잇몸질환은 어떻게 관리해야 하는가? (1)

유근박(Gun Bak Rheu) 한국강구조학회 2009 韓國鋼構造學會誌 Vol.21 No.4

잇몸질환은 어떻게 관리해야 하는가? (2)

유근박(Gun Bak Rheu) 한국강구조학회 2009 韓國鋼構造學會誌 Vol.21 No.5

Risk assessment for clinical attachment loss of periodontal tissue in Korean adults

Rheu, Gun-Bak,Ji, Suk,Ryu, Jae-Jun,Lee, Jung-Bok,Shin, Chol,Lee, Jeong-Yol,Huh, Jung-Bo,Shin, Sang-Wan The Korean Academy of Prosthodonitics 2011 The Journal of Advanced Prosthodontics Vol.3 No.1

PURPOSE. The purpose of this study was to assess the prevalence and extent of clinical attachment loss of periodontal tissue and to find out variables related to clinical attachment loss (CAL) in Korean adults older than 40 years of age. MATERIALS AND METHODS. Data were collected from 2,519 subjects who were part of a cohort study conducted in Ansan city by Korea University Medical School for Korean Genome project. Age, sex, smoking, drinking, fast glucose, blood pressure, obesity and total cholesterol levels were examined. The oral examination included probing pocket depth, gingival recession and CAL of Ramford's teeth. The severity of periodontitis was classified based on the mean value of CAL. The relationship between each risk factor and the severity of CAL was independently estimated using the chi-square test, the test or one-way ANOVA. Multiple regression analysis was used to determine the significance of each factor in the periodontal disease. RESULTS. The prevalences of clinical attachment between 1 and 3 mm, between 3 and < 5 mm, and ${\geq}$ 5 mm were 80.27%, 16.75% and < 1%, respectively. Although the univariate analysis showed age, gender, smoking, fasting glucose, blood pressure and total cholesterol levels were significantly related to the severity of CAL, multiple regression analysis indicated that age (P < .0001), gender (P < .0001) and smoking (P < .05) were only significantly related. CONCLUSION. Older age, male gender and smoking were significant risk factor for the increase of CAL, and these may be useful indicators of periodontitis high-risk groups.

아토피 피부염 외치치료제 처방 개발을 위한 실험적 연구

김건우 ( Gun Woo Kim ),박지원 ( Ji Won Bak ),심부용 ( Boo Yong Sim ),김동희 ( Dong Hee Kim ) 대한본초학회 2014 大韓本草學會誌 Vol.29 No.4

Atotang was composed of 10 kinds of traditional medicinal herb. This research was performed to examine biological effects of Atotang for the development of prescription on atopic dermatitis. Methods : Atotang was extracted with 80% EtOH. Free radical scavenging assay has tested for anti-oxidative activity as well as the contents of total polyphenol. We observed the production of ROS, nitric oxide(NO) and the inflammatory cytokines such as interleukin-1beta(IL-β), IL-6, tumor necrosis factor-alpha(TNF-α), Prostaglandin E2(PGE2) in Raw 264.7 cells stimulated by LPS. We used Disc diffusion method to investigate antibacterial activity on Candida albicans, Staphylococcus aureus and Staphylococcus epidermis. Result : Content of total phenolic compound of Atotang was 36.3 mg/g ext. DPPH and ABTS scavenging activities were 77% and 46% at 200 ug/ml respectively, showing dose-dependent increase. The amounts of ROS and NO in RAW 264.7 cells were decreased by 30% and 19% at 200 ug/ml, respectively, showing dose-dependent decrease. The prodcution of IL-1beta, IL-6 and TNF-alpha in RAW 264.7 cells were decreased dose-dependently by 81%, 67%, and 20% at 200 ug/ml, respectively. Atotang was reduced LPS-stimulated production of PGE2 by 33%. Atotang on C. albicans, S. aureus and S. epidermis was selected by a disc diffusion method and inhibition effect of the Atotang on the growth of S. epidermis was the greatest. Conclusion : The results indicated that Atotang showed biological activities showing anti-oxidant, anti-inflammatory and antibacterial effects. Based on these results, it is concluded that Atotang can be applied to the prescription on atopic dermatitis.

