منابع مشابه
Accidental Limit State of Submarine Pipeline: Trawl Gears Pull-Over Loads and Effect of Free Span
Submarine pipelines failures lead to oil spills in water and may even lead to explosions with heavy financial and environmental damages. Trawl gear is one of the main factors in the failure of the submarine pipelines. In this paper, sensitivity analysis is performed on influence of height and span length alternations on the response of pipeline against the traction caused by trawling pull-over ...
متن کاملOver the limit: the association among health, race and debt.
This research responds to the call for more research on the conceptualization and measurement of socio-economic status that moves beyond merely considering education, occupation and income variables. Credit card usage and credit card debt is a growing phenomenon in developed countries. Using data from a 1997 representative sample of more than 900 adults in Ohio, we explored how credit card debt...
متن کاملReaching the betz limit experimentally and numerically
The Betz theory expresses that no horizontal axis wind turbine can extract more than 16/27 (59.3%) of the kinetic energy of the wind. The factor 16/27 (0.593) is known as the Betz limit. Horizontal Axis wind turbine designers try to improve the power performance to reach the Betz limit. Modern operational wind turbines achieve at peak 75% to 80% of the Betz limit. In 1919, Albert Betz used an a...
متن کاملCellular Automata Reversible Over Limit Set
Reversibility is a widely accepted principle in physics, according to which, the microscopic laws governing the dynamics of the physical nature can hypothetically be reversed to let the system run backward in time. Reversible cellular automata (CA) have been extensively studied as convenient tools for modeling physical systems, whenever capturing the microscopic reversibility is desirable (see ...
متن کاملThe Structure of Limit Groups over Hyperbolic Groups
Let Γ be a torsion-free hyperbolic group. We study Γ–limit groups which, unlike the fundamental case in which Γ is free, may not be finitely presentable or geometrically tractable. We define model Γ–limit groups, which always have good geometric properties (in particular, they are always relatively hyperbolic). Given a strict resolution of an arbitrary Γ–limit group L, we canonically construct ...
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ژورنال
عنوان ژورنال: BMJ
سال: 2004
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.329.7461.310