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1108 articles for “loss”
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Green Synthesis of Biologically Active 2, 4, 5- Trisubstituted Imidazoles Catalyzed by Large Pore Zeolite H-BEA through Lophine MCRs
Abstract: 2, 4, 5-triphenyl-1(H)-imidazoles (popularly known as Lophine derivatives) are well known heterocyclic compounds and find significant diversified applications, not only in the area of medicinal chemistry as biologically active drug-like molecules, but also in the other advanced research areas, such as fluorescence labelling, biological imaging and chromospheres for non-linear optic system. In the present endeavour, a green synthesis of Lophine derivatives via multi-component reaction is carried out using benzil/benzoin, substituted …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 3, 2017 · pp. 20–36 Read article
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BY USING FLYWHEEL TO PRODUCE ELECTRICITY WITH POWER MULTIPLICATION
Abstract: Electricity production using conventional methods consume lot of energy, utilize from the fuels and which in turn converted from one source of energy to another. To produce free energy experiments conducted on the perpetual motion states that it is practically impossible to run a machine on the perpetual motion 100 percent . Instead of pursuing on perpetual motion, when we support the perpetual motion with slight energy boost just before …
Published in Journal of Catalyst & Catalysis · Vol. 5, Issue 3, 2018 · pp. 5–7 Read article
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Synthesis of Isoamyl Acetate (Banana oil) Using Fly Ash Supported Nano Crystalline Solid Acid Catalyst
Abstract: A novel fly ash supported solid acid catalyst (HClO4/FA) has been synthesized by using F-type fly ash and HClO4 as precursor. The variation of surface and physicochemical properties of the fly ash by activation methods resulted in improved acidity and therefore, catalytic activity for acid catalyzed esterification reactions. The HClO4/FA catalyst was characterized by XRF, XRD, FT-IR, SEM and BET surface area. The catalytic performance of HClO4/FA catalyst was evaluated …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 2, 2017 · pp. 1–8 Read article
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Corrosion Inhibition of Mild Steel in Acidic Medium using Essential Oil of Clove (Syzygium aromaticum) as Inhibitor
Abstract: This research work deployed a weight loss technique in evaluating the feasibility and efficiency of using essential oil of clove as corrosion inhibitor due to its anti-oxidant properties. Prepared sample of mild steel was exposed to acidic medium in the absence of inhibitor and the corrosion rate was evaluated. Subsequently, other samples of the same mild steel were exposed to acidic environment in the presence of varied concentrations of the …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 1, 2017 · pp. 30–36 Read article
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Alcohol Oxidation in Ionic Liquids Catalysed by Recyclable Platinum Nanoparticles: A Green Approach
Abstract: The effect of particle size on the catalytic performance of materials in organic reactions is of scientific and industrial importance. In the present case we demonstrate the use of room temperature ionic liquids as effective agents of dispersion of platinum nanoparticles prepared from potassium tetrachloroplatinate. The platinum nanoparticles in the range 2.5±0.5 nm are recyclable catalysts for aerobic oxidation of alcohols under mild conditions. The particles suspended in ionic liquids …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 1, 2014 · pp. 15–22 Read article
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Review on Increasing the Kappa Reduction in Oxygen Delignification Stage at Pulp Mills
Abstract: The use of oxygen delignification in bleached kraft pulp mills to reduce the lignin content of pulp prior to final bleaching is increasing worldwide. However, oxygen treatments are normally limited to less than 50% lignin removal to avoid excessive loss of pulp strength potential. More selective oxygen delignification processes are required which can extend lignin removal beyond 50% while maintaining final pulp quality. Work reported here has shown that pulp …
Published in Journal of Catalyst & Catalysis · Vol. 6, Issue 3, 2019 · pp. 36–42 Read article
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Direct and rapid synthesis of amides from carboxylic acids under solvent free condition using Clay based Heterogeneous recyclable catalyst
Abstract: Direct condensation of Carboxylic Acids and Amines has resulted in a highly simple and practical technique for the synthesis of amides. Fe-Al clay catalyst was used in the solvent-free, microwave-irradiated amide synthesis. Only a small amount of the catalyst was needed to produce products in very short of time with a good yield. The catalyst was easy to separate and could be recycled several times with negligible loss of catalytic …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 2, 2023 · pp. 1–9 Read article
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Ranking the Factors Influencing the Selection of Formwork system by Relative Importance Index
Abstract: Formwork has relatively greater importance in concrete construction. The three major principles of project management are time, cost and quality. These three principles are affected heavily while choosing a particular formwork system for concrete construction. Choosing a formwork system is a critical decision that is made during the planning stage of Construction project. Major requirement of formwork is that it should produce a good quality finish, safety for formwork crew …
Published in Journal of Construction Engineering, Technology & Management · Vol. 8, Issue 2, 2018 · pp. 49–62 Read article
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Providing Sustainability in Educational Buildings Through the Use of Compressed Stabilized Interlocking Earth Blocks
Abstract: Buildings are important factors in achieving desirable outcomes in the educational sector hence; any inadequacy in building facilities represents a loss in value of the school, its users and stakeholders. It is therefore, necessary to provide not just a building but a sustainable one that will encourage the preservation of the natural environment, promotes social well-being of its users and provide reasonable economic stands for the investor. This research therefore, …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 2, 2016 · pp. 130–140 Read article
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Managerial Strategy for Controlling Hazards in Building Construction Projects
Abstract: The construction site is always associated with man power intensive and hazardous work environments. Even today, controlling/minimizing hazards at any construction site is a challenging task. Hazard is defined as an inherent property of a substance or an occurrence, which has the potential to cause loss of injury to property, person or environment. The different sources of hazard at construction site includes physical, chemical, biological, natural, electrical and radiant energy …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 1, 2016 · pp. 53–56 Read article
