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Analysis of hydration, material properties, and pore structure of polymers enhanced with dendritic fibrous nanosilica as a concrete additive

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RSC ADVANCES 2025年第13期15卷 10215-10226页

作者： Azizi, Mohammad Honarbakhsh, Amin Movahedifar, Seyed Mojtaba Nobahari, Mehdi Zhiani, Rahele Islamic Azad Univ Dept Civil Engn Neyshabur Branch Neyshabur Iran Islamic Azad Univ New Mat Technol & Proc Res Ctr Dept Civil Engn Neyshabur Branch Neyshabur Iran Islamic Azad Univ Adv Res Ctr Chem Biochem & Nanomat Neyshabur Branch Neyshabur Iran Islamic Azad Univ Dept Chem Neyshabur Branch Neyshabur Iran

Different cement-based grouting and repair materials have been created and are commonly employed in construction renovation projects. Nevertheless, conventional cement mortars face challenges like limited corrosion resistance and weak bonding strength. Polymers, commonly used as modifiers for repair mortars, provide enhanced mechanical properties, increased resistance to corrosion, and better bonding. Despite these advantages, many polymer modifiers are inherently limited in preventing crack initiation and propagation, while also increasing costs. This study incorporated different amounts of three types of polymers supported on dendritic fibrous nanosilica (DFNS-polymers) into cement mortar to evaluate their effects on mortar performance, pore structure, and cement hydration. The addition of DFNS-polymers significantly improved the durability and workability of the mortar. Moreover, the pore structure was optimized, resulting in a more balanced pore distribution and a reduction in pore and porosity size. This research introduces an effective approach to enhancing the performance of repair mortars by combining polymers with suitable fillers.

关键词： Mortar

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Dendritic fibrous nanosilica activated bovine excrement fiber to enhance the initial characteristics and durability of concrete

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RSC ADVANCES 2025年第5期15卷 3979-3987页

作者： Karimi, Mohsen Movahedifar, Seyed Mojtaba Honarbakhsh, Amin Nobahari, Mahdi Zhiani, Rahele Islamic Azad Univ Dept Civil Engn Neyshabur Branch Neyshabur Iran Islamic Azad Univ New Mat Technol & Proc Res Ctr Dept Civil Engn Neyshabur Branch Neyshabur Iran Islamic Azad Univ Dept Chem Neyshabur Branch Neyshabur Iran Islamic Azad Univ New Mat Technol & Proc Res Ctr Dept Chem Neyshabur Branch Neyshabur Iran Islamic Azad Univ Adv Res Ctr Chem Biochem & Nanomat Neyshabur Branch Neyshabur Iran

The global agricultural sector has persistently grappled with the effective handling of bovine waste. This research repurposes bovine waste into a cost-effective and sustainable fiber, which is subsequently treated with dendritic fibrous nanosilica (DFNS) to produce CDF/DFNS. This is then integrated into cement-based composites. This study aimed to introduce CDF/DFNS to enhance the operational efficiency and longevity of Portland cement with notable sulfate resistance. Concurrently, CDF/DFNS was incorporated into cement mortar, and an examination of the aggregation of CDF/DFNS, along with the aquation procedure and microstructure of the mortar, was conducted. The investigation indicated that incorporating CDF/DFNS enhanced the toughness, tangible attributes, and imperishability of the cement specimens. The integration of CDF/DFNS resulted in a reduction in both the parameters related to the movement of chloride ions and the volume of voids in a material. Furthermore, the ability of cement mortar to resist compression forces was improved with the presence of CDF/DFNS as opposed to control samples. These improvements in strength and imperishability suggested that CDF/DFNS holds significant potential in reducing CO2 emissions in the concrete industry.

