822 research outputs found
Kosciusko [music] /
No full textFor voice and piano.; Cover title.; "Introduced & sung by Miss Nella Webb."; Cover carries portraits of Nella Webb (by Rudolph Buchner), Charles Vaude and Moritz Lutzen.; Words printed as text on p. [4].; "During Moritz Lutzen's visit to Australia he offered a prize for the best lyric, by an Australian author to be set to music by himself. The prize was awarded to Charles Vaude, for his lyric 'Kosciusko,' and Miss Nella Webb produced this song with instantaneous success."--P. [4].; Also available online http://nla.gov.au/nla.mus-an8393500; 1913, by Victor J. Draper, Sydney.; NLA's NL copy from the collection of Keith Watson. ANL
Exploitation of shape memory materials in sun adaptive user-controllable building façades
No full textSmart morphing materials are increasingly studied and are also expected to soon become
economically available for architects and engineers, being potentially suitable for a great number
of applications. In particular, shape memory materials possess the unique feature of memorizing
shapes that can be continuously recovered through the application of external stimuli. This
research proves the potentialities of an adaptive shading module actuated by smart materials,
which enable the facade shape to change in response to the incoming solar radiation. The final
goal is to design a building skin that is attuned to climatic changes and which creates occupants’
awareness of environmental variation. In particular, the exploitation of the physical properties of
shape memory materials would guarantee the internal daylight comfort with (almost) zero-energy
actuation and reduced system complexity; this would be in contrast with kinetic envelopes which, in
order to preserve interior conditions in response to external variations, rely on sensors, motors, and
computational feedback loops.
Inspired by nature and mimicking petals’ movement dynamics, the proposed facade module
has been designed starting from a geometrical schematization of flower’s shape: four triangular
petals on a square basis dynamically adapt their degree of openness based on the incoming solar
radiation. The petal-like wings, actuated by strips of a two-way shape memory polymer, allow a
completely autonomous passive control of building interiors’ conditions and zero-energy actuation.
The actuator is located on each petal side directly exposed to solar irradiation, triggering the shape
transition: activation is started by solar absorption, which increases the polymer film temperature
until the transition condition in attained. Moreover, the integration and addition of a matched internal
opaque layer, actuated by a set of (electrically controlled) antagonistic shape memory alloy torsion
springs, grants the possible implementation of the resulting structure in real buildings, conciliating
comfort, well-being and user controllability of living and working environments.
Dynamic daylight simulations have been carried out to assess the effects of the resulting shading
system on a medium size office room oriented towards South-East, during the most illustrative days
of the year. The movement of the external autonomous shading layer has been discretized into four
different positions, from a completely open to a fully closed one. The daylight quality was assessed
by computing two different performance indices: the work plane illuminance and the degree of glare
probability (Dubois, 2016)
Passive curtain walls - Enhancing the multi-hazard performance of buildings
No full textGlass facades are widely used in buildings, due to a multitude of aspects. In most of the cases, wide transparent surfaces are realized in commercial, residential and strategic buildings, including airports, museums, offices, etc., often susceptible to crowd. From a structural point of view, however, under the action of exceptional loads such as human induced / accidental / natural hazards, these facades represent a critical component for buildings, due to the typical brittle behaviour and limited tensile resistance of glass, as well as to the high vulnerability of structural details, etc., hence requiring specific safety levels. In this regard, the prediction of the dynamic behaviour of facades under exceptional loads (including the interaction between a given envelope and the building), or the implementation and optimization of advanced retrofitting tools, represent open topics still requiring extended investigations. Taking advantage of earlier studies, the current research aims to assess the feasibility and potential of special vibration control systems (VCSs) at the interface between a multi-storey building and the enclosing facade, under extreme loading scenarios
Letter containing inquiry regarding the ethnic identity of the descendents of Georg Moritz Oppenheim.
No full textLetter from Wilhelm Gehlig to Rabbi Dr. Freudenthal in Nuremberg with a genealogical question regarding Georg Moritz Oppenheim. Of particular interest to the author is to determine whether Oppenheim's descendents are "rein jüdischen Blutes (=of pure Jewish blood)."Robert Singermandigitize
Conventional and circular economy compliant modification strategies for recycled polypropylene
No full textAuthor Moritz MagerMasterarbeit Universität Linz 2021Arbeit gesperr
Conventional and circular economy compliant modification strategies for recycled polypropylene
No full textAuthor Moritz MagerMasterarbeit Universität Linz 2021Arbeit gesperr
Hayo Haya Maaseh [= Once upon a time]
No full textAnthology of East European Jewish folklore, with introduction and sources. The anthology includes: songs, tales, traditions, customs, jokes, proverbs, riddles. Authored by Chaim Ben Zion Elon-Baranik (born 1901). Published immediately after the Second World War. Illustrations by Moritz Oppenheimer, L. Pilichowski, Yosef Budko, E.M. Lilien (his signature in print). Most of the illustrations are printed on separated chrome paper, on one side of the page. Folklore publishing, Tel Aviv. HaIvri press, Jerusalem. 22 em. [1],303, [3] pages. Excellent condition. Chipped top of spine. . '... Olb price140-160This is a hardbound book (hard cover)Language note: HebrewChaim Ben Zion Elon-Barani
Structural adhesive SikaForce 7710 L100 - Experimental characterization
Get PDFStructural adhesives are an essential element in the majority of the structural glass constructions. Present design guidance for structural glass is not yet completed established, and does not cover complex systems, often required for large structures or elaborated details. For these cases, the design must be established from numerical modelling calibrated with results from full scale testing.
The preparation of effective numerical models requires the accurate knowledge of the geometry and mechanical properties of all the materials involved. This is particularly critic in structures encompassing flexile materials, namely adhesives, in the sense it affects global deformability, the distribution of internal forces, and ultimately the resistance.
Adhesive materials are rubbery polymers with complex behaviour affected by a number of factors like load duration and environmental factors, and feature mainly hyperelastic behaviour. For these reasons, the full characterization of the structural behaviour of adhesives is complex. In terms of experimental assessment, a significative number of tests is needed, opposite to what happens with standard non-flexible materials.
The aim of the present work is to present the experimental characterization of the structural adhesive SikaForce 7710 L100, and the subsequent establishment of calibration parameters needed for fitting to hyperelastic models in the FE code Abaqus.
The experimental tests were performed at the Civil Engineering and Mechanical Engineering departments of the University of Coimbra, Portugal (2017). The tests included uniaxial tension, plane tension and plane shear (Fig. 1 to 3). An optical data aquision system was used to ensure the necessary accuracy (Fig 4)
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