79 results match your criteria: "Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh 11671 Saudi Arabia.[Affiliation]"

A novel molecular design based on a quinazolinone scaffold was developed the attachment of aryl alkanesulfonates to the quinazolinone core through a thioacetohydrazide azomethine linker, leading to a new series of quinazolinone-alkanesulfonates 5a-r. The antimicrobial properties of the newly synthesized quinazolinone derivatives 5a-r were investigated to examine their bactericidal and fungicidal activities against bacterial pathogens like , (Gram-positive), , , (Gram-negative), in addition to (unicellular fungal). The tested compounds demonstrated reasonable bactericidal activities compared to standard drugs.

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Objective: This study aims to investigate the potential of designed 2,3-dihydro-1,3,4-thiadiazole derivatives as anti-proliferative agents targeting VEGFR-2, utilizing a multidimensional approach combining and analyses.

Methods: The synthesized derivatives were evaluated for their inhibitory effects on MCF-7 and HepG2 cancer cell lines. Additionally, VEGFR-2 inhibition was assessed.

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Surface Enhanced Raman Spectroscopy (SERS) is a highly sensitive analytical technique used for fingerprint recognition of molecular samples. The SERS effect, which enhances Raman scattering signals, has been the subject of extensive research over the past few decades. More recently, the commercialization of portable Raman spectrometers has brought SERS closer to real-world applications.

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Article Synopsis
  • The increasing presence of pharmaceutical residues threatens ecosystems, highlighting the need for effective materials to absorb these contaminants; waste eggshells serve as a potential recyclable resource for creating valuable adsorbents.
  • CaO-based ZnFe-layered double hydroxide is shown to be a promising adsorbent for caffeine, demonstrating biodegradability, minimal toxicity to human cells, and strong antimicrobial properties against various bacteria.
  • The study evaluated various factors affecting adsorption efficiency and confirmed the materials’ efficacy through multiple analytical techniques, supporting sustainable development and zero-waste initiatives.
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Water is a fundamental resource, yet various contaminants increasingly threaten its quality, necessitating effective remediation strategies. Sustainable polymeric adsorbents have emerged as promising materials in adsorption-based water remediation technologies, particularly for the removal of contaminants and deactivation of water-borne pathogens. Pathogenetic water contamination, which involves the presence of harmful bacteria, viruses, and other microorganisms, poses a significant threat to public health.

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Expression of concern for 'A well-defined S-g-CN/Cu-NiS heterojunction interface towards enhanced spatial charge separation with excellent photocatalytic ability: synergetic effect, kinetics, antibacterial activity, and mechanism insights' by Haya A. Abubshait , , 2022, , 3274-3286, https://doi.org/10.

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Article Synopsis
  • The expression of concern highlights potential issues regarding the validity of the data and conclusions presented in the paper about the S-scheme heterojunction, which combines g-CN and Co-ZF for improved photocatalytic activity.
  • The authors are being urged to clarify their methods and results to ensure the reliability of their findings related to charge separation and photocatalytic performance under sunlight.
  • This notice reflects the ongoing importance of transparency and rigor in scientific research, aiming to uphold the integrity of published studies in the field.
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A theoretical study of monolayer boron phosphorous nitride (BPN) is performed to explore its electronic and thermoelectric properties. The thermodynamic stability is determined by the formation energy of a monolayer. The dynamic stability is obtained from the phonon dispersion curve.

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Two forms of morphologically transformed glauconite (GL) involved exfoliated nanosheets (EXG) and nanorods (GRs), which were synthesized by facile exfoliating and scrolling modification under sonication. The two advanced forms (EXG and GRs) were applied as enhanced adsorbents for U(vi) ions and compared with using raw glauconite. The developed GRs structure displays higher saturation retention properties (319.

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  • The study investigates the use of Ni-based catalysts on titania-zirconia to achieve high hydrogen (H) yield and H/CO ratios through partial oxidation of methane (POM) at 600 °C.
  • The addition of 2.5 wt% strontium (Sr) to the catalyst significantly improved performance by enhancing the formation of active sites, leading to 45% CH conversion and 47% H yield with a H/CO ratio of 3.5.
  • Further optimization of the process led to predicted and validated results of approximately 88% CH conversion and 86-87% H yield at higher temperatures and specific conditions.
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In the current study, CuO, ZnCoO, CuO/ZnCoO, and CuO/ZnCoO/CNTs photocatalysts were prepared to remove crystal violet (CV) and colorless pollutants (diclofenac sodium and phenol) from wastewater. Herein, sol-gel and co-precipitation methods were used to synthesize CuO and ZnCoO, respectively. The sonication method was used to synthesize CuO/ZnCoO and a CNTs-based composite (CuO/ZnCoO/CNTs).

