bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intralayer spatial carrier separation capability for visible light driven photocatalytic properties of SnGe2N4-layered nanostructure: A first-principles study
Authors: Barma Shrabanti , Hasan Khan Md. Sakib , Islam Md. Rafiqul , Hasan Md. Tanvir 
Published: July 2023

Recently, semiconductor photocatalysts for green hydrogen (H2) fuel require two-dimensional (2D) material with semiconducting direct bandgap and enhanced visible light absorptions. In this study, the first-principles calculation of the 2D layered nanostructure of SnGe2N4 is presented for photocatalysis applications, which has a direct bandgap of 1.73 eV/2.64 eV (Perdew–Burke–Ernzerhof/Heyd–Scuseria–Ernzerhof with generalized gradient approximation) with enhanced optical absorptions. The structure is checked to confirm the chemical formidability and dynamical steadiness by formation energy calculations and phonon dispersions. To attain the tunability of electronic and optical properties, biaxial strains, together with tensile and compressive strains, are incorporated, and it is found that compressive strain widens the bandgap, whereas tensile strain causes bandgap reduction. Biaxial strains also improve the optical absorption and the highest absorption coefficient is obtained at ∼1.47 ⨯ 105 cm−1 for 6% compressive strain, comparable to conventional perovskite materials. However, in the visible spectrum, the highest absorption coefficient is obtained for 6% tensile strain. The calculated photocatalytic band edges suggest that this material has sufficient kinetic overpotential for photo redox at compressive strains in both pH = 7 and pH = 0. In addition, the spatial carrier separation is achieved due to having a large intralayer effective potential deviation of ∼6.96 eV, as well as intralayer spatial atomic group contribution in the valance band maximum and conduction band minimum. Conclusively, the analysis in this study can be a theoretical background of this layered nanostructure as a potent photocatalyst for water splitting.
Conditioning to predators improves survival of stocked Murray cod (Maccullochella peelii) fingerlings
Authors: Hutchison Michael , Butcher Adam , Norris Andrew 
Published: July 2023

Context Following recent major fish kill events, there is increasing interest in stocking Murray cod fingerlings to help fish stocks recover. Strategies that can increase post-release survival of stocked fingerlings are important for conservation stocking of Murray cod and may also have application to other species. Aims The aim of this work was to evaluate whether pre-release predator recognition and avoidance training conferred a survival advantage on stocked Murray cod (Maccullochella peelii) fingerlings. Predator-free release enclosures were also evaluated as a method to improve survival. Methods Fingerlings were trained by exposure to predators and skin extract. Fingerlings were marked with visual implant elastomer (VIE) tags to denote training status and release strategy (trained, untrained, soft release, standard release). Fingerlings were released at three sites in the northern Murray–Darling Basin. Marked fish were recaptured by electrofishing 24 h post-release and quarterly up to 15 months post-release. Key results Trained Murray cod had higher relative survival than did untrained fish. The mean recapture rate of trained fish was twice that of untrained fish. Fingerlings released directly into the waterbody had significantly higher recapture rates than did fingerlings acclimated for 90 min in predator-free enclosures. Conclusions Predator conditioning training provides a survival advantage to stocked Murray cod fingerlings. However, predator-free release enclosures conferred a disadvantage. Implications Pre-release training of Murray cod fingerlings could be beneficial to conservation and recreational-fish stocking programs. We recommend stocking trained cod fingerlings directly into the receiving environment, rather than into soft-release enclosures, so as to maximise their chance of survival.
Didactic audiovisual translation
Authors: Bolaños García-Escribano Alejandro , Ogea Pozo María del Mar 
Published: July 2023

Abstract
This paper discusses the uses and applications of interlingual subtitling for the d/Deaf and hard of hearing (SDH)
in the language classroom and builds on a pilot experiment involving over a hundred students who partook in a didactic initiative
based on the use of SDH.
The present study forms part of the TRADILEX (2020–2023) international project, which draws on action-oriented
approaches to produce didactic sequences of didactic audiovisual translation (AVT) and media accessibility (MA) tasks in
foreign language education (FLE).
A pilot experiment involving didactic interlingual captioning (Spanish into English) was carried out with two
cohorts of students (N = 104) from two undergraduate programmes at a Spanish higher-education institution. The
results shed light on the students’ perception of didactic SDH, as well as the pedagogical benefits of learning English by
captioning video clips. The students boosted their translation skills in different ways, and awareness was raised on the
importance of analysing visual, acoustic and paralinguistic information when localising clips.
Ultimately, this paper examines the potential benefits of action-oriented captioning tasks and advocates for
integrating didactic AVT-MA into the FLE curriculum.
Reverse subtitles in foreign language learning
Authors: Ragni Valentina 
Published: July 2023

