Article
Biochemistry & Molecular Biology
Theeranuch Nachaithong, Pairot Moontragoon, Prasit Thongbai
Summary: The (Zn, Nb)-codoped TiO2 nanopowder and ceramic with highly dense microstructure were successfully synthesized. The ZNTO ceramic exhibited thermally activated giant dielectric relaxation, and the outer surface layer had a slight effect on the dielectric properties. Theoretical calculations revealed the presence of specific defect clusters, supporting the absence of electron-pinned defect-dipoles and suggesting an alternative mechanism for the giant dielectric properties.
Article
Environmental Sciences
Umesh Chejara, Anamika Prajapati, Arvind Kumar
Summary: This study synthesized and characterized nano-particles of polycrystalline magnesium and iron ferrite doped with rare earth materials. The electrical properties of these materials were measured, and it was found that they exhibit variation behavior with respect to frequency. The study suggests that these materials may have potential applications in the fabrication of microwave antennas to reduce energy losses.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Textiles
Yaya Zhang, Jiyong Hu, Xiong Yan, Huating Tu
Summary: The thickness and dielectric properties of fabric substrate are crucial in the design of wearable antennas, with a thicker substrate with low dielectric constant and high loss tangent enhancing antenna bandwidth. Sewing multiple fabrics together can increase thickness while maintaining flexibility, but controlling dielectric properties is challenging due to the lack of relationship between materials. A proposed circuit model was used to establish equivalent capacitance and resistance models for sewed multilayer fabric to predict its loss tangent, showing good agreement with experimental results and providing a basis for multilayer flexible electronic substrate design.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Materials Science, Ceramics
M. D. Hossain, A. Masud, M. N. I. Khan, S. S. Sikder
Summary: Nanostructured Bi0.9Eu0.1FeO3 (BEFO), Ni0.6Zn0.4Fe2O4 (NZF), and (1-x).BEFO + x.NZF composites have been synthesized and characterized. The addition of NZF content in the composites modified their magnetic and dielectric properties. The optimized 0.9 BEFO + 0.1 NZF composite showed the highest permeability and dielectric values with the least amount of losses.
CERAMICS INTERNATIONAL
(2023)
Article
Instruments & Instrumentation
Haiping Zhou, Yanjun Wang, Yuexin Gao, Ze Zhang, Siyu Liu, Yanyan Wang, Meijie Yu, Xianming Wang, Chengguo Wang
Summary: This study prepared composite coatings with low infrared emissivity and low dielectric properties using modified EPDM as binder. Appropriate grafting modification significantly improved the mechanical properties of the composite coatings. The effects of grafting modification on the infrared emissivity and dielectric properties were minimal. The study revealed the mechanism of improved compatibility and interfacial bonding between filler and binder due to grafting modification.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Computer Science, Information Systems
Jurgen K. A. Nogueira, Joao G. D. Oliveira, Samuel B. Paiva, Valdemir P. Silva Neto, Adaildo G. D'Assuncao
Summary: A sensor is proposed to characterize the complex permittivity of dielectric materials in a non-destructive and non-invasive way. The sensor is based on a rectangular patch microstrip two-port circuit with a complementary split-ring resonator (CSRR) element. The sensitivity analysis is determined by varying the permittivity of the material under test (MUT). The proposed sensor is simulated and analyzed using Ansoft HFSS software, and the results show good agreement with measurements made on two different dielectric material samples with known complex permittivity values.
Article
Materials Science, Ceramics
Bhoomika Yadav, Kamal K. Kar, Manas K. Ghorai, Devendra Kumar
Summary: AC electrical measurements were conducted on iodine-doped CaCu3Ti4O12-xIx ceramic specimens. The crystalline structure, microstructure, and oxidation state of various ions were analyzed using XRD, SEM, and XPS. Dielectric relaxations in different compositions were investigated and similar charge carriers were found in conduction and relaxation processes. The XPS study revealed a reduction in [ VO center dot center dot ] concentration and an increase in [ V '' M] with increasing iodine concentration. Metal ions were found to segregate at grain boundaries, leading to increased resistivity and minimized dielectric losses. A high concentration of iodine doping promoted the formation of a barrier layer capacitor.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
RubalyaValantina Sathianathan, Aniruthaan Kannapiran, Natarajan Shanmugam
Summary: The study analyzed the oxidative stability of groundnut oil and mustard oil blended with varying concentrations of alpha-tocopherol and TBHQ, finding that these antioxidants have a regulating effect on the insulation nature of the oil, with alpha-tocopherol showing a more effective synergistic effect. Higher breakdown voltage and greater stability were observed in oils with the addition of antioxidants in low concentrations, with potential implications for selecting eco-friendly coolants in engineering and industry.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Computer Science, Information Systems
Longzhu Cai
Summary: This paper introduces an embedded resonator method for microwave substrate characterization, which can calculate the effective dielectric constant of the structure and substrate, and determine quality factors. Experimental results show that the method has high extraction accuracy.
