Mohamadzaman Kassaee
Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-4383 Tehran, I.R. IRAN
[ 1 ] - Removal of Arsenic from Water Using Aluminum Nanoparticles Synthesized through Arc Discharge Method
The present study describes a novel procedure for As (V) removal from water using pure Al nanoparticles (AlNps) prepared by arc discharge technique. Some spectroscopic and microscopic techniques such as X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Brunauer–Emmett–Teller (BET) and Barrett–Joyner–Halenda (BJH) corroborated the s...
[ 2 ] - A novel binary chlorhexidine-chitosan irrigant with high permeability, and long lasting synergic antibacterial effect.
Objective.Chlorhexidine gluconate (CHX) is an irrigant with a reasonable antibacterial ability and rather high permeability yet often fails to remove the smear layer. To solve this problem, CHX is upgraded through its complexion with chitosan (CS). Methods.Molar roots are split longitudinally by a rotary diamond saw. Chlorhexidine-chitosan (CHX-CS) is made by combinatio...
[ 3 ] - A New Nano-Chitosan Irrigant with Superior Smear Layer Removal and Penetration
Our primary objective was to measure root canal penetrations of aqueous antibacterial nano-chitosan (Nano-CS), for the first time. The second objective was to compare and contrast such penetrations to those of chitosan (CS) itself, as well as sodium hypochlorite (NaOCl), chlorhexidine (CHX) and ethylenediamintetraacetic acid (EDTA), at the routinely used concentrations. Molar roots were split l...
[ 4 ] - Antibacterial ethylene propylene rubber impregnated with silver nanopowder: AgNP@EPR
Following our interest in reaching for a molded rubber article with possible detergent contact applications, durable silver nanopowder (AgNP) is synthesized by arc discharge, then mixed with varying ratios of ethylene propylene rubber (EPR), affording novel AgNP@EPR nanocomposites. X-ray diffraction (XRD) patterns of AgNP as well as AgNP@EPR show no trace of impurity, while scanning electron mi...
[ 5 ] - N-Heterocyclic Plumbylenes (NHPbs) at Theoretical Levels
Plumbylenes are reactive intermediates whose discovery and characterizations are of great significance. Here, ten novel plumbylenes are introduced and characterised. A comparison is made between novel 1,4-di(R)tetrazol-5-plumbylenes (IR) with their corresponding 1,3-di(R) isomers (IIR), at DFT (R = H, Me, Et, i-Pro, and t-Bu). Every one of our plumbylenes (IR or IIR) appears less stable, with a...
[ 6 ] - The effect of foliar and soil application of chitosan nanoparticles on chlorophyll, photosynthesis, yield and yield components of wheat (Triticum aestivum L.) under drought stress after pollination
To evaluate the effect of chitosan NPs on wheat under late season drought stress, a factorial experiment was performed based on a randomized complete block design in three replications in pot conditions at Tarbiat Modares University in 2015. The experimental factors included the NPs concentrations (0, 30, 60 and 90 mg.L-1), application methods (foliar and soil application) and irrigation regime...
[ 7 ] - Novel N-heterocyclic Stannylenes (NHSns) Using DFT
Substitution effects are probed for novel N-heterocyclic stannylenes (NHSns), including 1,4-di(R)-tetrazole-5-stannylenes (1R), and 1,3-di(R)-tetrazole-5-stannylenes (2R), using B3LYP/6-311++G** level of theory. Nucleophilicity, multiplicity, and stability of 1R and 2R are calculated; with R = H, methyl, ethyl, i-propyl, t-butyl, Ph, OH, methoxy, NO2, CN and CF3. Asymmetric 2H appears more nucl...
[ 8 ] - Efficiency of Cu, Ag, and Fe Nanoparticles As Detergents Preservatives Against E. coli and S. aureus
In this study, Cu, Ag, and Fe nanoparticles (NPs) are used in shampoo, hand washing liquid (HWL) and dish washing liquid (DWL) instead of the conventional synthetic preservatives such as isothiazolinones; since the latter often act as potent sensitizers that leads to development of allergic contact dermatitis. The above NPs are considerably effective against Escherichia coli and Staphylococcus ...
نویسندگان همکار