bluuebunny/crossref_metadata_2025_split huggingface dataset:
“We are a territory, a territory of struggles”: Community and Resistance Tourism in a Territorial Museum on the Outskirts of São Paulo
Authors: Cardoso Camila , Peria Pedro Vianna Godihho 
Published: December 2023

Summary
The case presents an interpretation of the actions of valorization of cultural heritage mobilized by the political-cultural collective Comunidade Cultural Quilombaque. Active in the neighborhood of Perus, in the north-western part of the municipality of São Paulo, since 2005, Quilombaque shows itself to be a pole of agglutination of several artistic and political manifestations and other groups in the territory. From the consolidation of the Territorial Museum Tekoa Jopo’i and the Queixadas Agency, they have elaborated a path of trails that go through the neighborhood’s heritage that is marginalized by public preservation policies. Semi-structured interviews were conducted with central agents of the movement, in addition to participant observation on community tourism trails. The symbolic mediation promoted by the Museum educators brings out narratives of struggle eclipsed by the official policies of cultural heritage. The keys of solidarity and sharing operate by allowing a horizontal use of the riches organized by the Territorial Museum. The action of the Quilombaque Cultural Community transits in a fleeting limit between tourism and resistance, its tourism shows not only the resistance of the territory but is also organized with the community in such a way as to resist the tendencies of predatory tourism. On the one hand, the visits amplify voices silenced by hegemonic narratives. On the other hand, the very conception and organization of the trails are done in opposition to other models of tourism and predatory development.

Information
© The Authors 2023
TiO2/SiC supported catalyst for efficient thermocatalytic conversion of SF6 waste gas
Authors: Zeng Fuping , Cai Rijian , Li Chen , Xie Binquan , Deng Baojia , Yao Qiang , Tang Ju 
Published: December 2023

Abstract
The harmless treatment of SF6 waste gas is currently a highly concerned focus in the power industry. This article used a new supported catalyst, TiO2/SiC, to study the thermocatalytic conversion of SF6 waste gas. Firstly, the catalytic activity of TiO2/SiC was tested, and it was found that the catalytic efficiency of TiO2/SiC was 3.73 times that of TiO2 at 700 °C; Subsequently, the optimal catalytic conditions for TiO2/SiC were figured out by experiments, which were conducted under different initial pressures and oxygen concentrations. It was found that the catalytic efficiency of TiO2/SiC was highest when the initial pressure was 0.16 MPa and the concentration rate of SF6 and O2 was 1:4. Under these conditions, the total conversion of SF6 by TiO2/SiC reached 288 ml in 6 h, and the average catalytic conversion efficiency reached 33 ml g−1 h−1. It was also found that when the conversion of SF6 reached 110–130 ml, the catalytic activity of TiO2/SiC decreased; the oxygen concentration has a significant influence on the products: the higher the oxygen concentration is, the higher the production of SO2F2 rate in the product, while the lower that of SO2 rate. Finally, in order to know the catalytic mechanism of TiO2/SiC, XPS tests were conducted on the catalysts before and after the experiment. According to the XPS spectrum, gaseous products would react with TiO2 and generate TiF4 and Ti(SO4)2. According to the test results, the catalytic mechanism of TiO2/SiC was summarized in this article. It explained the catalytic effect of TiO2/SiC from two aspects: promoting the defluorination of SF6 and consuming low-fluorinated sulfides. The empirical conclusions of this article provide a theoretical reference for the harmless treatment of SF6 waste gas.
Effect of atmospheric environment on the stability of secondary electron emission from magnesium oxide and alumina surfaces
Authors: Lian Zhuoxi , Zhu Xiangping , Wang Dan , Meng Xiangchen , He Yongning 
Published: December 2023

