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1893 articles for “high-k” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Using of the sea grasses for the removal of some industrial organic dyes; bromo cresol purple from aqueous solutions
Abstract: Abstract: The objectives of this study are evaluating the efficiency of low cost adsorbents of activated carbon obtained from sea grasses. Using the sea grasses for the removal of some industrial organic dye; bromo cresol purple indicators from aqueous solutions and studying the impact of some of the factors including different dosages , pH, different concentrations, different temperature and effect of time of adsorbed materials. Adsorption efficiency of dye onto …
Published in Emerging Trends in Chemical Engineering · Vol. 6, Issue 3, 2019 · pp. 29–36 Read article
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Vertical Axis Wind Turbine Modeling and its Analysis Using ANSYS
Abstract: Research on small wind turbine (SWT) is on the upswing in the last five years, as there is a need of energy producing machines to compensate with the fossil fuel based energy. The green technology wishes to create environment friendly energy producing devices based on wind or solar technology. In this paper, an attempt is made to make use of already existing waste wind energy produced by high speed moving …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 1, 2017 · pp. 26–32 Read article
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Millimeter Wave Slotted Microstrip Patch Antenna for Next Generation 5G Communication
Abstract: Abstract: In this paper, a printed microstrip patch antenna is analyzed for lower band 5G technology. The proposed printed Microstrip patch antenna has a compressed structure having dimension 20 × 20 × 1.6 mm3 with the conducting ground plane and this antenna is well suited for the use in handheld next generation 5G devices. Modified antenna resonated at lower band of 5G communication technology. In this research work geometry of …
Published in Journal of Microwave Engineering and Technologies · Vol. 6, Issue 1, 2019 · pp. 25–30 Read article
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Mitigation of Flicker and Harmonics in Grid Connected DFIG for Power Quality Improvement
Abstract: This paper focuses on the mitigation of voltage harmonics and flicker of a grid connected doubly fed induction generator for wind energy conversion system. The harmonics have been mitigated by an active series filter and flicker levels have been minimized by optimal control of wind turbine output reactive power. The effectiveness of the proposed mitigation strategies has been analyzed for various grid conditions and different wind speeds. The flicker levels …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 2, 2014 · pp. 12–23 Read article
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Comparison of Conventional RCC Columns, Steel Columns and Composite Columns
Abstract: Worldwide, the steel industry is expanding almost everywhere. Compared to the USA, EU, and other developed nations, India uses less steel in the construction industry. Additionally, India's cities have some of the highest population densities per square kilometre, which limits horizontal construction growth and favours vertical development. Steel structures are more ductility and can undergo more deflections while concrete structures are larger and attracts more seismic weight. Hybrid construction combines …
Published in Journal of Structural Engineering and Management · Vol. 10, Issue 3, 2023 · pp. 35–44 Read article
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Fatigue Test on Cost Effective Aluminium Metal Matrix Composite Prepared from Discarded Toner Powder and Coconut shell Ash Particles
Abstract: AbstractAs there is an increasing demand for low cost reinforced composite materials in various industrial applications, in this work Aluminium Metal Matrix Composite was prepared by reinforcing cost effective reinforcements like discarded tonner powder particles and coconut shell ash. Aluminium 2024 was taken as the base matrix for preparing the composite as it is widely used in automobile industry. The samples taken for the investigation were prepared by two step …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 5, Issue 3, 2018 · pp. 15–20 Read article
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Light Sensor Circuit
Abstract: The presence of light increases current in the photo diode or phototransistor. LM317 supplied lower voltage DC power in the circuit. Capacitors are connected in parallel with the DC output in order to filter out any high frequency AC signal coming from the noise. NE555P Timer produced accurate oscillation. BPV11 is used as a photodiode. LM311 is the comparator and the light on/off is converted to low/ high of the …
