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A Novel Coupling between the Electron Structure and Properties of Perovskite Transition Metal Oxides

Applied Mathematics 2013年第9期4卷 1320-1325页

作者： ghous narejo Warren F. Perger Electrical Engineering Department Michigan Tech University Houghton USA

The ab-initio computational techniques are employed to extract the coupling between the electronic structure and magnetic properties for a wide variety of transition metal oxides. Optimized crystalline structures are computed by employing Hartree Fock (HF) and Density Functional Theory (DFT) techniques. The hydrostatic pressure is employed upon the optimized cubic crystalline structures of BaScO3, BaTiO3, BaVO3, BaCrO3, BaMnO3 and BaFeO3 to extract the coupling between the electronic structures and magnetic properties originating due to electron spin polarizations.

关键词： Coupling Spin Strain

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Multi-Attribute Group Decision-Making Method under Spherical Fuzzy Bipolar Soft Expert Framework with Its Application

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Computer Modeling in Engineering & Sciences 2023年第11期137卷 1891-1936页

作者： Mohammed M.Ali Al-Shamiri ghous Ali Muhammad Zain Ul Abidin Arooj Adeel Department of Mathematics Faculty of Science and ArtsMahayl AssirKing Khalid UniversityAbhaSaudi Arabia Department of Mathematics and Computer Faculty of ScienceIbb UniversityIbbYemen Department of Mathematics Division of Science and TechnologyUniversity of EducationLahorePakistan

Spherical fuzzy soft expert set(SFSES)theory blends the perks of spherical fuzzy sets and group decision-making into a unified *** allows solutions to highly complicated uncertainties and ambiguities under the unbiased supervision and group decision-making of multiple ***,SFSES theory has some deficiencies such as the inability to interpret and portray the bipolarity of *** work highlights and overcomes these limitations by introducing the novel spherical fuzzy bipolar soft expert sets(SFBSESs)as a powerful hybridization of spherical fuzzy set theory with bipolar soft expert sets(BSESs).Followed by the development of certain set-theoretic operations and properties of the proposed model,important problems,including the selection of non-powered dam(NPD)sites for hydropower conversion are discussed and solved under the proposed *** problems mainly focus on the need for an efficient tool capable of considering the bipolarity of parameters,complicated ambiguities,and multiple *** the new approach by a detailed comparative analysis,it is concluded that the proposed model is more comprehensive and reliable for multi-attribute group decisionmaking(MAGDM)than the previous tools,particularly considering the bipolarity of parameters under SFSES environment.

关键词： Spherical fuzzy sets bipolar soft expert sets group decision-making algorithm non-powered dams

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Crystal Structure Analysis of 1-Hydroxy-3,5-dimethoxy-9H-xanthen-9-one Isolated from Ajuga bracteosa Root Extract and Its Biological Studies

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Chinese Journal of Structural Chemistry 2019年第9期38卷 1519-1529页

作者： AKHTER Kulsoom AHMED Muhammed Naeem ghous Tahseen RASHEED Basharat TAHIR Muhammad Nawaz ARSHAD Ifzan Department of Chemistry The University of Azad Jammu and KashmirMuzaffarabad13100Pakistan Department of Chemistry Mirpur University of Science and Technology(MUST)Mirpur-10250Azad Jammu and KashmirPakistan Department of Physics University of SargodhaSargodhaPakistan Department of Chemistry Quaid-i-Azam UniversityIslamabadPakistan

The structure of 1-hydroxy-3,5-dimethoxy-9 H-xanthen-9-one isolated from chloroform extract of Ajuga bracteosa root was analyzed by single-crystal X-ray diffraction. DPPH(1,1-diphenyl-2-picryl hydrazyl), ABTS(2,2?-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activities(RSA) and Fe2+ chelating activities were carried out to determine the antioxidant potential of the compound. RSA values for the compound were 96%, 96% and 96% for all the three activities respectively at maximum concentration of the compound(100 μ gmL-1) with the IC50 values of 3.40, 4.86 and 0.10(μ gmL-1). Antidiabetic activities including antiglycation and α-glucosidase inhibition were also performed where the antiglycation activity was performed using two techniques including spectrofluorometric as well as spectrophotometric technique. Spectrofluorometric technique provided 97% antiglycation potential while 92% antiglycation potential was observed by spectrophotometric technique for the isolated compound. The compound at a concentration of 10 μ gmL-1 exhibited 31% α-glucosidase inhibitory potential with IC50 of 15.56 μ gmL-1. Antimicrobial activity data showed that the compound was active against all the studied pathogenic bacteria.

关键词： crystal structure radical scavenging activity antidiabetic activity C–H···π interactions

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Stability and l1-gain Analysis for Positive 2D fuzzy Systems in Roesser Model

Stability and l1-gain Analysis for Positive 2D fuzzy Systems...

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第30届中国控制与决策会议

作者： Zhaoxia Duan Jian Shen Imran ghous College of Energy and Electrical Engineering Hohai University The 28th Research Institute of China Electronics Technology Group Corporation Department of Electrical Engineering COMSATS Institute of Information Technology

This paper considers the stability and l1-gain analysis for positive two-dimensional（2D） linear systems with state delays described by the Roesser model based on Takagi-Sugeno（T-S） fuzzy logic rules. The co-positive type Lyapunov function method is applied to establish sufficient conditions of asymptotical stability for the addressed system.l1-gain index is used to analyze the noise attenuation performance of the positive 2D T-S fuzzy delayed systems. The obtained results are formulated in the form of linear matrix inequalities（LMIs）. Finally, an illustrative example is given to verify the effectiveness of the proposed method.

关键词： Positive 2D systems fuzzy systems stability l1-gain co-positive type Lyapunov function

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