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GENERALIZED INVEXITY-TYPE CONDITIONS IN CONSTRAINED OPTIMIZATION

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Journal of Systems Science & Complexity 2011年第2期24卷 394-400页

作者： Shashi K. mishra Norma G. RUEDA Department of Mathematics Faculty of Science Banaras Hindu University Varanasi 221005 India.Norma G. RUEDA Department of Mathematics Merrimack College North Andover MA 01845 USA.

This paper defines a new class of generalized type I functions, and obtains Kuhn-Tucker necessary and sumcient conditions and duality results for constrained optimization problems in the presence of the aforesaid weak... 详细信息

关键词： Constrained optimization duality results type I functions.

Advanced microemulsion synthesis and characterization of wollastonite （CaSiO3）fpolystyrene one-dimensional nanorods with core-shell structures

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Particuology 2017年第1期15卷 118-128页

作者： Aniruddha Chatterjee Prashant Khobragade, Satyendra mishra Jitendra Naik University Institute of Chemical Technology North Maharashtra University Jalgaon 425001 Maharashtra India

In this work, one-dimensional core-shell nanorods （CSNRs; 185-250nm wide and 1-1.5μm long） consisting of triethoxyvinylsilane-modified wollastonite （CaSiO3） nanorods （MWNRs） as a core and polystyrene as a shell with uniform size were successfully synthesized using an advanced microemulsion technique. The effect of varying the surfactant cetyltrimethylammonium bromide （producing CSNRSCTAB） or sodium dodecyl sulphate （producing CSNRSSDS） upon the size and morphology of the CSNRs was investigated by field-emission scanning electron microscopy （FE-SEM）. X-ray diffractometry and Fourier transform infrared spectrophotometer revealed the existence of a strong interaction between the MWNRs and polystyrene, which implies that the polymer chains were successfully grafted onto the surface of the MWNRs. The CSNRs were blended with polypropylene by melt processing, and the effect of the CSNRs upon the morphological properties of the polypropylene matrix was investigated by FE-SEM and atomic force microscopy. It was observed that the polystyrene chains that grafted onto the CaSiO3 nanorods interfered with the aggregation of CaSiO3 nanorods in the polypropylene matrix and thus improved the compatibility of the CaSiO3 nanorods with the polypropylene matrix. Furthermore, the compatibility of CaSiO3 nanorods with polypropylene of CSNRsDs/polypropylene was superior to that of CSNRCTAB/polypropylene.

关键词： Core-shell structures Atomized microemulsion One-dimensional nanorods

Simultaneous effects of chemical reaction and Ohmic heating with heat and mass transfer over a stretching surface: A numerical study

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Chinese Journal of Chemical Engineering 2017年第9期25卷 1137-1142页

作者： S.R.mishra M.M.Bhatti Department of Mathematics Siksha ‘O’ Anusandhan University Shanghai Institute of Applied Mathematics and Mechanics Shanghai University

In this article, we have considered the simultaneous influence of ohmic heating and chemical reaction on heat and mass transfer over a stretching sheet. The effects of applied magnetic field are also taken into consideration while the induced magnetic field is not considered due to very small magnetics Reynolds number. The governing flow problem comprises of momentum, continuity, thermal energy and concentration equation which are transformed into highly nonlinear coupled ordinary differential equations by means of similarity transforms, which are then, solved numerically with the help of Successive Linearization method(SLM) and Chebyshev Spectral collocation method. Numerical values of skin friction coefficient, local Nusselt number, and Sherwood number are also taken into account with the help of tables. The physical influence of the involved parameters of flow velocity, temperature and concentration distribution is discussed and demonstrated graphically. The numerical comparison is also presented with the existing published results and found that the present results are in excellent agreement which also confirms the validity of the present methodology.

关键词： Ohmic heating Heat and mass transfer Chemical reaction Successive linearization method

Evaluation of flocculation characteristics of kaolinite dispersion system using guar gum:A green flocculant

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International Journal of Mining Science and Technology 2019年第5期29卷 745-755页

作者： R.K.Dwari B.K.mishra Mineral Processing Department CSIR-Institute of Minerals and Materials TechnologyBhubaneswar 751013India Indian Institute of Technology Goa 403401India

This paper reports the systematic investigation on the flocculation,sedimentation and consolidation characteristics of kaolinite using guar gum as a green ***-situ flocculation behavior of kaolinite at various pH,guar gum dosages,and ionic strength were studied using a light scattering *** effect of these parameters on the settling rate,solid consolidation,and supernatant liquid clarity was *** morphology of kaolinite and flocculated kaolinite aggregates were analyzed using *** morphology studies suggest that it is poorly crystalline with multiple steps on edge,broken edge;laminar with high aspect ratio and have rough basal *** complex irregularity on the basal surface and the presence of multiple steps in the edges,broken edges(hydroxyl groups)have facilitated the guar gum *** isoelectric point of kaolinite is pH *** pH,ionic strength and flocculant dosage have a significant effect on the kaolinite settling *** guar gum has exhibited excellent turbidity removal efficiency at pH *** turbidity removal is inefficient at pH ***,guar gum has shown high turbidity removal with 80%transmission at pH 10 in the presence of a KNO3 electrolyte.

