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1929 articles for “8-10nm size” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Experimental Investigation of Hematite Fines Reduction to Magnetite with Coal and Coke Fines
Abstract: In this current investigation, we aimed to comprehensively examine how various key processing parameters influence the reduction of hematite particles enveloped by coal and coke fines. This reduction process took place in an externally heated cylindrical steel container, which we will call the "work tube." This work tube had a diameter of 70 mm and a height of 300 mm and was situated within a pot furnace. For the experimentation, …
Published in Journal of Materials & Metallurgical Engineering · Vol. 13, Issue 2, 2023 · pp. 1–9 Read article
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Modeling and Optimization of Continuous Gas Lift Performance in Libya Oil Field
Abstract: With a massive number of oil and gas field becoming mature, the upstream engineering is facing new challenge. How to develop , or at least steady production while keeping obtainable reserves at their existing level, As matter of fact unstable production in gas lift wells. The Key issues most operators encounter with oil fields are the effects of high water production that may lead to wells died and decrease in …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 40–48 Read article
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Characterization and Stability Analysis of Crude Oil-in-Water Emulsions
Abstract: AbstractProduced water in the form of oil-in-water emulsion is the largest waste stream generated during the oil and gas production. Characterizations of oil-in-water emulsion in terms of stability study with respect to oil droplet size distribution, oil content, total dissolved solids, salinity with respect to time and rheological property have been investigated in the present work. Particle size distributions of freshly prepared oil-in-water emulsion of different crude oil concentration and …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 1–10 Read article
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A Case Study on Performance of Financial Institution in Funding SMEs and Challenges Ahead in India for SMEs
Abstract: Small and medium-size enterprises (SMEs) have long been recognized as one of the corner stones of a country’s development. It is thus, important to understand what contributes to their success as well as the difficulties they face. Surveys have shown that the lack of available financing from financial institutions is one of the biggest problems facing small businesses today. In this paper, we try to identify the aspects of obtaining …
Published in Journal of Production Research & Management · Vol. 6, Issue 2, 2016 · pp. 64–70 Read article
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Cutting Tool for Accurate Cutting of PVC Pipes
Abstract: An abstract describing a PVC pipe cutting tool based on Nichrome 80 wire is provided. The cutting tool consists of a frame, a handle, and a high-resistance nichrome 80 cutting wire that generates heat when an electrical current passes through it. The wire is mounted between two fixed posts on the frame and is powered by a battery-operated electrical source. All the user has to do is hold the handle …
Published in Trends in Machine design · Vol. 10, Issue 3, 2023 · pp. 17–28 Read article
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Structural Design of Offshore Structures: A Review of Indian and International Standards
Abstract: Offshore structures—including fixed steel jackets, topside modules, offshore wind turbine support structures, and floating systems—are designed to withstand combined gravity, environmental, seismic, and operational loads under substantial uncertainty and limited access for inspection and repair. Structural design practice has historically relied on internationally recognized standards, particularly the American Petroleum Institute’s API RP 2A, the International Organization for Standardization’s ISO 19900 series, including ISO 19902 for fixed steel structures, and Det …
Published in Journal of Offshore Structure and Technology · Vol. 13, Issue 13, 2026 · pp. 36–51 Read article
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A Machine Vision Approach for Grading of Onions
Abstract: Grading of fruits and vegetables (on the basis of various external and internal quality attributes) is an important unit operation in the food industry. For products such as onions, grading is performed mainly on the basis of size. In the present study, a machine vision system was used to grade onions into three categories (extra-large, medium and small) based on variations in size. The machine vision system consisted of a …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 1, Issue 2, 2014 · pp. 11–14 Read article
