• 제목/요약/키워드: Recovering use

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Saccharomyces cerevisiae KNU5377 with Multiple Stress Tolerance and its Potential as a Worldwide On-site Industrial Strain for Alcohol Fermentation

  • Paik, Sang-Kyoo;Ingnyol Jin;Yun, Hae-Sun;Park, Sae-Hun;Shin, Seong-Chul;Kim, Jae-Wan;Shin, Ki-Sun;Lee, Jung-Sook;Park, Yong-Ha
    • Microbiology and Biotechnology Letters
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    • v.30 no.4
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    • pp.425-429
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    • 2002
  • Saccharomyces cerevisiae KNU5377 was examined to assay the recovering capacity against heat and other stressors. Along with a particular fermentation ability that is able to produce ethanol even at high temperature such as $40^{\circ}C$ with a comparable rate to the fermentation at $33^{\circ}C$, this strain also exhibited higher viability than a reference strain owing to its own thermotolerance that conferred the survival after the severe heat shock at $60^{\circ}C$ for 30 minutes. Furthermore, this strain showed outstanding tolerances against $H_2O_2$, ethanol and some chemical compounds. But, especially due to the thermotolerance, this strain has been suspected of other species of yeast. However, ITS (internally transcribed spacer) 1 and 2 sequencing data confirmed this strain was a typical strain of S. cerevisiae. The outstanding tolerances to various environmental stressors Indicate this S. cerevisiae KNU5377 is enough to use both as an on-site potential strain for world-wide alcohol fermentation industry and as a model strain for researches into the routes to acquire the tolerance to various stressors.

A Study on Attitude toward In-flight Internet Usage (기내인터넷 이용자의 이용속성에 관한 연구)

  • Park, Kwang-Sik;Kim, Hyae-Yeon;Son, Won-Mog
    • Korean Business Review
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    • v.19 no.1
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    • pp.35-51
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    • 2006
  • Airline industry which is depressed owing to terror attack on September 11 and Iraq War in early 21 century through high fuel cost and continuous recession in the second half of 90's is gradually recovering from the year of 2004. So demand of airline industry is rising step by step and investment of airlines toward customer service is also going up. Recently some mega carriers in head customer service in-flight internet service. In addition, so do domestic airlines and others ant to be backward. Many Study on usage attitude toward internet have been argued continuously as a result of everyday life using internet. Although there were survey for the revenue perspective of the firm, study on the side of the consumer is so rare. This study used the model of DEA -conjoint what users of the in-flight internet service now attitude and preference important factors to use. As a result, factors chosen are method to charge, service speed of internet, quality of contents provided and ease of approach toward information. This study presents airlines supplying in-flight internet service now to differentiation strategy for each segment.

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Study on the Policy for the Preservation of Tradition in Paris as a Major Element of Sustainable Development (파리시 도시지역계획의 지속가능한 개발 핵심전략으로서 '전통수복정책' 연구)

  • Park, Jin-A
    • Journal of architectural history
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    • v.20 no.2
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    • pp.23-38
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    • 2011
  • France is known to be making particular efforts to maintain its traditional urban architectural culture by diverse measures including the implementation of urban policies. However, France is facing up to the need to pursue modern urbanization in keeping with the requirements of the current times. Thus, this paper examines with what priority France is attempting to reflect in its current urban policies its determination to retain its urban architectural tradition and to recreate its capital city of Paris as a future European hub city. To that end, the paper first seeks to analyze Paris' policies for urban architecture from diachronic perspectives in a bid to determine Paris' urban architectural culture. Second, the study attempts to examine within the purview of the paradigm of contemporary urban architectural designs how Paris is pursuing the two conflicting purposes of the preservation of tradition and modern urbanization through the Paris Local Urbanization Plan (or Plan Local d'Urbanisme [PLU]). First, the findings indicate that Paris is applying the principle of a sustainable development plan in all fields of environment, economy and society. In terms of environmental sustainability, Paris is trying to improve the life quality of its citizens through the establishment of efficient mass transportation systems and the expansion of its green belt areas. In terms of social sustainability, Paris is implementing policies to ensure social diversity through housing policies. Also, in terms of economic sustainability, Paris is trying to expand employment and bolster its urban functions by conserving commercial activities and developing peripheral urban areas. Second, the findings indicate that Paris' policy of recovering its traditions takes priority over that of creating a sustainable city.

