Kinetic study of the catalytic cracking of waste motor oil using biomass-derived heterogeneous catalysts.

Herein, biochar from biomass residues is demonstrated as active materials for the catalytic cracking of waste motor oil into diesel-like fuels. Above all, alkali-treated rice husk biochar showed great activity with a 250% increase in the kinetic constant compared to the thermal cracking. It also showed better activity than synthetic materials, as previously reported. Moreover, much lower activation energy (185.77to293.48kJmol) for the cracking process was also obtained. According to materials characterization, the catalytic activity was more related to the nature of the biochar's surface than its specific surface area. Finally, liquid products complied with all the physical properties defined by international standards for diesel-like fuels, with the presence of hydrocarbons chains between C10-C27 similar to the ones obtained in commercial diesel.

Using a stakeholder-engaged, iterative, and systematic approach to adapting collaborative decision skills training for implementation in VA psychosocial rehabilitation and recovery centers.

BACKGROUND: Adaptation of interventions is inevitable during translation to new populations or settings. Systematic approach to adaptation can ensure that fidelity to core functions of the intervention are preserved while optimizing implementation feasibility and effectiveness for the local context. In this study, we used an iterative, mixed methods, and stakeholder-engaged process to systematically adapt Collaborative Decision Skills Training for Veterans with psychosis currently participating in VA Psychosocial Rehabilitation and Recovery Centers. METHODS: A modified approach to Intervention Mapping (IM-Adapt) guided the adaptation process. An Adaptation Resource Team of five Veterans, two VA clinicians, and four researchers was formed. The Adaptation Resource Team engaged in an iterative process of identifying and completing adaptations including individual qualitative interviews, group meetings, and post-meeting surveys. Qualitative interviews were analyzed using rapid matrix analysis. We used the modified, RE-AIM enriched expanded Framework for Reporting Adaptations and Modifications to Evidence-based interventions (FRAME) to document adaptations. Additional constructs included adaptation size and scope; implementation of planned adaptation (yes-no); rationale for non-implementation; and tailoring of adaptation for a specific population (e.g., Veterans). RESULTS: Rapid matrix analysis of individual qualitative interviews resulted in 510 qualitative codes. Veterans and clinicians reported that the intervention was a generally good fit for VA Psychosocial Rehabilitation and Recovery Centers and for Veterans. Following group meetings to reach adaptation consensus, 158 adaptations were completed. Most commonly, adaptations added or extended a component; were small in size and scope; intended to improve the effectiveness of the intervention, and based on experience as a patient or working with patients. Few adaptations were targeted towards a specific group, including Veterans. Veteran and clinician stakeholders reported that these adaptations were important and would benefit Veterans, and that they felt heard and understood during the adaptation process. CONCLUSIONS: A stakeholder-engaged, iterative, and mixed methods approach was successful for adapting Collaborative Decision Skills Training for immediate clinical application to Veterans in a psychosocial rehabilitation center. The ongoing interactions among multiple stakeholders resulted in high quality, tailored adaptations which are likely to be generalizable to other populations or settings. We recommend the use of this stakeholder-engaged, iterative approach to guide adaptations.

Marital Processes Linking Gender Role Attitudes and Marital Satisfaction Among Mexican-Origin Couples: Application of an Actor-Partner Interdependence Mediation Model.

Informed by dyadic approaches and culturally informed, ecological perspectives of marriage, we applied an actor-partner interdependence mediation model (APIMeM) in a sample of 120 Mexican-origin couples to examine (a) the associations linking Mexican immigrant husbands' and wives' gender role attitudes to marital satisfaction directly and indirectly through marital processes (i.e., warmth and negativity) and (b) whether the associations between spouses' gender role attitudes and marital processes were moderated by wives' employment. Although previous research has identified spouses' gender role attitudes as potential predictors of spouses' marital satisfaction, no study has examined these links in a dyadic model that elucidates how gender role attitudes may operate through processes to shape marital satisfaction and conditions under which associations may differ. We found that when spouses reported less sex-typed attitudes, their partners reported feeling more connected to them and more satisfied with the marriage, regardless of whether wives were employed. Our results suggest that marital satisfaction was highest for those Mexican-origin couples in which marital partners were less sex-typed in their attitudes about marital roles to the extent that partners' attitudinal role flexibility promoted spouses' feelings of warmth and connection to their partner.

