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Mohammad Ramezanzadeh,Bahram Ramezanzadeh,Morteza Ganjaee Sari,Mohammad Reza Saeb 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.82 No.-
Epoxy coating was reinforced with polyamidoamine dendrimer-reduced graphene oxide nanosheets(GO-PAMAM) to obtain a high-performance anti-corrosion system. The GO-PAMAM was characterized byX-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and UV–vis analysis. Results confirmedthat PAMAM molecules successfully grafted on the GO surface, resulting in the lamellae d-spacingincrement. Results of electrochemical impedance spectroscopy (EIS) and salt spray test evidenced that inthe presence of 0.2 wt.% GO-PAMAM the epoxy coating corrosion protection properties were effectivelyenhanced. It was found from the results that the PAMAM could enhance the GO particle dispersion in theepoxy through increasing the GO nanosheets interlayer space and surface hydrophilic nature reduction.
Niyaz Mohammad Mahmoodi,Mahdieh Sadat Mirmohammad Ali Roudaki,Khadijeh Didehban,Mohammad Reza Saeb 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.9
The worth of this work lies in giving the surface of starch a positive charge for removal of azo dyes. A novel ethylenediamine/glutaraldehyde-modified starch (SEG) bioadsorbent was developed here, characterized by Fourier infrared spectroscopy and scanning electron microscopy analyses, and then applied in removal of Direct Red 23 (DR23) and Acid Blue 92 (AB92) anionic dyes from aqueous solutions. The efficacy of the SEG as bio-based adsorbent was studied in terms of adsorption characteristics, including dye removal percent, adsorption capacity, adsorption kinetic and adsorption isotherm, taking the initial dye concentration, adsorption time and SEG dosage as changing variables. Overall, it was found that the SEG is an efficient bio-based adsorbent in removal of anionic dyes. Experimental analyses (Temperature=25 oC & pH=2) revealed that either a pseudo-second-order kinetic or Langmuir isotherm model can properly express the behavior of adsorption based on chemisorption phenomenon. For structural change characterization, FT-IR analysis was performed. The highest adsorption efficiency belonged to the solution in which 0.035 g SEG was added to 30mg/L water.
Carbon-based nanomaterials for CRISPR/Cas delivery: a perspective on the design approach
사파카니모인,Saeb Mohammad Reza,이정환,허윤석,Rabiee Navid 한국탄소학회 2024 Carbon Letters Vol.34 No.1
This perspective article delves into the evolving landscape of non-viral vectors for efficient CRISPR delivery, addressing the challenges associated with viral vectors and highlighting the potential of carbon-based nanomaterials as promising alternatives. The article underscores the importance of design strategies in enhancing the interactions between CRISPR components and carbon-based nanomaterials. Various design approaches are explored, including the incorporation of modified nanoparticles between carbonic layers and the creation of unique morphologies to facilitate optimal CRISPR interactions. Specific case studies are presented to exemplify the effectiveness of carbon-based nanomaterials in CRISPR delivery. This perspective sheds light on the dynamic field of non-viral CRISPR delivery vectors, emphasizing the significance of design strategies and showcasing the promising outcomes achieved through the utilization of carbon-based nanomaterials. The provided insights contribute to the ongoing efforts to develop efficient and safe methods for gene delivery and therapy.
The Use of Sumac as a Natural Mordant in Green Production of Iranian Carpet
Mozhgan Hosseinnezhad,Kamaladin Gharanjig,Samaneh Belbasi,Seyed Hadi Seied Saadati,Mohammad Reza Saeb 한국섬유공학회 2018 Fibers and polymers Vol.19 No.9
Dyeing is a state-of-the-art realm of textile engineering, however, the emphasis on petroleum-based products is now shifting towards green fibers, particularly, green manufacturing processes. In the present work, a natural mordant, sumac, was extracted and used alone and in combination with alum (a mineral mordant) in silk fibers dyeing with madder and Reseda green dye to make the green production of Iranian carpet possible. The FT-IR ATR spectra of the washed, mordanted, and mordanted dyed silk fibers revealed bonding between silk fibers and green materials. The color of the silk fibers dyed with madder and Reseda extraction was quantified in terms of CIELab (L*, a*, and b*) and K/S values. The effects of different treatments on fastness properties including light, wash, and rubbing fastness were assessed by ISO standard test method.
Aghazadeh Hadiseh,Yazdi Mohsen Khodadadi,Kolahi Alireza,Yekani Milad,Zarrintaj Payam,Ramsey Joshua D.,Ganjali Mohammad Reza,Stadler Florian J.,Saeb Mohammad Reza,Mozafari Masoud 한국물리학회 2021 Current Applied Physics Vol.27 No.-
Originating from a combination of neuroscience and biomedical engineering strategies, neuroprosthetics are developed as substitutes for sensory or cognitive modality damages caused by an injury or a disease. Dry electrodes are essential devices for monitoring of the biopotential such as electroencephalography (EEG) and electrocardiography (ECG). In this paper, polyaniline (PANI) coated stainless steel (SS) electrodes have been fabricated using in-situ electrochemical polymerization on the SS surface. The SEM images showed the formation of a nanoporous PANI-coating on the SS electrodes. EIS measurements on a skin model demonstrated a significantly lower contact impedance for the PANI-coated electrodes compared to bare SS electrodes. Furthermore, increasing the thickness of the nanoporous coating resulted in a higher contact impedance reduction. The comparison of the EEG measurements for the manufactured electrodes with conventional wet Ag/AgCl electrodes showed that the electrodes could successfully monitor alpha rhythms and muscle artifacts, as well. The prepared electrode can be used in various applications such as biopotential monitoring.