The Application of CISG to International Commercial Arbitration (聯合國國際貨物銷售合同公約在國際商事仲裁中的适用(국제물품매매계약에 관한 유엔협약이 국제상사중재에서의 적용))

  • Li, Wei
    • Journal of Arbitration Studies
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    • v.26 no.1
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    • pp.107-134
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    • 2016
  • International arbitration is the important field of applying CISG and the backbone of uniform law developed by CISG. Now CIETAC tribunals like courts of contracting states apply CISG precisely, which is beneficial to improving the quality and the credit of arbitral cases. Arbitration has the characters of independence and the non-government. the legal foundation of arbitral tribunal's applying CISG are the national arbitral law, the applicable arbitral procedures and usages of arbitration, not for performing international obligations under the CISG. CIETAC mainly use China Contract Law and CISG over the cases of sale of goods. Because of no provisions on recovery of differential price loss (equal to article 75 and 76 of CISG) Chinese tribunals have more discretion in determining the sum of damages under the China Contract Law. Applying China Contract Law may not beneficial to aggrieved party.

A Spatial Error Concealment Technique with Low Complexity for Intra-frame in the H.264 Standard (H.264 인트라 프레임을 위한 저복잡도(低複雜度) 공간적 에러은닉 기법)

  • Kim Dong-Hyung;Cho Sang-Hyup;Jeong Je-Chang
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.5C
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    • pp.503-511
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    • 2006
  • H.264 adopts new coding tools such as intra-prediction, loop filter, etc. The adoption of these tools enables an H.264-coded bitstream to have more information compared with previous standards. In this paper we proposed an effective spatial error concealment method for H.264. Among the information included in an H.264-coded bitstream, we use intra-mode for recovering a damaged block. This is because prediction direction in intra-mode is highly correlated to the edge direction of a lost macroblock. We first estimate the edge direction using intra-modes of blocks adjacent to a lost macroblock, and classify the area in a damaged macroblock into the edge and the flat area. And then our method recovers pixel values in the edge area using edge-directed interpolation, and recovers pixel values in the flat area using weighted interpolation. Simulation results show the proposed method yields better video quality than conventional approaches by 0.35 to 5.48 dB.

Health Management and Dietary Behavior of Farmers in Korea - Comparison of Conventional Village and The Village with Health Care Center - (농업인의 건강과 식생활 관리 상태 - 건강관리실 설치 마을과 일반 마을의 비교 -)

  • 신영숙;김화님;이승교;박양자
    • Korean Journal of Rural Living Science
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    • v.10 no.1
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    • pp.21-32
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    • 1999
  • To investigate the status of farmers health management for health promotion, and for checking the effect of village health care center during 1 year, 746 subjects were selected with cluster method in 8 provinces of Korea. The most frequent group was 40th of age (39%) : elementary school graduates (32%) The self-conscious of health status tested with CMI (Cornell Medical Index) questionnaire, the subjects in the village of health care center had lower health status than those of conventional village. The farmers living in the village with health care center had longer agricultural work (p<0.05) and more frequency of spraying pesticides in the fields. The subjects of living the village of health care center were frequently exercise (34%) with health appliance use methods (30%), but the duration time of exercise was similar, Dietary habits and agricultural work condition were similar between two groups. For the fatigue recovery, steeping and bathing were most favorite methods, but exercise was lowest. It was significantly different between 2 groups the fatigue recovering methods, the subjects of village with health care center were more doing exercise (p<0.01), less sleeping (p<0.01) than those of conventional village. The working condition of self-estimated of farmers was not good, only 8.7% was thought pleasant condition. Of the various health factors, exercise, nutrition, and working situation would be more important. Considering on farmers exercise, it was very weak point for health management. The foundation and leading of the Farmers health care center was encouraged to farmers. For more effective operations, the experts education, easy and funny exercise program, and health promotion committee for administrators would be needed. The better systemic and continuous exercise programs should develop for associating livelihood. Funding for this project provided by the ministry of health and welfare of Korea.

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Valorization of marble's waste as a substitute in sand concrete

  • Ouassila, Boughamsa;Houria, Hebhoube;Leila, Kherref;Mouloud, Belachia;Assia, Abdelouahed;Chaher, Rihia
    • Advances in concrete construction
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    • v.9 no.2
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    • pp.217-225
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    • 2020
  • The recovery of waste proves a solution with two impacts: the environmental impact by the reduction of pollution and the gain of the occupied space by this waste, and the economic impact by the use of these lasts in the building and in the area of public works. The present research consists in recovering a waste marble (thrown powder exposed to the different meteorological phenomena) generated by the quarry marble of Fil-fila, located at the east side of Skikda in the north-east of Algeria, and add it, as sand in the composition of sand concrete. To carry out this research, we analyzed the evolution brought by the substitution of ordinary sand by marble waste sand, with 25%, 50%, 75% and 100% on the properties in the fresh state (density, workability and air content) and in the cured state (compressive strength, tensile strength, surface hardness and sound velocity). For durability we tested water absorption by immersion and chloride penetration. The results obtained are compared with control samples of 0% of substitution rate. In order to have a good filling of the voids in the granular skeleton; we added a quantity of limestone recycled fines from the quarries and for a good workability a super-plasticizing additive. The results showed that the partial substitution modified both the fresh and the hardened characteristics of the tested concretes, the durability parameters also improved.

