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The use of asymmetrical strokes is common in freestyle swimming because of breathing and strength laterality. In this study, the asymmetrical freestyle swimming performance of a male elite level swimmer who breathed every second arm stroke (unilaterally) was investigated. A laser body scan and multi-angle video footage of the athlete were used to generate a swimming biomechanical model. This model was then used in a Smoothed Particle Hydrodynamics (SPH) fluid simulation of swimming through a virtual pool. The results from this study enabled the kinematic asymmetry to be related to the consequential fluid dynamic asymmetry. The intra-cyclic fluctuations in the streamwise forces and speed were also examined. Hand angles of attack were compared along with the lift and drag contributions of the hands to generating the streamwise thrust. From this study, connections between asymmetry and the resultant swimming performance were identified.Background To analysis the role of gamma knife radiosurgery (GKRS) in treatment of the recurrent or residual World Health Organization (WHO) grade II and III meningiomas.Methods Between 1995 and 2015, a total of 1163 meningioma patients were treated with GKRS at our single institute; 26 atypical and 6 anaplastic meningiomas were enrolled. The group consisted of 16 men and 16 women with a median age of 59.5 years (range 30-78 years). The median follow-up was 106.5 months (range 40-216 months). All were cases of tumour recurrence except 7 cases of residual lesions. Six patients were given fractionated radiotherapy before the initial course of GKRS (median dose, 56 Gy).Results The median tumour volume was 3035 mm3 (range 247-11400 mm3). The median prescribed dose to high grade meningioma margin was 14 Gy (range 12-20 Gy,). The median prescribed dose to WHO II and III meningioma were 14 Gy (range 12-18 Gy) and 15 Gy (range 14-20 Gy), respectively. After radiosurgery, local tumour control rate was 50%. Tumour progression was observed in 28 patients; 16 recurrences were local (12 atypical and 4 anaplastic), 8 were marginal (7 atypical and 1 anaplastic), and 4 were distal (3 atypical and 1 anaplastic). Seven patients (21.88%) developed adverse radiation effects after GKRS. WHO grade was strongly associated with survival, with grade II showing a much longer survival (p = 0.01), and a prior history of radiation was associated with decreased survival (p = 0.003). Multivariate analysis showed that WHO grade (hazard ratio, HR 5.051, p = 0.01) and prior radiation (HR 5.763, p = 0.004) were independently associated with survival.Conclusions WHO grade and a prior history of radiation therapy are reliable long-term predictors of overall outcome when treated with GKRS.Purpose A significant gender imbalance exists in the profession of speech-language pathology and the perspectives of male speech-language pathologists are underrepresented in the professional literature. This study explored the role of gender as a factor related to the academic and professional experiences of male speech-language pathologists working in the United States.Method Phenomenology was used to understand factors influencing the lived experiences of males in the profession. In-depth semi-structured interviews were collected from fifteen male speech-language pathologists and subjected to inductive thematic analysis.Result Four superordinate and thirteen subordinate themes emerged from the data. Findings suggest that males experience challenges working in a female-dominated profession. That said, males highlighted their progression towards inclusion in the profession and overall perceived their academic and professional life as positive and rewarding. Participants valued the distinctive quality of being male in a female-dominated profession and described a sense of empowerment by virtue of being male.Conclusion A gender disparity remains present in the field of speech-language pathology, which limits the ability to best serve a diverse population and creates health disparities. While participants reported many challenges working in a female-dominated profession, these obstacles appeared to motivate rather than hinder work-related performance and overall job satisfaction. The themes presented here help to develop a deeper understanding of the perspectives of males in the field and the specific factors that contribute to their experiences. Additionally, these data can inform future strategies for recruitment and retention of males in the profession.We aimed to evaluate the therapeutic effects of exosomes, which were collected from human neuroepithelial stem cells (HNESCs) treated by miR-29b mimics, on the treatment of spinal cord injury (SCI). Computational analysis, real-time PCR, Western blot analysis and TUNEL assay, a BBB score system, the Nissl staining and IHC assay were conducted to explore the molecular signalling pathway underlying the function of exosomes in SCI. Exosomes isolated from cells treated with HNESC exhibited the strongest inhibitory effect on cell apoptosis while exhibiting the highest level of miR-29b expression and the lowest levels of PTEN and caspase-3 expression. Moreover, PTEN and caspase-3 were identified as the direct target genes of miR-29b. The exosomes isolated from the groups of HNESC and HNESC + miR-29b mimics exhibited in vivo therapeutic effects by restoring the BBB score and apoptosis index of post-SCI neuron cells to those of normal neuron cells, with the exosomes collected from the group of HNESC + miR-29b mimics showing the strongest effect. We suggested that the exosomes derived from the group of HNESC + miR-29b mimics exerted therapeutic effects on SCI by down-regulating the expression of PTEN/caspase-3 and subsequently suppressing the apoptosis of neuron cells.A recent randomized controlled trial found that children with autism spectrum disorder who received a pivotal response treatment package showed improved language and social communication skills following the intervention. The pivotal response treatment package includes clinician-delivered and parent-implemented strategies. Reciprocal vocal contingency is an automated measure of vocal reciprocity derived from daylong audio samples from the child's natural environment. It may provide stronger and complementary evidence of the effects of the pivotal response treatment package because it is at lower risk for detection bias than parent report and brief parent-child interaction measures. The current study compared reciprocal vocal contingency for 24 children with autism spectrum disorder in the pivotal response treatment package group and 24 children with autism spectrum disorder in the control group. https://www.selleckchem.com/products/polybrene-hexadimethrine-bromide-.html The pivotal response treatment package group received 24 weeks of the pivotal response treatment package intervention.
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