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731 articles for “extraction methods”
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Design and Control of Three Phase Grid Connected Solar PhotoVoltaic Power System
Abstract: As the world power utilization quickly increments with populace development, new power era limits are obliged to cover that request. So there is requirement for force era utilizing renewable sources. Henceforth photovoltaic system is actualized to tie with the force framework. Keeping in mind the end goal to concentrate greatest force yield from PV framework proficiently, MPPT system is used. A DC-DC converter utilizes voltage source inverter which is controlled …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 1, 2015 · pp. 20–32 Read article
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Determination of Antioxidant Activity of Phenolic Extract of Grapes
Abstract: The grapes were extracted under various conditions using different solvents. The antioxidant activity of solvent extracts was investigated by DPPH radical scavenging method. Ethanol extract exhibited the highest antioxidant activity compared to the other solvents (BuOH, EtOAc, Me2 Cl2 and pet.ether). There was a correlation between antioxidant activity and total phenol content. HPLC analysis of the extracts showed that gallic and cinnamic acid was the major phenolic compounds in grapes. …
Published in Research & Reviews : Journal of Botany · Vol. 7, Issue 2, 2018 · pp. 17–21 Read article
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An Efficient Color Method for Retrieving Color-based Images
Abstract: Image retrieval plays a vital role in many of the areas. CBIR is content-based image retrieval for browsing images from a large dataset. Image retrieval is used in many of the applications such as image processing, pattern recognition, military, medical fields and forensic fields. In the proposed image retrieval method, color method is used to extract the features and retrieve similar images based on similarity of features. In the color …
Published in Journal of Web Engineering & Technology · Vol. 1, Issue 2, 2014 · pp. 16–19 Read article
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Evaluation of Mechanical Properties of a Sustainable Bamboo Fiber Based Composite
Abstract: This research investigates the process of extracting and using both long and short bamboo fibers from the plentiful Dendrocalamus giganteus species. The fibers were extracted using a synergistic combination of mechanical and chemical methods, which proved to be the most efficient. The process included using an alkali solution and mechanical disintegration to generate superior long and short fibers. Subsequently, these fibers were used to manufacture composites by combining them with …
Published in Journal of Materials & Metallurgical Engineering · Vol. 14, Issue 3, 2024 · pp. 20–30 Read article
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Performance Comparison between Back-Propagation Learning and Kohonen Self-Organizing Neural Networks Algorithm in Terms of Pattern Recognition
Abstract: Pattern recognition using back-propagation learning and Kohonen self-organizing neural network algorithms has been developed and measured various performance based on different criteria and environment of the pattern. These pattern recognition systems have taken the object image as input. In image pre-processing stage, scaling and clipping process has been applied from the background image to avoid unnecessary portion of the object image. Feature extraction has been performed after applying filtering and …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 1, Issue 1, 2014 · pp. 1–8 Read article
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A Novel Approach for Texture Feature Extraction to Retrieve Texture Images using Gray-Level Co-occurrence Matrix (GLCM)
Abstract: Image retrieval plays an important role in many of the areas. Content based image retrieval (CBIR) is used for browsing most similar images from the large database. Texture is an important characteristics used in identifying the region of interest or objects in an image. In this image retrieval method, texture method is used to extract the features and retrieves the similar images based on similarity of the features. In the …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 1, Issue 3, 2014 · pp. 32–36 Read article
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Investigation on the Benefits of Steam Adsorption and Distribution during Cyclic Steam Injection to Improve Oil Recovery - FNE Case Study, Sudan
Abstract: One of the main types of Enhanced Oil Recovery (EOR) methods is thermal stimulation method which is an increasingly common method of extracting heavy oil. there are different forms of the technology of thermal method Cyclic steam stimulation, Steam flooding and In-situ combustion “Fire flooding” are commonly applied to oil reservoirs, which are relatively shallow very viscous oil at the reservoir temperature, the most widely used steam injection methods for …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 1–21 Read article
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Application of Aqueous Two-Phase Systems in the Extraction of Bovine Serum Albumin
Abstract: Protein partitioning in an aqueous two-phase system (ATPS) has been found to be a powerful method for extracting and separating mixtures of biomolecules. In ATPS, many factors influence the partition coefficient K (which is the ratio of protein concentration in the top phase to that in the bottom phase) and the recovery percent (Rec%). Two systems of ATPS were used: first, polyethylene glycol (PEG4000)/sodium phosphate, and second, PEG4000/dextran. The behavior …
