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345 articles for “Pressure”
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A Review of Combustion Modeling Techniques for IC Engines: CFD Simulations and Experimental Correlations
Abstract: For a long time, internal combustion (IC) engines have been the mainstay of power generating and transportation systems. However, a move toward cleaner and more efficient engine technologies has been spurred by stricter pollution restrictions and growing environmental concerns. In this context, combustion modeling has emerged as a critical tool for understanding in-cylinder processes and improving engine performance. This review focuses on the evolution and application of various combustion modeling …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 11, Issue 1, 2025 · pp. 13–20 Read article
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Effects of Two Parameters Foundation on Uniform Elastic Beam Subjected to Concentrated Moving Loads with Clamped-Clamped Boundary Conditions
Abstract: AbstractThis study endeavors to explore the impacts of two foundational parameters on the dynamic response of a uniform elastic beam subjected to a concentrated moving load under clamped-clamped boundary conditions. The investigation employs the generalized Fourier integral transform alongside a series representation of the Dirac-Delta function, a modified version of Struble’s asymptotic method, and integral transformation techniques in tandem with convolution theory to derive solutions to the dynamic problem. The …
Published in International Journal of Mechanics and Design · Vol. 11, Issue 1, 2025 · pp. 15–28 Read article
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Pollutant Emissions, Performance and Combustion Characteristics in Diesel Engines at High Altitudes: A Review
Abstract: At high altitudes, majority of the engines tend to have less power output since the increase in altitude which directly results in lack of oxygen content present in the atmosphere. This paper presented to come up with a systematic work carried out on the existing research efforts regarding the effects of altitude on engines, the changes or modifications that can be applied for the enrichment of oxygen, the design parameters, …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 11, Issue 1, 2025 · pp. 37–50 Read article
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Analysis of Optimal Clearance Volume Between Two Concentric Cylinders in a Couette Flow Membrane Module Using a Computational Fluid Dynamics Approach
Abstract: Membrane-based separation has become an integral part of the separation industry due to its diverse applications across various fields. However, this progress is often hindered by two major challenges: fouling and concentration polarization. Many membrane modules have made significant efforts to overcome these obstacles, yet a satisfactory solution to mitigate these issues and facilitate membrane-based processes in the separation industries is still needed. These issues are successfully handled using Dynamic …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 1, 2025 · pp. 135–143 Read article
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Design and Optimization of Gas Turbine Blades for High-Temperature Operations
Abstract: Abstract The design and optimization of gas turbine blades for high-temperature operations are critical to enhancing the efficiency and reliability of power generation and propulsion systems. These components operate under extreme conditions of heat, pressure, and mechanical stress, making their performance pivotal to the overall effectiveness of turbines. This study explores the key factors influencing blade performance, emphasizing the importance of material selection, thermal barrier coatings, aerodynamic design, cooling mechanisms, …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 10, Issue 2, 2024 · pp. 22–27 Read article
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A Study on Stress Analysis of Aluminum Alloy Solidified in Metallic Molds
Abstract: Abstract The casting technique is regarded as the primary manufacturing process. It has several process parameters that affect the cast structure. Mold geometry is considered one of the most important metal parameters to cast. In the current work, the influence of mold geometries on mechanical properties (deformation and stress concentration) of liquid Aluminum alloy solidified in the steel mold is assessed using ANSYS simulation software. Molds were subject to a …
Published in International Journal of Manufacturing and Materials Processing · Vol. 10, Issue 2, 2024 · pp. 10–15 Read article
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Optimizing Power Output in Solar Chimney Power Plants: Influence of Collector Area and Chimney Height
