bluuebunny/crossref_metadata_2025_split huggingface dataset:
Construction of novel nanocomposite based on the reduced graphene oxide/metalation of porphyrin for photocatalytic process by real sample analysis and antimicrobial applications
Authors: Syed Asad 
Published: September 2024

Abstract
The main objective of this study is to prepare and combine reduced graphene oxide (rGO) with copper-5,15-bisdodecylporphyrin (Cu-Por) nanoparticles in order to produce a unique rGO-loaded Cu-Por nanocomposite. Characterization techniques such as scanning electron microscopy (SEM), Raman spectroscopy, x-ray diffraction (XRD), x-ray photoelectron absorption spectroscopy (XPS) and ultraviolet-visible (UV–vis) spectroscopy were utilized to analyze the structure of the synthesized rGO/Cu-Por. The effectiveness of the resulting rGO/Cu-Por nanocomposite as a catalyst was evaluated based on several parameters, such as pH, the initial concentration of the MR dye, and the amount of nanocomposite employed. Remarkably, a quantity of 20 mg of the rGO/Cu-Por nanocomposite demonstrated a significant removal efficiency of 99.7% for MR at a pH level of 3.5. The actual sample exhibited a degradation amount of 69.21%. In addition, the antimicrobial efficacy of the nanocomposite was assessed against the G-negative and the G-positive bacterium Staphylococcus aureus. The findings demonstrate that the rGO/Cu-Por nanocomposite displayed significant antimicrobial activity with great zone of inhibition values.
Improving phase sensitivity of a hybrid interferometer with the two-mode squeezed coherent state
Authors: Shao Tao , Ruan Pengxiang , Zhang Minyang , Wang Yuanxiang , Zhang Mingming , Jing Qingli , Liu Jun 
Published: September 2024

Abstract
We investigate the enhancement of phase sensitivity of a nonlinear-linear hybrid interferometer with the input of the two-mode squeezed coherent state (TMSCS). With the TMSCS produced by four-wave mixing, the quantum Cramér-Rao bounds (QCRB) can beat the Heisenberg limit (HL). Under the phase matched conditions, the optimal phase sensitivity with the balanced homodyne detection measurement can beat the HL and approach QCRB. The effects of internal and external losses on the measurement accuracy are also discussed. The results demonstrate that the scheme is robustness against to internal losses and this protocol can resist external detection loss which is up to 39%. Our results improve the performance of hybrid interferometers and this scheme can find important practical applications in quantum metrology.
Topological edge states of acoustic zigzag tubes with triangle scatterers
Authors: Liu Yan , Wang Lifeng 
Published: September 2024

Abstract
Tubular geometries in phononic crystals have the advantages of hosting topological edge states without breaking the underlying symmetry of the lattice. The topological relationships between the acoustic zigzag tubes and the dispersion relation of the planar phononic crystal with a zigzag edge boundary are theoretically revealed through 2D k space analysis, circumferential pressure analysis, and lattice symmetry analysis. New cutting lines of the tubes are obtained, which link the winding number of the tubes with the dispersion relation of topological edge states in the planar phononic crystal. The eigenstates analysis shows that the circumferential periodic number of a tubular edge state is regular and corresponds to a specific wavenumber in the circumferential direction. On the basis of the unveiled topological relationships, tubular edge states with tunable properties are obtained by controlling the characteristic length of the boundary scatterers. Moreover, the tubular edge states are confirmed to be highly confined and robust along the designed transmission channel. This study may present a new way to design acoustic tubes with tunability and have potential applications in robust wave propagation and miniaturized phononic devices.
Analysis of short-term self-healing performance of asphalt mixture under a three-point bending fatigue test
Authors: Wang Ya , Zhang Liwen , Wang Xianguang 
Published: September 2024

