bluuebunny/crossref_metadata_2025_split huggingface dataset:
First-principles investigation on the structure, electronic, mechanical and optical properties of silver based perovskites AgBX3 (B=Be, Mg; X=Br and I)
Authors: Zhang JingYi , Yu Jianghao , Chen Yan , Chen Shanjun , Liu Jin , Li Song , Shi Zaifa 
Published: November 2024

Abstract
The structure, mechanical, electronic and optical properties of Ag-based halides AgBX3 (B = Be, Mg; X = Br, I) were studied using first-principles approach for the first time. The elastic constants reveal that these materials are mechanical stability. The results of Pugh’s ratio, bulk modulus, Poisson’s ratio, and anisotropy coefficients exhibit that these compounds are ductility, anisotropy, and ionic properties, and the hardness of beryllium compounds is larger than that of magnesium compounds. The band structure and density of states for AgBX3 show that AgBeBr3, AgMgBr3, and AgMgI3 compounds are indirect bandgap semiconductors, while AgBeI3 has metallic property. The valence band of the AgBX3 is mainly dominated by Ag-d and X-p orbital electrons, and the conduction band is composed predominantly of B-p and X-s orbital electrons. The optical properties of AgBX3 were analyzed in the energy range 0–30 eV. It is found that AgBX3 has high transparency in visible light range and good ultraviolet light absorption ability, which reflects that AgBX3 can be employed as window and lens materials in visible light range and ultraviolet optical devices.
Optical, thermal, and radiation shielding characterization of bismuth-modified zinc-lithium-tungsten-borate glass
Authors: Usman Iliyasu , Mohd Sanusi Mohamad Syazwan , Ahmad Nor Ezzaty , Thabit Hammam Abdurabu 
Published: November 2024

Abstract
This study examines the optical, thermal, and radiation attenuation properties of zinc-tungsten-lithium-borate glass modified with Bi2O3, synthesized using melt-quench techniques. The resulting glass samples display a significant physical property, with density increasing from 3.22 g cm−3 to 4.84 g cm−3 as Bi2O3 concentration increase from 2 to 16 mol%. The optical band gap narrows from 2.9 eV to 2.55 eV, while the refractive index increases from 2.42 to 3.49, indicating a shift in absorption to lower energy levels. Higher Bi2O3 concentrations reduce optical non-linearity while enhancing the linear optical properties of the synthesized glasses. The formation of orthoborate anions suggests that Bi3+ ions in the glasses act as network modifiers, disrupting the borate framework and introducing structural disorder. Additionally, thermal properties, including glass transition temperature (

T

g

), crystallization temperature (

T

c

), and melting temperature (

T

m

), decrease with increasing Bi2O3 concentration. The radiation shielding effectiveness is significantly improved, with the linear attenuation coefficient (LAC) increasing from 0.56 cm−1 to 1.35 cm−1 at 0.284 MeV and from 0.127 cm−1 to 0.186 cm−1 at 2.506 MeV as Bi2O3 content rises from 2 mol% to 16 mol%. For a glass thickness of 1 cm, the radiation protection efficiency reaches approximately 74% for a photon energy of 0.284 MeV in the sample doped with 16 mol% Bi2O3. The glass’s remarkable combination of high transparency and effective radiation attenuation, positions it as a promising option for radiation shielding applications.
Interface dynamics in electroosmotic flow systems with non-Newtonian fluid frontiers
Authors: Chen Di-Lin , Liu Shu-Yan , Luo Kang , Yi Hong-Liang , Yang Chun 
Published: November 2024

