This paper introduces the composition and working principle of field service gas flow standard device based on meter. Through analysis uncertainty verification measurement results, it is confirmed that meter method can be applied to flowmeter.

standard protocols should be established for treating eligible stroke patients with tissue plasminogen activator (tpa) (recommendation class i, level of evidence b). the iranian standard protocol of intravenous thrombolysis with recombinant tissue plasminogen activator (ivttpa) is the best possible and easy to use method for performing intravenous thrombolysis in iran. this protocol overcomes p...

failure to thrive (ftt) is a perplexing disorder commonly seen by primary care physicians. identification of ftt and an assessment of severity of the undernutrition are important to identify children at risk, and to provide appropriate intervention for preventing malnutrition and developing sequela. one of different anthropometric methods for categorizing undernutrition in childhood is waterlow...