Informatics Publishing Limited

K. G. Subramanian ¹, S. Raja ¹, B. S. Panigrahi ¹

Affiliations
1 Reactor Operations & Maintenance Group, Indira Gandhi Centre for Atomic Research, Kalpakkam-603102 (TN), IN

Abstract

Surfactants are used in cooling water systems to keep the precipitating chemicals in dispersed condition and thus to deter the scale formation. The choice of using cationic or anionic surfactant as dispersants depends on the chemical nature of the raw water. At the same time, estimation of surfactants at trace level has always been a challenge. In the present study, Cetyl trimethyl ammonium bromide (CTAB), a cationic surfactant, is estimated at ppm level using high pressure ion chromatography in water medium. The CTAB is estimated here in raw water, domestic waste water and cooling water.

Keywords

Surfactants, Dispersants, CTAB, High Pressure Ion Chromatography

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S. Raja ¹, P. Ramkumar ², P. Viji

Affiliations
1 VIT University Chennai Campus, Chennai-48, IN
2 AMET University, Chennai – 603112, IN

Abstract

This study has been carried out to analyze the research field of Gender in thyroid cancer in terms of publication output as per science citation index (1991- Mar 2010). During 1991- Mar 2010 a total of 380 papers were published by the scientists in the field of Gender in thyroid cancer. The average number of published per year 10.78%.The highest number of papers 41 were published in 2006 and 2007. There were 50 countries involved in the research in this field. USA is top producing country with 140 publications (36.84%) followed by Italy with 44 publications (11.57%),Japan with 32 publications (8.42%), Germany with 31 publications (8.15%), Sweden with 19 publications (5.00%). The most productive author is Clark OH with 11 papers dealing with thyroid cancer and 2.89% of all papers published in this research field. The most preferred journals by Thyroid topped the list with 30 (7.89%) followed by Journal of Clinical Endocrinology&Metabolism with 27 (7.10%) publications, Cancer with 22 (5.78%) publications, World Journal of Surgery with 18(4.73%) publications, Surgery with 13 publications (3.42%). NCI is top producing Institution with 15 (3.94%) publication followed by Karolinska Institute, University of California San Francisco, University of Pisa each 13 publications. Thyroid topped the list with 273 publication followed by Cancer with 131 publications, Carcinoma with 112 publications.

Keywords

Thyroid, Cancer, Carcinoma, Patients. Scientometric Analysis, Scientometric Study

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S. Raja ¹, Ram Kumar ², N. Amsaveni ³

Affiliations
1 Asst. Librarian, A.U.C.B. Public Library, Alagappa University, Karaikudi, Tamilnadu, IN
2 AMET University, Chennai-603 112, Tamil Nadu, IN
3 DLIS, BDU, Trichy, IN

Abstract

This study has been carried out to analyze the research field of Scientometrics, technometric, bibliometrics, informetric, webometrics in terms of publication output as per Science Citation Index (1978-2012) from Web of Science. During 1999- 2011 a total of 2325 papers were published by the scientists in the field of scientometrics. The average number of published per year 13 %.The highest number of papers 413 were published in 2011. There were 49 countries involved in the research in this field. USA is the top producing country with 377 publications. The most productive author is Glanzel W with 53 papers dealing with Scientometrics. The most productive Journal is Scientometrics with 560 papers dealing with Scientometrics.

Keywords

Scientometrics, Technometric, Bibliometrics, Informetric, Webometrics

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Shesdev Patro ¹, P. Krishnan ¹, M. Gopi ¹, S. Raja ¹, C. R. Sreeraj ¹, Purvaja Ramachandran ¹, R. Ramesh ¹

Affiliations
1 National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Koodal Building, Anna University Campus, Chennai 600 025, IN

Abstract

No Abstract.

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S. Raja ¹, Josephine Reena ¹

Affiliations
1 Department of EEE, Veltech Dr. R.R & Dr. SR Technical University, Avadi, Chennai, Tamilnadu-600062, IN

Abstract

This paper proposes a Design of an Embedded Charge Control Unit (ECCU) for a PV-solar/Wind Hybrid energy system, to provide the intermittent power supply for the telephone Base Transceiver Station (BTS) in rural areas. And also, an analytical study for modelling an optimized hybrid energy system configuration. Hybrid energy system comprises of photovoltaic solar array, wind turbine generator (WTG), diesel generator and the battery back up, are connected to centralized DC bus with the conventional power supply. To enhance the effective operation of the Hybrid power system, several operating modes have been employed in the ECCU. Analytical studies to optimize the system configuration and to identify the feasibility of the selected project location are simulated using the software called as HOMER.

