Transport model of droplets injected axially or transversely into a plasma jet is presented. The droplets contain a ceramic precursor that precipitates in the vaporizing droplets. Droplet temperature and solute concentration distributions were predicted to estimate precipitation zones based on a homogeneous nucleation hypothesis. Effects of droplet size, injection velocity and injection angle w...

We examine the elastic shear waves generated in a thin pre-stressed elastomer layer that is sandwiched between two relatively thick steel plates and is subjected to an elastic shear wave traveling in one of the steel plates. The elastomer layer has been deformed in uni-axial strain in advance, producing in the layer very large axial and lateral compressive stresses of the order of its bulk modu...

The present work is concerned with a numerical study of the performance of a conical annular centrifugal contractor through the analysis of the flow properties when the apex angle is changed for different imposed axial flows. The calculations revealed the advantage of using conical annular centrifugal contractors compared to the cylindrical annular centrifuges. The study is conducted by a compa...

In the title compound, C(21)H(25)NO(2), the piperidine ring adopts a twisted boat conformation characterized by puckering parameters θ = 89.5 (1) and ϕ = 257.5 (2)°. The phenyl groups are located in equatorial and axial positions on the central piperidine ring, while the methyl group is in an equatorial position. The dihedral angle between the phenyl rings is 49.8 (1)°. An intra-molecular C-H⋯O...

This paper presents the design of a dual-band microstrip antenna with low wide-angle axial-ratio. The antenna is designed for global positioning satellite operations at 1227MHz (L2), 1575 MHz (L1) and 1176 MHz (L5, available after 2007). This antenna has another advantage of a much wider band in both VSWR and 3 dB axial-ratio compared with single-fed GPS antennas. Details of the design, simulat...

We demonstrate that oil immersion lenses with a semi-aperture angle >/= 74 degrees enable 4Pi confocal fluorescence microscopy of type A with 1 photon excitation. The axial sidelobes amount to < 50 % of the main diffraction maximum, implying that lobe induced artifacts can be removed from the image data. The advancement reported herein enables a relative inexpensive implementation of 4Pi micros...

OBJECTIVES To evaluate prospectively the gonioscopic findings and their changes during a 3-year follow-up period in patients with acute central/hemicentral retinal vein occlusions (C/HRVOs). MATERIAL AND METHODS A comprehensive ophthalmological examination of both eyes including static and dynamic gonioscopy as well as ocular biometric measurements was performed in 57 patients with acute C/HR...

Abstract In view of the problem that actual performance axial-flow pump is less than theoretical design value, Taking with a designed flow rate 350L/s as research object. The relationship between impeller head and outlet installation angle was studied. influence different blade angles on external characteristics analyzed. Through analysis corresponding to angles, shaft oil verified, basis for s...

In This paper, a parametric study of compressor performances was performed by streamline curvature method (SLC). Effects of three input parameters in design process, e.g., number of blades, distribution of blade thickness, and blade sweep angels, on the main objective parameters in aerodynamic design, e.g., velocity distribution, efficiency and pressure ratio, has been investigated in the param...