Results 341 to 350 of about 20,465,692 (412)
Some of the next articles are maybe not open access.
Opportunities and challenges for a sustainable energy future
Nature, 2012Arun Majumdar, Si Li
exaly +2 more sources
Accurate and simple analytic representation of the electron-gas correlation energy.
Physical Review B (Condensed Matter), 1992We propose a simple analytic representation of the correlation energy ${\mathrm{\ensuremath{\varepsilon}}}_{\mathit{c}}$ for a uniform electron gas, as a function of density parameter ${\mathit{r}}_{\mathit{s}}$ and relative spin polarization \ensuremath{
J. Perdew, Yue Wang
semanticscholar +1 more source
Science, 1974
Publisher Summary This chapter explains the contextual and general meaning of energy. Energy is the capacity to do work. Energy takes many forms and it can be transformed from one form into another without loss as it is always conserved. The metric unit of work or energy is the joule.
openaire +6 more sources
Publisher Summary This chapter explains the contextual and general meaning of energy. Energy is the capacity to do work. Energy takes many forms and it can be transformed from one form into another without loss as it is always conserved. The metric unit of work or energy is the joule.
openaire +6 more sources
A climbing image nudged elastic band method for finding saddle points and minimum energy paths
, 2000A modification of the nudged elastic band method for finding minimum energy paths is presented. One of the images is made to climb up along the elastic band to converge rigorously on the highest saddle point.
G. Henkelman, B. Uberuaga, H. Jónsson
semanticscholar +1 more source
Revue Juridique de l'Environnement, 2012
Krolik Christophe. Energie. In: Revue Juridique de l'Environnement, n°2, 2012. pp. 385-388.
openaire +4 more sources
Krolik Christophe. Energie. In: Revue Juridique de l'Environnement, n°2, 2012. pp. 385-388.
openaire +4 more sources
Solar Energy Is the Energy [PDF]
Leonardo, 1995 1979. This aircraft was developed by Paul MacCready and his team to cross the English Channel from England to France. The 96-ft-wingspan aircraft weighed just 55 lbs. The use of synthetic, high-strength, lightweight material played a major role in creating this remarkable design. (Photo: Don Monroe. Courtesy Paul MacCready.) Fig. 3.
openaire +1 more source
Free Energy of a Nonuniform System. I. Interfacial Free Energy
, 1958It is shown that the free energy of a volume V of an isotropic system of nonuniform composition or density is given by : NV∫V [f 0(c)+κ(▿c)2]dV, where NV is the number of molecules per unit volume, ▿c the composition or density gradient, f 0 the free ...
J. Cahn, J. Hilliard
semanticscholar +1 more source
, 2012 Energy has far reaching impact in everyday life, industrial development, and understanding the various processes and natural phenomena. Energy is the capacity to do work. Total energy is the sum of all forms of the energy a system possesses. In the absence of magnetic, electrical, and surface tension effects, the total energy of a system consists of ...
openaire +1 more source
Density-functional approximation for the correlation energy of the inhomogeneous electron gas.
Physical Review B (Condensed Matter), 1986Langreth and Mehl (LM) and co-workers have developed a useful spin-density functional for the correlation energy of an electronic system. Here the LM functional is improved in two ways: (1) The natural separation between exchange and correlation is made,
J. Perdew
semanticscholar +1 more source
, 2001
As environmental concerns have focused attention on the generation of electricity from clean and renewable sources wind energy has become the world's fastest growing energy source.
T. Burton +3 more
semanticscholar +1 more source
As environmental concerns have focused attention on the generation of electricity from clean and renewable sources wind energy has become the world's fastest growing energy source.
T. Burton +3 more
semanticscholar +1 more source