We report time-resolved spectroscopic observations of the SU Ursae Majoris dwarf nova, YZ Cnc, for 2 nights over 11 hrs during its 2002 January superoutburst. The spectra only show absorption-line profiles in the first day. But the lines display blue and red troughs, with “W” profiles in the second day. The radial velocity curve of the absorption troughs and emission peaks of Hβ has an amplitud...

ABSTRACT Primordial black holes in the asteroid-mass window, which might constitute all dark matter, can be captured by stars when they traverse them at low enough velocity. After being placed on a bound orbit during star formation, repeatedly cross if happens to highly eccentric, slow down dynamical friction, and end up stellar core. The rate of these captures is highest haloes high matter den...

In this paper, the dynamic analysis of the composite sandwich truncated conical shells (STCS) with various boundary conditions subjected to the low velocity impact was studied analytically, based on the higher order sandwich panel theory. The impact was assumed to occur normally over the top face-sheet, and the contact force history was predicted using two solution models of the motion which we...

Acute inflammatory responses are linked to a transient increase in risk of a cardiovascular event, and this risk may be mediated by a concomitant reduction in vascular function. Humans experience an acute inflammatory response as a consequence of infection, injury, or muscle damage. We measured macrovascular function before and after eccentric exercise to determine whether muscle damage from un...

Most impact tests are carried out on specimens with specific stacking sequence and dimensions to meet standard and experimental limitations. The damaged areas and the resulted reduction in the strength values of specimens may not agree very well with those of real application. In this paper an attempt is made to study the variation in the size of damaged areas due to varying the dimension of te...

An effort is made to gain insight on the effect of carbon nanotubes (CNTs) on the impact response of carbon fiber reinforced composites (CFRs) under low velocity impact. Certain amount of CNTs could lead improvements in mechanical properties of composites. In the present investigation, ABAQUS/Explicit finite element code (FEM) is employed to investigate various damages modes of nano composites ...

INTRODUCTION Occupational injuries of the shoulder joint are of growing concern due to work time loss, as well as increases in medical and restitution expenses [1]. The assessment of shoulder musculature strength may assist in decision making regarding the effects of interventions, as well as possible readiness to return to work. Current practices related to the use of strength scores for such ...