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Abiotic and biotic constituents of oil sands process-affected waters

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Journal of Environmental Sciences 2023年第5期127卷 169-186页

作者： nora A.S.Hussain James L.Stafford Department of Biological Sciences University of AlbertaEdmontonAlberta T6G 2N8Canada

The oil sands in Northern Alberta are the largest oil sands in the world,providing an important economic resource for the Canadian energy *** extraction of petroleum in the oil sands begins with the addition of hot water to the bituminous sediment,generating oil sands process-affected water(OSPW),which is acutely toxic to *** of litres of OSPW are stored on oil sands mining leased sites in man-made reservoirs called tailings *** the volume of OSPW increases,concerns arise regarding the reclamation and eventual release of this water back into the *** is composed of a complex and heterogeneous mix of components that vary based on factors such as company extraction techniques,age of the water,location,and bitumen ore ***,the effective remediation of OSPW requires the consideration of abiotic and biotic constituents within it to understand short and long term effects of treatments *** review summarizes selected chemicals and organisms in these waters and their interactions to provide a holistic perspective on the physiochemical and microbial dynamics underpinning OSPW.

关键词： OSPW toxicants Reclamation Tailings ponds Remediation Microbial AOPs Bioremediation

An optimized Parkinson’s disorder identification through evolutionary fast learning network

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International Journal of Intelligent Computing and Cybernetics 2022年第3期15卷 383-400页

作者： Bouslah Ayoub Taleb nora LRI Laboratory Computer Science DepartmentUniversity of BadjiMokhtar AnnabaAnnabaAlgeria Complex System Engineering Laboratory Computer Science DepartmentUniversity of Badji Mokhtar AnnabaAnnabaAlgeria

Purpose-Parkinson’s disease(PD)is a well-known complex neurodegenerative ***,its identification is based on motor disorders,while the computer estimation of its main symptoms with computational machine learning(ML)has a high exposure which is supported by researches ***,ML approaches required first to refine their parameters and then to work with the best model *** process often requires an expert user to oversee the performance of the ***,an attention is required towards new approaches for better forecasting ***/methodology/approach-To provide an available identification model for Parkinson disease as an auxiliary function for clinicians,the authors suggest a new evolutionary classification *** core of the prediction model is a fast learning network(FLN)optimized by a genetic algorithm(GA).To get a better subset of features and parameters,a new coding architecture is introduced to improve GA for obtaining an optimal FLN ***-The proposed model is intensively evaluated through a series of experiments based on Speech and HandPD benchmark *** very popular wrappers induction models such as support vector machine(SVM),K-nearest neighbors(KNN)have been tested in the same *** results support that the proposed model can achieve the best performances in terms of accuracy and ***/value-A novel efficient PD detectionmodel is proposed,which is called *** A-W-FLN utilizes FLN as the base classifier;in order to take its higher generalization ability,and identification capability is alsoembedded to discover themost suitable featuremodel in the detection ***,the proposedmethod automatically optimizes the FLN’s architecture to a smaller number of hidden nodes and solid connecting *** helps the network to train on complex PD datasets with non-linear features and yields superior result.

关键词： Parkinson’s disease(PD) Fast learning network(FLN) Genetic algorithm(GA) Speech and handwriting patterns PD identification system

An efficient and mild protocol for the synthesis of unsymmetrical ureas in the absence of catalyst and additives

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Chinese Chemical Letters 2010年第10期21卷 1171-1174页

作者： Rahman Hosseinzadeh Yaghoub Sarrafi nora Aghili Department of Organic Chemistry Faculty of ChemistryUniversity of Mazandaran

A new practical method for the synthesis of unsymmetrical ureas was achieved by reaction of phenylurea with primary and secondary amines under neutral and mild condition in very good yields. The reaction took place in... 详细信息

关键词： Unsymmetrical ureas Phenylurea Amines Uncatalyzed reaction

Intelligent Machine Learning Enabled Retinal Blood Vessel Segmentation and Classification

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Computers, Materials & Continua 2023年第1期74卷 399-414页

作者： nora Abdullah Alkhaldi Hanan T.Halawani Department of Computer Science College of Computer Science and Information TechnologyKing Faisal UniversityP.O.Box 400AlAhsa31982Saudi Arabia College of Computer Science and Information Systems Najran UniversityNajran61441Saudi Arabia

