Publications by authors named "Daoudi K"

Our study focuses on sustainable dye wastewater management through catalysis, scrutinized by surface-enhanced Raman spectroscopy (SERS) using an ecofriendly magnetic nanocomposite (FeO/SiO/Ag (FSA)). To our knowledge, the use of green synthesis for fabricating nanocomposites from a single source, namely Nerium oleander leaves, has not been extensively explored. This poses a distinctive and challenging approach, differentiating it from conventional chemical methods.

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The emergence of coronavirus disease 2019 (COVID-19) posed a major challenge to healthcare systems worldwide, especially as mutations in the culprit Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) complicated the development of vaccines and antiviral drugs. Therefore, the search for natural products with broad anti-SARS-CoV-2 capabilities is an important option for the prevention and treatment of similar infectious diseases. Lectins, which are widely recognized as antiviral agents, could contribute to the development of anti-SARS-CoV-2 drugs.

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Objectives: This study addresses the growing demand for palliative care (PC) by exploring the role of advanced nursing practice (ANP) within the multidisciplinary team. The purpose is to outline the background of ANP in PC, its interest, training needs, and some recommendations for its establishment in the Moroccan healthcare system.

Materials And Methods: A rapid review of relevant studies was carried out through databases following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses standards, edition (2020).

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A highly flexible and cost-effective copper tape decorated with silver nanoparticles (Cu-TAg) has been developed for surface-enhanced Raman spectroscopy (SERS) sensing of multi-hazardous environmental pollutants. Highly ordered and spherical-shaped silver nanoarrays have been fabricated using a low-cost thermal evaporation method. The structural, morphological, and optical properties of Cu-TAg sensors have been studied and correlated to the corresponding SERS performances.

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Rapid diagnostics of any gene mutations related to organ loss is highly demanded now-a days to consume time as well to reduce cost. Currently, Surface enhanced Raman spectroscopy (SERS) is evolved to be a rapid investigating tool to screen gene mutations down to single molecule sensing with regard to the design and development of substrates used for sensing. The current research focuses on particular towards direct detection of deafness mutations associated with single and dual sites related to GJB2 gene.

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Article Synopsis
  • Surface-enhanced Raman spectroscopy (SERS) is being used to rapidly and sensitively detect antibiotic residues in wastewater, showcasing its potential for environmental monitoring.
  • Researchers developed highly ordered silver nanoarrays, which provide significant enhancement for SERS detection, allowing for the identification of antibiotics even at picomolar levels.
  • Multivariate analysis techniques like PCA-LDA confirmed the specific identification of various antibiotics, indicating that these Ag nanoarray sensors could serve as efficient, low-cost tools for monitoring pharmaceutical pollutants in the environment.
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Piezo-photocatalysis of ZnO nanostructures had recently well attracted due to their exceptional potential in degrading the antibiotics and scalable hydrogen production. Here, we have synthesized the Ce doped ZnO nanospheres in a facile wet chemical strategy. Dopant ions induced morphological evolution and optical bandgap tuning had observed in our experiment.

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A disintegrin and metalloproteinase (ADAM) family proteins are a major class of membrane-anchored multidomain proteinases that are responsible for the shedding of cell surface protein ectodomains, including amyloid precursor protein (APP). Human ADAM 9, 10, and 17 proteolyze APPs and produce non-amyloid-genic p3 peptides, instead of neurotoxic amyloid-β peptides (Aβs; Aβ40 and Aβ42), which form fibrils and accumulate in the brain of patients with Alzheimer's disease (AD). The ADAM family is closely related to snake venom metalloproteinases (SVMPs), which are derived from ancestral ADAMs but act as soluble proteinases.

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Owing to the excellent optoelectronic properties of metal nanoparticle-semiconductor interfaces; hybrid substrates with superior catalytic and sensing properties can be designed. In the present study, we have attempted to evaluate anisotropic silver nanoprisms (SNP) functionalized titanium dioxide (TiO) particles for multifunctional applications such as SERS sensing and photocatalytic decomposition of hazardous organic pollutants. Hierarchical TiO/SNP hybrid arrays have been fabricated via facile and low-cost casting techniques.

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  • Researchers created silver nanoprism/silicon nanoparticle hybrid arrays for sensitive biomolecule detection using surface-enhanced Raman spectroscopy (SERS).
  • The size and phosphorous doping of silicon nanoparticles significantly influenced the SERS enhancement quality, with the largest SiNPs providing the best results.
  • The hybrid arrays demonstrated high stability, reproducibility, and even enabled DNA detection at a low concentration of 1.5 pg/µL, indicating their potential as a useful biosensing tool.
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While speech disorder represents an early and prominent clinical feature of atypical parkinsonian syndromes such as multiple system atrophy (MSA) and progressive supranuclear palsy (PSP), little is known about the sensitivity of speech assessment as a potential diagnostic tool. Speech samples were acquired from 215 subjects, including 25 MSA, 20 PSP, 20 Parkinson's disease participants, and 150 healthy controls. The accurate differential diagnosis of dysarthria subtypes was based on the quantitative acoustic analysis of 26 speech dimensions related to phonation, articulation, prosody, and timing.

