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Search Results (95)

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Keywords = nano-sized inclusions

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16 pages, 633 KB  
Review
Synergistic Effects of Exercise and Nano-Curcumin Supplementation in Women with Lifestyle-Related Diseases: A Scoping Review
by Nafih Cherappurath, Muhammed Navaf, Halil İbrahim Ceylan, Masilamani Elayaraja, Kappat Valiyapeediyekkal Sunooj, Saranya T. Satheesan, Muhammed Ali Thoompenthodi, Shamshadali Perumbalath, Serdar Bayrakdaroğlu, Raul Ioan Muntean, Nikolaos Mavritsakis and Dilshith A. Kabeer
Nutrients 2025, 17(21), 3334; https://doi.org/10.3390/nu17213334 - 23 Oct 2025
Viewed by 199
Abstract
Background/Objectives: Lifestyle-related diseases such as obesity, diabetes, hypertension, metabolic syndrome, non-alcoholic fatty liver disease (NAFLD), and osteoarthritis disproportionately affect women due to hormonal, metabolic, and socio-cultural factors. Emerging evidence suggests that combining structured exercise with nano-curcumin, a bioavailable phytochemical formulation with potent antioxidant [...] Read more.
Background/Objectives: Lifestyle-related diseases such as obesity, diabetes, hypertension, metabolic syndrome, non-alcoholic fatty liver disease (NAFLD), and osteoarthritis disproportionately affect women due to hormonal, metabolic, and socio-cultural factors. Emerging evidence suggests that combining structured exercise with nano-curcumin, a bioavailable phytochemical formulation with potent antioxidant and anti-inflammatory properties, may provide synergistic benefits. This scoping review systematically synthesizes available evidence on the combined effects of nano-curcumin supplementation and exercise interventions on health outcomes in women with lifestyle-related diseases. Methods: Following the Joanna Briggs Institute methodology and the PRISMA-ScR framework, a comprehensive database search was conducted in March 2025 and updated in June 2025. Records were retrieved from Scopus (n = 30), Web of Science (n = 22), PubMed (n = 18), and other sources (n = 71), yielding a total of 141 studies. After screening and deduplication, eight studies met the inclusion criteria and were included in this review. All the studies were conducted in Iran with small sample sizes (12–53 participants) and short intervention durations (6–16 weeks). Therefore, the current evidence is geographically and demographically limited. Results: Across the included trials, the combined interventions produced additive or synergistic improvements in oxidative stress markers, inflammatory cytokines, lipid and glucose metabolism, cardiovascular function, pulmonary capacity, muscle fitness, and psychological outcomes (e.g., depression). When paired with nano-curcumin supplementation at different concentrations, high-intensity interval training, aerobic exercise, Pilates, and resistance training consistently outperformed exercise or supplementation alone in modulating antioxidant defenses, reducing systemic inflammation, and improving metabolic risk factors. Conclusions: The integration of exercise and nano-curcumin supplementation appears to confer superior benefits for women with lifestyle-related diseases compared with either approach alone. These findings highlight the potential of combining phytochemicals with lifestyle interventions to optimize women’s health outcomes. However, most available evidence originates from small, short-term studies in single geographic regions. Large-scale, multicenter, randomized controlled trials with diverse populations are warranted to establish standardized protocols and optimal dosing strategies, and to assess long-term safety and efficacy. Full article
(This article belongs to the Special Issue Botanicals and Nutritional Approaches in Metabolic Disorders)
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17 pages, 3538 KB  
Article
Enhanced Nanoparticle Collection Using an Electrostatic Precipitator Integrated with a Wire Screen
by Raíssa Gabrielle Silva Araújo Andrade and Vádila Giovana Guerra
Powders 2025, 4(3), 23; https://doi.org/10.3390/powders4030023 - 6 Aug 2025
Viewed by 678
Abstract
Electrostatic precipitators (ESPs) are widely applied to reduce particle concentrations. However, the performance of ESPs is impaired in the nanosized diameter range due to the difficulty in electrically charging these particles. The present work evaluated the inclusion of a wire screen, perpendicular to [...] Read more.