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Liquidated Damages: The Perception of The Construction Industry
Abstract: There are several misconceptions about the term “liquidated damages” (LD) as many believe it is a penalty levied for delay or breach of contract. However, in a key judgement in a court it was presumed that LD is a sum payable upon breach and must be a genuine pre-estimate of the loss the innocent party would suffer in respect of the breach. If the intention of the LD is to …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 3, 2015 · pp. 59–67 Read article
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Cost Objective Model for Construction Equipment Replacement Policies
Abstract: Most construction companies, particularly companies whose projects are primarily constructed with earthmoving equipment, depend heavily on their construction equipment fleets, which represent substantial locked capital investment and require acceptable utilization levels to recover expenses incurred and losses from this investment. The equipment, which possesses a finite physical and economic life, inevitably requires replacement, and equipment maintenance costs increase with the equipment life. Different methodologies are employed to establish the replacement …
Published in Journal of Construction Engineering, Technology & Management · Vol. 4, Issue 2, 2014 · pp. 1–13 Read article
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Influence of Recycled Coarse Aggregate on Properties of Concrete
Abstract: This study focuses on the influence of recycled coarse aggregate (RCA) on properties of concrete. Five different mixtures of RCA replacement comprising 0, 25, 50, 75 and 100% RCA were used. It was found that workability, saturated bulk density, compressive strength and flexural strength decreases with increase in RCA content in concrete. 100% manually RCA concrete passed the 17 kN/m2 compressive strength limit generally acceptable for concrete work of non-high …
Published in Journal of Construction Engineering, Technology & Management · Vol. 3, Issue 3, 2013 · pp. 45–53 Read article
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Experimental Study of Sulphate Attack on Steel Embedded in Reinforced Concrete
Abstract: Corrosion is one of the biggest problems of steel in reinforced concrete (RC) structure, whichdeteriorates the durability of concrete structure at a considerable rate. In this paper, we havestudied the corrosion density, corrosion rate, and resistivity to a solution of 0.78 N H2SO4withthe help of electrochemical process to a temperature range of 307–309±1 K by using SternGeary equation and Tafel slope on 12 and 8 mmφ bar. The current work …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 3, 2016 · pp. 25–34 Read article
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Comparative Study of Flat Slab and Conventional Slab Structure Based on Seismic Behaviour and Cost Effectiveness
Abstract: Flat slab recent earthquakes in which many concrete structures have been severely damaged or collapsed, have indicated the need for evaluating the seismic adequacy of buildings. About 60% of the land area of our country is susceptible to damaging levels of seismic hazard. We can’t avoid future earthquakes, but safe building construction practices can certainly reduce the extent of damage and loss. As being one of the special reinforced concrete …
Published in Journal of Construction Engineering, Technology & Management · Vol. 11, Issue 1, 2021 · pp. 45–49 Read article
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Comparison Of With Base Isolation And Without Base Isolation Building for G+15 High Rise Structures
Abstract: Reinforced concrete is a important construction material in civil engineering. This investigation serves as a case study to evaluate the ultimate capacity of the selected bearing system in reinforced concrete structures. The study aims to compare the performance between fixed base buildings and base isolated buildings. Specifically, the research focuses on assessing the appearance and ultimate capacity of the bearing system in both types of structures, aiming to provide insights …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 1, 2023 · pp. 28–34 Read article
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Generalized Rail Clamping Sequences Based PWM (GRCPWM) Algorithm for Direct Torque Controlled Induction Motor Drive
Abstract: The paper presents Rail Clamping Sequence based Pulse Width Modulation (RCPWM) algorithms applied to Direct Torque Control (DTC) of induction motor drive. This RCPWM based DTC retains all the advantages of conventional DTC (CDTC), moreover it eliminates the complexity involved in SVPWM algorithm and results in reduced current ripple at higher modulation indices and lowers the switching losses at all modulation indices. To validate the proposed method, simulation through MATLAB …
Published in Journal of Control & Instrumentation · Vol. 8, Issue 3, 2017 · pp. 38–59 Read article
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Faults Detection Techniques of Three Phase Induction Motor: A Review
Abstract: Induction motors are the most commonly used machines in industries. It is very robust, inexpensive and easy to maintain. Induction motors appear to various faults during their operation. Accurate fault identification is the prime industrial need to reduce breakdown, maintenance and revenue losses. Therefore, an early fault detection is needed for the protection of the motor against electrical and mechanical failures for continuing their operation safely. The main perspective of …
Published in Journal of Control & Instrumentation · Vol. 9, Issue 1, 2018 · pp. 45–49 Read article
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Modelling and H∞ Robust Control of a Neonatal Incubator
Abstract: This study presents the modelling of a neonatal incubator and the design of a robust H∞ controller. Neonates, who are born premature, often don’t have enough maturity to regulate their temperature. These infants have low metabolic heat production rate and may have high heat loss from the skin so they have an increased risk of death in the first week of their life. The core temperature of the human body …
Published in Journal of Control & Instrumentation · Vol. 9, Issue 3, 2018 · pp. 1–14 Read article
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Automated Control of Conveyor Belt in Industries using DTMF and Internet Operation
Abstract: Transportation of raw materials or any goods in industries is the need of the hour. As the technologies are invented and developed, a revolution has been observed in the industries in terms of the production and packaging. The conveyor belt system is reliable, robust and provides satisfactory results to the manufacturer. This system with such a huge and important advantage has a requirement that it needs to be supervised time …
Published in Journal of Control & Instrumentation · Vol. 8, Issue 1, 2017 · pp. 39–44 Read article