국산 건조 제재목의 생산공정 개선에 따른 온실가스 저감효과 분석

장윤성,장윤성,전상진,신유진 한국가구학회 2021 한국가구학회지 Vol.32 No.4

The contribution of forests and wood as carbon sinks reflecting the situation and conditions of each country is being highlighted. The use of wood can not only directly reduce carbon due to the storage effect, but also have an indirect effect of reducing greenhouse gas emissions by replacing carbon-intensive materials. Therefore, this study was aimed to quantify the amount of carbon dioxide emissions and to suggest suitable plans which consider the carbon emission reduction in the manufacturing process of dried domestic lumber. Since the drying process is that accounts for more than 80% of the environmental impact. The environmental benefits of improving the drying energy source were analyzed based on field data collection. Results show that the carbon dioxide emissions for sawing, drying and planing process are 34.8, 20.6, 36.2 kgCO2eq./m3 , respectively. It was decreased about 37% when the fossil fuel would be replaced with biomass fuel in drying process. Based on the results of this study, it is expected that it will be possible to activate the use of domestic wood products by establishing eco-friendliness through quantification of the greenhouse gas substitution effect of wood products and linking with related systems such as environmental labeling certification.

Ar/CF₄/Cl₂ 플라즈마에 의한 CeO₂ 박막의 식각 특성 연구

장윤성,김동표,김창일,장의구 한국전기전자재료학회 2002 전기전자재료학회논문지 Vol.15 No.5

In this work, the etching of $CeO_2$ thin films has been performed in an inductively coupled $Ar/CF_4/Cl_2$ plasma. The highest etch rate of the $CeO_2$ thin film ws 250 ${\AA}/min$ and the selectivity of CeO$_2$to SBT was 0.4 at a 10% additive $Cl_2$ into Ar/($Ar+CF_4$)gas mixing ratio of 0.8. From result of X-ray photoelectron spectroscopy (XPS) analysis, there are Ce-Cl and Ce-F bonding by chemical reaction between Cl, F and Ce. During the etching of $CeO_2$ thin films in $Ar/CF_4/Cl_2$ plama, Ce-Cl and Ce-F bond is formed, and these prodcuts can be removed by the physical bombardment of Ar ions. The 10% additive $Cl_2$ into the Ar/($Ar+CF_4$)gas mixing ratio of 0.8 could enhance the reaction between Cl, F and Ce.

Resepine과 Human Chorionic Gonadotropin 이 家兎의 子宮및 골격근조직내 Catecholamine 含量에 미치는 影響

張允成 고려대학교 의과대학 1975 고려대학교 의과대학 잡지 Vol.12 No.1

블루투스 비컨을 사용한 스마트 팩토리에서의 무선인터넷 보안 연결 시스템 구현

장윤성,신수용,Jang, Yun Seong,Shin, Soo Young 한국정보통신학회 2018 한국정보통신학회논문지 Vol.22 No.12

It is currently undergoing the fourth industrial revolution, which is the convergence of ICT and manufacturing, connecting both industrial equipment and production processes to one network and communicating with each other. The fact that they are connected to one network has the advantage of management, but there is a risk of security. In particular, Wi-Fi can be easily accessed by outsiders through a software change of the MAC address or password exposures. In this paper, by applying the method of Beacon using a Bluetooth Low Energy Add in Bluetooth 4.0, we propose a system of black-box approach to secure connections to wireless Internet, users do not have to know the password. We also implemented the proposed system using the raspberry pi and verified the effectiveness of a real-time system by testing the communication.

Resepine과 Human Chorionic Gonadotropin 이 家兎의 子宮및 골격근조직내 Catecholamine 含量에 미치는 影響

張允成 고려대학교 의과대학 1975 고려대 의대 잡지 Vol.12 No.1

Catecholamine has various pharmacological effects. This might be due largely to its relation to the sympathetic nervous system. Reserpine has been widely used as a tranquilizer and anti-hypertensive drug in the obstetrical and gynecological field for last 20 years in spite of a number of untoward side effects affecting various organs. An attempt has been made to clarify the effects of reserpine on the catecholamine content in the uterine and skeletal muscle tissue of mature female albino rabbits weighing around 2㎏. A group of albino rabbits conditioned with 50 I.U./㎏ of H.C.G. and another group with 1.0㎎/㎏ of reserpine plus 50 I.U./㎏ of H.C.G. were observed in 24 hours after conditioning. Catecholamine content was determined by Shore and Olin method. The results obtained were as as follows: 1. The catecholamine content in the normal uterine tissue was 0.40 ㎍/gm, while that of the skeletal muscle tissue was 0.11 ㎍/gm. Therefore catecholamine content in the uterine tissue was much higher than that in the skeletal muscle tissue. 2. In the H.C.G. conditioned group, the catecholamine content in the uterine tissue showed decrease in content (0.13 ㎍/gm) as compared to the normal group and in the skeletal muscle tissue it showed a decrease (0.07 ㎍/gm) as compared to the normal rabbit group. 3. In the reserpine plus H.C.G. conditioned group, the catecholamine content in the uterine tissue was much more decreased in content(0.06 ㎍/gm) and the content in the skeletal muscle tissue showed a decrease (0.07 ㎍/gm) as compared to the normal rabbit group. 4. The catecholamine content in the uterine tissue showed decrease if treated with H.C.G. and much more decreased in the reserpine plus H.C.G. conditioned group. 5. The catecholamine content in the skeletal muscle tissue treated with H.C.G. and reserpine plus H.C.G. showed a decrease as compared to the normal rabbit group. 6. In the normal group, the catecholamine content in the uterine tissue was much higher than that in the skeletal muscle tissue and in the H.C.G. conditioned group, the catecholamine content in the uterine tissue was higher than that in the skeletal muscle tissue. In the reserpine plus H.C.G. conditioned group, the catecholamine content in he skeletal muscle tissue showed almost the same as that in the uterine tissue,

