장을 바탕으로 비선형 회귀방법으로 추정한 Von Bertalanffy 성장식은 $L_t=182.4(1-e^{-0.067(t+1.754)})$($R^2=0.96$)이었다.

• 대한소아치과학회지
• /
• 제28권2호
• /
• pp.316-322
• /
• 2001

감각신경아세포종으로 생후 1년 6개월부터 약 1년간 6주기의 화학요법과 생후 1년 6개월에 29회에 걸친 방사선 조사(AP 4540 R+LAT 1080 R : total 5620 R)를 받은 후, 후유증으로 상악치아 및 상악골의 발육장애를 보이는 10세 남아의 임상적, 방사선학적 관찰 및 치료 후 다음과 같은 지견을 얻었기에 보고하는 바이다. 1. 성장중인 어린이에서 악성종양의 치료를 위한 방사선 조사는 연조직 및 경조직(골, 연골, 치아)등의 성장장애를 유발할 수 있으므로 시술 전 충분한 고려가 필요하다. 2. 치배의 손상은 치관 및 치근의 형성장애를 유발하고 이에 따라 치조골의 성장장애가 나타나므로 치근이 없는 치아일지라도 치조골의 흡수를 억제하기 위하여 hawley type의 부분의치 등을 이용하여 잔존시켜야 한다. 3. 향후 성장이 완료된 이후(만 18세 이상)에 무치근 치아 및 무치악 부위에 틀니(denture)나 임플란트 등의 보철수복이 필요할 것으로 여겨진다.

• 분석과학
• /
• 제29권6호
• /
• pp.277-282
• /
• 2016

영국약전(BP 2013), 미국약전(USP 39) 그리고 대한민국약전 (KP XI)에 디오스민 원료의 정량법으로 HPLC법이 수재되어 있다. 그러나 위의 외국약전들에는 디오스민 제제의 정량법이 수재되어 있지 않으며 대한민국약전 (KP XI)에는 디오스민 캡슐의 정량법으로 HPLC법보다 덜 특이적인 자외가시부흡 광도측정법이 수재되어 있다. 이 실험에서는 최근의 추세에 따라 원료의 정량법과 같고 특이성이 좋은 HPLC 분석법으로 디오스민 캡슐의 정량법을 개발하였고 이를 검증하였다. HPLC분석법의 검증을 위해 직선성, 정밀성, 정확성, 시스템 적합성, 실험실내 정밀성과 완건성 실험을 실행하였다. 직선성은 결정계수($r^2$)가 0.999 이상으로 우수하였다. 일내 정밀도는 상대표준편차 0.15~0.29%, 일간 정밀도는 1.05~1.74%로, 회수율은 101.2~103.2%로 나타났다. 시스템적합성에서는 머무름시간 상대표준편차(RSD %) 0.37 %, 피크면적 상대표준편차(RSD%) 0.06%, 이론단수 평균값 3591.293 그리고 비대칭계수 평균값 1.35을 나타내었다. 개발한 시험법을 이용하여 시중 유통 중인 디오스민 캡슐 중 디오스민의 함량측정에 응용하였다. 개발된 시험법은 대한민국약전의 개정에 기여할 것이다.

• 대한본초학회지
• /
• 제29권6호
• /
• pp.35-43
• /
• 2014

Objectives : Official Arisaematis Rhizoma is described only three species, Arisaema amurnse, Arisaema erubescens, and Arisaema heterophyllum, in national Pharmacopoeia. However, other Arisaema species, Arisaema ringens, Arisaema takesimense and Arisaema serratum, also have been distributed as an inauthentic Arisaematis Rhizoma in the herbal market. To develop a reliable molecular authentication method for Arisaematis Rhizoma in species level, we analyzed DNA barcode regions using six Arisaema species. Methods : Thirty-eight samples of six Arisaema plants species (A. amurense, A. amurense f. serratum, A. heterophyllum, A. takesimense, and A. serratum) were collected from different habitate and nucleotide sequences of DNA barcode regions (rDNA-ITS, matK, and rbcL gene) were analyzed after PCR amplification. The species-specific sequences and phylogenetic relations were estimated using entire sequences of three DNA barcodes based on the analysis of ClastalW and UPGMA, respectively. Results : The comparative analysis of DNA barcode sequences were revealed inter-species specific nucleotides to distinguish the medicinal plant of Arisaema Rhizoma in species levels excluding between A. amurense and its subspecies (A. amurense f. serratum) and A. takesimense and A. serratum, respectively. However, we obtained sequence differences enough to discriminate authentic and inauthentic Arisaematis Rhizoma. Therefore, we suggest that these SNP type molecular genetic markers were an reliable method avaliable to identify official herbal medicines. Conclusions : These marker nucleotides could be useful to identify the official herbal medicines by providing definitive information that can identify original medicinal plant and distinguish from inauthentic adulterants and substitutes.

