bluuebunny/crossref_metadata_2025_split huggingface dataset:
2D Molybdenum Carbide MXenes for Enhanced Selective Detection of Humidity in Air
Authors: Pazniak Hanna , Varezhnikov Alexey S. , Kolosov Dmitry A. , Plugin Ilya A. , Vito Alessia Di , Glukhova Olga E. , Sheverdyaeva Polina M. , Spasova Marina , Kaikov Igor , Kolesnikov Evgeny A. , Moras Paolo , Bainyashev Alexey M. , Solomatin Maksim A. , Kiselev Ilia , Wiedwald Ulf , Sysoev Victor V. 
Published: October 2021

Abstract2D transition metal carbides and nitrides (MXenes) open up novel opportunities in gas sensing with high sensitivity at room temperature. Herein, 2D Mo2CTx flakes with high aspect ratio are successfully synthesized. The chemiresistive effect in a sub‐µm MXene multilayer for different organic vapors and humidity at 101–104 ppm in dry air is studied. Reasonably, the low‐noise resistance signal allows the detection of H2O down to 10 ppm. Moreover, humidity suppresses the response of Mo2CTx to organic analytes due to the blocking of adsorption active sites. By measuring the impedance of MXene layers as a function of ac frequency in the 10−2–106 Hz range, it is shown that operation principle of the sensor is dominated by resistance change rather than capacitance variations. The sensor transfer function allows to conclude that the Mo2CTx chemiresistance is mainly originating from electron transport through interflake potential barriers with heights up to 0.2 eV. Density functional theory calculations, elucidating the Mo2C surface interaction with organic analytes and H2O, explain the experimental data as an energy shift of the density of states under the analyte's adsorption which induces increasing electrical resistance.
Chirality Bias Tissue Homeostasis by Manipulating Immunological Response
Authors: Jiang Shengjie , Zeng Qiang , Zhao Kai , Liu Jinying , Sun Qiannan , Huang Kang , He Ying , Zhang Xuehui , Wang Hui , Shi Xinghua , Feng Chuanliang , Deng Xuliang , Wei Yan 
Published: October 2021

AbstractThe physiological chirality of extracellular environments is substantially affected by pathological diseases. However, how this stereochemical variation drives host immunity remains poorly understood. Here, it is reported that pathology‐mimetic M‐nanofibrils—but not physiology‐mimetic P‐nanofibrils—act as a defense mechanism that helps to restore tissue homeostasis by manipulating immunological response. Quantitative multi‐omics in vivo and in vitro shows that M‐nanofibrils significantly inhibit inflammation and promote tissue regeneration by upregulating M2 macrophage polarization and downstream immune signaling compared with P‐nanofibrils. Molecular analysis and theoretical simulation demonstrate that M‐chirality displays higher stereo‐affinity to cellular binding, which induces higher cellular contractile stress and activates mechanosensitive ion channel PIEZOl to conduct Ca2+ influx. In turn, the nuclear transfer of STAT is biased by Ca2+ influx to promote M2 polarization. These findings underscore the structural mechanisms of disease, providing design basis for immunotherapy with bionic functional materials.
Quantifying Anionic Diffusion in 2D Halide Perovskite Lateral Heterostructures
Authors: Akriti  , Zhang Shuchen , Lin Zih‐Yu , Shi Enzheng , Finkenauer Blake P. , Gao Yao , Pistone Alan J. , Ma Ke , Savoie Brett M. , Dou Letian 
Published: October 2021

AbstractAnionic diffusion strongly impacts the stability of halide perovskite materials, but it is still not well understood. Here, a quantitative investigation of in‐plane thermally driven anionic inter‐diffusion in a series of novel 2D and quasi‐2D halide perovskites lateral heterostructures is reported. The calculated diffusion coefficients (D) reveal the inhibition of Br–I inter‐diffusion with bulky π‐conjugated organic cations compared with short‐chain aliphatic organic cations. Furthermore, halide diffusion is found to be faster in quasi‐2D (n > 1) than 2D perovskites (n = 1). The increment becomes less apparent as the “n” number increases, akin to the quantum confinement effect observed for band gaps. These trends are rationalized by molecular dynamics simulations of free energy barriers for halide diffusion that reveal mechanisms for suppressing diffusion. This work provides important fundamental insights on the anionic migration and diffusion process in halide perovskite materials.
Suppressing High‐Current‐Induced Phase Separation in Ni‐Rich Layered Oxides by Electrochemically Manipulating Dynamic Lithium Distribution
Authors: Hyun Hyejeong , Jeong Kyeongjae , Hong Hyukhun , Seo Sungjae , Koo Bonho , Lee Danwon , Choi Subin , Jo Sugeun , Jung Keeyoung , Cho Hoon‐Hwe , Han Heung Nam , Shin Tae Joo , Lim Jongwoo 
Published: October 2021

