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생약 복합제제의 약효 연구 (제24보) : 자령탕 및 가미자령탕의 이뇨, 해열, 소염 및 진통작용에 대하여
홍남두(Nam Doo Hong),김종우(Jong Woo Kim),두호경(Ho Kyung Doo),조영환(Young Whan Cho),황화수(Hwa Soo Hwang) 한국생약학회 1985 생약학회지 Vol.16 No.3
The investigation was aimed to study effects of Shirhyung-tang extract and Kamishirhyung-tang extract on the diuretic, antipyretic, anti-inflammatory, analgesic and the injuried kidney induced by HgCl₂. The extract was administered to the experimental animals. The following results have been obtained. Duiretic effect was noted to be significant in extracts of Shirhyung-tang and Kamishirhyung-tang. Antipyretic effect was noted to be significant according to the density of Shirhyung-tang and Kamishirhyung-tang. Anti-inflammatory effect was noted to be significant in extract of Shirhyung-tang and Kamishirhyung-tang. Analgesic effect was noted to be significant in extracts of Shirhyung-tang and Kamishirhyung-tang.
Characteristics of Pt-Ru Catalyst Supported on Activated Carbon for Direct Methanol Fuel Cell
Doo-Hwan Jung,Jae-Hoon Jung,Seong-Hwa Hong,Dong-Hyun Peck,Dong-Ryul Shin,Eui-sik Kim 한국탄소학회 2003 Carbon Letters Vol.4 No.3
The Pt-Ru/Carbon as an anode catalyst supported on the commercial activated carbon (AC) having high surface area and micropore was characterized for application of Direct Methanol Fuel Cell (DMFC). The Pt-Ru/AC anode catalyst used in this experiment showed the performance of 600 mA/cm2 current density at 0.3 V. The borohydride reduction process using NaBH4, denoted as a process A, showed much higher current and power densities than process B prepared by changing the reduction and washing process of process A. The particle sizes are strongly affected by the reduction process than the specific surface area of raw active carbon and the sizes are almost constant when the specific surface area of carbon are over than the 1200 m2/g. Smaller particle size of catalyst and more narrow intercrystalite distance increased the performance of DMFC.
An Integrated QoS Support Architecture for Wireless Home Network Based on IEEE 802.11 Wireless LAN
Hong, Sung-Hwa,Kim, Byoung-Kug,Eom, Doo-Seop Institute of Korean Electrical and Electronics Eng 2007 전기전자학회논문지 Vol.11 No.4
In this paper, to support a QoS level appropriate to the user in Wireless Home Network based Wireless LAN, we propose a QoS support architecture which includes Wired Network and Wireless Network. Actually, an important problem to support QoS in Wireless Home Network is approached not only on a MAC level in Wireless LAN but also on a integrated method to combine Network layer with Datalink layer. By applying the integrated QoS support method, it is possible to provide QoS support architecture using a Wireless LAN terminal with a minimum changing, and the proposed scheme has advantage of QoS support method, which is more superior than a existing scheme to support QoS in MAC level of Wireless LAN. Simulations results show that overall performance of the proposed scheme can be improved.
Sung-Hwa Hong,Byongguk Kim,Doo-Seop Eom IEEE 2007 IEEE transactions on consumer electronics Vol.53 No.3
<P>In the future ubiquitous home network, sensors will collect various home environment data in the home. Since the sensor nodes are equipped with small, often irreplaceable, batteries with limited power capacity, it is essential that the network be energy-efficient in order to maximize its lifetime. Our study, described in this paper, was divided into two classes: the primary class was to set a power-based level and the secondary class was to propose an offer of a home automation using a routing technique centered on a sensor network to set a flooding level. The proposed scheme divides the home into areas such as rooms and locates the WENs in each area. The WENs collect data from sensors and deliver the data to the home base station only. Sensors deliver the data to the WENs or the home base station through the sensor with the stronger power. Performance results show that the proposed scheme is more, efficient with a wireless home network.</P>