• Food Science and Preservation
• /
• v.6 no.1
• /
• pp.37-42
• /
• 1999

The equilibrium moisture content(EMC) of Shiitake mushroom is and important factor because it has a close relationship to storage and drying problems. The determination of the EMC for Shiitake mushroom was made in atmospheres of various constant humidities at four different constant temperatures and the fitting of the five selected EMC models were performed with the experimental EMC data. The desorption equilibrium moisture contents for Shiitake mushroom were increased as the temperature was decreased and the relative humidity was increased. The significant difference of the equilibrium moisture content was appeared between the cap and the stipe of Shiitake mushroom. The Henderson-Thompson model was fitter than the others with the experimental data.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2005.05a
• /
• pp.372-377
• /
• 2005

EMC(Electromagnetic Compatibility) is the ability of an electronic device that operates properly in its intended electromagnetic environment and not be a source of pollution to that environment. The designer anticipates EMC problems at beginning of the process and finds remaining problems in early prototype stages, and tests the final prototypes for EMC as thoroughly as possible. This is a more cost-effective method. In this paper, it analyzes EMC problems that were appeared in actual measurement of electric power control device and presents reduction technique of these problems.

• Journal of Korean Academic Society of Home Health Care Nursing
• /
• v.17 no.1
• /
• pp.21-27
• /
• 2010

Purpose: The study evaluated a program to shorten EMC stay time. Methods: The subjects were EMC patients, and comprised a control group of 8,477 and an experimental group of 8,378. Data were collected from June 2006 to August 2007, and analyzed concerning stay time for doctor visit, decision making, and discharge. The data were analyzed by $X^2$-test and ANCOVA using SPSS14.0. Result: The stay time of doctor visit, decision making and discharge of the experimental group was significantly less compared to the control group. Using second and third grade triage criteria, the stay time of experimental group was statistically reduced from the control. Conclusion: The implemented shortening program was effective in reducing EMC stay time and increasing EMC effectiveness.

• Journal of international Conference on Electrical Machines and Systems
• /
• v.3 no.3
• /
• pp.248-251
• /
• 2014

As more vehicles become equipped with advanced electronic control systems, more consideration is needed with regards to automotive safety issues related to the effects of electromagnetic waves. Unwanted electromagnetic waves from the antenna, electricity and other electronic devices cause the performance and safety problem of automotive components. In general, Power Integrity and Signal Integrity analysis have been widely used, but these analyses have stayed PCB level. PCB base analysis is different from radiated emission TEST condition so its results are used just for reference. This paper proposes EMC optimization technology using module level 3-dimensional radiation simulation process closed to fundamental test conditions. If module level EMC analysis, which is proposed in this study, is applied to all automotive electronics systems, unexpected EMC noise will be prevented.

• Proceedings of the Korean Society of Marine Engineers Conference
• /
• 2005.06a
• /
• pp.435-441
• /
• 2005

Recently, IMO(International Maritime Organization) have provided the recommendation of EMI and EMS for radio communication and equipments of marine from SOLAS convention at July 1st 2002. In this paper, we measured EMC environment on the HANBADA, which is Korea Maritime University training ship, and the 88KUMEO of a fishing boat for basic EMC environment of a ship. Measured Band is from 30 MHz to 2 GHz, polarization measurement is processed both vertical and horizontal polarization. We analysed the results in consideration of permissible criteria.

• Proceedings of the KIPE Conference
• /
• 2002.07a
• /
• pp.99-103
• /
• 2002

IEC 61800 is an international standard on adjustable speed electrical power drive systems, which consists of three parts. IEC 61800-1 and IEC 61800-2 apply to DC power drive systems and AC power drive systems, respectively, which include power conversion, control equipment, and also a motor or motors. IEC 61800-3 specifies EMC ( Electro Magnetic Compatibility ) requirements for adjustable speed AC or DC motor drives connected to main supplies up to AC 1,000 volts. This paper studies the standards related to EMC and the text summary of international standard IEC 61800-3 which is an EMC product standard including specific test methods.

• Proceedings of the KIEE Conference
• /
• 2002.11b
• /
• pp.340-342
• /
• 2002

본 논문에서는 배전자동화용 스위치 제어장치의 전자기적합(EMC)에 대하여 고찰하였다. 먼저, 자동화용 제어장치의 EMC 성능에 영향을 주는 요인들을 분석하였다. 또한 제어장치 관련 국내외 규격들의 EMC 평가항목 및 기준을 검토하였다. 검토결과 국제규격보다 미흡함을 발견하였다. 검토결과를 바탕으로 국내 규격의 EMC 추가 항목 및 개선방안을 제안하였다.

• Proceedings of the KIEE Conference
• /
• 2002.11b
• /
• pp.343-345
• /
• 2002

본 논문은 전자식 전럭량계의 전자기적합(EMC)에 대하여 고찰하였다. 전력량계 관련 EMC 요인을 IEC 61000-4 시리즈 규격을 중심으로 고찰하였다. 또한 규격별 EMC 성능평가 항목에 대해서도 비교 검토하였다. 검토결과 국내기준은 국제규격보다 미흡함을 발견하였다. 이들을 바탕으로 국내 규격의 EMC 성능평가 개선방안을 제안하였다. 전자식 전력량계 EMC 개선방안을 연구하는데 기초 자료가 되었으면 한다.

• Proceedings of the KIEE Conference
• /
• 2006.07b
• /
• pp.715-716
• /
• 2006

Nowadays, research of EMI/EMC is very important in electromagnetic wave surroundings generated from many electric and electronic devices. Especially, analysis of electromagnetic radiation characteristic and field have to be performed first of all. At the present most of EMI/EMC problems are solved by the method of practice and inspiration. Hence in this paper, will provide the first step for solving EMI/EMC problems in design process. Model of analysis is structure composed of PCB and Frame. By the first step, theory of dipole antenna is adapted to analyze electromagnetic radiation characteristic and field. Because it is fundamental of analysis of electromagnetic radiation. And it will be expanded for structure of PCB and Frame. Finally, it provide the basic method of analysis of electromagnetic radiation characteristic and field by making similar dipole antenna to PCB and Frame structure.

• The Korean Journal of Food And Nutrition
• /
• v.9 no.2
• /
• pp.143-150
• /
• 1996

The studies was carried out to investigate ripening degree and functional properties of EMC produced with pancreatic protease and palatase ML. During production of EMC, the amounts of free amino acid and free fatty acid were increased with increasing the reaction time. The amount of total nitrogen(T-N) and water soluble nitrogen(WSN) were increased with increasing time. EMC had contents of 1.79eA T-N and 0.52o WSN at 60 min of hydrolysis time. SRI and FRI value had also a similar correlationship. On the gel filtration, 2 kinds of soluble proteining capacity was also shown in alkali solution. Furthermore the foaming stability had the same result as that of the solubility. The water absorption of EMC showed the highest level at pH 4.0 and 5.0.