bluuebunny/crossref_metadata_2025_split huggingface dataset:
Alluaudite Na2Fe2(SO4)3 and NASICON‐Type Na4Fe3(PO4)2(P2O7) as Promising Cathode Materials in Sodium‐Ion Batteries
Authors: Xiao Xiang , Lan Yuanqi , Tan Li , Xu Huan , Yao Wenjiao , Tang Yongbing 
Published: August 2024

AbstractSodium‐ion batteries (SIBs) are expected to be widely used in low‐speed vehicles and distributed energy storage devices due to their merits of abundance in natural resources, wide distribution, and low toxicity of raw materials. However, the performance of the state‐of‐the‐art SIBs is restricted by the lack of ideal cathode materials. Iron‐based polyanionic compounds have attracted much attention as potential SIBs cathode due to their low cost, excellent cycling stability, safety, and environmental friendliness, among which Na2Fe2(SO4)3 and Na4Fe3(PO4)2(P2O7) are the most commercializable representatives. Nevertheless, both academic and industrial communities hold a wait‐and‐see attitude. Herein, each of the aspects of crystal structure, synthesis methods, and electrochemical properties are first introduced. Then, the optimized schemes to improve electrochemistry, hygroscopicity, and conductivity for both are summarized. Finally, according to the current practical demand for iron‐based polyanionic compounds, their application prospects and the corresponding bottleneck issues are comprehensively analyzed.
Light‐Controlled Electric Stimulation with Organic Electrolytic Photocapacitors Achieves Complex Neuronal Network Activation: Semi‐Chronic Study in Cortical Cell Culture and Rat Model
Authors: Nowakowska Marta , Jakešová Marie , Schmidt Tony , Opančar Aleksandar , Polz Mathias , Reimer Robert , Fuchs Julia , Patz Silke , Ziesel Daniel , Scheruebel Susanne , Kornmueller Karin , Rienmüller Theresa , Đerek Vedran , Głowacki Eric D. , Schindl Rainer , Üçal Muammer 
Published: August 2024

AbstractNeurostimulation employing photoactive organic semiconductors offers an appealing alternative to conventional techniques, enabling targeted action and wireless control through light. In this study, organic electrolytic photocapacitors (OEPC) are employed to investigate the effects of light‐controlled electric stimulation on neuronal networks in vitro and in vivo. The interactions between the devices and biological systems are characterized. Stimulation of primary rat cortical neurons results in an elevated expression of c‐Fos within a mature neuronal network. OEPC implantation for three weeks and subsequent stimulation of the somatosensory cortex leads to an increase of c‐Fos in neurons at the stimulation site and in connected brain regions (entorhinal cortex, hippocampus), both in the ipsi‐ and contralateral hemispheres. Reactivity of glial and immune cells after semi‐chronic implantation of OEPC in the rat brain is comparable to that of surgical controls, indicating minimal foreign body response. Device functionality is further substantiated through retained charging dynamics following explantation. OEPC‐based, light‐controlled electric stimulation has a significant impact on neural responsiveness. The absence of detrimental effects on both the brain and device encourages further use of OEPC as cortical implants. These findings highlight its potential as a novel mode of neurostimulation and instigate further exploration into applications in fundamental neuroscience.
Magneto‐Enzymatic Microgels for Precise Hydrogel Sculpturing
Authors: Mendes Maria C. , Pereira João A. , Silva Ana S. , Mano João F. 
Published: August 2024

AbstractThe inclusion of hollow channels in tissue‐engineered hydrogels is crucial for mimicking the natural physiological conditions and facilitating the delivery of nutrients and oxygen to cells. Although bio‐fabrication techniques provide diverse strategies to create these channels, many require sophisticated equipment and time‐consuming protocols. Herein, collagenase, a degrading agent for methacrylated gelatin hydrogels, and magnetic nanoparticles (MNPs) are combined and processed into enzymatically active spherical structures using a straightforward oil bath emulsion methodology. The generated microgels are then used to microfabricate channels within biomimetic hydrogels via a novel sculpturing approach that relied on the precise coupling of protein‐enzyme pairs (for controlled local degradation) and magnetic actuation (for directional control). Results show that the sculpting velocity can be tailored by adjusting the magnetic field intensity or concentration of MNPs within the microgels. Additionally, varying the magnetic field position or microgel size generated diverse trajectories and channels of different widths. This innovative technology improves the viability of encapsulated cells through enhanced medium transport, outperforming non‐sculpted hydrogels and offering new perspectives for hydrogel vascularization and drug/biomolecule administration. Ultimately, this novel concept can help design fully controlled channels in hydrogels or soft materials, even those with complex tortuosity, in a single wireless top‐down biocompatible step.
Human Circulatory/Respiratory‐Inspired Comprehensive Air Purification System
Authors: Jeong Seongmin , Shin Jaeho , Kim Jinmo , Kim Hongchan , Lee Jae Gun , Min JinKi , Hong Sukjoon , Ko Seung Hwan 
Published: August 2024

