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241 articles for “High/ low density”
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Microstructural Characteristics and Mechanical Properties of the Green Composites Reinforced Bamboo Optimized the Treated Parameters
Abstract: Concrete and steel are traditional building materials with high strength and stress. They are usedeffectively in civil construction, structures of bridges and others. According to the current trend, theconstruction materials have more attention for low density and high durability which produced fromnatural materials; moreover, they are able to be recycled and reused. In this study, the green compositeswere fabricated based on the highly performance epoxy combined with bamboo to get …
Published in Journal of Polymer & Composites · Vol. 9, Issue 1, 2021 · pp. 28–38 Read article
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Design and Simulation of Z-Source Inverter Fed Brushless DC Motor Drive Supplied With Fuel Cell for Automotive Applications
Abstract: This paper presents design and simulation of Z-source inverter fed brushless DC motor drive supplied with fuel cell for automotive applications. The brushless DC (BLDC) motor are used due to many advantages such as high efficiency, high torque, high reliability, high-power density, lower maintenance compared to other motors in electric transport applications. The BLDC motor drive is with voltage source inverter (VSI) or current source inverter (CSI) because of low …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 3, 2016 · pp. 60–71 Read article
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Assessment of Noise Pollution Level in Port Harcourt City: a Location Based Comparative Study
Abstract: Noise pollution has emerged as a significant environmental health concern in urban centers, particularly in rapidly developing cities like Port Harcourt, Nigeria. This study presents a comprehensive, location-based comparative assessment of ambient noise levels across selected zones within Port Harcourt metropolis, including residential, commercial, industrial, and traffic-dense areas. Sound level measurements were conducted in the different areas of Port-Harcourt metropolis. High-density and low-density residential neighborhoods, busy roadways, business centers, road …
Published in International Journal of Environmental Noise and Pollution Control · Vol. 3, Issue 2, 2025 · pp. 7–17 Read article
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Comparative Study of Dry, Wet and MQL Lubricating Method on Aluminium 7075 Using Vertical Milling Machine
Abstract: In present time the technology of CNC vertical milling machine has been improved significantly to meet the advance requirements in various manufacturing fields, in which the major contribution is of biomedical field, automobile field and aerospace industries, so while machining to get better surface finish generally lubrication method is used, which also helps to maintain the temperature near interface of tool and workpiece. If the traditional cooling method is used …
Published in Journal of Mechatronics and Automation · Vol. 8, Issue 1, 2021 · pp. 12–19 Read article
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Review on Fatigue Analysis of Mechanical Structures Made Up of Composite Materials
Abstract: Composite materials have been widely used in aerospace, marine applications etc. because of their low density and high strength property. Aircraft wings, horizontal and vertical stabilizers of an aircraft, blades of the wind turbines are manufactured using composite materials. Fatigue occurs when a material is subjected to repeated loading and unloading. If the loads are above a certain threshold, microscopic cracks will begin to form at the surface. In this …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 4, Issue 1, 2015 · pp. 15–19 Read article
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Soil Organic Carbon Stocks in Different Land Uses at Puthupet, Tamil Nadu, India
Abstract: AbstractSoil organic carbon (SOC) stocks were assessed in different land uses i.e., Cocos nucifera, Anacardium occidentale, Mangifera indica, Casuarina equisetifolia plantations, wasteland and natural forest at Puthupet, Tamil Nadu, India using Walkley and Black’s method. The soil bulk density was found to increase significantly (P< 0.05) with the increase in soil depth in all the sites except natural forest. Highest bulk density was recorded in wasteland and the least was …
Published in Research & Reviews : Journal of Ecology · Vol. 4, Issue 3, 2015 · pp. 6–14 Read article
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Voltage Sag Mitigation Using DVR and Ultra Capacitor
