efforts to increase the mass transfer coefficient, enhance the contact area, and decrease the power input of contractors have given risen to the development of the pre-dispersed solvent extraction (pdse) contactor and the devise of the new dissolved nitrogen pdse (dnpdse) contactors. the studies conducted after the design of the new contactor to determine the working conditions for its suitable...

conclusions the number of studies conducted on pre-hospital emergency services in iran is limited. to promote public health, consideration of prevention areas, processes to provide pre-hospital emergency services, policymaking, foresight, systemic view, comprehensive research programs and roadmaps, and assessments of research needs in pre-hospital emergency seem necessary. context pre-hospital ...

intraplatelet phospho-vasp analysis is a commonly used approach for monitoring of anti-platelet therapy; however, testing of intraplatelet phospho-vasp expression needs a high level of experience and proficiency. the ability to recognize how the pre-analytical variations can change the results would be helpful for the interpretation of data from intraplatelet p-vasp analysis. the aim of this st...

background: according to previous studies there are some different opinions on the pre-emptive effects of paracetamol in controlling post-operative pain, we aimed to compare the analgesic effects of pre-emptive paracetamol with post-operative paracetamol and morphine in patients undergoing septorhinoplasty. materials and methods: a hundred and six patients aged 15 to 50 were divided into 3 grou...

the main sources of human exposure to trace metals for non-occupationally exposed individualsare inhalation and ingestion. because the absorption rates of the metals by inhalation are significantly higher (up to 50-60%) than those by ingestion (between 3% and 10%), determination of trace metals in ambient air samples is of special interest. the main purpose of this study was to determine fe, zn...

a highly convenient, selective and sensitive procedure for pre-concentration, separation and determination of sub-ppm levels of cu 2+ in aqueous samples based on modification of octadecyl silica bonded phase membrane (osbpm) disks is described using benzildithiosemicarbazone  (bdsc) as a powerful modifier. it was revealed that each loaded osbpm disk with 6.0 mg of bdsc serves as excellent bead ...

objectives the aim of this study was to investigate the quality of pre-hospital circulatory management in patients with multiple trauma. patients and methods this was a cross-sectional study conducted in 2013. the study population consisted of all patients with multiple trauma who had been transferred by emergency medical services (ems) to the central trauma department in kashan shahid beheshti...

many of people have hospital anxiety, fear of surgery and are afraid to take medicine. nosocomephobia is the name of the phobia relating to the fear of hospitals. reducing the anxiety is a routine part of pre-operative nursing care. the aim of this study is to investigate the prevalence of anxiety in pre-surgical patients. this descriptive study was done in shahriar hospital. sample size was 11...

background: pre?eclampsia as a hypertensive disorder of pregnancy complicates up to 5–10% of pregnancies worldwide. endothelial dysfunction plays an important role in the pathogenesis of pre?eclampsia. in this study, we aim to evaluate the effect of high?dose folic acid on endothelial dysfunction in pre?eclamptic patients. materials and methods: in this triple?blinded randomized clinical trial,...