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전체 선택해제
총 254건 검색
본문검색 결과만 보기
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Use of stream environment by river otters in Hongcheon river, Gangwon Province, Korea
Sangdon Lee 한국습지학회 한국습지학회지 5 Pages
한국습지학회 한국습지학회지 2015, Vol.17 No.4 9 402-406 (5 pages)
second order stream therefore is a tributary of Hongcheon river. This river has discharge of 0.650 m 3 /sec/km 2 at junction point with Hongcheon river and catchment area of 345.09 km 2 . Water course length of this river is about 54.5 km. The annual average precipitation is 1296.23 mm of which 70.3% is made up by precipitation in June, July, August and September. Water quality is moderate.... This study aims at favorable environmental conditions by river otter residing in Hongcheon river ecosystems using spraints along the river. Otter spraints were indicative of habitat use pattern and marking a territory in the areas. Nae-chon and Kuneob-chon river otter spraints were collected totaling 478 with 8 times during 2009-2011, and based on the number river use patterns were analyzed with the technique of index of dispersion. Results with larger than one indicated that river otter habitat... -
Analysis of Water Quality improvement of Upper Stream for the Chung-ju Dam according to Reducing Pollution Using QUAL2E Model
Chang-Wha Han, Jong-Seok Park, Jun-Shik Shin, Jae-Joo Lee, Ui-Gyu Hwang, Kyoung-Hoon Rhee 한국습지학회 한국습지학회지 10 Pages
한국습지학회 한국습지학회지 2014, Vol.16 No.1 1 1-10 (10 pages)
known throughout the country. On basis of this research, regulations and politic alternatives are required in order to water quality improvement upper stream for the Chung-ju dam, especially establishing processing facilities in the region where loading amount is concentrated should be considered with the additional research regarding cost-efficient facility of pollution source. Keywords :... applied to simulation of river water quality because the QUAL2E has high credibility among water quality simulations known throughout the country. On basis of this research, regulations and politic alternatives are required in order to water quality improvement upper stream for the Chung-ju dam, especially establishing processing facilities in the region where loading amount is concentrated should be considered with the additional research regarding cost-efficient facility of pollution source. -
Curriculum for a Subject using Cloud-based SW to Enhance Untact Education Capabilities of Field Teachers
Hur Kyeong 경인교육대학교 교육연구원 The Journal of Education 15 Pages
경인교육대학교 교육연구원 The Journal of Education 2020, Vol.3 No.2 7 109-123 (15 pages)
t guides the In the 2016 PT file, and ing the PPT broadcasting stream code the concept dvance, and deo through formance in n a buil t-in derstand the S training. is provided. ontent, it is ctor and the ..PAGE:8 screen visi accounts. F are invited invite them screen to th to the subje and quizze presented q score and downloadi n understand (a [Figure In the This site to The advan... In this paper, a practical curriculum for using cloud software (SW) is proposed that can be applied as a subject for strengthening the untact education capability of field teachers. For untact education, teachers require content creation and online collaboration skills. Content creation forms are divided into real-time and video contents. Cloud-based SW can be used for online collaboration education. Currently, cloud-based Google and Chrome SW can be used to create real-time and video contents.... -
Microglial involvement in the development of olfactory dysfunction
Yoojin Seo, Hyung-Sik Kim, Kyung-Sun Kang 대한수의학회 Journal of Veterinary Science 12 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 3호 1 319-330 (12 pages)
main neurogenic centers, the SVZ, possesses adult neural stem cells and produces neural progenitors upon stimulation. These neuroblasts traverse the rostral migratory stream to the OB, where they mature and differentiate into granule cells and periglomerular neurons [22]. Although there is debate on the presence of OB neurogenesis in human adults, it has been reported that newly generated OB... Olfactory impairment is the most common clinical manifestation among the elderly, and its prevalence increases sharply with age. Notably, growing evidence has shown that olfactory dysfunction is the first sign of neurodegeneration, indicating the importance of olfactory assessment an early marker in the diagnosis of neurological disorders. In this review, we describe the nature of olfactory dysfunction and the advantage of using animal models in olfaction study, and we include a brief... -
Evaluation of the ureteral jet in dogs by using color Doppler ultrasonography
Hyunjung Oh, Seongsoo Kim, Suyeon Kim, Jeosoon Lee, Sookyung Yun, Junghee Yoon, Joohyun Jung, Mincheol Choi 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 3호 17 399-406 (8 pages)
