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한국 재래 산양에서 Leptospira spp.에 대한 혈청역학적 연구
한동운,권용국,문진산,윤소라,위성환,장환,탁동섭,이태욱,강문일 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.3
Between January 1999 and September 2001, 948 sera (120 from each province except 108 from Chungbuk) from 8 provinces were sampled from Korean goats. All the samples were serologically tested for Leptospira spp. By the microscopic agglutination test against four L. interrogans serovars including canicola, icterohaemorrhagiae, pomona and hardjo, 948 Korean goats were confirmed as 11 seropositives (1.2%) only infected with L. icterohemorrhagiae. All positive sera were collected from Gyeonggi (5), Gangwon (4) and Chungbuk (2). Titration of them were classified as 1:100 of 10 sera except one case with 1:200 from Gyeonggi. It was meaningful that the pathogen in Korean goats was mainly distributed in the northen part of the country. Consequently, the results in the study were confirmed and analyzed the recent status of infection of leptospirosisas zoonotic agentsome in Korean goats.
한국 재래산양에서 Bovine Viral Diarrhea, Bovine Herpesvirus-1, Parainfluenza Type-3 바이러스에 대한 혈청학적 연구
한동운,권용국,문진산,윤소라,위성환,장환,탁동섭,이태욱,강문일 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.3
The 948 goat sera were serologically tested for ten pathogens including bovine viral diarrhea (BVD), bovine herpes virus type-1 (BHV-1) and parainfluenza virus type-3 (PI-3). By viral neutralizaion test, three pathogens including BVD virus, BHV-1, PI-3 were applied for screening each neutralizing antibody and its titration. Among 948 sera, there were 215 seropositives (22.7%) against BVD virus, 25 (2.6%) against BHV-1 virus, and 161 (17.0%) against PI-3 virus, respectively. In the seropositive cases to BVD virus, provincial prevalence of them were recorded as Gyeongnam(30.8%) for the highest one, while as Jeonbuk (15.8%) and Gyeongbuk(l6.7%) relatively for the lower ones. Among them, higher than 1:8 in antibody titration was classified as 74 cases (34.4%) which were suspected the cycle of its infection in their herds. Among the seropositives to BHV-1, it was relatively lower prevalence rate ranging from 1.7% to 6.7% that those of BVD virus and PI-3, but more importantly they were prevailing across the country. Most of the seropositive cases (42.9%) to PI-3 were classified as 1:4-1:16 in titration, but also distributed all around the country. The prevalence in goats varied according to areas (15.8 to 30.8%). Related to the provincial prevalence of three viral agents in Korean goats, it seemed that three viral pathogens would be directly or indirectly involving in various disorders as primary or secondary causative agents resulting in decreased productivity.
Mun, μ Kyeom,Ho, Lee Won,Park, Jin Woo,San Kim, Doo,Yeom, Geun Young,Kim, Dong Woo American Scientific Publishers 2017 Journal of nanoscience and nanotechnology Vol.17 No.11
<P>Nanoparticles in a solution can be modified by various methods including wet treatment, UV light treatment, and plasma treatment for the functionalization of the nanoparticles. Especially, for the plasma treatment of nanoparticles in a solution, hydrophilic treatment is generally carried out by forming -OH in the solution while the plasma treatment system is located at the outside of the nanoparticle solution. In this study, using a He/SF6 atmospheric plasma jet (APPJ) sources located outside and inserted in the IPA solution with carbon black nanoparticles, carbon black nanoparticles were modified to improve hydrophobic properties. By inserting the plasma jet tip in the solution, the carbon black nanoparticles were more easily modified compared the plasma jet located outside of the solution. After the He/SF6 plasma treatment of carbon black nanoparticles with the APPJ in the solution, the contact angle of the sprayed-coated carbon black was increased from similar to 30 to similar to 140 degrees while no significant change of contact angle was observed for the carbon black nanoparticles treated by the APPJ located outside of the solution. After the He/SF6 plasma treatment, fluorine percentage of similar to 7.97% in the carbon black was observed without noticeable thickness change of carbon black nanoparticles. It is believed that, the fluorine radicals dissolved in the solution form C-F (x) bonding on the carbon black surface and increase the hydrophobicity significantly. This technique can be applied in modifying the surface properties of various other particles in solution.</P>
Nanoparticles Synthesis and Modification using Solution Plasma Process
Mun, Mu Kyeom,Lee, Won Oh,Park, Jin Woo,Kim, Doo San,Yeom, Geun Young,Kim, Dong Woo The Korean Vacuum Society 2017 Applied Science and Convergence Technology Vol.26 No.6
Across the most industry, the demand for nanoparticles is increasing. Therefore, many studies have been carried out to synthesize nanoparticles using various methods. The aim of this paper is to introduce an industry-applicable as well as financially and environmentally effective solution plasma process. The solution plasma process involves fewer chemicals than the traditional kit, and can be used to replace many of the chemical agents employed in previous synthesis of nanoparticles into plasma. In this study, this process is compared to the wet-reaction process that has thus far been widely used in the most industry. Furthermore, the solution plasma process has been classified into four different types (in-solution, out of solution, direct type, and remote type), according to its plasma occurrence position and plasma types. Thus, the source of radicals, nanoparticle synthesis, and modification methods are explained for each design. Lastly, unlike nanoparticles with hydrophilic functional groups that are made inside the solution, a nanoparticle synthesis and modification method to create a hydrophobic functional group is also proposed.