http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
홍치유,조수열,백승도 동국대학교 자연과학연구소 1991 자연과학연구 논문집 Vol.11 No.-
X-ray 회절선을 조사한 결과 Ni?Cd?Fe?O?의 조성을 갖는 ltfy는 x값의 증가에 따라 inverse spinel 구조에서 normal spinel 구조로 변하며, 격자상수는 선형적으로 증가하였다. 또한 Mossbauer spectrum을 상온(300K)에서 측정하여 분석한 결과, 시료의 wrl적 성질은 x값의 증가에 따라 준강자성에서 상자성으로 변화되었으며, 시료는 Yafet-Kittel의 자기구조를 이루는 것을 알 수 있었다. According to the X-ray diffractometry, the structure of Ni?Cd?Fe?O? changes from inverse spinel to normal spinel and lattice constant varies linearly, as increasing x. From the result of the Mossbauer spectroscopic study, it is found, that the magnetic properties of Ni?Cd?Fe?O? change from ferrimagnetism to paramagnetism as increasing x, and the Ni?Cd?Fe?O? have the Yafet-Kittel magnetic structure.
인접평균 알고리즘과 웨이블릿 변환을 이용한 워터마킹 방법
홍익표,김인택,한승수 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
A new and efficient blind watermarking technique is proposed in this paper. The original image is transformed to frequency domain using wavelet transform, and the watermark is embedded to mid-frequency area via neighbor's meal value algorithm. This algorithm is a kind of blind watermarking technique, and embeds watermark using neighbor's mean value. According to the mean value, the watermark is embedded selectively and a flag is generated. We tested the robustness of this technique using JPEG compression, collusion, noise addition, and resize attacks. The results show the proposed method have good characteristics such as good watermarked image quality, robustness to various attacks.
홍성욱,김흥수 濟州大學校 産業技術硏究所 1995 산업기술연구소논문집 Vol.6 No.-
In the mobile radio communication system, we must study wave propagation characteristics for microcell and picocell environments because the conventional cellular enviornment is changing to microcell and picocell. In this paper, sample areas are selected to study propagation in variety of environment including the width of road, the built-up density and the height of building at Cheju city area. Sample area is separated two zones by break point at which the slope of the signal strength is changed. The location of the break point is calculated on first Fresnel zone clearance for antenna height variation. The slope and the standard deviation of the signal strength is obtained by the regression analysis. The break point distance can be used to define the size of microcell and to design of microcellular system.
10MgO-10Fe_2O_3-30Na_2O-5OSiO_2 유리의 Mo¨ssbauer 효과 연구
홍치유,박관호,백승도,문찬호,조수열 동국대학교 1987 論文集 Vol.26 No.-
The Mo¨ssbauer effect studies of the quenched glass and heat-treated glasses were performed. The Debye and Einstien temperatures of the quenched glass, determined using the center shift and kinetic temperature, are 540K and 430K respectively. The X-ray diffraction pattern showed that the heat-treated glasses were crystallized. Form the isomer shift of the heat-treated glasses, it was concluded that the Fe^(3+) ion is predominantly octahedrally coordinated.
Ethylenediaminetetraacetic acid(EDTA)항응고제에 의한 Mean Corpuscular Volume(MCV)변화
홍승민,박영진,최하영,임진,정옥연,이호준,이호영,장숙진,문대수 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.2
It is essential that we put the anticoagulant into the blood specimen of the CBC test. However, the value of some parameters in the CBC test can be changed whenever using some anticoagulants. EDTA anticoagulant is mostly used these days. There are 3 kinds of EDTA, that is K_(2-), K_(3-), and Na_(2-) EDTA. The author studies how many effects each the EDTA gets into the true value of blood specimen for MCV of RBCs. Especially we compared the MCV effect of different concentrations of 3 EDTA anticoagulants on the bias with time and instrument. Some results are gotten. In our results, K_(3-)EDTA anticoagulant shows more satisfactory MCV value than K_(2) or Na_(2-)EDTA. On using concentration of EDTA, 1.5㎎ EDTA/㎖ of blood show more satisfactory MCV value than 7.5㎎ EDTA/㎖ of blood. However, the choice of anticoagulant may be dependant on the different instruments.
홍경한,전상신,이승재,박찬수,권일욱,김재열,김병철,하옥남 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.4
Fin-tube type(Fin-type) heat exchanger has been tested in order to replace the heat exchanger of parallel flow type(P.F-type) which is now widly used in automobile air conditioning system. The following conclusions are drawn by the comparison of the characteristics of the heat exchangers. Evaporator and condenser capacities and COP(Coefficience of performance) were varied as with the compressor speed, outdoor air temperature and air flow rate changed, which much influenced on the characteristics of the air conditioning system. Evaporator and condenser capacities were increased with increasing compressor speed and outdoor air temperature. Evaporator and condenser pressures of Fin- type were decreased by 7% and 5% respectively compared with those of P.F-type. The COP of Fin-type was decreased with increasing outdoor air temperature and compressor speed. The COP of P.F-type was decreased by 14% compared with that of Fin-type.
가와사키병의 관상동맥 이상과 TLR2 유전자의 단일염기다형성
홍승수 외 중앙대학교 의과대학 의과학연구소 2009 中央醫大誌 Vol.34 No.3/4
Purpose: Many gene polymorphisms are associated with coronary artery abnormality in Kawasaki disease (KD). Toll like receptors (TLRs) are known to be involved in innate immunity. TLRs recognize structurally conserved molecules derived from microbes. Once these microbes have breached physical barriers such as the skin or intestinal tract mucosa, they are recognized by TLRs which activate immune responses. They activate nuclear factor-κB which produces diverse inflammatory cytokines. Polymorphism of TLR2 gene is reported to be associated with coronary artery abnormalities. The aim of this study was to evaluate the relationship between TLR2 polymorphism and coronary artery abnormality in Kawasaki disease. Methods: One hundred and one Korean children with Kawasaki disease and three hundred and six Korean healthy controls were enrolled in this study. The polymorphism of TLR2 gene was analyzed by direct sequencing. Results: There were no differences in the genotype (p =0.78) and allelic frequency (p =0.91) of the TLR2 rs3804099 and rs3804100 between KD and control subjects. There was no significant difference in TLR2 rs3804099 and rs3804100 polymorphism between patients with coronary artery lesion (CAL) and those without CAL. Conclusion: These results indicate that the polymorphisms of rs3804099 and rs3804100 in TLR2 gene might be not related in the development of coronary artery abnormalities in Kawasaki disease.