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김중원,장정식 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
Recently, various studies related with carbon-based perovskite solar cells (PSCs) have been introduced due to their stability on the ambient condition. However, there are still problems to be solved for long-term stable device with the high efficiency. One is the poor contact between carbon/perovskite layer and the other is permeation of moisture in the humid air through vacancy in the formed carbon layer. To solve these problems, we introduce a revolutionary approach method for improvement of interfacial contact and moisture resistance via fluorine vacuum plasma. The fluorine doped carbon-based PSCs exhibited excellent photovoltaic performances, showing 25 % improvement in efficiency when compared to untreated F devices (PCE = 14.9 %). Furthermore, the device exhibits excellent moisture resistance due to the synergistic effect of hydrophobic carbon and fluorine. After soaking in water for 1 minute, the efficiency was maintained at about 78 % compared to the existing efficiency.
지역사회 획득 폐렴(Community acquired pneumonia)에서 Roxithromycin의 효과
김중원,우준희,어수택,박춘식 대한화학요법학회 1990 대한화학요법학회지 Vol.8 No.2
Roxithromycin is a new semi-synthetic macrolide antibiotics with good absorption and a longer half-life than erythromycin. The effect and safety of oral roxithromycin for forty patients, 32 hospitalized patients and 8 out-patients, with community acquired pneumonia were evaluated. They were twenty-three males and seventeen females with mean age of 37. Twenty-five microbiologically confirmed pneumonia(8 M. pneumoniae, 5 S. pneumoniae, 4 S. aureus, 3 β-Hemolytic Streptococci, 3 H. influenzae, 1 E. coli, 1 K. oxytoca) and fifteen clinically confirmed pneumonia patients were included. All patients received 150㎎ tablet of roxithromycin twice a day enterally for seven days(but two patients for 10 days). Four patients did not improve because roxithromycin-resistant S. aureus, H. influenzae. K. oxytoca and unknown organism were the etiologic pathogens. However, transient jaundice and gastrointestinal upset developed in each patient. The remained thirty-six patients improved microbiologically and clinically. Roxithromycin appears to be an effective and safe treatment for the patients with community acquired pneumonia.
김중원,장정식 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
In the past few years, carbon-based perovskite solar cells (PSCs) have been received tremendous attentions by their remarkable long-term stability and low-cost of material and fabrication process. However, reduced charge transport capability due to the poor interfacial contact between perovskite and carbon should be solved to fabricate a highly efficient carbon-based device. Herein we introduce an effective method for post-growth of two-dimensional (2D) perovskite layer at the interface between 3D perovskite layer and carbon-electrode. 2D perovskite layer formed within perovskite/carbon interfaces improves the poor contact of carbon-electrode and obtains optimized energy band alignment. The carbon electrode-based PSCs made with 2D perovskite layer exhibited excellent photovoltaic performances, achieving efficiency over 15%. Furthermore, the devices show superior thermal and air stability due to dual protection of 2D perovskite and carbon layer.
수박접목의 생력화를 위한 기계접목 요령과 도입 가능성에 관한 연구
김중원 안동대학교 농업개발원 2001 最高農業經營者課程 論文集 Vol.5 No.-
이상으로 접목기계를 이용한 접목의 생력화를 고찰해 본 결과 몇 가지 결론을 얻을 수 있다. 첫째, 수박재배에서 가장 많은 노력이 소요되는 접목의 생력화는 필요하다는 것이며, 이것은 농촌의 현실이 경쟁력을 배양하기 위해 노력비를 줄임으로 경영비를 절감한다는 차원으로 이해가 될 문제이다. 둘째, 기계접목이 성공적으로 정착하려면 접목에 필요한 규격 묘를 생산하는 기술이다. 기존 농가의 기술수준이 상위인 농가를 제외하고는 공정 육묘업체가 선도적으로 도입 및 생산하여 농가에 공급하는 체계가 바람직하다고 생각된다. 셋째, 앞으로 채소재배에도 정식의 기계화가 도입될 것으로 본다면 수박도 정식을 기계로 한다는 전제조건하에 이러한 기술의 도입이 필요하다는 것이다.
김중원 大韓神經精神醫學會 1983 신경정신의학 Vol.22 No.3
A clinical study of depression in the relatives of head-injured patients was conducted using the patients, medical records for review and Zung's self-rating depression scale (S.D.S.). A total of 78 relatives were selected. They were eitherparents, spouses or siblings of the head injured inpatients who had been admitted to the departments of neurosurgery and neuropsychiatry, Chonnam National University Hospital. The results of the depression in the relatives were as follows: 1. The scores of the S.D.S. were higher in the relatives of head-injured patients than in the normal control group. 2. The depression was characterized by high scores in the items of dissatisfaction, sleep disturbance, diurnal variation, psychomotor retardation, hopelessness, personal devaluation and indecisiveness and by low scores in the items of suicidal rumination, constipation, crying spells, depressed affects and irritabillity. 3. S.D.S. scores were higher in the females than in the malesand in the age bracket of 20s to 50s than in any other groups. 4. The lower the educational level, the higher were the S.D.S. scores. 5. S.D.S. scores were much higher in the parents and spouses than in the siblings. 6. The longer the duration of posttraumatic amnesia (P.T.A.) of the patients the higher were the relatives' S.D.S. scores. 7. The longer the duration of the patients' hospitalization the higher were the relatives' S.D.S. scores. 8. The relatives denied mental and physical disabilities in the patients initially and went through an adjustment process analogeus to grieving and it took some time for the relatives to realize the full extent of the changes in the patients. 9. The greater the mental and physical changes in the patients following head injuries, the higher were the S.D.S. scores. The longer the duration of hospitalization, the greater were the mental and physical changes in the relatives.