Abstract
This paper reports on an eye-tracking study investigating the processing and mnemonic retention of reverse subtitles (foreign-language subtitles presented alongside native-language audio) in learners of Italian as a Foreign language (IFL). 26 English native speakers with a CEFR B2+ Italian level watched an English clip with Italian subtitles in two translation conditions, formal similarity (literal transfer) and formal discrepancy (non-literal transfer). Immediately after watching, they answered recognition and recall questions. This study examines memory, attention allocation and the concept of noticing, which was investigated through triangulation of eye tracking, verbatim recognition and explicit reports. Data analysis methods include generalised mixed-effect modelling. Results revealed that reverse subtitles have acquisitional potential for advanced IFL learners, noticing can be probed experimentally, and formal (dis)similarity appears to have some psychological reality in the mind of the learner, being able to affect both recognition and recall. Evidence of novel word learning as well as deepening of existing knowledge emerged from the analyses, supporting the view that reversed subtitles could be more fruitfully exploited in FLL contexts. The paper presents details of the data analyses, discusses them in relation to Second Language Acquisition (SLA) and psycholinguistic concepts, and draws some recommendations based on the findings.
Periodic analogues of the Kerr solutions: a numerical study
Authors: Peraza Javier , Reiris Martín , Ortiz Omar E 
Published: July 2023

AbstractIn recent years black hole configurations with non standard topology or with non-standard asymptotic behavior have gained considerable attention. In this article we carry out numerical investigations aimed to find periodic coaxial configurations of co-rotating3+1vacuum black holes, for which existence and uniqueness has not yet been theoretically proven. The aimed configurations would extend Myers/Korotkin-Nicolai’s family of non-rotating (static) coaxial arrays of black holes. We find that numerical solutions with a given value for the areaAand for the angular momentumJof the horizons appear to exist only when the separation between consecutive horizons is larger than a certain critical value that depends only onAand|J|. We also establish that the solutions have the same Lewis’s cylindrical asymptotic behavior as van Stockum’s infinite rotating cylinders. Below the mentioned critical value the rotational energy appears to be too big to sustain a global equilibrium and a singularity shows up at a finite distance from the bulk. This phenomenon is a relative of van Stockum’s asymptotic collapse, manifest when the angular momentum (per unit of axial length) reaches a critical value compared to the mass (per unit of axial length), and that results from a transition in the Lewis’s class of the cylindrical exterior solution. This remarkable phenomenon seems to be unexplored in the context of coaxial arrays of black holes. Ergospheres and other global properties are also presented in detail.
Massless Dirac perturbations in a consistent model of loop quantum gravity black hole: quasinormal modes and particle emission rates
Authors: Albuquerque Saulo , Lobo Iarley P , Bezerra Valdir B 
Published: July 2023

Abstract
We consider perturbations of the massless Dirac field in the background of a black hole solution found by Bodendorfer, Mele, and Münch (BMM), using a polymerization technique that furnishes contributions inspired by loop quantum gravity (LQG) Theory. Using the sixth order WKB method, we analyzed its quasinormal modes for several modes, multipole numbers and the two classes of BMM black holes. We also considered the potential that governs these perturbations to analyze the bound on the greybody factor (GF) due the emission rates of particles. As results, we found that the LQG parameters are responsible for raising the potential and the real and imaginary parts of the quasinormal frequencies and decrease the bound on the GF for the two classes of black holes (with more prominent effects for the de-amplification case, which is compatible with previous analyses done for other fields).
Dependence of electron and neutral vapor density distributions on anode mode of high current vacuum arc
Authors: Hirano Yuichi , Kikuchi Ryo , Ejiri Haruki , Kumada Akiko , Hidaka Kunihiko , Inada Yuki 
Published: July 2023