AbstractThe circulatory and respiratory systems in humans are marvels of biological engineering that exhibit competence in maintaining homeostasis. These systems not only shield the organism from external contaminants but also orchestrate the vital gases via the bloodstream to sustain cellular respiration and metabolic processes across diverse tissues. It is noticed that spaces inhabited encounter challenges akin to those of the human body: protecting the indoor air from external pollutants while removing anthropogenic byproducts like carbon dioxide (CO2), particulate matters (PM), and volatile organic compounds (VOCs) tooutside. A biomimetic approach, composed of a microbubble‐based gas exchanger and circulating liquid inspired by alveoli, capillary beds, and bloodstream of the human circulatory/respiratory system, offer an innovative solution for comprehensive air purification of hermetic spaces. Circulatory/respiratory‐inspired air purification system (CAPS) ensure both continuous removal of PM and exchange of gas species between indoor and outdoor environments to maintain homeostasis. The effectiveness of this system is also supported by animal behavior experiments with and without CAPS, showing an effect of reducing CO2 concentration by 30% and increasing mice locomotor activity by 53%. CAPS is expected to evolve into robust and comprehensive air purification schemes through the networked integration of plural internal and external environments.
High‐Efficiency Inverted Perovskite Solar Cells via In Situ Passivation Directed Crystallization
Authors: Huang Yanchun , Yan Kangrong , Wang Xinjiang , Li Biao , Niu Benfang , Yan Minxing , Shen Ziqiu , Zhou Kun , Fang Yanjun , Yu Xuegong , Chen Hongzheng , Zhang Lijun , Li Chang‐Zhi 
Published: August 2024

AbstractLead halide perovskite solar cells (PSCs) have emerged as one of the influential photovoltaic technologies with promising cost‐effectiveness. Though with mild processabilities to massive production, inverted PSCs have long suffered from inferior photovoltaic performances due to intractable defective states at boundaries and interfaces. Herein, an in situ passivation (ISP) method is presented to effectively adjust crystal growth kinetics and obtain the well‐orientated perovskite films with the passivated boundaries and interfaces, successfully enabled the new access of high‐performance inverted PSCs. The study unravels that the strong yet anisotropic ISP additive adsorption between different facets and the accompanied additive engineering yield the high‐quality (111)‐orientated perovskite crystallites with superior photovoltaic properties. The ISP‐derived inverted perovskite solar cells (PSCs) have achieved remarkable power conversion efficiencies (PCEs) of 26.7% (certified as 26.09% at a 5.97 mm2 active area) and 24.5% (certified as 23.53% at a 1.28 cm2 active area), along with decent operational stabilities.
Plasmon‐Enhanced Circular Polarization High‐Harmonic Generation from Silicon
Authors: Ren Sheng , Chen Danni , Wang Shiqi , Chen Yongqiang , Hu Rui , Qu Junle , Liu Liwei 
Published: August 2024

AbstractHigh harmonics of circular polarization can be directly generated by monochromatic circularly polarized incident light owing to the high density and stable structure of crystal media. If the arrangement of multiple coplanar atoms in the unit structure of the crystal exhibits rotational symmetry, the polarization state of the high harmonics generated from the crystal follows specific selection rules that have been observed in the 2D crystal medium. In addition, the geometric symmetry of the coplanar atom distribution is related to the orientation of cubic crystals. This implies that only the polarization along a specific crystal orientation can achieve a selection of high‐harmonic polarization states. However, this is a very weak process in cubic crystals owing to the attenuation of crystal anisotropy to circularly polarized light and the dependence of the electron transition rate on the crystal orientation. In this study, plasmonic nanoantennas are designed on silicon crystal films to enhance this process. The harmonic emission is more than ten times brighter than that without nanoantennas and conformed to the selection rules for high harmonics. The research results offer a new approach for deep­ultraviolet space filtering, carrier control, and the development of compact extreme­ultraviolet light sources.
Filterless Near‐Infrared Narrowband Photodetectors Based on Mixed Metal Perovskite Single Crystals
Authors: Liu Jia , Chen Yifu , Zhou Jixuan , Wang Jinxiang , Chen Zhihui , Zhang Lin , Zhou Yu , Ouyang Fangping , Li Hongjian , Xiao Zhengguo , Yang Bin , Yuan Yongbo , He Jun , Lin Yun 
Published: August 2024

