• Title/Summary/Keyword: RI

Search Result 7,086, Processing Time 0.035 seconds

A Study on the Biological Estimation of Water Pollution Levels by the Aquatic Insects in Kyungan Stream, Kyunggi-Do (경안천수계에 있어서 수서곤충에 의한 생물학적 수질평가)

  • 배경석;이상수;신도철;이용진;김진곤;오수경
    • Journal of Environmental Health Sciences
    • /
    • v.16 no.2
    • /
    • pp.63-74
    • /
    • 1990
  • The present study was accomplished from March to August, 1990 in order to examine the community structure of aquatic insects and the biological estimation of water pollution levels by the aquatic inseets of Kyungan stream in Kyunggi-do. 1. The aquatic inseets of whole area composed of 78 species, 42 genera, 26 families in 8 roders. 2. The occurrence species number show highest at Gungpyung-ri(29 species) and lowest at Yongin town(1 species) 3. Dominance indices show lowest at Gungpyung-ri(0.35) and highest at Yongin town(1.00) and Choboo-ri(1.00) 4. Species diversity indices show highest at Gungpyung-ri(3.53) and lowest at Yongin town(0.00) 5. The biological estimation of each area's water quality levels based on the diversity index are as follows. Oligosaprobic area : Gungpyung-ri, Muchu-ri $\alpha$ mesosaprobic area : Yooeun-ri, Choboo-ri(K4), upper site of Wangsanri, Yeuk-ri, Wangsan-ri. $\beta$ mesosaprobic area Gonjiam-ri, Dopyoung-ri, Kyungan-ri, Wondang-ri. Polysaprobic area : Yongin town, Choboo-ri(K5)

  • PDF

Effect of anesthetics and diuretics on Doppler measurements of intrarenal resistive index in dogs

  • Choi, Ho-jung;Yoon, Jung-hee;Eom, Ki-dong;Lee, Hee-chon;Choi, Ji-hye;Sung, Jae-ki
    • Korean Journal of Veterinary Research
    • /
    • v.39 no.4
    • /
    • pp.832-837
    • /
    • 1999
  • lntrarenal resistive index (RI) was determined in normal, sedated and diuretic kidneys. The mean RI values of normal dogs were $0.64{\pm}0.03$ without statistically significant difference between left and right kidney. Interrenal RI difference (${\Delta}RI$) was $0.03{\pm}0.01$. No significant relationship was found between mean intrarenal RI versus body weight. The mean intrarenal RI values after administration of acepromazine, xylazine, thiopental, and ketamine were $0.66{\pm}0.03$, $0.64{\pm}0.03$, $0.56{\pm}0.05$, and $0.50{\pm}0.05$, respectively. After administration of acepromazine or xylazine, a significant change of the RI was not found. But, a significant decrease of the RI following thiopental or ketamine administration could be observed as compared with the normal RI. The mean intrarenal RI values were $0.63{\pm}0.06$ and $0.62{\pm}0.04$ at 10 minutes and 30 minutes after injection of furosemide, respectively. No significant change of intrarenal RI was found after administration of furosemide. But, mannitol significantly decreased mean intrarenal RI to $0.57{\pm}0.02$ and $0.58{\pm}0.03$ at 30 minutes and 60 minutes, respectively. Based on the obtained results, values of 0.72 and 0.05 may be proposed as the reasonable upper limits of RI and ${\Delta}RI$ of normal average. Acepromazine or xylazine are recommended as anesthetics for renal diseases because they have less effect on the RI. Further study using mannitol injection to increase ${\Delta}RI$ may be suggested in unilateral urinary tract obstruction since mannitol more effectively changed mean RI than furosemide.

