Polycaprolactone/cress seed mucilage based bilayer antibacterial films containing ZnO nanoparticles with superabsorbent property for the treatment of exuding wounds.

In this research, a novel double-layer film based on polycaprolactone and cress seed mucilage containing zinc oxide nanoparticles (0.5-2 %) was synthesized using solution casting technique, as an interactive multi-functional wound dressing. The bilayer films were characterized by measuring moisture content, contact angle parameter, porosity, water vapor transmission rate (WVTR), color attributes and opacity, swelling, degradation, mechanical properties, cell viability, and antimicrobial activity, as well as using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD).

Effect of Nanofillers on Properties and Pervaporation Performance of Nanocomposite Membranes: A Review.

In recent years, a well-known membrane-based process called pervaporation (PV), has attracted remarkable attention due to its advantages for selective separation of a wide variety of liquid mixtures. However, some restrictions of polymeric membranes have led to research studies on developing membranes for efficient separation in the PV process. Recent studies have focused on preparation of nanocomposite membranes as an effective method to improve both selectivity and permeability of polymeric membranes.

Toxoplasmosis and symptoms severity in patients with COVID-19 in referral centers in Northern Iran.

Toxoplasmosis has been categorized as one of the long-lasting protozoan parasitic infections. It affects almost one-third of the world's population. In recent years, several documented studies have elucidated that infected individuals have a remarkably higher incidence of distinct health problems and show various adverse effects.

Dermal microfilariae of dogs, jackals and cats in different regions of Iran.

Background: Due to the complexity of retrieving skin-dwelling microfilariae, filarioids of dogs presenting dermal microfilariae (e.g. Cercopithifilaria spp.

Effective Parameters on Fabrication and Modification of Braid Hollow Fiber Membranes: A Review.

Hollow fiber membranes (HFMs) possess desired properties such as high surface area, desirable filtration efficiency, high packing density relative to other configurations. Nevertheless, they are often possible to break or damage during the high-pressure cleaning and aeration process. Recently, using the braid reinforcing as support is recommended to improve the mechanical strength of HFMs.

Gold nanoparticles show potential in vitro antiviral and anticancer activity.

Aims: Gold nanoparticles (AuNPs) have been attracted interests in the various areas of clinical therapeutics. In this study, we investigated the anticancer and antiviral potential activity of AuNPs against influenza A virus and human glioblastoma (GMB) U-87 and U-251 cell lines.

Main Methods: Gold nanoparticles (AuNPs) were synthesized by citrate reduction method.

The combined impact of calcium lactate with cysteine pretreatment and perforation-mediated modified atmosphere packaging on quality preservation of fresh-cut 'Romaine' lettuce.

The effect of perforation-mediated modified atmosphere packaging (PM-MAP) in combination with calcium lactate (1.5% CaL) and cysteine (0.1, 0.

Removal of Cu, Cd and Ni ions from aqueous solution using a novel chitosan/polyvinyl alcohol adsorptive membrane.

The chitosan/poly vinyl alcohol membrane was modified by addition of some amine group to the membrane structure utilizing polyethyleneimine (PEI) in order to increase ionic metals adsorbent properties of the membrane. The removal percentage of the modified membranes was compared with the pristine membrane and activated carbon as common adsorbents. The membranes were characterized by FTIR, SEM, swelling degree and porosity measurement.

Modified magnetic nanoparticles by PEG-400-immobilized Ag nanoparticles (FeO@PEG-Ag) as a core/shell nanocomposite and evaluation of its antimicrobial activity.

Background: Noble metal nanoparticles, due to their good physicochemical properties, have been exploited in biological applications. Among these metals, nanosilver has attracted great attention because of its optical properties and broad-spectrum antimicrobial activities with no drug tolerance.

Purpose: The present study has attempted to conduct chemical synthesis of FeO@PEG-Ag core/shell nanocomposites in aqueous solutions through co-precipitation of Fe and Fe ions, encapsulating the iron oxide core by poly (ethylene-glycol) (PEG) improve its hydrophilicity and biocompatibility, and immobilizing silver ions by application of NaBH as a reducing agent.

Biodegradable blend membranes of poly (butylene succinate)/cellulose acetate/dextran: Preparation, characterization and performance.

The aim of this study is to prepare biodegradable blend membranes of poly (butylene succinate) (PBS)/cellulose acetate (CA)/dextran (DEX). The effect of DEX concentration as an additive on morphology, porosity, hydrophilicity, mechanical strength, biodegradability, antifouling properties, and performance of dairy wastewater treatment of the membranes was investigated. Results demonstrated that larger pores were formed in the membrane structure and the porosity of the membranes was remarkably increased by adding DEX concentration.

Preparation of hydrophilic nanofiltration membranes for removal of pharmaceuticals from water.

Asymmetric polyethersulfone (PES) nanofiltration membranes were prepared via phase inversion technique. PES polymer, Brij 58 as surfactant additive, polyvinylpyrrolidone (PVP) as pore former and 1-methyl-2-pyrrolidone (NMP) as solvent were used in preparation of the casting solutions. Distillated water was used as the gelation media.

Optimal Modeling of Urban Ambient Air Ozone Concentration Based on Its Precursors' Concentrations and Temperature, Employing Genetic Programming and Genetic Algorithm.

Efficient models are required to predict the optimum values of ozone concentration in different levels of its precursors' concentrations and temperatures. A novel model based on the application of a genetic programming (GP) optimization is presented in this article. Ozone precursors' concentrations and run time average temperature have been chosen as model's parameters.

Preparation and characterization of poly (ethersulfone) nanofiltration membranes for amoxicillin removal from contaminated water.

Nowadays, antibiotics such as amoxicillin have been entered in water bodies. Nanofiltration has been proposed as an attractive technology for removal of antibiotics from aquatic environment instead of conventional wastewater treatment. In this paper, novel asymmetric flat sheet nanofiltration membranes were prepared via immersion precipitation technique and by using the poly(ethersulfone)/Brij®S100/Poly(vinylpirrolidone)/1-methyl-2-pyrolidone casting solutions.

Influence of transmembrane pressure and feed concentration on the retention of arsenic, chromium and cadmium from water by nanofiltration.

One of the main toxic pollutants in drinking water is heavy metals which must be reduced to standard levels. Removal of trace amounts of heavy metals can be achieved by means of membrane processes such as nanofiltration. The removal efficiency of a nanofiltration membrane is strongly affected by operating conditions.