Published in Journal of Polymer & Composites · Vol. 11, Issue 1, 2023 · pp. 41–50 Read article
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The Developed System of Continuous Utilization of Carbon Dioxide, Enrichment of the Atmosphere with Oxygen and Production of Biofuel Using the Resulting Concentrate of Rapidly Multiplying Microalgae
Abstract: It is known that microorganisms, such as microalgae, during photosynthesis utilize carbon dioxide and enrich the atmosphere with oxygen. Microalgae, on the other hand, can be converted into biofuels by extracting fatty acids from macromolecules known as lipids. Recovery of this fatty acid traditionally requires the removal of most of the water from the microalgae resulting in biomass slurry. The method developed earlier permitted to obtain a high-quality concentrate of …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 13, Issue 2, 2022 · pp. 10–20 Read article
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Extractive Text Summarization: An Application Based Study
Abstract: Text summarization is an essential tool for extracting important information from lengthy texts or documents. Text Summarization has two main methodologies namely: Extractive Summarization and Abstractive Summarization. This study concentrates on extractive summarising, which selects significant sentences straight from the source material to create a summary. It is a popular option for many practical applications since it frequently produces summaries that are more accurate in terms of substance. In abstractive …
Published in Journal of Artificial Intelligence Research & Advances · Vol. 11, Issue 2, 2024 · pp. 41–48 Read article
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Face Recognition Practices for Partial Occlusion: A Survey
Abstract: Over the years, biometrics has gained unparalleled popularity in digital medium and has proven its usefulness for several applications concerned with the threats and crime or security purposes. Face recognition is a widely emerging biometric for automating the surveillance, as it has aid in strengthening the security from several types of terrorist or criminal threats. However, there are several face recognition techniques which are categorized based on its error rates …
Published in Journal of Artificial Intelligence Research & Advances · Vol. 1, Issue 3, 2014 · pp. 4–14 Read article
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Phyto-chemical Screening, In Vitro Anti-arthritic Study, Formulation and Evaluation of Ethanolic Extract of Helicteres Isora Fruits
Abstract: The present investigation was aimed at exploring the anti-arthritic activity of ethanolic extract of Helicteres isora fruits, using Bovine serum albumin (BSA) and Egg albumin denaturation method. The extract was subjected to preliminary phyto-chemical screening in order to find out the major phyto-constituents present in it. Various concentrations of the extract (100, 250, and 1000 μg/ml) were prepared and the percentage inhibition of protein denaturation was determined. Diclofenac sodium (100, …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 10, Issue 1, 2020 · pp. 34–40 Read article
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SYNERGISTIC FUSION OF HYPERSPECTRAL AND HIGH RESOLUTION IMAGE FOR IMPROVING PERFORMANCE AND RELIABILITY OF AUTOMATICALLY EXTRACTED URBAN FEATURES
Abstract: Image fusion is a generic word referring to several techniques of digital image processing which are used to integrate data from different spatial and spectral resolutions in order to obtain higher-quality synthetic images. This paper emphasizes the assessment and systematic analysis of image fusion techniques by measuring the quantity of enhanced information in fused images. EO1- Hyperion and IKONOS (MSS+PAN) have been fused using Principal component analysis, Gram-Schmidt Transformation (GST) …
Published in Journal of Remote Sensing & GIS · Vol. 1, Issue 1, 2010 · pp. 1–11 Read article
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Adaptive-Hysteresis Current Controller Based Shunt Active Power Line Conditioners for Power Quality Improvements
Abstract: This paper presents three-phase shunt active power line conditioners (APLC) for harmonics and reactive powercompensation due to non-linear loads in the distribution network. The compensation process proposed is asinusoidal extraction control method, which consists of positive-sequence voltage detector for regulating thesupply voltage and instantaneous reactive power (p-q) theory for fundamental extraction from the distorted linecurrent. The shunt active filter voltage source inverter’s switching pulses are generated through an adaptivehysteresiscurrent controller …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 1–13 Read article
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A Comprehensive Survey on Detection of Video Transitions
Abstract: Video shot boundary detection (SBD) is a fundamental task in the field of video processing and analysis. It plays a critical role in various video applications such as content-based video retrieval, video indexing, editing, summarization, and browsing. Identifying shot boundaries helps segment a continuous video stream into distinct shots, each representing a meaningful visual unit. This segmentation is essential for organizing and interpreting video data efficiently. This study provides an …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 12, Issue 3, 2025 · pp. 17–26 Read article
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Promising Antimicrobial Compounds from an Endophytic Fungus Penicillium daleae EF 4 Isolated from the Seaweed Enteromorpha flexuosa Linn.
