985 research outputs found

    Sulfur Deficiency of Sugar Beets

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    Sulfur deficiency of sugar beets (Beta Vulgaris L.) was first reported in 1941 by Tolman and Stoker (10) in beets grown for seed in the Willamette Valley of Oregon. The symptoms were described as retarded growth, yellow color, breakdown of leaf tissue, lack of flowering, and increased susceptibility to disease. Since then sulfur deficiency of this crop has been reported in California (11) and Sweden (5). Sulfur deficiency of sugar beets decreases seed yield (10) as well as the yield and percent of sugar in the roots (5). A review of the sulfur requirements of sugar, fiber and oil crops has been published (8)

    Read-It: A Multi-modal Tangible Interface for Children Who Learn to Read

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    Multi-modal tabletop applications offer excellent opportunities for enriching the education of young children. Read-It is an example of an interactive game with a multi-modal tangible interface that was designed to combine the advantages of current physical games and computer exercises. It is a novel approach for supporting children who learn to read. The first experimental evaluation has demonstrated that the Read-It approach is indeed promising and meets a priori expectations

    Scalable, security-oriented solutions for nanoCMOS electronics

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    The EPSRC pilot project Meeting the Design Challenges of nanoCMOS Electronics (nanoCMOS – www.nanocmos.ac.uk) has been funded to tackle some of the challenges facing the semiconductor electronics industry caused by the progressive scaling of CMOS transistors. As transistor dimensions are now at the nanometer scale with 40nm MOSFETs already in mass production and sub-10 nm transistors scheduled for production by 2018, the intrinsic parameter fluctuations caused by the inherent discreteness of charge and matter at this atomistic scale are now one of the major challenges that the semiconductor electronics industry needs to address. The variability at the device level affects profoundly the circuit/system design process and hence can be regarded a semiconductor industry-wide problem. Fortunately many of the statistical variability related issues can be understood and forecasted through large scale simulation of ensembles of potentially hundreds of thousands of atomistically varying devices. However, one of the main distinguishing features of NanoCMOS when compared to other high performance computing (HPC) simulation domains is the imperative requirements on fine grained security. The data, the designs and even the simulations themselves all potentially have highly sensitive commercial intellectual property (IP) value associated with them, ranging from the IP of device manufacturers and the design houses through to licenses needed to run simulation and design software. This paper outlines the e-Infrastructure that has been developed within the nanoCMOS project with specific focus upon the security capabilities it supports and how these address the IP protection requirements of the industrial and collaborating partners. Our ultimate goal is to provide an environment that addresses security across the board and scales to meet the HPC and data management requirements of nanoCMOS research

    Case Authoring from Text and Historical Experiences

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    Victim-offender mediation and social work: focus groups with mediators in Flanders

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    The role of social work in the restorative justice field remains largely unexplored. This article reports on the findings of focus groups conducted with mediators of juvenile and adult mediation practices in Flanders (Belgium) to gain more insight into how mediators perceive their professional role and to what extent they refer to individual and structural dimensions of social work practice. Implications for future social work involvement and research are made

    Spinor Field in Bianchi type-I Universe: regular solutions

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    Self-consistent solutions to the nonlinear spinor field equations in General Relativity has been studied for the case of Bianchi type-I (B-I) space-time. It has been shown that, for some special type of nonliearity the model provides regular solution, but this singularity-free solutions are attained at the cost of broken dominant energy condition in Hawking-Penrose theorem. It has also been shown that the introduction of Λ\Lambda-term in the Lagrangian generates oscillations of the B-I model, which is not the case in absence of Λ\Lambda term. Moreover, for the linear spinor field, the Λ\Lambda term provides oscillatory solutions, those are regular everywhere, without violating dominant energy condition. Key words: Nonlinear spinor field (NLSF), Bianch type -I model (B-I), Λ\Lambda term PACS 98.80.C CosmologyComment: RevTex, 21 page

    Crystal structure, electronic, and magnetic properties of the bilayered rhodium oxide Sr3Rh2O7

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    The bilayered rhodium oxide Sr3Rh2O7 was synthesized by high-pressure and high-temperature heating techniques. The single-phase polycrystalline sample of Sr3Rh2O7 was characterized by measurements of magnetic susceptibility, electrical resistivity, specific heat, and thermopower. The structural characteristics were investigated by powder neutron diffraction study. The rhodium oxide Sr3Rh2O7 [Bbcb, a = 5.4744(8) A, b = 5.4716(9) A, c = 20.875(2) A] is isostructural to the metamagnetic metal Sr3Ru2O7, with five 4d electrons per Rh, which is electronically equivalent to the hypothetic bilayered ruthenium oxide, where one electron per Ru is doped into the Ru-327 unit. The present data show the rhodium oxide Sr3Rh2O7 to be metallic with enhanced paramagnetism, similar to Sr3Ru2O7. However, neither manifest contributions from spin fluctuations nor any traces of a metamagnetic transition were found within the studied range from 2 K to 390 K below 70 kOe.Comment: To be published in PR

    Prospects for the CERN Axion Solar Telescope Sensitivity to 14.4 keV Axions

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    The CERN Axion Solar Telescope (CAST) is searching for solar axions using the 9.0 T strong and 9.26 m long transverse magnetic field of a twin aperture LHC test magnet, where axions could be converted into X-rays via reverse Primakoff process. Here we explore the potential of CAST to search for 14.4 keV axions that could be emitted from the Sun in M1 nuclear transition between the first, thermally excited state, and the ground state of 57Fe nuclide. Calculations of the expected signals, with respect to the axion-photon coupling, axion-nucleon coupling and axion mass, are presented in comparison with the experimental sensitivity.Comment: 4 pages, 1 figure. Submitted to Nucl. Instr. and Meth.
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