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1463 articles for “loss”
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Analysis of Microstrip H-Shaped Patch Antenna as a Moisture Sensor
Abstract: There are certain advantages of microstrip patch antenna having low cost, low profile antenna. But inspite of that there are certain disadvantages also like low bandwidth, low efficiency, complexity. This paper introduces the potential of the H-shaped microstrip antenna using DGS multiband as a microstrip sensor for bandwidth improvement and developed a relationship between return loss and frequency. This is simulated at CST software and the result was measured on …
Published in Recent Trends in Sensor Research & Technology · Vol. 2, Issue 3, 2015 · pp. 1–8 Read article
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Braking System Using Ultrasonic Sensors
Abstract: The braking system is arguably the most important system in any automobile. The existing braking system has certain critical problems, which could lead to major problems like fatal accidents, loss of lives of pedestrians and damage to government property. Air bags are available nowadays, which protect the driver and the passengers. However, the external damage to the vehicle cannot be prevented and its repair cost may be expensive. Let the …
Published in Recent Trends in Sensor Research & Technology · Vol. 3, Issue 1, 2016 · pp. 33–39 Read article
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Deteriorated Square Microstrip Patch Antenna
Abstract: This paper contains microstrip patch antenna designed by way of coaxial feed technique. The antenna is mainly intended to be used for WiMAX middle band (3.25-3.85 GHz) wireless applications. The result shows that wide bandwidth of 68.46% is obtained covering the frequency range from 2.32 to 4.73 GHz. The characteristics of the designed structure are investigated by using MoM based on electromagnetic solver, IE3d. In the end, an extensive analysis …
Published in Recent Trends in Sensor Research & Technology · Vol. 4, Issue 1, 2017 · pp. 13–17 Read article
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Design of “Hexagonal Rings’’ Shaped Cover Metamaterial for WLAN Applications Enhancement of Microstrip Patch Antenna Parameters at 2.31 GHz
Abstract: A rectangular microstrip patch antenna (RMPA) along with metamaterial which has design of hexagonal rings-shaped cover structure is proposed at a height of 3.2 mm from the ground plane. The RMPA with proposed metamaterial structure is designed to resonate at 2.31 GHz frequency. This work is mainly focused on increasing the potential parameters of microstrip patch antenna. The proposed metamaterial structure significantly reduces the return loss and increases the bandwidth …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 1, Issue 1, 2014 · pp. 32–36 Read article
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Multi Resonant Microstrip Antenna with Partial Ground for Radar Application
Abstract: In this paper, a novel structure of microstrip antenna using partial ground technique and suitable for Radar application has presented. The substrate of the proposed antenna was made of glass epoxy substrate, while radiating element and ground plane are made out of copper. The proposed novel design has high gain, directivity, good return loss and multi bands. Improvement in the design is done by increasing the electrical length and area …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 2, 2015 · pp. 1–6 Read article
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2.9 GHz Plus Slotted Square Microstrip Patch Antenna
Abstract: This paper contains microstrip patch antenna designed by way of coaxial feed technique. The antenna is mainly intended to be used for WiMAX middle band (3.25–3.85 GHz) wireless applications. The result shows that wide bandwidth of 68.46% is obtained covering the frequency range from 2.32 to 4.73 GHz. The characteristics of the designed structure are investigated by using MoM based on electromagnetic solver, IE3d. In the end, an extensive analysis …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 3, 2016 · pp. 16–20 Read article
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Computation of Indium concentration in Indium Gallium Arsenide semiconductor at Terahertz frequency
Abstract: Concentration of indium in indium gallium arsenide (InxGa1-xAs) is computed at optical signal having wavelength 589 nm . Reflection as well as absorption losses are considered to obtain the transmitted intensity. Analytical result showed that reflectance increases with increasing of indium concentration, where absorbance decreases with the same concentration. An experimental set up is designed to find out the transmitted intensity, which leads to the computation of concentration of indium …
