Air pollution predictions for environmental impact assessments are usually generated by Gaussian plume/puff models driven by observationally-based meteorological inputs. An alternative approach is to use prognostic meteorological and air pollution models, which are better founded than the Gaussian approach, but tend to require much expertise and time to set up and large computing resources to r...

The pentacyclic tritcrpene 17/3(H),2 1 P(H)-hop-22(29)-ene (diploptenc) occurs in sediments throughout the Columbia River drainage basin and off the southern coast of Washington state in concentrations comparable to long-chain plantwax n-alkanes. The same relationship is evident for diploptene and long-chain n-alkanes in soils from the Willamette Valley. Microorganisms indigenous to soils and s...

There have been many studies concerning dispersion of gaseous pollutants from vehicles within street canyons; fewer address the dispersion of particulate matter, particularly particle number concentrations separated into the nucleation (10-30 nm or N10-30) or accumulation (30-300 nm or N30-300) modes either separately or together (N10-300). This study aimed to determine the effect of wind direc...

The understanding of the sedimentary dynamics is important in characterization impacts caused by dredging and this knowledge becomes decisive for their discernment. aim article was to analyze plume dispersion sediments Port Maceió. analyzes were carried out three sampling campaigns, before, during after port works, which collection points discard areas plotted. suspended particulate material (S...

Objective: To formulate unmodified crystalline meloxicam solid dispersions by the use of surfactants and polymer. This polymeric particulate system is named as meloxicam-loaded surface attached dispersion (MSDs). Methodology: experimental study was conducted at Lab Physical Industrial Pharmacy, Hanyang University, South Korea. The duration this around seven months. first phase (optimization fab...

in this study, a temperature-dependent of the dispersion coefficients is calculated from equation state.the lennard-jones lj (12-6-3) effective pair potential function and simple thermodynamic argumentwith the input pvt data of liquid metals are used to calculate the dispersion coefficients. the dispersioncoefficients ( , , ) 3 6 12 c c c are found to be a linear function of 1/t1+α , where t is...

Background: Reducing the effects of climate change and air pollution is a global priority at present. To formulate effective policies for achieving such a reduction requires a good understanding of the underlying phenomena. This study assessed the role of Nasr Kashan Factory in the emissions of particulate matter (PM). Methods: In this cross-sectional study, PM concentrations at 9 stations ins...

Objective(s): Multifunctional nanomedicine is the new generation of medicine, which is remarkably promising and associated with the minimum toxicity of targeted therapy. Distribution and transport of nanoparticles (NPs) in the blood flow are essential to the evaluation of delivery efficacy. Materials and Methods: In the present study, we initially designed a phantom based on Murray’s mini...

bioaerosols are the most significant risk for exposed people leads to infectious diseases. this study was aimed at evaluation of physical and microscopic characteristics and submicron particulate filtration efficiency of surgical masks used in hospitals throughout iran. five types of domestic (zist filter, elhamteb and arman masks) and imported (blosom, face masks) surgical masks were tested se...

ramadan fasting is one of the most important religious duties of muslims, that its effect on the heart has not been determined yet. our objective was to evaluate the effect of ramadan fasting on ventricular repolarization as assessed by qt interval, corrected qt interval, qt dispersion or corrected qt dispersion. sixthy healthy subjects aged 20 to 35 years were dispersion included in this study...