bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preparation and performance study of anti mud polycarboxylic acid slump retaining agent
Authors: Xiong Qiumin , Chen Xiaobin , Qiu Nianli , Xu Meizhou , Yang Xianxian 
Published: March 2024

Abstract
Anti-mud polycarboxylic acid slump retaining agent was prepared by copolymerization of ethylene glycol monovinyl polyethylene glycol ether, diethyl 4-vinylphenyl phosphate, 2-methyl-2-(4-vinylphenyl) propionic acid, unsaturated carboxylic acid (or unsaturated carboxylic anhydride) and unsaturated carboxylic ester under the action of initiator and molecular weight regulator. The effect of the slump retaining agent on the workability of fine aggregate concrete with different mud contents was tested, and the sensitivity of the slump retaining agent to the mud content of machine-made sand was evaluated. At the same time, the viscosity reduction performance of the slump retaining agent was evaluated by using the emptying time of the inverted slump cone and the flow time of V-funnel and L-box. The experimental results show that the synthesized anti-mud polycarboxylic acid slump retaining agent has favourable effects of anti-mud and viscosity reduction.
Effect of V-N alloying on mechanical properties of HRB400E
Authors: Pang Zhuochun , Zhu Fei , Li Huicheng , Yuan Jing , Wang Haixin 
Published: March 2024

Abstract
V-N alloying is used to improve the mechanical properties of HRB400E steel for construction. The research shows that the adding number of 0.025% V and 0.0080% N can achieve the solidification micro-structure of rolled steel, significantly improve the strength of steel, but also bring the toughening effect, which can reach this yield strength of 430 MPa and its tensile strength of 650 Pa.
Highly Trans-1,4-selective Coordination Polymerization of Polar 2-(2-Fluorophenyl)-1,3-butadiene Catalyzed by Monofluorene Rare-Earth Metal Complexes
Authors: Wang Mingqi , Lu Yongqiu , Ye Yanchun 
Published: March 2024

Abstract
The preparation of high trans-1,4-structure functionalized polyconjugated dienes by high-position/stereoregularity coordination polymerization of polar conjugated dienes can effectively introduce some heteroatom groups into synthetic rubbers. It can not only effectively improve the performance of synthetic rubber but also develop new functional polyconjugated diene materials to broaden its application range. The coordination polymerization reaction of the polar diene 2-(2-fluorophenyl)-1,3-butadiene (o-FBD) with high trans-1,4-structure (95%) has been achieved firstly by using monofluorene scandium rare-earth metal complexes (1-6) activated by co-catalyst system [B(C6F5)4][Ph3C] and Al
i
Bu3, and a plastic polymer P(o-FBD) is obtained, which has a high molecular weight (up to 10.6 × 104g·mol−1) and glass transition temperature from 16.8°C to 22.6°C.
NC/Co@NC catalyst with hollow structure accelerates lithium-sulfur battery reaction kinetics
Authors: Wei Hualiang , Chen Zexiang , Lv Huifang , Zhao Yang , Bao Mengyao , Yu Ke , Guo Xiaowei , Wang Yan 
Published: March 2024

Abstract
Lithium-sulfur (Li-S) batteries have gained significant interest due to their impressive energy density. Nonetheless, poor conductivity and shuttle effect hamper their further development. Here, we prepared NC/Co@NC catalyst materials by a self-templating method to improve the battery performance. The ZIF-8@ZIF-67@PDA was initially prepared by utilizing the favorable compatibility between ZIF and dopamine, and subsequently annealed to form NC/Co@NC materials. The NC/Co@NC catalyst can effectively adsorb lithium polysulfides (LiPSs), lower the reaction barrier and accelerate its conversion to lithium sulfide (Li2S). Moreover, the configuration of the hollow structure enhances the catalyst-electrolyte interface, which can maximize the catalytic ability of NC/Co@NC. The improved ion diffusion rates benefiting from the hollow structure can also be realized. With these combined effects, Li-S cells incorporating the NC/Co@NC hollow catalysts achieved a high sulfur utilization and superior rate behaviour, that is 1176 and 470 mAh g−1 at 0.2 and 4C, respectively. Furthermore, the cells achieved an ultralow capacity degradation of merely 0.08% per cycle after 300 cycles at 1C, further confirming their potential.
High cis-1,4-selectivity and activity coordination (co) polymerization of (polar) dienes by PNP-ligated rare-earth metal bis (aminobenzyl) complexes
Authors: Pei Jingting , Fu Zhijie , Li Xiaofang 
Published: March 2024