레이저 레인지 파인더와 2½D 지도 기반의 선분/호 개체를 이용한 이동 로봇의 실외 위치 추정 알고리즘

윤건우(Gun Woo Yoon),김진백(Jin Bak Kim),김병국(Byung Kook Kim) 제어로봇시스템학회 2012 제어·로봇·시스템학회 논문지 Vol.18 No.7

An accurate outdoor localization method using line/arc features is suggested for mobile robots with LRFs (Laser Range Finders) and odometry. Localization is a key process for outdoor mobile robots which are used for autonomous navigation, exploration and so on. In this paper, an accurate pose correction algorithm is proposed for mobile robots using LRFs, which use three feature types: line, circle, and arc. Using this method we can reduce the number of singular cases that robots couldn"t find their pose. Finally we have got simulation results to validate the proposed algorithm.

VDT작업자의 자각증상에 영향을 미치는 요인

이중근,이연수,노재훈,박계열,백기주 大韓産業醫學會 1997 대한직업환경의학회지 Vol.9 No.1

In order to investigate symptoms prevalence related to visual display terminal(VDT) syndrome, and to evaluate the variables affecting the development of the VDT syndrome, a questionnaire survey was conducted on 119(92 men and 27 women) VDT operators who had been engaged in one plant design company in seoul. The results were as follows : The average age of questionnaire respondents was 30. The average years of service were 4.3 years, and the working hours per day with VDT for half of them were more than 4 hours with the average being about 4.7 hours. The majority of subjects(71 persons) were working at computer aided design(CAD) or computer programming tasks. Subjective symptoms of VDT syndrome were divided into 4 groups with musculoskeletal, eye, skin, and industrial fatigue according to their major affected organ. A high incidence of complaints of eye discomfort was observed. In the 3 subgroups of industrial fatigue symptom, the highest average group score was accounted for by 'dullness and sleepiness', followed by 'difficulty in concentration', 'bodily projection of fatigue' in the order of sequence, suggesting the heavier mental stress of VDT work rather than physical burden. Relationship among these 4 groups of symptoms showed statistically significant correlations one another. This result suggests that VDT syndrome is a multi-organ disease composed of these 4 symptom groups which were commonly caused by the use of VDT. Multiple regression analysis were used to examine the relationship between risk factors and these symptom groups of VDT syndrome. As the result of analysis, the most important risk factor for VDT syndrome was the average daily VDT working hours. The longer was VDT working hours, the higher was symptom prevalence of VDT syndrome. In addition, daily total working hours including VDT working hours and shift of work also affected the health of VDT users. In order to protect workers from VDT syndrome, it is urgently required to implement standard management recommendations including restriction of VDT working hours and allowance of more sufficient resting time for VDT workers.

放線菌 J-952S가 生産하는 Amylase에 關한 硏究 (第1報) 酵素의 精製 및 性質檢討

李鍾根(Jong Gun Lee),朴炯淑(Hyung Sook Bak) 부산대학교 인문학연구소 1980 코기토 Vol.19 No.-

The Effects of Physical Activity Programs on Physical Fitness, Blood Lipids, and Growth-Related Factors among Young Normal Weight and Obese Children

Hyong-Gon Bak(박형곤),Gun-Do Kim(김군도),Chan-Ho Park(박찬호) 한국생명과학회 2012 생명과학회지 Vol.22 No.3

본 연구는 비만유아 7명과 정상체중유아 7명을 대상으로 유아체육프로그램이 신체조성, 체력, 혈중지질 및 성장관련인자의 변화를 분석하기 위해 실시되었다. 본 연구에서 실시한 유아체육프로그램이 체지방량을 감량시키는데 효과적인 결과를 얻지 못하였지만 비만군과 정상체중군 모두 체력은 향상되는 것으로 나타났다. 그리고 정상체중유아들의 경우 HDL-C와 제지방량의 증가는 본 연구에서 실시한 유아체육프로그램이 성인기의 비만과 성인병 예방 측면에서 정상체중유아들에게 권장될 수 있는 것으로 사료된다. 또한 성장관련인자 IGF-I은 성장을 촉진하는 활성 물질로 성장호르몬 분비의 증가에 따라 IGF-I 농도 역시 상승한다. 본 연구에서도 정상체중군에서 긍정적인 효과가 나타나 유아체육프로그램이 성장기 유아의 성장호르몬의 분비를 활성화시키고 성장을 촉진시키며 신체발달을 증진시키는데 도움을 줄 수 있을 것으로 생각한다. This study was conducted to examine the effects of physical activity programs on young children’s body composition, physical fitness, blood lipids, and growth-related factors. Fourteen young male child subjects participated in this study. Experimental groups were divided into a young obese children group (OG; n=7) and a young normal weight children group (NG; n=7). The subjects performed supervised physical activity programs with moderate intensity for 12 weeks, 40 minutes per session, 3 times per week. The results of this study are as follows: HDL-C, growth hormone, and IGF-I were significantly increased in NG, but OG was showed no changes. Physical fitness was significantly increased in both NG and OG. This study demonstrated that physical activity programs have a positive effect on the prevention of obesity, as well as a positive effect on growth and development in young normal weight children. However, long-term follow-up studies are necessary to clarify the additive effect of exercise program with behavior modification in young obese children.

