bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hierarchical and Porous Structures of Carbon Nanotubes‐Anchored MOF Derivatives Bridged by Carbon Nanocoils as Lightweight and Broadband Microwave Absorbers
Authors: Zuo Xueqing , Zhang Hao , Zhou Cao , Zhao Yongpeng , Huang Hui , Wen Ningxuan , Sun Chen , Fan Zeng , Pan Lujun 
Published: May 2023

AbstractHigh‐performance microwave absorption (MA) materials have attracted more and more attention because they can effectively prevent microwave radiation and interference from electronic devices. Herein, a new type of MA composite is constructed by introducing carbon nanotubes (CNTs)‐anchored metal–organic framework derivatives (MOFDs) into a conductive carbon nanocoil (CNC) network, denoted as CNC/CNT‐MOFD. The CNC/MOFD shows a wide effective absorption band of 6.7 GHz under a filling ratio of only 9% in wax‐matrix. This is attributed to the hierarchical and porous structures of MOFD bridged by the uniformly dispersed conductive CNC network and the cross‐polarization induced by the 3D spiral CNCs. Besides, the as‐grown 1D CNTs improve space utilization, porosity, and polarization loss of the composites, resulting in the increase of imaginary permittivity, which further realizes impedance matching and energy attenuation. The Ni nanoparticles in layers of MOFD and at the tips of CNTs generate magnetic loss, promoting the low‐frequency absorption ability. Resultantly, RCS values of the optimized composite in all tested theta (θ) ranges are less than −25 dB m2 at 9.5 GHz, effectively reducing the probability of the target detected by the radar.
Synergistic Modulation of Electronic Interaction to Enhance Intrinsic Activity and Conductivity of Fe–Co–Ni Hydroxide Nanotube for Highly Efficient Oxygen Evolution Electrocatalyst
Authors: Huang Huanfeng , Ning Shunlian , Xie Yanyu , He Zhujie , Teng Jun , Chen Zhuodi , Fan Yanan , Shi Jian‐Ying , Barboiu Mihail , Wang Dawei , Su Cheng‐Yong 
Published: May 2023

AbstractThe large‐scale hydrogen production and application through electrocatalytic water splitting depends crucially on the development of highly efficient, cost‐effective electrocatalysts for oxygen evolution reaction (OER), which, however, remains challenging. Here, a new electrocatalyst of trimetallic Fe–Co–Ni hydroxide (denoted as FeCoNiOxHy) with a nanotubular structure is developed through an enhanced Kirkendall process under applied potential. The FeCoNiOxHy features synergistic electronic interaction between Fe, Co, and Ni, which not only notably increases the intrinsic OER activity of FeCoNiOxHy by facilitating the formation of *OOH intermediate, but also substantially improves the intrinsic conductivity of FeCoNiOxHy to facilitate charge transfer and activate catalytic sites through electrocatalyst by promoting the formation of abundant Co3+. Therefore, FeCoNiOxHy delivers remarkably accelerated OER kinetics and superior apparent activity, indicated by an ultra‐low overpotential potential of 257 mV at a high current density of 200 mA cm−2. This work is of fundamental and practical significance for synergistic catalysis related to advanced energy conversion materials and technologies.
Structure‐Controlled Carbon Hosts for Dendrite‐Free Aqueous Zinc Batteries
Authors: Lee Kyungbin , Lee Young Jun , Lee Michael J. , Han Junghun , Ryu Kun , Kwon Jeong An , Kim Eun Ji , Kang Hyewon , Kim Byung‐Hyun , Kim Bumjoon J. , Lee Seung Woo 
Published: May 2023

AbstractThe surging demand for environmental‐friendly and safe electrochemical energy storage systems has driven the development of aqueous zinc (Zn)‐ion batteries (ZIBs). However, metallic Zn anodes suffer from severe dendrite growth and large volume change, resulting in a limited lifetime for aqueous ZIB applications. Here, it is shown that 3D mesoporous carbon (MC) with controlled carbon and defect configurations can function as a highly reversible and dendrite‐free Zn host, enabling the stable operation of aqueous ZIBs. The MC host has a structure‐controlled architecture that contains optimal sp2‐carbon and defect sites, which results in an improved initial nucleation energy barrier and promotes uniform Zn deposition. As a consequence, the MC host shows outstanding Zn plating/stripping performance over 1000 cycles at 2 mA cm−2 and over 250 cycles at 6 mA cm−2 in asymmetric cells. Density functional theory calculations further reveal the role of the defective sp2‐carbon surface in Zn adsorption energy. Moreover, a full cell based on Zn@MC900 anode and V2O5 cathode exhibits remarkable rate performance and cycling stability over 3500 cycles. These results establish a structure‐mechanism‐performance relationship of the carbon host as a highly reversible Zn anode for the reliable operation of ZIBs.
Modeling concrete properties: New approaches in MC2020
Authors: Müller Harald S. , Boumaaza Mouna 
Published: May 2023

