bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tubeless field anaesthesia for surgical removal of an aspirated endoscopy capsule
Authors: Grounds G. S. , Dent H. , Nunes C. , Dhar V. 
Published: August 2023

SummaryCapsule endoscopy is a safe, minimally invasive procedure used to investigate gastrointestinal bleeding of unknown origin that persists or recurs after a negative initial endoscopy. The most common adverse effects of capsule endoscopy include abdominal pain, nausea and vomiting. Capsule pulmonary aspiration, although a rare complication, has been reported in the literature. Most reported cases resolve without further medical intervention. In these cases, the capsule is either expelled by coughing, or it re‐enters the oropharynx and is then swallowed. In a small number of cases, the capsule remains in the lung, unable to be expectorated. This requires prompt diagnosis and emergency bronchoscopic removal under general anaesthesia. Due to the smooth, rounded surfaces of the capsule, it may be difficult to grasp, and consequently extraction may be technically challenging. The existing literature contains limited documentation on anaesthetic and surgical approaches for managing an aspirated endoscopy capsule. In this case report, we present the management of an aspirated endoscopy capsule in a district general hospital, in which thoracic surgery was not available. Local resources were used to manage this potentially life‐threatening complication without patient transfer. In our case, we provided a tubeless field to optimise surgical access. This facilitated the successful surgical extraction of the endoscopy capsule from the left main bronchus.
Catalytic combustion of a dendrimer containing ferrocene units with anti‐migration performance on composite propellant
Authors: Chen Dingning , Yu Haojie , Wang Li , Vatsadze Sergey Z. , Liu Jinyi , Wang Yu 
Published: August 2023

Ferrocene‐based compounds are promising burning rate catalysts due to their attractive catalytic activity, flammability, and non‐toxic performance. Unfortunately, the high‐migration issue of the ferrocene‐based catalysts makes it challenging to store composite solid propellants for a long time. Therefore, a dendrimer containing ferrocene units with anti‐migration ability was designed herein. The introduction of polar groups provides a large number of interaction sites for anti‐migration, and no migration of the dendrimer in the propellant was observed after 4 weeks of the aging test. For catalytic performance, the results showed that the thermal decomposition temperature of ammonium perchlorate could be reduced from 404°C to 369°C by adding 3 wt% ferrocene‐based dendrimer. Moreover, compared with the propellant mixed with Catocene, the propellant containing ferrocene‐based dendrimer showed a lower pressure exponent (0.47) and a higher burning rate (2.03 mm·s−1, at 0.1 MPa).
Quantum Bayesian computation
Authors: Polson Nick , Sokolov Vadim , Xu Jianeng 
Published: August 2023

AbstractQuantum Bayesian computation is an emerging field that levers the computational gains available from quantum computers. They promise to provide an exponential speed‐up in Bayesian computation. Our article adds to the literature in three ways. First, we describe how quantum von Neumann measurement provides quantum versions of popular machine learning algorithms such as Markov chain Monte Carlo and deep learning that are fundamental to Bayesian learning. Second, we describe quantum data encoding methods needed to implement quantum machine learning including the counterparts to traditional feature extraction and kernel embeddings methods. Third, we show how quantum algorithms naturally calculate Bayesian quantities of interest such as posterior distributions and marginal likelihoods. Our goal then is to show how quantum algorithms solve statistical machine learning problems. On the theoretical side, we provide quantum versions of high dimensional regression, Gaussian processes and stochastic gradient descent. On the empirical side, we apply a quantum FFT algorithm to Chicago house price data. Finally, we conclude with directions for future research.
Carbon emission reduction: Understanding the micro‐foundations of dynamic capabilities in companies with a strategic orientation for sustainability performance
Authors: Chevrollier Nicolas , van Lieshout Johannes W. F. C. , Argyrou Aikaterini , Amelink Johannes 
Published: August 2023

