122 research outputs found

    Designing Psychological Co-research of Emancipatory-Technical Relevance Across Age Thresholds

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    The requirement that theoretical and empirical research is to sustainably benefit not only the nominal researcher, but also the other research participants, is deeply embedded in the conceptual-analytical framework of Psychology from the Standpoint of the Subject (PSS) and its co-researcher principle. PSS research is thus to be of emancipatory relevance to those others the researcher comes to collaborate with. Meanwhile, the question of how this requirement can be prospectively integrated into the design of a research project remains subject to debate. This question emerges as particularly difficult to tackle in research projects that engage in co-research with young children: How can a researcher ensure that the young children s-he works togethe with benefit from the research project? Based on the critical analysis of an earlier research project implemented by the author, the contribution at hand suggests that PSS’ foundational notion of emancipatory relevance needs to be revisited. It argues that if a research project is to sustainably benefit young co-researchers, the technical relevance of the expected mutual emancipation should as well be explicitly considered in the project design. A discussion of recent methodological developments in child-targeted Participatory Design (PD) and Human-Computer Interaction (HCI) serve as inspiration for this conceptual specification. The contribution thereby invites co-research to further investigate how emancipatory relevance cannot only to be methodologically attained via dissemination of research results and conceptual developments, but also via the actual research process it attempts to engage the co-researchers in irrespective of their age

    Everolimus improves memory and learning while worsening depressive- and anxiety-like behavior in an animal model of depression

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    Everolimus (EVR) is an orally-administered rapamycin analog that selectively inhibits the mammalian target of rapamycin (mTOR) kinase (mainly mTORC1 and likely mTORC2) and the related signaling pathway. mTOR is a serine/threonine protein kinase regulating multiple important cellular functions; dysfunction of mTOR signaling has also been implicated in the pathophysiology of several neurological, neurodegenerative, developmental and cognitive disorders. EVR is widely used as an anti-neoplastic therapy and more recently in children with tuberous sclerosis complex (TSC). However, no clear correlation exists between EVR use and development of central side effects e.g. depression, anxiety or cognitive impairment. We studied the effects of a 3 weeks administration of EVR in mice chronically treated with betamethasone 21-phosphate disodium (BTM) as a model of depression and cognitive decline. EVR treatment had detrimental effects on depressive- and anxiety-like behavior while improving cognitive performance in both control (untreated) and BTM-treated mice. Such effects were accompanied by an increased hippocampal neurogenesis and synaptogenesis. Our results therefore might support the proposed pathological role of mTOR dysregulation in depressive disorders and confirm some previous data on the positive effects of mTOR inhibition in cognitive decline. We also show that EVR, possibly through mTOR inhibition, may be linked to the development of anxiety. The increased hippocampal neurogenesis by EVR might explain its ability to improve cognitive function or protect from cognitive decline. Our findings suggest some caution in the use of EVR, particularly in the developing brain; patients should be carefully monitored for their psychiatric/neurological profiles in any clinical situation where an mTOR inhibitor and in particular EVR is used e.g. cancer treatment, TSC or immunosuppression

    Synthesis, biological activity, pharmacokinetic properties and molecular modelling studies of novel 1H,3H-oxazolo[3,4-a]benzimidazoles: non-nucleoside HIV-1 reverse transcriptase inhibitors

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    New 1H,3H-oxazolo[3,4-a]benzimidazoles (OBZs) were synthesized as HIV-1 non-nucleoside reverse transcriptase inhibitors (NNRTI) to extend the structure-activity relationships observed for an early series of related 1H,3H-thiazolo[3,4-a]benzimidazole derivatives (TBZs). The new compounds showed inhibitory activity against the replication of various HIV-1 strains, including NNRTI-resistant strains. Testing of a representative OBZ derivative in an HPLC assay on biological fluids, indicated that the sulphur substitution appreciably improved the metabolic stability of the TBZ compound. In addition, molecular modelling studies demonstrated that OBZs, TBZs and other NNRTIs have similar structural properties, that is a butterfly-like conformation, which is a key structural requirement for reverse transcriptase inhibition

    Methodological challenges in the transition towards online audience research

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    This review of the literature published between 2005 and 2014 presents an overview of the methodological environment in which audience research is transiting towards the study of online audiences. Online audience research is a mix of long-established research rationales, methodical adaptations, new venues and convergent thinking. We discuss four interconnected, and sometimes contradictory, methodological trends that characterize this current environment: 1) the expansion of online ethnography and the continued importance of contextualization, 2) the influence of big data and an emphasis on uses, 3) the reliance on mixed methods and the convergence of different rationales of research, and 4) the ambiguous nature of online data and the ethical considerations for the conduct of research. In spite of a massive research activity, there remain gaps and underprivileged areas that call for a re-prioritization of research. In the conclusion of this paper, we offer recommendations to orient future research.COMPETE: POCI-01-0145-FEDER-0075

    (Z)-2-(4-Chloro­benzyl­idene)benzo[d]thia­zolo[3,2-a]imidazol-3(2H)-one

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    The mol­ecule of the title compound, C16H9ClN2OS, is approximately planar, the dihedral angle between the thia­zolo[3,2-a]benzimidazole ring system and the 4-chloro­phenyl ring being 2.10 (5)°. An intra­molecular C—H⋯S inter­action generates an S(6) ring motif. In the crystal, mol­ecules are stacked into columns along the b axis by π–π inter­actions with centroid–centroid distances of 3.6495 (7)–3.9546 (8) Å

    One-step isolation and biochemical characterization of a highlyactive plant PSII monomeric core

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    We describe a one-step detergent solubilization protocol for isolating a highly active form of Photosystem II (PSII) from Pisum sativum L. Detailed characterization of the preparation showed that the complex was a monomer having no light harvesting proteins attached. This core reaction centre complex had, however, a range of low molecular mass intrinsic proteins as well as the chlorophyll binding proteins CP43 and CP47 and the reaction centre proteins D1 and D2. Of particular note was the presence of a stoichiometric level of PsbW, a low molecular weight protein not present in PSII of cyanobacteria. Despite the high oxygen evolution rate, the core complex did not retain the PsbQ extrinsic protein although there was close to a full complement of PsbO and PsbR and partial level of PsbP. However, reconstitution of PsbP and PsbPQ was possible. The presence of PsbP in absence of LHCII and other chlorophyll a/b binding proteins confirms that LHCII proteins are not a strict requirement for the assembly of this extrinsic polypeptide to the PSII core in contrast with the conclusion of Caffarri et al. (2009)
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