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SOLUTION OF AN UNSOLVED PROBLEM IN BCK-ALGEBRA
Nisar, Farhat,Bhatti, Shaban Ali The Youngnam Mathematical Society Korea 2005 East Asian mathematical journal Vol.21 No.1
In this paper we introduced Semi-neutral BCK-algebra and investigate some of its properties. The notions of ideals and subalgebras coincide in Semi-neutral BCK-algebras. We also show that if the number of nonzero elements in a Semi-neutral BCK-algebra is n, then the number of ideals/subalgebras in it is $2^n$. Further, we solved an open problem posed by W.A. Dudek in [2].
Nisar, Umair,Amin, Ruhul,Essehli, Rachid,Shakoor, R.A.,Kahraman, Ramazan,Kim, Do Kyung,Khaleel, Mohammad A.,Belharouak, Ilias Elsevier 2018 Journal of Power Sources Vol.396 No.-
<P><B>Abstract</B></P> <P>LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB> is a promising high-voltage cathode for lithium-ion battery fast charging applications. Aware of its electrochemical stability issues, the material's surface is modified with small amounts of zirconia (ZrO<SUB>2</SUB>) ranging from 0.5 to 2 wt% using a scalable ball milling process. The advantage of the coating has been demonstrated in electrochemical measurements performed at room temperature and 55 °C, and in cells discharged under high-rate conditions up to 80C. Of significance, the material coated with 1.0 wt% ZrO<SUB>2</SUB> has been cycled at the 40C rate for over a thousand cycles and retains 86% of its initial capacity. The material with 2.0 wt% ZrO<SUB>2</SUB> modification preserves 76% of its initial capacity when cycled at the 40C rate and 55 °C. The coated materials have shown excellent cycling stability when subjected to 6C (10-min) fast charging and C/3 discharging for 300 cycles. Compared to the uncoated material, the interfacial resistance of the zirconia modified LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB> has been found to be much lower and does not significantly increase with increasing the coating amount. However, the electrochemical performances are still partly limited by both interfacial resistance at the beginning of charge and electrolyte diffusivity, particularly under higher rate cycling conditions. Overall, the strategy of ZrO<SUB>2</SUB> surface modification applied to LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB> unveils the potential that the material could play in extreme fast charged electric vehicles.</P> <P><B>Highlights</B></P> <P> <UL> <LI> ZrO<SUB>2</SUB>-LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB> withstands 80C-rate and demonstrates over thousand cycles at 40C. </LI> <LI> Charge transfer resistance at LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB>/electrolyte is stable with coating. </LI> <LI> Origin of high-rate capability is correlated with the high kinetics at the material's interfaces. </LI> <LI> Surface modification of LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB> enables extreme fast charging. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
COMPUTATIONAL METHOD TO CHARACTERIZE $S_3$-ALGEBRAS
Nisar, Farhat,Bhatti, Shaban Ali The Youngnam Mathematical Society Korea 2007 East Asian mathematical journal Vol.23 No.1
In this paper we give a concrete computational method to characterize $S_3$-algebras.
Nisar, Kottakkaran Sooppy,Rahman, Gauhar,Choi, Junesang,Mubeen, Shahid,Arshad, Muhammad The Youngnam Mathematical Society 2018 East Asian mathematical journal Vol.34 No.3
We aim to establish certain Gronwall type inequalities associated with Riemann-Liouville k- and Hadamard k-fractional derivatives. The results presented here are sure to be new and potentially useful, in particular, in analyzing dependence solutions of certain k-fractional differential equations of arbitrary real order with initial conditions. Some interesting special cases of our main results are also considered.
CHARACTERIZATION OF f-DERIVATIONS OF A BCI-ALGEBRA
Nisar, Farhat The Youngnam Mathematical Society 2009 East Asian mathematical journal Vol.25 No.1
In this paper we characterize f-derivations of a BCI-algebra as well as its center.
