jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Tamer Mohamed Mahmoud | Mohamed Mahmoud Abdelfatah | Mahmoud Mohamed Omar | Omiya Ali Hasan | Saad M. Wali | Mohamed El-Mofty | Mohamed G. Ewees | Amel Elsayed Salem | Tarek I Abd El-Galil | Dina Mohamed Mahmoud
Source: Pharmaceutics (article, 2025-01-07)
Field: Materials Science — Biomaterials

Enhancing the Therapeutic Effect and Bioavailability of Irradiated Silver Nanoparticle-Capped Chitosan-Coated Rosuvastatin Calcium Nanovesicles for the Treatment of Liver Cancer Liver cancer is a prevalent form of carcinoma worldwide. A novel chitosan-coated optimized formulation capped with irradiated silver nanoparticles (INops) was fabricated to boost the anti-malignant impact of rosuvastatin calcium (RC). Using a 2<sup>3</sup>-factorial design, eight formulations were produced using the solvent evaporation process. The formulations were characterized in vitro to identify the optimal formulation (Nop). The FTIR spectra showed that the fingerprint region is not superimposed with that of the drug; DSC thermal analysis depicted a negligible peak shift; and XRPD diffractograms revealed the disappearance of the typical drug peaks. Nop had an entrapment efficiency percent (EE%) of 86.2%, a polydispersity index (PDI) of 0.254, a zeta potential (ZP) of -35.3 mV, and a drug release after 12 h (Q12) of 55.6%. The chitosan-coated optimized formulation (CS.Nop) showed significant mucoadhesive strength that was 1.7-fold greater than Nop. Physical stability analysis of CS.Nop revealed negligible alterations in VS, ZP, PDI, and drug retention (DR) at 4 °C. The irradiated chitosan-coated optimized formulation capped with silver nanoparticles (INops) revealed the highest inhibition effect on carcinoma cells (97.12%) compared to the chitosan-coated optimized formulation (CS.Nop; 81.64) and chitosan-coated optimized formulation capped with silver nanoparticles (CS.Nop.AgNPs; 92.41). The bioavailability of CS-Nop was 4.95-fold greater than RC, with a residence time of about twice the free drug. CS.Nop has displayed a strong in vitro-in vivo correlation with R<sup>2</sup> 0.9887. The authors could propose that novel INop could serve as an advanced platform to improve oral bioavailability and enhance hepatic carcinoma recovery. Bioavailability ; Chitosan ; Rosuvastatin ; Silver nanoparticle ; Rosuvastatin Calcium ; Calcium ; Chemistry ; Nanoparticle ; Pharmacology ; Liver cancer ; Cancer ; Nanotechnology ; Materials science ; Medicine ; Biochemistry ; Internal medicine Nanoparticle-Based Drug Delivery ; RNA Interference and Gene Delivery ; Curcumin's Biomedical Applications
Authors: Jingyi Wang | Luz Karimé Gil-Herrera | Özge Akbulut | Ahu Gümrah Dumanlı
Source: RSC Advances (article, 2025-01-01)
Field: Materials Science — Materials Chemistry

