نتایج جستجو برای: mechanical stability

تعداد نتایج: 524892  

Journal: :Arteriosclerosis, thrombosis, and vascular biology 2011
Susan T Lord

Fibrin structure and stability have been linked to many thrombotic diseases, including venous thromboembolism. Analysis of the molecular mechanisms that affect fibrin structure and stability became possible when the crystal structure of fibrinogen was solved. Biochemical studies of natural and recombinant variant fibrinogens have examined the interactions that mediate the conversion of soluble ...

Journal: :Journal of the Japan Institute of Metals 2007

Journal: :Journal of Thermal Spray Technology 2021

Abstract Loss of mechanical integrity due to thermal aging and subsequent spallation the ceramic top layer is one dominant failure mechanisms in barrier coating systems. In order predict avoid such failure, a strain-based lifetime assessment model presented for novel double-layer system. The investigated system consists gadolinium zirconate on yttria-stabilized zirconia prepared by atmospheric ...

The mechanical properties of microscopic particles have been a heated research object for it takes the deformation of micro-beads in the microfluidic environment into account. Sufficient knowledge on mechanical properties of micro-beads would lead to better device design and application for cell mechanics, tissue engineering, etc. The physical properties of alginate beads were examined both in ...

This study focuses on achieving high stiffness/strength and good FR characteristic of nylon 66/MCA/NC nanocomposites, prepared via melt compounding by twin screw extruder. A synergistic effect of flame retardant systems based on melamine cyanurate and zinc borate on the flammability and mechanical behaviours of crysnanoclay reinforced nylon 66 nanocomposites have been reported. Mechanical test ...

Journal: :journal of artificial intelligence in electrical engineering 2012
meisam mahdavi ali nazari vahid hosseinnezhad amin safari

in this paper power system stability enhancement through static synchronous compensator (statcom)based controller is investigated. the potential of the statcom supplementary controllers to enhance thedynamic stability is evaluated. the design problem of statcom based damping controller is formulatedas an optimization problem according to the eigenvalue based objective function that is solved by...

Journal: :journal of dentistry, tehran university of medical sciences 0
hamidreza barikani dental implant research center, tehran university of medical sciences tehran, iran. shadab rashtak dental implant research center, tehran university of medical sciences tehran, iran. soolmaz akbari dental implant research center, tehran university of medical sciences tehran, iran. samareh badri dental implant research center, tehran university of medical sciences tehran, iran. niloufar daneshparvar dental student, tehran university of medical sciences tehran, iran. amirreza rokn associated professor, dental implant research center and periodontics department, tehran university of medical sciences tehran, iran.

the focus of this paper is to evaluate the influence of mechanical characteristics of the implant on primary stability in different bone types, based on resonance frequency analysis (rfa).a number of 60 nobel biocare replace select tiunit tapered implants of two different lengths (10 mm and 13 mm) and three different widths as 3.4 mm (narrow platform (np)), 4.3 mm (regular platform (rp)) and 5 ...

2015
Natalie L. Stephenson Johanna M. Avis

The Notch signalling pathway is fundamental to cell differentiation in developing and self-renewing tissues. Notch is activated upon ligand-induced conformational change of the Notch negative regulatory region (NRR), unmasking a key proteolytic site (S2) and facilitating downstream events. The favoured model requires endocytosis of a tightly bound ligand to transmit force to the NRR region, suf...

2009
S. Pingel Y. Zemen O. Frank T. Geipel J. Berghold

The PV market is still expanding causing the situation in PV industry becoming more and more complex. Different cell types emerge on the market provided by a growing number of cell suppliers. Due to silicon shortage in the past solar cells were getting significantly thinner within the past few years. All these parameters have a potential impact on the mechanical stability of a solar panel. This...

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