bluuebunny/crossref_metadata_2025_split huggingface dataset:
Methylprednisolone Pulses and Prolonged Remission in Systemic Lupus Erythematosus: A Propensity Score Analysis of the Longitudinal Lupus‐Cruces‐Bordeaux Inception Cohort
Authors: Ruiz‐Irastorza Guillermo , Paredes‐Ruiz Diana , Herrero‐Galvan Maria , Moreno‐Torres Victor , Hernandez‐Negrin Halbert , Ruiz‐Arruza Ioana , Leonard Cedric , Richez Christophe , Lazaro Estibaliz 
Published: March 2024

ObjectiveThe objective of this study was to analyze the effect of methylprednisolone pulses (MP), given during the first year after the diagnosis of systemic lupus erythematosus (SLE), in achieving prolonged remission according to the degree of lupus activity at presentation.MethodsWe conducted an observational study of routine clinical care data from the Lupus‐Cruces‐Bordeaux cohort. The end point was prolonged remission (ie, during five consecutive yearly visits). The effect of MP on remission during the first year was analyzed in the whole cohort and according to the baseline Systemic Lupus Erythematosus Disease Activity Index 2000 score: <6, 6 to 12, and >12, reflecting mild, moderate, and severe activity, respectively. For adjustment, logistic regression with propensity score (PS) and other therapeutic covariates was performed.ResultsTwo hundred thirty‐three patients were included. Prolonged remission was achieved by 132 patients (57%). MP were associated with prolonged remission (PS‐adjusted odds ratio [OR] 2.50, 95% confidence interval [CI] 1.04–623, P = 0.042). A strong clinical effect was seen among patients with moderate (adjusted OR 5.28, 95% CI 1.27–21.97, P = 0.022) and moderate‐severe SLE activity (adjusted OR 4.07, 95% CI 1.11–14.82, P = 0.033). The administration of MP resulted in reduced average dosages of prednisone during the first year among patient with moderate (mean 6.6 vs 10.2 mg/day, P = 0.017) and severe activity (mean 14 vs 28 mg/day, P = 0.015). The odds of prolonged remission were increased by longer‐term use of hydroxychloroquine (HCQ) and decreased by higher initial doses of prednisone.ConclusionThis study supports the use of MP to induce prolonged remission in patients with SLE, particularly in those with moderate and severe activity. The extended use of HCQ also contributes to achieve prolonged remission.image
A new propulsion system GUI based control amenable model development for high‐power rockets
Authors: Prajapati Soham , Thakar Parth S. , Markana Anilkumar 
Published: March 2024

SummaryThis paper proposes a new algorithm to model and characterize an autonomous high‐power rocket using an indigenously developed graphical user interface (GUI) platform. This platform features a newly devised app, termed as THIEC Rocketry App which embeds the simulation based analysis to determine the design parameters of the rocket, required for a vertical flight. A solid propellant using potassium nitrate and sucrose, also known as rocket‐candy, is considered for the GUI development. The GUI facilitates the designer to specify the desired flight parameters for the rocket propulsion system. Various characteristic plots for visualization and analysis are made available in GUI. The obtained parameters from the GUI are then utilized in computer‐aided designing (CAD) for further identification of geometrical parameters like inertia tensor, center of gravity (CG) and center of pressure (CP). The mathematical control amenable model of the rocket is then developed using first principles so as to achieve an altitude up to 3 km. The overall system represents a complex nonlinear multi‐input multi‐output (MIMO) dynamics, having six degrees of freedom. The Newton‐Euler formulation is employed to develop the equations of motion. The attitude control using canards is analyzed via simulations for the complete flight path ‐ the boost and coast flights. Finally, the developed GUI based model is validated by practically manufacturing the components of the propulsion system for the small‐scale high‐power rocket. The proposed model will create the pathway for the development of some robust model‐based control schemes for such autonomous rockets in future.
Highly Stretchable, Low‐Hysteresis, and Adhesive TA@MXene‐Composited Organohydrogels for Durable Wearable Sensors
Authors: Liu Ying , Tian Guoxing , Du Yingjie , Shi Pengju , Li Na , Li Yunfeng , Qin Zhihui , Jiao Tifeng , He Ximin 
Published: March 2024

