• Title/Summary/Keyword: Standard Research

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A Study on Development of the Extreme Heat Standard in Korea (폭염발생 기준 설정에 관한 연구)

  • Park, Jong-Kil;Jung, Woo-Sik;Kim, Eun-Byul
    • Journal of Environmental Science International
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    • v.17 no.6
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    • pp.657-669
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    • 2008
  • Lately extreme weather event is occurring because of the global warming. Especially disaster due to the extreme heat are increasing but the definition and the standard of the extreme heat is obscure until now. So this study established the extreme heat standard by using the number of daily deaths. As a result, considering the climate of the megalopolis using daily maximum heat index and daily maximum temperature was the best for the standard of the extreme heat. And it showed that extreme heat lasted for 2 days affects the death toll the most. The regional incidence of the extreme heat is highest at August and July, September and June is following.

Investigation on the Farm Management and Livestock House Design Standard Perception to Enhance Usage of Livestock House Design Standard (축사표준설계도의 활용도를 높이기 위한 농가 운영 현황 및 축사표준설계도 인식 조사)

  • Kang, Sol-moe;Lee, In-bok;Hwang, Chang-kyu;Hwang, Soo-jin;Jeong, Deuk-young;Lee, Sang-yeon;Park, Se-jun;Choi, Young-bae;Kim, Da-in
    • Journal of The Korean Society of Agricultural Engineers
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    • v.64 no.6
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    • pp.87-99
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    • 2022
  • The meat consumption per person has continuously increased in recent years. However, the labor force in the domestic livestock industry has decreased due to the declining and ageing population. In order to increase productivity, the government have developed and distributed design standard of livestock houses. Presently, report showed that the adaptation rate of the developed livestock house design standard on the real farm was still low. Thus, this paper aimed to find ways to improve the utilization of the design standard through surveys. The survey was conducted on 650 farms across the country. Analysis of the result showed that in the poultry house, the unawareness of farmers to the design standard was found to be the biggest reason for not using the design standards. On the other hand, in the swine house, the previously built swine houses do not fit with the design standard. From these result, the following recommendations were suggested: 1) promotion and education are needed to enhance usage of design standard; 2) since it is impossible to make a design standard considering all the farm sites, it is important to consider the conditions of various farm site prior to enhancement of the design standard; 3) improvement factors such as reinforcing the ventilation design, reflecting animal welfare, preventing livestock diseases, and enhancing ICT devices can also be promoted.

Improvement on Sewerage Effluent Standard of Public Sewerage Treatment Plants (공공하수처리시설 수질기준 선진화 방안)

  • Yu, Soon-Ju;Park, Sang-Min;Kwon, Oh-Sang;Park, Su-Jeong;Yeom, Ick-Tae
    • Journal of Korean Society on Water Environment
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    • v.29 no.2
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    • pp.276-287
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    • 2013
  • Domestic sewage contains increasingly more pharmaceuticals and personal care products (PPCPs), due to rising use of medicines, health supplement food and daily necessities. And various types of industrial wastewater from pollution sources in treatment areas could flow into the public sewerage treatment plants (PSTPs) in metropolitan areas. The conventional PSTPs are designed to treat suspended solids, biodegradable organics, nitrogen and phosphorous from residential and industrial areas and public facilities. However, toxic, conventional, and non-coventional pollutants from non-domestic sources that discharge into sewer system as well as domestic source with various chemicals could not be treated in the conventional PSTPs and discharged untreated to public basin. In this paper we aim to consider the establishment system of effluent standard of PSTPs in comparison with water quality standard of water environment and wastewater discharge regulation. And also we suggest the necessity of regulations on the pretreatment of industrial wastewater as part of efforts to improve water quality in sewerage systems and to protect public basin.

Introduction to the standard reference data of electron energy loss spectra and their database: eel.geri.re.kr

  • Jeong Eun Chae;Ji-Soo Kim;Sang-Yeol Nam;Min Su Kim;Jucheol Park
    • Applied Microscopy
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    • v.50
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    • pp.2.1-2.7
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    • 2020
  • Electron energy loss spectroscopy (EELS) is an analytical technique that can provide the structural, physical and chemical information of materials. The EELS spectra can be obtained by combining with TEM at sub-nanometer spatial resolution. However, EELS spectral information can't be obtained easily because in order to interpret EELS spectra, we need to refer to and/or compare many reference data with each other. And in addition to that, we should consider the different experimental variables used to produce each data. Therefore, reliable and easily interpretable EELS standard reference data are needed. Our Electron Energy Loss Data Center (EELDC) has been designated as National Standard Electron Energy Loss Data Center No. 34 to develop EELS standard reference (SR) data and to play a role in dissemination and diffusion of the SR data to users. EELDC has developed and collected EEL SR data for the materials required by major industries and has a total of 82 EEL SR data. Also, we have created an online platform that provides a one-stop-place to help users interpret quickly EELS spectra and get various spectral information. In this paper, we introduce EEL SR data, the homepage of EELDC and how to use them.