AbstractThe fib Model Code 2020 (MC2020) is developed to serve as the basis for future international codes and standards for the design of concrete structures by summarizing international research and experience and converting this knowledge into a practical document. The chapter “Concretes” contained therein provides a clear set of application rules in combination with sufficient background information and related references. This paper gives a concise overview of the contents of the Chapter 14 “Concretes” in the 2nd draft of MC2020. Instead of presenting numerous details on changes in the text and equations compared with the previous MC2010, major fundamentals on modeling concrete behavior are indicated. New sections in MC2020 on non‐conventional concretes, durability specifications and environmental performance are covered. Extended state‐of‐the‐art chapters on concrete transport properties and durability design conclude this contribution.
Afferent venous perfusion of fetal liver: umbilical and portal blood‐flow volumes in fetuses born small‐for‐gestational age
Authors: Kivilevitch Z. , Gilboa Y. , Gilad N. , Kassif E. , Achiron R. 
Published: May 2023

ABSTRACTObjectiveTo quantify the dynamic changes in the afferent venous flow volume of the liver in low‐risk pregnancies with fetuses born small‐for‐gestational age.MethodsThis was a prospective study of low‐risk singleton pregnancies with estimated fetal weight (EFW) and birth weight ≤ 10th centile attending for a routine second‐ or third‐trimester ultrasound examination. Their umbilical and portal blood‐flow volumes were compared with those of a control group of fetuses born appropriate‐for‐gestational age from which normal reference ranges were constructed. Absolute and Z‐score differences between the groups were assessed.ResultsIn total, 133 fetuses were included in the study group and 362 in the control group. The mean umbilical blood‐flow volume in the study group, both absolute and normalized per kg of EFW, was below that of the appropriate‐for‐gestational‐age fetuses for most of the period of pregnancy studied (overall mean Z‐score, –0.82 and –0.84, respectively). In contrast, the mean portal blood‐flow volume, per kg of EFW, showed the opposite trend (overall mean Z‐score, +0.86), reaching its maximum level (+1.43) in the late third trimester. This resulted in a steep decrease in the mean placental‐to‐portal‐blood‐flow volume ratio, from 14.4 at 24 weeks of gestation (above the 60th centile) to 4.7 at 38 weeks of gestation (15th centile), corresponding to Z‐scores of +0.4 and –1.02, respectively.ConclusionIn fetuses born small‐for‐gestational age, the ratio of blood‐flow volume in the umbilical vein to that in the portal vein decreases consistently during pregnancy, and to a greater extent compared with those born appropriate‐for‐gestational age, reaching a lower nadir in the third trimester. This additional redistribution of liver perfusion affects negatively fetal growth even in low‐risk pregnancy, and should be taken into account when planning delivery. We suggest considering liver venous perfusion as an ancillary tool for monitoring small‐for‐gestational‐age pregnancies. © 2023 International Society of Ultrasound in Obstetrics and Gynecology.
Assessment of low‐frequency aeroacoustic emissions of a wind turbine under rapidly changing wind conditions based on an aero‐servo‐elastic CFD simulation
Authors: Wenz Florian , Maas Oliver , Arnold Matthias , Lutz Thorsten , Krämer Ewald 
Published: May 2023

AbstractA meteorologically challenging situation that represents a demanding control task (rotational speed, pitch and yaw) for a wind turbine is presented and its implementation in a simulation is described. A high‐fidelity numerical process chain, consisting of the computational fluid dynamics (CFD) solver FLOWer, the multi‐body system (MBS) software SIMPACK and the Ffowcs Williams‐Hawkings code ACCO, is used. With it, the aerodynamic, servoelastic and aeroacoustic (<20 Hz) behaviour of a generic wind turbine during a meteorological event with strong and rapid changes in wind speed and direction is investigated. A precursor simulation with the meteorological model system PALM is deployed to generate realistic inflow data. The simulated strong controller response of the wind turbine and the resulting aeroelastic behaviour are analysed. Finally, the low‐frequency sound emissions are evaluated and the influence of the different operating and flow parameters during the variable inflow is assessed. It is observed that the wind speed and, linked to it, the rotational speed as well as the turbulence intensity are the main influencing factors for the emitted low‐frequency sound power of the wind turbine. Yawed inflow, on the other hand, has little effect unless it changes the operational mode to load reduction, resulting in a swap of the main emitter from the blades to the tower.
Desperately Funny: Comedy, Performance and the Musical Moment in Toni Erdmann (2016)
Authors: Harries Rhiannon 
Published: May 2023

