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Applied Mathematics and Mechanics(English Edition) 2014年第9期35卷 1155-1166页

作者： D.M.WEI s.AL-AsHHAB Department of Mathematics University of New Orleans Department of Mathematics Al Imam Mohammad Ibn Saud Islamic University

The problem of the boundary layer flow of power law non-newtonian fluids with a novel boundary condition is studied. The existence and uniqueness of the solutions are examined, which are found to depend on the curvature of the solutions for different values of the power law index n. It is established with the aid of the Picard-Lindelof theorem that the nonlinear boundary value problem has a unique solution in the global domain for all values of the power law index n but with certain conditions on the curva- ture of the solutions. This is done after a suitable transformation of the dependent and independent variables. For 0 〈 n ≤ 1, the solution has a positive curvature, while for n 〉 1, the solution has a negative or zero curvature on some part of the global domain. some solutions are presented graphically to illustrate the results and the behaviors of the solutions.

关键词： existence uniqueness power law fluid boundary layer flow non-linearboundary value problem

Automated Teller Machine Authentication Using Biometric

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Computer systems science & Engineering 2022年第6期41卷 1009-1025页

作者： shumukh M.Aljuaid Arshiya s.Ansari Department of Information Technology College of Computer and Information SciencesMajmaah UniversityAl Majma’ah 11952Saudi Arabia

This paper presents a novel method of a secured card-less AutomatedTeller Machine (ATM) authentication based on the three bio-metrics measures. Itwould help in the identification and authorization of individuals and would provide robust security enhancement. Moreover, it would assist in providing identi-fication in ways that cannot be impersonated. To the best of our knowledge, thismethod of Biometric_ fusion way is the first ATM security algorithm that utilizesa fusion of three biometric features of an individual such as Fingerprint, Face, andRetina simultaneously for recognition and authentication. These biometric imageshave been collected as input data for each module in this system, like a fingerprint, a face, and a retina module. A database is created by converting theseimages to YIQ color space, which is helpful in normalizing the brightness levelsof the image hence mainly (Y component’s) luminance. Then, it attempt toenhance Cellular Automata segmentation has been carried out to segment the particular regions of interest from these database images. After obtaining segmentation results, the featured extraction method is carried out from these criticalsegments of biometric photos. The Enhanced Discrete Wavelet Transform technique (DWT Mexican Hat Wavelet) was used to extract the features. Fusion ofextracted features of all three biometrics features have been used to bring in themultimodal classification approach to get fusion vectors. once fusion vectorsware formulated, the feature level fusion technique is incorporated based on theextracted feature vectors. These features have been applied to the machine learning algorithm to identify and authorization of multimodal biometrics for ATMsecurity. In the proposed approach, we attempt at useing an enhanced Deep Convolutional neural network (DCnn). A hybrid optimization algorithm has beenselected based on the effectiveness of the features. The proposed approach resultswere compared with existing algorithms ba

关键词： ATM security biometrics face recognition fingerprint fusion technique hybrid optimization retina recognition image segmentation

Methodology to locate and quantify radial winding deformation in power transformers

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High Voltage 2017年第1期2卷 17-24页

作者： steven D.Mitche James s.Wesh school of Electrical and Computer Engineering University of NewcastleCallaghanN.S.W 2308Australia

Frequency response analysis(FRA)is a tool that can be used to detect changes within the structural geometry of a *** application of FRA is to detect winding displacement after the transformer experiences an overcurrent *** paper proposes a methodology which will facilitate both locating and quantifying winding *** procedure is based on the fitting of a Gray Box transformer model to FRA measurements which were recorded both before and after the *** variation in key parameters of the model can then be used to quantify winding deformation *** research will demonstrate the applicability of this approach to a wide range of transformer applications by using FRA from a modified 1.3 MVA distribution transformer,and assessing the change in key parameters relative to the emulated buckling introduced to the *** authors propose that this approach is ideally suited for use within an automated diagnostic system which will locate,diagnose and quantify winding deformation within power transformers.

