Dominant Force Research Articles

Synthesis, crystal structure, hirshfeld study, DFT analysis, molecular docking study, antimicrobial activity of β-enaminonitrile bearing 1H-pyran

3-Amino-1-(3,4-dimethoxyphenyl)-8-methoxy-1H-benzo[f]chromene-2-carbonitrile (3-ABC, 4) was prepared and affirmed through the spectral data and single crystal X-rays diffraction. The molecule spatial attributes were revealed by the three-dimensional Hirshfeld surface, which is validated by comprehensive statistical evaluations. The key interactions that contribute to the crystal's stability and properties, such as π–π stacking and H⋯X contacts, were highlighted. The dominant forces in the crystal were explained by energy framework calculations and density functional theory analyses, which also show the geometric optimization aspects and molecular reactivity indicators. The focus is on the investigation of frontier molecular orbitals, aromaticity, and π–π stacking abilities. The research concluded by identifying electron density distributions, aromatic features, and possible reactivity sites, offering a complete picture of the compound's structural and electronic landscape. Compound 4 was screened for its antimicrobial capability against three Gram-positive, three Gram-negative bacteria, and three fungi, utilizing the reference antibiotic drug Ampicillin, Gentamycin, and Ketoconazole. Compound 4 exhibited favorable antimicrobial activities that were lower/resembled the reference antimicrobial agents with an IZ range of 15–31 mm. In addition, MIC, MBC, and MFC were assessed and screened for the target molecule 4, unveiling its revealing antimicrobial activities. Lastly, the molecular docking evaluation was implemented for the molecules interaction with the DHFR protein. The compounds exhibit significant interactions with the EGFR protein's active site.

Systematic free energy insights into the enhanced dispersibility of myofibrillar protein in low-salt solutions through ultrasound-assisted enzymatic deamidation.

This work aimed to investigate the effects of ultrasound assisted enzymatic deamidation by protein-glutaminase (PG) on the dispersion of myofibrillar protein (MP) in low-salt solutions. The solubility, structural characteristics, transmission electron microscopy, asymmetric-flow field-flow fractionation, steady shear rheological property and multiple light scattering of MP deamidated by PG (MP-PG) and MP pretreated with ultrasound followed by PG deamidation (MP-U-PG) were determined. Molecular docking and molecular dynamics (MD) simulations were used to estimate the interaction between PG and MP. Under ultrasound assistance, the MP deamidated for 16h (MP-U-PG16) showed the highest solubility (80.1%) in low-salt conditions, which is attributed to its highest absolute zeta potential and smallest particle size. Although secondary structure analysis showed that MP-PG and MP-U-PG had an increased α-helix ratio and a decreased β-sheet ratio, ultrasonic treatment had a significantly influence on the MD results. The results manifested that hydrogen bond was the primary forces driving the binding between PG and MP, and the hydrogen bond and hydrophobic interaction were the dominant forces responsible the binding between PG and MP pretreated with ultrasound. According to the energy landscapes theory, ultrasound could overcome the energy barriers through external force input and find the best pathway to achieve the final lowest energy state. Our research contributed to the improvement of the colloidal dispersibility of MPs under low-salt conditions and the regulation of protein interaction by ultrasound assistance.

Micro‐Rotors on Frictional Solid Surfaces via Optothermally‐Invoked Chirality

AbstractAs an elementary mode of locomotion, rotation has been ubiquitously demonstrated in macroscopic dimensions, or microscopically realized in levitated systems and hydrodynamic environments. However, it has remained an untouched research topic to achieve regulated rotation on solid surfaces at microscale, wherein friction serves as the dominant yet formidable external force. Here, this gap is bridged through an all‐optical approach. By utilizing pulsed light with an elongated Gaussian profile and twisting it relative to an illuminated object, chiral vortexes are introduced in both the optothermally excited elastic waves and the as‐induced surface friction, endowing the object with a restoring torque. Self‐regulation of the rotor and refueling of the chirality synergistically modulate the rotational motion. On this basis, orientation of the rotor can be adjusted arbitrarily by any specific angle, achieving an angular resolution of rad and rotation speed up to 10 rpm. Furthermore, the composite motion is demonstrated, combining both rotational and translational modes into the light field‐rotor system. The proposed technique extends the capability of optical manipulation on frictional solid surfaces by exploring the relation between the symmetry‐breaking condition and the modes of locomotion, which provides theoretical guidance and practical opportunities for building reconfigurable devices on solid substrates.

