• Title, Summary, Keyword: ISE

Search Result 249, Processing Time 0.096 seconds

Understanding Imminent & Substantial Endangerment (ISE) in the U.S. Environmental Laws and Analysis on ISE Uses (미국 환경법의 Imminent & Substantial Endangerment에 대한 이해 및 사례별 분석)

  • Jeong, Seung-Woo
    • Journal of Soil and Groundwater Environment
    • /
    • v.14 no.3
    • /
    • pp.14-21
    • /
    • 2009
  • This study discusses the definition, determination and use of Imminent & Substantial Endangerment (ISE) included in the United States environmental laws. ISE is a contamination situation and statutory authority that state and federal governments issue an administrative order to responsible parties for clean-up. ISE is appeared in all kinds of official government documents such as administrative oders on consent, judicial consent degrees, and unilateral administrative order. In order to invoke ISE authority, the governments should have evidence of each of the following elements; 1) a possible ISE 2) because of actual or threatened release 3) of a hazardous substance 4) from a facility. The determination of ISE relies on detail scientific evidence and documentation in order to demonstrate the existence of conditions that may present an ISE. However, any official protocol or procedure has not been found for determining an ISE, although an ISE order documentation format is suggested by U.S. EPA.

Comparison Study of AAS and ISE Method in the Lithium Analysis of Serum and Urine (혈액 및 소변의 Lithium치 측정에 있어서 AAS법과 ISE법의 비교)

  • Lee, Soo-In;Lee, Chae-Hoon;Kim, Kyung-Dong;Kim, Chung-Sook
    • Yeungnam University Journal of Medicine
    • /
    • v.10 no.2
    • /
    • pp.409-416
    • /
    • 1993
  • In the method for lithium (Li) analysis, flame emission photometry and atomic absorption spectrophotometry (AAS) have been used most frequently. In addition, lithium can be analyzed by ion-selective electrode (ISE) or fluorscence polarization immunoassay. We evaluated the comparison between AAS method based on the principle of absorption of light at 670.8 nm by Li and ISE method based on the principle of voltage difference generated by Li in contact with lithium ionophore. We compared with those obtained by AAS (AA/AE Spectrophotometer 551, Instrumentation Laboratory Co.) and ISE(CSYNCHRON EL-ISE, Beckman Co.) in the serum and urine of 6 patients and evaluated time-related changes of serum lithium concentration after dosing in both methods. The results are summarized as follows : 1. In within-run precision study for lithium concentration, coefficient variations (CVs, %) ranged from 1.34 to 2.17 for AAS and from 0.34 to 0.85 for ISE method. In between-run precision study for lithium concentration, CVs ranged from 1.23 to 1.72 for AAS and from 0.61 to 1.38 for ISE method. 2. The correlation study between AAS and ISE method resulted in Y=0.946X+0.137 (N=32, r=0.933, X=AAS, Y=ISE) for serum lithium and Y=1.092X+0.977 (N=28, r=0.943, X=AAS, Y=ISE) for urine lithium. 3. Time-related changes of serum lithium concentration in both AAS and ISE method resulted in peak serum levels about 2 hours after dosing and then rapidly decreased after the peak serum level and finally arrived at nearly initial levels about 9 hours after dosing. 4. The reference range of serum lithium was found as undetectable level for both AAS and ISE method and the reference range of urine lithium to the urine creatinine was 0-0.00014 mmol/mg(mean 0.00002 mmol/mg) for AAS method.

  • PDF

Performance Investigation of Insulated Shallow Extension Silicon On Nothing (ISE-SON) MOSFET for Low Volatge Digital Applications

  • Kumari, Vandana;Saxena, Manoj;Gupta, R.S.;Gupta, Mridula
    • JSTS:Journal of Semiconductor Technology and Science
    • /
    • v.13 no.6
    • /
    • pp.622-634
    • /
    • 2013
  • The circuit level implementation of nanoscale Insulated Shallow Extension Silicon On Nothing (ISE-SON) MOSFET has been investigated and compared with the other conventional devices i.e. Insulated Shallow Extension (ISE) and Silicon On Nothing (SON) using the ATLAS 3D device simulator. It can be observed that ISE-SON based inverter shows better performance in terms of Voltage Transfer Characteristics, noise margin, switching current, inverter gain and propagation delay. The reliability issues of the various devices in terms of supply voltage, temperature and channel length variation has also been studied in the present work. Logic circuits (such as NAND and NOR gate) and ring oscillator are also implemented using different architectures to illustrate the capabilities of ISE-SON architecture for high speed logic circuits as compared to other devices. Results also illustrates that ISE-SON is much more temperature resistant than SON and ISE MOSFET. Hence, ISE-SON enables more aggressive device scaling for low-voltage applications.