Abstract
The vacuum arc discharge makes transition to a footpoint mode, anode spot type 1 (type 1) mode and anode spot type 2 (type 2) mode under high current conditions. The mode dependence of the electron and metal vapor densities were experimentally quantified using dichroic Shack–Hartmann type laser wavefront sensors. In the type 1 mode, the electron and metal vapor densities were about 2.5 times higher than the footpoint mode. The electron density of the type 2 mode was three times higher than that of the type 1 mode, while significant difference was not found in the metal vapor density. Such higher electron density for the type 2 mode than the type 1 mode was coherent with a previous result obtained by Stark broadening. The present electron and metal vapor density measurement demonstrated that the amount of the electrode erosion was in the following order: footpoint mode < type 1 mode < type 2 mode, which agreed with a previous study.
Reactive molecular dynamics simulations on the pyrolysis of SF6
Authors: Li Haotian , Zeng Fuping , Zhang Mingxuan , Zhu Kexin , Yao Qiang , Tang Ju 
Published: July 2023

Abstract
There are occasionally partial over-thermal faults in gas-insulated equipment inducing SF6 insulating medium to dissociate. It remains unclear at the atomic scale how this chemically stable gas pyrolyzes at high temperatures. To date, there is a lack of micro-level investigations on the molecular behavior of SF6 at high temperatures. In particular, it requires an effective force field to characterize the evolution of the reactions involving SF6 and low-fluorine sulfides. The paper aims to fill the gap in this field by performing reactive molecular dynamics (MD) simulations. In this work, MD simulations were carried out on a system consisting of more than 100 SF6 molecules using a new developed reactive force field The dissociation of SF6 and the subsequent reactions involving low-fluorine sulfides at high temperatures were simulated. The variation of all species in the system were recorded to investigate the effects of the temperature and pressure on the pyrolysis process. The obtained data was then used to establish the relationship between the reaction rate and temperature, thereby formulating Arrhenius law. Furthermore, the trajectories of SF6 and other species were observed at the atomic level. Snapshots of key frames during the reaction helped us to explore the interaction mechanism of free F atoms with SF6 molecules and SF5 fragments. It was found that the early dissociation of SF6 mainly comes from the thermal vibrations of the molecule itself, while the later decomposition of SF6, SF5 and others is related to high-speed collisions by F atoms. This work contributes to the understanding of the mechanism of SF6 pyrolysis and lays a foundation for more MD investigations.
Development of IOT-based low-cost MEMS pressure sensor for groundwater level monitoring
Authors: Barzegar Milad , Blanks Stan , Gharehdash Saba , Timms Wendy 
Published: July 2023

Abstract
Groundwater level monitoring is critical to the protection and management of groundwater resources. Properly designed and executed instrumentation can play an important role in increasing the quality and reliability of collected data and reducing total monitoring costs. The efficiency of the instrumentation depends mainly on the accuracy and reliability of the installed sensors. This study presents the testing and application of a cost-effective pressure sensor (0–689 kPa range) for water level monitoring based on microelectromechanical system (MEMS) technology and the internet of things concept. The sensor performance, in terms of accuracy, precision, repeatability, and temperature, was investigated in laboratory columns (with constant water level, increasing and decreasing water levels at various rates) and in situ conditions in an observation bore (with natural groundwater level fluctuations). The results show that the MEMS sensor is capable of providing a reliable and adequate monitoring scheme with an accuracy of 0.31% full scale (FS) (2.13 kPa).
Simple two-layer dispersive models in the Hamiltonian reduction formalism
Authors: Camassa R , Falqui G , Ortenzi G , Pedroni M , Vu Ho T T 
Published: July 2023

Abstract
A Hamiltonian reduction approach is defined, studied, and finally used to derive asymptotic models of internal wave propagation in density stratified fluids in two-dimensional domains. Beginning with the general Hamiltonian formalism of Benjamin (1986 J. Fluid Mech.
165 445–74) for an ideal, stably stratified Euler fluid, the corresponding structure is systematically reduced to the setup of two homogeneous fluids under gravity, separated by an interface and confined between two infinite horizontal plates. A long-wave, small-amplitude asymptotics is then used to obtain a simplified model that encapsulates most of the known properties of the dynamics of such systems, such as bidirectional wave propagation and maximal amplitude travelling waves in the form of fronts. Further reductions, and in particular devising an asymptotic extension of Dirac’s theory of Hamiltonian constraints, lead to the completely integrable evolution equations previously considered in the literature for limiting forms of the dynamics of stratified fluids. To assess the performance of the asymptotic models, special solutions are studied and compared with those of the parent equations
Unfolding the Hong–Ou–Mandel interference between heralded photons from narrowband twin beams
Authors: Laiho K , Dirmeier T , Shafiee G , Marquardt Ch 
Published: July 2023

