15,284 results match your criteria: "National research Centre[Affiliation]"

Background: There are no studies belong NOTCH2 gene polymorphism in relation to reproductive and productive traits in Holstein cattle. The objective of the present study was to investigate the effect of NOTCH2 gene polymorphisms on productive and reproductive performance of fertile and anestrum cattle.

Methods: The cattle were classified into anestrus for 3-12 months postpartum (n = 115, 37.

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Sugarcane is a major industrial crop highly susceptible to parasitic weed (Striga spp.), causing a 38% reduction in cane yield due to a longer lag phase of 20-40 days, and wider spacing. Herbicides with a longer retention and slow-release nature could allow Striga seeds to germinate and be killed before attaching to the host.

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Urbanization enhances consumer protist-driven ARGs dissemination in riverine ecosystems.

Environ Int

January 2025

CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Carbon Neutral Innovation Research Center, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, 361005, China. Electronic address:

Despite the emergence of antibiotic resistance genes (ARGs) and antibiotic resistant bacteria (ARBs), how biological inter-trophic interactions, modulated by watershed urbanization, shape the resistome remains unexplored. We collected water samples from the highly urbanized (western: 65 % built land, sewage-affected) and lesser-urbanized (northern: 25 % built land, drinking water source) downstream tributaries of the Jiulong River in southeast China over dry and wet seasons. We utilized metagenomic and amplicon (16S and 18S rDNA) sequencing to investigate the relationships among microeukaryotic algae, consumer protists, bacterial communities, and the resistome.

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The host range of HPAIV H5N1 was recently expanded to include ruminants, particularly dairy cattle in the United States (US). Shortly after, human H5N1 infection was reported in a dairy worker in Texas following exposure to infected cattle. Herein, we rescued the cattle-origin influenza A/bovine/Texas/24-029328-02/2024(H5N1, rHPbTX) and A/Texas/37/2024(H5N1, rHPhTX) viruses, identified in dairy cattle and human, respectively, and their low pathogenic forms, rLPbTX and rLPhTX, with monobasic HA cleavage sites.

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Background: Veterinarians have a high prevalence of mental health disorders, such as depression. Previous research suggests that veterinarians are highly exposed to emotional demands at work and that these emotional demands are associated with adverse mental health outcomes. However, little is known about the consequences of the simultaneous exposure to emotional demands and other types of job demands in clinical veterinary practice.

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The triad of physical activity: An optimal combination for cardiovascular health.

Trends Cardiovasc Med

December 2024

Centro de Investigación Biomédica, Facultad de Medicina, Universidad Diego Portales, Santiago, Chile.

The combination of moderate to vigorous physical activity with muscle-strengthening physical activity is increasingly recognized for its significant impact on cardiovascular health. This narrative review synthesizes current evidence to compare the cardiovascular benefits of combined physical activity versus singular forms, especially in primary prevention. The main focus is on hormonal, nervous, genetic, and molecular adaptations, critical mechanisms underlying the body's response to physical activity.

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Design and commissioning of the PRIOR-II "proton microscope for FAIR".

Rev Sci Instrum

December 2024

Plasmaphysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.

A new high energy proton radiography facility PRIOR-II (Proton Microscope for FAIR) has been designed, constructed, and successfully commissioned at the GSI Helmholtzzentrum für Schwerionenforschung (Darmstadt, Germany) pushing the technical boundaries of charged particle radiography with normal conducting magnets to the limits. The setup is foreseen to become a new and powerful user facility for carrying out fundamental science experiments in the fields of plasma and shock wave physics, material science, and medical physics. It will help address several unsolved scientific challenges, which require high-speed and precise non-invasive diagnostic methods capable of probing matter with up to 100 g/cm2 areal density.

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Liver fibrosis is a significant contributor to global morbidity and mortality, making the identification of non-toxic natural therapies to slow its progression essential. This study evaluated the anti-fibrotic potential of a nutraceutical blend comprising extra virgin olive oil, linseed oil, and ginger extract, formulated in both emulsion and nanoemulsion forms, using a rat model of liver fibrosis. Nanoemulsions were prepared using the ultrasonication technique, and their particle size and stability were analyzed via the DLS method.

