1,910 research outputs found

    A historical comment about the GVT in short interval

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    In this article, the author introduces the history, progress and method in the Goldbach-Vinogradov Theorem in short interval by which every sufficiently large odd integer could be expressed as the sum of three almost equal prime numbers.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000183488400018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701MathematicsCPCI-S(ISTP)

    Investigation on the DC CB Performance during a Current Interruption Failure at First Current Zero

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    The vacuum interrupter is used as the key component of an active DCCB due to its excellent interruption and dielectric recovery characteristics after current zero. The vacuum interrupter can only interrupt the fault currents below the limitation of a critical di/dt and TIV, otherwise it causes a reignition and the interruption failure. In this paper, a detailed active injection DC CB model is developed, considering operation delay of switches, parasitic parameters of switches and thorough control logic. The limitation dielectric strength between the vacuum gap is defined by the cold break down voltage. Based on the numerical modelling, investigation will be performed to see the performance of DC CB with a failure interruption on the first current zero. The simulation results can help to optimize the injection circuit parameters when DC CB has a failure on the first current zero and has to interrupt in the next current zeros. This algorithm will consider predefined threshold of di/dt, chopping current and variable operation time in different scenarios.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Intelligent Electrical Power Grid

    Vcb|V_{cb}| and New Physics

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    The CKM matrix element Vcb|V_{cb}| has been measured from the semi-leptonic inclusive and exclusive BB meson decays with the Standard Model hypothesis. This proceedings review recent studies on New Physics effects related to these Vcb|V_{cb}| measurements. In short, one can find that NP with 5%\sim 5\% of the SM size could be allowed consistently with Belle data for the BˉD()ν\bar B \to D^{(*)} \ell \nu processes and theory evaluations for the form factors. A corresponding LHC study is also presented, in which ±+missing\ell^\pm + \text{missing} searches with data available by ATLAS can probe New Physics signal

    Technical performance of different DC CB technologies for future HVDC Grids

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    Multiterminal dc (MTDC) network is preferred due to its reliability, security of supply and flexibility. However, MTDC network also comes with the protection challenges resulting from dc faults. Hence, the dc circuit breaker (DC CB) is imperative in such a network. In these recent years, several DC CB technologies have been proposed and demonstrated by different manufacturers. Besides, these DC CB technologies differ from each other in terms of the speed of operation, interruption capability and costs. Hence, for the optimal performance of the MTDC network, a study of the co-ordinative operation of different DC CB technologies is required. In this thesis, two typical types of DC CBs are modelled in detail and implemented in a 4-terminal MTDC network in PSCAD environment, by considering operation time, interruption capability and interruption characteristics. The obtained results are used for DC CB’s selection optimization methodology for the future MTDC networks. Similarly, a scaled model of DC CB has to be analysed in terms of its interruption capability in MTDC network considering various scenarios. Therefore, in this master thesis, technical performance of DC CB technologies is conducted for a test and multiterminal dc network in EMT based software environment.The DC CB is the key to unlock the reliable operation of a Multi-terminal direct current network, whereas fast, effective and accurate models are frequently needed for system-level studies. Due to higher subsystem components in DC CB, a detailed DC CB model creates a bottleneck in the network analysis. This thesis also proposes and compares, an average model with a detailed model of Voltage source converter Assisted Resonant Current (VARC) and Mechanical DC CB in MTDC Network in terms of their performance and computation time for two typical simulation cases. The average and detailed model is modelled and simulated on the PSCAD/EMTDC electromagnetic transient platform. Decisively, this thesis concludes by presenting an accurate response of the average model during the fast transient event, showing additional computational advantage.<br/

    The SMN Tudor SIM-like domain is key to SmD1 and coilin interactions and to cajal body biogenesis

