Microstructural and Optical Properties of CuS Nanoparticles prepared by Sol Gel route
Publication date: Available online 6 July 2016 Source:Perspectives in Science Author(s): Sana Riyaz, Azra Parveen, Ameer Azam This paper demonstrates the synthesis of CuS nanoparticles using sol gel route in the presence of distilled water at 100°C for 3hrs. X-ray diffraction (XRD), Energy Dispersive X-ray Spectrum (EDS), and Scanning Electron Microscope (SEM) techniques were employed to study the microstructural properties of the prepared sample. Crystallite size was determined by Debye Scherrer Formula and was found to be 17.73nm. The EDS spectrum shows a clear peak of Cu and S elements. SEM images show the mo...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Optimization of Fenton oxidation for the removal of methyl parathion in aqueous solution
Publication date: Available online 9 July 2016 Source:Perspectives in Science Author(s): Roli Saini, Chelluboyana Vaishnava Raghunath, Poornima Pandey, Pradeep Kumar In the present study, for the treatment of methyl parathion, Fenton oxidation is adopted. The aims of this study were (a) to assess the removal efficiency in terms of chemical oxygen demand (COD), (b) to scrutinize the influence of different parameters: initial pH, concentrations of H2O2 and Fe2+ and, (c) Response surface methodology (RSM) was used to design the Fenton process. Three-level central composite design (CCD) was applied in designing the...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Influence of thickness and position of the individual layer on the permeability of the stratified soil
Publication date: Available online 9 July 2016 Source:Perspectives in Science Author(s): Priyank Gupta, Javed Alam, Mohammad Muzzammil Flow of fluid through a porous media is a very important phenomenon that occurs largely in many physical situations such as flow in an aquifer, flow through filters for water purification in sewage treatment plant, flow in packed bed chemical reactor etc. Permeability is a characteristic parameter for a porous media and it tells about the ease with which water flows through the interconnected voids. Since it directly influences the rate of flow of water in a soil, it has a decisiv...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Assessment of Cranial Blood Volume Changes Using Non-Invasive (BIA) Technique
Publication date: Available online 9 July 2016 Source:Perspectives in Science Author(s): Kashif Javed, Bharat Bhushan Sharma, Munna Khan Bioelectrical impedance analysis (BIA) is a extensively technique used for estimating body composition. It is simple, rapid, non-invasive, fast and cheap method to characterize any matter. Unlike various complicated methods, bio-impedance measurement technique is simple, less time consuming and non-invasive method for various applications including medicine, biotechnology. However, despite of intensive research in this field from more than six decades, only a few applications ha...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Analytical modeling of trio-optical asymmetrical microring resonator with vertical coupling
Publication date: Available online 9 July 2016 Source:Perspectives in Science Author(s): Suchita Lakra, Sanjoy Mandal Modeling of vertically coupled trio-optical microring resonator (VCTOMRR) with asymmetrical rings is developed in theory by applying delay line signal processing method. The frequency simulated response characteristic and its dispersion and group delay characteristics are advanced using MATLAB environment. The effectiveness of VCTOMRR with regard to free spectral range (FSR) and crosstalk is obtained from the different performance graphs. This proposed VCTOMRR can provide very wide FSR of 50.1nm ran...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Superscalar Pipelined Inner Product Computation Unit for Signed Unsigned Number
Publication date: Available online 9 July 2016 Source:Perspectives in Science Author(s): Ravindra P. Rajput, M N Shanmukha Swamy In this paper, we proposed superscalar pipelined inner product computation unit for signed-unsigned number operating at 16GHz. This is designed using five stage pipelined operation with four 8×8 multipliers operating in parallel. Superscalar pipelined is designed to compute four 8×8 products in parallel in three clock cycles. In the fourth clock cycle of the pipeline operation, two inner products is computed using two adders in parallel. Fifth stage of the pipeline is designed to comput...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
A unified approach for performance analysis of randomly generated robotic morphologies
Publication date: Available online 9 July 2016 Source:Perspectives in Science Author(s): Sameer Gupta, Ekta Singla An attempt is presented towards a unified approach to compute kinematic performance of planar manipulators with the links connected in series, in loops and in combinations of both. The motivation of this work lies in the fact that serially connected links are normally selected for large manipulability and parallel manipulators are utilized for better stiffness. To acquire a topology suitable for a given task, the topological parameters can be considered variables in a manipulator design problems. Howev...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Optimization of stepped-cone CVT for Lower-Limb Exoskeletons
