Abstract To develop innovative mesoporous crosslinked poly(azomethine- sulfone)s with environmental applications, Cable Retainer a simple Schiff base condensation technique based on barbituric acid BA or condensed terephthaldehyde barbituric acid TBA in their structures as monomeric units are applied.Different analysis methodologies and viscosity m
With the rapid development of oil and gas industry, as well as geological exploration industry, the requirements on properties of aluminum alloy drill pipes are increasing.During heat assembly of aluminum alloy drill pipes, the cooling process inside the pipes has a direct impact on the connection performance of pipes.Thus, study of the convective
ntroduction: Many people suffer from vertigo.Its origin in 85% of cases is otological while in 15% is central etiology.Benign paroxysmal positional vertigo (BPPV) is the most common cause of the true vertigo.In this research we evaluated the risk factors of acute attack of BPPV.Materials and Methods: This study was performed on 322 patients, presen