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A Comparative Study of Wireless Local Area Network and Wireless Personal Area Network Technologies
Abstract: AbstractIn this paper, authors have provided a survey of recent and emerging wireless network technologies available today. This paper presents different Wireless Local Area Network (WLAN) technologies, several IEEE 802.11 amendments along with IEEE 802.11 logical architecture and topology mode. IEEE 802.11ax, a new standard to provide required performance in dense High Efficiency WLANs (HEWs) deployment scenarios is presented. Finally, overview of different Wireless Personal Area Network (WPAN) technologies along …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 4, Issue 2, 2017 · pp. 15–24 Read article
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Implementation of Loss Discrimination Algorithm Using Machine Learning Approach for Wireless TCP Enhancement
Abstract: AbstractIn wired network packet losses are due to network congestion whereas in wireless network, it can be due to variable bandwidth, network topology, host mobility, network error etc. Transmission Control Protocol (TCP) is used to handle wired and wireless network. This conventional TCP consider any loss as congestion loss whatever may be the reason behind loss and to control the loss it simply reduces the congestion window size (Cw) which …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 7, Issue 3, 2020 · pp. 35–38 Read article
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Binary Shape Segmentation and Classification using Coordination Number (CN)*
Abstract: We proposed a novel, micro-structures, shape-preserving local descriptor for contour-segmentation- based binary object classification and recognition, named local coordination number count (LCNC). In this method, we formulate the problem by estimating the 8-neighbourof each binary object pixel. In the matching stage, we used Euclidean distance between eigenvalues corresponding to correlation coefficient and the dynamic programming to find out the optimal correspondence between boundary smoothness of two shapes. Experimental results obtained …
Published in Research & Reviews: Discrete Mathematical Structures · Vol. 8, Issue 1, 2021 · pp. 22–30 Read article
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Gold Nanoparticles: Preparation, Characterization and Its Stability in Buffer
Abstract: Among the colorimetric detection tactics, metallic nanoparticle based detection is gaining more attention due to quickness and less resource requirement at the point of use. Unique chemical inertness, shape, size and optical attributes of gold nanoparticles (GNPs) make them ideal for various diagnostic tools. In this approach synthesized GNPs were stabilized by citrate counter ions. These GNPs were characterized for their optical properties, shape, size, zeta potential, and dynamic light …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 17, Issue 1, 2015 · pp. 1–10 Read article
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Sol-Gel Auto-Combustion Synthesis and LPG Sensing Performance of Mg(x) Fe(x-1)2O4 (X=0.1 to 0.9) Nanoparticles
Abstract: Spinal ferrites are having important electronic materials because of their electrical and magnetic properties. MgFe2O4 gas sensors have important parameters such as phase formation, crystallite size, particle size, grain size, surface area etc. The present work provides comprehensive study of the mesoporous Mg(x)Fe(x-1)2O4 nanoparticles which were synthesized via sol-gel auto-combustion method. The main objective of the current research is to study the influence by increasing the concentration of ferrite with …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 19, Issue 1, 2017 · pp. 48–58 Read article
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Tracer Application in Study of Reaction Kinetics using Duolite ARA-9366B and Duolite A-638
Abstract: Radiotracer isotopes 131I and 82Br were used to study the iodide and bromide ion-isotopic exchange reactions taking place in two anion exchange resins Duolite ARA-9366B (nuclear grade) and Duolite A-638 (non-nuclear grade) under different operational parameters like temperature and ionic concentration of exchanging medium. The results of present investigation indicate an existence of strong positive linear co-relationship between amount of ions exchanged and concentration of ionic solution; while existence of …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 5, Issue 1, 2014 · pp. 34–44 Read article
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The MEA Evolution in Commercial Aircraft and the Consequences for Initial Aircraft Design
Abstract: An important objective in commercial aircraft design is to develop a ’greener’ aircraft. This objective poses many challenges in many fields of aircraft design. The push towards a more environment friendly, efficient and cost effective design has recognized the ‘MEA (more-electric aircraft)’ as a means to contribute towards realizing this goal. The more-electric aircraft can be thought of as an evolutionary concept where non-electrically powered systems and components are gradually …