Published in Trends in Electrical Engineering · Vol. 9, Issue 2, 2019 · pp. 7–11 Read article
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Measuring Concentration and Deconcentration of Urban Form: A Case Study of Rajkot
Abstract: The concept of compact city development has always been a guiding principle for modern day urban planning and has constantly being practiced in most of the developing and developed nations due to its embedded philosophy of having a socially interactive society without urban sprawl. Efficient use of land, protection of environment, reducing trip length of commuters are some of the key benefits, which has been highlighted by the urban planners. …
Published in Trends in Transport Engineering and Applications · Vol. 3, Issue 3, 2016 · pp. 23–32 Read article
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AODV Routing Protocol for Congestion Control Based on Packet Priority
Abstract: There is a requirement for permitting customer prioritization, in wireless multimedia streaming; so, arrangement of end client can be empowered with a good quality in-coordinate association with other client devices consequence. As of now, a similar priority is given to all clients, autonomous of their attributes, regularly bringing about unfair dispersion of throughput. This paper proposes a need based plan for QoS in MANET by classifying the activity stream into …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 1, 2018 · pp. 59–68 Read article
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Comparison of Ultra Wide Band Indoor Multipath IEEE 802.15.3 Channel Model
Abstract: ABSTRACT A very large bandwidth of frequency (3.1–10.6 GHz) has been allocated to UWB systems. A single-band UWB signal propagates differently in the lower and upper bands of the spectrum due to the size of its bandwidth. The lower part of the signal can be obstructed more easily and the man-made interferences are not homogeneously distributed over the whole spectrum. The first experimental results obtained for a UWB channel show …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 3, 2012 · pp. 20–25 Read article
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Prevalence and Treatment Outcome of Burn Injury among Pediatric Patients Attending Pediatric Emergency OPD of Hawassa University Comprehensive Specialized Hospital, Hawassa, Southern Ethiopia
Abstract: Background: Burn injury is one of the most common and devastating forms of trauma and a major health problem of pediatric morbidity and mortality worldwide resulting in substantial physical, psychological and economic loss. Burn-related injuries are a significant burden in children, particularly in low and middle-income countries (LMICs), where more than 90% of burn-related pediatric deaths occur [1]. The aim of this study was to assess the prevalence and treatment …
Published in Research and Reviews : Journal of Computational Biology · Vol. 7, Issue 3, 2018 · pp. 8–15 Read article
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Influence of Geographic Disparity on Lung Function in Chronic Obstructive Pulmonary Disease (COPD) Patients from Two Cities of Northern India
Abstract: Objectives: Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory lung disease associated with a notable amount of morbidity and mortality and characterized by progressive airflow obstruction. A decline in lung function, which is a hallmark of COPD, can be measured using spirometry. Yet with conflicting results, a link is found between geographical altitude and prevalence of COPD. Therefore, the main aim of this study was to assess the effect …
Published in Research and Reviews: A Journal of Health Professions · Vol. 10, Issue 1, 2020 · pp. 29–36 Read article
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Retinal Nerve Fibre Layer (RNFL) Thickness and Its Correlation with High Myopia: A Preliminary Normogram
Abstract: To evaluate the association of high myopia with Retinal Nerve Fibre Layer (RNFL) thickness especially in the peripheral retina after ruling out other causes of RNFL thinning. An observational cross-section study was conducted. Excluding concomitant ophthalmic diseases we have selected Fifty highly myopic eyes and forty emmetropic eyes for RNFL thickness measurment using the Fourier domain optical coherence tomography (FD OCT). Average thickness of RNFL in myopic eye was 87.89 …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 4, Issue 2, 2015 · pp. 31–38 Read article
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Assessment of Magnitude and Associated Factors of Adverse Birth Outcomes among Deliveries at Suhul Hospital Shire Tigray, Ethiopia from September, 2015 to February, 2016
