The early universe is modeled through the quantization of a Friedmann-Robertson-Walker model with positive curvature spatial hypersurfaces. In this model, filled by two fluids: radiation and generalized Chaplygin gas. made following prescriptions due to J. A. Wheeler B. DeWitt. Using Schutz's formalism, time notion recovered Wheeler-DeWitt equation transforms into dependent Schr\"{o}dinger equa...

P are constantly searching for ways to reconcile the goals of economic growth and environmental protection. Underlying this is the belief that the introduction of cleaner technologies and more effi cient environmental management processes could help reduce the costs of environmental protection and contribute to growth and jobs. Prince Hassan of Jordan and President of the Club of Rome noted in ...

P are constantly searching for ways to reconcile the goals of economic growth and environmental protection. Underlying this is the belief that the introduction of cleaner technologies and more effi cient environmental management processes could help reduce the costs of environmental protection and contribute to growth and jobs. Prince Hassan of Jordan and President of the Club of Rome noted in ...

Benchmarking of the performance of states, provinces, or districts in a decentralised health system is important for fostering of accountability, monitoring of progress, identifi cation of determinants of success and failure, and creation of a culture of evidence. The Mexican Ministry of Health has, since 2001, used a benchmarking approach based on the WHO concept of eff ective coverage of an i...

The feasibility of predicting the fracture behavior of surface cracks from shallow cracked bend specimens was investigated. The material studied was a high-strength steel stress relief embrittled to various levels of Charpy-V notch impact toughness. Material toughness was quantified in terms of the J-intergral at total specimen failure (-/„,,), using both deeply notched and shallow-notched bend...

Abstract Nonlinear energy sink (NES) can passively absorb broadband from primary oscillators. Proper multiple NESs connected in parallel exhibit superior performance to single-degree-of-freedom (SDOF) NESs. In this work, a linear coupling spring is installed between two so as expand the application scope of such vibration absorbers. The absorption and parallel-coupled system response induced by...

Abstract The theoretical scenarios of early universe and late time accelerated expansion constitute an open problem in cosmology. Relative Baryon Acoustic Oscillation (BAO) scales measured by 6dFGS, $$\mathrm SDSS+2dFGRS$$ S D + 2 d F<...

Background: Nanoparticles have been applied to medicine, hygiene, pharmacy and dentistry, and will bring significant advances in the prevention, diagnosis, drug delivery and treatment of disease. Green synthesis of metal nanoparticles has a very important role in nanobiotechnology, allowing production of non-toxic and eco-friendly particles.Objectives: Gr...

We study the fit of cosmological models with two additional free parameters $N_\mathrm{eff}$ and $\xi_e$ in addition to $\Lambda$CDM. introduce extra radiation components such as hot axions or sterile neutrinos energy density large neutrino degeneracy. Then, a larger is allowed without spoiling Big Bang Nucleosynthesis (BBN), positive degeneracy could improve BBN fit. By analysing data from Pla...

E ciency is considered a key factor when evaluating a bank's performance. Moreover, e ciency enhancement is an explicit policy objective in the Single Market Directive of the European Commission. But e ciency improvements may come at the expense of deteriorating bank pro ts and excessive risk-taking. Both the quantitative e ects and dynamic reactions of performance in response to e ciency impro...