2,331 research outputs found
Photoelectro-chemical properties of anilino squaraine derivatives in LB films
No full textPhotocurrent generation from Langmuir-Blodgett (LB) overlays on indium tin oxide (ITO) electrodes, where the active components are 2,4-bis[4-(dibutylamino)-2-hydroxyphenyl]squaraine (1) and the unsubstituted analogue, 2,4-bis[4-(dibutylamino)phenyl]squaraine (2), have been investigated. Dye 1 shows improved behaviour compared with the latter and differences in performance are attributed to a modified aggregate structure, this being indicated by variations in the LB film spectra. The photocurrent generation is enhanced by the presence of electron accepters, e.g. N,N'-dimethyl-4,4'-bipyridinium diiodide (MV2+), but quenched by electron donors, e.g. hydroquinone (HQ). The concentration dependence is reported
Comments on author citations for nomenclatural novelties published in volume 15 of the Flora Reipublicae Popularis Sinicae (FRPS)
No full textNovel resistance loci against <i>Pyrenophora teres</i> f. <i>teres</i> map to chromosomes 3H and 6H of barley
No full textKey messageNet-form net blotch (NFNB) is a devastating fungal disease for barley. Three potentially novel QTL for resistance and identified SNP markers can contribute to the global control efforts of NFNB.AbstractPyrenophora teres f. teres, the fungus responsible for the barley disease, net-form net blotch (NFNB), leads to considerable yield and quality reductions. This research involved collecting phenotypic and genotypic data from a barley doubled haploid (DH) mapping population consisting of 277 lines, which were exposed to the highly virulent Ptt isolate GPS18. The DH lines were derived via anther culture from second-generation hybrids of a cross between the disease-resistant barley cultivar Avc & imath; 2002 ("A") and the susceptible cultivar B & uuml;lb & uuml;l 89 ("B"). Anther pretreatment with 1.0 M mannitol resulted in a statistically superior response compared to 0.7 M mannitol in the F2 progeny of the A x B cross. The highest callus induction rate was 37.6% in the "Br_Ind" medium, and the highest green plant formation rate was 24.7% in the "PD_Reg" medium. The use of sequencing-based diversity array technology (DArT-seq) identified 9170 SNP markers, which facilitated the creation of a linkage map spanning 1682.97 cM, with an average density of 1.49 markers/cM. Quantitative trait loci (QTL) analysis identified three QTL associated with Ptt resistance located on chromosomes 3H, 4H, and 6H. All three can be considered novel with the 3H QTL mapping in between Rpt1 and QRptta3, the 4H QTL maps to a distinct region of Rpt7, and the 6H QTL maps in between the Qns-6H.3 and SFNB-6H-33.74 loci. The SNPs associated with disease resistance identified within these QTL offer a foundation for developing DNA-based tests for resistance
Learning theories and interprofessional education: a user's guide
No full textThere is increasing interest in the theoretical underpinning of interprofessional education (IPE) and writers in this field are drawing on a wide range of disciplines for theories that have utility in IPE. While this has undoubtedly enriched the research literature, for the educational practitioner, whose aim is to develop and deliver an IPE curriculum that has sound theoretical underpinnings, this plethora of theories has become a confusing, and un-navigable quagmire. This article aims to provide a compass for those educational practitioners by presenting a framework that summarizes key learning theories used in IPE and the relationship between them. The study reviews key contemporary learning theories from the wider field of education used in IPE and the explicit applications of these theories in the IPE literature to either curriculum design or programme evaluation. Through presenting a broad overview and summary framework, the study clarifies the way in which learning theories can aid IPE curriculum development and evaluation. It also highlights areas where future theoretical development in the IPE field is required
Photoelectrochemistry of Langmuir-Blodgett films of a C-60 iminodiacetic acid ester derivative on ITO electrodes
No full textThe photoelectrochemical response of a C-60 iminodiacetic acid ester derivative (C(60)IDA), deposited on ITO electrodes by means of the Langmuir-Blodgett technique, has been investigated. The anodic photocurrent observed on the modified electrode corresponds to an electron transfer from the electrolyte through the LB film to the electrode. The action spectrum of photocurrent indicates C60IDA as the photoactive species in the photoinduced electron transfer process. Positive bias voltage, reducing agent and higher pH of the solution are beneficial factors for generating higher photocurrent. The quantum yield for photocurrent generation is 0.94% and can be raised to 3.40% under favorable conditions. (C) 1998 Elsevier Science S.A. All rights reserved.Materials Science, MultidisciplinaryPhysics, Condensed MatterPolymer ScienceSCI(E)EI9ARTICLE3223-2279
Factors Affecting Local and Intra Hepatic Distant Recurrence After Surgery for Hcc: An Alternative Perspective on Microvascular Invasion and Satellitosis - A Western European Multicentre Study
No full textFactorization of weakly compact operators between Banach spaces and Fréchet or (LB)-spaces
No full text[EN] In this note we show that weakly compact operators from a Banach space X into
a complete (LB)-space E need not factorize through a reflexive Banach space. If E is a Fréchet space, then weakly compact operators from a Banach space X into E factorize through a reflexive Banach space. The factorization of operators from a Fréchet or a complete (LB)-space into a Banach space mapping bounded sets into relatively weakly compact sets is also investigated.The research of the first author was partially supported by MEC and FEDER Project MTM2010-15200 and by GV Project Prometeo/2008/101. The support of the University of Aberdeen and the Universidad Polit´ecnica of Valencia is gratefully acknowledged.Bonet Solves, JA.; Wright, JM. (2012). Factorization of weakly compact operators between Banach spaces and Fréchet or (LB)-spaces. Matematicki Vesnik. 64(4):330-335. https://riunet.upv.es/handle/10251/58753S33033564
Simulating liquid droplets: A quantitative assessment of lattice Boltzmann and Volume of Fluid methods
No full textWhile various multiphase flow simulation techniques have found acceptance as predictive tools for processes involving immiscible fluids, none of them can be considered universally applicable. Focusing on accurate simulation of liquid-liquid emulsions at the scale of droplets, we present a comparative assessment of the single-component multiphase pseudopotential lattice Boltzmann method (PP-LB, classical and modified) and the Volume of Fluid method (VOF, classical and modified), highlighting particular strengths and weaknesses of these techniques. We show that a modified LB model produces spurious velocities 1–3 orders of magnitude lower than all VOF models tested, and find that LB is roughly 10 times faster in computation time, while VOF is more versatile. Simulating falling liquid droplets, a realistic problem, we find that despite identical setups, results can vary with the technique in certain flow regimes. At lower Reynolds numbers, all methods agree reasonably well with experimental values. At higher Reynolds numbers, all methods underpredict the droplet Reynolds number, while being in good agreement with each other. Particular issues regarding LB simulations at low density ratio are emphasized. Finally, we conclude with the applicability of VOF vis-à-vis PP-LB for a general range of multiphase flow problems relevant to myriad applications.Accepted Author ManuscriptChemE/Transport PhenomenaIntensified Reaction and Separation System
- …
