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| 1 | Adsorption of Ce(Ⅳ) Anionic Nitrato Complexes onto Anion Exchangers and Its Application for Ce(Ⅳ) Separation from Rare Earths(Ⅲ)显示文摘Ce(Ⅳ) nitrato complexes were adsorbed on two anion exchangers based on polyvinyl pyridine (PVP) and quaternized PVP incorporated into porous silica matrix. The effect of nitric acid concentration (0.5~6 mol·L -1 ) and temperature (278~318 K) on Ce(Ⅳ) sorption efficiency was investigated. Sorption increased with increasing nitric acid concentration, indicating that Ce(NO3)6 2- complex is the main adsorbed Ce(Ⅳ) species. Oxidation of sorbents by adsorbed Ce(Ⅳ) species resulting in Ce(Ⅲ) release to the solution was observed. Pyridine based anion exchangers exhibited higher oxidation stability compared to the commercial strong base anion exchanger. Ce(Ⅳ) reduction was temperature dependent and obeyed pseudo-first-order reaction kinetics. Column separation of Ce(Ⅳ) from La(Ⅲ) and Y(Ⅲ) was carried out from 6 mol·L -1 nitric acid with PVP based anion exchanger. Reasonable Ce(Ⅳ) breakthrough capacity (0.7 mol·kg -1 PVP) was achieved. No remarkable decrease of capacity was observed within 3 consequent runs. In contrast, Ce(Ⅲ) leakage due to reduction decreased and breakthrough capacity slightly increased. This effect was more pronounced with increasing temperature. Regeneration with 0.1 mol·L -1 nitric acid was successful (recovery 100%±4%) and Ce solution of high purity (>99.97%) with respect to La and Y content was gained. | Ludek Jelinek Mikio Kumagai | 2006 | Journal of Rare Earths2006，24，4： | 9 |
| 2 | Manipulation of spermatogonial stem cells in livestock species显示文摘We are entering an exciting epoch in livestock biotechnology during which the fundamental approaches(such as transgenesis, spermatozoa cryopreservation and artificial insemination) will be enhanced based on the modern understanding of the biology of spermatogonial stem cells(SSCs) combined with the outstanding recent advances in genomic editing technologies and in vitro cell culture systems. The general aim of this review is to outline comprehensively the promising applications of SSC manipulation that could in the nearest future find practical application in livestock breeding. Here, we will focus on 1) the basics of mammalian SSC biology;2) the approaches for SSC isolation and purification;3) the available in vitro systems for the stable expansion of isolated SSCs;4) a discussion of how the manipulation of SSCs can accelerate livestock transgenesis;5) a thorough overview of the techniques of SSC transplantation in livestock species(including the preparation of recipients for SSC transplantation,the ultrasonographic-guided SSC transplantation technique in large farm animals, and the perspectives to improve further the SSC transplantation efficiency), and finally, 6) why SSC transplantation is valuable to extend the techniques of spermatozoa cryopreservation and/or artificial insemination. For situations where no reliable data have yet been obtained for a particular livestock species, we will rely on the data obtained from studies conducted in rodents because the knowledge gained from rodent research is translatable to livestock species to a great extent. On the other hand, we will draw special attention to situations where such translation is not possible. | Filipp Savvulidi Martin Ptacek Karina Savvulidi Vargova Ludek Stadnik | 2019 | Journal of Animal Science and Biotechnology2019，10，4： | 6 |
| 3 | Electro-Oxidation of Concentrated Ce(Ⅲ) at Carbon Felt Anode in Nitric Acid Media显示文摘Electro-oxidation of Ce(Ⅲ) to Ce(Ⅳ) in parallel plate flow type electrolyzer divided with cation exchange membrane was carried out in nitric acid media at carbon felt anode under galvanostatic conditions. Carbon felt was used as an anode for its high specific surface area and high oxygen evolution overpotential. Pt coated Ti plates were used as cathode and anode current feeder. The oxidation of 1 mol·L -1 Ce(Ⅲ) solution in 2 mol·L -1 HNO3 was proceeding with a high current efficiency (92%) until about 80% of Ce(Ⅲ) was oxidized. Then, oxygen evolution, accompanied by terminal voltage jump, took place, lowering current efficiency. Ce(Ⅲ) was oxidized up to 90% with current efficiency of 62%. In this mode, strong carbon felt anode oxidation was observed. The wear out of carbon felt was 46% in six consequent runs (6 h of operation). After each run, carbon felt surface had to be renewed with slightly alkaline solution to remove carbon oxidation products and ensure regular operational conditions. When anode surface was blocked, oxygen evolution took place from the beginning of electrolysis due to higher actual current density. The wear out of carbon felt anode could be minimized by means of oxygen evolution prevention. In the case when electrolysis had been stopped before oxygen evolution started (at Ce(Ⅳ) conversion of about 80%), the wear out of anode was less than 2% during 6 consequent runs (4 h of operation). | Jelinek Ludek Mikio Kumagai | 2006 | Journal of Rare Earths2006，24，3： | 6 |
