jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Haifa Abdulaziz S. Alhaithloul | Suliman Mohammed Suliman Alghanem | Ibtisam Mohammed Alsudays | Zahid Khorshid Abbas | Siham M. AL-Balawi | Baber Ali | Tabarak Malik | Sadia Javed | Shafaqat Ali | Sezai Erċışlı | Doaa Bahaa Eldin Darwish
Source: BMC Plant Biology (article, 2024-10-19)
Field: Materials Science — Materials Chemistry

Ameliorating arsenic and PVC microplastic stress in barley (Hordeum vulgare L.) using copper oxide nanoparticles: an environmental bioremediation approach The present study investigates the impact of varying concentrations of PVC microplastics (PVC-MPs) - specifically 0 (no PVC-MPs), 2, and 4 mg L<sup>- 1</sup> -alongside different arsenic (As) levels of 0 (no As), 150, and 300 mg kg<sup>- 1</sup> in the soil, with the concurrent application of copper oxide-nanoparticles (CuO-NPs) at 0 (no CuO -NPs), 25 and 50 µg mL<sup>- 1</sup> to barley (Hordeum vulgare L.) plants. This research primarily aims to assess plant growth and biomass, photosynthetic pigments and gas exchange characteristics, oxidative stress indicators, as well as the response of various antioxidants (both enzymatic and non-enzymatic) and their relevant genes expression, proline metabolism, the AsA-GSH cycle, and cellular fractionation within the plants. The findings showed that increased levels of PVC-MPs and As stress in the soil significantly reduced plant growth and biomass, photosynthetic pigments, and gas exchange characteristics. Additionally, PVC-MPs and As stress increased oxidative stress in the roots and shoots, as evidenced by elevated levels of malondialdehyde (MDA), hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), and electrolyte leakage (EL), which in turn stimulated the production of various enzymatic and non-enzymatic antioxidants, gene expression, and sugar content. Furthermore, a notable increase in proline metabolism, the AsA-GSH cycle, and cellular pigmentation was observed. Conversely, the application of CuO-NPs resulted in a substantial improvement in plant growth and biomass, gas exchange characteristics, and the activity of enzymatic and non-enzymatic antioxidants, along with a reduction in oxidative stress. Additionally, CuO-NPs enhanced cellular fractionation while decreasing proline metabolism and the AsA-GSH cycle in H. vulgare plants. These outcomes provide new insights into sustainable agricultural practices and offer significant potential in addressing the critical challenges of heavy metal contamination in agricultural soils. Biology ; Arsenic ; Hordeum vulgare ; Bioremediation ; Copper ; Environmental chemistry ; Environmental stress ; Agronomy ; Botany ; Metallurgy ; Poaceae ; Materials science ; Contamination ; Ecology ; Chemistry Nanoparticles: synthesis and applications ; Heavy metals in environment
Authors: Dávid István Kis | Attila Bata | J. Takács | Eszter Kókai
Source: Nanomaterials (article, 2024-08-25)
Field: Materials Science — Polymers and Plastics

Mechanical Properties of Clay-Reinforced Polyamide 6 Nanocomposite Liner Materials of Type IV Hydrogen Storage Vessels This study focuses on polyamide 6/organo-modified montmorillonite (PA6/OMMT) nanocomposites as potential liner materials, given the growing interest in enhancing the performance of type IV composite overwrapped hydrogen storage pressure vessels. The mechanical properties of PA6/OMMT composites with varying filler concentrations were investigated across a temperature range relevant to hydrogen storage conditions (-40 °C to +85 °C). Liner collapse, a critical issue caused by rapid gas discharge, was analyzed using an Ishikawa diagram to identify external and internal factors. Mechanical testing revealed that higher OMMT content generally increased stiffness, especially at elevated temperatures. The Young's modulus and first yield strength exhibited non-linear temperature dependencies, with 1 wt. per cent OMMT content enhancing yield strength at all tested temperatures. Dynamic mechanical analysis (DMA) indicated that OMMT improves the storage modulus, suggesting effective filler dispersion, but it also reduces the toughness and heat resistance, as evidenced by lower glass transition temperatures. This study underscores the importance of optimizing OMMT content to balance mechanical performance and thermal stability for the practical application of PA6/OMMT nanocomposites in hydrogen storage pressure vessels. Materials science ; Dynamic mechanical analysis ; Montmorillonite ; Composite material ; Nanocomposite ; Polyamide ; Toughness ; Hydrogen storage ; Composite number ; Thermal stability ; Polymer ; Chemical engineering Polymer Nanocomposites and Properties ; High voltage insulation and dielectric phenomena ; Vibration Control and Rheological Fluids
Authors: Ana F. R. Gomes | Emı́lia Sousa | Diana I. S. P. Resende
Source: ACS Omega (article, 2024-06-11)
Field: Chemistry — Analytical Chemistry