AbstractAs wearable sensors advance rapidly, demands for multifunctional conductive soft materials are ever higher, including high stretchability, resilience, adhesiveness and stability, simultaneously in one material, for stable long‐term use. Nanocomposite hydrogels incorporating conductive two‐dimensional (2D) nanofillers, such as MXene‐composited gels, emerge as promising candidates. Yet, fulfilling all above requirements, particularly large stretchability with low hysteresis, remains a challenge, owing to the easy oxidation and weak interactions of MXene nanosheets with polymer chains. Herein, an interfacial engineering strategy is proposed, where tannic acid (TA) with high‐density hydroxyl groups is introduced to encapsulate MXene into a stable TA@MXene nano‐motif and meanwhile increase the hydrogen‐bonding interactions between TA@MXene and polymer network. By incorporating TA@MXene into poly(hydroxyethyl acrylate) (PHEA) network in a glycerol/water binary solvent, the obtained organohydrogel exhibits integrated properties of high stretchability (>500%) with low hysteresis (<3%), superior fatigue resistance (consistent hysteresis over 500 cycles at 300% strain), good adhesiveness, along with long‐term stability (>7 days) and antifreezing abilities (−40 °C). Such organohydrogels demonstrate superior strain‐sensitivity and thermosensitive capacities, enabling accurate and reliable detection of human movements, electrocardiogram signals, and body temperature. This general approach of stabilizing nanomaterials while effectively enhancing nanomaterial‐polymer bonding is applicable for synthesizing diverse high‐performance nanocomposited gels.
Engineering an Artificial Coating Layer of Metal Porphyrin‐Based Porous Organic Polymers Toward High Stable Aqueous Zinc‐Ion Batteries
Authors: Zhang Xupeng , Liu Yuying , Shen Pengfei , Ren Liqiu , Han Donglai , Feng Ming , Wang Heng‐Guo 
Published: March 2024

AbstractAqueous zinc‐ion batteries (AZIBs) possess high theoretical capacity and good safety, making them highly hopeful for large‐scale energy storage applications. Nevertheless, the uncontrolled growth of Zn dendrites on anode significantly reduces the cycle life of AZIBs. In this study, a series of porphyrin‐based porous organic polymers (CuTAPP‐NTCDA‐POP and ZnTAPP‐NTCDA‐POP) are synthesized using aminophenylporphyrin (TAPP) and aromatic dianhydride, which are served as porous protective coating layers for Zn anode. The coating effectively prevents the formation of Zn dendrites and guides the deposition of Zn2+ because of the abundance of zincophilic sites. As expected, the symmetric cells equipped with the optimum ZnTAPP‐NTCDA‐POP@Zn anode demonstrate a longer cycle life of over 1200 h at 0.5 mA cm−2 compared to bare Zn (64 h). Moreover, when the ammonium vanadate (NHVO) cathode is coupled with ZnTAPP‐NTCDA‐POP@Zn anode, the resulting full cell displays superior cycle stability that sustains over 350 cycles with a higher invertible capacity (225 mAh g−1 at 1 A g−1). This performance surpasses that of a full cell equipped with just a bare Zn anode. This work proposes a viable strategy to address Zn dendrites, presenting a promising horizon for the widespread application of AZIBs.
Achieving Long‐Life Ni‐Rich Cathodes with Improved Mechanical‐Chemical Properties Via Concentration Gradient Structure
Authors: Huang Zhiyong , Yan Jie , Liu Zhengbo , Wang Wei , Tang Yu , Zhang Zhibo , Yang Tingting , Wang Xingyu , Li Xingjun , Kong Qingyu , Lan Si , Zhu He , Ren Yang , Liu Qi 
Published: March 2024

AbstractThe irreversible deterioration of electrochemical performance in Ni‐rich cathode materials, attributed to crack propagation and undesired side reactions, poses a critical barrier to the further development of high‐energy power batteries for electrical vehicles (EVs). Herein, a concentration gradient strategy is proposed for synthesizing a Ni‐rich cathode with enhanced mechanical and electrochemical stability to address the issues related to the irreversible structural deterioration. Notably, the concentration gradient structure contributes to superior mechanical strength in secondary particles due to the radially orientated primary particles resulted from Mn composition grading, which effectively alleviate the internal strain caused by structural changes and fatigue destruction during successive cycling. Moreover, the Mn‐rich surface minimizes the parasitic side reactions at the electrode–electrolyte interface. Benefitting from the above, the concentration gradient sample can deliver ≈180.1 mA h g−1 at 1 C and retain 96.2% of its initial discharge capacity after 100 cycles. This work demonstrates that the concentration gradient structure can simultaneously improve the mechanical and chemical stabilities of Ni‐rich cathode and offers a feasible way for designing stable lithium‐ion batteries with high energy density.
Boosting Charge Carrier Transport by Layer‐Stacked MnxV2O6/V2C Heterostructures for Wide‐Temperature Zinc‐Ion Batteries
Authors: Zhang Feng , Kang Yongchao , Zhao Xiaoru , Li Houzhen , Dong Huitong , Wei Wangran , Sang Yuanhua , Liu Hong , Wang Shuhua 
Published: March 2024

