Primary structural features, physicochemical and biological properties of two water-soluble polysaccharides extracted from the brown Tunisian seaweed Halopteris scoparia.

Marine algae are the most abundant resource in the marine environment and are still a promising source of bioactive compounds including hydrocolloids. This study contributes to the evaluation of the biological and biotechnological potentials of two water soluble polysaccharides, namely alginates (AHS) and fucoidan (FHS), extracted and purified from Halopteris scoparia, an abundant Tunisian brown macroalgae collected in Tunisia (Tabarka region). The total sugars, neutral monosaccharides, uronic acids, proteins, polyphenols, and sulfate groups contents were quantified for both fractions, as well as their functional groups and primary structural features by Fourier transform infrared spectroscopy, ionic and/or gas chromatography and nuclear magnetic resonance analyses.

Search for Heavy Neutral Leptons in Decays of W Bosons Using a Dilepton Displaced Vertex in sqrt[s]=13 TeV pp Collisions with the ATLAS Detector.

A search for a long-lived, heavy neutral lepton (N) in 139  fb^{-1} of sqrt[s]=13  TeV pp collision data collected by the ATLAS detector at the Large Hadron Collider is reported. The N is produced via W→Nμ or W→Ne and decays into two charged leptons and a neutrino, forming a displaced vertex. The N mass is used to discriminate between signal and background.

Modulation of Gut Microbiome in Ecstasy/MDMA-Induced Behavioral and Biochemical Impairment in Rats and Potential of Post-Treatment with L. Aqueous Extract to Mitigate Adverse Effects.

The use of illicit substances continues to pose a substantial threat to global health, affecting millions of individuals annually. Evidence suggests the existence of a 'brain-gut axis' as the involving connection between the central nervous system and gut microbiome (GM). Dysbiosis of the GM has been associated with the pathogenesis of various chronic diseases, including metabolic, malignant, and inflammatory conditions.

Tolerance with High Yield Potential Is Provided by Lower Na Ion Accumulation and Higher Photosynthetic Activity in Tolerant YNU31-2-4 Rice Genotype under Salinity and Multiple Heat and Salinity Stress.

The yield-reduction effect of abiotic stressors such as salinity and heat stresses with the growing world population threatens food security. Although adverse effects of salinity and heat stress on plant growth and production parameters have been documented, in nature, abiotic stresses occur sequentially or simultaneously. In this study, the stress tolerance and yield capacity of Yukinkomai, YNU31-2-4, and YNU SL rice genotypes tested under control (26 °C, 0 mM NaCl), salinity (26 °C, 75 mM NaCl), heat (31 °C, 0 mM NaCl), and heat and salinity (31 °C, 75 mM NaCl) stress combinations at vegetative and reproductive stages with six different scenarios.

Sol-Gel Synthesis of New TiO Ball/Activated Carbon Photocatalyst and Its Application for Degradation of Three Hormones: 17α-EthinylEstradiol, Estrone, and β-Estradiol.

Many approaches have been investigated to eliminate pharmaceuticals in wastewater treatment plants during the last decades. However, a lack of sustainable and efficient solutions exists for the removal of hormones by advanced oxidation processes. The aim of this study was to synthesize and test new photoactive bio composites for the elimination of these molecules in wastewater effluents.

Advances and New Perspectives in Plant-Microbe Interactions.

Plants, due to their sessile nature, are constantly exposed to a myriad of microorganisms [...

A new species of the genus Latreille, 1833 (Ephemeroptera, Prosopistomatidae) from Morocco.

We describe a new species of collected in the High Atlas Mountains of Morocco. appears to be morphologically more similar to the European highly endangered (Müller, 1785) than to the other Maghrebian species, Bojkova & Soldán, 2015. A gene tree including the few available barcode sequences of Palearctic specimens is provided.

Traditional Uses, Bioactive Compounds, and Pharmacological Investigations of L.: A Comprehensive Review.

L. (Asteraceae) is a famous ornamental and medicinal plant widely distributed in Mediterranean countries and the southern region of Europe. This reputed species is widely used in traditional medicine in the treatment of many disorders and has various bioactivities, especially anti-inflammatory, antiviral, antimutagenic, antimicrobial, insecticidal, antioxidant, and immunomodulatory activities.

Eco-friendly degradation of reactive red 195, reactive blue 214, and reactive yellow 145 by Klebsiella pneumoniae MW815592 isolated from textile waste.

The water is used in many textile manufacturing steps beyond cleaning. The quantity and the significant chemical load of the effluents generated constitute the primary challenge of the textile industry. In order to discover new sustainable methods to overcome this problem, the aim of this research was to study the potential for degradation of Reactive Blue 214, Reactive Red 195, and Reactive Yellow 145 using a dye degrading bacterium.

New fossil assemblages from the Early Ordovician Fezouata Biota.

The Fezouata Biota (Morocco) is a unique Early Ordovician fossil assemblage. The discovery of this biota revolutionized our understanding of Earth's early animal diversifications-the Cambrian Explosion and the Ordovician Radiation-by suggesting an evolutionary continuum between both events. Herein, we describe Taichoute, a new fossil locality from the Fezouata Shale.

The Effect of Chitosan on Plant Physiology, Wound Response, and Fruit Quality of Tomato.

In agriculture, chitosan has become popular as a metabolic enhancer; however, no deep information has been obtained yet regarding its mechanisms on vegetative tissues. This work was conducted to test the impact of chitosan applied at different plant growth stages on plant development, physiology, and response to wounding as well as fruit shape and composition. Five concentrations of chitosan were tested on tomato.

Mechanistic Insights into the Selective Synthesis of 4-Pyran Derivatives On-Water Using Naturally Occurring Alginate from Experimental and DFT Study.