AbstractIodine‐based Sn‐Pb mixed perovskite single crystals (SCs) are promising candidates for near‐infrared (NIR) narrowband photodetectors due to their low bandgaps. However, they are highly defective when grown in ambient air due to the extremely poor air stability of Sn2+ ions in precursor solutions. It is discovered that the oxidation of Sn2+ to Sn4+ ions not only consumes Sn2+ ions but also increases the precursor solution viscosity. The increased viscosity slows down the solute diffusion and hinders the anisotropic growth of SCs, leading to Sn‐Pb perovskite SCs with curved convex surfaces and unevenly distributed composition. By preventing the solute‐diffusion‐limited growth mode with hypophosphorous acid (H3PO2), high‐quality Sn‐Pb perovskite SCs can be robustly grown in ambient air with low trap density of 6.58 × 109 cm−3 and high carrier mobility‐lifetime product (µτ) of 1.5 × 10−3 cm2 V−1. Accordingly, a series of filterless NIR narrowband photodetectors with gradually tuned detection centers and dual detection modes has been achieved, delivering a maximum external quantum efficiency of 15.2% and detectivity of 1.19 × 1010 Jones.
β,β‐Disubstituted Alkan‐2‐ones from Propargylic Alcohols Combining a Meyer‐Schuster Rearrangement and Asymmetric Alkene Bioreduction
Authors: Escot Lorena , González‐Granda Sergio , Méndez‐Sánchez Daniel , Wang Yu , Hailes Helen C. , Lavandera Iván , Gotor‐Fernández Vicente 
Published: August 2024

AbstractThe combination of a gold(I) N‐heterocyclic carbene complex and an ene‐reductase (ERED) has made possible the synthesis of enantiopure β,β‐disubstituted ketones in a one‐pot concurrent approach. The protocol consists of the Meyer‐Schuster rearrangement of racemic propargylic tertiary alcohols using [1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene]‐[bis(trifluoromethanesulfonyl)‐imide]gold(I) (IPrAuNTf2), followed by an asymmetric alkene reduction of the α,β‐unsaturated ketone intermediate using the Zymomonas mobilis ERED (NCR‐ERED). The chemoenzymatic cascade was optimised with a model substrate, where E/Z‐isomers both generated the (R)‐ketone, which was rationalised using in silico molecular docking experiments. The cascade was then applied towards the production of a series of (R)‐4‐substituted‐alkan‐2‐ones in enantiopure form in a straightforward manner.
Enhanced Capacitive Deionization of Hollow Mesoporous Carbon Spheres/MOFs Derived Nanocomposites by Interface‐Coating and Space‐Encapsulating Design
Authors: Tang Yijian , Shi Yuxin , Su Yichun , Cao Shuai , Hu Jinliang , Zhou Huijie , Sun Yangyang , Liu Zheng , Zhang Songtao , Xue Huaiguo , Pang Huan 
Published: August 2024

