bluuebunny/crossref_metadata_2025_split huggingface dataset:
Progression of total training volume in resistance training studies and its application to skeletal muscle growth
Authors: Hammert William B , Kataoka Ryo , Yamada Yujiro , Song Jun Seob , Kang Anna , Spitz Robert W , Loenneke Jeremy P 
Published: August 2024

Abstract
Progressive overload describes the gradual increase of stress placed on the body during exercise training, and is often quantified (i.e. in resistance training studies) through increases in total training volume (i.e. sets × repetitions × load) from the first to final week of the exercise training intervention. Within the literature, it has become increasingly common for authors to discuss skeletal muscle growth adaptations in the context of increases in total training volume (i.e. the magnitude progression in total training volume). The present manuscript discusses a physiological rationale for progressive overload and then explains why, in our opinion, quantifying the progression of total training volume within research investigations tells very little about muscle growth adaptations to resistance training. Our opinion is based on the following research findings: (1) a noncausal connection between increases in total training volume (i.e. progressively overloading the resistance exercise stimulus) and increases in skeletal muscle size; (2) similar changes in total training volume may not always produce similar increases in muscle size; and (3) the ability to exercise more and consequently amass larger increases in total training volume may not inherently produce more skeletal muscle growth. The methodology of quantifying changes in total training volume may therefore provide a means through which researchers can mathematically determine the total amount of external ‘work’ performed within a resistance training study. It may not, however, always explain muscle growth adaptations.
Drift instabilities driven by slab ion temperature gradient in suprathermal plasmas
Authors: Guo Ran 
Published: August 2024

Abstract
The drift instabilities driven by the slab ion temperature gradient (ITG) in Kappa-distributed plasmas are investigated by the kinetic method. The linear dispersion relation is given in an integral representation involving only the standard plasma dispersion function. The wave frequency and growth rate are derived without the density inhomogeneity. Numerical solutions of the dispersion equation are conducted to show the different effects of the suprathermal ions and electrons. We find that the suprathermal ions can enhance the instability in large wavenumbers but suppress it in small wavenumbers. Thus, the suprathermalization of ions could be one of the factors leading to a lower limit of wavenumbers for the ITG instabilities. Besides, the numerical calculations also imply that the thermal speed ratio affects the intensities of the suprathermal effects. Finally, in the presence of density inhomogeneity, the ITG instability boundary is numerically analyzed.
Temperature-dependent electrical investigations and explication of the equivalent operational Warburg impedance by Bode and Nyquist plots of Yb3+ doped silicate glass
Authors: J Gracie P , D Geetha 
Published: August 2024

Abstract
Multi-component silicate glass doped with Yb3+ and synthesized by the sol–gel technique was subjected to broadband dielectric spectroscopy to determine the energy storage and electrode functionalities. Raman spectroscopy confirms the existence of the silicate and phosphate tetrahedra, with the structural alterations by the non-bridging oxygens to form a compact glass network. Bode and Nyquist impedance plots suggest the suitability of the glass as electrodes, whose functionality is simulated to a circuitry constituting two parallel combinations of a resistor and constant phase element each, and in series with Warburg diffusion impedance element (W). The glass evinces a high conductivity and corrosion resistance, suggestive of electrodes in batteries for energy storage. The inception of W on the low-frequency domain indicates significant space charge polarization, and augmented dielectric constants. The capacitance of 0.9 nF at 100 Hz demonstrates its potentiality for multi-layer dielectric substrates in radio frequency capacitors to enhance electrical energy storage.
Chemical and green synthesized Co/Ni-doped hematite nanoparticles for enhancing the photocatalytic and antioxidant properties
Authors: Kumar Pankaj , Kaushik Ajeet , Kumar Sunil , Thakur Naveen 
Published: August 2024