Abstract
MgO and Al2O3 are two typical ceramics with high secondary electron yield (SEY) and are widely applied in electron multiplier devices as dynode coating. However, dynodes in multipliers are inevitably exposed to various environments, degenerating their SEY performance. To specify the influence of the atmospheric environment on SEY for MgO and Al2O3 ceramics, we conducted environmental stability experiments on MgO and Al2O3 nanofilms. By exposing the nanofilms fabricated by atomic layer deposition to air for certain durations, it was found that although the MgO film possessed high SEY, its SEY decreased significantly as the storage duration increased, specifically, its SEY peak value (δ
m) decreased from 5.97 to 3.35 after 180 d. Whereas the SEY of the Al2O3 film changed very little with the storage duration extending, its δ
m decreased from 4.01 to 3.70 after 180 d, indicating the Al2O3 film had good SEY environmental stability. To reveal the mechanism of SEY degradation, the modification analysis of surface composition was implemented. It was found that the surface of MgO film underwent degradation besides unavoidable contamination, generating Mg(OH)2 and MgCO3. Whereas, there is no chemical reaction occurred on the Al2O3 surface. Combining the advantages of high SEY of MgO and good environmental stability of Al2O3, several Al2O3/MgO double-layer nanofilms were prepared. The δ
m value of 20 nm MgO nanofilms covered by 1 nm Al2O3, decreased from 4.90 to 4.56, with a reduction of only 6.94% after 180 d. The results showed that the Al2O3 film achieved effective protection of the MgO film. The SEY environmental stability of the double-layer structure was significantly improved, and the effect of thickness on SEY was theoretically interpreted. This work makes significant sense for understanding the influence of the environment on the SEY for MgO and Al2O3, which has potential applications in electron multipliers.
Field-induced Bose–Einstein condensation in zigzag spin chain KGaCu(PO4)2
Authors: Chen R , Hu H J , Qu Z , Li T , Liu C B , Wang C L , Sun S J , Dong C , Qiu Y 
Published: December 2023

Abstract
Single crystals of GaKCu(PO4)2 were synthesized using the hydrothermal method, and subsequent measurements of specific heat, magnetic susceptibility, and high-field magnetization were performed. A broad peak is observed in the magnetic susceptibility and specific heat curves, with the maximum values appearing at about 11.5 K and 5.29 K, respectively. The highest maximum peak value of susceptibility is observed when the magnetic field is applied along the c-axis, followed by the a-axis, b-axis, and polycrystalline samples. These indicate that the system exhibits one-dimensional magnetism and the magnetic easy axis is the c axis. The magnetization at 2 K reveals the occurrence of a field-induced Bose–Einstein condensation (BEC) phase within the magnetic field range of approximately 8−12 T. High-field magnetization up to 40 T indicates that the compound reaches magnetization saturation as the field exceeds H
s = 12 T. Through systematic measurements, a field-temperature (H−T) phase diagram was constructed, and dome-like phase boundaries were observed. The findings suggest that GaKCu(PO4)2 is a spin gap system and a promising candidate for studying BEC of magnons due to its phase transition boundary occurring at low magnetic fields.
High temporal resolution of pedestal dynamics via machine learning on density diagnostics
Authors: Ferreira Diogo R , Gillgren Andreas , Ludvig-Osipov Andrei , Strand Pär ,   JET Contributors
Published: December 2023

Abstract
At the Joint European Torus, the reference diagnostic to measure electron density is Thomson scattering. However, this diagnostic has a low sampling rate, which makes it impractical to study the temporal dynamics of fast processes, such as edge localized modes. In this work, we use machine learning to predict the density profile based on data from another diagnostic, namely reflectometry. By learning to transform reflectometry data into Thomson scattering profiles, the model is able to generate the density profile at a much higher sampling rate than Thomson scattering, and more accurately than reflectometry alone. This enables the study of pedestal dynamics, by analyzing the time evolution of the pedestal height, width, position and gradient. We also discuss the accuracy of the model when applied on experimental campaigns that are different from the one it was trained on.
Effects of hydrogen isotope species on ITG microturbulence in LHD
Authors: Qin Y Q , Chen Y C , Sun G Y , Nicolau J , Lin Z 
Published: December 2023

