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318 articles for “ATM”
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Currents, Waves, and Whirls: An Academic Exploration of Fluid Mechanics
Abstract: Fluid mechanics investigates the behavior of liquids and gases in motion and at rest, revealing the principles that control natural occurrences and engineering systems alike. This article gives an easy review of essential concepts such as fluid characteristics, pressure, flow patterns, and the contrast between laminar and turbulent flow. It explores how fundamental rules, including conservation of mass and energy, impact the transport of fluids across varied settings. Through real-world …
Published in Recent Trends in Fluid Mechanics · Vol. 13, Issue 1, 2026 · pp. 8–13 Read article
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A Overview of Free Space Optical Communication (FSO)
Abstract: Free Space Optical communication (FSO) is a wireless communication system that employs light propagation across free space to transport data between two sites without the usage of fibre optic cables. It uses either lasers or light emitting diodes (LEDs) for high speed data transmission with enormous bandwidth, which makes it a desirable solution for modern communication systems. The FSO provides many advantages such as minimal installation cost, excellent security, licence …
Published in International Journal of Optical Innovations & Research · Vol. 4, Issue 1, 2026 · pp. 31–35 Read article
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Human Exploration of Mars: Challenges and Prospects for Sustainable Presence
Abstract: Human goals to Mars signify one of the most ambitious aims of present space exploration. While robotic missions have considerably extended our knowledge of the Martian atmosphere, sending humans to Mars proposes an extensive range of difficult hardships that must be tackled before such missions can become a reality. This review paper examines the most significant technical, biological, psychological, and logistical challenges associated with human exploration of Mars. The most …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 15, Issue 2, 2026 Read article
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The Emerging Golden Age of Astrophysics: Progress, Discoveries, and Future Directions
Abstract: The period between 2024 and 2026 has marked a transformative era in astrophysics, fundamentally reshaping our understanding of the universe and its underlying physical mechanisms. Significant advancements in observational astronomy, computational modeling, and space exploration technologies have enabled scientists to investigate cosmic phenomena with unprecedented precision. Among the most groundbreaking achievements, the James Webb Space Telescope (JWST) has provided high-resolution infrared observations that revealed the large-scale distribution of dark matter, …
Published in International Journal of Universe · Vol. 2, Issue 1, 2026 · pp. 6–9 Read article
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Polymeric Materials in the Anthropocene: Environmental Accumulation, Human Health Concerns, and Cultural Response
Abstract: Polymers made via conventional techniques are very useful because of their strength, adaptability, and cheap. Plastics are not degradable naturally, which creates lots of environmental issues. As plastic products degrade over time, they decompose into microplastics which enter the environment. These microscopic particles called microplastics have been identified in agricultural soils, freshwater and marine environments, and atmospheric dust, enabling their continuous movement through ecosystems and food webs. Recent research shows …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 1016–1034 Read article
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Synthesis and Evaluation of MgO-Supported Activated Carbon for Carbon dioxide Capture
Abstract: Carbon dioxide (CO₂) capture has emerged as a critical strategy for mitigating greenhouse gas emissions and addressing global climate change. In this study, a series of MgO-supported activated carbon adsorbents containing 2, 4, 6, 8, and 10 wt% MgO were successfully synthesized using the impregnation method to evaluate their CO₂ adsorption performance. The structural, chemical, and surface properties of the prepared materials were characterized using powder X-ray diffraction (PXRD), Fourier-transform …
Published in Journal of Catalyst & Catalysis · Vol. 13, Issue 3, 2026 · pp. 53–57 Read article
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Metamaterial-Based Thermal Shielding Structures for Reusable Hypersonic Space Transportation Systems
Abstract: The rapid development of reusable hypersonic space transportation systems has intensified the need for advanced thermal protection technologies capable of withstanding extreme aerodynamic heating conditions encountered during atmospheric re-entry and sustained hypersonic flight. Conventional thermal shielding materials often suffer from high structural weight, limited adaptability, thermal fatigue, and degradation under repeated thermal cycling. This study proposes a novel Metamaterial-Based Thermal Shielding Structure for Reusable Hypersonic Space Transportation Systems, integrating engineered …
Published in Journal of Aerospace Engineering & Technology · Vol. 16, Issue 2, 2026 Read article
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Holographic Beam Switching and Intelligent Routing for Terahertz Space-Air-Ground Integrated Networks
