bluuebunny/crossref_metadata_2025_split huggingface dataset:
Current status of professional memory clinics, inpatient services, and health professionals in China
Authors: Gan Jinghuan , Xin Jiawei , Wang Gang , Pan Xiaoping , Ren Zhihong , Xu Yuming , Peng Guoping , Sun Li , Zhang Min , You Yong , Chen Xuhui , Li Xia , Ji Yong , Chen Xiaochun 
Published: September 2024

AbstractINTRODUCTIONThis study aims to explore the current status of dementia‐specific diagnosis and treatment in China.METHODSThis national survey was conducted in mainland China from September 2022 to February 2023, with strong support from the Cognitive Disorders Group of the Chinese Society of Neurology, Chinese Medical Association.RESULTSAmong 2721 hospitals surveyed, 244 (8.97%) have dementia‐specific clinics (DSCs) and 166 (6.10%) have dementia‐specific inpatient departments (DSIDs). Almost all hospitals have brain structural imaging capabilities and basic hematological examinations, but dementia‐specific medical staff (DSMS) equipped for DSCs or DSIDs are rare. The proportion of patients with cognitive impairment receiving care through a DSCs or DSIDs is low, and most patients present with advanced (moderate to severe) disease.CONCLUSIONThe survey shows that the proportion of DSCs and DSIDs is low, and the regional distribution varies significantly. Trained DSMS and specialized facilities for the diagnosis and treatment of dementia are inadequate.Highlights
This study was a multi‐center national research to comprehensively investigate the distribution and features of dementia‐specific clinics and inpatient departments in mainland China, given that the limited literature was available regarding the dementia‐specific centers.
The study points to significant regional differences in the distribution of cognitive‐specific clinics and inpatient departments in mainland China. More centers in Eastern Regions compared to Western Regions, a greater presence in provincial capitals as opposed to other cities, and a predominance of tertiary hospitals over non‐tertiary ones. The aim is to provide data support for advancements in medical research within this field.
Domestic dementia patients have inadequate access to specialized medical resources and expert assistance, which significantly contrasts with the growing number of dementia cases in China.
Stereocontrolled Synthesis of Chiral Helicene‐Indenido ansa‐ and Half‐Sandwich Metal Complexes and Their Use in Catalysis
Authors: Edlová Tereza , Rybáček Jiří , Cattey Hélène , Vacek Jaroslav , Bednárová Lucie , Le Gendre Pierre , Normand Adrien T. , Stará Irena G. , Starý Ivo 
Published: September 2024

AbstractDespite recent tremendous progress in the synthesis of nonplanar chiral aromatics, and helicenes in particular, their conversion to half‐sandwich or sandwich transition metal complexes still lags behind, although they represent an attractive family of modular and underexplored chiral architectures with a potential catalytic use. In this work, starting from various chiral helicene‐indene proligands, we prepared the enantio‐ and diastereopure oxa[6]‐ and oxa[7]helicene‐indenido half‐sandwich RhI and RhIII complexes and oxa[7]helicene‐bisindenido ansa‐metallocene FeII complex. To document their use, oxahelicene‐indenido half‐sandwich RhIII complexes were employed as chiral catalysts in enantioselective C−H arylation of benzo[h]quinolines with 1‐diazonaphthoquinones to afford a series of axially chiral biaryls in mostly good to high yields and in up to 96 : 4 er. Thus, we developed stereocontrolled synthesis of chiral helicene‐indenido ansa‐ and half‐sandwich metal complexes, successfully demonstrated the first use of such helicene Cp‐related metal complexes in enantioselective catalysis, and described an unusual sequence of efficient central‐to‐helical‐to‐planar‐to‐axial chirality transfer.
Anomalous Pressure‐Induced Blue‐Shifted Emission of Ionic Copper‐Iodine Clusters: The Competitive Effect between Cuprophilic Interactions and Through‐Space Interactions
Authors: Wang Shanshan , Yang Zhiqiang , Sun Xuening , Wu Min , Sheng Kaiyang , Zhang Long , Yang Bing , Wang Kai , Sui Yongming , Zou Bo 
Published: September 2024

