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Device Wafer의 종점 전후에 있어서 광역평탄화 특성에 관한 연구
정해도,김호윤 釜山大學校生産技術硏究所 1996 生産技術硏究所論文集 Vol.51 No.-
화학적 기계적 폴리싱(CMP)은 반도체 제조에서 다층구조의 평탄화에 널리 이용되고 있다. 그러나, 패턴의 형상·물질 차이, 여러 가지 가공 변수와 아직 확립되지 않은 실제 가공 모델링 등으로 인하여 완전한 평탄화를 얻기는 쉽지 않다. 본 논문에서는 에치 백 방법 대신 메탈(텅스텐) 폴리싱에 따르는 절연산화막의 평탄화를 실현하였다. CMP 가공동안의 패턴 형상 평가는 AFM을 사용하였다. AFM 평가는 다른 일반적인 평탄도 측정에 비해서 미소 측정에 상당히 효과적이었다. 더불어 평탄화 특성 분석과 CMP 모델링 확립에 크게 기여할 것이다. Chemical mechanical polishing (CMP) has become widely accepted for the planarization of multi-interconnect structures in semiconductor manufacturing. However, perfect planarization is not so easily achieved because it depends on the pattern sensitivity, the large number of controllable process parameters, and the absence of a reliable process model, etc. In this paper, we realized-the planarization of deposited oxide layers followed by metal (W) polishing as a replacement for tungsten etch-back process for via formation. Atomic force microscope (AFM) is used for the evaluation of pattern topography during CMP. As a result, AFM evaluation is very attractive compared to conventional methods for the measurement of planarity. Moreover, it will contribute to analyze planarization characteristics and establish CMP model.
이혜영,서윤정 대전대학교 생활과학연구소 2000 생활과학연구 Vol.6 No.-
The objective of this paper was to identify the relationship between Pop art and fashion illustration in relation to its techniques of fashion illustration, particularly collage. As the result of this study, it was found the followings. Pop art was characterized as popular, mass production, mass media, photograph, youth and modern. Also 60's fashion illustration expressed the image of Pop art. Collage techniques is used one of several fashion illustration expression. It was distinguishable according to object, various materials of collage and how to express is fashion illustration, which is flat object or not. Hamilton, Wahol, Antonio, Bill Donovan, Mat Gustavson, Zoltan showed fashion illustration using by collage techniques of Pop art or development of collage techniques, that is Graffito, Assemblage, photographic Montage
김윤정,김해림,박시내,윤종현,이상헌,박성환,김호연 대한내과학회 2004 대한내과학회지 Vol.66 No.4
순수어농이란 발성언어에 대한 이해와 반복에 장애를 보이지만 읽기, 쓰기, 비발성언어에 대한 이해는 보존되는 경우를 일컫는다. 저자들은 45세 루푸스 환자에서 루푸스 혈관염으로 인해 일차 청각 피질을 포함한 왼쪽 관자이랑에 뇌경색이 발생하여 초래한 순수어농 1예를 경험하였기에 보고하는 바이다. Pure word deafness is characterized by an impairment of auditory comprehension and repetition of speech while a preservation of reading, writing, spontaneous speech and ability to comprehend non-verbal sounds. It is caused by trauma, infection in the temporal lobe of brain. In most cases, the lesions are bilateral, in the middle third of superior temporal gyri, but in a few cases unilateral lesions of dominant temporal lobe are localized. We experienced a case of 45 year-old right handed wonman with systemic lupus erythemato년 (SLE) who presented pure word deafness after left temporal lobe infarction including primary auditory center. Her comprehension was impaired, while reading and visual comprehension were normal. Audiometric tests and auditory evoked potentials disclosed no hearing defect. Brain MRI showed a left temporal lobe infarction without abnormal vascular finding in MRA. She wasdiagnosed as pure word deafness due to SLE vasculitis and managed with high dose steroid and cyclophosphamide therapies.
