• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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• pp.119.1-119.1
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• 2011

Since Gratzel et al. reported the first efficient dye-sensitized solar cells(DSSCs) in 1991, they have attracted much attention due to their relatively high power conversion efficiency and potentially low cost production. To date, high performance and good stability of DSSC based on Ru-dyes as a photosensitizer had been widely addressed in the literatures. However, the Ru-dyes are facing the problem of manufacturing costs and environmental issues. In order to obtain even cheaper photosensitizers for DSSC, the metal-free organic photosensitizers are strongly desired. The metal-free organic dyes offer superior molar extinction coefficients, low cost, and diverse molecular structures as compared to the conventional Ru-dyes, In this work, we have studied on the synthesis and characterization of the organo dendritic dyes containing different number of electron acceptor moieties in a molecule.

• 대한한방내과학회지
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• 제13권2호
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• pp.27-34
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• 1992

This study has been carried out to investigate the cause, symptom and treatment of Gi-Chun (氣喘) by referring to 32 literatures. The results were obtained as follows; 1. The factor causing Gi-Chun (氣喘) is almost damage of feeling (七情損傷). 2. The symptom of Gi-Chun (氣喘) is as follows. agony, breathing urgent, cold hand and feet, body tired, low appetite 3. The treatment of Gi-Chun (氣喘) is as follows. Sunpaeganggi(宣肺降氣), Jihaepyungchun(止咳平喘), gudam(去痰) 4. The drugs(herb) of Gi-Chun (氣喘) is as follows. Samatang(四磨湯), Sachiltang(四七湯), Sojaganggitang(蘇子降氣湯), Gilgyungjigaktang(桔梗枳殼湯), Gamisachiltang(加味四七湯), Gamisoyosan(加味逍遙散).

• 기술혁신연구
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• 제15권1호
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• pp.65-86
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• 2007

The purpose of the current study is to suggest a reliable starting point for roadmapping to overcome two common shortcomings of previous literatures that they do not demonstrate a robust methodology for roadmap and they describe the roadmapping process in the abstract. The proposed methodology for roadmapping considers four important business- and market-related factors: consumer requirements, engineering characteristics, the gap between the roadmapped technology and competing technologies, and future changes in consumer preferences. We capture consumer preferences using conjoint analysis and interconnect the above four factors using QFD (Quality Function Deployment). The model is applied to power line communications (PLC). The results show that there is a significant difference between priorities assigned to the engineering characteristics by expert alone and priorities determined by the roadmapping model.

• Archives of Plastic Surgery
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• 제33권6호
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• pp.789-791
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• 2006

Purpose: The inverted nipple presents many problems in both cosmetic and functional aspects. The histopathologic features of inverted nipple are that inverted nipple has less fibromuscular tissue than normal nipple, short lactiferous duct and dense fibrous tissue. Many papers have been reported for correction of the inverted nipple, however not many medical literatures has specifically described about traction method. Although traditional traction methods were using half of urine cup or lid of bottle, they were uncomfortable and incapable for wearing brassiere. Methods: We invented a simple and more natural method using a dome-shape plastic disposable lid of take-out cup. We applied new device for three patients after corrective surgery. Results: For long term follow up, all patients satisfied their postoperative status and they were comportable with the lids. Conclusion: This new method is very simple, comfortable, and effective method for traction. It also allows patients to wear the brassiere.

• Journal of Chest Surgery
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• 제34권5호
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• pp.422-425
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• 2001

We performed thoracoscopic resection for diagnosis in 41 year-old-female presenting with multiple pulmonary nodules in both lung fields, which was detected incidentally on routine chest x-ray and followed by additional exmaminations including chest CT scan and percutaneous needle aspiration biopsy under the presumptive diagnosis of metastatic cancer. During thoracoscopy, the result of the frozen section analysis of multiple masses revealed strong evidence of leiomyoma. In her past medical history, she had undergone myomectomy, and hysterectomy, 7 year ago and 10 year ago, respectively. Based on permanent, special staining of specimen, estrogen receptor assay and review of past specimen of uterine myoma the final diagnosis was benign metastasizing leiomyomata from uterine myoma, the report was very uncommon in Korean and English literatures. The patient has been followed up for 2 year without special therapy, such as hormonal therapy.