AbstractVanadium‐based materials are considered promising cathodes for high‐energy‐density zinc‐ion batteries (ZIBs) owing to their open skeleton structure and multielectron redox reactions. However, most vanadium‐based materials have low intrinsic conductivities and sluggish reaction kinetics, resulting in poor cycling properties. Herein, a layer‐stacked MnxV2O6+V2CTx (MVO+V2C) heterostructure cathode with high capacity and superior cyclic stability based on an electrostatic self‐assembly strategy is proposed. The abundant heterointerfaces between MVO and V2C dramatically enhanced the intrinsic conductivity of the composites. Moreover, the generation of built‐in electric fields at the layer‐stacked MVO/V2C heterointerface reduced the migration energy barrier of Zn2+, accelerated charge carrier transport, and enhanced the reaction kinetics of the cathode. In addition, the abundance of nano‐channels in the heterostructures facilitates rapid electrolyte transport in composites. Therefore, the MVO+V2C cathode showed a capacity of 389.4 mAh g−1 after 590 cycles at 0.5 A g−1 and 290.2 mAh g−1 after 6000 cycles at 5 A g−1, demonstrating its superior cycling stability. In particular, the assembled MVO+V2C batteries exhibited remarkable electrochemical performance at −20–40 °C, revealing its excellent wide‐temperature adaptability. This work offers important insights into the design of cathode materials for long‐lifespan and wide‐temperature ZIBs.
In Situ Synthesized Low‐Dimensional Perovskite for >25% Efficiency Stable MA‐Free Perovskite Solar Cells
Authors: Li Yong , Duan Yuwei , Liu Zhike , Yang Lu , Li Hongxiang , Fan Qunping , Zhou Hui , Sun Yiqiao , Wu Meizi , Ren Xiaodong , Yuan Ningyi , Ding Jianning , Yang Shaoming , Liu Shengzhong 
Published: March 2024

AbstractDeveloping an additive to effectively regulate the perovskite crystallization kinetics for the optimized optoelectronic properties of perovskite film plays a vital role in obtaining high efficiency and stable perovskite solar cells (PSCs). Herein, a new additive is designed and directly synthesized in perovskite precursor solution by utilizing an addition reaction between but‐3‐yn‐1‐amine hydrochloride (BAH) and formamidinium iodide. It is found that its product may control the intermediate precursor phase for regulating perovskite nucleation, leading to advantageous 2D perovskite to induce growth of perovskite along the preferred [001] orientation with not only released lattice strain but also strong interaction with perovskite to passivate its surface defects. By taking advantage of the above synergistic effects, the optimized PSC delivers an efficiency of 25.19% and a high open‐circuit voltage (VOC) of 1.22 V. Additionally, the devices demonstrate good stability, remaining over 90% of their initial efficiencies under ambient atmosphere conditions for 60 days, high temperature of 85 °C for 200 h, or maximum power point tracking for 500 h.
Observation of Omnidirectional Exchange Bias at All‐Antiferromagnetic Polycrystalline Heterointerface
Authors: Asakura Mihiro , Higo Tomoya , Matsuo Takumi , Uesugi Ryota , Nishio‐Hamane Daisuke , Nakatsuji Satoru 
Published: March 2024

AbstractDue to promising functionalities that may dramatically enhance spintronics performance, antiferromagnets are the subject of intensive research for developing the next‐generation active elements to replace ferromagnets. In particular, the recent experimental demonstration of tunneling magnetoresistance and electrical switching using chiral antiferromagnets has sparked expectations for the practical integration of antiferromagnetic materials into device architectures. To further develop the technology to manipulate the magnetic anisotropies in all‐antiferromagnetic devices, it is essential to realize exchange bias through the interface between antiferromagnetic multilayers. Here, the first observation on the omnidirectional exchange bias at an all‐antiferromagnetic polycrystalline heterointerface is reported. This experiment demonstrates that the interfacial energy causing the exchange bias between the chiral‐antiferromagnet Mn3Sn/collinear‐antiferromagnet MnN layers is comparable to those found at the conventional ferromagnet/antiferromagnet interface at room temperature. In sharp contrast with previous reports using ferromagnets, the magnetic field control of the unidirectional anisotropy is found to be omnidirectional due to the absence of the shape anisotropy in the antiferromagnetic multilayer. The realization of the omnidirectional exchange bias at the interface between polycrystalline antiferromagnets on amorphous templates, highly compatible with existing Si‐based devices, paves the way for developing ultra‐low power and ultra‐high speed memory devices based on antiferromagnets.
Multi‐Functional Actuators Made with Biomass‐Based Graphene‐Polymer Films for Intelligent Gesture Recognition and Multi‐Mode Self‐Powered Sensing
Authors: Weng Mingcen , Zhou Jiahao , Zhou Peidi , Shang Ruzhi , You Minghua , Shen Guozhen , Chen Huamin 
Published: March 2024