Electrostatic precipitators (ESPs) are widely applied to reduce particle concentrations. However, the performance of ESPs is impaired in the nanosized diameter range due to the difficulty in electrically charging these particles. The present work evaluated the inclusion of a wire screen, perpendicular to the airflow, as an additional collecting electrode of a single-stage wire-plate ESP containing two collecting plates and a single discharge wire. ESP performance was evaluated in terms of voltage, air velocity and electrode positioning in relation to the beginning of the collecting plate (inlet spacings of 1.5, 10 and 23 cm). When compared to theoretical prediction, the penetration results presented a decay for larger particles not predicted by the diffusion battery model. It was observed that the inclusion of the wire screen increased the removal of ultrafine particles and that the overall collection efficiencies increased up to 70% in the operating conditions evaluated. Moreover, the central positioning of the electrodes (inlet spacing of 10 cm) achieved the highest collection efficiencies at high voltages, but the final positioning (inlet spacing of 23 cm) presented a better performance at higher air velocities. Therefore, the wire screen can be an alternative to enhance nanoparticle collection. Full article
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31 pages, 62180 KB  
Article
Evaluation of the Suitability of High-Temperature Post-Processing Annealing for Property Enhancement in LPBF 316L Steel: A Comprehensive Mechanical and Corrosion Assessment
by Bohdan Efremenko, Yuliia Chabak, Ivan Petryshynets, Tianliang Zhao, Vasily Efremenko, Kaiming Wu, Tao Xia, Miroslav Džupon and Sundas Arshad
Metals 2025, 15(6), 684; https://doi.org/10.3390/met15060684 - 19 Jun 2025
Viewed by 1245
Abstract
This study aims to comprehensively assess the suitability of post-processing annealing (at 900–1200 °C) for enhancing the key properties of 316L steel fabricated via laser powder bed fusion (LPBF). It adopts a holistic approach to investigate the annealing-driven evolution of microstructure–property relationships, focusing [...] Read more.
This study aims to comprehensively assess the suitability of post-processing annealing (at 900–1200 °C) for enhancing the key properties of 316L steel fabricated via laser powder bed fusion (LPBF). It adopts a holistic approach to investigate the annealing-driven evolution of microstructure–property relationships, focusing on tensile properties, nanoindentation hardness and modulus, impact toughness at ambient and cryogenic temperatures (−196 °C), and the corrosion resistance of LPBF 316L. Annealing at 900–1050 °C reduced tensile strength and hardness, followed by a moderate increase at 1200 °C. Conversely, ductility and impact toughness peaked at 900 °C but declined with the increasing annealing temperature. Regardless of the annealing temperature and testing conditions, LPBF 316L steel fractured through a mixed transgranular/intergranular mechanism involving dimple formation. The corrosion resistance of annealed steel was significantly lower than that in the as-built state, with the least detrimental effect being observed at 1050 °C. These changes resulted from the complex interplay of annealing-induced structural transformations, including elimination of the cellular structure and Cr/Mo segregations, reduced dislocation density, the formation of recrystallized grains, and the precipitation of nano-sized (MnCrSiAl)O3 inclusions. At 1200 °C, an abundant oxide formation strengthened the steel; however, particle coarsening, combined with the transition of (MnCrSiAl)O3 into Mo-rich oxide, further degraded the passive film, leading to a sharp decrease in corrosion resistance. Overall, post-processing annealing at 900–1200 °C did not comprehensively improve the combination of LPBF 316L steel properties, suggesting that the as-built microstructure offers a favorable balance of properties. High-temperature annealing can enhance a particular property while potentially compromising other performance characteristics. Full article
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24 pages, 675 KB  
Article
Nano-Liposomal Carrier as Promising Dermal Delivery Platform for Fumaria officinalis L. Bioactives
by Rabiea Ashowen Ahmoda, Milena Milošević, Aleksandar Marinković and Aleksandra A. Jovanović
Pharmaceutics 2025, 17(6), 782; https://doi.org/10.3390/pharmaceutics17060782 - 14 Jun 2025
Cited by 2 | Viewed by 1629
Abstract
Background/Objectives: This study investigates the physical, rheological, and antioxidant properties of nano-liposomal formulations encapsulating Fumaria officinalis L. (fumitory) extract, focusing on their stability and performance under ultraviolet (UV) exposure, as well as polyphenol release within simulated skin conditions in a Franz diffusion cell. [...] Read more.
