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72 articles for “heterogeneity”
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Design and Optimization of Heterogeneous Catalysts for Green Chemistry Processes
Abstract: The design and optimization of heterogeneous catalysts are critical for advancing green chemistry processes, aiming to minimize environmental impact while maximizing efficiency. This study explores innovative strategies for the development of heterogeneous catalysts that facilitate environmentally benign reactions. By integrating principles of catalyst design, surface science, and reaction engineering, we aim to enhance catalytic performance, selectivity, and stability. Catalyst composition and structure, investigating novel materials, including metal-organic frameworks (MOFs), zeolites, …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 10, Issue 1, 2025 · pp. 42–48 Read article
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A Review of Energy-Efficient Base StationManagement in Heterogeneous Cellular Networks
Abstract: The amount of energy used of cellular networks for communication has dramatically grown due to the quick expansion of mobile data usage and the extensive use of next-generation wireless technologies. Among various network components, base stations account for the largest share of power usage, making energy-efficient management an important research area in heterogeneous cellular networks (HetNets). This review paper presents a comprehensive overview of recent developments in energy-efficient base station …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 12, Issue 1, 2026 · pp. 1–13 Read article
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Production of Waste Animal Bone as a Heterogeneous Solid Base Catalyst for Transesterification of Jatropha Oil
Abstract: Heterogeneous catalyst plays a vital role in transesterification process, especially in view of cost and reusability. In this study, heterogeneous solid base catalyst was prepared by impregnating the waste animal bone with different weight percent (wt%) KOH solution followed by drying and calcination at 900 °C for 3 hr. Having screened the catalytic performance and basicity of animal bone loaded with different K-compounds, 12 wt% KOH loaded on animal bone …
Published in International Journal of Chemical Separation Technology · Vol. 5, Issue 1, 2019 · pp. 28–48 Read article
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Monitoring Fungi Transport Influenced by Heterogeneous Porous Sand Gravel Formation in Coastal Area of Port Harcourt
Abstract: This paper monitors the transport of fungi concentration in sand gravel formation, the formation were observed to develop heterogeneity in porous deposited strata, the migration process of fungi were observed from the simulation values through graphical representation, fluctuation of fungi concentration were experienced on the process of migration in exponential phase, the deposition of micronutrients were found to be under fluctuation in the soil thus affect the growth rate of …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 1, 2018 · pp. 49–57 Read article
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PLASTICITY EVALUATION ON THE HETEROGENEITY OF SAND AND SILTY CLAY FORMATION IN DELTAIC ENVIRONMENT
Abstract: This paper evaluates the level of heterogeneity impact of atterberg limit of the formation; the study analyzed eight locations to determine their plastic limit, liquid limits and plastic index, values generated from different location reflect the behaviour of sand and silty clay base on the experimental data, fluctuation were experiences from 0.2 – 2.5m in all the locations, it generated the lowest and the highest range from LL30-45, PL, 21-31, …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 5, Issue 2, 2019 · pp. 15–22 Read article
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Influence of Road Geometry and Traffic Characteristics on Highway Crash Frequencies under Heterogenous Traffic Conditions
Abstract: Abstract This study aims at modeling the influence of highway geometric and traffic characteristics on road crash frequency under heterogenous traffic conditions using the Negative Binomial regression technique. Over a span of three years, data from 618 road accidents on the Dhaka–Aricha highway (N5) in Bangladesh were analyzed to develop the model.. The model variables include Annual Average Daily Traffic (AADT), % of heavy vehicle and non-motorised vehicles (NMV), pavement …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 11, Issue 2, 2025 · pp. 25–34 Read article
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Two Wheeler Adjustment Factor to Estimate Queue Length at Signalized Intersection under Heterogeneous Traffic Conditions