Article
Nanoscience & Nanotechnology
Azim Uddin, Diana Estevez, Rabia Khatoon, Faxiang Qin
Summary: With the miniaturization and integration of electronic components, the demand for low-cost flexible composites with temperature-stable high dielectric constant and low loss has increased. This study developed silicone elastomer composites based on hydrothermally grown MoS2 on tissue paper-derived cellulose carbon (CC). The composites showed high dielectric constant and low loss, as well as flexibility and temperature stability, making them attractive for microstrip antenna applications and extreme environment electronics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Jutapol Jumpatam, Jakkree Boonlakhorn, Bundit Putasaeng, Narong Chanlek, Prasit Thongbai
Summary: The study investigated the phase formation, microstructural, dielectric properties, and nonlinear behaviors of (Na1/3Ca1/3Yb1/3)Cu3Ti4O12 ceramics, showing good dielectric performance and nonlinear behavior. Analysis revealed that the presence of Cu+, Cu2+, and Ti3+ ions might be the major cause of its n-type semiconductor nature inside the grains.
SOLID STATE SCIENCES
(2022)
Article
Instruments & Instrumentation
Yanjun Wang, Haiping Zhou, Yuexin Gao, Ze Zhang, Siyu Liu, Sijia Zhong, Meijie Yu, Jianjun Liu, Chengguo Wang
Summary: In this study, a composite coating with low infrared emissivity and high radar wave transmittance was prepared by sol-gel method. By adjusting the thickness of the surface modification layer of the floating aluminum powder, the dielectric constant and dielectric loss tangent values of the composite coating were significantly reduced. At a TEOS addition amount of 1g, a composite coating with an infrared emissivity of less than 0.6 was obtained.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Polymer Science
Sebastian Bonardd, Cesar Saldias, Angel Leiva, David Diaz Diaz, Galder Kortaberria
Summary: Polymethacrylates containing sulfonyl and nitrile functional groups were successfully prepared via conventional radical polymerization and RAFT, with thermal and dielectric properties evaluated based on differences in molecular weights and dispersity. Despite variations in properties, all polymers exhibited high dielectric performance, making them suitable candidates for energy storage applications.
Article
Materials Science, Multidisciplinary
Ch. Rambabu, Susmitha Uppugalla, Ritesh Verma, A. Ramakrishna, N. Murali, Ch. Shivanarayana, D. Parajuli, B. Suryanarayana, Khalid Mujasam Batoo, Sajjad Hussain, P. V. Lakshmi Narayana
Summary: Sol-gel auto combustion method was used to synthesize M-type La3+ and Ni2+ substituted strontium nano-hexaferrite powders (Sr1-xLaxFe12-yNiyO19, where x = y = 0.0, 0.05, 0.1, 0.15, and 0.2) successfully. The prepared powders were sintered at 1200 degrees C for 2 h. Various characterization techniques were employed to investigate the structural, morphological, magnetic, and dielectric properties of the samples at room temperature.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Sani Kundu, Toton Sarkar, Ashis Bhattacharjee
Summary: Hematite nanomaterials were synthesized by thermal decomposition of different precursors, and the dielectric properties and conduction mechanisms were studied. The hematite nanomaterials exhibited particle-size-dependent high dielectric constant, highlighting their potential for applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Composites
Kalkidan Gossaye, Kiran Shahapurkar, Venkatesh Chenrayan, Ibrahim M. Alarifi, Vineet Tirth, Manzoore Elahi M. Soudagar, Ali Algahtani, Abdulaziz H. Alghtani
Summary: Environmental pollution is a major challenge that needs to be addressed, and utilizing or recycling wastes can bring positive environmental and economic benefits. In this study, epoxy based composites were prepared using Habesha eggshells from Ethiopia, and their physical and mechanical properties were characterized. The results showed that increasing the eggshell content led to higher density of the composites, and the modulus and strength were sensitive to variations in the strain rate.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Analytical
Long Zhang, Farzana Bibi, Imtiyaz Hussain, Muhammad Sultan, Adeel Arshad, Saqib Hasnain, Ibrahim M. Alarifi, Mohammed A. Alamir, Uzair Sajjad
Summary: This study develops an optimized deep learning model based on more than 4000 data points to accurately predict the strain of AM lattice structures with different topologies. Stress and relative density were found to have the most significant impact on strain.