Abstract
To evaluate the self-healing performance of asphalt mixture under repeated loads, indoor three-point bending fatigue tests and self-healing tests were conducted on asphalt mixture AC-13. The stress control mode was selected to test the fatigue resistance of the mixture, and the dissipated energy recovery value and visco-elastic ratio were proposed to evaluate the self-healing performance of the mixture. The experimental results show that there is a good linear relationship between fatigue life and fatigue stress, and the damage degree to the mixture is exponentially related to the load times. The numerical dispersion of flexural tensile modulus is large, which is not suitable for evaluating the self-healing performance of the mixture. As the number of loading cycles increases, the hysteresis dissipated energy of the mixture gradually decreases and tends to stabilize. After the loading interval, due to the self-healing effect, the visco-elastic performance of the asphalt material is partially restored. The initial dissipated energy before and after interval can be used as an evaluation index for self-healing behavior, and there is a good linear relationship between the initial dissipated energy and the damage degree. Due to the deformation migration of the mixture during the initial loading stage before and after interval, the visco-elastic ratio has changed, and this change becomes more pronounced with the damage degree of the mixture, indicating that the self-healing ability of the mixture has also been improved.
The effect of trace vanadium addition on mechanical properties, microstructure and austenite phase characteristics in a 3.9% Al-Delta TRIP steel
Authors: Emamian Yaser , Kolahi Alireza , Palizdar Yahya , Sadeghpour Saeed 
Published: September 2024

Abstract
This study aimed to examine the effect of adding 0.12 wt% vanadium on the properties of delta TRIP steel through microstructural and mechanical investigations. The delta ferrite phase was observed in all annealing temperatures and samples. Carrying out bainitic transformation at 350 °C for 6, 10, and 15 min resulted in the stability of the austenite phase and the formation of ferritic bainite phase after heat treatment. The presence of vanadium led to the formation of MC precipitate phases and reduced the remaining austenite percentage from 14% to 6% by weight in the heat-treated sample. The low percentage of austenite in vanadium-containing steel has weakened the TRIP effect in strengthening. On the other hand, the presence of MC precipitates has compensated for the reduction in strength from the TRIP strengthening process through precipitation hardening and reducing the grain size of the delta ferrite phase. The resulting properties (UTS: 866 MPa and El: 41.3%) have led to the creation of a formability index of 35 GPa% in vanadium-containing steel, which is better than the mechanical properties (UTS: 857 MPa and El: 37.4%) and the formability index of vanadium-free steel (32 GPa%). These factors make this steel a suitable option for automotive industry applications. Based on these features make this steel a suitable candidate for automotive industries. Microstructural investigations revealed that the addition of vanadium reduces the grain size of the delta ferrite phase. Typically, the austenite phase forms around the ferritic bainite phase and delta ferrite grain boundaries. During tensile testing, it transforms into martensite through the TRIP process.
Insight into a new perspective on the complex propagation processes in networks: dynamic link equations
Authors: Song Jiahui , Gong Zaiwu 
Published: September 2024

Abstract
Insight into the spread of epidemics under different transmission mechanisms in networks has long been an important research question in the field of complex network dynamics. Currently, under simple transmission mechanisms, our analysis of the dynamic processes in networks starts only from the node level, considering the scale of infected nodes in the network. However, the information provided by this lowest-order approach to considering dynamic processes in networks is very limited. Most importantly, it is not applicable to the analysis of dynamic processes in networks under more common complex transmission mechanisms, as it neglects the interactions between nodes. Therefore, in this article, we propose a set of closed link dynamic equations to gain insight into complex propagation processes from a microscopic perspective. Fundamentally, we have developed a set of analytical tools for analyzing complex dynamic behaviors at the link level, enabling us to reexamine the complex dynamic processes on networks from a higher-order perspective. Additionally, we apply the proposed analytical framework to complex SIS epidemiological models on two real and synthetic networks, and extensive numerical simulation results demonstrate the feasibility and effectiveness of the proposed method.
Neutrino halo profiles: HR-DEMNUni simulation analysis
Authors: Hernández-Molinero Beatriz , Carbone Carmelita , Jimenez Raul , Garay Carlos Peña 
Published: September 2024