Advanced Ternary Cathode Materials for High-Performance Lithium-Ion Batteries

The global shift from fuel-powered vehicles to electric vehicles (EVs) is accelerating, driven by the need to achieve zero emissions. As a cornerstone of this transformation, the development of advanced battery technology is crucial. Among the various components, ternary cathode materials are emerging as a dominant force in powering next-generation EVs. This paper explores the factors negatively impacting the cycling stability and electrochemical performance of nickel-rich ternary cathode materials. In response, it proposes several modification strategies, including ion doping, single-crystal structuring, and surface coating. By exploring these individual approaches, the paper highlights the need for future research to focus on integrating multiple modification techniques. The primary objective is to create batteries with high energy density, superior cycling performance, excellent electrochemical characteristics, and enhanced safety—paving the way for breakthroughs in this rapidly evolving field.

Peran Budaya Populer dalam Memperkuat Identitas Nasional Indonesia di Era Globalisasi

In the era of globalization, popular culture has been a tool in understanding the complexity of international relations due to its easy access and simple packaging through technological advances. Globalization and the influx of other foreign cultures have been posing some threats and challenges in shifting national culture and values. The phenomenon of the influx of foreign cultures such as hallyu and westernization in Indonesia is slowly threatening Indonesia's national identity. Using the lens of Pop Culture and World Politics (PCWP) and Cultural Resistance from Antonio Gramsci (1971), the author examines in depth how the role of popular culture produced by Indonesian filmmakers and musicians can answer the challenges to the shift in Indonesia's national identity through cultural expression to oppose the dominant forces in the era of globalization at the international level. This research uses qualitative and descriptive methods in examining film and music artefacts produced by Indonesian filmmakers and musicians which are gaining international attention. The findings of this study aim to reveal that in the era of globalization, films and music produced by Indonesian filmmakers and musicians as the non-state actors play an important role in answering the challenges to the domination of foreign cultures in the context of maintaining Indonesia's original culture and identity by producing films and music containing local elements that are recognized and consumed by international audiences.

Producing Russian-Speaking Community Activities in Australia: The Role of Migrant Organisations and Russian Political Influence

ABSTRACT The prevailing perspective on migrant organisations emphasises their positive contributions and role in the lives of migrants from various countries worldwide. Drawing on Bourdieu’s field theory and the ‘community of unbelonging’ framework, the article presents a contrasting view that reveals the limitations of the celebratory understanding of migration organisations, their activities and representative function for ‘migrant community’ members. Based on ethnographic research in Australia, I show how Russian-speaking migrant institutions, due to their involvement in competitive struggles and the pro-Kremlin ideological network, can restrict public forms of community participation, the expression of collective memory, and civic practices employed within the migrant community. I demonstrate how Russia, aiming to implement its political and ideological goals and instrumentalise the diaspora, has established or supported a specific migrant institution: ‘migrant quasi-non-governmental organisations.’ Different migrant groups become involved in the Russian ideological compatriots project through these migrant quasi-NGOs, mediating Russia’s strategies to extend political and cultural influence. The dynamic processes in the field are influenced by the Russian-Ukrainian war and the emergence of new players wishing to act as cultural producers, and this shift of dominant forces impacts the production of community activities.

Platformized production of homonationalism: An ethnography of queer media production in China

Queer media production research, almost exclusively conducted in the western context, predominantly focuses on the queer-capital interplay and overlooks the role of the state in contexts where the state remains the dominant force in limiting LGBTQ rights. In bridging queer media production with homonationalism, this paper presents an ethnographic account of Danlan, the longest-lasting commercial queer media in China. We demonstrate that Danlan is experimenting with a nationalism-infused, non-confrontational, and de-westernized approach to LGBTQ visibility that requires it to align with the Chinese authority and distance from the framework of LGBTQ advocacy deemed western. Situated in the context of platformization, homonationalism also functions as a template for workers at Danlan to facilitate everyday production while minimizing political risks and increasing traffic, which further complicates its social-political implications. We understand this form of homonationalism as a quotidian platform practice that relies on intentional self-depoliticization and alignment with the state to sustain itself.