Abstract
The research on the synthesis of cis-1,4-selective poly (conjugated diene)s catalyzed by the transition metal complexes has been actively pursued in both industrial and academic laboratories until today. However, there has not been any reported rare-earth catalytic system that can achieve the cis-1,4-selective polymerization of multiple conjugated dienes. Polar and non-polar conjugated dienes, as well as copolymerization of different kinds of conjugated dienes affording novel copoly (diene)s, are included. Herein, the highly cis-1,4-selective homopolymerization of a series of (polar)dienes (such as IP, MY, OC, 2-MOPB, 2-FPB) was achieved by using PNP ligated rare-earth metal bis (aminobenzyl) complexes PNP-Ln (Ln = Ln = Sc, Lu, Y, Gd, Sm, 1-5)/[Ph3C][B(C6F5)4]/Al
i
Bu3 ternary catalyst systems. Moreover, the highly cis-1,4-selective copolymerization of (polar)dienes (such as 2-MOPB and IP, 2-FPB and IP, MEPB and IP, OC and IP as well as 2-FPB and MY) with a board range of comonomers contenting and random or block sequence distribution was also achieved.
A Density Functional Theory Investigation of Cleavage Mechanism of Dimethylsulphoniopropionate by Lyase DddQ
Authors: Wu Hanxiao , Zhang Xuewei 
Published: March 2024

Abstract
Dimethylsulfide (DMS) is released from the dimethylmercaptopropionate (DMSP) lyase decomposition reaction, which is of great significance for the global sulfur cycle. Among the various DMSP lyases, DddQ is one of the most prevalent and effective enzymes, catalyzing the conversion of DMSP into DMS. Using density functional calculations, we performed a detailed investigation of the DddQ reaction employing a concerted β-elimination mechanism via Tyr131 or Tyr120 as a general base. The reaction involves several key processes, including the deprotonation of nucleophile base, hydrogen proton transfer on Cα, and Cβ-S bond cleavage. Notably, the Hα proton transfer step is a critical step in determining the reaction rate in both mechanisms.
Kinetic analysis of pyrolysis of nitrocellulose and 5,5’-bistetrazole-1,1’-diolate (TKX-50)
Authors: Zhang Zilu , Xu Bin 
Published: March 2024

Abstract
For the sake of exploring the decomposition characteristics and kinetic of nitrocellulose and TKX-50 mixtures, Friedman, KAS, and OFW kinetic analysis methods were used to investigate the mixture of nitrocellulose and TKX-50 mixtures. It shows that nitrocellulose and TKX-50 promote each other during the thermal decomposition process. Therefore, this study provides a reference for NC-A and TKX-50 in the application field of explosives.
Quantum chemical study on non-thermal plasma degradation tar in gasification syngas
Authors: Liang Hanzhao , Li Zhigang , Kuang YunKun , Nong Jinlong , Wei Yuwei , Li Yongjun , Lin Qingyu , Pan Zhi , Zhang Zanzan , Huang Qinghua , Lu Jie 
Published: March 2024

Abstract
The bond dissociation energies (BDEs) of benzene, toluene, and naphthalene which are the main components of tar in fluidized bed gasification syngas have been investigated by B3LYP method at 6-31G (d, p), 6-31G+ (d, p), 6-31G++ (d, p) and 6-311G++ (d, p) basis setsof density functional theory (DFT).The structures of benzene, toluene, naphthalene, and corresponding radicals were optimized, and their total energiesand zero-point energies (ZPE) were calculated.The frequency analysis was carried out, then, the transition state and the high order saddle were excluded, and the influence of zero point energy scaling factors was neglected.The results showed thatthe BDEs decreased with increasing computational basis sets. The calculated results obtained by B3LYP/6-31G (d, p) are much closer to the results of the documents than the other three basis sets. This indicates that the basis set of B3LYP/6-31G (d, p) is much more credible in reproducing the BDEs. The lowest electron energy values for the ring opening of benzene, toluene and naphthalene are 8.05 eV, 7.45 eV, and 7.35 eV, respectively, indicating that when the energy of high-energy electrons reaches 8.05 eV, the ring of aromatic hydrocarbon can be broken.
A novel molecular imprinted electrochemical biosensor for sensitive determination of Ganoderic acid A
Authors: Li Wenwei , Xie Yao , Liang Axin 
Published: March 2024

