Phase behavior and rheological analysis of reverse liquid crystals and W/I2, W/H2 gel emulsions using an amphiphilic block copolymer.

This article reports the phase behavior determi- nation of a system forming reverse liquid crystals and the formation of novel disperse systems in the two-phase region. The studied system is formed by water, cyclohexane, and Pluronic L-121, an amphiphilic block copolymer considered of special interest due to its aggregation and structural proper- ties. This system forms reverse cubic (I2) and reverse hexagonal (H2) phases at high polymer concentrations. These reverse phases are of particular interest since in the two-phase region, stable high internal phase reverse emulsions can be formed. The characterization of the I2 and H2 phases and of the derived gel emulsions was performed with small-angle X-ray scattering (SAXS) and rheometry, and the influence of temperature and water content was studied. TheH2 phase experimented a thermal transition to an I2 phase when temperature was increased, which presented an Fd3m structure. All samples showed a strong shear thinning behavior from low shear rates. The elasticmodulus (G0) in the I2 phase was around 1 order of magnitude higher than in theH2 phase. G0 was predominantly higher than the viscousmodulus (G00). In the gel emulsions,G0 was nearly frequency-independent, indicating their gel type nature. Contrarily to water-in-oil (W/O) normal emulsions, in W/I2 and W/H2 gel emulsions, G0, the complex viscosity (|η*|), and the yield stress (τ0) decreased with increasing water content, since the highly viscous microstructure of the con- tinuous phase was responsible for the high viscosity and elastic behavior of the emulsions, instead of the volumefraction of dispersed phase and droplet size. A rheological analysis, in which the cooperative flow theory, the soft glass rheology model, and the slip plane model were analyzed and compared, was performed to obtain one single model that could describe the non-Maxwellian behavior of both reverse phases and highly concentrated emulsions and to characterize their microstructure with the rheological properties.

Choosing hybrid organizations for local services delivery : An empirical analysis of partial privatization

The empirical literature about factors explaining local government delivery choices has traditionally focused the attention on the public or private production dilemma. However, hybrid organizational forms such as mixed public-private firms are increasingly used in several European countries. This paper makes use of survey data from Spanish municipalities to examine motivations of local governments for engaging in hybrid organizational forms. Data refer to two very relevant local services: water distribution and solid waste collection. The empirical analysis indicates that the use of mixed firms emerge as a type of pragmatically based ‘third way’ between pure public and pure private production. Indeed, local governments make use of mixed firms when cost considerations (scale economies, transaction costs and soon), financial constraints and private interests exert contradictory pressures. On the contrary, political and ideological factors do not play any significant role on the local government decision of engaging or not in joint ventures with private partners.

First- and second-language phonological representations in the mental lexicon

Performance-based studies on the psychological nature of linguistic competence can conceal significant differences in the brain processes that underlie native versus nonnative knowledge of language. Here we report results from the brain activity of very proficient early bilinguals making a lexical decision task that illustrates this point. Two groups of SpanishCatalan early bilinguals (Spanish-dominant and Catalan-dominant) were asked to decide whether a given form was a Catalan word or not. The nonwords were based on real words, with one vowel changed. In the experimental stimuli, the vowel change involved a Catalan-specific contrast that previous research had shown to be difficult for Spanish natives to perceive. In the control stimuli, the vowel switch involved contrasts common to Spanish and Catalan. The results indicated that the groups of bilinguals did not differ in their behavioral and event-related brain potential measurements for the control stimuli; both groups made very few errors and showed a larger N400 component for control nonwords than for control words. However, significant differences were observed for the experimental stimuli across groups: Specifically, Spanish-dominant bilinguals showed great difficulty in rejecting experimental nonwords. Indeed, these participants not only showed very high error rates for these stimuli, but also did not show an error-related negativity effect in their erroneous nonword decisions. However, both groups of bilinguals showed a larger correctrelated negativity when making correct decisions about the experimental nonwords. The results suggest that although some aspects of a second language system may show a remarkable lack of plasticity (like the acquisition of some foreign contrasts), first-language representations seem to be more dynamic in their capacity of adapting and incorporating new information. &

Jóvenes internados bajo la LO 5/2000 reguladora de la responsabilidad penal del menor. Estudio de casos

