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AMINO-TRIs-(METHYLENEPHOsPHONIc AcID)LAYERs ADsORPTION ON AA6061 ALUMINUM ALLOY

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Acta Metallurgica sinica(English Letters) 2008年第5期21卷 355-361页

作者： s.H. Wang c.s. Liu F.J. shan G.c. Qi Key Laboratory for Anisotropy and Texture of Materials Ministry of Education Northeastern University Shenyang 110004 China Material＆ chemical Engineering college Liaoning University of Technology Jinzhou 121001 China

The amino-tri-（methylenephosphonic acid） layers were adsorbed on the surface of AA6061 aluminum alloy for improving the lacquer adhesion and corrosion inhibition as a substitute for chromate coatings. The surface structure and characteristic of the amino-tri-（methylenephosphonic acid） layers on AA6061 aluminum alloy were investigated by means of XPs and ATR-FTIR analysis. The analyzed results showed that the amino-tri-（methylenephosphonic acid） adsorption layers adsorb on the surface of aluminium alloy via acid-base interaction in a bi-dentate conformation. After the amino-tri-（methylenephosphonic acid） layers were coated with epoxy resin, the layers showed good adhesive strength and favorable corrosion resistance in contrast to chromate coatings.

关键词： Amino-tri-(methylenephosphonic acid) layer Organophosphonate Aluminum alloy corrosion resistance

A realistic model for charged strange quark stars

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chinese Physics c 2017年第1期41卷 123-130页

作者： s.Thirukkanesh F.c.Ragel Department of Mathematics Eastern University Chenkalady Sri Lanka Department of Physics Eastern University Chenkalady Sri Lanka.

We report a general approach to solve an Einstein-Maxwell system to describe a static spherically symmetric anisotropic strange matter distribution with linear equation of state in terms of two generating *** is examined by choosing Tolmann IV type potential for one of the gravitational potentials and a physically reasonable choice for the electric field. Hence, the generated model satisfies all the required major physical properties of a realistic star. The effect of electric charge on physical properties is highlighted.

关键词： Einstein-Maxwell system equation of state strange charged matter

Evaluation of Dry sliding Wear Behaviour of Plasma Transferred Arc Hardfaced stainless steel

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Journal of Iron and steel Research International 2009年第4期16卷 49-54页

作者： c s Ramachandran V Balasubramanian R Varahamoorthy centre for Materials Joining and Research(cEMAJOR) Department of Manufacturing EngineeringAnnamalai University

The effects of different experimental conditions on the dry sliding wear behavior of stainless steel surface produced by plasma transferred arc （PTA） hardfacing process were studied. The wear test was conducted in a pinon-roller wear testing machine, at constant sliding distance of 1 kin. Mathematical models were developed to estimate wear rate incorporating with rotational speed, applied load and roller hardness using statistical tools such as design of experiments, regression analysis and analysis of variance. It is found that the wear resistance of the PTA hardfaced stainless steel surface is better than that of the carbon steel substrate.

关键词： dry sliding wear plasma transferred arc hardfacing carbon steel stainless steel variance analysis experimental design

A Novel Method for Node connectivity with Adaptive Dragonfly Algorithm and Graph-Based m-connection Establishment in MANET

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computers, Materials & continua 2020年第11期65卷 1649-1670页

作者： s.B.Manoojkumaar c.Poongodi Department of computer science and Engineering J.K.K.Munirajah College of TechnologyGobichettipalayamErode638506India Department of Electronics and communication Engineering Bannari Amman Institute of TechnologySathyamangalamErode638401India