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Hepatocellular carcinoma (HCC) is the most dominant primary liver cancer, which can be caused by chronic hepatitis virus infections and other environmental factors. Resection, liver transplantation, and local ablation are only a few of the highly effective and curative procedures presently accessible. However, other complementary treatments can reduce cancer treatment side effects.

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Scorpion envenomation is a serious public health issue.  () and  () are the most dangerous scorpions in Morocco. Despite their medical relevance, no study has yet related their kinetics of symptom apparition and the consequent tissue disorders at the same interval post-injection.

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Severe acute respiratory syndrome SARS-CoV-2 virus led to notable challenges amongst researchers in view of development of new and fast detecting techniques. In this regard, surface-enhanced Raman spectroscopy (SERS) technique, providing a fingerprint characteristic for each material, would be an interesting approach. The current study encompasses the fabrication of a SERS sensor to study the SARS-CoV-2 S1 (RBD) spike protein of the SARS-CoV-2 virus family.

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Hepatocellular carcinoma (HCC) is the most common primary liver cancer in adults, the fifth most common malignancy worldwide and the third leading cause of cancer related death. An alternative to the surgical treatments and drugs, such as sorafenib, commonly used in medicine is necessary to overcome this public health problem. In this study, we determine the anticancer effect on HCC of Moroccan cobra venom and its fraction obtained by gel filtration chromatography against Huh7.

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Introduction: Systemic sclerosis starts with an early phase characterized by Raynaud's phenomenon, puffy fingers/hands, autoantibodies, and a scleroderma nailfold microscopic pattern. Alterations in the nailfold microscopic pattern are not evident in all early SSc patients. Photoacoustics (PA) and high-frequency ultrasound (HFUS) could fulfill this need.

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Article Synopsis
  • Researchers created silicon nanowires (SiNWs) using a silver-assisted chemical etching method and analyzed their structure with various microscopy techniques.
  • The morphology and length of the SiNWs were found to depend on the etching time and etchant concentration, allowing precise control of their dimensions from 1 to 42 µm.
  • When modified with graphene oxide (GO), the SiNWs exhibited significantly enhanced photocatalytic activity, achieving a 92% degradation rate for organic pollutants, which improved to 96% with added hydrogen peroxide, demonstrating their potential for environmental applications.
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Surface enhanced Raman scattering (SERS) is an important analytical tool for the optochemical detection of molecules. The enhancement is commonly achieved by engineering (i) novel types and morphologies of plasmonic nanomaterials, and (ii) patterned or roughened supporting substrates of high surface area for increased light scattering and molecule adsorption. Si substrates can be easily and reproducibly textured for effective SERS applications.

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We study the transport properties of coherent vortices over a finite-time duration. Here, we reveal that such vortices can be identified based on the frequency-domain representation of Lagrangian trajectories. We use Fourier analysis to convert particles' trajectories from their time domain to a presentation in the frequency domain.

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Near-shore water along the North-West African margin is one of the world's major upwelling regions. It is associated with physical structures of oceanic fronts which influence the biological productivity. The study of these coherent structures in connection with chlorophyll concentration data is of fundamental importance for understanding the spatial distributions of the plankton.

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  • Photoacoustic imaging (PAI) is a new biomedical imaging method that can visualize cells and has good penetration depth, utilizing endogenous contrasts like melanin and hemoglobin.
  • Indocyanine green (ICG), an FDA-approved dye, is often limited due to quick clearance and photobleaching, but encapsulating it in nanoparticles enhances its stability and makes it useful for imaging.
  • The study shows that these ICG-loaded nanoparticles can effectively label and image human dendritic cells and also detect signals in lymph nodes after injection, indicating a promising approach for clinical applications in cell imaging.
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We evaluate a portable ultrasound and photoacoustic imaging (PAI) system for the feasibility of a point-of-care assessment of clinically evident synovitis. Inflamed and non-inflamed proximal interphalangeal joints of 10 patients were examined and compared with joints from 7 healthy volunteers. PAI scans, ultrasound power Doppler (US-PD), and clinical examination were performed.

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The thermal effect of high intensity focused ultrasound (HIFU) has been clinically exploited over a decade, while the mechanical HIFU is still largely confined to laboratory investigations. This is in part due to the lack of adequate imaging techniques to better understand the pathological and immunological effects caused by the mechanical treatment. In this work, we explore the use of high frequency ultrasound (US) and photoacoustics (PA) as a potential tool to evaluate the effect of mechanical ablation , e.

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() and () scorpions, which belong to the family, are the most venomous scorpions in Morocco. For the first time, we investigated the effects of such scorpion venoms on serum electrolytes in subcutaneously injected rabbits. For this purpose, 3 groups of 6 albinos adult male rabbits (New Zealand) were used in this experiment.

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