bluuebunny/crossref_metadata_2025_split huggingface dataset:
A SOCIOLOGIA PERIFÉRICA DE GUERREIRO RAMOS
Authors: Ehlert Maia João Marcelo 
Published: August 2022

O artigo analisa a obra do sociólogo Alberto Guerreiro Ramos como parte do campo da sociologia periférica. Por meio de uma leitura interna de seus textos escritos na década de 1950, sugere-se que uma abordagem transnacional de sua produção intelectual pode contribuir para inserir a história do pensamento social brasileiro no campo da história global da sociologia no pós-Segunda Guerra Mundial.Palavras-chave : Guerreiro Ramos; Sociologia Periférica; História Da Sociologia; Pensamento Social Brasileiro.The peripheral sociology of Guerreiro Ramos João Marcelo Ehlert MaiaThis article analyzes the works by sociologist Alberto Guerreiro Ramos as a part of the field of peripheral sociology. From an internal reading of his texts written in the 1950s, we suggest that a transnational approach of his intellectual output may contribute to inserting the history of Brazilian social thought in the field of the global history of post-WWII sociology.Palavras-chave : Guerreiro Ramos; Peripheral Sociology; History Of Sociology; Brazilian Social Thought.La sociologie périphérique de Guerreiro Ramos João Marcelo Ehlert MaiaL’article analyse l’oeuvre de Alberto Guerreiro Ramos en tant que partie du champ de la sociologie périphérique. Par une lecture interne de ses textes écrits dans les années 1950, nous partons de l’hypothèse selon laquelle une approche transnationale de sa production intellectuelle peut contribuer à insérer l’histoire de la pensée sociale brésilienne dans le champ de l’histoire mondiale de la sociologie post Deuxième Guerre Mondiale.Palavras-chave : Guerreiro Ramos; Sociologie Périphérique; Histoire De La Sociologie; Pensée Sociale Brésilienne.Publicação Online do Caderno CRH no Scielo: http://www.scielo.br/ccrh Publicação Online do Caderno CRH: http://www.cadernocrh.ufba.br
Demonstration of Low Work Function Perovskite SrVO3 Using Thermionic Electron Emission
Authors: Lin Lin , Jacobs Ryan , Chen Dongzheng , Vlahos Vasilios , Lu‐Steffes Otto , Alonso Jose A. , Morgan Dane , Booske John 
Published: August 2022

AbstractEngineering a material's work function is of central importance for many technologies and in particular electron emitters used in high‐power vacuum electronics and thermionic energy converters. A low work function surface is typically achieved through unstable surface functional species, especially in high power thermionic electron emitter applications. Discovering and engineering new materials with intrinsic, stable low work functions obtainable without volatile surface species would mark a definitive advancement in the design of electron emitters. This work reports evidence for the existence of a low work function surface on a bulk, monolithic, electrically conductive perovskite oxide: SrVO3. After considering the patch field effect on the heterogeneous emitting surface of the bulk polycrystalline samples, this study suggests the presence of low work function (≈2 eV) emissive grains on SrVO3 surface. Emission current densities of 10–100 mA cm–2 at ≈1000 °C, comparable to commercial LaB6 thermionic cathodes, indicative of an overall effective thermionic work function of 2.3–2.7 eV are obtained. This study demonstrates that perovskites like SrVO3 may have intrinsically low work functions comparable to commercialized W‐based dispenser cathodes and suggests that, with further engineering, perovskites may represent a new class of low work function electron emitters.
Amine Salts Vapor Healing Perfected Perovskite Layers for NiOx Based p‐i‐n Solar Cells
Authors: Li Yu , Lin Zedong , Wang Jian , Xu Rongguo , Zhang Kai , Wang Gaopeng , Liu Tongfa , Zhou Huanping , Xiao Shuang , Yang Shihe 
Published: August 2022

