67 results match your criteria: "University of Hassan II[Affiliation]"

This study introduces a novel and effective approach for the electrocatalytic oxidation of alcohols, showcasing the development of a highly active and cost-effective anode catalyst for methanol and ethanol. A dual-embedded Ni electrode, named (Ni@NATPhos/Ni), is based on a carbon paste electrode modified with natural phosphate impregnated with nickel ions. A layer of nickel nanoparticles was then added electrochemical deposition, using a precise combination of wet impregnation and potentiostatic electrodeposition techniques.

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High sensitive synchrone detection based dynamic Sénarmont method for measurements of electro-optical (EO) Pockels and Kerr coefficients in hybrid nanocomposites films.

Rev Sci Instrum

October 2024

Département de physique, Laboratoire de Physique de la Matière Condensée (LPMC), Faculté des Sciences Ben M'sik, Université Hassan II-Casablanca, Av Driss El Harty, BP 7955, Sidi Othmane, Code Postal 20645 Casablanca, Morocco.

This study introduces an innovative approach by employing a highly sensitive synchronous detection-based dynamic Sénarmont method for the precise measurement of electro-optical (EO) Pockels and Kerr coefficients within hybrid nanocomposite films. The experimental setup integrates LabVIEW instrumentation software, ensuring accurate data acquisition. The EO-active film compositions encompass diverse polymer (PMMA) and organic dye combinations, including PMMA/organic dyes (DR1 and CPO), as well as PMMA combined with DR1-SiC, DR1-TiO2, and CPO-TiO2.

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Effect of repulsive interaction and initial velocity on collective motion process.

Eur Phys J E Soft Matter

October 2024

Laboratory of Bio-Geosciences and Materials Engineering, Higher Normal School of Casablanca, University of Hassan II. Casablanca, Casablanca, Morocco.

Self-propelled collective motion is a highly complex phenomenon, necessitating advanced practical and theoretical tools for comprehension. The significance of studying collective motion becomes apparent in its diverse applications. For instance, addressing evacuation challenges in scenarios with multiple agents can be achieved through an examination of collective motion.

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Article Synopsis
  • Prostate cancer is a common health issue, and identifying a reliable biomarker is essential for early diagnosis and treatment.
  • Researchers focused on the expression of Human Endogenous Retrovirus K-10 (HERV-K) to determine its role in prostate cancer progression.
  • Their study found a significant increase in HERV-K gag expression in cancerous prostate tissues compared to healthy ones, suggesting that it could be a useful biomarker for detecting prostate cancer.
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Stochastic two-strain epidemic model with saturated incidence rates driven by Lévy noise.

Math Biosci

September 2024

Laboratory of Mathematics, Computer Science and Applications, Faculty of Sciences and Technologies, University of Hassan II of Casablanca, PO Box 146, Mohammedia, Morocco.

In this paper, we introduce a stochastic two-strain epidemic model driven by Lévy noise describing the interaction between four compartments; susceptible, infected individuals by the first strain, infected ones by the second strain and the recovered individuals. The forces of infection, for both strains, are represented by saturated incidence rates. Our study begins with the investigation of unique global solution of the suggested mathematical model.

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Production of sheep wool keratin hydrolysate and evaluation of its effectiveness in promoting maize cultivation.

J Environ Manage

August 2024

Laboratory of Materials, Catalysis & Valorization of Natural Resources, URAC 24, Faculty of Science and Technology Mohammedia, University of Hassan II Casablanca, Morocco; Natural Resources Valorization Center, Moroccan Foundation for Advanced Science, Innovation and Research, Mohammed VI Polytechnic University, Ben Guerir, Morocco. Electronic address:

The purpose of this work is to produce keratin hydrolysate from sheep wool by alkaline hydrolysis and to assess its effectiveness in improving maize plant growth under greenhouse conditions. A hybrid response surface methodology with Box-Behnken design (RSM-BBD) was used to model and optimize the hydrolysis process. The synergistic effects between three critical independent variables including temperature, hydrolysis time, and concentration of KOH on the hydrolysis rate were statistically investigated and optimized.

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Watermelon rinds were investigated as a bio-coagulant for treating water contaminated by metals and turbidity, owing to their biodegradability and greater environmental friendliness compared to chemical coagulants. Fourier transform infrared spectroscopy, scanning electron microscopy paired with energy dispersive X-ray analysis and X-ray diffraction characterized the watermelon rinds before and after use. A Box-Behnken experimental design optimized the most influential parameters of initial pH, coagulant dose, and particle size based on response surface methodology.