Abstract: Due to the rising integration of renewable energy sources into the power system, power quality issues have recently become more significant. Voltage sags and swells are among the biggest issues with a power system, and a lot of research has been done to try to solve these issues. Equipment for power conditioning can enhance the quality of the power. Dynamic voltage restorers (DVR) are used to shield sensitive loads from …
Published in Journal of Semiconductor Devices and Circuits · Vol. 9, Issue 3, 2022 · pp. 21–31 Read article
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Microalbuminuria as an Independent Screening Tool in Patients with Myocardial Infarction
Abstract: Acute Myocardial Infarction (AMI) is a condition in which there is an inadequate supply of blood and oxygen to a portion of myocardium; most common cause being atherosclerosis of coronary vessels. Microalbuminuria (MAU) is defined as urinary albumin-to-creatinine ratio (UACR) of 30–300 mg/g. It is considered as marker of generalized endothelial dysfunction and vasculopathy and suggested to contribute to the formation of atherosclerotic lesion and ultimately leading to risk of …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 6, Issue 2, 2017 · pp. 41–45 Read article
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Health Status of Adolescents in Rural Area of Anand
Abstract: Aim: The study was carried out with the aim to access the health status of adolescents in a rural area of Anand. So far no studies were done over the rural areas of Anand District. Method: Cross-sectional study was conducted on 417 students of 13 – 15 years (283 males and 134 females). The data were collected using a semi-structured questionnaire for socio-demographic, anthropometry (Height, Weight, BMI), physical activity level. …
Published in Research and Reviews: A Journal of Health Professions · Vol. 8, Issue 3, 2018 · pp. 91s–96s Read article
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Design and Development of Fiber Sandwiched Composite Materials for the Improvement of Mechanical Properties
Abstract: This research paper presents the development and mechanical characterization of fiber sandwiched composite materials (FSCM) to address the increasing demand for high-strength, lightweight, and corrosion-resistant materials in advanced engineering sectors such as automotive, aerospace, and transportation industries. Traditional homogeneous materials such as metals, ceramics, and polymers often fail to provide a balanced combination of properties like high tensile strength, low density, toughness, abrasion resistance, and impact resistance needed for modern …
Published in Journal of Experimental & Applied Mechanics · Vol. 17, Issue 1, 2026 · pp. 22–37 Read article
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Wear Analysis of Al-SiC Composite Valve Guide by Using ANSYS: A Review
Abstract: This application of using that can promise for the future growth. To finding a wear rate of the material and comparing to the cast iron basically using in continuous life. First of all aluminum silicon carbide using in aerospace engineering, Then some few year this composite material also can be used in automobile engineering. Aluminum silicon carbide mostly used there excellent properties like high wear resistance, low density, good strength …
Published in Journal of Automobile Engineering and Applications · Vol. 2, Issue 3, 2015 · pp. 23–29 Read article
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Design and Implementation of IoT-enabled Movable Road Divider for Vehicular Traffic Control
Abstract: Road dividers are widely used to separate continuous and incoming traffic on road. This is useful for maintaining traffic flow. In this case, there are equal numbers of lanes for incoming and continuous traffic. However, in specific zones, such as industrial or shopping zones, traffic generally flows in one direction in the early morning or late at night. There is nothing or no use on the other side of the …
Published in Journal of Control & Instrumentation · Vol. 14, Issue 3, 2023 · pp. 29–35 Read article
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An Overview on Use of Plastic Waste as Road Construction Material
Abstract: The usage of plastic in our environment is expanding day by day due to rising population urbanization, evolution, activities, and changing in life manner. This waste plastic is spreading mostly on the land. This waste plastic is becoming hard job to decompose due to its non-biodegradable property. Eventually, plastics are not decomposed scientifically and potential to create soil, air, and marine pollution as well as water pollution. Therefore, the waste …
Published in Journal of Materials & Metallurgical Engineering · Vol. 12, Issue 1, 2022 · pp. 59–66 Read article
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Optimization of Indium Concentration for Obtaining Enhanced Performance of 980nm InxGa1-xAs/GaAs MQW VCSELs
