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1992 articles for “Keywords”
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Review of Reactive Extraction Process for Recovery of Pyruvic Acid
Abstract: Pyruvic acid having a molecular formula (C3H4O3) is an important alpha-keto-carboxylic acid. It is mainly manufactured by biotechnological routes or chemical synthesis. There are number of applications of pyruvic acid in the industrial sector such as chemical, food, cosmetic and agriculture sector. The main problem for the production of pyruvic acid from the fermentation broth is downstream processing. The number of techniques developed to recover this acid from their aqueous …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 2, 2018 · pp. 1–7 Read article
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On Line Process and Regulator Control (Detailed Version)
Abstract: Modern manufacturing practices and advancement in process control technology are accompanied and faces two problem, namely, (i) to provide quality goods and services and (ii) to contend with limited resources. Statistical modelling methods can provide broad and effective means to address this problem. Process control practitioners, in the Statistical Process Control (SPC) and the Automatic Process Control (APC) areas have endeavoured to integrate SPC and APC for more than half …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 2, 2018 · pp. 37–62 Read article
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Hypotheses for Life Origin on Earth, Comparison and Validation
Abstract: Life origin on Earth is an interesting topic all over world. RNA world, extraterritorial living-form landing, volcanic eruptions, cooperative biological origin hypothesis are major hypotheses so far. A great number of physics, chemical, biological and ecological factors are shared in this Editorial. Advantages and limitations of different aspects of life-origin hypotheses are overall highlighted. KEYWORDS Human evolution, life-origin, RNA-world, systems biology, genetic information system, environmental ecology,
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 2, 2018 · pp. 63–66 Read article
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Review on Corrosion and Rust Inhibition of Machines in Chemical Engineering Field
Abstract: The present review involved information about corrosion and rust of machines like causes of corrosion , mechanism of corrosion ,types of corrosion , treatments. Corrosion is a natural event which includes the deterioration of element components. According to the destruction of a metal or its properties due to a reaction with its environment, which causes potentially severe damage to building , application and surface .Inhibiting corrosion to Prevent Machine Failures …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 1, 2019 · pp. 1–9 Read article
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Novel method for determination of kinetic constants from dynamics in a batch reactor with constant heat input rate
Abstract: In this article a novel method of obtaining reaction kinetic constants is described. It consists of measuring both concentration and temperature dynamics in a batch reactor supplied with a constant heat input rate. A system of esterification reaction between acetic acid and methanol in the presence of a cationic resin catalyst is studied. This reversible reaction’s rate is modeled by molecular order and as pseudo homogeneous assumption. By just one …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 1, 2019 · pp. 19–23 Read article
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AN OVERVIEW OF OPERATION SYSTEM ORDER FOR DC- DC CONVERTER USING PULSE- WIDTH MODULATION
Abstract: To achieve the continuous power transmission, the behavior of dc-dc converter using pulse width modulation technique need to be analyzed in different operation modes. In this paper, review of operation system order for dc-dc converter using PWM that controls the power flow path between the source, load and the battery was done. The generator voltage, input frequency and loads demand with several operating states and control strategies are reviewed. The …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 1, 2019 · pp. 38–44 Read article
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Atomic Layer Etching and its Characteristic
Abstract: Atomic layer etching (ALE) is most advanced etching technique for removing thin layer of material at the atomic level using sequential reaction steps that are self limiting. ALE is thousand times faster as compared of approaches like Reactive ion etching (RIE) & others. ALE with thermal technique, the researchers fabricated 3-D transistors that are as narrow as 2.5 nanometers and more efficient than their commercial counterparts. Consider the etching approaches …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 1, 2019 · pp. 45–56 Read article
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Crystals (Thermotropic phases and Lyotropic phases) in Physical Properties
Abstract: In the current years there has been a cumulative growth to add the numerous nanomaterials to liquid crystals which is encouraged via frequent elements of resources advance. (i) accumulation of nanomaterials can conversion and thus melody the belongings of the liquid crystal (ii) inventive functionalities can be added to the liquid crystal (iii) the self-organization of the liquid crystalline formal can be abused to pattern systematic structures or to assignment …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 2, 2019 · pp. 16–22 Read article
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Preparation of Beta Lactam Compounds and Study of Thermodynamically Behavior
Abstract: Several Lactam derivatives have been prepared by condensation reaction of folic acid with (4-chloroacetophenone and 4-hydroxyacetophenone) in ethanol. Then the resultant compounds (1,2) react with another Schiff bases by reacting of 4- bromobenzaldehyde with an amino acid (Phenylalanine, Tryptophan, Tyrosine and Histidine) to give bis-β-lactam rings. The structures of target compounds were characterized by many spectroscopic methods including NMR, FTIR technique and their melting points. The β- lactam derivatives were …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 2, 2019 · pp. 9–15 Read article
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Review on Preparation and Applications of Formazan Compounds
