bluuebunny/crossref_metadata_2025_split huggingface dataset:
Physically consistent multi-frequency magnetic loss testing of silicon steel
Authors: Pfützner H. , Shilyashki G. , Bengtsson C. 
Published: October 2022

For decades, much effort has been made to establish test systems for the determination of magnetic losses of electric steels. However, presently available systems are still associated with considerable deficiencies. Meanwhile, increased awareness of preservation of energy enforces the need to determine losses with absolute accuracy. Furthermore, modern drives yield demand for multi-frequency testing. This paper summarizes a multi-frequency test system that avoids the major physical compromises of conventional methodologies. The paper describes the overall design of “physically consistent magnetic loss testing” (CLT) with preferred sample size of 500 × 170 mm2. Specific emphasis is placed on four crucial features: (i) Practical independency of sample state from an extra-thin yoke. (ii) Effective field detection with consideration of demagnetizing field components. (iii) Effective induction detection with advanced air flux compensation, based on true-field conditions. (iv) Complete suppression of harmonics for unique results. Results for time-averaged losses and for instantaneous power functions of grain-oriented steels are presented for frequencies ranging from 162/3 Hz to 10 kHz. For thermal and practical reasons, loss determination is restricted to a maximum of 100 W/kg. The design of CLT claims to be the first loss test concept with an assessed absolute accuracy of about 2.5%. Considering the benefits of the presented system, the method is proposed as a base for international standardization.
Arabidopsis
ORP2A mediates ER–autophagosomal membrane contact sites and regulates PI3P in plant autophagy
Authors: Ye Hao , Gao Jiayang , Liang Zizhen , Lin Youshun , Yu Qianyi , Huang Shuxian , Jiang Liwen 
Published: October 2022

Autophagy is an intracellular degradation system for cytoplasmic constituents which is mediated by the formation of a double-membrane organelle termed the autophagosome and its subsequent fusion with the lysosome/vacuole. The formation of the autophagosome requires membrane from the endoplasmic reticulum (ER) and is tightly regulated by a series of autophagy-related (ATG) proteins and lipids. However, how the ER contacts autophagosomes and regulates autophagy remain elusive in plants. In this study, we identified and demonstrated the roles of
Arabidopsis
oxysterol-binding protein–related protein 2A (ORP2A) in mediating ER–autophagosomal membrane contacts and autophagosome biogenesis. We showed that ORP2A localizes to both ER–plasma membrane contact sites (EPCSs) and autophagosomes, and that ORP2A interacts with both the ER-localized VAMP-associated protein (VAP) 27-1 and ATG8e on the autophagosomes to mediate the membrane contact sites (MCSs). In ORP2A artificial microRNA knockdown (KD) plants, seedlings display retarded growth and impaired autophagy levels. Both ATG1a and ATG8e accumulated and associated with the ER membrane in ORP2A KD lines. Moreover, ORP2A binds multiple phospholipids and shows colocalization with phosphatidylinositol 3-phosphate (PI3P) in vivo. Taken together, ORP2A mediates ER–autophagosomal MCSs and regulates autophagy through PI3P redistribution.
Regulated Restructuring of Mucins During Secretory Granule Maturation In Vivo
Authors: Syed Zulfeqhar A. , Zhang Liping , Tran Duy T. , Bleck Christopher K. E. , Ten Hagen Kelly G. 
Published: October 2022

Mucins are large, highly glycosylated transmembrane and secreted proteins that line and protect epithelial surfaces. However, the details of mucin biosynthesis and packaging in vivo are largely unknown. Here, we demonstrate that multiple distinct mucins undergo intragranular restructuring during secretory granule maturation in vivo, forming unique structures that are spatially segregated within the same granule. We further identify temporally-regulated genes that influence mucin restructuring, including those controlling pH (Vha16-1), Ca2+ions (fwe) and Cl−ions (ClicandClC-c). Finally, we show that altered mucin glycosylation influences the dimensions of these structures, thereby affecting secretory granule morphology. This study elucidates key steps and factors involved in intragranular, rather than intergranular segregation of mucins through regulated restructuring events during secretory granule maturation. Understanding how multiple distinct mucins are efficiently packaged into and secreted from secretory granules may provide insight into diseases resulting from defects in mucin secretion.
Flashbulb memories
Authors: Erll Astrid , Hirst William 
Published: October 2022

