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1957 articles for “(DES)” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Design and Evaluation of High Bandwidth Micro-strip Patch Antenna Arrays for WLAN Applications
Abstract: Micro-strip antennas are preferred to WLAN applications because of their low profile, light weight and low power handling capacity. In this paper, micro-strip patch antenna (MSPA) arrays are designed and analyzed. The target frequency range is at S-band with frequencies that range from 2 to 4 GHz. Antenna arrays are explored to achieve higher gain and improved bandwidth (BW). The key parameters to obtain this goal are antenna dimensions such …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 1, Issue 3, 2014 · pp. 1–11 Read article
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Design of Electrostatic RF Switch using COMSOL
Abstract: This paper presents the design, modeling, and measurements of radio frequency micro electromechanical systems (RF MEMS) switches. These models are rectangular, taper, and meandering beam structures. The characteristics of RF MEMS switches including displacement and natural frequency are studied. Rectangular, taper, and meandering structures are selected because these three structures display different geometrical shapes. Geometrical shapes are one of the important factors as far as the mechanical and electronic characteristics …
Published in Current Trends in Signal Processing · Vol. 5, Issue 1, 2015 · pp. 13–16 Read article
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Aircraft Design and Development: An Overview
Abstract: This paper addresses issues related to airworthiness standards, air loads criticality, handling qualities requirements, and flight testing from the personal experiences of the author. Current control technology has significant impact on airworthiness specification description. Combination of air loads cases needs judicial selection along with control criteria. Control software can be synthesized in real time for required handling criteria. Concurrent aeroelasticity needs consideration for optimum aerodynamic design features that is highlighted …
Published in Journal of Aerospace Engineering & Technology · Vol. 4, Issue 1, 2014 · pp. 1–8 Read article
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Conceptual Design and Validation of Working of the Wing Morphing Mechanism Using Bellows
Abstract: The research on creating a smooth seamless wing which can literally morph its shape in mid-flight like birds has been in progress for many years. Such a wing will greatly enhance the flying capabilities of a normal aircraft. The wing can be morphed at different speeds to increase greater fuel efficiency. Our new design tends to create such a design without interfering with structural integrity of the wing. Keywords: Morphing …
Published in Journal of Aerospace Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 16–21 Read article
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Design and Numerical Analysis of Solar Powered Unmanned Aerial Vehicle Using Helium Gas
Abstract: The fundamental of unmanned aerial vehicle has been designed and runs for quite a while. This paper mainly focuses on the reduction of payload and power consumption resulting in increase of efficiency further by the use of helium gas in a solar powered unmanned aerial vehicle. In addition to these, another aim of the aircraft is its use in surveying purpose. A highly powerful live steaming camera is attached to …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 22–26 Read article
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A Descriptive Approach on the Relationship between Facebook and the Well-Being of Undergraduate College Students, Mekelle, Ethiopia
Abstract: In recent years, online social-networking sites have achieved notable popularity among college students. Online social networking sites, such as Facebook, Google+, and Bebo, have grown popularity in recent years and they provide an exciting new area of study in the field of psychology. A survey study under descriptive research, the populations included in the study were undergraduate’s students (N= 400) from different Departments of Mekelle University, Ethiopia, Male 232(58%) and …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 6, Issue 2, 2016 · pp. 1–7 Read article
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Screening of the Nutrient Parameters for Protease Production by Bacillus cereus Using Plackett-Burman Design under Submerged Fermentation
Abstract: Plackett-Burman experimental design was used to screen important nutrient parameters influencing the production of protease by Bacillus cereus, which was isolated from fish waste soil. The Plackett-Burman design is orthogonal in nature and it is a set of small and efficient experiments, which are very powerful in biotechnology research and development. Screening of 11 factors was done in 12 experiments. The 11 factors included one process parameter (initial pH of …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 2, Issue 2, 2012 · pp. 26–31 Read article
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Designing of QMF Bank
Abstract: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Quadrature mirror filter (QMF) banks have been of great interest during the past decade. These filters find application where a discrete signal is to split into a number of consecutive bands in the frequency domain, so that sub-band signal can be processed in an independent manner and sufficient compression may be achieved. Typical processing includes under sampling the sub-band signals, encoding …
Published in Journal of Instrumentation Technology & Innovations · Vol. 1, Issue 2-3, 2011 · pp. 1–10 Read article
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A Review Paper: Design of Fixed Wing Unmanned Aerial Vehicle Based on Magnificent Frigatebird, Fregata Magnificens
Abstract: The magnificent Frigatebird has been investigated extensively in the past because of its extraordinary flying capabilities. Most of its life is spent in the air. Frigate can stay aloft continuously for months. All of these astounding facts about Frigate bird point towards its aerodynamic anatomy and preferred flight mode, Soaring. In this review paper, we summarize the research work done on Frigatebird, its stupendous aerodynamics and flight capabilities. We end …
Published in Journal of Aerospace Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 40–44 Read article
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Research Paper on Design and Development of Agricultural Polyhouse Cooler for Temperature Control During Summer
Abstract: During the summer season or during hot climates, the plant in the polyhouse or greenhouse needs the controlled temperatures for their optimum growth. If the temperature exceeds the required temperature, it starts damaging the newly springs of buds of plants affecting their productivity. There’s not only the temperature that should be controlled. Polyhouse plants are also affected by the relative humidity. And managing both at the same time is not …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 1, 2021 · pp. 21–25 Read article
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Design of High Speed Slamming Planing Craft
