Two processes for extracting alumina from low-grade ores are described, one applicable to both clays and high-silica bauxites, and the other only to bauxites. In the former process, a line-containing sinter is prepared and annealed by cooling it slowly through the range of 1,3000 to 1,2000 C. The annealed sinter dusts to a powder which requires no grinding. This material is extracted with a sol...

effects of drought stress and chemical treatments was studied on growth and developmental traits of four barley cultivars using a split- split plot design (rcbd) in agricultural research farm, kerman university in 2013-14. main plots consisted of irrigation (control and drought stress after flowering), sub-plots consisted of four barley cultivars (ʻnosratʼ, ʻafsalʼ, ʻyousofʼ and ʻuh12 lineʼ) an...

F luoride varnish is a valuable tool in the prevention of tooth decay. Studies have demonstrated its effectiveness at arresting early cavitated lesions, remineralizing interproximal incipient smooth surface lesions and preventing caries. Medical personnel in many public health clinics now are applying these varnishes in an attempt to minimize treatment needs and reduce accessto-care problems. S...

Recent protest movements brought attention to the one percent, a segment of the population that is critical to understanding inequality and social mobility but that attracts relatively little research attention. In this article, I survey current research on the one percent in the United States. I distinguish income from wealth and show that both are very concentrated but that the concentration ...

The pharmacological treatment of migraine may be acute or preventive. Frequent, Severe, complicated and long lasting migraine attacks, more than 2 attacks in month require prophylaxis. Traditional preventive drugs such as ?-Blockers, antidepressants, calcium blockers and anticonvulsants, despite their documented efficacy, have many side effects. This study was conducted to determine the effect ...