수평 매복 상악 견치의 교정적 견인 치험례

박해지(Hai-Ji Park),박정진(Jung-Jin Park),강윤구(Yoon-Goo Kang) 대한치과교정학회 2022 대한치과교정학회 임상저널 Vol.12 No.1

Maxillary canine is one of the most frequently impacted teeth after third molar. This case report presents two patients with horizontal impacted maxillary canines treated by orthodontic traction. A 10-year old boy presented with a chief complaint of the impacted maxillary left canine and a 9-year old boy was referred with bilateral impacted maxillary canines. Impacted canines of both patients showed labially directed horizontal angulation. Impacted canines were treated and aligned by twice sequential surgical exposures. After treatment, both cases showed favorable aligning and root parallelism of the impacted canine.

분할 원호판 강관 두부 결합부의 구조 성능에 관한 실험적 연구

노삼영(Noh Sam-Young),박해인(Park Hai In),박문상(Park Moon Sang) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.9 No.2

The connection system of steel pile and RC footing is an important structure because the total load of upper construction should be transferred through the joint construction of different two materials-steel and RC-with strongly changed section area. Although many connection systems have been developed. their structural and economical efficiency and workability are often insufficient. Therefore, a new connecting system was developed to improve the above mentioned problems of current systems. The divided arc plate could improve the workability and economical efficiency, structural efficiency could be reached by welding. The main purpose of the research is to evaluate the structural behavior of the new designed connection system through experiments.

분할 원호판 강관 두부 결합부의 구조 성능에 관한 실험적 연구

노삼영 ( Noh Sam-young ),박해인 ( Park Hai In ),박문상 ( Park Moon Sang ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.2

The connection system of steel pile and RC footing is an important structure because the total load of upper construction should be transferred through the joint construction of different two materials-steel and RC-with strongly changed section area. Although many connection systems have been developed, their structural and economical efficiency and workability are often insufficient. Therefore, a new connecting system was developed to improve the above mentioned problems of current systems. The divided arc plate could improve the workability and economical efficiency, structural efficiency could be reached by welding. The main purpose of the research is to evaluate the structural behavior of the new designed connection system through experiments.

鼻淚管開放術의 手技

朴海壽 최신의학사 1968 最新醫學 Vol.11 No.5

PAN Unit의 단일중합체와 공중합체에서의 배향에 관한 연구

박해랑,류주환 충남대학교 산업기술연구소 2003 산업기술연구논문집 Vol.18 No.1

Polyacrylonitrile(PAN) is a well-known crystalline polymer. Even when PAN is in its atactic configuration, as is usual, the crystallinity still strongly persists. This is due to the strong interaction between the nitrile groups. Hence much interest has been focused on the elucidation of the conformation of PAN. However, a full agreement on the crystalline morphology and the conformational state of individual polymer chains is yet to be achieved. In this study, we used as samples a PAN homopolymer and an AN-methyl acrylate(MA) copolymer. In the latter, MA is considered as a way of introducing a slight structural perturbation to the AN sequence in the homopolymer. Then the infrared dichroism technique was used to follow the behavior of orientation as a function of the extension. In carrying out these experiments, detailed considerations on the conformational structure of the PAN chains were given on the molecular basis. As a result, we found that the orientation behavior of the unperturbed AN sequences was more sensitive to the extension and its linearity of the chains was higher than the perturbed counterpart, in good agreement with the conjecture on the molecular level.

3차 의료기관 응급센터로 내원한 아나필락시스 환자

박종석,박해심,이수영,정윤석,조준필 대한응급의학회 2001 대한응급의학회지 Vol.12 No.1

Background: Anaphylaxis is a systematic allergic reaction, which may be fatal. However, despite its seriousness, its low level of incidence has prevented in depth studies. Thus, we analyzed the causes of anaphylactic shock in patients admitted in a tertiary hospital, observed its clinical symptoms, and formed a basis for adequate emergency treatment, as well preventive methods. Methods: The patients who visited Ajou university hospitals from June 1994 to May 2000(7 years) and who met the 1974 JAMA definition were selected for this retrospective study. The analysis of causative agents was made on the basis of clinical symptoms and the patients' chief complaints at the time of admission. Patients diagnosed with anaphylactic shock included those showing at least two types of IgE-mediated symptoms; and those with a simple rash or breathing difficulties were excluded from the study. Results: Of 36 patients, 22 were male and 14 female, Those below the age of 20 comprised 16.7% of the patients(6 patients), between 20 and 29 comprised 16.7%(6 patients), 30 and 39 comprised 25%(9 patients), 40 and 49 comprised 27.8%(10 patients), over 50 comprised 14%(5 patients). The overall percentage show 70% of the patients in active adult age group. Rash was the most common clinical symptoms(89%, 32 patients) and hypotension the second(75%, 27 patients), followed by respiratory distress, fainting, and arrhythmia. Causative agents were insect bites, including bee stings(15 patients), medication(12 patients), food(8 patients), and unknown(1 patients). Nine(9) of the 36 case, were diagnosed as having an atopic origin. Conclusion: Bee sting was the single most common cause in the insect criteria while penicillin & NSAIDs accounted for most of medication-induced cases. Food showed a varied distribution. An atopic origin was not a basis for anaphylactic shock, but did show a two-fold increase of prevalence. This study is the first of its kind in addressing anaphylactic shock, a potentially severe illness, over a period of 7 years.