Sobre la base de enfoques diádicos y perspectivas de matrimonio ecológicas y culturalmente fundamentadas, aplicamos un modelo de mediación e interdependencia actor-pareja en una muestra de 120 parejas de origen mexicano para examinar (a) las asociaciones que conectan las actitudes hacia los roles de género de los esposos y las esposas inmigrantes mexicanos con la satisfacción conyugal directamente e indirectamente mediante procesos conyugales (p. ej.: calidez y negatividad) y (b) si las asociaciones entre las actitudes hacia los roles de género de los cónyuges y los procesos conyugales estuvieron moderados por el empleo de las esposas. Aunque en investigaciones anteriores se han reconocido las actitudes hacia los roles de género de los cónyuges como posibles predictores de su satisfacción conyugal, ningún estudio ha analizado estas conexiones en un modelo diádico que aclare cómo las actitudes hacia los roles de género pueden funcionar mediante procesos para determinar la satisfacción conyugal y las condiciones en las cuales las asociaciones pueden diferir. Descubrimos que cuando los cónyuges informaron menos actitudes consideradas adecuadas para cada género, sus parejas informaron sentirse más conectadas con ellos y más satisfechas con el matrimonio, independientemente de si las esposas estaban empleadas o no. Nuestros resultados sugieren que la satisfacción conyugal fue mayor para las parejas de origen mexicano en las cuales los cónyuges tuvieron actitudes menos típicas de cada género con respecto a los roles conyugales hasta el punto de que la flexibilidad actitudinal hacia los roles de los integrantes de la pareja fomentó sentimientos de calidez y conexión con su pareja.

Pupillary Responses as a Biomarker of Diminished Effort Associated With Defeatist Attitudes and Negative Symptoms in Schizophrenia.

BACKGROUND: The hypothesis that defeatist performance attitudes are associated with decreased goal-directed task effort and negative symptoms in consumers with schizophrenia was investigated by using pupillary responses as a biomarker of task effort. Pupillary dilation during cognitive tasks provides a biomarker of effort devoted to the task, with greater dilation indicating greater effort. METHODS: Defeatist attitudes were assessed in 149 consumers with schizophrenia or schizoaffective disorder and 50 healthy control subjects, and consumers were divided into three groups (tertile split) with respect to severity of defeatist attitudes. Pupillary dilation responses were recorded during a digit-span task with three-, six-, and nine-digit spans. RESULTS: Effort allocation (pupillary responses) to the task increased as the processing load increased from low (three-digit) to moderate (six-digit) demands in healthy control subjects and consumers with schizophrenia with mild and moderate severity of defeatist attitudes. In contrast, consumers with severe defeatist attitudes did not increase their effort when processing demands increased from low to moderate loads. These consumers showed significantly less effort in the six-digit condition relative to consumers with mild defeatist attitudes. Moreover, consumers with severe defeatist attitudes showed significantly greater severity of negative symptoms relative to consumers with mild defeatist attitudes and negative symptoms were significantly correlated with defeatist attitudes. CONCLUSIONS: These results suggest a relationship between defeatist performance attitudes, goal-directed task effort indexed by pupillary responses, and negative symptoms in schizophrenia. The findings have implications for using cognitive therapy to reduce defeatist attitudes that may contribute to diminished effort and negative symptoms in schizophrenia.

Teaching Spanish to veterans with psychiatric disabilities: A creative approach to rehabilitation and recovery.

TOPIC: A Spanish course was heuristically designed to serve as a context to bring together components of various therapies and was offered to veterans with psychiatric disabilities enrolled in a psychosocial rehabilitation and recovery center. PURPOSE: Bilingualism has been associated with enhanced cognitive function and deserves more attention in psychiatric rehabilitation research. Developing opportunities for language instruction to potentially improve cognitive and community integration is explored. SOURCES USED: Relevant studies were reviewed to inform the design of the Spanish course and feedback was elicited from veterans who took the course. CONCLUSIONS AND IMPLICATIONS FOR PRACTICE: Dialoguing with veterans can yield innovative and recovery-oriented changes to services, and may increase consumer satisfaction. Since leisure, social, and educational activities can draw from a person's interests and strengths, incorporating elements of therapies into these activities may create less stigmatizing and more engaging forms of treatment.

Economic pressure, cultural adaptation stress, and marital quality among Mexican-origin couples.

Based on data from a sample of 120 first-generation Mexican immigrant couples collected at the start of the Great Recession in the United States, this study tested an actor-partner interdependence mediation model (APIMeM) in which spouses' perceptions of stress related to economic pressure and cultural adaptation were linked to their own and their partners' reports of marital satisfaction through spouses' depressive symptoms and marital negativity. As hypothesized, results supported indirect links between economic and cultural adaptation stressors and spouses' marital negativity and satisfaction: (1) contextual stress was associated with depressive symptoms, (2) depressive symptoms were positively associated with marital negativity for both husbands and wives and negatively associated with marital satisfaction for wives only, and (3) marital negativity was inversely associated with marital satisfaction for both spouses. Two partner effects emerged: (a) husbands' depressive symptoms were positively associated with wives' reports of marital negativity and (b) husbands' marital negativity was inversely related to wives' marital satisfaction. From these findings, we can infer that the psychological distress that arises for Mexican-origin spouses as they respond to the challenges of making ends meet during difficult economic times while they simultaneously navigate adapting to life in a new country is evidenced in their marital quality. Specifically, this study found that contextual stress external to the marital relationship was transmitted via spouses' psychological distress and negative marital exchanges to spouses' marital satisfaction. Wives' marital satisfaction was shown to be uniquely vulnerable to their own and their husbands' depressive symptoms and marital negativity.