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111 articles for “AAS”
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Kalina Cycle Thermal Analysis Using Heat Recovery Process
Abstract: It is not possible to measure very high temperature with help of physical temperature measuring probes, so in order to get temperature of flue gases, inverse heat transfer theory is applied. Measuring the temperature on outside wall of pipe from which flue gases are going out, it is possible to get calculated values of flue gases (which is not possible to get with physical probe) using inverse heat transfer analysis. …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 4, Issue 2, 2018 · pp. 39–47 Read article
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Compliance & Practices Related to Inhalation Therapy (MDI/DPI) Among Asthma Patients
Abstract: BackgroundAsthma is respiratory disease characterized by acute episode of spasm of bronchi in lungs leading to difficulty in breathing.Most often it is related to theallergic reaction of airways.It is treated with inhalation therapy that is metered dose inhaler (MDI) and dry powder inhaler (DPI).However, the desired treatment outcomes are not observed due to ineffective compliance and practices of MDI /DPI (metered dose inhaler and dry powder inhalers)Aims and objectivesAssess the …
Published in International Journal of Medical Surgical Nursing · Vol. 3, Issue 1, 2020 · pp. 25–31 Read article
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A Study To Assess The Knowledge And Attitude Regarding Human Rights Of Mentally Ill Among The Staff Nurses Working In Selected Hospital For Mental Health Of Gujarat State With A View To Develop An Information Booklet
Abstract: The study was aimed to assess the knowledge and attitude regarding Human Rights of Mentally ill among the Staff Nurses working in selected hospital for mental health of Gujarat state. A descriptive cross-sectional survey design was implied in the study. Convenient sampling method was used to select 100 samples. A 40 question Structured Knowledge Questionnaire was used to assess knowledge and 20 question Likert Attitude Scale was used to assess …
Published in International Journal of Neurological Nursing · Vol. 4, Issue 1, 2018 · pp. 1–7 Read article
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Medicinal Application of Nano Composites of Al 8081 Alloy/Tib2 in Acid Chloride and Neutral Chloride Mediums at Laboratory Temperature
Abstract: Nanomaterials are at the leading edge of the rapidly growing subject of nanotechnology. Their precise size-dependent homes make these materials advanced and imperative in any areas of human activity. This brief review tries to summarise the maximum latest developments in the subject of carried out nanomaterials, specially their application in biology and medicine, and discusses their commercial is at ion prospects. This paper evaluates corrosion properties of TiB2/Al8081 alloy immediately …
Published in International Journal of Composite and Constituent Materials · Vol. 6, Issue 1, 2020 · pp. 8–14 Read article
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Effect of Some Physical Properties on the Swelling Behaviour of Biomass Membranes
Abstract: The membranes of Detarium microcarpum seeds (DMS) and Alfzelia africana seeds (AAS) were developed. The water uptake capacities for DMS and AAS were found to be 500% and 390% respectively. The percentage of water uptake by Detarium microcarpum membrane and Alfzelia africana membrane, both increased with increased in the concentration of DMS and AAS as well as pH. The effect of contact time on water uptake showed that the water …
Published in International Journal of Composite Materials and Matrices · Vol. 2, Issue 2, 2016 · pp. 8–15 Read article
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Experimental Investigation of FSW on Al 6061-T6 MG Dissimilar Joints
Abstract: Friction Stir Welding (FSW) is a solid-state joining technique that has shown significant potential for welding dissimilar materials, such as aluminum and magnesium alloys, which are difficult to join using conventional fusion welding methods due to large differences in their physical, thermal, and metallurgical properties. During FSW, contact between the rotating, wear-resistant tool shoulder, the pin, and the work piece produces frictional energy. Additional thermal energy develops because of intense …
Published in International Journal of Manufacturing and Materials Processing · Vol. 12, Issue 2, 2026 · pp. 1–12 Read article
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Green and Nanotechnology Approaches for the Determination of Tungsten (VI): A Modern Analytical Perspective