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    Cajal bodies (CBs) are nuclear organelles involved in the maturation of spliceosomal small nuclear ribonucleoproteins (snRNPs). They concentrate coilin, snRNPs and the survival motor neuron protein (SMN). Dysfunction of CB assembly occurs in spinal muscular atrophy (SMA). Here, we demonstrate that SMN is a SUMO1 target that has a small ubiquitin-related modifier (SUMO)-interacting motif (SIM)-like motif in the Tudor domain. The expression of SIM-like mutant constructs abolishes the interaction of SMN with the spliceosomal SmD1 (also known as SNRPD1), severely decreases SMN-coilin interaction and prevents CB assembly. Accordingly, the SMN SIM-like-mediated interactions are important for CB biogenesis and their dysfunction can be involved in SMA pathophysiology. © 2014. Published by The Company of Biologists Ltd.Dirección General de Investigación of Spain [grant number BFU2011-23983].Peer Reviewe

    Contract, Consideration and Consistency

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    This article seeks to continue the debate on the proper role of consideration in the formation of executory contracts at common law. It first attempts to identity the place of consideration within the theoretical framework of contract by outlining the arguments that have been made regarding the possible functions of consideration and how they correspond with the broad theories of contract. Two possible functions of consideration are identified. The first is that consideration is an indicator of an exchange. The second is that consideration is evidence that a promise or promises were made with due deliberation and with an intention that the promise or promises would be legally binding. The article then compares these two possible functions with the application of the doctrine of consideration and concludes that the evidential function is the only possible function that is consistent with the application. It then concludes by arguing that if consideration has an evidential function, alternative forms of evidence should be accepted in substitution for consideration and that therefore consideration should not be an essential element of the formation of contract. It also argues that if consideration was seen in this way, most of the problems commonly associated with the doctrine would be resolved.UnpublishedP.S. Atiyah Essays on Contract (Clarendon Press, 1994) H.G. Beale (Ed), Chitty on Contracts, (29th edition, Sweet & Maxwell, 2004) Jack Beatson “Reforming the Law of Contracts for the Benefit of Third Parties, A second bite at the Cherry” (1992) 45 CLP 1 Peter Benson “The Unity of Contract Law” in Peter Benson Ed. The Theory of Contract Law ; New Essays (Cambridge University Press, 2001) John Burrows, Jeremy Finn and Stephen Todd, The Law of Contract in New Zealand ( 3rd edition, Lexis Nexis, 2007) J.W.Carter. Elizabeth Peden and G.J. Tolhurst, Contract Law in Australia (5th edition, Lexis Nexus Butterworths, 2007) J.W. Carter, Anrew Phang Jill Poole “Reaction to Williams v Roffey” (1995) 8 JCL 248 Mindy Chen-Wishart “Consideration: Practical Benefit and the Emperor’s New Clothes” in Jack Beatson and Daniel Friedman eds Good Faith and Fault in Contract Law (Clarendon Press, Oxford, 1995) Brian Coote Consideration and Benefit: In Fact and In Law. (1990) 3 JCL 23 Brian Coote ‘Consideration and the Variation of Contracts” [2003] NZLRev 361 at 364 English Law Revision Committee (Cmd 5449), Sixth Interim Report, The Statute of Frauds and the Doctrine of Consideration, as published in (1937) 15 CAN. B Rev. 585 Charles Fried Contract as Promise: A Theory of Contractual Obligation (Harvard University Press, 1981) Lon L. Fuller Consideration and Form(1941) 41 Colum.L.Rev 799 David Ibbetson A Historical Introduction to the Law of Obligations (Oxford University Press, 2001) B Reiter, Courts, Consideration & Common Sense (1977) 27 U TLJ 439 Stephen A. Smith Contract Theory (Oxford University Press, 2004) S.J. Stoljar A history of Contract at Common Law (Australian National University Press, Canberra, 1975) Kevin M. Teevan A history of the Anglo-American Law of Contract (Greenwood Press. 1990) Department of Accountancy and Business Law, Working paper series no. 3 July 2009 G. Treitel “Consideration” in H.G. Beale General Editor Chitty on Contracts (29th edition, Sweet & Maxwell, 2004) at 221 Authorities Antons Trawling Company Ltd v Smith [2003] 2 NZLR 23 Attorney-General for England and Wales v R [2002] 2 NZLR 91 Central London Property Trust Ltd vHigh Trees House Ltd [1947] 1 KB 130 Machirus Properties Ltd v Power Sports World (1987) Ltd (1999) 4 NZConvC 193,066: Musumeci v Winadell Pty Ltd (1994)34 NSWLR The New Zealand Shipping Co. Ltd. v A.M. Satterthwaite & Co. Ltd [1974] 1 All ER 1015 (PC) Pillans and Rose v Van Mierop and Hopkins 3 Burr. 1663 (1765) Pinnel’s Case (1602) 5 Rep 117a Pollway Ltd. and Anor v Abdullah [1974] 1 W.L.R. 493 (CA) Rann v Hughes 101 ENG REP 1014n. (H.L.1778) Shadwell v Shadwell (1860) 9 CB (N.S.) 159 Stilk v Myrick (1809) 2 Camp 317 Thomas v Thomas (1842) 2 QB 851 Williams v Roffey Bros & Nicholls (Contractors) Limited [1991] 1 QB 1 (C