Abstract: The two-wheeler adjustment factor derived in the present study to predict queue length at approaches of signalized intersections in mixed traffic conditions. The statistical distribution investigation carried out to understand the queuing behavior by using observed queue length obtained from the field. Field data was collected at Suchitra and KBR park intersections in Hyderabad City by using video graphic technic. Highway Capacity Manual (2010) adopted for estimating queue length with …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 7, Issue 2, 2021 · pp. 15–21 Read article
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Synthesis and Characterization of Poly(etherdiphenylene terephthalamide)-Metal Complexes in Heterogeneous Medium
Abstract: Condensation of terephthalic acid and 4,4ʹ-diaminodiphenyl ether resulted in aminoterminated oligomeric poly(etherdiphenylene terephthalamide) (PODTA) using phosphorylation technique. Schiff base complexes of this polyamide were synthesized with salicylaldehyde and 2-hydroxy-1-naphthaldehyde complexes of Co(II),Ni(II) and Cu(II). All the synthesized polyamide as well as Schiff’s base complexes were characterized by elemental analysis, IR spectroscopy and magnetic susceptibility measurements. Thermal stabilities of ligand and its various complexes were compared by thermogravimetric analysis. While, Co(II) …
Published in International Journal of Polymer Science and Engineering · Vol. 2, Issue 1, 2016 · pp. 13–19 Read article
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Evaluation of Improved Sorghum Varieties (Sorghum Bicolor L. Moench) for GrainYield at Midland Areas of Derashe and Gerese Districts, South Ethiopia
Abstract: One of the main elements restricting a variety's ability to respond in a breeding program is the environment. This is why, in 2021 and 2022 at Derashe and in 2022 at Gerese, five improved sorghum varieties and one standard check were assessed to find more productive midland sorghum types. A randomized complete block with three replications was used in the experiment. Significant differences between treatments of the investigated variables were …
Published in International Journal of Analytical and Applied Chemistry · Vol. 11, Issue 1, 2025 · pp. 16–21 Read article
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Predicting the Influence of Permeability’s on Settlement of Shallow Foundation
Abstract: Foundation settlement rose as soil permeability increased, excess pore pressure increased with depth, and decreased as shear modulus increased. The expanding soil cycle (shrinkage and expansion) that is principally responsible for foundation settlement is strongly related to water content. The application of modeling and simulation was used to monitor the effect of various soil properties on foundation settlement. But the focus of this study is on Permeability including other soil …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 9, Issue 1, 2023 · pp. 36–54 Read article
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Efficient Energy Management in Wireless Sensor Network
Abstract: This paper studies the impact of node heterogeneity of wireless sensor networks that are hierarchically clustered in terms of energy. Some nodes, in this network become cluster head and aggregate the data of fellow clusters and then transmit it to the sink. It is expected that a level of the number of inhabitants in sensor hubs is outfitted with extra vitality assets this is a wellspring of heterogeneity which may …
Published in International Journal of Digital Communication and Analog Signals · Vol. 4, Issue 2, 2018 · pp. 17–23 Read article
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Fog Computing Architecture and Deployment in IoT
Abstract: The relentless proliferation of Internet of Things maneuvers generates colossal volumes of data at the network edge, straining traditional cloud-centric paradigms with inherent limitations in latency, bandwidth, resilience, and privacy. This necessitates a paradigm shift towards distributed intelligence. Fog Computing arises as a pivotal architectural paradigm, extending computational, storage, and networking capabilities closer to the data source, thereby mitigating latency, reducing bandwidth consumption, and enhancing real-time processing capabilities for critical …
Published in International Journal of Distributed Computing and Technology · Vol. 11, Issue 2, 2025 · pp. 31–39 Read article
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Wireless Sensor Networks and Its Clustering Algorithm
Abstract: Distributed sensor nodes that gather and send data wirelessly make up Wireless Sensor Networks (WSNs), which are crucial for several applications, including industrial automation, smart cities, healthcare, and environmental monitoring. However, effective data transfer and network management are crucial issues because of their constrained battery life and processing power. By grouping sensor nodes, lowering energy usage, and extending network lifespan, clustering algorithms are essential for improving network efficiency. To reduce …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 1, 2025 · pp. 1–7 Read article
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Monitoring Nature of Nairobi City Land Features from Landsat 5 Images Using Index-Based Mapping