Abstract
Microfluidic applications involving liquid manipulation, selective membranes, and energy harvesting strongly emphasize the importance of the electrokinetic phenomenon, which is widely used at multiple fluid and electrochemical interfaces. However, critical scientific issues that address multifield coupling and multiscale physics have not been well addressed in non-Newtonian fluids. In this paper, electrical field–fluid flow–ion transport coupling is numerically implemented in two mainstream problems, i.e., induced electroconvection phenomena at ion-selective interfaces and induced charge electroosmosis in polarized cylinders. The effects of different non-Newtonian rheological properties, which are absent in Newtonian fluids, on the interfacial dynamics, instability and ion transport are examined. The results reveal that the non-Newtonian rheology significantly modulates the statistical data and interfacial phenomena. Generalized power-law fluids alter velocity and interfacial charge profiles, with shear thinning enhancing ion transport to lower overlimiting current thresholds and shear thickening broadening the limiting current region (with hindered ion transport). In Boger-type Oldroyd-B fluids, the addition of polymer decreases the velocity amplitude and increases the interface resistance. At low voltages, polymer viscoelasticity minimally affects the ohmic and limiting regions, but under convection-dominated flow, different rheological parameters, such as the viscosity ratio, Weissenberg number, anisotropic parameter, and electrohydrodynamic coupling constants, enable controllable regulation of ion transport behavior across a wide range. Finally, this paper states that modulated electroosmosis by complex charged polymers is the future cutting edge. The relevant results supplement the non-Newtonian physics of electrokinetic systems and provide guidance for the design and operation of microfluidic devices.
Propagation properties of two types of sinc Schell-model beams in oceanic turbulence
Authors: Tian Liancheng , Zhou Jianyang 
Published: November 2024

Abstract
The evolution of two types of sinc Schell-model (SSM) beams, each considered with both circular and rectangular symmetries, is investigated during their propagation in oceanic turbulence. The expressions for the spectral intensity and spectral coherence of the transmitted optical field are derived using the extended Huygens–Fresnel principle. Based on these expressions, numerical simulations are carried out to explore how source and turbulence parameters influence the transmitted field. The results demonstrate that the spectral intensity distribution of the SSM1 beam evolves from an initial Gaussian profile into a circular or rectangular flat-topped shape during propagation, while the SSM2 beam develops into a ring-shaped or array-like pattern. As the dissipation rate of turbulent kinetic energy decreases, or the mean square temperature dissipation rate and the strength of temperature and salinity fluctuations increase, the energy of these beams disperses from its concentrated regions to the surrounding areas, causing the characteristic intensity distributions to become blurred. Additionally, the coherence of these beams exhibits oscillatory distributions, with the SSM2 beam showing stronger oscillations compared to the SSM1 beam and displaying greater sensitivity to changes in turbulence parameters. The intensity and coherence distributions are also affected by source parameters, which play a dominant role at shorter propagation distances. However, as the distance increases, turbulence parameters gradually become the primary influence. The results presented here may be applied to oceanic optical communication and remote sensing.
Electron scattering study on acetic acid and methyl formate
Authors: Bhavsar Nirali , Vinodkumar P C , Mason Nigel , Vinodkumar Minaxi 
Published: November 2024

Abstract
In this work we report the results of a theoretical calculation of the elastic, differential scattering, and excitation cross-sections on electron interactions with the C2H4O2 isomers (methyl formate and acetic acid) using the ab initio R-matrix method in the energy range of 0.1–20 eV. The computations were performed using static exchange (SE), static exchange plus polarization (SEP) and Close-Coupling (CC) models with electronic structure calculation for these molecules performed using GAMESS. In the electron scattering cross section we have identified π* type resonance in both the isomers. Ionization cross-sections for both the molecules from ionization threshold to 500 eV using BEB method are also presented here. We endeavoured to explore the isomeric effect on various cross sections among these two isomers and included the third isomer, namely glycolaldehyde, as reported in our previous publication.
Improvement of the magnetization and heating ability of CoFe2O4/NiFe2O4 core/shell nanostructures
Authors: Zonkol Maram G , Faramawy A M , Allam Nageh K , El-Sayed H M 
Published: November 2024

Abstract
In this study, the effect of the shell thickness on the structural and magnetic properties of the CoFe2O4/NiFe2O4 core/shell is studied. A single-phase core/shell nanocomposite was prepared by the hydrothermal method. The shell thickness was found to control the magnitudes of saturation magnetization and coercive field of the prepared samples. The thickness of the NiFe2O4, which covered cubic CoFe2O4 particles of 15 nm, was 1.8 nm, leading to an increase in the saturation magnetization by 26% and a decrease in the coercive field by 50% compared to bare CoFe2O4. However, a further increase in shell thickness caused interfacial dislocations due to the lattice mismatch between the core and the shell. Finally, specific absorption rate (SAR) at high frequency was measured for all samples. Comparing the temperature rise under the influence of AC magnetic field, which indicates power loss, relative to bare CoFe2O4, it was enhanced by 100% for a shell thickness of 26 nm. The results of this study point to potential applications for these samples in the field of magnetic hyperthermia for cancer therapy and drug delivery.
Indium oxide thick-films decorated with PdO and PtO2 particles for oxygen detection in humid environments
Authors: Sari Wangi P , Rifai Achmad P , Smith Peter , Agbroko Samuel O , Covington James 
Published: November 2024

