P3HT, BDT-3T Polymer 고분자 유기박막태양전지에서의 안정도 및 효율감소에 대한 고찰

선욱 ( Wook Sun ),이경균 ( Kyeong K. Lee ),이성구 ( Sung Koo Lee ),이효수 ( Hyo Soo Lee ),임은희 ( Eun Hee Lim ) 한국공업화학회 2010 응용화학 Vol.14 No.2

In this writing, in order to understand stability/degradation in organic solar cell devices, the device stability of poly(3-hexylthiophene) P3HT and poly(benzo[1,2-b:4,5-b` ]dithiophene- alt-terthiophene (BDT-3T) is discussed. The OPVs were fabricated using the polymers and [6,6]-phenyl-C61-butyricacidmethylester (PC[60]BM) as donor and acceptor, respectively. The effect of O(2) on device stability was examined by keeping the P3HT and BDT-3Tdevices in N(2) and airand the humidity was controlled by introducing getter on encapsulation of device. The experiment was done until thousands of hours. The device stabilityof new copolymer BDT-3T was comparable to that of P3HT.

세 가지 물질 블랜딩을 통한 유기태양전지 효율 증대에 관한 연구

김한솔 ( Han Sol Kim ),선욱 ( Wook Sun ),이경균 ( Kyeong K. Lee ),이성구 ( Sung Koo Lee ),임은희 ( Eun Hee Lim ) 한국공업화학회 2010 응용화학 Vol.14 No.2

In this work, new conjugated small molecule and polymer based on benzo [1,2-b: 4,5-b`] dithiophene (BDT) and thiophene were successfully synthesized via Suzuki and Stillcoupling reactions, respectively. Using these new materials, we introduced the ternary blended system into the donor and acceptor blended films. The device performances of organic photovoltaic cells can be improved by addition of the third component. The effect of third component on the photovoltaic properties was systematically investigated by UV-vis absorption and photoluminescence (PL) spectra.

서혜부 동맥화된 정맥 피판술의 치험례

김동일,선욱,오갑성,김순걸,백세민,오재욱 大韓成形外科學會 1995 Archives of Plastic Surgery Vol.22 No.6

The development of microsurgical free-tissue transfer in the early 1970 ushered in a new era in reconstructive surgery. Many new flaps have since been described. However, available free flaps with defined arterial inflow and venous outflow are limited and may not suit the particular needs of a defect. Thus efforts have been made to expand the reconstructive surgeon's armamentarium by devising flaps perfused by unconventional means. In the decade, then, there have been experimental and clinical attempts in using the venous flap. The arterialized venous flap represents another variation in conventional flap perfusion. A vein in the flap receives blood inflow by means of anastomosis to an artery in the flap recipient site. Flap drainage is provided by a secondary flap vein that is connected to a recipient site vein. The survival of an arterialized venous flap was first demonstrated by Nakayama et al. in 1981 in an abdominal skin flap of the rat. We reconstructed the soft tissue defect of the dorsum of the right foot with the groin arterialized venous flap because of the accidental injury to arterial pedicle during dissecting the flap. The defect was 5×7 cm in size. The dorsalis pedis artery was anastomosed to the vena comitants of superficial circumflex iliac artery. The superficial vein of the flap was anastomosed to the saphenous vein. The flap became gradually dark red with swelling. Hyperbaric oxygen therapy and salvage procedure was performed. The circulation of the flap become stabilized 2 weeks postoperatively. The flap survived satisfactorilt. So, we suggest that arterialization of the venous system is a viable means of reestablishing nutrient flow to the groin free flap.

남성 가성 반음양 환자의 기능적 성전환술의 경험

황소민,박재석,선욱,김동일 인제대학교 1995 仁濟醫學 Vol.16 No.4

male-to-female 성전환술에 대한 사회적 인식 및 많은 연구로 수술방법도 다양하게 발전해 왔다. 이에 본 교실에서 경험한 남성 가성 반음양 환자에 있어, 보다 안전하고 기능적인 방법을 이용한 수술을 토대로 성전환술에 대해 보고하는 바이다. Intersex is the state of haying ambiguous or inappropriate genitalia due to aberration of the normal mechanism for sexual development. Sex change operation is being a more commonly receptive concept with social reception, studies and experiences about these operations. We experienced one case of male pseudohermaphroditism due to androgen insensitivity. The patient underwent the one-swage male-to-female surgery by orchiectomy, penectomy, vaginoplasty using the penile & scrotal flap, preserving part of the glans penis as a clitoris. This operative method made more safe & functional results.

