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전해질 첨가에 따른 키토산/Sodium Dodecyl Sulfate 상호작용의 변화
배현숙,강인숙 한국의류학회 2003 한국의류학회지 Vol.27 No.5
The change of interactions of anionic surfactants, sodium dodecyl sulfate(SDS) and sodium tetradecyl sulfate(STS) in the presence of electrolytes, to the chitosan-based polyelectrolyte(sol'n and gel phase) were studied. The chitosan gel used in this study were crosslinked with epichlorohydrin(ECH). Binding isotherms were determined by potentiometric technique using a surfactant ion selective solid-state electrode and the results were represented by using the sequence generating function(SGF) method. The results of binding isotherm were shown comparatively high cooperativity. The addition of electrolytes in the chitosan/SDS system resulted in a shift of the binding to higher free surfactant concentration because of screen effect by the electrolytes. Degree of binding of chitosan gel was higher than that of chitosan sol'n. And also a conformational phase transition gel in the presence of electrolytes has been investigated.
함불소 공정부산물을 활용한 규불화염계 구체방수재의 공학적 특성에 관한 연구
강용식,길배수,남재현 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
This study wishes to apply when added Metal Silicofluoride waterproofing admixture to concrete, grasp engineering special quality and confirms the optimum recruitment stock. Through various experiments, got following conclusion. Did not give big Influence in slump in result in fresh concrete. Displayed High result most in compressive strength wave and 1.5% in hardened concrete. High permeability resistivity at waterproofing admixture addition was seen in permeability test. SEM observation wave and synergistic effect of compressive strength and reason of pitcher reduction performance. When see all these sequences, optimum recruitment stock estimates that 1.5% is the most suitable mixing amount.
김현배,조강명,원유헌 弘益大學校 科學技術硏究所 1995 科學技術硏究論文集 Vol.6 No.-
The BLP security model is a formal descritiption of the allowable paths of information flow in a securie system. The properties of BLP security model for secure flow of information are simple security property and *-property. However, it did not consider the the integrity of data. In this paper, the abstract security model to enforce security and integrity was introduced. The properties of the abstract model are consisted of read property, write property, and create property. They were modified from BLP security model to enforce integrity. The abstract security model was implemented on Linux system by adding MAC (Mandatory Access Control) function to the kernel which is responsible for file management.. MAC function satisfies the properties of the abstract model.
김명현,배강목,이승기 경희대학교 산학협력기술연구원 1997 산학협력기술연구논문집 Vol.3 No.-
The use of carbon coated fuel particles was applied to the PWR fuel assembly design in order to enhance the safety The feasibility of assembly design was tested and optimum design parameters were sought for the fuel assemblies with particle fuels. Fuel temperature coefficient and moderator temperature coefficient were shown to be all negative, at the operating temperature range. The average fuel temperature at the full power condition was found to be reduced by 150℃ compared to the conventional PWR. A reactor core could be designed within acceptable limits when the core was loaded only with these fuel assemblies.
양방향 링크를 갖는 개선된 DSR Ad Hoc 라우팅에 관한 연구
김현욱,이광배,김정일,최동근 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
In this paper, we enhanced the existing DSR routing protocol for ad hoc networks with bidirectional link. In mobile ad hoc network, mobile nodes themselves have router capability. Thus, for communication between two mobile nodes, the routing protocol for route set-up is required. DSR routing protocol, which is one of famous mobile ad hoc routing protocols, has the following problem: when route error occurs, the sending data packets drop as route recovery is delayed. In order to alleviate such problem, we modified route maintenance process of the existing DSR protocol so that the route recovery time from route error was shortened. As the result of performance evaluation, it was found the route recovery time of the proposed routing protocol was about 12 times faster than that of the existing DSR protocol. In addition, the data reception rate was more than 90 % for mobile ad hoc networks with slow mobility.
RT-LAMP를 이용한 콩황화일반모자이크바이러스의 진단
배대현, 이영훈, 김봉섭, 윤영남, 강범규, 최만수, 구성철, 김현태, 윤홍태, 이수헌, 백인열 忠北大學校 農業科學硏究所 2014 農業科學硏究 Vol.30 No.2
Soybean yellow common mosaic virus (SYCMV) has been recently reported, it has been occurred a lot with Soybean mosaic virus (SMV) and Soybean yellow mottle mosaic virus (SYMMV) in soybean field. SYCMV belongs to genus of Sobemovirus and induced viral symptoms with yellowing, mottle and mosaic. A reverse transcription loop-mediated isothermal amplification (RT-LAMP) method allowed one-step detection of gene amplification by simple procedure and needed only a simple incubator for isothermal template. This RT-LAMP method allowed direct detection of RNA from virus-infected plants without thermal cycling and gel electrophoresis. In this study, we designed RT-LAMP primers named SYCML-F3/B3/FIP/BIP from coat protein gene sequence of SYCMV. After the reaction of RTLAMP, products were identified by electrophoresis and with the detective fluorescent dye, SYBR Green I. under daylight and UV light. Optimal reaction condition was at 63 for 60min and the primers of RTLAMP showed the specificity for only SYCMV tested in this study.
비대칭 경로를 지원하는 개선된 DSR 라우팅에 관한 연구
이광배,김현욱,곽승욱,박용정 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
This paper introduces a dynamic source routing protocol supporting asymmetric routes on mobile ad hoc network. For performance evaluation, average route discovery time, average data transfer time, average route recovery time and data reception rate were considered with several scenarios relating to connection pattern, moving scenario, usage of secondary route chche in intermediate nodes and periodic hello message interval. As the results, we found that the data reception rate increased as the node mobility went down and the number of maximum connections between nodes was reduced. In the case that secondary route cache was used in the intermediate nodes, the average data transfer time was decreased because the possibility of route discovery to destination node was increased. In addition, it was found that the hello message interval at 0.1 to 1 second was fairly good.
박강민,양현우,이성훈,배종석 인제대학교 2008 仁濟醫學 Vol.29 No.-
Hypertensive encephalopathy is a medical emergency of which clinical manifestations are associated with bilateral posterior cerebral lesions. However, neuroimaging findings have been reported in only a few cases. We describe a case of hypertensive encephalopathy in which high blood pressure was accompanied by headache, generalized seizure and mental deterioration and T2 weighted magnetic resonance images showed hyperintense lesions in the pons and left occipital lobe. The lesions were nearly disappeared after stabilization of blood pressure, suggesting that induced edema could be the main cause of the MR imaging-observed hyperintensity.