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Numerical Investigation and Optimization of a Flat Plate Solar Collector Operating with Cu/CuO/Al_(2)O_(3)–Water Nanofluids

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Transactions of Tianjin University 2021年第1期27卷 64-76页

作者： youssef Belkassmi Kamal Gueraoui Lahoucine el maimouni Najem Hassanain Omar Tata ERMAM Polydisciplinary Faculty of OuarzazateIbn Zohr UniversityBox 638OuarzazateMorocco MSME Faculty of SciencesMohammed-V UniversityRabatMorocco Group of Semiconductors and Environmental Sensor Technologies-Energy Research Center Faculty of ScienceMohammed-V UniversityB.P.1014RabatMorocco GEMS Laboratory ENSAIbn Zohr UniversityB.P.1136AgadirMorocco

Nanofluids are a potential alternative to significantly improving the performance of heat transfer applications. In this work, a numerical analysis to examine the eff ect of dispersing copper(Cu), copper oxide(CuO), and aluminum(Al2O3) nanoparticles in pure water on the performance of a flat plate solar collector(FPSC) and a numerical model was proposed. The influence of the nanofluid type on the thermal efficiency was critically investigated and discussed. The eff ect of the mass flow rate on the performance was also analyzed and discussed. Based on correlations of the thermophysical properties of nanofluids, a sensitivity analysis was used to analyze the impact of the nanoparticles on the base fluid. The results indicate that the performance of the FPSC with Cu/water nanofluid was better than that of FPSCs using CuO/water or Al2O3/water nanofluids. When the mass flow rate of the nanofluids was 8.0 L/min, the efficiency of the FPSC was much greater than those at the flow rates of 5.0 L/min and 2.0 L/min. Mean enhancements in thermal efficiency of 4.44%, 4.27%, and 4.21% were observed when 2.0 L/min was applied using Cu/water, Cu O/water, and Al2O3/water nanofluids, respectively. Improvements in thermal efficiency of 2.76%, 2.53%, and 2.47% occurred when 8.0 L/min was applied.

关键词： Flat plate solar collector Solar energy Thermal efficiency Nanofluids Al_2O_3/water Cu/water CuO/water

Chemical compounds as well as antioxidant and litholytic activities of Arbutus unedo L. leaves against calcium oxalate stones

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Journal of Integrative Medicine 2019年第6期17卷 430-437页

作者： Rabie Kachkoul Tarik Squalli Housseini Mohamed Mohim Radouane el Habbani youssef Miyah Anissa Lahrichi Laboratory of Biochemistry Faculty of Medicine and PharmacyUniversity Sidi Mohammed Ben AbdellahBP 1893FezMorocco Faculty of Science and Technology University Sidi Mohammed Ben AbdellahBP 2202FezMorocco Laboratory of Molecular Bases in Human Pathology and Therapeutic Tools Faculty of Medicine and PharmacyUniversity Sidi Mohammed Ben AbdellahBP 1893FezMorocco Department of Nephrology University Hospital HassanⅡBP 1835AtlasFezMorocco

Objective: The present study aimed to quantify and identify the bioactive compounds of the Arbutus unedo L. leaves in order to evaluate both their antioxidant properties and litholytic activities against calcium oxalate ***: This survey was carried out using hydroalcoholic extract(***) and infusion(***) of A. unedo leaves. The quantification of phenolic compounds, flavonoids, flavonols and anthocyanins was done by spectrophotometric methods and identification of chemical components was performed by ultraperformance liquid chromatography with photodiode array and electrospray ionization tandem mass spectrometry. Antioxidant activity was measured using the 1,1-diphenyl-2-picrylhydrazyl(DPPH)method and by the ferric reducing/antioxidant power(FRAP) assay. Litholytic activity of *** and *** was studied using a special model that resembles circuitry of the urinary ***: *** showed greater antioxidant efficacy than ***(P < 0.05). Its higher efficiency was shown via the values of median inhibitory concentration, which was close to(76.14 ± 0.91) mg/mL for *** versus(202.64 ± 5.77) lg/mL for *** using the DPPH method, and(53.77 ± 0.81) lg/mL for *** versus(236.86 ± 31.90) lg/mL for ***, using FRAP method. *** exhibited significantly higher litholytic activity compared to ***(P < 0.05), with dissolution values of 31.03% ± 0.63% versus 14.55% ± 0.65%, ***: Overall, the results suggest that the A. unedo is rich in bioactive compounds, and possesses antioxidant and litholitic abilities that are worthy of further study.

