bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Triazole Functionalized SiO2/TiO2 Nanoparticles in Polyurethane Coating: A Study on Structural, Thermal, Dynamic Mechanical, Morphological and Electrochemical Properties in Marine Environment
Authors: Xavier Joseph Raj 
Published: June 2022

AbstractNewly synthesized functional nanoparticles, 3‐amino‐1, 2, 4‐triazole‐5‐thiol (ATAT)/SiO2−TiO2 nanoparticles, investigated by Transmission electron microscopy (TEM), Scanning electron microscopy with energy dispersive X‐ray spectroscopy (SEM/EDX), Fourier transform infrared spectroscopy (FTIR), and X‐ray diffraction (XRD) analysis, were added to the polyurethane (PU) matrix. The produced PU‐ATAT/SiO2−TiO2 nanocomposite coated steel specimen was studied by Scanning electrochemical microscopy (SECM), potentiodynamic polarization and Electrochemical impedance spectroscopy (EIS) for their barrier properties against corrosion. The coating resistance (Rcoat) of the PU‐ATAT/SiO2−TiO2 nanocomposite was found to be 2956.90 kΩ.cm2. It was found that the coating resistance of PU‐ATAT/SiO2−TiO2 nanocomposite coating was over 50 % higher than that of the PU coating. The current measured along the scratched surface of the PU‐ATAT/SiO2−TiO2 nanocomposite coating was found to be very less (1.65 nA). The degradation products analyzed by SEM/EDX and XRD displayed the enriched ATAT/SiO2−TiO2 nanoparticles which hindered the passage of electrolytes into the interface of coating. The hydrophobic nature of the PU‐ATAT/SiO2−TiO2 nanocomposite coating (θ=115.4°) was confirmed by water contact angle measurement. The least oxygen permeability was observed in the PU‐ATAT/SiO2−TiO2. The improved mechanical properties were found by dynamic mechanical analysis (DMA) for the PU‐ATAT/SiO2−TiO2 nanocomposite coating. Therefore, the newly synthesized PU‐ATAT/SiO2−TiO2 nanocomposite provided an outstanding barrier and mechanical properties due to the addition of ATAT/SiO2−TiO2 nanoparticles to the polyurethane, which obstructed the degradation of materials and assisted in prolonging the life of the coated steel.
Three‐Dimensional Hierarchical Porous Fe, N‐Doped Hollow Carbon Nanospheres as Stable Electrocatalyst for Efficient Oxygen Reduction Reaction in Both Acidic and Alkaline Electrolytes
Authors: Sun Wei‐Li , Xu Chao , Guo Peng‐Peng , Lu Chen , Yang Kun‐Zu , Wei Ping‐Jie , Liu Jin‐Gang 
Published: June 2022

Abstract3D hierarchical porous Fe, N‐doped hollow carbon nano‐spheres (Fe−N−C HPNCs) as efficient ORR electrocatalyst were obtained using melamine‐formaldehyde resin (MF) nanospheres as thermal sacrificial hard template to optimize the pore structure and provide nitrogen source to the catalyst. The optimized Fe−N−C HPNCs catalyst exhibited excellent catalytic activity with onset (Eonset) and half‐wave (E1/2) potential (Eonset=1.07 V; E1/2=0.90 V vs. RHE) superior to commercial Pt/C catalyst in 0.1 M KOH solution, and demonstrated excellent stability. When applied as cathode electro‐catalyst in a Zn‐air battery, it produced maximum power density (Pmax) of 127 mW cm−2, which is higher than that of commercial Pt/C (Pmax=119 mW cm−2). It also showed good activity (Eonset=0.89 V; E1/2=0.78 V) in 0.1 M HClO4 electrolyte with significantly enhanced stability (ΔE1/2=−7 mV) relative to the Pt/C catalyst (ΔE1/2=−27 mV).
Hybrid Triboelectric‐Electromagnetic Magnetic Energy Harvester‐Based Sensing for Wireless Monitoring of Transmission Lines
Authors: Yuan Zhihao , Jin Xu , Li Ruonan , Wang Baocheng , Han Chengcheng , Shi Yapeng , Wu Zhiyi , Wang Zhong Lin 
Published: June 2022