Background/Objectives: This study investigates the physical, rheological, and antioxidant properties of nano-liposomal formulations encapsulating Fumaria officinalis L. (fumitory) extract, focusing on their stability and performance under ultraviolet (UV) exposure, as well as polyphenol release within simulated skin conditions in a Franz diffusion cell. Methods: Liposomal formulations, composed of phospholipids with or without β-sitosterol or ergosterol, were evaluated for their encapsulation efficiency, liposome size, size distribution, zeta potential, viscosity, surface tension, density, oxidative stability, antioxidant capacity, and polyphenol recovery. Results: Encapsulation efficiency was the highest in phospholipid liposomes (72.2%) and decreased with the incorporation of sterols: 66.7% for β-sitosterol and 62.9% for ergosterol liposomes. Encapsulation significantly increased viscosity and reduced surface tension compared to the plain liposomes, suggesting modified interfacial behavior. The inclusion of fumitory extract significantly increased the viscosity of liposomes (from ~2.5 to 6.09–6.78 mPa × s), consistent with the observed reduction in particle size and zeta potential. Antioxidant assays (thiobarbituric acid reactive substances—TBARS, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid—ABTS, and 2,2-diphenyl-1-picrylhydrazyl—DPPH) confirmed enhanced lipid peroxidation inhibition and radical scavenging upon encapsulation, with ABTS activity reaching up to 95.05% in sterol-containing liposomes. Release studies showed that the free extract exhibited the fastest polyphenol diffusion (5.09 × 10−9 m2/s), while liposomes demonstrated slower/controlled release due to bilayer barriers. UV-irradiated liposomes released more polyphenols than untreated ones, particularly in the sterol-containing formulations, due to oxidative destabilization and pore formation. Conclusions: These findings highlight the potential of fumitory extract-loaded liposomes as stable, bioactive carriers with tunable polyphenol antioxidant release properties for dermal applications. Overall, liposomal formulations of fumitory extract exhibit significant potential for further development as a pharmaceutical, cosmetic, or dermo-cosmetic ingredient for use in the prevention and treatment of various skin disorders. Full article
(This article belongs to the Special Issue Emerging Trends in Skin Delivery Systems)
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19 pages, 2598 KB  
Article
Phospholipid/HP-β-CD Hybrid Nanosystems Amplify Neohesperidin Bioavailability via Dual Enhancement of Solubility and Stability
by Na Xia, Qian Zhou, Yanquan Liu, Dan Gao, Siming Zhu and Zuoshan Feng
Nanomaterials 2025, 15(11), 862; https://doi.org/10.3390/nano15110862 - 3 Jun 2025
Cited by 1 | Viewed by 827
Abstract
Neohesperidin (NH), a bioactive flavanone glycoside, exhibits multifaceted pharmacological properties including antioxidant and anti-inflammatory activities. However, its clinical application is severely constrained by inherent physicochemical limitations such as poor aqueous solubility and instability under physiological conditions. To address these challenges, this study developed [...] Read more.
Neohesperidin (NH), a bioactive flavanone glycoside, exhibits multifaceted pharmacological properties including antioxidant and anti-inflammatory activities. However, its clinical application is severely constrained by inherent physicochemical limitations such as poor aqueous solubility and instability under physiological conditions. To address these challenges, this study developed a dual-carrier nano-liposomal system through the synergistic integration of phospholipid complexation and hydroxypropyl-β-cyclodextrin (HP-β-CD) inclusion technologies. Two formulations—NH-PC (phospholipid complex) and NH-PC-CD (phospholipid/HP-β-CD hybrid)—were fabricated via ultrasonication-assisted ethanol precipitation. Comprehensive characterization using FTIR and PXRD confirmed the amorphous dispersion of NH within lipid bilayers, with complete elimination of crystalline diffraction peaks, indicative of molecular-level interactions between NH’s hydroxyl groups and phospholipid polar moieties. The engineered nanosystems demonstrated remarkable solubility enhancement, achieving 321.77 μg/mL (NH-PC) and 318.75 μg/mL (NH-PC-CD), representing 2.01- and 1.99-fold increases over free NH. Encapsulation efficiencies exceeded 95% for both formulations, with sustained release profiles revealing 60.81% (NH-PC) and 80.78% (NH-PC-CD) cumulative release over 72 h, governed predominantly by non-Fickian diffusion kinetics. In vitro gastrointestinal simulations highlighted superior bioaccessibility for NH-PC-CD (66.35%) compared to NH-PC (58.52%) and free NH (20.85%), attributed to enhanced stability against enzymatic degradation. Storage stability assessments further validated the robustness of HP-β-CD-modified liposomes, with NH-PC-CD maintaining consistent particle size (<3% variation) and encapsulation efficiency (>92%) over 30 days. Antioxidant evaluations demonstrated concentration-dependent DPPH radical scavenging, wherein nanoencapsulation significantly amplified NH’s activity compared to its free form. This study establishes a paradigm for dual-functional nanocarriers, offering a scalable strategy to optimize the delivery of hydrophobic nutraceuticals while addressing critical challenges in bioavailability and physiological stability. Full article
(This article belongs to the Special Issue Advanced Nanomedicine for Drug Delivery)
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29 pages, 1392 KB  
Systematic Review
Recent Advances in Vitamin E TPGS-Based Organic Nanocarriers for Enhancing the Oral Bioavailability of Active Compounds: A Systematic Review
by Chee Ning Wong, Siew-Keah Lee, Yang Mooi Lim, Shi-Bing Yang, Yik-Ling Chew, Ang-Lim Chua and Kai Bin Liew
Pharmaceutics 2025, 17(4), 485; https://doi.org/10.3390/pharmaceutics17040485 - 7 Apr 2025
Cited by 6 | Viewed by 3321
Abstract
Background: D-α-tocopheryl polyethylene glycol 1000 succinate (TPGS), an amphiphilic derivative of natural vitamin E, functions as both a drug efflux inhibitor and a protector against enzymatic degradation and has been widely incorporated into nano-formulations for drug design and delivery. Objective: This systematic review [...] Read more.