Abstract: This research paper investigates the crucial factors that determine the power output of solar chimney power plants, specifically the collector area and chimney height. A larger collector area efficiently gathers and heats a larger volume of air, and a steeper chimney height raises pressure differences via the stack effect, resulting in greater power generation. The study explores the significance of heat retention within the collector area, enabling continuous operation, even …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 11, Issue 1, 2025 · pp. 27–36 Read article
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A Review on Bio-Oil Production from Agricultural Waste Based on Various Processes, Bio-Oil Yield and Energy Recovery
Abstract: Agricultural waste generated through cultivation of crops, vegetables, fruits, and poultry can pollute the environment and affect the health of both humans and animals. Traditionally, most agricultural wastes are either burned or disposed of in landfills which cause acute environmental pollution. These easily accessible and underutilized agro-wastes remain a potential resource for biofuel production. This review analyses several thermochemical and biochemical methods encompassing pyrolysis, gasification, and hydrothermal carbonization (HTC) and …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 11, Issue 1, 2025 · pp. 9–19 Read article
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Some Thermal Properties of Banana (Musa acuminata) Peels Bonded Waterlily (Nymphaea lotus Linn.) Briquettes
Abstract: The purpose of the study was to determine how the amount of binder affected the ignition time and rate of burning of fuel briquettes made from a blend of banana (Musa acuminata) and waterlily (Nymphaea lotus Linn.) peels at varying binder ratios (0, 20, 40, 60, and 80% by weight of each feedstock). Before the briquettes were expelled for additional research, the homogenous feedstock was compressed by a hydraulic press …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 11, Issue 1, 2025 Read article
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A Randomized Controlled Trial to Evaluate the Impact of Heparin Saline and 0.9% Sodium Chloride on Maintaining Central Venous Catheter Patency in Critically Ill Patients at PGIMS, Haryana
Abstract: Background: Central venous catheters (CVCs) are frequently utilized in healthcare environments, especially within intensive care units (ICUs), for various medical purposes. They are inserted to facilitate the delivery of fluids, blood products, medications, parenteral nutrition, as well as for monitoring central venous pressure and performing dialysis. Objectives: The main objective of the study was to assess the effectiveness of heparin saline compared to 0.9% sodium chloride in ensuring the patency …
Published in International Journal of Nursing Critical Care · Vol. 11, Issue 1, 2025 Read article
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An Investigation into the Impact of Progressive Muscle Relaxation on Anxiety Levels Among Nursing Students at a Selected Nursing College in Haryana, India
Abstract: Background: Nursing students often encounter significant anxiety throughout their educational journey. Key factors include heavy academic workloads, unclear assignments, and demanding shift schedules, personal and professional anxiety. Beyond these academic pressures, relationships with faculty, clinical experiences, and time constraints can also contribute to their anxiety levels. This anxiety can adversely impact student's performance if not managed effectively. Progressive Muscle Relaxation (PMR) is a well-regarded technique for alleviating anxiety, as it …
Published in International Journal of Neurological Nursing · Vol. 11, Issue 1, 2025 · pp. 1–7 Read article
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Analytical Evaluation of Injectable Pain Relievers for Enhanced Post-Operative Care
Abstract: One hundred ASA I and II patients undergoing general and gynecological procedures were randomly divided into two groups of 50, each receiving a different analgesic treatment. Vital parameters, including heart rate, respiratory rate, oxygen saturation (SpO₂), blood pressure, sedation levels, pain scores (VAS), side effects, and the need for rescue analgesics, were measured at intervals of 0–4, 5–12, and 24 hours post-surgery. The findings indicate that one of the tested …
Published in International Journal of Green Chemistry · Vol. 11, Issue 2, 2025 · pp. 1–14 Read article
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Postoperative Pain Management: Understanding the Role of NSAIDs and Analgesics
Abstract: Postoperative pain management is a critical aspect of clinical care, with a significant impact on patient recovery and quality of life. Among the pharmacological options available, Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) and acetaminophen (paracetamol) are widely utilized due to their distinct chemical properties and mechanisms of action. This study aims to evaluate and compare the efficacy of intravenous paracetamol (C₈H₉NO₂) and diclofenac (C₁₄H₁₁Cl₂NO₂) in postoperative analgesia, focusing on their pharmacokinetic profiles, …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 11, Issue 1, 2026 · pp. 36–42 Read article
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The Role of Intravenous Drug Agents in Postoperative Analgesia: A Chemical Evaluation
