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Two cyano oligo-phenylene-vinylenes [α-CNOPV and β-CNOPV] distinguished by the position of cyano (CN) group at the vinylic double bond were synthesized. The acceptor oligomer CNOPVs were blended with poly(2-methoxy-5-(2′-ethyl-hexyloxy)-p-phenylenevinylene) MEH-PPV to achieve α and β blends. The pronounced influence of cyano position on the photophysical and morphological properties of blends was...
To determine the prevalence and causes of visual impairment in the Meiktila district of central, rural Myanmar.Population-based cross-sectional study.Random, stratified, cluster sampling of the inhabitants 40 years of age and older from villages in the Meiktila district was performed; 2481 eligible participants were identified and 2076 participated in the study.The ophthalmic examination included...
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