Ramanathapuram, India
Ramanathapuram, India

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Arunprasanna V.,Bharathidasan University | Kannan M.,Bharathidasan University | Anbalagan S.,Sethupathy Government Arts College | Krishnan M.,Bharathidasan University
Journal of Entomology | Year: 2017

Background: The complete understanding of feeding and reproduction strategies during metamorphosis of silkworm Bombyx mori is very essential, for that a comparative proteomics analysis was used to investigate the proteins extracted from the head of the larva and adult of Bombyx mori. Materials and Methods: Proteins were separated and identified by using 2D-PAGE and MALDI-TOF-TOF-MS analysis respectively. The functions of each proteins were annotated using STRAP GO analysis. The expression level of each protein spots between larvae and adult were analyzed using 2D image platinum 7. Results: Using 2-DE gels stained with coomassie staining revealed, 315±3 and 296±3 proteins spots with pI ranges of 4-10 and 3.5-8 in the larva and adult head, respectively. Thirty proteins were identified based on differential and unique expression in the head of the larva and adult of B. mori. Among the 30 identified proteins, comparatively 10 proteins were up regulated and 6 proteins were down regulated in the larvae, whereas 6 proteins were up regulated and 10 were down regulated in the adult. In addition, 6 and 8 unique proteins expressions were observed in the larvae and adult, respectively. Database search combined with STRAP GO analysis revealed that few up regulated and unique protein in the larvae such as odorant binding proteins, argonaute protein, apolipophorin III precursor, enolase and iron-ion transport proteins were localized to regulate the feeding activity of larva. Furthermore, some proteins are highly and uniquely expressed from adult head such as glycoprotein hormone, N-acetyltranferase, cytochrome p450, DNA binding and intracellular transport protein, clathrin coat assembly protein and metabolic enzyme which may regulate adult ecolsion and reproduction. Conclusion: The results suggest and confirmed that the protein expression in each stage could alter the behaviors of the insect related to larval feeding, growth and reproduction in the adult. Further the characterization and functions of other proteins identified are discussed. This study will help to improve the silk production which leads to economy improvement in sericulture industry. © 2017 Vimalanathan Arunprasanna et al.


Anbalagan S.,Sethupathy Government Arts College | Kannan M.,Sethupathy Government Arts College | Dinakaran S.,The Madura College | Krishnan M.,Bharathidasan University
Journal of Vector Borne Diseases | Year: 2017

Background & objectives: Black flies (Diptera: Simuliidae) are ecologically and medically important insects. Female adults of black flies are the solitary vectors of river blindness (onchocerciasis) and their larvae play a vital role in stream ecosystem. This study examined the distribution of black flies in the Oriental region and analyzed the phylogenetic relationship of the subgenus Gomphostilbia members based on two molecular loci. Methods: The distribution data of black fly species in different countries of Oriental region were obtained from world black flies geographic inventory. The two gene sequences, COI and ITS1 were used to study the phylogenetic relationships of the members of subgenus Gomphostilbia members. Results: The distribution analysis revealed that out of the 16 subgenera in the genus Simulium Latreille s., the species-level diversity of three subgenera (Gomphostilbia, Nevermannia and Simulium) contributes about thrice of total black fly species diversity. The highest diversity of species was found in the subgenus Simulium. The strict consensus of Tree analysis using New Technology (TNT) and Maximum Likelihood (ML) recovered similar topologies for Gomphostilbia members and they formed as monophyly. The overall sequence identities of the 19 species of subgenus Gomphostilbia were high and shared 55–60% similarity. Interpretation & conclusion: Results of this study highlighted that eight subgenera of Simulium Latreille s. str are commonly distributed in different parts of Oriental region. Among these the subgenera of Simulium, Gomphostilbia and Nevermannia are most common with high diversity in China, Pakistan, Thailand and Vietnam. The phylogenetic analysis of Gomphostilbia members demonstrates the inter-specific divergence, indicating the centre of origin (India) or the recipient of ancestral migrant lineages in Oriental region. © 2017, Malaria Research Center. All rights reserved.


