Double diffusive convection in a binary viscoelastic fluid saturated porous layer the presence of cross diffusion effect and an internal heat source is studied analytically using linear nonlinear stability analysis. The theory based on normal mode technique, while minimal representation truncated double Fourier series. modified Darcy law for Oldroyd type considered to model momentum equation. o...

Juvenile hormone (JH) affects multiple physiological traits in insects. In social insects, besides development, JH has been demonstrated to influence caste determination and the production of chemical compounds. wasps, triggers behavioral maturation, gonadotropic effects, hydrocarbon modulation. Here, we investigated whether displays same function fertility cue females German wasp Vespula germa...

Mucho se ha escrito recientemente sobre la necesidad de que las escuelas sean diferentes lo han sido si enfrentar los desafíos sociedad del conocimiento (por ejemplo, Hargreaves y Evans, 1997; Hargreaves, 2003; Mitchell Sackney, 2000). Los llamados persistentes a reforma escolar llevado un creciente apoyo para vistas como comunidades aprendizaje (DuFour & Eaker; 1998; Harris, 2002; Huffman ...