AbstractPost‐treatment is a widely used strategy to reduce defects in perovskite films, but has been largely limited to the solution phase. Herein, the posttreatment tool kit and develop a universal amine salts (AIXI) vapor healing strategy by taking advantage of the penetrating power of vapor and the soft‐matter characteristics of halide perovskite is expanded. In a striking demonstration, the post‐treatment of pristine perovskite layers allows simultaneous filling of the MA+ and I– vacancies, passivation of both the cation and anion defects, and healing of the films to high order and high crystallinity required for high device performance, from the surface to the bulk and all the way down to the bottom. Experiments and DFT calculations revealed that charge extraction can be enhanced and non‐radiative recombination can be reduced by regulating the energy levels and reducing the trap states via the AIXI vapor healing. Moreover, the diffusing AIXI can reach the NiOx surface to obstruct the undesirable interfacial reactions and passivate the interface defects, further reducing the open‐circuit voltage (Voc) loss. The vapor healing strategy substantially reduces the trap density from 4.76 × 1015 to 1.04 × 1015 cm–3, and promots power conversion efficiency of the champion device from 17.92% to 20.48% with superior device consistency, Voc up to 1.114 V and the operational device stability.
Spontaneous Hybrid Cross‐Linked Network Induced by Multifunctional Copolymer toward Mechanically Resilient Perovskite Solar Cells
Authors: Han Tae‐Hee , Zhao Yepin , Yoon Jungjin , Woo Joo Yoon , Cho Eun‐Ha , Kim Wan Dong , Lee Changsoo , Lee Jin‐Wook , Choi Jin‐Myung , Han Jiye , Nam Jeong‐Seok , Wang Kai , Priya Shashank , Balaban Milica , Jeon Il , Yang Yang 
Published: August 2022

AbstractMechanically resilient optoelectronic devices are relevant for a wide range of applications, including portable and wearable devices. Perovskite thin film‐based devices are a suitable choice for designing such resilient systems as it demonstrates high performance while preserving moderate mechanical compliance. Yet its mechanical property can be improved further by integrating the energy dissipation system and self‐healing ability into the thin film. Copolymers containing Lewis‐base functional groups, elastomer chains, and cyclic linkages are synthesized and introduced into the perovskite precursor. The polymers impart multifunctional effect of controlled crystal growth, defect passivation, protection against moisture, mechanical energy dissipation, and self‐recoverability. The polymer‐added perovskite solar cells are shown to provide a power conversion efficiency of 23.25% (a steady‐state efficiency of 22.61%), due to the strong coordinative covalent interaction between the polymer and the perovskite. An operational lifetime of solar cells under harsh conditions is also substantially extended by the polymer incorporation. Furthermore, the interchain hydrogen‐bond strength controlled by the cyclic linkage, and hybrid cross‐linked network formed within the thin film significantly improves the mechanical stability and self‐recoverability of the thin film. As a result, the devices demonstrate robustness under 2000 cyclic flex tests at a bending radius of 1 mm.
Synergy of Spin‐Orbit Torque and Built‐In Field in Magnetic Tunnel Junctions with Tilted Magnetic Anisotropy: Toward Tunable and Reliable Spintronic Neurons
Authors: Wang Di , Wang Ziwei , Xu Nuo , Liu Long , Lin Huai , Zhao Xuefeng , Jiang Sheng , Lin Weinan , Gao Nan , Liu Ming , Xing Guozhong 
Published: August 2022

AbstractOwing to programmable nonlinear dynamics, magnetic domain wall (DW)‐based devices can be configured to function as spintronic neurons, promising to execute sophisticated tasks as a human brain. Developing energy‐efficient, CMOS compatible, reliable, and tunable spintronic neurons to emulate brain‐inspired processes has been a key research goal for decades. Here, a new type of DW device is reported with biological neuron characteristics driven by the synergistic interaction between spin‐orbit torque and built‐in field (Hbuilt‐in) in magnetic tunnel junctions, enabling time‐ and energy‐efficient leaky‐integrate‐and‐fire and self‐reset neuromorphic implementations. A tilted magnetic anisotropic free layer is proposed and further executed to mitigate the DW retrograde motion by suppressing the Walker breakdown. Complementary experiments and micromagnetic co‐simulation results show that the integrating/leaking time of the developed spintronic neuron can be tuned to 12/15 ns with an integrating power consumption of 65 µW, which is 36× and 1.84× time and energy efficient than the state‐of‐the‐art alternatives, respectively. Moreover, the spatial distribution of Hbuilt‐in can be modulated by adjusting the width and compensation of the reference layer, facilitating tunable activation function generator exploration. Such architecture demonstrates great potential in both fundamental research and new trajectories of technology advancement for spintronic neuron hardware applications.
Sleep disturbance is a common feature of Kabuki syndrome
Authors: Rapp Tyler , Kalinousky Allison J. , Johnson Jennifer , Bjornsson Hans , Harris Jacqueline 
Published: August 2022