Background: D-α-tocopheryl polyethylene glycol 1000 succinate (TPGS), an amphiphilic derivative of natural vitamin E, functions as both a drug efflux inhibitor and a protector against enzymatic degradation and has been widely incorporated into nano-formulations for drug design and delivery. Objective: This systematic review evaluates TPGS-based organic nanocarriers, emphasizing their potential to enhance bioavailability of active compounds which include drugs and phytochemicals, improve pharmacokinetic profiles, and optimize therapeutic outcomes, eventually overcoming the limitations of conventional oral active compounds delivery. Search strategy: Data collection was carried out by entering key terms (TPGS) AND (Micelle OR Liposome OR Nanoparticle OR Nanotube OR Dendrimer OR Niosome OR Nanosuspension OR Nanomicelle OR Nanocrystal OR Nanosphere OR Nanocapsule) AND (Oral Bioavailability) into the Scopus database. Inclusion criteria: Full-text articles published in English and relevant to TPGS, which featured organic materials, utilized an oral administration route, and included pharmacokinetic study, were included to the final review. Data extraction and analysis: Data selection was conducted by two review authors and subsequently approved by all other authors through a consensus process. The outcomes of the included studies were reviewed and categorized based on the types of nanocarriers. Results: An initial search of the database yielded 173 records. After screening by title and abstract, 52 full-text articles were analyzed. A total of 21 papers were excluded while 31 papers were used in this review. Conclusions: This review concludes that TPGS-based organic nanocarriers are able to enhance the bioavailability of various active compounds, including several phytochemicals, leveraging TPGS’s amphiphilic nature, inhibition of efflux transporters, protection against degradation, and stabilization properties. Despite using the same excipient, variability in particle size, zeta potential, and encapsulation efficiency among nanocarriers indicates the need for tailored formulations. A comprehensive approach involving the development and standardized comparison of diverse TPGS-incorporated active compound formulations is essential to identify the optimal TPGS-based nanocarrier for improving a particular active compound’s bioavailability. Full article
(This article belongs to the Special Issue Biocompatible Polymers for Drug Delivery)
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24 pages, 881 KB  
Review
Effective Trace Mineral Processing Technology for Pigs and Broilers
by Hyunseo Lee and Minju Kim
Agriculture 2025, 15(5), 504; https://doi.org/10.3390/agriculture15050504 - 26 Feb 2025
Viewed by 1615
Abstract
Zinc (Zn), copper (Cu), iron (Fe), manganese (Mn), as well as selenium (Se) are vital trace minerals supplemented for pigs and broilers that support their biological activities. In animals, trace minerals demonstrate a variety of effects that promote growth and improve health, depending [...] Read more.
Zinc (Zn), copper (Cu), iron (Fe), manganese (Mn), as well as selenium (Se) are vital trace minerals supplemented for pigs and broilers that support their biological activities. In animals, trace minerals demonstrate a variety of effects that promote growth and improve health, depending on the form of supplementation (such as inorganic, organic, or nano forms) and the supplementation levels. Inorganic minerals with low bioavailability are excreted into the environment through feces, causing pollution. In contrast, organic minerals, which have higher bioavailability, can reduce mineral excretion into the environment. However, their high cost and the complexity of chelate analysis limit the complete replacement of inorganic minerals. Nano minerals, with their high biological surface area, exhibit enhanced bioavailability. Nonetheless, their effects are inconsistent, and their optimal usage levels have not been clearly established. Hot Melt Extrusion (HME) technology serves as an innovative mineral processing technology tailored to pigs and broilers. Minerals processed through HME achieve nanoscale size, providing a larger surface area and improved bioavailability. Additionally, heat and pressure reduce toxicity, allowing for a lower usage level of minerals compared to inorganic, organic, or nano minerals, while offering various advantages. This review aims to explore forms and inclusion levels of trace minerals in pigs and broilers, as well as to discuss HME-minerals generated through HME technology. Full article
(This article belongs to the Special Issue Utilizing Novel and Alternative Sources of Feed for Animal Production)
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16 pages, 4920 KB  
Article
Molecular Dynamics Simulations of CeO2 Nano-Fuel: Thermodynamic and Kinetic Properties
by Rui Zhang, Jianbo Zhou, Yingjie Zhao, Zhen He, Wenxiong Xi and Weidong Zhao
Symmetry 2025, 17(2), 296; https://doi.org/10.3390/sym17020296 - 16 Feb 2025
Viewed by 1090
Abstract
This study explores the thermodynamic and kinetic properties of CeO2 nano-fuels, with a particular focus on the influence of nanoparticle additives on the diffusion and thermal conductivity of C14-based fuel systems. Using molecular dynamics simulations and the COMPASS force field, we model [...] Read more.
