Trichlorosilane 의 환원에 의한 고순도 Silicon 제조

이종화,주웅길,고경신 대한금속재료학회(대한금속학회) 1976 대한금속·재료학회지 Vol.14 No.1

Among the several known processes of semiconductor-grade silicon production, the hydrogen reduction of trichlosilane (TCS) is found to be the most convenient and economical method. In this study of high purity silicon production, the open tube flow process is used to reduce TCS with hydrogen. 99.9% pure TCS, manufactured by Ventron, is distilled for the starting material in the reduction. The distilled TCS is vaporized by bubbling at 0℃ with small quantity of hydrogen in a quartz tube. The resultant yield is compared with the theoretical one calculated thermodynamically. The yield of silicon is 60-70% at the optimum condition of 1100℃ reaction temperature and 60-100 mole ratio of hydrogen to TCS. Surface of the deposited silicon, a polycrystalline dense mass of lustrous appearance, is treated with hydrofluoric acid. By the emission spectroscopy the purity of silicon product is determined to be higher than 99.999%.

농민의 빈곤화와 정책과제

이종화 한국빈곤문제연구소 2003 세미나 자료집 Vol.2003 No.1

Serum IgE Immune Response on the Exposure of Korean Ginseng

이종화,박경미,박화진 한국응용약물학회 1994 학술대회 Vol.1994 No.1

西海岸 김 養殖場에 관한 硏究 : Ⅳ. 鰲川灣 養殖 김의 生長과 生産量 分析

李鍾和 군산대학교 1993 群山水産專門大學 硏究報告 Vol.28 No.1

As a part of the biological primary investigation of the cultural laver farms at Ochon Bay, in order to investigate the growth and the production of cultural laver, the five culturing grounds in Chungnam province Boryong-gun Ochon-myon and Hongsong-gun Chonbuk-myon were selected, at the comparative laver ground, the Haje in Chonbuk province Okku-gun was selected and all the laver culturing grounds were investigated every month during the laver culturing period from November 1987 to March 1988. Samples were taken randomly at each laver ground sites, and the length, width, wet and dry weight of laver blades were checked about 30 individuals per 10cm laver net string. As quantitative analysis of culturing laver growth, length, width, blade area, wet and dry weight of laver were compared with by each culturing grounds, and qualitative analysis of culturing laver growth, on the length and width of laver, morphological variations were compared with the growing condition of each grounds by having allometric growth coefficient. In the analysis of variance of laver length below 5cm, the significant difference among the all laver grounds was not admitted(F935=0.882, p〈0.05), but in the laver length above 5cm, the significant difference among all laver grounds was admitted(F934=2.341, p〉0.05). the significant difference beteewn D ground and other grounds was admitted(P〉0.01), MP ground and B, E ground(P〉0.05), OS ground and A, B, C, E, UP, MP ground(P〉0.05 or P〉0.01) and the comparative ground HJ ground and B, E, LP, OS ground(P〉0.05 or P〉0.01) of Ochon Bay was admitted significant difference, but between the other laver culturing grounds was not admitted. On the licence laver culturing grounds, the daily allomatric rate of laver width to length was C〉E〉A〉B〉D ground in order, 0.8390, 0.7122/day, 0.5686/day, 0.3029/day, - 0.0692/day in respectively, on the unlicensed and comparative grounds it was UP〉HJ〉LP〉MP〉OS ground in order, 0.8207/day, 0.7233/day, 0.5633/day, 0.5321/day, 0.4771/day in respectively. The mean wet weight of laver per 10cm net string was 4.405/10cm at MP, 4.259g/10cm at A, 4.214g/10cm at UP, 3.907g/10cm at C, 3.259g/10cm at OS, 3.181g/10cm at LP, 2.434g/10cm at E, 2.348g/10cm at B, 0.363g/10cm at D ground, and the mean dry weight of laver per 10cm net string was 0.253g/10cm at UP, 0.239g/10cm at A, 0.236g/10cm at MP, 0.208g/10cm at C, 0.202g/10cm at LP, 0.195g/10cm at OS, 0.157g/10cm at E, 0.151g/10cm at B, 0.037g/10cm at D ground, and the wet and the dry weight in the comparative ground(HJ) was 5.055∼0.311g/10cm in respectively those were more high than 3.156∼0.186g/10cm of all grounds in Ochon Bay. At the Ochon Bay laver culturing grounds, the number of individuals on the laver net string was 849∼1,527 indiv./10cm in the cultural beginning period, November and December, and 171∼753 indiv./10cm in the middle and latter period, January∼March. At the comparative ground(HJ) 915∼1,384 indiv./10cm in November and December, 245∼613 indiv./10cm in the middle and latter period, January∼March, and the number of individuals on the net string in the Ochon Bay laver culturing grounds was smaller than the number of comparative ground. At the Ochon Bay grounds, the net production per chaek to blade per unit area blade(BP), the wet weight(WP) and the dry weight(DP) that were estimated by production of culturing laver was calculated by following formula, and the net production per chaek of blade area, wet weight and dry weight was 11.0 sok/chaek, 10.8 sok/chaek, 10.0 sok/chaek, the gross production was 54.9 sok/chaek, 53.8 sok/chaek, 49.8 sok/chaek in respectively. On the net production per chaek of blade area, wet weight and dry weight of comparative laver culturing ground(HJ) was 17.6 sok/chaek, 17.3 sok/chaek, 16.6 sok/chaek, the gross production was 88.0 sok/chaek, 86.5 sok/chaek, 83.0 sok/chaek in respectively. BP = ((L×S×(A1/10cm)/A2)×I)/A3 (L : one net string, 10,078cm, S : ten net, A1 : blade area of a unit of area on the 10cm net string, A2 : one chang of dry laver, 750cm2, A3 : blade area of one cutting production a unit of area on the 10cm net string, 1,000cm2) WP = ((W1/10cm)×L×S)/W2 (W1 : wet weight of a unit of weight on the 10cm net string, L : one net string, 10,078cm, S : ten net, W2 : wet weight of one sok, 3,156g/sok) DP = (D1/10cm)×L×S)/D2 (D1: dry weight of a unit of weight on the 10cm net string, L : one net string, 10,078cm, S : ten net, D2 : dry weight of one sok, 202g/sok).