• Natural Product Sciences
• /
• 제16권4호
• /
• pp.233-238
• /
• 2010

In order to facilitate the quality control of Artemisia capillaris, a simple, accurate and reliable HPLC method was developed for the simultaneous determination of the six bioactive compounds: scopolin (1), chlorogenic acid (2), 2,4-dihydroxy-6-methoxyacetophenone 4-glycoside (3), hyperoside (4), isorhamnetin 3-Orobinobioside (5), and scoparone (6), which were selected as the chemical markers of A. capillaris. Separation was achieved on an Agilent Eclipse XDB-C18 column with a gradient solvent system of 0.1% trifluoroacetic acid aqueous-acetonitrile at a flow-rate of 1.0 mL/min and detected at 254 nm. All six calibration curves showed good linearity ($R^2$ > 0.998). A simple reversed phase HPLC method was developed for extracting pharmacologically active compounds scopolin, chlorogenic acid, 2,4-dihydroxy-6-methoxyacetophenone 4-glycoside, hyperoside, isorhamnetin 3-O-robinobioside, and scoparone from A. capillaris using a binary gradient of acetonitrile : 0.1% trifluoroacetic acid with UV detection at 254 nm. The scopolin (1), chlorogenic acid (2), 2,4-dihydroxy-6-methoxyacetophenone 4-glycoside (3), hyperoside (4), isorhamnetin 3-O-robinobioside (5), and scoparone (6) contents of the herb of A. capillaris collected from fifteen district markets in Korea were 0.00~0.90 mg/g, 0.06~7.29 mg/g, 0.06~0.91 mg/g, 0.07~5.05 mg/g, 0.42~13.11 mg/g, and 1.11~29.82 mg/g, respectively. The results demonstrated that this method is simple and reliable for the quality control of A. capillaris.

• Journal of Korean Biological Nursing Science
• /
• 제9권2호
• /
• pp.105-117
• /
• 2007

Purpose: The purpose of this study was two folds: first, to identify the level of self care behavior of the hemodialysis patients and second, to find the correlation between the self care behavior and the physiologic indices. Method: The subjects were 52 hemodialysis patients, male and female, who have regularly received hemodialysis dialysis at the Dialysis Room in a leading teaching hospital, Seoul. The patients responded to the self care behavior questionnaires including their socio-demographic characteristics. The respondents have regularly recorded the self care log book. The physiologic indices, clinical characteristics related to the disease and hemodialysis were collected by the chart review. Result: The mean score of the self care behavior was 3.46. The mean score of the self care behavior on categories demonstrated as follows: medication 4.29, fistula management 4.13, management of physical problem 3.71, diet 3.28, exercise and rest 3.22, blood pressure and body weight management 2.97 and social adjustment 2.05 in order. Thirty patients managed discomfort of their fistula. Eleven patients took exercise for 0.5-1 hr/week. Thirty patients measured their body weight daily and thirty two measured their blood pressure daily. The score of self care behavior was significantly correlated with the mean weight gains between the dialysis sessions(r=-.312, p=.05). The mean weight gains between dialysis sessions was found to be high as the level of serum phosphorus and potassium increased(r=-.316, p=.05, r=-.465, p=.01). Conclusion: The result suggests that nursing intervention to the hemodialysis patients to improve self care behavior should be encouraged and further developed.

• 미생물학회지
• /
• 제42권3호
• /
• pp.185-194
• /
• 2006

본 연구는 치근관 감염병소에서 세균을 분리 및 동정하고, 8종의 항생제들에 대한 분리균주들의 감수성을 조사하기 위하여 실시하였다. 세균에 감염된 27개 치아의 괴사된 치근부 치부소직을 바비드 브로치나 페이퍼 포인트로 무균적으로 채취하였다. 치수가 채취된 부위의 바비드 브로치와 페이퍼 포인트를 500 ul의 $1{\times}PBS$ 용액에 담아 잘 혼합하고, 이를 5% 양혈이 포함된 BHI 한천배지(혈액한천배지)에 도말하여 $37^{\circ}C$ 혐기성 배양기에서 2-5일 동안 배양하였다. 혈액한천배지에서 자라난 세균은 16S rRNA 유전자(rDNA) 염기서열결정법을 이용하여 종수준으로 동정하였다. 이들 균주들의 8종 항상제에 대한 감수성은 최소성장억제농도 측정법으로 조사하였다. 본 연구결과, 101개의 세균 집락이 생겼고, Streptococcus spp. (29.7%)와 Actinomyces spp. (21.8%)가 가장 많이 검출되었다. 이들 균주들 중 9균주는 실험 도중 소실되거나 액체배지에 자라지 않아서 항생제 감수성 심험에서는 제외되었다. 각 항생제들에 대한 감수성을 조사한 결과, 분리된 균주들 중 80(87.0%) 균주가 클린다마이신에 감수성을 보였으며, 세프록심 아세틸과 테트라사이클린에 69(75.0%)가, 오그멘틴에 66(71.7%) 균주가, 페니실린 G에 63(68.5%) 균주가, 에리트로마이신에 61(66.3%) 균주가, 아목시실린에 41(44.6%) 균주가 감수성을 보였다. 그러나 시플록사신에는 29(31.5%) 균주만이 감수성을 보였다. 이러한 8종 항생제에 대한 균주들의 감수성 양상은 세균 종의 종류보다는 분리된 숙주에 따라 차이가 있었다. 이러한 결과는 치근관 감염질환의 치료에 항생제가 필요할 경우 항생제 감수성검사를 병행하는 것이 효과적임을 시사한다.