AbstractIn a standout scene in Toni Erdmann (Maren Ade, 2016), straight-laced management consultant Ines (Sandra Hüller) is quietly coerced by her father Winfried (Peter Simonischek)—here in character as his eccentric alter ego Toni—into singing to a room full of strangers at a party. Hüller’s rendition of ‘Greatest Love of All’, made famous by Whitney Houston’s 1986 cover, drew spontaneous applause at the film’s Cannes première, and many critics identify it as a ‘feel-good’ moment in the film’s otherwise awkward comedy. This chapter considers the more ambivalent affects of Toni Erdmann’s musical moment as it participates in the complex personal and political dynamics of a film that is less a comedy than a drama about the possibilities and failures of the comic and of performance as responses to fraying familial and social bonds under late capitalism. Drawing on Henri Bergson’s theory of humour, Sianne Ngai’s account of ‘zany’ comedy and Lauren Berlant’s notion of the ‘impasse’, the chapter argues that the film’s deliberate frustration of some of the musical moment’s more utopic functions is key to its affective indexing of the present and the conditions of post-industrial capitalism.
All Singing! All Talking! All British! Musical Moments in Early British Talkies 1929 to 1932
Authors: Porter Laraine 
Published: May 2023

AbstractBritish silent cinema transformed to sound in June 1929, slightly ahead of Europe and a year or so behind Hollywood whose popular Al Jolson Musicals The Jazz Singer (1927) and The Singing Fool (1928) had taken British cinemas by storm. Alfred Hitchcock’s murder story (Blackmail, Alfred Hitchcock, UK) was Britain’s first official talkie and like the majority of films that followed in its wake, contained a pivotal musical moment. This article analyses the use of song and music in early British talkies as they sought to forge a new ‘talkie film language’ by combining dialogue, music and plot. It argues that these early musical moments deployed the dramatic potential of synchronised music at pivotal moments in the plot as well as using them to delineate gender and sexuality and signalling differences in class and culture through the representation of musical tastes, styles and motifs. In some cases, music freed the performers from the tyranny of early spoken dialogue, stilted scripts and primitive microphone technology. Importantly, musical interludes also created commercial opportunities from sales of the ‘song-from-the-film’, exploiting links between early talkies and the lucrative domestic gramophone and sheet music markets.
Italian Experiences in Coworking Spaces During the Pandemic
Authors: Mariotti Ilaria , Lo Russo Michele 
Published: May 2023

AbstractThe chapter presents and discusses the results of two surveys addressed to coworking spaces managers in Italy, during the COVID-19 pandemic, in 2020 and 2021, respectively. The strategies coworking spaces have adopted to cope with the pandemic are described, and the determinants of the coworking resilience level (e.g., size, ownership, sector specialisation, hybridization) are presented. It is explored how the coworking spaces managers have kept the community alive and the perception of the interviewees about the future in the two years. The results of the survey in 2021 show that the average level of profitability and confidence in coworking performance returned to the pre-pandemic level. The pandemic has underlined a potential key role of CSs in enhancing work-life balance and promoting the socio-economic development of peripheral and rural areas. Besides, during the pandemic, Southern Italy has attracted remote workers (e.g., “southworkers”), and promoted the so-called ‘community garrisons’, willing to host them and ‘retain’ young people.
Dynamics of Change at Work and Reactions of Coworking Spaces in the Aftermath of the Pandemic: Notes on Portugal
Authors: Tomaz Elisabete , Gato Maria , Haubrich Gislene 
Published: May 2023

AbstractNew workspaces, such as coworking spaces (CSs), have had exponential growth in Portugal in recent years, both in number and variety. Lockdowns and other restrictive measures on mobility, employment and business activity during the COVID-19 pandemic have significantly impacted all sectors, albeit differently. This chapter summarises the central events related to the pandemic crisis in Portugal, reflecting on the impacts observed and highlighting the main legislative measures adopted by the government and the subsequent increasing expressiveness of telework. Therefore, in addition to the gradual transformation of work, CSs have gained a growing space in the media and on the political agenda. Based on ongoing research, this article aims to provide a brief overview of the pandemic effects on Portuguese coworking reality and related issues, pointing out insights for the future.
Narratives on COVID-19 Effects on Coworking Spaces in France: A Winning Ticket for the Peripheries?
Authors: Leducq Divya , Demazière Christophe 
Published: May 2023