Publication date: Available online 11 July 2016 Source:Perspectives in Science Author(s): Ashish Singla, Baltej Singh Rupal, Gurvinder Singh Virk Wearable exoskeletons offer interesting possibilities to address the global concerns of the ageing society and hence many researchers and industries are investing significant resources to develop new innovations in the area of physical assistance. An important issue in providing effective physical assistance is how the needed torques can be generated efficiently and effectively. This paper considers this area and explores the use of continuous variable transmissions (CV...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Mathematical Modeling of a Hand Crank Generator for Powering Lower-Limb Exoskeletons
Publication date: Available online 11 July 2016 Source:Perspectives in Science Author(s): Ashish Singla, Saurav Dhand, Gurvinder Singh Virk With advances in technology and ageing societal concerns growing, personal care devices are gaining importance globally. One such area is lower-limb exoskeletons, used to assist persons to move around for normal daily living. Most of the commercially available assistive exoskeletons use rechargeable Li-Ion batteries, which require frequent charging to meet the operational needs. Charging becomes a problem when a person relying on a mobility exoskeleton has to go outdoors for ...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Kinematic Modeling of a Five-DOFs Spatial Manipulator used in Robot-Assisted Surgery
Publication date: Available online 11 July 2016 Source:Perspectives in Science Author(s): Shakti Singh, Ashish Singla, Amanpreet Singh, Sanjeev Soni, Sanjeev Verma Since last three decades, research in the field of robot kinematics is boosted-up among different researchers worldwide. This is mainly due to their increased use in various challenging fields of engineering and science. One such challenging application is the use of master-slave concept in a robot-assisted surgery. The authors have already performed the kinematic study and gravity balancing of seven degrees-of-freedom (DOFs) surgeon-side manipulat...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Comparison of Environmental Sustainability of Pharmaceutical Packaging
Publication date: Available online 11 July 2016 Source:Perspectives in Science Author(s): Geo Raju, Prabir Sarkar, Ekta Singla, Harpreet Singh, Rachit Kumar Sharma Pharmaceutical companies are increasingly imparting a lot of importance on becoming more sustainable by developing medicines that are having same medicinal value but with reduced environmental impact. Type of packaging of tablets affects the emission generated during packaging of medicines. Selection of an appropriate packaging of medicine also influences the emission added to the environment. This paper aims at the comparison of environmental impa...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
3-D Numerical study of the effect of Reynolds number and baffle angle on heat transfer and pressure drop of turbulent flow of air through rectangular duct of very small height
Publication date: Available online 11 July 2016 Source:Perspectives in Science Author(s): Abhijit Paul, Dipak Sen, Ajoy Kumar Das Present article illustrates a computational study of three-dimensional steady state heat transfer and high turbulent flow characteristics through a rectangular duct with constant heat fluxed upper wall and single rectangular cross-sectioned baffle insertion at different angles. RNG k-ɛ model along with standard wall function based computations has been accomplished applying the finite volume method, and SIMPLE algorithm has been executed for solving the governing equations. For a Reyn...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
A Novel PRP based Deterministic, Redundant and Resilient IEC 61850 Substation Communication Architecture
Publication date: Available online 11 July 2016 Source:Perspectives in Science Author(s): S.M. Suhail Hussain, Mohd Asim Aftab, Ikbal Ali A secure, reliable, redundant, resilient, time critical, efficient and interoperable substation communication network (SCN) is a prerequisite for a viable Substation Automation System (SAS). Due to emergence of IEC 61850 as a global standard for substation automation, the interoperability issues among components of substation from different vendors is resolved. The communication network must be fault tolerant and any substantial levels of disturbances should not affect the norm...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
Performance Analysis of DoS LAND Attack Detection
Publication date: Available online 11 July 2016 Source:Perspectives in Science Author(s): Deepak Kshirsagar, Amit Rathod, Sachin Wathore Nowadays, e-community business, web servers and organizations, mainly suffered by Denial of Service (DoS) attacks. DoS is a common attack causes significant problems in business operations and 65% organizations are suffering over the Internet. This type of attack is created by sending a high rate malicious traffic towards the server and block genuine users using desired network sources and services. In this way this attack consumes the network resources and services which result...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
A Novel Technique for Node Authentication in Mobile Ad-hoc Networks
Publication date: Available online 11 July 2016 Source:Perspectives in Science Author(s): Srinivas Aluvala, K. Raja Sekhar, Deepika Vodnala Mobile ad-hoc network is a collection of nodes in mobility that communicate to one another forming a network through wireless links, in which each node acts a router and forward packets to destinations. The dynamic topology and self organizing of the nodes make them more vulnerable to the network. In MANET, the major challenging task is to provide security during the routing of data packets. Various kinds of attacks have been studied in ad-hoc networks, but no proper solution...
Source: Perspectives in Science - July 14, 2016 Category: Science Source Type: research