AbstractMagnetic energy is an abundant and persistent form of energy radiating from various sources. Here, a hybrid triboelectric‐electromagnetic magnetic energy harvester (HMEH) system consisting of a modified pendulum unit is proposed, interacting mechanically with two multilayered TENGs and remotely with Cu coils. Systematic studies are conducted on magneto‐mechano‐energy conversion from power transmission lines. The pendulum is made out of a thin PET plate, with two permanent magnets stuck at each side of the free end of the PET plate. Two multilayered TENGs (each of which has one layer fixed at the same angle while other layers are set free) are located at both sides of the pendulum unit. The coils and the magnets make up the electromagnetic generator (EMG). Multilayered TENGs are connected in parallel with the EMG (each unit is connected to an independent rectifying bridge), and it is possible to charge a 100 µF capacitor to 4.78 V within 55 s. The HMEH system is used to power up a thermometer continuously via a 47 µF capacitor. Furthermore, a design for a wireless early warning system for potential fire hazards due to overheating is realized, revealing potential applications for self‐powered wireless monitoring of transmission lines.
Light‐Assisted Li–O2 Batteries with Lowered Bias Voltages by Redox Mediators
Authors: Liu Weiwei , Yang Yuting , Hu Xu , Zhang Qinming , Wang Chengyi , Wei Jinping , Xie Zhaojun , Zhou Zhen 
Published: June 2022

AbstractThe enormous overpotential caused by sluggish kinetics of the oxygen reduction reaction and the oxygen evolution reaction prevents the practical application of Li–O2 batteries. The recently proposed light‐assisted strategy is an effective way to improve round‐trip efficiency; however, the high‐potential photogenerated holes during the charge would degrade the electrolyte with side reactions and poor cycling performance. Herein, a synergistic interaction between a polyterthiophene photocatalyst and a redox mediator is employed in Li–O2 batteries. During the discharge, the voltage can be compensated by the photovoltage generated on the photoelectrode. Upon the charge with illumination, the photogenerated holes can be consumed by the oxidization of iodide ions, and thus the external circuit voltage is compensated by photogenerated electrons. Accordingly, a smaller bias voltage is needed for the semiconductor to decompose Li2O2, and the potential of photogenerated holes decreases. Finally, the round‐trip efficiency of the battery reaches 97% with a discharge voltage of 3.10 V and a charge voltage of 3.19 V. The batteries show stable operation up to 150 cycles without increased polarization. This work provides new routes for light‐assisted Li–O2 batteries with reduced overpotential and boosted efficiency.
Synergetic Dual‐Ion Centers Boosting Metal Organic Framework Alloy Catalysts toward Efficient Two Electron Oxygen Reduction
Authors: Liu Meihuan , Su Hui , Cheng Weiren , Yu Feifan , Li Yuanli , Zhou Wanlin , Zhang Hui , Sun Xuan , Zhang Xiuxiu , Wei Shiqiang , Liu Qinghua 
Published: June 2022

AbstractHerein, a strategy of synergetic dual‐metal‐ion centers to boost transition‐metal‐based metal organic framework (MOF) alloy nanomaterials as active oxygen reduction reaction (ORR) electrocatalysts for efficient hydrogen peroxide (H2O2) generation is proposed. Through a facile one‐pot wet chemical method, a series of MOF alloys with unique Ni–M (M–Co, Cu, Zn) synergetic centers are synthesized, where the strong metallic ions 3d–3d synergy can effectively inhibit O2 cleavage on Ni sites toward a favorable two‐electron ORR pathway. Impressively, the well‐designed NiZn MOF alloy catalysts show an excellent H2O2 selectivity up to 90% during ORR, evidently outperforming that of NiCo MOF (45%), and NiCu MOF (55%). Moreover, it sustains efficient activity and robust stability under a continuous longterm ORR operation. The correlative in situ synchrotron radiation X‐ray adsorption fine structure and Fourier transform infrared spectroscopy analyses reveal at the atomic level that, the higher Ni oxidation states species, regulated via adjacent Zn2+ ions, are favorable for optimizing the adsorption energetics of key *OOH intermediates toward fast two electron ORR kinetics.
Prelithiation Bridges the Gap for Developing Next‐Generation Lithium‐Ion Batteries/Capacitors
Authors: Li Feifei , Cao Yangyang , Wu Wenjing , Wang Gongwei , Qu Deyang 
Published: June 2022