(VUJ) into the urinary bladder lumen via peristaltic contraction of the ureter. On two-dimensional ultrasonography (US), ejected urine is visualized in the form of a low-intensity echogenic stream from the ureteral orifice. However, color Doppler US demonstrates this phenomenon more clearly, and the use of pulsed Doppler US allows further characterization of the jet [5,10,19,20,29,30]. Many... Ureteral jets are the result of a forceful ejection of urine from the vesicoureteral junction into the urinary bladder. By using color Doppler ultrasonography (US), we aimed to identify distinct ureteral jets in dogs, provide insight into ureteral obstruction, and facilitate study of urodynamics and vesicoureteric sphincter function via pulsed Doppler US. Color Doppler US was applied to detect urinary flow from the right ureteral orifices in eight healthy beagles. Under anesthesia, 0.9% saline... -
Tissue distribution of marbofloxacin in pigs after a single intramuscular injection
Fan Yang, Yiming Liu, Zhili Li, Yuqin Wang, Baobao Liu, Zhensheng Zhao, Bianhua Zhou, Guoyong Wang 대한수의학회 Journal of Veterinary Science 5 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 2호 6 169-173 (5 pages)
a stream of nitrogen at 30 oC and reconstituted in 1 mL mobile phase for tissues and 0.6 mL mobile phase for plasma. The processed samples (50 L) was injected into a Hypersil BDS-C18 column (4.6 mm × 250 mm, 5 m; Elite Analytical Instruments, China) which was kept at 30 o C. The mobile phases for HPLC analysis comprised 12.5% water, 12.5% acetonitrile, and 75% buffer which consisted of 1%... Tissue distribution of marbofloxacin was studied in pigs after a single intramuscular injection at 2.5 mg/kg body weight. Samples of plasma, muscle, liver, kidney, heart, lung, and muscle at the injection site were randomly collected from five pigs at 2, 6, 10, 24, 48, 72, and 96 h after administration. Marbofloxacin concentrations were determined by using high-performance liquid chromatography with ultraviolet detection and were subjected to non-compartmental analysis to obtain kinetic... -
Preparation and evaluation of enrofloxacin microspheres and tissue distribution in rats
Fan Yang, Jijun Kang, Fang Yang, Zhensheng Zhao, Tao Kong, Zhenling Zeng 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 2호 4 157-164 (8 pages)
under a stream of air at 30 oC. The remaining residue was dissolved in 0.5 mL mobile phase, vortexed for 1 min, and centrifuged for 15 min at 12,000 × g. The supernatant was transferred to a sample vial. Conditions for chromatographic detection of the drugs in rat plasma and tissues were the same as those listed above. The method presented here was linear for both ENR (from 0.05 g/mL) and... New enrofloxacin microspheres were formulated, and their physical properties, lung-targeting ability, and tissue distribution in rats were examined. The microspheres had a regular and round shape. The mean diameter was 10.06 μm, and the diameter of 89.93% of all microspheres ranged from 7.0 μm to 30.0 μm. Tissue distribution of the microspheres was evaluated along with a conventional enrofloxacin preparation after a single intravenous injection (7.5 mg of enrofloxacin/kg bw). The results... -
In vivo metabolism of Talosin A, new isoflavonol glycoside from Kitasatospora kifunensis, in rats
Jong-Hwan Lim, In-Bae Song, Youn-Hwan Hwang, Myoung-Seok Kim, Jong-Woo Kim, Jin-Yong Kim, Joo Won Suh, Hyo-In Yun 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 2호 2 115-120 (6 pages)
a stream of nitrogen. The residue was reconstituted with a mobile phase. Preliminary studies and the hydrolysis experiments in the present study showed that this protocol results in the complete hydrolyzation of conjugated GT or GT-Tal [9,15,24]. For the quantification of free GT, GT-Glu, or GT-Tal (unconjugated forms) plasma concentration, thawed plasma samples were extracted as described... The isoflavonol glycoside Talosin A, genistein (GT)-7-a-L-6- deoxy talopyranose (GT-Tal), was first isolated from the culture broth of Kitasatospora kifunensis MJM341. The aim of the present study was to evaluate the oral absorption and metabolism of the newly isolated isoflavonol glycoside, GT-Tal compared to genistin (GT-7-O-b-D-glucopyranoside; GT- Glu). Free GT-Glu and GT-Tal could not be detected prior to enzymatic hydrolysis of the corresponding conjugates in rat plasma. Following oral... -
Effect of dihydrotestosterone on mouse embryonic stem cells exposed to H2O2-induced oxidative stress
Mi Na Lee, Sang Hun Lee, Min Young Lee, Yun Hee Kim, Jae Hong Park, Jung Min Ryu, Seung Pil Yun, Yu Jin Lee, Mi Ok Kim, Kwangsun 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 3호 4 247-256 (10 pages)
is a down stream target of JNK and p38 MAPK. In addition, DHT treatment inhibited the H 2O2-induced activation of these signaling molecules. Moreover, the p38 protein of the MAPK family has been shown to modulate NF-κB activation [9,57]. The inhibition of H 2O2-induced phosporylation of MAPKs proteins may result in the prevention of downstream events such as activation of NF-κB [44].... Oxidative stresses induced by reactive oxygen species (ROS) have been shown to be involved in several physiological and pathophysiological processes, such as cell proliferation and differentiation. Steroid hormones can protect cells against apoptosis or induce cell proliferation by several mechanisms. Among androgenic hormones, dihydrotestosterone (DHT) is generated by a 5a- reduction of testosterone. Unlike testosterone, DHT cannot be aromatized to estradiol, therefore DHT is considered a pure...