Abstract: This study evaluates the efficacy of two commonly used injectable pain-relieving agents in post- operative care, aiming to optimize pain management protocols and enhance patient recovery. One hundred ASA I and II patients undergoing general and gynecological procedures were randomly divided into two groups of 50, each receiving a different analgesic treatment. Vital parameters, including heart rate, respiratory rate, oxygen saturation (SpO₂), blood pressure, sedation levels, pain scores (VAS), side …
Published in International Journal of Analytical and Applied Chemistry · Vol. 11, Issue 2, 2025 Read article
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Optimizing Gas Turbine Performance: Preventive Measures and Blade Durability Solutions
Abstract: The article explores the various failure mechanisms and preventive methods related to gas turbine blades, which operate under extreme mechanical and thermal conditions. The increasing demand for energy and efficiency in turbojet engines has led to larger and more complex turbomachines. As gas turbine blades are subjected to high operational temperatures, pressure, and stress, they are prone to multiple failure modes, including fatigue, creep, oxidation, corrosion, and erosion. To mitigate …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 10, Issue 2, 2024 · pp. 36–40 Read article
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Thermal Dynamics and Kinetic Modelling of Cryogenic Fuels in Aerospace and IndustrialApplications
Abstract: Cryogenic fuels are critical for high-speed aerospace and industrial applications, where efficient handling, storage, and usage are paramount for performance and safety. This study explores the thermal dynamics and kinetic modeling of cryogenic fuels, focusing on liquid handling systems and propellant technologies. Utilizing computational fluid dynamics (CFD) analysis, the research evaluates the behavior of cryogenic liquids within insulated vessels under extreme temperature conditions, identifying key parameters that influence thermal stability …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 10, Issue 2, 2024 Read article
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Optimizing Dyeing Processes for Nylon: A Study onUltrasonic and Natural Dye Application
Abstract: This study focuses on the application of natural dyes, specifically those derived from onion (Allium cepa) extracts, for dyeing nylon fabric, while assessing the impact of different mordants, including potassium dichromate, copper sulfate, and alum. The research explores the effectiveness of High Temperature High Pressure dyeing techniques to enhance dye uptake and color fastness. Natural dyes, traditionally viewed as less effective than synthetic counterparts, are being reevaluated for their eco-friendly …
Published in International Journal of Green Chemistry · Vol. 10, Issue 2, 2024 · pp. 9–15 Read article
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Stabilization of Foundation Base Soil for Enhanced Bearing Capacity and Lateral Load Resistance
Abstract: Abstract The foundation of any structure plays a pivotal role in ensuring its stability and durability. The soil beneath the foundation must possess sufficient bearing capacity to support the structure's load, while also resisting the uplift pressure exerted by groundwater, especially in saturated conditions. Inadequate bearing capacity can lead to settlement or even structural failure. Additionally, the surrounding soil must be stabilized to prevent lateral movement and ensure the foundation's …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 10, Issue 2, 2024 · pp. 28–33 Read article
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Assessment of Foundation for Pier
Abstract: AbstractThe design and assessment of pier foundations are crucial due to the substantial loads they mustsupport. Piers are subjected to significant structural and dynamic loads, requiring a robustfoundation system to ensure stability and prevent excessive settlement or failure. A mat foundation istypically selected to distribute these heavy loads over a large area, minimizing pressure on theunderlying soil. The bearing capacity is assumed to be based on the presence of a …
Published in International Journal of Structural Engineering and Analysis · Vol. 10, Issue 2, 2024 · pp. 1–8 Read article
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Thermodynamic of Biomass Pyrolysis of RenewableEnergy Production
Abstract: Biomass pyrolysis is a pivotal thermochemical process for converting organic materials into valuable biofuels and chemicals, playing a critical role in the renewable energy landscape. This study explores the thermodynamic principles underlying biomass pyrolysis, emphasizing its potential for sustainable energy production. In this process, biomass is thermally broken down in the absence of oxygen, producing syngas, biochar, and bio-oil. Thermodynamic analysis provides insights into the energy requirements, reaction pathways, and …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 10, Issue 1, 2024 Read article