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International Journal of Advances in Applied Sciences

IJAAS
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Published by Institute of Advanced Engineering and Science

ISSN : 22528814 EISSN : 27222594 DOI : http://doi.org/10.11591/ijaas

Core Subject : Science, Education, Social,

Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology Mathematics Physics

International Journal of Advances in Applied Sciences (IJAAS) is a peer-reviewed and open access journal dedicated to publish significant research findings in the field of applied and theoretical sciences. The journal is designed to serve researchers, developers, professionals, graduate students and others interested in state-of-the art research activities in applied science areas, which cover topics including: chemistry, physics, materials, nanoscience and nanotechnology, mathematics, statistics, geology and earth sciences.

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Articles 10 Documents

Search results for , issue "Vol 10, No 3: September 2021" : 10 Documents clear

Opposition based red wolf algorithm for solving optimal reactive power problem Lenin Kanagasabai
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

This paper presents an opposition based red wolf optimization (ORWO) algorithm for solving optimal reactive power problem. Each red wolf has a flag vector in the algorithm, and length is equivalent to the whole sum of numbers which features in the dataset of the wolf optimization (WO). In this proposed algorithm, red wolf optimization algorithm has been intermingled with opposition-based learning (OBL). By this amalgamate procedure the convergence speed of the proposed algorithm will be increased. To discover an improved candidate solution, the concurrent consideration of a probable and its corresponding opposite are estimated which is closer to the global optimum than an arbitrary candidate solution. Proposed algorithm has been tested in standard IEEE 14-bus and 300-bus test systems. The simulation results show that the proposed algorithm reduced the real power loss considerably.

A review on the plant secondary metabolites with special context with North East India Devi Ritismita; Manash Pratim Sarma
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

Extracting phytochemicals or phytocompounds for the upliftment of general health and sustainability is one of the greatest needs of the millennium. Plants have immense quality in regard to secondary metabolites although not required for general growth and development yet are very much necessary for forming a protective gear and maintaining homeostasis. With their immense diversity in curing various diseases, these plants' secondary metabolites therefore must be put forth and given much importance in generation and production from the root level to the mission worldwide. Along with the increasing cases of failure in the usage of chemotherapeutic drugs and their utilities, the implementation of secondary metabolites for their various medicinal characteristic in therapeutic cases are also increasing in demand. With the increasing demand for Ayurveda treatment and the popularity of the mass, it can be positively taken up as a means of earning capital and making self-sustaining. North-Eastern states of India in this regard are a vital source of income and also a media to generate and bring indigenous products to the world.

Enhanced model based algorithm to reinforce PV system with dynamic MPPT capability Md. Ehtesham
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

Photovoltaic (PV) power has emerged as the most attractive resource in form of a clean and green energy. However, one major challenge associated with PV interfacing is its intermittent output characteristic which varies dramatically with the operating conditions. Thus designing an effective maximum power point tracking (MPPT) algorithm is a key aspect for optimizing PV system performance. Numerous MPPT algorithms have been proposed earlier having their own specific advantages. However, these are found to have two major limitations which have to be essentially addressed. Firstly, they become ineffective in the dynamic conditions where there is rapid change in environmental parameters like insolation and temperature. Secondly, they fail to discriminate between global and local peaks under partial shading conditions. Therefore, to achieve a reliable and efficient system operation, this paper presents an enhanced model-based (MB) algorithm that overcomes both these deficiencies. Based on new governing equations and precised estimation technique, it predetermines the MPP analytically. First simulated results are obtained where it is tested for dynamic variations of all the three parameters. Then the experimental validation is carried out on a 2 KW installed panel where real time data is recorded through CR1000 data logger and environmental parameters are sensed with elements like pyranometer and humidity sensor. A large number of experimental results are obtained for tracked MPP in the dynamic conditions, which are then summarized in tabular forms. These are finally plotted and compared with simulated results to illustrate the effectiveness of proposed MB algorithm.

An application system for the design of the spindle tool clamping mechanism Parthiban Kannan; Ragul Ramanathan
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

The heart of the machining center design is the spindle design, and one of the primary functions in the spindle design is a tool clamping system mechanism. The selection of disc spring stack for a tool clamping mechanism is an iterative process that highly depends on the spindle space availability, drawbar design, tool unclamp stroke length, and standard clamping force requirements. For example, even a design space of 0.1 mm may impact one kN clamping force depending on the disc spring stack design. Hence the design of the tool clamping system for a spindle is a time-intensive process and also needed careful attention. The iterative process of disc spring stack selection may lead to an unoptimized tool clamping system, which may not be the best design. This paper explains a dynamic way to find the best spring stack selection to optimize the spindle tool clamping mechanism based on the computational application.

Optimal generation capacity mix in microgrid to meet demand Virendra Sharma; Piyush Kumar Choubey; Amit Kumar; Lata Gidwani
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

This paper presents an approach for optimal generation capacity mix to fulfill future power demand using a micro-grid model which is operated in both the on-grid and off-grid modes. This is achieved using the solar photovoltaic (PV) system, fuel-cell, and battery energy storage system (BESS) with and without the grid-connected mode. Different control approaches and optimal size of the generators are presented. Proposed micro grid with solar PV system, solid oxide fuel cell (SOFC) and back scattered electron detector (BESD) is tested for different operational scenarios of loads. Comparative index of performance (CIP) is introduced to indicate effectiveness of the micro-grid operations in the off-grid mode. This is based on difference in the total harmonic distortions (THD) in both the on-grid and off-grid modes. This is established that CIP indicates that the micro-grid works efficiently in the both the on-grid and off-grid modes during the simulated events of the switching ON/OFF the loads at different test conditions. The optimal generation mix successfully met the load demand with and without grid having conventional generation.

