bluuebunny/crossref_metadata_2025_split huggingface dataset:
Immobilization of Polyoxometalate onto Modified Magnetic Nanoparticles: A New Catalyst for the Synthesis of Dihydropyranopyrazole Derivatives
Authors: Abaeezadeh Somayeh , Beni Alireza Salimi , Zarnegaryan Ali , Nabavizadeh Mohammadreza 
Published: October 2021

AbstractA new nanocatalyst Fe3O4@carbon@polyoxometalate (Fe@C@Mo6O18) consisting of a cluster of Fe3O4nanoparticles as core, a carbon layer as inner shell, and a Lindqvist type polyoxometalate as the outer shell was prepared. The prepared nanocatalyst structure was characterized by energy dispersive X‐ray (EDX), scanning electron microscopy (SEM), vibration sample magnetometer (VSM), thermogravimetric analysis (TGA), and Fourier transform infrared (FT‐IR) spectroscopy techniques and their catalytic activity was evaluated for the synthesis of dihydropyranopyrazole derivatives. The results were excellent regarding the high yield of the products and short reaction time. The new nanocatalyst showed good recoverability with a significant loss of activity and selectivity within successive runs. Most importantly, these materials can be easily recovered by simple magnetic separation.
Binding of Water‐Soluble CdSe Quantum Dots with Human Serum Albumin: Further Studies into their Effects on Dietary Polyphenol Binding and Sensing of Antibiotic Lomefloxacin
Authors: Haque Mahabul , Santra Sujan , Paul Debojit , Roy Atanu Singha 
Published: October 2021

AbstractSynthesis of surface modified quantum dots (QDs) having potential biological activities are great important in biomedicinal chemistry. Here, we have synthesized mercapto propanoic acid (MPA) and thiolactic acid (TLA) coated water soluble cadmium selenide (CdSe) QDs having biological activity. Dispersion of QDs into a biological fluid can form protein corona. Hence, the binding of CdSe QDs with the carrier protein, human serum albumin (HSA) have been executed using spectroscopic methods. The binding affinity order of CdSe QDs‐HSA complexes were found in the order of 105 M−1 at 298 K. CdSe QDs are also affects the binding affinities of dietary polyphenols (naringin: NG and naringenin: NRG) towards HSA. The synthesized CdSe QDs was employed to sensing of antibiotic lomefloxacin by fluorescence quenching mechanism. The detection limit was found 0.70‐1.83 μg mL−1. The CdSe QDs also demonstrate the detection of lomefloxacin under uv light based on color change of the solutions.
LaTi21O38/CuLaO2/CoO Nanorods as High‐Performance Anode Materials for Lithium‐Ion Batteries
Authors: Gao Nan , Liu Yuzhou , Xia Yu , Li Xing 
Published: October 2021

AbstractTi−Co−Cu composites as anode for lithium‐ion batteries are outstanding materials to obtain high specific capacity and cycle stability. In this work, LaTi21O38/CuLaO2/CoO composite materials (LTCLC) were designed by a simple electrospinning method. Impressively, the addition of La elements to LTCLC nanorods with porous structures improved the electrochemical performance of CuO/CoTiO3/TiO2 (TCCT) as an anode for Li‐ion batteries. The LTCLC materials have the capacity of 129.8 mAh g−1 at high current density of 1000 mA g−1 and the coulombic efficiency can be maintained at 98.22 % after 800 cycles, indicating the excellent cycling stability. The excellent electrochemical performance could be assigned to the credible one dimensional nanostructure and synergistic effect of lanthanum elements. The composites may hold great applications as high performance anode materials for LIBs.
Design and Synthesis of Novel Phenothiazine‐Benzothiadiazine‐1,1‐dioxide Hybrid Organic Material for OLED Applications
Authors: Lade Jatin J. , Chiou Shian‐Sung , Tseng Yeh‐Hsiang , Chiu Meng‐Hsuan , Lin Yi‐Fan , Chang Chih‐Hao , Chetti Prabhakar , Chaskar Atul C. 
Published: October 2021

