Relationships with citizens in public management: a study at the largest Spanish Town Halls

This paper provides an analysis of the relationships existing between citizen participation and satisfaction levels within the framework of Spanish local administrations, additionally paying attention to the links between organisational size and the said participation and satisfaction levels. The results of a survey questionnaire answered by 388 Human Resources (HR) managers from the largest Spanish Town Halls were examined for these purposes. A claim is made both to increase the degree of citizen participation in public decision-making and to ensure the delivery of efficient and effective public services that can really meet citizens’ needs in Spanish town Halls.

Desilication of TS-1 zeolite for the oxidation of bulky molecules

A series of modified TS-1 samples have been produced by desilication of the original TS-1 (4 wt.% Ti) using a chemical treatment with NaOH. Desilicated TS-1 zeolites exhibit a large BET surface area together with a well-developed mesoporosity. The hierarchical catalysts from desilication of TS-1 zeolite show a good catalytic activity for the oxidation of small molecules and a significantly higher activity for the oxidation of bulky molecules.

Colloidal gold immobilized on mesoporous silica as a highly active and selective catalyst for styrene epoxidation with H2O2

Colloidal gold nanoparticles were synthesized by different procedures affording suspensions with two different mean sizes (2 and 5 nm). Au catalysts were prepared by sol immobilization onto several silica frameworks with different 2D and 3D mesoporosities. The catalysts were tested in styrene oxidation reactions showing excellent efficiency and selectivity. The effect of nanoparticle size and mesoporous framework on the physical and catalytic properties of the final materials was studied. The most selective catalyst was prepared from the 5 nm Au nanoparticles and the more interconnected silica framework (3D mesoporosity).

Combined Effect of Poly(hydroxybutyrate) and Plasticizers on Polylactic acid Properties for Film Intended for Food Packaging

Poly(lactic acid) PLA, and poly(hydroxybutyrate) PHB, blends were processed as films and characterized for their use in food packaging. PLA was blended with PHB to enhance the crystallinity. Therefore, PHB addition strongly increased oxygen barrier while decreased the wettability. Two different environmentally-friendly plasticizers, poly(ethylene glycol) (PEG) and acetyl(tributyl citrate) (ATBC), were added to these blends to increase their processing performance, while improving their ductile properties. ATBC showed higher plasticizer efficiency than PEG directly related to the similarity solubility parameters between ATBC and both biopolymers. Moreover, ATBC was more efficiently retained to the polymer matrix during processing than PEG. PLA–PHB–ATBC blends were homogeneous and transparent blends that showed promising performance for the preparation of films by a ready industrial process technology for food packaging applications, showing slightly amber color, improved elongation at break, enhanced oxygen barrier and decreased wettability.

Synthesis and Characterization of Lactic Acid Oligomers: Evaluation of Performance as Poly(Lactic Acid) Plasticizers

The use of fully bio-based and biodegradable materials for massive applications, such as food packaging, is an emerging tendency in polymer research. But the formulations proposed in this way should preserve or even increase the functional properties of conventional polymers, such as transparency, homogeneity, mechanical properties and low migration of their components to foodstuff. This is not always trivial, in particular when brittle biopolymers, such as poly(lactic acid) (PLA), are considered. In this work the formulation of innovative materials based on PLA modified with highly compatible plasticizers, i.e. oligomers of lactic acid (OLAs) is proposed. Three different synthesis conditions for OLAs were tested and the resulting additives were further blended with commercial PLA obtaining transparent and ductile materials, able for films manufacturing. These materials were tested in their structural, thermal and tensile properties and the best formulation among the three materials was selected. OLA with molar mass (Mn) around 1,000 Da is proposed as an innovative and fully compatible and biodegradable plasticizer for PLA, able to replace conventional plasticizers (phthalates, adipates or citrates) currently used for films manufacturing in food packaging applications.

Synthesis of palladium nanoparticles on carbon nanotubes and graphene for the chemoselective hydrogenation of para-chloronitrobenzene

We have studied the synthesis of palladium nanoparticles over carbon nanotubes (Pd/CNT) and graphene (Pd/G) and we have tested their catalytic performance in the liquid phase chemoselective hydrogenation of para-chloronitrobenzene at room temperature. The catalysts were characterized by N2 adsorption/desorption isotherms, TEM, X-ray diffraction, infrared and X-ray photoelectron spectroscopy and ICP-OES. The palladium particle size on Pd/G (3.4 nm) and Pd/CNT (2.8 nm) was similar though the deposition was higher on Pd/G. Pd/CNT was more active which can be ascribed to the different surface area and electronic properties of the Pd nanoparticles over CNT, while the selectivity was 100% to the corresponding haloaniline over both catalysts and they were quite stable upon recycling.

Tiempos de equidad de género: descripción de las desigualdades entre comunidades autónomas, España 2006-2014

Objetivo: La equidad de género es un determinante estructural de las desigualdades en salud. Por ello, se pretende visibilizar su evolución en las comunidades autónomas (CC.AA.) desde 2006, previamente a la promulgación de la Ley de Igualdad (2007) y la crisis económica (2008), hasta 2014. Método: Estudio ecológico sobre la equidad de género en las 17 CC.AA. en 2006-2011-2014. Cálculo de: 1) índice de equidad de género modificado (IEGM) de las CC.AA. (0 = equidad, ±1 = inequidad); 2) convergencia interregional y temporal en equidad de género. Resultados: El IEGM de las CC.AA.2014 toma valores negativos próximos a 0 (inequidad desfavorable a las mujeres). No hay convergencia interregional en la equidad de género, pues aumenta la dispersión (2006: 0,1503; 2011: 0,2280; 2014: 0,4964). Tampoco existe convergencia temporal, al no evolucionar mejor las CC.AA. menos equitativas. La brecha de género en actividad económica sigue desfavorable a las mujeres. En 2006-2011 disminuye en todas las CC.AA., y en 2014 aumenta en seis CCAA. La brecha de género en educación tiene valores positivos próximos a 0 (desfavorable a los hombres) en 2006-2011-2014, y en empoderamiento es desfavorable a las mujeres, siendo la dimensión que más pesa en la equidad de género. Se mantiene la dispersión entre CC.AA. en 2006-2014 en actividad económica y educación, y aumenta en empoderamiento. Conclusiones: El contexto de equidad de género alcanzado en las CC.AA. españolas en 2006 se ha perdido durante la crisis económica, al aumentar la desigualdad en la equidad de género entre CC.AA. en 2014. La inequidad de género sigue siendo desfavorable a las mujeres.