AbstractUsing the high-resolution HR-DEMNUni simulations, we computed neutrino profiles within virialized dark matter haloes. These new high-resolution simulations allowed us to revisit fitting formulas proposed in the literature and provided updated fitting parameters that extend to less massive haloes and lower neutrino masses than previously in the literature, in accordance with new cosmological limits. The trend we observe for low neutrino masses is that, for dark matter halo masses below ∼ 4 × 1014h-1M⊙, the presence of the core becomes weaker and the profile over the whole radius is closer to a simple power law. We also characterised the neutrino density profile dependence on the solid angle within clustered structures: a forward-backward asymmetry larger than 10% was found when comparing the density profiles from neutrinos along the direction of motion of cold dark matter particles within the same halo. In addition, we looked for neutrino wakes around halo centres produced by the peculiar motion of the halo itself. Our results suggest that the wakes effect is present in haloes with masses greater than 3 × 1014h-1M⊙where a mean displacement of 0.06h-1Mpc was found.
Radiating particles accelerated by a weakly charged Schwarzschild black hole
Authors: Juraev Bakhtinur , Stuchlík Zdeněk , Tursunov Arman , Kološ Martin 
Published: September 2024

Abstract
It is well known that supermassive black holes in the centers of galaxies are capable of
accelerating charged particles to very high energies. In many cases, the particle acceleration by
black holes occurs electromagnetically through an electric field induced by the source. In such
scenarios, the accelerated particles radiate electromagnetic waves, leading to the appearance of
the backreaction force, which can considerably change the dynamics, especially, if the particles
are relativistic. The effect of the radiation reaction force due to accelerating electric field of
the central body in curved spacetime has not been considered previously. We study the dynamics of
radiating charged particles in the field of the Schwarzschild black hole in the presence of an
electric field associated with a small central charge of negligible gravitational influence. We
use the DeWitt-Brehme equation and discuss the effect of the self-force, also known as the tail
term, within the given approach. We also study the pure effect of the self-force to calculate the
radiative deceleration of radially moving charged particles. In the case of bounded orbits, we
find that the radiation reaction force can stabilize and circularize the orbits of oscillating
charged particles by suppressing the oscillations or causing the particles to spiral down into the
black hole depending on the sign of the electrostatic interaction. In all cases, we calculate the
energy losses and exact trajectories of charged particles for different values and signs of
electric charge.
A power spectrum approach to the search for axion-like particles from resolved galaxy clusters using CMB as a backlight
Authors: Mehta Harsh , Mukherjee Suvodip 
Published: September 2024

AbstractAxions or axion-like particles (ALPs) are hypothetical particles predicted by beyond standard model theories, which make one of the dark matter candidates. These particles can convert into photons and vice-versa in the presence of a magnetic field, with a probability decided by its coupling strength gaγ. One of the ways to detect these particles is by using the Cosmic Microwave Background (CMB) as a backlight. As the CMB photons pass through a galaxy cluster, they can get converted into ALPs in the mass range 10-15eV to 10-11eV through resonant conversion in the presence of cluster magnetic fields. This leads to a polarized spectral distortion (α-distortion) in the CMB as the photon polarization parallel to the magnetic field in the galaxy cluster is involved in the conversion. The fluctuations in the magnetic field and electron density in a galaxy cluster lead to spatially varyingα-distortion around the cluster, with a power spectrum that is different from the lensed E-mode and B-mode CMB polarization power spectrum for the standard model of cosmology. By measuring the difference in the polarization power spectrum around a galaxy cluster from the all-sky signal, one can find newα-distortion in the sky. For the resolved galaxy clusters, if the redshift, electron density, and magnetic field profiles of the cluster can be constrained using optical, X-ray, and radio observations, one can measure the coupling strength gaγfrom the ALP power spectrum. The contamination from CMB and galactic foregrounds such as synchrotron and dust can be mitigated by using multiple frequency bands by leveraging on the difference in the spectral shape of the signal from foregrounds. Using the ILC technique to clean the foregrounds, we show that the new power spectrum-based approach of the resolved galaxy clusters from upcoming CMB experiments such as Simons Observatory and CMB-S4 can detect (or put constraints) on the ALP-photon coupling strength of gaγ< 5.2 × 10-12GeV-1and gaγ< 3.6 × 10-12GeV-1at 95% C.I. respectively for ALPs of masses 10-13eV or for smaller gaγfor lighter ALP masses.
Back-side stress to ease p-MOSFET degradation on e-MRAM chips
Authors: Yu 于 Zhi-Meng 志猛 , Yang 杨 Xiao-Lei 晓蕾 , Zhao 赵 Xiao-Nan 晓楠 , Li 李 Yan-Jie 艳杰 , He 何 Shi-Kun 世坤 , Wang 王 Ye-Wu 业伍 
Published: September 2024

