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397 articles for “Stability”
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Thermodynamic study of Pr(III) complex in mixed solvent system at 303.15K
Abstract: A conductance study of the interaction between Pr(III) complex in mixes solvent system at 303.15K. The metal-ligand stability constant of the complex was determined by conductance measurements. The free energy change of the complex was investigated at 303.15K using thermodynamic relations, the negative values of free energy means that the complex formation process is spontaneously.Key word: metal –ligand stability constant, conductometry., thermodynamics relations
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 2, 2020 · pp. 16–19 Read article
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Design and Construction of an Excavation Supported by Temporary Soldier-Pile Wall for Urban Road Corridor
Abstract: This study addresses a temporary shoring system design used in the construction of an urban road corridor in four areas, with a total length of about 93 m and excavation heights of 5.2 m and 8.5 m. A comparison was made between the original design and a present study. The first condition was calculated manually following Brazilian standards, while the last one was made through computational programs, following the recommendations …
Published in International Journal of Construction Engineering and Planning · Vol. 5, Issue 2, 2019 · pp. 36–63 Read article
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Re-Characterization of Strength Properties of Asphalt Concrete Mixtures Using Non Bituminous Modifier – Candle Wax
Abstract: Improving the performance of asphalt concrete mixtures synonymous with flexible pavement has been a major concern in highway engineering. However, design of flexible pavement begins with proper material characterization to ensure that designs are appropriate. It is also pertinent to say that sometimes if not most times the properties of the individual materials that make up the pavement structure falls short of desired expectations. This has led to exploring techniques …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 30–36 Read article
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Application of Suitable Admixtures (Lime and RHA) for Improvement of Pavement Subgrade
Abstract: Abstract The quality of a pavement depends on the strength of its sub-grade. The present investigation has been carried out with easily available materials like lime and rice husk ash mixed individually and in combinations with different proportions. The different percentages of lime with respect to weight of dry soil were 2%, 4%, 6%, 8% 10% and for rice husk ash (RHA) were 3%, 6%, 9% and 12%. In each …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 1, Issue 2, 2015 · pp. 14–31 Read article
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Prediction and Assessment of Lateral Displacement of Rock Mass Along the Length of the Horseshoe Cavern – A Numerical Modelling Approach
Abstract: The stability of the underground structures is a key to successful underground mining. Caverns are large underground openings constructed in rock mass for a variety of purposes. The properties of intact rock mass are generally overshadowed by the properties of discontinuities, if the discontinuities are present. Mechanisms of deformation and failure of underground openings in jointed rock mass are determined by the characteristics of the geometrical distribution of discontinuities. This …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 3, Issue 1, 2017 · pp. 17–28 Read article
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Some Geomechanical and Petrophysical Linkages Within Paleo-Sedimentary Beds of Ghana
Abstract: Instability issues have been a major challenge in the Sekondian Series of South-Western Ghana. This is particularly affecting civil works and environmental mitigation efforts across the formation as extensive weathered profile impedes structural integrity. Uniaxial Compressive Strength (UCS) of lithological units which is a critical stability measure in most engineering projects requires quality sample of appropriate dimension for its determination. Samples for this important design parameter cannot be easily obtained …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 6, Issue 1, 2020 · pp. 31–42 Read article
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A Comparative Study of Soft Storey Buildings with Equivalent Diagonal Struts during Earthquakes
Abstract: The evaluation of soft storey buildings during earthquakes is vital as these structures tend to be highly flexible and susceptible to lateral vibrations. In this study, a six-story building (G+5) is analyzed with varying positions of soft storey floors. The objective is to assess the impact of soft storey on the overall behavior of the building and to enhance its stability through the implementation of equivalent diagonal struts at the …
Published in International Journal of Structural Engineering and Analysis · Vol. 8, Issue 2, 2022 · pp. 20–24 Read article
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BY USING ETABS ANALYSIS OF LATERAL RESISTANCE SYSTEM TO REDUCING THE DISPLACEMENT IN MULTISTOREY BUILDING
Abstract: It is usually a good idea to build a huge building to make better use of the land Recycled concrete is predominantly employed in both workplaces and homes. However, tall structures are susceptible to collapse, especially when subjected to seismic activities and wind vibrations. The structure is subjected to high tension and displacement of lateral forces and can withstand vertical forces with adequate stiffness for horizontal forces. The stability of …
Published in International Journal of Structural Engineering and Analysis · Vol. 9, Issue 1, 2023 · pp. 21–37 Read article
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Experimental Assessment of Durability of Asphalt Pavement Surfacing Modified with Fly-Ash Under Moisture Submergence
Abstract: The impact of environmental factors such as moisture and temperature cycles together with traffic loads and configurations on pavement combined with the need for improved construction materials have made it pertinent for research into better ways to enhance asphalt pavement properties for better performance. This study adopts an experimental approach using the Marshall Mix design method to investigate the effect of fly-ash in the enhancement of asphalt pavement wearing course …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 6, Issue 2, 2020 · pp. 1–9 Read article
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Influence of Waste Plastic Dosage on Bituminous Concrete Mix Design Properties
Abstract: Nowadays there is a lot of focus and concern regarding handling waste plastics in order to minimize pollution caused by it to the environment, human life and marine species. Hence to mitigate these problem waste plastics are currently used in the construction of flexible pavements. In the current practices, waste plastics are added to the preheated aggregate which may have a slight improvement in the volumetric property of bituminous mixtures. …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 8, Issue 1, 2022 · pp. 33–39 Read article
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Experimental Study on Scour Around T-Head Groynes in Open Channel