Abstract
Thick film indium oxide chemiresistive sensors decorated with PdO and PtO2 particles were investigated for oxygen detection under humid conditions (tested ranging from 20%–80% RH) across a temperature range of 50 °C to 400 °C. The PtO2-decorated In2O3 sensors demonstrated a significantly higher response to oxygen, showing a 500% increase at 200 °C compared to the PdO-decorated sensors (response values of 41 and 8, respectively). Tests in dry air were conducted to assess the effect of humidity on sensor performance, revealing a maximum response of 74 for PtO2-In2O3 at 400 °C, more than three times higher than the response of 22 for PdO-In2O3. Selectivity tests confirmed that the sensors responded more strongly to oxygen than to interfering gases. The integration of an active carbon cloth (ACC) filter effectively reduced interferences from isobutylene and ethylene, enhancing sensor’s selectivity. A comparison of both sensors demonstrated that PtO2-decorated In2O3 has greater potential as an alternative to existing Pb-based electrochemical oxygen sensors, particularly in humid environments.
An indirect geometry crystal time-of-flight spectrometer for FRM II
Authors: Tang Ran , Herb Christoph , Voigt Jörg , Georgii Robert 
Published: November 2024

Abstract
We present a concept for an indirect geometry crystal
time-of-flight spectrometer, which we propose for a source similar
to the FRM-II reactor in Garching. Recently, crystal analyzer
spectrometers at modern spallation sources have been proposed and
are under construction. The secondary spectrometers of these
instruments are evolutions of the flat cone multi-analyzer for
three-axis spectrometers (TAS). The instruments will provide
exceptional reciprocal space coverage and intensity to map out the
excitation landscape in novel materials. We will discuss the
benefits of combining a time-of-flight primary spectrometer with a
large crystal analyzer spectrometer at a continuous neutron source.
The dynamical range can be very flexibly matched to the requirements
of the experiment without sacrificing the neutron intensity. At the
same time, the chopper system allows a quasi-continuous variation of
the initial energy resolution. The neutron delivery system of the
proposed instrument is based on the novel nested mirror optics,
which images neutrons from the position of the pulse cutting chopper
representing a bright virtual source onto the sample. The spot size
of less than 1 cm × 1 cm at the virtual source
allows the realization of very short neutron pulses by the choppers,
while the small and well-defined spot size at the sample position
provides an excellent energy resolution of the secondary
spectrometer.
First results on new helium based eco-gas mixtures for the Extreme Energy Events Project
Authors: Abbrescia M. , Avanzini C. , Baldini L. , Baldini Ferroli R. , Batignani G. , Battaglieri M. , Boi S. , Bossini E. , Carnesecchi F. , Cavazza F. , Cicalò C. , Cifarelli L. , Coccetti F. , Coccia E. , Corvaglia A. , De Gruttola D. , De Pasquale S. , Galante L. , Garbini M. , Gnesi I. , Gramegna F. , Grazzi S. , Hatzifotiadou D. , La Rocca P. , Liu Z. , Mandaglio G. , Margotti A. , Maron G. , Mazziotta M.N. , Mulliri A. , Nania R. , Noferini F. , Nozzoli F. , Palmonari F. , Panareo M. , Panetta M.P. , Paoletti R. , Pellegrino C. , Perasso L. , Pinazza O. , Pinto C. , Pisano S. , Riggi F. , Righini G. , Ripoli C. , Rizzi M. , Sartorelli G. , Scapparone E. , Schioppa M. , Scioli G. , Scribano A. , Selvi M. , Taiuti M. , Terreni G. , Trifirò A. , Trimarchi M. , Vistoli C. , Votano L. , Williams M.C.S. , Zichichi A. , Zuyeuski R. ,   The EEE collaboration
Published: November 2024

