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Ilocos, Philippines

The Union Christian College, Aluva is one of the prominent educational institutions in Kerala, India. It is situated to the north of Aluva in Ernakulam District.Founded in 1921 as a centre of Christian Higher Education, UC College is an inter-denominational cooperation venture among four major Kerala Christian denominations, Church of South India, Malankara Orthodox Syrian Church, Mar Thoma Syrian Church, and Malankara Jacobite Syrian Church.The college was affiliated to The Travancore University and is now affiliated to Mahatma Gandhi University, Kottayam. Wikipedia.

Maniyan P.,Union Christian College | Shivakumar B.L.,Sri Ramakrishna Engineering College
International Journal of Applied Engineering Research | Year: 2015

This paper surveys on the importance of human nail analysis through digital image processing for the prediction of various systemic and dermatological diseases. This paper covers the various diseases that can be predicted through nail analysis and on how a model for nail analysis can easily assist the medical practitioners in detecting various diseases. © Research India Publications.

Chakraborty A.,Union Christian College | Chand B.,Education College | Mondal B.C.,Sponsored Teachers Training College
Journal of the Indian Chemical Society | Year: 2013

Science educators have agreed that understanding of chemical bonding is the basis of chemistry education. In this field, many articles dealing with the problem of learning difficulties of students in the concept of mole, chemical equilibrium, solutions, electrochemistry and atomic structure can be found in the science education literature. Learning science is a cumulative process where new information is added to students' existing knowledge, constructing the knowledge based on what they already have. What students do with information which is presented to them depends largely on what they already think and believe. Constructivist approach seems to be effective in providing meaningful learning. According to this approach, this kind of learning can take place only when the learner relates the new information to his already existing knowledge. Knowledge cannot be transmitted to the learner's mind from a textbook or by the teacher. Instead, students construct their knowledge by making links between their ideas and new concepts through experience they acquire in school or society. Teacher, thus, must help students' correct alternative conceptions and assist meaningful learning. In this article we have concentrated the basic misconceptions of students to explain different types of chemical bonds and advocate some measures to eradicate the misconceptions related to chemical bonding.

Bindu K.R.,Sree Sankara Vidyapeetom College | Martinez A.I.,CINVESTAV | Vasudevan P.,Mahatma Gandhi University | Unnikrishnan N.V.,Mahatma Gandhi University | Anila E.I.,Union Christian College
Physica E: Low-Dimensional Systems and Nanostructures | Year: 2012

We report the synthesis and characterization of nanostructured ZnS powders without using any capping agent. The synthesis was carried out by the wet chemical method. From X-ray diffraction analysis, it was found that nanostructured ZnS exhibited the cubic structure with an average size of 2.5 nm. High resolution transmission electron microscopy (HR-TEM) observations revealed the cubic structure with grain size of around 2.5 nm. In the UV-vis absorption spectrum, the absorption peak shows a blue shift with respect to bulk ZnS. The particle size estimated by considering the effective mass approximation is 2.1 nm. Photoluminescence spectrum exhibits two peaks at 360 nm and 450 nm. The emission color is blue for excitation at 245 nm with CIE coordinates x=0.14 and y=0.038 and it is bluish white when excited at 360 nm with CIE coordinates x=0.2 and y=0.36. It is demonstrated that quantum confinement effects are present in the nanostructured powders without the addition of any capping agent. © 2012 Elsevier B.V.

Bindu K.R.,Sree Sankara Vidyapeetom College | Sreenivasan P.V.,Union Christian College | Martinez A.I.,CINVESTAV | Anila E.I.,Optoelectronic and Nanomaterials Research Laboratory
Journal of Sol-Gel Science and Technology | Year: 2013

The structural, morphological, optical and electrical properties of α-axis oriented nanostructured ZnS thin film prepared by dip coating have been studied in this article. The X-ray diffraction studies of the film shows that the ZnS was crystallized with cubic structure of particle size 27 nm with a strong orientation along (200) plane which is advantageous for optoelectronic devices. The scanning electron microscopy and TEM micrograph reveals that the film consists of nano crystalline columnar particles. From the investigation of the absorption spectra of this ZnS film, the band-gap is found to be higher (4 eV) than bulk (3.7 eV) indicating a blue shift. It is found that the film is having a transparency of >90 % in the visible-near IR region from 400 to 800 nm. From the photoconductivity measurements, it is evident that the film is photosensitive in nature. From the electrical resistivity measurements the conductivity of the film was found to be 3.4 × 10-2 Ω-1 cm-1. Hot probe method indicates that the synthesized ZnS film is n-type. © 2013 Springer Science+Business Media New York.

Anila E.I.,Union Christian College | Jayaraj M.K.,Cochin University of Science and Technology
Journal of Luminescence | Year: 2010

Photoluminescence (PL) and electroluminescence (EL) of SrS:Cu,F alternating current thin film electroluminescent (ACTFEL) device prepared by electron beam/thermal multi-source evaporation are presented. The active layer was grown at 380 °C and neither post-deposition annealing nor sulphur co-evaporation was performed. Two bands at 380 and 435 nm were present in the PL spectrum, which are suggested to be due to donor acceptor recombination. EL spectrum consisted of an additional band at 535 nm, which is attributed to Cu+ intracenter emission. The device exhibited yellowish white EL emission with chromaticity coordinates x=0.25, y=0.27 and low threshold voltage. © 2010 Elsevier B.V. All rights reserved.

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