    Sintomas depressivos nos pacientes internados com doença hematológica em hospital geral: prevalência e correlação com variáveis clínicas

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    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde. Programa de Pós-Graduação em Ciências Médica

    Contract, Consideration and Consistency

    No full text
    This article seeks to continue the debate on the proper role of consideration in the formation of executory contracts at common law. It first attempts to identity the place of consideration within the theoretical framework of contract by outlining the arguments that have been made regarding the possible functions of consideration and how they correspond with the broad theories of contract. Two possible functions of consideration are identified. The first is that consideration is an indicator of an exchange. The second is that consideration is evidence that a promise or promises were made with due deliberation and with an intention that the promise or promises would be legally binding. The article then compares these two possible functions with the application of the doctrine of consideration and concludes that the evidential function is the only possible function that is consistent with the application. It then concludes by arguing that if consideration has an evidential function, alternative forms of evidence should be accepted in substitution for consideration and that therefore consideration should not be an essential element of the formation of contract. It also argues that if consideration was seen in this way, most of the problems commonly associated with the doctrine would be resolved.UnpublishedP.S. Atiyah Essays on Contract (Clarendon Press, 1994) H.G. Beale (Ed), Chitty on Contracts, (29th edition, Sweet & Maxwell, 2004) Jack Beatson “Reforming the Law of Contracts for the Benefit of Third Parties, A second bite at the Cherry” (1992) 45 CLP 1 Peter Benson “The Unity of Contract Law” in Peter Benson Ed. The Theory of Contract Law ; New Essays (Cambridge University Press, 2001) John Burrows, Jeremy Finn and Stephen Todd, The Law of Contract in New Zealand ( 3rd edition, Lexis Nexis, 2007) J.W.Carter. Elizabeth Peden and G.J. Tolhurst, Contract Law in Australia (5th edition, Lexis Nexus Butterworths, 2007) J.W. Carter, Anrew Phang Jill Poole “Reaction to Williams v Roffey” (1995) 8 JCL 248 Mindy Chen-Wishart “Consideration: Practical Benefit and the Emperor’s New Clothes” in Jack Beatson and Daniel Friedman eds Good Faith and Fault in Contract Law (Clarendon Press, Oxford, 1995) Brian Coote Consideration and Benefit: In Fact and In Law. (1990) 3 JCL 23 Brian Coote ‘Consideration and the Variation of Contracts” [2003] NZLRev 361 at 364 English Law Revision Committee (Cmd 5449), Sixth Interim Report, The Statute of Frauds and the Doctrine of Consideration, as published in (1937) 15 CAN. B Rev. 585 Charles Fried Contract as Promise: A Theory of Contractual Obligation (Harvard University Press, 1981) Lon L. Fuller Consideration and Form(1941) 41 Colum.L.Rev 799 David Ibbetson A Historical Introduction to the Law of Obligations (Oxford University Press, 2001) B Reiter, Courts, Consideration & Common Sense (1977) 27 U TLJ 439 Stephen A. Smith Contract Theory (Oxford University Press, 2004) S.J. Stoljar A history of Contract at Common Law (Australian National University Press, Canberra, 1975) Kevin M. Teevan A history of the Anglo-American Law of Contract (Greenwood Press. 1990) Department of Accountancy and Business Law, Working paper series no. 3 July 2009 G. Treitel “Consideration” in H.G. Beale General Editor Chitty on Contracts (29th edition, Sweet & Maxwell, 2004) at 221 Authorities Antons Trawling Company Ltd v Smith [2003] 2 NZLR 23 Attorney-General for England and Wales v R [2002] 2 NZLR 91 Central London Property Trust Ltd vHigh Trees House Ltd [1947] 1 KB 130 Machirus Properties Ltd v Power Sports World (1987) Ltd (1999) 4 NZConvC 193,066: Musumeci v Winadell Pty Ltd (1994)34 NSWLR The New Zealand Shipping Co. Ltd. v A.M. Satterthwaite & Co. Ltd [1974] 1 All ER 1015 (PC) Pillans and Rose v Van Mierop and Hopkins 3 Burr. 1663 (1765) Pinnel’s Case (1602) 5 Rep 117a Pollway Ltd. and Anor v Abdullah [1974] 1 W.L.R. 493 (CA) Rann v Hughes 101 ENG REP 1014n. (H.L.1778) Shadwell v Shadwell (1860) 9 CB (N.S.) 159 Stilk v Myrick (1809) 2 Camp 317 Thomas v Thomas (1842) 2 QB 851 Williams v Roffey Bros & Nicholls (Contractors) Limited [1991] 1 QB 1 (C

