bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pourquoi n’ont-ils pas appris à lire ? Analyse transculturelle des facteurs de vulnérabilité et de protection face à l’illettrisme
Authors: Sarot Adeline , Chomentowski Martine , Falissard Bruno , Moro Marie Rose 
Published: November 2017

En France, en 2015, 4,1% des adolescents de 17 ans sont en situation d’illettrisme et 10% peuvent être considérés comme handicapés par des difficultés en lecture. L’illettrisme touche particulièrement les élèves issus de l’immigration. L’objectif de cette recherche était d’explorer rétrospectivement l’histoire scolaire et familiale de ces adolescents, pour identifier des facteurs de vulnérabilité et de protection. L’analyse qualitative par théorisation ancrée des entretiens semi-directifs individuels menés avec 23 adolescents, leurs parents et enseignants, a fait ressortir une altération de la fonction parentale, en lien avec des conflits intergénérationnels non élaborés, particulièrement autour de la question scolaire. Ils entraînent chez l’enfant un sentiment d’insécurité et d’illégitimité dans le cadre scolaire. Mais l’échec scolaire semble aussi constituer une stratégie inconsciente de réparation et de métissage, que le lycée professionnel est propice à mettre en œuvre. Les résultats font aussi ressortir l’importance de la dimension affective de la relation pédagogique et les besoins de formation des professionnels sur ce plan. Ils offrent d’intéressantes perspectives de prévention, telles que les médiations famille-école, pour favoriser l’instauration d’une nécessaire alliance pédagogique.
Les caractéristiques des tuteurs de résilience des étudiants en soins infirmiers vulnérabilisés
Authors: Morenon Olivier , Anaut Marie , Michallet Bernard 
Published: November 2017

La formation infirmière semble vulnérabiliser les étudiants, les conduisant parfois à souffrir de stress ou de burnout . Néanmoins, la majorité réussit cette formation. Cette reprise positive de l’apprentissage, malgré un contexte d’études parfois délétère, interroge sur le potentiel vulnérabilisant de cette scolarité, et sur de possibles mécanismes résilients favorisés entre autres par des tuteurs de résilience. Cet article de recherche en sciences de l’éducation commencera par une synthèse des résultats de publications sur les facteurs de stress voire de burnout de ces étudiants. Nous verrons en quoi cette scolarité peut être reliée au concept de vulnérabilité et de résilience. Nous présenterons ensuite les résultats et l’analyse thématique de 30 entretiens semi-directifs dont les objectifs ont été : de vérifier le potentiel vulnérabilisant de cette formation, de déterminer si des processus résilients peuvent être observés, et de cerner les caractéristiques des tuteurs de résilience de ces étudiants fragilisés. Après l’exposé des résultats et de l’analyse, nous discuterons des liens entre vulnérabilité, syndrome de stress post-traumatique et burnout . Nous approfondirons le concept de compassion comme l’un des attributs prédominants des tuteurs. Enfin, concernant la posture relationnelle de certains professionnels, nous verrons en quoi elle pourrait relever d’un accompagnement professionnel de la résilience.
Efficiency of Bioelectric Impedance Analysis as an Evaluation Method of Skeletal Muscle Mass After Gastrectomy
Authors: Saito Motonobu , Seshimo Akiyoshi , Miyake Kunitomo , Yamaguchi Ryusuke , Okamoto Takahiro 
Published: November 2017

Objective:
This study measured skeletal muscle mass (SMM) in postoperative gastric cancer patients, to compare SMM to traditional postoperative assessment based on anthropomorphic measures and blood tests, and evaluated the methods of SMM measurement.

Summary of Background Data:
SMM, which helps to maintain general health and quality of life, is very important. Measurement of total psoas major muscle area (TPA) by computed tomography imaging has recently been reported to be a useful index of SMM.

Methods:
This retrospective study included 92 patients who underwent distal gastrectomy for gastric cancer. SMM was measured by TPA index (computed tomography measurement of TPA / square of height) and bioelectric impedance analysis (BIA). Patients were divided into short-term (&lt;3 years) and long-term (≥3 years) postoperative follow-up groups. SMM and traditional postoperative assessment, as well as body mass index, albumin, hemoglobin, and total cholesterol, were compared between the 2 groups. The correlations between the TPA index and the SMM of BIA and traditional postoperative assessment were examined by simple regression analysis.

