912 research outputs found

    Kinetics of low pressure ammonia oxidation over Rh(111)

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    The kinetics of the NH3 + O2 reaction over a Rh(111) single crystal catalytic surface was explored in the 10-6 mbar pressure range at tempera-tures between 300-900 K. Selectivity towards N2 and NO products, and reactive sticking coefficients were monitored in situ using differentially pumped quad-rupole mass spectroscopy (QMS). © 2018, Latin American Applied Research

    Adenovirus type 5 E4 Orf3 protein targets promyelocytic leukaemia (PML) protein nuclear domains for disruption via a sequence in PML isoform II that is predicted as a protein interaction site by bioinformatic analysis

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    Human adenovirus type 5 infection causes the disruption of structures in the cell nucleus termed promyelocytic leukaemia (PML) protein nuclear domains or ND10, which contain the PML protein as a critical component. This disruption is achieved through the action of the viral E4 Orf3 protein, which forms track-like nuclear structures that associate with the PML protein. This association is mediated by a direct interaction of Orf3 with a specific PML isoform, PMLII. We show here that the Orf3 interaction properties of PMLII are conferred by a 40 aa residue segment of the unique C-terminal domain of the protein. This segment was sufficient to confer interaction on a heterologous protein. The analysis was informed by prior application of a bioinformatic tool for the prediction of potential protein interaction sites within unstructured protein sequences (predictors of naturally disordered region analysis; PONDR). This tool predicted three potential molecular recognition elements (MoRE) within the C-terminal domain of PMLII, one of which was found to form the core of the Orf3 interaction site, thus demonstrating the utility of this approach. The sequence of the mapped Orf3-binding site on PML protein was found to be relatively poorly conserved across other species; however, the overall organization of MoREs within unstructured sequence was retained, suggesting the potential for conservation of functional interactions

    I Say “no”. You Say “it Isn't”. About a New Understanding of the Concept of Negation

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    Introduction: In our opinion there is still confusion about the exact meaning of the term negation. As a consequence of this the importance of negation in the psychotherapeutic work is until now underestimated. Objectives For psychiatrists who work according to Fagioli's human birth theory the concept of negation is fundamental. Negation is a notion that refers to unconscious reality. Aims: The task of the psychiatrist is to identify and to interpret the negation in the deformed dream images during the psychotherapeutic process. Methods: In contrast to an intentional lie, which is communicated through verbal speech, negation corresponds to unconscious thoughts, which we can find in dreams. During sleep a transformation occurs, language is altered and expressed through images. Negation deforms the image. This deformation of the image happens in an unconscious process. This negation distorts the reality of the patient and his ability to interact with the other. Corresponding the relationship will be aggressive/destructive. The only way to identify this deformation is dream interpretation. Results: Through this therapeutic process the patient will be able to intuit and realize instead of negate the positive qualities of the other and integrate these into his reality. Only human interaction that is free from negation enable the patient to overcome the ideo-affective splitting, which allows recovery of positive affects and the possibility of developing evolutive relationships. Conclusions: Only a clarification of the term negation allows a psychotherapeutic process with the aim of developing evolutive relationships
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