bluuebunny/crossref_metadata_2025_split huggingface dataset:
Online state and time‐varying parameter estimation using the implicit equal‐weights particle filter
Authors: Satoh Mineto , van Leeuwen Peter Jan , Nakano Shin'ya 
Published: March 2024

AbstractA method is proposed for resilient and efficient estimation of the states and time‐varying parameters in nonlinear high‐dimensional systems through a sequential data assimilation process. The importance of estimating time‐varying parameters lies not only in improving prediction accuracy but also in determining when model characteristics change. We propose a particle‐filter‐based method that incorporates nudging techniques inspired by optimization algorithms in machine learning by taking advantage of the flexibility of the proposal density in particle filtering. However, as the model resolution and number of observations increase, filter degeneracy tends to be the obstacle to implementing the particle filter. Therefore, this proposed method is combined with the implicit equal‐weights particle filter (IEWPF), in which all particle weights are equal. The method is validated using the 1000‐dimensional linear model with an additive parameter and the 1000‐dimensional Lorenz‐96 model, where the forcing term is parameterized. The method is shown to be capable of resilient and efficient parameter estimation for parameter changes over time in our application with a linear observation operator. This leads to the conjecture that it applies to realistic geophysical, climate, and other problems.
Implementing sustainability in teaching: The role of sustainability leadership and transformational leadership in the context of higher education institutions
Authors: Eustachio João Henrique Paulino Pires , Leal Filho Walter , Salvia Amanda Lange , Guimarães Yana Medeiros , Brandli Luciana L. , Trevisan Laís Viera , Barbir Jelena , Caldana Adriana Cristina Ferreira 
Published: March 2024

AbstractThis paper aims to explore the mechanism by which sustainability leadership (SL) and transformational leadership (TL) contribute to implementing sustainability‐related aspects and the adoption of the SDGs by the teaching staff and whether these relationships are mediated by the higher education institutions' (HEIs) level of social innovation tendency. The authors relied on a world survey containing questions developed according to the literature to achieve the results, receiving 603 answers from teaching staff in 102 developed and developing countries. To analyse the data, exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were deployed to check the instruments and the model's structure of factors, and structural equation modelling with hypotheses testing was adopted to understand the level of significance and the magnitude of the relationship between the constructs. The results indicate that SL has a significantly strong relationship with TL, social innovation tendency, and the adoption of sustainability aspects in teaching; however, it is not possible to support the existence of a significant relationship between TL and the adoption of sustainability aspects in teaching, and between social innovation tendency and the adoption of sustainability aspects in teaching. Theoretical and practical implications are explored.
Mild Synthesis of Planar PdPtAuAgCuIr Nanocrystals with Granular Edges for Improved Ethanol Electrooxidation
Authors: Zhou Ke , Wang Yingying , Tao Xiansen , Ma Yanyun , Zheng Yiqun 
Published: March 2024

AbstractWe report a mild, one‐pot synthesis of PdPtAuAgCuIr multimetallic nanocrystals with controlled shapes and explore their applications as the electrocatalysts for ethanol electrooxidation in alkaline medium. The success of current synthesis relies on the co‐reduction of six metal precursors in the presence of octadecylammonium chloride and ascorbic acid at an elevated temperature. The resulting products are featured with an in‐plane core‐shell structure, together with the trigonal/hexagonal plate decorated with granular edges. When serving as EOR electrocatalysts, the carbon‐supported PdPtAuAgCuIr nanocrystals exhibit more than five‐fold increase in mass activity as compared to that of commercial Pt/C, as well as improved reaction kinetics and long‐term durability. DFT calculations disclose that the reduced energy barrier renders the Pd‐based multimetallic catalyst in catalytic performance. The present study provides a feasible strategy to create multimetallic nanocrystals with controlled two‐dimensional morphology under ambient conditions, shedding light for rational design over advanced fuel cell catalysts composed of multimetallic alloy.
14‐Electron Redox Chemistry Enabled by Salen‐Based π‐Conjugated Framework Polymer Boosting High‐Performance Lithium‐Ion Storage
Authors: Zhang Xinlu , Kazemi Seyedeh Alieh , Xu Xingtao , Hill Jonathan P. , Wang Jiachen , Li Haibo , Alshehri Saad M. , Ahamad Tansir , Bando Yoshio , Yamauchi Yusuke , Wang Yun , Pan Likun 
Published: March 2024