This research focuses on life trajectories and desistance from crime processes in a case-study qualitative sample of six offenders from 18 to 21 years old sentenced to penal custody in Barcelona, Spain.The theoretical framework comprises systemism (Mario Bunge, 2000, 2006), the life-course perspective (Elder, 1994, 2007), transition to adulthood (Casal et al., 2006) and desistance from crime as a process (Maruna, 2001; Sampson and Laub, 2003; Bottoms and Shapland, 2010; Cid and Martí, 2011).Information was collected through in-depth personal interviews and analysed through content analysis. Results show the importance of attachment to family and school institutions, as well as an effective professional training skill programme at the correctional facility to achieve a law-abiding lifestyle at adulthood.

Gambling in Spain: update on experience, research and policy

AIMS: To describe the current situation of gambling in Spain, sketching its history and discussing the regulations and legislation currently in force within the framework of the European Union (EU), and to review the epidemiology of gambling in Spain, the self-help groups and professional treatments available, and their potential effectiveness. METHODS: A systematic computerized search was performed in three databases (EMBASE, PubMed and PsychINFO, including articles and chapters) and the reference lists from previous reviews to obtain some of the most relevant studies published up to now on the topic of pathologic gambling in Spain. RESULTS: Similar to other EU countries, Spain has a high prevalence of pathologic gambling, focused on specific culturally bounded types of gambling. Expenditure in online gaming has risen significantly in the last few years, prompting the Spanish government to draft new legislation to regulate gaming. CONCLUSIONS: The gaming industry is expected to be one of the fastest growing sectors in Spain in the coming years owing to the rise of new technologies and the development of online gaming

Estratègies de cura i presa de decisions en persones grans amb dependència ingressades en una unitat geriàtrica d'atenció intermèdia : estudi descriptiu

Aquest estudi té com objectiu observar les relacions entre les estratègies de cura (formal, informal, mixta) que fan servir els cuidadors de persones grans dependents, la seva situació social i les seves motivacions per la decisió respecte a com fan la cura. L’estat del tema destaca el predomini de les cures informals sobre les formals en els models de benestar mediterranis i la rellevància de la interacció entre factors personals socioculturals i les polítiques socials en la presa de decisions individuals sobre la cura de la dependència. La llei de la dependència, de recent implementació a l’Estat espanyol, ha universalitzat l’accés als recursos formals, creant un nou paradigma d’interacció cuidadors-recursos. Es tracta d’un estudi observacional, transversal, descriptiu de tipus mixt quantitatiu/qualitatiu realitzat a partir d’entrevistes individuals als cuidadors de dependents ingressats en una unitat geriàtrica d’atenció intermèdia. Es recullen dades sobre el context sociofamiliar, l’estratègia de cura, l’autopercepció i les motivacions. Els resultats mostren que els cuidadors combinen prestacions econòmiques i serveis (públics i privats) per adaptar al màxim l’estratègia a les condicions del dependent i a les seves pròpies. Tenen la convicció generalitzada que l’atenció cal fer-la al domicili per motius de reciprocitat i respecte a la persona cuidada. El pas a l’atenció residencial és una decisió molt difícil pels cuidadors. La implantació de la llei de la dependència ha normalitzat la relació entre cuidadors i recursos formals, però la burocratització i la insuficiència de l’oferta de serveis no afavoreixen canvis substancials en la provisió de l’ajut, que continua essent majoritàriament informal. La millora en la percepció de continuïtat d’atenció entre el domicili i la residència, i també en la gestió i l’oferta de serveis formals públics es presenten com a reptes de treball importants al nostre país.

Jóvenes que estuvieron en el sistema de protección social a la infancia : reflexiones a partir de una investigación realizada en Girona, España = Young people who were in the child protection system : reflections from a study done in Girona, Spain

Research on residential care is still scarce despite its high implementation in Spain. This article presents the results of a research using qualitative methods. The study analyses the situation experienced by young people who lived in foster care in the province of Girona (1994-2002) based on their opinions and perceptions expressed in a semi-structured interview. The results, clustered into subcategories, show lack of knowledge about the reasons why they needed foster care, if it was better being there than staying with their parents, and the lack of support for transition to adulthood. The study shows implications for children and youth policies, professional practice and research