AbstractThis article aims to identify the micro‐foundations of dynamic capabilities that underpin a strategic orientation for sustainability performance in order to reduce carbon emissions. These micro‐foundations are examined in relation to two types of strategic orientation for sustainability performance: instrumental and stewardship. A qualitative research design is used to investigate four Dutch stock‐listed companies with either an instrumental or a stewardship strategic orientation. The research shows that certain micro‐foundations of dynamic capabilities achieve carbon emission reductions. Sensing, through measuring carbon emissions, supports a transparent raising of awareness on this issue. Seizing is based on a collaborative and carbon‐driven capturing of value enabled by clear financial incentives linked to reducing carbon emissions. Transforming is supported by an ambidextrous organizational structure and the active diffusion of knowledge concerning carbon emission reduction. Top management can deliver a significant impulse to achieve the desired level of influence related to carbon emission reduction. Our analysis reveals five dimensions (level of influence, level of transparency, level of responsibility, logic of value creation, and logic of embeddedness) that explain the relation between a strategic orientation for sustainability performance and the associated sustainable performance achieved in carbon emission reduction.
ent‐Herqueidiketal and epi‐Peniciherqueinone Isolated from a Mushroom Derived Fungus Penicillium herquei YNJ‐35
Authors: Tan Hong‐Yu , Yang Yu , Xu Rui , Zhao Xue , Zhu Shuai‐Ming , Gong He‐Xiang , Wang Zi‐Lin , Lu Yue , Liu Hong‐Wei , Li Chang‐Wei 
Published: August 2023

AbstractA new polyaromatic metabolite, ent‐herqueidiketal (1), and a new phenalenone derivative, epi‐peniciherqueinone (2), along with twelve known compounds 3–14, were isolated from the fungus Penicillium herquei YNJ‐35, a symbiotic fungus of Pulveroboletus brunneopunctatus collected from Nangunhe Nature Reserve, Yunnan Province, China. The structures of 1–14 and the absolute configurations of 1 and 2 were determined by their spectroscopic data or by their single‐crystal X‐ray diffraction analysis or optical rotation values. Compound 1 showed strong antibacterial activity against Staphylococcus aureus (ATCC 29213) with minimum inhibitory concentration (MIC) of 8 μg/mL. In the cytotoxicity assays, compound 1 showed weak inhibitory activity against breast cancer MCF‐7 and mice microglial BV2 cells with half maximal inhibitory concentration (IC50) of 17.58 and 29.56 μM; compound 14 showed stronger cytotoxicity against BV2 and MCF‐7 cells with IC50 values of 6.57 and 10.26 μM.
Effects of Fluorinated Functionalization of Linker on Quercetin Encapsulation, Release and Hela Cell Cytotoxicity of Cu‐Based MOFs as Smart pH‐Stimuli Nanocarriers
Authors: Parsaei Mozhgan , Akhbari Kamran , Tylianakis Emmanuel , Froudakis George E. 
Published: August 2023

AbstractControlled delivery of target molecules is required in many medical and chemical applications. For such purposes, metal–organic frameworks (MOFs), which possess desirable features such as high porosity, large surface area, and adjustable functionalities, hold great potential as drug carriers. Herein, Quercetin (QU), as an anticancer drug, was loaded on Cu2(BDC)2(DABCO) and Cu2(F4BDC)2)DABCO) MOFs (BDC=1,4‐benzenedicarboxylate and DABCO=1,4‐diazabicyclo[2.2.2]octane). As these Cu‐MOFs have a high surface area, an appropriate pore size, and biocompatible ingredients, they can be utilized to deliver QU. The loading efficiency of QU in these MOFs was 49.5 % and 41.3 %, respectively. The drug‐loaded compounds displayed sustained drug release over 15 days, remarkably high drug loading capacities and pH‐controlled release behavior. The prepared nanostructures were characterized by different characterization technics including FT‐IR, PXRD, ZP, TEM, FE‐SEM, UV‐vis, and BET. In addition, MTT assays were carried out on the HEK‐293 and HeLa cell lines to investigate cytotoxicity. Cellular apoptosis analysis was performed to investigate the cell death mechanisms. Grand Canonical Monte Carlo simulations were conducted to analyze the interactions between MOFs and QU. Moreover, the stability of MOFs was also investigated during and after the drug release process. Ultimately, kinetic models of drug release were evaluated.
Vapor‐Induced Assembly of a Platinum(II) Complex Loaded on Layered Double Hydroxide Nanoparticles
Authors: Morimoto Tamami , Yoshida Masaki , Sato‐Tomita Ayana , Nozawa Shunsuke , Takayama Junichi , Hiura Satoshi , Murayama Akihiro , Kobayashi Atsushi , Kato Masako 
Published: August 2023