A Practical Toolkit for the Detection, Isolation, Quantification, and Characterization of Siderophores and Metallophores in Microorganisms Siderophores are well-recognized low-molecular-weight compounds produced by numerous microorganisms to acquire iron from the surrounding environments. These secondary metabolites can form complexes with other metals besides iron, forming soluble metallophores; because of that, they are widely investigated in either the medicinal or environmental field. One of the bottlenecks of siderophore research is related to the identification of new siderophores from microbial sources. Herein we have compiled a comprehensive range of standard and updated methodologies that have been developed over the past few years to provide a comprehensive toolbox in this area to current researchers. Isolation (microbiology) ; Siderophore ; Microorganism ; Characterization (materials science) ; Microbiology ; Computer science ; Computational biology ; Bacteria ; Biology ; Nanotechnology ; Materials science Analytical chemistry methods development ; Chromium effects and bioremediation ; Pesticide and Herbicide Environmental Studies
Authors: Tien T. Dang | Lam Duc Vu Nguyen | Duc Tien Dau | Quang Nguyen | Thao Nhien Le | Thi Quynh Ngoc Nguyen
Source: Royal Society Open Science (article, 2024-12-01)
Field: Materials Science — Biomaterials

Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packaging Cashew nut testa, a by-product of cashew nut processing, is abundant in phenolic compounds and exhibits strong antioxidant properties, making it a potential additive for enhancing the antioxidant properties of biodegradable films used in food packaging. This study explores the fabrication of biodegradable chitosan/polyvinyl alcohol films incorporating varying concentrations of cashew nut testa extract (CNTE; 0, 1, 2 and 3% v/v) and evaluates their physical, structural, mechanical, optical and antioxidant properties. The results demonstrate that increasing extract concentration generally increased the thickness, tensile strength, Young's modulus, thermal stability and antioxidant capacity of the films, while reducing the moisture content, swelling degree, elongation at break, and light transmittance. Specifically, the film with 3% extract showed approximately 11% lower moisture content and 31% lower swelling degree compared with the plain film. It also displayed the highest tensile strength and Young's modulus at 28.63 and 147.35 MPa, respectively. Microstructural analysis revealed that the incorporation of CNTE resulted in a smoother and slightly denser film structure. Antioxidant activity, determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assay, was not detected in the plain film but increased with increasing extract concentration. The film with 3% CNTE exhibited the highest antioxidant activity of 58.93 µmol Trolox equivalents (TE) g<sup>-1</sup> film. This study highlights the potential of CNTE as an effective edible additive for developing antioxidant and ultraviolet barrier films with improved mechanical strength and water resistance for food packaging applications. Ultimate tensile strength ; DPPH ; Materials science ; Chitosan ; Polyvinyl alcohol ; Antioxidant ; Food science ; Composite material ; Swelling ; Food packaging ; Active packaging ; Trolox ; Chemistry ; Organic chemistry Nanocomposite Films for Food Packaging ; Natural Fiber Reinforced Composites ; biodegradable polymer synthesis and properties
Authors: Miriam Bates | Marije Risselada | Daniela C. Peña-Hernandez | Kenitra Hendrix | George E. Moore
Source: American Journal of Veterinary Research (article, 2024-01-09)
Field: Materials Science — Materials Chemistry

Antibacterial activity of silver nanoparticles against Escherichia coli and methicillin-resistant Staphylococcus pseudintermedius is affected by incorporation into carriers for sustained release AgNP has antibacterial activity against E coli and MRSP, which can be reduced when incorporated into carriers for sustained release. Poloxamer 407 gel alone and combined with AgNP exerts antibacterial activity against E coli and MRSP. Staphylococcus pseudintermedius ; Escherichia coli ; Microbiology ; Staphylococcus ; Staphylococcus aureus ; Silver nanoparticle ; Antibacterial activity ; Chemistry ; Biology ; Nanoparticle ; Bacteria ; Nanotechnology ; Materials science ; Biochemistry Nanoparticles: synthesis and applications
Authors: Nikita Rybin | Dmitrii Maksimov | Yu. P. Zaikov | Alexander V. Shapeev
Source: Journal of Molecular Liquids (article, 2024-07-18)
Field: Materials Science — Materials Chemistry