关键词： winding deformation power

Experimental Research for Refractories Used in High-Turbulent-Mixer (HTM)-Reactor

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Journal of University of science and Technology Beijing 2001年第2期8卷 95-97页

作者： Yanping Bao, H. W Gudenau, o. s. Kweon (Metallurgy school, University of science & Technology Beijing, Beijing 100083, China) (Institute of Ferrous Metallurgy, Aachen University, Aachen D-52056, Germany) Univ sci & Technol Beijing Met Sch Beijing 100083 Peoples R China Univ Aachen Inst Ferrous Met D-52056 Aachen Germany

The high turbulent mixer (HTM) process is benefit for improving the quality of iron and steel, but the refractory of the reactor is easy to be eroded by slag and liquid metal at high temperature. Especially for the violent mixing in HTM, refractory can also be impacted by molten metal (iron or steel), so it is very important to study and find out new refractory to meet the demand of HTM. suitable refractory not only can stand the eroding of slag and liquid metal, but also can reduce the loss of electromagnetic energy. According to the experimental results, the influence of different refractory on electromagnetic force is unconspicuous, the refractory with Al2o3-base is better than that with Mgo-base for standing the erosion by slag and iron. Al2o3-base refractory is more suitable for HTM process.

关键词： refractory erode high turbulence mixer (HTM) electromagnetic force

Resin Catalyst Hybrids

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复旦学报（自然科学版） 2005年第5期44卷 644-645页

作者： s. Asaoka Faculty of Environmental Engineering The University of KitakyushuKitakyushu 808-0135 Japan

1Introduction: What are resin catalyst hybrids?There are typically two types of resin catalyst. one is acidic resin which representative is polystyrene sulfonic acid. The other is basic resin which is availed as metal complex support. The objective items of this study on resin catalyst are consisting of pellet hybrid, equilibrium hybrid and function hybrid of acid and base,as shown in Fig. 1[1-5]

关键词：树脂催化剂混合物磺酸基

Transcriptional Regulation and signaling in Phosphorus starvation: What About Legumes?

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Journal of Integrative Plant Biology 2008年第10期50卷 1213-1222页

作者： oswaldo Valds-López Georgina Hernndez Centro de Ciencias Genómicas Centre for Genomic sciences Universidad Nacional Autónoma de Mxico National University of MexicoCuernavaca Morelos 62210 Mxico

The availability of soil phosphorus （P）, an essential element, is one of the most important requirements for plant growth and crop production. The morphological and physiological adaptations evolved by plants to cope with P starvation have been well characterized. several P deficiency plant responses are regulated at the transcriptional level. Microarray analysis has generated valuable information on global gene expression in Arabidopsis thaliana grown under P-stress. Despite the identification of P responsive genes, little is known about the regulation of gene expression changes. Four transcription factors, PHRI, WRKY75, ZAT6 and BHLH32, involved in P starvation signaling have been characterized in Arabidopsis, and signaling pathways are deciphered. This review analyzes the current knowledge of transcriptional regulation of P starvation responses in Arabidopsis vis-a-vis legumes such as lupine, common bean and Medicago truncatula. The knowledge on regulatory and signaling mechanisms involved in P acquisition and use in legumes will be useful for improvement of these crops, which account for a large proportion of the world＇s crop production, providing good nutritional quality feed and food.

关键词： legumes phosphorus starvation responses P starvation signaling pathways transcriptional regulation transcription factors.

感染松萎蔫病的葡萄牙海岸松中内生细菌的分离

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南京林业大学学报（自然科学版） 2011年第3期35卷 149-150页

作者： Vieira dos santos M C Proenca D A n Fonseca L Abrantes I M de o Morais P V IMAR-CMA Departamento de ZoologiaFaculdade de Ci ncias e Tecnologia Universidade de Coimbra (FCTUC) 3004-517 Coimbra Portugal Departamento de Zoologia FCTUC 3004-517 Coimbra Portugal Departamento de Bioqu mica FCTUC 3001-401 Coimbra Portugal

葡萄牙海岸松被松材线虫感染后的迅速死亡表明有其他生物的介入。内生细菌是一类普遍存在的生物,它在大部分植物中能形成种群。松材线虫携带的细菌也有可能导致海岸松的迅速死亡。笔者通过培养分离得到的细菌分离物,利用扩增性核糖体Dn... 详细信息

