In a previous paper we presented a typical set of galactic rotation curves associated with the linear gravitational potential of the conformal invariant fourth order theory of gravity which has recently been advanced by Mannheim and Kazanas as a candidate alternative to the standard second order NewtonEinstein theory. Reasonable agreement with data was obtained for four representative galaxies ...

In addition to bulk thermodynamic experiments, scattering measurements can be used to probe microscopic fluctuations at length scales of the order of the probe wavelength λ. In a typical set up, a beam of wavevector ki is incident upon the sample and the scattered intensity is measured at wavevector ks = ki+q. For elastic scattering, |ki| = |ks| ≡ k, and q ≡ |q| = 2k sin θ, where θ is the angle...

In the emergency repair of electric power caused by sudden natural disasters, reliability and stability supply vehicles largely determine speed efficiency restoring supply. Based on performance test study 18 diesel-powered in Guangzhou Power Supply Company Limited, typical defects equipment causes faults are analyzed. It provides technical support for standards maintenance guidance equipment, g...