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371 articles for “heat”
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Life Origin on Earth, Knowledge Development
Abstract: An enigmatic and important feature of life origin on Earth is embodied with a number of different hypotheses and knowledge based on experimental data and biomedical principles. These hypotheses and understanding generally contain some small-scale experimental simulation, chemical structure comparisons and a series of guesswork from existing biological knowledge and principles. So far, there is no widely agreement of single hypothesis without significant arguments and conflicts between researchers of different …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 1, 2020 · pp. 24–28 Read article
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Overview on the Thermal Properties, Geometric Structure and Recycling Process of Thermoplastic Materials.
Abstract: This study is aim to discuss the thermal properties, geometric structure and recycling process of thermoplastic materials. Also, recycling is one of the most important actions currently available to reduce the negative impact on the environment and represent one of the most dynamic areas in plastics industry today. Thermal properties, geometric structure and recycling process of thermoplastic materials deals with the properties of thermoplastics which includes: it may melt before …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 2, 2020 · pp. 20–24 Read article
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Tetrahydro-dibenzo[a,d][7]annulene-5,11-dihydrazone and Magnesium oxide Used to Control the Corrosion of Aluminium in Chloride ions Environment
Abstract: Chloride ions interact with aluminium in marine atmosphere to form corrosion cell. Due to this corrosion reaction occurs on their surface, aluminium is oxidized into Al3+. The corrosion reaction accelerates deterioration in metal and it produces galvanic, pitting, stress, crevice, intergranular corrosion. Chloride ions decrease internal and external strength of aluminium metal. It is a very important metal so used in different appliances for e.g. road, water, air transports, housing, …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 2, 2020 · pp. 35–48 Read article
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Design of a Plug Flow Reactor for Production of Refrigerants from Natural Gas Chlorination
Abstract: The design of a plug flow reactor and distillation column for the production of refrigerants from natural gas chlorination, was aimed at achieving high purity volume percent of Methyl Chloride (CH3Cl) and Methylene Chloride as desired products. Aspen HYSYS software was used to simulate the reactor. The reaction was carried out at a temperature of 3000C and 1atm Pressure, Methane to Chlorine ratio was set at 1.5:1 to favour the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 2, 2021 · pp. 10–22 Read article
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Corrosion Protection of Copper Metal by Nanocoating in Nitrogen dioxide Environment
Abstract: Nitrogen dioxide is an acidic gas. It absorbs moisture to produce nitric acid. It creates corrosive medium for copper metal. It forms corrosion cell on the surface of copper and accelerate corrosion reactions. The corrosion cell formation is written as: Cu|Cu2+||H+|H2 thus corrosion reactions start and copper is oxidized into Cu2+surface and it is oxidized into Cu2+ whereas H+ ion is reduced into H2. Nitric acid environment copper exhibits galvanic, …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 1, 2022 · pp. 1–11 Read article
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Laws of Thermodynamics Challenge Greenhouse-Gas and CLIMATE- change Hypotheses
Abstract: The greenhouse-gas hypothesis (GGH), i.e., CO2 is the cause of global warming by ~1K from ~1950-2023, is popularly believed to be established scientific truth. It is generally assumed that heat emissions from global fuel combustion are, by comparison, negligible. An application of the Hess-Gibbs 1st law of thermodynamics, however, shows that the enthalpy (H) output from yearly fossil fuel consumption is seven times greater than the H- increase of hypothetical …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 9, Issue 1, 2023 · pp. 7–19 Read article
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Hot and Cold Fluid: The Concepts of Split Range Control Model
Abstract: The MATLAB tools were used in the research for monitoring the potential of hot and cold fluid application and the integrity of split range control model as related to the effect of temperature. The temperature of the cold fluid was within the room temperature and the temperature of the hot fluid was at elevated temperature. The research showcases decrease in hot fluid with increase in cold fluid, which demonstrate the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 9, Issue 1, 2023 · pp. 28–39 Read article
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Performance of Temperature on Compressive and Shear Strength of High Strength Fiber Reinforced Concrete
Abstract: ABSTRACT This paper presents the results of the experimental investigation of various strengths at elevated temperature of high strength fiber reinforced concrete (HSFRC). Variables considered in the research work are various strengths, temperature and fiber volume fractions. Various strengths considered for investigation are compressive strength, shear strength. Concrete mix of M60 grade and crimped steel fibers with aspect ratio 50 are used. The fiber volume fraction is varied from 1 …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 1, 2017 · pp. 13–23 Read article
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Performance of Metakaolin and GGBS-induced Geopolymer Concrete Under Compression
Abstract: Metakaolin and ground granulated blast furnace slag (GGBS) were used as the source materials to obtain the high strength geopolymer concrete. NaOH and sodium silicate were used as alkaline activators with varying NaOH molarities of 8M, 12M, 14M and 16M. Cubes of size (100x100x100) mm were cast and the four geopolymer mixes were heat cured for varying durations of 24 hours, 48 hours and 72 hours and tested for compressive …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 31–38 Read article
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Analysis of Gravity Dam for Different Rectangular Openings Sizes
Abstract: Gravity dams are very important structures. Different parameters which come in loading combination are temperature, dead weight, earthquake, hydrostatic pressure and water load. From the study, it has been found that the properties which affect the performance of a dam are static properties and thermal properties. Static properties of the concrete dam are strength, Poisson’s ratio and elastic modulus while thermal properties are specific heat, thermal expansion coefficient, thermal conductivity …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 11–17 Read article
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Review Study on re-strengthening of reinforced concrete circular column using steel strips
Abstract: This technique fixes thin steel plates i.e. steel encasement or tie plates i.e. steel cage around the column with steel angles at each corner, clamped to the concrete and welded together. Adequate tightening of the jackets can be ensured by means of heat tensioning. The use of steel jackets can enhance the shear strength of columns considerably. However, due to their low flexural stiffness they typically have poor confinement efficiency …
Published in International Journal of Concrete Technology · Vol. 4, Issue 2, 2018 · pp. 1–9 Read article
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TO IMPROVE THE EFFICIENCY OF SILICA FUME CONCRETE
Abstract: A suitable introduction of silica fume in concrete improves both the mechanical and chemical properties of the concrete. The long-live compressive strength of silica-fume concrete has been recently questioned by some researchers and they were regular in touch of it.This paper reports the results of compressive strength data on strength of silica which is on 4- to 6-year-old cores attained from well-documented field experiments which where both silica-fume and non-silica …
Published in International Journal of Concrete Technology · Vol. 5, Issue 1, 2019 · pp. 39–44 Read article
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Experimental Study of Mechanical Properties Geopolymer Concrete.