Abstract: The objective of the survey designated in this study is to predict the redox-active feature of formazan derivatives. To realize this purpose, preparation processes and investigation approaches of the formazan derivatives are developed. The redox properties of formazan derivatives were identified via electrochemical approaches and the first samples of isolated and well-investigated formazan products are designated in this review. Formazan derivatives (as a dyes) are synthetic chromogenic yields of the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 2, 2019 · pp. 23–33 Read article
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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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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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Sustainable Management of Construction Claims; Types, Causes and Settlements
Abstract: Abstract Claims are considered as the most disruptive and unpleasant events for most of construction projects as of their impacts on project performance and objectives. The study in this paper was directed to identify the current claims types in construction projects in Jordan, and then identify the causes of each type related to project stakeholders (owner, consulting engineer, contractor and others). The research is then conducted to determine the current …
Published in International Journal of Construction Engineering and Planning · Vol. 1, Issue 2, 2015 · pp. 1–13 Read article
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Sustainable Contractual Disputes in Managing Construction Project
Abstract: Abstract Understanding of the differences of construction dispute resolution processes and their ticklish methods will be undoubtedly priceless and precious to project managers in dealings with construction disputes, as they become an inescapable part of construction projects. The study is conducted to identify the main causes and impacts on project performance baselines (scope, cost and schedule). Outcomes of this study showed that the causes of contractual disputes are mainly related …
Published in International Journal of Construction Engineering and Planning · Vol. 2, Issue 1, 2016 · pp. 1–12 Read article
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Evaluation of Manpower Training and Development in Nigeria Construction Industry
Abstract: Abstract Lack of technical and managerial skill is often identified as one of the major problem facing construction industry in developing countries resulting in poor competitiveness with their developed and industrialized counterparts. Research had shown that building failure is not only caused as result of inefficient design, lack of standard materials, but also due to lack of skilled labour in the construction project. This research evaluate manpower training and development …
Published in International Journal of Construction Engineering and Planning · Vol. 2, Issue 1, 2016 · pp. 13–26 Read article
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Simulation Models for Flexural and Compressive Strength of Concrete Using Waste Glass as Partial Replacement.
Abstract: The research present the usefulness of waste glass in the production of grade 20 concrete using partial replacement levels of 0%, 20%, 40% and 60%, respectively, for coarse glass and fine glass to coarse aggregate and fine sand aggregate. The results obtained indicate that, for the purpose of construction works, 20% replacement should be adopted either for coarse glass or fine glass replacement. Simulation models were established to predict flexural …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 2, 2018 · pp. 1–7 Read article
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Analysis and Design of Timber Box Beams Using Vlasov’s Theory
Abstract: ABSTRACT This study was done to derive/obtain the equation of equilibrium of a timber box beam made up of timber (anisotropic material) by using Vlasov’s theory and principle of minimum potential energy. A comparative analysis of the theoretical results obtained was done by the analysis of timber box beams using the development and the experimental results of the same box beams. The results obtained were found to co-relate even when …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 2, 2018 · pp. 8–15 Read article
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Determination of the optimum magnetic exposure time for magnetic water concrete
Abstract: The purpose of this study was to investigate the effect of magnetic water on the workability and compressive strength of concrete, and also to find the optimum time for exposing water to magnetic field, for which maximum compressive strength of concrete will be achieved. In this research, water was exposed to magnetic field of 336mT per magnet for a duration of 12, 18, 24, 36, and 96 hours, after which …
Published in International Journal of Construction Engineering and Planning · Vol. 6, Issue 1, 2020 · pp. 34–42 Read article
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Clash Detection in Appropriate Technology Building Using Building Information Modelling (BIM)
Abstract: Building Information modelling (BIM) is a highly efficient software in Architecture, Engineering and construction (AEC industry). Clash detection technique is used to minimize the error as well as to minimize the cost and time. Especially in 2D drawings, lots of problems emerges at the time of execution. One of the best tools used in this project is clash detection tool which coordinates the building system in 3D models. This clash …
Published in International Journal of Construction Engineering and Planning · Vol. 6, Issue 1, 2020 · pp. 15–24 Read article
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Impact of Sugarcane Molasses on Compressive Strength and Workability
Abstract: Molasses used as admixture increase the workability, it is a by-product of sugar industry. In this study, mechanical property such as compressive strength and workability of concrete adding fly ash and sugarcane molasses has been investigated. Adding the molasses in concrete increase the compressive strength, delay the initial and final setting time, reduced the bleeding and segregation of concrete and decrease the W/C ratio. The compressive strength test results showed …
Published in International Journal of Construction Engineering and Planning · Vol. 6, Issue 1, 2020 · pp. 1–5 Read article