bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comment tenir compte de la motivation à la prise en charge en milieux de placement ? Réflexions théoriques et opérationnalisation auprès d’une clientèle de mineurs en conflit avec la loi
Authors: Mathys Cécile , N’Zi Madeleine , Brassine Nadège 
Published: November 2023

Cet article a pour objectif d’introduire et d’examiner le concept de motivation à la prise en charge d’une clientèle de mineurs en conflit avec la loi et placés. Premièrement, nous proposons une réflexion théorique destinée à définir la motivation à la prise en charge, concept que nous distinguons de la motivation au traitement. Dans ce cadre, nous passons en revue les deux principaux modèles théoriques associés à la motivation : la théorie de l’auto-détermination et le modèle transthéorique du changement. Deuxièmement, nous analysons la pertinence de ces modèles appliquée à la prise en charge de jeunes en conflit avec la loi en contexte de placement. Troisièmement, nous discutons plus spécifiquement des facteurs environnementaux gravitant autour de la motivation à la prise en charge : le sentiment perçu de coercition, le climat social et l’alliance thérapeutique. Quatrièmement, nous réalisons une recension des instruments de mesure évaluant les différentes facettes de la motivation de jeunes en conflit avec la loi ainsi que les écueils associés pour mesurer la motivation à la prise en charge. Enfin, nous présentons les enjeux de recherche futurs quant à l’intégration de la motivation à la prise en charge au sein des milieux de placement qui accueillent des jeunes en conflit avec la loi.
Enhancing Earth-based Building Materials: Effect of Palm Fibre Reinforcement on Compressive Strength
Authors: Onugba Michael Attah , Omisande Lawrence Ademola , AlhassVan Yunusa Aminu , Abdullahi Abubakar Otu 
Published: November 2023

The rising need for affordable and eco-friendly housing occasioned by a surge in global population growth, the ever-increasing cost of building materials and environmental concerns has been an issue of concern over the last few decades. This has necessitated continuous research and development of affordable and eco-friendly building materials for low- and middle-income earners. This research evaluated the effect of oil palm fibre on the compressive strength of compressed earth blocks. Oil palm fibre was added to the soil matrix at 0%, 0.5%, 1% and 1.5% by weight of laterite. The blocks were cured for 28 days after which they were tested. The results obtained indicate that the addition of palm fibre up to 1% in the matrix increased the compressive strength to a maximum of 1.38N/mm2. Further addition of palm fibre in the matrix resulted in a decrease of the compressive strength. An optimum reinforcement of the blocks with 1% palm fibre is recommended.
Recent Progress in Advanced Catalytic Strategies for C─F Bond Cleavage in Waste Refrigerants: A Review
Authors: Wang Yuting , Yang Zhuang , Xiu Hao , Fan Fan , An Pan , Cui Yongpeng , Wang Yajun , Yao Wenqing 
Published: January 2025

AbstractThe degradation of fluorinated refrigerants, known for their highly stable carbon‐fluorine (C─F) bonds, poses significant environmental and technical challenges. This review addresses these challenges by analyzing two core degradation mechanisms: molecular polarization (MP) and free radical attack (FRA), and exploring their applications in thermal catalytic and photocatalytic processes. MP redistributes electron density to weaken C─F bonds, facilitating adsorption and bond cleavage, while radical attack involves reactive species that directly break chemical bonds. However, both mechanisms have limitations: MP alone may lack the kinetic drive for dissociation, and radical‐based methods often suffer from low selectivity, short radical lifetimes, and the formation of toxic intermediates. The section on thermal catalytic degradation discusses how elevated temperatures enhance bond cleavage through MP, addressing adsorption challenges and accelerating dissociation. The part on photocatalytic degradation focuses on the role of light‐activated processes in generating reactive radicals and facilitating bond breaking, with an emphasis on visible and ultraviolet light‐driven reactions. The review concludes by exploring the potential of hybrid catalytic systems that combine thermal and photocatalytic processes, providing insights into the complementary use of these mechanisms for the degradation of persistent fluorinated compounds.
Dichalcogenides as Emerging Electrocatalysts for Efficient Ammonia Synthesis: A Focus on Mechanisms and Theoretical Potentials
Authors: Choi Jinuk , Lim Hyojung , Surendran Subramani , Lu Xiaoyan , Jin Kyoungsuk , Park Hyunjung , Jung Ho‐Young , Sim Uk 
Published: January 2025