AbstractMulti‐functional actuation systems involve the mechanical integration of multiple actuation and sensor devices with external energy sources. The intricate combination makes it difficult to meet the requirements of lightweight. Hence, polypyrrole@graphene‐bacterial cellulose (PPy@G‐BC) films are proposed to construct multi‐responsive and bilayer actuators integrated with multi‐mode self‐powered sensing function. The PPy@G‐BC film not only exhibits good photo‐thermoelectric (PTE) properties but also possesses good hydrophilicity and high Young's modulus. Thus, the PPy@G‐BC films are used as active layers in multi‐responsive bilayer actuators integrated with self‐powered sensing functions. Here, two types of multi‐functional actuators integrated with self‐powered sensing functions is designed. One is a light‐driven actuator that realizes the self‐powered temperature sensing function through the PTE effect. Assisted by a machine learning algorithm, the self‐powered bionic hand can realize intelligent gesture recognition with an accuracy rate of 96.8%. The other is humidity‐driven actuators integrated a zinc‐air battery, which can realize self‐powered humidity sensing. Based on the above advantages, these two multi‐functional actuators are ingeniously integrated into a single device, which can simultaneously perform self‐powered temperature/humidity sensing while grasping objects. The highly integrated design enables the efficient utilization of environmental energy sources and complementary synergistic monitoring of multiple physical properties without increasing system complexity.
A Combined Wind Harvesting and Speed Sensing System Based on Constant‐Voltage Triboelectric Nanogenerator
Authors: Hu Yuexiao , Li Xinyuan , Gao Yikui , Zhao Zhihao , Liu Xiaoru , He Lixia , Zhang Baofeng , Zhou Linglin , Wang Zhong Lin , Wang Jie 
Published: March 2024

AbstractThe triboelectric nanogenerator (TENG) holds significant potential for applications in energy harvesting and environment monitoring. However, a notable challenge lies in developing a combined system capable of efficiently harvesting energy and providing real‐time self‐powered sensing. Here, a combined wind energy harvesting and speed sensing (EHSS) system is constructed based on a noncontact electricity‐induced constant‐voltage TENG (EICV‐TENG) that achieves constant output by coupling two different phases and incorporates a parasitic sensing module in a single phase. Through the optimization of system integration, the EICV‐TENG achieves a current density of 28.7 mA m−2 and an average power density of 0.26 W m−2 Hz−1. With an optimal power management, the energy output efficiency of the EICV‐TENG reaches up to 96%. And EICV‐TENG can stably power 32 commercial hygrothermographs connected in parallel with the PMC at a wind speed of 7 m s−1. In addition, the EHSS system demonstrates excellent real‐time sensing performance based on the correlation between the peak number of pulse output in a single phase and wind speeds. This work contributes to the advancement of TENG technology for a combined energy harvesting and self‐powered sensing system in the context of the Internet of Things (IoTs).
Structure and Internal Dynamics of Short RNA Duplexes Determined by a Combination of Pulsed EPR Methods and MD Simulations
Authors: Gauger Maximilian , Heinz Marcel , Halbritter Anna‐Lena J. , Stelzl Lukas S. , Erlenbach Nicole , Hummer Gerhard , Sigurdsson Snorri Th. , Prisner Thomas F. 
Published: March 2024