Abstract
This research focuses on developing environmentally friendly and economically viable Co/Ni-doped hematite nanoparticles (HNPs) through both chemical and green synthesis methods and evaluated their potential for biomedical and environmental applications. The chemical synthesis employs polyvinylpyrrolidone (PVP), while the green approach utilizes Azadirachta indica (A. indica) leaf extract as a stabilizing agent. Co/Ni-doped HNPs are crystalline size ranging from 14 to 21 nm, morphology analysis revealed that the NPs exhibited a quasi-spherical, with an average particle size ranging from 15.98 to 25.91 nm, and dopants confirmed to contain by the XPS spectra. VSM study explains magnetic parameters, coactivity, residual magnetism, and magnetization. A. indica plants contain quinones, saponins, glycosides, alkaloids, and flavonoids. Characterization of the nanoparticles reveals optimized Co/Ni-doped HNPs with enhanced photocatalytic activity. These nanoparticles exhibit a remarkable 93%–95% degradation of UV-reactive dyes (methyl orange and methylene blue) within 90 min, attributed to structural and surface modifications that improve light absorption and enhance charge separation. The study concludes that green-synthesized Co/Ni-doped HNPs outperform chemically synthesized counterparts as superior photocatalysts. Additionally, antioxidant evaluations using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and nitric oxide (NO) assays suggest significant antioxidant capabilities. A high scavenging activity percentage, ranging from 83% to 88%, was observed, which increased with higher concentrations of the synthesized Co/Ni-doped HNPs making these nanoparticles suitable for biomedical and environmental applications that require a magnetic system. In this study, the IC50 values for the antioxidant activity of chemically and green synthesized Co/Ni-doped hematite nanoparticles against the DPPH/NO assay were calculated to be 18.33 μg ml−1 and 16.09 μg ml−1, respectively. The research highlights the multifunctional properties of Co/Ni-doped HNPs, addressing the demand for tailored inorganic magnetic nanoparticles with minimal ecological impact.
Enhancement of energy storage and pyroelectric properties of (Na0.5Bi0.5)TiO3-SrTiO3-BaTiO3 ceramics by addition of (Ba0.9B0.1)TiO3 glass-phase
Authors: Ezzeldien Mohammed , Mohamed W S , Al-Qaisi Samah , Ameen Ismail Gad , Mahmoud Abd El-razek 
Published: August 2024

Abstract
The present study introduces a novel analysis of the effect of the glass phase on the energy storage and the pyroelectric properties of 0.65(Bi0.5Na0.5)TiO3-0.25SrTiO3–0.1BaTiO3 (abbreviate NBT-ST-BT) lead-free ceramics. The glass phase was prepared by melt-quenching of (Ba0.9B0.1)TiO3 (BBT) calcined powder. Different content of BBT glass phase was introduced into the ceramic matrix [(1-x)(NBT-ST-BT)—x(BBT)] (x = 0.0, 2.5, 5, 7.5 and 10%) solid solution. The crystal structure shows rhombohedral and orthorhombic coexistence phases, increasing the R-phase volume fraction by increasing BBT glass content. The grain size was suppressed to a sub-micrometer by increasing the BBT glass amount, denoting the enhanced dielectric breakdown strength (BDS). The most significant recoverable energy storage density (Wrec = 2.5 J cm−3) with the highest energy storage efficiency (η ∼ 87%) has been obtained at 200 kV cm−1 of BBT 5%. The variation in Wrec of the optimum sample is less than 4% from 25 °C to 150 °C, indicating the high thermal stability of energy storage properties. The pyroelectric coefficient (PE) was estimated using an approximate numerical method of differentiating remnant polarization Pr concerning temperature. Adding the BBT glass phase enhanced the pyroelectric properties and figure of merit (FOM). The FOM increased from 7 × 10−10 to 8 × 10−10 C/cm2. °C at T = 150 °C when glass content increased from 0.0 to 0.1. These results prove that the addition of the BBT glass phase resolves the difference between high energy storage properties and lower sintering temperatures of ceramic materials, enhancing the pyroelectric properties for practical applications.
On relativistic hydrodynamics: bernoulli process equations
Authors: Güémez J , Mier J A 
Published: August 2024

Abstract
A relativistic covariant description of a Bernoulli process is presented in terms of a set of two fundamental equations: Newton’s second law and the first law of thermodynamics. The set is first obtained in the rest frame of the process S, then in a frame