AbstractDeveloping sustainable technologies for ammonia production through electrochemical reactions offers a promising alternative by leveraging renewable energy sources to produce ammonia under ambient conditions. These methods include nitrogen reduction reaction (NRR), nitric oxide reduction reaction (NORR), nitrite reduction reaction (NO2RR), and nitrate reduction reaction (NO3RR). Optimizing energy efficiency (EE) in electrochemical ammonia synthesis has become increasingly crucial as commercialization approaches. Herein, this work offers a comprehensive study of system EE improvements through the theoretical voltage calculations based on pH and the expansion of bifunctional catalysts like transition metal dichalcogenides (TMDs), which can efficiently catalyze the oxygen evolution reaction (OER) and ammonia synthesis. The review summarizes the pH‐dependent redox potential and Pourbaix diagrams for NRR, NO2RR, and NO3RR, offering insights into the potential‐pH regions where nitrogen and nitrogen oxides are reduced to NH3. Incorporating theoretical voltage calculations into system design enables researchers to minimize energy losses better and improve overall performance. Finally, the review wraps up by exploring the roles of TMD catalysts in different reaction mechanisms and identifying potential areas for improvement. The broader impact of this review lies in its potential to transform ammonia production into alignment with global efforts to reduce greenhouse gas emissions.
Achieving over 860 mV Open‐Circuit Voltage in Low‐Ag Wide‐Bandgap Cu(In,Ga)Se2 Solar Cells Through Ion Diffusion and Band Structure Optimization
Authors: Yao Yifeng , Ma Jingyi , Liu Yunfeng , Yang Xiao , Meng He , Liu Fangfang , Zhang Yunxiang , Liu Wei 
Published: January 2025

AbstractWide‐bandgap Cu(In, Ga)Se2 (CIGS) solar cells offer excellent thermal stability and significant potential for tandem applications. However, conventional CdS buffer layers exhibit poor band alignment with wide‐bandgap absorbers, resulting in severe interface recombination losses. Similarly, employing Zn(O,S) alone as a buffer layer leads to insufficient surface inversion, limiting its effectiveness. Here, a tailored interface engineering strategy is introduced using a 30 nm Zn(O,S)/15 nm CdS bilayer structure. The high conduction band value of Zn(O,S) establishes an optimal spike contact with the wide‐bandgap absorber, effectively suppressing interface recombination. Simultaneously, Cd ions diffuse from the modified thin CdS film to the Zn(O,S) layer, which sequentially enhances surface inversion and facilitates efficient carrier extraction in synergy with Zn ions. Additionally, Zn(O,S) offers superior absorber surface cleaning effects, ensuring a more uniform phase and potential distribution. Collectively, these improvements contribute to reduced interface recombination losses and lower reverse saturation current, leading to a power conversion efficiency (PCE) of 15.35% and an open‐circuit voltage (Voc) of 866 mV in a 1.46 eV wide‐bandgap CIGS device, which is the highest Voc in wide bandgap CIGS solar cells with low Ag content [Ag]/([Ag]+[Cu]) (AAC). This work provides critical insights into the development of high‐efficiency wide‐bandgap CIGS solar cells.
Fabricating Open‐Framework Using Polyoxovanadate Clusters for Efficient Removal of Radioactive Cs+ and Sr2+
Authors: Cheng Lin , Li Si‐Yu , Zhang Yu‐Jie , Meng Xin , Wang Ying , Wang Shuaihua , Wang Kai‐Yao 
Published: January 2025