AbstractDeveloping ionic copper‐iodine clusters with multiple emitting is crucial for enriching lighting and display materials with various colors. However, the luminescent properties of traditional ionic copper‐iodine clusters are often closely associated with low‐energy cluster‐centered triplet emission, which will redshift further as the Cu⋅⋅⋅Cu bond length decreases. This article utilizes a pressure‐treated strategy to achieve an anomalous pressure‐induced blue‐shifted luminescence phenomenon in ionic Cu4I6(4‐dimethylamino‐1‐ethylpyridinium)2 crystals for the first time, which is based on dominant through‐space charge‐transfer (TSCT). Herein, we reveal that the more advantageous through‐space interactions in the competition between cuprophilic interactions and through‐space interactions can lead to a blue‐shifted luminescence. High‐pressure angle‐dispersive X‐ray diffraction and high‐pressure infrared experiments show that the enhanced through‐space interactions mainly originate from forming new intermolecular C−H⋅⋅⋅I hydrogen bonds and the enhancement of van der Waals interactions between organic cations and anionic clusters. Theoretical calculations and experimental studies of excited‐state dynamics confirm that the blue‐shifted emission is due to the increased energy gap between the excited triplet and ground states caused by the electron delocalization under stronger through‐space interactions. This work deepens previous understanding and provides a new avenue to design and synthetic ionic copper‐iodine clusters with high‐energy TSCT emission.
Fully Exposed Ru Clusters for the Efficient Multi‐Step Toluene Hydrogenation Reaction
Authors: Wang Yue , Yu Hancheng , He Yurong , Xiang Shengling , Qin Xuetao , Yang Lini , Chen Jiawei , Si Yang , Zhang Jingwang , Diao Jiangyong , Wang Ning , Peng Mi , Ma Ding , Liu Hongyang 
Published: September 2024

AbstractLiquid organic hydrogen carriers (LOHCs) are attractive platform molecules that play an important role in hydrogen energy storage and utilization. The multi‐step hydrogenation of toluene (TOL) to methylcyclohexane (MCH) has been widely studied in the LOCHs systems, due to their relatively low toxicity and reasonable hydrogen storage capacity. Noble metal catalysts such as Ru has exhibited good performance in multi‐step hydrogenation reactions, while the application is still hindered by their high cost and low specific activity. Therefore, the primary challenge lies in the development of noble metal catalysts with both robust activity and efficient atomic utilization. In this study, a series of Ru species ranging from single atoms, fully exposed clusters to nanoparticles were fabricated to investigate their structural evolution in the TOL multi‐step hydrogenation reaction. The fully exposed and atomically dispersed Ru clusters, composed of an average of 3 Ru atoms, exhibit superior catalytic performance and recycle ability in TOL multi‐step hydrogenation. Moreover, it delivers a high turnover frequency of 9850.3 h−1 under the relatively mild reaction (100 °C, 1.5 MPa), compared with those of single atoms and nanoparticles, and shows a notable advantage over catalysts reported in previous studies. From density functional theory (DFT) calculations, the overall barrier of the TOL multi‐step hydrogenation reaction over the fully exposed Ru clusters is significantly lower than that of single atoms and nanoparticles, resulting in its higher activity. The present work provides an efficient strategy to regulate the reaction pathway of multi‐step complicated catalytic reactions by designing fully exposed metal cluster catalysts.
Single‐Molecule Mechanoresistivity by Intermetallic Bonding
Authors: Sil Amit , Spano Chiara E. , Chelli Yahia , Higgins Simon J. , Sangtarash Sara , Piccinini Gianluca , Graziano Mariagrazia , Nichols Richard J. , Sadeghi Hatef , Vezzoli Andrea 
Published: September 2024

AbstractThe metal‐electrode interface is key to unlocking emergent behaviour in all organic electrified systems, from battery technology to molecular electronics. In the latter, interfacial engineering has enabled efficient transport, higher device stability, and novel functionality. Mechanoresistivity – the change in electrical behaviour in response to a mechanical stimulus and a pathway to extremely sensitive force sensors – is amongst the most studied phenomena in molecular electronics, and the molecule‐electrode interface plays a pivotal role in its emergence, reproducibility, and magnitude. In this contribution, we show that organometallic molecular wires incorporating a Pt(II) cation show mechanoresistive behaviour of exceptional magnitude, with conductance modulations of more than three orders of magnitude upon compression by as little as 1 nm. We synthesised series of cyclometalated Pt(II) molecular wires, and used scanning tunnelling microscopy – break junction techniques to characterise their electromechanical behaviour. Mechanoresistivity arises from an interaction between the Pt(II) cation and the Au electrode triggered by mechanical compression of the single‐molecule device, and theoretical modelling confirms this hypothesis. Our study provides a new tool for the design of functional molecular wires by exploiting previously unreported ion‐metal interactions in single‐molecule devices, and develops a new framework for the development of mechanoresistive molecular junctions.
Fluorescence capturing behaviour of cyanobacterial resilience: Insights into UV‐exposed ecosystems and its environmental applications
Authors: R. Prathima , M Basalingappa Kanthesh , D. Sai Kavya , K. R. Arjun , K. Girish Kanavi , J. Suresh , Murugesan Karthikeyan , Radhakrishnan Anjuna , Kandaswamy Deepa , Roy Bedanta , Thangaswamy Selvankumar , Selvaraj Bharath , R Jaganathan , M Maghimaa 
Published: September 2024