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Article Synopsis
  • Bacterial blight in pomegranate, caused by Xanthomonas citri pv. punicae (Xcp), is a major issue leading to significant economic losses, with current management primarily relying on antibiotics and copper-based treatments.
  • The excessive use of antibiotics has led to antibiotic resistance, prompting research into eco-friendly alternatives like native endophytes, which are beneficial bacteria isolated from pomegranate plants that can inhibit Xcp growth through the production of antimicrobial volatiles.
  • Field trials showed that using these endophytes reduced the disease index by 47-68%, outperforming traditional chemical treatments, making them promising candidates for sustainable bacterial blight management in pomegranate cultivation.
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This study explores honeybee as a food source through chemical analysis of pupa and adult stages of honeybee drones and workers ( L.). The findings reveal that drones exhibited higher protein and fat content, while workers have the highest carbohydrate levels.

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We investigated the effect of propolis as a sanitiser on hatched eggs previously infected with avian Pathogenic Escherichia coli (E. coli) (APEC) serogroup O78. A green propolis watery extract at 24% and a native breed hatching eggs have been used in this study.

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An efficient synthesis of a series of uracil analogous was performed to obtain new potential anticancer agents. The cytotoxic effect of the synthesized derivatives was assessed in vitro against three cancer cell lines, namely hepatic cancer (HepG-2), colon cancer (HCT-116), and breast cancer (MCF-7). Among the tested compounds, 5, 11 and 15 stood as potent uracil derivatives with pan cytotoxicity against the 3 cell lines out-performing the reference compound 5-FU.

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One of the biggest challenges in food packaging is the creation of sustainable and eco-friendly packaging materials to shield foods from ultraviolet (UV) photochemical damage and to preserve the distinctive physical, chemical, and biological characteristics of foods throughout the supply chain. Accordingly, this study focuses on enhancing the UV shielding properties and biological activity of carboxylmethyl cellulose sodium (CMC) through modifications using zinc oxide (ZnO), copper oxide (CuO), and graphene oxide (GO) using the solution casting technique. The hybrid nanocomposites were characterized by fourier-transform infrared (FTIR) spectrophotometer, ultraviolet-visible (UV-Vis) spectrophotometer, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and x-ray diffraction (XRD).

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This paper contributes to the expanding knowledge base on nanomaterial-enhanced cementitious composites, offering valuable insights for developing high-performance, sustainable concrete solutions. The study assessed the effects of three different types of nanomaterials-nano clay (NC), nano silica (NS), and nano cellulose (NCel)-on the compressive strength of high-early-strength concrete (HESC) through both experimental studies and a 2 factorial design. Incorporating nanomaterials into the HESC matrix led to a decrease in workability, with NCel demonstrating the least impact on this property across all studied replacement percentages.

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Article Synopsis
  • Barium fluoride borosilicate glass samples, reinforced with varying amounts of GdO, were created to study their structural, physical, and optical properties as well as their ability to attenuate γ-rays.
  • X-ray diffraction confirmed the glasses were amorphous, and did show slight increases in density and molar volume with more GdO.
  • UV-Vis spectra indicated increased absorbance and shifts in optical properties, suggesting that these materials could be useful for opto-electronic devices and radiation shielding.
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Diabetes can affect male fertility via oxidative stress and endocrine system disruption. Nanomedicine based on natural products is employed to address diabetes complications. The current study aims to investigate the potential beneficial effect of propolis extract nanoparticles against diabetes-induced testicular damage in male rats.

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Dyeing of synthetic fiber-based wool blended fabrics in supercritical carbon dioxide.

Sci Rep

December 2024

Dyeing, Printing and Textile Auxiliaries Department, Textile Research and Technology Institute, National Research Centre, 33 EL Buhouth St., Dokki, 12622, Giza, Egypt.

