The tetra-L-arginino-tetrahexyloxycalix[4]arene 1 has shown extraordinary abilities to compact and internalize different types of Nucleid Acid cargos (DNA, microRNA, PNA) into cells even known be transfected with great difficulties by commercial non-viral gene delivery systems. This activity, accompanied negligible toxicity, makes this calixarene a rather promising prototype vector for Gene The...

Ammonium sulfate is one of the subsidiary components in the stealth liposome structure. The ratio of ammonium ion bound to liposome sphere to ammonium ions outside the liposome plays an important role in drug delivery formulation; accordingly, in order to quantify the ammonium ion in the liposome structure, a rapid and sensitive method was validated using a conductivity detector. Through this m...

background: surface water and groundwater pollution with various forms of nitrogen such as ammonium and nitrate ions is one of the main environmental risks. the major objectives of this study were to evaluate the capacity of natural zeolite (clinoptilolite) to remove no3- and nh4+ from polluted water under both batch and column conditions. methods: the laboratory batch and column experiments we...

Calcium alginate (CaALG) hydrogel beads and two sets of composite beads, formed from a combination calcium alginate/propylene glycol alginate/human serum albumin (CaALG/PGA/HSA) with the quaternary ammonium salt, (3-(trimethoxysilyl)propyl)-octadecyldimethylammonium chloride (QA), (CaALG/QA), were prepared. Bovine (BSA) was condensed glutaraldehyde (GLA) to form BSA/GLA hydrogel. The correspond...

We report a novel transparent copper-based grid electrode fabricated by microcontact printing that offers high stability toward oxidation in air. Passivation is achieved using 2.5 nm thick layer of nickel buried just below the surface copper film from which etched. This approach to passivation retains advantages associated with lithography for fabrication very fast resist deposition and compati...

background zinc oxide nanoparticles (zno nps) are known as one of the important inorganic materials used in research and health-related applications with effective antibacterial activities. although the toxic effects of zno nps have already been evaluated, more information is required to understand the possible mechanisms. objectives the aim of the present study was to determine the influences ...

Appropriate remediation targets or universal guidelines for polar regions do not currently exist, and a comprehensive understanding of the effects of diesel fuel on the natural microbial populations in polar and subpolar soils is lacking. Our aim was to investigate the response of the bacterial community to diesel fuel and to evaluate if these responses have the potential to be used as indicato...

Short-term chronic and acute aquatic bioassays are valuable tools in screening a variety of environmental samples. However, only a limited number of studies have used these methods for testing the toxicity of atmospheric particulate matter samples. Previous studies have shown that compounds known to have adverse biological effects, such as polycyclic aromatic hydrocarbons, are deposited in sign...

The use of smoke pyrotechnic compositions bring during use an intoxication risk to the staff located in the immediate proximity. One of the methods for pyrotechnic composition toxicity evaluation consists in the dimensional analysis of the solid particles resulted from the combustion and the determination of the respiratory system intrusion rate. The experimental determinations were performed f...