Investigating the fluorescence in C-dots immobilised on alginate hydrogels-a study on diffusion kinetics and adsorption mechanisms Immobilisation of fluorescent carbon dots (C-dots) in a hydrogel matrix, such as alginates, prevents fluorescence quenching in bioimaging and biosensing applications. However, critical parameters influencing the fluorescence, including the diffusion kinetics of C-dots and their distribution within the hydrogel matrix, remain unexplored. Herein, we investigated two distinct methods for immobilising C-dots within alginate hydrogel beads: (i) adsorption and (ii) premixing the C-dots prior to hydrogel cross-linking. Our batch adsorption experiments and kinetic model fittings revealed rapid, concentration-dependent diffusion from the external solution to the beads, along with their binding to surface active sites. The rate-determining step was the diffusion into interconnecting layers within the matrix, which impacts both diffusion rates and the overall distribution of C-dots within the beads. The fluorescence signal in the hydrogel matrix from the adsorption method exhibited limited penetration depth compared to the premixed method, which showed a more uniform distribution. We demonstrated that C-dots are well-immobilised and interact effectively with the hydrogel matrix, exhibiting stable fluorescence intensities and improved structural integrity. Our findings provide valuable insights into the interaction and diffusion of C-dots in hydrogel systems and will help advance research on the fluorescence properties of C-dots for bioimaging and bio-sensing applications. Kinetics ; Self-healing hydrogels ; Adsorption ; Diffusion ; Fluorescence ; Chemistry ; Chemical engineering ; Nanotechnology ; Materials science ; Polymer chemistry ; Organic chemistry ; Thermodynamics ; Engineering ; Physics ; Optics Carbon and Quantum Dots Applications ; Quantum Dots Synthesis And Properties ; Luminescence and Fluorescent Materials
Authors: Ceyda Duyar | Afranur Pendar | Yunus Zorlu | Derya Davarcı
Source: Journal of Inorganic and Organometallic Polymers and Materials (article, 2025-04-26)
Field: Chemistry — Inorganic Chemistry

Selective Adsorption of Anionic Dyes Using New Three-Dimension Ag(I) Coordination Polymer Abstract We are reporting herein a new ligand 2,2,4,4,6,6-hexakis(2-ethyl-1H-imidazol-1-yl)-cyclotriphosphazene ( EtIm-Cp ) and its Ag(I) coordination polymer ( 1 ). EtIm-Cp was characterised by standard spectroscopic techniques, 1 H NMR, 31 P NMR, and mass spectrometric analysis. The compounds were characterized using single crystal X-ray diffraction. Ligand, EtIm-Cp , in complex 1 form a 3D coordination polymer by joining three Ag(I) ions, resulting in a κ 3 N coordination mode. Topological analysis confirms that complex 1 shows a three-connected unimodal net with the point symbol of {10 3 }. In order to adsorb three cationic and three anionic organic dyes in aqueous environments, coordination polymers were used. Experiments demonstrate that 1 shows no adsorption behavior towards cationic dyes methylene blue (MB) Rhodamine B (RhB), and Astrazon blue (AB) but it does remove the anionic methyl orange (MO), tartrazine (E102), and sunset yellow (SY) from water. Furthermore, complex 1 completely removed selectively anionic dyes from the anionic/cationic dye mixture. Surface charge values ​​obtained from zeta potential measurements confirm that anionic dyes are adsorbed onto the surface of the complex 1 . According to PXRD analysis, there was no deterioration in the chemical structure of the compound after adsorption. Graphical abstract Adsorption ; Coordination polymer ; Polymer ; Dimension (graph theory) ; Materials science ; Polymer chemistry ; Coordination complex ; Chemistry ; Chemical engineering ; Inorganic chemistry ; Organic chemistry ; Metal ; Mathematics Metal-Organic Frameworks: Synthesis and Applications ; Synthesis and Characterization of Heterocyclic Compounds ; Molecular Sensors and Ion Detection
Authors: Tomás Nicolás‐García | Natalia Martín Sabanés | Rebeca Bocanegra | R. Dean Astumian | Emilio M. Pérez | Borja Ibarra
Source: Chem (article, 2025-02-11)
Field: Chemistry — Organic Chemistry

Transition-path times of individual molecular shuttles under mechanical equilibrium show symmetry Symmetry (geometry) ; Path (computing) ; Transition (genetics) ; Statistical physics ; Physics ; Theoretical physics ; Mathematics ; Computer science ; Biology ; Geometry ; Genetics Supramolecular Chemistry and Complexes ; Hemoglobin structure and function ; ATP Synthase and ATPases Research
Authors: Irfan Ijaz | Aysha Bukhari | Ammara Nazir | Ezaz Gilani | Hina Zain | Attia Shaheen | Mohammed Rafi Shaik | Mujeeb Khan | Jilani P. Shaik
Source: RSC Advances (article, 2025-01-01)
Field: Materials Science — Materials Chemistry