AbstractInnovation of 137Cs+ and 90Sr2+ ion exchangers is achieved through heteroatom‐bridged integration of polyoxovanadate clusters, whose soft Lewis basic nature and large size promote the selective capture of cesium/strontium radionuclides. The radiolytically stable Na6P4V10O34·19H2O (VPO‐1) features an interlinkage of {NaV10O26} clusters and phosphorus bridges, forming nanoscale voids with hydration‐lubricated sodium ions. This structure endows VPO‐1 with remarkable exchange kinetics (k2Cs = 3.774 g mg−1 min−1; k2Sr = 1.376 g mg−1 min−1), equilibrium removal (R > 99.3% within 5–10 min), and maximum capacities (qmCs = 300.32 mg g−1; qmSr = 113.00 mg g−1). The exchange mechanism is illuminated through single‐crystal XRD by revealing cluster‐vacancy pathways and ionic‐radius‐dependent adsorption sites. VPO‐1 exhibits stability across pH = 3–12, with exceptional KdCs and KdSr values above 105 mL g−1, and high selectivity for Cs+ and Sr2+ over various competing ions. These properties enable excellent column filtration performance (R = 99%–100%) for mixed Cs+ and Sr2+ during a 3000 mL test. Deep cleaning of these ions is also possible via suction filtration using an ultra‐thin VPO‐1/PTFE membrane, with high exchange activity (R = 98.8%–99.9%) retained after simple regeneration with 2 m NaCl, offering significant potential for nuclear wastewater treatment applications.
Preparation of Ordered Platinum Nanowires Array with Ultra‐High Length‐Diameter Ratio Using Electrohydrodynamic Jet Printing and Pyrolytic Reduction
Authors: Zhang Fan , Qu Xinghui , Sun Lujing , Zhang Yu , Liang Junsheng 
Published: January 2025

AbstractPlatinum nanowires (Pt‐NWs) and their arrays are critical metallic materials for the fabrication of functional structures and circuit interconnections in microsensors and microelectronic circuits. Currently, the preparation of Pt‐NWs is mainly based on electron beam lithography and electrochemical growth methods, which are hindered by complex process flows, low length‐diameter ratios, and disordered products. In this study, an effective method is proposed to prepare an ordered Pt‐NWs array with ultra‐high length‐diameter ratio using electrohydrodynamic jet (E‐Jet) printing and pyrolytic reduction. The ordered micrometer/sub‐micrometer platinum precursor fibers (Pt‐PFs) are first deposited by E‐Jet printing, then followed by a one‐step heat treatment to facilitate diameter shrinkage of the Pt‐PFs and precursor reduction to produce Pt‐NWs. This method is used to prepare long, straight, and continuous Pt‐NWs with diameters as low as 77 nm and length‐diameter ratios exceeding 104, and ordered Pt‐NWs arrays, grids, and suspended Pt‐NWs are also obtained. This study provides a new method for the controllable preparation of metallic nanostructures, which can be widely used in the manufacturing of high‐performance micro‐nano devices.
Multi‐fold Phase Metasurface Holography Based on Frequency and Hybrid Decoupling Polarizations
Authors: Zhou Hongqiang , Zhao Chongli , He Cong , Jiang Qiang , Wang Hongbo , Zhao Ruizhe , Man Tianlong , Wan Yuhong , Geng Guangzhou , Huang Lingling 
Published: January 2025

AbstractMetasurfaces are artificially intelligent planar optical devices that can realize excellent functions by optimizing the design of nanostructures and arrays. Metasurfaces have become the preferred approach for fabricating integrated and compact optical systems with micro‐ and nano‐scale solutions for realizing multi‐dimensional modulated optical devices. Herein, the realization of multi‐fold phase holography is demonstrated by combining switchable optical frequencies with hybrid circular and linear polarization states. The original holographic phase distribution can be inversely optimized using an adaptive momentum gradient descent algorithm. Furthermore, completely different images can be reconstructed when the phase values are several times the original values. The multi‐fold phase modulation can be achieved by optimizing the structural distribution of the dielectric metasurface with the incident changeable light frequency and decoupled circular and linear polarization. Different polarization combinations enhance the flexibility of multiple holographic modulations. This technology provides new solutions for dynamic multi‐fold beam directional refraction and excitation, orbital angular momentum communication, multi‐fold holographic displays, optical encryption and camouflage, light switching, and shaping.
Numerical Analysis of Magnetohydrodynamics Mixed Convection and Entropy Generation in a Double Lid‐Driven Cavity Using Ternary Hybrid Nanofluids
Authors: Souayeh Basma 
Published: January 2025