Abstract: Groynes are the river training structures which are used extensively in anti-erosion activities. An experimental investigation of scouring around the groynes in an open channel is presented in this paper and an attempt to analyze the behavior of T-shaped groynes in terms of its applicability in alluvial channels was made. Tests were conducted by varying the symmetry of flange in three different manners (symmetric, larger flange in upstream and downstream …
Published in International Journal of Water Resources Engineering · Vol. 4, Issue 1, 2018 · pp. 33–39 Read article
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Experimental Realization of Constrained Optimization of Sliding Mode Controller Parameters with Modified Objective Functions
Abstract: An appropriately tuning of Sliding Mode Control (SMC) can be used to overcome the weaknesses like sensitivity to parameter variations, modeling errors and external disturbances. In this research article, Non-Dominated Sorting Genetic Algorithm (NSGA-II) based SMC with modified objective function and the best weight values have been evaluated to improve the performance of closed-loop level control system. Equivalent weights and importance weights are assigned to each term of an objective …
Published in International Journal of Software Computing and Testing · Vol. 6, Issue 1, 2020 · pp. 8–25 Read article
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Power Quality Intensification in Power Distribution System by Fast Acting DSTATCOM with Y/∆ and T-Connected Transformer
Abstract: Mostly all domestic and industrial installation uses 3- section 4-wire distribution system, however just about appliances square measure single phased which can produce unbalance within the offer system conjointly typical masses like TV, personal computers, movable chargers, Air conditioners etc. uses power electronic converters and attracts non-sinusoidal currents, these 2 things could cause high neutral current and build harmonics within the offer system. it should cause wiring failures, rising of …
Published in International Journal of Electrical Power System and Technology · Vol. 3, Issue 1, 2017 · pp. 34–47 Read article
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Wind-Solar Cogeneration on the Grid Using Voltage-Source Converters
Abstract: The paper presents a cost-effective configuration for a Grid-Connected Wind-Photovoltaic Cogeneration system. In addition, topology provides an independent tracking of the maximum power point for both wind and solar to maximize renewable energy use. The solar is correlated with grid via Voltage Source Inverter (VSI), wind turbine based on a permanent magnet synchronous generator is correlated with the utility grid via Voltage Source Rectifier (VSR). The intermediate circuit capacitor was …
Published in International Journal of Electrical Power System and Technology · Vol. 9, Issue 2, 2023 · pp. 23–28 Read article
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Experimental Validation of Frequency Response Model Matching Method for Processes with Dead-Time
Abstract: ABSTRACT This paper addresses proportional-integral- derivative (PID) controller design for singleinput, single-output (SISO) process. The controller design is based on the frequency response model matching method. Tuned parameters of PID controller are found by two methods. A double feedback loop configuration is considered. In the first method, The inner loop is designed with a stabilizing gain while the outer loop is designed using frequency response matching between the closed loop …
Published in International Journal of Embedded Systems and Emerging Technologies · Vol. 5, Issue 1, 2019 · pp. 30–40 Read article
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Modelling and Control of Higher Rating DC Motor with GA-Based Optimized PID Controller
Abstract: The usage of the common kind dc motors has its extended past. It has been used in the productions for numerous ages currently. They deliver humble means and exact method of controller. In addition, they have high efficiency and have a high starting torque versus falling speed characteristics which helps high starting torque and helps to prevent sudden load rise. But with such characteristics, the dc motors have some deficiencies …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 1, Issue 1, 2015 · pp. 23–30 Read article
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Low Power, High Reliability: A Survey of 10T SRAM Cells for Reduced Stand by Power and Enhanced Noise Resilience
Abstract: With a focus on maximising power efficiency and attaining good read stability and write-ability, the project presents a low standby power 10T (LP10T) SRAM cell. The Schmitt-trigger inverter and the double-length pull-up transistor are combined with a regular inverter and stacked transistor to form a robust cross-coupled structure used in the LP10T SRAM cell. One of the key advantages of the LP10T SRAM cell is that it separates the read …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 9, Issue 1, 2023 · pp. 34–56 Read article
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Load Frequency Control of Interconnected Power System by Conventional and Facts Devices
Abstract: The stability of power systems has been and continues to be of major concern in system operation. Modern electrical power systems have grown to a large complexity due to increasing interconnections, installation of large generating units, and extra-high voltage tie lines, etc. Transient stability is the ability of the power system to maintain synchronism when subjected to a severe transient disturbance, such as a fault on transmission facilities, sudden loss …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 4, Issue 2, 2018 · pp. 9–15 Read article
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Synthesis and Characterization of Graphene Nanoplatelets & Graphene Oxide Based Nanofluids With Their Comparative Analysis for Heat Transfer Applications
Abstract: Stability and thermal conductivity are the main features of nanofluids. Higher concentration of nanoparticles become the reason of agglomeration, so a balance equation is required for the preparation of remarkable nanofluids in the application point of view. In the present study, we describe a novel synthesis of graphene Nanoplatelets and graphene oxide based nanofluids with different concentration (0.001,0.003,0.005wt %) with the help of stock solution of 1mg/ml. The Hummer’s method …
Published in International Journal of Applied Nanotechnology · Vol. 4, Issue 2, 2018 · pp. 13–29 Read article
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The Effect of Carbon Percentage on Structural Steel’s Compressive and Tensile Strength: A Literature Survey
Abstract: The fundamental necessity of this survey is to check the enhancement of the strength, hardness, dimensional stability and wear resistance by passing them through the cold temperature that enhance the hardness of the substance as a result of the increment in which it took place within the proportion of primary solid solution within the structure. If the type of methods mentioned in the article are employed in manufacturing and production …
Published in International Journal of Metallurgy and Alloys · Vol. 1, Issue 2, 2015 Read article