Abstract
The linear and nonlinear effects of hydrogen isotope species on ion temperature gradient (ITG) instability in the Large Helical Device (LHD) stellarator are studied using radially global gyrokinetic simulation. We found that the coupling range of linear toroidal harmonics depends on the ion mass of the hydrogen isotope. The growth rates of ITG mode are almost the same for H, D, and T plasmas, indicating a gyro-Bohm scaling of ion-mass dependence. The nonlinear electrostatic simulations show that the zonal flow breaks the radially elongated eigenmode structures and reduces the size of the turbulence eddies, which suppresses the turbulence and the ion heat transport in the LHD. The turbulence amplitude without the zonal flow is almost the same for H, D, and T plasmas, while it decreases with increasing ion mass of the hydrogen isotope when the zonal flow is present. The reduction of the turbulent transport with larger ion mass is mostly due to the enhancement of zonal flows by larger ion mass. The ion heat conductivity deviates from the gyro-Bohm scaling for both cases with and without the zonal flow.
Mechanical properties and corrosion resistance of porous nickel titanium alloys synthesized in different reactive atmospheres
Authors: Marchenko E S , Shishelova A A , Baigonakova G A , Polyakov N A , Botryakova I G 
Published: December 2023

Abstract
In the existing studies on the self-propagating high temperature synthesis of titanium nickelide, the main attention has been paid to the study of the influence of heating rate, synthesis start temperature, powder particle size, reaction gas pressure on the structure and properties of NiTi intermetallides. However, the influence of the reactive medium on the formation of surface intermetallic oxynitrides and the properties of the NiTi alloys has not been considered. In the present work, porous titanium nickelide alloys have been obtained by self-propagating high-temperature synthesis in two different reactive atmospheres, argon and nitrogen. The studies show that NiTi-(N) alloys synthesised in the nitrogen reaction atmosphere contain a large amount of brittle secondary Ti2Ni+Ti4Ni2O(N) phases which, in contrast to NiTi-(Ar), are predominantly distributed as small particles. The intergranular Ti2Ni phases in the NiTi-(Ar) alloy synthesised in the argon reaction atmosphere are observed as regions of extensive accumulation of Ti2Ni phase. The reactive nitrogen environment resulted in dispersion of the Ti2Ni phase and lower compressive strength of the porous NiTi-(N) alloy compared to NiTi-(Ar). However, both alloys have a compressive strength greater than human cancellous bone and can be successfully used for intraosseous implantation. At the same time, the porous alloys obtained in different reaction media are passive to electrochemical corrosion and resistant to dissolution in biological media containing chlorine.
Temporal evolution of a driven optomechanical system in the strong coupling regime
Authors: Medina-Dozal L , Récamier J , Moya-Cessa H M , Soto-Eguibar F , Román-Ancheyta R , Ramos-Prieto I , Urzúa A R 
Published: December 2023

Abstract
We obtain a time-evolution operator for a forced optomechanical quantum system using Lie algebraic methods when the normalized coupling between the electromagnetic field and a mechanical oscillator, G/ω

m
, is not negligible compared to one, i.e., the system operates in the strong-coupling regime. Due to the forcing term, the interaction picture Hamiltonian contains the number operator in the exponents, and in order to deal with it, we approximate these exponentials by their average values taken between initial coherent states. Our approximation is justified when we compare our results with the numerical solution of the number of photons, phonons, Mandel parameter, and the Wigner function, showing an excellent agreement. In contrast to other works, our approach does not use the standard linearized description in the optomechanical interaction. Therefore, highly non-classical (non-Gaussian) states of light emerge during the time evolution.
Probing bounce dynamics via Higher-Order Gauss-Bonnet modifications
Authors: Ilyas M , Khan Fawad , Ahmad Iftikhar , Eman Rubab Syeda 
Published: December 2023

Abstract
In this paper, we focus on the Gauss-Bonnet gravity theory, which includes higher curvature corrections to the Einstein-Hilbert action. We investigate the possibility of obtaining a bouncing cosmology in this modified theory of gravity, where the Universe contracts until a minimum scale factor and then expands again. We examines four Higher-Order Gauss-Bonnet Gravity theory models within the FLRW formalism, emphasizing the Universe’s bouncing behavior to resolve Big-Bang cosmology’s singularity problem. We establish cosmological constraints over cosmic time, investigate bounce conditions, reconstruct Higher-Order Gauss-Bonnet Gravity for a hyperbolic expansion law, and extend this reconstruction using the red-shift parameter to derive cosmological parameters signifying accelerated Universe expansion. The stability of these models is subsequently evaluated through an arbitrary speed of sound function for late-time stability assessment. Our results suggest that the Gauss-Bonnet gravity theory can provide a viable mechanism for a non-singular bounce in the early universe.
Role of Mo thickness in growth of nanostructured MoO3 and their optical sensing properties
Authors: B Sharmila , Dwivedi Priyanka 
Published: December 2023