Application of a Scale Normalization Technique for High Resolution Analysis of the Magnetosheath at Mars

AbstractIn order to study spatial distributions of global magnetosheath structures, physicists often rely upon spatial binning, whereby space is divided into cells, each filled with the average value of all spacecraft measurements within that cell. The traditional binning schema utilizes a fixed Cartesian grid of cube bins. The morphology of the magnetosheath's boundaries are not fixed, however, but driven by upstream and planetary conditions. Therefore, the spatial structures are not fixed in Cartesian space, and thus a Cartesian binning technique will produce a highly coarse grained spatial distribution. We propose an alternative binning technique utilizing a scale normalized dimensionless coordinate system defined in terms of magnetosheath morphology. To demonstrate the efficacy of this technique, we apply a basic implementation to the Martian system. We are thereby able to achieve a high‐resolution spatial mapping of bow shock and magnetosheath processes and resolve spatial structures that are washed out when binned traditionally. In particular, we can resolve the shock overshoot, analyze the dominant forces acting at the shock, and obtain fine‐scale distributions of the bulk ion plasma magnetosheath forces and thermalization mechanisms. Magnetic tension and magnetic pressure gradient are compared. The ion pressure divergence at the shock is found to significantly vary in line with the solar wind temperature anisotropy. The dependency of the mirror mode instability on location and Mach number, and its implications for thermalization processes in the small Martian magnetosheath are investigated.

Learning locally dominant force balances in active particle systems

We use a combination of unsupervised clustering and sparsity-promoting inference algorithms to learn locally dominant force balances that explain macroscopic pattern formation in self-organized active particle systems. The self-organized emergence of macroscopic patterns from microscopic interactions between self-propelled particles can be widely observed in nature. Although hydrodynamic theories help us better understand the physical basis of this phenomenon, identifying a sufficient set of local interactions that shape, regulate and sustain self-organized structures in active particle systems remains challenging. We investigate a classic hydrodynamic model of self-propelled particles that produces a wide variety of patterns, such as asters and moving density bands. Our data-driven analysis shows that propagating bands are formed by local alignment interactions driven by density gradients, while steady-state asters are shaped by a mechanism of splay-induced negative compressibility arising from strong particle interactions. Our method also reveals analogous physical principles of pattern formation in a system where the speed of the particle is influenced by the local density. This demonstrates the ability of our method to reveal physical commonalities across models. The physical mechanisms inferred from the data are in excellent agreement with analytical scaling arguments and experimental observations.

Factors Influencing Consumer Loyalty: A Study in the Tech Industry

Since Apple’s 2010 release of the revolutionary iPhone 4, the brand has become a dominant force in the tech industry, fostering high customer loyalty through its integrated, secure ecosystem. This study aims to explore the factors driving Apple’s consumer loyalty in Malaysia, focusing on brand experience, brand innovativeness, social influence, perceived value, and brand trust. Primary and secondary data were collected, and a digital survey of 150 Malaysian Apple users provided insights into their loyalty determinants. Using regression analysis, the findings reveal that perceived value and brand trust significantly and positively impact consumer loyalty, while brand experience, brand innovativeness, and social influence show minimal influence. With an R-squared value of 0.596, the model suggests that nearly 60% of loyalty variance is explained by these factors, highlighting perceived value and trust as critical components. These results imply that Apple should prioritize enhancing perceived value and maintaining brand trust to strengthen consumer loyalty in competitive markets. Future research could explore additional factors like sustainability and community engagement to provide a fuller understanding of loyalty drivers in the tech industry

Green Synthesis of Fe2O3 Nanoparticles Using Eucalyptus globulus Leaf Extract on Pinus radiata Sawdust for Cationic Dye Adsorption.