Preparation and Clinical Application of pH-ISE(Ion Selective Electrode) Based on Tribenzylamine Ionophore (Tribenzylamine Ionophore를 이용한 pH-ISE의 제조 및 임상응용)

  • Cho, Dong-Hoe;Park, Chung-Oh
    • Korean Journal of Clinical Laboratory Science
    • /
    • v.38 no.1
    • /
    • pp.59-64
    • /
    • 2006
  • The pH-ISE(ion selective electrode) based on tribenzylamine as a hydrogen ion carrier was prepared and its electrochemical characterization was studied. It responded linearly to hydrogen ions in the range of pH 3.1 - pH 11.0 and the Nernstian slope showed 55.0 mV/pH (at $20{\pm}0.2^{\circ}C$), it also showed a fast response time of 8 sec. When it was directly applied to human blood(pH 6.0-8.5), we could get the same satisfying results. A good reproducibility and stability were shown with the precision of 2 mV (${\pm}0.1$). The pH-ISE based on tribenzylamine exhibited biocompatibility in clinical applications.

  • PDF

Architectural Model of Integrated Simulation Environment for the M&S Based Design of Unmanned Ground Combat Vehicle (M&S기반 무인지상전투차량 설계를 위한 통합모의실험환경 아키텍처모델)

  • Choi, Sang Yeong;Park, Jin Ho;Park, Kang
    • Korean Journal of Computational Design and Engineering
    • /
    • v.20 no.3
    • /
    • pp.221-229
    • /
    • 2015
  • M&S (Modeling & Simulation) based design is widely accepted for the development of the future weapon system with better performance in a cheaper and faster way. Integrated simulation environment (ISE) is needed for the M&S based design. On the ISE, system engineers can not only verify design options but also validate system requirements. In this paper, we propose architectural models of the integrated simulation environment (ISE) which incorporates mission effectiveness M&S (Modeling & Simulation), system performance M&S, the optimization model of integrated performances, digital mockup and virtual prototype. The ISE architectural models may be used to implement the ISE for the development of the future unmanned ground combat vehicle.

Comparison on commercial simulators for nano-structure device simulation- For ISE-TCAD and Micro-tec - (나노 구조 소자 시뮬레이션을 위한 상용 시뮬레이터의 비교 분석 - ISE-TCAD와 Micro-tec을 중심으로 -)

  • 심성택;임규성;정학기
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.6 no.1
    • /
    • pp.103-108
    • /
    • 2002
  • The metal-oxide-semiconductor field-effect transistor(MOSFET) has undergone many changes in the last decade In response to the constant demand for increased speed, decreased power, and increased packing density. The state -of-the-art simulation programs are developed by engineers and scientists. This paper has compared commercial programs of Micro-tec and ISE-TCAD in device simulation. This paper investigates LDD MOSFET using two simulators. Bias condition is applied to the devices with gate lengths(Lg) 180㎚. We have presented MOSFET's characteristics such as I-V characteristic and electric field, and compared Micro-tec with ISE TCAD.

A Study on Development of an Algorithm for Vertex Creation to Define Ship Hull Forms (선체형상 정의를 위한 버텍스 산출 알고리즘 개발에 관한 연구)

  • Hyun-Kyoung Shin;Sang-Sung Shin;Kyu-Won Park
    • Journal of the Society of Naval Architects of Korea
    • /
    • v.31 no.3
    • /
    • pp.31-37
    • /
    • 1994
  • When a lot of input data are not distributed uniformly n a chord-span direction or when the given shape is complicated, it is very difficult to obtain an inverse matrix which represents the smooth Bi-cubic B-spline surface of the initial shape. To overcome this problem, we suggest image Surface Expansion Method(ISE Method) which is suggested for vertex creation of B-spline curves and surfaces. Its basic concept, convergency and verification are shown. Also B-spline curves and Surfaces represented by ISE Method were compared with those represented by the existing method which is based on the inverse matrix method, the pseudoinverse matrix method and the chord length approximation method for vertex yielding. Ship Hull Forms which have Knuckle, Bulbous Bow, Transom and Stern frame were represented by the ISE Method.