Abstract
The two authors – one from literary and cultural studies, the other a cognitive psychologist – explore how the
interdisciplinary perspective of Memory Studies can broaden and enrich current research efforts on flashbulb memories (FBMs). FBMs
are memories of the circumstances in which one learned of a public emotionally charged event, such as 9/11. Psychological research
on FBMs have focused on their cognitive properties, their putative accuracy and confidence. But we claim that when seen in the
broader interdisciplinary perspective of collective memory research, FBMs emerge as inextricably linked up with social, cultural,
and narrative dynamics. This article therefore locates FBMs at the intersection of individual and collective memory narratives.
Connecting research in cognitive psychology with cultural Memory Studies, we explore how flashbulb narratives bear on social
identity and how they might travel across national boundaries or across generations. We further discuss how FBMs are tied to
culture, aesthetics, and media history.
“Oh yeah, one more thing: It’s gonna be huge.”
Authors: Bourgeois Samuel 
Published: October 2022

Abstract
This paper investigates the use of oh yeah in written prose found in American journalistic articles using corpus data. It demonstrates that such uses are a recent phenomenon that have risen in frequency starting at end of the 20th century. These new written functions are adapted to the written medium, but still resemble how oh yeah is used in speech. These developments contribute further insights to the changes occurring in journalistic writing. Furthermore, this paper concentrates on how oh yeah is adapted into journalistic writing to inject an interpersonal flair into the articles in which it is used. The timing of these developments also indicates a later wave of change to journalism that has been until now under-discussed.
Retrieving Twitter argumentation with corpus queries and discourse analysis
Authors: Dykes Nathan , Heinrich Philipp , Evert Stephanie 
Published: October 2022

Abstract
We propose a corpus linguistic approach for retrieving argumentation from tweets about Brexit. We analyse two corpora, one from before the referendum in 2016 and one from early 2019. Our approach is based on the manual development of morphosyntactic corpus queries (in CQP syntax) that target specific argumentation patterns. For the present corpora we have developed 130 queries targeting 34 logical formulae. The paper showcases the query development and presents quantitative and qualitative results on how Brexit-related arguments have changed on Twitter from 2016 to 2019.
A data-driven approach to finding significant changes in language use through time series analysis
Authors: Kehoe Andrew , Gee Matt , Renouf Antoinette 
Published: October 2022

Abstract
This paper conducts a diachronic study of language change in a corpus covering almost 30 years of mainstream UK news text. In our previous studies, several databases were compiled from the corpus, including diachronic records of word frequency, collocation and morphological analysis. Upon user enquiry, our WebCorp Linguist’s Search Engine produced tailored output from these resources. The system was therefore passive, requiring a word or phrase to be specified before querying the databases. The aim now is to extend the data-driven functionality to track the frequency of words in the corpus across time automatically and alert users to statistically significant change patterns. Three tests are employed to find upward and downward trends, sudden jumps in frequency, and seasonal variation.
Influence of sintering time on diffusion bonding of WC-10Co and AISI4340 by spark plasma sintering
Authors: Hasan Mahadi , Islam Md. Ashraful , Huang Zhenyi , Zhao Jingwei , Jiang Zhengyi 
Published: October 2022