AbstractIn this study, yellow thermally activated delayed fluorescence (TADF) emitter PTZ‐SA has been designed and synthesized by incorporating phenothiazine as donor and benzothiadiazine‐1,1‐dioxide as an acceptor. The molecule is also screened for aggregation induced emission in THF/Water system. PTZ‐SA shows exceptionally high glass transition temperature (Tg) of 188 °C which clearly highlights good thermal stability of the material. The energy gap (ΔEST) between singlet (S1) and triplet (T1) excitons is sufficiently small (0.08 eV) for the reverse intersystem crossing. Yellow electroluminescence peak is observed at 568 nm with Commission Internationale de L′Eclairage coordinates of (0.44, 0.50). The external quantum efficiency of 4.2 % from PTZ‐SA is achieved in yellow emitting OLED with turn on voltage of 5.1 V. Moreover, sufficiently high triplet energy of 2.5 eV and good film forming ability of PTZ‐SA, encouraged us to study its electro‐phosphorescent properties. Nevertheless, the red phosphorescent OLED device incorporating PTZ‐SA dopped with a red emitter Ir(piq)2acac exhibited maximum external quantum efficiency, power efficiency and luminescence efficiency of 8.1 %, 7.2 lm W−1 and 5.1 cd A−1, respectively.
Synthesis of δ,δ‐Diaryl‐α‐cyanoacrylamides and δ,δ‐Diarylallylidiene Malononitriles by Pd(OAc)2 Catalyzed Mizoroki‐Heck Reaction
Authors: Sengupta Ayon , Sarkar Piyali , Maity Suvendu , Basu Soumyadip , Ghosh Prasanta , Rudra Sonali , Mukhopadhyay Chhanda 
Published: October 2021

AbstractAn expeditious route for the stereoselective catalytic monohydration of nitrile and ′CN′ directed regio‐stereoselctive δ‐arylation of various arylallylidene malononitriles affording δ, δ‐Diaryl‐α‐cyanoacrylamides in hydrolysis condition and δ, δ‐Diarylallylidene malononitriles in anhydrous condition by Pd(OAc)2 catalyzed Mizoriki‐Heck reaction is described. This provides an instantaneous formation of a library of compounds in a very short time period and simple operational process. The structure elucidation of the diastereomers was done by HMBC, HSQC, 2‐D NMR experiments and X‐ray single crystallographic analysis. A probable reaction mechanism directed by nitriles and involvement of syn and anti π‐allylic Pd‐complexes has been proposed that is in consonance with the experimental findings and product distributions.
Rafting multiplayer video games
Authors: Pozzan Gabriele , Vardanega Tullio 
Published: October 2021

AbstractConsensus is a central concern for distributed systems, paramount for fault‐tolerant applications. Online multiplayer (video) games are an attractive instance of highly distributed application, where user experience requires resilience provisioning that includes distributed consensus. In this work, we report on experiments we performed on the use of the Raft consensus algorithm in two Proof‐of‐Concept instances of famous video games. Our experiments aim to show the feasibility of such a novel architectural approach, and to assess the ensuing scalability quantitatively against game‐specific performance metrics. To enable the transferability of this effort, we discuss our implementation choices and testing method, as well as the findings from said empirical evaluation.
Behavior of vertically irregular structures near mines: Comparison of responses under seismic and mine blast‐induced ground motion
Authors: Dutta Sekhar Chandra , Kumar Sumit , Bhoyar Palash Sanjay , Hussain Md Ahsaan , Sajal  
Published: October 2021

SummaryDue to architectural and functional considerations, buildings with irregular configurations are frequently constructed with rapid urbanization. During a seismic or blast activity, the performance of a building depends on various factors like adequate lateral strength, stiffness, ductility, regularity, and the extent of simplicity in the configuration. The irregular distributions of the stiffness, mass, and strength in the plan and height of the building create irregularity within the structures. The purpose of this study is to understand the nature of response under seismic ground motion and that obtained from ground vibration generated due to mine blasts if such buildings are situated near mines. This study also emphasizes on identifying the critical location of stress concentration of the structures under both seismic and mine blast‐induced ground motion. Base shear, fundamental natural periods, mode shapes, and member forces for a few buildings with typical irregular configurations and similar buildings with regular counterparts are obtained. Nonlinear dynamic analysis has been carried out on irregular buildings for confirming the trends in behavior observed from linear dynamic analysis. Since the mine blasts take place sequentially, the study also aims to prescribe a suitable delay interval between such series blasts to minimize the vulnerability of vertically irregular seismic structures to the possible extent.
Product of random states and spatial (half-)wormholes
Authors: Goto Kanato , Kusuki Yuya , Tamaoka Kotaro , Ugajin Tomonori 
Published: October 2021

