bluuebunny/crossref_metadata_2025_split huggingface dataset:
Presentación del Dosier Políticas de la mirada
Authors: Cámara Mario , Josiowicz Alejandra 
Published: July 2017

http://dx.doi.org/10.5007/2176-8552.2016n21p11Presentación del dosier Políticas de la mirada. Intersecciones entre literatura y fotografía. “La fotografía y la literatura son, probablemente, los medios de inscripción más determinantes en la conformación de los modelos epistemológicos y representacionales alrededor de los cuales se estructuró el siglo veinte”
A wind proxy based on migrating dunes at the Baltic coast: statistical analysis of the link between wind conditions and sand movement
Authors: Bierstedt Svenja E. , Hünicke Birgit , Zorita Eduardo , Ludwig Juliane 
Published: July 2017

Abstract. We statistically analyse the relationship between the structure of migrating dunes in the southern Baltic and the driving wind conditions over the past 26 years, with the long-term aim of using migrating dunes as a proxy for past wind conditions at an interannual resolution. The present analysis is based on the dune record derived from geo-radar measurements by Ludwig et al. (2017). The dune system is located at the Baltic Sea coast of Poland and is migrating from west to east along the coast. The dunes present layers with different thicknesses that can be assigned to absolute dates at interannual timescales and put in relation to seasonal wind conditions. To statistically analyse this record and calibrate it as a wind proxy, we used a gridded regional meteorological reanalysis data set (coastDat2) covering recent decades. The identified link between the dune annual layers and wind conditions was additionally supported by the co-variability between dune layers and observed sea level variations in the southern Baltic Sea. We include precipitation and temperature into our analysis, in addition to wind, to learn more about the dependency between these three atmospheric factors and their common influence on the dune system. We set up a statistical linear model based on the correlation between the frequency of days with specific wind conditions in a given season and dune migration velocities derived for that season. To some extent, the dune records can be seen as analogous to tree-ring width records, and hence we use a proxy validation method usually applied in dendrochronology, cross-validation with the leave-one-out method, when the observational record is short. The revealed correlations between the wind record from the reanalysis and the wind record derived from the dune structure is in the range between 0.28 and 0.63, yielding similar statistical validation skill as dendroclimatological records.
La importancia de la contabilidad electrónica en el currículum
Authors: Lee Pérez Pedro 
Published: July 2017

<p>El presente artículo habla sobre la contabilidad electrónica en el sistema tributario de México. Esto es importante para los contribuyentes a partir de 2014, porque obliga a las personas físicas y morales del país a llevar el registro de la contabilidad en medios electrónicos y su envío periódico a través del buzón tributario del Servicio de Administración Tributaria (SAT). El objetivo de este artículo es argumentar la necesidad de incluir la contabilidad electrónica en el currículum de la Licenciatura en Contaduría Pública, al considerar que los perfiles de egreso de la mayoría de las universidades, aún siguen el desarrollo de las competencias tecnológicas que exigen hoy en día las obligaciones tributarias.</p><p>Realidad y Reflexión Año 17, No 45, Enero-Junio 2017: 8-16</p>
Sepsis epidemiology and outcome in the paediatric intensive care unit of Vilnius University Children’s Hospital
Authors: Bobelytė Odeta , Gailiūtė Ieva , Zubka Vytautas , Žilinskaitė Virginija 
Published: July 2017

Research was carried out at the paediatric intensive care unit (paediatric ICU) of the Children’s Hospital, affiliate of Vilnius University Hospital Santariškių klinikos.
Background. Being the most common cause of children’s death, sepsis is a challenge for most physicians. In order to improve the outcomes, it is important to know the aetiology and peculiarities of sepsis in a particular region and hospital. The aim of this study was to analyse the outcomes of sepsis in a paediatric intensive care unit and their relation with patients’ characteristics and causative microorganisms.
Materials and Methods. A retrospective analysis of the Sepsis Registration System in Vilnius University Children’s hospital was started in 2012. From 2012 to 2015, we found 529 sepsis cases in our hospital, 203 of which were found to be fulfilling all of the inclusion criteria (patient’s age >28 days on admission, taken blood culture/positive PCR test, need for paediatric ICU hospitalization) and were included in the final analysis.
Abbreviations:
ICD – international disease classification
PCR – polymerase chain reaction
Results. Sepsis made 4% of all patients of the paediatric ICU in the period from 2012 to 2015 and caused 32% of deaths in the unit. Paediatric mortality reached 14% of all sepsis cases in our analysis, the majority of them due to hospital-acquired sepsis that occurred in patients suffering from oncologic or hematologic diseases. Another significant part of the patients that did not survive were previously healthy with no co-morbidities. The most common microorganism in lethal community-acquired cases was N. meningitidis and in hospital-acquired sepsis – Staphylococcus spp. Multi-drug resistance was observed, especially in the cases of hospital-acquired sepsis.
Conclusions. A large percentage of lethal outcomes that occur in the paediatric ICU are due to sepsis. The majority of lethal cases of sepsis occur in patients suffering from chronic co-morbidities, such as oncologic, hematologic, neurologic, and others.
L’intérêt et l’engagement syndical des travailleuses de l’industrie de la construction
Authors: LEDUC Caroline , HOULFORT Nathalie , LAURENT François-Albert 
Published: July 2017