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Environmental assessment of the central Atlantic coast of Morocco using a multibiomarker approach in Mytilus galloprovincialis.

Environ Sci Pollut Res Int

May 2024

Laboratory of Virology, Oncology, Biosciences, Environment and New Energies, Faculty of Sciences and Techniques Mohammedia, University of Hassan II Casablanca, Mohammedia, Morocco.

Article Synopsis
  • A multibiomarker approach assesses the impact of environmental stressors on ecosystems and human health, specifically in the central Atlantic Ocean of Morocco affected by various pollutants.
  • The study measured four biomarkers in the mussel Mytilus galloprovincialis from four different sites, each facing unique industrial, agricultural, and touristic impacts.
  • Results indicated seasonal variability in biomarker responses, with significant findings such as AChE inhibition and GST induction being highest at specific sites, emphasizing the need for this approach in environmental monitoring and resource protection.
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High extraction and excellent anti-UV and anti-oxidant proprieties of lignin from Reseda Luteola L. waste by organosolv process.

Int J Biol Macromol

May 2024

Laboratory of Physical Chemistry, Materials and Catalyse (LCPMC), Faculty of Sciences Ben M'Sick, University of Hassan II -, Casablanca, Morocco.

Lignin is an abundant natural biopolymer found in plant cell walls. Lignin can come from tinctorial plants, whose residual biomass after dye extraction was typically discarded as waste. The main objective of this study was to extract lignin from the residual biomass of Reseda luteola L.

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Article Synopsis
  • - CADASIL is a genetic disorder linked to mutations in the NOTCH3 gene, leading to issues like small strokes, migraines, and dementia.
  • - MRI scans often reveal specific brain abnormalities, particularly in certain areas like the basal ganglia and white matter, which are associated with the condition.
  • - The report discusses a case of a CADASIL patient treated with intravenous tenecteplase for an acute stroke and reviews existing literature on the safety and effectiveness of thrombolysis in CADASIL patients.
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Tunis Med

July 2023

Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy of Casablanca, University of HASSAN II, Casablanca, Morocco.

In the era of genomics, orientation in the face of hereditary neutropenia still requires, first and foremost, a good clinical and cytological analysis. The thirty responsible genes now explain 60% of congenital neutropenia. These are rare since they are only found in 1‰ of all congenital neutropenia, estimated at 1% of the population.

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In this paper, the work we have carried out has focused on the failure analysis of CPVC (chlorinated polyvinyl chloride) pipes. We stimulated the damage by notch effect and evaluated its properties using models available in the literature, specifically, the linear damage of Miner, the normalized damage and the unified theory. Burst tests allowed us to obtain ultimate pressure and time parameters for the virgin specimens and the residual parameters for the damaged ones.

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Background: This study investigates the prevalence, distribution and risk indicators of buccal gingival recessions (GRs) in periodontitis patients.

Methods: A retrospective examination of 400 periodontitis patients files was performed using an operating sheet. Univariate logistic regression analysis was performed to identify risk indicators of GRs.

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Transportation and Access to Healthcare in Morocco: An Exploratory Study of Guelmim-Oued Noun Region.

Ann Glob Health

February 2024

Applied Modeling in Economics and Management Laboratory, University of Hassan II Casablanca, Casablanca, Morocco.

Objective: The aim of this study was to examine the correlation between accessibility to healthcare facilities and transportation in the Guelmim Oued Noun region of Morocco, where transportation barriers continue to pose a major challenge to accessing healthcare, despite efforts aimed at reducing access barriers.

Methods: Data collection for this study involved the administration of a survey among 328 outpatients residing in the Guelmim Oued Noun region, Morocco. The utilization of canonical correlation served as the analytical method, employed to quantify and assess the relationship between transportation related barriers and the access of healthcare services in the specified region.

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Bacteriome analysis of -JP2 genotype-associated Grade C periodontitis in Moroccan adolescents.

Front Oral Health

November 2023

Department of Periodontology and Oral Implantology, Maurice H. Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States.

Background: Grade C (previously aggressive) periodontitis (GCP) in adolescents is prevalent in certain parts of Africa where it is associated with JP2 genotype, a highly virulent strain of . The aim of this study was to characterize the subgingival bacteriome in Moroccan subjects with GCP positive to JP2 genotype.

Methods: Subgingival plaque samples were collected from shallow and deep pockets of 8 subjects with GCP (17.