Abstract: This paper chronicles the hypothetical study, test results, design aspects such as stability characteristics, vessel’s high speed performance i.e. short take-off and landing distance, and vertical take-off and landing characteristics, operating at low shallow draft, high speed propulsion efficiency sans cavitation interference, less machinery operating noise, compact hullform & structure, efficient conveyance and applications of High Speed Slamming Planing craft (HSSPC). Amongst High Speed Performance Marine Vessels, this is one …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 2, 2020 · pp. 14–20 Read article
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A Literature Review on structural analysis and design of offshore structure
Abstract: In the present give a review study on structural analysis and design of marine structures i.e. offshore structure. This review study deals with the structural geometry of compliant offshore platforms while emphasizing the design and development of these platforms rather than of fixed platforms. Investigations is carried out on the response control of a tension leg platform (TLP) and an articulated tower are presented. various control strategies that are commonly …
Published in Journal of Offshore Structure and Technology · Vol. 9, Issue 1, 2022 · pp. 34–36 Read article
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Preliminary design assessment of heavy water purification columns through shortcut calculations including hydraulic and mass transfer characteristics
Abstract: Heavy water having deuterium content of 99.9% and more is used as the moderator and the coolant in pressurized heavy water nuclear reactors (PHWRs). This purity is maintained by vacuum distillation in packed columns. This work analyses the effect of packing type on preliminary column design based on certain user-defined specifications, with a focus on mass transfer and hydraulic characteristics of the column. Geometrical characteristics of commercial metallic packing materials …
Published in Journal of Water Pollution & Purification Research · Vol. 5, Issue 3, 2018 · pp. 20–29 Read article
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Design and Development of a Pressure Measurement and Calibration Device for Use in Compression Therapy to Treat and Prevent Venous Ulcers
Abstract: Compression uses a combination of constricting clothing, bandages, or wraps to press against the skin and reduce swelling. By reducing the amount of fluid that accumulates in the affected area, tissue damage can be prevented or minimized. Compression therapy is a fundamental treatment for the root cause of venous ulcers and for preventing their recurrence. Various systems for implementing compression are available to suit individual patient needs and improve adherence …
Published in Journal of Aerospace Engineering & Technology · Vol. 13, Issue 3, 2023 · pp. 23–33 Read article
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A Method of Universal Primer Design for The Detection of Diverged CTX-M Beta-Lactamases in Multi-Drug Resistant Superbugs
Abstract: Complexity of many diverged β-lactamases in common multi-drug resistant bacteria has reached very high level. We found >40% of common bacteria in Kolkata water bodies were ampicillin resistant and reported clinical isolates were >95% ampicillin resistant worldwide. More than twenty unique sequence classes of β-lactamases were known to cause MDR inactivating penicillin, cephalosporin and carbapenem drugs. Further, there are other diverged MDR genes like drug efflux genes (acrAB, mexAB-EF, tetA), …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 9, Issue 2, 2019 · pp. 1–10 Read article
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Design and Simulation Study of Drug-Eluting Stents for Treating Hepatic Artery Stenosis Post Liver Transplantation
Abstract: Hepatocellular carcinomais amongst the most common cancers worldwide, accounting for nearly 1 million deaths annually. Early diagnosis would help in treating with chemotherapy and ablative techniques but with most of the liver being affected; only transplantation would be a treatment of choice. Apparently, after orthotopic liver transplantation (OLT), an issue of hepatic artery stenosis (HAS) can occur which would later lead to hepatic artery thrombosis (HAT), with subsequent liver failure …
Published in Research & Reviews: A Journal of Bioinformatics · Vol. 7, Issue 1, 2020 · pp. 7–13 Read article
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A SMART DESIGN OF DOMESTIC WATER SUPPLY NETWORK USING EPANET 2.0 SOFTWARE FOR CHITYALA, NANDIGUDEM, VADALAKUNTA AND BHIMOLU VILLAGES IN WEST GODAVARI DISTRICT OF ANDHRA PRADESH STATE
Abstract: Prevalence of a proper Domestic Water Supply Network, could be coined as a fundamental requirement for any borough for its proper functioning and survival. Even today, many villages including Chityala, Nandigudem, Vadalakunta, Bhimolu, Saggonda in Andhra Pradesh State are suffering adversely by the absence of this network. So, the Government of Andhra Pradesh is considerate to provide a suitable Domestic Water Supply Network for all these villages, to put forth …
Published in Journal of Remote Sensing & GIS · Vol. 12, Issue 1, 2021 · pp. 26–42 Read article
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Library Buildings: New Aspects of Library Design
Abstract: The importance of library building is obvious, regardless of whether one is thinking of the institution teaching and research program of its budget poor building can seriously handicap students and professor where as a good one can contribute to the intellectual health of the whole institution. The study regarding the building of library will play a very important role to design the new building of libraries according to new IT …
Published in Journal of Advancements in Library Sciences · Vol. 5, Issue 2, 2018 · pp. 75–79 Read article
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A Descriptive Study on Assessment of Knowledge, Attitude and Practices Regarding Road Safety Rules and Regulations among Vehicle Users in Selected Areas of Chandigarh, U.T.
Abstract: Injuries due to road accidents and collisions have a significant affect in increasing deaths and disabilities day by day. Use of over speed vehicles, violation of necessary traffic regulations have also led to increase in these incidents. The problem of deaths and injury as a result of road accidents is now acknowledged to be a Global phenomenon. A descriptive study was conducted among vehicle users in Chandigarh and 250 vehicle …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 8, Issue 3, 2018 · pp. 69–76 Read article
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Design, Fabrication and Performance Evaluation of Economic Grain Dryer
Abstract: AbstractDrying of grains is very essential that is to be performed effectively and immediately after the harvest to retain the quality of the grain and to prevent infestation and germination. To achieve this objective an economic grain dryer made of available materials like air heater, air blower, feed regulator, and applicator was designed, fabricated and evaluated for its performance. Various parameters such as; relative humidity of hot air, air flow …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 5, Issue 1, 2016 · pp. 1–7 Read article