Auxilium College Autonomous

Vellore, India

Auxilium College Autonomous

Vellore, India
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Mathivanan D.,Vellore Institute of Technology | Gandhi P.R.,Auxilium College Autonomous | Mary R.R.,Auxilium College Autonomous | Suseem S.R.,Vellore Institute of Technology
Physiological and Molecular Plant Pathology | Year: 2017

Insecticide barrier and insufficient awareness to the execution of topical larvicidal and acaricidal are general reason for treatment defeat. Medicinal plants are safe alternatives due to their less toxicity and uncomplicated biodegradability to the organisms. In the present study different solvent extracts of Andrographis echioides were evaluated for larvicidal and acaricidal activity against fourth instar larvae of Aedes aegypti L, Culex quinquefasciatus (say) (Diptera: Culicidae) and Rhipicephalus (Boophilus) microplus canestrini (Acari: Ixodidae). The larvicidal and acaricidal mortality were observed after 24 h exposure of extracts like petroleum ether, ethyl acetate, methanol and aqueous extract. Among that, methanolic extract shows maximum activity against A. aegypti, C. quinquefasciatus, and R. microplus, (LC50 = 93.00, 83.06 and 105.84 ppm; LC90 = 171.81, 171.76 and 198.73 ppm; χ2 = 11.038, 1.075 and 7.867) respectively. GC-MS analysis revealed the presence of Oxirane Tridecyl- (34.89% area) for petroleum ether extract, Z,E-2-Methyl-3,13-Octadecadien-1-OL (29.08% area) for ethyl acetate extract, Silane Dimethyl- (59.89% area) for methanolic extract of A. echioides in major amount. These compounds could be responsible for larvicidal and the acaricidal activity of A. echioides. We reports here for the first time on this ideal, eco-friendly and cost effective approach against larvicidal and acaricidal activity from A. echioides leaf extracts. © 2017.

Gandhi P.R.,Auxilium College Autonomous | Jayaseelan C.,Auxilium College Autonomous | Jayaseelan C.,Sathyabama University | Mary R.R.,Auxilium College Autonomous | And 2 more authors.
Experimental Parasitology | Year: 2017

The aim of the present study was to evaluate the acaricidal, pediculicidal and larvicidal effect of synthesized zinc oxide nanoparticles (ZnO NPs) using Momordica charantia leaf extract against the larvae of Rhipicephalus (Boophilus) microplus, adult of Pediculus humanus capitis, and the larvae of Anopheles stephensi, Culex quinquefasciatus. The ZnO NPs were characterized by using UV, XRD, FTIR and SEM-EDX. The SEM image confirms that the synthesized nanoparticles were spherical in shape with a size of 21.32 nm. The results of GC-MS analysis indicates the presence of the major compound of Nonacosane (C29H60) in the M. charantia leaf extract. Cattle tick, head lice and mosquito larvae were exposed to a varying concentrations of the synthesized ZnO NPs and M. charantia leaf extract for 24 h. Compared to the leaf aqueous extract, biosynthesized ZnO NPs showed higher toxicity against R. microplus, P. humanus capitis, An. stephensi, and Cx. Quinquefasciatus with the LC50 values of 6.87, 14.38, 5.42, and 4.87 mg/L, respectively. The findings revealed that synthesized ZnO NPs possess excellent anti-parasitic activity. These results suggest that the green synthesized ZnO NPs has the potential to be used as an ideal ecofriendly approach for the control of R. microplus, P. humanus capitis and the mosquito larvae of An. Stephensi and Cx. quinquefasciatus. © 2017 Elsevier Inc.

PubMed | Sathyabama University and Auxilium College Autonomous
Type: Journal Article | Journal: Environmental science and pollution research international | Year: 2016

Green synthesis of silver nanoparticles (AgNPs) using Hybanthus enneaspermus extract at room temperature that act as a reducing agent as well as capping agent has been investigated. The synthesized AgNPs were characterized by UV-visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared (FTIR), zeta potential, and dynamic light scattering (DLS) transmission electron microscopy (TEM) and energy-dispersive X-ray (EDX). The silver surface plasmon resonance was observed at 420 nm in the UV-visible spectrum. XRD peaks were observed at 2 values in 38.20, 44.40, 64.60, and 77.50 which are indexed as (111), (200), (220), and (311) bands of face-centered cubic (fcc) structures of silver. FTIR revealed the AgNPs were capped with plant compounds of alcohol, phenols, carbonyl, amines, and amide functional groups. TEM image shows that the particles were of spherical, hexagonal, and triangular in shape, and the size range was 16-26 nm. Further, DLS exhibits the average size of 25.2 nm and the zeta values were measured (-27.1 mV) which proves the stability of the AgNPs. The conversion of Ag(+) ions into Ag(0) was calculated using inductively coupled plasma atomic emission spectroscopy (ICP-MS) and was found to be 96 %. The biosynthesized AgNPs showed the larvicidal activity with the LC50 values of 17.24 and 13.12 mg/L against the fourth-instar larvae of Anopheles subpictus and Culex quinquefasciatus, respectively. The GC-MS analysis of the plant extract showed that 39 bioactive phytochemical compounds have been found to possess a wide range of activities, which may help in the protection against incurable diseases.

Ranjith D.,Meenakshi University | Ramya J.,Auxilium College Autonomous
International Journal of Applied Engineering Research | Year: 2014

Cloud computing is a scattered computing prototype which permits a third party to offer accomplished computer possessions in an on-bidding manner for people to track their own services. The supplier manages this by dynamic huge data centers of service computers, obligatory the economies of calibration to accusation its users for each unit usage time. So, in an approach, it is computer dealings. In Cloud Computing now a day's having more cloud applications. In the standard environment, the service vitality, elasticity, choices and flexibility suggest by this scalable technology are too attractive that makes the cloud computing to increasingly becoming a necessary part of the enterprise computing environment. Cloud computing facilities allow users to lease computing possessions from huge scale data centers operated by cloud service suppliers. Applying the cloud services, users can use a varied variety of applications enthusiastically and on-demand. In this paper explains about the features and survey of Dropbox and Google Drive in the real world. © Research India Publications.