Maximizing network lifetime is measured as the primary issue in Mobile Ad-hoc Networks(MANETs).In geographically routing based models,packet transmission seems to be more appropriate in dense *** involvement of the Heuristic model directly is not appropriate to offer an effectual solution as it becomes NP-hard issues;therefore investigators concentrate on using Meta-heuristic *** Optimization(DFO)is an effective meta-heuristic approach to resolve these problems by providing optimal ***,Meta-heuristic approaches(DFO)turn to be slower in convergence problems and need proper computational time while expanding network ***,DFO is adaptively improved as Adaptive Dragonfly Optimization(ADFO)to fit this model and re-formulated using graph-based m-connection establishment(G-𝑚𝑚cE)to overcome computational time and DFO’s convergence based problems,considerably enhancing DFO ***(G-𝑚𝑚cE),connectivity Zone(cZ)is chosen among source to destination in which optimality should be under those connected regions and ADFO is used for effective route establishment in cZ indeed of complete networking *** measure complementary features of ADFO and(G-𝑚𝑚cE),hybridization of DFO-(G-𝑚𝑚cE)is anticipated over dense circumstances with reduced energy consumption and delay to enhance network *** simulation was performed in MATLAB environment.

关键词： Routing connectivity zone ADFO mobile ad-hoc network graph-based m-connection establishment

screening of stimulatory effects of dietary risk factors on mouse intestinal cell kinetics

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World Journal of Gastroenterology 2005年第2期11卷 242-248页

作者： Pooja shivshankar shyamala c.s.Devi Department of Biochemistry and Molecular Biology University of MadrasGuindy CampusChennai- 600 025India

AIM: Although epidemiological and experimental studies validate influence of genetic, environmental and dietary factors in the causation of various types of cancers including colon, results from all these sources are inconclusive. Hypothesizing that high fat diet and obesity are among the major predisposing factors in the incidence of colon cancer, we evaluated the role of diet constituted with food material derived from a tropical plant, Tamarindus indica Linn (TI). METHODs: A two part randomized double-blind study was conducted employing inbred swiss albino mice from a single generation for the whole investigation. One day-old neonates (n=12) were subcutaneously administered with monosodium glutamate (MsG) to induce obesity (OB). At weaning these animals were maintained on modified AIN-76 diet supplemented with 10% TI and 10% fat bolus (w/w,TIFB) for 8 wk. subsequently, in the second part of study, four groups of animals belonging to the same generation, age and gender (n=12 per group), were maintained on: AIN-76 control diet (cD); AIN-76 mixed with 10% TI extract (TI); and, mixed with 10% TI and 10% FB (TIFB) for 8 wk, to determine intestinal crypt cell proliferation, functionally-specific enzyme activities, fermentation profile, and energy preferences. REsULTs: We observed a significant increase in the crypt cell production rate in distal colonic segment of experimental animals when compared with the controls. This segment also contained significantly low butyrate levels compared to control and TIFB groups. All the experimental groups showed a gross decrease in the enzyme activities viz., succinate dehydrogenase, acid-galactosidase and dipeptidyl amino peptidase IV demonstrating pathological stress caused by the test regimens, and an altered metabolic flux in the cellular environment. cONcLUsION: We have demonstrated a cumulative response to the three dietary factors, one of which (TI) is reported, herein, for the first time to modulate kinetics of large intesti

关键词： Large intestinal mucosa Kinetics Tamarindus indica Linn Diet

c_c(X)spaces with X Locally compact

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Acta Mathematica sinica,English series 2007年第9期23卷 1593-1600页

作者： J.c.FERRANDO s.MOLL centro de Investigación Operativa Universidad Miquel Hernández Departamento de Matemática Aplicada Universidad Politécnica

In this paper, we show, among other results, that if X is a [separable] locally compact space X [satisfying the first countability axiom] then the space cc （X） has countable tightness [if and only if it has bounding tightness] if and only if it is Frechet-Urysohn, if and only if cc （X） contains a dense （LM） subspace and if and only if X is a-compact.