S

¯

moving at a constant velocity relative to S. It is shown that the set is covariant under Lorentz transformation, and reduces to the classical equations at the low-speed limit.
Coherent superposition of states in multi-state systems using adiabatic pulses split by a phase jump
Authors: Faraji Tohid , Amniat-Talab Mahdi , Saadati-Niari Maghsoud 
Published: August 2024

Abstract
The generation of arbitrary preselected coherent superposition of states in multi-state systems using adiabatic pulses split by a phase jump has been investigated. We consider a linkage pattern that includes a ground state and N excited states so that the ground state is coupled to the excited states using N pulses with a chirped detuning. In this scheme, time-dependent Rabi frequencies and detuning are used in two steps, and in each step, it is assumed that the Rabi frequencies have the same time dependence. Also, the Rabi frequencies in the second step have a phase jump compared to the first step, and the amount of this phase jump is the same for all pulses. It is shown that by properly adjusting the amount of phase jump in the second step and also the maximum value of Rabi frequencies in both steps, an arbitrary coherent superposition of all states can be created. In this study, the maximum values of Rabi frequencies and detuning are considered to be large enough to establish the adiabatic passage condition, and it is numerically shown that this scheme is insensitive to the change of the maximum value of Rabi frequencies and detuning.
A novel reduced-order model reference adaptive control approach with high-frequency oscillation suppression
Authors: Tian Tingting , Hou Xiaorong , Yan Fang 
Published: August 2024

Abstract
High-frequency oscillations may occur in the control signal when the adaptive gain is too large, which will adversely affect the robustness of the model reference adaptive control (MRAC) law and potentially induce system instability. To tackle this challenge, we introduce a reduced-order MRAC approach based on a modified scalar update law that includes a modification term to filter out high-frequency content for the multi-input multi-output (MIMO) nonlinear dynamical systems. This modification significantly reduces the high-frequency oscillations, allowing a controller with a high adaptive gain to achieve fast adaptation. In addition, with this reduced-order adaptive control approach, only two parameters need to be updated online, thus substantially reducing the overall computation burden. Furthermore, we demonstrate that the proposed reduced-order MRAC approach guarantees the Lyapunov asymptotic stability of the system error dynamics. Simulation results are conducted to validate the electiveness of the proposed method.
Impact of rotation on a micro-elongated thermoelastic solid subjected to a load from an overlying liquid layer according to various theories
Authors: Othman Mohamed IA , Eraki Ebtesam EM , Ismail Mohamed F 
Published: August 2024

Abstract
The objective of this study is to examine how the presence of a fluid layer affects thermoelastic behavior of a micro-elongated solid undergoing rotation utilizing the coupled theory (CT) doesn’t contain any relaxation times, the Lord-Shulman (L-S) theory also the model of duple-phase-lag (DPL). Normal mode analysis has been utilized to transform partial differential equations to ordinary differential equations. Subsequently, numerical computations have been performed, and the outcomes have been visualized through graphical representation. In both with and without rotation, a comparison is made among the coupled theory, the (L-S) theory, and the (DPL) model. It is watched that rotation significantly impacts all physical quantities, demonstrating a substantial influence.
Novel CdFe2O4 nanoparticles facile synthesis and their applications towards practical ammonia detection: an effect of annealing
Authors: Shkir Mohd , Ahmad Nafis , Alshahrani Thamraa , Ahmad Zubair , AlFaify S 
Published: August 2024