AbstractThe present study numerically investigates the effects of a magnetic field on mixed convection flow and entropy generation within a double lid‐driven square cavity filled with a hybrid nanofluid. The flow is induced by two isothermally heated semi‐circles located on the bottom and left walls of the cavity. The cavity is filled with a ternary composition of hybrid nanofluid (aluminum oxide/silver/copper oxide‐water) and is exposed to a uniform magnetic field. The velocity ratio of the moving lids and the radius ratio of the semi‐circles are key parameters in the analysis. The study employs the finite volume method and full multigrid acceleration to solve the coupled continuity, momentum, energy, and entropy generation equations, along with the relevant boundary conditions. Key dimensionless parameters considered include the Hartmann number (0 ≤ Ha ≤ 100), Richardson number (0.01 ≤ Ri ≤ 1), hybrid nanofluid volume fraction (3% ≤ ϕ ≤ 12%), internal semi‐circle radius ratio (β = 0.5 and 1), and velocity ratio (−2 ≤ λ ≤ 2). Results revealed that the optimal heat transfer is achieved for Ri = 0.04, Ha = 100, ϕ = 0%, β = 1, and λ = 0.5 with 63% enhancement. Moreover, the maximum entropy generation rates are obtained for the same parameters with a rate of 47%, reflecting the complex balance of enhanced heat transfer and associated irreversibility's. Results reveal also that heat transfer and entropy generation are a decreasing function of Hartmann number implying a suppress of fluid motion due to the Lorentz force. This study provides a valuable resource and parametric analysis for researchers and engineers, aiding in the design and optimization of thermal management systems for various industrial applications, including heat exchangers, nuclear reactors, and energy systems.
Cyclo‐N9−: a Novel 5/6 Fused Polynitrogen Anion for High Energy Density Materials
Authors: Yuan Xiaofeng , Xu Ze , Gu Haolin , Zhang Tongwei , Xu Yuangang , Lu Ming 
Published: January 2025

AbstractAfter cyclo‐pentazolate anion, a 5/6 fused structure of N9− is constructed, and four novel nitrogen‐rich ionic compounds are assembled on its basis. The results of the quantum calculations revealed an uneven distribution of electrons on cyclo‐N9−, with significant charge density near the N5/N9 atoms and an ADCH charge of −0.425. The relative strength of chemical bonds is assessed through bond order analysis, which is further supplemented by transition state theory and ab initio molecular dynamics, ultimately leading to the identification of the decomposition pathways of cyclo‐N9−. The aromaticity of cyclo‐N9− and its individual sub‐rings is cleverly validated through a combination of NICS_ZZ and ICSS methods. Among the eight systems, cyclo‐N9− forms hydrogen bonds with other cations, and IGMH analysis revealed significant LP‐π and π–π stacking interactions between [N7H4+] and cyclo‐N9−, both of which enhance system stability. The theoretical energy densities in all systems are at the forefront in the currently emerging nitrogen‐rich compounds. Attributed to its extraordinarily high enthalpy of formation, the detonation performance of [N7H4+] [N9−] is particularly excellent. However, [NH3OH+] [N9−] exhibits better stability and most exciting performance, making it a highly promising candidate with application potential.
(NH4)2Cd2Cl3F3 and (NH4)2Cd2Br3F3: The First Fluoride‐Containing d10 Metal Mixed Halides Exhibiting Superior Ultraviolet Nonlinear Optical Properties
Authors: Choi Seunghun , Li Yang , Kuk Yunseung , Ok Kang Min 
Published: January 2025

