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1173 articles for “investments”
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Investigation of Thrust Bearing High Temperature in Gas Turbine
Abstract: Gas turbines in electric power generation and various industrial applications has made remarkable improvement in the current scenario in terms of size, efficiency and prominence. In order to maintain the sustainability of high level performance and increased reliability of the gas turbine, it has become mandatory to carryout in depth diagnostic methods and frame maintenance plans. This paper mainly concentrates on the analysis of the repeated tripping of gas turbine …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 3, Issue 1, 2017 · pp. 1–13 Read article
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Experimental Investigation on Performance of Solar Air Heaters With Thermal Storage
Abstract: Solar air heaters are used for applications at low and moderate temperatures such as; crop drying, timber seasoning, and space heating. The present research focused on a forced convection flat plate solar air heater with heat storage system under the climatic conditions of India – Mangalore for hot summer days of April 2015. In this work, attempt has been made to draw a comparison between the collector efficiencies for flat …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 5, Issue 1, 2019 · pp. 37–46 Read article
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Performance Investigation of Single Sloped Solar Still Using Sand Beds
Abstract: Although more than 2-3rd of the earth is covered with water were less than 1% of it (freshwater) is in humans, plants & animals reach for their survival. The demand in fresh water for drinking, agriculture & industry largely exceeds the amount that fresh sources can meet. Access to safe/fresh water is a challenge in many communities in developing countries. Among the available purification technologies solar powered distillation system has …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 1, 2020 · pp. 30–40 Read article
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Investigation of Mild Steel Corrosion by Clay Soil Environment
Abstract: This research work was carried out to observe the microbiologically induced corrosion in relation to mild steel of clay soil environments. We analyzed the physicochemical parameters and ascertained their biological features and impacts in the soil environment. In course of this research work, clay soil samples were collected in exactly four different locations at 100 m to 200 m and mixed together to form a single sample (sample D). The …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 2, 2022 · pp. 54–63 Read article
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A Review on Experimental Investigation of Fibre Reinforced Metakaolin-Based Geopolymer Concrete
Abstract: The development of new binders, as an alternative to Portland cement (PC), by alkaline activation, is a current researcher’s interest. As Concrete is the most commonly used material for construction. The worldwide production of cement has greatly increased after 1990. Production of cement results in a lot of environmental pollution as it involves the emission of CO2 gas. There are many ways to which we can reduce environmental pollution (carbon …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 44–55 Read article
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An Investigation on Aggregate Distribution in Concrete
Abstract: Falling behavior is generally studied by mathematicians. The first study is conducted by Comte de Buffon with name “Falling needles experiment” and is widely known. Buffon researched the falling needle behavior finding the fall of needles in relation with Pi. However, although aggregates are fallen to the mould in cement paste, falling behaviour of concrete is rarely studied considering the statistical parameters of the fall.Accordingly, an experimental study is conducted …
Published in International Journal of Concrete Technology · Vol. 7, Issue 2, 2021 · pp. 1–8 Read article
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Experimental Investigation of Concrete Properties for Strength and Durability with Partial Replacement of Mixture of Nano-Silica
Abstract: This study explores the effects of partial cement replacement with nano-silica on theproperties of concrete, focusing on both strength and durability aspects. Compressive strengthtests were conducted at two key ages, 7 days and 28 days, to evaluate the concrete's performanceunder various conditions. The nano-silica was introduced into the concrete mix at three differentpercentages: 0.3%, 0.6%, and 1% by weight of the cement content. Our experimental findingsindicated a remarkable enhancement in …
Published in International Journal of Concrete Technology · Vol. 9, Issue 2, 2023 · pp. 1–7 Read article
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Experimental Investigation On Replacement Of Fine Aggregate With Manufactured Sand And Partial Replacement Of Cement With Ggbs
Abstract: Concrete is the most widely used construction material in civil engineering industry because of its high structural strength and stability. The concrete industry is looking for supplementary cementitious material or industrial by product with the objective of reducing the carbon dioxide emission which is harmful to environment. Ground granulated blast furnace slag (GGBS) is the solid wastes generated by industry are used as a replacement material for cement. Manufactured sand …
Published in International Journal of Structural Engineering and Analysis · Vol. 4, Issue 2, 2018 · pp. 1–6 Read article
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An Investigation of Groundwater Quality In The Upper Ponnaiyar Watershed, Tamilnadu
Abstract: The study analyzes groundwater quality in the hard rock terrain of the upper Ponnaiyar watershed using statistical methods and chemical parameters. 27 water samples were collected from bore wells for pre monsoon and post monsoon periods and were tested for various parameters such as Electrical conductivity (EC), pH, Total dissolved solids (TDS), Total Hardness (TH), Sulphate (SO4), Chloride (Cl), Calcium (Ca), Iron (Fe), Fluoride and Manganese (Mn). The Water Quality …
Published in International Journal of Water Resources Engineering · Vol. 9, Issue 2, 2023 Read article
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Investigation and Classification of Cardiac MRI Images using Texture Analysis
Abstract: In order to quantify the myocardial viability after infarction, recent researches have developed new cardiac MRI protocol using particle contrast agents which highlight the different areas after infarction: i.e. the healthy area, the necrosed area and the two ischemic areas. Actually the researches are carried out on rodents micro cardiac MRI for which the obtained images are very noisy and present a very low contrast. In this paper, we analyse …
Published in International Journal of Image Processing and Pattern Recognition · Vol. 7, Issue 2, 2021 · pp. 37–41 Read article
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An Investigation on Performance Analysis of PV Inverters with Modified MPPT Technique and LUO Converter
Abstract: A rapid growth in technology has increased the demand for power. Hence to overcome the upgrowing power demand, solar energy system comes into existence. But, the power acquired from PV is very low. Hence to satisfy the desires of high voltage applications, many traditional DC/DC converters are originated. In this proposed work, ahigh gain Luo converter is employed to increase the voltage level of the PV system.