Abstract
Cadmium ferrite (CdFe2O4) nanoparticles were synthesized via a simple co-precipitation method, and the effect of annealing temperature over the prepared samples’ structural, morphological, and optical properties was analyzed by varying the temperatures 700, 800, and 900 °C. The x-ray diffraction (XRD) studies revealed that the prepared samples are highly crystalline in nature and belong to a cubic spinel crystal structure, and the crystallite size increases from 32 to 59 nm with respect to the increasing temperature. The surface morphology of the ferrite samples showed the uniformly distributed highly agglomerated particles with larger voids for the ferrite nanoparticles annealed at 900 °C. Optical properties of the prepared CdFe2O4 samples were carried out by diffused reflectance spectroscopy (DRS) and the optical band gap of the samples were found to be 2.57, 2.55 and 2.53 eV. The Vibrating sample magnetometer (VSM) studies at room temperature showcased that the nanoparticle samples possess ferromagnetic behavior, and the magnetization (Ms), Coercivity (Hc), and Retentivity (Mr) values were found to be 27.5 × 10−3 emu g−1, 237.60 Oe, and 1976 × 10−6 emu/g for the CdFe2O4 sample annealed at 900 °C. The gas sensing studies were carried out with the presence of target gas ammonia, and its significant sensing parameters such as gas responsivity (S%), rise time, and recovery times were determined, and these values of CdFe2O4 samples annealed at 900 °C were observed to be 1610%, 7.1 s, and 2.2 s. Our findings strongly suggest that the CdFe2O4 samples annealed at 900 °C hold significant promise as a multifunctional material, particularly in gas-sensing applications. This potential opens an exciting avenue for further research and development.
Design and performance analysis of a novel miniaturized band-stop filter for band rejection in Sub-6 GHz 5G spectrum
Authors: Kiouach Fatima , El Ghzaoui Mohammed , Das Sudipta , Islam Tanvir , Ali Wael 
Published: August 2024

Abstract
This paper introduces an innovative band stop filter specifically designed to reject a sub-6GHz band within the 5 G spectrum. Fabricated on an FR4 substrate with a relative permittivity of 4.4, the filter incorporates a defected ground structure (DGS) and features very compact dimensions of 19 mm × 11 mm × 0.8 mm. The filter design is performed using the High Frequency Structure Simulator (HFSS). Besides, the filter’s equivalent circuit is modeled using the ANSYS circuit editor. A parametric study has been conducted to identify the optimal parameters for the filter’s form and size. The proposed filter exhibits a rejected band of 1.42 GHz, spanning from 2.3 GHz to 3.72 GHz, with a center frequency of 3.18 GHz. Within the rejected band, the S21 value is less than −21.36, and the stop band fractional bandwidth (FBW) is 44.65%. Additionally, the filter demonstrates a negative group delay (NGD) characteristic in the frequency range of 2.97 GHz to 3.35 GHz, with a measured NGD time of −0.42 ns, and a quality factor equal to 2.24. These results underscore the filter’s suitability for applications utilizing frequencies below 2 GHz and above 3 GHz, ensuring efficient functionality.
Solving system of nonlinear Abel’s integral equations in frequency domain
Authors: Majidi Reza , Dastmalchi Farhad , Jahangirirad Mohammad 
Published: August 2024

Abstract
In this paper, we solve both linear and nonlinear systems of Abel’s integral equations by combining the Laplace transform with Bernstein polynomials. In the proposed approach, the unknown functions are approximated using Bernstein polynomials. The Laplace transform is then applied to convert the equations from the time domain to the frequency domain. This results in a nonlinear system in terms of unknown coefficients, which is solved using Newtons iterative method. The unknown function is thus approximated. To illustrate the efficacy of the proposed method, we present detailed analytical and numerical examples.
Predicting the dynamic behavior of soliton transmission in two ultra-short optical pulses based on improved physics-informed neural network
Authors: Wang Xuan , Xie Xiyang 
Published: August 2024

Abstract
In this manuscript, we construct physics-informed neural network and improved physics-informed neural network by modifying the loss function, for predicting the dynamic behaviors of bright-bright single-peak solitons, bright-bright double-peak solitons and dark-bright single-peak solitons for the coupled Sasa-Satsuma equations, which depict the characteristics of two ultra-short pulses with the third-order dispersion, stimulated Raman scattering effects and self-steepening propagating simultaneously in birefringent or dual-mode fibers. Firstly, the physics-informed neural network, which is a standard model for managing the soliton prediction, is improved to a double-layer structure, to forecast the bright-bright single-peak solitons. When predicting the bright-bright double-peak solitons and dark-bright single-peak solitons, we find that the above model does not learn the dynamics of solitons, so we add the end-time conditions as the constraints according to the motion characteristics of dynamic solitions. At the same time, considering the complex boundary conditions of the dark solitons, we modify the boundary conditions in the loss function of improved physics-informed neural network for predicting bright-dark solitons. By capturing instantaneous plots at three different times and comparing the predicted values with the exact solutions, it shows that the improved physics-informed neural network is effective. Furthermore, we select the appropriate number of iterations according to the comparison of training error and training time to improve the accuracy of the model.
Realization of meter-scale and high-density of charged particles by surface dielectric barrier discharge
Authors: Zhang Ming , Fu Qixiong , Li Chuan , Li Dingchen , Pan Yuan 
Published: August 2024

