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1.
The purpose of this Note is the study of the structure and fluxional behavior of the complex [{Ru(CO)2(η5C5H5)}3(η1:η1:η2:-CC)]+, using density functional methods. The molecular geometry of this complex will be optimized, the transition state (TS) of the fluxional process will be determined and the origin of the energy barrier will be analyzed. 相似文献
2.
The Near Surface Mounted (NSM) technique has been used in recent years for the strengthening of reinforced concrete beams. It involves the insertion of strips or rods of polymers reinforced with carbon fiber (CFRP) in the groove made previously in the concrete cover of corresponding surfaces, filled with epoxy adhesive for fixation. In order to characterize the bond behavior of the laminate and rods to concrete, an experimental work of pullout-bending tests was carried out. The pullout force at the laminate and the slip at the free and loaded end were measured. The influences of the concrete strength, the strength of the bond, and bond length on the bonding behavior between the three materials concrete, epoxy adhesive and CFRP were analyzed. 相似文献
3.
In this work we present the development of a new solar cell prototype in order to improve photovoltaic efficiency. In this
model we show that the material can have three successive incident ray absorptions instead of two currently, by varying the
incidence angle, the aperture between the summit of two neighbouring pyramids and their height. This study concerns in particular
the photovoltaic parameters such as the spectral response. This model was checked for angles varying between 54 and 60° and
for pyramid heights between 5 and 10 μm. For these values of incidence angle, the apertures between the summits of two neighbouring
pyramids varied respectively from 14.54 to 11.54 μm for a pyramid height of 10 μm. 相似文献
4.
5.
Instead of providing separate solutions for each individual network, a unified theory is desirable to cover the study of a
class of networks. Cartesian product graphs provide a common framework to investigate the performance of several individual
networks. This paper addresses communication capabilities of product networks. Communication cost is generally characterized
by the diameter, the average distance, the total number of paths, the traffic intensity, the saturation level, the queue length
in each node, the communication delay and the network throughput. The diameter and average distance of product networks have
been studied. However, no work has addressed the remaining measures for product networks. This paper presents a unified theory
to evaluate the traffic intensity and the saturation level of product networks. We have theoretically computed the traffic
intensity and the saturation level. Intensive simulations have been conducted to validate the analytical results and to compute
the other measures for different workloads, different networks, and different network sizes. Examples of product networks
that have been investigated are multidimensional meshes, multidimensional toruses, and r‐ary n‐cube networks. We have also shown that the structure (geometry) of a network is a primary factor for network high performance.
For meshes and toruses, square networks present an optimal structure. While in case of an r‐ary n‐cubes, networks with higher radix outperform those with smaller radix. In particular, cross‐cubes (4‐ary n‐cube) are shown to perform better than binary cubes.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
6.
A Calculation of the Culler-shalen Seminorms Associated to Small Seifert Dehn Fillings 总被引:1,自引:0,他引:1
We determine the relationship between the multiplicities ofthe zeros of certain rational functions defined on the SL2(C)and PSL2C character varieties of knot exteriors. This leadsto a formula for the CullerShalen seminorms associatedto small Seifert Dehn fillings of such manifolds. 2000 MathematicsSubject Classification: 57M05, 57M27, 57R65. 相似文献
7.
In this paper, we study fractional differential inclusions with Dirichlet boundary conditions. We prove the existence of a solution under both convexity and nonconvexity conditions on the multi-valued right-hand side. The proofs rely on nonlinear alternative Leray–Schauder type, Bressan–Colombo selection theorem and Covitz and Nadler’s fixed point theorem for multi-valued contractions. The compactness of the set solutions and relaxation results is also established. In the last section we consider the fractional boundary value problem with infinite delay. 相似文献
8.
This work describes an approach for the development of two bacteria biosensors based on surface plasmon resonance (SPR) technique. The first biosensor was based on functionalized gold substrate and the second one on immobilized gold nanoparticles. For the first biosensor, the gold substrate was functionalized with acid-thiol using the self-assembled monolayer technique, while the second one was functionalized with gold nanoparticles immobilized on modified gold substrate. A polyclonal anti-Escherichia coli antibody was immobilized for specific (E. coli) and non-specific (Lactobacillus) bacteria detection. Detection limit with a good reproducibility of 104 and 103 cfu mL−1 of E. coli bacteria has been obtained for the first biosensor and for the second one respectively. A refractive index variation below 5 × 10−3 due to bacteria adsorption is able to be detected. The refractive index of the multilayer structure and of the E. coli bacteria layer was estimated with a modeling software. 相似文献
9.
10.
A. H. Abou El Ela A. Abdelghani H. H. A. Labib 《Applied Physics A: Materials Science & Processing》1982,27(3):161-165
The temperature dependence of the electrical conductivity and thermoelectric power of liquid selenium with thallium and indium additives have been studied. Large variations appear in the electrical conductivity and thermoelectric power, where Tl and In additives favourp-type conduction. 相似文献