Abstract: AbstractThe present aim of the study is to isolate the endophytic fungi from various seaweeds and to screen their bioactivity, to analyze the β-lactamase inactivator and to evaluate the interactions between the crude extract of Endophytic fungi Penicillium daleae EF 4 and two antibiotics (penicillin G and tetracycline), against some antibiotic resistant bacterial strains. Seaweeds collected from various places of Bay of Bengal coast was subjected to Endophytic fungal isolation. …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 9, Issue 1, 2019 · pp. 26–39 Read article
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An Approach of Multi-modal Biometric Iris and Speech based Person Recognition System with Decision Fusion Technique
Abstract: This paper presents a unique approach of multi-modal iris and speech feature based person recognition system. Iris images and speech signals are taken from CASIA iris database and NOIZEUS speech database respectively. Iris features are extracted after applying iris images noise removing and image pre-processing techniques. On the other hand, speech signal noise removing, start-end points detection algorithm, silence parts removal, windowing and feature extraction techniques are applied to extract …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 2, Issue 2, 2015 · pp. 5–10 Read article
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Exploring Technologies for Extractive Text Summarization: A Review of Transformer and Reinforcement Learning Models
Abstract: In recent years, the size of information on the Internet has increased exponentially. Therefore, a solution is needed to transform large amounts of raw data into useful information the human brain can understand. Automatic Text Summarization (ATS) is a part of Natural Language Processing (NLP) that aims to take long texts and shorten them, keeping the most important information in a clear and easy-to-understand way. This research report explores methods …
Published in Current Trends in Signal Processing · Vol. 15, Issue 1, 2025 · pp. 1–6 Read article
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Polyphenol Recovery Using Nanofiltration and Tight Ultrafiltration: A Review
Abstract: A viable strategy to lessen the environmental contamination of numerous by-products is pressuredriven membrane-based technology. The recovery, isolation, and separation of polyphenols from such by-products has recently received attention due to the growing interest in natural chemicals having biological activity. The potential to recover phenolics from various kinds of by-products has been observed particularly for tight filtration process and nanofiltration membranes. These membranes' productivity and ability to separate substances are …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 13, Issue 3, 2022 · pp. 31–35 Read article
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The Role of Natural Products in Antiviral Drug Discovery: Insights into Mechanisms and Therapeutic Potential
Abstract: Drug discovery has always relied heavily on natural sources, especially when it comes to creating antiviral medications. This review explores the therapeutic potential of various natural products, including plant extracts, marine compounds, and microbial metabolites, in the fight against viral infections. We examine the mechanisms of action by which these natural compounds exert their antiviral effects, including direct inhibition of viral replication, modulation of host immune responses, and interference with …
Published in International Journal of Virus Studies · Vol. 1, Issue 2, 2024 · pp. 36–47 Read article