The naturally occurring sodium alginate (SA) biopolymer from the (Yendo) Fensholt was employed as a green organocatalyst for the synthesis of 4-pyran derivatives. The naturally extracted macromolecule was fully characterized using different analyses, including nuclear magnetic resonance (NMR), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and Energy Dispersive X-ray Analysis (EDX). The catalytic activity of SA was investigated in the one-pot reaction between aldehydes, malononitrile, and 1,3-dicarbonyl compounds in water at room temperature, and the corresponding 2-amino-3-cyano-4-pyran derivatives were obtained with good to excellent yields.

Purification and biochemical characterization of catalase that confers protection against hydrogen peroxide induced by stressful desert environment: the kidney catalase.

Camel is continually exposed to stressful desert environment that enhances generation of reactive oxygen species, including hydrogen peroxide (HO). Catalase plays an important role in detoxification of HO. A highly active catalase from camel kidney was purified to homogeneity, with a specific activity of 1,774,392 U/mg protein, using ion exchange and metal chelate affinity chromatography.

Insufficient yet improving involvement of the global south in top sustainability science publications.

The creation of global research partnerships is critical to produce shared knowledge for the implementation of the UN 2030 Agenda for Sustainable Development. Sustainability science promotes the coproduction of inter- and transdisciplinary knowledge, with the expectation that studies will be carried out through groups and truly collaborative networks. As a consequence, sustainability research, in particular that published in high impact journals, should lead the way in terms of ethical partnership in scientific collaboration.

Identifying gaps in actual and simulated/potential yield and growing season precipitation in Morocco.

The influence of growing season rainfall on agricultural production is indisputable. In Morocco, the production of crops such as barley, maize, and wheat is impacted by growing season rainfall. Due to persistent gaps in growing season rainfall and other drivers of crop yield, crops have experienced observed yields that are often below projected or potential yields.

Antibiotic resistance patterns of carbapenemase-producing Enterobacterales in Mohammed VI University Hospital of Marrakech, Morocco.

Objectives: The emergence and spread of Carbapenem-Resistant Enterobacterales (CRE) has become a growing concern for health services, internationally, nationally, and regionally. In Morocco, the situation is more worrisome as studies on CRE are scarce and/or scattered and/or outdated. As a result, we carried out the present study to determine and update CRE prevalence at Mohammed VI University Hospital of Marrakech, Morocco.

Synthesis, Characterization, Biological Activity and Molecular Docking Studies of Novel Organotin(IV) Carboxylates.

Four new carboxylates complexes with general formula RSnL and RSnL, where R = -butyl (, ), methyl (, ) and L = 4-Chlorophenoxyacetate, were synthesized in significant yields. FT-IR analysis revealed a chelating ( and ) and a bridging bidentate ( and ) coordination modes for the carboxylate ligand in solid state which was further confirmed by the single crystal X-ray analysis of complex . The NMR data (H, C and Sn) revealed a higher coordination number around the tin center in RSnL ( and ) compared to RSnL ( and ).

[Reorganization of a third-level maternity ward during the COVID-19 pandemic: maternity ward experience at the University Hospital of Marrakech].

Introduction: COVID-19 pandemic has put unprecedented pressures on obstetrics and gynecology care services. Maternity hospitals have needed to rapidly prepare to provide quality care while preventing the transmission of the infection. The purpose of this study is to describe the key elements of the response to COVID-19 within the maternity ward of the Mohammed VI University Hospital in Marrakech.

Design, synthesis, evaluation of new 3-acetylisoxazolines and their hybrid analogous as anticancer agents: In vitro and in silico analysis.

3-Acetylisoxazolines were synthesized by the reaction of natural (R)-limonene and (R)-carvone with acetone in the presence of iron (III) nitrate. The reaction showed to be highly peri- and regioselective. Next, using a 1,3-dipolar cycloaddition reaction, the mono-3-acylisoxazolines derived from these monoterpenes were evaluated for their reactivity with nitrilimines.

A Calibration/Disaggregation Coupling Scheme for Retrieving Soil Moisture at High Spatio-Temporal Resolution: Synergy between SMAP Passive Microwave, MODIS/Landsat Optical/Thermal and Sentinel-1 Radar Data.

Soil moisture (SM) data are required at high spatio-temporal resolution-typically the crop field scale every 3-6 days-for agricultural and hydrological purposes. To provide such high-resolution SM data, many remote sensing methods have been developed from passive microwave, active microwave and thermal data. Despite the pros and cons of each technique in terms of spatio-temporal resolution and their sensitivity to perturbing factors such as vegetation cover, soil roughness and meteorological conditions, there is currently no synergistic approach that takes advantage of all relevant (passive, active microwave and thermal) remote sensing data.

[Epidemiological, clinical, therapeutic and evolutionary features of patients with glioblastoma: series of cases managed in the Department of Hematology-Oncology at the Mohammed VI University Hospital Center in Marrakech in 2016 and 2017].

Glioblastoma is the most common primary malignant brain tumour. Despite advances in diagnostic and therapeutic treatments, it is still associated with poor outcome The purpose of this study of cases is to describe the epidemiological, clinical, therapeutic and evolutionary features of patients with glioblastoma admitted to the Department of Hematology-Oncology (DHO) in Marrakech in 2016 and 2017. We conducted a literature review of epidemiological, clinical, radiological, anatomopathological, therapeutic and evolutionary data from 40 patients.

[Activity report of the Bone Marrow Transplant Department of the Mohammed VI University Hospital, Marrakech, Morocco, over the period 2012- 2018].

Introduction: hematopoietic stem cell transplantation (HSCT) is part of the cellular immunotherapy arsenal. It is used in the treatment of several malignant and non-malignant hematological conditions as well as other extra-hematological diseases. HSCT has been described since 1950 and introduced in Morocco since the 2000s.