Cl2/Ar 유도 결합 플라즈마에 의한 gold 박막의 식각특성

장윤성,김동표,김창일,장의구,이수재 한국전기전자재료학회 2002 전기전자재료학회논문지 Vol.15 No.12

In this study, Au thin films were etched with a Cl2/Ar gas combination in an inductively coupled plasma. The highest etch rate of the Au thin film was 3500 Å/min at a Cl2/(Cl2+Ar) gas mixing ratio of 0.2. The surface reaction of the etched Au thin films was investigated using x-ray photoelectron spectroscopy (XPS) analysis. There is Au-Cl bonding by chemical reaction between Cl and Au. During the etching of Au thin films in Cl2/Ar plasma, Au-Cl bond is formed, and these products can be removed by the physical bombardment of Ar ions.[1]

적외선열화상을 이용한 목조 주택의 단열성능평가

장윤성,박준호,엄창득,김세종,박주생,박문재,이전제,여환명 한국목재공학회 2010 한국목재공학회 학술발표논문집 Vol.2010 No.-

異常性器出血의 統計學的 觀察

張允成 고려대학교 의과대학 1972 고려대 의대 잡지 Vol.9 No.1

A statistical study was made on a series of 844 cases of abnormal genital bleedings, with the review of particular references of literature, which were complained chiefly from patients among 7991 cases of out-patients at Gynecological Department of Korea University Medical College Hospital during a period of 5 years from January, 1966 to December, 1970. The results obtained were as follows: 1) The incience of abnormal genital bleeding was 10.6 per-cent. 2) In causative factors of abnormal genital bleeding, there were 55.7 per-cent of anatomical factor, 17.4 per-cent of obstetrical cases which did not belong to obstetrical hemorrhage, 23.2 per-cent of functional uterine bleeding and 3.6 per-cent of other gynecological bleeding. 3) Abnormal genital bleeding cases were obtained in 28 per-cent of pregnancy disorder, 17 per-cent of inflammation of genital organs, 28 per-cent of the tumors of genital organs, (benign tumor 17 pre-cent and malignant tumor 11 per-cent) 23 per-cent of functional uterine bleeding and 4 per-cent of other causes. 4) In the endometrial findings of 54 cases of functional uterine bleeding, there were 85 per-cent of endometrial hyperplsia, 9 per-cent of secretory endmetrium and 6 per-cent of postmenopausal atrophic endometrium. 5) The largest age distribution of functional uterine bleeding was at the age group between 30 and 40.(32 per-cent) 6) The most frequent causative disease of abnormal genital bleeding was functional uterine bleeding, (23.3 per-cent), on the contrary, salpingitis, adnexitis and urethral caruncle were rarely associated abnormal genital bleeding. (0.3 per-cent and 9.5 per-cent respectively) 7) Abnormal genital bleeding was noted most frequently at the age group 30th(31.8 per-cent) and the lowest incidence was under the age of 20th.(2.3 per-cent) 8) The benign disease of genital organ was in 43 per-cent and in the malignant disease in 13 per-cent of all abnormal genital bleeding. 9) The cervical cancer was 75.5 per-cent, the corpus cancer 11.8per-cent, the ovarian cancer 4.9 per-cent and the choriocancer 7.8 per-cent of all abnormal genital bleedings. 10) The incidence of postmenopausal bleeding was 10.0 per-cent. The bleeding due to the malignant disease of genital organs was 40.5 per-cent, and the benign disease of genital organ 53.6 per-cent and undetermined causes 5.3 per-cent of all postmenpausal bleedings.

異常性器出血의 統計學的 觀察

張允成 고려대학교 의과대학 1972 고려대학교 의과대학 잡지 Vol.9 No.1

대형 목조건축물의 탄소저장효과 분석

장윤성,김세종,심국보 한국목재공학회 2016 한국목재공학회 학술발표논문집 Vol.2016 No.2