AbstractUnderstanding the cycling rate‐dependent kinetics is crucial for managing the performance of batteries in high‐power applications. Although high cycling rates may induce reaction heterogeneity and affect battery lifetime and capacity utilization, such phase transformation dynamics are poorly understood and uncontrollable. In this study, synchrotron‐based operando X‐ray diffraction is performed to monitor the high‐current‐induced phase transformation kinetics of LiNi0.6Co0.2Mn0.2O2. The sluggish Li diffusion at high Li content induces different phase transformations during charging and discharging, with strong phase separation and homogeneous phase transformation during charging and discharging, respectively. Moreover, by exploiting the dependence of Li diffusivity on the Li content and electrochemically tuning the initial Li content and distribution, phase separation pathway can be redirected to solid solution kinetics at a high charging rate of 7 C. Finite element analysis further elucidates the effect of the Li‐content‐dependent diffusion kinetics on the phase transformation pathway. The findings suggest a new direction for optimizing fast‐cycling protocols based on the intrinsic properties of the materials.
Dynamic Nanoconfinement Enabled Highly Stretchable and Supratough Polymeric Materials with Desirable Healability and Biocompatibility
Authors: Liu Lei , Zhu Menghe , Xu Xiaodong , Li Xin , Ma Zhewen , Jiang Zhen , Pich Andrij , Wang Hao , Song Pingan 
Published: October 2021

AbstractLightweight polymeric materials are highly attractive platforms for many potential industrial applications in aerospace, soft robots, and biological engineering fields. For these real‐world applications, it is vital for them to exhibit a desirable combination of great toughness, large ductility, and high strength together with desired healability and biocompatibility. However, existing material design strategies usually fail to achieve such a performance portfolio owing to their different and even mutually exclusive governing mechanisms. To overcome these hurdles, herein, for the first time a dynamic hydrogen‐bonded nanoconfinement concept is proposed, and the design of highly stretchable and supratough biocompatible poly(vinyl alcohol) (PVA) with well‐dispersed dynamic nanoconfinement phases induced by hydrogen‐bond (H‐bond) crosslinking is demonstrated. Because of H‐bond crosslinking and dynamic nanoconfinement, the as‐prepared PVA nanocomposite film exhibits a world‐record toughness of 425 ± 31 MJ m−3 in combination with a tensile strength of 98 MPa and a large break strain of 550%, representing the best of its kind and even outperforming most natural and artificial materials. In addition, the final polymer exhibits a good self‐healing ability and biocompatibility. This work affords new opportunities for creating mechanically robust, healable, and biocompatible polymeric materials, which hold great promise for applications, such as soft robots and artificial ligaments.
Functionalized Iron–Nitrogen–Carbon Electrocatalyst Provides a Reversible Electron Transfer Platform for Efficient Uranium Extraction from Seawater
Authors: Yang Hui , Liu Xiaolu , Hao Mengjie , Xie Yinghui , Wang Xiangke , Tian He , Waterhouse Geoffrey I. N. , Kruger Paul E. , Telfer Shane G. , Ma Shengqian 
Published: October 2021

AbstractUranium extraction from seawater provides an opportunity for sustainable fuel supply to nuclear power plants. Herein, an adsorption–electrocatalysis strategy is demonstrated for efficient uranium extraction from seawater using a functionalized iron–nitrogen–carbon (Fe–Nx–C–R) catalyst, comprising N‐doped carbon capsules supporting FeNx single‐atom sites and surface chelating amidoxime groups (R). The amidoxime groups bring hydrophilicity to the adsorbent and offer surface‐specific binding sites for UO22+ capture. The site‐isolated FeNx centres reduce adsorbed UO22+ to UO2+. Subsequently, through electrochemical reduction of the FeNx sites, unstable U(V) ions are reoxidized to U(VI) in the presence of Na+ resulting in the generation of solid Na2O(UO3·H2O)x, which can easily be collected. Fe–Nx–C–R reduced the uranium concentration in seawater from ≈3.5 ppb to below 0.5 ppb with a calculated capacity of ≈1.2 mg g‐1 within 24 h. To the best of the knowledge, the developed system is the first to use the adsorption of uranyl ions and electrodeposition of solid Na2O(UO3.H2O)x for the extraction of uranium from seawater. The important discoveries guide technology development for the efficient extraction of uranium from seawater.
Anisotropic Printed Resistor with Linear Sensitivity Based on Nano–Microfiller‐Filled Polymer Composite
Authors: Huang Pei , Cao Yingze , Wei Yawen , Cheng Xiang , Liu Junfeng , Zhang Shanshan , Wang Pengfei , Chen Shaosong , Xia Zhidong 
Published: October 2021

