prediction of climatic variables on a local scale by general circulation models of the atmosphere is impossible because the models have large-scale network of resolution. therefore, downscaling methods are used to solve this problem. since the climate change phenomenon can affect different systems such as, water resources, agriculture, environment, industry and economy as well, selection of the...

BACKGROUND Multiple sclerosis (MS) is a chronic inflammatory disease of central nervous system (CNS) and is the most common cause of neurologic disability in young adults (20-40 years old). About 2.5 million patients all over the world are suffering from MS. Common symptoms of the disease include sensory disorders, optic neuritis, and limb weakness. Following disease progression, other symptoms...

Nitrogen is one of the most important factor affecting maize (Zea mays L.) yield and income of smallholders under semiarid climates. Field experiments were conducted to investigate the impact of different N-fertilizer sources [urea, calcium ammonium nitrate (CAN), and ammonium sulfate (AS)] and rates (50, 100, 150, and 200 kg ha-1) on umber of rows ear-1 (NOR ear-1), number of seeds row-1 (NOS ...