Energy is crucial to economic progress, but the contemporary worldwide population increase that demands greater energy generated from conventional exhaustible resources, an energy price upsurge, and environmental concerns, imperils sustainable economic growth. Nevertheless, switching to renewable energy produced from naturally replenished resources promotes energy security, likewise addressing ...

From observations on load carriage on subjects engaged solely for the manual carriage of compact loads of a given range of weights, over a range of self selected speeds, Gross Load (Body weight plus weight of external load) and the speed of carriage were found to be the principal influences in determining the energy expenditures of the tasks and the cardiorespiratory changes during their perfor...

We present an effective adaptive procedure for the numerical approximation of steady-state Gross–Pitaevskii equation. Our approach is solely based on energy minimization, and consists a combination novel finite element mesh refinement technique, which does not rely any posteriori error estimates, recently proposed new gradient flow. Numerical tests show that this strategy able to provide highly...

We discuss a connection between M -theory and the Gross-Neveu model with fermionic fields obeying periodic boundary conditions in 2 + 1 dimensions. In the large-N limit, the latter may be obtained from the former in the limit of vanishing volume of the Liouville dimension. We show how the world-sheet cosmological constant may be obtained from the Gross-Neveu model. At its critical point, which ...

It is shown that the energy levels of the one-dimensional nonlinear Schrödinger, or Gross-Pitaevskii, equation with the homogeneous trap potential x, p ≥ 1, obey an approximate scaling law and as a consequence the energy increases approximately linearly with the quantum number. Moreover, for a quadratic trap, p = 1, the rate of increase of energy with the quantum number is independent of the no...

The energy super-critical Gross–Pitaevskii equation with a harmonic potential is revisited in the particular case of cubic focusing nonlinearity and dimension d ? 5 . In order to prove existence ground state (a positive, radially symmetric solution space), we develop shooting method deal one-parameter family classical solutions an initial-value problem for stationary equation. We that curve (th...

the purpose of this study is the utilization of furfural residue for heating energy and activated carbon production. to evaluate the energy production of the residue, bulk density, melting point, and heating value were measured. furthermore, moisture, ash, volatile compounds, fixed carbon, lignin, and elements were determined. ash and volatile content average were measured at 15.4% and 68.9%, r...