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نتایج جستجو برای Hoop stress

تعداد نتایج: 235608  
2003
Michael D. Graham,

Viscoelasticity can dramatically exacerbate free surface flow instabilities. It is shown here that this destabilization arises, at least in part, from the combination of large tangential tension and curvature along a concave free surface. Tension and curvature generically lead to an unstable stress gradient at the free surface; a perturbation that locally thickens a fluid layer leads to a local...

2016
R. A. Borzooei, H. R. Varasteh,

In this paper, by considering the notion of hyper hoop-algebras, we define the concepts of (strong) regular relations on hyper hoop-algebras and investigate some properties of them. Then we construct a quotient (hyper) hoop-algebra by a (strong)regular relation on hyper hoop-algebras. Finally, we define the notion of maximal filter and we investigate the relation between quotient simple hyper h...

2016
R. A. Borzooei, H. R. Varasteh, K. Borna,

In this paper, we investigate some results on hoop algebras and hyper hoop-algebras. We construct a hoop and a hyper hoop on any countable set. Then using the notion of the fundamental relation we define the fundamental hoop and we show that any hoop is a fundamental hoop and then we construct a fundamental hoop on any non-empty countable set.

Journal: :The Journal of bone and joint surgery. British volume 1992
M A Mont, D C Maar, K A Krackow, D S Hungerford,

Retrospective review of 730 consecutive primary uncemented and cemented total hip arthroplasties revealed 19 intra-operative hoop-stress fractures of the femoral neck. These were incomplete, linear, and minimally displaced. Management was by cerclage wiring (12), bone graft and cerclage (two), further impaction (two), and the use of cement (three), with no change from our standard postoperative...

2015
Hao Ding, Kun Shang, Hailian Lan, Yanan Lei, Lixing Sheng, Zhilin Liu, Yanjun Zeng,

AIMS The aim of this study is to investigate how the myocardial bridge oppression affects the hoop stress of mural coronary artery. METHODS The "myocardial bridge - coronary artery" simulative device records the hoop stress which is changed by adjusting the external pressure of the simulated coronary artery and the oppression degree of the respectively. RESULTS Simulation experiment in vitr...

Journal: :ACS nano 2013
Khim Karki, Yujie Zhu, Yihang Liu, Chuan-Fu Sun, Liangbing Hu, YuHuang Wang, Chunsheng Wang, John Cumings,

The engineering of hollow nanostructures is a promising approach to addressing instabilities in silicon-based electrodes for lithium-ion batteries. Previous studies showed that a SiOx coating on silicon nanotubes (SiNTs) could function as a constraining layer and enhance capacity retention in electrodes with low mass loading, but we show here that similarly produced electrodes having negligible...

2008
José M. M. Senovilla,

A reformulation of the Hoop Conjecture which avoids the use of any foliations as well as ill-defined notions of “encircled mass” and “circumference of a body” is presented. The new formulation is based on the concept of trapped circle, which is well-defined, geometrically sound, and physically relevant. With the new formulation, the problems of severe compactness in every spatial direction, and...

1994
Jørgen Rasmussen, Morten Weis, Niels Bohr,

A new topology is proposed on the space of holonomy equivalence classes of loops, induced by the topology of the space Σ in which the loops are embedded. The possible role for the new topology in the context of the work by Ashtekar et al. is discussed. In this short paper we introduce a topology τ on the space of holonomy equivalence classes of loops, known in the context of quantum gravity in ...

2001
Chris Kennedy, Jason Merchant, Henriëtte de Swart, Frank Wijnen,

The aim of this article is to elucidate the processes that characterize natural language interpretation. The basic hypothesis is that natural language interpretation can be characterized as an optimization problem. This innovative view on interpretation is shown to account for the crucial role of contextual information while avoiding certain wellknown problems associated with compositionality. ...