a method for predicting liquid densities of binary mixtures from heat of vaporization and liquid densityat boiling point temperature (δhvap and n b ρ ) as scaling constants, is presented. b2(t) follows a promisingcorresponding-states principle. calculation of α(t) and b(t), the two other temperature-dependentconstants of the equation of state, are made possible by scaling. as a result δhvap and...

introduction: one of the reasons people do not refer to dental offices is anxiety over pain. preoperative education is one of non-pharmacological methods to treat anxiety. this study evaluated the effect of preoperative education on decreasing state and trait anxiety in patients referring to a dental surgery center. materials and methods: the subjects in this clinical trial consisted of all the...

the aim of the present study was to investigate whether and by which mechanism; histamine can induce state-dependent retrieval of passive avoidance task. the pre-training or pre-test intracerebroventricular (i.c.v.) injection of histamine (20µg/mouse) impaired retrieval, when it was tested 24 h later. in the animals, which retrieval was impaired due to histamine pre-training administration, pre...

background : patients undergoing pacemaker implantation often experience anxiety and fear. as such, studies have focused on the mechanisms that relieve the negative emotions caused by the intervention. continuous nursing is a safe and effective nursing mode. in this study, continuous nursing intervention was provided for elderly patients undergo-ing pacemaker implantation and an empirical inves...

north darfur state has been affected by conflict since 2003 and the government has not been able to provide adequate curative health services to the people. the government has come to rely on non-governmental organizations (ngos) to provide curative health services. this study was conducted to examine the existing collaboration between government and ngos in curative health service delivery in ...

the motive behind this study was to evaluate the iranian state university efl entrance examination test (ueeet) based on bachman and palmer’s (1996) ‘usefulness six-faceted model ‘accommodating relia- bility, validity, impact, interactiveness, authenticity, and practicality. to do so, thirty professors and one-hundred efl freshmen were selected randomly from five universities. a questionnaire c...

in this work an analytical equation of state has been employed to calculate the pvt properties ofternary refrigerant mixtures. the theoretical eos is that of ihm, song and mason, which is based onstatistical-mechanical perturbation theory, and the two constants are enthalpy of vaporization δhvapand molar density ρnb, both at the normal boiling temperature. the following three temperaturedepende...

production of thermostable alkaline protease in tray bioreactor for solid state fermentation is a unique process which may lead to an economical approach for production of enzyme from agricultural waste or low cost substrate. in solid state fermentation using tray bioreactor, several agricultural residues such as rice bran, sugarcane bagasse, wheat bran, barely bran, corn meal and corn husk wer...

the paper determined optimum farm plan for food security among smallholder farmers in imo state, nigeria. data were collected with structured and validated questionnaire from 180 smallholder crops farmers in imo state. data were analyzed using descriptive statistics (mean, frequency distribution and percentages), budgetary analysis and linear programming model. results show that the mean age of...