关键词： Guar gum Dewatering Kaolinite Light scattering Morphology Flocculation

Balancing anti-viral innate immunity and immune homeostasis

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Cellular & Molecular Immunology 2018年第4期15卷 408-410页

作者： Shalabh mishra Himanshu Kumar Laboratory of Immunology and Infectious Disease Biology Department of Biological SciencesIndian Institute of Science Education and Research(IISER)Bhopal 462066India

Immunity against pathogenic challenge requires the engagement of pathogen origin molecular signatures by innate immune sensors that are expressed on various immune and non-immune *** microbial pathogen primarily includes various bacteria or *** sensing of viruses leads to the complex interaction of innate immune sensors,which consist of families of evolutionarily conserved germline-encoded molecules known as pathogen recognition receptors(PRRs).This family includes RIG-I-like receptors(RLRs),Toll-like receptors(TLRs),NOD-like receptors(NLRs)1 and DNA sensors(cGAS,IFI16,DAI and AIM2).2 The cytoplasmic helicases RIG-I and MDA5 are the key innate sensors that detect viral genomic RNAs.A few Toll-like receptors(TLRs),such as TLR3,TLR7,TLR8 and TLR9,are present on endocytic vesicles and are crucial for sensing nucleic acid from viruses and inducing the appropriate innate immune responses.

关键词： app signature immunity

Photocatalytic degradation of the diazo dye naphthol blue black in water using MWCNT/Gd,N,S-TiO_2 nanocomposites under simulated solar light

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Journal of Environmental Sciences 2015年第7期27卷 219-228页

作者： Gcina Mamba Xavier Yangkou Mbianda Ajay Kumar mishra Department of Applied Chemistry University of Johannesburg Faculty of Science DST-NRF Centre of Excellence in Strong Materials School of Physics University of the Witwatersrand Nanotechnology and Water Sustainability Unit College of Engineering Science and Technology University of South Africa Florida Campus

A simple sol-gel method was employed to prepare gadolinium, nitrogen and sulphur tridoped titania decorated on oxidised multiwalled carbon nanotubes（MWCNT/Gd,N,S-Ti O2）, using titanium（IV） butoxide and thiourea as titanium and nitrogen and sulphur source, respectively. Samples of varying gadolinium loadings（0.2%, 0.6%, 1.0% and3.0% Gd3＋） relative to titania were prepared to investigate the effect of gadolinium loading and the amounts of carbon nanotubes, nitrogen and sulphur were kept constant for all the samples. Furthermore, the prepared nanocomposites were evaluated for the degradation of naphthol blue black（NBB） in water under simulated solar light irradiation. Higher degradation efficiency（95.7%） was recorded for the MWCNT/Gd,N,S-Ti O2（0.6% Gd）nanocomposites. The higher photocatalytic activity is attributed to the combined effect of improved visible light absorption and charge separation due to the synergistic effect of Gd,MWCNTs, N, S and Ti O2. Total organic carbon（TOC） analysis revealed a higher degree of complete mineralisation of naphthol blue black（78.0% TOC removal） which minimises the possible formation of toxic degradation by-products such as the aromatic amines. The MWCNT/Gd,N,S-Ti O2（0.6% Gd） was fairly stable and could be re-used for five times,reaching a maximum degradation efficiency of 91.8% after the five cycles.

关键词： Gadolinium MWCNTs NBB Simulated solar light Tridoped titania

Enhancing scalability of peer-to-peer energy markets using adaptive segmentation method

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Journal of Modern Power Systems and Clean Energy 2019年第4期7卷 791-801页

作者： Mohsen KHORASANY Yateendra mishra Behrouz BABAKI Gerard LEDWICH Department of Electrical Engineering and Computer Science Queensland University of TechnologyBrisbaneAustralia Polytechnique Montréal MontréalCanada

This paper proposes an adaptive segmentation method as a market clearing mechanism for peer-to-peer(P2P)energy trading scheme with large number of market *** the proposed method,market players participate in the market by announcing their *** the first step,players are assigned to different segments based on their features,where the balanced k-means clustering method is implemented to form *** segments are formed based on the similarity between players,where the amount of energy for trade and its corresponding price are considered as features of *** the next step,a distributed method is employed to clear the market in each segment without any need to private information of *** novelty of this paper relies on developing an adaptive algorithm for dividing large number of market players into multiple segments to enhance scalability of the P2P trading by reducing data exchange and communication *** proposed approach can be used along with any distributed method for market *** this paper,two different structures including community-based market and decentralized bilateral trading market are used to demonstrate the efficacy of the proposed *** results show the beneficial properties of the proposed segmentation method.