Gargiulo J.D.,CONICET | Kumar R.S.,Tjs Engineering College | Chaparro M.A.E.,CONICET | Rajkumar P.,Sethupathy Government Arts College
Atmospheric Pollution Research | Year: 2016

Air pollution is a basic problem nowadays and it requires special concern. In India, the air pollution is a growing problem because of the enhanced anthropogenic activities such as burning fossil fuels involving industrial processes and motor vehicles. We study airborne dust particles collected at the height of 7 m in roadside and land area from thirty-eight cities in the state of Tamil Nadu. The collection involves a total of 111 samples concerning vehicular, industrial and residential areas, and allows us to assess the spatial distribution of magnetic particles produced and emitted on a short period of time (about one month). Magnetic properties of these air suspended particles were determined by techniques of environmental magnetism, revealing the presence of magnetite and hematite. We found the overall average of mass-specific magnetic susceptibility χ of 589.0 × 10−8 m3 kg−1 and saturation of remanent magnetization SIRM of 68.1 × 10−3 A m2 kg−1; as well as χ and SIRM values higher than 900.0 × 10−8 m3 kg−1 and 700.0 × 10−3 A m2 kg−1, respectively, corresponding to the most impacted zones in industrial/vehicular areas and in cities located in the central/eastern region respectively (e.g.: Hosur, Krishnagiri, Salem, Dharapuram, Ranipet, Ayanavaram, Cuddalore and Chidambaram). We analyzed the relationship between magnetic parameters, between areas and possible grouping of cities using multivariate statistical analysis. The SEM-EDS observations and grain size estimations reveal the presence of trace elements (Sb, Zn, Co, Ni, As and V) and fine particles (1–5 μm) that can be inhaled and therefore are dangerous to human health. © 2016 Turkish National Committee for Air Pollution Research and Control


Balamurali S.,Manonmaniam Sundaranar University | Balamurali S.,Sree Sevugan Annamalai College | Chandramohan R.,Sree Sevugan Annamalai College | Suriyamurthy N.,Radiological Safety Division Center | And 4 more authors.
Journal of Materials Science: Materials in Electronics | Year: 2013

Polycrystalline Mn doped ZnO (MZO) semiconductor thin films were deposited onto glass substrates employing different number of dipping at room temperature using Successive Ionic Layers by Adsorption Reaction (SILAR) technique. The thin film deposition conditions were optimized by altering the various deposition parameters based on their structure. The structural study was carried out using X-ray diffractometer (XRD). The XRD analysis indicated that there is no change in the structure of ZnO thin films due to Mn doping. The films exhibited hexagonal wurtzite structure. The structural studies on Mn doped samples revealed that the predominant orientation is (002) lattice plane and the position of this orientation shifted toward lower angle during doping. The intensity of photoluminescence (PL) emission of ZnO is found to be augmented for Mn doped samples. The room temperature Raman spectra measurements revealed the presence of additional modes. The Vibrating Sample Magnetometer (VSM) studies show that MZO thin film has ferromagnetic properties. © 2012 Springer Science+Business Media New York.


Balamurali S.,Manonmaniam Sundaranar University | Balamurali S.,Sree Sevugan Annamalai College | Chandramohan R.,Sree Sevugan Annamalai College | Karunakaran M.,Sree Sevugan Annamalai College | And 5 more authors.
Microscopy Research and Technique | Year: 2013

Transparent conducting Mn-doped ZnO thin films have been prepared by successive ionic layer by adsorption reaction (SILAR) method. The deposition conditions have been optimized based on their structure and on the formation of smoothness, adherence, and stoichiometry. The results of the studies by X-ray diffraction, scanning electron microscope (SEM), reveal the varieties of structural and morphological modifications feasible with SILAR method. The X-ray diffraction patterns confirm that the ZnO:Mn has wurtzite structure. The interesting morphological variations with dopant concentration are observed and discussed. The films' quality is comparable with those grown with physical methods and is suitable for spintronic applications. © 2013 Wiley Periodicals, Inc.


Jebas S.R.,Sethupathy Government Arts College | Fun H.-K.,King Saud University | Fun H.-K.,Universiti Sains Malaysia | Quah C.K.,Universiti Sains Malaysia | And 4 more authors.
Journal of Chemical Crystallography | Year: 2013