Abstract: The determination of tungsten (VI) has gained increasing importance due to its extensive industrial applications and growing environmental relevance. Tungsten is widely used in alloys, catalysts, electronics, and energy systems, leading to its release into environmental matrices such as water, soil, and biological systems. Accurate monitoring of tungsten at trace and ultra-trace levels is therefore essential for environmental assessment and industrial quality control. Conventional analytical techniques, including inductively coupled plasma …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 1, 2026 · pp. 26–35 Read article
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Analytical Evaluation of heavy metals in eyeshadows: A Risk assessment and Implications for Public Health Regulatory Reforms in Nigeria
Abstract: This study employs advanced analytical techniques to assess heavy metal contamination (Pb, Cd, Cr, Ni, Zn) in 18 commercially available eyeshadow products (local and imported) from Owerri Metropolis, Nigeria. Quantification was conducted using atomic absorption spectroscopy (AAS), while risk evaluations incorporated chemometric modeling approaches. Results revealed significant contamination in locally manufactured brands, particularly those containing calabash chalk (Nzu) as a base ingredient. Lead and nickel concentrations reached 166.58 ± 6.5 …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 1, 2026 Read article
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How Heavy Metal Minerals Affect the Quality of Soil and Groundwater
Abstract: Heavy metal minerals polluting soil and groundwater is becoming a major environmental issue because these components are not biodegradable and last a long time. This study examines the degree to which heavy metals, including lead (Pb), cadmium (Cd), arsenic (As), mercury (Hg), and chromium (Cr), affect the chemical and physical characteristics of soil and groundwater in regions impacted by industrial, agricultural, and mining operations. Soil and water samples were obtained …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 2, 2025 · pp. 9–20 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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Design of Multispindle Drilling Head
Abstract: AbstractThis paper presents the design, analysis, and optimization of a multi-spindle drilling machine headaimed at enhancing productivity and efficiency in manufacturing processes. Engineered to drill multipleholes simultaneously, the multi-spindle head significantly reduces machining time and increasesoperational throughput, making it ideal for high-volume production environments where speed andaccuracy are essential. The design process begins with a thorough requirements analysis and materialselection to ensure the machine head can endure operational stresses while …
Published in International Journal of Manufacturing and Materials Processing · Vol. 10, Issue 2, 2024 · pp. 36–42 Read article
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Assessing trends in Speciation of First-Row Transition Metals in Children's Playgrounds of Owerri, Nigeria
Abstract: Chemical species of metals affect toxicity but trends of these metals species in soils are less studied. This study examined the trends and variability of species of metals in soils from playgrounds within Owerri. Eighty-one composite soil samples from nine playgrounds were collected in dry and rainy season to reflect spatio-seasonal variability. Samples were characterized by standard methods in triplicates and then extracted sequentially. Concentrations of metal species were determined …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 28–45 Read article
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Analyzing Atmospheric Particulate Matter in PortHarcourt and Omoku, Nigeria, Using Artificial NeuralNetworks and Fuzzy Logic
Abstract: Port Harcourt and Omoku, two densely populated towns in Rivers State, Nigeria, are hubs of industrial, commercial, and residential activities, characterized by the presence of oil and gas industries, educational institutions, large markets, and, in the case of Omoku, access to free electric power supply. These activities contribute to environmental degradation through industrial effluents, domestic waste, automobile emissions, gas flaring, and biomass burning, which release aerosols that form harmful particulates …
Published in International Journal of Chemical Engineering and Processing · Vol. 10, Issue 2, 2024 · pp. 16–52 Read article
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Strengthening of Foundation for Pavement
Abstract: Abstract The bearing capacity of soil is a critical factor in construction engineering, particularly for designing and constructing pavement foundations. It directly depends on the load intensity the soil can support. For Class AA loading conditions, a minimum bearing capacity of 20 t/m² is required. However, the presence of frequent rain and flash floods often reduces the soil's effectiveness due to water saturation. Saturated soil experiences a 50% decrease in …
