• Title/Summary/Keyword: Soyang

Search Result 408, Processing Time 0.038 seconds

Quantitative Analysis of Microcystins, Cyanobacterial Toxins in Soyang Lake (소양호에서 남조류 독소, 마이크로시틴의 정량 분석)

  • Lee, Jeong Ae;Lee, So Yeong;Pyo, Dong Jin
    • Journal of the Korean Chemical Society
    • /
    • v.46 no.6
    • /
    • pp.535-540
    • /
    • 2002
  • It is very difficult to analyze the microcystins, cyanobacterial toxins quantitatively since it exists in a trace level in lakes. In this paper, two different analytical methods were tried to analyze the microcystins, cyanobacterial toxins quantitatively in water samples collected in Soyang lake. The first method was solid phase extraction method fol-lowed by High Performance Liquid Chromatography(HPLC), and the second method was Enzyme-Linked Immu-nosorbent Assay(ELISA) using the monoclonal antibody of microcystin.

Identification of Autumn Phytoplankton in the Lakes of Han River system (한강수계 호수에 출현하는 가을철 식물플랑크톤의 생태적 현황 연구)

  • Kim, Yoon-Jung;Kim, Min-Kyung;Lee, Sang-Don
    • Journal of Wetlands Research
    • /
    • v.14 no.3
    • /
    • pp.429-438
    • /
    • 2012
  • Han River is very important as a source of drinking water in metropolitan area. This study was conducted to figure out diversity and dynamics of plankton community in the seven lakes (lakes Paro, Chunchon, Soyang, Uiam, Chungpyung, Paldang, Chungju) of Han Riversystem. A total of 76 genera and 121 species were investigated by taxonomic identification in November 2008. Cyclotella sp. and Microcystis sp. was a dominant species in lake Paro and Chungju respectively. Aulacoseira granulata was dominant in lakes Chunchon, Paldang and Chungpyung. And Fragilalia crotonesis was a dominant species in lake Soyang and Uiam. Our results can be useful when compared to the results using molecular biological method to supplement taxonomic identification.

Estimation of Atmospheric Mercury Wet-deposition to Lake So-yang (대기 중 수은의 습식 침적 평가: 소양호를 중심으로)

  • Ahn, Myung-Chan;Han, Young-Ji
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.24 no.6
    • /
    • pp.693-703
    • /
    • 2008
  • The important source of the mercury in water-column is the influx of atmosphere mercury, via dry and wet deposition. In this study, wet deposition of mercury was estimated to be $14.56{\mu}g/m^2$ during 15 months at the Lake Soyang, which is a little higher than those observed in the several rural US Mercury Deposition Network (MDN) sites with similar precipitation depth. The mercury concentration in precipitation did not show a positive correlation with atmospheric RGM (reactive gaseous mercury) concentration, while maintaining good correlation with atmospheric $PM_{2.5}$ at Soyang Dam. This result suggests that the contribution of particulate Hg to the total Hg wet deposition should be more significant than that of RGM. In this study, both precipitation depth and precipitation type affected the amount of wet deposition and the concurrent mercury levels in precipitation. There was generally an inverse relationship between precipitation depth and Hg concentration in precipitation. Precipitation type was another factor that exerted controls on the Hg concentration in precipitation. As a result, the highest concentration of Hg was observed in snow, followed by in mixture (snow+rain) and in rain.

The Effects of Ratio of Inhalation and Exhalation and Posture on Heart Rate Variability according to Sasang Constitution (호흡 시 호기 및 흡기 비율과 자세가 체질별 심박변이도에 미치는 영향)

  • Kim, Ji-Hwan;Bae, Hyo-Sang;Park, Seong-Sik
    • Journal of Sasang Constitutional Medicine
    • /
    • v.28 no.1
    • /
    • pp.40-50
    • /
    • 2016
  • Objectives We observed what effects both ratio of inhalation and exhalation(I/E) and posture have on heart rate variability(HRV) according to Sasang Constitution(SC).Methods HRV of 73 healthy participants who filled in self-questionnaires was recorded while they carried out 0.1Hz paced breathing(PB) with sitting, usual breathing(UB) with standing, and 0.1Hz PB with standing. PB was conducted to 4:6 or 6:4 of I/E and UB with sitting was executed before and after each breathing. Finally, HRV indices were analyzed of 60 participants(Soeum: 24, Soyang: 18, Taeeum: 18).Results & Conclusions In both self-questionnaires and HRV indices, there are not statistically significant between SC about the posture and I/E. SOEUM preferred 4:6 of I/E and showed lower mean RR and SDNN. SOYANG preferred 6:4 of I/E and showed higher mean RR and lower mean heart rate. TAEUM did not prefer I/E and showed the highest SDNN.

