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A Comparative Study on the Spatial Statistical Models for the Estimation of Population Distribution
오두리,황철수 한국측량학회 2015 한국측량학회지 Vol.33 No.3
This study aims to accurately estimate population distribution more specifically than administrative unitesusing a RK (Regression-Kriging) model. The RK model is the areal interpolation technique that involves linearregression and the Kriging model. In order to estimate a population’s distribution using a sample region, fourdifferent models were used, namely; a regression model, RK model, OK (Ordinary Kriging) model and CK(Co-Kriging) model. The results were then compared with each other. Evaluation of the accuracy and validityof evaluation analysis results were the basis RMSE (Root Mean Square Error), MAE (Mean Absolute Error),G statistic and correlation coefficient (ρ). In the sample regions, every statistic value of the RK model showedbetter results than other models. The results of this comparative study will be useful to estimate a populationdistribution of the metropolitan areas with high population density
감마선을 이용한 케나프 펄프 표면의 Poly(ethylene glycol) Methacrylate 그라프트 중합반응
오두리,전준표,강필현 한국방사선산업학회 2012 방사선산업학회지 Vol.6 No.3
Pulp is typically used for paper industry to manufacturing various types of papers. Howeversimply chemical modification makes enable the pulp to a wide range of application in variousindustrial fields. To bring the polymerization the gamma ray irradiated on the mixture of kenafand PEGMA in various dose ranges from 20 to 60 kGy. As a results, the graft degree of 20.0% wasobtained from 475 g of gamma ray irradiated pulp and PEGMA. After the polymerization, the chemicalstructure and morphology of the surfaces were examined by Fourier transform infrared spectroscopy,thermogravimetric analysis, and scanning electron microscope. Chemical structure ofgrafted pulp has significantly growth in carbonyl content with increasing the radiation dose. Alsosurface morphology was distinctly changed with decreased the degree of roughness and increasingthe diameter. These results were explained gamma ray irradiation improve performance of graftpolymerization efficiency.
오두리,전준표,신혜경,강필현 한국방사선산업학회 2012 방사선산업학회지 Vol.6 No.2
Kenaf (Hibiscuc cannabinus L.) is a renewable resource for industry and kenaf ligninis syringyl-guaiacyl lignin. The electron beam irradiated on kenaf core various doses range from200 to 1,000 kGy to improve delignification. The yield of lignin, which is 2.53 g from 10 g of electronbeam irradiated kenaf core. A comparison extracted lignin between from native kenaf core andelectron beam irradiated kenaf core was then studied through chemical structure and bondingproperty by a Fourier transform infrared spectroscopy (FT-IR). Thermal stability of the extractedpurifiedlignin was performed via differential scanning calorimetry (DSC). These results wereexplained that electron beam irradiation increased performance of extracting efficiency.
오두한,김종현,김연섭,김송이 경락경혈학회 2019 Korean Journal of Acupuncture Vol.36 No.3
Objectives : Although the tonification and sedation method such as mountain-burning fire method and heaven-penetrating cooling method, is one of the important techniques that have been claimed to increase the effect of acupuncture, research on this has been sparse. The aim of this study is to provide an understanding of tonification and sedation methods in the 『Yeongsochimgugyeong』. Methods : We analyzed the similarities and differences by comparing the contents of the tonification and sedation method described in books 『Yeongsochimgugyeong』 and 『Complete Compendium of Acupuncture and Moxibustion』. Results : A total of 28 out of the 33 tonification and sedation methods described in 『Yeongsochimgugyeong』 were compared with those in 『Complete Compendium of Acupuncture and Moxibustion』. As a result, we found that many of the tonification and sedation methods recorded in 『Yeongsochimgugyeong』 were based on more detailed and specific clinical cases. Conclusions : The tonification and sedation methods in 『Yeongsochimgugyeong』 were not only descriptive and consistent in describing that methods, but also contains valuable information for clinical use. In the future, based on this research, we will be able to clinically implement these tonification and sedation methods and quantitatively evaluate them.
장관세포인 HT-29 에 존재하는 디펩티드수송체의 Xenopus oocyte 에서의 발현
오두만,양재하 한국약제학회 1995 Journal of Pharmaceutical Investigation Vol.25 No.4
Cloning the gene encoding a dipeptide transporter is necessary for understanding the absorption mechanism of peptides and peptide-like drugs in the gastrointestinal tract. Functional expression of a dipeptide transporter after microinjection into Xenopus laevis oocytes was performed using the mRNA purified from human intestinal HT-29 cells. Fifty nanoliters of purified mRNA (1 ㎎/mL) were microinjected into healthy oocytes followed by incubation for 4 days in order to express a dipeptide transporter. Functional expression was determined by a uptake assay using 10Ci/mL [³H]-glycylsarcosine, a dipeptide substate of the transporter. Seasonal variability and batch-to-batch variability were greater in summer. The usage of beveled micropipettes improves viability of oocytes at 4 days after microinjection. Expression of a dipeptide transporter in oocytes after microinjection of mRNA obtained from HT-29 cells was significantly larger than those after microinjection of water or mRNA obtained from the rabbit intestine.