La participation syndicale des femmes demeure un enjeu important, malgré la présence accrue de celles-ci au sein de différentes instances syndicales. Il est soulevé que l’intérêt des femmes pour le syndicalisme accuse un certain retard, comparativement à celui que lui accordent les hommes, et que ce retard est particulièrement marqué dans le milieu de la construction. Le présent article vise à tester un modèle théorique des facteurs expliquant l’intérêt des travailleuses de la construction pour l’engagement syndical. Une étude corrélationnelle a été réalisée auprès de 230 travailleuses de la construction au Québec afin de déterminer le rôle de facteurs organisationnels, interpersonnels et individuels dans le fait qu’elles sont intéressées à s'engager syndicalement. Les résultats suggèrent que l’intérêt des travailleuses de la construction pour l’implication syndicale est multifactoriel. Entre autres, il semble que l’implication actuelle, les connaissances syndicales et le sentiment d’efficacité personnelle de la travailleuse jouent un rôle important dans son désir de s’impliquer. Les résultats obtenus permettent de dégager des pistes d’action que les organisations syndicales pourraient mettre sur pied afin d’inciter plus de femmes à s’impliquer dans leur syndicat.
The Cribellate Nanofibrils of the Southern House Spider: Extremely Thin Natural Silks with Outstanding Extensibility
Authors: Silliman Jacob , Koebley Sean R. , Schniepp Hannes C. 
Published: October 2024

AbstractCribellate silks, produced by ancient spiders, are fascinating because they feature a highly sophisticated, 3D hierarchical structure consisting of filaments with different diameters and shapes. Here, the smallest and thinnest constituents of the cribellate silk are investigated: nanofibrils that form a dense mesh that is supported by larger fibers. Analysis of their structure via atomic force and transmission electron microscopies shows that they are flattened fibrils, only ≈5 nm thick — thinner than any other natural spider silk fibrils previously reported. In this work, the first mechanical tensile testing experiments on these fibrils are carried out, which reveals that the fibrils show an outstanding extensibility of at least 1100%, almost twice as much as the most stretchable spider silk previously reported. Based on these extraordinary findings, this work significantly expands the parameter space of materials properties attainable by spider silks and provides further insights into their nanomechanics.
Magnetoelectric Phase Control at Domain‐Wall‐Like Epitaxial Oxide Multilayers
Authors: Gradauskaite Elzbieta , Yang Chia‐Jung , Efe Ipek , Pal Shovon , Fiebig Manfred , Trassin Morgan 
Published: October 2024

AbstractFerroelectric domain walls are nanoscale objects that can be created, positioned, and erased on demand. They often embody functional properties that are distinct from the surrounding bulk material. Enhanced conductivity, for instance, is observed at charged ferroelectric domain walls. Regrettably, domain walls of this type are scarce because of the energetically unfavorable electrostatics. This hinders the current technological development of domain‐wall nanoelectronics. Here this constraint is overcome by creating robust domain‐wall‐like objects in epitaxial oxide heterostructures. Charged head‐to‐head (HH) and tail‐to‐tail (TT) junctions are designed with two ferroelectric layers (BaTiO3 and BiFeO3) that have opposing out‐of‐plane polarization. To test domain‐wall‐like functionalities, an ultrathin ferromagnetic La0.7Sr0.3MnO3 layer is inserted into the junctions. The interfacial electron or hole accumulation at the interfaces, set by the HH and TT polarization configurations, respectively, controls the LSMO conductivity and magnetization. Thus it is proposed that trilayers reminiscent of artificial domain walls provide magnetoelectric functionality and may constitute an important building block in the design of oxide‐based electronic devices.
Potassium 3‐Thiophenetrifluoroborate Based Preferential Redox toward Highly Efficient Bilateral Protection for Full Li–S Batteries
Authors: Liu Fuyong , Xu Dexiang , Liu Zifeng , Wang Lu , Chen Miao , Zhou Dan , Xiao Zhubing 
Published: October 2024

