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375 articles for “working concentration”
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Effects of Variation of Differential Gain and Injection Current on the Performance Characteristics of the Designed 405 nm MQW Violet Laser
Abstract: AbstractIn this work the Designing and Performance Analysis of a 405 nm InGaN based multi quantum well (MQW) Violet Laser have been presented. The internal designing of 405nm Violet Laser has been done with appropriate calculation. The desired wavelength of 405nm was obtained by adjusting the exact concentration of In0.0979Ga0.9021N / Al0.07Ga0.93N. The effects on Rate Equations by varying the differential gain and Injection current have been observed. Also the …
Published in Trends in Opto-electro & Optical Communication · Vol. 4, Issue 1, 2014 · pp. 13–22 Read article
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Mud Acid Effect on Fines Migration Problem Using a Newly Developed Al/Zr-Based Clay Stabilizer (A): Mitigation Can Happen
Abstract: Sandstone reservoirs exhibit severe fines migration problems subsequent to conventional mud acid (HCl: HF) treatments. The acid treatment proved to be effective for a relatively short period of time, with a sudden production decline owing to either that mud acid spent rapidly in close proximity to the wellbore, causing clays to migrate into the acidized area and re-plug the formation; or that the mud acid system actually weakens the structure …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 11–29 Read article
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Teaching Methods of Programming Using Robots: A Review
Abstract: AbstractTeaching programming to beginners is a troublesome errand because of the unpredictable way of the subject, the negative generalizations are related with programming, and because initial programming courses frequently neglect to energize understudy understanding. This review examines the adequacy of utilizing robots as devices in instructing the basic programming and to decide if such innovation can defeat the present hindrances for learners in this specific circumstance. The precise writing survey …
Published in Journal of Advancements in Robotics · Vol. 4, Issue 1, 2017 · pp. 9–19 Read article
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Cylindrical Bending of Shear Flexible Plates Using Trigonometric Shear Deformation Theory
Abstract: A trigonometric shear deformation theory for cylindrical bending of shear flexible plates taking into account transverse shear deformation effect is developed. The displacement field of the theory uses sinusoidal function in terms of thickness coordinate to include shear deformation effects. It has only two variables. It is to be noted that the present theory satisfies the constitutive relations in respect of transverse shear strain and stress. The transverse shear stress …
Published in Journal of Experimental & Applied Mechanics · Vol. 3, Issue 2-3, 2012 · pp. 1–11 Read article
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Electronic Circuitry and Material Integration for Enhanced Gas Detection Windows
Abstract: Liquefied Petroleum Gas (LPG) and propane, being flammable mixtures of hydrocarbon gases, are widely used as fuel in various applications such as homes, hostels, and industries. Our main objective for this project is to design and fabricate a gas sensing window that will autonomously open upon detecting any leakage of gases like LPG, CO2, alcohol, propane, etc. The heart of our system is the MQ-9 gas sensor, known for its …
Published in Journal of Microelectronics and Solid State Devices · Vol. 11, Issue 3, 2024 · pp. 14–24 Read article
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Thermal and Morphological Characterization of Rice Starch–Charcoal Composites for Eco-Friendly Engineering Applications
Abstract: This work focuses on the development and evaluation of rice starch–charcoal–based composite materials to overcome the limitations of natural composites with low thermal properties. In order to examine the impact of filler concentration on thermal and structural performance, eight composite specimens were created by altering the ratios of rice starch and charcoal. TGA, DTA, AFM, SEM, and measurements of thermal conductivity and effusivity were used to thoroughly characterize the composites. …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1286–1297 Read article
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Parametric Studies of In-house Resin for Hardness Removal
Abstract: Presence of high amount of calcium and/or magnesium makes the water hard as these ions in water react with other chemical agents and constituents of metallic plumbing etc. The process accelerates in the presence of heat. It decreases the efficiency of the unit operation due to the formation of scales. Hence, scaling is the main issue for which hard water is required to be treated or polished. De-mineralized water finds …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 3, 2014 · pp. 34–39 Read article
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Development of Electrochemical Discharge Machine for Machining Non-conductive Materials
Abstract: Electrochemical discharge machining (ECDM) is the hybrid machining process combination of electrodischarge machining and electrochemical machining process. ECDM is different machining process for micro-drilling and micro-grooving of variety of glasses, ceramics and composites. Electrochemical discharge machining also called as spark assisted chemical engraving (SACE). ECDM process is an effective and micro-machining process for non-conductive materials. It is used in micro-electromechanical system (MEMS) applications. ECDM parameters are material removing rate (MRR), …
Published in Trends in Machine design · Vol. 6, Issue 3, 2019 · pp. 18–22 Read article
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Adsorption of Lead Ions on Tea Waste Adsorbent
Abstract: Abstract In 2015 Indian Prime Minister Shri Narendra Modi focused more on clean and green India. On behalf of it an effective tea waste collected from Hotel Rudrapratap Tomar Purani Chhawani, Gwalior, MP, India. This hotel generated tea waste of 10000 kg per month. In Nov 2015 it generated tea waste of about 29000 kg which created tremendous problems, particularly by environmental pollution control board. Characterization of the adsorbents showed …
Published in Journal of Water Pollution & Purification Research · Vol. 3, Issue 1, 2016 · pp. 1–5 Read article
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Adsorption of Congo Red Dye by Using Poly(2-Chloroaniline-co-2-Methoxyaniline)
Abstract: ABSTRACTThe removal of this dye from the industry waste water is environmentally significant. In the present work the adsorbent, poly(2-chloroaniline-co-2-methoxyaniline) was employed to remove congo red dye from water. Batch experiments were conducted to study the effects of parameters such as concentration, contact time, amount of the adsorbent dose and pH. The result showed that the dye was removed when pH = 7.5-8 and contact time is 60 minutes and …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 3, 2019 · pp. 9–18 Read article