  • PDF

Anti-hyperlipidemic Effect of Insamsansa-eum in Mice

  • Jung, Sang-Hyun;Ko, Chang-Nam;Bae, Hyung-Sup;Kim, Young-Suk;Cho, Ki-Ho;Min, Sung-Won;Kim, Dong-Hyun
    • Natural Product Sciences
    • /
    • v.14 no.4
    • /
    • pp.215-220
    • /
    • 2008
  • Hypolipidemic effect of Insamsansa-eum (ISE, Ren-Shen-Shan-Zah-Yin in Chinese) consisted of Red ginseng (RG; the steamed root of Panax ginseng C.A. Meyer) and Crataegii fructus (CF, the fruit of Crataegus pinnatifida BGE) is used frequently in China and Korea as a herbal medicine to treat arteriosclerosis, was investigated. Treatment of ISE significantly reduced blood triglyceride (TG) and total cholesterol (TC) levels in Triton WR-1339-induced hyperlipidemic mice and serum TG levels in corn oil-induced hypertriglyceridemic mice. ISE significantly lowered the high blood TG and TC levels as well as body and epididymal mass weights in hyperlipidemic mice induced by long-term feeding of a high-fat diet and increased blood HDL cholesterol level. ISE and its ingredients, RG and CF, inhibited pancreatic lipase and HMG-CoA reductase activities. Of its ingredients, RG reduced the blood TC level and HMG-CoA reductase activity more than CF. CF reduced blood TG level and pancreatic lipase activity more than RG. These finding suggest that the antihyperlipidemic effect of ISE may be due to synergistic inhibition of HMG-CoA reductase and pancreatic lipase by RG and CF, and that ISE may be effective hypolipidemic agents.

Helieum-dilution Effect of Coflow Air on Self-excitation in Laminar Coflow Jet Flames (층류 동축류 제트에서 공기측 헬륨 희석이 화염진동에 미치는 영향)

  • Lee, Won June;Park, Jeong;Kwon, Oh Boong;Baek, Se Hyun;Ko, Sung Ho
    • Journal of the Korean Society of Combustion
    • /
    • v.17 no.4
    • /
    • pp.51-59
    • /
    • 2012
  • Experimental study in coflow jet flames has been conducted to investigate the helium-dilution effect of coflow air on self-excitation. For various helium mole fractions and jet velocities, two types of self-excitation were observed: buoyancy-driven self-excitation and Lewis-number-induced self-excitation(here after called Le-ISE) coupled with buoyancy-driven one. The difference between buoyancy-driven and Le-ISE is clarified by using the Mie-scattering visualization as well as exploring the different features. The mechanism of Le-ISE is proposed. When the system Damk$\ddot{o}$hler number was lowered, Le-ISE is shown to be launched. Le-ISE is closely related to heat loss, in that it can be launched in even methane jet flame (Lewis number less than unity) with helium-diluted coflow air. Particularly, Le-ISE becomes significant as the Damk$\ddot{o}$hler number decreases and heat-loss becomes significant.

The Cases of Integrated Science Education Practices in Schools -What are the ways to facilitate integrated science education?- (통합 과학교육을 실천하고 있는 두 중등학교의 사례 -무엇이 통합 과학교육을 가능하게 하는가?-)

  • Ahn, Jungyong;Na, Jiyeon;Song, Jinwoong
    • Journal of The Korean Association For Science Education
    • /
    • v.33 no.4
    • /
    • pp.763-777
    • /
    • 2013
  • This is a case study on two schools practising integrated science education (hereafter ISE). The purposes of this study are to investigate the types and features of ISE in the schools actively practising ISE, to identify the contextual factors of the schools, and to give implications for implementing ISE in schools. This study investigated the contextual factors in practicing ISE with a focus on the two schools, a middle school in Gyeonggi-do and a high school in Busan. They were breaking down the boundaries among teaching subjects and providing student-oriented instruction with problems in the real world. The data were collected by observing classes, by interviewing teachers, and by reviewing school documents and students' reports. The research findings are as follows: first, the two schools took part in ISE actively. They teach science to students providing integrated experiences mainly by using interdisciplinary knowledge and/or by solving the problems pertaining to the real world. While the former integrated subjects centering on topics, the latter focused on a project-based learning driven by students. They have differences in regard to the role of teachers and students, the level of integration and the type of integration. Second, the contextual factors that enabled ISE to be implemented there were found. The previous studies revealed six contextual factors in practising ISE: small and stable learning environment, leadership, team activities, in-school planning time, flexible timetable and community links. This study also found similar factors. However, the cases of this study provided ISE on a large scale and in a short period of time, instead of a small and stable learning environment. Teachers viewed the process of ISE not only as a tool to overcome the conservative culture of teachers but also as a pursuit of innovation.