AbstractFrance, like other European countries, has not been spared the COVID-19 crisis, but this pandemic, unknown in the twenty-first century, has highlighted and served as a sounding board for many other issues, both in society and in the materiality of contemporary cities. A new territorial narrative has emerged around the following question: can coworking spaces, and more generally third workplaces, meet the needs of a French society that is looking for planning solutions in the face of successive emergencies, in favour of better territorial equality and individual well-being? To assess the growth of coworking in France and its territorial impact—real, potential, or symbolic—the authors refer to their own research in the Centre-Loire Valley region and to specialized literature on economics and regional planning.
Impact of the COVID-19 Pandemic on Remote Working and Coworking Spaces in Germany—Narrative Literature Analyses
Authors: Hölzel Marco , Vogl Thomas 
Published: May 2023

AbstractThe COVID-19 pandemic has been hit the whole German society and with that the way of working as well as the trend of coworking, as it happened similarly in other western societies. With information about governmental measurements, the world of work, mobility and transportation, people’s behavior, companies’ strategies, the real estate market, and changes in new working spaces from different sources this article creates a narration of immediate impacts, medium-term and long-run effects. Finally, this article aims to draw potential coming changes and further trends for coworking spaces.
Linguistik der Erinnerung – transnational. Das Beispiel lexikalischer Erinnerungsorte
Authors: Leuschner Torsten 
Published: May 2023

ZusammenfassungAnhand historischer Germanismen v. a. im Englischen, aber auch im Polnischen versucht der Aufsatz, einen Beitrag zu einer interdisziplinären Linguistik der Erinnerung zu leisten. Nach einer Literaturübersicht wird zunächst vorgeschlagen, das Denotat lexikalischer Erinnerungsorte als narrative Abbreviatur (J. Rüsen), das Konnotat als historisches Stereotyp (H.H. Hahn, H. Orłowski) zu beschreiben. In einem zweiten Schritt wird diese strenge Dichotomie von Denotat und Konnotat durch eine flexiblere framesemantische Konzeption ersetzt, um somit linguistisch zu modellieren, wie Sprache als Erinnerungsstabilisator (J. Fried) die Ordnungen des sozialen Gedächtnisses (H. Feilke) auch übereinzelsprachlich stabilisieren hilft.
Klinische Entscheidungsfindung mit Künstlicher Intelligenz
Authors: Samhammer David , Beck Susanne , Budde Klemens , Burchardt Aljoscha , Faber Michelle , Gerndt Simon , Möller Sebastian , Osmanodja Bilgin , Roller Roland , Dabrock Peter 
Published: May 2023

ZusammenfassungIn diesem Einleitungskapitel wird der Bedeutung nachgegangen, die dem Einsatz von Künstlicher Intelligenz (KI) in der Klinik zukommt. Der Einsatz von KI ist dort mit der Hoffnung verbunden, das Gesundheitssystem zu verbessern, bringt jedoch auch Herausforderungen mit sich. Sowohl die Leistungsfähigkeit als auch die Undurchsichtigkeit von KI-Systemen kann zu Veränderungen im klinischen Entscheidungsprozess führen und verkompliziert damit geltende ethische Prinzipien, rechtliche Konzepte, gängige Routinen, Verfahren sowie die Beziehung zwischen den Akteur:innen, allen voran Ärzt:innen und Patient:innen. Deshalb gilt es herauszufinden, wie die zur Verfügung stehenden Systeme gewinnbringend in der Praxis Anwendung finden können.
Perspektiven von Patient:innen und des medizinischen Personals – Anwendungsfälle von KI in der Nephrologie
Authors: Samhammer David , Beck Susanne , Budde Klemens , Burchardt Aljoscha , Faber Michelle , Gerndt Simon , Möller Sebastian , Osmanodja Bilgin , Roller Roland , Dabrock Peter 
Published: May 2023