Strategy for Solving Future Energy and Global Warming Using Icy materials (얼음 물질을 이용한 미래 에너지와 지구 온난화 처리 방안)

  • Shin, Kyu-Chul;Lee, Huen
    • Journal of Plant Biotechnology
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    • v.34 no.2
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    • pp.81-93
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    • 2007
  • Gas hydrates are known to form by physical interactions between host water and guest gas molecules and thus can be treated as a special type of icy materials. The gas hydrates are recently highlighted because of their use to future energy source even though they were discovered naturally in the deep-sea marine sediments a long time ago. However, the present and future urgent task is to develop the efficient and safe production technology for recovering methane from gas hydrates. Here, we propose one of potential recovery processes using swapping phenomenon occurring between gaseous carbon dioxide and methane hydrate deposits. Such a swapping process provide several technological and economical advantages over conventional processes. The carbon dioxide can be directly sequestered into methane hydrate layer and simultaneously methane can be produced with a high recovery rate more than 90%. In addition, the icy powders can be effectively used as a new medium for storing hydrogen. To increase hydrogen storage capacity the icy hydrate networks need to be redesigned to create the more empty cages in which hydrogen gas can be enclathrated. Functionalized icy materials might be used in a variety of energy and environmental fields.

tufA gene as molecular marker for freshwater Chlorophyceae

  • Vieira, Helena Henriques;Bagatini, Inessa Lacativa;Guinart, Carla Marques;Vieira, Armando Augusto Henriques
    • ALGAE
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    • v.31 no.2
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    • pp.155-165
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    • 2016
  • Green microalgae from the class Chlorophyceae represent a major biodiversity component of eukaryotic algae in continental water. Identification and classification of this group through morphology is a hard task, since it may present cryptic species and phenotypic plasticity. Despite the increasing use of molecular methods for identification of microorganisms, no single standard barcode marker is yet established for this important group of green microalgae. Some available studies present results with a limited number of chlorophycean genera or using markers that require many different primers for different groups within the class. Thus, we aimed to find a single marker easily amplified and with wide coverage within Chlorophyceae using only one pair of primers. Here, we tested the universality of primers for different genes (tufA, ITS, rbcL, and UCP4) in 22 strains, comprising 18 different species from different orders of Chlorophyceae. The ITS primers sequenced only 3 strains and the UCP primer failed to amplify any strain. We tested two pairs of primers for rbcL and the best pair provided sequences for 10 strains whereas the second one provided sequences for only 7 strains. The pair of primers for the tufA gene presented good results for Chlorophyceae, successfully sequencing 21 strains and recovering the expected phylogeny relationships within the class. Thus, the tufA marker stands out as a good choice to be used as molecular marker for the class.

The Essential Prescriptions of the Golden Chamber (金匮要略) use of Shen Qi Pill(肾气丸)'s for qi's transformation(气化), truly embodies the analysis found in the Yellow Emperor internal classic(黃帝内经) describing the kidney functions (종"황제내경"신지공능탐석"금궤요략"신기환기화작용적체현(从"黃帝内经"肾之功能探析"金匮要略"肾气丸气化作用的体现))

  • Park, Eun Hee;Xie, Jing;Jia, Chunhua
    • Journal of Korean Medical classics
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    • v.26 no.1
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    • pp.39-45
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    • 2013
  • Objective : This article is based on a formula taken from Essential Prescriptions of the Golden Chamber(金匮要略). Shen Qi Pill(肾气丸) is generally used for such deficiency cases as: consumptive diseases, xiaoke(消渴) (waisting, thirst), beriberi, urinary problems during pregnancy, phlegm and so forth, and its main purpose is to treat Kidney Qi depletion, Qi transformation disorders, without obvious hot/cold appearance patterns. Method : Mainly through the literature study of related treatise on IInner Canon of the Yellow Emperor's internal classic(黃帝内经) and The Essential Prescriptions of the Golden Chamber. Result : According to the Yellow Emperor's internal classic, the Kidney has three main functions, storing essence, controlling the waters and holding Qi. Shen Qi Pill's(肾气丸) source formula is intended to supplement even though its constituent herbs aren't the warming type. To reinforce the Qi's transformation ability is considered to be a main function of the kidney organ, and in clinic, diagnosed kidney related problems and its treatment process are mainly associated with warming to help the Qi transforming. Conclusion : Thus recovering the kidneys Qi's transformation function is part of the process to eliminate diseases. Just cause the Kidney is deficient we shouldn't think immediately of using warming supplement herbs.