Abstract
We study how coarse-graining procedure of an underlying UV-complete quantum gravity gives rise to a connected geometry. It has been shown, quantum entanglement plays a key role in the emergence of such a geometric structure, namely a smooth Einstein-Rosen bridge. In this paper, we explore the possibility of the emergence of similar geometric structure from classical correlation, in the AdS/CFT setup. To this end, we consider a setup where we have two decoupled CFT Hilbert spaces, then choose a random typical state in one of the Hilbert spaces and the same state in the other. The total state in the fine-grained picture is of course a tensor product state, but averaging over the states sharing the same random coefficients creates a geometric connection for simple probes. Then, the apparent spatial wormhole causes a factorization puzzle. We argue that there is a spatial analog of half-wormholes, which resolves the puzzle in the similar way as the spacetime half-wormholes.
Diameter, width and thickness in the hyperbolic plane
Authors: Horváth Ákos G. 
Published: October 2021

AbstractIn hyperbolic geometry there are several concepts to measure the breadth or width of a convex set. In the first part of the paper we collect them and compare their properties. Than we introduce a new concept to measure the width and thickness of a convex body. Correspondingly, we define three classes of bodies, bodies of constant with, bodies of constant diameter and bodies having the constant shadow property, respectively. We prove that the property of constant diameter follows to the fulfilment of constant shadow property, and both of them are stronger as the property of constant width. In the last part of this paper, we introduce the thickness of a constant body and prove a variant of Blaschke’s theorem on the larger circle inscribed to a plane-convex body of given thickness and diameter.
Mathematical modelling of thermoelasticity problems for thin biperiodic cylindrical shells
Authors: Tomczyk B. , Gołąbczak M. , Litawska A. , Gołąbczak A. 
Published: October 2021

AbstractThe objects of consideration are thin linearly thermoelastic Kirchhoff-Love-type circular cylindrical shells having a periodically microheterogeneous structure in circumferential and axial directions (biperiodic shells). The aim of this contribution is to formulate and discuss two new averaged mathematical models for the analysis of selected dynamic thermoelasticity problems for the shells under consideration: the non-asymptotictolerance and the consistent asymptotic models. The starting equations are the well-known governing equations of linear Kirchhoff-Love theory of thin elastic cylindrical shells combined with Duhamel–Neumann thermoelastic constitutive relations and coupled with the known linearized Fourier heat conduction equation in which the heat sources are neglected. For the microperiodic shells under consideration, the starting equations mentioned above have highly oscillating, non-continuous and periodic coefficients. The tolerance model is derived applying the tolerance averaging technique and a certain extension of the known stationary action principle. It has constant coefficients depending also on a cell size. Hence, this model makes it possible to study the effect of a microstructure size on the global shell thermoelasticity (the length-scale effect). The consistent asymptotic model is obtained using the consistent asymptotic approach. It has constant coefficients being independent of the period lengths. Moreover, the comparison between the tolerance model for biperiodic shells proposed here and the known tolerance model for cylindrical shells with a periodic structure in the circumferential direction only (uniperiodic shells) is presented.
Natural isotope correction improves analysis of protein modification dynamics
Authors: Dietze Jörn , van Pijkeren Alienke , Egger Anna-Sophia , Ziegler Mathias , Kwiatkowski Marcel , Heiland Ines 
Published: October 2021

AbstractStable isotope labelling in combination with high-resolution mass spectrometry approaches are increasingly used to analyze both metabolite and protein modification dynamics. To enable correct estimation of the resulting dynamics, it is critical to correct the measured values for naturally occurring stable isotopes, a process commonly called isotopologue correction or deconvolution. While the importance of isotopologue correction is well recognized in metabolomics, it has received far less attention in proteomics approaches. Although several tools exist that enable isotopologue correction of mass spectrometry data, the majority is tailored for the analysis of low molecular weight metabolites. We here present PICor which has been developed for isotopologue correction of complex isotope labelling experiments in proteomics or metabolomics and demonstrate the importance of appropriate correction for accurate determination of protein modifications dynamics, using histone acetylation as an example.
Skew-Orthogonal Polynomials in the Complex Plane and Their Bergman-Like Kernels
Authors: Akemann Gernot , Ebke Markus , Parra Iván 
Published: October 2021

