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1952 articles for “4-dioxopyrimidine-5-carbonitrile” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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CuO/TiO2 Nanocomposites: Effect of Calcination on Photocatalytic Hydrogen Production
Abstract: Hydrothermally synthesized TiO2 nanorods were subjected to calcination from 350 to 550 °C and tested their catalytic performance for hydrogen (H2) production in aqueous glycerol solution under solar irradiation. High rate of H2 evolution ca.300 µmol.h−1.g−1cat was recorded with TiO2 nanorods calcined at 500 °C. The nanocomposites were prepared by varying Cu-loading 0.1 to 2.0 wt% and activated at 350 or 500 °C. About 25 folds enhancement in H2 production …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 2, 2014 · pp. 13–20 Read article
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Production of liquid fuel from waste plastic using batch catalytic pyrolysis process
Abstract: Waste polystyrene from households and retailing shops are recognized to be the major sources of environmental problem. On the other hand, it represents a source of energy and valuable chemical products. Pyrolysis as a technique of chemical recycling of waste plastic is as an environmentally and economically acceptable option for converting waste plastics into useful resources. In this study, the operating conditions studied were; temperature was varied from 430 to …
Published in Journal of Catalyst & Catalysis · Vol. 6, Issue 2, 2019 · pp. 34–43 Read article
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Recovery of Liquid Hydrocarbon Fuels from Polypropylene Waste Plastics via Catalytic Pyrolysis
Abstract: Process of pyrolysis is a thermo-chemical method conducted at high temperatures and usually in presence of catalysts. Dissimilar type of natural and synthetic catalysts are used for alteration of organic wastes into cherished fuels. The aim of this work is conversion of waste production of liquid fuel using catalyst that produced from rice husk ash. Waste plastic was pyrolyzed at temperature range 430-470oC and obtained products were liquid fuel, gas …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 1, 2020 · pp. 33–48 Read article
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An Insight into the Production of Bioethanol from the Duckweed
Abstract: The ultimate goal of this study was provided an insight into the production of bioethanol from the duckweed. In this study three experimental parameters for maximizing bioethanol yield were investigated during the dilute acid hydrolysis; acid concentration (0.6-1M), temperature (80-120oC) and time (60-180minutes). The conversion of duckweed to bioethanol can be achieved mainly by four process step; the first step was pretreatment of duckweed to remove different contaminates, dried at …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 2, 2020 · pp. 48–56 Read article
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Preparation and Evaluation of Abaca and Pineapple Leaf Fiber Reinforced Hybrid Thermoplastic Composites
Abstract: Natural, biodegradable, and renewable materials are intended to take the place of synthetic ones in current research. Natural fiber composites are the subject of extensive research due to their special qualities and environmental friendliness. The fact that natural fibers are readily available, manageable, and biodegradable makes them advantageous. Evaluation of the changes in the mechanical properties of polypropylene reinforced with chopped pineapple leaf and abaca fiber is the objective of …
Published in Journal of Catalyst & Catalysis · Vol. 9, Issue 3, 2022 · pp. 15–26 Read article
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Effect of Ground Granulated Blast Furnace Slag as Partial Cement Replacement on Compressive Strength of Concrete
Abstract: AbstractThe main objective of this research work is to determine the optimum replacement percentageof GGBS which can be suitably used. To fulfill the objective, various properties of concreteusing GGBS have been evaluated. Mix design has been arrived for M25 concrete. Fineness,specific gravity (cement and GGBS), normal consistency, initial and final setting time andcompressive strength of cement have been found out. Particle size distribution, bulking of fineaggregate, specific gravity, water absorption …
Published in Journal of Construction Engineering, Technology & Management · Vol. 7, Issue 3, 2017 · pp. 1–10 Read article
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Geotechnical Assessment and Stabilisation of Lateritic Soils in Tarkwa Using Rice Husk Ash for Road Construction Purpose