Simultaneous adsorption of sulfamethoxazole and neodymium from wastewater by a MXene-, α-aminophosphonate-, and sulfated fucan-based ternary composite based on anion-synergistic interactions The simultaneous removal of antibiotics and heavy metal ions is of utmost importance because of their hazardous effects on the environment and humans. For the adsorption of sulfamethoxazole (SMX) and neodymium (Nd<sup>3+</sup>) in mono- and binary contaminant systems (SMX-Nd<sup>3+</sup> and Nd<sup>3+</sup>-SMX), a novel composite was designed using sulfated fucan (FuS), MXenes, and α-aminophosphonates (AMPs) in this study. As far as we know, the concurrent adsorption of SMX and Nd<sup>3+</sup> employing materials made of MXenes, FuS, and AMPs with this specific structure has not yet been reported. At 318 K, the FuS@MXene@AMP adsorbent demonstrated excellent adsorption capacities of 448.91 and 255.78 mg g<sup>-1</sup> for SMX and Nd<sup>3+</sup>, respectively. The pseudo-first-order (PSO) kinetic model was the most appropriate for depicting the adsorption of SMX and Nd<sup>3+</sup> among all the tested kinetic models. The adsorption of SMX and Nd<sup>3+</sup> is better described by the Langmuir isotherm model with a higher value of adsorption capacity and <i>R</i> <sup>2</sup>. The simultaneous presence of Nd<sup>3+</sup> and SMX promoted mutual sorption between the antibiotic and metal ions in the binary systems. The results of FTIR and XPS studies indicated that the removal mechanisms were primarily due to hydrogen bonding, complexation, electrostatic interaction, and π-π interaction. Chemistry ; Ternary operation ; Adsorption ; Composite number ; Neodymium ; Nuclear chemistry ; Wastewater ; Sulfamethoxazole ; Organic chemistry ; Materials science ; Biochemistry ; Antibiotics ; Composite material ; Waste management MXene and MAX Phase Materials ; Pharmacological Effects and Toxicity Studies ; Chemical Synthesis and Characterization
Authors: Salah H. Elhory | Mohamed R. Elamin | Tarig G. Ibrahim | Mutaz Salih | Faisal K. Algethami | Mohammed Sulieman Ali Eltoum | Babiker Y. Abdulkhair
Source: Inorganics (article, 2025-08-26)
Field: Chemistry — Inorganic Chemistry

A γ-Al2O3 and MgO/MgAl2O4 Fabricated via a Facile Pathway as Excellent Dye Eliminators from Water This study has successfully developed a practical and straightforward approach for synthesizing nanocomposites with excellent dye removal potential. The SEM inspection of γ-Al2O3 (γ-Al) and MgO/MgAl2O4 (Mg/MgAl) nanocomposite showed a mean size of 59.0 and 46.4 nm, respectively, while the TEM results show particles with an average size of 26.63 and 13.4 nm, respectively. The surface area of γ-Al and Mg/MgAl was 50.0 and 69.5 m2 g−1, respectively. The study of adsorbing indigo carmine (IC) sorption onto γ-Al and Mg/MgAl presented sorption capacities of 41.6 and 55.9 mg g−1, respectively, and both adsorbents attained equilibrium at 90 min. The highest IC sorption onto Mg/MgAl took place at pH 6.0. It is worth mentioning that raising the IC solution’s temperature from 20 °C to 50 °C increased the qt to 268 mg g−1. The IC sorption onto γ-Al and Mg/MgAl agreed with the pseudo-second-order model, and the liquid-film diffusion controlled the IC sorption. The Mg/MgAl showed an average removal of 98.2% when tested for removing six dyes at 10 mg L−1, particularly malachite green, methylene blue, fast green, methyl orange, rhodamine B, and basic fuchsin, and the removal efficiency was 93.3% when their concentration increased to 20 mg L−1. The Mg/MgAl nanocomposite performed exceptionally well in natural water samples (seawater and groundwater), indicating its potential applicability in managing water contamination. Materials science ; Chemical engineering ; Engineering Pigment Synthesis and Properties ; Advanced Photocatalysis Techniques ; Adsorption and biosorption for pollutant removal
Authors: Zhong Zhou Yi | Lifeng Chen | Shi-Chang Zhang | Juan Liu | Ziliang Ye | Mohammed F. Hamza | Yuezhou Wei | Shunyan Ning
Source: Metals (article, 2025-09-23)
Field: Chemistry — Inorganic Chemistry

