bluuebunny/crossref_metadata_2025_split huggingface dataset:
Heralded hyper-CNOT gates for two-photon systems assisted by quantum scattering in waveguides
Authors: Zhang Jing-Xue , Sun Xue-Tong , Wang Lin-Xiong , Wei Hai-Rui , Song Guo-Zhu 
Published: July 2024

Abstract
Photonic hyper-parallel quantum gates play a critical role in high-capacity quantum communication and fast quantum computing. Here, based on photon scattering in one-dimensional (1D) waveguides, we present some heralded schemes for constructing four-qubit hyper-controlled-not (hyper-CNOT) gates in two-photon systems. The qubits are encoded on both the polarization and spatial-mode degrees of freedoms (DOFs) of the photons, which can simplify the quantum circuit and reduce the quantum resource consumption. In our schemes, the faulty scattering events between photons and emitters caused by system imperfections can be filtered out and discarded. That is, our protocols for hyper-CNOT gates work in a heralded way. Our calculations show that, with great progress in the emitter-waveguide systems, our photonic hyper-CNOT gates may be experimentally feasible.
Analysis of Transformer GSB Bushing Fault Causes Based on Finite Element Simulation
Authors: Xu Shurong , Liu Jun , Li Kun , Ma Hong , Chen Peilong , Huang KeJie 
Published: July 2024

Abstract
In response to a sudden explosion and fire fault during the operation of a GSB dry-type transformer bushing in a certain power grid company, based on the structural parameters of the bushing measured by the supplier and on-site, a reverse design of the capacitor core was carried out on the faulty bushing. Based on the measured parameters and reverse design results, a finite element simulation model of the bushing electric field and structural force field was established. Calculate the electric field distribution of the casing under normal operation, 60s power frequency withstand voltage, lightning impulse, operation impulse, and other operating conditions; Conduct finite element simulation of structural mechanics to calculate the stress distribution of the casing under conditions such as cantilever load and short circuit impact; Based on the discharge traces discovered during disassembly, simulation calculations were conducted by assuming the defect situation of the casing, and the electric field distribution of the casing under different defect types was quantitatively analyzed. The simulation calculation results of the electric field under various working conditions have verified that the occurrence of this fault is the result of multiple defects working together, providing quantitative support for fault analysis and providing a certain reference for the operation and maintenance of similar casings.
Research on Pressure Sensor of Circular Monocrystalline Silicon Chassis
Authors: Zhu Ziyi , Zhang Shougang , Ruan Jun 
Published: July 2024

Abstract
Traditional sensors, such as pressure, piezoelectric or piezoresistive, mostly use square silicon-based materials as chassis and use Wheatstone bridge circuits to measure pressure and resistance values. Nowadays, reducing the size of sensors is also a problem to be solved in the increasingly wide range of sensor applications. In this paper, a circular monocrystalline silicon base pressure sensor is designed and its performance is studied. We applied COMSOL software to model the circular chassis base pressure sensor, tested the deformation of the circular chassis base pressure sensor under different access volttimes and pressures, analyzed its sensitivity and other performance, and compared the above performance with the rectangular monocrystalline silicon chassis base pressure sensor. The experimental results show that the circular monocrystalline silicon chassis pressure sensor has excellent electrostriction performance, and the variation of the potential and potential difference in the measuring area is more obvious than that of the rectangular monocrystalline silicon chassis pressure sensor. This paper provides a reference for sensor makers.
Impact of Battery Capacity and Charging-Discharging Cycles on the Performance of Communication Devices
Authors: Tao Jiaju , Qian Song , Yang Junfei 
Published: July 2024

