• Korean Journal of Microbiology
• /
• v.35 no.3
• /
• pp.242-247
• /
• 1999

This sludy was conducted to investigate the change of bacterial co~munities with season and depth in Lake Soyang. Korea, using fluorescence in situ hybridization (FISH). The oligonucleotide probes used in this study were EUB338, ALF I b. GAM42a, and CF, The percentage of h e Proleobacteria a $\alpha$-group ranged from 0.70 to 33% the $\beta$-group from 1.0 to 26% they -group from 2.4 Lo 37% and Cytophagn and Flavobactefin groups from 4.7 to 24% duing the study period (April Lo November, 1998). They $\gamma$-group was dominant in spring when Asterionella was dominant. and a $\alpha$-group was dominant in summer when the organic content was low and Dinobryon was dominant. However, a specific group was not dominant in ？dl when cyanobacteria group was dominant and the ratio of eubacleria to total bacteria was very low. Therefore, the bacterial communities in Lake Soyang changed with season and depth, which seems to be associated with the telnporal succession of phytoplanlaons.

• Journal of Korean Society on Water Environment
• /
• v.33 no.3
• /
• pp.282-290
• /
• 2017

A long-term resuspension of small particles, called persistent turbidity, is one of the most important water quality concerns in the dam reservoirs system located in North Han River. Persistent turbidity may incur aesthetic nuisance and harmful effect on the ecosystem health, in addition to elevated water treatment costs for the drinking water supply to the Seoul metropolitan area. These sufferings have been more intensified as the strength and frequency of rainfall events increase by climate change in the basin. This study was to analyze the effect of an extreme turbidity flow event that occurred in 2006 on the serial reservoirs system (Soyang-Uiam-Cheongpyung-Paldang) in North Han River. The CE-QUAL-W2 model was set up and calibrated for the river and reservoirs system using the field data obtained in 2006 and 2007. The results showed that Soyang Reservoir released turbid water, which was classified as the TSS concentration is greater than 25 mg/L, for 334 days with peak TSS of 264.1 mg/L after the extreme flood event (592.7 mm) occurred between July 10 and 18 of 2006. The turbid water departed from Soyang Reservoir reached at the most downstream Paldang Reservoir after about 20 days and sustained for 41 days, which was validated with water treatment plant data. Since the released water from Soyang Reservoir had low water temperature and high TSS, an underflow formed in the downstream reservoirs and vertically mixed at Paldang Reservoir due to dilution by the sufficient inflow from South Han River.

• Korean Journal of Ichthyology
• /
• v.29 no.2
• /
• pp.124-129
• /
• 2017

The feeding habits of the Siniperca scherzeri were studied using 332 specimens collected by trammel net in the Soyang Lake of Han River, from April to November 2014. Of 332 specimens, 197 contained food and 135 were empty. The standard length of individuals used in this study ranged from 107 to 321 mm. Mandarin fish mainly consumed fishes and shrimps. The main food items of fishes and shrimps were Hypomesus nipponensis and Macrobrachium nipponense. The proportion of fishes in prey items increased with increasing mandarin fish length, however shrimps decreased with growth. The seasonal difference were apparent, fishes were taken mainly all the seasons except June, July and October. There were higher rates of fishes for food items in downstream areas than in the upper and middle areas of the Soyang Lake.

• Journal of Korean Medicine Rehabilitation
• /
• v.15 no.1
• /
• pp.1-8
• /
• 2005

Objectives : This dissertation is to study the relationship between Scoliosis and Sasang Constitution. Methods : The researcher discriminated the Sasang constitutions of those observed - the out-patients - who were treated from January to June 2004, and showed, through whole spine X-ray, over 10 degrees in Cobb's angle. The result coming out from this study was compared firstly with the existing Sasang constitution theory from 《Dongyi Suse Bowon》 《東醫壽世保元》 and secondly with the existing of QSCCII statistics. The statistics were taken as Goodness-of-fit test, T-test, and ANOVA test. Results : 1. Of those 29 observed, 4(13.79%) were categorized in Taeum-in, 14(48.28%) in Soyang-in, and 11(37.93%)in Soum-in. 2. The result showed a significant difference with the Sasang constitution from Dong-isusebowon. 3. The result showed a difference with the existing from QSCCII. 4. There of no significant relations between each constitutions and Scoliosis. 5. There no significant relations between distinction and Scoliosis. Conclusions : In this study, rate of Soyang-in, among patients diagnosed scoliosis, was the higher.