Abstract3D printing electronics provides great potential to build structural objects with multiple functionalities, with the assistance of shape design and the shear force on the filler orientation. In the study, nano–microanisotropic sensors with oriented fillers assure its linear sensitive properties, where the sensors are 3D‐printed based upon the carbon fiber (CF)‐ and multiwalled carbon nanotube (MCNT)‐filled polydimethylsiloxane (PDMS). The synergistic effect of CF and MCNT modifies the printability, mechanical properties, and sensitivity of printed sensors. The introduction of anticatalyst and catalyst guarantee the printable mixtures with a stable printability in a long term (>15 days). Assisted by the shear flow, the fillers own the orientation ration of 78.53%, which further contribute to the linear sensing behaviors under the tensile strain of 0–20% and compressive stress of 0–20 kPa. Frequency‐domain signals and visual demonstration on the cyclic stretch test reveal that the double peak is originated from the hysteresis of the strain to applied stress. Anisotropic electromechanical behaviors of the resistors will inspire to quantitatively analyze multidimensional strains in practical applications. The fingerprint inspired resistors with multiple sensing signals further demonstrate the convenience of the printing process on the design of wearable electronics.
Electrospun polylactic acid/sulfadiazine sodium/proteinase nanofibers and their applications in treating frostbite
Authors: Ding Chengbiao , Zhou Chenxu , Fan Yueyao , Liu Qi , Zhang Haifeng , Wu Zhengwei 
Published: October 2021

AbstractIn this study, polylactic acid (PLA)/sulfadiazine sodium/proteinase K composite nanofibers were prepared by electrospinning, and their morphology was observed by scanning electron microscope. The novel nanofibers were characterized by Fourier transform infrared spectroscopy and drug release curve. The activity of different groups of drugs loaded nanofibers in frostbite wound of rats was studied and compared with the blank control group. Hematoxylin–eosin staining and transmission electron microscope were used to access the histological changes of frostbite wounds on the back of rats before and after treatment. CD31 fluorescence staining was used to track the reconstruction and improvement of blood vessels in tissues. The results revealed that the drug release rate of PLA/sulfadiazine sodium/proteinase K nanofibers group was more than 50% at 1 h, and the cumulative drug release rate was more than 88% at 168 h, and CD31 fluorescence showed that its vascular density was 13.27% ± 0.9%, which was significantly higher than that of other groups. Therefore, PLA/sulfadiazine sodium/proteinase K composite nanofibers could promote the healing of frostbite wounds, which indicated the increase of capillaries and the regeneration of hair follicles. PLA/sulfadiazine sodium/proteinase K composite nanofibers have great potential in the application of frostbite.
Rheological approach to the adhesion property of metal‐plated acrylonitrile‐butadiene‐styrene to secure the driver's safety
Authors: Seo Jae Sik , Shin So Young 
Published: October 2021

AbstractElectroplating on acrylonitrile‐butadiene‐styrene (ABS) is a widely used decorative technique for achieving low cost and light weight. However, the lack of adhesion strength can be a threat to the passenger's safety in an emergency situation. Herein the morphology formation of injection molded ABS and the resultant adhesion behavior was investigated from the perspective of rheological analysis. The polybutadiene (PBD) rubbers and styrene‐co‐acrylonitrile (SAN) generated a strong internal structure, which became more strengthened at the low shear level of 0.1 rad/s. As shear rate increased, the deformation of PBD was dominant over the shear level of 10 rad/s. Injection molded specimen and door handle showed extremely oriented ellipsoidal morphology at the gate and squashed structure at the parting line. The etched surface morphology directly influenced the physically interlocked structure, and the deformed surface exhibited negative effect on the adhesion property. 8.11 N/cm of peel‐off strength of electroplated ABS at the injection rate of 10 mm/s decreased to 4.27 N/cm at the injection rate of 50 mm/s. The decrease in peel‐off strength was more noticeable at near gate than center region of the specimen.
Biogeography, ecology, and conservation of mayfly communities of relict mountain streams, north‐eastern Algeria
Authors: Samraoui Boudjéma , Márquez‐Rodríguez Joaquín , Ferreras‐Romero Manuel , El‐Serehy Hamed A. , Samraoui Farrah , Sartori Michel , Gattolliat Jean‐Luc 
Published: October 2021

