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1372 articles for “DRA”
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The Impact of Linear Infrastructure on Land Utilization using GIS
Abstract: In all urban centers of the Tigray region and the nation as whole, there is inefficient urban land utilization and development. The bottlenecks in the supply of serviced land are caused by inadequate provision of infrastructure and services. Moreover, the government often provides arterial infrastructure, leaving the provision of secondary and tertiary infrastructure to individuals or private sector developers. As a result private sectors or individuals assembled raw land only. …
Published in Journal of Remote Sensing & GIS · Vol. 7, Issue 1, 2016 · pp. 64–74 Read article
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CFD Approach for Analyzing the Variation of Flow Parameters and Losses in a Mixed Flow Francis Turbine
Abstract: Francis turbine can be used for a wide range of head and discharge, thus it is the most versatile water turbine in use [1]. As load varies from full load; the regime of operation changes for meeting the required power demand on electric system [2]. Efficiency of Francis turbine drops significantly at part load and overloading operations due to increased shock losses at the entry to runner, eddy formation and …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 54–65 Read article
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Evaluation of the Effects of Vitamin D Supplementation on Glycemic Control and Lipid Profile in Normoglycemic and STZ-Induced Type-2 Diabetic Rats
Abstract: The term diabetes mellitus describes a metabolic disorder of multiple aetiologies and is characterized by chronic hyperglycemia with disturbances of carbohydrate, fat and protein metabolism resulting from defects in insulin secretion, insulin action, or both. The current approaches for treatment of diabetes are mostly dependent on insulin and other oral standard drugs, which have their own drawbacks. Thus, micronutrients supplementation is gaining momentum as the quest for management of diabetes …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 6, Issue 2, 2016 · pp. 24–34 Read article
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Assessment of Microbial Quality of Irrigated Cabbage with Wastewater in Laelay Maychew and Tahtay Maychew Woreda’s of Aksum, Tigrai, North Ethiopia
Abstract: Wastewater can be defined as water that has been badly affected in quality by anthropogenic effect and the possible origin can be from domestic, industrial, commercial or agricultural activities, surface run off or storm water and from drain inflow or infiltration. Quality of water and other food can be checked by the presence of Coliform bacteria because these bacteria are the predominant indicators. The purpose of this study was to …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 6, Issue 3, 2016 · pp. 42–48 Read article
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HIGH SPEED DISPENSER SYSTEM USING VLSI DEVICES FOR EW APPLICATIONS
Abstract: In present war scenario, Electronic Warfare plays a vital role. With advancement in the missile technology, the present day missiles having enhanced speed, performance and maneuverability. In order to tackle these advanced missiles the existing Electronic Counter Measures (ECM) are also needed to be upgraded. EW dispenser system is being used to dispensing IR Flare, Chaff and Electro-Optic (EO) material. However the present day dispenser systems suffer from the drawback …
Published in Journal of Aerospace Engineering & Technology · Vol. 1, Issue 1, 2011 · pp. 13–20 Read article
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Aerofoil Profile Analysis and Design Optimisation
Abstract: The aerofoil section is the incarnation of a wing or a lifting surface which is very important in an airplane wing design. While the shape of the aerofoil changes, their aerodynamic characteristics also change. This paper deals with a standard symmetrical aerofoil as reference and the effect of changes in shape due to minor variations in the coordinates. Eight new aerofoil shapes have been produced in this optimisation process. The …
Published in Journal of Aerospace Engineering & Technology · Vol. 3, Issue 2, 2013 · pp. 1–10 Read article
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Numerical Simulation of Low Reynolds Number Incompressible Flow over Two Side-by-Side Circular Cylinders
Abstract: A second-order accurate unstructured collocated implicit finite volume method based on the primitive-variable formulation is used to study the flow field around a pair of cylinders arranged in side-by-side configuration. Numerical simulations are carried out for long time on a high-resolution mesh to obtain the appropriate evolution of the overall flow field and vortex structure of the wakes. A wide range of gaps between the cylinders is considered over a …
Published in Journal of Aerospace Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 22–51 Read article
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Experimental Investigation of Lift forNACA 2412 Airfoil without Internal Passage with NACA 2412 Airfoil with Internal Passage in a Subsonic Wind Tunnel
Abstract: Wind tunnel experiments were carried out in a subsonic wind tunnel in Fluid Mechanics Laboratory at MITCOE, Pune. The objective of this research was to compare the experimental coefficient of lift and drag for a NACA 2412 airfoil with that for NACA 2412 airfoil with internal passage. Both the airfoils were of same dimensions and profile. The chord length (c) was 100 mm and the span (b) was 100 mm. …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 27–34 Read article
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Superiority of Tabs with Corrugations on Jet Mixing
Abstract: Normal 0 false false false EN-US X-NONE X-NONE The jet mixing promoting effectiveness of two identical rectangular tabs of blockage 2.5% (each), placed diametrically opposite at the exit of a Mach 1.65 axi-symmetric nozzle, is experimentally investigated. The efficacy of the tab with and without corrugations is studied at varied levels of expansions present at the nozzle exit. To quantify the tab performance the total pressure distribution along and across …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 15–26 Read article
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Experimentation of Flame Stabilization Using Flat Plate Gutter Made of Porous Material for Afterburner Applications
Abstract: Present experimental study is focused on the flat plate gutter made of different porous materials is to stabilize the flames for afterburner applications. The porous materials used for the gutters as a flame holder are Silicon Carbide (SiC), Zirconium Oxide (ZrO2) and Aluminium Oxide (Al2O3). The porous material flat plate gutters with different orientation angles of 0°, 30°, 45°, 60° and 90° to the main stream flow. The flat plate …
Published in Journal of Aerospace Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 71–76 Read article
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Development and Testing of Anti Hijacking System for Civil Aircraft
Abstract: A proof of concept system is developed and demonstrated to prevent hijacking attempt of aircraft. The system is mainly based on Raspberry Pi PC and the control program is written in the scripting language Python. The system will disable manual control of the aircraft, if a particular condition is met persistently beyond the predefined time limit. The condition to be met is simultaneous detection two authorised RFID tags for more …
Published in Journal of Aerospace Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 1–8 Read article
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Cast’ing People in Continuous Quality Improvement
Abstract: Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} The Hindu population has been divided into 4 classes (varna’s) paradigmed by Rishi Manu. These are: Brahmin, Kshatrya, Vaishta and Shudra. This 'varna vyavastha' is an arrangement based …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 1, Issue 2, 2011 · pp. 1–20 Read article
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Reading Habits - Is it on the Wane among Adolescents in Rural India?