• Water for future
• /
• v.6 no.1
• /
• pp.76-86
• /
• 1973

• Journal of the Korean Geophysical Society
• /
• v.9 no.4
• /
• pp.343-349
• /
• 2006

In order to study unconsolidated sediments upstream of the Soyang Dam, seismic refraction data were recorded along five profiles of 94 m length. Receiver interval and record length were 2 m and 204 ms, respectively. Recorded data were analyzed using the traveltime tomography and delay-time methods in order to reveal sediment distribution in the investigation site. The acoustic basements are buried at approximately 14 m deep and their thickness shallows to southeast approaching to a hill. On the basement, pre-existing sediments deposited before construction of the Soyang dam lies. This sedimentary layer is composed of paleo-soil and sandy sediments. Above this layer, recent sediments comprise the top layer which is believed to have been deposited since the formation of the dam. Average thickness of this uppermost layer is approximately 1.6 m, which is much thicker than in the downstream.

• 한국지구물리탐사학회:학술대회논문집
• /
• 2006.06a
• /
• pp.285-290
• /
• 2006

To access the volume of sediments deposited after construction of the Soyang Dan and to understand their distribution in the Soyang lake, acoustic profiling using a 10-20 kHz system was conducted along profiles of 227 km length. Profile intervals are approximately 50 and 500 m for longitudinal and cross lines, respectively. The data were gain-controlled and then migrated using the f-k algorithm. After digitization of boundaries of the sediments, the acoustic interpretation was verified through correlating with 38 core samples. Thickness of the sediments averages 0.25 m and reaches to 8.25 m at maximum. Estimated total volume of the sediments based on anisotropic models in geostatistical methods is approximately $5.9{\times}10^6\;m^3$, which is more than twice greater than the earlier estimation based on an isotropic model.

• Korean Journal of Microbiology
• /
• v.30 no.2
• /
• pp.129-133
• /
• 1992

Zooplankton feeding was investigated with epilluorescence microscope in Lake Soyang in August 1991. Zooplankton. which ingested fluorescence bead or fluorescently labeled bacteria (FLB). was regarded as bacterivore. The algavores wert. easily distinguished with autofluorescence of chlorophyll in gut. Copepoda nauplius and Copepodids. 7'hermocyclop.s spp, Pleosomcl spp. Brachionus spp were algavores. and DuphnB hpp. Bosmincr spp. Kerutrlla spp and Hrxuthru spp werc identified as bacterivc~res.T he mixo\ory was not detected. The percentages of algavores and bacterivores in Lake Hoyang were 65 7% and 34.3%. respectively. The bacterivorous zooplankton had trend to ingcst the beads bigger than 0.5 pm. Use of 0.5 pm bead as grazing tracer gave similar estin~ates of ingestion to FLR.

• Journal of Species Research
• /
• v.6 no.2
• /
• pp.163-170
• /
• 2017

As a part of the research program 'Survey of freshwater organisms and specimen collection', freshwater samples were collected from Lakes Soyang and Chungju in 2016. Hundreds of bacterial strains were isolated from the samples and were identified based on 16S rRNA gene sequences. Among the bacterial isolates, strains showing higher than 98.7% sequence similarity with validly published bacterial species not reported in Korea were selected as unrecorded bacterial species. Based on 16S rRNA gene sequence similarity, 17 strains were identified as unrecorded bacterial species in Korea. The 17 bacterial strains were phylogenetically diverse and belonged to four phyla, seven classes, 13 orders, 14 families, and 16 genera. At generic level, the unreported species were affiliated with Caulobacter, Paracoccus, and Mesorhizobium of the class Alphaproteobacteria, Deefgea, Undibacterium, Chitinimonas, Inhella, and Sphaerotilus of the class Betaproteobacteria, Vibrio and Cellvibrio of the class Gammaproteobacteria, Sanguibacter and Clavibacter of the phylum Actinobacteria, Lactococcus of the phylum Firmicutes, Deinococcus of the class Deinococci, and Chryseobacterium and Flavobacterium of the phylum Bacteroidetes. The unreported species were further characterized by examining Gram reaction, colony and cell morphology, biochemical properties, and phylogenetic position. The detailed description of the 17 unreported species are also provided.

• Journal of Sasang Constitutional Medicine
• /
• v.14 no.3
• /
• pp.74-84
• /
• 2002

The purpose of study is 584 patients who had been treated in the Oriental Medical Hospital at Dong Eui Medical Center during 1 year from February 2001 to January 2002. We proceeded the judgment of Sasang constitution by 'Questiinaire of Sasang Constitution Classification(I)' and 'Questiinaire of Sasang Constitution Classification II(QSCCII)'. The following conclusion were made in comparison with Sasang Constitution and Questiinaire about disease and style of symptoms. 1. The subject of 'increase of the weight of a body(gain weight), cough, nasal discharge(rhinorrhea), stuffed nose, sweatier, more like fat food, more like salty food', has significant differences in sasang constitution classification. The frequency of Taeum group is more than of Soeum group and Soyang group. 2. The subject of 'the complextion is bad, anorexia, indigestion, nervousness, sonitus', has significant differences in sasang constitution classification. The frequency of Soeum group is more than of Taeum group and Soyang group. 3. The subject of 'urodynia, otic discharge', has significant differences in sasang constitution classification. The frequency of Soyang group is more than of Taeum group and Soeum group.