Abstract
The Extreme Energy Events (EEE) Project, a joint project of the Centro Fermi (Museo Storico della Fisica e Centro Studi e Ricerche “E. Fermi”) and INFN, has a dual purpose: a scientific research program on cosmic rays at ground level and an intense outreach and educational program. The project consists in a network of about 60 tracking detectors, called telescopes, mostly hosted in Italian High Schools. Each telescope is made by three Multigap Resistive Plate Chambers, operated so far with a gas mixture composed by 98% C2H2F4 and 2% SF6. Due to its high Global Warming Potential, a few years ago the EEE collaboration has started an extensive R&D on alternative mixtures environmentally sustainable and compatible with the current experimental setup and operational environment. Among other gas mixtures, the one with helium and hydrofluoroolefin R1234ze gave the best result during the preliminary tests performed with two of the network telescopes. The detector has proved to reach performance levels comparable to those obtained with previous mixtures, without any modification of the hardware. We will discuss the first results obtained with the new mixture, tested with different percentages of the two components.
Reproducing the caress gesture with an anthropomorphic robot: a feasibility study
Authors: Lapresa Martina , Lauretti Clemente , Cordella Francesca , Reggimenti Andrea , Zollo Loredana 
Published: November 2024

Abstract
Social robots have been widely used to deliver emotional, cognitive and social support to humans. The exchange of affective gestures, instead, has been explored to a lesser extent, despite phyisical interaction with social robots could provide the same benefits as human-human interaction. Some studies that explored the touch and hugs gestures were found in literature, but there are no studies that investigate the possibility of delivering realistic caress gestures, which are, in turn, the easiest affective gestures that could be delivered with a robot. The first objective of this work was to study the kinematic and dynamic features of the caress gesture by conducting experimental acquisitions in which ten healthy volunteers were asked to caress the cheek of a mannequin in two conditions, i.e. standing and sitting. Average motion and force features were then analyzed and used to generate a realistic caress gesture with an anthropomorphic robot, with the aim of assessing the feasibility of reproducing the caress gesture with a robotic device. In addition, twenty-six healthy volunteers evaluated the anthropomorphism and perceived safety of the reproduced affective gesture by answering the Godspeed Questionnaire Series and a list of statements on the robot motion. The gesture reproduced by the robot was similar to the caress gesture performed by healthy volunteers both in terms of hand trajectory and orientation, and exchanged forces. Overall, volunteers perceived the robot motion as safe and positive emotions were elicited. The proposed approach could be adapted to humanoid robots to improve the perceived anthropomorphism and safety of the caress gesture.
Indoor and ambient influences on PM2.5 exposure and well-being for a rail impacted community and implications for personal protections
Authors: Torres Ivette , Do Khanh , Delgado Andrea , Mourad Charlotte , Yu Haofei , Ivey Cesunica E 
Published: November 2024

Abstract
Higher air pollution concentrations can be observed near rail networks, local and highway automobile corridors, and shipyards. Communities adjacent to such sources are disproportionately exposed to air pollution from these stationary and mobile sources. One such community is West San Bernardino in California, where households are feet away from the Burlington Northern Santa Fe intermodal facility and are impacted by activities that are estimated to continuously emit air pollutants due to 24/7 operation. This study aimed to (1) quantify the impact of personal mobility and housing characteristics on daily PM2.5 exposures and well-being for West San Bernardino community members, and (2) develop individualized resilience plans for community collaborators to support future PM2.5 exposure reduction. Personal PM2.5 exposures were measured for community collaborators for seven consecutive days during three deployment periods: October 2021, January 2022, and March 2022. Indoor and ambient PM2.5 levels were also continuously measured for five households over six months using PurpleAir Classic monitors. Demographic and well-being data were collected upon recruitment and after each week of engagement, respectively. Personal exposures in home microenvironments were highest near the railyard and lower farthest away from the railyard. Home exposures were 40% higher on average compared to non-home microenvironments. Household PM2.5 had a higher-than-expected average infiltration factor of 0.55, and indoor 98th percentiles across the households far exceeded a healthy level at an average of 165 μg m3. Resilience plans featured summaries of personal data and recommendations for mitigating exposures. Results suggest that surrounding land use and residential building characteristics compound to worsen air pollution exposures beyond what is expected for exposures in non-industrialized areas. Findings prompt a call for stronger regulation, not only for emissions, but also for indoor air quality and zoning standards that specifically protect disproportionately impacted communities.
Quantizations of transposed Poisson algebras by Novikov deformations
Authors: Chen Siyuan , Bai Chengming 
Published: November 2024