Abstract
This study investigates the crucial role of battery capacity and charging-discharging cycles in determining the performance of communication devices, especially electric vehicles (EVs). Given the multifaceted factors affecting battery performance, including type, specification, and environmental conditions, it becomes essential to develop a robust method for modeling and analyzing battery behavior under various scenarios. Our research introduces a novel approach that amalgamates machine learning and optimization techniques to comprehensively model and analyze battery performance. Utilizing real-world data from an EV fleet, we validate our method against existing models, demonstrating superior accuracy, efficiency, and robustness. The findings reveal our method’s effectiveness in optimizing communication devices’ performance metrics, such as efficiency, cost, and reliability, by accurately capturing the nonlinear and dynamic relationships between battery capacity and usage cycles. Our conclusion underscores the potential of this method in enhancing the management and optimization of communication devices, paving the way for more sustainable and efficient use of battery technology in EVs.
Design of a Portable Emergency DC Power Supply
Authors: Wang Xin 
Published: July 2024

Abstract
In recent years, wireless or handheld devices have become increasingly widely used, especially in areas such as environmental monitoring and the Internet of Things. However, due to environmental conditions, they cannot rely on the power grid to provide electricity, and energy supply has become a key issue that restricts the deployment and operation of such devices. This article introduces the method and principle of applying a microcontroller control system to a portable emergency DC power supply, and proposes a method for a portable emergency DC power supply with adjustable and stable output. The output voltage can be adjusted in steps of 0.1-15V. This adjustable portable emergency DC power supply not only has the advantages of small volume and low loss of switch mode power supply, but also has the advantages of small output voltage ripple and good output characteristics of linear power supply. It has certain research significance and practical value.
A Precise Temperature Control Method for Lithium-ion Battery Pack based on the Nonlinear Model Predictive Control Algorithm
Authors: Wen Zhihao , Wei Yalin 
Published: July 2024

Abstract
To utilize the maximum performance of the battery while ensuring its thermal safety, a battery thermal management system is used to control the battery maximum temperature within a safe range. This paper centres on the establishment of a temperature prediction model and the development of the nonlinear-based model predictive control (MPC) strategy. First, to address the need of predicting battery temperature, this paper develops a distributed parameter thermal resistance model to predict battery temperature quickly and accurately. Secondly, the open-loop formulation of the nonlinear-based MPC is derived based on the established state space equations. Then the soft and hard constraints of the model are established based on the actual current conditions, pump conditions, temperature difference and temperature rise indexes, so as to establish the objective function of the MPC algorithm. Finally, the established temperature nonlinear MPC algorithm is embedded on the board and the hardware platform of battery liquid cooling system is established. The experiment test result shows that the maximum error of temperature control is less than 0.1°C, and the effectiveness of the temperature control strategy of lithium-ion battery is verified through experiments.
Design of a High Frequency Stability Control Algorithm for Flexible DC Systems
Authors: An Rui , Wei Mengyang , Zhao Jinlong , Yang Junhui , Li Hongbo 
Published: July 2024

Abstract
The suppression scheme of flexible DC high-frequency oscillation needs to be based on model construction. Related literatures have established a high-order linearization model of converter station, gradually revealing the influence of control system and its parameters on impedance characteristics. In order to ensure the full utilization of renewable energy, it is necessary to deeply study the interaction characteristics between multi-terminal VSC-HVDC (Voltage Source Converter based High Voltage Direct Current Transmission) and the receiving power grid, and design a grid-friendly control strategy. In this paper, a VSC-HVDC high-frequency stability control algorithm is established, and a double-ended VSC-HVDC bidirectional VSC stable switching controller is constructed. The switching sequence generated by the controller replaces the control sequence generated by the previous PWM (Pulse width modulation) modulation, so as to weaken the influence of the inner loop current control parameters on the stable operation of the system. The simulation results show that the reactive power fluctuation amplitude of PI control on the inverter side is 0.031 p.u, and the stabilization time is 0.43s. The reactive power fluctuation amplitude of bidirectional VSC stable switching control is less than 0.012 p.u, and the stability time is less than 0.2s. When the single-phase grounding wire is short-circuited, the bidirectional VSC regulator switch has better control performance than the PI regulator switch. Compared with the traditional PI controller, the proposed controller has better stability. The system can quickly enter a stable and non-overshoot operation state, and achieved good control effect.
Synthesis and Characterization of NiCo2S4-MOF-ZIF-67@rGO for Efficient Electrochemical Energy Storage
Authors: Antony Sakthi S. , Priyadarshini K. , Mani C. , Rusho Robin Prasad S. , Dominic A. 
Published: July 2024

