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Các bài báo tiêu biểu
Assessment of particulate matter and particle path trajectory analysis using a HYSPLIT model over Dire Dawa, Ethiopia
- 2024
This work deals with the assessment of particulate matter (PM1, PM2.5, and PM10) over Dire Dawa during the month of May 2021. In the study, purple sensor (PS) and gravimetric methods (GM) were used. The purple sensor was to provide real-time measurements of PM1.0, PM2.5, and PM10 particulates. The GM instruments were constructed using wood with 1 m height (distance to ground), with flat board on t...... hiện toàn bộ
Cellulose based adsorbent for cationic methylene blue dye removalAbstract New chemically amended (sodium periodate cellulose nanoparticle (NaIO4 -CNP) adsorbent material was synthesized from dried fibers of cotton. The synthesized NaIO4 -CNP adsorbent material was characterized for functional groups, crystallite size, surface morphology, morphological structure, and particle size) by using ... ... hiện toàn bộ
Tập 6 Số 2
Thermal degradation of emerging pollutants in municipal solid wastes and agro wastes: effectiveness of catalysts and pretreatment for the conversion of value added productsAbstract In this study, emerging soil pollutants in the form of municipal solid waste (MSW) and agricultural waste were converted into biofuel via thermal degradation process. Among various waste-to-energy conversion processes, the pyrolysis of biomass is considered the most significant due to its maximum biofuel yield than other conversion techniques. Individual an... ... hiện toàn bộ
Tập 6 Số 4
Application of Ultrasound Image Velocimetry (UIV) to cohesive sediment (fluid mud) flowsAbstract Ultrasound image velocimetry (UIV) is a technique that enables non-intrusive whole-flow field velocimetry measurements in opaque fluids. It gained interest in experimental fluid dynamics to study the flow mechanics of, amongst others, sediment-laden fluids. Further customisation of this technique is required to make it a reliable asset for experimental rese... ... hiện toàn bộ
Tập 6 Số 3
Assessment of alternative methods for analysing maximum rainfall spatial data based on generalized extreme value distribution Abstract The present study aimed to analyze and spatially model maximum rainfall in the southern and southwestern regions of Minas Gerais using spatial statistical methods. Daily data on maximum rainfall were collected from 29 cities in the region. To obtain predictions of maximum rainfall for return periods of 2, 5, 10, 50, and 100 years, Bayesian Inference was emp... ... hiện toàn bộ
Multi-parameters approach to assessment of soil liquefaction vulnerability in wetland areas of Lagos, Southwestern, Nigeria Abstract With respect to geology, most coastal terrains are underlain by problematic soils, some of which are liquefiable in nature and may cause sudden failure of engineering infrastructures. Against this background, this study was carried out to investigate the subsurface geology of some Lagos coastal areas and their engineering implications using geophysical and ... ... hiện toàn bộ
Detection of six potato viruses using double antibody sandwich ELISA from in vitro, screen house and field grown potato crops in EthiopiaAbstract Virus infection in seed potato reduces yield, and the problem is exacerbated when an early-generation seed is affected. The prevalence of six key potato viruses, PVY, PVX, PLRV, PVA, PVS, and PVM, was assessed among decentralized seed multipliers such as individuals, farmer seed group cooperatives, private companies, and agricultural research centers that p... ... hiện toàn bộ
Tập 6 Số 3
Modified rice husk as component in recyclable and biodegradable epoxy thermosets Abstract Rice husk (RH), an abundant agricultural residue, was successfully chemically modified and used as a component in reprocessable and biodegradable epoxy thermosets. First, RH was subjected to alkaline treatment to increase the cellulose content followed by succinylation and curing with trimethylolpropane triglycidyl ether to form the thermoset films. The che... ... hiện toàn bộ
Entropy generation on MHD motion of hybrid nanofluid with porous medium in presence of thermo-radiation and ohmic viscous dissipation Abstract Hybrid nanotechnology has significantly contributed to enhancing energy efficiency and reducing heat loss. This study addresses entropy analysis in the motion of hybrid nanofluids incorporating magnetohydrodynamic effects, thermal radiation, and ohmic viscous dissipation phenomena. The implementation of magnetohydrodynamic, thermal radiation, and dissipatio... ... hiện toàn bộ