Abstract
The notions of the Novikov deformation of a commutative associative algebra and the corresponding classical limit are introduced. We show such a classical limit belongs to a subclass of transposed Poisson algebras, and hence the Novikov deformation is defined to be the quantization of the corresponding transposed Poisson algebra. As a direct consequence, we revisit the relationship between transposed Poisson algebras and Novikov–Poisson algebras due to the fact that there is a natural Novikov deformation of the commutative associative algebra in a Novikov–Poisson algebra. Hence all transposed Poisson algebras of Novikov–Poisson type, including unital transposed Poisson algebras, can be quantized. Finally, we classify the quantizations of 2-dimensional complex transposed Poisson algebras in which the Lie brackets are non-abelian up to equivalence.
Similarity among quantum-mechanical states: analysis and applications for central potentials
Authors: López-García I , Angulo J C , López-Rosa S 
Published: November 2024

Abstract
The similarity of quantum-mechanical solutions for central potentials is analytically determined and numerically explored for arbitrary dimensionalities. The study here provided focuses on hydrogenic systems and the harmonic oscillator, in respective non-relativistic frameworks. A diversity of analytical expressions for the quantum similarity measure (QSM) and index (QSI) are provided. Relevant conclusions are derived from the analyses grounded on state quantum numbers, space dimensionality and on the role played by the main characteristic parameters of these systems, namely the nuclear charge in the hydrogenic case, and the angular frequency for the oscillator. For this purpose, a statistical analysis of the QSI values has been performed for a large number both of states and combinations of them in each system. Considering the factorization of QSI into a radial and an angular part, particular attention is paid to the individual contribution of each part in both systems.
The optimization of water tourism management in Sumber Maron, Malang and Umbul Ponggok, Klaten
Authors: Nuriana Rheznandya Luthfi , Wahyuni Amalia Putri , Pratama Meiji Nanda Harda , Triningsih Luly , Apriadi Deny Wahyu , Waskito  
Published: November 2024

Abstract
Water tourism is an eminent sector potential to build Indonesians’ welfare. Water tourist destination that can attract tourists today is Umbul Ponggok, located in Klaten, Central Java and Sumber Maron in Malang, East Java. Both tourist destinations have water-based tourism concept by utilizing surrounding natural environment and empowering local people in their management. Therefore, this research aims to compare the optimization of water tourism management based on natural environment and the community empowerment. This research used a qualitative research method with phenomenological approach to see holistic information on water tourism management developed in both tourist objects. The result shows that in its management, Umbul Ponggok keeps attempting to maintain natural conservation and pays much attention to natural conservation and surrounding environment. It is similar to that in Sumber Maron prioritizing natural environment aspect and likewise surrounding community empowerment. Sumber Maron always attempts to review all tourism activities. However, the management existing in Sumber Maron is still far below standard existing in Umbul Ponggok. Therefore, the future tourism management should pass through some stages including trial, update, and public and village government participation to support the advancement of water tourism.
Social and Economic Aspects of The Scavengers at The Waste Disposal Site in Sandakan Sabah Malaysia
Authors: Mapa Mohammad Tahir Bin , Sahido Mohammad Haffizi Adam Bin , Jafar Adi , Sakke Nordin 
Published: November 2024

Abstract
Solid waste management is a pressing global issue, particularly in Malaysia, where population growth has led to increased waste generation, especially in urban areas. Landfills, while unavoidable, have inadvertently created job opportunities for individuals struggling to find employment in the formal job market. This study focuses on a group known as “scavengers,” who collect recyclable materials as a means of livelihood. The primary aim is to explore the social and economic conditions of scavengers at the Sandakan District Council garbage disposal site, located adjacent to Kg Melayu. Through in-depth interviews with thirty respondents, the research reveals that many scavengers are illegal undocumented, often working in groups, whether related or not. The findings indicate that their working conditions expose them to harsh weather, impacting their health. Economically, scavengers sell the collected materials daily, which is crucial for their sustenance. The study emphasises the need for local authorities to consider the role of scavengers in waste management planning to enhance recycling efforts in the district.