بحوث سكوبس — امين علوان محيميد البو منصور

The nanofibrous based on the polymer that was associated with PCL, doped with different ratios of titanium dioxide (TiO2) nanopowder were successfully synthesized using the electrospun method at RT and voltage (16 kV). The products were studied using SEM, AFM, FT-IR, XRD, DSC, TG and the D.C electrical characteristics. The result of SEM analysis showed that the polymer and doped samples produce a random distribution of fine fibers at an average diameter range (95, 163 and 110) nm with a smooth surface their identification through AFM. The small capacity of the carbonyl group to operate as a powerful electron donor for interacting with TiO2 cation is shown by the fact that the FTIR signal strength decreases with increasing dopant concentration, indicating an increase in the basicity of the major functional groups. XRD analysis confirmed the existence of seme-crystalline TiO2 with PCL fibres aggregates moreover, the results of differential thermometry scanning (DSC) showed that the addition of TiO2 nanoparticles affected the crystallization of PCL polymer, which supports the results of FTIR spectroscopy and absorption analysis with the presence of interaction between nanoparticles and pure PCL chains. Further, master the measurement of thermal weight (TG). The results displayed that the D.C electrical conductivity of nanofibers increases with increasing the (TiO2) nanoparticles contents and temperatures, the (PLC/TiO2) nanofibers’ thermal activation energy values range from (2.258 eV to 1.2726 eV). © The Korean Institute of Electrical and Electronic Material Engineers 2024.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/policies/article-withdrawal). This article has been retracted at the request of the Executive Editors. An investigation conducted on behalf of the journal by Elseviers Research Integrity & Publishing Ethics team found phrases that are non-standard derivatives of established technical terms. The authors were requested to explain the use of these passages of text but were unable to do so satisfactorily. Furthermore, concerns regarding plagiarism of Vaghasiya, J.V. et al (https://doi.org/10.1038/s41528-023-00261-4) and Ahmed Mahdi Rheima et al. (https://doi.org/10.1016/j.rineng.2024.103428), and like reproduction of multiple figures without proper attribution, were not addressed by the authors. The Executive Editors have now lost confidence in the findings of the article and have determined that it should be retracted. Apologies are offered to readers of the journal that these issues were not detected during the submission process. © 2025 The Authors

Background: The Iraqi environment, especially in the southern region, has been contaminated as a result of human activities. The detection of heavy metals in water samples is the preferred method for monitoring the toxic levels, which are very important for environmental protection and human health. Methods: Heavy metal concentrations of lead (Pb), cadmium (Cd), and nickel (Ni) were investigated in water samples from Al-Muthanna governorate, southern Iraq. The selected water samples were taken from different sources of tap water and river samples from the Euphrates and collected from various locations: residential, agricultural, and industrial. Results: The mean values of Pb, Cd, and Ni in tap water samples are 3.76, 2.62, and 84.88 μg/L, respectively, while the corresponding element levels in river water are 11.21, 7.58, and 104.31 μg/L, respectively. Rivers water samples recorded higher levels of toxic metals than tap water samples. Concentrations of toxic elements in water samples from industrial locations of Al-Muthanna governorate are higher than in the agricultural and residential places. Toxic metals in water samples can be arranged in the following sequence: Ni > Pb > Cd. Conclusion: The levels of heavy metals in most water samples were above the permissible levels according to USEPA; therefore, it is recommended that the water samples should be regularly monitored for heavy metals to prevent the effect of heavy metals contamination in the human food chain. © 2025 The Author(s). Published by Bentham Science Publishers. This is an open access article published under CC BY 4.0 https://creativecommons.org/licenses/by/4.0/legalcode

The incidence of chronic diseases in contemporary society has been steadily rising with the ageing population. They place a significant strain on both people and the healthcare system, and they are the leading cause of death. As a result, novel detection methods that allow for early identification of chronic diseases to manage therapy are in high demand. Modern sensing tools have emerged in the form of biosensors, which can detect biomarkers and transform them into quantifiable signals. The fields of environmental science, agriculture, drug discovery, biotechnology, food safety, and medical diagnostics might all benefit from the data they provide. The development of more precise, sensitive, and selective diagnostic tools is, nevertheless, of the utmost importance, as is the ability to identify biomarkers as disease indicators at very low concentrations. Nano biosensors are a new generation of analytical instruments that have evolved from the integration of nanomaterials with biosensors. One promising option for continuous, real-time health monitoring is nanostructured biosensors, which provide exceptional sensitivity, selectivity, and reproducibility. Nano biosensors are categorized in this extensive study according to their size, production process, and transduction mechanism. Also, talk about the latest developments and uses for nano biosensors, and cover some important elements of them, focusing on their electrochemistry and optical characteristics. Further research is needed to fully understand nano biosensors and their potential as a tool for personalized treatment, since there are still many unknowns about their biocompatibility, toxicity, stability, and integration into the human body. © 2024 The Author(s)

The use of modern technologies in the world in various sciences has increased significantly and is expanding day by day. Relying on its unique properties, nanoscience has penetrated most sciences and has gained a special place. The textile industry, as one of the oldest and long-standing industries, has not benefited from this science and has benefited from it in various fields. Due to the large surface to volume ratio of nanofibers and the use of various polymers and raw materials as well as the variety of production processes, nanofibrous structures are one of the best materials in the application of nanotechnology. In this article, different methods of producing nanofibrous yarns in two types of yarns, continuous and non-continuous, and the parameters affecting the production are briefly introduced. © The Author(s), under exclusive licence to the Korean Fiber Society 2024.

The solvothermal technique is utilized to deposit the nanoparticles into nano-thin films. Where Vanadium dioxide (20%) was mixed with (4%) of SiC, then added to CdO with (75%) to fabricated nanocomposites. PLD technique used Nd: YAG laser with a different energy to deposit nano-thin films on p-Si substrate to get [CdO75/VO20/SiC4:p-Si]. Scanning electron microscope (SEM) revealed the expected behavior of grain formation, with granules evenly dispersed across the film surfaces of CdO, VO2, and SiC at particular places. In the presence of increased laser energy, the particle size decreases from 61 to 52 nm recognized. Elemental abundances of Cd, V, Si, C, O, and Mg were determined by energy dispersive X-ray analysis (EDX) to be relatively high. XRD revealed a polycrystalline structure with discriminatory orientations in planes (100) and (101); the peaks of SiC at (111) and (220) appeared at angles (2θ = 34.1°, and 60°), respectively. The diffraction angle (2θ = 34.1°) was observed for Mg at level (111). By increasing laser pulsing, the optical absorption of the prepared composite increases from 310 nm of S1 to 330 nm of S2 and displays blue, and the band gap energies are reduced from 2.7 eV of S1 to 2.5 eV of S2. According to the current–voltage heterojunction characteristics, the forward bias current changes rapidly with applied voltage in the dark, consistent with the tunneling-recombination model. The I-V characteristics curve presented the efficiency of synthesizing nanocomposite thin film in a solar cell is η = 11 with FF = 0.48 under illumination. © The Author(s), under exclusive licence to Springer Nature B.V. 2024.