It is challenging to obtain successful bonding between cemented tungsten carbide and steel due to the large differences in their physical and mechanical properties. We used spark plasma sintering (SPS) technique and successfully bonded WC-10Co and AISI4340 high-strength steel at a low temperature. The effects of sintering time (5–20 min with a gap of 5 min) on their diffusion bonding were examined. The microstructure of the bonded composite materials was evaluated, and formed phases were identified. The mechanical properties were investigated, and the importance of processing parameters of SPS was discussed. The results show a crack-free continuous metallurgical bonding achieved at 1000°C, and the bonding strength increased with increasing holding times of 5, 10, 15, and 20 min. The sintered WC-10Co powders obtained nearly full density (99.07%) with an average maximum hardness of 1763 HV5. A special arrangement was used to determine the tensile bonding-strength with maximum average of 152 MPa at 20 min.
Can microplastics mediate soil properties, plant growth and carbon/nitrogen turnover in the terrestrial ecosystem?
Authors: Yao Yao , Lili Wang , Shufen Pan , Gang Li , Hongmei Liu , Weiming Xiu , Lingxuan Gong , Jianning Zhao , Guilong Zhang , Dianlin Yang 
Published: October 2022

ABSTRACT
Microplastic (MP) pollution, a global environmental problem, has been recently studied in marine and freshwater environments. However, our understanding of MP effect on terrestrial ecosystems, especially carbon (C) and nitrogen (N) turnover remains poor. This review summarizes the sources and distribution characteristics of MPs in terrestrial ecosystems and explores their effects on soil properties, plant growth, C and N turnover. Once entering the terrestrial ecosystem, MPs could involve in sequestrating carbon and nitrogen by changing soil properties (e.g., pH, soil aggregate stability, and soil porosity). MPs could exert direct influences on plants or on soil physical environment and microbial metabolic environment to indirectly affect plant growth, thus altering the quantity and quality of soil C and N inputs by shifts in plant litter and roots. The changes of the dominant bacteria phyla, related functional genes, and enzymes caused by MP pollution could affect C and N cycles. Additionally, the MP effect varies with its properties (e.g., types, shapes, elemental composition, functional groups, released additives). Future researches should unify the standard system of MP separation, detection, and reveal the ecological effects of MPs, especially their impacts on terrestrial carbon and nitrogen cycles in the context of climate changes.
Hybridization and localized flat band in the WSe2/MoSe2 heterobilayer
Authors: Khalil Lama , Pierucci Debora , Velez-Fort Emilio , Avila José , Vergnaud Céline , Dudin Pavel , Oehler Fabrice , Chaste Julien , Jamet Matthieu , Lhuillier Emmanuel , Pala Marco , Ouerghi Abdelkarim 
Published: October 2022

Abstract
Nearly localized moiré flat bands in momentum space, arising at particular twist angles, are the key to achieve correlated effects in transition-metal dichalcogenides. Here, we use angle-resolved photoemission spectroscopy (ARPES) to visualize the presence of a flat band near the Fermi level of van der Waals WSe2/MoSe2 heterobilayer grown by molecular beam epitaxy. This flat band is localized near the Fermi level and has a width of several hundred meVs. By combining ARPES measurements with density functional theory calculations, we confirm the coexistence of different domains, namely the reference 2H stacking without layer misorientation and regions with arbitrary twist angles. For the 2H-stacked heterobilayer, our ARPES results show strong interlayer hybridization effects, further confirmed by complementary micro- Raman spectroscopy measurements. The spin-splitting of the valence band at K is determined to be 470 meV. The valence band maximum (VBM) position of the heterobilayer is located at the Γ point. The energy difference between the VBM at Γ and the K point is of −60 meV, which is a stark difference compared to individual single monolayer WSe2 and monolayer WSe2, showing both a VBM at K.
A Variable Parameter Linear Tracking Differentiator and Its Application in Large Ground-based Telescopes
Authors: Yang Xiao-Xia , Deng Yong-Ting , Wang Jian-Li , Zhang Bin 
Published: October 2022

Abstract
This paper is concerned with the characteristics of a tracking differentiator (TD) in arranging transition process for the physical system. In order to overcome disadvantages of linear TD (LTD) in practice, a novel variable parameter linear tracking differentiator (VLTD) is proposed. By designing the speediness factor as a function of the tracking error, the VLTD can track a large range of set values with reasonable speed and acceleration. Analysis shows that VLTD can converge to its set value under certain conditions. Meanwhile, the speed and acceleration bounds are added to the VLTD, which guarantees that the proposed transition signal really plays a transitional role. The numerical simulation results emphasize necessity for adding speed and acceleration bounds to the VLTD. By comparing VLTD with the nonlinear TD (NLTD) in the simulations and experiments, VLTD can achieve almost the same performance as the NLTD while it is easier to be implemented.
Impact of the topology of urban streets on mobility optimization
Authors: Tokuda Eric K , Comin Cesar H , Costa Luciano da F 
Published: October 2022