Article
Physics, Applied
Lal Sing Naik, D. G. Prakasha, M. V. V. N. L. Sudharani, K. Ganesh Kumar
Summary: The investigation of flow properties of carbon nanotubes (CNTs) across a stretching surface has been completed, considering the effects of radiation, chemical reactions, and activation energy. Approximations and transformations are used to obtain flow expressions in nondimensional form. The bvp4c code from MATLAB is utilized to solve the model, and graphic representation of relationships between variables and momentum, temperature field, and concentration are employed. It is observed that a larger f booms value leads to a micro-rotation distribution, and a thicker s value results in a thinner solutal boundary layer thickness.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Thermodynamics
D. G. Prakasha, M. V. V. N. L. Sudharani, K. Ganesh Kumar, Essam M. Elsaid, Mohamed R. Eid
Summary: This study investigates the influence of a magnetic dipole on swirling flow and heat transmission over a deformable cylinder. The model considers the effects of alumina alloys nanoparticles and linear radiation in (AA7075 and AA7072) viscous nanofluids-based-H2O. The Navier-Stokes equation is used to quantify the predicted flow. The boundary layer approximation of the Navier-Stokes equation is used to formulate the partial differential equations (PDEs) required for studying the flow assumptions.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Materials Science, Composites
Ibrahim M. Alarifi
Summary: In this study, artificial bones made of HA/PAN and PLA were developed as potential replacements for natural bone. Composite filaments were fabricated using HA/PAN and PLA and applied to produce reentrant artificial bone materials. Scanning electron microscopy and energy-dispersive X-ray spectroscopy were used to analyze the scaffold morphology and elemental composition. Compressive tests were conducted to determine the optimal scaffolding prototype and assess the mechanical behavior of the cellular structure. The results showed that the auxetic cells influenced the bone macrostructure and PLA/HA scaffoldings exhibited excellent potential for bone deficiency restoration.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Mohamed Yassin, Kiran Shahapurkar, Venkatesh Chenrayan, Ibrahim M. Alarifi, Mohammed A. Alamir, Tarek M. A. A. El-Bagory
Summary: This study investigates the mechanical properties of moringa oleifera and bamboo fibers extracted from Ethiopia. Three types of woven composites, moringa/epoxy, bamboo/epoxy and moringa/bamboo/epoxy (hybrid), are fabricated with a fiber content of 60%. Tensile and flexural properties are analyzed, showing that all composites exhibit brittle failure. The woven composites have increased fracture strain and higher tensile modulus and strength compared to neat epoxy. Additionally, bamboo/epoxy and moringa/bamboo/epoxy composites demonstrate non-linear stress-strain profiles and superior flexural properties due to good bonding and compatibility. The flexural modulus and strength of the woven composites are higher than neat epoxy, with an increase of 31%-96% and 5.79%-51.12%, respectively. Scanning electron microscope analysis of fractured surfaces reveals the structure-property correlations.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Keyredin Selman, Kiran Shahapurkar, Venkatesh Chenrayan, Mohammed A. Alamir, Ibrahim M. Alarifi, Vineet Tirth, Abdulaziz H. Alghtani, Ali Algahtani, Tawfiq Al-Mughanam
Summary: This study investigates a novel composite consisting of Kulkual fibers and Titanium diboride (TiB2) filler reinforced epoxy composites. Kulkual, also known as Opuntia ficus-indica, is a plant plentifully found in Ethiopia and is utilized in the form of fibers along with TiB2 as reinforcement for synthesizing epoxy matrix composites. Six types of composites with varying content of Kulkual fibers and fixed TiB2 content are fabricated and their mechanical properties are evaluated. The results show that the addition of Kulkual fibers improves the tensile and flexural properties of the composites, with the EK-10 composite exhibiting the greatest improvement. Fractured surfaces are also analyzed to identify the structure-property relationships.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Vijayakumar Nimbagal, N. R. Banapurmath, M. A. Umarfarooq, Suraj Revankar, Ashok M. Sajjan, Manzoore Elahi M. Soudagar, Kiran Shahapurkar, Mohammed A. Alamir, Ibrahim M. Alarifi, Ashraf Elfasakhany
Summary: This study investigated the effects of carbon nanofibers (CNFs) and a combination of CNFs and micro-sized short carbon fibers (SCFs) on the mechanical, thermal, and fracture properties of epoxy-PLA composite. The incorporation of both CNFs and SCFs into the composite resulted in improved tensile, flexural, impact strength, and fracture toughness. The combined fillers showed a synergetic effect on enhancing the mechanical properties of the composite.