Abstract
The Hong–Ou–Mandel (HOM) interference is one of the most intriguing quantum optical phenomena and crucial in performing quantum optical communication and computation tasks. Lately, twin beam emitters such as those relying on the process of parametric down-conversion (PDC) have become confident sources of heralded single photons. However, if the pump power is high enough, the pairs produced via PDC—often called signal and idler—incorporate multiphoton contributions that usually distort the investigated quantum features. Here, we derive the temporal characteristics of the HOM interference between heralded states from two independent narrowband PDC sources. Apart from the PDC multiphoton content, our treatment also takes into account effects arriving from an unbalanced beam splitter ratio and optical losses. We perform a simulation in the telecommunication wavelength range and provide a useful tool for finding the optimal choice for PDC process parameters. Our results offer insight in the properties of narrowband PDC sources and turn useful when driving quantum optical applications with them.
Chemical vapor reaction synthesis and photoelectronic properties of CuS and Cu3SbS4 thin films
Authors: Xiao Liu , Liu Zhiying , Feng Wenlin 
Published: July 2023

Abstract
Chemical vapor reaction is a simple and efficient experimental means of preparing metal sulphide films. Through systematically studying the effect of vulcanisation temperature on the growth of copper sulfide (CuS) thin film. The copper antimony sulfide (Cu3SbS4) thin film was obtained by further vulcanized Sb/Cu mental film. The structure and optical properties of the as-prepared films were characterized by x-ray diffraction, Raman and photoluminescence spectra. The hexagonal structure of CuS film was confirmed and Cu3SbS4 grew preferentially along the (112) crystal plane. The surface grains of CuS and Cu3SbS4 films were finally condensed into spheres. The content of S and the resistance of the films increase with the increase in temperature, but the bandgap of the films will be decreased. The bandgap of Cu2−xS films prepared at 195 °C−350 °C is in the range of 2.2–2.5 eV and that of Cu3SbS4 thin films prepared at 350 °C is 1.77 eV, and has good absorption in the visible light range. In addition, The Hall effect measurement indicated CuS and Cu3SbS4 films have p-type semiconducting behavior. The carrier concentration and mobility are 2.45 × 1021 cm−3 and 1.28 cm2 Vs−1 for CuS, and 4.30 × 1017 cm−3 and 185.93 cm2 Vs−1 for Cu3SbS4, respectively. The I-T tests show that the CuS and Cu3SbS4 thin films have photoconductive properties.
Cosmological inference from the EFTofLSS: the eBOSS QSO full-shape analysis
Authors: Simon Théo , Zhang Pierre , Poulin Vivian 
Published: July 2023

Abstract
We present cosmological results inferred from the effective-field theory (EFT) analysis of the full-shape of eBOSS quasars (QSO) power spectrum.
We validate our analysis pipeline against simulations, and find overall good agreement between the analyses in Fourier and configuration space.
Keeping the baryon abundance and the spectral tilt fixed, we reconstruct at 68% CL the fractional matter abundance Ω
m
, the reduced Hubble constant h, and the clustering amplitude σ
8, to respectively Ω
m
= 0.327 ± 0.035, h = 0.655 ± 0.034, and σ
8 = 0.880 ± 0.083 from eBOSS QSO alone.
These constraints are consistent at ≲ 1.8σ with the ones from Planck and from the EFT analysis of BOSS full-shape. Interestingly S
8 reconstructed from eBOSS QSO is slightly higher than that deduced from Planck and BOSS, although statistically consistent.
In combination with the EFT likelihood of BOSS, supernovae from Pantheon, and BAO from lyman-α and 6dF/MGS, constraints improve to Ω
m
= 0.2985 ± 0.0069 and h = 0.6803 ± 0.0075, in agreement with Planck and with similar precision.
We also explore one-parameter extensions to ΛCDM and find that results are consistent with flat ΛCDM at ≲ 1.3σ.
We obtain competitive constraints on the curvature density fraction Ω
k
= -0.039 ± 0.029, the dark energy equation of state w
0 = -1.038 ± 0.041, the effective number of relativistic species N
eff = 3.44+0.44
-0.91 at 68% CL, and the sum of neutrino masses ∑ mν
< 0.274 eV at 95% CL, without Planck data.
Including Planck data, contraints significantly improve thanks to the large lever arm in redshift between LSS and CMB measurements. In particular, we obtain the stringent constraint ∑ mν
< 0.093 eV, competitive with recent lyman-α forest power spectrum bound.
Research on corrosion resistance of ship propeller’s coating fabricated by laser
Authors: Liu Yu , Xu Tianhao 
Published: July 2023