• Journal of Chest Surgery
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• 제15권1호
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• pp.107-111
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• 1982

Primary cardiac tumor is rare and the most Intracardiac tumor is atrial myxoma which occurs about 75% in left atrium, Biatrial myxomas are very rare Intracardiac tumor which have reported first by Ripstein in 1953 and successful surgical removal by Beeler and Kaufmann in 1961. We have experienced a case of biatrial myxomas intraoperatively which had diagnosed as left atrlal myxoma preoperatively and removed those under moderate hypothermia and cardiopulmonary bypass at the first In Korea, The patient was discharged with .good results, So we want to report this case with the review of the literatures.

• Journal of Chest Surgery
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• 제15권3호
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• pp.366-369
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• 1982

Single coronary artery is rare congenital anomaly with incidence about 0.04%. Above half of single coronary artery is symptomless, and about 41% of cases are associated with another congenital cardiac anomalies . Single coronary artery is sometimes important for cardiac operation to avoid fatal result from cutting of coronary artery during the right ventriculotomy. Among the associated anomaly of the single coronary artery, coronary arteriovenous fistula is very rare. We experienced congenital single coronary artery with coronary arteriovenous fistula drained into the right ventricle, and so we report this case with literatures.

• Journal of Chest Surgery
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• 제13권2호
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• pp.154-157
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• 1980

A twenty three year old, Primigravida and 32 week pregnant woman who has been complained dyspnea, chest pain, nausea and vomiting was admitted to this chest surgical department on Feb. 19, 1979. Physical findings were those of acutely ill appearance, decreased thoracic excursion and absence of breath sounds in the left hemithorax. Roentgen examination of the chest revealed reticular cystic densities in the left, particularly in lower lung field with collapse of the left lung. Correction of the diaphragmatic hernia was carried out with reduction and repair of the hernia through transperitoneal approach. On exploration, the defect of the diaphragm was 12 x 12 cm in size and was located posterolateral area of left diaphragm. Hernia contents were stomach, spleen, omentum and splenic flexure of large bowel. The baby was normal full term spontaneous delivered at 36th POD. Diaphragmatic hernia complicated by pregnancy is a rarity and mortality is extremely high. Therefore, the literatures have reviewed and the case is reported.

• Journal of Chest Surgery
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• 제12권4호
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• pp.429-433
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• 1979

Morgagni hernia is a rare condition of the congenital diaphragmatic hernia which Is located at the anteromedial portion of the diaphragm, and is located immediately posterior to the sternum. Its cause is considered by embryologic defect and the abdominal organs are passed through a defect. The incidence is predirected women over 50 years old. Its synonym is hernia of subcostosternal, retrosternal, parasternal, rectocostoxiphoid, anterior diaphragmatic or Larrey`s. This report presents a symptomatic Morgagni hernia of ten months old male child on whom the diagnosis was established and was operated at the Busan Gospel Hospital. This patient was admitted with the chief complaints of mild cyanosis, frequent upper respiratory infections and protrusion of the right lower anterior chest. Herniorrhaphy was performed through the upper abdominal midline incision, hernial contents of the omentum and the colon, and sac as noticed from the Larrey`s space measuring 4 x 2 cm. in diameter and oval in shape. Interrupted sutures without difficulty repaired the defect. The cyanosis was disappeared and the patient had uneventful course of post-operative period. The patient was discharged at 7th. postoperative day. This case presentation with a brief review of literatures is given.

• Journal of Chest Surgery
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• 제17권4호
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• pp.614-619
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• 1984

Atrioventricular canal is divided into incomplete, intermediate and complete types. In ostium primum ASD [incomplete type] mitral valve cleft is almost always present, but ostium primum ASD with tricuspid valve cleft is a rare congenital anomaly. The patient was a 7 year old female whose complains were palpitation, exertional dyspnea and growth retardation. The chest films showed moderate cardiomegaly [C-T ratio, 61%]. EKG, Echocardiography, cardiac catheterization and left ventriculography were performed. Open heart surgery was done under the impression of incomplete atrioventricular canal. At the time of operation, ostium primum ASD [2x2.5 cm in diameter], secundum type ASD [lxl.5 cm in diameter] and cleft in the septal leaflet of the tricuspid valve were noted. But mitral valve was normal without cleft and VSD was not noted. Each anomalous portion was repaired. The patient made an uneventful recovery and we report this case, review and discuss the literatures.