• Title/Summary/Keyword: Dutch

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Environmental Assessment of Vitrified Mine Tailing Aggregate Using Various Leaching Methods (고농도 중금속 함유 광미를 이용한 유리화 처리 골재의 장기 용출특성에 따른 환경안전성 평가)

  • Lee, Sang-Woo;Chun, Sa-Ho;Lee, Ki-Kang;Lee, Sanghoon
    • Journal of Environmental Impact Assessment
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    • v.16 no.1
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    • pp.35-43
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    • 2007
  • Vitrified aggregates obtained by using mine tailings were evaluated using various leaching methods to assess their environmental safety. The leaching tests in this study include continuous batch leaching, Dutch availability leaching, pH-stat and tank diffusion test as well as TCLP (Toxicity Characteristic Leaching Procedure), which is commonly adopted. Vitrification technique has successfully been applied treating some solid wastes containing high level of heavy metals, such as EAF (Electric Arc Furnace) dust and mine tailings. The potentially most leachable element among trace metals was As and theoretically about 7% of total concentrations in the aggregate can be released under extreme condition. Zinc was leached about 4% and the other trace metals including Cd, Cr and Pb were hardly released from the vitrified mine tailing aggregate.

An Intervention Study on the Implementation of Control Banding in Controlling Exposure to Hazardous Chemicals in Small and Medium-sized Enterprises

  • Terwoert, Jeroen;Verbist, Koen;Heussen, Henri
    • Safety and Health at Work
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    • v.7 no.3
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    • pp.185-193
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    • 2016
  • Background: Management and workers in small and medium-sized enterprises (SMEs) often find it hard to comprehend the requirements related to controlling risks due to exposure to substances. An intervention study was set up in order to support 45 SMEs in improving the management of the risks of occupational exposure to chemicals, and in using the control banding tool and exposure model Stoffenmanager in this process. Methods: A 2-year intervention study was carried out, in which a mix of individual and collective training and support was offered, and baseline and effect measurements were carried out by means of structured interviews, in order to measure progress made. A seven-phase implementation evolutionary ladder was used for this purpose. Success and failure factors were identified by means of company visits and structured interviews. Results: Most companies clearly moved upwards on the implementation evolutionary ladder; 76% of the companies by at least one phase, and 62% by at least two phases. Success and failure factors were described. Conclusion: Active training and coaching helped the participating companies to improve their chemical risk management, and to avoid making mistakes when using and applying Stoffenmanager. The use of validated tools embedded in a community platform appears to support companies to organize and structure their chemical risk management in a business-wise manner, but much depends upon motivated occupational health and safety (OHS) professionals, management support, and willingness to invest time and means.

Usage Pattern Analysis and Comparative Analysis among User Groups of Web Sites Using Process Mining Techniques (프로세스 마이닝을 이용한 웹 사이트의 이용 패턴 분석 및 그룹 간 비교 분석)

  • Kim, Seul-Gi;Jung, Jae-Yoon
    • The Journal of Bigdata
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    • v.2 no.2
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    • pp.105-114
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    • 2017
  • Today, many services are supported on the web sites. Analysis of usage patterns of web site visitors is very important to optimize the use and efficiency of the web sites. In this study, analysis of usage patterns and comparative analysis of user groups were conducted by analyzing web access log provided by BPI Challenge 2016. This data provides access logs to the web site in the IT system of a Dutch Employee Insurance Agency (UWV). The customer information, and the click data describing the customers' behavior when using the agency's web site. In this study, we use process mining techniques to analyze the usage patterns of customers and the characteristics of customer groups, and ultimately improve the service quality of customers using web services.

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Exposure to Environmental Endotoxin and Health Effects (환경 중의 엔도톡신 노출 및 건강에 미치는 영향)

  • Park, Ju-Hyeong
    • Journal of Environmental Health Sciences
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    • v.40 no.4
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    • pp.265-278
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    • 2014
  • Microbes such as bacteria, fungi, archaea, protists, and viruses are ubiquitous and people are exposed to them continuously. Endotoxin is a component of the outer membrane of Gram-negative bacteria and a potent proinflammaotry substance. When a person is exposed to environmental endotoxin, an innate immune response is initiated upon the initial recognition and this response produces various inflammatory mediators and recruits inflammatory cells to the exposed tissues. A purified chemical form of endotoxin is called lipopolysaccharide (LPS), and the lipid A portion of the molecule is a biologically active moiety. Exposure to endotoxin may result in various complex health effects depending on time, route, and dose of exposure, as well as host susceptibility. Gene-environment interactions play important roles in health effects of endotoxin exposure, e.g. development or aggravation of asthma. To accurately assess exposure to endotoxin in environmental or epidemiologic studies, methods of sampling, extraction, and analysis must be carefully selected since the selected methods may substantially affect analytical results and there is no internationally-agreed standard method to date. The lack of a standardized method hampers the establishment of exposure-response relationships. While an internationally-agreed health-based exposure limit does not exist, the Dutch Expert Committee on Occupational Safety recently recommended $90EU/m^3$ as a health-based occupational exposure limit. The current article reviews various scientific issues on how we measure environmental endotoxin and the health effects of endotoxin exposure.