AbstractExploring new carbon‐based electrode materials is quite necessary for enhancing capacitive deionization (CDI). Here, hollow mesoporous carbon spheres (HMCSs)/metal‐organic frameworks (MOFs) derived carbon materials (NC(M)/HMCSs and NC(M)@HMCSs) are successfully prepared by interface‐coating and space‐encapsulating design, respectively. The obtained NC(M)/HMCSs and NC(M)@HMCSs possess a hierarchical hollow nanoarchitecture with abundant nitrogen doping, high specific surface area, and abundant meso‐/microporous pores. These merits are conducive to rapid ion diffusion and charge transfer during the adsorption process. Compared to NC(M)/HMCSs, NC(M)@HMCSs exhibit superior electrochemical performance due to their better utilization of the internal space of hollow carbon, forming an interconnected 3D framework. In addition, the introduction of Ni ions is more conducive to the synergistic effect between ZIF(M)‐derived carbon and N‐doped carbon shell compared with other ions (Mn, Co, Cu ions). The resultant Ni‐1‐800‐based CDI device exhibits excellent salt adsorption capacity (SAC, 37.82 mg g−1) and good recyclability. This will provide a new direction for the MOF nanoparticle‐driven assembly strategy and the application of hierarchical hollow carbon nanoarchitecture to CDI.
Consumption patterns of fresh and frozen chicken: A Ghanaian food policy perspective
Authors: Tsiboe Francis , Appiah‐Twumasi Mark , Xia Tian , Amanor‐Boadu Vincent 
Published: August 2024

AbstractDespite the global increase in poultry consumption, there are different preferences for chicken products in different countries. In Ghana, two main categories dominate the market: live/fresh whole chickens and imported frozen chicken parts. This study leverages data from 13,201 households to explore Ghanaian demand dynamics for these products using the Quadratic Almost Ideal Demand System. Findings reveal stark differences between the two. Live/fresh whole chickens, considered luxury goods, display a complex interplay with other non‐chicken meat products, cultural festivities, and various sociodemographic factors. Meanwhile, frozen chicken parts, seen as necessities, exhibit different demand shifters and peak consumption periods. Importantly, these two categories emerge as distinct products, signaling to policymakers the need for differentiated strategies. Simulated policy scenarios further emphasize that reducing prices of live/fresh chickens significantly boosts domestic chicken demand more than policies raising prices of frozen parts. However, the broader implications on alternative protein sources differ between the two policy types. We urge policymakers to adopt an integrated approach, considering these nuances, to strengthen Ghana's domestic poultry sector without unintended market disruptions. [EconLit citations: Q11, Q13, Q17, Q18, D12].
Acoustic recognition of predators by mantled howler monkeys (Alouatta palliata): A playback experiment with naïve and experienced subjects
Authors: Sánchez‐Vidal Rafael Omar , Rangel‐Negrín Ariadna , Briseño‐Jaramillo Margarita , Sosa‐López J. Roberto , Dias Pedro A. D. 
Published: August 2024

AbstractObjectivesWhen the production of antipredator behaviors is costly, prey is expected to stop displaying such behaviors and lose the ability to recognize extirpated predators. However, the loss or maintenance of predator recognition abilities is conditional on the eco‐evolutionary context of prey. Here, we examined the behavioral responses of naïve and experienced mantled howler monkeys (Alouatta palliata) to simulated acoustic cues from natural predators.MethodsWe studied experienced individuals in the Uxpanapa Valley and naïve individuals in Los Tuxtlas (Veracruz, México). Jaguars (Panthera onca) and harpy eagles (Harpia harpyja), the main predators of howler monkeys, are extant in the Uxpanapa Valley but have been extirpated in Los Tuxtlas for approximately 70 and 45 years, respectively. We exposed six naïve and six experienced groups to playbacks of acoustic stimuli from the two predators and a non‐predator control species (plain chachalacas, Ortalis vetula), and recorded the latency, frequency, and duration of antipredation behaviors (n = 127 trials).ResultsIn contrast with experienced mantled howler monkeys, naïve subjects did not respond to trials from harpy eagles. However, response patterns were generally similar between naïve and experienced individuals when exposed to jaguar stimuli.DiscussionOur findings suggest that naïve mantled howler monkeys do not recognize harpy eagle calls, but they respond to jaguar calls in a manner consistent with experienced individuals. These results illustrate how different mechanisms for the recognition of extirpated predators operate within a single species according to evolutionary and ecological experience.
Contributions of the ADNI Biostatistics Core
Authors: Beckett Laurel A. , Saito Naomi , Donohue Michael C. , Harvey Danielle J. ,   for the Alzheimer's Disease Neuroimaging Initiative
Published: August 2024