The present study reports the synthesis of Fe2O3 nanoparticles on Pinus radiata sawdust (Fe2O3@PS) using a Eucalyptus globulus leaf extract. The morphology and structure of Fe2O3@PS were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and UV-Vis diffuse reflectance. The adsorption capacity of the system was evaluated by testing its ability to remove the Rhodamine B (RhB) dye. The optimization of the system was carried out using the Plackett-Burman design (PBD) and the response surface methodology (steepest ascent and the Box-Behnken design), which provided information on the main parameters affecting the adsorption process. The PBD results showed that the most important parameters for the removal of RhB using Fe2O3@PS were the removal time, the RhB concentration, and the initial pH of the system. The reusability of Fe2O3@PS under optimal conditions was tested and it was found to maintain its efficiency after five cycles of use. The efficiency and rate of RhB removal observed at pH values near 7.0 were found to be predominantly influenced by electrostatic interactions. In contrast, the analyses conducted at pH values near 8.3 exhibited reduced influence from electrostatic attractions, with π-π interactions and hydrogen bonds emerging as dominant forces. At pH values exceeding 8.3, all potential interactions between RhB and Fe2O3@PS exhibited diminished strength. This research provides valuable information on the formation of eco-friendly nanoparticles immobilized on a forest residue such as sawdust, which can effectively remove organic pollutants like RhB. This contributes to the valorization of resources and the search for solutions to water pollution.

Preparation and performance characterization of insoluble dietary fiber-alginate-pea protein ternary composite gels

Increased consumption of plant-based foods and better utilization of by-products could reduce the environmental impact of food consumption. In this study, IDF-SA-PPI ternary composite gels were prepared by a pH-controlled method by adding IDF (insoluble dietary fiber from bamboo shoot by-products) to pea protein isolate (PPI)-sodium alginate (SA) binary gels. The effects of pH and IDF content on the properties of PPI-SA binary gels were systematically investigated. Textural analysis, water retention measurements, and rheological studies showed that the IDF-SA-PPI hydrogels exhibited high gel strength, water retention capacity, and energy storage modulus. Fourier transform infrared (FTIR) spectroscopy indicated the appearance of new absorption peaks in the ternary composite gels, suggesting that hydrogen bonding and electrostatic interactions were the dominant molecular forces. Thermogravimetric analysis (TGA) demonstrated that the addition of IDF enhanced the thermal stability of the gels. Additionally, low-field nuclear magnetic resonance (LF-NMR) analysis revealed that IDF facilitated the conversion of free water to immobilized water within the gel matrix. The advanced ternary composite hydrogel was natural, sustainable, and robust, exhibiting significant potential as a multifunctional material across various applications. Additionally, it could enhance the utilization of bamboo shoot by-products in the food processing industry.

Valorization of apple pomace: Structural and rheological characterization of low-Methoxyl Pectins extracted with green agents of citric acid/sodium citrate

Traditional production of low-methoxyl pectin (LMP) is labor-intensive and environmentally harmful. This study explores using citric acid/sodium citrate as a green extractant for valorizing LMPs from apple pomace. Two types of pectin, AP-5 and AP-8, were extracted at pH 5.0 and 8.0, resulting in LMPs with methoxylation degrees of 42.33 % and 34.68 %, respectively. Monosaccharide composition and SEC-MALLS analysis revealed that APs are rich in arabinose side chains and contain heterogeneous fractions, while FTIR spectra confirmed their low-methoxyl structure. Compared to the commercial low-methoxyl pectin, APs exhibited higher critical pH but lower critical Ca2+ levels for acid- and Ca2+-induced gels, where hydrogen bonding and electrostatic interactions were the dominant intermolecular forces. Notably, AP-8 and AP-5 demonstrated superior stability in acid- and Ca2+-induced gels. Additionally, combined acidic and Ca2+ conditions enhanced the gel strength and stability of APs. These findings highlight the potential of APs in developing novel, particularly low-calorie, food products.