Published in Journal of Microelectronics and Solid State Devices · Vol. 1, Issue 1, 2015 Read article
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A Compact Pellet Drum Shape Microstrip Patch Antenna
Abstract: This paper consists of microstrip patch antenna designed with coaxial feed technique. The antenna is mainly anticipated to be used for UMTS wireless applications. The results illustrate that wide bandwidth of 33.26% is obtained covering the frequency range from 2.03 to 2.84 GHz. Next, the characteristics of the designed structure are investigated by using MoM based electromagnetic solver, IE3d. Finally, a broad analysis of the return loss, radiation pattern and …
Published in Journal of Microelectronics and Solid State Devices · Vol. 3, Issue 3, 2016 · pp. 10–14 Read article
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Development of Inhibitive Water-based Drilling Fluid System for Shale Formation
Abstract: The drilling of troublesome shale formations leads to severe wellbore instability problems due to swelling and dispersion of the shale cuttings in the welllbore. Hence, the formulation of inhibitive water-based drilling fluid system with enhanced rheological properties and filtration characteristics is a critical issue for these complex shale formations. This research article consists of a favourable drilling fluid system developed using potassium chloride (KCL), partially hydrolyzed polyacrylamide (PHPA), ethylene glycol …
Published in Recent Trends in Fluid Mechanics · Vol. 1, Issue 3, 2014 · pp. 41–45 Read article
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Exergy Analysis of Evacuated Tube Two Fluid Solar Water Heating System
Abstract: The topic of the research of solar energy has become a matter of great concern due to energy crisis all over the world. Solar energy is the very promising source of energy i.e. easily available. In this study, exergy analysis of evacuated tube two fluid solar water heating system is carried out along with vertical shell and tube heat exchanger. In this study, energy quality and quantity of the system …
Published in Recent Trends in Fluid Mechanics · Vol. 3, Issue 2, 2016 · pp. 6–11 Read article
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Optimization of Venturimeter Geometry for Minimum Pressure Drop using CFD Analysis
Abstract: A venturimeter is one of the accurate flow measurement devices used to measure volumetric flow rate based on differential pressure. Pressure recovery is a problem when flow measurement is done by venturimeter. So, it is necessary to select its geometrical parameters in such a way that minimum pressure loss occurs. In this paper, optimization of geometrical parameters of venturimeter for minimum pressure drop has been done using CFD analysis. For …
Published in Recent Trends in Fluid Mechanics · Vol. 3, Issue 2, 2016 · pp. 31–35 Read article
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Fluid Flow Analysis and Flow Path Optimization of a Centrifugal Fuel Injector for a Turboshaft Aero Engine
Abstract: The present work of optimization is made for specific dimensions of a rotary fuel injector used in two of the high-performance defense helicopter’s gas turbine engines, presently. The need for doing this study is to meet the thermal design requirements of limiting the combustion chamber temperatures to an optimum designed value which heavily depends on finely divided homogeneous droplet sizes, the SMD (Sauter Mean Diameter) of the fuel that is …
Published in Recent Trends in Fluid Mechanics · Vol. 4, Issue 1, 2017 · pp. 22–27 Read article
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Textile Antenna for C-Band Satellite Communication Application
Abstract: Now days the international activity increasing in body area networks (BANs), wireless personal are Networks (WPANs), and medical sensor networks. This has given rise interest in wearable antennas that are designed for operation on the human body, or the bodies of animals. In this paper a compact and flexible textile antenna works at 3.64–4.79 GHz for body centric wireless and C-band satellite Communication has been presented. Blue jeans fabric used …
Published in Journal of Geotechnical Engineering · Vol. 2, Issue 2, 2015 · pp. 20–25 Read article
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Synthesis, Characterization and AC Conduction of Polyaniline Fibers
Abstract: The present paper aims to study the preparation of polyaniline fibers and characterize them. Polyaniline fibers were synthesized by chemical oxidation polymerization where ammonium persulfate [(NH4)2S2O8] was used as oxidant to oxidize aniline to polyaniline. The polyaniline fiber was characterized by XRD, FTIR, TEM and UV-Visible spectroscopy. The characteristic peaks in FTIR and UV-Visible spectra confirmed the expected structure of polymer as reported in the literature. Further, Transmission electron microscopy …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 16, Issue 3, 2014 · pp. 25–30 Read article