-G308A Tumor Necrosis Factor-α 유전자 다형성과 주요 우울장애의 연합연구
배치운,오해정,채정호,박원명,전태연,한훈,김광수 大韓神經精神醫學會 2003 신경정신의학 Vol.42 No.2
Objectives : The present study was to examine possible association between the - G308A tumor necrosis factor (TNF)-α gene polymorphism and major depressive disorder (MDD) in Korean. Methods : 108 inpatients with MDD and 125 healthy controls participated in this study. Genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism. Results : Genotype and allele distributions in patients with MDD (p=0.02, P=0.01, respectively), were significantly different from those of the controls. Conclusion : The present study suggests that the -G308A TNF-α gene polymorphism may have a potential role for the susceptibility to MDD in Korean population.
A case of hair foreign body in the sole of a pediatric patient
( Hae Jeong Youn ),( Min Seok Hur ),( Hye In Cheon ),( Song Hee Han ),( Byung Gon Choi ),( Min Jung Kim ),( Nam Kyung Roh ),( Soo Young Kim ),( Yang Won Lee ),( Yong Beom Choe ),( Kyu Joong Ahn ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1
Patients occasionally present with a hair strand penetrating into a body part after they fail to remove the vertically or obliquely imbedded short hair. However, a long hair strand invading into the skin in a curved shape, parallel to the epidermis, is much more uncommon. The stratum corneum (SC), the outermost skin layer, is stacked up with corneocytes, which act as a physical barrier. Palms and soles have thicker stratum granulosum and SC. However, infant skin has thinner epidermis, and the SC with smaller corneocytes up to the second year of life may be susceptible to foreign body invasion. We report a case in which a 2-year-old boy presented to us with an unusually shaped long hair that had penetrated into the epidermis of the sole. This case provided an opportunity to consider the skin structure and skin development in an infant, whose skin is more vulnerable to foreign body intrusion.
A case of vitiligo repigmented with topical calcineurin inhibitor
( Hae Jeong Youn ),( Byung Gon Choi ),( Song Hee Han ),( Min Jung Kim ),( Soo Young Kim ),( Nam Kyung Roh ),( Ho Jung Jung ),( Yu Ri Kim ),( Yang Won Lee ),( Yong Beom Choe ),( Kyu Joong Ahn ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Vitiligo is an acquired pigmentary disorder, clinically characterized by depigmented macules caused by destruction of melanocytes in the affected skin. Phototherapy and application of topical corticosteroids are most commonly prescribed. Topical corticosteroids have been shown to be effective as monotherapy in vitiligo, especially in head and neck lesions, with response rates of 64% in children. However, the head and neck are areas with skin that is among the thinnest of the body, and alternate therapies that do not cause atrophy would be welcome. Topical tacrolimus appears to fill this need. We report a case of vitiligo showing remarkable repigmentation with only topical tacrolimus ointment. Keyword: Vitiligo, Repigmented, Calcineurin inhibitor
A case of lupus erythematosus panniculitis
( Hae Jeong Youn ),( Byung Gon Choi ),( Song Hee Han ),( Min Jung Kim ),( Soo Young Kim ),( Nam Kyung Roh ),( Ho Jung Jung ),( Yu Ri Kim ),( Yang Won Lee ),( Yong Beom Choe ),( Kyu Joong Ahn ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Lupus erythematosus panniculitis(LEP) is a rare variant of lupus erythematosus, which primarily affects the subcutaneous adipose tissue. LEP may appear as the sole manifestation of lupus erythematosus or may occur prior to or after the onset of discoid lupus erythematosus or systemic lupus erythematosus(SLE). The incidence of SLE in patients with LEP has been reported to range from 10% to 41%. The incidence of LEP occurs in only 1-5% of patients with SLE. Why LEP develops is still lacking. We report a case of LEP in 25 year old women who presented depressed lipoatrophic areas withoutinflammatory skin changes on the both upper arm for a year ago. Histopathology showed lobular panniculitis without vasculitis. The patient was weak positive for antinuclear antibodies, borderline positive for anti-double stranded DNA and low C4 level. Herein we report a rare case of LEP with a systemic lupus erythematosus.