葡萄牙海岸松被松材线虫感染后的迅速死亡表明有其他生物的介入。内生细菌是一类普遍存在的生物,它在大部分植物中能形成种群。松材线虫携带的细菌也有可能导致海岸松的迅速死亡。笔者通过培养分离得到的细菌分离物,利用扩增性核糖体DnA限制性酶切片段分析(ARDRA)和变性梯度凝胶电泳分析(DGGE),了解被感染的和未被感染的海岸松内生细菌的种群结构,以分析鉴定与松材线虫相关的细菌。从样树和松材线虫中分离的细菌Alphaproteobacteria、Bacteroidetes属仅存在于内生菌中,而Actinobacteria、Firmicutes被发现仅与松材线虫相关。ARDRA和DGGE分析证明内生菌种群结构多样性的差异可能与松材线虫的入侵有关。这种细菌种群的多样性差异似乎与Burkholderia、Pseudomonas和Luteibacter属中的某些菌株有关。而从树中分离出来的Janthinobacterium agaricidamnosum、***和Dyella yeojuensis与松材线虫相关。

关键词：松材线虫松萎蔫病海岸松种群结构

Global Attractors and Determining Modes for the 3D navier-stokes-Voight Equations

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Chinese Annals of Mathematics,series B 2009年第6期30卷 697-714页

作者： Varga K.KALAnTARoV Edriss s.TITI Department of Mathematics Ko UniversityRumelifeneri YoluSariyer 34450IstanbulTurkey Department of Mathematics and Department of Mechanical and Aerospace Engineering University of California IrvineCalifornia 92697USA Department of Computer science and Applied Mathematics Weizmann Institute of ScienceRehovot 76100Israel

The authors investigate the long-term dynamics of the three-dimensional navier- stokes-Voight model of viscoelastic incompressible fluid. specifically, upper bounds for the number of determining modes are derived for the 3D navier-stokes-Voight equations and for the dimension of a global attractor of a semigroup generated by these equations. Viewed from the numerical analysis point of view the authors consider the navier-stokes-Voight model as a non-viscous （inviscid） regularization of the three-dimensional navier-stokes equations. Furthermore, it is also shown that the weak solutions of the navier-stokes- Voight equations converge, in the appropriate norm, to the weak solutions of the inviscid simplified Bardina model, as the viscosity coefficient v →0.

关键词： navier-stokes-Voight navier-stokes-Voigt Global attractor Determining modes Regularization of the navier-stokes Turbulence models Viscoelastic models

open charm mesons and charmonia in magnetized strange hadronic matter

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Chinese Physics C 2022年第8期46卷 91-113页

作者： Amal Jahan C.s. Amruta Mishra Department of Physics Indian Institute of TechnologyNew Delhi-110016India

We investigate the in-medium masses of open charm mesons(D(D^(0),D^(+)),■(■^(0),D^(-)),D_(s)(D_(s)^(+),D_(s)^(-)))and charmonium states(J/ψ,ψ(3686),ψ(3770),χ_(c0),χ_(c2)) in strongly magnetized isospin asymmetric strange hadronic matter using a chiral effective *** the presence of a magnetic field,the number and scalar densities of charged baryons have contributions from Landau energy *** mass modifications of open charm mesons result from their interactions with nucleons,hyperons,and the scalar fields(the non-strange field σ,strange field C and isovector field δ) in the presence of a magnetic *** mass modifications of the charmonium states result from the modification of gluon condensates in a medium simulated by the variation in the dilaton field(χ) in the chiral effective *** effects of finite quark masses are also incorporated in the trace of the energy-momentum tensor in quantum chromodynamics to investigate the mass shifts of charmonium *** in-medium masses of open charm mesons and charmonia are observed to decrease with an increase in baryon *** charged D^(+),D^(-),Z_(s)^(+),and D_(s)^(-)mesons have additional positive mass shifts due to Landau quantization in the presence of a magnetic *** effects of the strangeness fraction are observed to be more dominant for ■ mesons compared with D *** mass shifts of charmonia are observed to be larger in hyperonic media compared with nuclear media when the effect of the finite quark mass term is *** medium mass modifications can have observable consequences on the production of the open charm mesons and charmonia in high-energy asymmetric heavy-ion collision experiments.

关键词： open charm mesons charmonium states strange hadronic matter magnetic field heavy-ion collision chiral effective model