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Canine susceptibility to human influenza viruses (A/pdm 09H1N1, A/H3N2 and B)
Song, Daesub,Kim, Hyekwon,Na, Woonsung,Hong, Minki,Park, Seong-Jun,Moon, Hyoungjoon,Kang, Bokyu,Lyoo, Kwang-Soo,Yeom, Minjoo,Jeong, Dae Gwin,An, Dong-Jun,Kim, Jeong-Ki Society for General Microbiology 2015 The Journal of general virology Vol.96 No.2
<P>We investigated the infectivity and transmissibility of the human seasonal H3N2, pandemic (pdm) H1N1 (2009) and B influenza viruses in dogs. Dogs inoculated with human seasonal H3N2 and pdm H1N1 influenza viruses exhibited nasal shedding and were seroconverted against the viruses; this did not occur in the influenza B virus-inoculated dogs. Transmission of human H3N2 virus between dogs was demonstrated by observing nasal shedding and seroconversion in naïve dogs after contact with inoculated dogs. The seroprevalence study offered evidence of human H3N2 infection occurring in dogs since 2008. Furthermore, serological evidence of pdm H1N1 influenza virus infection alone and in combination with canine H3N2 virus was found in the serum samples collected from field dogs during 2010 and 2011. Our results suggest that dogs may be hosts for human seasonal H3N2 and pdm H1N1 influenza viruses.</P>
( Aram Kang ),( Woonsung Na ),( Minjoo Yeom ),( Hyekwon Kim ),( Sun-woo Yoon ),( Heejun Yook ),( Dae-gwin Jeong ),( Daesub Song ) 대한인수공통전염병학회 2017 창립총회 및 학술대회 초록집 Vol.2017 No.1
Introduction: Middle East respiratory syndrome coronavirus (MERS-CoV), a member of the family of betacoronavirus, was first identified in Saudi Arabia in 2012. MERS-CoV has ability to cross the host species from camel to human causing severe acute respiratory illnesses, and spread by contact in human population. For diagnosis of MERS-CoV in camels, the immunochromatographic assay (ICA) has been used due to its rapid decision and prompt triage of infected animal for the early quarantine. However, when the ICA is applied to an expectorated sputum in which antigens are present, the viscosity of sputum interferes with the migration of the antigens on the test strip. To overcome this limitation, it is necessary to use a mucolytic agent without affecting the antigens. In this study, we have developed a sputum pre-treatment method by testing specimens of the sputa spiked with alphacorona virus and MERS-CoV. Methods: Two mucolytic agents were used: Tris(2-carboxyethyl) Phosphine (TCEP) and N-acetyl-L-cysteine (NALC) and prepared at various concentration to treat with sputum. Bovine serum albumin (BSA) was used as a blocking agent and protease inhibitor cocktail (PI) was used to inhibit the cleavage of the antigens. After treating the compound to sputum, the mixture was applied to colloidal gold-based immunochromatographic test strip for rapid detection of MERS-CoV or alpha coronavirus (BIONOTE Inc., South Korea). The intensities of colloidal gold were measured by MEDISENSOR Gold reader (SD BIOSENSOR Ltd., South Korea). Results: Intensity of test line was higher when the sputa spiked with alpha coronavirus was processed with TCEP, BSA and PI than with TCEP alone. In the case of the sputa spiked with inactivated MERS-CoV, mixture of TCEP and BSA presented higher intensities, while it decreased in the addition of PI. This was reproduced when compound of NALC and BSA was treated to the specimens. Conclusion: In this study, we demonstrated that mixture of the mucolytics, blocking agent and protease inhibitor together effectively dissolve the viscosity of sputum minimizing the effect on antigens, which is more suitable for use in flow immunochromatographic test kit than when sputum or mucolytics alone were used.
광유도 전해 도금법을 이용한 결정질 실리콘 태양전지용 Ni/Cu 전극 형성
홍혜권,박정은,조영호,김동식,임동건,송우창,Hong, Hyekwon,Park, Jeongeun,Cho, Youngho,Kim, Dongsik,Lim, Donggun,Song, Woochang 한국교통대학교 융복합기술연구소 2018 융ㆍ복합기술연구소 논문집 Vol.8 No.1
The screen printing method for forming the electrode by applying the existing pressure is difficult to apply to thin wafers, and since expensive Ag paste is used, it is difficult to solve the problem of cost reduction. This can solve both of the problems by forming the front electrode using a plating method applicable to a thin wafer. In this paper, the process conditions of electrode formation are optimized by using LIEP (Light-Induced Electrode Plating). Experiments were conducted by varying the Ni plating bath temperature $40{\sim}70^{\circ}C$, the applied current 5 ~ 15 mA, and the plating process time 5 ~ 20 min. As a result of the experiment, it was confirmed that the optimal condition of the structural characteristics was obtained at the plating bath temperature of $60^{\circ}C$, 15 mA, and the process time of 20 min. The Cu LIEP process conditions, experiments were conducted with Cu plating bath temperature $40{\sim}70^{\circ}C$, applied voltage 5 ~ 15 V, plating process time 2 ~ 15 min. As a result of the experiment, it was confirmed that the optimum conditions were obtained as a result of electrical and structural characteristics at the plating bath temperature of $60^{\circ}C$ and applied current of 15 V and process time of 15 min. In order to form Ni silicide, the firing process time was fixed to 2 min and the temperature was changed to $310^{\circ}C$, $330^{\circ}C$, $350^{\circ}C$, and post contact annealing was performed. As a result, the lowest contact resistance value of $2.76{\Omega}$ was obtained at the firing temperature of $310^{\circ}C$. The contact resistivity of $1.07m{\Omega}cm^2$ can be calculated from the conditionally optimized sample. With the plating method using Ni / Cu, the efficiency of the solar cell can be expected to increase due to the increase of the electric conductivity and the decrease of the resistance component in the production of the solar cell, and the application to the thin wafer can be expected.
Experimental Infection of Dogs with Avian-Origin Canine Influenza A Virus (H3N2)
Song, Daesub,Lee, Chulseung,Kang, Bokyu,Jung, Kwonil,Oh, Taehoon,Kim, Hyekwon,Park, Bongkyun,Oh, Jinsik Centers for Disease Control and Prevention 2009 Emerging infectious diseases Vol.15 No.1
<P>Susceptible dogs were brought into contact with dogs experimentally infected with an avian-origin influenza A virus (H3N2) that had been isolated from a pet dog with severe respiratory syndrome. All the experimentally infected and contact-exposed dogs showed elevated rectal temperatures, virus shedding, seroconversion, and severe necrotizing tracheobronchitis and bronchioalveolitis.</P>