True power loss reduction by mountain zebra, augmented bat, and improved kidney search algorithms Lenin Kanagasabai
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

In this paper optimal reactive power problem is solved by mountain zebra algorithm (MZA), augmented bat algorithm (AB), and improved kidney search (IKS) algorithm. In the proposed algorithm, an intermediate state has been established at first, and then explores the intermediate state in order to obtain the global optima. Iterative local search implemented in this proposed algorithm. This technique enhances the search procedure in rapid mode. Then in this work, IKS algorithm has been proposed for solving optimal reactive power problem. In initial phase, a random population of probable solutions is created and re-absorption, secretion, excretion are imitated in the search process to check various conditions entrenched to the algorithm. The algorithm has been built to advance the search even a potential solution moved to waste (W) and it will be brought back to the filtered blood (FB). Glomerular filtration rate (GFR) test is utilized to verify the fitness of kidneys. Better efficiency of the proposed MZA, AB, and IKS algorithm confirmed by successful evaluation in standard IEEE 14-bus, 118-bus, and 300-bus test systems. The results show that active power loss has been reduced.

Dashboard for analyzing SCADA data log: a case study of urban railway in Malaysia Nazwa Hidayah Mohamad; Hairulazwan Hashim; Nor Aziati Abdul Hamid; Mohd Ismarul Azhar Ismail
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

The operation of maintenance in the railway industry is a high priority for safety which reflects the train services. The Kelana Jaya Line (KJL) is the leading urban metro train operator among light rail transit (LRT) categories in Malaysia. The main issue in KJL, they are facing huge historical data from the supervisory control and data acquisition (SCADA) logger when organizing the corrective maintenance work schedule. The previous conventional method leads to time constraint which causes redundancy of data reading. Hence, the SCADA dashboard was developed as a tool to structure their work prioritization for weekly planning. It was developed by using Microsoft Power Query and Power Pivot, in the advanced Excel software. The dashboard evaluation was performed based on usability and user experience studies. The evaluation test proves that the dashboard can be used effectively and it’s beneficial to the organizations as well as a contribute towards systematic maintenance.

Influence of zinc ion concentration on structure, morphology, and optical properties of spray deposited ZnO thin films Sarika Jadhav; Limbraj S Ravangave
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

Zinc oxide (ZnO) thin films were deposited for five different molarity (M) of Zinc acetate hydrated (0.075, 0.1, 0.125, 0.15, and 0.175 M) using simple spray technique to study the effect of zinc ion concentration on structure, morphology, and optical properties. The XRD patterns of deposited ZnO thin films show hexagonal crystal structure with wurtzite symmetry. The effect of molarity on morphology was studied using scanning electron microscopy (SEM). The elemental analysis was studied by using energy dispersive X-ray analysis (EDX). The optical absorption was recorded by using systronics double beam spectrophotometer (2201). Crystallite size estimated from XRD data was in nanometre (nm) range; however, films deposited for 0.15 M zinc acetate show maximum crystallite size (66 nm) as compared to other samples. All the films show low absorption in wide range (340-999 nm) of electromagnetic spectrum. However, ZnO film deposited for 0.15 zinc acetate hydrated shows maximum blue shifting of absorption edge and higher band gap (3.8 eV) as compared to other samples.

Heavy metals removal by thiol modified oak charcoal: adsorption efficiency and selectivity Zeinab Ezzeddine; Batoul Solh; Hussein Hamad
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

Herein, the removal of heavy metals on thiol modified oak charcoal was investigated. The modified charcoal was characterized by X-ray diffraction, granulometric analysis, and infrared spectroscopy. Then, its adsorption efficiency for the removal of Cd2+, Cu2+, and Pb2+ from water was tested. The effects of several conditions on metals adsorption were investigated such as contact time, pH, electrolytes and the initial metal ions concentration. The adsorption capacities were high (197, 250, and 214 mg g-1 for Cd2+, Pb2+, and Cu2+ respectively). The selectivity was also dependent on the metal ions nature and the functional group used. The mechanism of adsorption is complex where several types of interaction between metal ions and the adsorbent surface are involved.

Review of protection aspects of microgrid devices Ashoke Kumar Basu
International Journal of Advances in Applied Sciences Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

A microgrid is required to provide reliable, quality and efficient supply of both electricity and heat demands to its customers when operates either in autonomous or in grid-connected modes. In this context, it is most important to address a comprehensive protection scheme of the microgrid suiting both the modes of operations. This paper concentrates on the impacts of various devices, like distributed energy resources (DERs), transformers, switches, microgrid topology, communication type, grounding type, to name a few, on the microgrid protection systems. The paper reviewes previous works for the various aspects, like characteristics, construction, of these devices in the light of protection. This review-work is useful for future research in the field of microgrid protection as well as in the selection of its devices.

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