chromate conversion coating is applied on aluminum 6061. the optimum conditions for chromate bath composition and immersion time are also obtained for standard requirements provision such as corrosion resistance in salt spray test, electrical resistance and coating quality. the applied coatings are electrochemically tested in sea and distilled water. according to tafel and cyclic polarization c...

hemodynamic monitoring is needed in up to 58% of patients presented to the emergency department. central venous pressure (cvp) monitoring is generally useful to assess general volume status. there are several methods of cvp measurement, which can be categorized as invasive and non-invasive. cvp manometer and electronic transducer are among the invasive methods and direct observation, ultrasonog...

introduction : pre-hospital emergency systems provide service by franco-german and anglo american models. this study was carried out to compare the iranian emergency medical service (ems) with the two models regarding timing and equipment. methods : in this cross sectional study, response time, scene time, and transport time to hospital as well as ambulance equipment of five hundred thousand te...

Conventional models for estimating electrical efficiency of data centers are grossly inaccurate for real-world installations. Estimates of electrical losses are typically made by summing the inefficiencies of various electrical devices, such as power and cooling equipment. This paper shows that the values commonly used for estimating equipment inefficiency are quite inaccurate. A simple, more a...