Magnetically driven dielectric and structural behavior in Bi0.5La0.5FeO3

The authors would like to thank the Royal Society for a University Research Fellowship (FDM), Engineering and Physical Sciences Research Council for a studentship (CMK), and the Science and Technology Facilities Council for access to neutron facilities.A detailed structural analysis of the antiferromagnetic (Gz-type) lanthanum doped bismuth ferrite - Bi0.5La0.5FeO3 (Pn′ma′) – using variable-temperature powder neutron diffraction is reported. The analysis highlights a structural link between changes in the relative dielectric permittivity and changes in the FeO6 octahedral tilt magnitudes, accompanied by a structural distortion of the octahedra with corresponding A-site displacement along the c-axis; this behavior is unusual due to an increasing in-phase tilt mode with increasing temperature. The anomalous orthorhombic distortion is driven by magnetostriction at the onset of antiferromagnetic ordering resulting in an Invar effect along the magnetic c-axis and anisotropic displacement of the A-site Bi3+ and La3+ along the a-axis.PostprintPeer reviewe

Computational Modelling of Ceria-Based Solid Oxide Fuel Cell Electrolyte Materials

A simulation methodology for calculating the lattice parameter and oxygen ion migration energy of ceria-based electrolyte formulations is devised. The results are analysed and benchmarked against experimentally obtained values to verify the efficacy of the simulation methodology. A total of 26, 2 x 2 x 2 samarium (Sm)- and gadolinium (Gd)-doped supercells of different compositions and doping profiles were modelled and simulated by molecular mechanics force field methods using CP2K. The results of the computational simulations are comparable with those obtained experimentally, especially when there are equal amounts of Sm and Gd dopants in the structure. Simulation results can also provide insights into the mechanisms of ionic conduction. The incongruence of the computational and experimental results is attributed to the limitations of the molecular mechanics force field methodology utilised, with the expectation that an ab initio density functional theory (DFT) calculation would yield closer conformance.Postprin

Nitrated Fibrinogen is A Biomarker of Oxidative Stress in Venous Thromboembolism

The pathogenesis of venous thromboembolism (VTE) is linked to inflammation and oxidant production, although specific markers for these pathways with pathological relevance to VTE have not been explored. The coagulant protein fibrinogen is posttranslationally modified by nitric oxide-derived oxidants to nitrated fibrinogen in both acute and chronic inflammatory states. Therefore, nitrated fibrinogen may serve as a marker of inflammation and oxidative stress in VTE. To test this hypothesis we enrolled subjects (n=251) presenting with suspected VTE at the University of Pennsylvania Hospital emergency department, 50 (19.9%) of whom were positive by imaging or 90-day follow-up. Mean nitrated fibrinogen was elevated in VTE-positive (62.7 nM, 95% CI 56.6–68.8) compared to VTE-negative patients (54.2 nM, 95% CI 51.4–57.1; P\u3c0.01). Patients in the highest quartile of nitrated fibrinogen had an increased risk of VTE compared with patients in the lowest quartile (OR 3.30; 95% CI 1.25–8.68; P\u3c0.05). This risk persisted after univariate adjustment for age, active cancer, and recent surgery, but not after multivariate adjustment. Mean fibrinogen levels measured either by the Clauss assay or by ELISA were not different between VTE-negative and VTE-positive patients. These data indicate that nitrated fibrinogen is an oxidative risk marker in VTE, providing a novel mechanistic link between oxidant production, inflammation, and VTE

