in asthmatic subjects there is a pronounced diurnal variation in bronchial responsiveness. if this phenomenon is due to variation in factors that control drug delivery, then it should be paralleled by a similar variation in competitive antagonist blockade. in order to study this possibility, we performed the methacholine challenge test and after 45 minutes, administered atropine by inhalation. ...

this study identifies and compares the antecedent of nigerian students’ perception on business social responsibility. part of its objectives is to examine the perception of business students in terms of importance of business social responsibility with respect to profitability, and the effectiveness of social responsibility in both long and short terms. the study reviews the related literature ...

BACKGROUND We conducted a retrospective study to determine the effect of oral sildenafil administrated as monotherapy after Fontan operation in single ventricle physiology. METHODS From January 2008 to March 2012, during two different periods, a total of 30 pediatric patients undergoing Fontan operation by extracardiac conduit were included in this study. Thirteen patients were in the sildena...

The paper describes the use of an advanced optimization tool for short term scheduling of hydro power systems. The tool takes into account mixed-integer formulation and hence, startup costs for the start-up of units can be accounted for. The goal has been to quantify the improvements in cost reduction by using such a tool, and to see how this will influence upon the daily production planning. T...

An integrated model is developed for short-term yearly reservoir operation for irrigation of multiple crops. The model optimizes a measure of annual crop production, starting from the current period in real time. Reservoir storage at the beginning of a period, inflow during the previous period, crop soil moisture values and crop production already achieved up to the beginning of the period are ...

this paper tries to evaluate the nature of open market operation in the conventional banking system and to compare the usage of government securities and central bank securities for conducting this operation. in addition, the experience of the iranian central bank in using central bank musharakah certificates is reviewed. the main results of the paper, derived from an analytical- descriptive ap...

the purpose of this study was twofold: (a) to assess the retention of two word types (synonyms and homonyms) in the short term memory, and (b) to investigate the effect of these word types on word learning by asking learners to learn their persian meanings. a total of 73 iranian language learners studying english translation participated in the study. for the first purpose, 36 freshmen from an ...