AbstractA paucity of redox centers, poor charge transport properties, and low structural stability of organic materials obstruct their use in practical applications. Herein, these issues have been addressed through the use of a redox‐active salen‐based framework polymer (RSFP) containing multiple redox‐active centers in π‐conjugated configuration for applications in lithium‐ion batteries (LIBs). Based on its unique architecture, RSFP exhibits a superior reversible capacity of 671.8 mAh g−1 at 0.05 A g−1 after 168 charge‐discharge cycles. Importantly, the lithiation/de‐lithiation performance is enhanced during operation, leading to an unprecedented reversible capacity of 946.2 mAh g−1 after 3500 cycles at 2 A g−1. The structural evolution of RSFP is studied ex situ using X‐ray photoelectron spectroscopy, revealing multiple active C═N, C─O, and C═O sites and aromatic sites such as benzene rings. Remarkably, the emergence of C═O originated from C─O is triggered by an electrochemical process, which is beneficial for improving reversible lithiation/delithiation behavior. Furthermore, the respective strong and weak binding interactions between redox centers and lithium ions, corresponding to theoretical capacities of 670.1 and 938.2 mAh g−1, have been identified by density functional theory calculations manifesting 14‐electron redox reactions. This work sheds new light on routes for the development of redox‐active organic materials for energy storage applications.
Biodegradable, Strong, and Hydrophobic Regenerated Cellulose Films Enriched with Esterified Lignin Nanoparticles
Authors: Tian Rui , Wang Chao , Jiang Weikun , Janaswamy Srinivas , Yang Guihua , Ji Xingxiang , Lyu Gaojin 
Published: March 2024

AbstractThe scientific community is pursuing significant efforts worldwide to develop environmentally viable film materials from biomass, particularly transparent, high‐performance regenerated cellulose (RC) films, to replace traditional plastics. However, the inferior mechanical performance and hydrophilic nature of RC films are generally not suitable for use as a substitute for plastics in practical applications. Herein, lignin homogenization is used to synthesize high‐performance composite films. The esterified lignin nanoparticles (ELNPs) with dispersible and binding advantages are prepared through esterification and nanometrization. In the presence of ELNPs, RC films exhibit a higher tensile strength (110.4 MPa), hydrophobic nature (103.6° water contact angle, 36.6% water absorption at 120 min, and 1.127 × 10−12 g cm cm−2 s−1 Pa−1 water vapor permeability), and exciting optical properties (high visible and low ultraviolet transmittance). The films further display antioxidant activity, oxygen barrier ability, and thermostability. The films completely biodegrade at 12 and 30% soil moisture. Overall, this study offers new insights into lignin valorization and regenerated cellulose composite films as novel bioplastic materials.
Removing Conjugated Polymers from Aligned Carbon Nanotube Arrays
Authors: Han Jie , Xu Xiaoguang , Zhang Zhiyong 
Published: March 2024

AbstractAligned carbon nanotube (A‐CNT) with high semiconducting purity and high‐density have been considered as one of the most promising active channels for field‐effect transistors (FETs), but conjugated polymer dispersant residues on the surface of A‐CNT have become the main obstacle for its further development in electronics applications. In this work, a series of removable conjugated polymers (CPs) are designed and synthesized to achieve favorable purification and alignment for CNT arrays with a high density of ≈360 CNTs/µm. Furthermore, a removal process of CPs on the CNT array film is developed. Raman spectra show that the CNTs in array film are almost not damaged after the removal process, and the G/D ratio is as high as 35. The field‐effect transistors (FETs) are fabricated with a saturation current density up to 600 µA µm−1 and a current on–off ratio of ≈105, even with a relatively long channel length of ≈3 µm.
Evolutionary Optimized, Monocrystalline Gold Double Wire Gratings as a Novel SERS Sensing Platform
Authors: Sweedan Amro O. , Pavan Mariela J. , Schatz Enno , Maaß Henriette , Tsega Ashageru , Tzin Vered , Höflich Katja , Mörk Paul , Feichtner Thorsten , Bashouti Muhammad Y. 
Published: March 2024

