bluuebunny/crossref_metadata_2025_split huggingface dataset:
Observation of Iron with Eight Coordination in Iron Trifluoride under High Pressure
Authors: Lu Wencheng , Liu Siyu , Zhou Mi , Wang Hongbo , Liu Guangtao , Liu Hanyu , Ma Yanming 
Published: January 2024

AbstractThe chemistry of hypercoordination has been a subject of fundamental interest, especially for understanding structures that challenge conventional wisdom. The small ionic radii of Fe ions typically result in coordination numbers of 4 or 6 in stable Fe‐bearing ionic compounds. While 8‐coordinated Fe has been observed in highly compressed oxides, the pursuit of hypercoordinated Fe still faces significant challenges due to the complexity of synthesizing the anticipated compound with another suitable anion. Through first‐principles simulation and advanced crystal structure prediction methods, we predict that an orthorhombic phase of FeF3 with exclusively 8‐coordinated Fe is energetically stable above 18 GPa—a pressure more feasibly achieved compared to oxides. Inspired by this theoretical result, we conducted extensive experiments using a laser‐heated diamond anvil cell technique to investigate the crystal structures of FeF3 at high‐pressure conditions. We successfully synthesized the predicted orthorhombic phase of FeF3 at 46 GPa, as confirmed by in situ experimental X‐ray diffraction data. This work establishes a new ionic compound featuring rare 8‐coordinated Fe in a simple binary Fe‐bearing system and paves the way for discovering Fe hypercoordination in similar systems.
Photocatalysis Meets Confinement: An Emerging Opportunity for Photoinduced Organic Transformations
Authors: Hao Yanke , Lu Yu‐Lin , Jiao Zhiwei , Su Cheng‐Yong 
Published: January 2024

AbstractThe self‐assembled metal‐organic cages (MOCs) have been evolved as a paradigm of enzyme‐mimic catalysts since they are able to synergize multifunctionalities inherent in metal and organic components and constitute microenvironments characteristic of enzymatic spatial confinement and versatile host–guest interactions, thus facilitating unconventional organic transformations via unique driving‐forces such as weak noncovalent binding and electron/energy transfer. Recently, MOC‐based photoreactors emerged as a burgeoning platform of supramolecular photocatalysis, displaying anomalous reactivities and selectivities distinct from bulk solution. This perspective recaps two decades journey of the photoinduced radical reactions by using photoactive metal‐organic cages (PMOCs) as artificial reactors, outlining how the cage‐confined photocatalysis was evolved from stoichiometric photoreactions to photocatalytic turnover, from high‐energy UV‐irradiation to sustainable visible‐light photoactivation, and from simple radical reactions to multi‐level chemo‐ and stereoselectivities. We will focus on PMOCs that merge structural and functional biomimicry into a single‐cage to behave as multi‐role photoreactors, emphasizing their potentials in tackling current challenges in organic transformations through single‐electron transfer (SET) or energy transfer (EnT) pathways in a simple, green while feasible manner.
A Stable Extra‐Large Pore and High‐Silica Zeolite Derived from Ge‐Rich Precursor
Authors: Zhao Yuhong , Wu Shitao , Wang Jilong , Peng Mingming , Xu Hao , Jiang Jingang , Ma Yanhang , Wu Peng 
Published: January 2024