Abstract
The magnetoresistive random access memory process makes a great contribution to threshold voltage deterioration of metal–oxide–silicon field-effect transistors, especially on p-type devices. Herein, a method was proposed to reduce the threshold voltage degradation by utilizing back-side stress. Through the deposition of tensile material on the back side, positive charges generated by silicon–hydrogen bond breakage were inhibited, resulting in a potential reduction in threshold voltage shift by up to 20%. In addition, it was found that the method could only relieve silicon–hydrogen bond breakage physically, thus failing to provide a complete cure. However, it holds significant potential for applications where additional thermal budget is undesired. Furthermore, it was also concluded that the method used in this work is irreversible, with its effect sustained to the chip package phase, and it ensures competitive reliability of the resulting magnetic tunnel junction devices.
Freezing imaginarity of quantum states based on ℓ1-norm
Authors: Han 韩 Shuo 烁 , Zheng 郑 Bingke 冰轲 , Guo 郭 Zhihua 志华 
Published: September 2024

Abstract
We discuss freezing of quantum imaginarity based on ℓ
1-norm. Several properties about a quantity of imaginarity based on ℓ
1-norm are revealed. For a qubit (2-dimensional) system, we characterize the structure of real quantum operations that allow for freezing the quantity of imaginarity of any state. Furthermore, we characterize the structure of local real operations which can freeze the quantity of imaginarity of a class of N-qubit quantum states.
Design of superconducting compounds at lower pressure via intercalating XH4 molecules (X = B, C, and N) into fcc lattices
Authors: Zhao 赵 Yue 玥 , Liu 刘 Sihan 思涵 , Liu 刘 Jiao 骄 , Gu 顾 Tingting 婷婷 , Hao 郝 Jian 健 , Shi 石 Jingming 景明 , Cui 崔 Wenwen 文文 , Li 李 Yinwei 印威 
Published: September 2024

Abstract
Recently, many encouraging experimental advances have been achieved in ternary hydrides superconductors under high pressure. However, the extreme pressure required is indeed a challenge for practical application, which promotes a further exploration for high temperature (T
c) superconductors at relatively low pressure. Herein, we performed a systematic theoretical investigation on a series of ternary hydrides with stoichiometry AX
2H8, which is constructed by interacting molecular XH4 (X = B, C, and N) into the fcc metal A lattice under low pressure of 0–150 GPa. We uncovered five compounds which are dynamically stable below 100 GPa, e.g., AcB2H8 (25 GPa), LaB2H8 (40 GPa), RbC2H8 (40 GPa), CsC2H8 (60 GPa), and SrC2H8 (65 GPa). Among them, AcB2H8, which is energetically stable above 2.5 GPa, exhibits the highest T
c of 32 K at 25 GPa. The superconductivity originates mainly from the coupling between the electron of Ac atoms and the associated low-frequency phonons, distinct from the previous typical hydrides with H-derived superconductivity. Our results shed light on the future exploration of superconductivity among ternary compounds at low pressure.
A novel approach for the anomalous collectivity in neutron-deficient Os isotopes*
Authors: Teng 滕 Wei 威 , Zhang 张 Yu 宇 , Qi 亓 Chong 冲 
Published: September 2024

