중장년 성인교정환자의 구강상태 및 치료양태에 관한 연구

이현정(Hyeon-Jung Lee),김진영(Jin-Young Kim),조진형(Jin-Hyoung Cho),황현식(Hyeon-Shik Hwang) 대한치과의사협회 2010 대한치과의사협회지 Vol.48 No.5

Orthodontic treatment for middle-aged patients has become more commonplace with various reasons including improved socioeconomic status. Understanding of oral status and treatment modalities of middle-aged patients is mandatory for accurate diagnosis and proper treatment planning. This study investigated 100 consecutive patients aged 40s and 50s and 100 aged 20s who had been examined and diagnosed at the Department of Orthodontics, Chonnam National University Dental Hospital. The results were obtained as follows; 1. Gender distribution showed female outnumbered male patients in young-aged adult patients, but middle-aged patients showed similar male and female distribution. 2. The major concern seeking orthodontic treatment was esthetics not only in young-aged but also in middle-aged adult patients, and a number of middle-aged patients were concerned about oral health as well. 3. Considerable number of middle-aged patients were referred by other dental specialties while young-aged adult patients were more self-motivated for orthodontic treatment. 4. Middle-aged adult patients had more missing teeth and periodontal disease than young-aged adults. 5. The most frequently-observed problem was dental spacing in middle-aged patients while dental crowding in young-aged adult patients. Middle-aged patients showed higher prevalence of deep overbite and overjet while most of young-aged adults presented opposite direction of problem in overbite and overjet. 6. Limited orthodontic treatment was required rather than comprehensive treatment in middle-aged patients, and the most common tooth moving area was anterior part of dentition in case of limited treatment. Need of interdisciplinary therapy with other dental specialties was more common in middle-aged patients. 7. Intervention of specific technique such as invisible TP, passive bracketing, passive wire bonding, and lingual orthodontics was more required in middle-aged patients. Considering that middle-aged patients have different characteristics than young-aged adults, the results of the present study suggest that different treatment modalities are required in middle-aged orthodontic patients in order to manage them properly and efficiently.

Trigger point를 利用한 口眼괘斜 患者 10例에 대한 臨床的 考察

鄭榮敦,李浚龜,金永一,朴泰均,辛泳一,黃載然,李賢,李秉烈 대전대학교 한의학연구소 2002 한의학연구소 논문집 Vol.10 No.2

From July 1th 2001 to October 31th 2001, the Clinical investigation studies were carried out 10 cases of patient with Bell's palsy using Trigger point treatment group, who had been treated in Han-seung Oriental Medical Clinic. The results were like below : 1. The distribution of sex : Male were 4cases, female were 6case and the female to male ratio was 1.5 : 1. 2. The distribution of contributing factor : Unknown reason was most predominant 4 cases, and then were revealed to labor too hard, menttal stress(3 cases), trauma·common cold(1 case) in turn. 3. The distribution of perid to fall ill : Under a week was the most number 6cases, and then were revealed a week under two weeks(3 cases), over two weeks(1 case) in turn. 4. About period of treatment : The Trigger point treatment group is shorter than the Acupuncture treatment group. 5. The distribution of grade on admission in descending order : GrⅠ was the most number and then GrⅡ, GrⅢ in turn. 6. The distribution of clinical symptoms on adimission : Mastoid pain was the most number 9 cases and then lacrimal gland disorder 8 cases, dysgeusia 4 cases, hyperacusis 2 cases, the others 2 cases in turn. 7. About effect of treatment : The Trigger point treatment group is more excellent than the Acupuncture treatment group. 8. The more patient age is young, the more effect of treatment was excellent, had nothing to do with both groups. 9. The more perid to fall ill is short, the more effect of treatment was excellent, had nothing to do with both groups. 10. About period of improved frontal belly : The Trigger point treatment group is more excellent than the Acupuncture treatment group.