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Estimation of the Total Phenol Contents of the Stem of the Anogeissus pendula
Abstract: Plants are the greatest gift to human kinds; they are the sources of various kinds of metabolites of known as well as unknown composition. Secondary metabolites are the compounds which are non-nutrient and are rich sources of other activity in the plants. Plant phenolics are the compounds which have phenyl ring in them in addition to two or more hydroxyl rings; they perform variety of function in plants such as …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 5, Issue 3, 2018 · pp. 5–7 Read article
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Enhancing Radiographic Dental Image Visualisation with Colourisation and Graphical User
Abstract: Radiography has been used in dentistry to find cavities, bone loss, hidden dental structures, tumour, and cysts. Due to the monochromatic characteristic of X-ray images, it is difficult to discern disorders and explain the diagnosis procedure. Enhance the visualization of X-rays is one of the ways to ease the work of the dentist. There were several studies to enhance visualization by giving pseudo colour shades to monochromatic images. The conclusion …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 7, Issue 2, 2020 · pp. 7–19 Read article
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Malware Detection Using Data Mining
Abstract: In the digital world, everything is getting digitalized. Mobile devices, such as smartphones and handsets, are becoming increasingly popular, increasing criminals' appeal as targets for mobile malware. Consequently, in order to properly identify mobile malware, an antimalware detector plays a significant role. Prior to this, we concentrated on developing a behavioural analysis based on an ontology. To learn more about mobile malware, to assist end users in using their mobile …
Published in Journal of Advances in Shell Programming · Vol. 9, Issue 3, 2022 · pp. 9–13 Read article
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Study of Alternative Refrigerants and Refrigeration as Air Conditioning Sector in Mauritius: A Review
Abstract: Theoretical in this paper study on refrigeration framework intended for low temperature which has zero-ozone exhausting point better heat move trademark gives more prominent refrigerant impact. In this paper we concentrate on the primary capacity part like blower, evaporator, refrigerant, fan and engine, technical details of the parts. Energy is the essential and most all-inclusive method of all sorts of work by person and nature. Everything what occur on the …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 2, 2021 · pp. 33–36 Read article
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A review on micro hot embossed Fresnel lenses
Abstract: Background: Micro replication techniques like HE allows for the large-scale manufacturing of the micro components which use polymers like Polymethyle methacrylate, Polycarbonate, polystyrene as the work material. In the hot embossing process, key parameters include applied pressure, temperature during heating, duration of embossing, and temperature during demolding. Research Objectives: Developing straightforward and affordable methods to produce the micro featured molds needed for the hot embossing is a significant research goal. …
Published in Journal of Polymer & Composites · Vol. 12, Issue 8, 2024 · pp. 12–28 Read article
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Fresnel Lens with Advanced Fabricated Setup for Day Long Production of Hot Water
Abstract: AbstractThis work has been aimed to tap the solar energy source from Fresnel lens and utilize it to produce hot water or steam. The fabricated setup consists of a large spot Fresnel lens which concentrates the sun's rays into a 1 cm2 square spot onto a copper tube with temperature reaching up to 200°C. This concentrated heat is focussed on copper tube absorber to heat the water, the hot water …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 9, Issue 1, 2018 · pp. 15–19 Read article
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Study of Energy Recovery Method Using Pressure Exchanger Device for Various Capacities Reverse Osmosis Plants
Abstract: Water is required to produce energy, and energy is required to produce potable water by reverse osmosis process. An RO water desalination system consists of the pretreatment section, the desalination section, and the post treatment section. In the new design of plants, different energy recovery methods are adopted to reduce the energy consumption of desalination section. Among the various energy recovery systems, the pressure exchanger system is used to reduce …
Published in Journal of Experimental & Applied Mechanics · Vol. 8, Issue 1, 2017 · pp. 23–27 Read article
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Investigation of the Effects of Solpawa SBR-X TM Doses on Total Petroleum Hydrocarbon in Loam Soil at Different Depths
Abstract: Laboratory trials of environmental remediation products bring the hope of inventing such products to reality for many of today’s intractable environmental pollution conditions, paving the way for the field trials and subsequent large-scale field application. This laboratory study was conducted as the first phase of a 2-tiered adaptive trials of Solpawa® Bioremediation System (Solpawa-SBX) funded by the Nigerian Content Development and Monitoring Board (NCDMB). The study investigated the effectiveness of …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 64–72 Read article
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Optimizing Performance Characteristics, Thermal Stability, and Manufacturing Performance of Polymer Nanocomposites Using Artificial Intelligence
Abstract: Artificial intelligence (AI) has proven an efficient method to optimize the design and manufacture of polymer nanocomposites, allowing the proper prediction of the behavior of the materials and the results of the processing. This work proposes an AI-based framework to enhance the performance characteristics, thermal stability and manufacturing performance of advanced polymer nanocomposites. The input variables of the proposed framework are the material composition, the nanoparticle concentration, the particle size, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Management of Nigeria’s Educational System: Problems and Prospects for National Development
Abstract: The aim of this paper is to discuss the type of education introduced by the colonialists, which encourages brain-drain, human capital flight and underdevelopment. The paper gives a brief on the indigenous African education which is considered outstanding because of its harmony with the socio-economic and political life of the society both in material and spiritual sense. The paper traces the root of the present Nigerian type of education to …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 4, Issue 1, 2014 · pp. 27–38 Read article