다기능 의료용 마취기의 안전성 평가

이해광,조양하,유규하,박해대,이창형,정호년,노혜원,정광훈,백동헌,장우익,김정구,이해빈 식품의약품안전청 2000 식품의약품안전청 연보 Vol.4 No.-

과학문명의 발전과 더불어 의료기기의 발전 추세는 한 가지 주요 기능 외에 부가적 기능을 겸비하는 다목적인 형태로 발전하고 있다. 이러한 다기능의료기기의 경우 부가기능이 주요 기능의 안전성에 위해를 가할 수 있으며, 또한 동작원리가 서로 다른 의료기기가 준합되어 사용되는 경우에는 전기적인 결합에 의한 간섭 등에 의하여 전기적인 위해의 요소가 증가할 수 있다. 파라서 본 연구에서는 대표적인 다기능 의료기기인 의료용 마취기를 중심으로, 제조사별 제품의 특성과 국제규격과의 조화를 고려하여 안전성 평가를 위한 기술규격을 개발하고자 한다. 또한 개발 확림된 의료용 마취71의 개별기준규격을 고시화하여, 페품의 안전성확보에 관한 기준규격으로의 유웅한 정보제공과 아울러 국제규격과 조화를 이룬 국내 제품의 개발 가능성을 극대화할 것으로 기대된다. The medical devi Purpose Ivhich includes additionalfunctions maf exert a harmful ices in these modern days have a current trend of multi-funci4ions other than major function. However,these additionalnfluence upon a major function such as potential risk of anaccordance with international standards, one of major multi-pumose rrom In)'estlgation ofvarious sl;andards on anaesthetic apparatus toThis standard directilye will be useful information to evaluatdomestic apparatus inharmony with international standards.

조직공학 의료기기의 성능·안전성 평가기술 개발

이해광,유규하,조양하,노혜원,박해대,이창형,정호년,양원선,김정구 식품의약품안전청 2001 식품의약품안전청 연보 Vol.5 No.-

조직긍학은 의학 연구 분야에서 활발한 성장을 보이핀 있늘 분야로 떠오르고 있다. 이러한 조직공f·? 제푿들 대다수는 자연적이거나 생체재료와 조합된 니포구성 성력의 이용에 의존하고 있다. 하지만 쵤근 들어 인공피부, 인긍연골 등 조직긍학 계품이 급슥히 상품화되어 출시될 단계에 있으나 이fl 퍼한 안전성과 유효성 평가피준은 아직 정린되지 못하초 있는 상채이다. 이에 본 연구에서는 믿을만한 의학적 산둘로서 자리 매깅 할 인공연골을-비릇한 조픽공학 재품을 사람에 적용함에 있어 이에 대:한 안전 성쏙 성능 평가를 위한 일반적인 접근을 시도곯였다. 쪼직공학 재품의 쵱가기법과 관련된 제품의 개발 과정베서 반드시 고려리어야 할 분야에 대하여 기쑨하있다. 이에 대한 사항은 다음과 같아 요약될 수 있다 : 1) 세포 및 조직의 유래 ?) 세포 딪 조직의 특서 3; 싱페재료 f,1험 4) 품질보증 5) 픔질관리 6) 비인상 딪 7) 꼴상 펼가가 이엑 해당된다. 로글 코픽공착 제픔 가운데 세포의 유래에 차하여 콩속꼭친 분야왁 독린적인 분야호 영역을 분리하였다. 첫 1,4Fil 길우는 T·11룸의 작용기작이 진체의 극뚜건 부위엑서 구즈쓱 기논의 수복이나 재건을 목적으로 사욧쓴:=7 겄이. 투 껀째 경우는 711품의 작응기각이 진신적으로꺼 껑리학적이나 약리학적으로 활성들 나니내글- 게붐이다. 일반적으초 조직공학 제품의 안진겊곽 성늘 편가를 워한 기법의 개발은 장대적으로 오랜 기간 동안 찬자에게 이식되는 제품에 초점이 딱추어꼭 것이며, 본쳔케서는 제 1단계 사업으로꺼 현Rf 상품화 단끼에 있는 인공연골을 중심으로 안전성쓱 껑능에 패글 기적적인 가이드라인을 )If시하핀자 곡다. 이는 관련 재품의 개발에 도음이 될 것이라 믿는다. Tissue Engineering is a very promising field in biomedical research and development. Guidance of tissue engineered medical devices(TEMDs) is very important for the patients' safety and national welfare. Most of TEMDs consist of natural and/or biomedical polymers and polymer- cell/tissue component mixture. Some TEMDs like artificial skin and cartilage are in the stage of commercialization, however, the evaluation standards and testing methods are not prepared yet. In this study, we have developed a guidance for the function, biocompatibility and safety tests of tissue-engineered cartilage. The guidance contains the essential checking ponits in the development process of TEMDs, which are as follow ; 1) cell or tissue origin 2) cell or tissue characteristics 3) biomaterial test 4) quality assurance 5) quality control 6) non-clinical evaluation 7) clinical evaluation. TEMDs were divided into two categories according to the cell origin. The first category contains the devices used for repair and reconstruction of structural function of impaired tissues. The other category contains the systemic devices with physiological and pharmacological activity. Generally, the guideline for function and safety of TEMDs would be focused on the long-term implants. We believe that adoption of thes guidance of tissue-engineered cartilage sould lead to the products consistent in quality and performance as well as safety.