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이상협;배형철;송석태;한찬수;채희백 순천향대학교 기초과학연구소 2010 순천향자연과학연구 논문집 Vol.16 No.2
In order to know how the [2-(2'-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV) layer works in organic light emitting diode, two different types of devices were fabricated, which are MEH-PPV single layer devices and MEH-PPV/tris (8-hydroxy-quinoline)aluminium(Alq3) bilayer devices. On the indium-tin-oxide(ITO) glass anode MEH-PPV layer was first spin-coated, and the Alq3 layer and the aluminium(Al) anode were vapor-deposited sequentially. The devices shows a trend that has lower current, luminous efficiency in case the thickness of the device is larger. Some bilayer devices, however, show more improved performance than other devices of smaller total thickness. This results were discussed on the basis of improved exciton formation resulting from balanced carrier transport.
유태현,한광협,박성하,김형길,문영명,한재호,조상호 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.2
Recent advances in both the diagnosis and treatment of hepatocellular carcinoma have improved the prognosis and changed the clinical significance of the recently increasing distant metastases. Distant metastases found after successful treament of the primary lesions are of great clinical significance for the treatment of hepatocellular carcinoma. The duodenum is a rare site of hematogenous metastases or direct invasion from hepatocellular carcinoma. A 23 year old man was admitted with upper gastrointestinal bleeding. He had been diagnosed with hepatocellular carcinoma and treated by a left lobectomy and chemoembolization. The patient was admittted for 12 months after the treatment of the primary tumor. Endoscopic examination revealed a mass in the duodenal bulb that protruded into the lumen. He died due to massive hematemesis. We report on a rare case of hepatocellular carcinoma with duodenal invasion in a 23-year-old male patient.
( Sung Hyub Han ),( Ji Won Byun ),( Won Soo Lee ),( Hoon Kang ),( Yong Chul Kye ),( Ki Ho Kim ),( Do Won Kim ),( Moon Bum Kim ),( Seong Jin Kim ),( Hyung Ok Kim ),( Woo Young Sim ),( Tae Young Yoon ) 대한피부과학회 2012 Annals of Dermatology Vol.24 No.3
Background: Androgenetic alopecia (AGA) is a common hair loss disease with genetic predisposition among men and women, and it may commence at any age after puberty. It may significantly affect a variety of psychological and social aspects of one`s life and the individual`s overall quality of life (QoL). Objective: This study aimed to investigate the QoL of AGA patients and discover the factors that can influence the QoL of AGA patients, including previous experience in non-medical hair care, reasons for hospital visits, age, duration, and the severity of AGA. Methods: A total of 998 male patients with AGA were interviewed, using the Hair Specific Skindex-29 to evaluate the QoL of AGA patients. Results: The results of the Hair Specific Skindex-29 on patients with AGA were as follows: symptom scale: 26.3±19.5, function scale: 24.0±20.1, emotion scale: 32.1±21.8, and global score: 27.3±19.1. According to this assessment, QoL was more damaged if the patient had severe alopecia, a longer duration of AGA, younger age, had received previous non-medical hair care, and visited the hospital for AGA treatment. Conclusion: This study showed that AGA could harmfully affect the patients` QoL. These findings indicate that dermatologists should address these QoL issues when treating patients with alopecia.
Rhabdomyomatous Mesenchymal Hamartoma of the Vagina
HAN, SUNG HYUB,SONG, HEE JIN,HONG, WON KYU,LEE, HYEON SOOK,CHOI, GWANG SEONG,SHIN, JEONG HYUN Blackwell Publishing Ltd 2009 Pediatric dermatology Vol.26 No.6
<P>Abstract: </P><P>Rhabomyomatous mesenchymal hamartoma (RMH) is a rare hamartomatous lesion in the dermis and subcutaneous tissue. We report a case of solitary RMH occurring on the vagina of a newborn infant.</P>
한성협 ( Sung Hyub Han ),송희진 ( Hee Jin Song ),홍원규 ( Won Kyu Hong ),이현숙 ( Hyun Sook Lee ),신정현 ( Jeong Hyun Shin ),최광성 ( Kwang Seong Choi ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.8
Metastatic cancer of the umbilicus is very rare and is called Sister Mary Joseph`s nodule. Metastasis to the umbilicus usually presents as diffuse spreading of primary cancer or recurrence after treatment of primary cancer, carries very poor prognosis, and is generally inoperable. However, umbilical metastasis presents rarely as a first sign of primary cancer and can lead to its diagnosis. The diagnosis is usually made with the histologic examination and the most common primary cancer is an adenocarcinoma of the stomach. We report a case of umbilical metastasis as a first sign of gastric cancer which leads to its diagnosis. This report emphasizes the need for careful evaluation of any umbilical lesion. (Korean J Dermatol 2008;46(8):1103~1107)
성인발병 Still병의 피부 소견에 대한 임상 및 조직학적 고찰
한성협 ( Sung Hyub Han ),최광성 ( Gwang Seong Choi ),신정현 ( Jeonghyun Shin ) 대한피부과학회 2010 大韓皮膚科學會誌 Vol.48 No.4
Background: Adult-onset Still`s disease (AOSD), one of the causes of fever of unknown origin, is accompanied by skin rash. This is the reason why the clinical significance of skin lesions has been of interest. However, its skin manifestations and the histopathological findings are not clearly documented. Objective: This study aimed to identify characteristic clinical and histopathological features of skin manifestation of AOSD. Methods: We evaluated the medical records and histopathologic slides of five patients who had been diagnosed with AOSD in the rheumatology department and referred to our department between 1996 and 2009. Results: An asymptomatic evanescent salmon colored macular rash was seen in three patients (60%). A persistent brown plaque was seen in two patients (40%). Histopathologically, superficial perivascular infiltrates of neutrophils and lymphocytes were observed in all patients (100%) and necrotic keratinocytes were observed in the upper epidermis in three patients (60%). Conclusion: In addition to typical Still`s rash, atypical cutaneous findings such as persistent plaque lesions were found in AOSD patients. The results of this study may help clinicians to diagnose this rare disease more easily. (Korean J Dermatol 2010;48(4):283~289)