Automated segmentation of blood vessels in retinal fundus images is essential for medical image *** segmentation of retinal vessels is assumed to be essential to the progress of the decision support system for initial analysis and treatment of retinal *** article develops a new Grasshopper Optimization with Fuzzy Edge Detection based Retinal Blood Vessel Segmentation and Classification(GOFED-RBVSC)*** proposed GOFED-RBVSC model initially employs contrast enhancement ***,GOAFED approach is employed to detect the edges in the retinal fundus images in which the use of GOA adjusts the membership *** ORB(Oriented FAST and Rotated BRIEF)feature extractor is exploited to generate feature ***,Improved Conditional Variational Auto Encoder(ICAVE)is utilized for retinal image classification,shows the novelty of the *** performance validation of the GOFEDRBVSC model is tested using benchmark dataset,and the comparative study highlighted the betterment of the GOFED-RBVSC model over the recent approaches.

关键词： Edge detection blood vessel segmentation retinal fundus images image classification deep learning

Attitude toward preventive counseling and healthy practices among medical students at a Colombian university

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Frontiers of Medicine 2015年第2期9卷 251-259页

作者： Luz Helena Alba nora Badoui Fabian Gil Department of Preventive and Social Medicine Pontificia Universidad Javeriana Bogota Colombia Department of Clinical Epidemiology and Biostatistics Pontificia Universidad Javeriana Bogota Colombia

Unhealthy behaviors of medical students influence their attitudes toward preventive counseling. The burden of chronic diseases is continually growing in developing countries, emphasizing the need for the increased role of general practitioners in preventive counseling. The objective of this study was to describe the effect of medical training on the risk profiles and attitudes of medical students toward preventive counseling in a Colombian university. Students in their first and fifth years of training were surveyed using the ＂Healthy Doctor = Healthy Patient＂ questionnaire to assess counseling attitudes; personal practices, such as risky drinking, smoking, inadequate nutrition, and non-compliance with physical activity recommendations; and the university environment. The association among these components was estimated, as well as the effect of the university environment. Risky drinking and smoking decreased from first to fifth year （59.3% vs. 37.1%, P = 0.021 and 31.5~ vs. 25.9%, P = 0.51, respectively）, whereas inadequate nutrition and non-compliance with physical activity recommendations increased. Physical activity （PA） was associated with positive counseling attitude （ORs： nutrition 7.6; alcohol 5.2; PA 10.6）. Areas governed by institutional policies that are emphasized in the curriculum positively affected student practices. PA promoted preventive counseling and healthy lifestyles most effectively. Universities should therefore strengthen their preventive medicine curricula and modify social determinants.

关键词： lifestyle medical students preventive medicine counseling universities schools medical

Improved MPPT Control Strategy for PV Connected to Grid Using IncCond-PSO-MPC Approach

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CSEE Journal of Power and Energy Systems 2023年第3期9卷 1008-1020页

作者： nora Kacimi Abdelhakim Idir Said Grouni Mohamed Seghir Boucherit Laboratoire de Commande de Processus ENP AlgerAlgiersAlgeria Electrical Engineering Department University of M’silaBP 28000M’silaAlgeria Boumerdes University Boumerdes35000BoumerdesAlgeria.He is now with the Tamaghasset UniversityAlgeria

This paper proposes a new hybrid maximum power point tracking(MPPT)control strategy for grid-connected solar systems based on Incremental conductance—Particle Swarm Optimization and Model Predictive Controller(IncCond-PSOMPC).The purpose of the suggested method is to create as much power as feasible from a PV system during environmental changes,then transfer it to the power *** accomplish this,a hybrid combination of incremental conductance(IncCond)and particle swarm optimization(PSO)is proposed to locate maximum power,followed by model predictive control(MPC)to track maximum power and control the boost converter to achieve high performance regardless of parameter variations.A two-level inverter,likewise,controlled by Model Predictive Control,is employed to inject the PV power *** this application,the MPC is based on minimizing the difference between the reference and prediction powers,which is computed to select the switching state of the *** proposed system is simulated and evaluated in a variety of dynamic conditions using Matlab/*** reveal that the proposed control mechanism is effective at tracking the maximum power point(MPP)with fewer power oscillations.