Nisar Asia,Khan Muzamil Ahmad,Hussain Zakir 한국세라믹학회 2022 한국세라믹학회지 Vol.59 No.3
In this research study, a highly selective and sensitive electrochemical sensor was designed by coating the glassy carbon electrode (GCE) with the novel PANI/MOF-199/Ag nanocomposite for the non-enzymatic electrochemical detection of dopamine (DA). PANI/MOF-199/Ag nanocomposite was prepared by the in situ chemical oxidative polymerization of aniline monomer in the presence of MOF-199 followed by the deposition of Ag nanoparticles using an in situ chemical reduction route. Characterization techniques such as Scanning electron microscopy (SEM), X-ray powder diffraction (XRD), Fourier transform infra-red spectroscopy (FTIR), and Raman analysis were used to find out the successful synthesis of the prepared samples. Meanwhile, the electrochemical performance was investigated by chronoamperometry (CA) and cyclic voltammetry (CV) not only at different molar concentrations of DA but also with various compositions of Ag nanoparticles loaded. The PANI/MOF-199/Ag-3% modified electrode exhibited good electro-catalytic activity with high sensitivity of 1.421 μA μM−1 cm− 2 and a low detection limit (LOD) of 0.22 μM (S/N = 3) towards DA. Moreover, in the presence of common interfering biological compounds such as glucose (Glu), uric acid (UA), and ascorbic acid (AA), the fabricated electrochemical sensor was found selective to DA detection.
Stabilizing the defect-induced dilute magnetic semiconductors: Li-doping in GaN with Ga vacancies
Nisar, J.,Peng, X.,Kang, T. W.,Ahuja, R. Editions de Physique 2011 Europhysics letters Vol.93 No.5
<P>By means of first-principles calculations, we have investigated the effects of various Li-doping on the exchange interaction and the formation energy in bulk GaN with Ga vacancies. Although the Ga vacancies can induce ferromagnetism in GaN, their formation energy is rather high. Our calculations show that Li-doping can effectively tune the formation energy of Ga vacancies. It is revealed that the stabilizing effect depends on whether the number of holes is increased or decreased after Li-doping. When Li atoms substitutes for N atoms or occupies the interstitial sites, the holes are reduced and the formation energy of Ga vacancies is lowered. In contrast, Li substituting for Ga generates additional holes in the system, leading to an enhancement of the formation energy of Ga vacancies and making the system less stable.</P>
Nisar Ahmad,Samina Kar,Dilshad Hussain,목영선,가야스 우딘 시디퀴 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.11
A versatile graphene oxide nanosheets-ZnO nanospheres nanocomposite was synthesized for removal of dyes via adsorption process and characterized by various techniques, such as X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and zeta potential (ZP) analyzer. The synthesized nanocomposite (NCs) was utilized as an efficient adsorbent for the removal of anionic dye eosin y (EY) as well as cationic dye methylene blue (MB) from aqueous solutions. The kinetics of adsorption was studied by pseudo-first and pseudosecond- order kinetics and the adsorption data was well in agreement with the pseudo-second-order model. The R2 values of 0.9971 and 0.9839 of the second order for EY and MB, respectively, were greater than that of the first order. To calculate the most suitable isotherm model for adsorption, the Freundlich and Langmuir isotherms were applied and the data for both dyes fitted well with the Langmuir model. The maximum adsorption capacities obtained from Langmuir isotherm for EY and MB were 555.55 and 250mg/g, respectively. Remarkably, 3.0mg/13mL of nanocomposite adsorbed 0.1mg/mL of EY and 0.04mg/mL of MB in the very short time of 10 and 15minutes, respectively. The high adsorption efficiency of GO/ZnO NCs suggests that they may be a useful adsorbent for the purification of industrial wastewater.
ON A CERTAIN EXTENSION OF THE RIEMANN-LIOUVILLE FRACTIONAL DERIVATIVE OPERATOR
Nisar, Kottakkaran Sooppy,Rahman, Gauhar,Tomovski, Zivorad Korean Mathematical Society 2019 대한수학회논문집 Vol.34 No.2
The main aim of this present paper is to present a new extension of the fractional derivative operator by using the extension of beta function recently defined by Shadab et al. [19]. Moreover, we establish some results related to the newly defined modified fractional derivative operator such as Mellin transform and relations to extended hypergeometric and Appell's function via generating functions.