Development of supercritical carbon dioxide (SC-CO) dyeing technology for natural fabrics and their blended fabrics is essential for the textile industry due to environmental and economic considerations. Wool (W), polyester (PET) and nylon (N) fabrics and their wool/polyester (W/PET) and wool/nylon (W/N) blended fabrics were dyed in SC-CO medium with a synthesized reactive disperse dye containing a vinylsulphone (VS) reactive group, which behaves as a disperse dye for synthetic fibers and a reactive dye for protein fibers. The SC-CO dyeing performance of all fabrics was investigated in terms of color strength, fixation, colorimetric and fastness measurements and compared with the conventional aqueous dyeing method.

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Antioxidant and antimicrobial activities of methanolic extract and its phytochemical characterization.

Open Life Sci

December 2024

Plant Protection and Biomolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria, 21934, Egypt.

Methanolic extract from was investigated for its phytochemical content, antioxidant, and antimicrobial properties against phytopathogenic fungi and bacteria. Phytochemical analysis revealed the presence of saponin, tannins, and alkaloids with 1.25%, 18.

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Since its inception in 2003, the African Society of Human Genetics (AfSHG) has been central to the promotion of genetics research on the continent, and facilitated the networking of African researchers within Africa and abroad, thereby significantly contributing to the career development of African geneticists. The continuation of these accomplishments was stimulated by the 12 international conference of AfSHG held jointly with the 1 Congress of the Malian Society of Human Genetics (MSHG) in Bamako, Mali from September 18 to 21 2019. The main theme of the conference was "Human Genetics and Genomics as a Unifying Factor for Harmony and Progress in Africa".

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Article Synopsis
  • The study aimed to evaluate the effects of thyme powder (TP), garlic powder (GP), and their combination on broiler chickens, focusing on growth performance, blood health, and carcass quality.
  • The experiment involved 264 broiler chicks divided into four groups receiving different dietary treatments, which showed that TP, GP, and their combination significantly improved feed intake, growth rates, and carcass characteristics compared to a control group.
  • Notable improvements in immune function and oxidative stress markers were observed, particularly with the combination treatment, suggesting enhanced overall health and the potential of these natural additives as alternatives to antibiotics.
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Article Synopsis
  • The study aimed to assess the biomechanical performance of different designs of three-unit implant-supported prostheses using two materials (Zirconia and PEKK) under various loading conditions.
  • Three models were created with different implant placements to analyze three designs: distal cantilever, fixed-fixed, and mesial cantilever, utilizing finite element analysis for stress evaluation.
  • Results indicated that the fixed-fixed design performed best, with PEKK showing lower stress in some areas but higher stress in others compared to Zirconia, highlighting the importance of design and material choice in prosthodontics.
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Leprosy is a chronic infectious disease which mainly affects the skin, nasal mucosa, and peripheral nerves. The aim of this study was to compare between the efficacies of serum anti-phenolic glycolipid 1 (APGL-I) level versus slit skin smear (SSS) in diagnosis of leprosy. This study involved 58 leprosy cases who were clinically examined, slit-skin smears were taken from all at diagnosis from four sites and APGL-I levels were seroassayed using ELISA.

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Background: Psychosocial hazards in the workplace contribute to mental disorders, cardiovascular diseases, and musculoskeletal ill-health. The Hierarchy of Controls applied to NIOSH Total Worker Health (TWH HOC) aims to mitigate these hazards through effective interventions. This study proposes a revision of the model resulting in a HOC for psychosocial hazards (P-HOC) and explores its application in improving the working environment.

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Mesoporous Lanthanum-Doped Magnesium Phosphate Nanopowders Promote Healing of Critical-Size Bone Defects: An In Vivo Study.

J Biomed Mater Res B Appl Biomater

January 2025

Refractories, Ceramics and Building Materials Department, Advanced Materials Technology and Mineral Resources Research Institute, National Research Centre, Cairo, Egypt.

Treating severe bone deformities and abnormalities continues to be a major clinical hurdle, necessitating the adoption of suitable materials that can actively stimulate bone regeneration. Magnesium phosphate (MP) is a material that has the ability to stimulate the growth of bones. The current study involved the synthesis of mesoporous MP and lanthanum (La)-doped nanopowders using a chemical precipitation approach.

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