PURPOSE Nanoprecipitation is the convenient and commonly used method for the preparation of polymeric nanoparticles around 170 nm but yield particles with broad distribution, which require filtration step to produce particles with narrow distribution. Hence, the primary aim of the present study was to implement few modifications to the conventional nanoprecipitation method to reduce the mean pa...

In this article, multiple-product PVRP with pickup and delivery that is used widely in goods distribution or other service companies, especially by railways, was introduced. A mathematical formulation was provided for this problem. Each product had a set of vehicles which could carry the product and pickup and delivery could simultaneously occur. To solve the problem, two meta-heuristic methods...

This paper describes an improved microfluidic device that enables hydrodynamic particle concentration and size-dependent separation to be carried out in a continuous manner. In our previous study, a method for hydrodynamic filtration and sorting of particles was proposed using a microchannel having multiple branch points and side channels, and it was applied for continuous concentration and sep...

Exosomes, which are expected to be delivery systems for biomolecules such as nucleic acids, are collected by several methods. However, the effect of exosome isolation methods on the characteristics of exosomes as drug carriers, such as recovery efficiency after sterile filtration and pharmacokinetics, has not been investigated despite the importance of these characteristics for the development ...

•The public is sometimes exposed to damaging small particle aerosols including SARS-Cov-2. •During shortages, facepieces available the do not protect against aerosols. •We report designing homemade masks from home air purifier “true HEPA” filters. •These function similar an N95. Shortages of efficient filtering facepiece respirators leave vulnerable transmission infectious diseases in This stud...

At this article will be created a software written in visual basic for efficiency and penetration calculation in a fibrous filter medium for given values of particles diameter that are retained in the filter. Initially, will become report of mathematical models of air filtration in fibrous filters media and then will develop the code and the graphical interface of application, that are the base...

we developed biofunctionalized nanoparticles with magnetic properties by immobalizing diethyle-neglycol (deg) on gd2o3, and pegilation of small particulate gadolinium oxide (spgo) with two me-thoxy-polyethyleneglycol-silane (mpeg-silane 550 and 2000 da) using a new supervised polyol route, described recently. in conjunction to the previous study to achieve a high quality synthesis and increase ...