AbstractAchieving reliable and quantifiable performance in large‐area surface‐enhanced Raman spectroscopy (SERS) substrates poses a formidable challenge, demanding signal enhancement while ensuring response uniformity and reproducibility. Conventional SERS substrates often made of inhomogeneous materials with random resonator geometries, resulting in multiple or broadened plasmonic resonances, undesired absorptive losses, and uneven field enhancement. These limitations hamper reproducibility, making it difficult to conduct comparative studies with high sensitivity. This study introduces an innovative approach that addresses these challenges by utilizing monocrystalline gold flakes to fabricate well‐defined plasmonic double‐wire resonators through focused ion‐beam lithography. Inspired by biological strategy, the double‐wire grating substrate (DWGS) geometry is evolutionarily optimized to maximize the SERS signal by enhancing both excitation and emission processes. The use of monocrystalline material minimizes absorption losses and ensures shape fidelity during nanofabrication. DWGS demonstrates notable reproducibility (RSD = 6.6%), repeatability (RSD = 5.6%), and large‐area homogeneity > 104 µm2. It provides a SERS enhancement for sub‐monolayer coverage detection of 4‐Aminothiophenol analyte. Furthermore, DWGS demonstrates reusability, long‐term stability on the shelf, and sustained analyte signal stability over time. Validation with diverse analytes, across different states of matter, including biological macromolecules, confirms the sensitive and reproducible nature of DWGSs, thereby establishing them as a promising platform for future sensing applications.
Giant Deformation Induced Staggered‐Layer Structure Promoting the Thermoelectric and Mechanical Performance in n‐Type Bi2(Te, Se)3
Authors: Zhang Fudong , Zhu Lujun , Song Mingzhen , Cao Xiaofang , Pang Xiaohui , Liang Pengfei , Peng Zhanhui , Chao Xiaolian , Yang Zupei , Wu Di 
Published: March 2024

AbstractBismuth telluride has long been recognized as the most promising near‐room temperature thermoelectric material for commercial application; however, the thermoelectric performance for n‐type Bi2(Te, Se)3‐based alloys is far lagging behind that of its p‐type counterpart. In this work, a giant hot deformation (GD) process is implemented in an optimized Bi2Te2.694Se0.3I0.006+3 wt%K2Bi8Se13 precursor and generates a unique staggered‐layer structure. The staggered‐layered structure, which is only observed in severely deformed crystals, exhibits a preferential scattering on heat‐carrying phonons rather than charge‐carrying electrons, thus resulting in an ultralow lattice thermal conductivity while retaining high‐weight carrier mobility. Moreover, the staggered‐layer structure is located adjacent to the van der Waals gap in Bi2(Te, Se)3 lattice and is able to strengthen the interaction between anion layers across the gap, leading to obviously improved compressive strength and Vickers hardness. Consequently, a high peak figure of merit ZT of ≈ 1.3 at 423 K, and an average ZT of ≈ 1.2 at 300–473 K can be achieved in GD sample. This study demonstrates that the GD process can successfully decouple the electrical and thermal transports with simultaneously enhanced mechanic performance.
Revealing the Charge Storage Mechanism in Porous Carbon to Achieve Efficient K Ion Storage
Authors: Jiang Mingchi , Sun Ning , Li Tianyu , Yu Jiaxu , Somoro Razium Ali , Jia Mengqiu , Xu Bin 
Published: March 2024

AbstractConstructing a porous structure is considered an appealing strategy to improve the electrochemical properties of carbon anodes for potassium‐ion batteries (PIBs). Nevertheless, the correlation between electrochemical K‐storage performance and pore structure has not been well elucidated, which hinders the development of high‐performance carbon anodes. Herein, various porous carbons are synthesized with porosity structures ranging from micropores to micro/mesopores and mesopores, and systematic investigations are conducted to establish a relationship between pore characteristics and K‐storage performance. It is found that micropores fail to afford accessible active sites for K ion storage, whereas mesopores can provide abundant surface adsorption sites, and the enlarged interlayer spacing facilitates the intercalation process, thus resulting in significantly improved K‐storage performances. Consequently, PCa electrode with a prominent mesoporous structure achieves the highest reversible capacity of 421.7 mAh g−1 and an excellent rate capability of 191.8 mAh g−1 at 5 C. Furthermore, the assembled potassium‐ion hybrid capacitor realizes an impressive energy density of 151.7 Wh kg−1 at a power density of 398 W kg−1. The proposed work not only deepens the understanding of potassium storage in carbon materials with distinctive porosities but also paves a path toward developing high‐performance anodes for PIBs with customized energy storage capabilities.
High‐Throughput and Scalable Exfoliation of Large‐Sized Ultrathin 2D Materials by Ball‐Milling in Supercritical Carbon Dioxide
Authors: Navik Rahul , Tan Huijun , Zhang Hao , Shi Liyun , Li Jia , Zhao Yaping 
Published: March 2024