Aid Allocation of the Emerging Central and Eastern European Donors

The paper examines the main characteristics of the (re)emerging foreign aid policies of the Visegrád countries (the Czech Republic, Hungary, Poland, Slovakia), concentrating on the allocation of their aid resources. We adopt an econometric approach, similar to the ones used in the literature for analyzing the aid allocation of the OECD DAC donors. Using this approach, we examine the various factors that influence aid allocation of the Visegrád countries, using data for the years between 2001 and 2008. Our most important conclusion is that the amount of aid a partner county gets from the four emerging donors is not influenced by the level of poverty or the previous performance (measured by the level of economic growth or the quality of institutions) of the recipients. The main determining factor seems to be geographic proximity, as countries in the Western-Balkans and the Post-Soviet region receive much more aid from the Visegrád countries than other recipients. Historical ties (pre-1989 development relations) and international obligations in the case of Afghanistan and Iraq are also found to be significant explanatory factors. This allocation is in line with the foreign political and economic interests of these new donors. While there are clear similarities between the four donors, the paper also identifies some individual country characteristics

Structural, magnetic and electrical properties of the hexagonal ferrites MFeO3 (M=Y, Yb, In)

We thank EPSRC for funding, STFC for providing neutron facilities and Diamond Light Source for provision of synchrotron facilities. We thank Dr Chiu Tang for assistance at Diamond and Dr A. Kusmartseva (University of Edinburgh) for assistance with the SQUID measurements. FDM thanks the Royal Society for a Research Fellowship.The hexagonal ferrites MFeO3 (M=Y, Yb, In) have been studied using a combination of neutron and X-ray powder diffraction, magnetic susceptibility, dielectric measurements and 57Fe Mössbauer spectroscopy. This study confirms the previously reported crystal structure of InFeO3 (YAlO3 structure type, space group P63/mmc), but YFeO3 and YbFeO3 both show a lowering of symmetry to at most P63cm (ferrielectric YMnO3 structure type). However, Mössbauer spectroscopy shows at least two distinct Fe sites for both YFeO3 and YbFeO3 and we suggest that the best model to rationalise this involves phase separation into more than one similar hexagonal YMnO3-like phase. Rietveld analysis of the neutron diffraction data was carried out using two hexagonal phases as a simplest case scenario. In both YFeO3 and YbFeO3, distinct dielectric anomalies are observed near 130 K and 150 K, respectively. These are tentatively correlated with weak anomalies in magnetic susceptibility and lattice parameters, for YFeO3 and YbFeO3, respectively, which may suggest a weak magnetoelectric effect. Comparison of neutron and X-ray powder diffraction shows evidence of long-range magnetic order in both YFeO3 and YbFeO3 at low temperatures. Due to poor sample crystallinity, the compositional and structural effects underlying the phase separation and possible magnetoelectric phenomena cannot be ascertained.PostprintPeer reviewe

Reviews

The following publications have been reviewed by the mentioned authors;Introducing Craft Design and Technology by A. Breckon and D. Prest, reviewed by Richard KimbellThe Design Process by The Design Council, reviewed by R. MillettDesign Project No. 2 Heavy Plant by John Jeffrey and Nigel Billington, reviewed by R. LightfootThe Eighteenth Century Art, Design and Society, 1689-1789 by Bernard Denvir, reviewed by Marjorie A. CruickshankIndustrial Design Requirements of Industry by C. Hayes and K. Dorsey, reviewed by B. SmithModern Design in Plastics by D. P. Greenwood, reviewed by J. EgglestonWoodturning Projects for Dining by J. A. Sainsbury, reviewed by J. EgglestonWood Turning Music Boxes by J. A. Jacobson, reviewed by J. EgglestonYoung Blood: Britain's Art and Design Schools Today and Tomorrow edited by Kate Baynes, reviewed by A. E. LambethA. Century of Art Education 1882-1982 Hornsey College of Art Centenary Book by Clive Ashwin, reviewed by Oberta de Joi