Abstract
Analytical approaches with the features of easy manipulation, cost-effectiveness, and miniature are needed for practice-oriented point-of-care diagnostics. This work prepared the molecularly imprinted polymers (MIPs) to selectively detect Ganoderic acid A (GAA). To determine the optimum composition, we examined diverse functional monomers through batch rebinding experiments. The new method uses nanomaterials-functionalized screen-printed carbon electrode (SPCE) to selectively measure GAA, the critical ingredient in Ganoderma lucidum (G. lucidum). Reduced graphene oxide (RGO) chitosan attached to SPCEs has offered the electrochemical sensor core to detect GAA. Cyclic voltammetry (CV) was performed on the SPCE to electropolymerize MIP using a solution containing GAA with o-phenylenediamine being the template. Thereafter, this sensor was characterized by scanning electron microscopy (SEM), and CV together with electrochemical impedance spectroscopy (EIS). GAA was analyzed through differential pulse voltammetry (DPV) within the 0.1-100 ng/mL linear range, and the limit of detection (LOD) was 0.03 ng/mL. The sensor’s simplicity, selectivity, and environmental friendliness make it ideal to detect GAA.
Time error accumulation in a hierarchical time and clock distribution network with deterministic optical links
Authors: Sidorenko V. , Müller W.F.J. , Emschermann D. , Zabolotny W. , Fröhlich I. , Becker J. ,   the CBM collaboration
Published: March 2024

Abstract
Accurate clock and time distribution is a key requirement for self-triggered streaming data acquisition in the CBM experiment. This distribution is handled by the Timing and Fast Control (TFC) system by clock forwarding and broadcasting the common time over latency-deterministic optical links in a hierarchical FPGA network. The point-to-point optical connections are served by the latency-optimized GBT-FPGA core, which has been developed at CERN. In the presented work, the performance of GBT-FPGA links for time and clock distribution in a scaled TFC system with multiple hops and endpoints has been investigated.
The quality control programme for ITk strip tracker module assembly
Authors: Tishelman-Charny A. ,   the ATLAS ITk collaboration
Published: March 2024

Abstract
The assembly of the ATLAS Inner Tracker requires the construction of 19,000 silicon strip sensor detector modules in eight different geometries. Modules will be assembled and tested at 31 institutes on four continents from sensors, readout chips, and flexes. In order to adhere to the module specifications defined for sufficient tracking performance, a rigorous programme of quality control (QC) was established to cover components at every stage of assembly. This contribution presents an overview of the QC programme for ITk strip tracker modules, issues encountered during the pre-production phase (5% of the production volume), and their solutions.
First results on MPGD prototypes in test beam for MPGD-based HCAL at a future Muon Collider experiment
Authors: Colaleo A. , Buonsante M. , Longo L. , Maggi M. , Pellecchia A. , Radogna R. , Simone F.M. , Stamerra A. , Venditti R. , Verwilligen P.J. , Zaza A. ,   the International Muon Collider collaboration
Published: March 2024

Abstract
The Multi-TeV Muon Collider will allow significant advancement in particle physics and in the understanding of its Standard Model for the era after the High-Luminosity LHC. The Muon Collider physics program involves precise Higgs boson sector measurements and TeV-scale new physics exploration. These goals demand accurate full-event reconstruction. The Particle Flow algorithm, which utilizes tracking, calorimeter, and muon detectors, is ideal for identifying and precisely estimating particle momenta/energies and can accomplish this task. Tracking detectors measure charged particle momenta, while calorimeters provide energy measurements for photons and neutral hadrons. Therefore, combining an exceptional tracking system with high-granularity calorimeters is essential. A major challenge is discerning μμ collision products from beam-induced-background, due to muon decay. To address this, an innovative hadronic calorimeter (HCAL) using Micro Pattern Gas Detectors (MPGDs) is proposed. MPGDs provide robust technology for high radiation and ensure precise spatial measurements. Dedicated studies are needed to assess and optimize the performance of an MPGD-based HCAL, including the development of medium-scale prototypes for performance measurements.
This article describes the studies for a hadronic calorimeter based on MPGDs, relying on advanced technologies such as μ-rwell, resistive MicroMegas, and RPWELL. To assess the performance of MPGD detectors, a test beam was conducted in July 2023 at the Super Proton Synchrotron at CERN. This test beam aimed to evaluate the performance of MPGD detectors with 1×1 cm2 pad readout under beam irradiation. Preliminary results from this test are presented.
The BMS group in D = 6 spacetime dimensions
Authors: Fuentealba Oscar , Henneaux Marc 
Published: March 2024