"分斷國의 現實과 統一政策" : 統一理念으로서의 民族主義 比較 및 活用方案 硏究

이종화 韓國外國語大學校附設 韓國地域問題硏究所 1987 統一論叢 Vol.8 No.-

Chitosan 에 의한 인삼 callus 단백질의 인산화 반응

이종화,박지창,최광태,채쾌 생화학분자생물학회 1991 생화학분자생물학회 추계학술발표논문집 Vol.1987 No.-

K.Wicksell의 自然的資本利子槪念과 그의 貨幣理論

李鍾和 연세대학교 산업경영연구소 1963 산업과경영 Vol.1 No.1

資金循環分析을 통해서 본 韓國의 金融構造(1962~1964)

李鍾和 연세대학교 산업경영연구소 1963 산업과경영 Vol.1 No.1

항암요법 후의 성선 기능에 관한 연구

이종화,노흥규 충남대학교 의과대학 지역사회의학연구소 1988 충남의대잡지 Vol.15 No.1

In order to evaluate the effects of cytotoxic chemotherapy on gonadal function in cancer patients, the author interviewed 22 male and 19 female cancer patients about libido and sexual activity and menstrual pattern with postmenopausal symptom before and after chemotherapy. The status of libido was classified as strong, moderate, weak, or none and the menstrual pattern was classified as regular, irregular, or none. The serum gonadotropin levels(FSH, LH) and gonadal hormone levels(Testosterone, Estradiol) were determined by radioimmunoassay in the patients after the cytotoxic chemotherapy. The results were as follows: 1. Libido was decreased in 14 out of 22 male patients (63.6%) and 14 out of 15 female patients (93. 3%) after chemotherapy for various malignant conditions. 2. Menstrual patterns were changed in 15 out of 19 female patients (78. 9%) after chemotherapy and postmenopausal symptom was found in 15 patients with abnormal menstrual patterns. 3. Primary gonadal dysfunction occured in 16 out of 22 male patients(72.7%) and 16 out of 19 female patients (84.2%) after chemotherapy. 4. The serum gonadotropin levels were higher and estradiol level was lower in subjects with abnormal menstrual patterns than in subjects with normal menstrual patterns. The statistical significance was noted only in serum FSH levels(p<0.05). 5. The serum gonadotropin levels were higher and gonadal hormone levels were lower in subjects with no sexual activity than in subjects with weak sexual activity. The difference between two groups was significant in male patients(p<0.05) but was not significant in female patients. 6. The serum gonadotropin levels were higher and gonadal hormone levels were lower in patients above the age of 30 years than in patients below the age of 30 years. However, except the serum FSH level in male patients(p<0.05), all other hormonal levels showed no statistical difference in the two groups. The results of this study indicate that cytotoxic chemotherapy influences the libido and gonadal function of cancer patients adversely. Serial measurements of gonadotropic hormones as well as gondal hormones would be valuable in the assessment of sexual function in such patients, The clinician is called upon the proper counseling and preventive measures in the management of cancer patients, especially reproductive ages.

미국 달러화 위조 통제정책

이종화 경찰대학교 2007 경찰학연구 Vol.7 No.2

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