AbstractIn the search for new ultraviolet (UV) nonlinear optical (NLO) materials, two novel cadmium mixed halide compounds, (NH4)2Cd2Cl3F3 and (NH4)2Cd2Br3F3, are successfully synthesized via hydrothermal methods. These compounds crystallize in the noncentrosymmetric (NCS) space group, R32, and are composed of distorted octahedral [CdX3F3] (X═Cl or Br) units, which extend into a 3D framework. Remarkably, both compounds demonstrate strong second‐harmonic generation (SHG) efficiencies—3.0 and 8.0 times that of KH2PO4 for the Cl‐ and Br‐containing analogs, respectively—with phase‐matching behavior observed. The SHG efficiency is attributed to the highly distorted coordination environment of the polarizable d10 Cd2+ ions, with (NH4)2Cd2Br3F3 benefiting further from Br's greater polarizability. Furthermore, these compounds exhibit wide bandgaps exceeding 4.2 eV, making them the first d10 metal mixed halide systems incorporating fluoride that are suitable for UV NLO applications. With UV absorption cut‐off edges as short as 203 nm for (NH4)2Cd2Cl3F3 and 243 nm for (NH4)2Cd2Br3F3, these materials represent a significant advancement in the development of UV‐transparent NLO materials. This study introduces a novel synthetic strategy for the design of d10 mixed halide systems with enhanced optical properties, offering promising candidates for future UV NLO technologies.
Thermal acclimation of tree species in a tropical Andean city: Exploring the role of species origin and thermal niche
Authors: Cuervo‐Gómez María , Melgarejo Luz Marina , Salgado‐Negret Beatriz 
Published: January 2025

AbstractPremiseThe warmer and drier atmospheric conditions of urban environments challenge plant performance to different extents based on a species' ability to acclimate to the conditions. We evaluated the influence of species origin and thermal niche on the acclimation of leaf traits and shifts in the occupation of the functional trait space of 10 tree species growing in two environmentally contrasting sites in Bogotá, Colombia.MethodsWe measured six leaf traits per species in both sites and used generalized linear models to evaluate the influence of origin and thermal niche on acclimation of leaf traits and t‐tests to analyze shifts in the occupation of the functional trait space.ResultsSpecies origin predicted thermal tolerance and morphological trait acclimation to warmer conditions. Although exotic species decreased thermal tolerance at the warmer site, species from both origins acclimated traits consistently. Shifts in the occupation of the functional trait space varied between origins; warmer conditions reduced the size of the functional trait space of exotics and increased the phenotypic similarity of natives. Thermal tolerance acclimation and changes in functional trait space varied across species. Finally, thermal niche metrics were uncoupled from species origin and failed to explain the acclimation capacity of the studied species.ConclusionsAlthough species origin influenced acclimation to warmer conditions, the effect of origin was not related to species' thermal niches. Our results provide crucial information for decision‐makers involved in designing urban and peri‐urban green spaces that can withstand climate change.
DBU‐Mediated Reaction of 3‐Chlorooxindole and 9‐Xanthyl Fluorene for Synthesis of 3‐Arylidene Oxindole
Authors: Purahong Nitchakan , Teerawatananond Thapong , Chotsaeng Nawasit , Janthakit Pattarapapa , Nalaoh Phattananawee , Promarak Vinich , Kuhakarn Chutima , Meesin Jatuporn 
Published: January 2025

