The blades of wind turbines are the most important parts in producing power output. In this study, a section of a 660 KW wind turbine blade will be installed in Iran in near future was tested in a wind tunnel. In addition to steady tests, various unsteady tests including the effects of reduced frequency, mean angle of attack, and amplitudes were carried out. The preliminary results show strong ...

We find the origin of logarithmic correction to the absorption cross section by studying the spin–dependent wave equation in three-dimensional anti-de Sitter space(AdS3). It turns out that all test fields(ψν=1) coupled to (1,1), (2,0), (0,2) operator on the boundary at infinity receive logarithmic corrections. These are a minimally coupled scalar and gauge bosons. It turns out that these correc...

Processes with the t-channel singularity in the physical region: finite beam sizes make cross sections finite Abstract It is known that some high-energy processes have a t-channel singularity in the physical region. In this paper we show that this singularity is regularized if one takes into account the finite sizes of the colliding beams, i.e. the realistic situation which takes place at high–...

In this paper, the investigational results for a robust adaptive vibration control of a translating tensioned beam with a varying traveling speed are presented. The dynamics of the moving beam are modeled as an Euler-Bernoulli beam, in which the tension applied to the beam is given as a nonlinear spatiotemporally varying function. The moving beam span is divided into two parts, i.e., a controll...

We measure the absolute absorption cross section of molecules using a matter-wave interferometer. A nanostructured density distribution is imprinted onto a dilute molecular beam through quantum interference. As the beam crosses the light field of a probe laser some molecules will absorb a single photon. These absorption events impart a momentum recoil which shifts the position of the molecule r...

Plentiful studies are reported on the semi-rigid behavior of joints between open section H shaped beam and column, but researches focusing on the semi-rigid performance of joints between square/rectangular hollow section (SHS/RHS) column-to-H shaped beam is to lag a lot. Most studies shows that when the SHS/RHS column connecting the H beam without internal diaphragm, the joints behavior is semi...

Data taken by the SLD Collaboration at the Stanford Linear Collider on e+ e-> Z0 obtained with a polarized electron beam have enabled many incisive tests of the electroweak sector of the standard model to be performed. We discuss our recent determinations of sinθw, derived from the total cross section asymmetry, and the quark final state asymmetries, As, Ac, Ab and branching ratios, Rc and Rb. ...