The Ursinus Weekly, May 12, 1952

WSGA to install officers at banquet on Thursday • Sororities hold dances, elections • Ruby selects photographer • College physician, famous coach, dies • WAA gives banquet • Bus. Ad. club takes poll • Queen and court reign at May Day pageant • Commencement, Baccalaureate speakers announced • Rosicrucians to entertain new members • Curtain Club, Alpha Psi elect new presidents • Four fraternities pick new officers • Voegler to speak at Pottstown • Campus groups hold annual elections: IRC, FTA, French Club • Queen to be on TV • Editorials: Good idea; Class struggle; Capitalistic noise and smoke • Class of 1952 is invited to Alumni Association dinner • Phila. Story is grand success • Alumni group plans banquet • Pinned • Ursinus routs Pharmacy with twenty run splurge • Snell\u27s Belles win in opener • Feist hurls five hitter, Bears rout Drexel, 9-4 • Physics Department develops film loops for better teaching • Famous columnist and editor speaks to FTA • Plans of \u2752 graduates reveal varied interests • Elizabethtown wins with eight run inning, 10 to 3 • Belles trounce West Chester • Men\u27s tennis squad victor • JV softball team whips Drexel 8-3 • Ursinus cinder men lose close meet to Albright • Ursinus finishes second in track • Y plans hot dog roast for May 14 • Marine representative speaks • Engagement • Marriagehttps://digitalcommons.ursinus.edu/weekly/1544/thumbnail.jp

The Ursinus Weekly, November 3, 1952

Rushees sign sorority bids Saturday morn • Girls plan fashion show • Dr. Wagner gives med school advice • Freshmen hear Dr. Helfferich • Students discuss social life ideas at fireside chat • WSGA enforces poster removal • Quartet to sing on TV • Music Club to hold Sadie Hawkins Day square dance • Seven articles, four books left unclaimed in Dean\u27s office • Campus favors Eisenhower by majority of 151 votes • Campus Chest to hold poll this Tuesday • Group to give play Tuesday • Bus. Ad. club hears H. D. Leopold speak • Ten new members added to Weekly news and feature staff • Bazaar, ball held • Editorials: Vote is not I.Q. test; Positive ideas needed • Letters to the editor • Adlai apologia • Eisenhower: Man of integrity, character • Republican foreign policy unrealistic • Reiss, McConnell clash; Debate Ike - Adlai issue • Isolina Torres will teach in native Honduras • Woes of practice teachers, lesson plans and little devils • Belles blank Bryn Mawr • Third team is victorious, 2-0 • Ursinus Bears win in last 20 seconds: Wagner defeated 12-7 on Dick Glock\u27s aerial to Swett in thrilling climax • Bears to place streak on line • Ursinus girls sparkle in all college tournament • Merrifield, Rittenhouse and Seifert selected • Curtis beats Brodbeck, 6-0 • Engagements announced • French Club to meethttps://digitalcommons.ursinus.edu/weekly/1504/thumbnail.jp

Additional Quantitative Trait Loci and Candidate Genes for Seed Isoflavone Content in Soybean

Seed isoflavone content of soybean (Glycine max L. Merr.) is a trait of moderate heritablity and an ideal target for marker selection. To date over 20 QTL have been identified underlying this trait among seven populations. The objectives of this study were to identify additional QTL and candidate genes controlling isoflavone content in a set of recombinant inbred line (RIL) populations of soybean grown in two different seasons. Variations of isoflavones namely daidzein, glycitein and genistein contents over two growing seasons and locations suggests that isoflavones are influenced by both genes and environments. Six QTL were identified on five different chromosomes (Chr) or linkage groups (LG) that controlled daidzein (Chr_2/LG-M; Chr_17a/LG-D2), glycitein (Chr_2/LG-D1b; Chr_8/LG-A2) and genistein (Chr_8/LG-A2; Chr_12/LG-H) respectively in the seeds grown in season 2010. Two QTL were identified for daidzein (Chr_6/LG-C2; Chr_13b/LG-F), two QTLs for glycitein (Chr_1/LG-D1a; Chr_17c/LG-D2) and five QTLs for genistein (Chr_3/ LG-N; Chr_8/LG-A2; Chr_9/LG-K; Chr_18/LG-G) in the seeds of the 2011 growing season. Genes located within QTL confidence intervals were retrieved and gene ontology (GO) terms were used to identify those related to the flavonoid biosynthesis process. Twenty six candidate genes were identified that may be involved in isoflavones accumulation in soybean seeds