关键词： Antioxidant activity Arbutus unedo L Litholytic activity Phenolic compounds Liquid chromatography Photodiode array electrospray ionization tandem Mass spectrometry

Changes in Pleurotus ostreatus nutritional value and heavy metal profile as a result of supplementation with nano-additive

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Studies in Fungi 2022年第1期7卷 89-94页

作者： youssef Najib Sassine Nevena Shuleva Zeina el Sebaaly Department of Plant Production Faculty of AgricultureLebanese UniversityBeirutLebanon Department of Agronomy Faculty of AgronomyUniversity of ForestrySofiaBulgaria

The present study evaluated the effect of Lithovit-Amino25 on the nutrient profile and heavy metal composition of Pleurotus *** product was tested in two doses applied at three different timings:T2:3 g kg^(−1)/spawning,T3:3 g kg^(−1)/after first harvest,T4:3 g kg^(−1)/spawning and after first harvest,T5:5 g kg^(−1)/spawning,T6:5 g kg^(−1)/after first harvest,and T7:5 g kg^(−1)/spawning and after first *** to control(T1:non-treated substrate),mushrooms’fibers and carbohydrates increased in all treatments,recording the highest values in T4(4.16%)and T3(18.42%),*** content was higher in mushrooms of substrates treated at spawning,with a 0.33%improvement in *** content decreased in T3,T4,T6,and *** sugars decreased in mushrooms of treated substrates,and glucose was the dominant sugar in *** increased in mushrooms of T3 and ***,iron,and potassium decreased in mushrooms of treated *** decreased in T3,T5,and T7,magnesium increased in T2,and phosphorus increased only in T2 and *** content of all treated mushrooms was in the standard safe limit(el and lead,increased by respective ranges of 2.8−11.88 ppm and 9.1−21 ppm,higher than the safe *** product presented a risk of heavy metal bioaccumulation even with a low dose.

关键词： content sugar additive

Capparis spinosa L waste activated carbon as an efficient adsorbent for crystal violet toxic dye removal: Modeling, optimization by experimental design, and ecological analysis

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Chinese Journal of Chemical Engineering 2024年第7期71卷 283-302页

作者： Mohammed Benjelloun youssef Miyah Salma Ssouni Soulaiman Iaich Mohamed el-habacha Salek Lagdali Khadija Saka el Mustafa Iboustaten Abdelaziz Ait Addi Sanae Lairini Rabia Bouslamti Laboratory of Materials ProcessesCatalysisand EnvironmentHigher School of TechnologySidi Mohamed Ben Abdellah UniversityFez 30070Morocco Ministry of Health and Social Protection Higher Institute of Nursing Professions and Health TechniquesFez/Meknes 30070Morocco Laboratory of Biochemistry Faculty of MedicinePharmacy and DentistrySidi Mohamed Ben Abdellah UniversityFez 30070Morocco Laboratory of Applied Chemistry and Environment Faculty of SciencesIbnou Zohr UniversityAgadir 80322Morocco Research Team of Energy and Sustainable Development Higher School of TechnologyIbnou Zohr UniversityGuelmim 81000Morocco Organic Chemistry and Physical Chemistry Laboratory Faculty of SciencesIbnou Zohr UniversityAgadir 80322Morocco