Published in International Journal of Construction Engineering and Planning · Vol. 10, Issue 2, 2024 · pp. 9–14 Read article
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Design and Implementation of Circular PolarizedPatched Antenna for 5G Applications
Abstract: The need for high-performance antennas in 5G technology is discussed in this research. It describesthe layout and enhancement of a circular polarized patch antenna, considering feed structure,substrate material, geometry, impedance matching, and gain enhancement. Modern manufacturingtechniques are used to construct the antenna, which is designed using sophisticated electromagneticsimulation techniques. The intended antenna can span a wide variety of angles in both vertical andhorizontal directions. This study investigates the effects of …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 10, Issue 1, 2024 · pp. 37–44 Read article
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Thermal Performance of Building Materials—A Comparative Study of GRIHA Materials for Composite Climate
Abstract: The study compares thermal comfort values of stationary shop Sprint at DIT University, Dehradun, in composite climate for traditional construction, furnished and with GRIHA certified materials with ideal comfort conditions. Design Builder v4.5 will be used for simulation of 3 materials, namely, traditional RCC roof with brickwork and plaster, modular materials AAC and Gypsum drywall, and rat-trap brickwork equivalent to GRIHA certified porous walling blocks, for Dehradun (composite climate). Obtained …
Published in International Journal of Housing and Human Settlement Planning · Vol. 5, Issue 2, 2019 · pp. 34–44 Read article
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Analysing the Present Rental Housing Situation for the Migrant Workforce in Delhi
Abstract: Delhi’s economy is highly dependent on migrants comprising about 50% share of the total population growth concentrated in the national capital as estimated by the Master Plan, 2021. In the year 2020, with the hit of the COVID-19 pandemic and a series of lockdowns in the country, the migrant workforce who lived in rented houses mostly in urban villages, slums, unauthorized colonies, peri-urban areas, etc. were forced to travel back …
Published in International Journal of Housing and Human Settlement Planning · Vol. 8, Issue 2, 2022 · pp. 18–33 Read article
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PHYSICOCHEMICAL PROPERTIES OF BROWNTOP MILLET AND EVALUATION OF ITS SUITABILITY IN PRODUCT FORMULATION
Abstract: The present study aims to investigate the physicochemical properties of Browntop millet, comparing it with refined wheat flour and evaluation of its suitability in product formulation. The proximate composition (moisture, ash, protein, fat and crude fiber) and functional properties (solubility, swelling power, water absorption capacity, oil absorption capacity andbulk density) were studied using AACC standard methods. The product bread was formulated by replacement of refined wheat flour of different levels …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 9, Issue 1, 2023 · pp. 18–27 Read article
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POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) AND HEAVY METALS IN SELECTED DRIED SEA FOODS FROM PORTHARCOURT CITY NIGERIA
Abstract: Polycyclic aromatic hydrocarbons (PAHS) and heavy metals constitute environmental recalcitrant pollutants which are toxic and carcinogenic. The levels of PAHs and heavy metals (As, Hg, V, Zn, Pb, and Cr) in dried sea foods: prawn (Panaeus monodon), water snail (Bithynia tentaculata), periwinkle (Littorina littorea), conch (Lobatus gallus) and Oyester (Ostrea edulis) were determined. PAHs were determined using GC/FID and the heavy metals were determined using AAS. Total PAHs ranged from …
Published in International Journal of Analytical and Applied Chemistry · Vol. 6, Issue 1, 2020 · pp. 24–34 Read article
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Evaluation of Some Trace Metals (Zn, Cd, Cu and Pb) in Sewage Sludge Samples Taken from Some Pumping Stations in Benghazi-Libya
Abstract: Due to the little data available on the levels of trace metals concentration in sewage sludge in and around Benghazi city, it was necessary to determine the current concentration, composition, distribution and sources of trace metals in the sludge of different wastewater treatment plants. Accordingly, raw sewage sludge samples collected from sixteen wastewater-pumping stations at Benghazi city have undergone evaluation of pH and some trace metals concentrations (mainly Zn, Cd, …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 2, 2020 · pp. 13–19 Read article