Abstract: Urban environments are complex and heterogeneous ecosystems characterized by mixed land use and land cover (LULC). They form important centers of social integration and generation of national wealth. However, urban areas especially in developing countries suffer from poor planning; mismanagement and uncoordination. Evaluation of dynamics driven by LULC changes in these ecosystems is key in management of urban areas. In evaluating urban environments, land use and land cover mapping using …
Published in International Journal of Urban Design · Vol. 1, Issue 1, 2018 · pp. 1–11 Read article
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Mathematical Model to Monitor Concrete Compressive Strength Partially Replaced with Periwinkle and Palm Kernel Shell as Aggregate
Abstract: This research work monitor that application of periwinkle and palm kernel shell as partial replacement for aggregate, the study are carried out applying modeling and simulation techniques, concrete are normally heterogeneous in most cases, but the study try to examine the growth rate of the material on their compressive strength, such process were carried out using these two locally sourced material at different percentage of replacement for aggregate, the study …
Published in International Journal of Construction Engineering and Planning · Vol. 9, Issue 2, 2023 · pp. 6–28 Read article
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Effect of encroaching vehicles on capacity of signalized intersections in mixed traffic conditions
Abstract: This paper estimates capacity of signalized intersections in heterogeneous traffic conditions considering the effect of encroaching vehicles. Accurate estimation of capacity of signalized intersections plays vital role in evaluating performance of whole road network. In the present paper two sets of saturation flow values are estimated separately by considering and not considering the effect of encroaching vehicles. Also, the capacity of the signalized intersections is found considering the effect of …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 6, Issue 1, 2020 · pp. 1–8 Read article
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Analysis of Existing Traffic Condition of Pabna City, Bangladesh: A Case Study
Abstract: This study investigated traffic condition of Pabna city main road Bangla clinic to Nimtola. The road connects the city center with bus terminal and railway station. For this, the study route was segmented and four stations were assumed. Traffic counting was conducted at each station as per RHD guideline. The type and classification of the existing vehicles was also done as per the guideline. Traffic data collection was conducted for …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 8, Issue 1, 2022 · pp. 18–32 Read article
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Implementation of Energy Efficient Protocol in Wireless sensor Network
Abstract: Wireless sensor network (WSNs) are network of sensor nodes one of current concerns is developing a stable clustered heterogeneous protocol prolonging the network lifetime with minimum consumption of battery power. In the recent times, many routing protocols have been proposed increasing the network lifetime, stability in short advising a reliable and robust routing protocol. In this paper we examine the impact of hierarchical clustered network with sensor nodes of two-level …
Published in International Journal of Analog Integrated Circuits · Vol. 6, Issue 2, 2020 · pp. 21–29 Read article
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Nanocatalyst for Transesterification of Fatty Acids into Biodiesel
Abstract: Global fuel consumption is increasing exponentially due to the ever increase in rate of industrial development. The continued usage of fossil fuels leads to severe environmental concerns and poses threat to the entire mankind. Biodiesel has gained more attention due to the rapid exhaustion of the fossil fuels and increase in price of conventional petroleum products. Transesterification of fatty acids from animal fat, vegetable oils, waste cooking oil, algae and …
Published in International journal of Nanobiotechnology · Vol. 1, Issue 1-2, 2015 · pp. 1–4 Read article
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Autonomous Multi-Agent Sensor Network for Distributed Environmental Instrumentation
Abstract: Environmental monitoring requires intelligent, scalable, and autonomous instrumentation systems capable of continuously sensing, processing, and communicating heterogeneous data under dynamic conditions. This study proposes an Autonomous Multi-Agent Sensor Network for Distributed Environmental Instrumentation, integrating distributed sensor nodes, edge computing, multi-agent collaboration, adaptive data fusion, and intelligent decision-making to achieve reliable real-time monitoring of environmental parameters. Each sensor agent autonomously performs local sensing, anomaly detection, energy-aware communication, and cooperative information exchange …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 12, Issue 2, 2026 Read article