Meenakshi University

Chennai, India

Meenakshi University

Chennai, India
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Brindha E.,Anna University | Rajasekaran R.,Anna University | Aruna P.,Anna University | Koteeswaran D.,Meenakshi University | Ganesan S.,Anna University
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2017

Urine has emerged as one of the diagnostically potential bio fluids, as it has many metabolites. As the concentration and the physiochemical properties of the urinary metabolites may vary under pathological transformation, Raman spectroscopic characterization of urine has been exploited as a significant tool in identifying several diseased conditions, including cancers. In the present study, an attempt was made to study the high wavenumber (HWVN) Raman spectroscopic characterization of urine samples of normal subjects, oral premalignant and malignant patients. It is concluded that the urinary metabolites flavoproteins, tryptophan and phenylalanine are responsible for the observed spectral variations between the normal and abnormal groups. Principal component analysis-based linear discriminant analysis was carried out to verify the diagnostic potentiality of the present technique. The discriminant analysis performed across normal and oral premalignant subjects classifies 95.6% of the original and 94.9% of the cross-validated grouped cases correctly. In the second analysis performed across normal and oral malignant groups, the accuracy of the original and cross-validated grouped cases was 96.4% and 92.1% respectively. Similarly, the third analysis performed across three groups, normal, oral premalignant and malignant groups, classifies 93.3% and 91.2% of the original and cross-validated grouped cases correctly. © 2016

Endodontic management of teeth with aberrant root canal morphology can be challenging. This article presents a case in which multiple angulated radiographs and a dental operating microscope clearly revealed the presence of 3 root canals in a right mandibular central incisor with 2 different canal patterns. This case report emphasizes the importance of utilizing a dental operating microscope to understand unusual root canal morphology.

Ranjith D.,Meenakshi University | Balajee J.,Vellore Institute of Technology | Kumar C.,Shanmuga Industries Arts & Science College
International Journal of Pharmacy and Technology | Year: 2016

Cloud computing that has become a relevant and virtualization technology that uses the internet and central remote servers to offer the sharing of resources that include software,frameworks,applications and business processes to the market environment to succeed the extensible demand. 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. This paper exhibits a survey of the current state of Cloud Computing. It involves in discussion of the evolution process of cloud computing,features of Cloud,current technologies adopted in cloud computing. This paper also exhibits a comparative study of cloud computing platforms (Amazon,Google and Microsoft and Cloudsim) and it stimulates the demands. © 2016,International Journal of Pharmacy and Technology. All rights reserved.

Spoorthy E.,Meenakshi University | Velmurugan N.,Meenakshi University | Ballal S.,Meenakshi University | Nandini S.,Meenakshi University
International Endodontic Journal | Year: 2013

Aim: To evaluate the effect of an apical negative pressure system, a passive ultrasonic irrigation system and a combination of both apical negative pressure and passive ultrasonic irrigation on the penetration of the irrigating contrast solution (ICS) up to working length and into simulated lateral canals. Methodology: The root canals of 64 single-rooted teeth were instrumented using the ProTaper rotary system. In each sample, three simulated lateral canals were created at 2, 4 and 6 mm levels from the root apex using a 06-size C+ file (Dentsply Maillefer, Ballaigues, Switzerland). Samples were randomly assigned into 4 experimental groups (n = 16): group I - conventional needle irrigation, group II - passive ultrasonic irrigation, group III - apical negative irrigation system and group IV - combination of passive ultrasonic irrigation and apical negative pressure irrigation system. To examine irrigating solution penetration, Indian ink was mixed with 5.25% NaOCl and delivered into the root canals. Samples were then assessed by direct observation of the images taken using Canon EOS rebel T3. The depth of penetration of ICS up to the working length and into the simulated lateral canals was analysed using chi-squared tests. Results: The combination (ANP and PUI) and ANP group had significantly deeper ICS penetration up to the working length (P < 0.001). The combination (ANP and PUI) and the PUI group exhibited significantly greater ICS penetration into lateral canals at the 6 mm level (P < 0.001). At the 4 and 2 mm levels, the combination of ANP and PUI had significantly greater ICS penetration into the lateral canals than the other groups (P < 0.001). Conclusions: The combination of ANP and PUI was the only group able to achieve irrigating contrast solution penetration both up to the working length and into lateral canals. © 2013 International Endodontic Journal.

Rajendiran T.V.,Pachaiyappas College | Rajendiran T.V.,Meenakshi University | Anbuselvan C.,Pachaiyappas College
Asian Journal of Chemistry | Year: 2010

Three new azoaromatic polyimides were synthesized by condensing 3,3′,4,4′-azobenzene tetra carboxylic dianhydride and 4,4′-diaminodiphenyl/ 4,4′-diaminoazobenzene/2,2-bis(4-p- aminophenoxy) phenyl]- propane. These polyimides were drawn into fibres with different experimental conditions. Their physical, mechanical and morphological properties were studied. The structure of polyimides were also confirmed by pyrolysis-GC-mass spectra.