Abstract
A nanocomposite, NiCo2S4-MOF-ZIF-67@reduced grapheme oxide was produced via a straightforward and scalable hydrothermal process. The product nanocomposite was characterized using different techniques including Infra red spectroscopy, X-ray diffraction analysis, scanning electron microscopy and electrochemical measurements. This nanocomposite was found to be composed of NiCo2S4 nanoparticles embedded in a MOF-ZIF-67 matrix, which was anchored onto rGO sheets. The NiCo2S4-MOF-ZIF-67@rGO nanocomposite exhibited excellent electrochemical performances. These properties make the NiCo2S4-MOF-ZIF-67@rGO nanocomposite a potential electrode substance in the case of electric energy accumulators and conversion devices such as primary and rechargeable Li cells and high performance ultra-capacitors. The simple and scalable synthesis method used in this study also suggests that this material has potential for large-scale production.
A Facile Synthesis and Characterisation of CdS Nanoparticles at Low Temperature Using Aegle Marmelos Extract
Authors: Rajkumar Thirunavukkarasu , Venkateswaran Lakshmy , Thirunavukkarasu Somanathan , Rangasamy Sasieekhumar Amman 
Published: July 2024

Abstract
CdS NPs have become found applications across diverse domains in the field of nanobiotechnology because of their established biomedical characteristics. The dimensions and the materials used for coating CdS NPs are pivotal factors influencing their effectiveness in biomedical applications like cancer treatment, bacterial inhibition, bioimaging and biosensors. In this study, we succesfully produced CdS NPs by ecofriendly approach using aegle marmelos extract. The synthesized CdS NPs was subjected to characterization using X-Ray Diffraction spectroscopy (XRD), Ultraviolet-Visible spectroscopy (UV-VIS), Fourier Transform Infrared spectroscopy (FT-IR), Dynamic Light Scattering (DLS), Scanning Electron Microscope (SEM) with EDX and Transmission Electron Microscope (TEM). The research delineates a straightforward, economically viable environmentally friendly approach to synthesizing CdS nanoparticles, which is suitable for extensive production. Additionally, it presents a tactic to regulate both the size and distribution of nanoparticles using eco-friendly biomolecules, enhancing their potential for various applications. Based on the results obtained from the characterization studies, it was proposed to the further process for biological applications.
Fabrication of europium substituted hydroxyapatite coating on polyindole-5-carboxylic acid coated titanium for bone implant applications
Authors: Ramya S. , Nilufer A. , Saravanakumar P. , Kavitha L. , Shinyjoy E. 
Published: July 2024

Abstract
In the present study we account on the fabrication of duplex layer (Europium substituted hydroxyapatite (Eu-HAP) and Polyindole-5-carboxylic acid (PICA)) coatings on Ti by electrochemical technique. The as fabricated coatings were characterized for its functional groups and morphology by Fourier Transform Infrared Spectroscopy (FT-IR) and scanning electron microscopic (SEM) techniques, respectively. The corrosion resistance performance (i.e., bioresistivity) of the coatings was evaluated by electrochemical characterizations. Further, the biocompatibility of the coatings was characterized by in vitro antibacterial and cell viability. Thus, the as-developed Eu-HAP/PICA duplex coating will be a prospective and promising material for bone implant applications.
Growth of Helical Coiled Double and Triple Walled Carbon Nanotubes at Low Temperature using FeMoMgO catalyst
Authors: Manikandan Dhanavel , Somanathan Thirunavukkarasu 
Published: July 2024

