Continuous SiC reinforced aluminum composites (3D-SiC/Al) have higher thermal conductivities and lower coefficients of thermal expansion (CETs) www.selleckchem.com/products/lcl161.html than those of particulate SiC reinforced aluminum composites (SiCp /Al) with the same SiC volume fraction. The co-continuous structures of both the SiC reinforcement and the Al matrix in 3D-SiC/Al can be the reason behind
this phenomena. As a result, when SiC volume fraction values were the same, 3D-SiC/Al composites will be more suitable for electronic packaging applications comparing with SiCp/Al composite. (c) 2013 Elsevier Ltd. and Techna Group S.r.l. All rights reserved.”
“Background: Uncorrected refractive errors are the main cause of vision impairment in school-aged children. The current study focuses on the effectiveness of school eye screening in correcting
refractive errors. Objectives: 1. To study the magnitude of visual impairment among school children. 2. To assess the compliance of students for refraction testing, procurement and use of spectacles. Materials and Methods: An intervention study was conducted in schools of the north-west district of Delhi, in the rural field practice area of a medical college. Students studying in five government schools in the field practice area were chosen as the study subjects. Results: Out of 1123 students enrolled, 1075 (95.7%) students were screened for refractive errors. Low vision (visual acuity <20/60) in MG-132 solubility dmso the better eye was observed in 31 (2.9%) children INCB28060 inhibitor and blindness (visual acuity <20/200) in 10 (0.9%) children. Compliance with referral for refraction was very low as only 51 (41.5%) out of 123 students could be tested for refraction. Out of 48 students, 34 (70.8%) procured spectacles from family resources but its regular
use was found among only 10 (29.4%) students. The poor compliance among students stems out of various myths and perceptions regarding use of spectacles prevalent in the community. Conclusion: Refractive error is an important cause of avoidable blindness among rural school children. Behavior change communication among rural masses by spreading awareness about eye health and conducting operational research at school and community level to involve parent’s teachers associations and senior students to motivate students for use of spectacles may improve utilization of existing eye health services in rural areas.”
“Previously, we found a significant association between photosystem II efficiency (I broken vertical bar PSII) and photochemical reflectance index (PRI) measured at predawn among different species at different elevations and throughout several seasons. However, this relationship has not been evaluated under varied levels of illumination. Here, we used the Taiwan species Pinus taiwanensis (a conifer distributed at 750-3,000 m a.s.l.), Stranvaesia niitakayamensis (an evergreen tree, 1,700-3,100 m) and two Miscanthus spp.