AbstractThe 2D materials exhibit numerous technological applications, but their scalable production is a core challenge. Herein, ball milling exfoliation in supercritical carbon dioxide (scCO2) and polystyrene (PS) is demonstrated to completely exfoliate hexagonal boron nitride nanosheets (BNNSs), graphene, molybdenum disulfide (MoS2), and tungsten disulfide (WS2). The exfoliation yield of 91%, 93%, 92%, and 92% and average aspect ratios of 743, 565, 564, and 502 for BNNSs, graphene, MoS2, and WS2, respectively, are achieved. Integrating exfoliated BNNSS in the polystyrene matrix, 3768 % thermal conductivity in the axial direction and 316% in the cross‐plane direction at 12 wt.% loading is increased. Also, the in‐plane and cross‐plane electrical conductivity of 6.3 × 10−4 S m−1 and 6.6 × 10−3 S m−1, respectively, and the electromagnetic interference (EMI) of 63.3 dB is achieved by exfoliated graphene nanosheets based composite. High thermal and electrical conductivities and EMI shielding are attributed to the high aspect ratio and ultrathin morphology of the exfoliated nanosheets, which exert high charge mobility and form better the percolation network in the composite films due to their high surface area. The process demonstrate herein can produce substantial quantities of diverse 2D nanosheets for widespread commercial utilization.
Sinapic acid protects against lead acetate‐induced lung toxicity by reducing oxidative stress, apoptosis, inflammation, and endoplasmic reticulum stress damage
Authors: Akaras Nurhan , Kucukler Sefa , Gur Cihan , Ileriturk Mustafa , Kandemir Fatih Mehmet 
Published: March 2024

AbstractLead acetate (PbAc) is a compound that produces toxicity in many tissues after exposure. Sinapic acid (SNP) possesses many biological and pharmacological properties. This study aimed to investigate the efficacy of SNP on the toxicity of PbAc in lung tissue. PbAc was administered orally at 30 mg/kg and SNP at 5 or 10 mg/kg for 7 days. Biochemical, genetic, and histological methods were used to investigate inflammatory, apoptotic, endoplasmic reticulum stress, and oxidative stress damage levels in lung tissue. SNP administration induced PbAc‐reduced antioxidant (GSH, SOD, CAT, and GPx) and expression of HO‐1 in lung tissue. It also reduced MDA, induced by PbAc, and thus alleviated oxidative stress. SNP decreased the inflammatory markers NF‐κB, TNF‐α and IL‐1β levels induced by PbAc in lung tissue and exhibited anti‐inflammatory effect. PbAc increased apoptotic Bax, Apaf‐1, and Caspase‐3 mRNA transcription levels and decreased anti‐apoptotic Bcl‐2 in lung tissues. SNP decreased apoptotic damage by reversing this situation. On the other hand, SNP regulated these markers and brought them closer to the levels of the control group. PbAc caused prolonged ER stress by increasing the levels of ATF6, PERK, IRE1α, GRP78 and this activity was stopped and tended to retreat with SNP. After evaluating all the data, While PbAc caused toxic damage in lung tissue, SNP showed a protective effect by reducing this damage.
Lifecycle of surgical devices: Global, environmental, and regulatory considerations
Authors: Wahlstedt Eric R. , Wahlstedt John C. , Rosenberg Jenna S. , deVries Catherine R. 
Published: March 2024

AbstractBackgroundTechnological advancements, improved surgical access, and heightened demand for surgery have fueled unprecedented device and supply turnover impelling wealthy hospitals to upgrade continually and sell, donate, recycle, or dispose of used, expired, antiquated, or surplus goods. This paper reviews the issues related to device and supply lifecycles and discusses the opportunities and challenges they present for sustainable surgical growth in low‐ and middle‐income (LMICs) countries.ObservationsThis review found, in LMICs countries, regulatory disparities persist that limit effective harmonization secondary to highly variable national policies and a lack of prioritized enforcement. Heterogeneity in the regulatory landscape, specifically in the classification, nomenclature, and identification of medical devices, encumbers effective regulation and distribution. Once devices are sold, donated, or reused in LMICs countries, complexities arise in regulatory compliance, maintenance, and appropriate use of these technologies. At the end of the lifecycle, waste management poses significant obstacles with limited resources hindering the implementation of best practices.ConclusionThere are major disparities in access to quality surgical equipment and supplies around the world. Improved communication between relevant stakeholders and harmonization of manufacture and disposal regulations will be needed to ensure adequate and appropriate responses to these challenges.Trial registration number: Not applicable.
Nanotechnology in development of next generation of stent and related medical devices: Current and future aspects
Authors: Islam Paromita , Schaly Sabrina , Abosalha Ahmed Kh. , Boyajian Jacqueline , Thareja Rahul , Ahmad Waqar , Shum‐Tim Dominique , Prakash Satya 
Published: March 2024