Preparation of a Porous Tri-n-decylamine Modified Adsorbent for the Efficient Removal of Uranium and Iron from Rare Earth The presence of impurities Fe and trace radioactive U in rare earth elements (REEs) may lead to a significant decline in the performance of high-purity rare earth products. For deep removal from REEs in a green and efficient way, an amine-functionalized silica-based adsorbent, TNDA/SiO2-P, was prepared by a simple vacuum impregnation method, which had a high organic loading rate of 31.2 wt.%. The experimental results showed that it exhibited good adsorption selectivity for uranium and iron, with separation factors SFU/REE = 20147 and SFFe/REE = 88128 in 5 M HCl. The adsorption kinetics was fast, with equilibrium obtained in 120 min. The 0.1 M HCl can desorb U and Fe efficiently. The deep removal of U and Fe from REEs including Sc can be achieved through chromatographic column separation with high enrichment. FT-IR, XPS and DFT calculations mutually confirmed that protonated TNDA/SiO2-P exhibited a selective mechanism for uranium and iron in complex anion species in the hydrochloric acid system. This demonstrates its potential for efficiently removing trace impurities U and Fe from REEs. Uranium ; Adsorption ; Impurity ; Rare earth ; Hydrochloric acid ; Desorption ; Protonation ; Selectivity Radioactive element chemistry and processing ; Extraction and Separation Processes ; Chemical Synthesis and Characterization
Authors: Asmaa Y. Wahman | Kawthar Abd El‐Hameed | Ahmad Abo Markeb | Waleed A. El‐Said | Nagwa Abo El‐Maali
Source: RSC Advances (article, 2025-01-01)
Field: Chemistry — Electrochemistry

Validation and optimization of a Prussian blue nanoparticle-based method for efficient detection and removal of lead ions in environmental samples Lead (Pb<sup>2+</sup>) poisoning in water is now a more serious environmental concern than any other, due to its potential toxicity and accumulation in the human body. The Prussian blue nanoparticles (PBNPs) effectively removed organic and inorganic pollutants from aqueous solution. This study comprehensively investigates the adsorption properties of PBNPs for Pb<sup>2+</sup> removal, optimizing experimental conditions through various analytical techniques. Key validation parameters-linearity, precision, accuracy, the limit of detection (LOD), the limit of quantification (LOQ), and the method detection limit (MDL)-were assessed. We investigate a comprehensive study focused on the adsorption properties of Prussian blue nanoparticles (PBNPs) for Pb<sup>2+</sup> removal from aqueous solutions. The adsorption process was most effective at pH 7.5, achieving an adsorption capacity of 190 mg g<sup>-1</sup>. Kinetic analysis revealed that the adsorption follows a pseudo-second-order model with a chemisorption mechanism, while isothermal studies confirmed monolayer adsorption consistent with the Langmuir model. Thermodynamic analysis indicated that the process is spontaneous and endothermic. The Pb<sup>2+</sup> concentration was precisely measured using graphite furnace atomic absorption spectroscopy (GFAAS) and flame atomic absorption spectroscopy (FAAS), with strong linearity (<i>R</i> <sup>2</sup> = 0.997), LOQ = 0.179 mg L<sup>-1</sup>, and LOD = 0.056 mg L<sup>-1</sup> for FAAS. These findings show that the PBNPs have a significant potential for effective Pb<sup>2+</sup> removal and are reusable, making them suitable for eco-friendly remediation applications. Validation parameters confirmed that trace Pb<sup>2+</sup> levels in environmental samples were accurately and precisely detected. The study emphasizes the high absorption capacity of PBNPs for lead, which was evaluated using different experimental approaches and methodologies. Prussian blue ; Lead (geology) ; Lead poisoning ; Nanoparticle ; Environmental chemistry ; Environmental science ; Chemistry ; Nanotechnology ; Biochemical engineering ; Materials science ; Geology ; Engineering ; Metallurgy Electrochemical Analysis and Applications ; Analytical chemistry methods development ; Molecular Sensors and Ion Detection
Authors: Ümran Hiçsönmez | Sema Erenturk | Aysun Uğur Görgün | Mahmoud A. A. Aslani
Source: Journal of Radioanalytical and Nuclear Chemistry (article, 2025-03-29)
Field: Chemistry — Inorganic Chemistry

