bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of shear creep damage model of slope rock mass under the influence of coupled damage effects (DBSM)
Authors: Wang Zeqi , Hu Bin , Li Jing , Zhong Zhuoxi , Zhang Xiangyu 
Published: October 2024

Abstract
This article reveals the evolution law of shear creep damage of carbonaceous shale (weak interlayer of slope) under dynamic load from a mechanical perspective by combining indoor experiments and theoretical research. Firstly, a coupled damage variable D

BSM
was established for the initial damage D

0
and dynamic disturbance shear creep damage D

BS
of rock mass based on the theory of damage mechanics. Secondly, according to the fractional calculus operator theory and considering the influence of coupled damage variable D

BSM
on the viscosity coefficient of rock mass in the viscoelasticity and viscoplasticity creep stages, a shear creep damage model of rock mass was established. At the same time, combined with the shear creep test data under the influence of dynamic loads, the damage evolution law of shear creep in carbonaceous shale (weak interlayer of slope) was revealed, and the accuracy of the established shear creep damage model was verified. Finally, the damage evolution law of carbonaceous shale was quantitatively analyzed. Results show that: The shear creep damage model established in this article has unique advantages. The greater the initial damage, the more likely shear creep failure is to occur under the influence of dynamic disturbance and shear creep loads. Dynamic disturbance accelerates the damage of weak interlayers of slope. The cumulative coupling damage of carbonaceous shale (D

ma
≤0.18) under dynamic disturbance and multi-stage shear creep loads exhibits an S-like evolution pattern. The shear creep damage mechanism of carbonaceous shale is characterized by obvious initial damage effect, dynamic disturbance damage effect, and stress response characteristics.
Design and performance exploration of Pb-free low-cost all-inorganic perovskite-inspired CuAgBi2I8 solar cells: theoretical approach
Authors: Zhang Kun , Xing Yupeng , Du Zuyan , Ding Renjie , Yuan Yujie , Bi Jinlian , Li Wei 
Published: October 2024

Abstract
Organic–inorganic halide perovskites have demonstrated great potential for photovoltaic applications owing to their unprecedented optoelectronic properties and low manufacturing costs. However, the commercialization of this technology is hindered by its thermal instability and inherent toxicity. In this study, SCAPS-1D simulation software was used to study the performance of solar cell based on CuAgBi2I8, which is a novel inorganic non-toxic lead-free perovskite-inspired material. Different electron transport layers (TiO2, In2S3, ZnO, Zn0.75Mg0.25O,SnO2 and SrTiO3) and hole transport layers (CuI, PEDOT:PSS, CuSCN and Cu2O) were studied, our research indicated that SnO2 and NiO formed the optimal combination. Further analysis revealed that the optimal absorption layer thickness was 900 nm, the absorption layer doping concentration should be less than 1 × 1013 cm−3 and the defect density should be less than 1 × 1014 cm−3. The optimal thickness of SnO2 and NiO was 30 nm, the optimal doping concentration of SnO2 and NiO was 1 × 1020 cm−3, the defect density of absorber layer/SnO2 and absorber layer/NiO interfaces should be less than 1 × 1012 cm−3, C was the optimal back electrode material. Consequently, the optimal device configuration was identified as FTO/SnO2/CuAgBi2I8/NiO/C, the efficiency was improved from original 2.76% to 19.10% after above optimization. These results indicate that solar cell with CuAgBi2I8 as the absorber layer is a potential alternative to organic–inorganic lead halide perovskite solar cells.
Research on triboelectric-piezoelectric energy harvesting technology driven by wind
Authors: Li Biao , Shao Jiaru , Zheng Zijun , Yang Yu , Zheng Bolin 
Published: October 2024