关键词： Portland cement

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Cosmological inflation in the modified gravity model f ( Q, C)

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PHYSICS OF THE DARK univERSE 2025年 47卷

作者： Sadatian, S. Davood Hosseini, S. Mohamad Reza Univ Neyshabur Fac Basic Sci Dept Phys POB *** Neyshabur Iran Univ Neyshabur Res Dept Astron & Cosmol POB *** Neyshabur Iran

Slow-roll parameters play a crucial role in characterizing the behavior of the inflation field during inflation. This paper provide an overview of the topic and highlight various aspects of the connection between cosmological inflation and slow-roll parameters. We also discussed the implications of perturbation growth in modified cosmology, numerical simulations of inflationary dynamics, and the study of inflation in the context of non-metric gravity f ( Q, C ) . The choice of f ( Q, C) as the background gravitational theory is motivated by its ability to incorporate non-metricity, its potential to address conceptual difficulties in quantizing gravity and its relevance to cosmology and late-time acceleration of the universe. Additionally, we mention the importance of accurately estimating cosmological parameters from observational data. Overall, we studied the relationship between cosmological inflation and slow-roll parameters, contributing to our understanding of the dynamics and implications of inflation in the early universe according to the modified gravity model f(Q, C ) .

关键词： Inflation Modified gravity f(Q, C) Slow-roll parameters

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Synthesis of new DFNS/ZnTiO3 nanoparticles as a nanocatalyst for the reaction of quinazoline-2, 4(1H, 3H)-dione with CO2

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SCIENTIFIC REPORTS 2025年第1期15卷 1-14页

作者： Amarloo, Fatemeh Zhiani, Rahele Motavalizadehkakhky, Alireza Hosseiny, Malihesadat Islamic Azad Univ Dept Chem Neyshabur Branch Neyshabur Iran

The conversion of CO2 into valuable materials through multicomponent reactions in the presence of nanocatalysts with high surface area and suitable efficiency has garnered significant attention. Herein, this study is focused on the synthesis and catalytic activity of DFNS-supported zinc titanate nanoparticles for the conversion of CO2 into quinazoline-2,4(1H,3H)-dione derivatives. ZnTiO3 was prepared by a sol-gel process, presenting a novel dandelion-like morphology that allows a significant increase in the surface area and catalytic activity. Detailed characterizations such as EDX for elemental composition, XRD for crystallinity, TEM and SEM for morphology, TGA for thermal stability, and FT-IR for bonding characteristics confirmed the excellent integration of ZnTiO3 into the DFNS. Under optimized conditions, our catalytic protocol achieved a maximum yield of 92% at 70 degrees C over 3 h in DMF solvent. Systematic optimization of reaction parameters such as solvent type and nanocatalyst loading showed the remarkable efficiency of this nanocatalyst under mild conditions, hence proving to be a strong alternative in the practices of green synthesis. Further tests for heterogeneity confirmed the effective operation of DFNS/ZnTiO3 as an enduring heterogeneous nanocatalyst, recyclability tests showing an 87% efficiency retention after ten cycles. These findings confirm the economic and ecological viability of the nanocatalyst;hence, DFNS/ZnTiO3 represents a versatile platform toward the advancement of CO2 conversion technologies into valued chemical precursors.

关键词： Quinazoline Nanoparticles Nanocatalyst CO2

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The use of dendritic fibrous nano-titanium to enhance the initial characteristics and durability of lightweight concrete

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SCIENTIFIC REPORTS 2025年第1期15卷 1-14页

作者： Javan, Hossein Honarbakhsh, Amin Movahedifar, Seyed Mojtaba Nobahari, Mehdi Zhiani, Rahele Islamic Azad Univ Dept Civil Engn Neyshabur Branch Neyshabur Iran Islamic Azad Univ New Mat Technol & Proc Res Ctr Dept Civil Engn Neyshabur Branch Neyshabur Iran Islamic Azad Univ Adv Res Ctr Chem Biochem & Nanomat Neyshabur Branch Neyshabur Iran Islamic Azad Univ Dept Chem Neyshabur Branch Neyshabur Iran