Use of zeolite in reducing environmental risk of polonium: kinetic models Abstract A study was conducted to understand the mechanism of adsorption kinetic that is effective in removal of 209 Po by clinoptilolite, a natural zeolite, from aquatic environments. Studies of the adsorption kinetics of 209 Po were carried out by interacting zeolite with 209 Po at different time intervals. Experimental polonium adsorption data obtained in our previous article were applied to some known kinetic models such as pseudo-first order, pseudo-second order, Elowich, Bangham, Homogeneous particle diffusion and Shell step models. The data obtained from the models revealed that the rate-limiting step is more compatible with the pseudo-second order model, which is based on the assumption that chemical sorption. According to the results obtained, the calculated the amount of 209 Po adsorbed at equilibrium (q e ) and the equilibrium rate constant of pseudo-second-order sorption (k 2 ) were found to be 0.3302 ng g −1 , − 4.4 × 10 –5 ng g −1 min −1 , respectively. Polonium ; Zeolite ; Environmental science ; Chemistry ; Kinetic energy ; Radiochemistry ; Environmental chemistry ; Catalysis ; Physics ; Biochemistry Radioactive element chemistry and processing ; Radioactive contamination and transfer ; Chemical Synthesis and Characterization
Authors: Raquel Villanova-Estors | Gracia López‐Carballo | Carol López de Dicastillo | Adriana Corrêa-Guimarães | Rafael Gavara | Pilar Hernández‐Muñoz
Source: Food Packaging and Shelf Life (article, 2025-07-01)
Field: Materials Science — Biomaterials

Extending the shelf life of fresh-cut vegetables with sustainable packaging: A case study on rocket leaves The demand for minimally processed vegetable products is rising, yet their high perishability limits shelf life to approximately seven days. Simultaneously there is a growing shift towards replacing fossil-based packaging materials with sustainable, environmentally friendly alternatives. The study aims to compare the behaviour of rocket leaves packaged in three different types of bags: oil-based commercial polypropylene (PP), polylactic acid (PLA), and cellophane (CFN), the latter two being compostable materials. The research focused on key factors such as barrier properties and the respiration of rocket leaves. Results revealed that gas permeability, permselectivity and UV barrier were found to be higher in CFN, followed by PLA and PP. On the other hand, PLA and CFN showed higher water permeability values than PP In terms of shelf life, after 10 days of storage at 4°C, rocket leaves packaged in PLA and CFN maintained atmospheric composition and microbiological stability comparable to those stored in PP. Sensory analysis further revealed a preference for rocket leaves packaged in PLA bags. Therefore, PLA emerges as a viable compostable alternative for packaging rocket leaves without compromising their shelf life compared to conventional fossil-based options. • Polylactic acid and cellophane present greater gas barrier properties than PP but lower water barrier. • Higher barrier to gases results in optimal equilibrium modified atmosphere for fresh produce. • Materials with low water barrier reduces water accumulation from vegetable transpiration. • PLA bags provided improved stability for rocket leaves based on sensory and microbial analysis. Shelf life ; Rocket (weapon) ; Horticulture ; Environmental science ; Engineering ; Aeronautics ; Biology ; Mechanical engineering Nanocomposite Films for Food Packaging ; Consumer Packaging Perceptions and Trends ; Food Waste Reduction and Sustainability
Authors: Anatay Zarehshi | M. A. Aghajani
Source: Discover Environment (article, 2025-11-19)
Field: Materials Science — Polymers and Plastics