Thermophysical properties of Molten FLiNaK: A moment tensor potential approach Moment tensor ; Tensor (intrinsic definition) ; Moment (physics) ; Materials science ; Thermodynamics ; Physics ; Mathematics ; Composite material ; Classical mechanics ; Geometry Thermal Expansion and Ionic Conductivity ; Thermodynamic and Structural Properties of Metals and Alloys ; Rare-earth and actinide compounds
Authors: Samiah Shahid | Ayesha Ahmed Khan | Wajeehah Shahid | Mehvesh Rehan | Roha Asif | Haseeb Nisar | Qudsia Kanwal | Jeong Ryeol Choi
Source: International Journal of Nanomedicine (article, 2024-06-01)
Field: Materials Science — Materials Chemistry

Nanoenzymes: A Radiant Hope for the Early Diagnosis and Effective Treatment of Breast and Ovarian Cancers Breast and ovarian cancers, despite having chemotherapy and surgical treatment, still have the lowest survival rate. Experimental stages using nanoenzymes/nanozymes for ovarian cancer diagnosis and treatment are being carried out, and correspondingly the current treatment approaches to treat breast cancer have a lot of adverse side effects, which is the reason why researchers and scientists are looking for new strategies with less side effects. Nanoenzymes have intrinsic enzyme-like activities and can reduce the shortcomings of naturally occurring enzymes due to the ease of storage, high stability, less expensive, and enhanced efficiency. In this review, we have discussed various ways in which nanoenzymes are being used to diagnose and treat breast and ovarian cancer. For breast cancer, nanoenzymes and their multi-enzymatic properties can control the level of reactive oxygen species (ROS) in cells or tissues, for example, oxidase (OXD) and peroxidase (POD) activity can be used to generate ROS, while catalase (CAT) or superoxide dismutase (SOD) activity can scavenge ROS. In the case of ovarian cancer, most commonly nanoceria is being investigated, and also when folic acid is combined with nanoceria there are additional advantages like inhibition of beta galactosidase. Nanocarriers are also used to deliver small interfering RNA that are effective in cancer treatment. Studies have shown that iron oxide nanoparticles are actively being used for drug delivery, similarly ferritin carriers are used for the delivery of nanozymes. Hypoxia is a major factor in ovarian cancer, therefore MnO<sub>2</sub>-based nanozymes are being used as a therapy. For cancer diagnosis and screening, nanozymes are being used in sonodynamic cancer therapy for cancer diagnosis and screening, whereas biomedical imaging and folic acid gold particles are also being used for image guided treatments. Nanozyme biosensors have been developed to detect ovarian cancer. This review article summarizes a detailed insight into breast and ovarian cancers in light of nanozymes-based diagnostic and therapeutic approaches. Medicine ; Oncology ; Breast cancer ; Internal medicine ; Gynecology ; Cancer Advanced Nanomaterials in Catalysis ; Nanoplatforms for cancer theranostics ; Advanced biosensing and bioanalysis techniques
Authors: Gianluca Minervini | Annamaria Panniello | Carlo Nazareno Dibenedetto | Antonino Madonia | Elisabetta Fanizza | Maria Lucia Curri | Marinella Striccoli
Source: Small (review, 2024-08-20)
Field: Materials Science — Materials Chemistry