关键词： Energy trading Market segmentation Distributed optimization Peer-to-peer(P2P)market Alternating direction method of multipliers

PLANTAGO PSYLLIUM-GRAFTED-POLYACRYLONITRILE:SYNTHESIS,CHARACTERIZATION AND ITS USE FOR SOLID REMOVAL FROM SEWAGE WASTEWATER

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Chinese Journal of Polymer Science 2005年第1期23卷 113-118页

作者： Anuradha mishra Alpa Yadav Monika Agarwal Rajani Srinivasan Department of Chemistry Institute of Engineering and Technology.CSJM UniversityKanpur-208 024IndiaDepartment of ChemistryInstitute of Engineering and Technology.CSJM UniversityKanpur-208 024IndiaDepartment of ChemistryInstitute of Engineering and Technology.CSJM UniversityKanpur-208 024India

Plantago psyllium mucilage(PSY),an anionic natural polysaccharide consisting of pentosan and uronic acidobtained from the seeds of Plantago psyllium(Plantago family),was grafted with acrylonitrile(AN).Graft copolymers wereprepared by ceric ion initiated solution polymerization technique and were characterized by FT-IR spectroscopy,scanningelectron microscopy and differential scanning *** copolymers are good flocculating agents for removal ofsuspended(SS)and total dissolved solid(TDS)in sewage wastewater *** effects of copolymer dose,pH andcontact time on flocculation capacity of one selected copolymer sample were studied by jar test *** suitable pHrange for maximum solid removal was 7.0 to 9.2 and the optimum copolymer dose was 1.2 mg/*** overall process forsolid removal took 4 h.X-ray diffraction(XRD)patterns of grafted copolymer,PSY grafted polyacrylonitrile(PSY-g-PAN)and solid waste,before and after treatment are used to suggest the interaction of the solid waste with PSY-g-PAN copolymer.

关键词： Plantago psyllium-g-polyacrylonitrile(PSY-g-PAN) Flocculant X-ray Jar test Sewage wastewater.

Evaluation of Dielectric Properties of CCTO-BT/Epoxy Composites for Electronic Applications

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Journal of Harbin Institute of Technology(New Series) 2024年第1期31卷 69-77页

作者： Swagatika mishra Punyapriya mishra Punyatoya mishra Dinesh Kumar mishra Krushna Prasad Shadangi Deepak Kumar Mohapatra Department of Mechanical Engineering Veer Surendra Sai University of TechnologyBurlaOdisha 768018India Department of Physics Parala Maharaja Engineering CollegeBerhampurOdisha 761003India Department of Metallurgical and Materials Engineering Veer Surendra Sai University of TechnologyBurlaOdisha768018India Department of Chemical Engineering Veer Surendra Sai University of TechnologyBurlaOdisha 768018India

In the current study,the calcium copper titanate(CCTO)/epoxy,barium titanate(BT)/epoxy and CCTO-BT/epoxy composite samples with variable volume fractions of CCTO and BT are fabricated using hand lay-up and compression moulding process. The composite samples are characterized for the frequency dependence on dielectric properties,conductivity,impedance spectroscopy and electrical modulus.X-ray diffraction(XRD)representation of CCTO-BT/epoxy composite samples confirmed the presence of both CCTO and BT ceramic samples separately. The dielectric characteristics of hybrid CCTO-BT/epoxy composite samples with CCTO∶BT ratio of 40∶60, 60∶40,and 50∶50 was found relatively better than those of single ceramic filler reinforced epoxy composites. AC conductivity analysis shows improvement in the results of hybrid filler-filled CCTO-BT/epoxy composites in comparison with single filler-filled epoxy composite.50∶50 CCTO-BT/epoxy composite shows the best AC conductivity value of~ 2.2 ×10^(-5) ohm^(-1)·m^(-1) at a higher frequency of 1MHz. The impedance analysis confirms the higher insulating properties for hybrid 40∶60 and 60∶40 CCTO-BT/epoxy composites with respect to the single and other hybrid ceramic epoxy composites. The analysis suggests the hybrid CCTO-BT/epoxy composites to be adopted as a potential dielectric material for energy storage devices and other electronic applications.

关键词： ceramic filler dielectric characterization hybrid Composite AC conductivity impedance analysis