Impact of Cloud Computing in Finance Graphs

The financial sector, which serves as the backbone of the global economy, has undergone significant transformation with the adoption of cloud computing. This paper presents a detailed analysis of the connection between cloud computing and finance, drawing insights from an in-depth review of scholarly articles in the Scopus database. As financial institutions navigate evolving customer demands, regulatory challenges, and the need for innovation, cloud computing has emerged as a dominant force. It has ushered in a new era where competition is reshaped and operational efficiency is prioritized. The introduction highlights the critical role cloud computing plays in enhancing the financial landscape. Traditionally, financial institutions have been complex and resource-heavy systems, but they now face the pressing need for digital transformation. Cloud technology's scalability, flexibility, and cost-efficiency offer a guiding light for organisations aiming to reimagine their operations in this digital era. This paper examines not just the evolution but the profound shift in which cloud technology becomes a key driver in redesigning the way financial services are developed, delivered, and experienced. Keywords—cloud computing, AWS, machine learning, finance.

Abelmoschus manihot gum improves the water retention capacity of low-salt myofibrillar protein gels: Perspective on aggregation behaviour and conformational changes during heating

This study aimed to investigate the effect of Abelmoschus manihot gum (AMG) on the water retention capacity of low-salt myofibrillar protein (MP) gel by analysing its aggregation behaviour and conformational changes during heating (30–80 °C). The results revealed that AMG significantly increased the water holding capacity and facilitated the formation of a more uniform gel network structure in low-salt MP gel (P < 0.05). During the heat-induced gelation process, the solubility of low-salt MP significantly decreased, whereas its turbidity evidently increased as the level of added AMG increased (P < 0.05). Furthermore, the dynamic rheological behaviours indicated that low-salt MP-AMG gels underwent early denaturation and unfolded at 58 °C, finally forming an irreversible three-dimensional network at 80 °C. Moreover, adding AMG promoted α-helix-to-β-sheet transition in low-salt MP and decreased its fluorescence intensity during the heating process. Hydrophobic interactions and disulfide bonds were the two dominant forces governing the formation and maintenance of low-salt MP gel. The present study provides theoretical guidance for the production of novel low-salt healthy meat products.

Deciphering the evolution of thermodynamic properties and their connection to the global kinematics of high-speed coronal mass ejections using FRIS model

ABSTRACT Most earlier studies have been limited to estimating the kinematic evolution of coronal mass ejections (CMEs), and only limited efforts have been made to investigate their thermodynamic evolution. We focus on the interplay of the thermal properties of CMEs with their observed global kinematics. We implement the Flux rope Internal State model to estimate variations in the polytropic index, heating rate per unit mass, temperature, pressure, and various internal forces. The model incorporates inputs of 3D kinematics obtained from the Graduated Cylindrical Shell (GCS) model. In our study, we chose nine fast-speed CMEs from 2010 to 2012. Our investigation elucidates that the selected fast-speed CMEs show a heat-release phase at the beginning, followed by a heat-absorption phase with a near-isothermal state in their later propagation phase. The thermal state transition, from heat release to heat absorption, occurs at around 3($\pm$0.3) to 7($\pm$0.7) $R_\odot$ for different CMEs. We found that the CMEs with higher expansion speeds experience a less pronounced sharp temperature decrease before gaining a near-isothermal state. The differential emission measurement (DEM) analysis findings, using multiwavelength observation from Solar Dynamics Observatory/Atmospheric Imaging Assembly, also show a heat release state of CMEs at lower coronal heights. We also find the dominant internal forces influencing CME radial expansion at varying distances from the Sun. Our study shows the need to characterize the internal thermodynamic properties of CMEs better in both observational and modeling studies, offering insights for refining assumptions of a constant value of the polytropic index during the evolution of CMEs.

Size-based separation of fine mineral particles using inertial microfluidics: A case of jarosite and anglesite

Many metal phases in industrial hazardous waste coexist as fine mineral particles (FMPs, with particle sizes of 0.01 μm–10 μm) in a physical mixture, making conventional methods unable to achieve separation. Advanced microfluidics has demonstrated its potential in the separation of FMPs, as exemplified by jarosite and anglesite. Our study innovatively proposed an inertial microfluidic method for the separation of FMPs by force difference in curved microchannels, thus produced two distinct migration behaviors and subsequent separation. In addition, the computational fluid dynamics (CFD) simulation model was constructed to predict and analyze the migration behavior and separation trend of FMPs through flow field simulation and particle trajectory tracking. The results indicated that 2.1 μm and 3.6 μm small particles migrated to the outer outlet of the microchannel due to the dominant Dean vortex force, while 7.2 μm and 9.4 μm large particles migrated to the inner outlet relying on inertial focusing. At a flow rate of 1.2 mL/min, the separation efficiency of 3.6 μm jarosite and 9.4 μm anglesite has achieved a leap from 0 % to 60.7 %. This discovery provided feasibility and insights into the application of microfluidic technology for particle separation, and offered enormous potential for practical iron residue treatment.