Exploring Carbon Dots: Green Nanomaterials for Unconventional Lasing In recent years, the progress toward lighting miniaturization is focused on luminescent nanomaterials. Among them, fluorescent carbon dots (CDs) are receiving increasing attention thanks to their astonishing optical properties complemented by their intrinsic biocompatibility and low toxicity. The CDs can be easily dispersed in water, organic solvents or incorporated in polymeric matrices, preserving their emission properties. However, the relationship between their structural and optical properties is still not fully elucidated, motivating a consistent research effort for the comprehension of their features. Nevertheless, CDs demonstrate to be efficient gain materials for lasing, thanks to their high quantum yield (QY), emission tunability in the visible and near infrared (NIR) range, short lifetimes, and high absorption cross section, even if the synthetic reproducibility, the low reaction yield and the spectral width of the emission may limit their effective exploitation. This review summarizes the latest advancements in the investigation of the characteristic properties of CDs that make laser action possible, illustrating optical geometries for lasing and random lasing, both in solution and solid state, and the few currently demonstrated breakthroughs. While the journey toward their effective application is still long, the potential of CD-based laser sources is promising in various technological fields and futuristic perspectives will be discussed. Lasing threshold ; Materials science ; Nanomaterials ; Nanotechnology ; Quantum yield ; Laser ; Biocompatibility ; Miniaturization ; Luminescence ; Optoelectronics ; Fluorescence ; Optics ; Wavelength ; Physics Carbon and Quantum Dots Applications ; Nanocluster Synthesis and Applications ; Random lasers and scattering media
Authors: Haoming Wu | Shuhao Yang | Jiuhong Li | Teng Ma | Keyi Yang | Tianzheng Liao | Wanyue Feng | Bing‐Nan Zhou | Xin Yong | Kai Zhou | Xulin Hu
Source: MedComm – Biomaterials and Applications (article, 2024-09-01)
Field: Materials Science — Polymers and Plastics

Current status and challenges of shape memory scaffolds in biomedical applications Abstract The rapid evolution of clinical medicine, materials science, and regenerative medicine has rendered traditional implantable scaffolds inadequate for addressing the complex therapeutic demands of various diseases. Currently, implantable scaffolds in clinical practice are mainly made of metal, with the disadvantages of high stiffness, poor toughness, and low deformation. This paper offers a thorough review of shape memory scaffolds (SMSs), emphasizing their distinctive self‐recovery and adaptive functionalities that enhance compatibility with injured tissues, surpassing the capabilities of conventional metallic biomaterials. It delves into the limitations of current clinical scaffolds and the requisite performance metrics for effective implants and outlines the essential materials and fabrication methods for SMSs. Moreover, we enumerate the biomedical applications of SMMs with different response types, including thermology‐responsive, water‐responsive, and light‐responsive. The discussion extends to the burgeoning applications of SMSs in biomedical engineering, including their utility in bone tissue engineering, cardiovascular stenting, tubular structures, and cardiac patches, which underscore their potential in minimally invasive procedures and dynamic tissue interactions. This review concludes with an analysis of current challenges and prospects, providing valuable insights for developing and applying SMSs in the biomedical sector. Current (fluid) ; Computer science ; Materials science ; Cognitive science ; Engineering ; Psychology ; Electrical engineering Polymer composites and self-healing ; Bone Tissue Engineering Materials ; Advanced Sensor and Energy Harvesting Materials
Authors: Jijia Liang | Zhongtian Dong | Ning Xu | Tao Chen | Jie Liang | Mingzhu Xia | Fenghe Wang
Source: Toxics (review, 2024-12-20)
Field: Materials Science — Materials Chemistry

A Comprehensive Review of Multifunctional Nanozymes for Degradation and Detection of Organophosphorus Pesticides in the Environment Organophosphorus pesticides are the most extensively utilized agrichemicals in the world. They play a crucial role in regulating crop growth, immunizing against pests, and improving yields, while their unregulated residues exert serious detrimental effects on both the environment and human health. Many efforts have been made in the world to monitor organophosphorus pesticides and solve the issues caused by them. Nanozymes, as one kind of enzyme mimic that is artificially designed to simulate the function of natural enzymes, have aroused a lot of attention due to their unparalleled advantages. Nanozymes inherit both the unique properties of nanomaterials and catalytic functions, which could overcome the limitations inherent in natural enzymes and have great versatile and adaptable application prospects. This review presents a recent advancement in synthesizing multifunctional nanozymes with enzymatic-like activities by using various nanomaterials to degrade and detect organophosphorus pesticides. It mainly encompasses metal-based nanozymes, carbon-based nanozymes, metal-organic-framework-based nanozymes, and single-atom-based nanozymes. Additionally, this paper discusses the potential of nanozymes as novel functional environmental materials. Pesticide ; Environmental chemistry ; Degradation (telecommunications) ; Chemistry ; Pesticide degradation ; Computer science Advanced Nanomaterials in Catalysis ; Advanced biosensing and bioanalysis techniques ; Electrochemical sensors and biosensors
Authors: Héctor Martínez-Pérez-Cejuela | Maria Maddalena Calabretta | Elisa Michelini
Source: Analytical Chemistry (article, 2024-10-07)
Field: Materials Science — Materials Chemistry