The expression patterns of RANKL and OPG in murine tooth eruption

Hwang, Kyung-Mun,Kim, Eun-Jung,Kim, Hyun-Jung,,Kim, Young-Jin,Nam, Soon-Hyeun 大韓小兒齒科學會 2006 大韓小兒齒科學會誌 Vol.33 No.2

치아의 맹출은 치아기 (dental organ)와 치조골의 세포와 연관된 매우 복잡한 과정이다. 우선 치아 맹출이 일어나기 전에 파골세포가 치낭으로 집결하게 된다. 이러한 치낭의 역할은 파골세포와 조골세포의 상호작용으로 이루어 지는 골개조와 밀접한 관련이 있는데, 이는 치아 맹출과 연관된 많은 유전자들이 치낭에서 발현되기 때문이다. RANKL는 TNF ligand family로써 조골세포에 존재하며 파골세포의 형성 및 전구세포로 부터의 활성화를 유도한다. 이러한 RANKL은 OPG에 의해 그 작용이 억제되며 RANKL와 OPG의 상대적인 비율이 파골세포의 형성에 영향을 미친다. 또한 Runx2유전자의 변이는 조골세포의 분화와 활성에 차질을 가져오고 결국 RANKL/OPG pathway를 통해 파골세포 형성에 영향을 줄 수 있다. 치아의 발육 및 맹출에 미치는 RANKL 및 OPG의 영향을 알아보고 Runx2와의 연관성을 알아보기 위해 in situ hybridization 방법으로 태생 1, 3, 5, 7, 9, 11일된 쥐의 하악 및 제1대구치를 사용하여 실험을 실시한 결과 RANKL, OPG, Runx2의 mRNA가 태생 1일부터 11일까지 치낭 및 치아주위조직에 특성있게 나타났다. 이중 태생 5일에서 9일 사이에 RANKL 및 Runx2는 치아의 교합면측과 하방 치조골 부위의 발현이 강하게 나타난 반면 OPG는 약한 발현을 보였다. 이는 또한 파골세포의 활성부위를 알아보기 위해 TRAP염색을 실시하여 태생 5일에서 9일 사이에 최대의 활성화를 나타낸 결과와 연광성 있게 나타났다. RANKL, OPG, Runx2의 특성있는 발현양상들을 종합해 볼 때, 치아 맹출은 치낭, 치아기, 치조골 사이의 상호 작용을 통해 이루어 지며, 이는 치낭이 치아 맹출에 있어서 매우 중요하다는 것을 의미한다. 또한, 이러한 유전자들 (RANKL, OPG, Runx2) 이 치아의 맹출에 중요한 역할을 하는 것으로 사료된다. Tooth eruption is a complex and tightly regulated process that involves cells of the tooth organ and the surrounding alveolus. Osteoclast precursors must be recruited into the dental follicle prior to the onset of eruption. This function of dental follicle may be regarded as the ability of bone remodeling characterized by the interaction of osteoclasts and osteoblasts. This is because tooth eruption is a localized event in which many of the genes required for eruption are expressed in the dental follicle. RANKL is a membrane-bound protein that is a member of the TNF ligand family, which is present on bone marrow stromal cells and osteoblasts, and induces osteoclast formation and activation from precursor cell. The biologic effect of RANKL is inhibited by OPG and, in bone, the relative ratio of RANKL and OPG modulates osteoclastogenesis. To evaluate the roles of RANKL and OPG in tooth eruption and the relations with the expression pattern of Runx2, in situ hybridization was performed with mandibles of mice at postnatal stage 1, 3, 5, 7, 9 and 11. mRNA of RANKL, OPG, and Runx2 are expressed in dental follicle and surrounding tissue from P1 to 11. To determine the sites of osteoclastic activity duing tooth eruption, mandibles were dissected. Peak osteoclastic activity in alveolar bone along the occlusal and basal regions was observed from P5 to 9, with osteoclasts in these regions being large and strongly TRAP-positive. The specific spatic-temporal expression patterns of RANKL, OPG and Runx2 in our study suggest that tooth eruption could be progressed through the interactions of molecular signaling among dental follicle, dental organ and alveolar bone, furthermore it means that dental follicle is quite important in tooth eruption. In addition, it indicates that these genes (RANKL, OPG, and Runx2) play critical roles in tooth eruption.

