منابع مشابه
Fascinated with the aerodynamics oF Flight
Inside this Issue 2 Exploring Shock-Induced Chemistry on Ultrafast Timescales 3 Toward Exascale Simulation of Re-Entry Flight Environment 4 Probing Inertial Confinement Fusion Plasmas 5 Shock Physics 6 Inertial Confinement Fusion 7 Modeling Polar Direct Drive Implosions on NIF 8 Developing Improved Physics Models for Predictive Simulations 9 Developing X-ray Sources for Extreme Radiation Enviro...
متن کاملGravitational Lensing By Spiral Galaxies
We study gravitational lensing by spiral galaxies, using realistic models consisting of halo, disk, and bulge components combined to produce a flat rotation curve. Proper dynamical normalization of the models is critical because a disk requires less mass than a spherical halo to produce the same rotation curve—a face-on Mestel disk has a lensing cross section only 41% as large as a singular iso...
متن کاملSpiral length design
On the circular curve, lateral acceleration affects comfort. On the spiral, both lateral acceleration and jerk affect comfort. The determination of maximum curving speed on the basis of lateral acceleration only is not critical because the lateral acceleration is proportional to the square of speed whereas jerk is proportional to cubic power of speed. The maximum speed on a curve is thus signi...
متن کاملAcute gangrenous appendicitis-diagnosis by spiral CT
Material-method: twenty-two patients, aged 22-67 are presented. They were admitted in the outpatient department of our hospital with clinical and laboratory findings suggestive of acute appendicitis. All patients were examined by CT after the oral administration of contrast material. The imaging findings were confirmed intraoperatively. Results: a common imaging finding in all patients that wer...
متن کاملInterstellar Turbulence Driving by Galactic Spiral Shocks
Spiral shocks are potentially a major source of turbulence in the interstellar medium. To address this problem quantitatively, we use numerical simulations to investigate gas flow across spiral arms in vertically stratified, self-gravitating, magnetized models of galactic disks. Our models are isothermal, quasi-axisymmetric, and local in the quasi-radial direction while global in the vertical d...
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ژورنال
عنوان ژورنال: TRENDS IN THE SCIENCES
سال: 2005
ISSN: 1884-7080,1342-3363
DOI: 10.5363/tits.10.3_66