The piezoelectric photo-thermal (PPT) and the surface photo-voltage (SPV) spectra of GaAs/AlAs short-period superlattices (SPS)-confined GaAs single-quantum well (SQW) were measured. The electron nonradiative transitions within GaAs-SQW and subband of SPS were observed in the room-temperature...

We present a new exergoeconomic approach to optimize energy systems. After tracing the energy evolution and degradation within the system, a binary subsystem model is proposed and optimization strategies are introduced. The method is applied to optimization of the CGAM problem.

The present numerical simulation investigates the effect of inserting metal foams in receiver tube of parabolic trough collector on heat transfer. The effects of layout (top/bottom), geometrical parameter (H), and porosity (φ) of metal foams on the flow resistant, heat transfer and...

It appears that diabetes and its complications affect patients’ valuation of health states. Hence, the EQ-5D-3L health-state values based on the general population may underestimate the utility of health interventions for T2DM. </AbstractSection> Copyright Springer International Publishing Switzerland 2014

The band structures of symmetrical Fibonacci sequences (SFS) composed of positive and negative refractive index materials are studied with a transfer matrix method. A new type of omnidirectional zero-<InlineEquation ID="Equ2"> <EquationSource Format="TEX">$\bar{n}$</EquationSource> </InlineEquation> gaps is found in the SFS. In contrast to the Bragg gaps, such an omnidirectional...</equationsource></inlineequation>