Abstract

Data on Maghrebian mayfly communities are scarce and fragmentary, but evidence of alterations of the North African riverine landscape depleting the freshwater biota is rapidly mounting.
In contrast to the overexploited lowlands, the highlands of north‐eastern Algeria are hotspots of freshwater biodiversity and the last refugia to micro‐endemics, North African endemics, and Eurosiberian relicts.
The mayflies of relict mountain streams of north‐eastern Algeria were investigated and 20 species or taxa in five families were recorded. Two species of the genus Habrophlebia and one species of Centroptilum are new to science, whereas two Rhithrogena species are new to Algeria, including the Numidian endemic Rhithrogena sartorii.
Co‐inertia analysis suggested a highly significant co‐structure between mayfly assemblages and habitats defined by altitude, flow velocity, bed width, water depth, and water conductivity. In addition, a Poisson generalized linear model indicated a strong positive relationship between species richness and water depth and a weaker negative one with bed width (stream size). The results are congruent with the hypothesis that habitat provides the templet that drives mayfly communities, and they support the use of mayflies as bioindicators in the implementation of monitoring schemes to assess the ecological integrity of Maghrebian freshwater biodiversity hotspots.
The upstream part of the Kebir‐East river basin is subjected to forest fires, pollution, and flow alteration, whereas the downstream part, which includes the vast Mekhada marsh, is increasingly fragmented and invaded by alien fish species. Conservation efforts focusing on the management of Oued Kebir‐East, a transboundary Maghrebian river, and the restoration of the Mekhada marsh, a Ramsar site, need to be launched during the United Nations Decade on Ecosystem Restoration (2021–2030).
Bismuth Nanoparticles Anchored on Ti3C2Tx MXene Nanosheets for High‐Performance Sodium‐Ion Batteries
Authors: Ma Hao , Li Jiabao , Yang Jian , Wang Na , Liu Zhigang , Wang Tianyi , Su Dawei , Wang Chengyin , Wang Guoxiu 
Published: October 2021

AbstractSodium‐ion batteries are promising energy‐storage systems, but they are facing huge challenges for developing fast‐charging anode materials. Bismuth (Bi)‐based anode materials are considered as candidates for fast‐charging anodes of sodium‐ion batteries due to their excellent rate performance. Herein, we designed a two‐dimensional Bi/MXene anode material based on a hydrogen thermal reduction strategy. Benefitting from microstructure advantages, Bi/MXene anodes exhibited an excellent rate capability and superior cycle performance in Na//Bi/MXene half‐batteries and Na3V2(PO4)3/C//Bi/MXene full‐batteries. Moreover, full‐batteries can complete a charge/discharge cycle in 7 min and maintain an excellent cycle life (over 7000 cycles). The electrochemical test results showed that Bi/MXene is a promising anode material with fast charge/discharge capability for sodium‐ion batteries.
Amplified Peroxidase‐like Activity of Co2+ Using 8‐Hydroxyquinoline and Its Application for Ultrasensitive Colorimetric Detection of Clioquinol
Authors: Xu Lijun , Sai Jialin , Xue Dongguo , Zhou Lu , Pei Renjun , Liu Aihua 
Published: October 2021

Abstract8‐Hydroxyquinoline (8HQ) and its derivatives display diverse bioactivities and therapeutic potentials. In this study, we unveiled that 8HQ can boost the peroxidase‐like activity of Co2+ in the presence of bicarbonate (HCO3−) in neutral pH at room temperature. With 2,2′‐azino‐bis‐(3‐ethylbenzothiazoline‐6‐sulphonate) (ABTS) as the substrate, the formed Co2+/8HQ/HCO3− complex shows robust catalytic activity with the turnover number (kcat) tens to hundreds of times higher than that of Co3O4 and other Co2+ complexes in terms of per cobalt ion. This system was used to design colorimetric sensors for ultrasensitive detection of 8HQ‐based drugs by activating the activity of Co2+. Take detecting clioquinol as an example, a detection limit of 2.4 nM clioquinol with a linear range from 0.01 to 0.2 μM was obtained. This work not only revealed a new kind of ligand that activated the activity of Co2+, but also provided a facile, low‐cost, ultrasensitive, easy‐to‐use, and universal strategy for sensing various 8HQ‐based drugs. Further development of this catalytic system might be beneficial to overcome drug resistance by combined medication.
A Mitochondria‐targeted AIEgen Labelled with18F for Breast Cancer Cell Imaging and Therapy
Authors: Yu Kaiwu , Zhou Rui , Xu Yangyang , Zhong Yan , Qian Shufang , Zhang Honghai , Shi Haibin , He Qinggang , Mao Zhengwei , Zhang Haoke , Wei Yen , Zhang Hong , Tian Mei 
Published: October 2021

