We have investigated by numerical simulation the density segregation of fine equal-sized bronze and glass particles subject to vertical vibrations. The model was found to be capable of predicting the two main segregation forms ("bronze on top" and "sandwich") in roughly the same regions of the phase diagram as was found experimentally by Burtally We investigated the effects of pressure air forc...

A highly sensitive and selective method for amplified electrochemical detection for hairpin-stem-loop structured target sequences was developed based on the temperature regulation of DNA hybrids on a sandwich-type electrochemical DNA sensor. Multistep hybridization was applied to promote the hybridization efficiency of each section of sandwich structure. The results showed that both multistep a...

A graph G = (V,E) is a chordal probe graph if its vertices can be partitioned into two sets, P (probes) and N (non-probes), where N is a stable set and such that G can be extended to a chordal graph by adding edges between non-probes. We give several characterizations of chordal probe graphs, first, in the case of a fixed given partition of the vertices into probes and non-probes, and second, i...

A graph G s = (V , E s) is a sandwich for a pair of graphs G t = (V , E t) and G = (V , E) if E t ⊆ E s ⊆ E. A sandwich problem asks for the existence of a sandwich graph having an expected property. In a seminal paper, Golumbic et al. [Graph sandwich problems, J. Algorithms 19 (1995) 449–473] present many results on sub-families of perfect graphs. We are especially interested in comparability ...

The title compound, [Ni(C(13)H(15))(2)], shows a slightly distorted sandwich structure with two independent mol-ecules in the asymmetric unit. Both Ni atoms are located on crystallographic centres of inversion.

Sandwich plates with two thin stiff face-sheets and a soft center core have been used in many constructions for which the dominating load is transverse bending. Many theoretical/numerical analyses devoted to studying deformation mechanism of such structure. But relatively limited experimental investigations are present this field they often self-content little connection existing theoretical pu...

Fatty acid modified Mn(12) derivatives can self-assembly into vesicular structures in organic media. The vesicular assemblies have a sandwich structure with Mn(12) cluster separated by two alkyl chain layers.

Material experts are striving to use natural resources as skin and core in composite sandwiches achieve light weight, biodegradability, cost benefits. This paper reports one such newly developed green sandwich its biodegradable behavior. The of flax fiber agglomerated cork respectively. is manufactured by vacuum bagging technique order get higher volume fraction fiber. biodegradability testing ...