in this study, a generalized equation is presented to calculate vapor pressure of pure substances as a function of reduced temperature, critical pressure, and acentric factor. with the presented model, vapor pressures have been calculated and evaluated with nist data bank for 70 pure substances for about 14000 data points, and the overall average absolute percentage deviation has been only 0.78...

Wetland ecosystems straddle both terrestrial and aquatic habitats, performing many ecological functions directly and indirectly benefitting humans. However, global wetland losses are substantial. Satellite remote sensing and classification informs wise wetland management and monitoring. Both pixeland object-based classification approaches using parametric and non-parametric algorithms may be ef...

Magnitude comparison tasks are used to assess the precision of numerical representations. Recent research, however, questions the validity of different measures of magnitude comparison. We investigated the validity of five performance measures: overall RT, overall accuracy, numerical ratio effect (RT), numerical ratio effect (accuracy), and Weber fraction. Kindergarten and university students c...

Strides in information technology and improvements in networking technology have set the pace for rapid growth in new applications of electronic commerce in a variety of settings. Business to business (B2B), business to customer (B2C), customer to business (C2B), and customer to customer (C2C) have become prevalent business channels and have reshaped the ways that business transactions are cond...

The present study aims to trace the long term effects of different types of feedback--direct, indirect, and content-on EFL learners' writing accuracy (the major concern of SLA researchers) and overall writing quality (the primary aim of L2 writing researchers). Data was gathered from three groups of Iranian EFL learners (N=44) randomly assigned to an indirect feedback, a direct feedback, and a ...

This paper extends the model in [4] to be more realistic by including the effects of the test fixtures between a device under test and a tester. The paper enables analyzing the trade-offs that arise between the predicted yield and the required overall test environment timing accuracy (OTETA) which involves the tester overall timing accuracy (OTA) and the test fixtures’ impacts. We specifically ...

background: different measures of mortality and morbidity statistics is a good tool in determining the health status of a community،the health network development and application of methods of prevention and treatment. basis of mortality data is the death certificate and the most important index in death certificate is accuracy of death causes with who standards and death causes codes in icd10....

The feasibility of extractive reaction of methacrylic acid from aqueous solution using a quaternary amine, tri–octyl methyl ammonium chloride (TOMAC) as an extractant, was studied. The diluents chosen in the present work belong to different chemical classes, n–butyl acetate, carbon tetrachloride, isoamyl alcohol, methyl isobutyl ketone, and toluene. The effect of initial acid concentration in t...

Bosentan is a competitive inhibitor of endothelin receptors. In vitro, bosentan potently inhibits binding of endothelin-1 to human ET-A and ET-B receptors. Potency on ET-A receptors was only slightly greater than potency on ET-B receptors. Functionally, bosentan inhibits contractile effects of endothelin-1 in rat aorta and human blood internal mammary artery and vein. Oral administration of bos...