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Propagation of an electromagnetic soliton in an anisotropic biquadratic ferromagnetic medium

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Chinese Physics B 2013年第3期22卷 275-281页

作者： L.Kavitha M.saravanan D.Gopi Department of Physics Periyar University The Abdus Salam International Centre for Theoretical Physics TriesteItaly Center for Nanoscience and Nanotechnology Periyar University Department of Chemistry Periyar University

Information storage technology based on anisotropic ferromagnets with sufficiently high magneto-optical effects has received much attention in recent ***-optical recording combines the merits of magnetic and optical *** investigate the magneto-optical effects on a biquadratic ferromagnet and show that the dynamics of the system are governed by a perturbed nonlinear Schro¨dinger *** evolutions of amplitude and velocity of the soliton are found to be time independent,thereby admitting the lossless propagation of the electromagnetic soliton in the medium,which may have potential applications in soliton based optical communication *** also exploit the role of perturbation,which has a significant impact on the propagation of an electromagnetic soliton.

关键词： solitons classical spin models Maxwell equations nonlinear dynamics

Design and synthesis of 4-(1-(4-chlorobenzyl)-2,3-dioxoindolin-5-yl)-1 -(4-substituted/unsubstituted benzylidene) semicarbazide:Novel agents with analgesic,anti-inflammatory and ulcerogenic properties

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Chinese Chemical Letters 2012年第5期23卷 541-544页

作者： Chinnasamy Rajaram Prakash Sundararajan Raja Govindaraj saravanan Department of Medicinal Chemistry DCRM Pharmacy CollegeJNTUHAndhra PradeshIndia Department of Pharmaceutical Chemistry GITAM Institute of PharmacyGITAM UniversityVizagAndhra PradeshIndia Medicinal Chemistry Research Laboratory Bapatla College of PharmacyBapatla 522 101Andhra PradeshIndia

A new series of isatin semicarbazide derivatives（7a-7j） were synthesized and characterized by spectroscopic means and elemental *** and anti-inflammatory screening was performed using tail-flick technique and the carrageenan-induced foot paw edema test *** ulcerogenicity was also determined for all the *** of the compounds showed moderate enhancement of the *** the synthesized derivatives,compound 7d showed higher analgesic, antiinflammatory and one-third of ulcer index of the reference drug.

关键词： Isatin Anti-nociceptive Schiff base Ulcerogenicity

Structural,Morphological and Electrical Properties of In-Doped Zinc Oxide Nanostructure Thin Films Grown on p-Type Gallium Nitride by Simultaneous Radio-Frequency Direct-Current Magnetron Co-Sputtering

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Chinese Physics Letters 2016年第6期33卷 77-80页

作者： R.Perumal Z.Hassan R.saravanan Institute of Nano-Optoelectronics Research and Technology School of PhysicsUniversiti Sains Malaysia Department of Physics University College of Engineering PattukkottaiAnna University Chennai

Zinc oxide （ZnO） is one of the most promising and frequently used semiconductor materials. In-doped nanos- tructure ZnO thin films are grown on p-type gallium nitride substrates by employing the simultaneous rf and dc magnetron co-sputtering technique. The effect of In-doping on structural, morphological and electrical properties is studied. The different dopant concentrations are accomplished by varying the direct current power of the In target while keeping the fixed radio frequency power of the ZnO target through the co-sputtering deposition technique by using argon as the sputtering gas at ambient temperature. The structural analysis confirms that all the grown thin films preferentially orientate along the c-axis with the wurtzite hexagonal crystal structure without having any kind of In oxide phases. The presenting Zn, 0 and In elements＇ chemical compositions are identified with EDX mapping analysis of the deposited thin films and the calculated M ratio has been found to decrease with the increasing In power. The surface topographies of the grown thin films are examined with the atomic force microscope technique. The obtained results reveal that the grown film roughness increases with the In power. The Hall measurements ascertain that all the grown films have n-type conductivity and also the other electrical parameters such as resistivity,mobility and carrier concentration are analyzed.

