نتایج جستجو برای: breaking force

تعداد نتایج: 231534  

F. Rahimzadeh Rofooei and A. Malakan,

Tuned Liquid Dampers (TLD) are among passive control devices that have been used to suppress the vibration of structures in recent years. These structures must be adequately presentable as an equivalent single degree of freedom system with long fundamental period. The TLD, located at the top floors of the structure, can dissipate the external input energy into the system through the sloshing ef...

2006
B. SCHOLZ H. HAMANN

As furnished cages will be forbidden in Germany after 2011, research has been stimulated to develop small group housing systems and test their suitability particularly in respect to welfare and health issues. The objective of the present investigation was to assess bone breaking strength, keel bone deformity and egg quality (shell breaking strength) of Lohmann Silver (LS) and Lohmann Tradition ...

2009
Yusuke Uchiyama James C. McWilliams Juan M. Restrepo

[1] We examine wave-current interactions in littoral current shear instabilities above a single-barred beach using a fully coupled wave and barotropic current model based on the multiscale asymptotic theory derived by McWilliams et al. (2004). This Eulerian waveaveraged model captures wave effects on currents (WEC) in a manner that leads to simple interpretations. The dynamically conservative W...

A. Karami M. Rahemi S. Eshghi

Although, grapevines do not have a high chilling requirement, its fulfillment is critical for normal development of the vines. In tropical and subtropical regions such as Farrashband, in the south of Iran, there is no adequate winter chilling to release bud dormancy in grapevines. So it is necessary to consider the effect of chemical dormancy–breaking agents on bud dormancy. In the present rese...

اردشیر اسدی خشویی, , عباس همت, ,

To increase mechanized cotton planting in areas with saline irrigation water and crust forming soil in Isfahan Province, assessment of seeders in flatland planting method with or without crust breaking is essential. An experiment was conducted at the Kabootarabad Research Station of Isfahan Research Center to compare the performance parameters of planting equipment in a clay loam soil. Four pla...

Journal: :The European physical journal. E, Soft matter 2012
Thomas D Montenegro-Johnson Andrew A Smith David J Smith Daniel Loghin John R Blake

Cilia and flagella are actively bending slender organelles, performing functions such as motility, feeding and embryonic symmetry breaking. We review the mechanics of viscous-dominated microscale flow, including time-reversal symmetry, drag anisotropy of slender bodies, and wall effects. We focus on the fundamental force singularity, higher-order multipoles, and the method of images, providing ...

Journal: :The Journal of chemical physics 2016
Stephen A Barr Gary S Kedziora Allison M Ecker James C Moller Rajiv J Berry Tim D Breitzman

A novel method to combine quantum mechanics (QM) and molecular mechanics has been developed to accurately and efficiently account for covalent bond breaking in polymer systems under high strain without the use of predetermined break locations. Use of this method will provide a better fundamental understanding of the mechano-chemical origins of fracture in thermosets. Since classical force field...

1999
E. J. Ferrer V. P. Gusynin

The catalysis of chiral symmetry breaking by an applied constant and uniform magnetic field in the four-dimensional Nambu-Jona Lasinio model is investigated in the presence of boundaries along the third axis. It is shown that in the case of periodic boundary conditions for fermions, the magnetic field breaks the chiral symmetry, generating a dynamical mass even at the weakest attractive interac...

Journal: :Entropy 2004
Jack Denur

The randomness of Brownian motion at thermodynamic equilibrium can be spontaneously broken by velocity-dependence of fluctuations, i.e., by dependence of values or probability distributions of fluctuating properties on Brownian-motional velocity. Such randomness-breaking can spontaneously obtain via interaction between Brownian-motional Doppler effects — which manifest the required velocity-dep...

Journal: :Biomaterials 2009
Christine R Carlisle Corentin Coulais Manoj Namboothiry David L Carroll Roy R Hantgan Martin Guthold

We used a combined atomic force microscopic (AFM)/fluorescence microscopic technique to study the mechanical properties of individual, electrospun fibrinogen fibers in aqueous buffer. Fibers (average diameter 208 nm) were suspended over 12 microm-wide grooves in a striated, transparent substrate. The AFM, situated above the sample, was used to laterally stretch the fibers and to measure the app...

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