Abstract In order to study the seismic performance of steel tube bundle composite shear wall with different constructions. Based on failure tests three specimens without end, studs and stiffener, a feasible numerical model is established by ABAQUS. The hysteresis curve energy dissipation coefficient, skeleton ductility were further analyses varying axial compression ratio spacing internal diaph...

In this study, it was attempted to design a high-performance single-walled carbon nanotube (SWCNT) bundle interconnects in a full adder. For this purpose, the circuit performance was investigated using simulation in HSPICE software and considering the technology of 32-nm. Next, the effects of geometric parameters including the diameter of a nanotube, distance between nanotubes in a bundle, and ...

Using ab initio and parametrized techniques, we determine the equilibrium structure of an ordered “bundle” of (10,10) carbon nanotubes. Because of small intertube interaction and lattice frustration, we predict a very soft libration mode to occur at n ø 12 cm21. This mode is predicted to disappear above the orientational melting temperature which marks the onset of free tube rotations about the...

Risk factors for pneumothorax include male sex, height, smoking and underlying lung conditions. The reported causes of bilateral trauma, tumor, iatrogenic causes. Complications Respiratory failure or arrest, Pneumoperitoneum, Pyopneumothorax, Pneumohemothorax, Pneumopericardium, Bronchopulmonary fistula, damage to the neurovascular bundle during tube thoracostomy pain skin infection at site tho...

Exploiting minmax characterizations for nonlinear and nonoverdamped eigenvalue problems, we prove the existence of a countable set of eigenvalues converging to ∞ and inclusion theorems for a rational spectral problem governing mechanical vibrations of a tube bundle immersed in an incompressible viscous fluid. The paper demonstrates that the variational characterization of eigenvalues is a power...

In this paper we apply a minmax characterization for nonoverdamped nonlinear eigenvalue problems to a rational eigenproblem governing mechanical vibrations of a tube bundle immersed in an inviscid compressible fluid. This eigenproblem is nonstandard in two respects: it depends rationally on the eigenparameter, and it involves non-local boundary conditions. Comparison results are proved comparin...

Objectives This retrospective study was undertaken to see whether implementation of the evidence based practices as a bundle would influence compliance and reduce the rates of VAP without necessary resorting to more expensive interventions such as subglottic endotracheal (ET) tube suctioning or for example silver-impregnated ET tubes. We utilized easily collectable data to rapidly assess whethe...