Abstract: The cost effectiveness of upgrading gravel roads to a sealed standard has challenged road authorities to make optimum use of naturally occurring materials such as laterites as sub-base and base materials. Untreated laterites have presented problems such as pavement swelling and depression in road construction. This research seeks to assess and stabilise the geotechnical properties of some lateritic soils in Tarkwa using Rice Husk Ash for road construction purposes. Lateritic …
Published in Journal of Construction Engineering, Technology & Management · Vol. 9, Issue 1, 2019 · pp. 6–16 Read article
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Effect of Hooked-end Steel Fibre Incorporation in the Performance of Slag Based Geopolymeric Concrete Mixes
Abstract: In this study the efforts have been undertaken to evaluate the performance of slag based geopolymer concrete (GC) when hooked-end steel fibres have been incorporated in different percentages i.e. 0%, 0.5%, 1.0%, 1.5% and 2.0% to the mix. The alkaline activator used in this study was the dissolution of solid sodium hydroxide flakes in liquid state sodium silicate solution, dissolved in water. The compressive strength, split-tensile strength, shear strength and …
Published in Journal of Construction Engineering, Technology & Management · Vol. 10, Issue 2, 2020 · pp. 28–35 Read article
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Flood Resistant Houses
Abstract: Unusual high stage of river is called flood. In flood, the water level rises to an extent in which water starts spilling over the bank and spreading to the flood plains. The frequency and intensity of floods has intensified in the country over the years primarily due to encroachment of flood plains because of obvious advantages of water supply and irrigation. Flood causes extensive damage to infrastructure, the economy and …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 3, 2016 · pp. 54–56 Read article
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Finite Element Analysis and Validation of Axial Capacity of RC Columns Made of Steel Fiber Reinforced Concrete (SFRC)
Abstract: Steel Fiber Reinforced Concrete (SFRC) possesses many excellent dynamic performances such as; high resistance to explosion and penetration. It has little effect on pre-cracking behavior in uniaxial compression, but substantially enhances its post cracking response. This response leads to a greatly improved ductility and toughness. Steel fibers in SFRC are capable of preventing crack propagation as well as brittle failure of columns under uniaxial compression. To this end, four reinforced …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 2, 2015 · pp. 9–14 Read article
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Water Permeability of Hybrid Steel Fiber Reinforced Concrete
Abstract: Results of an investigation conducted to study the water permeability of (HySFRC) are presented. Steel fibers of different lengths, i.e., 12.5, 25 and 50 mm having constant diameter of 0.6 mm were systematically combined in different mix proportions to obtain mono, binary and ternary combinations corresponding to 0.5, 1.0 and 1.5% fiber volume fractions. A reference concrete mix containing no fibers was also cast for comparison purpose. A total number …
Published in Journal of Construction Engineering, Technology & Management · Vol. 4, Issue 2, 2014 · pp. 30–37 Read article
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Experimental Investigation of Mechanical Properties of Hybrid Fiber (Basalt and Steel) Reinforced Concrete
Abstract: The paper reports experimental investigations on hybrid-reinforced concrete. The proportion of basalt fiber and steel fiber was 50% respectively of the total fiber taken as sample. Effect of fiber on various strengths of concrete is studied. Fiber content varied from 0 to 4% at an interval of 1% by weight of cement. Various considerations for investigation are compressive strength, flexural strength, split tensile and bond strength. Cube of size 150 …
Published in Journal of Construction Engineering, Technology & Management · Vol. 3, Issue 2, 2013 · pp. 5–10 Read article
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Study of Behavior of Buckling Restrained Bearing Frame Along with Soil Structure Interaction
Abstract: Lateral forces due to earthquake are the major consideration for design of earthquake resisting structures, these forces can be resisted by various systems like braced frames, shear walls, moment frames, etc. Energy dissipation is one of the most convenient option for earthquake resistance, as it can absorb input energy from earthquake protecting the main structure. Past research revealed that the Buckling Restrained Braces (BRB) are the best type of energy …
Published in Journal of Construction Engineering, Technology & Management · Vol. 11, Issue 3, 2021 · pp. 36–42 Read article
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Experimental Investigation on the Strength of Concrete with Partial Replacement of Cement using GGBS and Alccofine
