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Saleem M.,Naz M.Y.,Shukrullah S.,Farooq M.U.,Zahid M.,Hussain Z.,Makhlouf M.M. 한국물리학회 2021 Current Applied Physics Vol.31 No.-
A single step ultrasonic biosynthesis method was used to synthesize and coat TiO2 nanoparticles onto DBD plasma functionalized raw cotton. Titanium isopropoxide was reduced with aloe vera plant extract into TiO2 nanoparticles. The effect of DBD plasma treatment on self-cleaning property of TiO2 coated fabric was optimized statistically by using a complete composite design. To induce functional groups on the cotton fabric surface, the fabric was pre-treated with DBD plasma over various periods of time. The plasma exposure time, molarity of solution and ultrasonication time were optimized using complete composite design package. TiO2 nanoparticles revealed spherical shape and anatase phase with average crystallite size of 10.46 nm. The statistically optimized plasma exposure time, molarity and sonication time was 7 min, 0.80 and 75 min, respectively. The plasma activation of fabric significantly improved the adsorption, tensile strength and self-cleaning ability of TiO2 coated fabric.
Saleem M.,Naz M.Y.,Shukrullah S.,Shujah M. A.,Akhtar M.,Ullah Sami,Ali S. 한국탄소학회 2022 Carbon Letters Vol.32 No.1
The carbon-based nanostructures are in limelight due to their widespread applications in nano-to-micro-scale technologies. The carbon dots are known for their unique physical, electrical, optical, chemical and biological properties. The carbon dots (CDs) are being produced through several well-developed synthesis methods, one of which is the green sonochemical. This method is preferred over others because it is a green source of energy, facile, fast, low-temperature process, non-toxic and less expensive. Despite the fact of using 90% less energy than other methods, this method has been overlooked in the published literature. It is possible to prepare pure and doped CDs of low toxicity and controlled physicochemical properties through sonochemical method. In recent years, sonochemically produced CDs have been tuned and characterized for a variety of applications. This review has explored the merits and demerits of sonochemical method in comparison to the other methods for the synthesis of pure CDs and their nanocomposites. The role of multiple factors in tailoring the specific parameters of CDs for their application in antibacterial, polymerization, tissue engineering, catalysis, bio-imagining, supercapacitors, drug delivery and electric devices is also elaborated in this review. This review also concludes on future directions in the applications of sonochemically produced CDs.
Muddassar, M,Pasha, F A,Neaz, M M,Saleem, Y,Cho, S J Springer 2009 Journal of molecular modeling Vol.15 No.2
<P>Protein kinase B (PKB; also known as Akt kinase) is located downstream in the PI-3 kinase pathway. Overexpression and constitutive activation of PKB/Akt leads to human prostate, breast and ovarian carcinomas. A series of 69 PKB/Akt inhibitors were examined to explore their binding modes using FlexX, and three-dimensional quantitative structure-activity relationship (3D-QSAR) studies based on comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) were performed to provide structural insights into these compounds. CoMFA produced statistically significant results, with cross-validated q ( 2 ) and non-cross validated correlation r(2) coefficients of 0.53 and 0.95, respectively. For CoMSIA, steric, hydrophobic and hydrogen bond acceptor fields jointly yielded 'leave one out' q(2) = 0.51 and r(2) = 0.84. The predictive power of CoMFA and CoMSIA was determined using a test set of 13 molecules, which gave correlation coefficients, r(2)(predictive) of 0.58 and 0.62, respectively. Molecular docking revealed that the binding modes of these molecules in the ATP binding sites of the Akt kinase domain were very similar to those of the co-crystallized ligand. The information obtained from 3D contour maps will allow the design of more potent and selective Akt kinase inhibitors.</P>
DNA Marker Facilitated Analysis and Selection of Low Tiller Number in Rice
Sang Nag Ahn,Soo Jin Kwon,Dong Beom Yoon,M. Y. Saleem,Jung Pil Suh 한국육종학회 2003 한국육종학회지 Vol.35 No.4
Molecular markers were used to map and characterize quantitative trait loci (QTLs) for panicle number per plant and other traits of agronomic importance in an inter-subspecific cross population of rice. The parents of the cross were a Tongil-type cultivar
Pervez, S.,Kim, D.,Doh, C.H.,Farooq, U.,Yaqub, A.,Choi, J.H.,Lee, Y.J.,Saleem, M. North-Holland 2014 Materials letters Vol.137 No.-
Highly scalable and fast grown TiO<SUB>2</SUB> nanotube layers (TNTs) were utilized as a binder and conductive agent free anode for Li-ion battery (LIB) to obtain high areal capacity. To synthesize the TNTs, a simple electrochemical anodization was carried out in an electrolyte containing lactic acid as an additive. Lactic acid assisted in obtaining nanotube layers of greater length in a very short time with a strong adherence to the Ti substrate. Results showed that the variation in the aspect ratio of the TNTs has a significant impact on the electrochemical performance of the anode material in terms of areal charge/discharge capacity, i.e., longer the length and wider the diameter of the nanotube, higher the capacity and vice versa. For TNTs with a length of up to 38μm, a high areal capacity of ca. 1000μAhcm<SUP>-2</SUP> was achieved after 100 charge/discharge cycles.
Farooq, U.,Choi, J.H.,Atif Pervez, S.,Yaqub, A.,Kim, D.H.,Lee, Y.J.,Saleem, M.,Doh, C.H. North-Holland 2014 Materials letters Vol.136 No.-
A comparative study was conducted to examine the effect of two different polymer binders and composition ratio of active material on electrochemical performance of silicon-graphite (Si-Gr) composite electrode in rechargeable lithium-ion batteries (LIBs). Polyacrylic acid (PAA) and polyvinylidene fluoride (PVDF) were utilized as binders for composite electrode that was fabricated using Si powder, graphite and super P black (SPB) by varying composition ratios of active material. The electrochemical performance was investigated by galvanostatic charge/discharge tests at room temperature. The results revealed that composite electrode fabricated with PAA binder using maximum contents of Si powder (20wt%) showed high specific capacity around 1000mAhg<SUP>-1</SUP> with excellent capacity retention. The enhanced electrochemical performance can be attributed to high mechanical strength and adhesive capability provided by PAA binder to composite electrode.