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39篇 您的检索式:作者名="Youri"
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1Nitrate induction triggers different transcriptional changes in a high and a low nitrogen use efficiency maize inbred line显示文摘In higher plants, NO3 can induce its own uptake and the magnitude of this induction is positively related to the external anion concentration. This phenomenon has been characterized in both herbaceous and woody plants. Here,different adaptation strategies of roots from two maize(Zea mays L., ZmAGOs) inbred lines differing in nitrogen use efficiency(NUE) and exhibiting different timing of induction were discussed by investigating NO3 ‐induced changes in their transcriptome. Lo5 line(high NUE) showing the maximum rate of NO3 uptake 4 h after the provision of 200 mmol/L NO3 treatment modulated a higher number of transcripts relative to T250(low NUE) that peaked after 12 h. The two inbred lines share only 368 transcripts that are modulated by the treatment with NO3 and behaved differently when transcripts involved in anion uptake and assimilation were analyzed. T250 line responded to the NO3 induction modulating this group of Researchgenes as reported for several plant species. On the contrary,the Lo5 line did not exhibit during the induction changes in this set of genes. Obtained data suggest the importance of exploring the physiological and molecular variations among different maize genotypes in response to environmental clues like NO3 provision, in order to understand mechanisms underlying NUE.Anita Zamboni Stefania Astolfi Sabrina Zuchi Youry Pii Katia Guardini Paola Tononi Zeno Varanini 2014Journal of Integrative Plant Biology2014,56,11:6
2Iron Mobilization and Mineralogical Alterations Induced by Iron-Deficient Cucumber Plants (Cucumis sativus L.) in a Calcareous Soil显示文摘Dicotyledons cope with ion(Fe) shortage by releasing low-molecular-weight organic compounds into the rhizosphere to mobilize Fe through reduction and complexation mechanisms. The effects induced by these root exudates on soil mineralogy and the connections between Fe mobilization and mineral weathering processes have not been completely clarified. In a batch experiment, we tested two different kinds of organic compounds commonly exuded by Fe-deficient plants, i.e., three organic acids(citrate, malate, and oxalate)and three flavonoids(rutin, quercetin, and genistein), alone or in combination, for their ability to mobilize Fe from a calcareous soil and modify its mineralogy. The effect of root exudates on soil mineralogy was assessed in vivo by cultivating Fe-deficient and Fe-sufficient cucumber plants(Cucumis sativus L.) in a RHIZOtest device. Mineralogical analyses were performed by X-ray powder diffraction. The batch experiment showed that citrate and, particularly, rutin(alone or combined with organic acids or genistein)promoted Fe mobilization from the soil. The combinations of rutin and organic acids modified the soil mineralogy by dissolving the amorphous fractions and promoting the formation of illite. These mineralogical alterations were significantly correlated with the amount of Fe mobilized from the soil. The RHIZOtest experiment revealed a drastic dissolution of amorphous components in the rhizosphere soil of Fe-deficient plants, possibly caused by the intense release of phenolics, amino acids, and organic acids, but without any formation of illite. Both batch and RHIZOtest experiments proved that exudates released by cucumber under Fe deficiency concurred to the rapid modification(on a day-scale) of the mineralogy of a calcareous soil.Concetta Eliana GATTULLO Youry PII Ignazio ALLEGRETTA Luca MEDICI Stefano CESCO Tanja MIMMO Roberto TERZANO 2018Pedosphere2018,28,1:3
3Efficient,high-CRI white LEDs by combining traditional phosphors with cadmium-free InP/ZnSe red quantum dots显示文摘Quantum dots(QDs) offer an interesting alternative for traditional phosphors in on-chip light-emitting diode(LED) configurations.Earlier studies showed that the spectral efficiency of white LEDs with high color rendering index(CRI) values could be considerably improved by replacing red-emitting nitride phosphors with narrowband QDs.However,the red QDs in these studies were cadmium-based,which is a restricted element in the EU and certain other countries.The use of InP-based QDs,the most promising Cd-free alternative,is often presented as an inferior solution because of the broader linewidth of these QDs.However,while narrow emission lines are the key to display applications that require a large color gamut,the spectral efficiency penalty of this broader emission is limited for lighting applications.Here,we report efficient,high-CRI white LEDs with an on-chip color converter coating based on red InP/ZnSe QDs and traditional green/yellow powder phosphors.Using InP/ZnSe QDs with a quantum yield of nearly 80% and a full width at half-maximum of 45 nm,we demonstrate high spectral efficiency for white LEDs with very high CRI values.One of the best experimental results in terms of both luminous efficacy and color rendering performance is a white LED with an efficacy of 132 lm/W,and color rendering indices of R_(a)≈90,R9 ≈50 for CCT ≈4000 K.These experimental results are critically compared with theoretical benchmark values for white LEDs with on-chip downconversion from both phosphors and red Cd-based QDs.The various loss mechanisms in the investigated white LEDs are quantified with an