2 resultados para Organic field-effect transistors, Self-assembly, 1D object, Monolayer, Solution processing

em Research Open Access Repository of the University of East London.


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Previous research has suggested that dehydration may have a negative effect on some aspects of mood, cognitive performance and motor skills (Benton, 2011). Furthermore, a large proportion of children arrive at school in a dehydrated state (Baron, Courbebaisse, Lepicard, & Friedlander, 2015). The present work investigated whether supplementing children with water may, as a consequence of reducing dehydration, improve their cognitive performance and motor skills. In studies 1, 2, 3 and 5, it was found that tasks that predominantly tested motor skills, were improved in children who had a drink, compared to those who did not. Furthermore, study 3 showed that this effect was moderated by hydration status. One theoretical explanation for the poorer performance of dehydrated children is that they may lack the neurological resources to sustain their effort and thus performance does not improve over time. In support of this, these studies showed that, when re-hydrated, performance on these tasks improves to the level of non-dehydrated children. Study 2 showed that the number of errors increased in a StopSignal task in children that had high self-rated levels of thirst, compared to low levels: and hydration status did not moderate this effect. A possible explanation for the increased number of errors in children with high self-rated thirst is that the thirst sensation diverts attention away from the task, causing task performance to deteriorate. In study 4, it was observed that there was a large variation in intra-individual and inter-individual hydration scores throughout the day, which was not related to volume drank or levels of thirst. Further studies should use imaging techniques to study brain activity during dehydration and rehydration, and during periods of high thirst, to help to further elucidate the mechanism underlying the negative effect of dehydration on motor performance, and the effect of self-rated thirst on attention.

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This research examines links between intimacy and violence within the transference relationship of a three year old boy during intensive psychotherapy. Psychoanalytic clinical findings are used to examine triggers to violence that initially appeared to link with moments of emotional warmth. The research uses a retrospective single case study design. The clinical data cover a period of transition in the child's life from being a 'looked after child' in foster care to being adopted. There was a history of early trauma from neglect and domestic abuse. Clinical process notes from supervised sessions were coded using an adapted grounded theory approach to reveal complex interlinking themes of intimacy, violence, Oedipal issues, control and difficulties regulating affect. Data in this study show how intimacy and violence are linked when there is evidence of a separation between the self and the object of intimacy. Explosive violence is triggered by the threat of loss of the object and the rage is, at times directed towards the object of intimacy. The findings of this study support concepts identified by earlier research in the field about the impact of a lack of maternal containment on innate violence, associated struggles with the Oedipal complex and the impact upon the capacity for symbol formation and thinking. However, the research findings challenge Glasser's (1979) theory of the 'core complex' that suggests that intimacy triggers violence. The results of this research indicate that it is the threat to the loss of intimacy as a result of separation from the object that is the trigger to violence. I believe this study may, in a modest way, further understanding about links between violence and intimacy in human relationships. This may help other child psychotherapists be alert to certain dangers when dealing with violence in the therapy room.