Sebastian E.,Auxilium College Autonomous | Victor P.,Auxilium College Autonomous
International Journal of Applied Engineering Research | Year: 2015

In this paper, we construct a discrete-time predator-prey model. Our predator- prey model includes carrying capacity for both the predator and prey populations. This would represent some limitation on the predator and prey populations. The carrying capacity is the size of the population that can be supported indefinitely upon the available resources. We compare the stability of the discrete-time predator–prey system with and without Allee effect. And then we exhibit the impact of the Allee effect on the stability when it is imposed on the prey population. © Research India Publications.

Elizabeth S.,Auxilium College Autonomous | Sujatha L.,Auxilium College Autonomous
Advances in Fuzzy Systems | Year: 2012

In problems of graphs involving uncertainties, the fuzzy shortest path problem is one of the most studied topics, since it has a wide range of applications in different areas and therefore deserves special attention. In this paper, algorithms are proposed for the fuzzy shortest path problem, where the arc length of the network takes imprecise numbers, instead of real numbers, namely, level λ-triangular LR fuzzy numbers. Few indices defined in this paper help to identify the shortest path in fuzzy environment. ©2012 S. Elizabeth and L. Sujatha.

Gandhi P.R.,Auxilium College Autonomous | Jayaseelan C.,Auxilium College Autonomous | Vimalkumar E.,Auxilium College Autonomous | Mary R.R.,Auxilium College Autonomous
Journal of Asia-Pacific Entomology | Year: 2016

Insecticide resistance and inadequate attention to the application instructions of topical pediculicides are common reasons for treatment failure. Essential oils or plant extracts are good and safe alternatives due to their low toxicity to mammals and easy biodegradability. The present study was carried out to establish the larvicidal and the pediculicidal activity of synthesized titanium dioxide nanoparticles (TiO2 NPs) using the leaf aqueous extract of Vitex negundo (Verbenaceae) against the fourth instar larvae of the malaria vector, Anopheles subpictus Grassi and filariasis vector, Culex quinquefasciatus Say (Diptera: Culicidae) and the head louse, Pediculus humanus capitis De Geer (Phthiraptera: Pediculidae). The synthesized TiO2 NPs were characterized by UV, XRD, FTIR and SEM-EDX. The SEM analyses were clearly indicated that the spherical shape of the synthesized TiO2 NPs. Mosquito larvae and head lice were exposed to varying concentrations of the synthesized TiO2 NPs, V. negundo leaf aqueous extract and titanium tetrachloride (TiCl4) for 24 h. The maximum activity was observed in the synthesized TiO2 NPs against A. subpictus, C. quinquefasciatus and lice, (LC50 = 7.52, 7.23 and 24.32 mg/L; χ2 = 0.161, 2.678 and 4.495; r2 = 0.663, 0.742 and 0.924), respectively. The TiO2 NPs did not exhibit any noticeable toxicity on Poecilia reticulata after 24 h of exposure. The findings revealed that the synthesized TiO2 NPs possess excellent mosquito larvicidal and anti-lice activity. These results suggest that the green synthesis of TiO2 NPs has the potential to be used as an ideal eco-friendly approach for the control of vectors and head lice. © 2016

Elizabeth S.,Auxilium College Autonomous | Jothilakshmi R.,Auxilium College Autonomous
Applied Mechanics and Materials | Year: 2014

This paper deals with quantification of the noise located in the digital signal by an innovative process. This process is associated with the filter that represents the novel information conveyed by the desired signal, residual interference and residual noise which are used to reduce the noise. A typical uniform quantization operation of a sampled signal is identified and interpreted with the framework of stochastic difference equation. A new theorem is proposed with all possible assumptions to support our result to signal noise ratio. © (2014) Trans Tech Publications, Switzerland.

Sebastian E.,Auxilium College Autonomous | Victor P.,Auxilium College Autonomous
Advances in Intelligent Systems and Computing | Year: 2016

In this paper, we propose a discrete-time eco-epidemiological model with disease in prey incorporating Holling type III functional response and harvesting of prey. Bilinear incidence rate is used to model the contact process. We incorporate harvesting of both the susceptible and infected prey populations. We consider that the predator population will prefer only the infected prey population as the infected ones are more vulnerable. We derive the basic reproduction number of the eco-epidemiological model. We find the equilibrium points of the model and analyse the conditions for their stability. Finally, we carry out simulations to illustrate our analytical findings. © Springer Science+Business Media Singapore 2016.

Sumathi P.,Auxilium College Autonomous | Isabella Rosaline S.,Auxilium College Autonomous
International Journal of Pharma and Bio Sciences | Year: 2013

The traditional medicine involves the use of different plant extracts or the bioactive constituents. For this study, nine medicinal plants such as Andrographis paniculata, Bixa orellana, Catharanthus roseus, Curcuma longa, Ocimum sanctum, Phyllanthus niruri, Terminalis bellerica, Terminalua chebula and Tinospora cordifolia, were subjected to phytochemical analysis employing standard methods. The study confirms the presence of various phytochemicals like Alkaloids, Flavonoids, Saponins, Glycosides, Phenols, Proteins, Steroids, Terpenoids and Tannins. The results obtained in the present study suggest that these plants could be used for curing various ailments and possess potential antioxidant properties and can be used for the isolation of new and novel bioactive compounds.

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