Abstract
The main objective of the present work is to investigate the role Mo thickness in growth of nanostructured MoO3 and their application for optical sensors like photodetectors. The devices were fabricated using standard scalable microfabrication techniques. MoO3 was synthesized by Mo thin film deposition using sputtering followed by dry oxidation at 550 °C. Further, these samples were tested as photodetectors for visible regions. The test results confirm that the devices are more sensitive towards 450 nm. The photodetector made on 80 nm Mo thickness exhibited a higher responsivity of 730 mA W–1, higher detectivity of 2.47 × 1011 Jones, and higher photo to dark current ratio (PDCR) of 1.33 × 102 compared to other tested samples. Moreover, the optimized photodetector showed higher repeatability and a faster speed of 13/11 ms. These developed photodetectors could be vital for the visible light optical sensing era.
Non-thermal WIMP production from higher order moduli decay
Authors: Banik Amitayus , Drees Manuel 
Published: December 2023

Abstract
In a non-standard cosmological scenario heavy, long-lived particles, which we call
moduli, dominate the energy density prior to Big Bang Nucleosynthesis. Weakly Interacting Massive
Particles (WIMPs) may be produced non-thermally from moduli decays. The final relic abundance then
depends on additional parameters such as the branching ratio of moduli to WIMPs and the modulus
mass. This is of interest for WIMP candidates, such as a bino-like neutralino, where thermal
production in standard cosmology leads to an overdensity. Previous works have shown that the
correct dark matter (DM) relic density can then still be obtained if the moduli, with mass less
than 107 GeV, decay to WIMPs with a branching ratio of less than 10-4. This
upper bound could easily be violated once higher order corrections, involving final states with
more than two particles, are included. We compute the branching ratios of three- and four-body
decays of a modulus into final states involving two DM particles for general couplings. We then
apply these expressions to sparticle production within the Minimal Supersymmetric Standard Model (MSSM) with neutralino DM. We find that this upper bound on the branching ratio can be satisfied
in simplified models through an appropriate choice of as yet undetermined couplings. However, in
the MSSM, it requires sparticle masses to be very close to half the modulus mass, in contrast to
the idea of weak-scale supersymmetry.
Influence of photodynamic action on pure and mixed cultures of gram-negative bacteria: related to growth mechanisms
Authors: de Lima Rebeca V , Soares Jennifer M , Blanco Kate C , Bagnato Vanderlei S 
Published: December 2023

Abstract
Gram-negative bacteria present a significant challenge to conventional treatments due to their structurally complex cell walls, setting them apart from their gram-positive counterparts. These structural distinctions, coupled with various antimicrobial resistance mechanisms, make them highly resilient. Photodynamic inactivation (PDI) has emerged as a promising technique to address this challenge, capitalizing on oxidative stress induced by the synergy of light and a photosensitizer (PS). In this study, we delved into the application of PDI and its repercussions on both Klebsiella pneumoniae and Escherichia coli bacteria, in both pure cultures and mixed populations. Our investigation encompassed an analysis of changes in growth curves when influenced by photodynamic and the response to the susceptibility to gentamicin. Methods: Various concentrations (50 μM, 100 μM, and 150 μM) of synthetic curcumin solutions served as PS in treatment groups. Additionally, solvents such as dimethyl sulfoxide and 0.1% sodium dodecyl sulfate (SDS) were evaluated to enhance PS mobility and absorption. Growth curves for pure and mixed cultures were established, both pre- and post-PDI, and in the presence of 0.1% SDS. Blue light irradiation at 30 J cm−2 and 450 nm was employed. The minimum inhibitory concentration (MIC) of the antibiotic was determined with and without PDI + SDS. Results: While PDI did not achieve optimal bacterial reduction for these strains, it did introduce oxidative damage that has the potential to affect other critical aspects of the temporal progression of cultures and their responses to antibiotics. Conclusion: This study shows that even with the minimal impact of PDI in the presence of 0.1% SDS, observable alterations in bacterial growth profiles and MIC values occur and can be used in favor of treatment involving such infections.
Generation Coordination and Planning of New Power System Considering Industry Hydrogen Load
Authors: Shen Yuming , Hu Xudong , Wang Xuli , Zhou Yuanke , Guo Wenzhang , Xia Kai , Yang Shujing 
Published: December 2023