Abstract
Utilizing low-temperature plasma for the collection or removal of airborne particles presents a technology with significant potential applications. At atmospheric pressure, dielectric barrier discharge (DBD) is distinguished by its simplistic structure and safe, stable discharge properties. However, the majority of existing research on DBD devices concentrates on small-scale environments, with a notable absence of studies addressing the achievement of high-density diffusion of charged particles in expansive spaces. This study accomplishes the diffusion of high-density (exceeding 1 × 106 cm−3) ions over a meter-scale area through the combination of pulsed surface dielectric barrier discharge (SDBD) and a fan. The study details the impacts of various electrical (frequency, pulse width) and structural (electrode spacing distance, number of high voltage electrodes, dielectric thickness) parameters on ion generation. Experimental results demonstrate that an increase in frequency and pulse width positively influences ion concentration. Reducing the spacing distance between high voltage electrodes and augmenting the number of electrodes results in discharge suppression, a challenge that can be surmounted by elevating the pulse width and frequency. An expansive electrode spacing distance may lead to a diminished saturation ion concentration. Augmenting the thickness of the dielectric layer can enhance ion concentration by attenuating the uniformity of the discharge and decreasing the velocity of charged particle movement. The findings of this study offer valuable guidance for future applications of electrostatic methods in the large-scale removal of dust, fog, and haze from the air.
Predefined-time multi-switch combination-combination synchronization of fractional-order chaotic systems with time delays
Authors: Hailong Zhang , Ding Zhixia , Wang Liheng 
Published: August 2024

Abstract
In this paper, a predefined time multi-switch combination-combination synchronization (PTMSCCS) of fractional-order (FO) chaotic systems is innovatively investigated, advancing the research of combined synchronization of FO chaotic systems in communication. Meanwhile, to consider the problems that some disturbances may affect the system’s performance in practical applications, uncertainty, external disturbances, and time delays are added to four different FO chaotic systems. A newly designed controller and sliding surface are added to the system’s control so that the system can converge and stabilize in a predefined time. This paper uses the Lyapunov stability criterion to determine the stability of the control system and control theory. The final numerical simulation verifies that the system can achieve predefined time synchronization, proving the system design’s effectiveness.
A comparative study of the microstructure and shape memory behaviour of NiTi, NiTiHf, and Pt-added NiTiHf alloys
Authors: Mohan M S , Ramaiah K V , Saikrishna C N , Banerjee Dipankar 
Published: August 2024

Abstract
The microstructure, substructure, transformation temperature, and recovery ratio of a novel Ni45Pt
5
Ti30Hf20 alloy are reported in the current work. The properties of binary TiNi and ternary TiNiHf alloys are also characterized to establish a comparative basis for shape memory behaviour. The microstructure of the cast structure of Ni45Pt5Ti30Hf20 alloy showed a dendritic matrix and interdendritic eutectic-like mixture, and that of the homogenized structure consisted of martensitic matrix and secondary phase of dark contrast having the composition (Ti+Hf)2(Ni+Pt). Pt substitution of Ni in the ternary alloy with 20 at.% Hf by 5 at.% leads to a decrease in the Af, As, Ms, and Mf . Ms and Mf represent the temperatures at which austenite to martensite transformation starts and completes, respectively, while As and Af represent the temperatures at which martensite to austenite transformation starts and completes, respectively. The XRD studies showed that the structure of martensite is B19′ and TEM studies showed that the substructure of martensite in Pt modified NiTiHf alloy is similar to that of ternary NiTiHf alloy. The shape memory recovery of the Pt-modified alloy is similar to the ternary alloy at higher strength levels. The recovery ratio determined using Vickers indentation is compared with that determined using compression tests to provide an efficacy of small volume tests for screening of these alloys.