  • PDF

A Study of CHOK-DU-RI (족두리에 관한연구)

  • 홍나영
    • Journal of the Korean Society of Costume
    • /
    • v.43
    • /
    • pp.243-258
    • /
    • 1999
  • This is a study of CHOK-DU-RI(族頭里) a black crown-like headpiece worn by woman on formal occasion in Chosun Dynasty and has succeeded until now. CHOK-DU-RI was originated by BOKTAK worn by Mongolian noblewomen and inflowed to the last period of Koryo dynasty under occupation of Yuan. The documentary records of O-JU-YON-MUN-CHSNG-JON-SAN-KO( by Lee Kyu-kung CHUNG-JANG-KWAN-JON-SUH by Lee Tock-mu and KO-SA-TONG by choe Nam-sun verify CHOK-DU-RI is a custom of mongolian fusion that was affected by KO-KO of Yuan and was formed. Ko-Ko is the same as BOKTAK. It is assumed KO-KO is a borrowed name as its transcription varies. The name was given according to its appearance which is certified by the record CHANGCHUN-CHIN-IN-SEO-BANG-YU-RAM-KI. It says that it can be simply named KO-KO as its edge is alike ad goose or a duck. In addition KO-Ko was called CHOGTAI in case of being added a camel fur that is JUGDUR. CHOGTAI similarily pronounced with CHOK-DU-RI which of being added a camel fur that is JUGDUR, CHOGTAI similarily pronounced with CHOK-DU-RI which provd CHOK-DU-RI was originated in Mongol. The shape of BOKTAK is very high and wided toward the top with the top with the angle getting more pointed and a feather stuck on the side. But its height got lower and its size smaller as it did gradually Koreanized to a CHOK-DU-RI. The use of CHOK-DU-RI has been settled since the last period of Chosun Dynasty. It came to stay as a popular custom when King Young-jo and Jong-jo wanting to do away with the corrupt practice of KA-CHE encouraged women at that time to do their hairs with CHOK-DU-RI instead of KA-CHE. It is as follows the classification of CHOK-DU-RI. First classified by a use group is divided into ceremonial use such as the seven treasures CHOK-DU-RI and jeweled CHOK-DU-RI. Hereby it is assumed that CHOK-DU-RI was used regardless of fortune. Secondly it varies by its type of frame. There are SOM CHOK-DU-RI OHT CHOK-DU-RI and O-YOM CHOK-DU-RI a kind of SOM CHOK-DU-Ri formed a base of O-YOM-MO-RI. The third group by jeweling has WHE-BONG CHOK-DU-RI and TA-BONG-CHOK-DU-RI JEwele CHOk-DU-RI can be still seen being commercially lent and worn by the brides at nuptical ceremonies performed in tradition of fashion and when worn bya bride as she gives her parents to her parents-in-law.

  • PDF

Establishment of Model for the Human Resource Development in RI-Biomics Field (RI-Biomics 분야 인력양성 모델 정립)

  • Yeom, Yu-sun;Shin, Woo-Ho;Hwang, Young-Muk;Park, Tai-Jin;Park, Sang-Hyun
    • Journal of Radiation Industry
    • /
    • v.7 no.2_3
    • /
    • pp.209-219
    • /
    • 2013
  • RI-Biomics field comes into the limelight as a new fusion radiation technology. These rapid development of RI-Biomics cause the necessity of establishment of a new methodical education program model for consistent training of professional manpower in RI-ADME, Biomics field. But domestic current status is not satisfied to training human resource development in RI-Biomics. Actually domestic educational organization related to RI-Biomics just run educational programs oriented basic theory, so practical and fusion education are not existed nowadays for preliminary RI-Biomics expert. Therefore we established a new education program model for educate of the expert in RI-Biomics field to overcome current problem about the route of knowledge that has more monotonous and concentrated tendency and non-professional education. To improve universality and practicality, we conduct education-training model survey about domestic and foreign country. This new human resource development model will contribute to fostering new expert in RI-Biomics field.