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Alginate-chitosan/hydroxyapatite (Alg-Cs/HAP) beads were prepared as adsorbent to remove methylene blue (MB) and copper ions from an aqueous solution using a batch system. FTIR, TGA, point of zero charge (pH), SEM, XRD, and BET analysis were used to characterize the elaborated material. The effect of several parameters such as initial pH value, adsorbent dose, temperature, contact time, and initial pollutant concentration were also investigated.

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Background: Xeroderma pigmentosum (XP) is a rare autosomal-recessive genodermatosis resulting from a DNA-repair defect syndrome. The purpose was to evaluate the prevention on new malignant lesions in patients taking a supplement with Fernblock® (Polypodium leucotomos extract [PLE]) and secondarily correlation with the photoprotective behavior.

Methods: A prospective, single-center and open cohort study was conducted over a 12-month period.

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The aim of this meta-analysis was to determine the risk of incident cardiovascular disease (CVD) in patients with rheumatoid arthritis compared to patients without rheumatoid arthritis. We conducted a thorough search of online databases, including PubMed, EMBASE, and Web of Science, to identify English-language publications examining cardiovascular outcomes in patients with rheumatoid arthritis from January 1, 2005, to May 15, 2023. We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

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A supercapacitor (SC) is considered to be one of the best energy storage devices due to its high-power density, long lifespan, fast charge storage capability, and eco-friendliness. Ceramics with low-cost, nontoxic, high efficiency, and stability are the suitable and promising materials for performed supercapacitors at room temperature. As proposal, we synthesized by sol-gel method the ceramics Ba(TiMn)O (where x = 0, 1, 2, or 3%) to study the effect a low rate of manganese doping on their morphological, structural, dielectric, and optical properties.

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Article Synopsis
  • * The olive pomace is pretreated and transformed into two types of adsorbents: raw (OPR) and biochar (OPB), with OPB showing significantly better adsorption capacity for phenols.
  • * The results indicate effective phenol removal (10-90%) with optimal performance at pH 10, and suggest that olive pomace adsorbents could be cost-effective solutions for treating industrial wastewater pollutants.
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TMIGD2 as a potential therapeutic target in glioma patients.

Front Immunol

June 2023

Immuno-Genetics and Human Pathology Laboratory, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco.

Introduction: Among all types of central nervous system cancers, glioma remains the most frequent primary brain tumor in adults. Despite significant advances in immunomodulatory therapies, notably immune checkpoint inhibitors, their effectiveness remains constrained due to glioma resistance. The discovery of TMIGD2 (Transmembrane and Immunoglobulin Domain Containing 2) as an immuno-stimulatory receptor, constitutively expressed on naive T cells and most natural killer (NK) cells, has emerged as an attractive immunotherapy target in a variety of cancers.

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This paper seeks to identify organisational abilities that influence the company's survival during crises. To address this issue, first-through literature review-we identified five groups of crucial organisational abilities that companies pursue during the crisis, i.e.

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Kinetics of SARS-CoV-2 IgM and IgG Antibodies 3 Months after COVID-19 Onset in Moroccan Patients.

Am J Trop Med Hyg

January 2023

Service de Parasitologie et des Maladies Vectorielles, Institut Pasteur du Maroc, Casablanca, Morocco.

Coronavirus disease (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses serious global public health problems. Characterization of the immune response, particularly antibodies to SARS-CoV-2, is important for establishing vaccine strategies. The purpose of this study was to evaluate longitudinally the kinetics of anti-SARS-CoV-2 antibodies against spike protein (S1) for up to 3 months in a cohort of 169 COVID-19 patients.

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During the last century, a great deal of effort has been directed toward determining soil erosion rates using various methods under a wide range of climatic conditions, soil types, land uses, topography, and among others. Therefore, to better understand soil erosion studies in Morocco, a country with diverse physiography and climatic variations we undertook an analysis of national data of several soil erosion modeling and fingerprinting. The approach used for this research is a review of scientific articles, conference papers and thesis on soil erosion, focusing more on categorization of the different soil erosion models and other methods applied.

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Prevalence of periodontal disease in young Moroccans: A national survey.

J Periodontol

December 2022

Department of Periodontology and Oral Implantology, Temple University School of Dentistry, Philadelphia, Pennsylvania, USA.

Background: There are few large surveys of periodontal disease in young age cohorts, and national surveys in Africa do not exist. This study assessed the prevalence and severity of periodontal disease in a national survey of adolescents and young adults in Morocco.

Methods: A multistage probability sampling design was used to draw a sample of 14,667 students 12-25 years old attending 87 schools.

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