6,071 research outputs found
Vacuum Insulation Panels Applied in Building Constructions
No full textDue to sustainability and due to international treaties, it is desired and required to reduce greenhouse gas emissions drastically. One contributor to these emissions is the burning of fossil fuels for generating power and electricity to be used in and for buildings. Buildings and building-related processes are responsible for about 40% of the primary energy consumption in the European Union. More than half of this energy is applied for heating systems in dwellings and commercial buildings. The European Union therefore has laid down new energy performance requirements for buildings in the European Directive on the Energy Performance of Buildings. Moreover, a reduction of energy losses of buildings during their occupational phase is important for facilitating the implementation of sustainable energy sources in the built environment. Increasing the insulation value of the envelope of buildings may contribute to this reduction of primary energy use. Two strategies can be followed. The first strategy is to increase the thickness of the thermal insulation layer. Until recently, this strategy has primarily been adopted. If, however, German or Swiss Passivhaus standard is applied, the thickness of this insulation layer would increase to beyond 30 cm, resulting in very thick building enclosures. The second, more innovative, strategy for reducing energy losses through the building skin would be the application of more effective thermal insulators. One such more effective thermal insulator is a vacuum insulation panel, abbreviated as VIP. A VIP consists of an open-celled core material which is evacuated and then tightly sealed into a barrier envelope to maintain this vacuum. The vacuum inside the pores of the core material reduces the thermal conductivity of the product significantly, as a result of which the thickness of the insulation layer can be reduced to obtain a certain performance. This reduction of thickness is among the most promising features for large-scale application of VIPs in the building industry. However, integration of VIPs into buildings must be performed very meticulously for several reasons; first, due to its nature a VIP cannot be processed on site and needs careful planning in advance; second, it is very sensitive to mechanical damage thus requiring careful handling; third, thermal bridges along the panel’s edges reduce its performance; fourth, the composite system is highly subjected to aging. This dissertation therefore looks into many of these aspects, presents several calculation tools and shows how VIPs can be applied in façade panels, EPS insulation boards and as under-floor insulation. With the wide-spread proliferation of VIPs in buildings a more sustainable and healthy environment can then be achieved.Building TechnologyArchitectur
Letter from M.J. Curran to Hagan
No full textHolograph letter from M.J. Curran, Holy Cross College, Clonliffe, Dublin, to Hagan � the very welcome news have arrived: 'we shall be a happy family with kindred friends'. Asking for advice on what to bring out for personal purposes, and for the canonisation process; expecting to arrive Easter week because of work for process 1. Adding that there is a 'new stunt from Lord Northcliffe � Dominion H. Rule for � Ireland (and) a separate Ulster Parl.[iament]'; like all the others he is too late. Reporting that the Sinn Fein round-up was largely a failure, and Barton's capture accidental
Book Review: Reginald M.J. Oduor’s Introduction to Ethics
No full textTITLE OF BOOK: Introduction to Ethics
AUTHOR: Reginald M.J. Oduor
Nairobi: Sophia Publications Ltd., 2009, 116 pages
COVER: Paperback
ISBN: 9966-7457-0-X
This book is a product of more than a decade of Oduor’s experience in teaching ethics (moral philosophy) at the University of Nairobi. In the course of this introduction, the reader gets to see the techniques of philosophic reflection in action, as they are employed to scrutinise various pertinent moral questions
The Fenian Ideal and Irish Nationalism, 1882-1916