    The characteristics of the polish CB-language

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    The paper analyzes the language used by drivers on the Citizens’ Band radio (CB radio). The users of the radio communicate only in speech, their communication is highly pragmatic and based on partnership. The utterances alternate between formal and informal ones, which determines the range and register of vocabulary. Drivers often use diminutives and polite addresses thus creating the atmosphere of mutual respect and cordiality, which can be comforting and reassuring for strangers who happen to establish a casual contact. The specific language used on the CB radio fulfils two basic functions: it creates a sense of community among drivers and protects the information passed on as warnings. At the end of the paper, the author appends a comprehensive glossary of the CB language

    Production of cloned mice by aggregation of tetraploid embryo

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    Mouse chimeras can also successfully be produced using tetraploid host embryos. This study was conducted to optimize the efficiency of cloning and to produce cloned mice using tetraploid host embryos. Six hours of activation with strontium (SrCl2) was optimal for somatic cell nuclear transfer (SCNT) embryos. Cytochalasin B (CB) concentration (5 μg/ml) during enucleation was evaluated in the efficiency of implantation sites and fetus offspring. Continuous exposure to 5?50 nM trichostatin A (TSA), a histone-deacetylase inhibitor (HDACi), for 10 h is recommended for production of clone mice. Aggregated SCNTs were constructed by aggregation of SCNT embryos with tetraploid embryos to reduce epigenetic errors in the placenta. The pregnancy and implantation rates of aggregated SCNT were significantly higher than those of SCNT alone. The full-term developmental rate of aggregated embryos was also higher than that of SCNT (3.57 vs. 1.16). The placental weight of SCNT clones was significantly higher than that from in vitro fertilization (IVF). However, the placenta weight of aggregated SCNT clones was nearly the same as that of embryos in the IVF group. The placentas of SCNT-only clones appeared to have the hyperplastic histology typical of mouse clones. We produced a total of 36 clone mice, including nine heads derived from aggregated SCNT. One-half of clones derived from aggregated SCNT survived to adulthood, and 14-clones derived from SCNT grew into healthy adults. The aggregated SCNT method was useful for significantly reducing the placental weight of cloned mice and improving the efficiency of SCNT.open
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