AbstractThe asymptotic structure of gravity inD = 6 spacetime dimensions is described at spatial infinity in the asymptotically flat context through Hamiltonian (ADM) methods. Special focus is given on the Bondi–Metzner–Sachs (BMS) supertranslation subgroup. It is known from previous studies that the BMS group contains more supertranslations as one goes fromD = 4 toD = 5. Indeed, while the supertranslations are described by one single function of the angles inD = 4, four such functions are neeeded inD = 5. We consider the caseD = 6 with the aim of determining whether the number of supertranslations keeps increasing with the dimension or remains equal to the number found inD = 5. We show that even though there is apparent room for more supertranslations, their number remains equal to theD = 5 value (four): the potentially new supertranslations turn out to define proper gauge transformations corresponding to a redundancy in the description of the system. Critical in the analysis are the boundary conditions chosen to yield a well-defined canonical formalism. Given the computational (but not conceptual) complexity as one increases the dimension, we explicitly discuss the linearized theory and argue that asymptotically, this analysis provides the correct picture. We conclude by considering higher spacetime dimensions where we indicate that the number of physically relevant supertranslations remains equal to four independently of the dimension⩾5.Contribution to Stanley Deser memorial volume ‘Gravity, Strings and Beyond’
Assessment of machinability behaviour of LM24 – nano Al2O3 – gr hybrid composites through stir casting technique
Authors: Surendran R , Kumaravel A 
Published: March 2024

Abstract
This study is focused on developing a novel combination of a hybrid MMC made of LM24 aluminium alloy, nano Al2O3 and Graphite for enhanced machinability. The study conducts a series of experimental runs and evaluates surface roughness and material removal rate. The process parameters of spindle speed, feed, and depth of cut have been varied, while different weight percentages of nano Al2O3 (1%, 3%, and 5%) were incorporated into the LM24 metal matrix alloy along with 1 wt% of Gr. Response Surface Methodology (RSM) is used to optimize the turning parameters and enhance the machining performance for better quality and productivity. The derived optimal machining parameters have been verified through confirmatory tests. An analysis of variance (ANOVA) was used to determine the individual contributions of each parameter to the machinability characteristics. Surface morphology analysis revealed the uniform distribution of nanoparticle reinforcements in the metal matrix. The surface roughness and material removal rate of the machined nanocomposites were studied. The optimized outputs are a minimum surface roughness Ra 0.522 μm and maximum material removal rate MRR 110.2 mm3s–1 The maximum hardness of the MMC composites has been 60.5 HRB.
Electronic structure control of IrO2 via conjugated polymer support for highly efficient oxygen evolution reaction
Authors: Asai Yusaku , Higashimine Koichi , Nishimura Shun , Badam Rajashekar , Matsumi Noriyoshi 
Published: March 2024

Abstract
In this paper, we report synthesis of novel nanoparticle catalyst of iridium oxide supported on conjugated polymer along with evaluation of activity and durability for oxygen evolution reaction. The IrO2/poly(BIAN-thiophene)/TNT catalyst was prepared from iridium complex and poly(BIAN-thiophene)/TNT by hydrothermal method. The synthesized IrO2/poly(BIAN-thiophene)/TNT catalysts was characterized by scanning electron microscopy, transmission electron microscopy, Fourier transfer-infrared spectroscopy, x-ray photoelectron spectroscopy and electrochemical methods. The average particle size of the IrO2 particles on poly(BIAN-thiophene)/TNT was 2.5 nm. The XPS measurement revealed that Ir complex was completely converted to iridium oxide through hydrothermal treatment. The IrO2/poly(BIAN-thiophene)/TNT catalyst showed sufficient performance for OER activity and durability in acidic condition. Our results indicate that IrO2/poly(BIAN-thiophene)/TNT is one of the prospective candidate catalysts for water splitting.
Exploring nonlinear and linear optical properties of N, N’-bis(salicylidene)-o-phenylenediamine (salophen) through Z-scan technique and TD-DFT computational analysis
Authors: Abed Yasaman , Mostaghni Fatemeh , Abed Niloofar 
Published: March 2024