외상성 관골변형의 교정에 관한 연구

백세민,윤성호,선욱,오재욱,김동일 大韓成形外科學會 1995 Archives of Plastic Surgery Vol.22 No.5

Recently, facial traumas are increasing due to the increment of traffic and centralization of population into the cities. Management of the facial traumas including facial bone fractures are apt to be delayed because of the preferential treatment for the life-threatening injuries, so the patients with posttraumatic facial deformities are increasing. It was difficult to get a satisfactory results for the correction of posttraumatic malar deformity by means of previous approach and fixation methods, therefore, we chose a new method based on our experiences which consisted of bicoronal approach, osteotomies on the three sites (zygomaticofrontal suture, zygomatic arch and zygoma body) and fixation with miniplate after repositioning the malar complex. The advantages of our method are summarized as follows , 1) Operation proceeds without difficulties because of the wide exposure of operation field. 2) Easy mobilization of the malar complex by the new osteotomies on the three fracture sites. 3) The stability is reinforced by the partial detachment of masseter muscle from the zygoma and the fixation with the miniplates & screws. 4) Enophthalmos can be corrected by repositioning the orbitozygomaticomaxillary complex. 5) Bone graft (esp. calvarial bone) can be done easily in the same operation field. So we reported the details of our method and the cases with the review of related journals.

유리피판을 이용한 하지재건술

오재욱,김동일,백세민,선욱,백롱민,정성훈,이진하 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.5

The lower extremity is an important part of the body responsible for weight bearing. Extensive soft tissue injuries of lower extremity had been reconstructed by skin graft, local flap, and distant flap, but, recently, free flap transfer technique is provided in lower extremity reconstruction according to development of microvascular surgery. We have done 46 free flap transfers using micorvascular anastomosis in extensive soft tissue injuries below knee joint, from Jan. 1989 to Jan. 1993. We have done 8 kinds of free flap transfers. The most common extensive soft tissue injury is heel area, 12 cases, anterior tibial, and foot dorsum, in turn. Most frequent free flap transfer was latissimus dorsi free flap transfer, 17 cases, gracilis, superficial temporalis, and scapular free flap were used in turn, The overall success rate was 95%. According to our 46 free flap transfer experiences of lower extremity reconstruction, especially below knee joint, we obtained the adequate types of free flap transfer for extensive softtissue injury. #1. When we recontructed lower extremity soft tissue below knee joint, if the extent of injury was wide, latissimus doris flap was suitable free flap which can be generally used. #2. Latissimus dorsi flap or gracilis flap was suitable free flap for anterior tibia&ankle joint. #3. To consider the thickness of flap, tensor fascia flap was suitable free flap for using for foot dorsum. #4. To consider the thichkness&the staying-power, if the extent of injury is wide, latissimus dorsi flap which was covered by partial thickness skin graft was suitable, but if the extent of injury was small, temporalis fascia flap was suitable for using for foot plantar surface&heel. Adequate free flap transfer provides reliable method for dealing with difficult reconstructive problem in extensive soft tissue injury of lower extremity.

하악과두골절 치료후의 예후에 관한 임상적연구

서일경,백세민,오재욱,김동일,김진환,선욱,박성규 大韓成形外科學會 1994 Archives of Plastic Surgery Vol.21 No.3

Seventeen of twenty-five patients who were treated for mandible condyle fractures at Inje university from March 1988 to May 1992, were available for follow up from postoperation one to five years were evaluated statistically the analysis are as follows: 1) The incidence of the mandibular condyle fracture was more frequent in males than that of females(five point two five : one). 2) The incidence of the disease based on age was the following orders; ten in the third decade(forty percent), nine in the fifth decade(thirty-six percent), three in the first decade(tweleve percent), two in the second decade(eight percent), and one in the sixth decade(four percent). 3) The incidence of the disease based on causation was as follows; nine by traffic accidents(thirty-six percent), six by an accidental fall down(twenty-four point five percent), six by fist blow(twenty-four percent), three by sliping on the ground(twelve percent)and by collision with trees(four percent). 4) Fifteen cases had unilateral fracture site and two cases were bilateral. The location of fracture line were seven cases on right side, twelve cases on left side, and fourteen cases on condyle portion, five cases on subcondyle potion. 5) Management was achieved by closed reduction in sixteen cases and one cases was treated by open reduction. 6) The cases were divided into four groups according to Yamaguchi's classification ; ten in degree 0(fifty-eight point eight percent), four in degree Ⅰ(twenty-three point five percent), two in degree Ⅱ(eleven point seven percent) and one in degree Ⅲ. A statistically significant difference in degree of TMJ dasfunction were demonstrated according to age (x²=fifteen point two two three, p=nought point one one) No significant difference in TMJ dysfunction were demonstrated between the first decade and the other decade.(x²=nought point one one seven, p=nought point seven three two) 7) After treatment for condyle fracture five patients(thirty-five point seven percent) showed disability out of fourteen patients; three in degree Ⅰ, one in degree Ⅱ and one in degree Ⅲ. After treatment for subcondyle fracture two patients(fourty percent) showed disability out of five patients; one in degree Ⅰ and one in degree Ⅱ. No statiscally significant difference in degree of TMJ dysfunction were demonstrated between condyle fracture and subcondyle fracture.(x²=nought point nine five, p=one)