A Study on the Flight Control Law and the Dynamic Characteristic about Variation of Feedback Gains of T-50 Lateral-Directional Axis (T-50 가로-방향축 비행제어법칙 설계 및 궤환이득의 변화에 따른 항공기 동특성에 관한 연구)

  • Kim Chong-Sup;Hwang Byung-Moon;Kang Young-Shin
    • Journal of Institute of Control, Robotics and Systems
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    • v.12 no.7
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    • pp.621-630
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    • 2006
  • The T-50 advanced trainer aircraft combines advanced aerodynamic features and a fly-by-wire flight control system in order to produce a stability and highly maneuverability. The flight control system both longitudinal and lateral-directional axes to achieve performance enhancements and improve stability. The T-50 employs the RSS concept in order to improve the aerodynamic performance in longitudinal axis and the longitudinal control laws employ the dynamic inversion with proportional-plus-integral control method. And, lateral-directional control laws employ the blended roll system both beta-betadot feedback and simple roll rate feedback with proportional control method in order to guarantee aircraft stability. This paper details the design process of developing lateral-directional control laws, utilizing the requirement of MIL-F-8785C and MIL-F-9490D. And, this paper propose the analysis of aircraft characteristics such as dutch-roll mode, roll mode, spiral mode, gain and phase margin about gains for lateral-directional inner loop feedback.

The influence of task demands on the preparation of spoken word production: Evidence from Korean

  • Choi, Tae-Hwan;Oh, Sujin;Han, Jeong-Im
    • Phonetics and Speech Sciences
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    • v.9 no.4
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    • pp.1-7
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    • 2017
  • It was shown in speech production studies that the preparation unit of spoken word production is language particular, such as onset phonemes for English and Dutch, syllables for Mandarin Chinese, and morae for Japanese. However, there have been inconsistent results on whether the onset phoneme is a planning unit of spoken word production in Korean. In this study, two sets of experiments investigated possible influences of task demands on the phonological preparation in native Korean adults, namely, implicit priming and word naming with the form preparation paradigm. Only the word naming task, but not the implicit priming task, showed a significant onset priming effect, even though there were significant syllable priming effects in both tasks. Following the attentional theory ($O^{\prime}S{\acute{e}}aghdha$ & Frazer, 2014), these results suggest that task demands might play a role in the absence/presence of onset priming effects in Korean. Native Korean speakers could maintain their attention to the shared onset phonemes in word naming, which is not very demanding, while they have difficulties in allocating their attention to such units in a more cognitive-demanding implicit priming, even though both tasks involve accessing phonological codes. These findings demonstrate that there are cross-linguistic differences in the first selectable unit in preparation of spoken word production, but within a single language, the preparation unit might not be immutable.

Model Prediction of Nutrient Supply to Ruminants from Processed Field Tick Beans

  • Yu, P.;Christensen, D.A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.17 no.12
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    • pp.1674-1680
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    • 2004
  • The objective of this study was to compare the Dutch DVE/OEB system and the NRC-2001 model in the prediction of supply of protein to dairy cows from processed field tick beans. Comparisons were made in terms of 1) ruminally synthesized microbial CP, 2) truly absorbed protein in the small intestine, and 3) degraded protein balance. The results showed that the predicted values from the DVE/OEB system and the NRC-2001 model had significant correlations with high R (>0.90) values. However, using the DVE/OEB system, the overall average microbial protein supply based on available energy was 16% higher and the truly absorbed protein in the small intestine was 9% higher than that predicted by the NRC-2001 model. The difference was also found in the prediction of the degraded protein balances (DPB), which was 5% lower than that predicted based on data from the NRC-2001 model. These differences are due to considerably different factors used in calculations in the two models, although both are based on similar principles. It need to mention that this comparison was based on the limited data, the full comparison involving various types of concentrate feeds will be investigated in the future.

