A recent study using Heckman-type selection models to adjust for non-response in the Zambia 2007 Demographic and Health Survey (DHS) found a large correction in HIV prevalence for males. We aim to validate this finding, replicate the adjustment approach in other DHSs, apply the adjustment approach in an external empirical context, and assess the robustness of the technique to different adjustme...

The title mol-ecule, C(15)H(20)O(4), has an E conformation about its C=C bond and is almost planar (r.m.s. deviation of all non-H atoms = 0.04 Å). The crystal structurere features O-H⋯O and C-H⋯O hydrogen bonds.

The title mononuclear zinc complex, [ZnCl(2)(C(17)H(26)N(2)O(2))], was obtained by the reaction of 2-hy-droxy-4-meth-oxy-benzaldehyde, N-cyclo-hexyl-propane-1,3-diamine and zinc chloride in methanol. The Zn(II) atom is four-coordinated by the phenolate O atom and imine N atom of the bidentate zwitterionic Schiff base ligand 2-{[3-(cyclo-hexyl-amino)-prop-yl]imino-meth-yl}-5-meth-oxy-phenol, and...

Reaction of oxalic acid and di-phenyl-tin dichloride in the presence of cyclo-hexyl-amine led to the formation of the title salt, (C6H14N)2[Sn(C6H5)2(C2O4)2]. The dianion is made up from an Sn(C6H5)2 moiety cis-coordinated by two chelating oxalate anions, leading to an overall distorted octa-hedral coordination geometry of the Sn(IV) atom. The negative charges are compensated by two surrounding...

The aim of this work was to analyze and compare the concentration higher alcohols, esters, acids in wines from Tempranillo Blanco. Blanco is a new little-studied white variety that originated by natural mutation. During three seasons, grapevines both varieties were harvested, nine made each. volatile composition determined GC-MS. In varieties, content alcohols than those esters acids. Wines had...

The crystal structure and the conformation of the title compound, C22H27N3O7S, were determined from the synthetic pathway and by X-ray analysis. This compound is a new 4-thia-zolidinone derivative prepared and isolated as pure product from thio-semicarbazone carvone. The mol-ecule is built up from an oxo-thia-zolidine ring tetra-substituted by a meth-oxy-oxo-ethyl-idene, a maleate, an oxygen an...

In the title compound, C17H21BrO2S, the cyclo-hexyl ring adopts a chair conformation and the aryl-sulfinyl unit is positioned equatorially relative to the cyclo-hexyl group. The benzo-furan unit is essentially planar, with an r.m.s. deviation of 0.016 (2) Å. In the crystal, mol-ecules are linked by weak C-H⋯O, C-H⋯π and Br⋯π [3.663 (2) Å] inter-actions, resulting in a three-dimensional network....

X-ray structures of five bis(N — R-salicylaldiminato)zinc(II) complexes with R — ethyl, «-propyl, /-propyl, «-butyl and 4-thia-rc-hexyl were determined. The N202 coordination geometry is in all cases gwas/-tetrahedral with the dihedral angle between the planes of the two chelate rings ranging from 84 to 89°. Bond lengths and angles in the coordination sphere are not affected by the nature of R ...