Chemiluminescence “Add-and-Measure” Sensing Paper Based on the Prussian Blue/Metal–Organic Framework MIL-101 Nanozyme for Rapid Hydrogen Peroxide Detection In this work, a chemiluminescent sensing paper has been developed using a peroxidase biomimetic metal-organic framework as a versatile host platform. For the first time, we have explored the use of in situ growth of Prussian Blue nanoparticles (PB-NPs) onto the MIL-101(Fe) structure for the assembly of a ready-to-use sensing paper. In situ growth of PB-NPs has been performed on the surface of the MIL-101(n) family. This novel composite, named PB-NPs@MIL-101(Fe), has been successfully used to develop a sensing paper for one-step detection of H<sub>2</sub>O<sub>2</sub> in real samples (commercial disinfectant solutions and tap water samples). The as-prepared material was fully characterized, including X-ray analysis, Fourier transform infrared, scanning and transmission electron microscopies, nitrogen isotherms, and elemental analysis. After the characterization, the analytical performance of the PB-NPs@MIL-101(Fe) sensing paper was evaluated. The low-cost sensor (0.15 euro per unit) was able to detect down to 8.2 μM (corresponding to 8.2 × 10<sup>-11</sup> mol) H<sub>2</sub>O<sub>2</sub> using only 10 μL of sample with satisfactory reproducibility (relative standard deviation 17%). Prussian blue ; Chemistry ; Chemiluminescence ; Hydrogen peroxide ; Metal-organic framework ; Measure (data warehouse) ; Metal ; Inorganic chemistry ; Photochemistry ; Organic chemistry ; Electrode ; Physical chemistry ; Electrochemistry Advanced Nanomaterials in Catalysis ; Advanced biosensing and bioanalysis techniques ; Electrochemical sensors and biosensors
Authors: Yang Meng | Haiyan Wang | Jinxia Liang | Chun Zhu | Jun Li
Source: Precision Chemistry (article, 2024-01-26)
Field: Materials Science — Materials Chemistry

Computational Screening of Pt<sub>1</sub>@Ti<sub>3</sub>C<sub>2</sub>T<sub>2</sub> (T = O, S) MXene Catalysts for Water–Gas Shift Reaction Single-atom catalysts (SACs) provide an opportunity to elucidate the catalytic mechanism of complex reactions in heterogeneous catalysis. The low-temperature water-gas shift (WGS) reaction is an important industrial technology to obtain high purity hydrogen. Herein, we study the catalytic activity of Pt<sub>1</sub>@Ti<sub>3</sub>C<sub>2</sub>T<sub>2</sub> (T = O, S) SACs, where one subsurface Ti atom with three T vacancies in the functionalized Ti<sub>3</sub>C<sub>2</sub>T<sub>2</sub> (T = O, S) MXene is substituted by one Pt atom, for the low-temperature WGS reaction, using density functional theory (DFT). The results show that Pt<sub>1</sub>@Ti<sub>3</sub>C<sub>2</sub>T<sub>2</sub> provides an excellent platform for the WGS reaction by its bowl-shaped vacancy derived from the Pt<sub>1</sub> single atom and three T defects surrounding it. Especially, Pt<sub>1</sub>@Ti<sub>3</sub>C<sub>2</sub>S<sub>2</sub> SAC has higher catalytic performance for the WGS reaction, due to the weaker electronegativity of the S atom than the O atom, which significantly reduces the energy barrier of H* migration in the WGS reaction, which is often the rate-determining step. In the most favorable redox mechanism of the WGS reaction on Pt<sub>1</sub>@Ti<sub>3</sub>C<sub>2</sub>S<sub>2</sub>, the rate-determining step is the dissociation of OH* into O* and H* with the energy barrier as low as 1.12 eV. These results demonstrate that Pt<sub>1</sub>@Ti<sub>3</sub>C<sub>2</sub>S<sub>2</sub> is promising in the application of MXenes for low-temperature WGS reactions. Water-gas shift reaction ; Catalysis ; Materials science ; Physical chemistry ; Chemistry ; Organic chemistry MXene and MAX Phase Materials ; Nanomaterials for catalytic reactions ; Advanced Photocatalysis Techniques