http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
고분자 전해질 막 연료전지의 촉매층 내의 나피온 아이오노머 양에 따른 단위 셀의 전기화학적 특성 연구
안경용,양철남,이수 한국수소및신에너지학회 2010 한국수소 및 신에너지학회논문집 Vol.21 No.6
In order to confirm the effect of Nafion ionomer content in catalyst layer on the performance of PEMFC, we have fabricated several electrodes which were prepared by varying the quantity of Nafion ionomer from 24 wt.% to 39 wt.% in catalyst layer. The effect of Nafion ionomer of each electrode was evaluated with cyclic voltammetry measurement. In addition, cell performance was obtained through single cell test using hydrogen and air. The Pt utilization and performance of single cell were changed by addition of Nafion ionomer to the electrode. Single cell fabricated with 33 wt.% of Nafion ionomer in catalyst layer showed the maximum Pt utilization and performance.
이주민,안경용,신상훈,Lee, Ju-Min,Ahn, Kyung-Yong,Shin, Sang-Hun 대한악안면성형재건외과학회 2012 Maxillofacial Plastic Reconstructive Surgery Vol.34 No.1
Gunshot wounds are unpredictable and require early, precise diagnosis and treatment. A penetrating gunshot wound can be fatal due to compromised airway, hypovolemic shock, lead poisoning and infection. This case report describes a 48-year-old male patient who had a suicidal gunshot wound on the right temporomandibular joint area using an air rifle. We successfully managed the patient by preoperative embolization, surgical removal of the foreign body and primary closure.
골격성 III급 부정교합 환자에서 하악골의 이동량과 교합평면의 변화에 따른 술 후 안정성
이정한,김성희,백영재,안경용,황대석,김용덕,김욱규,Lee, Jung-Han,Kim, Sung-Hee,Baek, Young-Jae,Ahn, Kyung-Yong,Hwang, Dae-Seok,Kim, Yong-Deok,Kim, Uk-Kyu 대한악안면성형재건외과학회 2012 Maxillofacial Plastic Reconstructive Surgery Vol.34 No.6
Purpose: The purpose of this study was to evaluate postsurgical facial hard tissue stability after orthognathic surgery with/without posterior impaction in skeletal class III malocclusion patients, and to evaluate the horizontal relapse tendency, according to changes in anteroposterior discrepancy and occlusal planes. Methods: Ninety patients, who had undergone orthognathic surgery in Pusan National University Dental Hospital, were enrolled in this study. Three main groups were classified as follows: Thirty patients underwent mandibular setback bilateral sagittal split ramus osteotomy (BSSRO) only (BSSRO group, BG); another thirty patients underwent mandibular setback BSSRO and Le Fort I osteotomy with posterior impaction (posterior impaction group, PG); and another thirty patients underwent mandibular setback BSSRO and Le Fort I osteotomy without posterior impaction (non-posterior impaction group, NPG). Preoperative (T0), immediate postoperative (T1) and six-month follow-up period (T2) lateral cephalograms were taken, and various parameters were measured. The analyses were done by linear and angular measurements between T0-T1 and T1-T2, to evaluate postsurgical facial hard tissue stability. Results: Mean horizontal relapse rates were distributed from 11.81% to 19.08%, and there were significant postsurgical changes (0.52 mm~2.44 mm) at the B point in all 3 groups. But, there were no statistical differences on relapse rate among BG, PG and NPG patients. Conclusion: In this study, the postsurgical stabilities of BSSRO and Le Fort I osteotomy with/without posterior impaction in skeletal class III malocclusion patients were acceptable. There were no significant statistical differences in mandibular stability according to changes in anteroposterior discrepancy and occlusal planes.
III급 부정교합에서 선수술 교정치료를 통한 양악 수술 후 안정성
황대석,김용일,이재열,이성탁,김태훈,이주민,안경용,Hwang, Dae-Seok,Kim, Yong-Il,Lee, Jae-Yeol,Lee, Seong-Tak,Kim, Tae-Hoon,Lee, Joo-Min,Ahn, Kyung-Yong 대한악안면성형재건외과학회 2011 Maxillofacial Plastic Reconstructive Surgery Vol.33 No.5
Purpose: The purpose of the present study was to evaluate the postoperative skeletal stability of two-jaw surgery (Le Fort I osteotomy and bilateral sagittal split ramus osteotomy) via surgery first orthodontic treatment (SFOT) in class III malocclusion. Methods: Thirty-two patients who had two-jaw surgery via SFOT were included in this study. Serial lateral cephalograms were obtained before (T0), immediately after (T1), and six months after (T2) surgery. Twelve variables were measured for horizontal and vertical skeletal stability as well as for dental change. All measurements were evaluated statistically by a paired t-test ($P$ <0.05). Results: The mean skeletal changes were $0.1{\pm}2.5$ mm at point A and $-12.0{\pm}7.4$ mm at the pogonion. The mean horizontal relapse was 11.6% at the pogonion, and the mean vertical surgical changes included an upward displacement of $2.1{\pm}7.1$ mm and a forward displacement of $1.4{\pm}4.6$ mm at the pogonion. Upper incisor inclination decreased after surgery and was maintained at T2, and lower incisors were proclined from T1 to T2 by postsurgical orthodontic treatment. Conclusion: Postoperative skeletal stability of two-jaw surgery via surgery first orthodontic treatment in class III malocclusion was clinically acceptable.
면역성혈소판감소증 환자의 하악골에 발생한 다발성 특발성골강
백영재(Young-Jae Baek),금동호(Dong-Ho Geum),이정한(Jung-Han Lee),김성희(Sung-Hee Kim),안경용(Kyung-Yong Ahn),김욱규(Uk-Kyu Kim) 대한치과의사협회 2013 대한치과의사협회지 Vol.51 No.1
The immune thrombocytopenia(ITP) is defined as a platelet count of less than 100,000/ L. It is generally known as characterized by the bleeding manifestations of skin and/or mucosa like ecchymosis due to low platelet count, but reports of the related intraosseous lesions are not common. The idiopathic bone cavity(IBC) is an empty space of the bone, which occurs mainly in the long bones. It is found predominantly in the mandible in case of the maxillofacial area. In general, it appears as an isolated unilocular lesion without the correlation of the teeth. Although the cause of the IBC is supposed to be associated with hemostatic problems, the etiology is unclear and it was not disclosed the relevance of specific systemic disease. In this present case, IBCs that occurred in mandible of patient who has IPT was treated by curettage with platelet transfusion.