AbstractA lack of efficient diagnostic tools for early and noninvasive diagnosis of breast cancer has restricted the clinical treatment effect. This problem might be addressed by the combination of aggregation‐induced emission (AIE) fluorescence imaging and positron emission tomography (PET) with the dual advantages of high resolution and easy operation, and unlimited penetration and high sensitivity. Here, a mitochondria‐targeted AIE luminogen (AIEgen) radiolabeled with18F was developed through a two‐step radiochemical reaction by virtue of a prosthetic group. The obtained18/19F‐Bz‐CP imaging probe was examined by in vitro cell uptake and cell proliferation inhibition in two breast cancer cell lines, showing that the probe can efficiently target and locate in the mitochondria through the analysis of fluorescence imaging and PET simultaneously. Additionally, the probe can induce cancer cell apoptosis with the half maximal inhibitory concentration (IC50) of 4.8 μM for MCF‐7 cells and 7.2 μM for T47D cells, indicating its potential application for breast cancer therapy.
Layer‐by‐Layer Assembly of Monolayer Films Precisely Controlled by LB Technology to Realize Low‐Energy Consumption and High‐Stability Ternary Data‐Storage Devices
Authors: Wang Yuxiang , Li Hua , Cao Huan , Zhang Qijian , Wang Guan , Yuan Junwei , Lu Jianmei 
Published: October 2021

AbstractOrganic semiconductor devices with low energy consumption and excellent stability are highly desirable. Controlling the intermolecular alignment orientation by designing the molecular structure or optimization of the film preparation process is an alternative way to achieve this goal. In this paper, a new idea was proposed to realize the formation of an aligned monomolecular layer and multimolecular layer thin films on the electrode substrate by controlling the surface pressure of molecular layer on the liquid surface by LB technology. An amphiphilic π‐conjugated D−A molecule was synthesized, and the influence of spin coating and LB technology on intermolecular ordered stacking in the film and the electrical memory performance were investigated. The results demonstrated that the film fabricated by LB technology has some advantages compared with that fabricated by spin‐coating method, such as higher crystallinity, lower surface roughness and better‐organized monomolecular and multimolecular layer, which significantly promoted the performance of the electrical memory device with lower power consumption and longer stability.
Reliability of self‐report versus the capacity to consent to treatment instrument to make medical decisions in brain metastasis and other metastatic cancers
Authors: Fowler Mackenzie E. , Marotta Dario A. , Kennedy Richard E. , Gerstenecker Adam , Gammon Meredith , Triebel Kristen 
Published: October 2021

AbstractObjectiveTo evaluate the ability of persons with metastatic cancer to self‐assess their medical decision‐making capacity (MDC). To investigate this, we compared an objective measure of MDC with self‐ratings and evaluated predictors of agreement.MethodsData were obtained from a cross‐sectional study of metastatic cancer patients at a large academic medical center. Across all standards of MDC, sensitivity, specificity, and reliability using Gwet's AC1 statistic were calculated using the objective measure as the gold standard. Logistic regression was used to evaluate predictors of agreement between the measures across all MDC standards.ResultsIn those with brain metastases, high sensitivity (greater than 0.7), but low specificity was observed for all standards. Poor reliability was observed across all standards. Higher age resulted in higher odds of disagreement for Standard 3 (appreciation) (OR: 1.07, 95% CI: 1.00, 1.15) and Standard 4 (reasoning) (OR: 1.05, 95% CI: 1.00, 1.10). For Standard 3, chemotherapy use and brain metastases compared to other metastases resulted in higher odds of disagreement (Chemotherapy: OR: 5.62, 95% CI: 1.37, 23.09, Brain Metastases: OR: 5.93, 95% CI: 1.28, 27.55). For Standard 5 (understanding), no predictors were associated with disagreement.ConclusionsFor less cognitively complex standards (e.g., appreciation), self‐report may be more valid and reliable than more cognitively complex standards (e.g., reasoning or understanding). However, overall, MDC self‐report in the current sample is suboptimal. Thus, the need for detailed assessment of MDC, especially when patients are older or used chemotherapy, is indicated. Other studies should be conducted to assess MDC agreement longitudinally.