关键词： Frechet-Urysohn space countable [bounding] tightness (LM)-space

Histomorphological and Histochemical Alterations Following short-term Inhalation Exposure to sulfur Mustard on Visceral Organs of Mice

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Biomedical and Environmental sciences 1999年第3期12卷 201-213页

作者： s·c·PANT R·VIJAYARAGHAVAN DivisionofpharmacologyandTcxicology DefenceResearchandDevelopmentEstablishmentJhansiRoadGwalior－4740

Toxic effects of inhaled sulfur mustard (sM) on the histology of visceral organs was investigaed by exposing mice to 84. 6mg/m3 for 1h duration, using controlled single exposure conditions. A progressive fall in body weight from third day onwards was noticed. Light microscopic examination of the pulmonary tissue of these animals at 6 h post exposure revealed that the tracheobronchial epithelium remained intact, but was infiltrated by inflammatory cells. By 24 h post exposure, the mucosecretory cells were destroyed. The indanunatory reaction was maximum at 48 h. By 7th day post exposure there was swelling and vacuolation of lung parenchymal cells and thrombi formation. In addition sM caused congestion and hemorrhage at alveolar level. sM also caused granulovacuolar degeneration with perinuclear clumping of the cytopasm of hepatocytes and renal parenchymal cells. Renallesions were chazacterized by congestion and hemorrhage. Among visceral tissues, maximum atrophywas observed in spleen. Distribution of lesions increased with post exposure period. The maximum lesions were observed at 7th day post-exposure.

关键词： Animals Dermatologic Agents Female Hemorrhage Inhalation Exposure Kidney Lung Mice Mustard Gas Time Factors Weight Loss

Free vibration and transient response of double curved beams connected by intermediate straight beams

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 37-62页

作者： R.A.JAFARI-TALOOKOLAEI H.GHANDVAR E.JUMAEV s.KHATIR T.cUONG-LE school of Mechanical Engineering Babol Noshirvani University of Technology Department of Mechanical Engineering Faculty of Engineering New Uzbekistan University University of Business and science center for Engineering Application and Technology solutions Ho Chi Minh City Open University

This paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FGP) materials. The strain potential and kinetic energies of each beam along with the work done by the external force are calculated. Additionally, a higher-order beam element is introduced to derive stiffness and mass matrices, along with the force vector. The curved and straight beams are discretized, and their assembled stiffness, mass matrices, and force vectors, are *** conditions at the joints are used to derive the total matrices of the entire structure. subsequently, the natural frequencies and transient response of the system are determined. The accuracy of the mathematical model and the self-developed computer program is validated through the comparison of the obtained results with those of the existing literature and commercial software ANsYs, demonstrating excellent ***, a comprehensive study is conducted to investigate the effects of various parameters on the free vibration and transient response of the considered structure.

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Peristaltic transport of rheological fluid:model for movement of food bolus through esophagus

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Applied Mathematics and Mechanics(English Edition) 2012年第3期33卷 315-332页

作者： J.c.MIsRA s.MAITI Department of Mathematics Institute of Technical Education and ResearchSiksha 'O' Anusandhan UniversityBhubaneswar 751030India school of Medical science and Technology & center for Theoretical studies Indian Institute of TechnologyKharagpur 721302India

Fluid mechanical peristaltic transport through esophagus is studied in the paper. A mathematical model has been developed to study the peristaltic transport of a rheological fluid for arbitrary wave shapes and tube lengths. The Ostwald-de Waele power law of a viscous fluid is considered here to depict the non-Newtonian behaviour of the fluid. The model is formulated and analyzed specifically to explore some important information concerning the movement of food bolus through esophagus. The analysis is carried out by using the lubrication theory. The study is particularly suitable for the cases where the Reynolds number is small. The esophagus is treated as a circular tube through which the transport of food bolus takes place by periodic contraction of the esophageal wall. Variation of different variables concerned with the transport phenomena such as pressure, flow velocities, particle trajectory, and reflux is investigated for a single wave as well as a train of periodic peristaltic waves. The locally variable pressure is seen to be highly sensitive to the flow index ＂n＂. The study clearly shows that continuous fluid transport for Newtonian/rheological fluids by wave train propagation is more effective than widely spaced single wave propagation in the case of peristaltic movement of food bolus in the esophagus.

关键词： non-Newtonian fluid food bolus esophagus peristaltic transport flow reversal single wave wave train particle trajectory