关键词： ZnO of Structural,Morphological and Electrical Properties of In-Doped Zinc Oxide Nanostructure Thin Films Grown on p-Type Gallium Nitride by Simultaneous Radio-Frequency Direct-Current Magnetron Co-Sputtering that by were been In EDX on

Search and Analysis of Identical Reverse Octapeptides in Unrelated Proteins

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Genomics, Proteomics & Bioinformatics 2013年第2期11卷 114-121页

作者： Konda Mani saravanan Samuel Selvaraj Department of Bioinformatics School of Life SciencesBharathidasan University

For the past few decades, intensive studies have been carried out in an attempt to under- stand how the amino acid sequences of proteins encode their three dimensional structures to perform their specific functions. In order to understand the sequence-structure relationship of proteins, sev- eral sub-sequence search studies in non-redundant sequence-structure databases have been under- taken which have given some fruitful clues. In our earlier work, we analyzed a set of 3124 non- redundant protein sequences from the Protein Data Bank （PDB） and retrieved 30 identical octapep- tides having different secondary structures. These octapeptides were characterized by using different computational procedures. This prompted us to explore the presence of octapeptides with reverse sequences and to analyze whether these octapeptides would adopt similar structures as that of their parent octapeptides. Our identical reverse octapeptide search resulted in the finding of eight octapep- tide pairs （octapeptide and reverse octapeptide） with similar secondary structure and 23 octapeptide pairs with different secondary structures. In the present work, the geometrical and biophysical char- acteristics of identical reverse octapeptides were explored and compared with unrelated octapeptide pairs by using various computational tools. We thus conclude that proteins containing identical reverse octapeptides are not very abundant and residues in the octapeptide pairs do not contribute to the stability of the protein. Furthermore, compared to unrelated octapeptides, identical reverse octapeptides do not show certain biophysical and geometrical properties.

关键词： Reverse octapeptide Oetapeptide search Dipole and quadrapole Volume and surface area Protein stability

Temporal and spatial variation in the sediment volume along the beaches between Ovari and Kanyakumari(SE INDIA)

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International Journal of Sediment Research 2013年第3期28卷 384-395页

作者： S.saravanan N.CHANDRASEKAR V.JOEVIVEK Centre for GeoTechnology Manonmaniam Sundaranar University Civil Engineering Department Christ the King Engineering College

A 2-year set of profile data from Ovari to Kanyakumari Beach,SE India has been analysed by using empirical orthogonal function(EOF) techniques to identify characteristic patterns of temporal and spatial variation in the sediment volume of the *** results show that variation in the sediment volume of the beach is determined by interaction between the biennial and seasonal *** analysis the pattern of alongshore sediment exchange along the study *** method facilitated separation of onshore-offshore and alongshore modes of sediment transfer and identification of the patterns of alongshore sediment *** eigenfunction modes confirm the dominance of biennial,annual,and biannual sediment transfers occurring on study *** sediment movement along the shoreline of study area is mainly governed by the forces associated with the incoming waves and the availability of sediments within the *** present investigation has been made as an attempt to appreciate the sediment movement in relation to wave activity along the *** longshore sediment transport is intensive in the northerly direction as compared to southerly *** normal condition is for and to be moved annually or more frequently in the shallows and on the *** and wave-driven currents cause longshore drift of sand along the beach and offshore.

关键词： Beach Profile Sediment movement Beach volume change India

The role of YAP in the control of the metastatic potential of oral cancer

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Oncology Research 2021年第6期29卷 377-391页

作者： USAMA SHARIF AHMAD KARTHIK saravanan HONG WAN Centre for Oral Immunobiology and Regenerative Medicine Institute of DentistryBarts and the LondonSchool of Medicine and DentistryLondonE12ATUK

