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387 articles for “isolated”
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Advanced 4-Element UWB-MIMO Antenna Design: Achieving High Isolation and Multi-Band Rejection for Advanced Wireless Applications
Abstract: In this study, we present the design, fabrication, and analysis of a step-by-step Ultra-Wideband (UWB) Multi-Input Multi-Output (MIMO) antenna operating from 3 to 14 GHz. The antenna consists of four elements, each characterized by high isolation and equipped with four band-rejection features. These elements are implemented on a Rogers substrate with εr=3. Each antenna element is a modified rectangular patch, incorporating partial ground etching to achieve wider bandwidth. Two sets …
Published in Journal of Communication Engineering & Systems · Vol. 15, Issue 1, 2025 · pp. 40–62 Read article
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Design and Performance Analysis of Natural Rubber–Silica Nanocomposite Vibration Isolators for Household Appliances
Abstract: Natural rubber (NR) nanocomposites reinforced with surface-modified precipitated silica (SiO2) were synthesized through a two-roll mill compounding and compression-moulding process, then systematically evaluated as passive vibration isolator materials for domestic washing machine applications. Five silica loadings 0, 5, 10, 15, and 20 phr were investigated. A comprehensive characterization suite encompassing tensile testing, Shore A hardness, dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) revealed clear structure–property …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 554–560 Read article
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Isolation, Purification, and Identification of Antibiotic-Resistant Bacterial Strain from Food Stuffs
Abstract: The widespread presence of bacteria in foodstuffs poses significant trouble to health and food safety. Pathogens in consumable products increases the transmission of resistance genes to human, potentially compromising the efficacy of conventional antibiotics. This study aims to isolate, purify, and identify antibiotic-resistant bacterial strains from food items, meals, and vegetables. The investigation employed selective culture techniques, antibiotic susceptibility assays, and molecular identification methods to detect and characterize resistant strains. …
Published in Recent Trends in Infectious Diseases · Vol. 3, Issue 2, 2026 · pp. 37–45 Read article
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Improve Isolation of UWB MIMO Antenna by using Neutralization Line
Abstract: Abstract: In this paper, UWB MIMO antenna designing by using neutralization line to improve the isolation of the proposed antenna. The impact of using neutralization line covers the bandwidth from 2.9 to 6.5 GHz. Obtain peak gain 3.9 dB at frequency 5.3 GHz with 95% efficiency. WLAN, WMAX are the main application of this design. Keywords: UWB, MIMO, Neutralization LineCite this ArticleNivedita Srivastava, Rajan Mishra. Improve Isolation of UWB MIMO …
Published in Journal of Microwave Engineering and Technologies · Vol. 6, Issue 1, 2019 · pp. 18–24 Read article
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A Topology Review of Isolated Multi-Output Converters
Abstract: This paper does a comprehensive review of isolated multi-output converter topologies. The converters are broadly grouped in to three different categories: Cross regulated converters, Post regulated converters and resonant converters. The working principles are discussed and the relative features of the topologies are brought out. Keywords: multi-output, isolated converters
Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 1, 2013 · pp. 5–17 Read article
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Photovoltaic Integrated Electric Vehicles Charging stations for isolated locations
Abstract: Future mobility plans of global countries focus on replacement of IC engines operated mechanism by electrically powered systems. It aims to reduce carbon footprints, improve fuel efficiency and make vehicle systems smarter. A typical electric vehicle is an integration of battery banks, charge management systems, electric motors, power electronic converters, and control mechanisms. The battery bank maintains the supply of energy for the operation of the motor which in turn …
Published in Trends in Electrical Engineering · Vol. 13, Issue 1, 2023 · pp. 1–11 Read article
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The study on the isolation, culture, differentiation and transplantation of neural stem cells from brain of crossbred white rat in the neonatal period
Abstract: We have studied for isolating neural stem cells from brain tissue of neonatal crossbred white rat, culturing and transplanting into local cerebral ischemic reperfusion model rat. We performed digestion of brain tissue, primary culture and subculture of segregated cells, measured number of neurosphere and growth index and ratio of cell survival, and identified expression of nestine from cultured cells, investigated engraftment of NSCs into ill brain tissue after transplantation of …