Girija Smiline A.S.,Meenakshi University | Vijayshree Priyadharshini J.,Meenakshi University | Pandi Suba K.,Meenakshi University | Hariprasad P.,Meenakshi University | Raguraman R.,Meenakshi University
Indian Journal of Marine Sciences | Year: 2012

Present study consist a novel therapeutics from natural sources to prevent the emergence and proliferation of resistant microbial populations that can make a significant impact in treating clinically challenging microbial infections. Squid ink has proved to play various primary roles in the world of alternative medicine and has widest range of therapeutic applications. Present study is designed to report the antibacterial effect of the squid ink against the ESBL producing strains of E.coli and K.pneumoniae. ESBL strains are isolated from patients with typical urinary tract infections. They have been identified microbiologically and characterized by double disc synergy test and plasmid profiles. Active metabolite of squid ink was extracted using solvents and was checked for its antibacterial activity by agar well diffusion method. MIC value is determined by microbroth dilution method. Results conclude that the hexane extract of the squid ink scored high antibacterial activity against the ESBL producing strains of E.coli and K.pneumoniae. Present study suggests that squid ink is an enigmatic pigment of therapeutic value in near future for treatment of dreadful infections caused by the ESBL strains.

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.

Ashwinkumar V.,Meenakshi University | Krithikadatta J.,Meenakshi University | Surendran S.,Meenakshi University | Velmurugan N.,Meenakshi University
International Endodontic Journal | Year: 2014

Aim: To compare dentinal microcrack formation whilst using Ni-Ti hand K-files, ProTaper hand and rotary files and the WaveOne reciprocating file. Methodology: One hundred and fifty mandibular first molars were selected. Thirty teeth were left unprepared and served as controls, and the remaining 120 teeth were divided into four groups. Ni-Ti hand K-files, ProTaper hand files, ProTaper rotary files and WaveOne Primary reciprocating files were used to prepare the mesial canals. Roots were then sectioned 3, 6 and 9 mm from the apex, and the cut surface was observed under scanning electron microscope (SEM) and checked for the presence of dentinal microcracks. Results: The control and Ni-Ti hand K-files groups were not associated with microcracks. In roots prepared with ProTaper hand files, ProTaper rotary files and WaveOne Primary reciprocating files, dentinal microcracks were present. There was a significant difference between control/Ni-Ti hand K-files group and ProTaper hand files/ProTaper rotary files/WaveOne Primary reciprocating file group (P < 0.001) with ProTaper rotary files producing the most microcracks. No significant difference was observed between teeth prepared with ProTaper hand files and WaveOne Primary reciprocating files. Conclusion: ProTaper rotary files were associated with significantly more microcracks than ProTaper hand files and WaveOne Primary reciprocating files. Ni-Ti hand K-files did not produce microcracks at any levels inside the root canals. © 2013 International Endodontic Journal.

PubMed | Meenakshi University and SBV University
Type: Journal Article | Journal: Progress in orthodontics | Year: 2016

In this finite element (FE) study, the stress distribution and displacement pattern was evaluated in the mid-palatal area and around circum-maxillary sutures exerted by bone-borne palatal expander (BBPE) in comparison with conventional HYRAX rapid palatal expander in unilateral cleft lip and palate.Computed tomography scan images of a patient with unilateral cleft palate was used to create a FE model of the maxillary bone along with circum-maxillary sutures. A three-dimensional model of the conventional HYRAX (Hygienic Rapid Expander) expander and custom-made BBPE was created by laser scanning and programmed into the FE model.With the BBPE, the maximum stress was observed at the implant insertion site, whereas with the conventional HYRAX expander, it was at the dentition level. Among the circum-maxillary sutures, the zygomaticomaxillary suture experienced maximum stress followed by the zygomaticotemporal and nasomaxillary sutures. Displacement in the X-axis (transverse) was highest on the cleft side, and in the Y-axis (antero-posterior), it was highest in the posterior region in the BBPE.The total displacement was observed maximum in the mid-palatal cleft area in the BBPE, and it produced true skeletal expansion at the alveolar level without any dental tipping when compared with the conventional HYRAX expander.

Rajendiran T.V.,Pachaiyappas College | Rajendiran T.V.,Meenakshi University | Lakshmi L.,Pachaiyappas College
Asian Journal of Chemistry | Year: 2010

Ten new aromatic-aliphatic polyimides containing azo linkage in the main chain, based on 3,3,'4,4'-azobenzene tetra carboxylic dianhydride and different aliphatic long chain diamines, were synthesized.The polymers were characterized by viscosity, solubility, spectroscopy, TGA and DTA.

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