AbstractElectrolyte additives have been promising strategies aimed at lithium metal dendrite growth and active materials loss of sulfur cathode those have troubled the development of Li‐S batteries (LSBs), while current interface modulations of electrodes are still challenged by low protection efficiency and high N/P ratio. Herein, potassium 3‐thiophenetrifluoroborate (KPTB) is adopted as an additive to construct versatile interface for both lithium metal anode (LMA) and sulfur cathode. The preferentially electrochemical reduction and oxidation of PTB (3‐thiophenetrifluoroborate) moiety, as well as electrostatic shielding exerted by K+ ion, enable F‐rich solid electrolyte interphase for LMA and construct polythiophene based protection layers on the two electrodes, facilitating fast and uniform ion/electron transfer across the interface, suppressing polysulfide outflow and maintaining integrity of electrodes. Electrochemical measurements indicate that optimized dosage of KPTB in electrolyte remarkably enhances reversibility and cyclic stability of the two electrodes, and endows LSBs with excellent performances over wide temperature range (−25–50 °C). Remarkably, the Li‐S full cells using a 75 µm of LMA can deliver a capacity of 6.0 mAh cm−2 and excellent cyclic performances for 350 cycles, at a N/P ratio as low as 1.4. This work can provide new reliable solution for electrolyte additive based interface protections in LSBs.
Tailoring Physicochemical Properties of Photothermal Hydrogels Toward Intrinsically Regenerative Therapies
Authors: Xiao Tong , Dai Hongliang , Wu Yang , Liu Zhou , Yeow Jonothan , Xing Xinhui , Geng Hongya 
Published: October 2024

AbstractPhotothermal hydrogels (PTHs) are considered next‐generation biomaterials as they offer remotely defined biophysical information of the extracellular milieu. PTHs allow precise and non‐genetic control for the regeneration of native tissues, which is the ultimate goal of tissue engineering (TE). Molecular and physical properties of PTHs, such as components, structural configurations, and mechanical characteristics, collectively serve as determinants for understanding the dynamic tissue response and clinical translation. PTHs have entered a period of fruition due to the development of numerous manufacturing technologies and polymeric matrices. Herein, this review comprehensively and meticulously elucidates the mechanisms of regenerative therapeutics underlying the design and fabrication of PTHs. Recent advances in the photothermal principles and various categories of photothermal agents (PTAs) have been extensively discussed. Vital components and structures of PTHs are summarized to enable efficacious and precise therapeutic energy delivery. Emerging applications of PTHs in TE are also demonstrated, which expand the strategies for the intrinsic regeneration of injured tissues. Then deliberate the structural and chemical engineering of PTHs to enhance prognosis while highlighting the challenges associated with clinical translation. In this review, we aim to provide guidance and prospects for exploration and innovation of PTHs in the field of TE.
Anion‐Mediated Rapid and Direct Synthesis of FeNiOOH for Robust Water Oxidation
Authors: Nie Jianhang , Shi Jinghui , Li Lei , Xie Meng‐Yuan , Ouyang Zhen‐Yang , Xian Ming‐Hua , Huang Gui‐Fang , Wan Hui , Hu Wangyu , Huang Wei‐Qing 
Published: October 2024

AbstractFeNiOOH is regarded as the most stable active species in the oxygen evolution reaction (OER), but the high oxidation energy of NiOOH poses a challenge to directly synthesize FeNiOOH as a real OER catalyst. Herein, an anion‐mediated kinetically controlled strategy is proposed, coupled with cation‐induced geometric topology modulation, to directly synthesis FeNiOOH with ultra‐thin, densely packed nanosheet architectures. Specifically, the Cl−‐mediated in situ generation of hypochlorous acid promotes the direct formation of NiFeOOH. Concurrently, high‐valence competitive Ru3+ mitigate electrostatic repulsion, fostering a compact and densely packed assembly of Ru/FeNiOOH nanosheet branches. Furthermore, the intrinsic electron‐capturing ability of FeOOH, in synergy with the stabilizing effect of doped Ru atoms, further promote the formation and stabilization high‐valence NiOOH. Consequently, the hierarchical Ru/FeNiOOH@NiPOx nanoarray catalyst displays exceptional OER performance, with an overpotential of 172 mV at 10 mA cm−2 and outstanding stability. This study provides a novel strategy to directly construct a real catalyst.
Double Enzyme Active Hydrogel Program Regulates the Microenvironment of Staphylococcus aureus‐Infected Pressure Ulcers
Authors: Xie Hailin , Qian Yuna , Ding Jiayi , Zhao Rui , Huang Linwei , Shen Jianliang , Zhou Zhihua 
Published: October 2024

