• 제목/요약/키워드: Foreign matter

검색결과 226건 처리시간 0.02초

High-$T_c$ SQUID Application for Roll to Roll Metallic Contaminant Detector

  • Tanaka, S.;Kitamura, Y.;Uchida, Y.;Hatsukade, Y.;Ohtani, T.;Suzuki, S.
    • Progress in Superconductivity
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    • 제14권2호
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    • pp.82-86
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    • 2012
  • A sensitive eight-channel high-Tc Superconducting Interference Device (SQUID) detection system for magnetic contaminant in a lithium ion battery anode was developed. Finding ultra-small metallic foreign matter is an important issue for a manufacturer because metallic contaminants carry the risk of an internal short. When contamination occurs, the manufacturer of the product suffers a great loss from recalling the tainted product. Metallic particles with outer dimensions smaller than 100 microns cannot be detected using a conventional X-ray imaging system. Therefore, a highly sensitive detection system for small foreign matter is required. We have already developed a detection system based on a single-channel SQUID gradiometer and horizontal magnetization. For practical use, the detection width of the system should be increased to at least 65 mm by employing multiple sensors. In this paper, we present an 8-ch high-Tc SQUID roll-to-roll system for inspecting a lithium-ion battery anode with a width of 65 mm. A special microscopic type of a cryostat was developed upon which eight SQUID gradiometers were mounted. As a result, small iron particles of 35 microns on a real lithium-ion battery anode with a width of 70 mm were successfully detected. This system is practical for the detection of contaminants in a lithium ion battery anode sheet.

산초(山椒)의 이물허용치에 대한 각국의 약전 비교연구 (The Comparative Study on Zanthoxylum Peel's Impurity Tolerance Based on Pharmacopoeia by Countries)

  • 박수진;김인락
    • 대한본초학회지
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    • 제25권1호
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    • pp.45-54
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    • 2010
  • Objectives : The purpose of this study is to determine the impurity tolerance of Zanthoxylum Peel. Methods : Compare with medicinal Herb Books and the Pharmacopoeia of 6 nations. Results : Current Pharmacopoeia show different Zanthoxylum Peel's Purity, such as 2.0% of seeds and fruit stalk, etc. in North Korea, 2% of seeds in Vietnam, totally 3% in China. On the other hand, Korea and Japan set the total number 26.0% including the specific numbers such as 20.0% of seeds, 5.0% of fruit stalk, 1.0% of the other foreign matter. This Zanthoxylum Peel's Purity, 26.0%, is too high compared to that of other medical matters specified by The Korean Pharmacopoeia Ninth Edition. When The Japanese Pharmacopoeia Sixth Edition firstly set the Zanthoxylum Peel's Purity, the herbal name was Fructus. However, since the part for medical usage in origin is well-ripen pericarp, not seed, the permissible level, 30.0%, is supposed to be simple error range, 3.0%. Conclusions : As a result, I think bills concerning the Zanthoxylum Peel's Purity should be revised to the total number 3.0% or specifically set the level 2.0% of seeds, 1.0% of fruit stalk, twig and so on.

Comparison of Chemical Composition of Particulate Matter Emitted from a Gasoline Direct Injected (GDI) Vehicle and a Port Fuel Injected (PFI) Vehicle using High Resolution Time of Flight Aerosol Mass Spectrometer (HR-ToF-AMS)

  • Lee, Jong Tae;Son, Jihwan;Kim, Jounghwa;Choi, Yongjoo;Yoo, Heung-Min;Kim, Ki Joon;Kim, Jeong Soo;Park, Sung Wook;Park, Gyutae;Park, Taehyun;Kang, Seokwon;Lee, Taehyoung
    • Asian Journal of Atmospheric Environment
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    • 제10권1호
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    • pp.51-56
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    • 2016
  • Particulate matter (PM) in the atmosphere has wide-ranging health, environmental, and climate effects, many of which are attributed to fine-mode secondary organic aerosols. PM concentrations are significantly enhanced by primary particle emissions from traffic sources. Recently, in order to reduce $CO_2$ and increase fuel economy, gasoline direct injected (GDI) engine technology is increasingly used in vehicle manufactures. The popularization of GDI technique has resulted in increasing of concerns on environmental protection. In order to better understand variations in chemical composition of particulate matter from emissions of GDI vehicle versus a port fuel injected (PFI) vehicle, a high time resolution chemical composition of PM emissions from GDI and PFI vehicles was measured at facility of Transport Pollution Research Center (TPRC), National Institute of Environmental Research (NIER), Korea. Continuous measurements of inorganic and organic species in PM were conducted using an Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS). The HR-ToF-AMS provides insight into non-refractory PM composition, including concentrations of nitrate, sulfate, hydrocarbon-like and oxygenated organic aerosol, and organic mass with 20 sec time resolution. Many cases of PM emissions during the study were dominated by organic and nitrate aerosol. An overview of observed PM characteristics will be provided along with an analysis of comparison of GDI vehicle versus PFI vehicle in PM emission rates and oxidation states.