Keywords

PV-Solar, WTG, Battery, ECCU, Hybrid Energy System, BTS, HOMER.

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C. R. Prakash ¹, S. Raja ², G. Saravanan ³, P. Dinesh Kumar ⁴, T. Panneer Selvam ⁵

Affiliations
1 Department of Pharmaceutical Chemistry, DCRM Pharmacy College, Inkollu. Andhra Pradesh, IN
2 Department of Pharmaceutical Chemistry, DCRM Pharmacy College, Inkollu, Andhra Pradesh, IN
3 Medicinal Chemistry Research Laboratory, Bapatla College of Pharmacy, Bapatla-522 101, (A.P), IN
4 Dep. of Pharmaceutics, Rahul Institute of Pharmaceutical Science and Research, Chirala-523157, (A.P.), IN
5 Department Pharmaceutical Chemistry, Srinivas College of Pharmacy, Mangalore-574142, Karnataka, IN

Abstract

In the present study, a series of novel Schiff bases of isatin were synthesized by condensation of imesatin with different aromatic aldehydes. The imesatins were synthesized by reaction of isatin with p-phenylenediamine. The chemical structures of the synthesized compounds were confirmed by means of IR, 1H-NMR, mass spectroscopy, and elemental analysis. These compounds were screened for antioxidant activity by DPPH radical scavenging activity. In this method, the compound 3-(4-(4-dimethylaminobenzylideneamino) phenylimino) indoline-2-one (5c) showed highest antioxidant activity because of the presence of electron donating group.

Keywords

Antioxidant, Isatin, Schiff Base.

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R. Venkatamahesh ¹, N. Amith ¹, K. Sireesha ¹, M. Balaji ¹, S. Raja ¹

Affiliations
1 Department of Pharmaceutical Analysis, Bharathi College of Pharmacy, Bharathi Nagara, Mandya (District), Karnataka - 571 422, IN

Abstract

The Simple, precise and economical UV method have been developed and validated for the quantitative for the estimation of Eletriptan hydrobromide in bulk and pharmaceutical dosage forms. Eletriptan hydrobromide is dissolve in the water and It shows absorbance maxima at 219 nm, Beer's law was found to be obeyed in the concentration range of 5-25 μg/mL. The developed method was validated according to ICH guidelines and was found to be accurate and precise. The proposed method can be successfully applied for the estimation of Eletriptan hydrobromide in bulk and pharmaceutical dosage forms. Results of the analysis were validated statistically and by recovery studies.

Keywords

Eletriptan Hydrobromide, UV Spectrophotometry, Zero Order Spectroscopy.

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R. Mohan ¹, S. Raja ¹, G. Saraswathy ¹, S. Mathivanan ¹, B. N. Das ¹

Affiliations
1 Footwear Testing Laboratory, SDDC, CSIR-Central Leather Research Institute, Chennai, IN

Abstract

Rubber and thermoplastic rubber occupies a considerable extent as bottom sole material in shoes. A surface treatment called "halogenation" is offered on these types of soles to improve adhesion strength between upper and outsole. This is a treatment on Thermo plastic Styrenebutadiene- styrene rubber shoe sole (S1) with a 0.5 % wt. solution of trichloroisocyanuric acid (TCI) in methyl ethyl ketone (MEK) to introduce chlorinated and oxidized moieties on the rubber surface which modifies the surface of the sole for better adhesion with polyurethane adhesive. This mechanism of surface modification is made use of to improve slip resistance property of the soling material. In this study slip resistance in terms of co-efficient of friction (COF) of untreated and treated soles were measured by a slip resistance tester ( Model : SATRA STM 603). The results showed that chlorination treatment made on thermo plastic styrene-butadiene-styrene rubber sole with 0.5 % wt TCI produces a noticeable increase in co-efficient of friction values due to increase its surface energy, polarity and surface roughness on the rubber surface.

Keywords

Rubber, Surface Treatment, Co-efficient of Friction (COF), Slip Resistance, Surface Roughness.