Extremes and Short‐Term Fluctuations in Coastal Ocean Acidification and Hypoxia

AbstractIn Eastern boundary upwelling systems, such as the California Current System (CCS), seasonal upwelling brings low oxygen and low pH waters to the continental shelf, causing ocean acidification and hypoxia (OAH). The location, frequency, and intensity of OAH events is influenced by a combination of large‐scale climatic trends, seasonal changes, small‐scale circulation, and local human activities. Here, we use results from two 20‐year long submesoscale‐resolving simulations of the Northern and Southern U.S. West Coast (USWC) for the 1997–2017 period, to describe the characteristics and drivers of OAH events. These simulations reveal the emergence of hotspots in which seasonal declines in oxygen and pH are accompanied by localized short‐term extremes in OAH. While OAH hotspots show substantial seasonal variability, significant intra‐seasonal fluctuations occur, reflecting the interaction between low‐ and high‐frequency forcings that shape OAH events. The mechanisms behind the seasonal decreases in pH and oxygen vary along the USWC. While remineralization remains the dominant force causing these declines throughout the coast, physical transport partially offsets these effects in Southern and Central California, but contributes to seasonal oxygen loss and acidification on the Northern Coast. Critically, the seasonal decline is not sufficient to predict the occurrence and duration of OAH extremes. Locally enhanced biogeochemical rates, including shallow benthic remineralization and rapid wind‐driven transport, shape the spatial and temporal patterns of coastal OAH.

Modeling water infiltration into soil under fractional wettability conditions

The heterogeneous distribution of water-repellent materials at the soil surface causes a phenomenon known as fractional wettability. This condition frequently triggers destabilization of the wetting front during water infiltration, resulting in the formation of fingered bypass flow. However, few analytical tools exist to understand and model this behavior. Moreover, existing infiltration models fail to fit certain infiltration curves that exist in experimental data. For these reasons, we introduce a novel infiltration model to simulate water infiltration under fractional wettable conditions. We conceptualize the soil surface as a composite of two distinct portions: a water-repellent fraction, where hydrophobic effects impede water infiltration, and a wettable fraction, where capillarity and gravity are the dominant forces controlling the process. The new model was validated using a dataset comprising infiltration data from 60 field measurements. Additionally, validation was performed using 660 analytically generated infiltration curves from six synthetic soils with varying textures. This innovative approach enabled us to account for the combined influence of these two fractions and to enhance the interpretation of infiltration curves with mixed shapes, which other common methods are unable to reproduce.

Binary collision dynamics of immiscible Newtonian and non-Newtonian fluid droplets

This experimental and theoretical study is devoted to the investigation of head-on collisions of two immiscible Newtonian and non-Newtonian droplets. The density of the two droplets is similar, and the viscosity of 0.3% carboxymethyl cellulose droplet is slightly larger than 10 cSt silicone oil. The sizes and relative velocity of the colliding droplets close to the point of impact are measured by means of image processing. The deformed states after the impact and their evolution with time are studied by experimental visualization and the energy evolution with time are discussed by numerical results. The accuracy of the two-dimensional axisymmetric three-phase flow computational model is validated. We study the effects of collisions of non-Newtonian droplets with Newtonian droplets and the subsequent retraction kinetics. Droplet “cannibalization” is commonly observed: after collision and spreading, the droplet retracts rapidly, resulting in a Newtonian droplet wrapping around a non-Newtonian droplet. We show the whole process of droplet collision captured by a high-speed camera and obtain the cloud and velocity vector maps of the droplets by numerical simulation. The droplet wrapping phenomenon is produced by different three-phase interfacial tensions and viscosities. We delineate the different phases of the collision process and discuss the dominant forces in each phase. We calculate the energy evolution of the spreading phase and use it to derive a predictive model for the dimensionless maximum spreading diameter and spreading time.