• 제목/요약/키워드: Czech Republic

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Status of Czech Low and Intermediate Radioactive Waste Management in the Context of European Development

  • Trtilek, Radek;Havlova, Vaclava;Podlaha, Josef;Svoboda, Karel;Otcovsky, Tomas
    • 방사성폐기물학회지
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    • 제19권1호
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    • pp.29-38
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    • 2021
  • The article summarises the status and competence of UJV Rez, a. s. (up to 2012, the Nuclear Research Institute Rez, Czech Republic) in the field of radioactive waste (RAW) management as a company managing of 95% of institutional radioactive wastes in Czech Republic. UJV Rez a. s. has been one of the Czech Republic's key research and engineering institutions in the field of nuclear energy production since 1955. The company processes and conditions prior to storage 95% of so-called institutional RAW and is the principal partner of the state with respect to the research support of the Czech deep geological repository development project. UJV Rez a. s. boasts its own accredited radiochemical analytical test laboratory, unique of its kind in the Czech Republic. Of equal importance is UJV Rez's active participation in a range of international organisations and associations and its involvement in wide range of international projects, and so as European projects. One of them is EU funded project PREDIS: Pre-disposal management of radioactive wastes, that has started at September 2020, focused on the field of low level radioactive waste (LLW) and intermediate level radioactive waste (ILW) pre-disposal.

Plant Inositol Signaling - Biochemical Study of Phospholipase C and D-myo-inositol -1,4,5-trisphosphate receptor

  • Martinec, Jan;Feltl, Tomas;Nokhrina, Katerina;Zazimalova, Eva;Machackova, Ivana
    • 식물조직배양학회지
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    • 제27권5호
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    • pp.375-377
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    • 2000
  • It is now generally accepted that a phosphoinositide cycle is involved in the transduction of a variety of signals in plant cells. In animal cells, the hydrolysis of phosphatidyl-4,5-bisphosphate catalysed by phosphatidylinositol - specific phospholipase C yields to D-myo-inositol - 1,4,5-trisphosphate and diacylglycerol, which are well known second messengers. The binding of InsP$_3$to a receptor located on the endoplasmic reticulum triggers a calcium release from the endoplasmic reticulum. We have detected and partially characterised key components of phosphoinositide signaling. First, tobacco microsomal fraction and plasma membrane PI-PLC. Consecutively, using a radioligand binding assay we have identified a $Ca^{2+}$ -dependent high affinity InsP$_3$binding site in microsomal membrane fraction vesicle preparation and then we have measured inositol-1,4,5-trisphosphate induced calcium release from tobacco microsomal fraction. These findings suggest that phosphoinositide signaling system is present and operates in the tobacco suspension culture.e.

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Lamin A/C and Polymeric Actin in Genome Organization

  • Ondrej, Vladan;Lukasova, Emilie;Krejci, Jana;Matula, Pavel;Kozubek, Stanislav
    • Molecules and Cells
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    • 제26권4호
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    • pp.356-361
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    • 2008
  • In this work, we have studied the structural and functional linkage between lamin A/C, nuclear actin, and organization of chromosome territories (CTs) in mammary carcinoma MCF-7 cells. Selective down-regulation of lamin A/C expression led to disruption of the lamin A/C perinuclear layer and disorganization of lamin-bound emerin complexes at the inner nuclear membrane. The silencing of lamin A/C expression resulted in a decrease in the volume and surface area of chromosome territories, especially in chromosomes with high heterochromatin content. Inhibition of actin polymerization led to relaxation of the structure of chromosome territories, and an increase in the volumes and surface areas of the chromosome territories of human chromosomes 1, 2 and 13. The results show an important role of polymeric actin in the organization of the nuclei and the chromosome territories.

한국과 체코의 애니메이션 교류를 통한 문화교류 활성화 연구 (Activation plans of the Cultural Exchanges between Korea' and the Czech Republic's Animation)

  • 박기복
    • 만화애니메이션 연구
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    • 통권36호
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    • pp.619-641
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    • 2014
  • 애니메이션은 경제적 가치와 함께 문화콘텐츠로서 상호 관련국가 간의 정체성을 확립하는 중요한 기재이다. 따라서 21세기 글로벌 시장에서 한국의 애니메이션이 대표적 문화산업의 위상을 위해 기존의 교류의 폭을 확장시킬 필요성이 있다. 특히 지역적으로 편향되어 불균등하게 나타나는 문화적 교류를 극복하기 위해 한국과 문화교류가 활성화되지 않은 체코 애니메이션의 교류 확대 가능성을 타진하고 그 효율적인 방안을 제시하고자 했다. 체코는 지정학적으로 유럽의 중심지역에 있고 산업인프라 구축, 투자 상승, 인적 자원 등의 기반이 비셰그라드 권역 국가 중 뛰어난 여건을 갖추고 있다. 그리고 유럽권역과 아시아권의 문화 접변(cultural border-crossing) 현상이 두드러지는 지역이고 동 서 유럽의 문화 종교적 특성을 융합한 국가로써, 중부유럽의 중심역할을 이행하고 있는 문화 강국으로 나타나고 있다. 따라서 체코와 한국의 애니메이션 교류는 경제적, 문화적 가치가 높다. 특히 체코는 문화예술의 독창성이 뛰어난데 그 중 전통 인형극은 체코의 대중적 삶과 문화가 연계되어 있다. 체코는 이러한 인형극을 형식적으로 스톱모션의 퍼핏(puppet) 애니메이션 장르로 계승 발전했으며 또한 내용적으로 풍자의 힘을 적극 수용하여 대중적 기반뿐만 아니라 국제적 명성을 얻고 있는 애니메이션계의 강국의 면모를 갖추었다. 따라서 이러한 상호 국가 간의 애니메이션교류를 통하여 한국 애니메이션은 교류의 다양성을 확보할 수 있을 뿐만 아니라 1990년 정식 외교 관계의 수립 후 그동안의 미미한 문화교류를 다시 활성화시킬 수 있다. 나아가서 양국 간의 국제적으로 연대 관계를 구축할 수 있을 것이다. 한 체코 문화교류 및 활성화 방안으로 스톱모션 애니메이션 워크숍 등의 구체적 방안을 제안하고자 한다.