Results:
The SMM of BIA was 24.1 ± 4.1 kg in the short-term and 22.0 ± 4.7 kg in the long-term group (P = 0.02), and TPA index was 783.4 ± 166.9 mm2/m2 in the short-term and 687.5 ± 167.2 mm2/m2 in the long-term group (P = 0.01), whereas there were no significant differences in traditional postoperative assessment. On simple regression analysis, TPA index showed the strongest correlation with SMM of BIA (R = 0.56).

Conclusions:
Measurement of SMM is essential because the traditional postoperative assessments do not reflect the change in SMM. And SMM measurement, especially by BIA, would be useful.
Biomimetic Mineralized Organic–Inorganic Hybrid Scaffolds From Microfluidic 3D Printing for Bone Repair
Authors: Yang Lei , Li Wenzhao , Ding Xiaoya , Zhao Yuanjin , Qian Xiaoyun , Shang Luoran 
Published: October 2024

AbstractBone defect is a common clinical orthopedic disease. The trend in this field is to develop tissue engineering scaffolds with appropriately designed components and structures for bone repair. Herein, inspired by the organic and inorganic components of bone matrix and the natural biomineralization mechanism, a MgSiO3@Fe3O4 nanoparticle composite polycaprolactone (PCL) hybrid mineralized scaffold for bone repair is developed by microfluidic 3D printing. The incorporation of MgSiO3@Fe3O4 within the PCL scaffold can effectively improve the bioactivity. In addition, a biomimetic mineralized layer is prepared on the surface of the scaffold, which endowed it with unique microstructural characteristics, enhanced cell adhesion and osteogenic activity, and thus improved the bone repair performance. Owing to these advantages, both in vivo and in vitro experiments have demonstrated that the designed scaffold has outstanding biocompatibility and bone repair performance. These features indicate that the organic–inorganic biomineralized hybrid scaffold can be a potential bone graft substitute for clinical bone repair.
Dual Additive‐Assisted Layer‐by‐Layer Processing for 19.59% Efficiency Quasi‐Bulk Heterojunction Organic Solar Cells
Authors: Zhang Fenghua , Dai Tingting , Li Xiong , Li Mandi , Liu Yang , Wang Dan , Xu Denghui , Hu Rong 
Published: October 2024

AbstractThe ideal vertical phase separation active layer morphology is crucial for the photoelectric conversion of organic solar cells. In this work, a layer‐by‐layer sequential deposition method is used to prepare D18/L8‐BO‐based organic solar cells and a dual additives strategy is adopted to construct the ideal active layer. Additive DIM regulates the crystallization of the D18 layer, and additive DIO induces L8‐BO to diffuse into the interior of the D18 layer to form a vertical composition distribution with large donor/acceptor interpenetrated regions. The improvement of active layer induced by DIM and DIO dual additives promote exciton generation and dissociation, shorten charge transfer distance, and improve carrier dynamics. With improved charge transport performance and suppressed carrier recombination, the short‐circuit current density and fill factor of the D18/L8‐BO quasi‐bulk heterojunction organic solar cells are improved simultaneously, and the power conversion efficiency is boosted significantly from 18.21% to 19.59%. Moreover, the improved photovoltaic performance is further verified in D18/Y6 and PM6/L8‐BO‐based organic solar cells, which implies the generalizability of the dual additive‐assisted layer‐by‐layer ‐sequential deposition method.
Biological Characterization of Ti6Al4V Additively Manufactured Surfaces: Comparison Between Ultrashort Laser Texturing and Conventional Post‐Processing
Authors: Sartori Maria , Bregoli Chiara , Carniato Melania , Cavazza Luca , Maglio Melania , Giavaresi Gianluca , Biffi Carlo Alberto , Fiocchi Jacopo , Gruppioni Emanuele , Tuissi Ausonio , Fini Milena 
Published: October 2024