AbstractThe goal of the Biostatistics Core of the Alzheimer's Disease Neuroimaging Initiative (ADNI) has been to ensure that sound study designs and statistical methods are used to meet the overall goals of ADNI. We have supported the creation of a well‐validated and well‐curated longitudinal database of clinical and biomarker information on ADNI participants and helped to make this accessible and usable for researchers. We have developed a statistical methodology for characterizing the trajectories of clinical and biomarker change for ADNI participants across the spectrum from cognitively normal to dementia, including multivariate patterns and evidence for heterogeneity in cognitive aging. We have applied these methods and adapted them to improve clinical trial design. ADNI‐4 will offer us a chance to help extend these efforts to a more diverse cohort with an even richer panel of biomarker data to support better knowledge of and treatment for Alzheimer's disease and related dementias.HighlightsThe Alzheimer's Disease Neuroimaging Initiative (ADNI) Biostatistics Core provides study design and analytic support to ADNI investigators.Core members develop and apply novel statistical methodology to work with ADNI data and support clinical trial design.The Core contributes to the standardization, validation, and harmonization of biomarker data.The Core serves as a resource to the wider research community to address questions related to the data and study as a whole.
General and Modular Synthesis of Covalent Organic Cages for Efficient Molecular Recognition
Authors: Zhao Xiang , Cui Haoyu , Guo Lingling , Li Bin , Li Jian , Jia Xueshun , Li Chunju 
Published: August 2024

AbstractCage‐type structures based on coordination and dynamic covalent chemistry have the characteristics of facile and efficient preparation but poor stability. Chemically stable organic cages, generally involving fragment coupling and multi‐step reactions, are relatively difficult to synthesize. Herein, we offer a general and modular strategy to customize covalent organic cages with diverse skeletons and sizes. First, one skeleton (S) module with three extension (E) modules and three reaction (R) modules are connected by one‐ or two‐step coupling to get the triangular monomer bearing three reaction sites. Then one‐pot Friedel‐Crafts condensation of the monomer and linking module of paraformaldehyde produces the designed organic cages. The cage forming could be regulated by the geometrical configuration of monomeric blocks. The S−E−R angles in the monomer is crucial; only 120° (2,4‐dimethoxyphen as reaction module) or 60° (2,5‐dimethoxyphen as reaction module) angle between S−E−R successfully affords the resulting cages. By the rational design of the three modules, a series of organic cages have been constructed. In addition, the host‐guest properties show that the representative cages could strongly encapsulate neutral aromatic diimide guests driven by solvophobic interactions in polar solvents, giving the highest association constant of (2.58±0.18)×105 M−1.
Evaluating the impact of sodium chloride and iron carbonate ions on gas hydrate formation in Monoethylene Glycol‐enhanced aqueous solutions
Authors: Bloomfield Carys M. , Phan Chi M. , Mohammed Malik M. , Helal Ammar Al 
Published: August 2024

AbstractThe management and prevention of hydrates are crucial for the gas industry. This study delves into the intricate challenges associated with gas hydrate formation, with a specific focus on investigating the impact of corrosion by‐products on prevention strategies. Employing a distinctive methodology, the sapphire pressure–volume temperature (PVT) cell was utilized. Experimental tests were conducted using sodium chloride (NaCl) concentrations of 1% and 3% to simulate brine solution levels at the wellhead, incorporating 3% filtrate and unfiltered iron carbonate (FeCO3) as corrosion products associated with the production process. The 1% and 3% salt concentrations were chosen to encompass a broad range of temperature depressions, reflecting common industry standards for simulating realistic environmental conditions. PVT cell test conditions ranged from 80 to 200 bar, with increments of 40 bar. The experiments investigate the effects of common pipeline salts on a monoethylene glycol (MEG)/water mixture in the presence of methane gas at typical industry high‐pressure conditions. The investigation uncovers that the introduction of salts to water, methane, and MEG solutions serves as a hydrate inhibitor, with inhibitory effects directly correlated to salt concentration. While generally hydrate growth inhibition is beneficial in natural gas pipelines, the findings indicate that elevated salt concentrations and lower pressure conditions contribute to the formation of larger hydrates, heightening the risk of surface adhesion and potentially introducing complications in piping equipment, despite the decreased temperature at which these hydrates form due to the inhibitory effects of the salts. In particular, the mixed condition of 3% NaCl and 3% FeCO3 (filtered) has the strongest effect. Examination of hydrate formation temperature and macroscopic observations suggests that the existence of substantial precipitates, as evidenced in the unfiltered FeCO3 sapphire cell experiment, may have the potential to enhance hydrate growth.