Textile dyes are dramatic sources of pollution and non-aesthetic disturbance of aquatic life and therefore represent a potential risk of bioaccumulation that can affect living *** is imperative to reduce or eliminate these dyes from liquid effluents with innovative biomaterials and ***,this research aims to highlight the performance of Capparis spinosa L waste-activated carbon(CSLW-AC)adsorbent to remove crystal violet(CV)from an aqueous *** mechanism of CV adsorption on CSLW-AC was evaluated based on the coupling of experimental data and different characterization *** efficiency of the CSLW-AC material reflected by the equilibrium adsorption capacity of CV could reach more than 195.671 mg·g^(–1) when 0.5 g·L^(–1) of CSLW-AC(Particle size≤250μm)is introduced into the CV of initial concentration of 100 mg·L^(–1) at pH 6 and temperature 65℃ and in the presence of potassium ions after 60 min of contact time according to the one parameter at a time *** adsorption behavior of CV on CSLW-AC was found to be consistent with the pseudo-second-order kinetic model and Frumkin's linear isothermal *** thermodynamic aspects indicate that the process is physical,spontaneous,and *** optimization of the process by the Box Behnken design of experiments resulted in an adsorption capacity approaching 183.544 mg·g^(–1)([CV]=100 mg·L^(–1) and[CSLW-AC]=0.5 g·L^(–1) at 35 min).The results of the Lactuca sativa seeds germination in treated CV(70%),adsorbent solvent and thermal regeneration(more than 5 cycles),and process cost analysis(1.0484 USD·L^(–1))tests are encouraging and promising for future exploitations of the CSLW-AC material in different industrial fields.

关键词： Box Behnken Capparis spinosa L waste-activated carbon Cost analysis Isotherm Kinetic Regeneration

Potential of Nassarius nitidus for monitoring organotin pollution in the lagoon of Bizerta (northern Tunisia)

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Journal of Environmental Sciences 2011年第9期23卷 1551-1557页

作者： youssef Lahbib Sami Abidli Pablo Rodríguez González Josè Ignacio Garía Alonso Najoua Trigui-el Menif Department of Biology Laboratory of Environment BiomonitoringGroup of Applied and Fundamental MalacologyFaculty of Sciences of BizertaUniversity of Carthage Department of Physical and Analytical Chemistry Faculty of ChemistryUniversity of Oviedo

Imposex and butyltin burden were assessed in Nassarius nitidus,Bolinus brandaris and Hexaplex trunculus collected at five stations in the Bizerta *** analysis showed that imposex followed type （a） in *** （distal evolution）,against type （d） in the two muricids （proximal evolution）.Imposex indices were higher in sites located nearby sources of tributyltin and *** was the least affected species of the five sites,followed by *** and *** analysis showed lower accumulation in *** followed by *** and *** study has allowed the gathering of data on imposex in a snail studied for the first time in Tunisia （***）.It suggests the possibility of using such snail as a complementary species for organotin monitoring programs in the Mediterranean and further confirmed that *** is the most suitable species for such investigations.

关键词： organotins bio-indicator North Africa

CactiViT:Image-based smartphone application and transformer network for diagnosis of cactus cochineal

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Artificial Intelligence in Agriculture 2023年第3期9卷 12-21页

作者： Anas Berka Adel Hafiane youssef Es-Saady Mohamed el Hajji Raphaël Canals Rachid Bouharroud IRF-SIC Laboratory Ibnou Zohr UniversityBP 8106—Cite DakhlaAgadir 80000Morocco INSA CVL University of OrleansPRISME LaboratoryEA 4229Bourges 18022France Regional Center for Agricultural Research of Agadir National Institute of Agricultural ResearchAvenue EnnasrPoB 415 Rabat PrincipaleRabat 10090Morocco

The cactus is a plant that grows in many rural areas,widely used as a hedge,and has multiple benefits through the manufacture of various cosmetics and other ***,this crop has been suffering for some time from the attack of the carmine scaleDactylopius opuntia(Hemiptera:Dactylopiidae).The infestation can spread rapidly if not treated in the early *** solutions consist of regular field checks by the naked eyes carried out by *** major difficulty is the lack of experts to check all fields,especially in remote *** addition,this requires time and *** the need for a system that can categorize the health level of cacti *** date,deep learning models used to categorize plant diseases from images have not addressed the mealy bug infestation of cacti because computer vision has not sufficiently addressed this *** there is no public dataset and smartphones are commonly used as tools to take pictures,it might then be conceivable for farmers to use them to categorize the infection level of their *** this work,we developed a system called CactiVIT that instantly determines the health status of cacti using the Visual image Transformer(ViT)*** also provided a new image dataset of cochineal infested cacti.1 Finally,we developed a mobile application that delivers the classification results directly to farmers about the infestation in their fields by showing the probabilities related to each *** study compares the existing models on the new dataset and presents the results *** VIT-B-16 model reveals an approved performance in the literature and in our experiments,in which it achieved 88.73%overall accuracy with an average of+2.61%compared to other convolutional neural network(CNN)models that we evaluated under similar conditions.