Published in International Journal of Microwave Engineering and Technology · Vol. 7, Issue 2, 2021 · pp. 8–19 Read article
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Investigation on Five Phase Inverter
Abstract: In this paper, Sinusoidal Pulse width modulation (SINE-PWM) and Space Vector Pulse width modulation (SVPWM) techniques are implemented in the five phase inverter. Space vector modulation is realized using min-max method. Both SINE-PWM and SVPWM techniques are tested in simulation and hardware set-up. Results are obtained satisfactorily and it confirms the features of both PWM techniques. Keywords: Five phase inverter, SINE-PWM, SVPWM
Published in International Journal of Power Electronics Controllers and Converters · Vol. 1, Issue 1, 2015 · pp. 7–20 Read article
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Investigations of Ruthenium an Energetic Material
Abstract: The energy of ruthenium catalyzed degradative oxidation of methylparaben by the copper complex, is researched at 30ºC and at an ionic strength of 60 × 10−3mol dm−3. In the presence of catalyst ruthenium(III), the reaction between methyl and diperiodatocuprate in aqueous alkaline medium exhibits 1:1 stoichiometry.
Published in International Journal of Energetic Materials · Vol. 2, Issue 1, 2016 · pp. 27–30 Read article
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Investigation of Effect of Clearance between Die and Punch in Deep Drawing Process
Abstract: Deep drawing is one of the significant manufacturing methods used to create automotive parts. The popular execution of process yields when product has minimum defects. Die design, punch nose radius, punch velocity, blank holder force and friction are the main parameters affecting product quality in deep drawing. Clearance between die and punch also plays an important role in deep drawing process. In this research article clearance has been varied from …
Published in International Journal of Metallurgy and Alloys · Vol. 2, Issue 2, 2016 · pp. 1–5 Read article
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Investigation of Losses in Nanocrystalline Soft Magnetic Nanomaterials - Review
Abstract: The dependency of power loss on frequency and maximum induction in soft magnetic materials, is considered for loss prediction in nanocrystalline material Fe73,5Cu1Nb3Si13,5B9 in the range , .The proposed formula is derived from considerations on the Poynting theorem and takes into account multi-scale power loss dissipation in soft magnetic materials. It takes the form The knowledge of the scaling exponents in the abovementioned formula allows us to predict power loss …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 3, Issue 2, 2017 · pp. 20–25 Read article
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Effect of Abrasive Water Jet Machining Parameters—An Experimental Investigation
Abstract: Machining studies on the fiber reinforced polymer composites is vital requirement for the composites application in different fields. Particularly advanced machining techniques like abrasive water jet machining can be machined with higher accuracy and distortion free composites. In this work aims to study the abrasive machining parameters on the basalt fiber polymer composites. The woven basalt fiber reinforced polymer composites were prepared using hand layup techniques. The machining effect of …
Published in International Journal of Composite and Constituent Materials · Vol. 6, Issue 2, 2020 · pp. 21–23 Read article
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Experimental Investigation To Study the Effect of Heat Treatment on Mechanical Properties and Microstructure of Duplex Stainless Steel
Abstract: The broad aim of this paper is to study the enhancement in mechanical properties of duplex steel by thermomechanical processing. Solution annealing followed by water quenching, hot rolling to 10% and 30%, cryo-rolling to 80% and 90% and ageing at 600°C and 1000°C for 5 hrs were the treatments given. The cryo-rolled samples were used for impact testing and rest for tensile testing. Microstructural analysis was done after the various …
Published in International Journal of Mechanics and Design · Vol. 2, Issue 2, 2016 · pp. 32–42 Read article
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Review Study on Experimental Investigation of Heat Transfer Using Al2O3 and CuO Nanoparticles with Water as Base Fluid Through Circular Tube of Heat Exchangers
Abstract: A colloidal mixture of nanometric particles (<100 nm) in a base liquid called nanofluid, which is the new generation of heat transfer fluid for various heat transfer applications where the transport characteristics are substantially higher than the base liquid. This review summarizes and analyzes the empirical correlations for the effective thermal conductivity and the dynamic viscosity of the nanofluid on the basis of experimental data and the theoretical model available …
Published in International Journal of Mechanics and Design · Vol. 3, Issue 2, 2017 · pp. 17–23 Read article
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Experimental Investigation on Mechanical Failure of Bio-Implant Material for Orthopedic Applications
Abstract: Loss of limbs or destruction of bones in accidents and battle requires partial or complete replacement of the damaged body parts and bones in particular for complete recovery. The materials which can be used as artificial bio-implants for the replacement must be bio-Integrable as well as biocompatible with the host human body and possess very high mechanical properties to withstand high wear and stresses involved in various joints. Existing research …
Published in International Journal of Mechanics and Design · Vol. 6, Issue 1, 2020 · pp. 21–28 Read article
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Experimental Investigations for Reduction of Defects In MIG Welding Process
Abstract: An experimental analysis has been tested to understand the roll of process parameter of MIG welding on under frame assembly components. Three important process parameter like a current, voltage and rate of gas flow MIG Welding process were used to reduce the welding defects in under frame assembly components. Taguchi method approach has been adopted to identify the process parameter level to have reduced welding defects in under frame assembly …
Published in International Journal of Mechanics and Design · Vol. 8, Issue 2, 2022 · pp. 35–45 Read article