AbstractNon-Hermitian random matrices with symplectic symmetry provide examples for Pfaffian point processes in the complex plane. These point processes are characterised by a matrix valued kernel of skew-orthogonal polynomials. We develop their theory in providing an explicit construction of skew-orthogonal polynomials in terms of orthogonal polynomials that satisfy a three-term recurrence relation, for general weight functions in the complex plane. New examples for symplectic ensembles are provided, based on recent developments in orthogonal polynomials on planar domains or curves in the complex plane. Furthermore, Bergman-like kernels of skew-orthogonal Hermite and Laguerre polynomials are derived, from which the conjectured universality of the elliptic symplectic Ginibre ensemble and its chiral partner follow in the limit of strong non-Hermiticity at the origin. A Christoffel perturbation of skew-orthogonal polynomials as it appears in applications to quantum field theory is provided.
Gemeinsame Grundlage von Alexithymie und expressiver Suppression
Authors: Schiewer Vera , Dietz Thilo , Tavenrath Sally , Öztürk-Arenz Hülya , Jäger Reinhold S. , Klein Anne , Labouvie Hildegard , Kusch Michael 
Published: October 2021

Zusammenfassung
Hintergrund
Internationale Studien konnten bereits einen Zusammenhang zwischen Alexithymie und expressiver Suppression belegen. Im deutschsprachigen Raum wurde dieser Zusammenhang bisher nur sehr selten betrachtet. Übergeordnetes Ziel der vorliegenden Studie war die Untersuchung eines korrelativen und faktoriellen Zusammenhangs von Alexithymie und expressiver Suppression.

Material und Methoden
Insgesamt 317 Personen nahmen einer Onlinebefragung teil. Mithilfe der deutschsprachigen Versionen der Toronto Alexithymia Scale-26 (TAS-26) und des Emotion Regulation Questionnaire (ERQ) wurden Daten zu Alexithymie und expressiver Suppression erfasst.

Ergebnisse
Es bestanden signifikante Korrelationen zwischen der Subskala „Schwierigkeit bei der Identifikation von Gefühlen“ der TAS-26 und der Skala „Unterdrückung“ des ERQ (r = 0,5; p < 0,001) sowie zwischen der Subskala „Schwierigkeit bei der Beschreibung von Gefühlen“ der TAS-26 und der Skala „Unterdrückung“ des ERQ (r = 0,64; p < 0,001). Die Ergebnisse einer explorativen Faktorenanalyse ergaben eine Zwei-Faktoren-Lösung mit einem gemeinsamen Faktor für die TAS-26-Subskalen „Schwierigkeit bei der Identifikation von Gefühlen“ und „Schwierigkeit bei der Beschreibung von Gefühlen“ und der Skala „Unterdrückung“ des ERQ mit einer gemeinsamen Varianz von 38,2 % (χ2 = 363,843; p < 0,001; Kaiser-Meyer-Olkin[KMO]-Wert = 0,699).

Schlussfolgerung
Die Ergebnisse legen nahe, dass den Skalen der TAS-26 in den Komponenten „Schwierigkeit bei der Identifikation von Gefühlen“ und „Schwierigkeit bei der Beschreibung von Gefühlen“ sowie der Skala „Unterdrückung“ des ERQ in der Komponente der „expressiven Suppression“ ein gemeinsames Konstrukt zugrunde liegt, das mit dem Begriff der Sprachlosigkeit belegt werden kann.
Power profiling and the power-duration relationship in cycling: a narrative review
Authors: Leo Peter , Spragg James , Podlogar Tim , Lawley Justin S. , Mujika Iñigo 
Published: October 2021

AbstractEmerging trends in technological innovations, data analysis and practical applications have facilitated the measurement of cycling power output in the field, leading to improvements in training prescription, performance testing and race analysis. This review aimed to critically reflect on power profiling strategies in association with the power-duration relationship in cycling, to provide an updated view for applied researchers and practitioners. The authors elaborate on measuring power output followed by an outline of the methodological approaches to power profiling. Moreover, the deriving a power-duration relationship section presents existing concepts of power-duration models alongside exercise intensity domains. Combining laboratory and field testing discusses how traditional laboratory and field testing can be combined to inform and individualize the power profiling approach. Deriving the parameters of power-duration modelling suggests how these measures can be obtained from laboratory and field testing, including criteria for ensuring a high ecological validity (e.g. rider specialization, race demands). It is recommended that field testing should always be conducted in accordance with pre-established guidelines from the existing literature (e.g. set number of prediction trials, inter-trial recovery, road gradient and data analysis). It is also recommended to avoid single effort prediction trials, such as functional threshold power. Power-duration parameter estimates can be derived from the 2 parameter linear or non-linear critical power model: P(t) = W′/t + CP (W′—work capacity above CP; t—time). Structured field testing should be included to obtain an accurate fingerprint of a cyclist’s power profile.
Cosserat Elasticity of Lattice Solids
Authors: Shirani M. , Steigmann D. J. 
Published: October 2021