A Study on Embankment Compaction Control System Using RI Gauge(II) Focuses on the Modification due to Gravel Content (RI계기를 이용한 성토시공 관리기법연구(II) -조립토함유율에 따른 보정)

  • 나경준;정두영
    • Geotechnical Engineering
    • /
    • v.10 no.2
    • /
    • pp.97-108
    • /
    • 1994
  • A new RI calibration curve acquired from the laboratory tests on typical embankment materials is found to be adequate for testing subgrade materials in Korea but may not be suitable for testing materials containing gravels. Therefore this study aims for the modification of RI values that enables the usage of RI to all kinds of roadbed materials. Also other factors available for the criteria of compaction control such as air void ratio and degree of saturation were reviewed for their applicability.

  • PDF

A Study on Embankment Compaction Control System using RI Gauge (I) -Focuses on the Inspection and Calibration of Radio-Isotope Density/Moisture Gauges- (RI계기를 이용한 성토시공 관리기법 연구 (I) -RI계기의 검증실험 및 교정식 작성-)

  • Koo, Bon Hyo;Na, Kyung Joon;Lee, Jin Hoo;Hong, Sung Wan
    • KSCE Journal of Civil and Environmental Engineering Research
    • /
    • v.14 no.1
    • /
    • pp.203-216
    • /
    • 1994
  • The laboratory methods for compaction of soil (KSF 2312) and for moisture of soil (KSF 2306) in combination with the soil density in place by the sand-cone method (KSF 2311) are generally used for compaction control of soils. However, these methods have limitations in number of test and in accuracy. ]n addition, they are time-consuming. Therefore, they are not adequate for speedy control of embankment compaction in a project with huge amount of earthwork. The RI (Radioisotope) gauges for measurement of soil density and/or of soil moisture are widely used for the compaction control of soils in many countries. But in Korea, they have had a limited usage and available informations for uses of RI gauges are insufficient. Therefore, this study promotes efficient and safe use of RI gauges in geotechnical engineering. In this paper, fundamental aspects such as the priciples of RI gauges, gauge inspection techniques and the applicability and limitations of RI gauges for field usage were reviewed. And a new calibration curves suitable for the Korean soils were suggested.

  • PDF

Transition of Archival Description from ISAD(G) to Record in Context Conceptual Model (ISAD(G)에서 RiC-CM으로의 전환에 관한 연구)

  • Park, Zi-young
    • Journal of Korean Society of Archives and Records Management
    • /
    • v.17 no.1
    • /
    • pp.93-115
    • /
    • 2017
  • In this study, the RiC-CM (Records in Context-Conceptual Model) draft of the International Council on Archives Expert Group on Archival Description (ICA EGAD) was analyzed, mapped with the descriptive elements of ISAD(G), and the archival description of the record group based on RiC-CM was piloted. This was done to identify trends in the archival descriptive standards and to derive considerations in relation to improving existing descriptive standards. The mapping types of RiC-CM and ISAD(G) include inter-attribute mapping, attribute-entity mapping, and attribute-relation mapping. In addition to the mapping between descriptive elements, a frame for the archival information that can construct a record through the objects, attributes, and relationships of RiC-CM is constructed using the protege, and the example data is inputted for trial. As a result, it was possible to express most of the existing descriptive information of ISAD(G) through RiC-CM. In addition, in RiC-CM, the recording descriptive information is classified in detail, and the characteristic of browsing the relation between individual objects is enhanced.

Inhibitory Effects of Acanthopanax chiisanensis Ethanolic Extracts on FcεRI α Chain Expression (지리 오갈피의 FcεRI α chain 발현 저해 효과)