This study explores the thermodynamic and kinetic properties of CeO2 nano-fuels, with a particular focus on the influence of nanoparticle additives on the diffusion and thermal conductivity of C14-based fuel systems. Using molecular dynamics simulations and the COMPASS force field, we model the interactions between C14 molecules and CeO2 nanoparticles, varying nanoparticle size and concentration. Our results reveal that the inclusion of CeO2 nanoparticles leads to significant enhancements in both thermal conductivity (increasing by 9.8–23.6%) and diffusion coefficients (increasing by approximately 140%) within the 20 °C to 100 °C temperature range. These improvements are attributed to the interactions between nanoparticles and fuel molecules, which facilitate more efficient energy and mass transport. Notably, nanoparticles with smaller sizes (0.2 nm and 0.5 nm) exhibit more pronounced effects on both the thermodynamic and kinetic properties than larger nanoparticle analogs (20 nm and 50 nm). The study also highlights the temperature-dependent nature of these properties, demonstrating that nanoparticle additives enhance the fuel’s thermal stability and diffusion behavior, particularly at elevated temperatures. This work provides valuable insights into the optimization of nano-fuel systems, with potential applications in enhancing the performance and efficiency of diesel combustion and heat transfer processes. Full article
(This article belongs to the Special Issue Symmetry Studies in Heat and Mass Transfer)
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23 pages, 1848 KB  
Review
Flavonoids and Flavonoid-Based Nanopharmaceuticals as Promising Therapeutic Strategies for Colorectal Cancer—An Updated Literature Review
by Andreea Smeu, Iasmina Marcovici, Cristina Adriana Dehelean, Stefania-Irina Dumitrel, Claudia Borza and Rodica Lighezan
Pharmaceuticals 2025, 18(2), 231; https://doi.org/10.3390/ph18020231 - 8 Feb 2025
Cited by 8 | Viewed by 3312
Abstract
Colorectal cancer (CRC) represents one of the most serious health issues and the third most commonly diagnosed cancer worldwide. However, the treatment options for CRC are associated with adverse reactions, and in some cases, resistance can develop. Flavonoids have emerged as promising alternatives [...] Read more.
Colorectal cancer (CRC) represents one of the most serious health issues and the third most commonly diagnosed cancer worldwide. However, the treatment options for CRC are associated with adverse reactions, and in some cases, resistance can develop. Flavonoids have emerged as promising alternatives for CRC prevention and therapy due to their multitude of biological properties and ability to target distinct processes involved in CRC pathogenesis. Their innate disadvantageous properties (e.g., low solubility and stability, reduced bioavailability, and lack of tumor specificity) have delayed the potential inclusion of flavonoids in CRC treatment regimens but have hastened the design of nanopharmaceuticals comprising a flavonoid agent entrapped in a nanosized delivery platform that not only counteract these inconveniences but also provide an augmented therapeutic effect and an elevated safety profile by conferring a targeted action. Starting with a brief presentation of the pathological features of CRC and an overview of flavonoid classes, the present study comprehensively reviews the anti-CRC activity of different flavonoids from a mechanistic perspective while also portraying the latest discoveries made in the area of flavonoid-containing nanocarriers that have proved efficient in CRC management. This review concludes by showcasing future perspectives for the advancement of flavonoids and flavonoid-based nanopharmaceuticals in CRC research. Full article
(This article belongs to the Special Issue Recent Advances in Natural Product Based Nanostructured Systems)
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17 pages, 8984 KB  
Article
Effects of Substrate Biasing and Sulfur Annealing on the Surface of MoS2 Thin Films and TFT
by Sudharsanam Subramaniyam, Sudhakar Bharatan, Sasikala Muthusamy and Sinthamani Sivaprakasam
Coatings 2025, 15(2), 146; https://doi.org/10.3390/coatings15020146 - 28 Jan 2025
Cited by 2 | Viewed by 2107
Abstract
In this work, we report the properties of molybdenum disulfide (MoS2) thin films deposited on the p-type silicon substrate using RF magnetron sputtering. The structural, vibrational and morphological properties of MoS2 thin films were investigated using the Raman spectroscopy, X-ray [...] Read more.