AbstractAmong Additive Manufacturing (AM) technologies, Laser Powder Bed Fusion (LPBF) has made a great contribution to optimizing the production of customized implant materials. However, the design of the ideal surface topography, capable of exerting the best biological effect without drawbacks, is still a subject of study. The aim of the present study is to topographically and biologically characterize AM‐produced Ti6Al4V ELI (Extra Low Interstitial) samples by comparing different surface finishing. Vertically and horizontally samples are realized by LPBF with four surface finishing conditions (as‐built, corundum‐sandblasted, zirconia‐sandblasted, femtosecond laser textured). Bioactivity in vitro tests are performed with human osteoblasts evaluating morphology, metabolic activity, and differentiation capabilities in direct contact with surfaces. Scanning electron microscope and profilometry analysis are used to evaluate surface morphology and samples’ roughness with and without cells. All tested surfaces show good biocompatibility. The influence of material surface features is evident in the early evaluation, with the most promising results of morphological study for laser texturing. Deposition orientations seem to influence metabolic activities, with XZ orientation more effective than XY. Current data provide the first positive feedback on the biocompatibility of laser texturing finishing, still poorly described in the literature, and support the future clinical development of devices produced with a combination of LPBF and different finishing treatments.
A Single‐Cell RNA Sequencing Guided Multienzymatic Hydrogel Design for Self‐Regenerative Repair in Diabetic Mandibular Defects
Authors: Lin Peihua , Qian Zhouyang , Liu Shanbiao , Ye Xin , Xue Pengpeng , Shao Yangjie , Zhao Jing , Guan Yunan , Liu Zhichao , Chen Yuhua , Wang Qiyue , Yi Zhigao , Zhu Mingjian , Yu Mengfei , Ling Daishun , Li Fangyuan 
Published: October 2024

AbstractConventional bone tissue engineering materials struggle to reinstate physiological bone remodeling in a diabetic context, primarily due to the compromised repolarization of proinflammatory macrophages to anti‐inflammatory macrophages. Here, leveraging single‐cell RNA sequencing (scRNA‐seq) technology, the pivotal role of nitric oxide (NO) and reactive oxygen species (ROS) is unveiled in impeding macrophage repolarization during physiological bone remodeling amidst diabetes. Guided by scRNA‐seq analysis, we engineer a multienzymatic bone tissue engineering hydrogel scaffold (MEBTHS) composed is engineered of methylpropenylated gelatin hydrogel integrated with ruthenium nanozymes, possessing both Ru0 and Ru4+ components. This design facilitates efficient NO elimination via Ru0 while simultaneously exhibiting ROS scavenging properties through Ru4+. Consequently, MEBTHS orchestrates macrophage reprogramming by neutralizing ROS and reversing NO‐mediated mitochondrial metabolism, thereby rejuvenating bone marrow‐derived mesenchymal stem cells and endothelial cells within diabetic mandibular defects, producing newly formed bone with quality comparable to that of normal bone. The scRNA‐seq guided multienzymatic hydrogel design fosters the restoration of self‐regenerative repair, marking a significant advancement in bone tissue engineering.
Force‐Induced Ultraviolet C Luminescence of Pr3+‐Doped Sr2P2O7 for X‐Ray Dosimetry
Authors: Li Huimin , Yang Yanmin , Li Pei , Peng Dengfeng , Li Leipeng 
Published: October 2024

AbstractMechanoluminescent materials have broad application prospects in advanced displays, stress imaging, and anti‐counterfeiting owing to their ability to convert mechanical stimuli into light. However, most previous studies have focused on the visible and near‐infrared regions. Although natural ultraviolet C (UVC) light is nearly absent on the Earth's surface, it plays an important role in many fields. Therefore, the development of smart materials capable of emitting UVC mechanoluminescence (ML) and expanding the application scenarios of UVC ML are significant but challenging. Here the ML property of Sr2P2O7:Pr3+ is examined, which stems from the 5d→4f transition of Pr3+ and is located over the UVC region. The peak wavelength of the UVC ML of Sr2P2O7:Pr3+ is ≈230 nm, which is, to the best of this knowledge, the shortest ML wavelength reported to date. It is further demonstrated that the UVC ML of Sr2P2O7:Pr3+ is associated with trapped charge carriers and can be conveniently regulated by adjusting the X‐ray excitation time. Relying on this unique characteristic, the potential of the UVC ML of Sr2P2O7:Pr3+ as an indicator of the X‐ray radiation dose is demonstrated. This study enriches the family of mechanoluminescent materials and expands the available wavelength of ML to the UVC region.
Single‐Nanometer Spinel with Precise Cation Distribution for Enhanced Oxygen Reduction
Authors: Shang Long , Ni Youxuan , Wang Yuankun , Yang Wenxuan , Wang Linyue , Li Haixia , Zhang Kai , Yan Zhenhua , Chen Jun 
Published: October 2024