The utilization of nanoparticles in concrete has been propelled by their advantageous attributes, such as their fine particle size and remarkable reactivity. To enhance these properties, various nanoparticles can be integrated into the lightweight concrete matrix. We introduce a novel technique to produce TiO2 structures resembling dandelions, featuring interfaces between anatase and TiO2 phases as well as a distinct outer layer. This approach utilizes a deep eutectic solvent-tuning method that is both user- and environmentally friendly. The formation of this remarkable external covering is attributed to the hierarchical arrangement of two-dimensional ultrathin nanosheets with mesopores in a three-dimensional configuration. The primary focus of this study is the utilization of DFNT, a nanoparticle possessing a three-dimensional structure, within the matrix of lightweight concrete. To conduct this study, concrete cases with congestion of 1000 kg/m3 were fabricated and subjected to testing. We sought to evaluate the effect of different weight ratio proportions of DFNT on the enduring characteristics of lightweight concrete, such as the contraction caused by drying, the degree of openness, the capacity to absorb water, and the speed at which ultrasonic waves travel. The inclusion of DFNT induces a transformation in the microstructural composition of lightweight concrete, shifting it from a loose needle-like structure to a more compact and cohesive microstructure characteristic of cementitious composites. Furthermore, DFNT enhances the lightweight concrete matrix by occupying the empty spaces, tiny fractures, and gaps present within it.

关键词： Nanoparticles Heterogeneous particles Lightweight concrete Shrinkage Porosity

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Enhanced adsorptive removal of methylene blue using ternary nanometal oxides in an aqueous solution

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BIOMASS CONVERSION AND BIOREFINERY 2025年第1期15卷 517-529页

作者： Pourramezan, Elyas Omidvar, Maryam Motavalizadehkakhky, Alireza Zhiani, Rahele Darzi, Hamid Heydarzadeh Islamic Azad Univ Neyshabur Branch Dept Chem Engn Neyshabur Iran Islamic Azad Univ Neyshabur Branch Adv Res Ctr Chem Biochem & Nanomat Neyshabur Iran Islamic Azad Univ Quchan Branch Dept Chem Engn Quchan Iran Islamic Azad Univ Neyshabur Branch Dept Chem Neyshabur Iran Islamic Azad Univ Neyshabur Branch New Mat Technol & Proc Res Ctr Neyshabur Iran Hakim Sabzevari Univ Sch Petr & Petrochem Engn Sabzevar Khorasan Razavi Iran

This study aims to quickly and easily produce three ternary nanometal oxides for the adsorption of methylene blue from an aqueous solution. Trimetallic oxides were synthesized using the Al-Fe binary metal oxide and precursors of copper, cobalt, and nickel. The metal oxides were investigated using the following techniques: X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET), and inductively coupled plasma-optical emission spectrometry (ICP-OES). XRD analysis effectively demonstrated well-dispersed nanoparticles with diameters under 20 nm. Compared to other samples, Ni-Al-Fe metal oxide samples have smaller crystal sizes and greater surface areas (239 m(2)/g). The nanometal oxides showed porous structure with pore volume of 0.08-0.15 cm(3)/g and pore diameter of 6-15 nm. The pH of the zero point of charge ( pHzpc) of 7.70, 7.34, and 7.70 were found for nanometal oxides. The adsorption capacity of adsorbents is determined by the order in which they adsorb metal precursors: Ni > Co > Cu. The efficacy of removing methylene blue increased with higher adsorption temperatures (between 27 and 57 degrees C), solution pH, initial dye concentration, nanometal oxide dosage, and contact duration. The adsorption equilibrium data were found to be in good agreement with the Langmuir model compared to the Freundlich model. The maximum adsorption capacities for Ni-Al-Fe, Co-Al-Fe, and Cu-Al-Fe were found to be 161, 94, and 19 mg/g, respectively. The pseudo-second-order kinetic model well predicted the kinetic behavior of methylene blue adsorption on metal oxides.