AbstractThe ever‐growing market of portable electronics and electric vehicles has spurred extensive research for advanced lithium‐ion batteries (LIBs) with high energy density. High‐capacity alloy‐ and conversion‐type anodes are explored to replace the conventional graphite anode. However, one common issue plaguing these anodes is the large initial capacity loss caused by the solid electrolyte interface formation and other irreversible parasitic reactions, which decrease the total energy density and prevent further market integration. Prelithiation becomes indispensable to compensate for the initial capacity loss, enhance the full cell cycling performance, and bridge the gap between laboratory studies and the practical requirements of advanced LIBs. This review summarizes the various emerging anode and cathode prelithiation techniques, the key barriers, and the corresponding strategies for manufacturing‐compatible and scalable prelithiation. Furthermore, prelithiation as the primary Li+ donor enables the safe assembly of new‐configured “beyond LIBs” (e.g., Li‐ion/S and Li‐ion/O2 batteries) and high power‐density Li‐ion capacitors (LICs). The related progress is also summarized. Finally, perspectives are suggested on the future trend of prelithiation techniques to propel the commercialization of advanced LIBs/LICs.
Heterogeneous peer effects by gender, task, and monetary incentive: Evidence from speed skating
Authors: Nishihata Masaya 
Published: June 2022

AbstractUsing data from international speed skating events in the 2012–13 through 2018–19 seasons, I investigate heterogeneous peer effects by gender, task, and monetary incentive. While I do not detect peer effects among men, I find evidence for such effects in some race distances among women. In the women's sprint races of 500 and 1000 meters, a 10% improvement in a peer's personal best prior to this event makes one's time faster by 0.30–0.38%, and a 10% improvement in a peer's time makes one's time faster by 0.93–1.02%. However, in 1000‐meter races for women, peer effects decrease sharply in events without monetary prizes. These results imply that monetary incentives are more effective than peer effects to improve one's performance in a middle‐ or long‐term task that requires patience. This article indicates that the effectiveness of peer effects depends on task characteristics and monetary incentives.
Seizing the opportunity window of artificial intelligence in China: Towards an innovation policy mix framework for emerging technologies from an evolution perspective
Authors: Liu Jing , Wang Mengbo , Kang Xiaoling , Zhang Xia , Chen Xing 
Published: June 2022

AbstractChina's innovation policies for artificial intelligence (AI) are widely considered as having made a remarkable achievement, which offers us a pertinent case to explore how to design and implement an effective innovation policy mix for an emerging technology. On the basis of literature on the characteristics of emerging technologies and the typology of innovation policy, this paper proposes a four‐dimensional framework. It then conducts a categorical principal component analysis and a k‐prototype cluster analysis by using data on 116 China's AI policy programmes from 2009 to 2021, which show that the characteristics of the innovation policy mix can be captured by the four dimensions. Furthermore, our analysis indicates that China's AI innovation policy mix evolves following the changing characteristics of AI technology over time. This paper has some implications for designing AI innovation policy mixes in other countries and designing innovation policy mixes for other emerging technologies.
A Review of MnO2 Composites Incorporated with Conductive Materials for Energy Storage
Authors: Song Xin , Wang Haoran , Li Zhaoneng , Du Cheng‐Feng , Guo Ruisheng 
Published: June 2022

AbstractManganese dioxide (MnO2) has been widely used in the field of energy storage due to its high specific capacitance, low cost, natural abundance, and being environmentally friendly. However, suffering from poor electrical conductivity and high dissolvability, the performance of MnO2 can no longer meet the needs of rapidly growing technological development, especially for the application as electrode material in metal‐ion batteries and supercapacitors. In this review, recent studies on the development of binary or multiple MnO2‐based composites with conductive components for energy storage are summarized. Firstly, general preparing methods for MnO2‐based composites are introduced. Subsequently, the binary and multiple MnO2‐based composites with carbon, conducting polymer, and other conductive materials are discussed respectively. The improvement in their performance is summarized as well. Finally, perspectives on the practical applications of MnO2‐based composites are presented.
Recent Progress in the Selective Fluorinations of Some Functionalized Cycloalkenes
Authors: Nonn Melinda , Paizs Csaba , Kiss Loránd 
Published: June 2022

