Searched for: subject%3A%22Mechanical%255C%2Bstress%22
(1 - 18 of 18)
document
Verreault, J. (author)
The Penetrator with Enhanced Lateral Effect (PELE) is a type of explosive-free projectile that undergoes radial fragmentation upon an impact with a target plate. This type of projectile is composed of a brittle cylindrical shell (the jacket) filled in its core with a material characterized with a large Poisson's ratio. Upon an impact with a...
conference paper 2014
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Gvaramia, D. (author), Blaauboer, M.E. (author), Hanemaaijer, R. (author), Everts, V. (author)
Fibrosis underlies the pathogenesis of numerous diseases and leads to severe damage of vital body organs and, frequently, to death. Better understanding of the mechanisms resulting in fibrosis is essential for developing appropriate treatment solutions and is therefore of upmost importance. Recent evidence suggests a significant antifibrotic...
article 2013
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Vink, P. (author), Hallbeck, S. (author)
The term comfort is often seen relating to the marketing of products like chairs, cars, clothing, hand tools and even airplane tickets, while in the scientific literature, the term discomfort shows up often, since it is used in research. Few papers explain the concept of a localized comfort experience in relation to product use, although people...
article 2012
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Groenesteijn, L. (author), Ellegast, R.P. (author), Keller, K. (author), Krause, F. (author), Berger, H. (author), de Looze, M.P. (author)
In the present study, we investigated the effect of office tasks on posture and movements in field settings, and the comfort rating for chair characteristics and correlation with type of task. The tasks studied were: computer work, telephoning, desk work and conversation. Postures, movements, chair part inclinations and comfort rating data were...
article 2012
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Zenk, R. (author), Franz, M. (author), Bubb, H. (author), Vink, P. (author)
For car manufacturers, seat comfort is becoming more important in distinguishing themselves from their competitors. Therefore, many studies on participative seat comfort are carried out. In this paper, an objective assessment approach is reported which evaluates the concept of "optimal load distribution", based on the identification of a close...
article 2012
document
de Vreugd, J. (author), te Voert, M.J.A. (author), Nijenhuis, J.R. (author), Pijnenburg, J.A.C.M. (author), Tabak, E. (author)
Adhesives are widely used in optomechanical structures for bonding optical components to their mounts. The main advantage of using adhesives is the excellent strength to weight ratio. Adhesive bonding is seen as a desirable joining technique as it allows for greater flexibility in design. A disadvantage of adhesives however is the limited...
conference paper 2012
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Fischer, H.R. (author), Tempelaars, K. (author), Kerpershoek, A.M. (author), Dingemans, T. (author), Iqbal, M. (author), Lonkhuyzen, H. (author), Iwanowsky, B. (author), Semprimoschnig, C. (author), TNO Industrie en Techniek (author)
Polimide-block-polydimethylsiloxane (PI-b-PDMS) block copolymers have been synthesized from commercially available amino-terminated polysiloxanes with different molecular weights, for use as polymeric materials resistant to the low earth orbit (LEO) space environment. A structural optimization with respect to maximum environmental protection has...
article 2010
document
Rubbens, M.P. (author), Mol, A. (author), van Marion, M.H. (author), Hanemaaijer, R. (author), Bank, R.A. (author), Baaijens, F.P.T. (author), Bouten, C.V.C. (author), TNO Kwaliteit van Leven (author)
Similar to native cardiovascular tissues, the mechanical properties of engineered cardiovascular constructs depend on the composition and quality of the extracellular matrix, which is a net result of matrix remodeling processes within the tissue. To improve tissue remodeling, and hence tissue mechanical properties, various mechanical...
article 2009
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van den Ende, D.A. (author), Bos, B. (author), Groen, W.A. (author), Dortmans, L.M.J.G. (author), TNO Industrie en Techniek (author)
We report an investigation into factors limiting the functional lifetime of multilayer piezoceramic actuators. The study consists of a combination of lifetime experiments by means of an accelerated lifetime test, inspection of the actuator microstructure at different stages of the accelerated lifetime test, and numerical simulation of the...