The Yes-associated protein(YAP)is a downstream effector of the Hippo pathway and acts as a key transcription co-factor to regulate cell migration,proliferation,and *** Hippo pathway is evolutionarily conserved and controls tissue growth and organ *** and heterogeneity of this pathway are found in cancers,including oral squamous cell carcinoma(OSCC),leading to overexpression of YAP and its regulated proliferation *** activity of YAP is associated with its nuclear expression and is negatively regulated by the Hippo kinase-mediated phosphorylation resulting in an induction of its cytoplasmic *** review focuses on the role of YAP in OSCC in the context of cancer metastatic potential and highlights the latestﬁndings about the heterogeneity of YAP expression and its nuclear transcription activity in oral cancer cell *** review also discusses the potential target of YAP in oral cancer therapy and the recentﬁnding of the unprecedented role of the desmosomal cadherin desmoglein-3(DSG3)in regulating Hippo-YAP signaling.

关键词： Review YAP Phospho-YAP Desmoglein-3 TAZ Hippo pathway desmosomes OSCC Oral cancer cell migration

A solution to stochastic unit commitment problem for a wind-thermal system coordination

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Frontiers in Energy 2014年第2期8卷 192-200页

作者： B. saravanan Shreya MISHRA Debrupa NAG School of Electrical Engineering VIT University Vellore 632014 India

Unit commitment （UC） problem is one of the most important decision making problems in power system. In this paper the UC problem is solved by considering it as a real time problem by adding stochasticity in the generation side because of wind-thermal co-ordination system as well as stochasticity in the load side by incorporating the randomness of the load. The most important issue that needs to be addressed is the achievement of an economic unit commitment solution after solving UC as a real time problem. This paper proposes a hybrid approach to solve the stochastic UC problem considering the volatile nature of wind and formulating the UC problem as a chance constrained problem in which the load is met with high probability over the entire time period.

关键词： unit commitment (UC) randomness wind generation univariate chance constrained

Structural,electrical and magnetic studies on Y-Fe-O system

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Journal of Rare Earths 2009年第6期27卷 1013-1017页

作者： Anbarasu Venugopalan Manigandan Appasamy Sathiyakumar saravanan Kaliyaperumal Kothandaraman Jayabalan Kothandaraman Department of Physics Anna University Department of Physics Pondicherry Engineering College

The compounds of iron substituted yttrium oxide systems have been prepared for the importance in the field of magneto electric *** polycrystalline samples of Y2–xFexO3–y(x=0.1,0.2) were prepared by solid-state reaction *** single-phase formation of these compounds was confirmed by X-ray diffraction *** was found that the samples crystallized in tetragonal phase and the lattice parameters were calculated as a=1.0559(7) nm,c=1.0832(9) nm for Y1.9Fe0.1O3–y and a=1.0545(6) nm,c=1.0841(8)...

关键词： magnetoelectric materials characterization methods powder technology diffused reflectance spectroscopy vibrating sample magnetometer electron paramagnetic resonance rare earths

Analgesic and anti-inflammatory activities of Passiflora foetida L.

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Asian Pacific Journal of Tropical Medicine 2011年第8期4卷 600-603页

作者： Sasikala V saravanan S Parimelazhagan T Bioprospecting Laboratory Department of BotanyBharathiar UniversityCoimbatoreTamil NaduIndia

Objective:To investigate the analgesic and anti-inflammatory activities of ethanol extract of Passiflora foetida(***) ***:Ethanol extract of *** leaf was evaluated for analgesic action by acetic acid-induced writhing and hot plate method in albino *** anti-inflammatory property of ethanolic leaf extract was tested by carrageenan induced acute paw edema and histamine induced acute paw edema in ***:The dose 200 mg/kg of P. foetida leaf extract exhibited highest significant analgesic activity[(13.50±0.43) min]at a reaction time of 20 min in hot plate method in *** ethanol extract of leaf dose 100 mg/kg produced a highly significant anti inflammatory effect[(1.302±0.079) mL]in ***:It is very clear that *** also has analgesic and anti-inflammatory activities for the pharmaceuticals.

关键词： Passiflora foetida Carrageenan Histamine Analgesic Anti-inflammatory