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962 articles for “masses”
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Experimental Analysis of a Novel Parabolic Trough Receiver for Direct Steam Generation
Abstract: Abstract In this paper, experimental study of a parabolic trough collector and novel receiver with concentric tubes (C-PTR) for direct steam generation is presented. The performance of the C-PTR system is extensively studied by varying the parameters such as the direct normal irradiance, the mass flow rate, the type of circulation and the amount of phase change material (PCM). The maximum thermal efficiency achieved using C-PTR is averaged about 58% …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 1, 2016 · pp. 35–40 Read article
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Comparative Analysis of Vapour Compression Mini Ice Cream Plant by Using Different Size Capillary Tubes
Abstract: Abstract An experimental set up is made for comparative analysis of vapour compression mini ice cream plant by applying different size capillary tubes. The experiments were performed and results were recorded for comparing the best unit. The capillary tube was formed in coil shape having different inner diameters such as 0.79 and 1.12 mm. The pressure at suction and discharge of capillary were recorded to evaluate the cycle COP, power …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 3, 2016 · pp. 30–34 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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Temperature-Programmed Reduction Studies on Fe-promoted Pt/Al2O3 Bimetallic Catalysts
Abstract: Pt/Al2O3-based bimetallic catalysts were prepared using surface organometallic method (SOMC) to obtain catalysts with a nominal promoter to platinum surface atomic ratio of 1:2 and 1:1 (corresponding to typically 0.2–0.4 mass% of the promoting metals; here Fe). Temperature-programmed reduction (TPR) studies showed two distinct temperature regions of hydrogen uptake during reduction by the parent Pt/Al2O3 (5 mass%) and the Fe-promoted catalysts. The shift in peak maxima in the case of …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 2, Issue 2, 2011 · pp. 24–31 Read article
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Fabrication Fault Diagnosis of Bracket for Air Borne Vehicle Using Experimental and Analytical Modal Analysis
Abstract: This paper presents the experimental and analytical modal analysis of bracket structures made of two different materials. Manual inspection of fabricated components may at-times tend to be much tedious and less economical approach in identifying any geometrical and dimensional flaws when the quantity is more and may also result in failure, particularly when the purpose for which the components are designed or fabricated is very sensitive and crucial. Effective methodology …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 19–29 Read article
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Investigation on the Efficacy of Leaf Extract of Goat Weed, Ageratum conyzoides on NR Biophysiological Characteristics of Black Gram Vigna mungo Infected with Root–Knot Nematode Meloidogyne incognita
Abstract: Root-knot nematodes, Meloidogyne sp. are economically important plant pathogens affecting root system that can be managed by cultural practices, chemical nematicides and resistant cultivars. Use of nematicides for the management of root knot nematodes are being restricted due to environmental and human health concerns in addition nematicides often do not provide long term suppression of the pathogens. Therefore, there is a need to develop alternate ecofriendly management strategies for the …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 4, Issue 1, 2014 · pp. 5–9 Read article
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Signatures of Increasing Energy Demand of Past Two Decades as Captured in Rain Water Composition and Airmass Trajectory Analysis at Delhi (India)
Abstract: This study reports chemical characteristics of rain water in Delhi during monsoon (2010–11) with a comparison to earlier reported values of 1994. The results showed that non-marine sources had significant influence on rain water composition. The pH of the samples varied from 5.24 to 7.48 with an average value of 6.52 showing an alkaline nature of rain water. However, the dominance of NO3− over SO42− indicated higher influence of vehicular …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 4, Issue 3, 2014 · pp. 43–61 Read article
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Slope Stability At The Juncture Of Dredged Berth Pocket & Reclaimed Earth Embankment During Turbulence Caused by Rotation of Ship’s Propeller
Abstract: For accepting vessels with large drafted deepening of the berth pocket at any jetty is necessary by dredging. During berthing of ships, the bed soil particles in berth pocket gets eroded due to critical velocity, due to turbulence of the sea water in the pocket, caused by propeller’s motion and also due to eddies formed during trimming of vessel. Such disturbances in bed soil particles and the energy in the …
Published in Journal of Offshore Structure and Technology · Vol. 10, Issue 1, 2023 · pp. 35–40 Read article
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Modeling and Control of Various Drive Train Models of DFIG Wind Turbine
Abstract: The wind energy system (WES) has been gaining popularity in recent years for the reason of its resourcefulness and intrinsic reproducibility. Power quality and transient stability are major issues of WES under the influence of fluctuating wind speeds and network outages. The study focuses primarily on the various drive train models for the DFIG wind turbine, as well as torsional oscillations produced fluctuations in wind speed. The pitch-damping control is …
Published in Journal of Aerospace Engineering & Technology · Vol. 13, Issue 2, 2023 · pp. 1–10 Read article
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Coastal Tourism and Environment Issues of Concern and Sustainability: A Case Study in Digha, West Bengal, India
Abstract: Coastal tourism is always an attractive tourist destination and has increased the economic growth. However, the coastal areas are now exposed to deterioration due to lack of balance between tourism activities and natural environmental actions. Development of sustainable ecotourism practices is the only way to solve the problem. Creating public awareness regarding the adverse consequences of unplanned mass tourism activities in the region is the paramount step toward achieving sustainability. …
Published in Journal of Water Pollution & Purification Research · Vol. 7, Issue 3, 2020 · pp. 6–12 Read article
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Impact of Mercuric Iodide on the Growth of Phormidium spp.