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Slurry Erosion Behaviour of D-Gun Sprayed Cr3C2-25NiCr and WC-12Co Coatings on CA6NM Turbine Steel Material
Abstract: In this research work, Erosive wear behaviour of hydraulic turbine material, i.e., CA6NM is investigated. The samples of alloy were coated by different powders Cr3C2-25NiCr and WC-12Co with detonation spray gun technique. Erosion tests have been conducted on self-made erosion test rig with different parameters. L9 Taguchi technique has been used for design of experiment by taking four factors viz. impact velocity, impact angle, slurry concentration and particle size. The …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 4, Issue 2, 2017 · pp. 8–17 Read article
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Pellet Drum Microstrip Patch Antenna for UMTS Application
Abstract: This paper consists of microstrip patch antenna designed with coaxial feed technique. The antenna is mainly anticipated to be used for UMTS wireless applications. The results illustrate that wide bandwidth of 33.26% is obtained covering the frequency range from 2.03 to 2.84 GHz. Next, the characteristics of the designed structure are investigated by using MoM based electromagnetic solver, IE3d. Finally, a broad analysis of the return loss, radiation pattern and …
Published in Journal of Semiconductor Devices and Circuits · Vol. 4, Issue 1, 2017 · pp. 24–28 Read article
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Response Spectrum Analysis of RC Buildings Constructed on Plain and Sloping Ground with Different Configuration of Shear Walls
Abstract: Abstract Buildings constructed on slopes are different from those in plains. They may be irregular and unsymmetrical in horizontal and vertical planes, and torsionally coupled. Hence, they are susceptible to severe damage when affected by earthquake ground motion. We can’t avoid the future earthquakes but the preparedness and safe building construction practices for earthquakes can certainly reduces the extent of damage and loss of both property and life. Shear wall …
Published in Journal of Structural Engineering and Management · Vol. 2, Issue 3, 2015 · pp. 65–73 Read article
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Substituted Thiosemicarbazides as Corrosion Inhibitors for N80 Steel in Hydrochloric Acid
Abstract: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 N-isonicotinoyl-N′-aryl thiosemicarbazides have been synthesized and employed as corrosion inhibitors for N-80 steel – 15% hydrochloric acid system at 25 ï‚°C. On the basis of their influence on anodic and cathodic polarization behavior, these compounds could be classified as ambiodic inhibitors. Weight loss and electrochemical data leading to their inhibition efficiencies (IEs) suggest that these inhibitors followed adsorption mechanism. Among the …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 3, Issue 2, 2012 · pp. 25–35 Read article
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Physico-Chemical, Phyto-Chemical and HPTLC Analysis of Root of Melia azedarach Linn
Abstract: Mahanimba, botanically known as Melia azedarach L. is an important medicinal plant of Ayurveda. Different parts of Mahanimba are widely used to treat many ailments. Its root is used in Gridhrasi (sciatica) and also used as an ingredient of many Ayurvedic formulations. Present study was carried out to evaluate physicochemical, phyto-chemical and HPTLC analysis of root of M. azedarach Linn. following standard guidelines. Results of physicochemical study revealed that, root …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 7, Issue 2, 2016 · pp. 1–5 Read article
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Pharmacognostical and Pharmaceutical Analysis of Amavatari Rasa- A Herbo-mineral Compound
Abstract: Amavatari Rasa is a herbo-mineral formulation, composed of processed mercury, sulphar, Terminalia chebula Retz, Terminalia bellerica Roxb., Phyllanthus embilica (Embelica officinalis Gaertn), Plambagozeylenica Linn., Commiphora wightii (Arn) Bhand and Ricinuscommunis Linn. This formulation is routinely practiced in cases of Rheumatoid Arthritis, but preliminary physicochemical and pharmacognostical profiles are not available. Considering this, an attempt has been made to develop this profile. Pharmacognostical study of raw drugs was carried out. Organoleptic …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 7, Issue 2, 2016 · pp. 6–10 Read article