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Molecular Detection and Genetic Diversity of Blastocystis in Korean Dogs
서상수,이해승,서민구,김규태,Kyung-Yeon Eo,권영삼,박상준,권오덕,김태환,곽동미 대한기생충학ㆍ열대의학회 2022 The Korean Journal of Parasitology Vol.60 No.4
Blastocystis is a genus of unicellular heterokont parasites belonging to a group of organisms known as Stramenopiles, which includes algae, diatoms, and water molds. Blastocystis includes several species that habitat in the gastrointestinal tracts of organisms as diverse as humans, farm animals, birds, rodents, reptiles, amphibians, fish, and cockroaches. It is important to public health and distributed globally, but its prevalence in dogs in Korea has not been reported to date. Here, we collected 787 canine fecal samples and assessed Blastocystis infection by age, sex, region, season, and diarrhea symptoms. We determined Blastocystis subtypes using phylogenetic analyses based on 18S rRNA gene sequences. We identified, 10 Blastocystis positive samples (1.3%). A higher proportion of infected dogs was asymptomatic; however, infection rates did not significantly differ according to region, age, sex, and season. Phylogenetic analysis showed that the Blastocystis sp. identified belonged to 4 subtypes (STs), ST1, ST5, ST10, and ST14, thus revealed the genetic diversity of Blastocystis sp. in dogs Korean. This is first report on the presence of Blastocystis sp. in dogs Korean. This study revealed a lower infection rate than expected and differed from previous studies in STs. Further studies are warranted to observe the national infection status of Blastocystis in dogs and the genetic characteristics of this genus.
徐相壽 충주대 2000 한국교통대학교 논문집 Vol.35 No.2
In design of transformer, there are some methods to determine a constant such as design-computation method and characteristic-computation method. This paper present the design of the laminated transformer which has a good efficiency.It is designed on the base that is a statistical data for constants of transformer.
徐相壽 충주대학교 산업과학기술연구소 2002 産業科學論文集 Vol.10 No.-
Single phase core type transformer is well known as a basic of distribution transformer. This paper present that is able to reduce deviation in design constant and it is available when these type transformer design as a useful reference.
서상수 ( Sang Soo Seo ),권순철 ( Sun Cheol Kwon ),이상룡 ( Sang Ryong Lee ) 대한경락경혈학회 2004 Korean Journal of Acupuncture Vol.21 No.1
Objectives: The aim of this study was to examine the effects of electroacupuncture(EA) at the H(7) (Shinmun) on normal humans using power spectral analysis. Methods: EEG power spectrum exhibit site-specific and state-related differences in specific frequency bands. In this study, power spectrum was used as a measure of complexity. 32 channel EEG study was carried out in 9 subjects (9 males; age=25,8 years). Results: In alpha band, the power values at Fp2 channels(p<0.05) during the H7-acupoint treatment significantly were decreased. In beta band, the power values at Fp1, Fp2 channels(p<0.05) during the H7-acupoint treatment significantly were decreased. In delta and theta band, the power values at the H7-acupoint treatment significantly was increased than the before-acupuncture treatment. Conclusions: This results suggest that electroacupuncture at the H7 is significantly in beta band of EEG.
서상수 忠州大學校 1982 한국교통대학교 논문집 Vol.15 No.2
There is a wound rotor induction motor which is often used for industry. The writer studied the methed which restores electric power to the line bus by using rectifier instead of starting resistance to control efficiantly the speed control of this motor, and obtained the desired result.