AbstractThe treatment of infected pressure ulcers (IUPs) requires addressing diverse microenvironments. A pressing challenge is to effectively enhance the regenerative microenvironment at different stages of the healing process, tailoring interventions as needed. Here, a dual enzyme mimetic and bacterial responsive self‐activating antimicrobial hydrogel designed to enhance IPUs healing is introduced. This hydrogel incorporates pH‐responsive dual enzyme‐active nanoplatforms (HNTs‐Fe‐Ag) encapsulated within a methacrylate‐modified silk fibroin (SFMA) and dopamine methacrylamide (DMA) matrix. This composite hydrogel exhibits adaptive microenvironment regulation capabilities. Under the low pH microenvironment of bacterial infection, it has excellent antimicrobial activity by self‐activating the •OH generation in conjunction with photothermal effects. Under the neutral and alkaline microenvironment of chronic inflammation, it catalyzes the decomposition of hydrogen peroxide (H2O2) to produce oxygen (O2), thereby alleviating hypoxia and scavenging reactive oxygen species (ROS), which in turn remodulates the phenotype of macrophages. The composite hydrogel demonstrates on‐demand therapeutic effects in the microenvironment of infected wounds, significantly enhancing the regenerative microenvironment of IUPs by promoting wound closure, inflammation regulation, and collagen deposition through self‐activated antimicrobial action during infection and adaptive hypoxia relief during recovery. This approach offers a novel strategy for developing smart wound dressings.
Beyond Flexible: Unveiling the Next Era of Flexible Electronic Systems
Authors: Kim Min Sung , Almuslem Amani S. , Babatain Wedyan , Bahabry Rabab R. , Das Uttam K. , El‐Atab Nazek , Ghoneim Mohamed , Hussain Aftab M. , Kutbee Arwa T. , Nassar Joanna , Qaiser Nadeem , Rojas Jhonathan P. , Shaikh Sohail F. , Torres Sevilla Galo A. , Hussain Muhammad M. 
Published: October 2024

AbstractFlexible electronics are integral in numerous domains such as wearables, healthcare, physiological monitoring, human–machine interface, and environmental sensing, owing to their inherent flexibility, stretchability, lightweight construction, and low profile. These systems seamlessly conform to curvilinear surfaces, including skin, organs, plants, robots, and marine species, facilitating optimal contact. This capability enables flexible electronic systems to enhance or even supplant the utilization of cumbersome instrumentation across a broad range of monitoring and actuation tasks. Consequently, significant progress has been realized in the development of flexible electronic systems. This study begins by examining the key components of standalone flexible electronic systems–sensors, front‐end circuitry, data management, power management and actuators. The next section explores different integration strategies for flexible electronic systems as well as their recent advancements. Flexible hybrid electronics, which is currently the most widely used strategy, is first reviewed to assess their characteristics and applications. Subsequently, transformational electronics, which achieves compact and high‐density system integration by leveraging heterogeneous integration of bare‐die components, is highlighted as the next era of flexible electronic systems. Finally, the study concludes by suggesting future research directions and outlining critical considerations and challenges for developing and miniaturizing fully integrated standalone flexible electronic systems.
Imaging Locally Inhomogeneous Properties of Metal Halide Perovskites
Authors: Kosar Sofiia , De Wolf Stefaan 
Published: October 2024