AbstractThis work reports a new route for the synthesis of 3‐(9H‐fluoren‐9‐ylidene)indolin‐2‐one derivatives via the reaction of 3‐chlorooxindoles and O‐ethyl S‐(9H‐fluoren‐9‐yl) carbonodithioates mediated by 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU). The reactions readily proceeded at room temperature, enable a collection of 3‐alkenyl oxindoles to be prepared within a short reaction time (15 minutes). The 3‐alkenyl oxindoles can be easily converted to 3‐fluorenyl oxindoles by NaBH4 reduction.
Sabatier Principle Inspired Bifunctional Alloy Interface for Stable and High‐Depth Discharging Zinc Metal Anodes
Authors: Yu Jingya , Song Zizheng , Qi Qi , Hui Xiaobin , Ma Yiyuan , Chen Feiyang , Qi Kai , Meng Qi , Li Renjie , Zhuang Lyuchao , Cheung Chan Kang , Chen Zibin , Xia Bao Yu , Xu Zheng‐Long 
Published: January 2025

AbstractAchieving stable Zn anodes that can effectively couple with Zn‐free cathodes is essential for advancing high‐performance Zn metal batteries. Here, we propose a Sabatier principle inspired bifunctional transition‐metal (TM) interface to enable homogeneous Zn dissolution during discharging and dendrite‐free Zn deposition during charging. Among various TM‐coated Zn (TM@Zn) electrodes, Cu@Zn exhibits the highest reversibility and structural stability, attributed to the optimal interaction between Cu and Zn. The heteroatomic interaction‐dependent electrochemical performance parallels the Sabatier principle. Morphological analyses reveal that bare Zn anodes display detrimental etching pits during stripping, which is different from the uniform dissolution for Cu@Zn electrodes. During subsequent plating, the conductive interface serves as a secondary current collector for uniform Zn deposition in Cu@Zn, thus demonstrating a bifunctional nature. Atomic observations disclose the working mechanisms of this interface as a gradual phase transition from Cu to CuZn5 during cycling. The Cu@Zn anodes exhibit an ultralong cycling lifespan of over 8000 h at a low current of 1 mA cm−2 and over 250 h at a high depth of discharge of 80 %. They also demonstrate practical feasibility by maintaining 88.7 % capacity retention after 1000 cycles in Cu@Zn||VO2 full cells. This work provides new insights into the Sabatier chemistry inspired bifunctional layers for Zn metal battery system.
Paired Photoproduction of H2O2 and 3,4‐Dihydroisoquinoline Over Covalent Pyrene‐(Thio)urea Frameworks with Electron Push‐Pull Effect
Authors: Yang Tao , Kong Fantao , Chen Yue , Kong Aiguo , Cui Xiangzhi , Shi Jianlin 
Published: January 2025

AbstractPairing photocatalytic 1,2,3,4‐tetrahydroisoquinoline semi‐dehydrogenation reaction (THIQ‐SDR) with two‐electron oxygen reduction reaction (2e− ORR) is a green solar to chemical strategy by simultaneously utilizing the photo‐excited electrons and holes. However, it is still short of high‐efficiency photocatalyst to drive two reactions above. In the present work, crystalline pyrene‐thiourea/urea covalent organic frameworks (COF−Py−S and −O) were synthesized and demonstrated as high‐performance metal‐free photocatalysts. In particular, COF−Py−S exhibited higher 2e− ORR to H2O2 yield rate of ~19 mmol g−1 h−1 under visible light and finally solid H2O2 products (Na2CO3 ⋅ 1.5H2O2) was collected after long‐time irradiation. Under natural sunlight conditions, the H2O2 production rate over COF−Py−S further increased to ~51 mmol g−1 h−1, among the best COF photocatalysts. COF−Py−S also showed high THIQ‐SDR conversion (~100 %) with 3,4‐dihydroisoquinoline (DHIQ) selectivity of ~92 %. Theoretical calculations reveal stronger electron push‐pull effect of COF−Py−S than COF−Py−O, enhancing its photoinduced charge carries, and a four‐step 2e− ORR mechanism with thiourea as the active sites has been confirmed as well as the mechanism of THIQ‐SDR to DHIQ, featuring lower energy barriers for O2 adsorption and *HOOH desorption over thiourea units. This work provides a paired photosynthesis strategy of H2O2 and DHIQ over high‐efficiency pyrene‐(thio)urea COF photocatalysts with electron push‐pull effect.