2,910 research outputs found
AEGIS: Enhancement of dust-enshrouded star formation in close galaxy pairs and merging galaxies up to z similar to 1
No full textalpha-Phenyl-n-tert-butyl-nitrone Attenuates Lipopolysaccharide-induced Brain Injury and Improves Neurological Reflexes and Early Sensorimotor Behavioral Performance in Juvenile Rats
No full textAutophagic-lysosomal perturbation enhances tau aggregation in transfectants with induced wild-type tau expression
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Immediate and long-term efficacy of laterally-wedged insoles on persons with bilateral medial knee osteoarthritis during walking
No full textBackground: The current study aimed to investigate the immediate and long-term effects of laterally-wedged (LW) insoles on the knee loadings, the knee abductor moment (KAM) in particular, and the compensatory changes at other lower limb joints in patients with bilateral medial knee osteoarthritis during level walking with and without LW insoles. ;Methods: Older adults with bilateral medial knee OA (age 66 +/- 5.3 years; height 156 +/- 4.9 cm; mass 60 +/- 5.1 kg; leg length 83.72 +/- 3.64 cm) were studied using computerized gait analysis initially (Baseline) and 6 weeks after using LW insoles (Follow-up) during barefoot walking and walking with LW insoles (7 degrees of lateral inclination, with medial arch support). The three-dimensional angles and internal moments at the lower limb joints, as well as the ground reaction forces, were obtained using a motion analysis system and two forceplates. Key features of all the variables were compared using paired t tests for immediate effects (barefoot vs. LW) and for long-term effects (Baseline vs. Follow-up). The symptomatic severity (WOMAC Index) was also evaluated (Baseline vs. Follow-up). ;Results: The KAM with LW insoles at Baseline was significantly reduced when compared to the barefoot condition (p < 0.05), suggesting that the LW insoles were effective in reducing unfavorable loadings at the knee immediately upon wearing the insoles. After 6 weeks of wearing LW insoles (Follow-up), no significant changes were found in most of the biomechanical variables, including KAM (p > 0.05), when compared to Baseline with LW insoles. However, a specific gait adaptation with reduced knee loading was revealed when walking without LW insoles, i.e., for the barefoot condition (p < 0.05). ;Conclusions: After long-term use of LW insoles, the pain and physical function were improved with decreased peak KAM. A specific gait adaptation with reduced KAM was also found when walking without LW insoles. These results indicate a positive long-term effect in persons with bilateral medial knee OA, both as an orthosis to assist walking, and as a treatment intervention to facilitate gait adaptations in favor of reduced KAM
3D-printing Ag-line of front-electrodes with optimized size and interface to enhance performance of Si solar cells
No full textThe power conversion efficiency (PCE) of a Si solar cell strongly depends on the line width (LW) of the Ag front electrode lines and the quality of the Ag/Si interface (ASI). However, the correlation between these two aspects and the cell efficiency has not been systematically investigated before because of the difficulty to control the LW of the electrode line. In this work, a self-designed 3D-printing equipment was built. Based on it, we implement the printing of electrode lines with the controllable LW by systematically investigating various parameters, including the rheological characteristics of the silver paste and the printing parameters, such as nozzle inner diameter, pressure, stage speed and gap between nozzle and wafer. When applying electrode lines with different LWs on Si solar cells, a nearly linear relationship between the cell efficiency and the LW was found. Notably, a LW of 40 mm was achieved by using a nozzle with the inner diameter of 100 mm and controlling the printing parameters. When 3D-printed Ag front electrode lines with the LW of 40 mm were applied on Si solar cells, an about 1% efficiency improvement was implemented compared with the industrial Si solar cell. This efficiency improvement not only originated from the increasing radiation area by the narrower LW, but more importantly from the optimized ASI confirmed by the sectional TEM images. This study provides helpful guidance for future fabrication of front electrodes with optimized LW and ASI to improve the PCE of Si solar cells.Guangdong Innovation Team Project [2013N080]; Shenzhen Science and Technology Research Grant [JCYJ20140903101633318]; Shenzhen Science and Technology Research Grant (peacock plan) [KYPT20141016105435850]SCI(E)[email protected]; [email protected]
Effectiveness of sensory processing strategies on activity level in inclusive preschool classrooms
No full textChien-Lin Lin,1,2 Yu-Fan Min,3 Li-Wei Chou,1,2,* Chin-Kai Lin,4,* 1Department of Physical Medicine and Rehabilitation, China Medical University Hospital, Taichung, Taiwan; 2School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan; 3Faith, Hope and Love, Center for Children and Adults With Disabilities, Taichung, Taiwan; 4Program of Early Intervention, Department of Early Childhood Education, National Taichung University of Education, Taichung, Taiwan*These authors contributed equally to this workBackground: The purpose of this study was to investigate the effectiveness of sensory processing strategies in improving the activity level of children with sensory integration dysfunction.Methods: The study used a matching-only pretest&ndash;posttest control group design, which requires random matching of sensory integration dysfunction to the corresponding intervention group (n = 18) and control group (n = 18). The intervention group comprised 3&ndash;6-year-old children who received an 8-week school-day intervention during implementation of the theme curriculum.Results: The 8-week treatment significantly reduced the activity level and foot-swinging episodes in children with sensory integration dysfunction, and obtained a medium-effect size. However, the level of improvement in the control group did not show any statistically significant change.Conclusion: Sensory processing strategies could improve activity levels in children with sensory integration dysfunction. However, this study was unable to exclude a developmental effect. The social validity results show that sensory processing strategies can be integrated into the theme curriculum and improve activity levels in children.Keywords: activity level, preschool inclusive classroom, sensory integration dysfunction, sensory processing strateg
Impacto del campo electromagnético de onda sinusoidal a 60 HZ en el cultivo de frijol caupí (Vigna unguiculata LW).
No full textLa presente investigación se desarrolló en la ciudad de Tarapoto con la finalidad de determinar la influencia del campo electromagnético de onda sinusoidal a frecuencia de 60 Hz en el crecimiento del cultivo de frijol caupí (Vigna unguiculata LIN). Con este fin se ejecutó el experimento con 06 tratamientos que fueron: la aplicación de campos magnéticos de 5ut (T1) y 1OOuT (T2), campo eléctrico de 5 Kv/m (T3) y campos electromagnéticos de 5uT+5Kv/m (T4) y 100uT+5Kv/m (T5) y un testigo (T6); todos ellos en forma continua durante la ejecución del experimento. Estos tratamientos fueron dispuestos en un diseño experimental completamente al azar en 4 repeticiones. Como cultivo indicador se sembró el frijol caupí (Vigna unguiculata LW) en maceteros de plásticos de 6 litros de capacidad. De esta manera se encontró que la aplicación continuada de campos electromagnéticos de frecuencia a 60 Hz, afecta la actividad biológica del cultivo de frijol caupí (Vigna unguiculata LW); siendo más notoria en la fase de floración y llenado de vainas; también el campo magnético de 1OOuT de onda sinusoidal a 60Hz, recomendado por la Comisión Internacional para la Protección contra las Radiaciones No lonizantes ICNIRP, no está dentro del límite permisible para el cultivo de frijol caupí. Asimismo se encontró que el campo eléctrico de 5 Kv/m, si está dentro del límite permisible y el campo magnético genera mayor impacto negativo que el campo eléctrico a frecuencia de 60 Hz.Tesi
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