نتایج جستجو برای: specific gravity

تعداد نتایج: 1094093  

2005
C. R. Patra B. M. Das M. Bhoi E. C. Shin

Results are presented for laboratory model tests conducted to determine the ultimate bearing capacity of an eccentrically loaded strip foundation supported by geogridreinforced sand. Only one type of sand at one relative density of compaction and one type of geogrid were used for the tests. The depth of the foundation was varied from zero to B (width of foundation). Based on the laboratory test...

Journal: :Dalton transactions 2015
Hyun Ju Jooheon Kim

The thermoelectric properties of Bi2Te3 nanowire/graphene composites prepared at different sintering temperatures have been investigated. The as-synthesized ultrathin Bi2Te3 nanowires are uniformly distributed between the graphene layers, leading to the formation of Bi2Te3 nanowire/graphene layer-by-layer hybrid structures. The electrical conductivity of the as-sintered composites increases dra...

2004
R. K. Ranjan S. Kumar

The paper reports an investigation into the forging of solid powder circular disc with large slenderness ratio, between two flat dies. The deformation pattern during the operation is influenced by many factors, which interact with each other in a complex manner. The decisive factors are the interfacial conditions, initial relative density of the preform and the geometry of the preform. An attem...

Journal: :Ultramicroscopy 2006
J Verbeeck S Van Aert G Bertoni

An extension to model-based electron energy loss spectroscopy (EELS) quantification is reported to improve the possibility of modelling fine structure changes in electron energy loss spectra. An equalisation function is used in the energy loss near edge structure (ELNES) region to model the differences between a single atom differential cross section and the cross section for an atom in a cryst...

2011
HAMED HATAMI Laura Eslava

In this lecture we are going to address a question related to expansion. We choose an element in a product space and change each coordinate with a small probability. How large is the probability that starting in a given small set A, the new point lands in another small set B? We are going to prove a lower bound on this probability that depends on the relative densities of such sets. To this end...

Journal: :The Central African journal of medicine 2008
T L Magwali

It is estim ated that, nearly five b illion episodes o f clinical m alaria occur w orldw ide each year. The disease causes about three m illion deaths annually w ith A frica suffering 90% o f this bu rden .'it is also estim ated that 25 m illion w om en fall p regnant in the m alaria-endem ic areas o f A frica each year.2 M ost o f the deaths due to m alaria in A frica are in p regnant w om en ...

2016
Adam N H Smith Marti J Anderson

Many large, fishery-targeted predatory species have attained very high relative densities as a direct result of protection by no-take marine reserves. Indirect effects, via interactions with targeted species, may also occur for species that are not themselves targeted by fishing. In some temperate rocky reef ecosystems, indirect effects have caused profound changes in community structure, notab...

Journal: :Diseases of aquatic organisms 2011
Trude Vrålstad Stein I Johnsen Rosa Ferreira Fristad Lennart Edsman David Strand

Noble crayfish Astacus astacus is threatened in Europe due to invasive crayfish carrying the crayfish plague agent Aphanomyces astaci. Norway is among the last countries in which the introduction of non-indigenous crayfish has been limited through strict legislation practices. However, North American signal crayfish Pacifastacus leniusculus were recently discovered in a water-course that has be...

2005
Fei Wang Jin Min Yang

In this work we perform some studies related to dark energy. Firstly, we propose a dynamical approach to explain the dark energy content of the universe. We assume that a massless scalar field couples to the Hubble parameter with some Planck-mass suppressed interactions. This scalar field developes a Hubble parameter-dependent (thus time-dependent) vacum expectation value, which renders a time-...

2015
De-Gang Zhao Yong Li Xue-Feng Zhu

We have investigated the Lamb wave propagation in cellular metamaterial plates constructed by bending-dominated and stretch-dominated unit-cells with the stiffness differed by orders of magnitude at an ultralow density. The simulation results show that ultralight metamaterial plates with textured stubs deposited on the surface can support strong local resonances for both symmetric and anti-symm...

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