A review of plant fibers and their sorption property for wastewater treatment and water filter production Abstract While the industrial revolution has promoted the quality of human life, today we have been affected by its environmental consequences. Industrial wastewater is one of the major sources of pollution that should be decontaminated before entering into the nature or being reused. Since most conventional filters are oil-based and non-renewable, this review focuses on the sustainable filtration process. Plant fibers can be used to produce water filters by which individuals can perform a healthy water filtration. Among such plants, milkweed, kenaf, flax, coir, Luffa, Agave, jute, etc. can be noted. These biodegradable fibers can be the ideal replacement for man-made, synthetic, and petroleum-based fibers. Lignocellulosic fibers are able to decontaminate the polluted water through the sorption of the contaminants. In this paper, we review the history of natural fibers' applications in wastewater treatment and the role of each plant in water purification is described. We also examine relevant patents to demonstrate the industrial applicability of natural fibers. By using sustainable methods, we hope to achieve the harmony with the environment. Wastewater ; Water treatment ; Sewage treatment ; Filtration (mathematics) ; Sorption ; Industrial wastewater treatment ; Pollution ; Production (economics) Natural Fiber Reinforced Composites ; Advanced Cellulose Research Studies ; Electrospun Nanofibers in Biomedical Applications
Authors: Shardool Kulkarni | Francesc Tebar | Carles Rentero | Min Zhao | Pablo Sáez
Source: bioRxiv (Cold Spring Harbor Laboratory) (preprint, 2025-01-12)
Field: Materials Science — Materials Chemistry

Competing signaling pathways controls electrotaxis Abstract Understanding how cells migrate following exogenous cues is one of the most fundamental questions for biology, medicine, and bioengineering. Growing evidence shows that electrotaxis, the directed cell migration toward electric potential gradients, represents a precise and programmable method to control cell migration. Most data suggest that the polarization of membrane components and the following downstream signaling are central to electrotaxis. Unfortunately, how these multiple mechanisms coordinate with the motile machinery of the cell to respond to an electric field is still poorly understood. Here, we develop a mechanistic model that explains and recapitulate electrotaxis across different cell types. Using the zebrafish proteome, we identify membrane proteins directly related to migration signaling pathways that polarize anodally and cathodally. Further, we show that simultaneous and asymmetric distribution of charged membrane receptors towards the anode and the cathode establishes multiple cooperative and competing stimuli for downstream signaling pathways. The resulting polarization of signals controls the actomyosin network dynamics, directing the anodal and cathodal migration of the cell. Our theoretical framework rationalizes the physical processes that determine electrotaxis across cell types and provides a physical framework to test multiple electrotactic pathways. These results together show us how to control cell migration to, e.g., enhance, cancel, or switch directed cell migration, which opens up new avenues not only to promote tissue regeneration or arrest tumor progression but also to design better biomimetic-engineered tissue constructs. Biology ; Neuroscience Corrosion Behavior and Inhibition
Authors: José de Jesús Velazquez-Garcia | Susann Frenzke | L. De Los Santos Valladares | C. H. W. Barnes | Christopher Copeman | Jatinder Singh | Satishkumar Kulkarni | Thomas F. Keller | H. Sanchez Cornejo | Dina Huanaco | Maryam Anwary | Rachida Elorche | Lina Maria Asprilla-Herrera | Weronika Łukaszczyk | Nuray Eroglu | Dirk Eifler | Simone Techert
Source: Materials Advances (article, 2025-01-01)
Field: Chemistry — Inorganic Chemistry

Size matters: limitations of the ZIF-8 monolith and its Ni-, Co- and Cu-doped variants for the adsorption of rhodamine B ZIF-8 monoliths, and their Co-, Ni- and Cu-doped variants, are not suitable for water pollutant adsorption due to two key limitations: poor aqueous stability and restricted accessibility of large pollutants to the pores. Adsorption ; Monolith ; Aqueous solution ; Pollutant ; Rhodamine B ; Aqueous medium Metal-Organic Frameworks: Synthesis and Applications