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In this work, a congeneric set of quinoline-tethered -vinyl triamide hybrids was prepared and evaluated as EGFR tyrosine kinase inhibitors for the management of breast cancer. All of the prepared hybrids were evaluated for their antiproliferative effect against the breast MCF-7 cell line. Among the tested hybrids, compound 6f displayed the most potent antiproliferative activity with an IC value of 1.

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The low cost and ecological compatibility of green technology makes it superior to chemical approaches in the generation of metal nanoparticles. The current study shows the use of cranberry fruit extract in the environmentally friendly green production of palladium nanoparticles. It is well known that the fruit extract from cranberries has a rich phytochemical composition that makes it a useful bio reducing agent for the formation of PdNPs.

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Indigo carmine dye is one of the most widely used dyes in various fields. In this study, the ethanolic extract of red dragon fruit peel (Ex-RDFP) was employed as a green fluorescence probe for measuring the synthetic dye indigo carmine. At a fluorescence excitation of 290.

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Article Synopsis
  • New effective antitumor agents targeting the EGFR are necessary due to their significance in cancer treatment, leading to the creation of imidazolone-sulphonamide-pyrimidine hybrids as analogs to existing EGFR inhibitors.
  • Among the synthesized compounds, 4-(Furan-2-ylmethylene)imidazolone-sulphonamide-pyrimidine 6b displayed the strongest cytotoxicity against breast cancer MCF-7 cells, with an IC value of 1.05 μM, outperforming the standard treatment doxorubicin.
  • The studies indicated that compound 6b not only inhibits EGFR kinase but also causes MCF-7 cells to arrest at the G1 phase
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Article Synopsis
  • Scientists are working on creating solar cells that are better for the environment and more reliable by using new materials that don’t have harmful elements.
  • They studied a special type of solar cell made with non-toxic and stable materials, which helps solve problems with previous designs.
  • The research showed how important certain properties, like the thickness of layers and temperature, are for making these solar cells work super well.
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Mg-doped copper chromite (CuCrO) nanocomposites were synthesised through conventional technique. The pure and doped CuCrMg O ( = 0.00-0.

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The precise manipulation of electromagnetic and thermoelectric characteristics in the miniaturization of electronic devices offers a promising foundation for practical applications in quantum computing. Double perovskites characterized by stability, non-toxicity, and spin polarization, have emerged as appealing candidates for spintronic applications. This study explores the theoretical elucidation of the influence of iridium's 5d electrons on the magnetic characteristics of SrAIrO (A = Y, Lu, Sc) with WIEN2k code.

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Bacterial resistance towards antibiotics is a significant challenge for public health, and surface-enhanced Raman spectroscopy (SERS) has great potential to be a promising technique to provide detailed information about the effect of antibiotics against biofilms. SERS is employed to check the antibacterial potential of a lab synthesized drug ([bis(1,3-dipentyl-1-imidazol-2(3)-ylidene)silver(i)] bromide) against and to analyze various SERS spectral features of unexposed and exposed strains by observing biochemical changes in DNA, protein, lipid and carbohydrate contents induced by the lab synthesized imidazole derivative. Further, PCA and PLS-DA are employed to differentiate the SERS features.

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Today, textile-based wearable electronic devices (textronics) have been developed by taking advantage of nanotechnology and textile substrates. Textile substrates offer flexibility, air permeability, breathability, and wearability, whereas, using nanomaterials offers numerous functional properties, like electrical conductivity, hydrophobicity, touch sensitivity, self-healing properties, joule heating properties, and many more. For these reasons, textronics have been extensively used in many applications.

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Layered double hydroxides (LDH) are promising 2D nanomaterials being investigated for several engineering and biomedical applications. In this work, quinary Zr Al Fe Co Ni LDH and its Al Fe Co Ni LDH quaternary and Fe Co Ni LDH tertiary roots were prepared and characterized. All samples showed an aggregated, layered morphology with zero surface charge and approximately 300 nm of hydrodynamic size.

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The present work aims at design and synthesis of a congeneric series of small hybrids 5 and 6a-i featuring the privileged quinoline scaffold tethered with 2-(arylamido)cinnamide moiety as potential anticancer tubulin polymerization inhibitors. Most of the synthesized hybrids 5 and 6a-i significantly inhibited the growth of the HepG2 cell line, with IC ranged from 2.46 to 41.

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Design and application of metal organic frameworks for heavy metals adsorption in water: a review.

RSC Adv

March 2024

Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux, Faculty of Sciences, MohammedV University in Rabat Morocco

The growing apprehension surrounding heavy metal pollution in both environmental and industrial contexts has spurred extensive research into adsorption materials aimed at efficient remediation. Among these materials, Metal-Organic Frameworks (MOFs) have risen as versatile and promising contenders due to their adjustable properties, expansive surface areas, and sustainable characteristics, compared to traditional options like activated carbon and zeolites. This exhaustive review delves into the synthesis techniques, structural diversity, and adsorption capabilities of MOFs for the effective removal of heavy metals.

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