AbstractWe used EPR spectroscopy to characterize the structure of RNA duplexes and their internal twist, stretch and bending motions. We prepared eight 20‐base‐pair‐long RNA duplexes containing the rigid spin‐label Çm, a cytidine analogue, at two positions and acquired orientation‐selective PELDOR/DEER data. By using different frequency bands (X‐, Q‐, G‐band), detailed information about the distance and orientation of the labels was obtained and provided insights into the global conformational dynamics of the RNA duplex. We used 19F Mims ENDOR experiments on three singly Çm‐ and singly fluorine‐labeled RNA duplexes to determine the exact position of the Çm spin label in the helix. In a quantitative comparison to MD simulations of RNA with and without Çm spin labels, we found that state‐of‐the‐art force fields with explicit parameterization of the spin label were able to describe the conformational ensemble present in our experiments. The MD simulations further confirmed that the Çm spin labels are excellent mimics of cytidine inducing only small local changes in the RNA structure. Çm spin labels are thus ideally suited for high‐precision EPR experiments to probe the structure and, in conjunction with MD simulations, motions of RNA.
Ultrathin Free‐Standing Porous Aromatic Framework Membranes for Efficient Anion Transport
Authors: Du Wenguang , Liu Lin , Yin Liying , Li Bo , Ma Yu , Guo Xiaoyu , Zang Hong‐Ying , Zhang Ning , Zhu Guangshan 
Published: March 2024

AbstractPorous aromatic frameworks (PAFs) show promising potential in anionic conduction due to their high stability and customizable functionality. However, the insolubility of most PAFs presents a significant challenge in their processing into membranes and subsequent applications. In this study, continuous PAF membranes with adjustable thickness were successfully created using liquid‐solid interfacial polymerization. The rigid backbone and the stable C−C coupling endow PAF membrane with superior chemical and dimensional stabilities over most conventional polymer membranes. Different quaternary ammonium functionalities were anchored to the backbone through flexible alkyl chains with tunable length. The optimal PAF membrane exhibited an OH− conductivity of 356.6 mS ⋅ cm−1 at 80 °C and 98 % relative humidity. Additionally, the PAF membrane exhibited outstanding alkaline stability, retaining 95 % of its OH− conductivity after 1000 hours in 1 M NaOH. To the best of our knowledge, this is the first application of PAF materials in anion exchange membranes, achieving the highest OH− conductivity and exceptional chemical/dimensional stability. This work provides the possibility for the potential of PAF materials in anionic conductive membranes.
Lewis Acid Decorated Hexacyanodiborane(6) Dianion
Authors: Zapf Ludwig , Finze Maik 
Published: March 2024

AbstractFirst examples of diborane(6) dianions decorated with weakly coordination B(C6F5)3 (BCF) groups and SiEt3+ moieties have been synthesized demonstrating the synthetic potential of the [B2(CN)6]2− dianion. [B2{CNB(C6F5)3}6]2− (1) was isolated as potassium and tetrabutylammonium salt. 1 is a rare example for a weakly coordinating dianion and it was used for the stabilization of the carbocation [Ph3C]+ and the oxonium acid [H(OEt2)2]+. Reaction of [Ph3C]21 with HSiEt3 resulted in the silylated neutral diborane(6) [B2{CNB(C6F5)3}4(CNSiEt3)2] (2) in which two BCF groups have been selectively replaced by SiEt3+ substituents, underscoring the stability and chemical versatility of the [B2(CN)6]2− dianion. The chemical properties and physicochemical data of 1 and 2 provide insight into electronic, coordinating, and steric properties of theses novel diborane(6) compounds.
Dual cross‐linking of XNBR latex with epoxy‐functional calcium silicate particles for the production of accelerator‐free medical gloves
Authors: Grabmayer Theresa , Manhart Jakob , Fleischmann Darya , Kaiser Simon , Schaller Raimund , Holzner Armin , Schlögl Sandra 
Published: March 2024

AbstractIn this work, an innovative dual cross‐linking strategy for carboxylated nitrile butadiene rubber (XNBR) latex using epoxy‐modified calcium silicate particles is presented. In their role as dual cross‐linker, the particles are able to form covalent bonds (nucleophilic ring opening of epoxy moieties) as well as ionic cross‐links (calcium ions of the inorganic core) across the carboxylic acid groups of the rubber. To characterize the curing efficiency, thin elastomer films are prepared by using a conventional coagulant dipping process and their cross‐link densities, curing kinetics, and tensile properties are investigated as a function of the concentration of the cross‐linker and curing time. The results show that latex films containing 5 phr of epoxy‐functional particles give the highest tensile strength, which is further improved by pre‐vulcanizing the liquid latex compound at 60°C for 30 min. The latex formulations are stable over 3 days and the pre‐cured films exhibit a high resistance against gamma sterilization and subsequent accelerated aging. Moreover, sterile films do not cause any skin irritation or skin sensitization reactions, showing the high potential of epoxy‐functional particles in the production of accelerator‐free hypoallergenic gloves.