A comprehensive review on Tukhm-e-Karafs (Apium graveolens L.) with special reference to Unani System of Medicine

  • Naushad, Mohd;Zakir, Mohammad;Sahar, Najmus;Kazmi, Munawwar Husain
    • CELLMED
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    • v.10 no.3
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    • pp.20.1-20.6
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    • 2020
  • The Karafs is a dried herb of whole plant of Apium graveolens L. from Apiaceae (carrot family). The seeds (fruits) of Apium graveolens are known as Tukhm-e- Karafs in Unani Medicine. Karafs is known as Celeri in French, Apio in Spanish, Selderiji in Dutch, Syelderey in Russian and Chin in Chinese. It is cultivated in different parts of the world for its seeds as spice and green leaves and root as salad crop. Its seeds are also used for medicinal purposes in complementary and alternative medicines. In Unani it is used as a single drug or as an ingredient in compound formulations used for management in various ailments. The seeds have various pharmacological actions like hepatoprotective, diuretic and lithotriptic etc. It is commonly found in Western Asia, Europe, North Africa and various parts of India like Punjab, Uttar Pradesh and Himachal Pradesh etc. In Unani its actions are described as Mudirr-i-Bawl (Diuretic), Mufattit-i-Hasāh (Lithotriptic), Dafi'-i-Tashannuj (Antispasmodic) and Kāsir-i-Riyāh (Carminative). It is used for the treatment of Hasah al-Kulya (Nephrolithiasis), Nafkh al-Mi'da (Flatulence), Istisqā' (Oedema) and Ihtibās al-Bawl (Retention of urine) etc.

21세기 국제항공정책 방향

  • 정일영
    • Proceedings of the KOR-KST Conference
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    • 1998.10b
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    • pp.452-452
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    • 1998
  • 1. 세계 항공시장의 동향 ○ 항공운송산업의 규제완화 및 항공자유화 추세의 확산 -78년 미국의 규제완화 이후 유럽, 대양주, 아시아 등으로 파급 ○ 미국의 항공자유의 정책(Open skies Policy)은 EU의 역대 완전자유화와 함께 세계항공시장의 자유화 촉진 ○ 항공사간 전략적 제휴의 확산 -British Connection, Star Alliance, Southern Comfort, Dutch Treat 등 4대 범세계적 제휴가 결성 또는 추진 중. 2. 우리나라 항공운송산업의 현황 ○ 세계 10위권 항공운송국가로 성장 -화물 세계5위, 여객 11위(97 ICAO통계) -김포공항은 97년 중 36.5백만명 처리로 세계9위 차지 ○ IMF체계의 영향과 경영수지 변화 추이 -98년 내국인 출국자는 감소하였으나, 외국인 관광객은 증가(10.8%) * 98. 1∼8전년대비 수송수요 국제선 17%, 국내선 26% 감소 -97년 양 항공사 적자규모 약 4,000억원으로 대폭 증가, 98상반기 회복추세. 3. 21세기 국제항공정책 방향 ○ 적극적인 항공시장 개방정책 추진과 역내 주요도시간 셔틀화 ○ 세계 주요 항공사와의 전략적 제휴를 지원하여 세계항공시장에서의 경쟁력 제고 * KAL-이, AAR-AA -인천국제공항의 HUB화 추진(민간 경영기법 도입, 항공개방정책 등) ○ 항공사가 최적의 노선망과 경제성을 갖도록 하는 적정 성장방안 강구 ○ 선진국 수준의 획기적 항공안정 체계 확립

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A Study of Verb-Second Phenomena in Medieval Spanish Complex Sentences

  • Cho Eun-Young
    • Language and Information
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    • v.9 no.2
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    • pp.85-105
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    • 2005
  • This study aims at investigating the 'verb-second' phenomena indicated in complex sentences of medieval Spanish. Especially, when the complex sentence is composed of a preposed adverbial clause and its succeeding main clause, the subject inversion is noticeable in the latter. The fundamental motive of this type of inversion is due to the 'verb-second' structure, in which a topic appears in the first position and the verb immediately after the topic. So it can be said that the subject inversion is a prerequisite for a verb to be located in the second position when the adverbial clause functions as a topic to the main clause, as is often the case with Germanic languages like German, Dutch, etc.. On the contrary, modern Spanish complex sentences do not show this phenomenon, with a strong tendency to locate a grammatical subject in the preverbal position. Therefore, medieval Spanish might be typologically closer to Germanic languages than to modern Spanish. In order to argue for this assumption, the formal and functional criteria by which the preposed adverbial clause could be defined as a topic NP will be examined across the comparition with left-dislocation structure.

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