Development of New Processes for the Decommissioning Decontamination and for Treatment and Disposal of the Secondary Low- and Intermediate-Level Radioactive Waste

  • John, Jan;Bartl, Pavel;Cubova, Katerina;Nemec, Mojmir;Semelova, Miroslava;Sebesta, Ferdinand;Sobova, Tereza;Sul'akova, Jana;Vetesnik, Ales;Vopalka, Dusan
    • 방사성폐기물학회지
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    • 제19권1호
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    • pp.9-27
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    • 2021
  • As an example of research activities in decontamination for decommissioning, new data are presented on the options for corrosion layer dissolution during the decommissioning decontamination, or persulfate regeneration for decontamination solutions re-use. For the management of spent decontamination solutions, new method based on solvent extraction of radionuclides into ionic liquid followed by electrodeposition of the radionuclides has been developed. Fields of applications of composite inorganic-organic absorbers or solid extractants with polyacrylonitrile (PAN) binding matrix for the treatment of liquid radioactive waste are reviewed; a method for americium separation from the boric acid containing NPP evaporator concentrates based on the TODGA-PAN material is discussed in more detail. Performance of a model of radionuclide transport, developed and implemented within the GoldSim programming environment, for the safety studies of the LLW/ILW repository is demonstrated on the specific case of the Richard repository (Czech Republic). Continuation and even broadening of these activities are expected in connection with the approaching end of the lifespan of the first blocks of the Czech NPPs.

Recent Curriculum Development in the Early Childhood Geometry in Czech Republic

  • Kuoina, Frantisek
    • 한국수학교육학회지시리즈D:수학교육연구
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    • 제2권1호
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    • pp.163-181
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    • 1998
  • The paper deals with some aspects of early childhood geometry in the Czech Republic. Children's first geometrical experiences come from real life. In our opinion, there exist four types of geometrical experience which can be called the partition of space, the filling of space motion in space and the dimension of space. We distinguish three levels of the mathematical learning process: a spontaneous level, an operational level and a theoretical level.

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Recent Curriculum Development in the Early Childhood Geometry in Czech Republic

  • Kurina, Frantisek
    • 한국수학교육학회지시리즈D:수학교육연구
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    • 제1권2호
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    • pp.163-181
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    • 1997
  • The paper deals with some aspects of early childhood geometry in the Czech Republic. Children's first geometrical experiences come from real life. In our opinion, there exist four types of geometrical experience which can be called the partition of space, the filling of space motion in space and the dimension of space. We distinguish three levels of the mathematical learning process: a spontaneous level, an operational level and a theoretical level.

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Strouhal number of bridge cables with ice accretion at low flow turbulence

  • Gorski, Piotr;Pospisil, Stanislav;Kuznetsov, Sergej;Tatara, Marcin;Marusic, Ante
    • Wind and Structures
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    • 제22권2호
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    • pp.253-272
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    • 2016
  • The paper concerns with the method and results of wind tunnel investigations of the Strouhal number (St) of a stationary iced cable model of cable-supported bridges with respect to different angles of wind attack. The investigations were conducted in the Climatic Wind Tunnel Laboratory of the Czech Academy of Sciences in $Tel{\check{c}}$. The methodology leading to the experimental icing of the inclined cable model was prepared in a climatic section of the laboratory. The shape of the ice on the cable was registered by a photogrammetry method. A section of an iced cable model with a smaller scale was reproduced with a 3D printing procedure for subsequent aerodynamic investigations. The St values were determined within the range of the Reynolds number (Re) between $2.4{\cdot}10^4$ and $16.5{\cdot}10^4$, based on the dominant vortex shedding frequencies measured in the wake of the model. The model was oriented at three principal angles of wind attack for each of selected Re values. The flow regimes were distinguished for each model configuration. In order to recognize the tunnel blockage effect the St of a circular smooth cylinder was also tested. Good agreement with the reported values in the subcritical Re range of a circular cylinder was obtained. The knowledge of the flow regimes of the airflow around an iced cable and the associated St values could constitute a basis to formulate a mathematical description of the vortex-induced force acting on the iced cable of a cable-supported bridge and could allow predicting the cable response due to the vortex excitation phenomenon.