Abstract
In this paper, the triboelectric-piezoelectric energy harvesting technology is systematically studied. Piezoelectric materials and friction materials are combined to form integrated piezoelectric plates. A wind energy harvester based on integrated piezoelectric plates is designed and its performance is evaluated. Experimental results reveal that the maximum peak voltage for piezoelectricity and triboelectricity are 38.91 V and 12.4 V, respectively. Notably, the output voltage of the integrated piezoelectric plate is observed to increase by 31.87% compared to the original piezoelectric plate. The maximum piezoelectric peak voltage of the overall wind energy harvester is 145.23 V, and the maximum triboelectric peak voltage is 43.25 V, which can provide continuous power for small components. The integrated piezoelectric plates demonstrates a substantial enhancement in the original piezoelectric output voltage, indicating significant application potential.
A multi-medical image encryption algorithm based on ROI and DNA coding
Authors: Teng Lin , Liu Yang , Wang Yafei 
Published: October 2024

Abstract
With the rapid development of information technology in the field of electronic medicine, the confidentiality of medical images has received increasing attention. The research on the encryption of multiple medical images holds greater practical significance. In this paper, the encryption algorithm is designed specifically for the region of interest (ROI) in medical images. Different techniques and methods are used to encrypt ROI and region of non-interest (RONI) respectively. By combining improved Zigzag scrambling, DNA coding, and the Fisher-Yates shuffle, we place an emphasis on protecting the ROI, and achieve secure encryption for medical images of any number and size. In addition, a new one-dimensional chaotic system S-LCS with larger parameter space and better chaotic properties is proposed. In this encryption scheme, the information about the ROI serves as the secret key, and the initial values and parameters of the chaotic sequences required for encryption are calculated from this key. This strengthens the relationship between the key and the plaintext, enhancing the security of the key. Through testing and comparative analysis, it has been found that the encryption algorithm has high enough security, can resist various attacks, and has high encryption efficiency in the application scenario of multi-image encryption.
Renormalizable quantum theory of gravity
Authors: Borodikhin V N 
Published: October 2024

Abstract
The renormalizable quantum theory of gravity is constructed based on Vector Theory of Gravity. The possibility of the existence of spin two gravitons within the framework of this theory is shown. A number of different quantum gravitational effects are considered. The parameters of the post-Newtonian approximation of the Vector Theory of Gravity have been also found.
Evolution of the Universe with quintessence model in Rastall gravity
Authors: Singh J K , Singh Akanksha , Ghosh Sushant G , Maharaj Sunil D 
Published: October 2024

Abstract
We investigate the Universe’s evolution within the framework of Rastall gravity, which is an extension of the standard ΛCDM model. Utilizing a linear parametrization of the Equation of State (EoS) in a Friedmann-Lemaître-Robertson-Walker (FLRW) background, we constrain the model parameters through analysis of cosmic chronometers (CC), Pantheon, Gold, Gamma Ray Burst (GRB), and Baryon Acoustic Oscillations (BAO) datasets, as well as their joint analysis, under 1σ and 2σ confidence levels, considering the Rastall parameter λ. The constrained parameters are then used to compare our model with the standard ΛCDM model. Our findings include a detailed examination of the model’s physical interpretations and demonstrate the potential for an accelerating universe expansion in later times, aligning with the observed behavior of dark energy.
Hydrodynamic heat conduction based on eigenvalues and eigenvectors of the normal collision operator
Authors: Xu Mingtian , Wei Tao 
Published: October 2024

Abstract
Although the Guyer-Krumhansl equations has opened up the study of phonon hydrodynamics in ultra-low temperature and low dimensional non-metallic crystals, it still cannot explain the high thermal conductivity of low dimensional non-metallic materials in adiabatic environments. In this work, the analytical solution of the linear Boltzmann transport equation with the Callaway approximation is obtained by expanding the nonequilibrium distribution function into a series of the orthogonal eigenvectors of the normal-process collision operator. By assuming the normal scatterings dominate the heat conduction in an anisotropic non-metallic crystal allowing the different branches of the phonon frequency spectrum having different group velocity, the macroscopic energy and momentum balance equations are developed for describing the phonon hydrodynamic transport. For an isotropic and dispersionless system, these balance equations reduce to the improved Guyer-Krumhansl equations. The thermal conductivity in these balance equations includes not only the contribution of the resistive scatterings, but also the contribution of the normal scatterings. Therefore, the improved Guyer-Krumhansl equations is capable for explaining the high thermal conductivity of suspended graphene, which is validated by the experimental results. Finally, the improved Guyer-Krumhansl equations is employed to derive the occurrence condition of the second sound in suspended single-layer graphene.
Correlation analysis of the long-term interplay of cosmic rays, solar activity, and solar irradiance
Authors: Sedrati Rafik , Bouchachi Dallel , Attallah Reda 
Published: October 2024

