1,273 research outputs found

    In vivo super-resolution of the brain - How to visualize the hidden nanoplasticity?

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    Super-resolution fluorescence microscopy has entered most biological laboratories worldwide and its benefit is undisputable. Its application to brain imaging, for example in living mice, enables the study of sub-cellular structural plasticity and brain function directly in a living mammal. The demands of brain imaging on the different super-resolution microscopy techniques (STED, RESOLFT, SIM, ISM) and labeling strategies are discussed here as well as the challenges of the required cranial window preparation. Applications of super-resolution in the anesthetized mouse brain enlighten the stability and plasticity of synaptic nanostructures. These studies show the potential of in vivo super-resolution imaging and justify its application more widely in vivo to investigate the role of nanostructures in memory and learning

    Ultrafast heterogeneous electron transfer reactions Comparative theoretical studies on time and frequency domain data

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    Recent theoretical studies on linear absorption spectra of dye semiconductor systems perylene attached to nanostructured TiO2, L. Wang et al., J. Phys. Chem. B 109, 9589 2005 are extended here in different respects. Since the systems show ultrafast photoinduced heterogeneous electron transfer the time dependent formulation used to compute the absorbance is also applied to calculate the temporal evolution of the sub 100 fs charge injection dynamics after a 10 fs laser pulse excitation. These studies complement our recent absorption spectra fit for two perylene bridge anchor group TiO2 systems. Moreover, the time dependent formulation of the absorbance is confronted with a frequency domain description. The latter underlines the central importance of the self energy caused by the coupling of the dye levels to the semiconductor band continuum. The used model is further applied to study the effect of different parameters such as 1 the dependence on the reorganization energies of the involved intramolecular transitions, 2 the effect of changing the transfer integral which couples the excited dye state with the band continuum, and 3 the effect of the concrete form of the semiconductor band density of states. Emphasis is also put on the case where the charge injection level of the dye is near or somewhat below the band edge. This nicely demonstrates the change from a structureless absorption to a well resolved vibrational progression including characteristic shifts of the absorption lines which are a direct measure for the dye semiconductor couplin

    Reflections on Presumed Incompetent: The Intersections of Race and Class for Women in Academia Symposium--The Plenary Panel

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    Presumed Incompetent was produced thanks to the vision and commitment of its editors: Dr. Gabriella Gutiérrez y Muhs, Dr. Yolanda Flores Niemann, Carmen G. González, and Angela P. Harris. This symposium came to fruition because the Berkeley Journal of Gender, Law & Justice invited the two law professor editors, Professor Harris and Professor González, to convene a distinguished group of scholars from Canada and the United States to expand and deepen the conversation initiated by the book. The very successful day-long symposium and the publication of the resulting articles were made possible by the resources, time, and dedication provided by the University of California Berkeley School of Law, the Berkeley Journal of Gender, Law & Justice, the Seattle Journal for Social Justice, the Thelton E. Henderson Center for Social Justice, and the generous support of the law firm of Munger, Tolles & Olson. Finally, the audience, a mix of academics and students, supported the symposium and traveled from all over the United States to attend and be a part of a historical event where we acknowledged the pain and victories of colleagues, and recognized that there is still much work to be done. The plenary panel proceeded as follows. First, the panelists gave brief opening remarks about their chapters, followed by a question and answer portion, and ended with my closing remarks. Members of the audience submitted questions once the plenary panel discussion began. While this Article is not a verbatim transcript of the plenary panel, all the questions are the same ones posed during the panel. The remarks and answers included here follow a semi-transcript format that allowed the moderator and panelists an opportunity to elaborate further on some of the comments and responses

    Using online blogs to explore positive outcomes after burn injuries

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    This study uses blog analysis, a new and novel technique, to explore the positive outcomes experienced by burn survivors. This study examined 10 burn survivor blogs to offer a unique, longitudinal insight into burn survivor recovery. Using thematic analysis, three themes emerged: shift in self-perception, enhanced relationships and a change in life outlook. Many of these themes contained stories and experiences unique to a traumatic burn injury, suggesting that standardised trauma scales are not effectively measuring the impact of a burn in this population. Reflections on blog analysis are discussed, along with a recommendation that health researchers utilise the vast amount of data available from online blogs

    Parental behaviour in paediatric chronic pain: A qualitative observational study

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    Parental behaviour appears to influence the adjustment of children with chronic pain. However, research in this area has failed to produce consistent evidence. Studies have tended to rely on self-report measures derived from adult pain populations. This qualitative, observational research provides descriptive data of parental behaviour in a clinical environment. A qualitative observational study was made of parents and adolescents in a physically stressful setting. Modified grounded theory was used to analyse verbal and non-verbal behaviours. Eight parent–adolescent dyads seeking treatment for chronic pain were videoed during physical exercise sessions. Verbal and non-verbal behaviours were recorded and transcribed. Four overarching categories emerged: ‘monitoring’, ‘protecting’, ‘encouraging’ and ‘instructing’. These often had both verbal and non-verbal aspects. Within these categories, more precise behavioural groups were also identified. This research identifies categories of parental behaviour that were derived directly from observation, rather than imposed on the basis of results from different populations. Four categories of behaviour were derived, which clarify and extend dimensions used in existing self-report instruments. Careful description of parental behaviours showed features that past research has neglected, and highlighted potential drawbacks of apparently positive parental actions
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