In this work, we report the properties of molybdenum disulfide (MoS2) thin films deposited on the p-type silicon substrate using RF magnetron sputtering. The structural, vibrational and morphological properties of MoS2 thin films were investigated using the Raman spectroscopy, X-ray diffraction technique (XRD), atomic force microscope (AFM) and scanning electron microscope (SEM). Raman spectroscopy result showed the appearance of broad E12g and A1g Raman peaks even without DC biasing the substrate and becomes sharp and distinct when the substrate is DC biased at 60 V. Post-deposition annealing in sulfur ambient resulted in sharp and distinct Raman E12g and A1g peaks confirming the formation of MoS2 thin film and improved Mo-S bonding on the top surface. X-ray diffraction spectra of the samples validates the formation of MoS2 thin film with the appearance of [002] XRD peak, when the substrates are biased. Improved morphological effects with the reduction in nano-sized defects, advent of continuous film and low surface rms roughness value of 0.872 nm, were observed on samples deposited with substrate biasing and post sulfur annealing. A back-gated thin film transistor was fabricated with Al as source-drain contacts and MoS2 as the semiconducting channel. The fabricated transistor exhibited p-type transfer characteristics with threshold voltage of −3.8 V. As a result of annealing and ambient exposure, MoO3 fragments on the top of thinned MoS2 layer resulted in extraction of hole from MoS2, resulting in the p-type behavior in the fabricated thin film transistor. The combination of XRD analysis, Raman measurements and EDS data of the film confirmed MoO3 inclusions in the MoS2 thin film. Full article
(This article belongs to the Section Thin Films)
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18 pages, 6624 KB  
Article
Lyophilized Small Extracellular Vesicles (sEVs) Derived from Human Adipose Stem Cells Maintain Efficacy to Promote Healing in Neuronal Injuries
by Brianna Jones, Rekha Patel, Bangmei Wang, Theresa Evans-Nguyen and Niketa A. Patel
Biomedicines 2025, 13(2), 275; https://doi.org/10.3390/biomedicines13020275 - 23 Jan 2025
Cited by 5 | Viewed by 2676
Abstract
Background: Traumatic brain injury (TBI) occurs in individuals of all ages, predominantly during sports, accidents, and in active military service members. Chronic consequences of TBI include declined cognitive and motor function, dementia, and emotional distress. Small extracellular vesicles (sEVs), previously referred to as [...] Read more.
Background: Traumatic brain injury (TBI) occurs in individuals of all ages, predominantly during sports, accidents, and in active military service members. Chronic consequences of TBI include declined cognitive and motor function, dementia, and emotional distress. Small extracellular vesicles (sEVs), previously referred to as exosomes, are nano-sized lipid vesicles that play a role in intercellular communication. Our prior research established the efficacy of sEVs derived from human adipose stem cells (hASC sEVs) in accelerating the healing of brain injuries. The hASC sEVs are a biologic therapeutic and need to be stored at −20 °C or −80 °C. This limits their use in translating to everyday use in clinics or their inclusion in first-aid kits for application immediately after injury. To address this, here we demonstrate that hASC sEVs can be stored at room temperature (RT) for two months post lyophilization. Methods: A transmission electron microscope (TEM) and nanoparticle tracking analysis (NTA) were used to validate the morphology of lyophilized RT sEVs. Using in vitro models of neuronal injury mimicking physical injury, inflammation, and oxidative stress, we demonstrate that lyophilized RT hASC sEVs are viable and promote the healing of neuronal injuries. Results: The lyophilized sEVs maintain their purity, size, and morphology upon rehydration. Lyophilized, RT stored sEVs showed better efficacy after two months compared with −80 °C stored sEVs. Conclusions: RT storage of lyophilized hASC sEVs maintains their efficacy to accelerate the healing of injuries in neuronal cells. This will advance the use of hASC sEVs, bringing them closer to use in clinics, home first-aid kits, and on battlefields by active service members. Full article
(This article belongs to the Special Issue Extracellular Vesicles and Exosomes as Therapeutic Agents)
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9 pages, 3135 KB  
Article
Hybrid Solder Joints: Viscosity Studies of the Nanocomposite Flux with Fe Nanoparticle Additions
by Andriy Yakymovych, Irina Wodak and Golta Khatibi
Metals 2025, 15(1), 93; https://doi.org/10.3390/met15010093 - 18 Jan 2025
Cited by 1 | Viewed by 1096
Abstract
Viscosity is one of the most important physical characteristics of choosing a flux for solder paste. However, not in all cases do the producers give information about the viscosity of commercial flux. A recent promising trend is to mix various kinds of nanoparticles [...] Read more.