AbstractControlled self‐assembly of PtII complexes is key to the development of optical and stimuli‐responsive materials, but designing and precisely controlling them is still difficult owing to weak intermolecular interactions. Herein, we report the successful water‐vapor‐induced assembly of an anionic PtII complex [Pt(CN)2(ppy)]− (Hppy=2‐phenylpyridine) electrostatically loaded onto cationically charged layered double hydroxide (LDH) nanoparticles consisting of Mg2+ and Al3+ ions. When the PtII complexes were densely loaded onto the LDH nanoparticles, the assembly was maintained, even in dilute aqueous media. In the case of sparse loading, the PtII complexes were loaded discretely in the dry state; however, when water vapor was adsorbed, the increased mobility of the PtII complexes led to their assembly on the LDH nanoparticles. The presence of water vapor led to a drastic change in luminescence from green to orange.
Giant breast phyllodes tumor with silent thromboembolism: A case report
Authors: Wang Qinbo , Wei Lina , Zhou Yuan , Ou Yingjuan , Li Haiyan 
Published: August 2023

AbstractBackgroundPhyllodes tumor (PT) is a solid fibroepithelial breast lesion with proliferation of stromal and epithelial elements, usually presents with a rapidly expanding feature. Venous thromboembolism (VTE) have been reported to increase the burden in terms of mortality and morbidity of malignant tumor, and associate with worsened survival. However, benign PTs with silent thromboembolism that have not yet been reported, we report an unusual case of massive benign PT that grew on the left side of the breast in a cauliflower‐shaped form and presented severe chronic blood loss and deep VTE.CaseA 37‐year‐old woman with uncontrolled pain presented a rapidly enlarging left breast mass, measuring approximately 30 × 20 × 15 cm3 that first started 25 years ago. color Doppler ultrasound showed a large mass lesion on the left breast and deep VTE, several enlarged lymph nodes in the left axilla and mediastinum, which presented a malignant character. However, the biopsies of the mass did not show evidence of malignancy and the pathology result was considered to be benign PT. The patient was treated with an inferior vena cava and anticoagulation, the operation was arranged according to the surgical procedure, the patient recovered very well after mastectomy.ConclusionThis case is unique in that the giant breast mass presented with malignant character, was eventually pathologically confirmed to be benign PT, and it's rare that the benign tumor accompanied with silent thromboembolism. This finding describes the atypia features of giant benign PT and reminds the surgeon to consider the factor of VTE and risk when encountering ulcerative benign breast tumor and avoid excessive treatment.
Does corporate social responsibility mediate the relationship between corporate governance and firm performance? Empirical evidence from BRICS countries
Authors: Akhter Waseem , Hassan Arshad 
Published: August 2023

AbstractThis study analyzes how corporate governance affects financial performance and explores the role of corporate social responsibility as a mediator for 495 firms located in emerging economies in BRICS countries, including Brazil, Russia, India, China, and South Africa from 2011 to 2021. This study evaluates the impact of various board characteristics such as board size, board independence, and gender diversity, as well as ownership structure elements such as family, foreign, and institutional shareholding, on firm performance in BRICS countries. This study uses a generalized method of moments (GMM) methodology to examine the relationship between corporate governance, corporate social responsibility (CSR), and firm performance. The results reveal that board attributes including size, independence, and gender diversity positively influence firm performance. All three components of ownership structure, family, foreign, and institutional shareholdings, positively affect firm performance. CSR partially mediates the positive relationship between corporate governance and firm performance. This study contributes to the literature by adding CSR as a mediating variable in the relationship between corporate governance and firm performance in BRICS countries. These findings suggest that managers must understand that effective corporate governance mechanisms are essential for better performance and should align their interests with firms' objectives. The mediation effect of CSR implies that policymakers should consider CSR as an additive tool to enhance firm performance rather than as an additional expenditure.
DC‐link voltage control of small capacitor PMSM drive system based on MPC algorithm
Authors: Song Jian , Song Wenxiang , Lin Hongmin 
Published: August 2023

SummaryThe permanent magnet synchronous motor (PMSM) drive system with small dc‐link capacitor will have the problem of unstable drive system due to the small damping of the LC filter and the negative impedance characteristics of the constant power load. The input LC filter can suppress interference and is essential for the normal operation of the drive, but it may not match the impedance of the post‐stage inverter, causing the drive system to become unstable. In this paper, by constructing the dc‐link voltage prediction model, combined with the PMSM current predictive control, the weighted cost function of the model predictive control (MPC) strategy is designed to realize the motor optimal control and the dc‐link voltage fluctuation suppression control. To avoid introducing additional sensors when constructing the dc‐link voltage model, a source state observer that can estimate the dc‐link voltage and input current is constructed. Simulation and experimental results are provided to verify the effectiveness of the proposed method.
Model predictive and SoC balancing control of a CHB inverter in battery energy storage application using reward functions
Authors: Zhao Yongtian , Wang Xiaogang , Hu Wei , Yang Ru , Zou Tao 
Published: August 2023