article 2009
document
TNO Kwaliteit van Leven (author), Bastiaansen-Jenniskens, Y.M. (author), Koevoet, W. (author), de Bart, A.C.W. (author), Zuurmond, A.M. (author), Bank, R.A. (author), Verhaar, J.A.N. (author), de Groot, J. (author), van Osch, G.J.V.M. (author)
Transforming growth factor beta (TGFbeta) is often used in cartilage tissue engineering to increase matrix formation by cells with various phenotypes. However, adverse effects of TGFbeta, such as extensive cross-linking in cultured fibroblasts, have also been reported. Our goal was to study effects of TGFbeta on collagen cross-linking and...
article 2008
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Visser, B. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
A review of the literature on the pathophysiology of upper extremity muscle disorders (UEMDs) was performed. An overview is given of clinical findings and hypotheses on the pathogenesis of UEMDs. The literature indicates that disorders of muscle cells and limitations of the local circulation underlie UEMDs. However, these disorders identified do...
article 2006
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Fässler, C. (author), Arrigoni, E. (author), Venema, K. (author), Hafner, V. (author), Brouns, F. (author), Amadò, R. (author), TNO Kwaliteit van Leven (author)
Background: Resistant starch (RS) is known for potential health benefits in the human colon. To investigate these positive effects it is important to be able to predict the amount, and the structure of starch reaching the large intestine. Aim of the study: The aim of this study was to compare two different in vitro models simulating the...
article 2006
document
Nelson, G. (author), Kozlova-Zwinderman, O. (author), Collis, A.J. (author), Knight, M.R. (author), Fincham, J.R.S. (author), Stanger, C.P. (author), Renwick, A. (author), Hessing, J.G.M. (author), Punt, P.J. (author), van den Hondel, C.A.M.J.J. (author), Read, N.D. (author), TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author)
Calcium signalling is little understood in filamentous fungi largely because easy and routine methods for calcium measurement in living hyphae have previously been unavailable. We have developed the recombinant aequorin method for this purpose. High levels of aequorin expression were obtained in Neurospora crassa, Aspergillus niger and...
article 2004
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Zhu, Q. (author), de With, G. (author), Dortmans, L.J.M.G. (author), Feenstra, F. (author)
The purpose of this study is to investigate the subcritical crack growth (SCG) behavior of alumina-glass dental composites. Alumina-glass composites were fabricated by infiltrating molten glass to porous alumina preforms. Rectangular bars of the composite were subject to dynamic loading in air, with stressing rates ranging from 0.01 MPa/s to 2...
article 2003
document
Verver, M.M. (author), van Hoof, J.F.A.M. (author), Oomens, C.W.J. (author), van de Wouw, N. (author), Wismans, J.S.H.M. (author)
Objective. This paper describes the prediction of spinal forces in car occupants during vertical vibrations using a numerical multi-body occupant model. Background. An increasing part of the population is exposed to whole body vibrations in vehicles. In literature, vertical vibrations and low back pain are often related to each other. The cause...
article 2003
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Kardinaal, A.F.M. (author), Hoorneman, G. (author), Väänänen, K. (author), Charles, P. (author), Ando, S. (author), Maggiolini, M. (author), Charzewska, J. (author), Rotily, M. (author), Deloraine, A. (author), Heikkinen, J. (author), Juvin, R. (author), Schaafsma, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Bone mass and bone geometry are considered to have independent effects on bone strength. The purpose of this study was to obtain data on bone mass and geometry in young female populations and how they are influenced by body size and lifestyle factors. In a cross-sectional, observational study in six European countries, 1116 healthy Caucasian...
article 2000
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Bank, R.A. (author), Robins, S.P. (author), Wijmenga, C. (author), Breslau-Siderius, L.J. (author), Bardoel, A.F.J. (author), van der Sluijs, H.A. (author), Pruijs, H.E.H. (author), Tekoppele, J.M. (author)
Bruck syndrome is characterized by the presence of osteoporosis, joint contractures, fragile bones, and short stature. We report that lysine residues within the telopeptides of collagen type I in bone are underhydroxylated, leading to aberrant crosslinking, but that the lysine residues in the triple helix are normally modified. In contrast to...
article 1999
document
Happee, R. (author), van der Helm, F.C.T. (author), TNO Wegtransportmiddelen (author)
Fast goal directed arm movements in the sagittal plane were analyzed with a three-dimensional shoulder model with 95 muscle elements. Dynamics of the muscle elements were described by a third-order nonlinear muscle model. Muscle forces and activation were estimated using the method of inverse muscular dynamics, an optimization scheme which uses...
article 1995
Searched for: subject%3A%22Mechanical%255C%2Bstress%22
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