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김여주 ( Yeo-ju Kim ),장종화 ( Jong-hwa Jang ),조자원 ( Ja-won Cho ) 한국치위생학회 2020 한국치위생학회지 Vol.20 No.6
Objectives: This study aimed to analyze the educational needs for geriatric dental hygiene and provide basic data for developing standard curricula for geriatric hygiene. Methods: To investigate the educational needs for geriatric dental hygiene, 212 students from dental hygiene departments and 205 dental hygienists engaged in clinical practice were enrolled. Results: Among the educational needs for geriatric dental hygiene, Geriatric oral health issues category was the highest with 4.06 points for students and 4.05 points for dental hygienists. Students who completed a geriatric dental hygiene course had higher scores for the following sub-domains compared to those who did not: need for geriatric dental hygiene-related theoretical education (p=0.002), needs for practice education with elderly people (p=0.001), and confidence in performing oral healthcare for elderly people after graduation (p< 0.001). Meanwhile, clinical dental hygienists who not completed geriatric-related courses had higher scores for, need for geriatric dental hygiene-related theoretical education, need for practice education with elderly people, and confidence in performing oral healthcare for elderly people. but, there was no significant difference (p >0.05). Conclusions: The results of this study showed that students and dental hygienists had high educational needs for geriatric dental hygiene. In particular, there was a high demand for education related to Geriatric oral health issues as well as Geriatric dental hygiene care and skills
A CLINICOSTATISTICAL STUDY OF NON-ODONTOGENIC CYSTS : THE EXPERIENCE OVER 10 YEARS
김수관(Su Gwan Kim),여환호(Hwan Ho Yeo),정종훈(Jong Hown Jeong) 대한구강악안면외과학회 1999 대한구강악안면외과학회지 Vol.25 No.1
본 연구는 1987년 1월부터 1997년 9월까지 본과에 내원하여 조직검사 시행결과 비치성낭종으로 진단된 90명의 환자에서 각 비치성낭종의 연령분포, 성별비, 발생분포, 임상증상, 치료법을 조사하여 다음과 같은 결과를 얻었다. 1. 비치성낭종 환자의 빈도는 총 402명의 낭종환자중 90명 (22.4%)으로 나타났다. 2. 총 비치성낭종 환자의 연령분포는 7-77세이고, 평균연령은 36세였다. 3. 가장 흔한 증상은 무통성의 종창 (62.2%)이었다. 4. 호발부위는 하순 (17.8%), 협점막 (15.6%), 상악동 (15.6%)의 순이었다. 5. 모든 치료는 외과적 절제술을 시행하였다.
김여주 ( Yeo-ju Kim ),장종화 ( Jong-hwa Jang ),조자원 ( Ja-won Cho ) 한국치위생학회 2020 한국치위생학회지 Vol.20 No.6
Objectives: This study aimed to analyze the current status and educational contents of the geriatric-related curriculum in dental hygiene departments at colleges across the country. Methods: To analyze the current status of geriatric curriculum, it was investigated by searching the websites of colleges across the country where dental hygiene (curriculum) department was available. Furthermore, a literature review of domestic and foreign textbooks related to geriatric dental hygiene was conducted to analyze the contents of geriatric dental hygiene curriculum. Results: Among colleges that offer dental hygiene (curriculum) department, 8 four-year and 12 three-year colleges (24.4%) offered geriatric dental hygiene courses. A comparison of the contents of the textbooks titled “Geriatric dental hygiene” published by Goonja, Daehan Narae, and Komoonsa showed that basic contents such as the characteristics, health problems, and oral health problems of elderly -people were described in the same context. However, there was a difference in the volume and importance of the concerned contents also. Conclusions: Universities and related organizations which offer dental hygiene curriculum should continue to conduct studies for the development of geriatric hygiene curricula. Moreover, heightened efforts are needed to ensure that geriatric dental hygiene education is more systematically offered.
방전 플라즈마 소결법에 의한 ZnS 나노입자의 소결과 광학적 특성
김창일,김유비,여서영,홍연우,윤지선,박운익,정영훈,조정호,백종후,Kim, Chang-Il,Kim, You-Bi,Yeo, Seo-Yeong,Hong, Youn-Woo,Yun, Ji-Sun,Park, Woon-Ik,Jeong, Young-Hun,Cho, Jeong-Ho,Paik, Jong-Hoo 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.6
Zinc sulphide (ZnS) nanoparticles were fabricated by hydrothermal synthesis at $180^{\circ}C$ for 12 h. Two kinds of ZnS powder (hydrothermal synthesized ZnS and commercial ZnS) were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM) for phase and microstructure, respectively. The XRD patterns showed that all ZnS nanoparticles have a sphalerite (cubic) structure. The nanoparticles of two different ZnS powders were sintered by spark plasma sintering. The sintered ZnS were analyzed by XRD, SEM, and FT-IR. We found that the transmittance of the infrared region is highly dependent on the density and crystal structure of sintered ZnS and the purity of the starting ZnS powder.
메조공극 흡착제를 이용한 상수원수내 맛 · 냄새 유발물질 제거특성 평가
김종두(Jong-Doo Kim),박철휘(Chul-Hwi Park),윤여복(Yeo-Bog Yun),이대성(Dae-Sung Lee),김효전(Hyo-Jeon Kim),강석태(Seok-Tae Kang) 大韓環境工學會 2017 대한환경공학회지 Vol.39 No.1
본 연구의 목적은 메조공극 흡착제(Meso-Porous Adsorbent, MPA)에 대한 흡착특성을 평가하고, 상수원수 내 맛 · 냄새유발물질인 geosmin에 대한 흡착제거 특성을 회분식 실험을 통해 평가하는데 있다. 등온흡착에 대한 실험결과는 일반적으로 적용되고 있는 Langmuir식과 Freundlich식을 이용하여 분석하였으며, MPA는 Langmuir식과 Freundlich식 모두 잘 따르는 것으로 나타났다. 그리고 흡착속도 평가를 위해 1차 속도식과 2차 속도식을 각각 적용하였다. 본 흡착특성 평가결과 MPA를 이용할 경우 기존 입상활성탄에 비해 최대 흡착량이 7배 가량 낮은 것으로 나타났으나 1차 속도식 기준으로 흡착속도는 11배 이상 빠른 것으로 나타났다. 따라서 MPA를 정수장에 적용할 경우 짧은 EBCT 조건에서도 효과적으로 상수원수 내 geosmin을 제거할 수 있을 것으로 판단되며, 활성탄 공정에 비해 재생주기가 짧을 것으로 판단된다. The objective of this study was to evaluate the characteristic of adsorption by using a meso-porous adsorbent (MPA), and investigate the removal efficiency of geosmin which taste and odor causing compounds in drinking water supplies through batch test. The results for the adsorption isotherm was analyzed by using the Langmuir equation and Freundlich equation, generally being applied. And the study showed that the both Langmuir and Freundlich equation explains the results better. Both of pseudo-firstorder model and pseudo-second-order model were respectively applied for evaluation of kinetic sorption property of geosmin onto MPA. The adsorption experiment results using MPA showed that maximum adsorption capacity of MPA was lower 7 times than that of GAC, and adsorption rate of MPA was faster 11 times than that of GAC, on the basis of pseudo-first-order model. Therefore, it was determined that MPA was effectively able to remove geosmin in drinking water supplies in short EBCT condition, but regeneration cycle in MAP process was shorter than that in conventional process.