AbstractOrganofluorine compounds have had an increasing impact in synthetic organic chemistry and pharmaceutical research over the past two decades. Their syntheses and the development of novel synthetic approaches towards versatile fluorinated small molecules have received great interest. Our research team has designed various selective and stereocontrolled methods for the construction of fluorine‐containing small molecular entities, involving the transformation of various functionalized cycloalkenes across their ring olefin bond. The synthetic methodologies developed to access various pharmacologically interesting fluorinated derivatives with multiple chiral centers might be valuable protocols for the preparation of other classes of organic compounds as well.
Introduction: Curiosity, Identities, and Knowledge in Travel Writings on Asia
Authors: Mueller Christian , Salonia Matteo 
Published: June 2022

AbstractThe first chapter reflects on the nature of travelling as the paradigmatic form of human experience and its literary reflection in travel writings. In linking travels and experiences of human encounters, the chapter enquires into the relations between time and space by linking the historiographical traditions of travel writings on Asian spaces as readings of space across time with a critical analysis of the development of conceptualisations and inventions of Asian spaces. In addressing the analytical concepts of curiosity, identities, and knowledge, the chapter questions the dominance of an ideologically biased framework based on the Foucault–Saidian power–knowledge nexus that privileges the ideological assumption that imperialist appropriations of space are the human condition of travel writings. The chapter re-establishes curiosity as a human intellectual capacity at the centre of analysis to capture transnational space of encounters in which mutual curiosities complement the ideological claims for conquest through writing down encounters of difference.
The Challenge of Curiosity During the Cold War: Representations of Asia Between Politics and Consumerism and the Reflections of Goffredo Parise in the 1960s
Authors: Salonia Matteo , Mueller Christian 
Published: June 2022

AbstractThe article investigates multiform perceptions of Asia during the Cold War in the 1960s through the lenses of politics, tourism and curious travellers. The article shows how in a turn towards the criticism of mechanical modernity, the variety of images and perceptions of Asia diversified into extreme positions. Our contribution places travel writer politicians like André Malraux and literary figures like Goffredo Parise alike into a framework in which individualized notions of Asia as a plurality of geopolitical, ideological, regional and local spaces emerged. In combination with the intra-Asian reorientation of tourist images, this chapter argues for a broad spectrum of Asian travel images beyond a clear dichotomy of authentic observations versus colonial gazes under the auspices of Cold War ideology.
Asian Ceremonies and Christian Chivalry in Pigafetta’s ‘The First Voyage Around the World’
Authors: Salonia Matteo 
Published: June 2022

AbstractThis essay focuses on early Iberian Asia and explores the theme of curiosity in the Asian sections of Antonio Pigafetta’sFirst Voyage Around the World, an account of the Magellan expedition. The contribution discusses Pigafetta’s narrative after the finding of the Strait, fleshing out both the colorful images of Asian rites and the presence of Christian chivalry in the text. Pigafetta portrays the Philippines, the Moluccas, and other islands from the perspective of an intellectual knight, self-consciously shaping his own character not only in the past, but also in the future. On the one hand, his guided curiosity usually avoids judgments about the strange societies that he observes; on the other hand, the importance of chivalric values demonstrates the resilience of cultural backgrounds and locally rooted meanings even at the moment of encounter. There is empathy rather than “othering,” but this is not in contradiction with Pigafetta’s cultural and religious identity.
In Search of Textual Treasures: The Ōtani Expeditions and Tibet
Authors: Kohl Stephen W. , Green Ronald S. 
Published: June 2022

AbstractThis chapter carefully reconstructs some of the Ōtani expeditions that at the beginning of the twentieth century aimed to study the early transmission of Buddhism through Central Asia and to develop relations between Japan and Tibet. By contextualizing these Japanese missions and fleshing out the expectations and reactions of those writing about them, this contribution explores the ways in which Japanese scholars perceived and observed Asian habits and rituals with a focus on religious pilgrimage and sites of worship.Thus, this contribution integrates all the other essays by expanding the volume’s reflections on travel and relationship between past, space, and travelers. It is especially in the spiritual geographies described in Aoki Bunkyō's travel account that we find a spatial ordering of Asia that embodies intra-Asian friendship. This genuine motivation challenges political maps and imperial tensions, adding another dimension to the concept of curiosity, and opening new vistas on the contribution of religious networks and spiritual fellowship to the dissemination of knowledge.
Chiral anomaly in Euler fluid and Beltrami flow
Authors: Wiegmann P. B. , Abanov A. G. 
Published: June 2022