연구논문 : 대학생들의 인터넷 중독에 영향을 미치는 요인에 대한 연구

권미영 ( Mi Young Kwon ),황지영 ( Ji Young Hwang ),정혜윤 ( Hye Yoon Jung ),송시형 ( Shi Hyeong Song ) 극동대학교 사회복지연구소 2013 글로벌사회복지연구 Vol.3 No.2

본 논문의 목적은 대학생의 인터넷 중독에 영향을 주는 요인에 대한 분석을 통해 대학생의 정신건강을 위한 공적프로그램 도입에 대한 함의를 제공하는 것이다. 분석자료는 을지대학교 강남 을지 병원 중독연구소에서 대학생 453명을 대상으로한 설문지이다. 설문조사에 사용된 설문지는 인터넷 중독을 측정하는 인터넷 중독 척도(Young척도), 불안을 측정하는 불안척도(STAI)와 우울을 측정하는 Beck의 우울척도(BDI)로 구성되었다. 분석결과 첫째, 연령 및 학년은 인터넷 중독에 유의미한 영향을 미쳤다. 둘째, 나이가 어릴수록, 학년이 낮을수록 불안과 우울에 빠지기 쉬웠다. 셋째, 무엇보다 불안이 대학생의 인터넷 중독에 가장 큰 영향을 미치는 요인이었다. The purpose of this research to suggest implications on introduction of public-program for college students` mental health through analysing the factors which impact on internet addiction of college students. The analysing data is questionnaire intended to 453 college students in Kang- Nam Eulji hospital addiction institute. The questionnaire consisted of internet addiction scale (Young-scale), anxiety scale (STAI) and depression scale (BDI). This study reveals three main findings. Firstly, age and grade have an effect on internet addiction. Second, the younger, the lower grade, they are likely to be depressed and anxiety. Third, most of all, the anxiety has the most effect on internet addiction of college students.

데스크탑 밀링머신의 고속 스핀들 설계 해석

장성현,황현영,정우영,홍정표,최영휴 한국공작기계학회 2009 한국공작기계학회 춘계학술대회논문집 Vol.2009 No.-

During a decade, there are many researches on microfactory which is the miniature, flexible, and efficient manufacturing system for the micro/meso scale machining device. Moreover many micro machine tool has developed in Japan, U.S., Europe, and Korea. Already we are developing a desktop milling machine with 380×450×450 ㎣ machine size for microfactory or BT (Bio technology) factory. In this study, we carried out the design analysis of a high speed spindle system for our desktop milling machine by using ADROS, which is our own developed S/W for dynamic design analysis of rotor systems. As the result, we obtained some analyzed dynamic characteristics of a spindle system, such as natural frequency, whirl frequency, critical speed, and harmonic response.

서울의 PPNG 발생 빈도(1991-1992)

김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1

The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.

대동맥 협착증과 동반된 출혈성 위장관 동정맥 기형에서 Estrogen-Progesterone 치료 1예

김도연,김화정,김효정,남준식,박수영,박영미,신정은,주미순,황민규,정혜경,손혜영,이선영,이한주 大韓消化器內視鏡學會 1999 Clinical Endoscopy Vol.19 No.부록2

전도도법에 의한 치환 피리딘들의 해리상수 측정과 그의 온도와 압력에 따른 영향

黃正儀,鄭倧在,金學成,尹永炷,朴義煥 慶北大學校 1984 論文集 Vol.38 No.-

Generally, pyridine and most of substituted pyridines act as base in aqueous solutions. The strengths of their basicities can be expressed quantitatively by the dissociation constant of base or its conjugated acid. Generally, the acidity of substituted pyridines can be expressed by K_a of the following reaction. ◁그림 삽입▷ (원문을 참조하세요) The dissociation constants of these subtituted pyridines have not been reported under high pressure but under atmospheric pressure. In this papers, the dissociation constants of some substituted pyridines were measured under high pressure by the conductometry. From the ionic conductivity of hydrogen ion, the dissociation constants (K_a) were calculated. The K_a values were increased with increasing temperature and were decreased with increasing presure. The charateristics of dissociation process of some substituted pyridines were deduced from the thermodynamic properties calculated from the dissociation constants.