关键词： DC/DC boost converter grid-connected PV incremental conductance particle swarm optimization and model predictive controller(IncCond-PSO-MPC) maximum power point tracking(MPPT) photovoltaic(PV)

Interactions-based method to detect emergent behavior in ongoing simulations

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第4期12卷 77-91页

作者： Ali Boukehila nora Taleb Yazid Benazzouz LISCO Laboratory Badji Mokhtar-Annaba UniversityAnnabaAlgeria Amar Telidji Laghouat University LaghouatAlgeria

This study investigates the use of interactions as a metric to detect emergent phenomena in the ongoing agent-based *** proposed algorithm aims to detect the flocking behavior in the Boids *** model is simple to understand and to use and always verifies *** recent years,several metrics have been proposed to investigate emergent behaviors in complex *** main limitations of these studies are,how to choose a proper metric to avoid a high coast of computation,and how to detect emergence as it happens,i.e.,live *** this paper,we propose an interaction-based algorithm to detect emergent behavior in Boids *** three main contributions of this work are:(1)using interaction as metric,(2)detect emergence when it happens,(3)no need to store simulation data for post-mortem analysis.A prior interactions analysis was done to classify the system *** results show that the algorithm was able to detect the rise of the flocking,i.e.,emergence in the Boids *** results are provided to illustrate the effectiveness of the proposed approach.

关键词： Complex and intelligent systems adaptation multi-agent system observation emerging phenomena

Optimization of the heat treatment of additively manufactured Ni-base superalloy IN718

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International Journal of Minerals,Metallurgy and Materials 2020年第5期27卷 640-648页

作者： Benedikt Diepold nora Vorlaufer Steffen Neumeier Thomas Gartner Mathias Goken Department of Materials Science&Engineering Institute IFriedrich-Alexander-Universitat Erlangen-NürnbergErlangen 91058Germany Lufthansa Technik AG Hamburg 22335Germany

Additive manufacturing(AM) of Ni-base superalloy components can lead to a significant reduction of weight in aerospace applications. AM of IN718 by selective laser melting results in a very fine dendritic microstructure with a high dislocation density due to the fast solidification process. The complex phase composition of this alloy, with three different types of precipitates and high residual stresses, necessitates adjustment of the conventional heat treatment for AM parts. To find an optimized heat treatment, the microstructures and mechanical properties of differently solution heat-treated samples were investigated by transmission and scanning electron microscopy, including electron backscatter diffraction, and compression tests. After a solution heat treatment(SHT), the Nb-rich Laves phase dissolves and the dislocation density is reduced, which eliminates the dendritic substructure. SHT at 930 or 954°C leads to the precipitation of the δ-phase, which reduces the volume fraction of the strengthening γ′-and γ′′-phases formed during the subsequent two stage aging treatment. With a higher SHT temperature of 1000°C, where no δ-phase is precipitated, higher γ′ and γ′′ volume fractions are achieved, which results in the optimum strength of all of the solution heat treated conditions.

关键词： Ni-base superalloy selective laser melting strengthening mechanism powder bed fusion microstructure

Effects of root morphology and anatomy on cadmium uptake and translocation in rice(Oryza sativa L.)

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Journal of Environmental Sciences 2019年第1期31卷 296-306页

作者： Lu Huang Wai Chin Li nora Fung Yee Tam Zhihong Ye School of Life Sciences Sun Yat-sen University Department of Science and Environmental Studies The Education University of Hong Kong State Key Laboratory in Marine Pollution and Department of Chemistry City University of Hong Kong

A clear description of the certain mechanisms of cadmium(Cd) uptake and translocation in rice(Oryza sativa L.) may help to reduce Cd accumulation in rice grain. Hydroponic experiments were carried out to determine the effects of cultivation conditions(aerated and stagnant) on the uptake, translocation and subcellular distribution of Cd in relation to the morphology and anatomy of roots in two rice genotypes with different Cd accumulations in grains. Marked differences in morphology and anatomy were observed between these two genotypes under different cultivation conditions. Genotypes with low Cd accumulation in grains tended to develop fewer root tips per root surface area, larger root porosity and more mature apoplastic barriers. The stagnant cultivation condition decreased the number of root tips per root surface area but increased root porosity and accelerated apoplastic barrier formation in root *** Cd uptake studies revealed that rice plants with fewer number of root tips per root surface area reduced root Cd uptake ability, while mature apoplastic barriers increased root Cd retention in cell walls and the symplast. Thus, the fewer number of root tips per root surface area and the earlier formation of mature apoplastic barriers led to lower Cd uptake and translocation. The results indicated that the morphology and anatomy of roots could play important roles in Cd uptake and translocation in rice, and could be influenced by both genotype and cultivation conditions. The present results would be useful in screening and planting rice plants with low Cd accumulation.

关键词： Apoplastic barriers Cadmium Rice Root morphology