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S. Venkatesh ¹, S. Prakash ¹, S. Raja ¹, S. Manigandan ¹, P. Sivashankari ¹

Affiliations
1 School of Mech. Engg., Sathyabama Inst. of Sci. and Tech., Chennai, IN

Abstract

The effects of the delamination in the critical buckling load failure of E-Glass /epoxy composite laminates are analysed. The buckling load of rectangular composite plates is determined by carrying out the experimental work for different aspect ratios of range 2 to 3. The specimens are made with unidirectional fibres of orientation (90°/45°/-45°/0°)s. The width of long 100 mm and 50 mm at the centre of the plate, a single substantial delamination is made at the mid layer produced by Teflon film using hand lay-up technique. The buckling loads of plates were found by using simply supported boundary condition and kept the other side edges free. The experimental buckling loads were found from the graph drawn for vertical displacement vs load. By drawing the graph for the vertical displacement vs. load, the experimental buckling load can be calculated. Using finite element software of ANSYS 10, the experimental results were validated.

Keywords

Epoxy Composites, Glass Fibre, Buckling, Reinforcement, Delamination, Mechanical Properties.

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Basavaraj Noolvi ¹, Shanmukha Nagaraj ², S. Raja ³

Affiliations
1 Dept. of Mech., Engg., Amrita School of Engg., Bengaluru, Amrita Vishwa Vidyapeetham, IN
2 Dept. of Mech., Engg., R V College of Engg., Bengaluru, IN
3 National Aerospace Laboratories, Bengaluru, IN

Abstract

The presented research involves two types of Smart adaptive composite beams (SAC). The study was conducted on smart composite beams composed of LY5210 and EPOLAM 2063 resin systems respectively. The fabrication of composite beams involved embedding SMA wires in between layers of 0/90 woven glass fibre in the respective resin systems, followed by suitable curing and post curing cycles. Suitable mould was designed and manufactured to facilitate the required pre-straining of SMA wires. Both static and dynamic tests were done on the SAC specimens to study the behaviour of these SACs. Static and free vibration analyses were carried out using MSC Nastran and Hypermesh. There has been good agreement between the results of finite element analysis and the experimental results.

Keywords

Smart Composites, Free Vibration, Modal Analysis, Natural Frequencies, Shape Memory Alloys.

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Manju P. U. ¹, S. Raja ²

Affiliations
1 Research Scholar, Alagappa University, Tamil Nadu, IN
2 Assistant Librarian, Alagappa University, Tamil Nadu, IN

Abstract

The present study discusses the use of R programming software for the bibliometric analysis of E-waste management publications in India. The period of the study is 1992 to 2018 January. By the help of this software the Author, Organization, document & Country-wise distribution of literature Citation Pattern and Author collaboration on E-waste management in India are analyzed. R- programming software is used to create graphs and maps for the schematic representation of the data.

Keywords

E-Waste Management, Scientometrics, R-Programming, Author Productivity.

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C. Rajarajan ¹, P. Sivaraj ², Tushar Sonar ³, S. Raja ⁴, N. Mathiazhagan ¹

Affiliations
1 Meenakshi Ramaswamy Engineering College, Thathanur, Tamil Nadu, IN
2 Annamalai University, Annamalai Nagar, Tamil Nadu, IN
3 G. S. Mandal's Maharashtra Institute of Technology, Aurangabad, Maharashtra, IN
4 Alagappa University, Karaikudi, Tamil Nadu, IN

Abstract

The joining of advanced high strength steel (AHSS) of type dual phase 800 (DP800) by fusion welding is challenging owing to its high strength and complex microstructural features. It leads to softening of heat affected zone (HAZ) and cracking due to the high heat input associated with fusion welding processes. This significantly deteriorates the tensile shear fracture properties of DP800 steel joints. To overcome this problem, resistance spot welding (RSW) is employed to join DP800 steel thin sheets. It involves resistive heating of joining surfaces under pressure at a temperature less than melting point of parent metal. This significantly reduces the issues in joining DP800 steel such as softening in HAZ, solidification and HAZ cracking and offers precise spot weld. The tensile shear fracture properties of joints are influenced by RSW parameters such as welding current, welding time, and electrode force. Hence, establishing empirical relationships to predict the tensile shear fracture properties of joints is crucial. So, the main objective of this investigation is to establish empirical relationships to predict the tensile shear fracture properties of resistance spot welded dual phase 800 steel lap joints using regression analysis. The optimal process window of RSW is established using response surface methodology (RSM) to attain superior tensile shear fracture properties of DP800 steel joints.

Keywords

Resistance Spot Welding, Advanced High Strength Steel, Tensile Shear Fracture Load, Microstructure, Nugget Hardness.

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