AbstractA multidimensional extra‐large pore zeolite with highly hydrothermal stability, denoted as −IRT−HS, has been developed successfully, starting from Ge‐rich germanosilicate precursor hydrothermally directed by a small and commercially available piperidinium‐type organic structure‐directing agent (OSDA). −IRT−HS, with the supermicropores, is structurally analogues to 28‐membered ring −IRT topology as confirmed by various spectroscopic techniques. And it is the high‐silica (Si/Ge=58) zeolite with the largest pore size as well. Notably, using acid‐washed as‐made Ge‐rich −IRT precursor as the silicon source is crucial to restore partially collapsed structure into a stable framework by OSDA‐assisted recrystallization. The calcined −IRT−HS maintains a high crystallinity, even when stored in a humid environment for extended periods or directly exposed to water. Additionally, high silica Al‐containing analogue is also readily synthesized, serving as an active solid‐acid catalyst in 1,3,5‐triisopropylbenzene cracking reaction, yielding an impressive initial conversion up to 76.1 % much higher than conventional large‐pore Beta zeolite (30.4 %). This work will pave the way for the designed synthesis of targeted high‐silica zeolites with stable and extra‐large pore frameworks, mimicking the structures of existing Ge‐rich counterparts.
Enabling Highly Robust Full‐Color Ultralong Room‐Temperature Phosphorescence and Stable White Organic Afterglow from Polycyclic Aromatic Hydrocarbons
Authors: Liang Yaohui , Hu Pengtao , Zhang Huaqing , Yang Qingchen , Wei Hengshan , Chen Ruitai , Yu Jiahai , Liu Cong , Wang Yuhai , Luo Suilian , Shi Guang , Chi Zhenguo , Xu Bingjia 
Published: January 2024

AbstractIn this work, full‐color and stable white organic afterglow materials with outstanding water, organic solvents, and temperature resistances have been developed for the first time by embedding the selected polycyclic aromatic hydrocarbons into melamine‐formaldehyde polymer via solution polymerization. The afterglow quantum yields and lifetimes of the resulting polymer films were up to 22.7 % and 4.83 s, respectively, under ambient conditions. For the coronene‐doped sample, its afterglow color could be linearly tuned between yellow and blue by adjusting the temperature, and it could still emit an intense blue afterglow with a lifetime of 0.68 s at 440 K. Moreover, the films showed a bright and stable white afterglow at 370 K with a lifetime of 2.80 s and maintained an excellent afterglow performance after soaking in water and organic solvents for more than 150 days. In addition, the application potential of the polymer films in information encryption and anti‐counterfeiting was also demonstrated.
Abundance of five sympatric stream dwelling mussels varies with physical habitat
Authors: Skorupa Ayla J. , Roy Allison H. , Hazelton Peter D. , Perkins David , Warren Timothy , Fisk Andy 
Published: January 2024

Abstract
Freshwater mussel species regularly co‐occur in streams forming assemblages, but the extent of shared versus unique instream habitat features that contribute to their distribution and abundance is poorly understood. In Massachusetts, a rare species, Alasmidonta varicosa, is often found with four other species: Alasmidonta undulata, Strophitus undulatus, Margaritifera margaritifera, and Elliptio complanata, yet variation in species composition within assemblages raises questions of potential species‐specific habitat associations. Identifying species‐level habitat information is critical at a spatial scale that malacologists can use to identify translocation or restoration areas.
This study investigated whether species abundance varied by mesohabitat type (riffle, run, dam pool, scour pool), instream habitat characteristics, and within‐reach location (centre versus edge). From 2016 to 2019, freshwater mussel surveys were conducted in nine streams across Massachusetts and associated habitat information was collected.
Species abundances were similar across mesohabitat types. Elliptio complanata was the exception, whereby higher abundances occurred in runs and dammed pools than in riffles. Unique species relationships with habitat existed for M. margaritifera with macroalgae and emergent vegetation, and A. varicosa with heterogeneous substrate. Flow transitions, such as depositional areas that create heterogeneous substrates, may provide habitats for A. varicosa.
Most mussel species were distributed with higher abundance in the river centre than the edge; E. complanata was the only species with a higher abundance at the river edge. Locations with high abundance varied based on unique relationships with pebble heterogeneity (A. varicosa), depth (A. undulata), large wood (A. undulata), and canopy closure (E. complanata). Including physical characteristics in a holistic assessment of habitat that incorporates fish and landscape attributes may further an understanding of river reaches that best support translocated and propagated freshwater mussels.
Interrelationships among Early Triassic faunas of Western Gondwana and Laurasia as illuminated by a new South American benthosuchid temnospondyl
Authors: Pinheiro Felipe L. , Eltink Estevan , Paes‐Neto Voltaire D. , Machado Arielli F. , Simões Tiago R. , Pierce Stephanie E. 
Published: January 2024