AbstractMetal halide perovskites (MHPs) are a perfect example of state‐of‐the‐art photovoltaic materials whose compositional and structural diversity, coupled with utilization of low‐temperature processing, can undesirably result in spatially inhomogeneous properties that locally vary within the material. This complexity of MHPs requires sensitive imaging characterization methods at the microscopic level to gauge the impact of such inhomogeneities on device performance and to formulate mitigation strategies. This review consolidates properties of MHPs that are susceptible to local variations and highlights appropriate imaging techniques that can be employed to map them. Inhomogeneities in morphology, emission, electrical response, and chemical composition of MHP thin films are specifically considered, and possible microscopic techniques for their visualization are reviewed. For each type of microscopy, a short discussion about spatial resolution, sample requirements, advantages, and limitations is provided, thus leaving the reader with a guide of available imaging characterization tools to evaluate inhomogeneities of their MHPs.
Intense Circular Dichroism and Spin Selectivity in AgBiS2 Nanocrystals by Chiral Ligand Exchange
Authors: Ding Pengbo , Chen Dezhang , Tamtaji Mohsen , Hu Sile , Qammar Memoona , Ko Pui Kei , Sergeev Aleksandr A. , Zou Bosen , Tang Bing , Wong Kam Sing , Guo Liang , Chen Guanhua , Rogach Andrey L. , Halpert Jonathan E. 
Published: October 2024

AbstractChiral semiconducting nanomaterials offer many potential applications in photodetection, light emission, quantum information, and so on. However, it is difficult to achieve a strong circular dichroism (CD) signal in semiconducting nanocrystals (NCs) due to the complexity of chiral ligand surface engineering and multiple, uncertain mechanisms of chiroptical behavior. Here, a chiral ligand exchange strategy with cysteine on the ternary metal chalcogenide AgBiS2 NCs is developed, and a strong, long‐lasting CD signal in the near‐UV region is achieved. By carefully optimizing the ligand concentration, the CD peaks are observed at 260 and 320 nm, respectively, giving insight into the different ligand binding mechanisms influencing the CD signal of AgBiS2 NCs. Using density‐functional theory, a large degree of crystal distortion by the bidentate mode of ligand chelation, and efficient ligand‐NC electron transfer, synergistically resulting in the strongest CD signal (g‐factor over 10−2) observed in chiral ligand‐exchanged semiconductor NCs to date, is demonstrated. To demonstrate the effective chiral properties of these AgBiS2 NCs, a spin‐filter device with over 86% efficiency is fabricated. This work represents a considerable leap in the field of chiral semiconductor NCs and points toward their future applications.
Polyoxometalate Reinforced Perovskite Phase for High‐Performance Perovskite Photovoltaics
Authors: Huang Xiaofeng , Bi Leyu , Yao Zefan , Fu Qiang , Fan Baobing , Wu Shengfan , Su Zhenhuang , Feng Qifan , Wang Jiarong , Hong Yuhao , Liu Ming , An Yidan , Chen Mingqian , Jen Alex K.‐Y. 
Published: October 2024

AbstractIonic hybrid perovskites face challenges in maintaining their structural stability against non‐equilibrium phase degradation, therefore, it is essential to develop effective ways to reinforce their corner‐shared [PbI6]4− octahedral units. To strengthen structural stability, redox‐active functional polyoxometalates (POMs) are developed and incorporated into perovskite solar cells (PSCs) to form a robust polyoxometalates/perovskite interlayer for stabilizing the perovskite phase. This approach offers several advantages: 1) promotes the formation of an interfacial connecting layer to passivate interfacial defects in addition to stabilize the [PbI6]4− units through exchanged ammonium cations in POMs with perovskites; 2) facilitates continuous structural repairing of Pb0‐ and I0‐rich defects in the [PbI6]4− unit through redox electron shuttling of the electroactive metal ions in POMs; 3) provides guidance for selecting suitable redox mediators based on the kinetic studies of POM's effectiveness in reacting with targeted defects. The POM‐reinforced device maintains 97.2% of its initial PCE after 1500 h of shelf‐life test at 65 °C, while also enhancing the long‐term operational stability. Additionally, this approach can be generally applicable across scalable sizes and various bandgap perovskites in devices, showing the promise of using functional POMs to enhance perovskite photovoltaic performance.
Methodology to Control the Regioselective Installation of a Carboxylic Acid for the Synthesis of 2,3‐Diarylpropionic Acids
Authors: Hamilton Mason D. , Perrone Trina M. , Popp Brian V. 
Published: October 2024

AbstractA stepwise copper‐catalyzed boracarboxylation then palladium‐catalyzed Suzuki‐Miyaura cross‐coupling methodology was developed to access 2,3‐diarylpropionic acid derivatives regioselectively by pre‐setting the position of the carboxylic acid in the boracarboxylation reaction. This method provides access to a wide range of aryl and heteroaryl products in up to 80% isolated yield. Pharmaceutical potential was demonstrated by synthesizing a glucagon receptor antagonist drug in three steps (31% overall yield) from commercially available 4‐tert‐butylstyrene.