Abstract: The rapid evolution of sixth-generation (6G) and beyond communication technologies necessitates highly adaptive, ultra-high-capacity, and low-latency networking frameworks capable of supporting global connectivity across terrestrial and non-terrestrial domains. This study proposes a novel holographic beam switching and intelligent routing framework for terahertz (THz) Space-Air-Ground Integrated Networks (SAGINs). The proposed architecture leverages holographic beamforming techniques to dynamically manipulate electromagnetic wavefronts, enabling precise beam steering, reduced interference, and enhanced spectral efficiency in …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 13, Issue 2, 2026 Read article
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Photosynthetic Living Plant–Integrated Cybernetic Sensors for Autonomous Environmental Intelligence
Abstract: The increasing demand for sustainable and autonomous environmental monitoring systems has motivated the development of biologically integrated sensing technologies that combine living organisms with advanced cybernetic intelligence. This study proposes a novel framework of Photosynthetic Living Plant–Integrated Cybernetic Sensors for Autonomous Environmental Intelligence, where living plants act as self-sustaining sensing platforms capable of continuously monitoring environmental conditions without external energy sources. By integrating bioelectrical signal acquisition modules, flexible nanomaterial electrodes, …
Published in Recent Trends in Sensor Research & Technology · Vol. 13, Issue 2, 2026 Read article
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Understanding the Role of Remote Sensing Techniques in Monitoring Air Quality for Effective Adherence to Environmental Impact Assessment Practices in Nigeria
Abstract: The paper reviews the Nigerian Environmental Impact Assessment (EIA) Act, outlining the established air quality thresholds and emission caps for stationary sources. The standard applies to; common pollutants like sulphur dioxide, carbon monoxide, ozone, particulate matter and nitrogen oxides; toxic metals such as arsenic, nickel, cadmium and mercury; as well as volatile organic compounds, ammonia, antimony, zinc, formaldehyde and radon.It also describes the major classifications of remote sensing applications, including …
Published in International Journal of Satellite Remote Sensing · Vol. 4, Issue 2, 2026 Read article
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Implementation of Kalman Filter Using TDC and PLL for Object Detection and Tracking in Signal Processing
Abstract: The measurement uncertainty of GPS receivers is dependent on a wide range of external factors, including receiver clock precision, thermal noise, atmospheric influences, and minute variations in satellite positions. Estimating hidden states precisely and accurately in the face of uncertainty is one of the main problems facing tracking and control systems. Among the most significant and widely used estimate methods is the Kalman Filter. It uses imprecise and erratic measurements …
Published in Current Trends in Signal Processing · Vol. 13, Issue 2, 2023 · pp. 38–47 Read article
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A Study of Air Pollution on Biomes
Abstract: The air pollution adversely affect the health of living beings both plant as well as animals.This paper demonstrates the study done on the living beings when they are exposed to constant smoke and dirt and unwanted fumes present in the atmosphere.The paper tells how the polluted air rich in CO causes choking in humans and prolong exposure to polluted air ultimately leads to death.The paper also focuses on ways to …
Published in Emerging Trends in Chemical Engineering · Vol. 5, Issue 2, 2018 · pp. 22–26 Read article
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Synthesis of Biodiesel with Methanol Recovery in Reactive Distillation
Abstract: In the present study, biodiesel was synthesized from waste vegetable oil, methanol and catalyst. The present work investigates the use of reactive distillation for continuous production and separation of biodiesel with recovery of excess methanol as top product of acceptable purity. In order to determine the best conditions for biodiesel production by reactive distillation, process parameters such as molar ratio of oil to alcohol, reaction temperature, catalyst concentration (0.5–1.5 wt …
Published in Emerging Trends in Chemical Engineering · Vol. 3, Issue 1, 2016 · pp. 26–31 Read article
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Optimization of Process Parameters for Isopropylation of Toluene over Modified Zeolite using Response Surface Methodology
Abstract: Vapor-phase isopropylation of toluene with isopropanol has been investigated in a fixed-bed flow reactor under atmospheric pressure using N2 carrier gas over Cerium modified 13X zeolite catalyst. The main product of this alkylation reaction was p-cymene followed by meta-isomer, while ortho-cymene was negligibly formed. Response surface methodology was used to study the combined effects of temperature, reactant molar ratio and space time on the conversion of toluene and selectivity of …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 1, 2014 · pp. 22–30 Read article
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Rice Husk Energy Content Enhancement by the Torrefaction Process: Characterization and Statistical Studies
Abstract: Torrefaction is the partial pyrolysis of biomass at atmospheric pressure, in an inert environment. The objective of this study is to torrefy the rice husk of Ethiopian origin in order to enhance its energy density. The optimum torrefaction temperature, holding time, and acid concentration were investigated in this study by the three-level-three-factor Box-Behnken Design (BBD) using the Design-Expert 7.0.0 software.