Abstract
An algebraic model with three-body boson interactions is proposed to incorporate the different quadrupole modes in nuclear collectivity. It is shown that the recently observed anomalous collective structure characterized by

and

, which cannot yet be explained by any other microscopic nuclear models, naturally emerges in the present model due to the inclusion of triaxial rotor modes. This description is further extended to describe odd-A nuclei by including the coupling to the Fermion degree of freedom. This allows us to give a unified explanation of the anomalous

strengths in both even-even and even-odd systems, which indicate different behaviors. As examples, the model is applied to describe the spectroscopy and

transition properties of

Os. All recent measurements of these isotopes can be well reproduced on the same footing, which suggests that the anomalous collectivity persists even in odd-A systems.
Systematic study of cross section for proton-induced reactions on neodymium up to 65 MeV using TALYS-1.96 code
Authors: Saha A. 
Published: September 2024

Abstract
A systematic study was conducted on the theoretical estimation of the nuclear cross sections of charged particle induced reactions on rare earth nuclei. The production cross sections of the 150,149,148,146,144,143,141Pm and 149,147Nd nuclei were calculated theoretically via proton induced reactions on neodymium using TALYS (version 1.96) code in the default mode, with different combinations of nuclear models as well as adjusted nuclear model parameters from the reaction threshold up to a proton energy of 65 MeV. The theoretically computed results were compared with the experimental results taken from the EXFOR database and literature reported by various research groups. Moreover, the effects of various level density models, preequilibrium models, optical model potentials, and gamma strength functions on the cross section calculation were considered. This theoretical analysis will help elucidate the theory of nuclear reaction models and improve the evaluated nuclear data libraries.
Continuous GPS PPP-AR frequency transfer links
Authors: Jian Bin , Gertsvolf Marina 
Published: September 2024

Abstract
In this paper, we show that the SPARK software of the Natural Resources Canada (NRCan) with their DCR (Decoupled Clock Rapid) products can be used to generate the PPP-AR continuous batch clock solutions of multiple days, which we use to build frequency transfer links between two remotely located GPS receivers. The reliability and confidence in forming the long-term frequency transfer links have been improved compared to Jian et al (2023 Metrologia
60 065002). We compare the SPARK PPP-AR links to an optical fiber and TWSTFT links for hundreds of days. The ~500-day-long comparisons with TWSTFT show no frequency bias for continental and cross-continental links. Frequency transfer links formed using the SPARK solutions have uncertainty of

1
×

10

−
15

/

T

, where T is in days, without reaching the noise floor, a critical requirement for comparing optical frequency standards and for the redefinition of the SI second. The short latency of the NRCan DCR products enables the quick availability of the PPP-AR links presented in this paper marking it particularly relevant for time sensitive applications.
Mechanical properties assessment of composite solid propellant based on different aziridine bonding agents
Authors: Eissa Mohamed F. , Maraden Ahmed , Mostafa Hosam E. 
Published: September 2024

Abstract
The employment of the dynamic mechanical analyzer (DMA) represents a modern methodology for the monitoring of the thermo-mechanical characteristics and also the thermomechanical loads of polyurethane-based composite solid rocket propellants during combustion. A meticulous preparation of composite propellant samples based on different bonding agents was carried out to examine the influence of various bonding agents on mechanical properties. To simulate the effects of natural aging, an accelerated aging program was implemented and subjected to the propellant samples for 5-day exposure at 90°C, equivalent to 5 years of natural aging. The dynamic mechanical modern analysis technique was used to assess the viscoelastic behavior and degree of viscoelasticity of both fresh and aged propellant samples. It is concluded that M4 based on MT-X bonding agent is the most valuable formulation of CSRP with tan δ of 0.183591, also with mechanical results; implying that M4 formulation based on MT-X bonding agent has the highest degree of viscoelasticity.
Design of small independent photovoltaic power generation system
Authors: Li Nan , Wang Jin , Zhang Yi 
Published: September 2024

Abstract
This article designs a small independent photovoltaic power generation system, which includes solar panels, controllers, batteries, and inverter modules. The design requirements and principles of boost converters and inverters were elaborated, and the inverters were simulated in Matlab; The fuzzy control method was selected to track the maximum power point, and its effectiveness was verified through MATLAB simulation; Corresponding methods have been proposed to prevent or reduce factors that affect the output power of photovoltaic arrays, such as power attenuation, shielding loss, and temperature rise loss. It has extremely important significance for promoting the development of photovoltaic power generation, achieving zero carbon goals, and sustainable development of human society.