AbstractCyanobacteria are resilient microorganisms and thrive in environments exposed to UV radiation, ranging from ocean surfaces to scorching hot springs and dry expanses. ‘Cyanobacterial Resilience’ refers to their ability to withstand UV radiation, revealing intricate genomic secrets and adaptive mechanisms ensuring survival. These mechanisms include metabolic adaptations, robust DNA repair systems and UV‐protective compounds such as Scytonemin and Mycosporine, vital for shielding against UV radiation survival. Cyanobacteria are crucial pioneers in UV‐exposed ecosystems, highlighting their resilience and adaptability. Some cyanobacteria exhibit luminescence, emitting blue‐green light due to phycobiliproteins, while bioluminescence in cyanobacteria, if it occurs, involves different compounds rather than luciferins and luciferase enzymes. This luminescence holds promise for various biotechnological applications, such as biosensors, imaging probes and carbon sequestration, for participating in photocatalytic processes for water purification and CO2 conversion, and contributes to solar simulation studies to advance photosynthesis and renewable energy technologies. The versatile applications of these materials highlight their ecological importance and potential in addressing global challenges. In conclusion, ‘Cyanobacterial Resilience’ highlights the remarkable adaptation strategies of cyanobacteria in UV‐exposed environments. It emphasises their role as pioneers and innovators in biological and technological domains, providing insights into their enduring impact on ecosystems and scientific advancement.
Investigation of red‐emitting CaMoO4: Eu3+ phosphor by partitioning of substitutional PO43− ions via solid‐state reaction method
Authors: Letswalo Machaba L. A. , Reddy Leelakrishna , Balakrishna Avula , Swart Hendrik C. , Ntwaeaborwa Odireleng M. 
Published: September 2024

AbstractTo investigate the impact of PO43− anionic groups, the trivalent europium ion‐doped calcium molybdate (CaMoO3‐PO4:xEu3+, where x = 0.5, 1.0, 1.5, 2.0, and 2.5 mol%) phosphors were synthesized using the solid‐state reaction method. The detailed study of the phosphor materials was carried out by X‐ray diffraction (XRD), field emission scanning electron microscopy (FE‐SEM), Fourier transform infrared spectroscopy (FT‐IR), X‐ray photoelectron spectroscopy (XPS), optical diffuse reflectance spectroscopy (DRS), and photoluminescence (PL) spectroscopy. The XRD results indicate that the substitution of PO43− anion and Eu3+ dopant ion did not affect the crystal structures of the CaMoO4 phosphors. Ultraviolet–visible (UV–vis) absorption analysis revealed the change of absorption edge of both un‐doped and Eu3+‐doped CaMoO4‐PO4 phosphors. Under the 394 nm UV‐excitation, the recorded PL spectra showed an intense peak at 615 nm corresponding to the Eu3+: 5D0 → 7F2 transition. The results of the Commission Internationale de l'Eclairage (CIE) diagram reported that the color of the emissions lies in the red color zone and there is no change in the CIE coordinates of the overall emission for Eu3+‐doped CaMoO4‐PO4 as Eu concentration changes. Thus, these observations led to finding the best red components for white light‐emitting diode applications.
Nanocomposite Hydrogels from Nanodiamonds and a Self‐Assembling Tripeptide
Authors: Marin Davide , Kralj Slavko , Stehlik Stepan , Marchesan Silvia 
Published: September 2024