POLYMER COMPOSITES
(2023)
Review
Materials Science, Characterization & Testing
Alaa M. Almushaikeh, Saleh O. Alaswad, Mohammed S. Alsuhybani, Bandar M. AlOtaibi, Ibrahim M. Alarifi, Naif B. Alqahtani, Salem M. Aldosari, Sami S. Alsaleh, Ahmed S. Haidyrah, Alanood A. Alolyan, Basheer A. Alshammari
Summary: Polymer matrix composites are superior materials with excellent mechanical, thermal, and electrical properties compared to traditional metals. Carbon fiber reinforced thermoplastic (CFRTP) is gaining popularity in industries due to its recyclability, simplicity of processing, good characteristics, flexibility, and shorter production time. This study reviews the manufacturing techniques and applications of CFRTP, as well as the recovery and recycling methods of carbon fiber materials in polymer composites.
Article
Materials Science, Characterization & Testing
Ibrahim M. Alarifi
Summary: This research proposes a new method to simulate the failure of a 3D-printed engineering design. Fused deposition modeling (FDM) of PETG/CF material was used to develop and build the structure's topology, and the mechanical characteristics of the material were quantitatively linked to experimental results. The study demonstrates the use of FEA in 3D printing to evaluate the performance of a helmet chinstrap design under different production conditions, potentially reducing product design and development time.
Article
Materials Science, Characterization & Testing
Kiran Shahapurkar, M. C. Kiran, Mohammed A. Alamir, Vineet Tirth, Ibrahim M. Alarifi, Venkatesh Chenrayan
Summary: The quasi-static compressive response of crumb rubber-epoxy composites was investigated by changing the composition of crumb rubber. The composites showed elastic behavior followed by a plateau region, indicating the densification of rubber particles. The composites exhibited higher strains to failure and lower modulus of elasticity compared to neat epoxy. The energy absorption of the composites increased with increasing strain rate, with EC-30 showing the highest energy absorption.
POLYMERS & POLYMER COMPOSITES
(2023)
Article
Physics, Multidisciplinary
M. V. V. N. L. Sudharani, D. G. Prakasha, K. Ganesh Kumar, Ali J. Chamkha
Summary: A novel mathematical model for improving heat transfer using tri hybrid nanofluids is proposed in this paper. The slip flow and radiative heat transfer over a moving sheet with polymer-based tri hybrid nanofluid are investigated. Equations governing the flow are modeled under certain assumptions. Numerical solutions using a BVP4C solver (MATLAB) are obtained for the simplified equations. The effects of different parameters on the velocity and temperature profiles, as well as the skin friction and heat transfer rates, are discussed in detail through figures, showing higher Nusselt number in tri hybrid nanofluid compared to hybrid nanofluid flow.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Engineering, Multidisciplinary
R. Padmavathi, B. S. Dhruvathara, K. Rashmi, K. Ganesh Kumar
Summary: The present study examines the thermophysical feature of a 2D flow of a dusty Eyring-Powell fluid caused by a stretched sheet in the presence of a magnetic field. Through similarity transformation, the dimensionless heat and fluid flow equations are transformed into ordinary equations. Numerical methods are then used to solve the altered equations with the Runge-Kutta-Fehlberg 45 solver. We study and discuss in depth the flowing and heating attributes under various parameters, and validate the numerical solution by comparing it with past results. It is numerically proven that the velocity of both the fluid phase and particle phase increases with an increase in the Eyring Powell fluid parameter.