의료관광 분쟁에 관한 연구 : 외국인환자 유치업체를 중심으로 (A Study on the Strategy for Medical Disputes of Foreign Patients, With Focus on Foreign's Agency)

  • 유상희;김기홍
    • 한국중재학회지:중재연구
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    • 제26권4호
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    • pp.111-128
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    • 2016
  • Trade between nations has been considered as exchange for material things. According to recent changes in the paradigm of global trade, trade is shifting focus on the exchange of an immaterial being. Among them, the service sector is growing fast and the health service has shown exceptional growth as the healthcare market is consistently expanding. It is also part of the global service targeting people all around the world. People visiting other countries for medical service tend to spend more money and stay longer than a traveler. For these reasons, global medical service is in the spotlight as a promising and higher value-added business. The global medical service industry has been developed around Asia, specifically Thailand, Singapore, India, etc. Compared to them, Korea has come late into the market of global healthcare and the Korean government is striving to attract foreign patients. Nevertheless, there is a lack of effort to make foreign patients visiting Korea revisit Korea. Regarding foreign patients' medical disputes, these are not yet a problem officially; however, the government cannot leave the matter as it is. Medical dispute related with foreign patients is a highly complex issue due to different languages, nationalities, cultures, etc. Particularly, Korea's medical tourism is developed with Chinese visiting Korea for plastic surgery and cosmetic procedure. Thus, the Korean medical tourism market can be crowded with a lot of minor medical agencies, so-called brokers, getting foreign patients connected to the medical institutions. Consequently, Korea has received a large number of complaints and dissatisfaction. No one can predict and know what's supposed to happen in the future. Efforts of the Korean government and medical institute attracting foreign patients could be in vain. In order to take a step forward, this paper will do research on present conditions and look for strategies of improving this industry, focusing on the part of medical agency and contributing to the improvement of the Korean medical tourism industry.

목초의 생산성에 미치는 차광의 영향 (Influence of Shading on the Productivity of Grasses and Legumes)

  • 최진용;홍광표
    • 한국초지조사료학회지
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    • 제7권1호
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    • pp.8-17
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    • 1987
  • Four foreign pasture cultivars such as Lotus corniculatus cv. Maitland, Trifolium pratense cv. Deben, Lolium perenne cv. $S_{23}$ and .Dactylis glomerata cv. $S_{26}$ were tested with "Kwisan" series, a common upland soil in Southern part of Korea. The cultivars in single or mixture were grown in pot with two levels of light intensity, i.e. a full sun light condition and 50% interception. Dry matter yield of top and root and their seasonal changes, the number of tillers or branches per plant and finally competative effects of mixtures were evaluated by estimating the expected yield, relative yield totals and compensation index. The results are summarized as follows: 1. Maitland showed a significant decrease in dry matter yield in shade condition, but the number of branches of Maitland was higher than those of Deben. 2. Maitland showed higher dry matter yield than Deben during the mid-summer period, while $S_{23}$, showed higher dry matter yield than $S_{26}$ during early season. 3. Mixtures of $S_{23}$ and Maitland, and $S_{26}$ and Deben gave better response to grasses by increasing the number of tillers in shade condition. 4. Combinations of Lotus corniculatus cv. Maitland and Dactylis glomerata cv. $S_{26}$ and Trifolium pratense cv. Deben and Dactylis glomerata cv. $S_{26}$ gave higher relative yield totals and higher compensation index, which envisages that the pasture establishment rates can be enhanced when those mixtures were sown by the oversowing method in the upland soil where phosphate level is very low and infertile in general.n general.