  • Shim, Sun-Yup;Sung, Chan-Ki;Lee, Sang-Won;Choi, Young-Ju;Kim, Hyeung-Rak;Byun, Dae-Seok
    • Journal of Life Science
    • /
    • v.17 no.11
    • /
    • pp.1511-1516
    • /
    • 2007
  • Basophils and mast cells play an important role in $Fc{\varepsilon}RI-mediated$ allergic reaction as effector cells. We studied the effects of Acanthopanax chiisanensis on $Fc{\varepsilon}RI\;{\alpha}$ chain expression in human basophilic KU812F cells. Ethanol extracts from root and stem of A. chiisanensis were tested for inhibitory effects of $Fc{\varepsilon}RI\;{\alpha}$ chain expression. The cell surface $Fc{\varepsilon}RI\;{\alpha}$ chain expression was examined by flow cytometric analysis. All of the extracts of A. chiisanensis reduced the cell surface $Fc{\varepsilon}RI\;{\alpha}$ chain expression. Furthermore, A. chiisanensis extracts caused a decrease in the level of $Fc{\varepsilon}RI\;{\alpha}$ chain mRNA level and $Fc{\varepsilon}RI-mediated$ histamine release. These results suggest that root and stem extracts of A. chiisanensis play an important role in anti-allergic activity via down-regulation of $Fc{\varepsilon}RI\;{\alpha}$ chain expression and decrease in release of inflammatory mediator such as histamine.

Application of Risk-Informed Methods to In-Service Piping Inspection in Framatome Type Nuclear Power Plants (프라마톰형 원전의 배관 가동중검사에 리스크 정보를 활용한 기법 적용)

  • Kim, Jin-Hoi;Lee, Jeong-Seok;Yun, Eun-Sub
    • Journal of the Korean Society for Nondestructive Testing
    • /
    • v.34 no.4
    • /
    • pp.311-317
    • /
    • 2014
  • The Pressurized water reactor owners group (PWROG) developed and applied a risk-informed in-service inspection (RI-ISI) program, as an alternative to the existing ASME Section XI' sampling inspection method. The RI-ISI programs enhance overall safety by focusing inspections of piping at high safety significance (HSS) locations where failure mechanisms are likely to be present. Additionally, the RI-ISI program can reduce nondestructive evaluation (NDE) exams, man-rem exposure for inspectors, and inspection time, among other benefits. The RI-ISI method of in-service piping inspection was applied to 3 units (KSNPs: Korea standard nuclear power plants) and is being deployed to the other units. In this paper, the results of RI-ISI for a Framatome type (France CPI) nuclear power plant are presented. It was concluded that application of RI-ISI to the plant could enhance and maintain plant safety, as well as provide the benefits of greater reliability.

Inhibitory Effects of Chrysanthemum zawadsaki Ethanolic Extract on $Fc{\varepsilon}RI$ ${\alpha}$ Chain Expression (구절초 에탄올 추출물의 $Fc{\varepsilon}RI$ ${\alpha}$ chain 발현 저해효과)

  • Shim, Sun-Yup;Byun, Dae-Seok
    • Korean Journal of Food Science and Technology
    • /
    • v.43 no.2
    • /
    • pp.220-223
    • /
    • 2011
  • Human basophilic KU812F cells express a high affinity for IgE receptor, $Fc{\varepsilon}RI$, which plays an important role in immunoglobulin E (IgE)-mediated allergic reactions. Using the human basophilic KU812F cells, we assessed the inhibitory effects of the ethanolic extract from Chrysanthemum zawadsaki(CZ) on $Fc{\varepsilon}RI$ ${\alpha}$ chain expression. Flow cytometric analysis showed that cell surface $Fc{\varepsilon}RI$ ${\alpha}$ chain expression was suppressed when the cells were cultured with CZ extract. RT-PCR analysis showed that the mRNAs for $Fc{\varepsilon}RI$ ${\alpha}$ chain decreased by the treatment of CZ extract. Moreover, CZ extract was also observed to result in a reduction in the release of histamine from anti-$Fc{\varepsilon}RI$ antibody (CRA-1)-stimulated cells. These results suggest that CZ extract may exert anti-allergic activity through down-regulation of $Fc{\varepsilon}RI$ ${\alpha}$ chain expression and a subsequent decrease in histamine release.