Abstract
Helical coiled double and triple walled carbon nanotubes (CNTS) were synthesized using chemical vapor deposition (CVD) method using FeMoMgO catalyst. The FeMoMgO catalyst was prepared using combustion process followed by multi walled CNTs synthesize. The final products were characterized by X-Ray diffraction (XRD), FT-IR, SEM, TEM and FESEM (surface morphology) along with electron dispersion X-ray spectrometer (EDX). The XRD results show that Fe is well incorporated with Mg which indicates crystalline in nature. FT-IR, results confirm the presence of functional group and metal ion. FESEM indicates the formation of larger and non-uniform particles with higher active sites. SEM and TEM results show that at low temperature coiled CNTs were formed with 2-5nm in diameter. In conclusion that Helical coiled double and triple walled CNTs were synthesized using FeMoMgO Catalyst at low temperature.
Synthesis of MgAl2O4/gC3N4 nanocomposite and evaluation of their antioxidant properties by FRAP assay
Authors: Nitha T.V. , Britto S. 
Published: July 2024

Abstract
In this study, MgAl2O4/gC3N4 composite material was successfully synthesized by the impregnation method and characterized by XRD, SEM, EDAX, and UV-visible analysis. The structural properties of the material are obtained from XRD analysis, and the optical properties are investigated by a UV-visible study. The morphological characteristics and compositional analysis of the nanomaterial are studied by SEM with EDAX spectra. The antioxidant activity of the material was examined through a FRAP assay, and the results show it has 90% activity.
Fabrication and Identification of Characteristics and Biological Evaluation of 2-[(4-hydroxy-phenylimino)-methyl]4-methoxy-phenol (4-MSAP-L) and its First Transition Metal Complexes Derived from 5-methoxysalicylaldehyde and 4-aminophenol
Authors: Joseph Bijoy , Paul Johnpeter M. , Alphonsa Juliet Helina JK. , Paul Raj A. 
Published: July 2024

Abstract
The demand for novel and more effective anti-microbial agents is a continuous occurrence since the microbes has the ability to develop immunity to the existing antibiotics. Combination, characteristics of novel 2-[(4-Hydroxy-phenylimino)-methyl]-4-methoxy-phenol (4-MSAP-L) and its corresponding metal complexes and their biological applications are widely discussed in this paper mixture of 4-MSAP-L from 5-methoxysalicylaldehyde with p-aminophenol is done which has not been earlier on announced. Starting from this 4-MSAP-L, different transition metal complexes were prepared. Here, Mn(II), Ni(II), Co(II), Cu(II) and Zn(II) metal chlorides used in the coordination. With the assistance of analytical as well as physico-chemical arrangements 4-MSAP-L and metal complexes prepared and characterized. Biological studies of the newly synthesized 4-MSAP-L and metal complexes also reported.
Production of Natural Food Colorant with Organic Mordant Solutions and Incorporation into Modern Food Systems
Authors: Subriya S , Maheshwari M , Saranya E , Senthil Nathan M , Sridevi M , Nirmala C 
Published: July 2024

Abstract
Colorants are an important exposure that affects the way we feel and judge foods. The food colorant is normally associated with the flavor, safety and nutritional value of the food product. Colorant are obtained from natural plants and minerals. In today’s world, synthetic oxidative food colors are used. It contains a high chemical composition and is derived from petroleum or crude oil. Sunset yellow, carmine, amaranth and azorubine are examples of common synthetic food colors. It leads to some diseases such as asthma, allergy reactions and cancer. Hence, natural food colors were produced from natural plants. The plants contain several pigments, such as betacyanin, anthocyanin and curcumin. The fruit juice of Opuntia ficus-indica, in particularly it contains betacyanin pigments, which can be used as a natural red-purple food colorant. In order to improve the results, we extracted the juice from Opuntia ficus-indica and banana pseudo-stem. Next, we qualitatively analyzed the juice to find out whether flavonoids, triterpenoids, proteins, alkaloids, carbohydrates, saponin, tannin, and phenol was present. Opuntia ficus-indica has antioxidant properties, as does banana pseudostem sap, which has antioxidant, antithrombotic and anti-haemolytic properties. Then analyzed physical parameters of color strength were measured (using a UV spectrophotometer) at 450 nm to determine color strength and that the results were good with pH, viscosity, smell and taste. And toxicity analyses of aflatoxin and ochratoxin shows good results. This colorant has been used successfully in two food systems: ice cream and milkshakes. which is preserved after one month in the refrigerator.
Dielectric and Mechanical Studies of Cyclohexylammonium Hydrogen Maleate Hemihydrate Single Crystals
Authors: Gomathi R. , Madeswaran S. , Ramki C. , Vedichi N. , Prathab H. 
Published: July 2024