Published in Emerging Trends in Chemical Engineering · Vol. 7, Issue 1, 2020 · pp. 1–4 Read article
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Recording of Leakage-free Surface-Driven Capillary Flow of Dyed Water in the Dual Sudden Contraction Microchannels
Abstract: Dual sudden contractionpolymethylmethacrylate (PMMA) microchannels are fabricated by the maskless lithography, hot embossing lithography, direct bonding technique, and atmospheric pressure air dielectric barrier discharge (DBD) plasma processing. The surface-driven capillary flow of dyed water is faster on the processed PMMA surface than the pristine PMMA surface. The surface-driven capillary flow of dyed water is slower in the wider portion and faster in the narrower portion of any dual sudden contraction …
Published in Emerging Trends in Chemical Engineering · Vol. 4, Issue 2, 2017 · pp. 40–44 Read article
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TiO2-ZrO2 Supported Nickel Oxide Catalysts for Hydrogenation of Levulinic Acid to -Valerolcatone
Abstract: The Titania-Zirconia (TZ) mixed oxide sample (50:50 wt.% percent) was prepared by a simple coprecipitation method and used as a support for the nickel catalyst. The various loadings of nickel content from 1 to 20 wt.% were synthesized for the production of γ-valerolactone (GVL) from levulinic acid (LA). Among all the tested samples, the 5 wt.% Ni/TZ sample exhibited the 98% conversion of LA and 96% selectivity to GVL and …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 3, 2022 · pp. 35–44 Read article
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A Vehicle Emission Tax Model: To Promote Adoption of Zero Emission Vehicles for Indian Context
Abstract: Vehicle tailpipe emissions have been regulated by the authorities over the period of time forcing vehicle manufacturers in improving engine technologies to comply with the government stipulated norms. Improvement in engine designs has reduced vehicle tailpipe emissions to the extent of emissions to meet the notified norms. Historically, such a reduction in vehicle emissions has been achieved in steps/stages as and when new emission norms were notified. It is proposed …
Published in Journal of Automobile Engineering and Applications · Vol. 6, Issue 3, 2019 · pp. 1–10 Read article
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Design And Development of Automatic Headlights for Two-Wheelers
Abstract: The headlights plays a pivotal role while travelling during night on highways. They help the driver in understanding the environment by giving a clear front picture about the objects thus contributing to no accident situation. On long drives during night/bad weather the driver finds difficult in continuous switching from high/low beam at various external environment condition such speed, weather sunlight wind etc. Due to this annoyance of shifting of headlights …
Published in Journal of Automobile Engineering and Applications · Vol. 9, Issue 1, 2022 · pp. 12–17 Read article
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Manufacturing of EV Kit for Vehicles
Abstract: No one electric vehicle technology, including battery type, propulsion system, and vehicle design, currently serves as the industry standard. The challenges that competing technical systems must overcome in terms of manufacturing and infrastructural requirements are looked at in this article along with reviews of the top governmental and commercial electric car research initiatives worldwide. An IC engine-powered vehicle is simply converted into an electric-powered vehicle to create the electric scooter. …
Published in Journal of Automobile Engineering and Applications · Vol. 9, Issue 2, 2022 · pp. 59–64 Read article