INTERNATIONAL JOURNAL OF MODELLING AND SIMULATION
(2023)
Article
Physics, Applied
Lal Sing Naik, D. G. Prakasha, M. V. V. N. L. Sudharani, K. Ganesh Kumar
Summary: This study investigates the fluid flow through a complex plate and considers the impacts of viscous dissipation, activation energy, and chemical reactions. The heat transport phenomena are explained using variable thermal conductivity theory. By transforming the flow-generating PDEs, nonlinear ordinary differential equations are obtained. The effects of parameters on velocity, temperature, and mass fields are analyzed, and MATLAB is used to handle the modeled problem graphically. The findings demonstrate that the changes in magnetic parameter greatly affect the effectiveness of the velocity field, and decreasing Prandtl values lead to more pronounced temperature profiles.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Materials Science, Composites
H. Mohit, M. R. Sanjay, Suchart Siengchin, Belal Kanaan, Vakkar Ali, Ibrahim M. Alarifi, Tarek M. A. A. El-Bagory
Summary: Dried leaves-cobalt fillers showed higher mechanical and thermal stability in epoxy, vinyl-ester, and polyester polymers. Fourier-transform infrared spectra and scanning electron microscope analysis revealed the production of novel hydroxyl functional groups and strong interfacial bonding between the fillers and the matrix. Additionally, dried leaves-ferrous filler-reinforced polymer hybrid composites exhibited higher thermal stability. The statistical analysis showed significant outcomes under a confidence level of 95%.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Rajalaxmi Sahoo, C. Reshma, D. S. Shankar Rao, C. V. Yelamaggad, S. Krishna Prasad
Summary: This study investigates the influence of the flexible spacer parity of a guest photoactive liquid crystalline dimer on the photonic bandgap features of the cholesteric and twist grain boundary smectic C phases of the host molecule. The results show that the parity of the photoactive dimer affects the width of the photonic bandgap and the blue-shift of the cholesteric phase. Additionally, the parity of the dimer also affects the layer spacing and two-dimensional periodicity of the liquid crystalline phases.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Sara Rozas, Alberto Gutierrez, Mert Atilhan, Alfredo Bol, Santiago Aparicio
Summary: This study presents a multiscale theoretical investigation on the use of bifunctional hydrophobic Deep Eutectic Solvent for carbon capture using tetrapropylammonium chloride, acetic acid, and ethanolamine. The characterization includes nanoscale analysis of CO2 absorption mechanisms and changes in liquid phase properties during gas capture.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Tabouli Eric Da-yang, Alhadji Malloum, Jean Jules Fifen, Mama Nsangou, Jeanet Conradie
Summary: In this study, the potential energy of different glycine tautomers and their interaction with Cu2+ cations was investigated. The results showed that the solvation medium and the presence of Cu2+ cations influenced the stability of glycine tautomers.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Xiaoliang Gou, Nan Ye, Qingqing Han, Junjie Cui, Long Yi Jin
Summary: In this study, amphiphilic rod-coil molecules with rigid DSA parts and flexible oligoether chains were designed and their assembly capacities were investigated. The morphology of the molecular aggregates was influenced by the pH of the solution and UV light, and the aggregates showed adsorption capacity for nitroaromatic compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Shuang Liu, Liyan Shan, Cong Qi, Wenhui Zhang, Guannan Li, Bei Wang, Wei Wei
Summary: Optimizing the design of styrene-butadiene-styrene copolymer (SBS) is crucial for producing cost-effective SBS modifiers and improving road quality. This study examined the influence of SBS content and molecular structure on viscosity and compatibility. The results showed that the viscosity contribution of SBS is determined by its molecular structure and phase morphology.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Artem A. Petrov, Ekaterina A. Titova, Aydar A. Akhmadiyarov, Ilnaz T. Rakipov, Boris N. Solomonov
Summary: This work focuses on the thermochemistry of solvation of azeotropes. The enthalpies of dissolution of azeotropes in different mediums were determined, and the impact of the structure of the azeotropes on their properties in solution was discussed. A correlation between enthalpies of solvation and molar refraction was used to determine the vaporization enthalpies of azeotropes for the first time. The results were found to be consistent with literature data, obtained using direct and calculated methods. These findings contribute to the analysis of the structure-property relationships of azeotropes.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
L. V. Kamaeva, E. N. Tsiok, N. M. Chtchelkatchev
Summary: Understanding the correlations between liquids and solids allows us to predict the thermodynamic parameter range favorable for the formation of intriguing solid phases by studying liquids. In this study, we experimentally and theoretically investigated an Al-Cu-Co system within different composition ranges, and identified high-temperature solid phases. Our findings demonstrated the correlation between the boundaries of different solid phases and undercooling and viscosity in the concentration area.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