The Study for Application of the Hot Medicinal Compress Technique of the Donguibogam ("동의보감(東醫寶鑑)"에 기재된 위법(熨法)의 활용에 대한 조사)

  • Kwon, O-Sang;Baek, Seung-Min;Kim, Sul-Gi;Choi, Sun-Mi
    • Korean Journal of Acupuncture
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    • v.28 no.4
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    • pp.137-145
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    • 2011
  • Objectives : This research dealt with the content of the hot medicinal compress technique in Donguibogam in order to develope the hot medicinal compress technique as a new therapy technique. Methods : In this research, we searched for the hot medicinal compress treatment in Donguibogam. Results : The hot medicinal compress technique mainly cures the diseases on the body surface and it can be applied to digestive troubles and gynecologic diseases. The hot medicinal compress technique is operated mainly at wound around the affected parts and it is applied to the constitutional symptom at the abdominal region. In the hot medicinal compress technique was used much more with medication, and the herbs used in the treatment consists of hot tastes and the warm characteristics. In the hot medicinal compress method with direct heating the herbs was mainly used. Conclusions : The hot medicinal compress technique is considered as treatment which can be utilized easily and it can be used an easy and useful self-treatment.

Uncertainty Evaluation of Josephson Voltage Standard in the level of $10^{-10}$ (10의 -10승 수준에서 조셉슨 전압표준기 불확도 평가)

  • Kim, K.T.;Kim, M.S.;Chong, Y.;Kim, W.S.;Song, W.
    • Progress in Superconductivity
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    • v.9 no.1
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    • pp.56-61
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    • 2007
  • The most recent improvement in the 10 V array system was carried out with focusing on noise reduction. We have evaluated the uncertainty of the 10 V Josephson array system after the improvement. The uncertainty evaluation of 10 V standard included a comparison with a programmable Josephson array system at 1 V. Every contribution to the measurement uncertainty was evaluated in the level of $10^{-10}$. The estimated combined uncertainty was found to be approximately $10^{-9}$ at 10 V, which was limited only by the indirect verifying method. In the near future, a direct comparison with another 10 V Josephson voltage standard is expected to be carried out to provide more accurate uncertainty evaluation for the KRISS Josephson voltage standard.

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Study on the Standard Specification of Linear Induction Motor Type Light Rail Vehicle Electrical Equipment (선형유도모터형식 경전철 전기장치 표준사양 연구)

  • Cho, Hong-Shik;Lee, Ho-Yong;Cho, Bong-Kwan;Hong, Jai-Sung;Ryu, Sang-Whan
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.1181-1182
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    • 2007
  • Light Rail Transit (LRT) System is an urban transit system which has approximately an intermediate transportation capacity between conventional subway and bus ($5,000{\sim}25,000$ persons per hour and per direction). It is a high-tech system which operational capacity, punctuality and mobility are remarkably improved. There are some types of LRT systems such as monorail, tramway, AGT(Automated Guideway Transit), and so on. The LRT systems have been applied and being operated in about a hundred lines around the world and many projects that apply the LRT systems in Korea are being proceeded and scheduled. For the efficient management, economical construction, and safe operation of various LRT systems, the establishment of national standard is necessary such as vehicle standardized specification, vehicle performance test standard, vehicle safety standard, construction guide, operation regulation, etc. of LRT systems. This paper presents the standard specification of electrical equipment of linear induction motor type light rail vehicle, that is LIM AGT(AGT system propelled with linear induction motor) vehicle. The LIM AGT system has been applied in Japan subway and ART(Advanced Rapid Transit) system of Canada and Yongin LRT is currently under construction.

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A Study on the Dynamic Loss Coefficients of Non-standard Fittings in Ship Exhaust Gas Pipes

  • Park, Seongjong;Park, Yonghwan;Kim, Bongjae;Choi, Jaewoong
    • Journal of Ocean Engineering and Technology
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    • v.33 no.5
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    • pp.479-485
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    • 2019
  • As exhaust gas systems of ships become more complicated, it is necessary to calculate an accurate pressure loss at their design stage. If the dynamic loss coefficients of non-standard fittings mainly used in exhaust gas pipe (EGP) are well-documented, it would be possible to calculate precise pressure loss more readily than using the conventional method that analyzes the entire system. In the case of a ship's EGP, the flow rates and temperatures of exhaust gas are determined by engine specifications, and the range of the flow rate and temperature is limited according to operating conditions. In addition, as it is possible to define non-standard fittings frequently used in an EGP, a database can be easily constructed and effective. This paper illustrates effective parameters and analysis cases of several types of non-standard fittings mounted in ship EGPs. The analysis procedure proposed in this paper is verified using existing research results on HVAC fittings. The numerical procedure, which is minimally affected by manpower and grid, is established such that it can be applied at the industry level.