AbstractWe discuss a model of fibrous solids composed of three families of continuously distributed Kirchhoff rods embedded in a matrix material. This is a special case of Cosserat elasticity in which the basic kinematic descriptors are a single deformation field and three rotation fields, one for each fiber family. The fibers are assumed to convect with the underlying continuum deformation as material curves. Various kinds of internal connectivity, imposing restrictions of the fiber rotations fields, are considered.
Declarative Application Management in the Fog
Authors: Brogi Antonio , Forti Stefano , Guerrero Carlos , Lera Isaac 
Published: October 2021

AbstractOrchestrating next-gen applications over heterogeneous resources along the Cloud-IoT continuum calls for new strategies and tools to enable scalable and application-specific managements. Inspired by the self-organisation capabilities of bacteria colonies, we propose a declarative, fully decentralised application management solution, targeting pervasive opportunistic Cloud-IoT infrastructures. We present a customisable declarative implementation of the approach and validate its scalability through simulation over motivating scenarios, also considering end-user’s mobility and the possibility to enforce application-specific management policies for different (classes of) applications.
Reverse Privatization as a Reaction to the Competitive Environment: Evidence from Solid Waste Collection in Germany
Authors: Demuth Juri , Friederiszick Hans W. , Reinhold Steffen 
Published: October 2021

AbstractAfter earlier waves of privatization, local governments have increasingly taken back control of local service provisions in some sectors and countries and instead started providing those services themselves (reverse privatization). Using a unique panel dataset on the mode of service provision for solid waste collection for German municipalities that cover the years 2003, 2009, and 2015, we investigate the motives for reverse privatization. Our results show that—in deciding whether to insource or not—municipalities react to the cost advantages of private suppliers as well as to the competitive environment and municipal activity: there is more switching to insourcing in concentrated markets and in markets with horizontally or vertically related public services. Local interest groups influence this decision as well.
Effects of aging on protein expression in mice brain microvessels: ROS scavengers, mRNA/protein stability, glycolytic enzymes, mitochondrial complexes, and basement membrane components
Authors: Chandra Partha K. , Cikic Sinisa , Rutkai Ibolya , Guidry Jessie J. , Katakam Prasad V. G. , Mostany Ricardo , Busija David W. 
Published: October 2021

AbstractDifferentially expressed (DE) proteins in the cortical microvessels (MVs) of young, middle-aged, and old male and female mice were evaluated using discovery-based proteomics analysis (> 4,200 quantified proteins/group). Most DE proteins (> 90%) showed no significant differences between the sexes; however, some significant DE proteins showing sexual differences in MVs decreased from young (8.3%), to middle-aged (3.7%), to old (0.5%) mice. Therefore, we combined male and female data for age-dependent comparisons but noted sex differences for examination. Key proteins involved in the oxidative stress response, mRNA or protein stability, basement membrane (BM) composition, aerobic glycolysis, and mitochondrial function were significantly altered with aging. Relative abundance of superoxide dismutase-1/-2, catalase and thioredoxin were reduced with aging. Proteins participating in either mRNA degradation or pre-mRNA splicing were significantly increased in old mice MVs, whereas protein stabilizing proteins decreased. Glycolytic proteins were not affected in middle age, but the relative abundance of these proteins decreased in MVs of old mice. Although most of the 41 examined proteins composing mitochondrial complexes I–V were reduced in old mice, six of these proteins showed a significant reduction in middle-aged mice, but the relative abundance increased in fourteen proteins. Nidogen, collagen, and laminin family members as well as perlecan showed differing patterns during aging, indicating BM reorganization starting in middle age. We suggest that increased oxidative stress during aging leads to adverse protein profile changes of brain cortical MVs that affect mRNA/protein stability, BM integrity, and ATP synthesis capacity.