Extended thermal annealing treatments were used to modify the B-site cation order in the (1-x)PMN (x)PSN perovskite system. Extensive 1:1 ordering could be induced in compositions with x ≥ 0.1. The substitution of PSN into PMN produces a large increase in the thermal stability of the 1:1 ordered phase, with the maximum disordering temperature of ~1360°C being observed for x = 0.5. The order-dis...

Several of the fourteen rare-earth element (plus Sc and Y) orthophosphate standards grown at Oak Ridge National Laboratory in the 1980s and widely distributed by the Smithsonian Institution's Department of Mineral Sciences, are significantly contaminated by Pb. The origin of this impurity is the Pb2P2O7 flux that is derived from the thermal decomposition of PbHPO4. The lead pyrophosphate flux i...

Purpose: To analyse the barriers to the uptake of cataract surgery in patients aged over 50 years in a rural set up and suggest possible remedial measures. Methods: Sixty one clusters of 50 people aged over 50 years were selected by probabilityproportionate to size sampling. All participants were evaluated using standard Rapid Assessment of Avoidable Blindness ( RAAB ) methodology. People with ...

This study was conducted for determining the conditions of hooks after fishing operations in May 2011 – June 2012 on the coasts of Dardanelles Strait and Gallipoli Peninsula. Twenty longline operations with three replication were carried out between 5 and 500 m sea depth. Each longline consisted of 200 hooks. 60000 m of fish line was outspread with a total of 12000 hooks and a total of 1360 ind...

Aim: To describe trends over time and types of disability for children born in a French county from 1980 to 1991. Methods: Data were collected from medical records of a morbidity register; disabled children with at least one severe deficiency have been included. Prevalence rates are given per 1000 resident children, over four three-year periods. Results: Overall, 7.73 per 1000 children (that is...

The amounts of oxygen prescribed by general practitioners in each of 90 family practitioner committee areas of England in 1977-9 were compared using data supplied by the Prescription Pricing Authority and were matched with published mortality statistics for these areas. The annual number of 1360-litre cylinders supplied per thousand population ranged among family practitioner committees from 3....