335 research outputs found
BES with FEM: Building Energy Simulation using Finite Element Methods
An overall objective of energy efficiency in the built environment is to
improve building and systems performances in terms of durability, comfort and
economics. In order to predict, improve and meet a certain set of performance
requirements related to the indoor climate of buildings and the associated
energy demand, building energy simulation (BES) tools are indispensable. Due to
the rapid development of FEM software and the Multiphysics approaches, it
should possible to build and simulate full 3D models of buildings regarding the
energy demand. The paper presents a methodology for performing building energy
simulation with Comsol. The method was applied to an international test box
experiment. The results showed an almost perfect agreement between the used BES
model and Comsol. These preliminary results confirm the great opportunities to
use FEM related software for building energy performance simulation.Comment: 5 pages, 6 figures, Proceedings of the 2012 COMSOL Conference in
Mila
The development of a mapping tool for the evaluation of building systems for future climate scenarios on European scale
The paper presents a tool for the mapping of the performance of building
systems on European scale for different (future) time periods. The tool is to
use for users and be applicable for different building systems. Users should
also be able to use a broad range of climate parameters to assess the influence
of climate change on these climatic parameters. Also should the calculation
time be reasonable short. The mapping tool is developed in MATLAB, which can be
used by other users for their own studies.Comment: 21 pages, 24 figures, pre-conferenc
An evidence-based Physical Activity and Fitness Programme for Ageing Adults with Intellectual Disabilities
In this study, extremely low physical activity and fitness levels among older adults
with intellectual disabilities were demonstrated. Although the importance of physical
activity for health has been recognised in the field of people with ID, only few welldesigned
studies with a substantial amount of participants evaluated the health-related
effectiveness of physical activity programmes among people with ID, mostly children
or adults with mild ID. The development of a physical activity and fitness programme
for ageing people with ID, results of implementation and execution, and programme’s
effects are described in this thesis
Application of system identification methods to implement Comsol models into external simulation environments
Full coupling of distributed parameter models, like Comsol, with the lumped models often lead to very time-consuming simulation duration times. In order to improve the speed of the simulations, the idea of using system identification methods to implement the distributed parameters models of Comsol into external simulation environments (SimuLink), is explored. It is concluded that the system identification methods are a valuable tool for such applications, and result in models that not only are easy and fast to derive using the appropriate tools (SI Toolbox of Matlab), but also in models with a very satisfactory performance that offer great reduction of the simulation times
Purification and quantification of recombinant Epstein-Barr viral glycoproteins gp350/220 from Chinese hamster ovary cells
Truncated Epstein-Barr virus (EBV) membrane antigen gp350/220 (EBV-MA) lacking the membrane anchor was expressed and secreted into the medium of recombinant Chinese hamster ovary cells that had been cultured in Plasmapur hollow-fibre modules using defined serum-free medium. The EBV-MA in the medium was concentrated by 70% (w/v) ammonium sulphate precipitation and subsequently purified by immunoaffinity chromatography using an anti-EBV-MA (EBV.0T6) monoclonal antibody (mAb) column. Adsorbed antigen was eluted with 3 M MgCl2 in phosphate-buffered saline, concentrated by Mono Q anion-exchange chromatography and analysed by sodium dodecyl sulphate-polyacrylamide gel electrophoresis, silver staining and Western blotting using EBV-positive serum and anti-EBV-MA specific mAbs. Monospecific polyclonal rabbit antibodies against the purified EBV-MA were raised and purified by protein G affinity chromatography. For the measurement of EBV-MA antigen levels a sandwich enzyme-linked immunosorbent assay using rabbit polyclonal antibodies and a horseradish peroxidase-conjugated anti-MA mAb was developed having a detection level of 10 ng/ml
Levensbeschouwing op school mist status
Volgens Expertisecentrum Lervo is er dringend behoefte aan een leerplan voor het vak levensbeschouwing en religie op middelbare scholen. ‘De school moet kinderen klaarmaken voor de superdiverse samenleving.’Religious Studie
Comsol Simulations of Cracking in Point Loaded Masonry with Randomly Distributed Material Properties
This paper describes COMSOL simulations of the stress and crack development
in the area where a masonry wall supports a floor. In these simulations one of
the main material properties of calcium silicate, its E-value, was assigned
randomly to the finite elements of the modeled specimen. Calcium silicate is a
frequently used building material with a relatively brittle fracture
characteristic. Its initial E-value varies, as well as tensile strength and
post peak behavior. Therefore, in the simulation, initial E-values were
randomly assigned to the elements of the model and a step function used for
describing the descending branch. The method also allows for variation in
strength to be taken into account in future research. The performed non-linear
simulation results are compared with experimental findings. They show the
stress distribution and cracking behavior in point loaded masonry when varying
material properties are used.Comment: Conference pape
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