AbstractDesigning spinel nanocrystals (NCs) with tailored structural composition and cation distribution is crucial for superior catalytic performance but remarkably challenging due to their intricate nature. Here, an aggregation growth restricted hot‐injection method is presented by meticulously investigating the fundamental nucleation and aggregation‐driven growth kinetics governing spinel NC formation to address this challenge. Through controlled collision probability of nuclei during growth, this approach enables the synthesis of spinel NCs with unprecedented, single nanometer (1.2 nm). Single‐nanometer CoMn2O4 spinel via this method exhibits a highly tailored structure with a maximized population of highly active octahedral Mn atoms, thereby optimizing oxygen intermediate adsorption during oxygen reduction reaction (ORR). Consequently, it exhibits a remarkable half‐wave potential of 0.88 V in ORR and leads to a superior power density (170.9 mW cm−2) in zinc–air battery, outperforming commercial Pt/C and most reported spinel oxides, revealing a clear structure–property relationship. This structure design strategy is readily adaptable for the precise synthesis and engineering of various spinel structures, opening new avenues for developing advanced electrocatalysts and energy storage materials.
3D Cell Culture on Hierarchical Porous Soft Aerogel Structures Printed by DIW Process from Dual Network Gel Ink
Authors: Lopez Navas Javier , Suen Chin Yan , Liu Zhang , Mostrales Deo Charis , Yeung King Lun 
Published: October 2024

AbstractAdvances in additive manufacturing technologies have enabled the fabrication of intricate bioscaffolds with tailored geometry, porosity, and material composition, offering new possibilities in biomedical engineering, drug screening, and cell scaffold applications. This study introduces a novel printable flexible soft ceramic material prepared by a combination of silica sol–gel processing and crosslinking of a dissolvable polyvinyl‐trimesic acid polymeric network. The material's printability is showcased by creating 3D 90° grid scaffolds using an in‐house extrusion‐based printer, demonstrating a flexible response to compressive stress with minimal deformation over multiple cycles. Supercritical extraction and drying transform the printed structure into a highly porous, ultralow‐density scaffold for cell culture. The MDCK cells cultured within the 3D biocompatible ceramic scaffold exhibit uniform growth and proliferation, maintaining viability for up to 35 days. When exposed to the environmental toxin, mercury, MDCK cells in a 2D culture show susceptibility at a low lethal concentration (0.075 mg·L−1), while the 3D cell culture displays enhanced tolerance (4.0 mg·L−1). It emphasizes the significance of the 3D microenvironment in mimicking physiological conditions more accurately, enabling a more precise assessment of environmental toxicants.
Tunable Ambipolar Transport in a 2D Kagome Semiconductor
Authors: Zhu Shuangxing , Liu Hao , Wu Jiaxin , Mei Junning , Zhang Ruan , Liu Ying , Chen Yu , Watanabe Kenji , Taniguchi Takashi , Meng Jianqiao , Cai Xinghan 
Published: October 2024

AbstractThe interference of electronic wavefunctions within a Kagome lattice can result in a flat band structure, where low‐energy electrons exhibit highly correlated behavior, facilitating exploration of interactions among intriguing electronic states. However, the inherent high carrier density in most known Kagome materials often hampers the manipulation of these quantum phenomena through conventional means, such as gate voltage. In this work, a unique tunability in the electrical and optoelectronic properties of exfoliated Nb3I8, a 2D semiconductor featuring a “breathing” Kagome lattice is uncovered. Characterization via temperature‐dependent ARPES confirms its semiconducting nature with a flat band structure. Experimental results from bias and gate voltage dependent transport measurements on thin film Nb3I8 transistor devices demonstrate ambipolar conductance. Notably, these findings reveal a broadband photoresponse in the device, spanning from visible to near infrared wavelengths (532 −1100 nm), with the photocurrent showing gate‐dependent characteristics that mirror the dark current's ambipolar nature. This observation marks the first instance of ambipolar transport in a Kagome semiconductor, opening up exciting new avenues for electronic and optoelectronic device development.
Modular Plasmonic Nanopore for Opto‐Thermal Gating
Authors: Douaki Ali , Weng Shukun , Lanzavecchia German , Sapunova Anastasiia , Stuber Annina , Nanni Gabriele , Nakatsuka Nako , Tsutsui Makusu , Yokota Kazumichi , Krahne Roman , Garoli Denis 
Published: October 2024