Viscosity is one of the most important physical characteristics of choosing a flux for solder paste. However, not in all cases do the producers give information about the viscosity of commercial flux. A recent promising trend is to mix various kinds of nanoparticles with solder paste or flux and investigate the produced solder joints. However, the impact of nanosized inclusions on the viscosity of the flux has practically not been investigated. In this study, the temperature and shear rate dependencies of the viscosity of the nanocomposite flux were measured. For this purpose, the commercial flux has been mixed with Fe nanoparticles up to 2.0 wt.% of inclusions. It has been shown that viscosity increases with the addition of Fe nanoparticles. However, it is valid only for first heating up to circa 340 K. The viscosity values of the flux with and without nanosized inclusions are practically similar by further heating to 360 K as well as by subsequent cooling. Additionally, the performed differential thermal analysis has shown the heat effects, which are in good agreement with viscosity behavior. Full article
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25 pages, 3119 KB  
Article
MicroRNA Expression Profile in Acute Ischemic Stroke
by Shraddha Mainali, Gaurav Nepal, Kirill Shumilov, Amy Webb, Paolo Fadda, Darya Mirebrahimi, Mohammad Hamed, Patrick Nana-Sinkam, Bradford B. Worrall, Daniel Woo and Nicholas Johnson
Int. J. Mol. Sci. 2025, 26(2), 747; https://doi.org/10.3390/ijms26020747 - 17 Jan 2025
Cited by 6 | Viewed by 2579
Abstract
Acute ischemic stroke with large vessel occlusion (LVO) continues to present a considerable challenge to global health, marked by substantial morbidity and mortality rates. Although definitive diagnostic markers exist in the form of neuroimaging, their expense, limited availability, and potential for diagnostic delay [...] Read more.
Acute ischemic stroke with large vessel occlusion (LVO) continues to present a considerable challenge to global health, marked by substantial morbidity and mortality rates. Although definitive diagnostic markers exist in the form of neuroimaging, their expense, limited availability, and potential for diagnostic delay can often result in missed opportunities for life-saving interventions. Despite several past attempts, research efforts to date have been fraught with challenges likely due to multiple factors, such as the inclusion of diverse stroke types, variable onset intervals, differing pathobiologies, and a range of infarct sizes, all contributing to inconsistent circulating biomarker levels. In this context, microRNAs (miRNAs) have emerged as a promising biomarker, demonstrating potential as biomarkers across various diseases, including cancer, cardiovascular conditions, and neurological disorders. These circulating miRNAs embody a wide spectrum of pathophysiological processes, encompassing cell death, inflammation, angiogenesis, neuroprotection, brain plasticity, and blood–brain barrier integrity. This pilot study explores the utility of circulating exosome-enriched extracellular vesicle (EV) miRNAs as potential biomarkers for anterior circulation LVO (acLVO) stroke. In our longitudinal prospective cohort study, we collected data from acLVO stroke patients at four critical time intervals post-symptom onset: 0–6 h, 6–12 h, 12–24 h, and 5–7 days. For comparative analysis, healthy individuals were included as control subjects. In this study, extracellular vesicles (EVs) were isolated from the plasma of participants, and the miRNAs within these EVs were profiled utilizing the NanoString nCounter system. Complementing this, a scoping review was conducted to examine the roles of specific miRNAs such as miR-140-5p, miR-210-3p, and miR-7-5p in acute ischemic stroke (AIS). This review involved a targeted PubMed search to assess their influence on crucial pathophysiological pathways in AIS, and their potential applications in diagnosis, treatment, and prognosis. The review also included an assessment of additional miRNAs linked to stroke. Within the first 6 h of symptom onset, three specific miRNAs (miR-7-5p, miR-140-5p, and miR-210-3p) exhibited significant differential expression compared to other time points and healthy controls. These miRNAs have previously been associated with neuroprotection, cellular stress responses, and tissue damage, suggesting their potential as early markers of acute ischemic stroke. This study highlights the potential of circulating miRNAs as blood-based biomarkers for hyperacute acLVO ischemic stroke. However, further validation in a larger, risk-matched cohort is required. Additionally, investigations are needed to assess the prognostic relevance of these miRNAs by linking their expression profiles with radiological and functional outcomes. Full article
(This article belongs to the Special Issue Omics Science and Research in Human Health and Disease)
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18 pages, 3702 KB  
Article
Improved Biomineralization Using Cellulose Acetate/Magnetic Nanoparticles Composite Membranes
by Madalina Oprea, Andreea Madalina Pandele, Aurelia Cristina Nechifor, Adrian Ionut Nicoara, Iulian Vasile Antoniac, Augustin Semenescu, Stefan Ioan Voicu, Catalin Ionel Enachescu and Anca Maria Fratila
Polymers 2025, 17(2), 209; https://doi.org/10.3390/polym17020209 - 15 Jan 2025
Cited by 4 | Viewed by 1651
Abstract
Following implantation, infections, inflammatory reactions, corrosion, mismatches in the elastic modulus, stress shielding and excessive wear are the most frequent reasons for orthopedic implant failure. Natural polymer-based coatings showed especially good results in achieving better cell attachment, growth and tissue-implant integration, and it [...] Read more.