Published in Research and Reviews: A Journal of Medicine · Vol. 12, Issue 2, 2022 · pp. 13–19 Read article
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Prevalence and Antibiogram Profile of Uropathogens Isolated from Symptomatic and Asymptomatic Female Patients with Urinary Tract Infections and its Associated Risk Factors: Focus on Cephalosporin
Abstract: Urinary tract infections (UTIs) are common among women. Here, the present study probes the prevalence of urinary tract infection (UTI), assess the adequacy of empirical therapy, susceptibility of antibiotics and resistance pattern of bacteria responsible for UTI and its associated risk factors. A total of 1309 urine samples were collected from UTI suspected female patients of tertiary care hospitals between the ages of 18-49. Moreover, a total of 207 urine …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 7, Issue 1, 2018 · pp. 32–41 Read article
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Isolation and Characterization of Rhamnolipid from Pseudomonas aeruginosa: Assessment of Biofilm Disruption Potential
Abstract: Biosurfactants are microbial metabolites bearing typical amphiphilic structure of a surfactant. This study is aimed at isolation and characterization of Rhamnolipid (RL) biosurfactant from Pseudomonas aeruginosa MTCC 2488. Characterization of biosurfactant was assessed by oil displacement test, foaming test, thin layer chromatography (TLC) and antimicrobial activity for the same was evaluated against planktonic/sessile microbes including Staphylococcus aureus, Bacillus subtilis and Candida albicans. Keywords: Biosurfactant, rhamnolipid, biofilm, Pseudomonas aeruginosaCite this ArticleKaur …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 8, Issue 2, 2018 · pp. 26–33 Read article
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Characterization of Laccase Enzyme from Dye Degrading Bacterial Strains Isolated from Natural Sources
Abstract: The continuous growth in globalization and industrialization has increased the environmental pollution and one such major contaminant is various types of synthetic dyes. Microbial decolorization and degradation of these dyes through secretion of various extracellular enzymes is gaining importance owing to their eco-friendly nature. One such enzyme is laccase, a multicopper oxidase enzyme which has the ability to oxidize both phenolic and non-phenolic compounds through reduction of molecular oxygen to …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 9, Issue 1, 2019 · pp. 65–76 Read article
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Evaluation of Cholesterol Reduction in Probiotic Strain Lactobacillus brevis isolated from Human Fecal Sample by Using Surface Response Methodology
Abstract: Lactobacillus brevis, isolated from human feces was assessed for its in vitro cholesterol reduction ability. The effects of bile salts, inoculum size and contact time in simulated intestinal juice were studied. Central composite design model was utilised to determine the effects of interactions of significant variables on cholesterol reduction. By developing a linear regression model, as a function of growth associated variables in vitro cholesterol reduction was assessed. The results …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 9, Issue 1, 2019 · pp. 40–49 Read article
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Zymomonas isolated from different States of Mexico: limited producers of ethanol
Abstract: The microbial synthesis of ethanol is conventionally by yeast, however the bacterial genus Zymomonas has an interesting capacity to synthesize ethanol, currently it is an ecological alternative, for the global demand for fuels other than oil. The objectives of this work were: i) to isolate Zymomonas that synthesize ethanol from natural sources ii) to select Zymomonas natural amounts for ethanol synthesis. The results show a wide distribution of Zymomonas in …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 15, Issue 1, 2024 · pp. 1–9 Read article
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Natural Occurrence and Isolation of Ampelomyces quisqualis (mycoparasite) Associated with Rose, Other Powdery Mildew Infecting Host Plants in Himachal Pradesh, India
Abstract: The presence of Ampelomyces spp. was quantified in naturally occurring powdery mildew infecting rose plants during the year 2015–2016. Powdery mildew infected rose samples were collected from the different rose-growing areas of Himachal Pradesh during the months of April–June and September–November. Relationships between Ampelomyces and Podosphaera pannosa were reported in four areas between September and November. Bilaspur, Mandi, Shimla, and Solan. However, there was no occurrence of Ampelomyces quisqualis in …
Published in International Journal of Fungi · Vol. 1, Issue 2, 2024 · pp. 23–28 Read article
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Effect of Different Incubation Times on the Effectiveness of Oyster Mushrooms Towards the Growth of Some Fungal Isolates