关键词： Cactus Cochineal Smartphones Classification VIT Deep learning

Chronic ocular GVHD:limbal and conjunctival stem cell allografts from the same hematopoietic stem cell donor

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International Journal of Ophthalmology(English edition) 2018年第9期11卷 1569-1572页

作者： elias F Jarade Hala el Rami youssef Abdelmassih Mazen Amro Beirut Eye and ENT Specialist Hospital Beirut 116-5311Lebanon

Dear Editor,I am *** F Jarade from the Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon. I write to describe a novel surgical technique in the management of chronic ocular graft-versus-host disease（GVHD）.

关键词： Chronic ocular GVHD limbal and conjunctival stem cell allografts from the same hematopoietic stem cell donor

Renormalized Solutions of Nonlinear Parabolic Equations in Weigthed Variable-Exponent Space

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Journal of Partial Differential Equations 2015年第3期28卷 225-252页

作者： youssef Akdim CHAKIR Allalou NEZHA el gorch Laboratory LSL Faculty Polydisciplinary of Taza. University Sidi Mohamed BenAbdellah P. O. Box 1223 Taza Gare Marocco.

This article is devoted to study the existence of renormalized solutions for the nonlinear p （x）-parabolic problem in the Weighted-Variable-Exponent Sobolev spaces, without the sign condition and the coercivity cond... 详细信息

关键词： Weighted variable exponent Lebesgue Sobolev space Young's inequality renormal-ized solution parabolic problems.

Complement-dependent neuroinflammation in spinal cord injury:from pathology to therapeutic implications

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Neural Regeneration Research 2025年第5期20卷 1324-1335页

作者： Hassan Saad Bachar el Baba Ali Tfaily Firas Kobeissy Juanmarco Gutierrez Gonzalez Daniel Refai Gerald R.Rodts Christian Mustroph David Gimbel Jonathan Grossberg Daniel L.Barrow Matthew F.Gary Ali M.Alawieh Department of Neurosurgery Emory University School of MedicineAtlantaGAUSA Department of Neurology Yale UniversityNew HavenCTUSA Center for Neurotrauma Multiomics&Biomarkers(CNMB)Morehouse School of MedicineAtlantaGAUSA

Spinal cord injury remains a major cause of disability in young adults,and beyond acute decompression and rehabilitation,there are no pharmacological treatments to limit the progression of injury and optimize recovery in this *** the thorough investigation of the complement system in triggering and propagating cerebral neuroinflammation,a similar role for complement in spinal neuroinflammation is a focus of ongoing *** this work,we survey the current literature investigating the role of complement in spinal cord injury including the sources of complement proteins,triggers of complement activation,and role of effector functions in the *** study relevant data demonstrating the different triggers of complement activation after spinal cord injury including direct binding to cellular debris,and or activation via antibody binding to damage-associated molecular *** effector functions of complement have been implicated in spinal cord injury,and we critically evaluate recent studies on the dual role of complement anaphylatoxins in spinal cord injury while emphasizing the lack of pathophysiological understanding of the role of opsonins in spinal cord *** this pathophysiological review,we systematically review the different translational approaches used in preclinical models of spinal cord injury and discuss the challenges for future translation into human *** review emphasizes the need for future studies to dissect the roles of different complement pathways in the pathology of spinal cord injury,to evaluate the phases of involvement of opsonins and anaphylatoxins,and to study the role of complement in white matter degeneration and regeneration using translational strategies to supplement genetic models.

关键词： complement neuroinflammation neuroplasticity regeneration spinal cord injury targeted therapy