Abstract
This study presents a comprehensive analysis of the interplay between solar irradiance variability, solar activity, and cosmic rays over an extensive period from 1950 to 2023, well beyond the scope of previous research that focused on fewer solar cycles. Besides, using a robust dataset, we investigated the correlation between solar activity, represented by sunspot numbers, and the total solar irradiance, alongside the influence of cosmic rays. In this respect, our methodology incorporated sophisticated statistical techniques, including correlation analysis and linear regression, in order to elucidate the complex relationships among these variables. We identified a strong positive correlation between solar activity and total solar irradiance

r
≈
+
0.95

, together with a significant anti-correlation between solar activity and cosmic rays

r
≈
−
0.72

as well as cosmic rays and total solar irradiance

r
≈
−
0.67

. As a consequence, the results of this study offer new insights into the long-term solar influence on climate through cosmic rays, enhancing our understanding of the Sun-Earth dynamic over prolonged periods. Likewise, the extended time series and the analytical framework developed in this study pave the way for further research into related phenomena, including the effects of cloud cover and potential links between cosmic rays and climate change.
The hydrodynamics of inverse phase transitions
Authors: Barni Giulio , Blasi Simone , Vanvlasselaer Miguel 
Published: October 2024

Abstract
First order phase transitions are violent phenomena that occur when the state of the
universe evolves abruptly from one vacuum to another. A direct phase transition connects a
local vacuum to a deeper vacuum of the zero-temperature potential, and the energy difference
between the two minima manifests itself in the acceleration of the bubble wall. In this sense, the
transition is triggered by the release of vacuum energy. On the other hand, an inverse
phase transition connects a deeper minimum of the zero-temperature potential to a higher one, and
the bubble actually expands against the vacuum energy. The transition is then triggered purely by
thermal corrections. We study for the first time the hydrodynamics and the energy budget of
inverse phase transitions. We find several modes of expansion for inverse bubbles, which are
related to the known ones for direct transitions by a mirror symmetry. We finally investigate the
friction exerted on the bubble wall and comment on the possibility of runaway walls in inverse
phase transitions.
Effect of water absorption on thickness swelling of natural fiber reinforced styrene acrylonitrile composite
Authors: Tamta Nisha , Palsule Sanjay 
Published: October 2024

Abstract
Applications of natural fiber-reinforced polymer composites span diverse industries, including automotive, construction and consumer goods. The nature of natural fiber is hygroscopic, so they have tendency to absorb water and that results in the thickness swelling of natural fiber reinforced polymer composites. This study investigates the effect of water absorption on thickness swelling of natural fiber reinforced functionalized styrene acrylonitrile composites as well as the mechanism of thickness swelling.
Performance Evaluation of Ternary Blended Cement Concrete with Manufactured Sand using Alccofine and Zeolite in different replacement levels
Authors: Vivek Kumar C , Vasa J S S K , Rishabalaxmi M , Shivraj S J , Ganesh M 
Published: October 2024

Abstract
Concrete is the most adaptable, extensively researched, and reliable building material available worldwide. minimizing the adverse impacts of the construction sector on the ecosystem as it exists today. Manufactured sand (MS) or manufactured fine aggregate (MFA) is made by crushing larger aggregate pieces into aggregate particles the size of sand. Manufactured sand is widely employed in the construction industry as a substitute for river sand, mostly for making concrete mixtures and mortar. By utilizing less cement in the concrete in the current study, Alccofine 1203 and Zeolite were partially substituted for cement, making the concrete a more sustainable material. Zeolite (ZL) is produced when ash and rock layers that simultaneously form following a volcanic eruption are used in concrete as a substitute for Portland cement, making up 4% of the total mass. The utilization of manufactured sand has recently started, with several construction projects taking place in various countries. In this experiment, alccofine (AF) 1203 is being used in M40-grade concrete in amounts ranging from 2% to 20% as a cement substitute. To create Ternary Blended Cement Concrete (TBCC), cement, 4% zeolite, and 50% MS are used in place of natural sand.
Microstructural and mechanical Characterization of friction stir processed A356 alloy
Authors: Kumar Harikishor , Prasad Rabindra , Kumar Parshant 
Published: October 2024

