RESUMO
Introduction: This systematic review identified qualitative and mixed-methods empirical studies on psychotherapy from dialogical and narrative approaches, aiming to address the following questions: (1) How are subjectivity and intersubjectivity qualitatively understood in dialogical and/or narrative psychotherapies studied using dialogical and narrative approaches? (2) How do therapeutic changes occur, including their facilitators and barriers? (3) What psychotherapeutic resources are available for psychotherapists in these types of studies? Method: The articles were selected according to the Systematic Reviews and Meta-Analyses (PRISMA) guidelines and the eligibility criteria proposed by the PICOS strategy (participants, interventions, comparators, outcomes, and study design) from 163 records identified in the Web of Science Core Collection databases. Results: The systematic review process allowed the selection of 16 articles. The results provided insights into the understanding of subjectivity, intersubjectivity, change in psychotherapy, its facilitators, and barriers from these perspectives. It also offered some therapeutic interventions that can be implemented in psychotherapies, integrating dialogical and/or narrative aspects. Discussion: The centrality of dialogical exploration of patient/client resources, therapists as interlocutors fostering client agency, polyphony serving as scaffolding for change, and interconnection with the sociocultural environment are discussed. The integration of this latter topic has been a challenge for these types of studies, considering the active construction of shared meanings. The dialogical and narrative approaches focus psychotherapy on transforming meanings through dialogue and re-authoring stories, evolving within cultural and historical contexts. Thus, this study highlights the relevance of these perspectives in contemporary psychotherapy, emphasizing dialogue in co-creation within an intersubjective framework.
RESUMO
A novel class of graphene-based materials incorporated into natural lignocellulosic fiber (NLF) polymer composites is surging since 2011. The present overview is the first attempt to compile achievements regarding this novel class of composites both in terms of technical and scientific researches as well as development of innovative products. A brief description of the graphene nature and its recent isolation from graphite is initially presented together with the processing of its main derivatives. In particular, graphene-based materials, such as nanographene (NG), exfoliated graphene/graphite nanoplatelet (GNP), graphene oxide (GO) and reduced graphene oxide (rGO), as well as other carbon-based nanomaterials, such as carbon nanotube (CNT), are effectively being incorporated into NLF composites. Their disclosed superior mechanical, thermal, electrical, and ballistic properties are discussed in specific publications. Interfacial shear strength of 575 MPa and tensile strength of 379 MPa were attained in 1 wt % GO-jute fiber and 0.75 wt % jute fiber, respectively, epoxy composites. Moreover, a Young's modulus of 44.4 GPa was reported for 0.75 wt % GO-jute fiber composite. An important point of interest concerning this incorporation is the fact that the amphiphilic character of graphene allows a better way to enhance the interfacial adhesion between hydrophilic NLF and hydrophobic polymer matrix. As indicated in this overview, two basic incorporation strategies have so far been adopted. In the first, NG, GNP, GO, rGO and CNT are used as hybrid filler together with NLF to reinforce polymer composites. The second one starts with GO or rGO as a coating to functionalize molecular bonding with NLF, which is then added into a polymeric matrix. Both strategies are contributing to develop innovative products for energy storage, drug release, biosensor, functional electronic clothes, medical implants, and armor for ballistic protection. As such, this first overview intends to provide a critical assessment of a surging class of composite materials and unveil successful development associated with graphene incorporated NLF polymer composites.