Clinical Study about Acupuncture and Moxibustion Treatment according to the different type of the Meridian Pathways of the Patients who have Shoulder Pain (견비통 환자의 경락 유형별 침구 치료에 대한 임상적 고찰)

  • Lee Hee-Yoon;Kim Sang-Heon;Heo Jeong-Eun;Youn Hyoun-Min;Kim Won-Il
    • Korean Journal of Acupuncture
    • /
    • v.23 no.4
    • /
    • pp.67-84
    • /
    • 2006
  • Objectives : This clinical trial is to know how significant the acupuncture treatments are which were done on appropriate acupuncture-points with using method of classification by meridian pathways along the parts of the shoulder pain. Methods : 27 shoulder pain patients who participated in the clinical study in the Bukpyeoung haemalkeun oriental medical clinic which is located in Donghae city were classified 3 types(Yangmyeng, Soyang, Taeyang meridian type) according to their different parts of the shoulder pain. They have been acupunctured in their applied acupoints in the body 3 times a week for 4 weeks. Results : After 4 weeks of the treatments, there were statistically meaningful treatment effect in all index in Yangmyeng meridian type. In Soyang meridian type, there were statistically meaningful treatment effect in 'subjective symptom of shoulder pain','shoulder pain and disability index', 'visual analog scale'. In Taeyang meridian type, statistically effective treatment result was found in 'shoulder pain and disability index' Conclusions : Every type has statistically meaningful treatment effects according to the analysis of the results.

  • PDF

The comparative study between hyperlipidemia and disease of adult people, which belong to the people who came to Daejon Oriental hospital for the examination of C.V.A (중풍조기검진(中風早期檢診)을 통한 고지혈증(高脂血症)과 성인병(成人病)에 대한 비교연구(比較硏究))

  • Lee, Gi-Tae;Kim, Yun-Sik;Seol, In-Chan
    • Journal of Haehwa Medicine
    • /
    • v.11 no.1
    • /
    • pp.85-90
    • /
    • 2002
  • From June 1th to December 31th 2001, the study was carried out 285 person who came to the Daejon oriental hospital for the examination of CVA. The result was as follows : 1. Hyperlipidemia patient is 41%, 50's is the highest. 2. In the case of Hyperlipidemia patient, Taeyum type is 49%, Soyang type is 36% and Soyum type is 15%. but in the Control group Taeyum type is 36%, Soyang type is 44% and Soyum type is 20%. 3. In the case of Abnormal EKG, Hyperlipidemia group is 34%, Control group is 32%. 4. In the case of Liver disease, Hyperlipidemia group is 17%, Control group is 9%. 5. In the case of Diabet mellitus, Hyperlipidemia group is 30%, Control group is 7%. 6. In the case of Hypertension, Hyperlipidemia group is 50%, Control group is 42%.

  • PDF

Elemental Stoichiometry of Natural Phytoplankton Communities in Reservoirs of the Han River Systems (한강수계 주요 댐호의 식물플랑크톤 군집 세포내 화학양론)

  • Park, Hae-Kyung
    • Journal of Korean Society on Water Environment
    • /
    • v.30 no.6
    • /
    • pp.665-672
    • /
    • 2014
  • Elemental cellular stoichiometry of natural phytoplankton communities was examined in six large dam reservoirs in the Han River system. Carbon (C) and nitrogen (N) contents of the phytoplankton-dominated seston from Lake Soyang was higher than that from other lakes. Phosphorus (P) content showed slight variations among six lakes in the range of $0.04{\sim}0.18{\mu}mol$ P mg $DW^{-1}$. The phosphorus concentrations of lake water showed obvious positive relationship with P and C contents of the phytoplankton-dominated seston. In all six lakes, N:P ratios and C:P ratios in the phytoplankton-dominated seston were more than 23 and 133 respectively, indicating the phytoplankton communities in six lakes have been exposed in phosphorus limited condition. The relative abundance of diatoms showed significant negative correlation with C, N, P contents of the phytoplankton-dominated seston and that of cyanobacteria showed significant positive correlation. Elemental stoichiometry of diatoms-dominated seston showed distinctive less content than that of cyanobacteria-dominated seston. The cellular N:P ratios of diatoms- and cyanobacteria-dominated seston indicate that both main classes of phytoplankton in six lakes are in phosphorus deficiency. Elemental stoichiometry of the phytoplankton-dominated seston in this study could be used for the further ecological stoichiometric studies in six lakes.