Abstract: Cyanobacteria are microalgae which are freely distributed in aquatic environment. They are photosynthetic organisms and can fix atmospheric nitrogen under anerobic condition. Such cyanobacteria have been applied as a nitrogen fertilizer in agriculture to improve the crop yield. Since the application of chemical fertilizers in crop fields created heavy metal pollution which could be neutralized by microalgae under aquatic environment. They have ability to tolerate the heavy metal concentrations under …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 12, Issue 2, 2022 · pp. 1–6 Read article
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Understanding the Process and Delivery of MOOC and E-Learning: A Case Study of MOOCs on SWAYAM Platform in India
Abstract: Online learning is one of the new measures taken by the Indian government. To bring large number of population on a new platform of learning through innovative pedagogy is changing the future of education scene in India. This empowers both the learner and the teacher through blended learning with interactive pedagogical tools. Education in digital platforms has become collective and collaborative learning practices to make it less oppressive, where the …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 8, Issue 2, 2018 · pp. 18–24 Read article
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Production of Bioethanol from Agro-food Waste (Potato Peel) with the Aid of NPK Fertilizer and Moringa Leaf as Activators
Abstract: In this work, the production of ethanol with the aid of activators was investigated. Two-step hydrolysis of sweet potato peel was studied. Acid hydrolysis was carried out using dilute sulphuric acid, while enzyme hydrolysis was studied using Aspergillus niger inoculum. The effect of activators on ethanol yield was also investigated. Saccharification was studied using aspergillus niger which is a starch degrading organism to generate convertible sugar. Fermentation was carried out …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 14, Issue 1, 2023 · pp. 29–39 Read article
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Dry Matter Partitioning in Four Potato Varieties
Abstract: AbstractAn experiment was conducted at the research field of the department of horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, during the potato growing season of 2013–14 with four potato varieties viz. Asterix, Cardinal, Diamant and Granola to study the pattern of partitioning dry matter at different days after planting (DAP). Results revealed that at 30 DAP; maximum dry mass was partitioned to leaves and minimum to tubers, in all …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 6, Issue 2, 2017 · pp. 1–8 Read article
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Phytoconstituents of Ziziphus nummularia (Burm. f.) Wight & Arn. Leaves Extracts Using GC-MS Spectroscopy
Abstract: The genus Ziziphus (Rhamnaceae) species are examples of multipurpose plants with great potential for ethnomedicinal use. The analysis and extraction of plant material play an important role in the development, modernization and quality control of herbal formulations. Gas chromatography and Mass spectroscopy (GC-MS) techniques have become a sophisticated means for analysis of various compounds. The phytoconstituents from n-hexane and 70% ethanol leaves extracts of Ziziphus nummularia (Burm. f.) Wight & …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 9, Issue 1, 2019 · pp. 109–118 Read article
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The Mysterious Domination of Food Contaminants and Adulterants in Bangladesh
Abstract: Food adulteration and contamination are as old as the civilization itself. It is the consequence of the development of civilization, over utilization of nature, industrialization and in fact a price for the progress. It is highly prominent in urban areas of Bangladesh. It is the consequence of commercialism of business people who are doing this knowingly to maximize profit. People with higher educational background show higher degree of awareness of …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 7, Issue 3, 2018 · pp. 28–39 Read article
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Free Vibration of Cross-ply Composite Plates by a High-Order Shear Deformable Finite Element
Abstract: AbstractFree vibration analysis of composite rectangular plates with different thickness ratios, different boundary conditions and different aspect ratios has been investigated using a high-order shear flexible triangular plate element. The first order shear deformation theory (FOSDT) is used to include the effect of transverse shear deformation. The element has eighteen nodes on the sides and seven internal nodes. Element geometry is expressed in terms of three linear shape functions of …
Published in Research & Reviews : Journal of Physics · Vol. 5, Issue 3, 2016 · pp. 36–47 Read article
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Evaluation of the Growth and Biomass Production of Eight Commercially Important Microalgae Species Isolated from Lake Tana, Ethiopia
Abstract: Microalgae are a diverse group of photosynthetic microorganisms that can be cultivated in a controlled condition for different economic and environmental applications. This study aimed to evaluate the growth and biomass productivity of some selected microalgae species isolated from Lake Tana (Ethiopia) in a laboratory suitable for mass cultivation. The study was conducted from February (2020) to January (2021). C-media was used for cultivation at an incubation condition of 2500 …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 12, Issue 3, 2022 · pp. 13–21 Read article
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Surgical Management of Rectal Leiomyoma in a Buffalo
Abstract: A graded Murrah she buffalo with a prolapsed mass at the anal region was diagnosed to have a rectal tumor. Physical examination of the condition aided in diagnosis. The condition was managed by surgical excision and the mass was confirmed as leiomyoma by histopathological studies. No postoperative complications were recorded. The clinical findings, surgical management and outcome of the cases were discussed. Keywords: Leiomyoma, buffalo, rectum, surgical excisionCite this Article …
Published in Research and Reviews : Journal of Veterinary Science and Technology · Vol. 6, Issue 3, 2017 · pp. 9–11 Read article
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Surgical Management of Congenital Lipoma in a Calf
Abstract: A 9 month old female non-descriptive buffalo calf with an extensive mass on lateral aspect of face was diagnosed to have a congenital lipoma and was managed by surgical excision. Physical examination, radiography and ultrasonography aided in differential diagnosis of the tumor mass. No postoperative complications were reported. Keywords: Congenital lipoma, calf, surgical excisionCite this ArticleRavi Kumar P, Devi Prasad V, Sailaja B. Surgical Management of Congenital Lipoma in a …
Published in Research and Reviews : Journal of Veterinary Science and Technology · Vol. 6, Issue 2, 2017 · pp. 26–28 Read article