SummaryThis article presents an improved model predictive current control algorithm combined with a novel state of charge (SoC) balancing approach for a three‐phase cascaded H‐bridge inverter in battery energy storage applications. Based on the model predictive control with elimination of redundant voltage vectors, neighboring vectors of the last voltage vectors are used to find the optimal ones in only one control cycle, which solves the problems of high computational burden and slow dynamic response. To overcome the unsuitability of the conventional cost function in SoC balancing, the reward functions that effectively balance the inter‐phase SoCs, inner‐phase SoCs, and inner‐phase dc voltages are presented respectively. Simulation and hardware‐in‐the‐loop‐based experimental results validate the effectiveness of the proposed strategy.
A high‐speed and low‐latency hardware implementation of RC4 cryptographic algorithm
Authors: Sun Caiban , Liu Wenrui , Cheng Jiafeng , Sun Nengyuan , Peng Zhaokang , Sha Heng , Yu Weize 
Published: August 2023

AbstractIn this letter, a high‐speed and low‐latency Ron Rivest‐4 (RC4) encryption algorithm is designed based on SMIC 14 nm process. Since the key issue of limiting the throughput of RC4 encryption algorithm is the swapping operation of S‐box, this proposed design is capable of achieving four swapping operations of S‐box within a clock cycle by utilizing fully combinational logic designs and advanced computations. All 256 swapping operations of key scheduling algorithm (KSA) can be done in 64 clock cycles. Moreover, the novel design greatly improves the encryption efficiency of RC4 since each clock cycle offers 4 bytes of key stream. The whole area can be further optimized by reusing the existing modules, and a lightweight countermeasure is embedded into the RC4 design to break the correlation between the processed data and power dissipation against differential power analysis (DPA) attacks. Finally, the whole design is assessed by the SMIC 14 nm process design kits (PDK). The corresponding clock frequency, throughput, area, and latency, respectively, are achieved as 1 GHz, 32 Gbps, 51,596  m2, and 74 clock cycles.
Elemental composition and material properties of radular teeth in the heterobranch snail Gastropteron rubrum (Mollusca, Gastropoda, Cephalaspidea) foraging on hard organisms
Authors: Krings Wencke , Neumann Charlotte , Gorb Stanislav N. , Koehnsen Alexander , Wägele Heike 
Published: August 2023

AbstractThe molluscan feeding structure is the radula, a chitinous membrane with teeth, which are highly adapted to the food and the substrate to which the food is attached. In Polyplacophora and Patellogastropoda, the handling of hard ingesta can be facilitated by high content of chemical compounds containing Fe or Si in the tooth cusps. Other taxa, however, possess teeth that are less mineralized, even though animals have to avoid structural failure or high wear during feeding as well. Here, we investigated the gastropod Gastropteron rubrum, feeding on hard Foraminifera, diatoms and Porifera. Tooth morphologies and wear were documented by scanning electron microscopy and their mechanical properties were tested by nanoindentation. We determined that gradients of hard‐ and stiffness run along each tooth, decreasing from cusp to basis. We also found that inner lateral teeth were harder and stiffer than the outer ones. These findings allowed us to propose hypotheses about the radula‐ingesta interaction. In search for the origins of the gradients, teeth were visualized using confocal laser scanning microscopy, to determine the degree of tanning, and analyzed with energy‐dispersive X‐ray spectroscopy, to test the elemental composition. We found that the mechanical gradients did not have their origins in the elemental content, as the teeth did not contain high proportions of metals or other minerals. This indicates that their origin might be the degree of tanning. However, in the tooth surfaces that interact with the ingesta high Si and Ca contents were determined, which is likely an adaptation to reduce wear.
An elevational shift facilitated the Mesoamerican diversification of Azure‐hooded Jays (Cyanolyca cucullata) during the Great American Biotic Interchange
Authors: McCormack John E. , Hill Molly M. , DeRaad Devon A. , Kirsch Eliza J. , Reckling Kelsey R. , Mutchler Marquette J. , Ramirez Brenda R. , Campbell Russell M. L. , Salter Jessie F. , Pizarro Alana K. , Tsai Whitney L. E. , Bonaccorso Elisa 
Published: August 2023