AbstractWe report the successful assembly of a tripeptide in the presence of nanodiamonds (NDs) into nanocomposite hydrogels. While the presence of NDs does not hinder peptide self‐assembly and gelation kinetics are not affected, NDs improve the viscoelastic properties and significantly increase the elastic moduli of the peptide hydrogels. Increased resistance of the gels against applied stress can also be attained depending on the amount of NDs loaded in the nanocomposite. Raman micro‐spectroscopy and TEM confirmed the presence of NDs on the surface, and not in the interior, of peptide nanofibers. Peptide‐ND non‐covalent interactions are also probed by Raman and Fourier‐transformed infrared spectroscopies. Overall, this work enables the embedding of NDs into nanocomposite hydrogels formed through the self‐assembly of a simple tripeptide at physiological pH, and it provides key insights to open the way for their future applications in biomaterials, for instance exploiting their luminescence and near‐infrared responsiveness.
Identifying institutional gaps: Implications for an early‐stage support framework for impact entrepreneurs
Authors: Bläse Richard , Filser Matthias , Weise Jana , Björck Albena , Puumalainen Kaisu 
Published: September 2024

AbstractImpact entrepreneurship is a pivotal force in harmonizing environmental, social, and economic objectives, yet in the early stages of their ventures, entrepreneurs face complex challenges. Grounded in institutional theory, this study investigates the unique needs of impact entrepreneurs and uncovers shortcomings in the existing institutional support frameworks. An in‐depth qualitative analysis was conducted involving semi‐structured interviews with successful impact entrepreneurs and identifying key needs across four main categories: knowledge frameworks, entrepreneurial skill sets, resource dependencies, and sociocultural and personal elements. We deduced essential requirements for clear operational guidelines, financial and legal support systems, collaborative academic interactions, and access to a skilled workforce. Our findings challenge the efficiency and alignment of current support mechanisms with the unique demands of impact entrepreneurship. Finally, this investigation not only sheds light on the complex needs of impact entrepreneurs but also contributes significantly to the academic discourse by recommending improvements in institutional support structures, potentially reshaping the field of impact entrepreneurship.
In‐Situ HF Forming Agents for Sustainable Manufacturing of Iron‐Based Oxygen Reduction Reaction Electrocatalysis Synthesized Through Sacrificial Support Method
Authors: Mostoni Silvia , Mirizzi Lorenzo , Frigerio Alessandra , Zuccante Giovanni , Ferrara Chiara , Muhyuddin Mohsin , D'Arienzo Massimiliano , Fernanda Orsini Sara , Scotti Roberto , Cosenza Alessio , Atanassov Plamen , Santoro Carlo 
Published: September 2024

AbstractFe−Nx−Cs being suitable to replace scarce and overpriced platinum group metals (PGMs) for cathodic oxygen reduction reaction (ORR) are gaining significant importance in the fuel cell arena. Although the typical sacrificial support method (SSM) ensures the superior electrocatalytic activity of derived Fe−Nx−C, removing silica hard templates always remains a great challenge due to the hazardous use of highly toxic and not environmentally friendly hydrofluoric acid. Herein, strategic insight was given to modified SSM by exploiting the in‐situ formation of HF, deriving from the decomposition of NH4HF2 and NaF, to dissolve silica templates, thus avoiding the direct use of HF. First, the suitable molar ratio between the etching agent and the silica was analyzed, revealing that NH4HF2 efficiently dissolved silica even in a stoichiometric amount, whereas an excess of NaF was required. However, both etching agents exhibited conformal removal of silica while dispersed active moieties within the highly porous architecture of derived electrocatalysts were left behind. Moreover, NH4HF2‐washed counterparts demonstrated relatively higher performance both in acidic and alkaline media. Notably, with NH4HF2‐washed Fe−Nx−C electrocatalyst, a remarkable onset potential of 970 mV (vs RHE) was achieved with nearly tetra‐electronic ORR as the peroxide yield remained less than 10 % in the alkaline medium.
Rhodium/Trialkylamines Catalyzed Reductive Hydroformylation in Ionic Liquid/Heptane Medium: An Unexpected Concept for Catalyst Recycling in Batch and Continuous Flow Processes
Authors: El Mouat Abdelghani , Abdallah Walid , Ternel Jérémy , Ferreira Michel , Bricout Hervé , Vorholt Andreas J. , Stieber Hannah , Stoertte Sven , Monflier Eric , Lahcini Mohammed , Tilloy Sébastien 
Published: September 2024

