Archives-September 2016

Good quality single crystals of a new semi organic Bis p- Nitrophenol Magnesium chloride (BPNPMC) were grown from solution by slow evaporation technique at room temperature. The grown crystal have been confirmed by single crystal X-Ray Diffraction Method. UV -Vis transmission and absorption studies reveals that the grown crystal were optically transparent through the visible range. The vibrational frequencies of various functional groups in the crystals have been derived from Fourier transform infrared spectrum (FTIR). In the dielectric studies, the dielectric constant and dielectric loss of the crystal were measured as a function of frequency and various temperatures. The optical studies indicate the sample, optical transparency window is quite wide, making it suitable for NLO applications. Micro hardness studies were carried out to confirm the mechanical behavior of the crystal. The second harmonic generation (SHG) test has been confirmed by the Kurtz powder test and its efficiency 1.73 times higher than that of KDP.

Green building research and construction is getting day by day a place in construction industry worldwide. With augmenting issues of environment and growing concern over climate change, a social sustainable green building research is getting importance. However, construction of green buildings still encounters impediments, as there is a lack of proper framework and research. The present study aims to identify common barriers encountered and social factors which are important for the sustainability of green building research. The findings from this review reveal that, although project cost is the paramount barrier among others, there is no paucity in sustainable knowledge in construction industry. Furthermore, a sustainable green building research (SGBR) framework for green building construction should be developed to overcome the barriers.

Wet Chemical Synthesis method was used to synthesis Ni doped ZnS and undoped ZnS. The as-prepared products were characterized using XRD, FE-SEM, UV-VIS and PL analysis. The crystal structures, morphologies and optical properties of as-prepared samples along with the particle size, micro strain and dislocation density have been investigated. The results exhibit a crystalline hexagonal structure in particles, rod shape size about 2nm and optical bandgap of 5.56 ev.

Cloud computing is the emerging technology in IT industry Cloud Computing helps the startup companies to implement their ideas and grab opportunities without worrying about the capital needed to start their Business plan. It is built on the concept of virtualization, utility computing, networking and Autonomic computing. The aim of this paper is to provide better understanding of the security challenges of cloud computing and analyze the research direction in this widely uses technology affecting people . In this paper, we present the prospect of cloud computing, its architecture and pros and cons of Cloud Computing .

Environment monitoring system is developed to ensure the safety and convenience of an environment which needs high security. It makes use of a temperature sensor, door sensor, hall effect sensor, RFID and accelerometer. This paper aims to develop such an embedded system that monitors parameters like temperature and door status through an android app along with providing security and high temperature alerts. Over current sensing is also employed to protect the circuit by relay switching. The real time values from the sensors are monitored by LPC1754 and SMS is sent to required mobile numbers having the EMS app with the help of a GSM module. The system uses a compact circuitry built around ARM Cortex M3 LPC1754 microcontroller Programs are developed in Embedded C using the IDE Keiluvision4. JTAG is used for loading programs into Microcontroller.

This research presents the description of the procedure for the manufacturing the Organo-lead halide Peroveskite Solar Cells (OPSC) . We descried the synthesis organo-lead halide peroveskite materials , MAPbIBr2 and MAPbBrCl2 , which employed as absorption layer in OPSCs . Optical properties for the peroveskite materials which used to prepare OPSCs is tested by the measurements the absorbance spectrum in order to calculate the energy gap . X-ray diffraction , AFM microscope and SEM microscope are used in our work to study the structure of the samples . Finally , the tests OPSCs by Light I-V Measurement System are implemented in order to obtained the parameters of the manufacturing devices . The Power Conversion Efficiencies (PCE) of OPSCs are (0.12%) and (0.07%) to the devices have MAPbIBr2 and MAPbBrCl2 as sensitized absorption layer, respectively. Measurements are tested at AM1.5 global sunlight (100 mW cm?2) .

In this study, the experiment was conducted using a diesel engine single cylinder four-stroke direct injection, air-cooled. Used in the experiment are four types of fuel: pure diesel, mixture of methanol and diesel by methanol 8% -16% and 24%, three levels of speeds 1500, 2000 and 2500 rpm .we studied in this research The engine performance parameters which included, thermal efficiency, brake specific fuel consumption, noise level ,friction power.

Image is the combination of pixels. Pixel is the element which is present in the image in the dot form. In today’s era image is treated like as 3D form but at previous time image is in the form of 1D text or 2D text. In this paper we show the image compression on the images. We basically perform the compression on the biomedical images. Biomedical images are very huge in size. We select biomedical images because if we transfer any biomedical image from one place to another then we need compression methods.

In this study, a surface structure of zinc oxide (ZnO) nano rods prepared by hydrothermal method was investigated. The crystal structure of ZnO nano rods arrays were investigated by X-ray diffractometer (XRD) with Cu K? radiation. The surface morphologies were observed using Scanning Electron Microscope (SEM). The prepared ZnO nano rods have wide range of applications in Photo catalytic degradation of textile colouring dyes.

Antenna arrays are particularly preferred as they provide flexibility in design, excellent gain and high directivity. They allow optimization via the tapering of amplitude, the special distribution, the phase distribution or their combination providing also the option to generate specific sector and cosec beams for advanced radar applications. The narrow beams obtained from parabolic antennas or from an array of radiators are used to achieve high gain, precise direction finding and high degree of resolution of complex targets. But these narrow beams require multi scans which is highly involved and time consuming. These difficulties can be overcome by providing flat beams which are broad basically. The phase only control allows a fast scanning of the beam without moving the antenna structure. In this paper an attempt is made to design an array of antennas to produce shaped beams like sectors by introducing an optimally designed phase distribution. The results of this paper are extremely useful for designers of antenna arrays for scanning and non-scanning radar and communication applications.