Abstract: AbstractIn this work, an optimization of Indium concentration of 980 nm InxGa1-xAs/GaAs MQW VCSELs is presented with the aim of improving dynamic performance of the VCSEL. An improved modulation performance is obtained by optimizing Indium concentration of x=0.2. A high modal gain and low transparency carrier density contributes to a high optical output power for In0.2Ga0.8As/GaAs MQW VCSEL. A highest modulation bandwidth of 11.625 GHz is obtained for In0.2Ga0.8As/GaAs MQW …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 2, 2013 · pp. 14–21 Read article
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Empirical Analysis of the Effects of Owner Occupied and Tenant Occupied Housing Units on the Environmental Quality of Enugu, Nigeria
Abstract: AbstractHow occupants of housing units handle the various housing units they occupy has been identified as among the factors affecting the quality of the dwelling units of residential environment of Enugu metropolis. The actions of landlords who own and occupy their housing units in Enugu (as they concern the housing units owned and occupied) are different from those of the tenants who occupy the units on rental basis. These invariably …
Published in Research & Reviews : Journal of Ecology · Vol. 5, Issue 2, 2016 · pp. 33–41 Read article
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Properties and Recent Progress in Oxide-Based Thermoelectric Materials
Abstract: Advanced thermoelectric materials that can be used efficiently for energy conversion have received significant research interest for the last decade because of the mounting demand for sustainable and eco-friendly energy technologies. The main advantage of thermoelectric materials is their capability to directly convert the waste heat into electrical energy which makes them highly promising for the recovery of waste heat from industrial processes, automotive systems and power generation applications. Oxide-based …
Published in International Journal of Energy and Thermal Applications · Vol. 4, Issue 2, 2026 Read article
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Enhancing Mechanical and Durability Properties of Coconut Shell Concrete Using Fly Ash
Abstract: The increasing demand for sustainable and lightweight construction materials has driven research into alternative aggregates for concrete production. This study investigates the mechanical and durability properties of coconut shell (CS) concrete with varying percentages of fly ash replacement. The research evaluates compressive strength, split tensile strength, water absorption, and workability to determine the feasibility of CS concrete as a structural material. Experimental findings indicate that incorporating 10% fly ash (CSF10 …
Published in Recent Trends in Civil Engineering & Technology · Vol. 15, Issue 2, 2025 · pp. 19–24 Read article
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Exploring Carbon Nanotubes in Nanotechnology: Functional Properties, Surface Modifications, and Biomedical Innovations
Abstract: Significant progress has been made in nanotechnology in recent years, especially in the creation of sensors with a broad range of uses. Among these, carbon nanotubes (CNTs) are cylindrical structures composed of carbon, with diameters in the nanometer range. CNTs originate from graphite sheets, where the graphite layers resemble a rolled-up, continuous, and robust hexagonal mesh. These hexagons have carbon atoms at their vertices. The fabrication of CNTs typically involves …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 2, Issue 2, 2024 · pp. 24–31 Read article
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Pneumatic Car: Solution to Fossil Fuels
Abstract: AbstractUse of conventional source of energy such as petrol, diesel etc. has rapidly affected the environment by means of rapid emission of greenhouse gases such as NOx, SOx,CO2 etc. These modern sources of energy are readily available thus their consumption has increased over the years and it is assumed that after 30 years these conventional sources of energy will be completely exhausted from the modern arena, also there will be …
Published in Journal of Industrial Safety Engineering · Vol. 5, Issue 1, 2018 · pp. 18–27 Read article
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Enhancing Bituminous Mixes with Recycled Polyethylene: Performance Analysis Using Marshall Stability Test
Abstract: This study investigates the impact of incorporating recycled low-density polyethylene (LDPE) and high-density polyethylene (HDPE) in bituminous mixes for potential use in flexible pavement construction. Utilizing a Marshall Stability Test, various proportions of LDPE and HDPE were analyzed to determine optimal stability and flow characteristics. The test maintained a fixed Zycotherm content at 1.5% and varied LDPE content from 2% to 5% by weight, while HDPE content was also tested …
Published in Recent Trends in Civil Engineering & Technology · Vol. 15, Issue 1, 2025 · pp. 1–5 Read article