AbstractWe report here the rhodium catalyzed reductive hydroformylation of methyl 10‐undecenoate. Our approach is based on an ionic liquid/heptane biphasic system associated with commercially available trialkylamines. The effects of various reaction parameters such as amine type, amine amount, temperature, syngas pressure and composition were studied in order to minimize the rhodium leaching and increase the production of primary alcohols. Although the amine is less soluble in the ionic liquid than in heptane, the catalytic system is efficiently maintained in the ionic liquid phase. For the optimized conditions, the catalytic ionic liquid layer can be recycled at least nine times by keeping an alcohol yield over 50 % and by limiting the rhodium leaching. As an extension of this system and to examine the long‐term stability, this batch system was transferred to a miniplant for a continuous flow process. A pilot plant was operated for 45 h of total reaction time, reaching a TTON of 232 for alcohol production.
Stable and Versatile Pd Precursors for the Preparation of Robust Pd Catalysts Under Continuous‐Flow
Authors: Sakurada Naoya , Kobayashi Kwihwan , Abe Yuka , Niwa Kosuke , Yokoyama Takashi , Yamada Tsuyoshi , Ikawa Takashi , Sajiki Hironao 
Published: September 2024

AbstractTo achieve global sustainability, the chemical and engineering communities require the development of versatile precursors that can be used to synthesize robust catalysts. To meet this demand, we developed a new Pd precursor for highly efficiently incorporating fine Pd‐metal into supports. An atmospherically stable Pd precursor (Pd‐80) was prepared by thermally promoting the aerobic oxidation of tetrakis(triphenylphosphine)palladium. The physical properties of Pd‐80 were investigated by NMR spectroscopy, SEM, XPS, solvent‐relaxation NMR spectroscopy, and dynamic light scattering (DLS) experiments. We also prepared a cordierite‐supported Pd catalyst (Pd/cordierite) by stirring Pd‐80 and cordierite powder in chloroform at room temperature. Pd/cordierite selectively catalyzed the hydrogenation of various reducible functional groups, including alkynes, azides, nitro groups, olefins, CO2Bn, N‐Cbz, O‐Bn, aromatic ketones, and styrene oxide, in continuous‐flow hydrogenation reactions. The Pd/cordierite‐catalyzed continuous‐flow hydrogenation of nitrobenzene derivatives afforded the corresponding anilines, with catalytic activities maintained for over 250 h of continuous operation with a turnover number (TON) of 61,090.
Negative Affect as a Mediator Between Exposure to Fitspiration and Thinspiration and Disordered Eating Behaviors: An Ecological Momentary Assessment Study
Authors: Christensen Pacella Kara A. , Forbush Kelsie T. , Chen Yiyang , Nation Maegan B. , Cushing Christopher C. , Swinburne Romine Rebecca E. 
Published: September 2024

ABSTRACTObjectiveAlthough social media use, such as Instagram, has been associated with ED pathology, mechanisms connecting social media use to disordered eating behaviors (DEBs) remain largely unevaluated. Based on Dual Process, Tripartite, and Affect Regulation models of ED pathology, we proposed a moderated mediation model evaluating impacts of exposure to fitspiration/thinspiration on Instagram.MethodWe evaluated a hypothesized pathway from exposure to fitspiration/thinspiration (i.e., ED‐salient content) on Instagram to disordered eating mediated by negative affect and tested individual differences in weight bias internalization, trait self‐esteem, and trait self‐comparison as moderators. We recruited 173 undergraduate women who reported engaging in DEBs on average at least once per week over the past 3 months. Participants completed a seven‐day ecological momentary assessment protocol, during which they reported their ED‐salient content exposure on Instagram, affect, and engagement in DEBs.ResultsMultilevel modeling was used to assess moderated mediation. Negative affect partially mediated associations between viewing ED‐salient content and subsequent engagement in objective binge eating and restricting but did not mediate the pathway to purging or excessive exercise. Higher weight bias internalization intensified the association between viewing ED‐salient content and negative affect.DiscussionThe association between viewing ED‐salient content and engaging in objective binge eating and restricting may be a partial consequence of elevated negative affect; however, effects were small. Individuals with higher weight bias internalization may be more vulnerable to negative consequences from viewing ED‐salient content. Findings suggested that reducing negative affect responses (e.g., via emotion regulation) could reduce negative consequences of viewing ED‐salient content.