Bulk-sensitive Photoemission of Mn5Si3

We have carried out a bulk-sensitive high-resolution photoemission experiment on Mn5Si3. The measurements are performed for both core level and valence band states. The Mn core level spectra are deconvoluted into two components corresponding to different crystallographic sites. The asymmetry of each component is of noticeable magnitude. In contrast, the Si 2p spectrum shows a simple Lorentzian shape with low asymmetry. The peaks of the valence band spectrum correspond well to the peak positions predicted by the former band calculation.Comment: To be published in: Solid State Communication

Future therapeutic targets in rheumatoid arthritis?

Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by persistent joint inflammation. Without adequate treatment, patients with RA will develop joint deformity and progressive functional impairment. With the implementation of treat-to-target strategies and availability of biologic therapies, the outcomes for patients with RA have significantly improved. However, the unmet need in the treatment of RA remains high as some patients do not respond sufficiently to the currently available agents, remission is not always achieved and refractory disease is not uncommon. With better understanding of the pathophysiology of RA, new therapeutic approaches are emerging. Apart from more selective Janus kinase inhibition, there is a great interest in the granulocyte macrophage-colony stimulating factor pathway, Bruton's tyrosine kinase pathway, phosphoinositide-3-kinase pathway, neural stimulation and dendritic cell-based therapeutics. In this review, we will discuss the therapeutic potential of these novel approaches

ARPES: A probe of electronic correlations

Angle-resolved photoemission spectroscopy (ARPES) is one of the most direct methods of studying the electronic structure of solids. By measuring the kinetic energy and angular distribution of the electrons photoemitted from a sample illuminated with sufficiently high-energy radiation, one can gain information on both the energy and momentum of the electrons propagating inside a material. This is of vital importance in elucidating the connection between electronic, magnetic, and chemical structure of solids, in particular for those complex systems which cannot be appropriately described within the independent-particle picture. Among the various classes of complex systems, of great interest are the transition metal oxides, which have been at the center stage in condensed matter physics for the last four decades. Following a general introduction to the topic, we will lay the theoretical basis needed to understand the pivotal role of ARPES in the study of such systems. After a brief overview on the state-of-the-art capabilities of the technique, we will review some of the most interesting and relevant case studies of the novel physics revealed by ARPES in 3d-, 4d- and 5d-based oxides.Comment: Chapter to appear in "Strongly Correlated Systems: Experimental Techniques", edited by A. Avella and F. Mancini, Springer Series in Solid-State Sciences (2013). A high-resolution version can be found at: http://www.phas.ubc.ca/~quantmat/ARPES/PUBLICATIONS/Reviews/ARPES_Springer.pdf. arXiv admin note: text overlap with arXiv:cond-mat/0307085, arXiv:cond-mat/020850

Pemberdayaan Anak-anak Desa Sudimoro dengan Pembelajaran Kosakata & Numerasi Melalui DUDADAU. EDU Fun Game dan Education

Perkembangan ilmu pengetahuan dan teknologi telah membawa perubahan yang signifikan terhadap berbagai dimensi kehidupan manusia, Pendidikan merupakan ujung tombak dalam pembangunan masa depan suatu bangsa. Oleh karena itu prubahan dan perbaikan terus dilakukan pada berbagai sektor Pendidikan, dalam hal ini peneliti ingin membuat inovasi dalam Pendidikan yaitu membuat sebuah media pembelajaran yang bernama “ DUDADADU.EDU “pembelajaran Kosa Kata dan Numerisasi berbasis Fun Game dan Education. Metode yang digunakan adalah metode pendekatan untuk pelaksanaan kegiatan ini menggunakan model pembelajaran koperatif tipe STAD merupakan model yang menekankan pada aktivitas dan interaksi anatar siswa untuk saling membantu dalam penguasaan materi, tujuan dari pengabdian ini adalah untuk meningkatkan minat dan semangat para siswa di desa sudimoro, hasil yang di capai dalam kegiatan ini antara lain dampak bagi pembelajaran siswa, dan juga bagi social

Key rate available from mismatched mesurements in the BB84 protocol and the uncertainty principle

We consider the mismatched measurements in the BB84 quantum key distribution protocol, in which measuring bases are different from transmitting bases. We give a lower bound on the amount of a secret key that can be extracted from the mismatched measurements. Our lower bound shows that we can extract a secret key from the mismatched measurements with certain quantum channels, such as the channel over which the Hadamard matrix is applied to each qubit with high probability. Moreover, the entropic uncertainty principle implies that one cannot extract the secret key from both matched measurements and mismatched ones simultaneously, when we use the standard information reconciliation and privacy amplification procedure.Comment: 5 pages, no figure, ieice.cls. Title was changed from version 1. To appear in IEICE Trans. Fundamentals (http://ietfec.oxfordjournals.org/), vol. E91-A, no. 10, Oct. 200

Selectivity and lifetime effects in zeolite-catalyzed Baeyer-Villiger oxidation investigated in batch and continuous flow

In this manuscript, we investigate the kinetic, mechanistic and lifetime aspects of the Baeyer-Villiger oxidation of cyclohexanone with Sn- as catalyst and H2O2 as oxidant, with the aim of 1) elucidating the overall reaction network, 2) closing the carbon balance, particularly at high levels of conversion, and 3) examining the intensification of this process in the continuous regime. The results presented herein conclusively demonstrate that this reaction is highly selective to the desired product (-caprolactone) only below conversions of 60 %. Above this level of conversion, unavoidable hydrolysis of -caprolactone to 6-hydroxyhexanoic acid is observed, which consumes the desired product and leads to a reduction in catalytic activity through poisoning. By elucidating the reaction network and working under optimized conditions, we show the potential viability of this methodology to operate continuously over a 180 h period, both at high levels of productivity (324 g (cyclohexanone converted) cm-3 (reactor volume) kg-1 (catalyst) h-1) and selectivity (± 70 % at 60 % conversion). Over 5000 substrate turnovers were observed during this period, an order of magnitude higher than previously noted for this particular catalyst system

Achievements of Hinode in the first eleven years

This is the final version. Available on open access from OUP via the DOI in this recordHinode is Japan's third solar mission following Hinotori (19811982) and Yohkoh (19912001) launched on 2006 September 22 and is in operation currently. Hinode carries three instruments; the Solar Optical Telescope (SOT), the X-Ray Telescope (XRT), and the EUV Imaging Spectrometer (EIS). These instruments were built under international collaboration with NASA and STFC (UK), and its operation has been contributed by ESA and NSC (Norway). After describing satellite operations and performance evaluation of the three instruments, reviews are given on major scientific discoveries by Hinode in the first ten years of its operation. Future prospects on solar physics research based on the achievements of Hinode conclude this review article.Science and Technology Facilities Counci

Achievements of Hinode in the first eleven years

Hinode is Japan’s third solar mission following Hinotori (1981–1982) and Yohkoh (1991–2001): it was launched on 2006 September 22 and is in operation currently. Hinode carries three instruments: the Solar Optical Telescope, the X-Ray Telescope, and the EUV Imaging Spectrometer. These instruments were built under international collaboration with the National Aeronautics and Space Administration and the UK Science and Technology Facilities Council, and its operation has been contributed to by the European Space Agency and the Norwegian Space Center. After describing the satellite operations and giving a performance evaluation of the three instruments, reviews are presented on major scientific discoveries by Hinode in the first eleven years (one solar cycle long) of its operation. This review article concludes with future prospects for solar physics research based on the achievements of Hinode