Abstract
A novel method for the additive manufacturing was proposed to fabricate Ni-WC coating. The laser power and scanning speed were 1400 W and 200 mm/min-1, respectively. The microstructure, composition, hardness, friction properties and corrosion resistance were analyzed. The experimental results exhibit the coating’s average hardness is 614.3 HV0.5. It is about 3.1 times higher than the copper substrate. The wear rate of Ni-WC coating is only 9.7×10-5 mm3·N-1·m-1 due to the existence of hard phase and WC reinforced phase. The Ni-WC coating’s corrosion current density is 2.34×10-7 mA·mm-2, which shows a good corrosion resistance than the substrate. The performance of the coating is improved compared with the substrate. The bonding is good without defects.
Research on the influence of mortar powder content on the performance of recycled concrete
Authors: Lu Zhaoyang , Zhang Baiquan , Yan Baobao , Yang Wu 
Published: July 2023

Abstract
In order to improve the utilization rate of mortar powder in concrete, the influence of mortar powder on the workability, compressive strength, impermeability, and volume stability of recycled concrete was studied by using the control variable method. The results show that recycled aggregate can improve the workability and mechanical properties of recycled concrete by containing the appropriate amount of mortar powder. The content of mortar powder is less than 5%, the workability and compressive strength of recycled concrete will gradually improve with the increase of the content. When the content of fine mortar powder exceeds 5%, the workability and mechanical properties of concrete will deteriorate to some extent. The mortar powder can improve the impermeability and volume stability of concrete to a certain extent. When the content is 8%, the 56d chloride diffusion coefficient of concrete is 24.5 × 10-13 m2/s, which is 52.8% lower than that of concrete without mortar powder.
Study on Fluorescence Sensing of 2D Calcium Metal-Organic Frameworks to Tetracycline Hydrochloride
Authors: Wang Sibo , Sun Bo , Su Zhongmin , Sun Jing , Li Xiao 
Published: July 2023

Abstract
Detection methods based on changes in fluorescence intensity have been widely studied because of their convenience, fast response, and high sensitivity. In many fluorescent materials, luminescent metal-organic frameworks(LMOF) exhibit the characteristics of simple preparation and recyclability, which has become a new type of detection material. Thus, a two-dimensional structure is prepared by combining amide functionalization ligand with alkaline earth metal calcium (namely CUST-620), not only the fluorescent intensity is improved, but also the thermal stability is ideal. The excellent luminescence properties and fluorescent sensing of antibiotics are commonly used in aqueous environments. The results present significant quenching occurring when tetracycline hydrochloride is added to CUST-620. It is expected to become a novel antibiotic fluorescent sensor.
Study on Preparation and Properties of a liquid segregation resistance agent
Authors: Lin Zeyu 
Published: July 2023

Abstract
New concrete often deteriorates performance, segregation, water secretion, and other phenomena ₒ Concrete workability and pumpability are reduced, and concrete segregation resistance agents can effectively solve the problem, and effectively improve the construction performance of fresh concrete. This study shows that acrylamide is 3.40%, AMPS is 1.50%, H2O2 is 0.06%, and suspension block is 0.2%. The optimum performance of the best performing liquid segregation resistance agent allows for a significant reduction in the amount of liquid segregation resistance agent used while the performance of the concrete remains unchanged.