Butyrate derivatives of allyl 2-acetyl-3-(phenylamino)butanoate (1) and 1,3-dioxane derivatives of 2,6-dimethyl N-(4-methylphenyl)-1,3-dioxan-4-amine (2) and N-(3,5-diflourophenyl)-2,6-dimethyl-1,3-dioxan-4-amine (3) were synthesised. Their structures were characterized by FTIR (1) 1H NMR, 13C NMR spectroscopic techniques and single crystal X-ray diffraction. The compound (1) crystallizes in the triclinic crystal system with the space group p-1 with a = 10.0874(5) Å, b = 10.1751(5) Å, c = 14.1930(8) Å, α = 82.429(4), β = 77.482(4), γ = 80.820(4), v = 1396.77(13) Å3. The compound (2) crystallizes in the monoclinic space group P21/C with unit cell dimensions a = 9.8454(3) Å, b = 13.3032(4) Å, c = 10.1967(3) Å, α = 90, β = 114.821(2), γ = 90, v = 1212.15(6) Å3. The compound (3) crystallizes in the triclinic space group p-1 with unit cell dimensions a = 9.65630(10) Å, b = 11.2266(2) Å, c = 11.2658(2) Å, α = 83.7710(10), β = 79.1770(10), γ = 77.1290(10), v = 1166.59(3) Å3. Graphical Abstract: In the crystal packing of all the three crystal structures, the molecules are linked together by hydrogen bonds to form dimers. [Figure not available: see fulltext.] © 2013 Springer Science+Business Media New York.


Rajendran S.,Alagappa University | Bama V.S.,Sethupathy Government Arts College
Journal of Non-Crystalline Solids | Year: 2010

Plasticized polymer electrolyte films containing poly (vinyl acetate) (PVAc)/poly(methyl methacrylate) (PMMA)-LiClO 4 with different plasticizers are prepared by solvent casting technique. Complexation of the prepared electrolytes is confirmed by X-ray diffraction analysis and Fourier Transform Infra red analysis. Ionic conductivities of the electrolytes are determined by AC impedance studies in the temperature range of 303-343 K. The temperature dependent ionic conductivity plot seems to obey Vogel-Tamman-Fulcher relation. The ionic transport in the polymer electrolytes has been discussed on the basis of free volume theory. Thermal stability and the surface morphology of the polymer electrolytes are examined by using thermogravimetric/differential thermal analysis and scanning electron microscope respectively. The highest ionic conductivity 5.064 × 10 -4 Scm -1 have been observed for ethylene carbonate based complex because of the higher dielectric constant (89.6 at 40 °C) among the other plasticizers. © 2010 Elsevier B.V. All rights reserved.


Ananthakumar K.,Sethupathy Government Arts College | Krishnammal A.,Madurai Kamaraj University
Indian Journal of Environmental Protection | Year: 2011

The present study deals with the removal of brilliant green (BG) on commercial activated charcoal (CAC). The effect of initial concentration of dye, contact time, dose of adsorbent, temperature and surfactant on the removal of brilliant green by adsorption on CAC has been studied. The percentage removal of dye on adsorbent was found to increase with increase in initial concentration of dye. The percentage removal of dye was found to increase and reaches a maximum value with increase in contact time. The percentage removal of dye by adsorption exponentially increases with increase in dose of adsorbent. This was due to the availability of active sites. The percentage removal of dye was found to decreases with increase in temperature. From this data the thermodynamic parameters, such as ΔH°, ΔG° and ΔS° were calculated. The percentage removal of dye was found to decrease with increase in surfactant. Langmuir and Freundlich models were tested. The system covered monolayer adsorption. © 2011 - Kalpana Corporation.


Ananthakumar K.,Sethupathy Government Arts College | Muthuvinayaga Keerthiha S.,P.A. College
Indian Journal of Environmental Protection | Year: 2010

The present work deals with the adsorption of propanoic acid by batch adsorption technique on commercial activated charcoal (CAC). The temperature is maintained at 32.5 ± 0.5 °C and mechanical shaker is operated at 130 ± 5 rpm .The effect of the initial concentration of acid indicated that the percentage adsorption of the propanoic acid is low at higher concentration .The percentage adsorption exponentially decreases with the increase In initial concentration of propanoic acid. The effect of pH showed that the percentage adsorption is low at basic medium. The adsorption of acid on adsorbent is found to be highly pH dependent .The pH of the medium increases the. extent of adsorption decreases. The percentage adsorption increases with increase in the dose rate of the CAC. This may be due to the rapid increase in the surface area and the number of active sites available for accommodating the propanoic acid. The effect of the contact time indicated that the rate of adsorption of propanoic acid is higher at 60 min. It was observed that the percentage adsorption is decreases with increase in temperature. The thermodynamic parameters, such as energy of activation (E a), standard free energy change (ΔG °), standard entropy change (ΔS °\) and standard enthalpy change (ΔH °) for the adsorption of propanoic acid were calculated. The data obtained in the adsorption studies are modelled with classical Freundlich isotherm. ©2010 - Kalpana Corporation.

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