نتایج جستجو برای: separation angle
تعداد نتایج: 250711 فیلتر نتایج به سال:
this paper presents an exact analytical solution for two-dimensional conductive heat transfer in spherical composite pressure vessels .the vessels are in spherical shape and fibers are winded in circumferential direction. the analytical solution is obtained under the general boundary conditions which consist of convection, conduction and radiation inside/outside of vessel. the heat transfer equ...
We formulate angle decomposition, during and after wavefield extrapolation, independent of the choice of coordinate systems. The key idea is to describe the source-receiver separation during wavefield extrapolation as a vector quantity. This formulation links the reflection angle to the magnitude of the offset vector, thus reducing the cost and storage associated with angle decomposition. This ...
OBJECTIVE Reconstruction of traumatic ventral hernias often requires additional techniques to the abdominal wall component separation, such as the use of interpositional reconstruction with an acellular dermal matrix or other mesh to bridge the defect. METHODS We have developed a new value termed the "Component Separation Index" to evaluate ventral hernia defects. Choosing a fixed point on a ...
We measured two- and three-line spatial interval and alignment thresholds for a wide range of separations and eccentricities. In order to avoid confounding the role of separation and eccentricity, the test lines were presented on iso-eccentric arcs, with radii between 0.625 and 10 deg. The iso-eccentric paradigm allows separation to be varied over a large range while holding eccentricity consta...
Wind-tunnel experimentswere conducted on a 47-deg sweep, scaled 1303unmanned air vehiclemodel to assess the performance of an innovative windward-surface plasma actuator design for flight control at low angles of attack. Control was implemented by altering the flow past an aft separation ramp on the windward side using a single dielectric barrier discharge plasma actuator. The influence of ramp...
The structure of a commercial sulfonated poly(ether ether ketone) (sPEEK) membrane was analyzed by Small-Angle X-Ray Scattering (SAXS) for different water uptakes obtained after immersion in liquid water at various temperatures. For low membrane swelling, the SAXS profile displays only a wide-angle peak in the 0.2-0.3 Å(-1) region. As the membrane swells, two supplementary correlation peaks ari...
the purpose of this study was to compare the presence or absence of uv irradiation on the separation performance and morphology of the tio2-assembled thin film membranes (in different concentrations). furthermore, an attempt was made to show and compare the effect of the presence of tio2 nanoparticles in aqueous and organic phases during the interfacial polymerization process. sem, zeta potenti...
In this work, a facile and inexpensive one-step sonochemistry irradiation method was developed for the fabrication of SiO2 nanoparticles functionalized with octadecyltrimethoxysilane and their in situ incorporation into cotton fabrics. The double sides of as-prepared fabrics show both superhydrophobic and superoleophilic properties simultaneously with a high water contact angle of 159 ± 1° and ...
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