AbstractSolid‐state nanopore gating inspired by biological ion channels is gaining increasing traction due to a large range of applications in biosensing and drug delivery. Integration of stimuli‐responsive molecules such as poly(N‐isopropylacrylamide) (PNIPAM) inside nanopores can enable temperature‐dependent gating, which so far has only been demonstrated using external heaters. In this work, plasmonic resonators are combined inside the nanopore architecture with PNIPAM to enable optical gating of individual or multiple nanopores with micrometer resolution and a switching speed of a few milliseconds by thermo‐plasmonics effects. A temperature change of 40 kelvin per millisecond is achieved and demonstrates the efficacy of this method using nanopore ionic conductivity measurements that enable selective activation of individual nanopores in an array. Moreover, the selective gating of specific nanopores in an array can set distinct ionic conductance levels: low, medium, and high (i.e., “0,” “1,” and “2”), which can be exploited for logical gating with optical signal control. Such selective optical gating in nanopore arrays marks a breakthrough in nanofluidics, as it paves the way toward smart devices that offer multifunctional applications including biosensing, targeted drug delivery, and fluidic mixing.
Dual C2 Synthon Strategy for the Synthesis of Pyrimidines: Copper‐Catalyzed Aerobic α,β‐C(sp3)−H Bond Difunctionalization of Tertiary Alkylamines
Authors: Putta Ramachandra Reddy , Hong Junhwa , Choi Seung Hyun , Lee Jinwoo , Lee Honghui , Lee Seok Beom , Hong Suckchang 
Published: October 2024

AbstractHerein, we describe a two‐component methodology developed for the synthesis of pyrimidine derivatives using tertiary alkylamines and amidines. Tertiary alkylamines serve as dual C2 synthons through copper‐catalyzed aerobic difunctionalization of the α,β−C(sp3)−H bonds. The process operates under mild conditions and uses atmospheric oxygen as the oxidant. Notably, by this methodology yields up to 85% yields are obtained and a broad substrate scope is shown. Mechanistic studies indicate that the annulation proceeds via a radical‐mediated oxidation and C−N bond coupling process. This approach provides a pathway for synthesizing various heterocycles by employing tertiary alkylamines as dual C2 synthons.
Revisiting the Synthetic Utility of 4,5‐Dehydro[2.2]paracyclophane
Authors: Taguchi Jumpei , Omoto Yuta , Uto Konami , Tabuchi Hitomi , Uekusa Hidehiro , Niwa Takashi , Hosoya Takamitsu 
Published: October 2024

Abstract4,5‐Dehydro[2.2]paracyclophane, an aryne species of [2.2]paracyclophane ([2.2]PCP) was reported more than half a century ago. However, despite its potential usefulness for preparing [2.2]PCP derivatives, this species is rarely considered in synthetic applications, probably because the efficiency of aryne generation and reaction with arynophiles are low under harsh reaction conditions of classical methods involving precursors. We have prepared o‐iodoaryl triflate‐ and o‐silylaryl triflate‐type precursors and achieved generation of 4,5‐dehydro[2.2]PCP, which reacted with a diverse range of arynophiles to afford functionalized [2.2]PCP derivatives, including [2.2]PCP‐fused π‐extended polyaromatics. Our results highlight the synthetic utility of the historically overlooked 4,5‐dehydro[2.2]PCP intermediate.
Systematic review of musculoskeletal ultrasound learning methodologies
Authors: Vogt Amber J. , Mayer Robert Samuel 
Published: October 2024

AbstractIntroduction/PurposeAs the frequency and morbidity of musculoskeletal (MSK) disorders increase, the use of MSK ultrasound has become an important diagnostic and procedural tool. This has amplified the importance of quality MSK ultrasound training for medical professionals. This systematic review evaluated and compared peer‐reviewed journal articles on learning methodologies for MSK ultrasound training.MethodsThirty‐three articles met inclusion and exclusion criteria and were evaluated.ResultsResults showed a lack of randomised studies that compared learning methodologies.ConclusionThere was wide variability of methodology used based on educational and institutional needs. Further randomised control trials need to be conducted to ascertain best educational practices.
Synthesis and Characterization of Monomeric Triarylbismuthine Oxide
Authors: Kuziola Jennifer , Moon Hye Won , Leutzsch Markus , Nöthling Nils , Béland Vanessa A. , Cornella Josep 
Published: October 2024

AbstractThe synthesis and isolation of a bismuth‐based analogue of the venerable triphenylphosphine oxide (Ph3PO) has remained a chimera to synthetic chemists for many years, due to its predicted high reactivity and instability. Through the hydrolysis of a cationic fluorotriarylbismuthonium(V) salt, we report here the isolation of unique hydroxytriarylbismuth(V) complexes, which served as precursor for the formation of the elusive monomeric triarylbismuthine oxide Dipp3Bi=O. Combined spectroscopic, crystallographic and computational studies provided insight into the bonding situation of the first monomeric triorganobismuth oxide complex. The Dipp3Bi=O and Mes3BiO⋅LiBArF complex exhibits O‐atom transfer reactivity, an uncommon reactivity feature for Ar3Pn=O.