Abstract
Considering the impact of industrial hydrogen load on the consumptive capacity of new energy, it is necessary to research the generation coordination and planning of new power systems considering industry hydrogen load. Firstly, considering the energy consumption in the hydrogen production and storage process, as well as the energy storage for hydrogen addition/use, hydrogen load transfer, and interruptible flexibility, an equivalent electrical load conversion model for multiple forms of hydrogen loads is established. Secondly, considering the impact of industrial hydrogen load on the absorption capacity of new energy, the investment decision-making problem of power supply, hydrogen production, and storage equipment is unified with the operation simulation problem of the system at the planning level, to minimize the annual cost of the system. To reduce the complexity of the model, the proposed model plan to the expansion capacity of various types of power sources from the perspective of power types. Finally, by using actual data from a power grid in a certain province as an example, the results verified the rationality and effectiveness of the model compared with the power grid planning without hydrogen load.
The Research on the Improvement of the Zero-Sequence Relay for the Low Resistance Grounded Power Grid
Authors: Dong Kaida , Jin Zhen , Shi Yong 
Published: December 2023

Abstract
In the low resistance grounded power grid, when a high-impedance grounding fault occurs at a distribution line, the zero-sequence fault current is not big enough to make the zero-sequence over-current relays trip because of the setting limitations, and thus the earth fault would exist for a long time with no alarm signal. As a result, there would be a hidden danger that the grounding fault might cause further faults or cause harm to personal safety. To solve the problem, in the paper, the characteristics of zero-sequence components when the high-impedance grounding fault occurs are analyzed, and the practicability and the deficiency of the directional zero-sequence over-current relay are pointed out. Based on the analysis, an improved zero-sequence relay with the resistance-capacitance ratio restriction is raised. The resistance-capacitance ratio restriction condition is based on the different structures of the resistant part and the capacitive part of zero-sequence currents, and the faulted line can be identified with the resistance-capacitance ratio criterion. The resistance-capacitance ratio criterion is not influenced by the polarity of the voltage transformer (VT) and current transformer (TA) and can avoid the influence caused by the reversed polarity of the exclusive zero-sequence TA. With the improved zero-sequence over-current relay with the resistance-capacitance ratio restriction, the ability to identify high-impedance grounding faults can be improved, and the fault area can be isolated quickly, to guarantee the reliability and safety of the operation in power grids.
Examination and Repair of Technology of Equipment Status Based on SNN in Intelligent Substation
Authors: Yang Guang , Liu Keyue , Yu Hanshen , Li Chunbo , Zeng Ming 
Published: December 2023

Abstract
Aiming at the problems of poor accuracy and low reliability in equipment evaluation and decision results of examination and repair (E&R) for the traditional power system (P-S) state, an E&R technology of intelligent substation (INSU) equipment state based on SNN is proposed. Firstly, based on the operational status of devices and systems in the intelligent substation (INSU), the E&R risks of devices and systems in INSU are evaluated through analysis of device availability. Then, by analyzing traditional CNN and improved SNN networks, a P-S state E&R model for power equipment detection based on SNN is proposed. Finally, a simulation experiment was conducted to compare and analyze the proposed SNN-based INSU device state E&R model with other methods. The results show that the proposed method has a lower system risk in the E&R process and is superior to other comparison methods.
Neuronal axon action circuit based on memristor
Authors: Yang Zheming , Li Lei , Wang Hongyu , Wang Nuo , Chen Yulong 
Published: December 2023

Abstract
Memristors have been increasingly valued by researchers nowadays, and using the unique properties of memristors to build brain-like large-scale integrated circuits has great potential in the development direction of high energy efficiency peak neural networks in the future. Simulating brain function has far-reaching implications for the development of computers. This paper describes a synaptic circuit based on a memristor and amplifier to simulate axonal mounds’ action potential. A Cadence simulator was used to simulate synaptic current flowing out from dendrites in axonal colliculus and the relationship between the membrane voltage and the output voltage with time. This circuit can greatly reduce the mismatch of the circuit and has good matching characteristics. It also reduces the area of the circuit.