Abstract: An adverse birth outcome is common phenomena both in developed and underdeveloped countries. Among all these adverse birth outcomes prematurity, low birth weight and stillbirth are the most common cases. Each year, about 15 million babies in the world, more than one in 10 births, are born too prematurely. More than 7% of those babies die shortly after birth; countless others suffer from lifelong physical, neurological, or educational disabilities, often …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 6, Issue 1, 2017 · pp. 1–10 Read article
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Assessment of Micronuclei in the Cultured Peripheral Blood Lymphocytes of Human Volunteers Consuming Various Forms of Tobacco in Mizoram
Abstract: Tobacco consumption is highly prevalent in Mizoram—a northeastern state of India—and it is one of the main causes of high cancer incidence. Peripheral blood was collected from 245 volunteers within the age group of 18–67 years with their informed consent and micronuclei were prepared in cultured lymphocytes by blocking cytokinesis. Binucleated (BN) cells bearing micronuclei were scored blindly under a fluorescence microscope, where a total of 3000 BN cells were …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 8, Issue 2, 2019 · pp. 17–26 Read article
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Phytochemical Screening, Proximate Analysis and Acute Toxicity Study of Ethanolic Extract of Launaea taraxacifolia on Visceral Organs of Albino Rats
Abstract: Despite increase in the acceptance of herbs for the treatment of certain diseases, there are limited information on the effectiveness, safety and toxicity of herbs. In this study, proximate analysis, phytochemical screening and acute toxicity studies on the herbal recipe, Launaea taraxacifolia were carried out. Constituents of Launaea taraxacifolia were extracted using ethanol. Phytochemical screening and proximate analysis were carried out on the extract. Fifteen (15) albino rats, divided into …
Published in Research and Reviews: A Journal of Toxicology · Vol. 4, Issue 3, 2014 · pp. 1–8 Read article
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Polymer and Polymer-Metallic Reflective Materials for Solar Thermal Applications: A review
Abstract: Reflective materials play a critical role in determining the optical and thermal performance of solar thermal systems by controlling the concentration and utilization of incident solar radiation. This review examines the application and performance of polymer-based and polymer-metallic reflective materials for solar thermal applications, with particular emphasis on their suitability for solar cookers and concentrating solar technologies. Four commonly used reflector materials—aluminum foil, anodized aluminum, Mylar (metallized polyester film), and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Analysis and Comparison of Optimization Techniques for Interference Duration in Cognitive Radio
Abstract: Cognitive radio provides opportunity to unlicensed users to use the licensed spectrum when it is not being used. Cognitive radio has several common radio performance parameters, out of which here we analyze the interference duration. Here we used genetic algorithm, particle swarm algorithm, bat algorithm based optimization techniques for the optimization of interference duration in cognitive radio. Interference duration converges to 3.08, 1.7 and 0.1534 μs corresponding to genetic algorithm, …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 3, Issue 3, 2016 · pp. 1–8 Read article
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Representative Feature Selection for Efficient Clustering
Abstract: AbstractClustering is one of the widely used data mining techniques. In machine learning, it is an unsupervised learning method that needs training data to be used. The problem with clustering is that it is computationally expensive and takes more time for grouping high-dimensional data. Therefore it is necessary to reduce number of features in the high-dimensional data in order to make the search space reduced. Many techniques came into existance …
Published in Journal Of Network security · Vol. 5, Issue 2, 2017 · pp. 19–27 Read article
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Formulation Development and Evaluation of Floating Tablets of Venlafaxine Hydrochloride
Abstract: The aim of the present study was to formulate and evaluate gastroretentive floating tablets of an antidepressant drug, Venlafaxine HCl. The matrix tablets of Venlafaxine hydrochloride were prepared by employing low viscosity grade hydrophilic polymer HPMC E15LV in combination with any one of the high viscosity grades of HPMC (K4M, K15M, and K100M) as swelling polymers. Sodium bicarbonate was employed as gas generating agent. The tablets were formulated using direct …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 6, Issue 1, 2015 · pp. 7–15 Read article