Following implantation, infections, inflammatory reactions, corrosion, mismatches in the elastic modulus, stress shielding and excessive wear are the most frequent reasons for orthopedic implant failure. Natural polymer-based coatings showed especially good results in achieving better cell attachment, growth and tissue-implant integration, and it was found that the inclusions of nanosized fillers in the coating structure improves biomineralization and consequently implant osseointegration, as the nanoparticles represent calcium phosphate nucleation centers and lead to the deposition of highly organized hydroxyapatite crystallites on the implant surface. In this study, magnetic nanoparticles synthesized by the co-precipitation method were used for the preparation of cellulose acetate composite coatings through the phase-inversion method. The biomineralization ability of the membranes was tested through the Taguchi method, and it was found that nanostructured hydroxyapatite was formed at the surface of the composite membrane (with a higher organization degree and purity, and a Ca/P percentage closer to the one seen with stoichiometric hydroxyapatite, compared to the one deposited on neat cellulose acetate). The results obtained indicate a potential new application for magnetic nanoparticles in the field of orthopedics. Full article
(This article belongs to the Special Issue Advanced Biodegradable Polymers for Biomedical Applications)
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20 pages, 6610 KB  
Review
Smart Polymer Composites for Electrical Heating: A Review
by Alexandr V. Shchegolkov, Aleksei V. Shchegolkov, Vladimir V. Kaminskii and Maxim A. Chumak
J. Compos. Sci. 2024, 8(12), 522; https://doi.org/10.3390/jcs8120522 (registering DOI) - 12 Dec 2024
Cited by 4 | Viewed by 2486
Abstract
The paper presents an overview of conductive polymer composites based on thermosetting materials, thermoplastics, and elastomers modified with carbon nanotubes (CNTs). To impart conductive properties to polymers, metal, carbon-dispersed materials, or their combinations are used. The inclusion of dispersed materials in polymers is [...] Read more.
The paper presents an overview of conductive polymer composites based on thermosetting materials, thermoplastics, and elastomers modified with carbon nanotubes (CNTs). To impart conductive properties to polymers, metal, carbon-dispersed materials, or their combinations are used. The inclusion of dispersed materials in polymers is associated with their microstructural features, as well as with polymerization methods. Such polymerization methods as melt mixing, solution technology, and introduction of fillers into the liquid phase of the composite with subsequent polymerization due to the use of a catalyst are known. Polymer composites that are capable of conducting electric current and changing their properties under the influence of an electric field, i.e., having one or more functional purposes, are called “smart” or intelligent. One such application is electric heating elements with the function of adaptive energy consumption or the effect of self-regulation of temperature depending on the surrounding conditions. A wide variety of polymers and dispersed materials with conductive properties determines a wide range of functional capabilities of the composite, including a positive temperature coefficient of resistance (PTCR) required to control temperature properties. The most effective filler in a polymer for obtaining a composite with desired properties is carbon nanomaterials, in particular, CNT. This is due to the fact that CNTs are a nanosized material with a high bulk density at a low weight, which allows for high electrical conductivity. Calculation of model parameters of polymer composites containing carbon nanostructures can be carried out using neural networks and machine learning, which give a fundamentally new result. The article contains sections with an assessment of various types of polymer matrices based on thermosets, thermoplastics, and elastomers. To impart electrically conductive properties, various options for fillers based on Ag, Au, Cu, Ni, Fe, and CNTs are considered. Methods for introducing dispersed fillers into polymer matrices are presented. Functional composites with a positive temperature coefficient and methods for their regulation are considered. The mechanisms of various electrophysical processes in conductive composites are considered, taking into account the resulting electrical conductivity based on the tunnel effect and hopping conductivity. An analysis of electric heaters based on various polymer matrices and dispersed fillers is carried out, taking into account their operating modes. Thus, the conducted review of modern scientific and practical research in the field of obtaining electrically conductive composites based on various types of polymer matrices with nanosized additives allows us to assess the prospects for the formation of functional composites for electrical heating, taking into account the mechanisms of electrical conductivity and new technologies based on machine learning and neural networks. Full article
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