Abstract
We show that barotropic flows of a perfect, charged, classical fluid exhibit an anomaly analogous to the chiral anomaly known in quantum field theories with Dirac fermions. A prominent effect of the chiral anomaly is the transport electric current in the fluid at equilibrium with the chiral reservoir. We find that it is also a property of celebrated Beltrami flows — stationary solutions of the Euler equation with an extensive helicity.
Quantum error correction in SYK and bulk emergence
Authors: Chandrasekaran Venkatesa , Levine Adam 
Published: June 2022

Abstract
We analyze the error correcting properties of the Sachdev-Ye-Kitaev model, with errors that correspond to erasures of subsets of fermions. We study the limit where the number of fermions erased is large but small compared to the total number of fermions. We compute the price of the quantum error correcting code, defined as the number of physical qubits needed to reconstruct whether a given operator has been acted upon the thermal state or not. By thinking about reconstruction via quantum teleportation, we argue for a bound that relates the price to the ordinary operator size in systems that display so-called detailed size winding [1]. We then find that in SYK the price roughly saturates this bound. Computing the price requires computing modular flowed correlators with respect to the density matrix associated to a subset of fermions. We offer an interpretation of these correlators as probing a quantum extremal surface in the AdS dual of SYK. In the large N limit, the operator algebras associated to subsets of fermions in SYK satisfy half-sided modular inclusion, which is indicative of an emergent Type III1 von Neumann algebra. We discuss the relationship between the emergent algebra of half-sided modular inclusions and bulk symmetry generators.
θ dependence of Tc in 4d SU(3) Yang-Mills theory with histogram method and the Lee-Yang zeros in the large N limit
Authors: Otake Noriaki , Yamada Norikazu 
Published: June 2022

Abstract
The phase diagram on the θ-T plane in four dimensional SU(3) Yang-Mills theory is explored. We revisit the θ dependence of the deconfinement transition temperature, Tc(θ), on the lattice through the constraint effective potential for Polyakov loop. The θ term is introduced by the reweighting method, and the critical β is determined to θ ∼ 0.75, where the interpolation in β is carried out by the multipoint reweighting method. The θ dependence of Tc obtained here turns out to be consistent with the previous result by D’Elia and Negro [1, 2]. We also derive Tc(θ) by classifying configurations into the high and low temperature phases and applying the Clausius-Clapeyron equation. It is found that the potential barrier in the double well potential at Tc(θ) becomes higher with θ, which suggests that the first order transition continues robustly above θ ∼ 0.75. Using information obtained here, we try to depict the expected θ dependence of the free energy density at T ≲ Tc(0), which crosses the first order transition line at an intermediate value of θ. Finally, how the Lee-Yang zeros associated with the spontaneous CP violation appear is discussed formally in the large N limit, and the locations of them are found to be $$ \left({\theta}_R,{\theta}_I\right)=\left(\left(2m+1\right)\pi, \frac{2n+1}{2\chi {V}_4}\right) $$

θ
R

θ
I

=

2
m
+
1

π

2
n
+
1

2
χ

V
4

with m and n arbitrary integers.
A lattice study of ππ scattering at large Nc
Authors: Baeza-Ballesteros Jorge , Hernández Pilar , Romero-López Fernando 
Published: June 2022

Abstract
We present the first lattice study of pion-pion scattering with varying number of colors, Nc. We use lattice simulations with four degenerate quark flavors, Nf = 4, and Nc = 3 − 6. We focus on two scattering channels that do not involve vacuum diagrams. These correspond to two irreducible representations of the SU(4) flavor group: the fully symmetric one, SS, and the fully antisymmetric one, AA. The former is a repulsive channel equivalent to the isospin-2 channel of SU(2). By contrast, the latter is attractive and only exists for Nf≥ 4. A representative state is $$ \left(\left.\left|{D}_s^{+}{\pi}^{+}\right.\right\rangle -\left.\left|{D}^{+}{K}^{+}\right.\right\rangle \right)/\sqrt{2} $$

D
s
+

π
+

−

D
+

K
+

/

2

. Using Lüscher’s formalism, we extract the near-threshold scattering amplitude and we match our results to Chiral Perturbation Theory (ChPT) at large Nc. For this, we compute the analytical U(Nf) ChPT prediction for two-pion scattering, and use the lattice results to constrain the Nc scaling of the relevant low-energy couplings.