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분말 농산물가공품의 안전성 조사 (A Study on the Safety of Powdered Agricultural Products in Incheon)

  • 박병규;김선회;여은영;이한정;서순재;권성희;송성민;주광식;허명제
    • 한국식품위생안전성학회지
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    • 제35권2호
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    • pp.136-145
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    • 2020
  • 본 연구에서는 유통 중인 분말 농산물가공품의 안전성확보를 위하여 대형마트, 온라인 쇼핑몰에서 수거한 104건을 대상으로 다종농약다성분분석법으로 검사 가능한 잔류농약 373종 및 금속성 이물을 검사하였다. 품목별 수거현황은 향신식물 33건(31.7%), 과일류 31건(29.8%), 채소류 25건(24.0%), 서류 5건(4.8%) 순이었다. 잔류농약은 전체 104건 중 7건에서 잔류허용기준 이내로 검출되어 6.7%의 검출률을 보였으며 기준을 초과한 부적합 제품은 없었다. 깔라만시분말에서 chlorpyrifos, malathion, permethrin, 노니분말에서 fenoxanil, 쑥분말에서 tebuconazole, 파프리카분말에서 tetraconazole, 신선초분말에서 etofenprox가 검출되었는데 이는 농산물중의 잔류농약이 가공품으로 이행되었을 것으로 보인다. 금속성 이물은 22.1%(23건)의 검출률을 보였으며 기준을 초과한 제품은 계피분말, 강황분말, 새싹보리분말, 쑥분말 등 16건이 발생하여 분말 농산물가공품에서는 금속성이물의 관리가 무엇보다 중요할 것으로 판단된다. 금속성 이물(쇳가루)은 단단한 건조 농산물을 분말로 만드는 분쇄과정에서 금속성 재질의 롤밀, 칼날 등의 마찰로 인해 미세한 쇳가루가 발생하면서 분말 농산물가공품에 섞여 들어가는 것으로 추정된다. 분말 농산물가공품의 안전관리를 위해서는 원재료인 농산물의 안전성 확보를 기본으로 건조원료의 분쇄과정 중 발생하는 금속성 이물의 최소화, 금속성 이물 제거 장치의 설치, 분말 농산물가공품의 정기적인 모니터링 등의 체계적인 관리를 통해 제품의 안전성을 확보할 수 있을 것으로 기대된다.

외국의 조경관련 법제도의 비교분석과 한국에서의 조경기본법 제정을 위한 합리적 적용에 관한 연구 (The analysis of the foreign laws related to landscape architecture and a study on the reasonable application to the expected organic law for landscape architecture in Korea)

  • 신익순
    • 한국조경학회지
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    • 제25권3호
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    • pp.66-88
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    • 1997
  • There is no special law of Landscape architecture in Korea. So, examining the concept from the legal basis of LA with the viewpoint of a natural scientist not a jurist, this study was conducted to grasp the present condition of the name and the related text of the foreign laws in force which were connected with LA.. And those foreign laws were arranged in the name and the text and classified by nations of regional groups and it was considered to the mutual relation with lots of laws which are scattered with the various laws. Current domestic regulations to the various fields of LA are assembled with the many related rules. The governmental organization conducting those business is nonexistent up to now and it is generally known to except the dept. of LA from the office organization in Korea. Being at a disadvantage as mentioned above, this study was progressed under the necessity of the scientific basis for the expected organic law of LA proposed to establish it by every field of LA. Though feels inconvenience if the study for the items itself of LA had been proceeded prior to the study of laws relating to LA throughout the study, such a extensive study will be a subject to be attempted constantly hereafter by all part of landscape architects. The contents of the study are as follows ; 1. The present condition of the foreign laws connected with LA 1. The proposal & analysis of the problems and the solutions to the domestic laws connected with LA 3. The proposal of the reasonable application pklan in order to establish the organic law for LA. Among the items relating to LA such as engineer, contract, planning, design and supervision, construction, maintenance, plant and planting, open space, facilities, aesthetics and sight, park, land use and development planning, urban and regional planning, leisure space planning, environmental conservation and ecology, structural engineering of construction, administration, right and penal regulations, the laws dealing with the matter relating to LA directly or indirectly are prescribed dispersedly in the many other related laws and it is concluded to be impossible for the independent law of LA is likely to be establish with not only selecting and arranging the matter having closed connections to LA directly but also being recognized as the systematic equipment of the LA business. It was to be analyzed the present condition of the collected foreign laws relating to LA. After pointing out the problems to the domestic related laws being at issue, the remedies for it were presented through the questionnaire of the landscape specialist in which the supporting opinions to the recognition to the problems and the solutions were come to a major portion. Three types of application such as applicable, non-applicable, applicable after examination were presented to decide whether or not the foreign related laws were applied to the domestic one. The result of analysis shows that 42 statutes and 9 ordinances are applicable, 4 statutes and 7 ordinances are non-applicable, 1 constitution, 81 statutes and 48 ordinances are applicable after examination.

