introduction: emergency department is one of the most important hospital wards that offers emergency services to unstable patients 24 hours a day, 7 days a week. however, the way the services are offered reflects the general status of the hospital since patients with the most serious problems frequently refer to the emergency department. emergency department waiting time is one of the indices u...

the objective of this study is to measure the city of tehran’s environmental quality in 2006 (the last census year). primarily, with a comparative analysis of a variety of urban sustainability indicator models, a collection of 54 indicators have been chosen and categorized as indicators of increase or decrease in urban environmental quality in the form of a simple mathematical model. based o...

Lateral current injection (LCI) lasers are promising candidates for optoelectronic integration and novel functional devices. We investigate experimentally the performance of a new class of LCI lasers with improved operating characteristics, focusing in particular on regions of agreement and disagreement with our physical model. We then employ fully selfconsistent two-dimensional modeling in ord...

Life Cycle Assessment (LCA) is a widely accepted method for analysing the environmental aspects of goods and services. Life Cycle Inventory (LCI) datasets document the various involved material and energy flows, forming the basis of every LCA study. Today, a plurality of databases providing LCI data exists. Data delivered by these databases has to be sound as well as suitable for the specific a...

  Background : Gestational trophoblastic neoplasia (GTN) disease is excessive and inappropriate proliferation of trophoblast after termination of the pregnancy. Many attempts have been made to improve follow-up procedures, but no studies have evaluated Human Chorionic Gonadotrophin (HCG) as a post treatment indicator. Thus we aimed to know β-HCG variability in post treatment pregnancies.   Meth...