Abstract: The reading habit influences in the promotion of one’s personal development in particular and social progress in general. Our study was conducted in the schools of the villages of Gowdahalli and Daradahalli of Chikamagalur district in the south western part of Karnataka state. A total of 110 students participated in this study, which consisted of 70 boys and 40 girls. These students were interviewed through a class to class survey …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 2, Issue 1, 2012 · pp. 1–4 Read article
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Reinforcing the Social Domain towards Pacifism in Gobind’s Way
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Guru Gobind Singh, the sikh commander was a lean conceptual soldier who laid the concept of synergy as illustrated by one of the earlier works of authors. Thus, called a guru by karma and also by virtue of being born as Guru Teg Bahadur’s son - the 9th guru of their dynasty, Guru Gobind Singh saw through the sinful rule to prepare …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 2, Issue 1, 2012 · pp. 5–18 Read article
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Understanding Plagiarism and maintaining research integrity through Ethics
Abstract: Recently, some eminent personalities of prestigious institute of national importance of India have drawn the attention of all scientific community as they were accused of either form of plagiarism. Plagiarism is defined by Office of the Research Integrity as, “The theft or misappropriation of intellectual property and the substantial unattributed textual copying of another's work. Understanding the savories of the problem, watchdog of plagiarism in India i.e. Society of Scientific …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 3, Issue 1, 2013 · pp. 26–29 Read article
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Impact of School Environment on Mental Health of Secondary-level Students
Abstract: A mentally healthy person shows a harmonious organization of desirable attitude, healthy values and righteous self-concept and a scientific perception of the world as a whole. School is the chief instrument of positive mental health program. It has the responsibility of helping a child achieve those behavior characteristics that can ensure for him the making of satisfactory adjustments to the demands of environment. So there has been made an effort …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 3, Issue 3, 2013 · pp. 9–14 Read article
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Teaching LSRW in Rural Engineering Colleges of Tamil Nadu—Where We Are? Where We have to be? —An Insight into Teaching Language Courses Effectively for Regional Medium Students
Abstract: In the announced list of rank holders of Anna University, many rural colleges have made their mark and continuously outperforming their city counterparts. While the top ten colleges of the city always have the highest number of university rank holders, many engineering colleges in other districts and rural areas boast of at least 20 university rank holders each. At least 12 colleges from rural areas like Dindigul, Sivakasi, Nagerkoil and …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 4, Issue 3, 2014 · pp. 30–35 Read article
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An Approach towards Visual Arts Today
Abstract: Visual arts is one of the hand of the high class of art known as “Fine Arts” where performing arts forms the another hand. The visual arts are art forms where expressions of an artist can be seen physically such as ceramics, drawing, painting, sculpture, printmaking, design, crafts, photography, video, filmmaking, literature, and architecture. Many artistic disciplines (performing arts, conceptual art, textile arts) involve aspects of the visual arts as …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 7, Issue 1, 2017 · pp. 11–13 Read article
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Epoxy Modified Bio-based Hyper branched Polyurethane/Clay Nanocomposites: Rheology and Biodegradability
Abstract: The rheological study of nanocomposite has significant contribution not only in processing but also reveals the dispersion state of the nano reinforcing agent in the matrix. This study divulges the rheological behavior of epoxy cured Mesua ferrea L. seed oil modified hyper branched polyurethane/clay nanocomposites. The influence of different preparative techniques viz. in situ and ex situ on the rheological properties was also investigated. The nanocomposites prepared by in situ …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 3, Issue 3, 2013 · pp. 1–12 Read article
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Role of Semiconducting Nanomaterials in Polymer Solar Cell
Abstract: This paper discusses the schematic aspect of semiconducting nanoparticle as applicable in harvest of solar energy via polymer solar cell and the significance of its various nano-layers. As recently observed semi-conducting properties in some inorganic materials have become topic of rigorous research for application in photovoltaic cells. Polymer solar cells are promising alternative to conventional solar cells which are made of crystalline silicon, to overcome their drawbacks such as high …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 1, 2015 · pp. 23–26 Read article