959 research outputs found
The Use of Sustainable Agronomic Practices and Grazing to Manage Organic Olive Orchards in Western Australia
Effects of electronic correlation on X-Ray absorption and dichroic spectra at L edge
We present a new theoretical approach to describe X-Ray absorption and
Magnetic Circular Dichroism spectra in the presence of e-e correlation. Our
approach provides an unified picture to include correlations in both charged
and neutral excitations, namely in direct / inversion photoemission where
electrons are removed/added, and photo absorption where electrons are promoted
from core levels to empty states. We apply this approach to the prototypical
case of L edge of 3 transition metals and we show that the inclusion
of many body effects in the core level excitations is essential to reproduce,
together with satellite structures in core level photoemission, the observed
asymmetric line shapes in X-ray absorption and dichroic spectra.Comment: 3 figures, 5 pages, submitted to Phys. Rev.
Late childhood interpersonal callousness and conduct problem trajectories interact to predict adult psychopathy
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/135659/1/jcpp12598_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/135659/2/jcpp12598.pd
Long-term cognitive and behavioral therapies, combined with augmentative communication, are related to uncinate fasciculus integrity in autism
Recent evidence points to white-matter abnormalities as a key factor in autism physiopathology. Using Diffusion Tensor Imaging, we studied white-matter structural properties in a convenience sample of twenty-two subjects with low-functioning autism exposed to long-term augmentative and alternative communication, combined with sessions of cognitive and behavioral therapy. Uncinate fasciculus structural properties correlated significantly with therapy length and early onset, as well as to clinical outcome, independently from IQ, age or symptoms severity at therapy onset. Moreover, adherence to therapy was linked with better clinical outcome and uncinate fasciculus structural integrity. The results point to the capability of a long-term rehabilitation of subjects with low-functioning autism to produce white-matter structural modifications, which could thus play a role in the rehabilitative outcome
Total Synthesis of Asparenydiol by Two Sonogashira Cross-Coupling Reactions Promoted by Supported Pd and Cu Catalysts
Asparenydiol, which is an important natural compound with potential pharmacological activities, was synthesized through two Sonogashira cross-coupling reactions catalyzed by supported Pd and Cu catalysts and by a Mitsunobu etherification. The optimization of the Sonogashira couplings allowed the use of catalysts supported on different matrices with good results in terms of catalytic efficiency and yields
Brain activity pattern changes after adaptive working memory training in multiple sclerosis
Cognitive impairment and related abnormal brain activity are common in people with multiple sclerosis (PwMS). Adaptive
training based on working memory (WM) has been shown to ameliorate cognitive symptoms, although the effects at a neural
level are unclear. The aim of this study was to expand the existing research on the effects of an adaptive WM rehabilitative
intervention on brain functional activity in PwMS. A sample of eighteen PwMS performed an 8-week home-based cognitive
rehabilitation treatment based on adaptive WM training. PwMS were assessed before and after treatment using a validated
neuropsychological battery and undergoing an fMRI session while carrying out a cognitive task (i.e., Paced Visual Serial
Addition Test - PVSAT). fMRI activations were compared to the activation pattern elicited by eighteen matched healthy subjects
performing the same task. At baseline, we found abnormal brain activity during PVSAT in PwMS when compared to healthy
subjects, with a pattern including several bilateral activation clusters. Following rehabilitation, PwMS improved cognitive
performance, as evaluated by the neuropsychological battery, and showed a different activation map with clusters mainly located
in the right cerebellum and in the left hemisphere. The only significant cluster in the right hemisphere was located in the inferior
parietal lobule, and the BOLD signal extracted in this area significantly correlated with cognitive performance both before and
after the treatment. We suggest that WM training can improve the cognitive performance and reduce the abnormal activation of
PwMS by partially maintaining or even restoring brain cognitive function
Hunting and bushmeat consumption in post-frontier landscapes in eastern Amazonia: The importance of large-scale environmental driver.
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