Abstract: The study was conducted by preparing the filtrate of the oyster mushroom Pleurotus ostreatus, where the effectiveness of the fungal filtrate prepared from growing the fungus in the liquid Potato Dextrose Broth (PDB) medium was selected for two different periods (14, 28 days) in inhibiting some types of fungi (Aspergillus Spp : Aspergillus niger ،Aspergillus flavus, Aspergillus terreus) and some types of fungi (Candida Spp: Candida albicans, Candida tropicalis, Candida …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 15, Issue 2, 2025 · pp. 1–8 Read article
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Reduction of Harmonics for Isolated Diesel Generation System with DSTATCOM Using Fuzzy
Abstract: This paper presents the compensation of reactive power, harmonics, and unbalanced load current of diesel generator set for an isolated system by controlling voltage source convertor (VSC) which is working as distribution static synchronous compensator (DSTATCOM). Here least mean square based adaptive linear element (ADALINE) is use to extract balanced positive sequence real fundamental frequency component of the load current for converter and used to control DSTATCOM. For fast dynamic …
Published in Journal of Automobile Engineering and Applications · Vol. 2, Issue 3, 2015 · pp. 12–22 Read article
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A Study of a Non-Isolated DC-DC Converter Based on High Voltage Gain
Abstract: This article implements a best non-isolated DC-DCConverter for solar photovoltaic system-driven DC MicroGridapplications through high voltage gain methodology. At first, ahybrid boosting converter with bipolar voltage multiplier method isproposed and studied for photovoltaic-based DC MicroGrids. Butthe cost and functionality of this converter are a big problem. Toeradicate these problems with a proposed modified SEPICconverter and this converter is studied for producing high voltagegain. Formerly performance of hybrid boosting converter andmodified …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 3, 2023 · pp. 17–29 Read article
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Operation of isolated DFIG with Modified P&O MPPT Algorithm
Abstract: AbstractThis paper demonstrates validation of modified control algorithm for MPPT (Maximum Power Point Tracking) for Doubly Fed Induction Generator (DFIG) based WECS (Wind Energy Conversion System). The main objective is maximizing the wind energy by optimizing the losses. MPPT algorithm implementation is done by performing control of duty cycle of DC to DC boost converter. This method establishes effective system for wind energy utilization and reduces rating for control. The …
Published in Journal of Semiconductor Devices and Circuits · Vol. 7, Issue 1, 2020 · pp. 29–33 Read article
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Isolation and Characterization of “Heavy Chain Antibody” Variable Domain Gene of Indian Desert Camel (Camelus dromedarius, L.)
Abstract: Camelids have “heavy chain antibodies” (HCAbs) of IgG isotype (IgG2 and IgG3 subtypes) and lack light chains and heavy chain constant domain 1 (CH1) in their structure. The molecular biological features of VHH (i.e., antigen binding variable domain of HCAbs) gene isolated from Indian desert camel were examined as a prelude to construct VHHs-phage display library. VHH cDNA was synthesized by reverse transcription-polymerase chain reaction (RT-PCR) from B lymphocyte mRNA, …
Published in Research and Reviews : A Journal of Immunology · Vol. 3, Issue 1, 2013 · pp. 22–31 Read article
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A Study for the Presence of Enterococcal Virulence Factors Gelatinase, Haemolysin among Clinical Isolates in a Tertiary Care Hospital
Abstract: Enterococcus, considered a normal commensal of intestinal tract, is fast emerging pathogen causing serious infection. Despite the increasing importance of Enterococcus as opportunistic pathogens, their virulence factors are still poorly understood. The potential virulence factors of Enterococci include production of enterococcal surface protein (Esp), gelatinase, and haemolysin. Gelatinase- and haemolysin-producing strains of Enterococcus faecalis have been shown to be virulent in animal models of enterococcal infections. This study was undertaken …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 7, Issue 3, 2017 · pp. 14–18 Read article
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Partial Characterization of Crude Lipase from Mutant Soil Fungal Isolate
Abstract: Lipases are cluster of enzymes which cleaves oils and fats. Characterization properties oflipases have been studied in the present investigation because they play an imperative role inseveral industrial applications. The present lipase obtained from soil fungal strain named asEMS5%-60min exhibited optimum activity at pH 7.0 (24.90±0.25 IU/ml/min) and 37ºC (20.28±0.51IU/ml/min). In pH stability profile, the enzyme was found stable in alkaline pH range withhighest activity (13.08±0.07 IU/ml/min) at pH 9.0. …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 8, Issue 3, 2018 · pp. 79–89 Read article