Abstract: Cement is the most important ingredient of concrete. A large scale production of cement consumes large amount of energy and produce a large amount of carbon dioxide (CO2) gas which harmful to human as well as environmental and natural resources. So, to avoid the effect to use industrial waste productions as a supplementary cementitious material (SCM) in making concrete i.e. silica fumes, rice husk ash, fly ash, metakaolin, alccofine, ground …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 1, 2023 · pp. 35–43 Read article
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Optimum Mixture Proportioning of Sawdust Ash Blended Sand-Stone Dust Blocks Using Scheffe’s Regression Theory
Abstract: This study carried out an experimental investigation on the compressive strength of sawdust ash blended sand-stone dust block of size 450 x 225 x 150 mm using Scheffe’s (5, 2) regression theory. The compressive strength of sawdust ash blended sand-stone dust blocks obtained based on fifteen trial mix ratios were used to develop the mathematical model while the results of the compressive strength values obtained based on the additional fifteen …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 2, 2023 · pp. 33–40 Read article
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Effect on Mechanical Properties of Concrete Using Industrial Waste
Abstract: Waste management is a great challenge for any country in current and future aspect. Solid waste generates from different industry i.e. stone, marble, coal, tire etc. are major issues in India. These wastes create major environmental & health problems for surrounding people. This study represents the utilization of waste kota stone slurry and marble powder as sand & cement replacing material with 15% fly ash of class-C. Waste kota stone …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 2, 2023 · pp. 19–25 Read article
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Experimental Investigations of Mass Flow Rate on Regression Rate of Hybrid Rocket
Abstract: A number of practical hybrid propulsion systems developed for booster and upper stage application,at different Centers across the globe. The regression rate of hybrid fuel plays an important role ondevelopment of viable hybrid propulsion system. In the present investigation an effort has been madeto study the regression rate behavior of PVC-DBP((C 2 H 3 Cl) n )-DBP(C 16 H 22 O 4 ) hybrid fuel burning inthe stream of gaseous …
Published in Journal of Experimental & Applied Mechanics · Vol. 12, Issue 2, 2021 · pp. 31–51 Read article
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Comparative Study of Linear Regression Techniques for Analyzing THPP of Solar Parabolic Trough Receiver with Twisted Tape Inserts using Machine Learning.
Abstract: This study presents a comparative analysis of four different linear regression techniques for predicting the THPP of a solar parabolic trough receiver with twisted tape inserts. The four techniques analyzed are: ordinary linear regression, interaction linear regression, robust linear regression, and stepwise linear regression. The study is aimed at determining the most suitable technique for predicting the heat transfer characteristics of the solar parabolic trough receiver with twisted tape inserts. …
Published in Journal of Experimental & Applied Mechanics · Vol. 13, Issue 3, 2022 · pp. 39–47 Read article
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Design and Development of a Multifunction FPGA-based Data Acquisition System using Nonlinear Duty-cycle Modulation Technique
Abstract: AbstractA new generation of DAQ based on duty-cycle modulation technique is presented. It describes the design and prototyping of a FPGA-based data acquisition and signal generation board using the duty-cycle modulation technique and with computer-based software interface. The system is built around the DE0-Nano development board that embeds an Altera cyclone IV FPGA in which a NIOS II processor running at 100 MHz has been instantiated. The conversion technique from …
Published in Journal of Electronic Design Technology · Vol. 10, Issue 3, 2019 · pp. 8–26 Read article
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Speed Control of Automobiles using Seat Belt
Abstract: AbstractAs according to the statistics of present situations there are many road accidents happening, and the reason for the cause is carelessness while driving. A survey report states that a total of 22,441 passengers died due to vehicle crash in 2015 as the occupants were unrestrained during the incident. In these statistics, greater than half were teenagers of 13-19 years (range between 52% and 59%) and the rest were adults …
Published in Journal of Electronic Design Technology · Vol. 11, Issue 1, 2020 · pp. 27–32 Read article