AbstractThe End‐Permian Mass Extinction marked a critical turning point in Earth's history, and the biological recovery that followed the crisis led to the emergence of several modern vertebrate and invertebrate taxa. Even considering the importance of the Early Triassic biotic recovery for the evolution of modern faunas and floras, our knowledge of this event is still hindered by the sparse sampling of crucial geological formations. This leaves our understanding of Early Triassic ecosystems fundamentally biased toward productive and historically well‐explored geological units. Recent surveys in poorly known Gondwanan localities, such as those within the Sanga do Cabral Formation in southern Brazil, have unveiled insights into Early Triassic terrestrial ecosystems, shedding light on a diverse and previously unknown tetrapod fauna. Here, we report the discovery of a new temnospondyl genus and species in the Lower Triassic Sanga do Cabral Formation. The new taxon can be confidently assigned to the Benthosuchidae, a stereospondyl clade with a distribution previously restricted to the East European Platform. Phylogenetic analysis confirms the relationship of the new genus to the trematosaurian lineage, being closely related to the genus Benthosuchus. Our results raise questions about the biogeographical history of stereospondyls after the End‐Permian Mass Extinction and suggest a potential connection between Russian and South American Early Triassic faunas. Further investigations are needed to thoroughly explore the potential dispersal routes that may explain this seemingly unusual biogeographical pattern.
Fe3C/Fe Decorated N‐doped Carbon Derived from Tetrabutylammonium tetrachloroferrate Complex as Bifunctional Electrocatalysts for ORR, OER and Zn‐Air Batteries in Alkaline Medium
Authors: Ghosh Debojit , Banerjee Rumeli , Bhaduri Samanka Narayan , Chatterjee Rupak , Ghosh Abhisek Brata , Das Samarpita , Pramanick Indrani , Bhaumik Asim , Biswas Papu 
Published: January 2024

AbstractThe emergence of non‐precious metal‐based robust and economic bifunctional oxygen electrocatalysts for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial for the rational design of commercial rechargeable Zn‐air batteries (RZAB) with safe energy conversion and storage systems. Herein, a facile strategy to fabricate a cost‐efficient, bifunctional oxygen electrocatalyst Fe3C/Fe decorated N doped carbon (FeC‐700, the catalyst prepared at carbinization temperature of 700 °C) with a unique structure has been developed by carbonization of a single source precursor, tetrabutylammonium tetrachloroferrate(III) complex. The ORR and OER activity revealed excellent performance (ΔE=0.77 V) of the FeC‐700 electrocatalyst, comparable to commercial Pt/C and RuO2, respectively. The designed temperature‐tuneable structure provided sufficiently accessible active sites for the continuous passage of electrons by shortening the mass transfer pathway, leading to extremely durable electrocatalysts with high ECSA and amazing charge transfer performance. Remarkably, the assembled Zn‐air batteries with the FeC‐700 catalyst as the bifunctional air electrode delivers gratifying charging‐discharging ability with an impressive power density of 134 mW cm−2 with a long lifespan, demonstrating prodigious possibilities for practical application.
Factors affecting product association as a mechanism of host‐cell protein persistence in bioprocessing
Authors: Oh Young Hoon , Becker Matthew L. , Mendola Kerri M. , Choe Leila H. , Min Lie , Lee Kelvin H. , Yigzaw Yinges , Seay Alexander , Bill Jerome , Li Xuanwen , Roush David J. , Cramer Steven M. , Menegatti Stefano , Lenhoff Abraham M. 
Published: January 2024