Published in Journal of Aerospace Engineering & Technology · Vol. 3, Issue 1, 2013 · pp. 1–15 Read article
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Simple Hydrothermal Synthesis and Morphological Study of Magnetic Nanoparticles
Abstract: Magnetite (Fe3O4) nanoparticles were synthesized using FeCl3•6H2O or FeCl2•4H2O with 5 or 8 mmol concentration and 3 or 5 h incubation time with the constant pH (7.5) by simple hydrothermal decomposition and then transferred them into maghemite (γ-Fe2O3) and hematite (α-Fe2O3). Precisely, the objectives of the study were to evaluate the influences of salt type, its concentration and incubation time on the morphology of the as-synthesized magnetic nanoparticles. Synthesized nanoparticles …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 4, Issue 2, 2014 · pp. 14–22 Read article
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Microbial Synthesis of ZnO Nanoparticles by Yeast: Sacchromyces cerevisiae
Abstract: This study outlines, low-cost, green and reproducible eukaryotic microbe yeast (Sacchromyces cerevisiae)-mediated biosynthesis of ZnO nanoparticles. Synthesis was performed by four different steps namely, isolation, treatment, transformation and extraction. Different characterization techniques were used to test the nature of nanoparticle—crystallite size and shape by X-ray diffraction, morphology by scanning electron microscope (SEM) and particle size by particle analyzer. ZnO nanoparticles were characterized in order to study different properties of the …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 2, 2015 · pp. 1–5 Read article
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Non-destructive Application of Tracer Isotopes to Study the Kinetics of Iodide and Bromide Ion-isotopic Exchange Reactions in Anion Exchange Resins Indion-103 and Duolite A-611
Abstract: The present study is concerned with non-destructive application of radio-analytical technique for characterization of industrial grade ion exchange resins Indion-103 and Duolite A-611. The radioactive tracer isotopes 131I and 82Br were used to trace the kinetics of iodide and bromide ion-isotopic exchange reactions taking place in the two resins. It was observed that during bromide and iodide ion-isotopic exchange reactions, under identical experimental conditions of temperature remaining constant at 40 …
Published in Journal of Nuclear Engineering & Technology · Vol. 3, Issue 2, 2013 · pp. 14–24 Read article
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Nondestructive Technique in Study of Purolite NRW-5010 and Duolite A-638 Anion Exchange Resins
Abstract: The present paper is one of the interesting applications of radioactive isotopes in nondestructive technique for performance evaluation of anion exchange resins Purolite NRW-5010 and Duolite A-638. The radioactive isotopes 131I and 82Br were used to trace the kinetics of ion-isotopic exchange reactions taking place between the resin surface and external ionic solution. It was observed that for bromide ion-isotopic exchange reaction at 35.0°C, when the concentration of bromide ions …
Published in Journal of Nuclear Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 1–11 Read article
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Thermodynamic Concept to Evaluate the Performance of Organic Base Ion Exchange Resins Purolite NRW-5050 and Indion-870 Using Short-Lived Radioisotopes
Abstract: The present paper deals with application of short-lived radiotracer isotopes to understand the performance of Purolite NRW-5050 (nuclear grade) and Indion-870 (non-nuclear grade) anion exchange resins. The performance evaluation was done based on thermodynamics of iodide and bromide ion-isotopic exchange reactions. It was observed that for Purolite NRW-5050 resins during the bromide ion-isotopic exchange reaction, the enthalpy and energy of activation values calculated were 3287.8 and 5869.3 J.mol-1 respectively, which …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 8–19 Read article
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Compaction Characteristics of Sawdust, Cotton Stalks, Maize Straw and Rice Straw Briquettes
Abstract: Most of the developing countries are generating large amounts of agricultural waste but they are used ineffectively causing to pollute the environment. The main agro-wastes are rice straw, cotton stalks, and maize straw in addition to this biomass milling residue is also available in huge quantity. Apart from the problems of storage, handling, transportation, direct burning of loose biomass in conventional grates is associated with very low thermal efficiency and …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 5, Issue 1, 2015 · pp. 25–33 Read article