Abstract
CYHMH crystal was grown using solution growth technique The crystal corresponds to monoclinic structural system with C12/C1 space group (centrosymmetric in nature) and The final cell constants values are a = 24.109 (2) Å, b = 5.5157(4) Å, c = 18.6739(14) Å, β = 110.807(2)°, volume = 2321.2(2) Å. Mechanical studies were measured using Vicker’s hardness tester and n was 1.40, therefore the CYHMH crystals comes under hard materials category. The elastic toughness (stiffness) decreased with increases in applied load. Dielectric permittivity of CYHMH and loss factor were calculated as a function of log frequency. While increasing the temperature the dielectric parameters (dielectric constant, loss, AC conductivity) also increased. The energy required to activate the conductivity were also calculated for higher frequency region.
Hysteresis of Northern Hemisphere permafrost to carbon dioxide emissions
Authors: Wei Ting , Chen Yueli , Wang Hui 
Published: July 2024

Abstract
Carbon dioxide removal (CDR) is proposed to limit the level of global warming and minimize the impacts of climate crises. However, how permafrost may respond to negative carbon emissions remains unknown. Here, the response of near-surface permafrost in the Northern Hemisphere is investigated based on idealized carbon dioxide (CO2) ramp-up (284.7–1138.8 ppm) and symmetric ramp-down model experiments. The results demonstrate that the timing of the minimum permafrost area lags the maximum CO2 concentration for decades, which is also observed in soil temperatures at different depths and active layer thicknesses (ALTs). When the CO2 concentration is reversed to the preindustrial level, the permafrost area decreases by ∼12% relative to the initial conditions, together with additional warming in the ground temperature at the top of the permafrost, indicating the hysteresis of permafrost to CO2 removal. The most profound hysteretic responses occur at high latitudes for soil temperatures owing to Arctic amplification and at the southern margins of the permafrost zones for permafrost and ALT that largely linked to the climate state. Moreover, the sensitivity of permafrost and the associated thermodynamic factors to CO2 change is generally lower during the CO2 ramp-down phase than during the ramp-up phase, likely due to the release of stored heat on land. The results reveal the behaviour of permafrost in response to negative carbon emissions, which is informative for the projections of permafrost towards carbon neutral targets. In addition, the results may provide a reference for permafrost-related tipping points (e.g. releasing long-term stored greenhouse gases and destabilising recalcitrant soil carbon) and risk management in the future.
Preoperative imaging of colorectal liver metastases: what the radiologist and the multidisciplinary team need to know
Authors: Dempsey Philip J , Farrelly Cormac , Cronin Carmel G , Fenlon Helen M 
Published: July 2024

Abstract
The management of patients with colorectal liver metastases (CRLM) has transformed over the past 2 decades. Advances in surgical techniques, systemic therapies, and local treatments have resulted in a paradigm shift. Disease that would once have been considered terminal is now frequently treated aggressively with both a disease-free and overall survival benefit. In line with the expanding range of treatment options, there has been an increase in the volume and complexity of imaging required in the management of these patients to ensure optimal patient selection and outcome. The radiologist plays a pivotal role in interpreting these studies, conveying the relevant information and informing the discussion at multidisciplinary team meetings. The purpose of this review is to provide an update for radiologists on the current surgical management of patients with CRLM highlighting specific imaging information that is required by the multidisciplinary team when assessing resectability and/or the need for additional liver-directed therapies.