Abstract
Several natural and artificial structures and systems are somehow optimized for performing specific functionalities. The structure and topology of cities are no exception, as it is critically important to ensure effective access to the several resources as well as overall mobility. The present work addresses the important subject of improving the plan of a given city through the incorporation of avenues and other expressways such as bridges and tunnels. More specifically, we start with the topology of a real city and consider the incorporation of an expressway between any two locations in the city, keeping one location fixed and varying the angle of the other. The whole city area is covered in this manner, which allows us to derive a respective energy surface indicating the gain obtained regarding the average shortest path length for each of the possible situations. These surfaces therefore provide a complete picture of how much each city can be improved regarding minimal distances. Quite distinct surfaces have been obtained for 18 considered European cities. These surfaces are then characterized in terms of the number of local extrema and respective spatial complexity, expressed in terms of a raggedness measurement. Measurements are also obtained respectively to the geometry and topology of the considered cities. It is shown that the shortest path gain depends strongly on some of the considered measurements, especially lacunarity and transitivity. Interestingly, the intricacy of the energy surfaces resulted in relatively little correlation with the topological and geometrical measurements.
A geometric approach to contact Hamiltonians and contact Hamilton–Jacobi theory
Authors: Grabowska Katarzyna , Grabowski Janusz 
Published: October 2022

Abstract
We propose a novel approach to contact Hamiltonian mechanics which, in contrast to the one dominating in the literature, serves also for non-trivial contact structures. In this approach Hamiltonians are no longer functions on the contact manifold M itself but sections of a line bundle over M or, equivalently, 1-homogeneous functions on a certain

G
L

(
1
,

R

)

-principal bundle

τ
:
P
→
M

, which is equipped with a homogeneous symplectic form ω. In other words, our understanding of contact geometry is that it is not an ‘odd-dimensional cousin’ of symplectic geometry but rather a part of the latter, namely ‘homogeneous symplectic geometry’. This understanding of contact structures is much simpler than the traditional one and very effective in applications, reducing the contact Hamiltonian formalism to the standard symplectic picture. We develop in this language contact Hamiltonian mechanics in the autonomous, as well as the time-dependent case, and the corresponding Hamilton–Jacobi theory. Fundamental examples are based on canonical contact structures on the first jet bundles

J

1

L

of sections of line bundles L, which play in contact geometry a fundamental rôle, similar to that played by cotangent bundles in symplectic geometry.
Phasor-based multi-harmonic unmixing for in-vivo hyperspectral imaging
Authors: Vallmitjana Alexander , Lepanto Paola , Irigoin Florencia , Malacrida Leonel 
Published: October 2022

Abstract
Hyperspectral imaging (HSI) is a paramount technique in biomedical science, however, unmixing and quantification of each spectral component is a challenging task. Traditional unmixing relies on algorithms that need spectroscopic parameters from the fluorescent species in the sample. The phasor-based multi-harmonic unmixing method requires only the empirical measurement of the pure species to compute the pixel-wise photon fraction of every spectral component. Using simulations, we demonstrate the feasibility of the approach for up to 5 components and explore the use of adding a 6th unknown component representing autofluorescence. The simulations show that the method can be successfully used in typical confocal imaging experiments (with pixel photon counts between 101 and 103). As a proof of concept, we tested the method in living cells, using 5 common commercial dyes for organelle labeling and we easily and accurately separate them. Finally, we challenged the method by introducing a solvatochromic probe, 6-Dodecanoyl-N,N-dimethyl-2-naphthylamine (LAURDAN), intended to measure membrane dynamics on specific subcellular membrane-bound organelles by taking advantage of the linear combination between the organelle probes and LAURDAN. We succeeded in monitoring the membrane order in the Golgi apparatus, Mitochondria, and plasma membrane in the same in-vivo cell and quantitatively comparing them. The phasor-based multi-harmonic unmixing method can help expand the outreach of HSI and democratize its use by the community for it does not require specialized knowledge.
Influence of the mass conservation cavitation boundary on the tribo-dynamic responses of the micro-groove water-lubricated bearing
Authors: Cai Jianlin , Han Yanfeng , Xiang Guo , Wang Cheng , Wang Liwu , Chen Shouan 
Published: October 2022