AbstractProduct association of host‐cell proteins (HCPs) to monoclonal antibodies (mAbs) is widely regarded as a mechanism that can enable HCP persistence through multiple purification steps and even into the final drug substance. Discussion of this mechanism often implies that the existence or extent of persistence is directly related to the strength of binding but actual measurements of the binding affinity of such interactions remain sparse. Two separate avenues of investigation of HCP‐mAb binding are reported here. One is the measurement of the affinity of binding of individual, commonly persistent Chinese hamster ovary (CHO) HCPs to each of a set of mAbs, and the other uses quantitative proteomic measurements to assess binding of HCPs in a null CHO harvested cell culture fluid (HCCF) to mAbs produced in the same cell line. The individual HCP measurements show that the binding affinities of individual HCPs to different mAbs can vary appreciably but are rarely very high, with only weak pH dependence. The measurements on the null HCCF allow estimation of individual HCP‐mAb affinities; these are typically weaker than those seen in affinity measurements on isolated HCPs. Instead, the extent of binding appears correlated with the initial abundance of individual HCPs in the HCCF and the forms of the HCPs in the solution, i.e., whether HCPs are present as free molecules or as parts of large aggregates. Separate protein A chromatography experiments performed by feeding different fractions of a mAb‐containing HCCF obtained by size‐exclusion chromatography (SEC) showed clear differences in the number and identity of HCPs found in the protein A eluate. These results indicate a significant role for HCP‐mAb association in determining HCP persistence through protein A chromatography, presumably through binding of HCP‐mAb complexes to the resin. Overall, the results illustrate the importance of considering more fully the biophysical context of HCP‐product association in assessing the factors that may affect the phenomenon and determine its implications. Knowledge of the abundances and the forms of individual or aggregated HCPs in HCCF are particularly significant, emphasizing the integration of upstream and downstream bioprocessing and the importance of understanding the collective properties of HCPs in addition to just the biophysical properties of individual HCPs.
Does intrinsic motivation or extrinsic pressure matter more? An exploratory study of small businesses going green and innovation
Authors: Nguyen Bach , Vu Nhung 
Published: January 2024

AbstractSmall firms may go green because of intrinsic motivation (to realise their green values) or extrinsic pressure (to satisfy the requirements of stakeholders). While the impacts of these two motivations on firms' green behaviours have been discussed in the literature, their influences on economic behaviours such as innovation remain unclear. This paper aims to investigate the relationship between going green due to intrinsic versus extrinsic motivations and their impact on firms' innovation. We examine a dataset of almost 21,000 small businesses in 39 countries, primarily less developed, from 2018 to 2020. We find that firms going green tend to be more innovative than those that do not. Also, firms going green due to extrinsic pressure are equally innovative as those that do so for intrinsic motivation. In some cases, it is even found that extrinsic pressure exerts a stronger effect on innovation than intrinsic motivation. Moreover, we examine the moderating effects of market competition on the relationship between green motivation and innovation. We find that while competition exerts no effect on the relationship between intrinsic motivation to go green and firm innovation, it strengthens the relationship between extrinsic motivation to go green and firm innovation. Our findings are robust in different empirical settings that control for endogeneity, model specifications and estimators.
Environmental pressure and board gender diversity: Evidence from the European Union Emission Trading System
Authors: Dutordoir Marie , Schoubben Frederiek , Struyfs Kristof , Torsin Wouter 
Published: January 2024

AbstractWe examine how environmental pressure influences board gender diversity. Drawing from resource dependence, strategic adaptation, and gender socialization theories, we develop and test the prediction that firms with worse environmental performance have a higher likelihood of increasing their board gender diversity following a rise in environmental pressure. Focusing on the third phase (2013–2019) of the European Union Emission Trading System (EU ETS), we exploit the unexpected increase in emission prices after the European Council's (EC) intervention in 2017 as a quasi‐natural experiment bringing heightened environmental pressure to firms. Our baseline sample consists of 182 polluting firms in 20 different EU ETS‐covered countries. In line with our main hypothesis, we find that board gender diversity increases with firms' industry‐adjusted levels of pollution in the post‐EC intervention period, with the effect being particularly pronounced for firms with a higher exposure to emission prices and lower diversity levels. Inconsistent with a window dressing explanation, highly polluting firms replace incumbent male board members with highly qualified women. Our findings, which survive several robustness tests, suggest that more stringent environmental regulation drives social and governance changes at top corporate levels.
Examining the impact of head‐mounted augmented reality on learning engineering drawings: A case study for three‐view drawing
Authors: Yuan Qingshu , Shou Kailiang , Xu Jin , Yao Zhengwei , Pan Zhigeng 
Published: January 2024