No full textThis book analyses Fenian influences on Irish nationalism between the Phoenix Park murders of 1882 and the Easter Rising of 1916. It challenges the convention that Irish separatist politics before the First World War were marginal and irrelevant, showing instead that clear boundaries between home rule and separatist nationalism did not exist. Kelly examines how leading home rule MPs argued that Parnellism was Fenianism by other means, and how Fenian politics were influenced by Irish cultural nationalism, which reinforced separatist orthodoxies, serving to clarify the ideological distance between Fenians and home rulers. It discusses how early Sinn Fein gave voice to these new orthodoxies, and concludes by examining the ideological complexities of the Irish Volunteers, and exploring Irish politics between 1914 and 1916
Letter from M.J. Curran to Hagan
No full textHolograph letter from M.J. Curran, Holy Cross College, Clonliffe, Dublin, to Hagan, hoping his health is improving still; expecting to arrive on 27 March. Advising him that the brother of Eoin MacNeill, Charles, will call on him on his way to Malta; he is a good Irish historical and antiquarian scholar; he is bringing the expenses for the beatification ceremony, asking about the date; some bishops are planning to travel to Rome. He only heard now that Se�n T.'s illness is more serious �sending regards. Commenting that the government's attempt to force through the Home Rule Bill will be only the beginning of their troubles. Holding the Education Bill to be more serious; the bishops will cause universal agitation about it; meetings are to be held on Passion Sunday. Hagan's aunt is anxious for him to have his vacation
Letter from M.J. Curran to Hagan
No full textHolograph letter from M.J. Curran, Tivoli, to Hagan, enclosing a letter from Reali (not extant) and discussing financial matters. Fr. Mallon was ordained on Sunday; the Archbishop of Manila has left. Critical comments on a letter from [the Archbishop of] Sydney who claims that his clergy would welcome a genuine Home Rule Act. The [Bishop of] Cloyne wrote requesting a full statement for his diocesan account. Dr. [O'Neill] left after a few days; Fr. Crotty left suddenly and Canice [O'Gorman] is planning to go also, via Belgium. The Bishop of Tivoli invited himself for a day at the end of the month. He sent Cardinal Logue the papers regarding Oliver Plunkett's head. Some comments on the weather and the mosquitoes
Developing a trading rule from the FTSE-100 stock index futures contract: evidence in support of the EMH
No full textAn extensive literature documents the predictability of both short and long horizon returns, over a wide range of sample periods, frequencies and markets. This predictability may represent weak form inefficiency, or it may be caused by a failure to account for a time-variation in risk. We develop statistically reliable ex ante models of the returns on the FTSE-100 stock index futures contract and test a simple trading rule based on the out-of-sample predictions from these models. We interpret the failure of our ex ante model to produce abnormal returns for a risk neutral investor as evidence in favour of the EMH. Our trading rule results clearly suggest that we should be careful in interpreting such ex ante models as evidence of financial market inefficiency
Comments on “Precipitation kinetics of Al–1.12Mg2Si–0.35Si and Al–1.07Mg2Si–0.33Cu alloys”
No full textIt is shown that in analysing DSC data of precipitation reactions in Al–1.12Mg2Si–0.35Si, Al–1.07Mg2Si–0.33Cu and Al–1.0Mg2Si–0.5Ag alloys in work by Gaber et al., accurate values for the activation energies are obtained by applying the method derived by the present author (the Type B-1.92 method). Values obtained from other analysis methods reported by Gaber et al. are less accurate. Averaging activation energies obtained by different methods introduces inaccuracies and obscures these inaccuracies, especially if the set of methods applied includes highly inaccurate ones, such as the Ozawa and Takhor methods
Aḥmad b. Yaḥyā al-Balādhurī, Kitāb Futūḥ al-buldān by al-Balādhūrī Liber expugnationis regionum auctore Imámo Ahmed ibn Jahja ibn Djábir al-Beládsorí, M.J. de Goeje’s Classic Edition (1866), édité par M.J. de Goeje, Londres, Brill, 2013, 678p.
No full textThis is a reprint of Kitāb Futūḥ al-buldān by Aḥmad b. Yaḥyā al-Balādhurī (d. c. 892 CE), edited by M.J. de Goeje and originally titled Liber expugnationis regionum (Leiden,1870). The work offers an account of the early conquests of the Islamic polity. It has the form of a geographical survey of the Caliphate’s territories, describing how each location came under Muslim rule
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