R. Aneesh Kumar, S. Jamelah Al-Otaibi, Y. Sheena Mary, Y. Shyma Mary, Nivedita Acharjee, Renjith Thomas, Renjith Raveendran Pillai, T. L. Leena
Summary: In this study, the interactions between doped and pristine coronenes and adenine nucleobases were investigated using Density Functional Theory. The optimal configurations, adsorption energies, charge transfer, and electrical properties of each complex were calculated. It was found that doped coronene had stronger adsorption strength and charge transfer compared to pristine coronene. The stability of the complexes was attributed to non-covalent interactions in the interactive region. The change in electrical conductivity of coronenes after adsorption suggested their sensitivity towards DNA bases. The predicted energy gap and prolonged recovery time for adenine-coronene configurations indicated the potential application of pristine/doped coronene in DNA detection.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Gang Zhou, Yongwei Liu, Biao Sun, Zengxin Liu, Cuicui Xu, Rulin Liu, Qi Zhang, Yongmei Wang
Summary: The CFD-DEM method was used to simulate the dust deposition pattern in the bronchus of anchor digging drivers, revealing the highest dust concentration in the vortex region of the working face. The study also found a positive correlation between dust particle diameter and bronchial deposition rate, and a negative correlation with alveolar deposition rate.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Yan Zhang, Yafei Luo, Lingkai Tang, Mingyan E, Jianping Hu
Summary: This study investigates the effects of different transition metal decorations on B12N12 nanocages on the adsorption properties of nitrosourea drugs using computational methods. The results reveal the presence of weak non-covalent interactions between metals and nanocages, and the interaction between drugs and nanocages plays a significant role in drug adsorption. Compared to free drugs, the adsorption of drugs on nanocages can facilitate electron transfer, reduce energy gaps and chemical hardness, indicating activity at the target site.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
C. I. Alcolado, J. Poblete, L. Garcia-Rio, E. Jimenez, F. J. Poblete
Summary: In this study, the selective oxidation of aromatic aldehydes was investigated using Ru(VI) as a catalyst and hexacyanoferrate (III) as a cooxidant in an alkaline medium. The reaction mechanism involves complex reaction orders for the oxidant and the aromatic aldehyde, while the reaction order for Ru(VI) is one. The proposed mechanism includes two catalytic cycles and the formation and decomposition of complexes. Quantitative structure-activity relationship analysis showed that deactivating groups in the para-position enhance the process.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Inez A. Barbieri, Marcos L. S. Oliveira, Franciele S. Bruckmann, Theodoro R. Salles, Leonardo Zancanaro, Luis F. O. Silva, Guilherme L. Dotto, Eder C. Lima, Mu. Naushad, Cristiano R. Bohn Rhoden
Summary: This study evaluated the adsorption of zolpidem on magnetic graphene oxide and synthesized magnetic graphene oxide adsorbents for zolpidem removal. The best magnetic nanoadsorbent was found to have a removal percentage of 87.07% at specific pH and temperature conditions. The results suggest that the removal of zolpidem is related to the surface chemistry of the adsorbent rather than the surface area of graphene oxide. The adsorbent showed excellent adsorption efficiency and magnetic behavior, making it a promising material for removing zolpidem from aqueous solutions.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Hongyan Huang, Chunquan Li, Siyuan Huang, Yuling Shang
Summary: This study examines the sensitivity of the thermal conductivity of water-based alumina nanofluids to changes in concentration, sphericity, and temperature. The results show that volume fraction and temperature have a significant impact on the thermal conductivity, while sphericity also needs to be considered. A support vector machine regression model was created to analyze the sensitivity of the thermal conductivity to different parameters. The findings indicate that temperature, sphericity, and volume fraction are the most sensitive variables.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Correction
Chemistry, Physical
V. M. Pergamenshchik, T. Bryk, A. Trokhymchuk
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Valentyn Rudenko, Anatolii Tolochko, Svitlana Bugaychuk, Dmytro Zhulai, Gertruda Klimusheva, Galina Yaremchuk, Tatyana Mirnaya, Yuriy Garbovskiy
Summary: This paper reports on the synthesis, structural characterization, spectral and nonlinear-optical properties of glass nanocomposites made of glass forming ionic liquid crystals and nanoparticles. The study reveals that by exciting the nanocomposites within their absorption band, a control over effective optical nonlinearities can be achieved, allowing the modification of the magnitude and sign of the effective nonlinear absorption coefficient. The proposed strategy using metal-alkanoates based glass-forming ionic liquid crystals and nanoparticles shows great potential for the development of nanophotonics and plasmonics technologies.
JOURNAL OF MOLECULAR LIQUIDS
(2024)