| 4 | Infliximab trough levels may predict sustained response to infliximab in patients with Crohn’s disease显示文摘 | Martin Bortlik Dana Duricova Karin Malickova Nadezda Machkova Eva Bouzkova Ludek Hrdlicka Arnost Komarek Milan Lukas | 2012 | Journal of Crohn’s and Colitis2012，，： | 2 |
| 5 | Direct Spectroscopic Determination of Europium( Ⅱ ) Concentration During Europium( Ⅲ ) Electro-Reduction in Hydrochloric Acid Medium显示文摘 | Ludek Jelinek Tsuyoshi Arai Wei Yuezhou Mikio Kumagai | 2007 | Journal of Rare Earths2007，25，1： | 2 |
| 6 | Magnetoelastic strain sensors for the outdoors application 显示文摘 | Jan Bydzovsky Ludek Kraus Peter Svec | 2004 | Journal of Magnetism and Magnetic Materials2004，，272276： | 1 |
| 7 | Exploring the natural role of microcystinsa review of effects on photoautotrophic organisms显示文摘 | Pavel B ludek B Blahoslav M | 2006 | J Phycol2006，42，： | 1 |
| 8 | Rare occurrence of DNMT3A mutations in myelodysplastie syndromes 显示文摘 | Thol F Winschel C Ludeking A | 2011 | Hematologica2011，96，12： | 1 |
| 9 | Problem of the reference height of the projectile trajectory as a reduced meteo-ballistic weighting factor显示文摘This paper deals with the issue of preparation of the aiming angles with the use of tabular firing tables and needed determination of the ballistic elements μ_B(ballistic wind w_B,w_(xB),w_(ZB),ballistic(virtual) temperature τ_B.ballistic density p_B) from the standardized met messages.The weighting factors are used for the calculation of ballistic elements μ_B that are incorporated into the trajectory calculations characteristics of weapon and ammunition.Two different methodologies practically used in the praxis are analysed and compared.For the comparison of the two methodologies the reference height of trajectory determined from the weighting factor functions is employed.On the basis of the analyses conducted,the potential for further increase in accuracy of these aiming angles preparation methods is pointed out. | Vladimir CECH Ludek JEDLICKA Jiri JEVICKY | 2014 | Defence Technology(防务技术)2014，10，2： | 1 |
| 10 | Userconfigurable MAGIC for Eleetmassnetic PIC Calculations显示文摘 | Goplen B Ludeking L Smaithe D | 1995 | Comput Phys Commun1995，87，： | 1 |
| 11 | Jasmonic acid and herbivory differentially induce carnivore-attracting plant volatiles in lima bean plants显示文摘 | Dicke M Gols R Ludeking D | 1999 | J Chem Ecol1999，25，8： | 1 |
| 12 | Glutamine deficiency in extracellular fluid exerts adverse effects on protein and amino acid metabolism in skeletal muscle of healthy, laparotomized, and septic rats显示文摘 | Milan Holecek Ludek Sispera | 2014 | Amino Acids2014，，5： | 1 |
| 13 | Evaluation of Turbulence Models in Predicting Hypersonic and Subsonic Base Flows Using Grid Adaptation Techniques显示文摘The flows behind the base of a generic rocket, at both hypersonic and subsonic flow conditions, are numerically studied. The main concerns are addressed to the evaluation of turbulence models and the using of grid adaptation techniques. The investiga- tion focuses on two configurations, related to hypersonic and subsonic experiments. The applicability tests of different turbulence models are conducted on the level of two-equation models calculating the steady state solution of the Reynolds-averaged Navier-Stokes(RANS) equations. All used models, the original Wilcox k-ω, the Menter shear-stress transport (SST) and the explicit algebraic Reynolds stress model(EARSM) formulation, predict an asymmetric base flow in both cases caused by the support of the models. A comparison with preliminary experimental results indicates a preference for the SST and EARSM results over the results from the older k-ω model. Sensitivity studies show no significant influence of the grid topology or the location of the laminar to turbulent transition on the base flow field, but a strong influence of even small angles of attack is reported from the related experiments. | YOU Yancheng BUANGA Bjorn HANNEMANN Volker LUDEKE Heinrich | 2012 | Chinese Journal of Aeronautics2012，25，3： | 1 |
| 14 | Effect of electro- magnetic fields on the denitrification activity of Paracoc- cus denitrificans显示文摘 | LUKAS F LUDEK S VLADIMIR V | 2007 | Bioelectrochemistry2007，，70： | 1 |
| 15 | User-eonfigurable MAGIC for electromagnetic PIC eaeulations显示文摘 | Goplen B Ludeking L Smithe D | 1995 | Comp Phys Commun1995，87，12： | 1 |
| 16 | Incidence and prognostic influ- ence of DNMT3A mutations in acute myeloid leukernia显示文摘 | Thol F Damrn F Ludeking A | 2011 | J Clin On- col2011，29，： | 1 |
| 17 | User-configiarable MAGIC code for electromagnetic PIC calculations显示文摘 | Goplen B Ludeking L Smithe D | 1995 | Comp Phys Comm1995，87，12： | 1 |
| 18 | An analysis of anthropogenic deforestation using logistic regression and GIS 显示文摘 | Ludeke A K Maggio R C Reid L M | 1990 | Journal of Environmental Management1990，31，3： | 1 |
| 19 | User configurable MAGIC for electromagnetic PIC calculations显示文摘 | Goplen B Ludeking L Simithe D | | 0，，1： | 1 |
| 20 | Review of the distribution,status and conservation of musk deer in China显示文摘 | Zhou YJ Meng XX Feng JJ Yang QS Feng ZJ Ludek B | 2004 | Folia Zoologica2004，53，2： | 1 |
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