Abstract: This experimental study aimed to define the parameters for optimum mix design of geopolymer concrete made by partial replacement of cement. The geopolymer concrete is nothing but the formation of fly ash and alkali activators. Fly ash is the waste product from the thermal power station and may use as the pozzolanic material. But, only fly ash is may not the only replacement for the cement, for the more binding …
Published in International Journal of Concrete Technology · Vol. 5, Issue 2, 2019 · pp. 16–22 Read article
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Potential of Limestone Powder in the Production of Self Compacting Concrete
Abstract: Self-compacting concrete (SCC) is a cutting-edge building material. It's a smooth, durable concrete that fills the formwork completely. The SCC needs a lot of powder to perform well (mostly cement). However, increasing the cement content is impractical and may result in greater hydration heat and drying shrinkage. This project studies the effect of limestone powder (LSP) on the fresh and hardened appearances of SCC. To evaluate the samples with and …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 7, Issue 2, 2021 · pp. 17–23 Read article
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Novel Approach to Improve Stack Effect in High Rise Buildings
Abstract: This paper aims at improving stack effect in high rise buildings using an innovative approach. Parameters influencing stack effect in high rise buildings are identified based on standard theory and practice. A new draft number for estimating stack effect in high rise buildings is derived using Buckingham-П theorem. Airflow data of a university high rise building is considered in estimating stack effect. The draft number developed is enclosed in ANSYS …
Published in International Journal of Structural Engineering and Analysis · Vol. 1, Issue 1, 2015 · pp. 9–17 Read article
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Seismic Performance of RC Building Using SMA Device
Abstract: In the present study, the seismic performance of RC frames with superelastic shape memory alloy damper (SMAD) is investigated. Shape memory alloys (SMA) belong to a class of smart materials capable of regaining its original shape when subjected to heat at a certain temperature. Hence, SMA is used as energy dissipater and re-centering components. A numerical investigation is carried out with nonlinear time history analysis of a five-storey RC frame …
Published in International Journal of Structural Engineering and Analysis · Vol. 5, Issue 1, 2019 · pp. 1–7 Read article
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Study on Analysis and Design in Reinforcement Structure Joints of Water Tank Structure for Safety Human life
Abstract: A water tank is used to store water to surge over the daily requirement. In the construction of concrete structure for the storage of water and other liquids the imperviousness of concrete is most essential. The permeability of any uniform and thoroughly compacted concrete of given mix proportions is mainly dependent on water cement ratio. The increase in water cement ratio results in increase in the permeability. The decrease in …
Published in International Journal of Water Resources Engineering · Vol. 3, Issue 1, 2017 · pp. 16–28 Read article
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Permanent and Electro-Magnetic Generator
Abstract: We know the process of power generation through windmill, thermal power plant in these power generation systems coal and water are the main power generation sources in our country and are non-renewable. In order to save resources which are available in nature solar and wind power generation systems were invented. In the same way, there is a great need to invent new methods to develop the power. So, here we …
Published in International Journal of Analog Integrated Circuits · Vol. 4, Issue 1, 2018 · pp. 10–12 Read article
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Closed Loop Response of Higher Order DC-DC Converter
Abstract: ABSTRACT Converter circuits which are used in power electronic systems for changing the dc voltage from one level to the other. Switching devices are utilized for processing energy from input to output. They have come across many types, some of them are employed for increasing the output voltage and some are utilized for decreasing the output voltage and some of them are applied for performing both the operations within the …
Published in International Journal of Digital Communication and Analog Signals · Vol. 5, Issue 1, 2019 · pp. 24–28 Read article
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Solar Based Electric Fence for Smart Farming
Abstract: Animals create problems for farmers in their fields. By using electric fences farmers can protect their fields, farmhouses, farmlands from animals. These control the animals by giving them a short, sharp but safe shock that teaches them to stay away from the fence. Thus electric fences are economical and practical solutions to maximize field production through controlled grazing. Electric fencing is safe, as its output is discrete. There is certain …
Published in International Journal of Electrical Power System and Technology · Vol. 2, Issue 1, 2016 · pp. 1–5 Read article