A Study on Enhancement of Local Disaster Prevention Capacity through Formation of Disaster Prevention Village

Kyoung Nam Kim,Gun Ju Kwon,Min Ho Bak 위기관리 이론과 실천 2011 Journal of Safety and Crisis Management Vol.1 No.1

The recognition on natural disasters was changed from "prevention" to "mitigation" and then the disaster response capacity at the regional level became an important factor. Korea's NEMA is driving the formation of a disaster free community as a national project. Therefore currently, we are in urgent need to vitalize the project. This study surveyed the theories related to the project, surveyed items in the project meaning, project necessity, project types and the relationship with the capacity of local disaster response. Also laws, administrative plans and organizations related to the project were reviewed for vitalizing the project. Especially the survey in the organization field included the Korea's CAIND(Citizen Corps Active in Disaster) and the establishment of local disaster response governance. Also the surveying of similar examples included the village formation projects derived by each governance department. As a result, this study shows a total of 7 vitalizing means in part 3. As a result, the vitalization projects are urgently in need of the preparation of law and institutions.

Baumann Skin Type in the Korean Male Population

( Young Bin Lee ),( Sung Ku Ahn ),( Gun Young Ahn ),( Hana Bak ),( Seung Phil Hong ),( Eun Jung Go ),( Chang Ook Park ),( Sang Eun Lee ),( Weon Ju Lee ),( Hyun-Chang Ko ),( Jee-Bum Lee ),( Hyung Joo K 대한피부과학회 2019 Annals of Dermatology Vol.31 No.6

Background: Research into the Baumann skin type (BST) has recently expanded, with growing interest in the development of an efficient and effective skin type classification system for better understanding of this skin condition. Objective: We aimed to identify male-specific skin type characteristics with investigation into the distribution of BST by age and region in the Korean male population and to determine the intrinsic and extrinsic factors related to skin type. Methods: A questionnaire was administered to collect information about age, region, working behavior, drinking behavior, smoking behavior, usual habit of sun protection, medical history, and the BST which consisted of four parameters; oily (O) or dry (D), sensitive (S) or resistant (R), pigmented (P) or non-pigmented (N), and wrinkled (W) or tight (T). Results: We surveyed 1,000 Korean males aged between 20 and 60 years who were divided equally by age and region. Of the total re- Background: Research into the Baumann skin type (BST) has recently expanded, with growing interest in the development of an efficient and effective skin type classification system for better understanding of this skin condition. Objective: We aimed to identify male-specific skin type characteristics with investigation into the distribution of BST by age and region in the Korean male population and to determine the intrinsic and extrinsic factors related to skin type. Methods: A questionnaire was administered to collect information about age, region, working behavior, drinking behavior, smoking behavior, usual habit of sun protection, medical history, and the BST which consisted of four parameters; oily (O) or dry (D), sensitive (S) or resistant (R), pigmented (P) or non-pigmented (N), and wrinkled (W) or tight (T). Results: We surveyed 1,000 Korean males aged between 20 and 60 years who were divided equally by age and region. Of the total respondents, OSNW type accounted for the largest percentage and ORPW type the lowest. In terms of Baumann parameters, O type was 53.5%, S type was 56.1%, N type was 84.4% and W type was 57.5%. Several behavioral factors were found to have various relationships with the skin type. Conclusion: The predominant skin type in the Korean male respondents was OSNW type, and the distribution of skin types with regards to age and region was reported to be distinct. Therefore, skin care should be customized based on detailed skin types considering the various environmental factors. (Ann Dermatol 31(6) 621∼630, 2019)