Abstract
Being solid in nature, friction stir processing (FSP) is considered as most efficient and effective tool to eradicate the shortcomings associated with cast products. In the present investigation, FSP has been utilized to refine the cast alloy (A356) and see its effect on mechanical properties. It carries a non-consumable tool which rotates at high RPM, creating a lot of stirring action that breaks up dendritic structure (α-Al). It also smooths out acicular Si-particles. This procedure guarantees that silicon particles are evenly distributed over the treated plate’s stirred zone. The treated alloy exhibits a significant improvement in hardness and tensile strength due to the breaking of dendritic structure (α-Al) and even sputtering of particles.
Characteristics of light emission and wear behaviour of a reinforced composite material made of basalt and jute for optimum parameters
Authors: Pavan Kumar T , Udaya Kiran C , Chennakesava Reddy A 
Published: October 2024

Abstract
This article presents a study conducted on the characterization and preparation of jute/basalt reinforced composites as a novel polymer matrix. The material is created using hand layup process, taking into account the orthogonal L27 series for 3 levels and 4 method parameters. Tensile and hardness values are computed, and the ideal composition is examined using the Taguchi technique. The 27 experiments yielded different optimum parameters, and they are then duplicated through production and experimentation. The hardness number is 91.52 and the tensile strength value is recorded as 133.94 Mpa. Additional studies are carried out on the ideal parameters to determine the light emissivity using the percentage degradation of opacity obtained from opacity tests. A wear test is also carried out to determine the wear behaviour of the ideal parameters both before and after test circumstances.
Myricetin-Capped Biosynthesis of Silver-Selenium Nanoparticles and its Anticandidal Activities
Authors: Hinaz Fathima , Venkatesan Lekha Sree , Duraisamy Revathi 
Published: October 2024

Abstract
Bioflavonoid myricetin-capped silver-selenium nanoparticles (Myr-AgSeNPs) are biosynthesized successfully by a green approach. The physicochemical properties of the biosynthesized Myr-AgSeNPs were characterized using SEM, EDS, and FTIR techniques. The biosynthesized Myr-AgSeNPs are appeared as combined spherical and rod in form with the average size of 100 to 600 nm in size. The EDS micrograph confirms the appearance of Se and Ag with carbon and oxygen atoms, which suggests that the biosynthesized particles have high purity. The appeared carbon and oxygen atoms correspond to the organic molecules (myricetin) attached on the surface of the nanoparticles. The FTIR results indicates that the functional groups of myricetin attached on the surface of the AgSeNPs, which confirms that the myricetin coated on the biosynthesized nanoparticles. The anticandidal activity of the biosynthesized Myr-AgSeNPs was examined based on zone of inhibition (ZOI) studies on agar well-diffusion method. The results shows that the anticandidal activity of Myr-AgSeNPs against the tested candidiasis-causing Candida albicans is almost equal to the standard antibiotic fluconazole. Finally, this study suggests that Myr-AgSeNPs might be good candidate for the effective treatment of candidiasis-causing by C. albicans.
A Review of the Mechanical Properties of Biochar-Reinforced Aluminium 7075/SiC Composites
Authors: Guru Mahesh Gadham Setty , Vijayan D.S. , Sivakumar K. , Kavitha N. , Arumugam Vengatesan , Damodara Reddy A. , Rajesh S. 
Published: October 2024