accurate simulation model,and the main impediments to an even higher efficacy are identified as the blue LED wall-plug Quantum dots(QDs) offer an interesting alternative for traditional phosphors in on-chip light-emitting diode(LED) configurations.Earlier studies showed that the spectral efficiency of white LEDs with high color rendering index(CRI) values could be considerably improved by replacing red-emitting nitride phosphors with narrowband QDs.However,the red QDs in these studies were cadmium-based,which is a restricted element in the EU and certain other countries.The use of In P-based QDs,the most promising Cd-free alternative,is often presented as an inferior solution because of the broader linewidth of these QDs.However,while narrow emission lines are the key to display applications that require a large color gamut,the spectral efficiency penalty of this broader emission is limited for lighting applications.Here,we report efficient,high-CRI white LEDs with an on-chip color converter coating based on red In P/Zn Se QDs and traditional green/yellow powder phosphors.Using In P/Zn Se QDs with a quantum yield of nearly 80% and a full width at half-maximum of 45 nm,we demonstrate high spectral efficiency for white LEDs with very high CRI values.One of the best experimental results in terms of both luminous efficacy and color rendering performance is a white LED with an efficacy of 132 lm/W,and color rendering indices of Ra≈ 90,R9 ≈ 50 for CCT ≈ 4000 K.These experimental results are critically compared with theoretical benchmark values for white LEDs with on-chip downconversion from both phosphors and red Cd-based QDs.The various loss mechanisms in the investigated white LEDs are quantified with an accurate simulation model,and the main impediments to an even higher efficacy are identified as the blue LED wall-plug efficiency and light recycling in the LED package.BEGA KARADZA HANNES VAN AVERMAET LEILA MINGABUDINOVA ZEGER HENS YOURI MEURET 2022Photonics Research2022,10,1:2
4Plant-microorganism-soil interactions influence the Fe availability in the rhizosphere of cucumber plants 显示文摘Youry P Alexander P Roberto T 2015Plant Physiology and Biochemistry2015,87,:1
5Drip irrigation water distribution patterns:effects of emitter rate, pul- sing, and antecedent water显示文摘Skaggs Todd H Trout Thomas Rothfuss Youri 2010Soil Science Society of America Journal2010,,74:1
6Intra-arterial beta irridiation prevents neointimal hyperplasia in a hypercholesterolemic rabbit restenosis mode显示文摘Vitali Verin Youri Popowski Philip Urban 1995Circulation1995,92,:1
7Biological and clinical aspects of the vitamin D binding protein (Gc-globulin) and its polymorphism显示文摘Marijn Speeckaert Guangming Huang Joris R. Delanghe Youri E.C. Taes 2006Clinica Chimica Acta2006,,1:1
8A combined phenotypic and genotypie method for the detection of Mex efflux pumps in Pseudomonas aeruginosa显示文摘Narcisa M Youri G Laetitia A 2007Journal of Antimicrobial Chemotherapy2007,59,1:1
9An extended modeling of the micropipette aspiration experiment for the characterization of the Young's modulus and Poisson's ratio of adherent thin biological samples: Numerical and experimental studies显示文摘Thomas Boudou Jacques Ohayon Youri Arntz Gerard Finet Catherine Picart Philippe Traequi 2006Journal of Biomechanics2006,39,9:1
10A-nalysis of two novel concepts for multiview three-dimensionaldisplays using one projector 显示文摘Lawrence Bogaert Youri Meuret Herbert De Smet 2010Optical Engineering2010,49,12:1
11Genome trees and the tree of life显示文摘Youri I Wolf Igor B Rogozin 2002Trends Genetic2002,18,9:1
12Consumer Evaluations of Social AUiances:The effects of Received Fit Be- tween Companies and Non-Profit Organization显示文摘Naming Kim Youri Sung Moonkyu Lee 2012Journal of Business Ethics2012,,09:1
13The effect of magnesium supplements on early post-transplantation glucose metabolism: a randomized controlled trial 显示文摘Steven Van Laecke Evi Vanessa Nagler Youri Taes 2014Transplant Internation- al2014,,:1
14Fractionated stereotactic radiotherapy boost for gynecologic tumors: An alternative to brachytherapy?显示文摘Meritxell Mollà Lluís Escude Philippe Nouet Youri Popowski Alberto Hidalgo Michel Rouzaud Dolores Linero Raymond Miralbell 2005International Journal of Radiation Oncology Biology Physics2005,,1:1
15Drip IrrigationWater Distribution Patterns:Effects of Emitter Rate,Pulsing,and Antecedent Water显示文摘Skaggs Todd H Trout Thomas Rothfuss Youri 0,,:1
16Efficient disparity vector prediction schemes with modified P frame for 2D camera arrays显示文摘Aykut Avci Jan De Cock Peter Lambert Roel Beernaert Jelle De Smet Lawrence Bogaert Youri Meuret Hugo Thienpont Herbert De Smet 2011Journal of Visual Communication and Image Representation2011,,:1
17Aminoglycosides: activity and resistance显示文摘Marie P Mingeot L Youri G 1999Antimicrobial Agents and Chemotherapy1999,43,4:1
18Design of axisymmetrical for LED light source applications 显示文摘Bart Van Giel Youri Meuret Hugo Thienpont 2006Proceedings of SPIE2006,6196,:1
19Correlative fluorescence and electron microscopy of biocytin-filled neurons with a preservation of the postsynaptic ultrastructure显示文摘Morozov Youri Khalilov Ilgam Ben-Ari Yehezkel 2002J Neurosci Methods2002,117,1:1
20Some crystal chemistry relationships in eutectic cocrystallization of d-and f-transi- tion metal borides 显示文摘Youri Paderno Varvara Paderno Vladimir Filippov 1995Journal of alloys and Compounds1995,219,:1
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