AbstractCoronary stents have saved millions of lives in the last three decades by treating atherosclerosis especially, by preventing plaque protrusion and subsequent aneurysms. They attenuate the vascular SMC proliferation and promote reconstruction of the endothelial bed to ensure superior revascularization. With the evolution of modern stent types, nanotechnology has become an integral part of stent technology. Nanocoating and nanosurface fabrication on metallic and polymeric stents have improved their drug loading capacity as well as other mechanical, physico‐chemical, and biological properties. Nanofeatures can mimic the natural nanofeatures of vascular tissue and control drug‐delivery. This review will highlight the role of nanotechnology in addressing the challenges of coronary stents and the recent advancements in the field of related medical devices. Different generations of stents carrying nanoparticle‐based formulations like liposomes, lipid‐polymer hybrid NPs, polymeric micelles, and dendrimers are discussed highlighting their roles in local drug delivery and anti‐restenotic properties. Drug nanoparticles like Paclitaxel embedded in metal stents are discussed as a feature of first‐generation drug‐eluting stents. Customized precision stents ensure safe delivery of nanoparticle‐mediated genes or concerted transfer of gene, drug, and/or bioactive molecules like antibodies, gene mimics via nanofabricated stents. Nanotechnology can aid such therapies for drug delivery successfully due to its easy scale‐up possibilities. However, limitations of this technology such as their potential cytotoxic effects associated with nanoparticle delivery that can trigger hypersensitivity reactions have also been discussed in this review.This article is categorized under:
Implantable Materials and Surgical Technologies > Nanotechnology in Tissue Repair and Replacement
Therapeutic Approaches and Drug Discovery > Nanomedicine for Cardiovascular Disease
Therapeutic Approaches and Drug Discovery > Emerging Technologies
Navigating the landscapes of spatial transcriptomics: How computational methods guide the way
Authors: Li Runze , Chen Xu , Yang Xuerui 
Published: March 2024

AbstractSpatially resolved transcriptomics has been dramatically transforming biological and medical research in various fields. It enables transcriptome profiling at single‐cell, multi‐cellular, or sub‐cellular resolution, while retaining the information of geometric localizations of cells in complex tissues. The coupling of cell spatial information and its molecular characteristics generates a novel multi‐modal high‐throughput data source, which poses new challenges for the development of analytical methods for data‐mining. Spatial transcriptomic data are often highly complex, noisy, and biased, presenting a series of difficulties, many unresolved, for data analysis and generation of biological insights. In addition, to keep pace with the ever‐evolving spatial transcriptomic experimental technologies, the existing analytical theories and tools need to be updated and reformed accordingly. In this review, we provide an overview and discussion of the current computational approaches for mining of spatial transcriptomics data. Future directions and perspectives of methodology design are proposed to stimulate further discussions and advances in new analytical models and algorithms.This article is categorized under:
RNA Methods > RNA Analyses in Cells
RNA Evolution and Genomics > Computational Analyses of RNA
RNA Export and Localization > RNA Localization
Londoner Reaktionen auf die Querelle des Anciens et des Modernes. John Evelyns Übersetzung von Fréart de Chambrays Parallèle, Christopher Wren, Antonio Verrio und das Royal Hospital in Chelsea (1682‒1689)
Authors: Strunck Christina 
Published: March 2024

ZusammenfassungThis article cites the example of the Royal Hospital in Chelsea endowed by King Charles II of England in 1681 to discuss interlingual, inter- and intramedial translations processes that apply not only to that hospital (a home for war veterans), but to the entire replanning of London after the major conflagration of 1666. John Evelyn’s English translation of the Parallèle de l’architecture antique et de la moderne by Roland Fréart de Chambray, published in 1664, forms a frame of reference enabling a more precise understanding of the guidelines of urbanist design and the characteristics of the architecture and interior decoration of the Royal Hospital in Chelsea. Both the architect Christopher Wren and the painter Antonio Verrio made reference to the Querelle et Anciens und des Modernes in their contributions to the hospital’s design, thus addressing the political and cultural competition between England and France in the late phase of the Stuart reign by visual means.