ZusammenfassungIn diesem Kapitel werden zwei Anwendungsfälle aus dem Bereich der Nephrologie vorgestellt. Die Anwendungsfälle bestehen aus zwei Experimenten, die unter der Begleitung qualitativer Erhebungen durchgeführt wurden. Aus der Interpretation der gewonnenen Daten ergeben sich Rückschlüsse darüber, welche Bedürfnisse Ärzt:innen und Patient:innen für den Einsatz von KI-Systemen im klinischen Alltag äußern. Auch Einblicke in die Rolle des Pflegepersonals sind in vorliegendem Material zu finden.
Negative scalar potentials and the swampland: an Anti-Trans-Planckian Censorship Conjecture
Authors: Andriot David , Horer Ludwig , Tringas George 
Published: May 2023

Abstract
In this paper, we derive a characterisation of negative scalar potentials, V < 0, in d-dimensional effective theories of quantum gravity. This is achieved thanks to an Anti-Trans-Planckian Censorship Conjecture (ATCC), inspired by a refined version of the TCC. The ATCC relies on the fact that in a contracting universe, modes that become sub-Planckian in length violate the validity of the effective theory. In the asymptotics of field space, we deduce that −V′/V ≥ c0 when V′ ≥ 0. The rate $$ {c}_0=2/\sqrt{\left(d-1\right)\left(d-2\right)} $$

c
0

=
2
/

d
−
1

d
−
2

is successfully tested in several string compactifications for d ≥ 4. In addition, a new asymptotic condition, V′′/V ≥ $$ {c}_0^2 $$

c
0
2

, is derived. By extrapolation to anti-de Sitter solutions of radius l, we infer the existence of a scalar whose mass should obey m2l2 ≲ −2. This property is verified in many supersymmetric examples.
Combining effects ensuring boundedness in an attraction–repulsion chemotaxis model with production and consumption
Authors: Li Tongxing , Frassu Silvia , Viglialoro Giuseppe 
Published: May 2023

AbstractThis paper is framed in a series of studies on attraction–repulsion chemotaxis models combining different effects: nonlinear diffusion and sensitivities and logistic sources, for the dynamics of the cell density, and consumption and/or production impacts, for those of the chemicals. In particular, herein we focus on the situation where the signal responsible of gathering tendencies for the particles’ distribution is produced, while the opposite counterpart is consumed. In such a sense, this research complements the results in Frassu et al. (Math Methods Appl Sci 45:11067–11078, 2022) and Chiyo et al. (Commun Pure Appl Anal, 2023, doi: 10.3934/cpaa.2023047), where the chemicals evolve according to different laws.
Isomorphic Copies of $$\ell ^\infty $$ in the Weighted Hardy Spaces on the Unit Disc
Authors: Sánchez-Pérez Enrique Alfonso , Szwedek Radosław 
Published: May 2023

AbstractIt is still unclear whether the density of analytic polynomials in an H-admissible space is sufficient to the minimality of the space? This question has a purely foundational background, relating fundamental concepts from the theory of $$H^p$$

H
p

spaces. We hypothesize that there is no general relationship between the density of analytic polynomials and the R-admissibility of an H-admissible space. We solve this problem by finding suitable counterexamples of Hardy spaces built upon some weighted Lebesgue spaces. In particular, we provide a direct construction of weights from Szegő class, which guarantees the existence of isomorphic copies of the space of bounded sequences in weighted Hardy spaces on the unit disc.
Evaluating the microcystin-LR-degrading potential of bacteria growing in extreme and polluted environments
Authors: Lukhele Thabile , Msagati Titus Alfred Makudali 
Published: May 2023

AbstractInhabitants of extreme and polluted environments are attractive as candidates for environmental bioremediation. Bacteria growing in oil refinery effluents, tannery dumpsite soils, car wash effluents, salt pans and hot springs were screened for microcystin-LR biodegradation potentials. Using a colorimetric BIOLOG MT2 assay; Arthrobacter sp. B105, Arthrobacter junii, Plantibacter sp. PDD-56b-14, Acinetobacter sp. DUT-2, Salinivibrio sp. YH4, Bacillus sp., Bacillus thuringiensis and Lysinibacillus boronitolerans could grow in the presence of microcystin-LR at 1, 10 and 100 µg L−1. Most bacteria grew optimally at 10 µg L−1 microcystin-LR under alkaline pH (8 and 9). The ability of these bacteria to use MC-LR as a growth substrate depicts their ability to metabolize the toxin, which is equivalent to its degradation. Through PCR screening, these bacteria were shown to lack the mlr genes implying possible use of a unique microcystin-LR degradation pathway. The study highlights the wide environmental and taxonomic distribution of microcystin-LR degraders.