AbstractAs the cornerstone of spatial geometry and engineering drawings, three‐view drawing lays the necessary foundation for students to learn geography, graphics, industrial design, geographic information science, and so forth. However, teaching three‐view drawing can be challenging due to its abstraction. Currently, desktop and handheld augmented reality (AR) systems are widely applied to three‐view teaching. However, existing systems suffer from visuo‐tactile inconsistency and contain unfriendly interactions, resulting in a poor learning experience. In this paper, head‐mounted AR is introduced for the first time in the teaching of three‐view drawing. A system was designed for learning three‐view drawing to facilitate students' free exploration and learning in lessons. Additionally, a comparative experiment was designed and conducted to investigate whether multimodal interaction and head‐mounted AR help students to better understand the relationship between concrete three‐dimensional (3D) objects and abstract two‐dimensional planes and the impact on subjective perceptions. The results demonstrated that the proposed system significantly improved learning performance. Furthermore, the proposed system heightened students' interest in learning, made reproducing 3D structures more intuitive, and students were more willing to use such systems in their future studies.
Neurocognitive and psychosocial outcomes in survivors of childhood leukemia with Down syndrome
Authors: Gandy Kellen , Hall Lacey , Krull Kevin R. , Esbensen Anna J. , Rubnitz Jeffrey , Jacola Lisa M. 
Published: January 2024

AbstractObjectiveThe primary aim of this study was to assess the feasibility of a developmentally tailored neurocognitive assessment in survivors of childhood acute leukemia with Down syndrome (DS‐leukemia). A secondary aim was to compare outcomes in the DS‐leukemia group to a historical comparison group of individuals with DS and no history of childhood cancer.MethodsSurvivors of DS‐leukemia (n = 43; 56% male, mean [SD] age at diagnosis = 4.3 [4.5] years; age at evaluation = 15 [7.9] years) completed a neurocognitive assessment battery that included direct measures of attention, executive function, and processing speed, and proxy ratings of attention problems and executive dysfunction. Direct assessment outcomes were compared to a historical comparison cohort of individuals with DS and no history of childhood cancer (DS‐control; n = 117; 56% male, mean [SD] age at evaluation = 12.7 [3.4] years).ResultsRates of valid task completion ranged from 54% to 95%, suggesting feasibility for most direct assessment measures. Compared to the DS‐control group, the DS‐leukemia group had significantly lower completion rates on measures of executive function (p = 0.008) and processing speed (p = 0.018) compared to the DS‐control group. There were no other significant group differences in completion rates. Compared to the DS‐control group, the DS‐leukemia group had significantly more accurate performance on two measures of executive function (p = 0.032; p = 0.005). Compared to the DS‐control group, the DS‐leukemia group had significantly more problems with executive function as identified on proxy ratings (6.5% vs. 32.6%, p = <0.001).ConclusionChildren with Down syndrome (DS) are at increased risk for developing acute leukemia compared to the general population but are systematically excluded from neurocognitive outcome studies among leukemia survivors. This study demonstrated the feasibility of evaluating neurocognitive late effects in leukemia survivors with DS using novel measures appropriate for populations with intellectual developmental disorder.
The dynamic nature of brand authenticity for a new brand: Creating and maintaining perceptions through iconic, indexical, and existential cues
Authors: Joo Soyoung , Guèvremont Amélie 
Published: January 2024

AbstractAlthough brand authenticity has been studied across multiple domains, the developmentandmaintenance of brand authenticity in new brands has never been explored. This study provides the first evidence of the evolving nature of brand authenticity (i.e., the creation and maintenance phases) through the interplay of iconic (impression‐based brand characteristics), indexical (evidence‐based brand characteristics), and existential (self‐referential brand characteristics) cues for a new brand. Sixteen season ticket holders for a new sports team brand were interviewed two times each (during and after the team's inaugural season). The analysis shows the interplay of authenticity cues in the development and maintenance of authenticity perceptions, such that indexical and existential cues replace iconic cues as the consumer‐brand relationship evolves. The results reveal the critical roles of existential cues in creating a self‐relevant relationship with consumers as well as the underlying dimensions (i.e., virtuousness, proximity, and transparency) and outcomes (e.g., brand attitude and emotional brand attachment) of authenticity for a new brand. This study provides evidence that new brands can benefit from authenticity perceptions and offers insights into the underlying process in terms of antecedents and outcomes, contributing to authenticity and branding literature.