곡률을 갖는 복합적층쉘의 에너지 흡수특성 및 충격손상

황재중,이철우,김영남,심재기,양인영 朝鮮大學校 機械技術硏究所 2003 機械技術硏究 Vol.6 No.1

본 연구에서는 CFRP 복합재 적층쉘 형상의 구조부재 설계 시 고려해야 할 고강성, 고강도 측면을 중점으로 2개의 계면수를 갖는 직교이방성 CFRP 복합재 적층쉘에 대하여 횡방향 하중 정적실험 및 ANSYS를 이용한 유한요소해석을 행하여 직교이방성 적층쉘의 역학적 특성을 실험 및 유한해석을 통하여 고찰하고자 한다. 또한, 곡률의 크기에 따른 CFRP 적층쉘의 충격특성을 정량적으로 평가하기 위하여 충격속도의 크기에 따른 에너지 흡수특성 및 충격손상기구를 규명하고자 한다. 정적실험의 경우보다 FEM해석의 경우가 약 25%∼35% 정도 높게 나타났고 충격에너지가 증가할수록 박리현상은 선형적으로 증가하였으며, 같은 충격에너지 범위라 할지라도 곡률 반경이 증가할수록 흡수에너지는 증가하였다. Centering on high rigidity and intensity 'to be considered in the design of sub-materials of the perpendicular anisotropic CFRP composite material laminate shells with two interlaminar number, this study performed width-direction load static experiments and the finite element method using the ANSYS to examine dynamic properties of perpendicular anisotropic laminate shells. Also, to evaluate the impact property of the CFRP laminate shell according to size of curvature quantitatively, it was to identify energy absorption and impact damage instruments according to size of impact speed. Absorption energy of the .FEM analysis was about 25-35% higher than that of the static experiment and the more impact energy increased, the more damage area increased linearly. Despite of the same impact energy range, the more curvature radius increased, the mere absorption energy.

경량화 구조부재의 압궤특성에 대한 실험적 연구

황우채,김정호,서현경,양인영 朝鮮大學校 機械技術硏究所 2007 機械技術硏究 Vol.10 No.1

자동차를 설계하는 가장 중요한 목적은 현제 환경 친화적인 면과 안전수행 측면에 초점이 맞춰져있다. 경량화 자동차 생산의 전반적인 움직임에 있다 환경친화적인 면과 경제적 측면 때문에 자동차생산에서 경량화에 초점이 맞춰져 있다. 본 연구에서는 사각 단면의 압궤 특성을 고려하여 모자형 단면 부재의 에너지흡수와 압궤특성을 분석하였다. 축 정적 압궤테 스트가 각각의 시험편에 대해여 행하여졌다 각각의 부재들의 에너지홉수와 압궤 모드가 분석되었다. 시험편은 알루미늄 사각부재,CFRP 사각부재,Hybrid 사각부재,CFRP 모자형 단면 부재와 Hybrid 모자형 단면 부재가 사용 되었다. 경량화 측면에서 각각의 부재들의 에너지흡수와 압궤특성이 비교 분석 되었다. The most important purpose in designing automobile is currently focus on environment-friendly, safety performance aspect. As for the environment-friendly and economical aspect, the Issues are the overall movements toward lightweight automobile production. In this study ,based on the collapse characteristics of square section member, the collapse characteristics and energy absorption capability of hat-shaped section members were analyzed. The axial static collapse tests were performed for each section members. The collapse modes and the energy absorption capability of the each section member were analyzed. The square sectional members which were composed of the aluminum. CFRP and hybrid were used and hat-shaped sectional members which were composed of the CFRP, hybrid were used by the specimens. In the lightweight design aspect, the collapse characteristics and energy absorption capability of the each member were compared and they were analyzed.