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핵심역량 제고를 위한 수학 수업 사례 고찰 - 한국내 프랑스 외국인학교를 중심으로 - (A Case of the competencies-based mathematics lessons of one French foreign school)

  • 최승현;황혜정
    • 한국학교수학회논문집
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    • 제15권1호
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    • pp.81-108
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    • 2012
  • 최근 들어 OECD가 DeSeCo 프로젝트를 통해 빠르게 변화하는 현대 사회를 살아가기 위해 필요한 핵심역량을 제시한 이래, 핵심역량은 학교 교육과정의 새로운 비전으로 자리 잡고 있다. 한국교육과정평가원에서도 2007년 이래로 지속적인 연구를 통해 미래 한국인들에게 요구되는 핵심역량을 선정하여 이를 학교 교육과정과 연계시키는 방안을 연구하여 왔으며, 2011년에는 기존 연구를 계승하여 학습자의 핵심역량을 구현할 수 있는 교수 학습 및 평가방안, 그리고 교사교육 방안을 탐구하고자 하였다. 이는 궁극적으로 역량기반 교육과정의 현장 적용 방안을 구체화함으로써 향후 우리나라의 교과 교육과정을 선진화하는 데 기여할 것으로 기대된다. 이 연구를 위하여 뉴질랜드 중학교 네 곳, 한국 내 프랑스 및 영국 외국인학교 각각 한 곳, 한국의 국제중학교 한 곳을 선정하여 수학 교사 및 학교 관계자들을 대상으로 수업 관찰 및 면담을 실시하였는데, 본고에서는 지면 관계상, 프랑스만을 대상으로 하여, 프랑스에 관한 학습자의 핵심역량 강조에 따른 프랑스 교육 동향을 소개하고 한국 내 프랑스 외국인중학교 수학교사의 수업 사례를 심층적으로 살펴보는 데에 중점을 두었다.

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HACCP 구축을 위한 굴(Crassostrea gigas) 가공공장의 위해 평가 (Risk Assessment of Oyster Crassostrea gigas Processing Site For an HACCP System Model)

  • 강경태;김민주;박선영;최종덕;허민수;김진수
    • 한국수산과학회지
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    • 제49권5호
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    • pp.533-540
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    • 2016
  • This study assessed the risk of an oyster-shucking site to establish the hazard analysis critical control point (HACCP) system model by measuring viable cell counts, coliform group Staphylococcus aureus foreign material on oysters, oyster-producing equipment, and washing water. The viable cell count and coliform group levels of the harvested raw oysters were 4.00 log CFU/g and 1.1×102 MPN/100 g, while those of washed oysters were 2.99 log CFU/g and (3.2−4.6) × 10 MPN/100 g, respectively. After washing the oysters, no Escherichia coli or pathogenic bacteria (E. coli O157:H7, Listeria monocytogenes, S. aureus, Salmonella spp., Vibrio parahaemolyticus, and Clostridium perfringens) were detected. Regardless of the location of foreign matter, up to 100% more metallic and non-metallic foreign matter was detected at 1.5 mmΦ than at 3.5 mmΦ, using a metal detector with increased sensitivity. According to the results, the critical control points (CCP) are the washing and metal-detection processes. These results can be used as basic data to improve sanitation at oyster-shucking sites in factories with an HACCP system.

북한의 중재법의 주요 특징과 시사점 (Characteristics and Suggestions of Arbitration Act in North Korea)

  • 최석범
    • 한국중재학회지:중재연구
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    • 제17권3호
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    • pp.57-79
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    • 2007
  • Laws regarding to Arbitration in North Korea are Arbitration Act, Foreign Economic Arbitration Act, Regulations on the Foreign Trade Arbitration Commission, Regulation for treatment of cases in Arbitration Commission, Rules of Hearing. North Korea has enacted the laws related to Arbitration including Arbitration Act enacted in 1995 and Foreign Economic Arbitration Act enacted in 1999. In the North Korea's planed economy system, as there will be many disputes among organizations, companies, other Institutions Arbitration Act resolves the disputes to compete the economic plan. North Korea's Arbitration Act is different from Normal Arbitration Acts in particular other socialist states in view of arbitration agreement and selection of arbitrator and functions as the tools controlling the members of North Korea and have the characteristics such as national arbitration system and mixture of criminal trial and governmental control and strict legal control system on violent acts in North Korea's plan and plan regulation. And North Korea's Arbitration Act deals with the civil disputes and limits the parties and subject matter of arbitration. The parties in dispute such as organizations, companies, other Institutions could apply for arbitration to Central Arbitration Body and Provincial (City under the direct control of Government) Arbitration Body and Sectional Arbitration Body. The purpose of this paper is to contribute to the enhancement of the understanding arbitration in North Korea by studying the clauses in the Arbitration Act.

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