关键词： Methylene blue removal Trimetallic oxide Adsorption Co-precipitation method Kinetics Isotherms

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Zein-sodium caseinate-diosmin nanoparticles as a promising anti-cancer agent with targeted efficacy against A2780 cell line

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SCIENTIFIC REPORTS 2025年第1期15卷 1-13页

作者： Faezi, Mahmoud Motavalizadehkakhky, Alireza Tabrizi, Masoud Homayouni Dolatabadi, Samaneh Es-haghi, Ali Islamic Azad Univ Dept Biochem Neyshabur Branch Neyshabur Iran Islamic Azad Univ Dept Chem Neyshabur Branch Neyshabur Iran Islamic Azad Univ Dept Biol Mashhad Branch Mashhad Iran Islamic Azad Univ Dept Microbiol Neyshabur Branch Neyshabur Iran

This research investigated the potential of zein-sodium caseinate-diosmin nanoparticles (ZCD-NPs) as an anti-cancer agent against the A2780 cell line. Dynamic light scattering (DLS) analysis showed that ZCD-NPs have an average size of 265.30 nm with a polydispersity index of 0.21, indicating good uniformity suitable for pharmaceutical applications. Fourier transform infrared spectroscopy (FTIR) confirmed the successful incorporation of diosmin into the NPs and highlighted the interactions between the components. Field emission scanning electron microscopy (FESEM) images showed spherical NPs with smooth surfaces, suggesting stability and high production quality. Encapsulation efficiency was remarkably high, at 93.45%. Cytotoxicity assays showed a dose-dependent effect of ZCD-NPs, with A2780 cells showing significant sensitivity compared to normal HDF cells, indicating selective targeting of cancer cells. Flow cytometry analysis confirmed that ZCD-NPs induced apoptosis and necrosis in A2780 cells, as evidenced by increased expression of apoptotic genes such as p53 and caspases 8 and 9. In addition, ZCD-NPs exhibited potent antioxidant activity, effectively scavenging free radicals. These results suggest that ZCD-NPs have promising properties for targeted cancer therapy and antioxidant applications, which warrant further exploration in clinical settings.

关键词： Diosmin Zein-caseinate Sodium caseinate A2780 Nanoparticles

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Effects of torsion coupling on fermions and Bounce dynamics of the universe

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NUCLEAR PHYSICS B 2025年 1014卷

作者： Sadatian, S. Davood Hosseini, S. Mohamad Reza Univ Neyshabur Fac Basic Sci Dept Phys POB *** Neyshabur Iran

The influence of torsion coupling with fermions on Bounce dynamics is an intriguing area of research at the intersection of gravity, particle physics, and cosmology. While definitive answers are still elusive, there are promising theoretical indications and ongoing investigations to explore this connection. Theoretically, torsion coupling with fermions could introduce new terms into the equations governing the Bounce, potentially influencing its characteristics (i.e. a singular bouncing cosmology can be attained through the introduction of a fermion field with BardeenCooper-Schrieffer (BCS) condensation at high energy scales). In this regard, we discuss the role of fermion fields in cosmology, particularly focusing on the bouncing model as a solution to the singularity problem of the Big Bang. We highlight how the coupling between spin and torsion in the Einstein-Cartan theory of gravity can prevent gravitational singularities, leading to a nonsingular bounce instead of a Big Bang. We emphasize the implications of this model for understanding the early universe and the fundamental interactions that shaped its evolution. This study also references some works that have contributed to the understanding of fermionic interactions and their cosmological significance, suggesting new subject for future research in this area.

关键词： Bounce dynamics Modified gravity Torsion coupling

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New Roles of Artemisinins in Atherosclerosis Progression

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PHYTOTHERAPY RESEARCH 2025年第4期39卷 1847-1857页

作者： Majidiani, Hamidreza Musavi, Maryam Momtazi-Borojeni, Amir Abbas Neyshabur Univ Med Sci Fac Med Dept Basic Med Sci Neyshabur Iran Neyshabur Univ Med Sci Sch Med Dept Med Biotechnol Fac Med Neyshabur Iran