Abstract
In the current research, we analyse various mechanical and machining characteristics of SIC/Al 7075 aluminium composites. These alloys exhibit twinning effects at high temperatures, which reduce their usage for functional applications. To overcome this, we add several reinforcements such as carbide and oxide groups, as well as ceramic strengthening particulates and biochar reinforcement. Micron-sized reinforcement is commonly utilized for several applications, thus improving the percentage of reinforcement to a maximum because it promotes higher hardness and toughness for machining characteristics. In this regard, we replace nano-sized strengthening particulates for such applications. We infer that the percentage of reinforcement of such ceramic particles cannot be increased due to particle agglomeration. Considering this as a major drawback, we illustrate a study on nano-sized reinforcement on Al7075 alloy with different processing methods in this investigation. We also carry out the modification of biochar.
Experimental Evaluation Of Quasi-Static Strength Of Composite Laminate With Nano Particles
Authors: Fazle Rabbi Md , Balaji G , Jensin Joshua J , Singh Dalbir , Madhanraj V , Ezhilmaran G , Qamar Shabahat Hasnain 
Published: October 2024

Abstract
This research project delves into the strategic augmentation of composite laminates for aerospace and structural applications, recognizing the pivotal role of weight in material design. Employing intricate handloom weaving techniques and precision hand layer methods, three distinct composite laminates are crafted, each distinguished by varying concentrations of aluminum nanoparticles/nano oxides such as 1%, 3%, and 5%. Rigorous quasi-static loading protocols within a Universal Testing Machine (UTM) reveal a discernible enhancement in impact strength for the 3% nanoparticle composite laminate compared to counterparts with 1% and 5% nanoparticle concentrations. This improvement is attributed to the uniform nanoparticle dispersion and closely spaced fiber architecture within the laminate. Beyond the laboratory, this strategic integration of nanoparticles demonstrates promise in optimizing material properties, with potential applications in advanced technologies such as bulletproofing. This study, characterized by meticulous precision and scientific rigor, contributes nuanced insights to the field of composite material science.
Uncertainty Quantification for Digital Twins in Smart Manufacturing and Robotics: A Review
Authors: Battula S , Alla S N , Ramana E V , Kiran Kumar N , Bhanu Murthy S 
Published: October 2024

Abstract
This paper elaborates on the large number of Uncertainty Quantification (UQ) techniques that have been proposed to enhance the reliability and the fidelity of Digital Twins that are increasingly finding applications in domains like Robotics and Smart Manufacturing. Digital twins are virtual duplicates or virtual models of a physical asset; they use advanced techniques such as data analytics and simulation-driven methods. However, the development and use of these advanced systems are plagued by a host of uncertainties, which are mainly introduced from sensor noise, intermittent connectivity, biases from data processing, and model abstractions and simulation stochasticity. Such uncertainties can be quantified by methods such as frequentist statistics, interval analysis, Bayesian inference, and random sampling. The mapping is important in gaining insights into these UQ methods and their associated advantages and limitations and the mitigation guidelines are to be used throughout the Digital Twin pipeline. UQ at its core involves real-time adaptive control in dynamically changing environments that leverage state awareness towards responsive action within predictive control models and feedback systems. In addition, machine learning algorithms support the ability to make better decisions from the identification of patterns in historical data to make plans for responsive trajectories of robots. UQ further allows the collaboration of human and machine, giving early warnings on anomalies and risks that enhance visibility which further fosters coordination and communication during disruptive situations. Robust development of digital twins for robotics and manufacturing relies on integrated UQ practices. The current review provides best practices, insights, and guidelines on the application of UQ across modeling, control strategies, and collaborative workflows aimed at delivering actionable and reliable insights from digital twin simulations, analytics, and decision support.
Finite Element Analysis of Lathe Machine Chuck for Vibration Stability
Authors: Gaikwad Suraj , Shaikh Aamir M. , Kubade Pravin R. 
Published: October 2024

Abstract
Torsional vibration causes failure of the lathe chuck, which can cause hazardous situations on the shop floor. The design of the lathe chuck has a rugged structure which causes cascading failure of lathe spindle assembly. However, the operational stability also decreases. This study aims to obtain the effect of dynamics characteristics like natural frequency of the lathe machine chuck and to propose an effect of modified design of the lathe machine chuck through the target of improving the performance of the lathe chuck and minimizing the vibration effect on the lathe chuck. Also observing the total deformation in the model. A finite element model of the lathe machine chuck has been constructed in the mode analysis to regulate the dynamic properties, deflection and instability of the system. The three-dimensional solid model has been constructed for analysis. In this study, the use of ANSYS workbench software is helpful to solve the case and obtain the deformation.