Abstract
This study aims to reveal the role of the mass conversation cavitation boundary on the tribo-dynamic responses of five kinds of micro-groove water-lubricated bearing under mixed lubrication. By introducing the mass conservation boundary, the tribo-dynamic model of the water-lubricated micro-groove bearing is established and numerically solved by the control volume method. The accuracy of the developed model is verified by comparing the calculated results with the existing experimental and simulation results. The effects of cavitation under Reynolds and mass conservation boundary conditions on different micro-groove bearings were analyzed using the model, and the rotational speed and microgroove depth parameters were analyzed. The simulation results show that , regardless of the shape of the bottom of the microgroove, cavitation can stabilize the journal movement and enhance the dynamic pressure effect of the micro-grooves. The parameter analysis of rotational speed and micro-groove depth proves that rotational speed significantly influences the micro-groove cavitation zone and the dynamic pressure effect. Moreover, the greater the micro-groove depth, the smaller the enhancement effect of cavitation to dynamic pressure. The water-lubricated micro-groove bearing with the bottom shape of the left-triangle has the best lubricating performance during the whole analysis process.
Online acoustic emission measurement of tensile strength and wear rate for AA8011-TiC- ZrB2 hybrid composite
Authors: Brucely Y , Shaji Y Christabel , Bejaxhin A Bovas Herbert , M Abeens 
Published: October 2022

Abstract
In current scenario the aircraft industry in need of a lightweight connecting material that persuade the technical and technological standards, but also need superior mechanical qualities. In this work the major objective is to enhance the strength behaviour of stir cast composites. Aluminum 8011 (Al 8011) titanium carbide (TiC) and zirconium boron (ZrB2) hybrid composites are stir cast in this work, and their microstructure, mechanical, and tribological properties are investigated. The matrix material was Al 8011, which was supplemented with stronger TiC to boost mechanical strength and softer ZrB2 to improve thermal and corrosion resistance without significantly changing electrical properties. According to the findings, the reinforced alloy’s mechanical qualities outperform those of the unreinforced alloy. Acoustic energy generated during deformation of composite materials has been monitored and early fracture measurements has been achieved using the Acoustic emission (AE) approach in tensile test specimens. As a result of the experiment, Al8011 + 10% TiC + 2% ZrB2 composites outperform the Al8011 matrix alloy in terms of wear resistance, coefficient of friction, and surface smoothness, as well as other characteristics. The AFM representation of Al8011 + 10% TiC + 2% ZrB2 matrix reveals that the wear surface smoothness of the AMMC is significantly improved as compared to the Al8011 matrix alloys.
Operationally meaningful representations of physical systems in neural networks
Authors: Poulsen Nautrup Hendrik , Metger Tony , Iten Raban , Jerbi Sofiene , Trenkwalder Lea M , Wilming Henrik , Briegel Hans J , Renner Renato 
Published: October 2022

Abstract
To make progress in science, we often build abstract representations of physical systems that meaningfully encode information about the systems. Such representations ignore redundant features and treat parameters such as velocity and position separately because they can be useful for making statements about different experimental settings. Here, we capture this notion by formally defining the concept of operationally meaningful representations. We present an autoencoder architecture with attention mechanism that can generate such representations and demonstrate it on examples involving both classical and quantum physics. For instance, our architecture finds a compact representation of an arbitrary two-qubit system that separates local parameters from parameters describing quantum correlations.