Artemisinin is a natural compound derived from the Chinese plant Artemisia annua, which was officially approved by the FDA for its antimalarial effects. In recent years, a growing body of studies has shown the novel function of artemisinin in atherosclerosis therapy. In vivo studies have shown that artemisinin can inhibit the progression of atherosclerosis plaque. In the present review, the evidence showing the inhibitory effects of artemisinin on the progression of atherosclerosis plaque and its underlying mechanisms is discussed. Mechanistically, artemisinin and its derivatives act by modulating various atherosclerosis-mediating risk factors, including hyperlipidemia, inflammation, oxidative stress, and malfunctioning vascular smooth muscle cells (VSMCs). Notably, artesunate, but not artemisinin, can attenuate the plasma levels of TG, TC, VLDL-C, and LDL-c, along with a substantial decline in arterial lipid deposition through enhancing the LDPL activity via inducing the KFL2/NRF2/TCF7L2 axis. Artemisinin was found to ameliorate the atherosclerosis plaque inflammation by reducing monocyte adhesion and subsequent transmigration to the intima, via inhibiting the expression of ICAM-1 and VCAM-1, diminishing NLRP3 inflammasome activation, and reducing the expression of inflammatory factors such as IL-1 beta, IL-18, TNF-alpha, MCP-1, and TGF-beta 1 mechanistically and mainly via suppressing the by NF-kappa B activity. Artemisinin could exert antioxidant effects through activating the PI3K/Akt/eNOS signaling pathway and suppressing the ROS-mediated NF-kappa B signal pathway. Artemisinin could also improve the VSMC function in the atherosclerosis plaque. These findings can suggest artemisinin as a new therapeutic agent for treating atherosclerosis;however, future clinical trials are warranted to validate its therapeutic efficiency in patients with atherosclerosis.

关键词： artemisinin atherosclerosis hyperlipidemia malaria

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The effect of magnesium supplementation on serum concentration of lipid profile: an updated systematic review and dose-response meta-analysis on randomized controlled trials

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NUTRITION JOURNAL 2025年第1期24卷 1-21页

作者： Hariri, Mitra Sohrabi, Masoudreza Gholami, Ali Neyshabur Univ Med Sci Noncommunicable Dis Res Ctr Neyshabur Iran Neyshabur Univ Med Sci Hlth Ageing Res Ctr Neyshabur Iran Univ Med Sci Firoozgar Hosp Gastrointestinal & Liver Dis Res Ctr GILDRC Tehran Iran Neyshabur Univ Med Sci Sch Publ Hlth Dept Epidemiol & Biostat Neyshabur Iran

Background Some evidence suggests magnesium might reduce serum levels of lipid profile. Due to the significance of this matter on hand, we centralized our aim to conduct a systematic review and meta-analysis to interrogate the effect of magnesium supplementation on serum levels of total cholesterol (TC), triglyceride (TG), low density lipoprotein cholesterol (LDL-C), and high density lipoprotein cholesterol (HDL-C) in the general population aged >= 18 years. Methods In line with conducting this study first, relevant articles were found through searching databases, including five databases: Cochrane Library, ***, ISI Web of Science, Scopus, and PubMed until January 2024. Following fulfilling the first aim, their mean differences and standard deviations were calculated to conduct the meta-analysis. Ultimately, an assessment of the statistical heterogeneity of intervention effects was performed using I-squared statistics and Cochran's Q test. Results Regarding serum levels of TC, TG, LDL-C, and HDL-C, twenty-one, twenty-three, twenty, and twenty-five studies were included in the meta-analysis. The pooled estimates showed no significant differences in serum levels of TC, TG, and LDL-C between the magnesium group and comparison group (weighted mean difference (WMD) = 0.34 mg/dl, 95% confidence interval (CI): -1.75 to 2.43, P = 0.749, I-2 = 99.1%;WMD=-2.06 mg/dl, 95% CI: -6.35 to 2.23, P = 0.346, I-2 = 99.1;WMD = 1.71 mg/dl, 95% CI: -0.81 to 4.24, P = 0.183, I-2 = 99.4, respectively). However, magnesium significantly increased HDL-C (WMD = 1.21 mg/dl, 95% CI: 0.58 to 1.85, P < 0.001, I2 = 99.5). Conclusion In conclusion, our study showed that magnesium significantly increased HDL-C levels. However, due to high heterogeneity, we must note that more research is needed to make robust recommendations regarding magnesium supplementation in clinical practice. Registry numberThis study was registered in PROSPERO under the protocol number CRD42024505142.

关键词： Magnesium Lipid profile Systematic review Meta-analysis

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