AbstractThe Great American Biotic Interchange (GABI) was a key biogeographic event in the history of the Americas. The rising of the Panamanian land bridge ended the isolation of South America and ushered in a period of dispersal, mass extinction, and new community assemblages, which sparked competition, adaptation, and speciation. Diversification across many bird groups, and the elevational zonation of others, ties back to events triggered by the GABI. But the exact timing of these events is still being revealed, with recent studies suggesting a much earlier time window for faunal exchange, perhaps as early as 20 million years ago (Mya). Using a time‐calibrated phylogenetic tree, we show that the jay genus Cyanolyca is emblematic of bird dispersal trends, with an early, pre‐land bridge dispersal from Mesoamerica to South America 6.3–7.3 Mya, followed by a back‐colonization of C. cucullata to Mesoamerica 2.3–4.8 Mya, likely after the land bridge was complete. As Cyanolyca species came into contact in Mesoamerica, they avoided competition due to a prior shift to lower elevation in the ancestor of C. cucullata. This shift allowed C. cucullata to integrate itself into the Mesoamerican highland avifauna, which our time‐calibrated phylogeny suggests was already populated by higher‐elevation, congeneric dwarf‐jays (C. argentigula, C. pumilo, C. mirabilis, and C. nanus). The outcome of these events and fortuitous elevational zonation was that C. cucullata could continue colonizing new highland areas farther north during the Pleistocene. Resultingly, four C. cucullata lineages became isolated in allopatric, highland regions from Panama to Mexico, diverging in genetics, morphology, plumage, and vocalizations. At least two of these lineages are best described as species (C. mitrata and C. cucullata). Continued study will further document the influence of the GABI and help clarify how dispersal and vicariance shaped modern‐day species assemblages in the Americas.
Trapping an Unexpected/Unprecedented Hexanuclear Ce(III) Hydrolysis Product with Neutral 4‐Amino‐1,2,4‐triazole
Authors: Wineinger Hannah , Smetana Volodymyr , Hiti Ethan , Baryshnikov Glib , Qu Fengrui , Ågren Hans , Mudring Anja‐Verena , Rogers Robin D. 
Published: August 2023

AbstractUsing Ce(III) as both a representative lanthanide and actinide analog, the ability of mixtures of acidic and basic azoles to allow direct access to homoleptic N‐donor f‐element complexes in one pot reactions from hydrated salts as starting materials was examined by reacting mixtures of 4‐amino‐1,2,4‐triazole (4‐NH2‐1,2,4‐Triaz), 5‐amino‐tetrazole (5‐NH2‐HTetaz), and 1,2,3‐triazole (1,2,3‐HTriaz) in 1 : 1 and 1 : 3 ratios with CeCl3 ⋅ 7H2O, [C2mim]3[CeCl6] ([C2mim]+=1‐ethyl‐2‐methylimidazolium), and Ce(NO3)3 ⋅ 6H2O. Although unsuccessful in our goal, structural analysis revealed that neutral 4‐NH2‐1,2,4‐Triaz is structure directing via η2μ2κ2 bridging, with the formation of the dinuclear complexes [Ce2Cl2(μ2‐4‐NH2‐1,2,4‐Triaz)4(H2O)8]Cl4 ⋅ 4H2O, [Ce2(μ2‐4‐NH2‐1,2,4‐Triaz)4(4‐NH2‐1,2,4‐Triaz)2(Cl)6], and [4‐NH2‐1,2,4‐HTriaz][Ce2(μ2‐4‐NH2‐1,2,4‐Triaz)2(μ2‐NO3)(NO3)6(H2O)2]. When the synthetic conditions favored hydrolysis, the hexanuclear Ce(III) complex [Ce6(μ3‐O)4(μ3‐OH)2(μ3‐Cl)2(Cl)6(μ2‐4‐NH2‐1,2,4‐Triaz)12] ⋅ 7H2O was isolated. This unexpected hydrolysis product represents the first example of a high nuclearity lanthanide complex where all Ln atoms are pairwise connected through 12 N‐donor ligands or 12 neutral bridging ligands of any type, a rare example of incorporation of non‐oxo coordinating anions in the M6X8 core, and the first reported Ce(III) hexanuclear complex of this type.