Hydrothermal Synthesis and Study of Inorganic-Organic Hybrid Vanadate of Nickel(II) Coordination Complex with Pyrazine, Ni3(C4H4N2)3(V8O23)

Artículo científico: postprint

M(C6H16N3)2(VO3)4 as heterogeneous catalysts. Study of three new hybrid vanadates of cobalt(II), nickel(II) and copper(II) with 1-(2-aminoethyl)piperazonium.

postprint

Double proximity effect in lateral S-NF-S junctions

We investigate planar Josephson junctions where the intermediate spacer between the two superconductors is an hybrid structure made by a normal metal and a ferromagnet. The different behaviors of the S-N-S junctions with thicknesses of 50 nm in both Cu and Nb layers, and S-N/F-S junctions with 10 nm of Co, 50 nm of Cu and 50 nm of Nb are studied. In this way, we analyze the influence of the ferromagnetic exchange interaction on the proximity effect. A dramatic supression of the josephson critical current of the Nb-(Cu/Co)-Nb junctions is observed. We believe that the reason for this is due to the length scale of the superconducting correlations of the electrons and holes of the weak link is larger than the thickness of Cu/Co bilayer.

Potential of grouper hybrid (Epinephelus fuscoguttatus x E. polyphekadion) for aquaculture

The marine grouper species are considered high value food fish in several countries. However, controlled breeding and hatchery production of grouper fingerlings for commercial farming is still in its infancy. Investigations on the growth performance of the brown marbled grouper Epinephelus fuscoguttatus (Forskal), camouflage grouper E. polyphekadion (Bleeker) and their hybrid (E. fuscoguttatus x E. polyphekadion) under hatchery and growout culture conditions indicate the potential of grouper hybrids for aquaculture.

Double layers in gravity theories

Gravitational double layers, unlike their classical electromagnetic counterparts, are thought to be forbidden in gravity theories. It has been recently shown, however, that they are feasible in, for instance, gravity theories with a Lagrangian quadratic in the curvature. This is surprising with many potential consequences and the possibility of new physical behaviours. While a clear interpretation seems elusive, several lines of research are open. I present the field equations for double layers, the new physical quantities arising, and several explicit examples

The commercial use of chicken processing wastes to raise hybrid catfish (Clarias gariepinus) x Clarias macrocephalus) in Thailand

The article highlights the commercial use of chicken processing wastes on nursery and growout operations of hybrid catfish (Clarias gariepinus x Clarias macrocephalus) farm in Thailand.

Portable canvas tanks for culture of hybrid catfish (Clarias gariepinus x Clarias macrocephalus) by small-scale farmers in Malaysia

This paper describes the trials made with a simple portable canvas-tarpaulin tank system developed at the University Sains Malaysia for culture of hybrid catfish (Clarias gariepinus x Clarias macrocephalus) by Malaysia small scale farmers.