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End-warping bracings during the construction of steel bridges

Slight bracing of steel bridges to control end-warping of their compression flanges near the end-supports can be very effective in enhancing the load-carrying capacity of the main girders that are involved. Relatively little information is available, however, regarding the stiffness and strength requirements of end-warping bracings. The results of seven large-scale laboratory tests of different co

Effects of Geometric Imperfections on the Bracing Performance of Cross Beams during Construction of Composite Bridges

Steel girders require stability controls for different construction stages before the lateral-torsional support from the concrete deck occurs. The load-carrying capacity of bridge girders and bracing forces generated in their bracings are very sensitive to the girders' initial imperfections in terms of both the magnitude and distribution along the span. Relatively little knowledge is available in

Alkali-stable and highly anion conducting poly(phenylene oxide)s carrying quaternary piperidinium cations

New durable and hydroxide ion conducting anion-exchange membranes (AEMs) are currently required in order to develop alkaline fuel cells into efficient and clean energy conversion devices. In the present work we have attached quaternary piperidinium (QPi) groups to poly(2,6-dimethyl-1,4-phenylene oxide)s (PPOs) via flexible alkyl spacer chains with the aim to prepare AEMs. The bromine atoms of brom

Energy renovation of an office building using a holistic design approach

This paper presents a holistic approach to perform energy renovations of office buildings. A real case study is used to demonstrate how different software can be used to facilitate the work of architects and engineers during different design stages. Initially, the moisture safety of the building is coupled to its energy performance to define the optimum insulation level. The new interior layout is

Clinical, Immunophenotypic and Cytogenetic Features of Megakaryocytic Blast Crisis of Chronic Myeloid Leukemia : A Single Institution Study

We present 15 patients with megakaryocytic (Mk) blast crisis (BC) of a Philadelphia (Ph) chromosome positive CML confirmed by immunophenotype analysis between 1989-2000. The primary aim of this study is to define clinical, immunological, cytogenetic and laboratory characteristics of Mk BC in Ph positive CML. We have done retrospective analysis regarding basic clinical findings, immunologic phenoty

Fattigvård, diakoni och välfärdstjänster - från restriktioner till konkurrensutsättning

The Church has been a dominant actor in the history of care and social support, but it met several restrictions during the 20th Century. The Church of Sweden now has,since the separation from the state A.D. 2000, the possibility to act as a "welfare entrepreneur". But the willingness to do so seems limited. Even if innovative examples are seen the parishes hesitate for organisational and ideologicThe Church has been a dominant actor in the history of care and social support, but it met several restrictions during the 20th Century. The Church of Sweden now has,since the separation from the state A.D. 2000, the possibility to act as a "welfare entrepreneur". But the willingness to do so seems limited. Even if innovative examples are seen the parishes hesitate for organisational and ideologic