Abstract
This investigation delves into the comprehensive analysis of the linear and nonlinear optical characteristics exhibited by N, N’-bis(salicylidene)-o-phenylenediamine (salophen) using a combination of Z-scan methodology and quantum chemistry calculations. The Z-scan technique facilitated meticulous computations of the third-order susceptibility, nonlinear absorption coefficient, and nonlinear refractive index of the specimen. Specifically, in the solvent DMSO, the assessed values for the nonlinear refractive index, nonlinear absorption coefficient, and third-order susceptibility were determined to be 0.035 × 10–10 cm2
W

−1
, −0.024 × 10–5 cm W

−1
, and 0.596 × 10–5 esu, respectively. Furthermore, quantum mechanical analyses were employed to meticulously calculate the molecular hyperpolarizabilities (β and γ), dipole moment (μ), and dipole polarizability (α) of salophen. This thorough exploration highlighted a notable congruence between the outcomes derived from experimental observations and those obtained through quantum mechanical simulations. The collective findings from both theoretical computations and experimental assessments distinctly showcase the robust nonlinear potential inherent in salophen. These insights suggest its promising suitability and potential as a viable candidate for applications in optical devices. The alignment between theoretical predictions and experimental results underlines the reliability and potential practicality of salophen in the realm of optical technology, emphasizing its significance as a potential material for advancing optical device functionalities.
Mathematical modeling in assessing the risk of restenosis after carotid endarterectomy
Authors: Borisov V G , Zakharov Yu N , Vinogradov R A , Derbilova V P , Ivanova N V 
Published: March 2024

Abstract
Carotid endarterectomy is the main way to combat atherosclerosis of the carotid arteries, which disrupts cerebral circulation. The generally accepted marker of atherogenesis risk are hemodynamic indices associated with near-wall shear stress. The purpose of the work is to conduct a comparative analysis of hemodynamic indices in various carotid bifurcation models. The influence of a virtual change in the geometric shape of the model in order to optimize hemodynamic indices is also being studied. On the basis of computed angiography data, carotid bifurcation models are constructed, in which critical zones of hemodynamic indices are built using computational fluid dynamics. A comparative analysis of the critical zones for different classes of models is carried out. Comparison of averaged indices for critical zones between ‘normal’ and post-operative groups gave more than 5-x worse results for the latter. The same results for the near-bifurcation parts of the zones give a 25% better result for postoperative models. Virtual ‘removal’ of insignificant plaques leads to a deterioration of the indices of up to 40% in the places of the plaque’s former location. The described method makes it possible to build the indices critical zones and compare them for various types of models. A technique for virtual changing the shape of a vessel (virtual surgery) is proposed. The novelty of the approach lies in the use for comparative analysis both real vessel models and hypothetical ‘improved’ virtual ones, as well in the proposed division of post-operative model’s critical zones into subzones of different genesis.
Federalism in Drag
Authors: Bascom Ben 
Published: March 2024

Abstract
This chapter turns to a forgotten figure of eighteenth-century market capitalism who amassed wealth through a chance speculation. To do so, it draws upon drag’s insights on performance and campiness—its aesthetics of imitation and parody—to consider how this self-declared aristocrat, “Lord” Timothy Dexter, seeks inclusion within a Federalist New England as he negotiates his relation to early U.S. market capitalism soon after the Constitution. Dexter commissioned life-size wooden statues of various new republic figures, including himself, and decorated his front lawn with them, thus trying to insert himself into the emerging pantheon of the new nation’s figures of cultural significance.
The Queer Hermit
Authors: Bascom Ben 
Published: March 2024

Abstract
The final chapter examines how the story of an alleged eighteenth-century infanticide by Elizabeth Wilson and her public execution became transformed into a narrative, and a religious tract, about the executed woman’s brother. William “Amos” Wilson became “a recluse from the jars of a contending world” after failing to save his sister from a public execution in 1786. He left behind a life narrative, entitled The Sweets of Solitude (1821), that demonstrates changing notions regarding masculinity in the public sphere. The text of the hermit’s narrative quotes from eighteenth-century translations of Seneca, representing the modern, public world as corrupt and degraded. Because these quotes are not acknowledged in the text, I argue that the narrative resembles a commonplace book with unattributed aphorisms that suggest the depersonalization of republican masculinity.