The wear of pipelines, used in slurry transport, results in high costs for maintenance and replacement. The wear mechanism involves abrasion, corrosion, impact, and the interaction among them. In this work, we study the effect of impact on the wear mechanism and wear rate. Results show that when the effect of impact is small, the wear mechanism is dominated by electrochemically induced surface ...

Introduction The clinical laboratory is regularly faced with the task of establishing the causes of non-diabetic melituria. These causes may be: physiological for neonates ], caused by hereditary defects of carbohydrate metabolism [2], brought about by congenital or acquired deficiencies of disaccharidases.[3], or an abnormal sugar excretion may be found with enteritis [4]. The necessary analys...

Thermochemical cycles that split water into stoichiometric amounts of hydrogen and oxygen below 1,000 °C, and do not involve toxic or corrosive intermediates, are highly desirable because they can convert heat into chemical energy in the form of hydrogen. We report a manganese-based thermochemical cycle with a highest operating temperature of 850 °C that is completely recyclable and does not in...

~ by Carrie Wyse, Tadaharu Watanabe, Dan Fraenkel, Robert Torres and Virginia Houlding particle filters. This helps minimize corrosion and degradation of expensive components, and removes particles shed due to mechanical devices (e.g. valves). However, moisture purifiers do not eliminate the problem of molecular metal contaminants, which pass through particle filters. Corrosive gases, such as H...

Sodium hydroxide (NaOH) is well known for its corrosive properties and its ability to generate heat on contact with water. The respiratory effects of industrial exposure to NaOH have, however, never been reported. A 63 year old man worked daily for 20 years cleaning large industrial jam containers by boiling lye (NaOH) solution without using respiratory protective equipment. Physical examinatio...

Chronic corrosive strictures of the upper cervical esophagus and hypopharynx resulting from ingestion of caustic substances are a challenging surgical entity when repeated endoscopic dilatations fail to yield satisfactory results. Restoring the continuity of the upper digestive tract by esophageal substitution at healthy tissue margins not only compromises the integrity of the swallowing mechan...

Integral nickel–phosphorus (NiP) resistors were fabricated on flexible polyimide (PI) substrates by electroless NiP deposition. The deposition process was first set up for standard rigid epoxy substrates and then modified for the flexible substrates. The effects of the PI surface modifications on the interfacial adhesion (NiP/PI) were measured experimentally by the pull-off method. The process ...

Background:. The aim of the study is to analyze and compare the Quality of life (QoL)following the two different reconstructive surgeries viz. gastric pull up and interposition coloplasty undertaken for patients with corrosive injuries of the esophagus at the end of the first post operative month and year. Patients and Methods: Between August 2008 and December 2015, 56 patients underwent recons...