AbstractKabuki syndrome (KS) is a rare epigenetic disorder caused by heterozygous loss of function variants in either KMT2D (90%) or KDM6A (10%), both involved in regulation of histone methylation. While sleep disturbance in other Mendelian disorders of the epigenetic machinery has been reported, no study has been conducted on sleep in KS. This study assessed sleep in 59 participants with KS using a validated sleep questionnaire. Participants ranged in age from 4 to 43 years old with 86% of participants having a pathogenic variant in KMT2D. In addition, data on adaptive function, behavior, anxiety, and quality of life were collected using their respective questionnaires. Some form of sleep issue was present in 71% of participants, with night‐waking, daytime sleepiness, and sleep onset delay being the most prevalent. Sleep dysfunction was positively correlated with maladaptive behaviors, anxiety levels, and decreasing quality of life. Sleep issues were not correlated with adaptive function. This study establishes sleep disturbance as a common feature of KS. Quantitative sleep measures may be a useful outcome measure for clinical trials in KS. Further, clinicians caring for those with KS should consider sleep dysfunction as an important feature that impacts overall health and well being in these patients.
Non‐Uniqueness of Driving Fields Generating Non‐Linear Optical Response
Authors: McCaul Gerard , King Alexander F. , Bondar Denys I. 
Published: August 2022

AbstractIn recent years, non‐linear optical phenomena have attracted much attention, with a particular focus on the engineering and exploitation of non‐linear responses. Comparatively little study has, however, been devoted to the driving fields that generate these responses. This work demonstrates that the relationship between a driving field and the optical response it induces is non‐unique. Using a generic model for a strongly interacting system, it is shown that multiple candidate driving field exists, which will all generate the same response. Consequently, it is possible to show that the optical response is not sufficient to determine the internal dynamics of the system, and that different solutions for the driving field will do different amounts of work on a system. Physically, the work done indicates the energy absorbed by the system from the field and will therefore correspond to modifying the absorption spectrum of the material. This non‐uniqueness phenomenon may be further utilized to engineer thermodynamically efficient system states without modifying its optical response.
Small‐Molecule‐based Supramolecular Plastics Mediated by Liquid‐Liquid Phase Separation**
Authors: Yu Jingjing , Qi Dawei , Mäkilä Ermei , Lassila Lippo , Papageorgiou Anastassios C. , Peurla Markus , Rosenholm Jessica M. , Zhao Zhao , Vallittu Pekka , Jalkanen Sirpa , Jia Chunman , Li Jianwei 
Published: August 2022

AbstractPlastics are one of the most widely used polymeric materials. However, they are often undegradable and non‐recyclable due to the very stable covalent bonds of macromolecules, causing environmental pollution and health problems. Here, we report that liquid‐liquid phase separation (LLPS) could drive the formation of robust, stable, and sustainable plastics using small molecules. The LLPS process could sequester and concentrate solutes, strengthen the non‐covalent association between molecules and produce a bulk material whose property was highly related to the encapsulated water amounts. It was a robust plastic with a remarkable Young's modulus of 139.5 MPa when the water content was low while became adhesive and could instantly self‐heal with more absorbed water. Finally, responsiveness enabled the material to be highly recyclable. This work allowed us to understand the LLPS at the molecular level and demonstrated that LLPS is a promising approach to exploring eco‐friendly supramolecular plastics that are potential substitutes for conventional polymers.
Polystyrene‐based Macromolecular Ammonium Halides for Tuning Color and Exchange Kinetics of Perovskite Nanocrystals
Authors: Cueto Christopher , Hu Weiguo , Ribbe Alexander , Bolduc Kimberly , Emrick Todd 
Published: August 2022

AbstractPost‐synthesis anion exchange of all‐inorganic cesium lead halide perovskite nanocrystals (CsPbX3 NCs, where X=Cl, Br, and/or I) provides a rapid and simple means of tuning their band gap and photoluminescence emission wavelengths. Here we report color‐shifting of CsPbX3 nanocrystals induced by a macromolecular source of halide ions, specifically using polystyrene with ammonium halides as pendent groups. This strategy for introducing new halides to the perovskite nanocrystals gave access to perovskite‐polymer hybrid materials as solutions, thin films, or free‐flowing powders. Spectroscopic measurements of the halide‐exchanged nanocrystal products revealed high photoluminescence quantum yields across the visible spectrum, with exchange kinetics that were tunable based on the solution environment, suggesting an aggregation‐inhibited exchange process that affords access to multi‐colored solutions and films.
Photo‐Excited Nickel‐Catalyzed Silyl‐Radical‐Mediated Direct Activation of Carbamoyl Chlorides To Access (Hetero)aryl Carbamides**
Authors: Maiti Sudip , Roy Sayan , Ghosh Pintu , Kasera Aashi , Maiti Debabrata 
Published: August 2022

AbstractAmide bonds connect the amino acids in proteins and exist as a prevalent structural motif in biomolecules. Herein, we have exploited the concept of cross‐electrophile coupling by merging the photo‐redox and transition‐metal catalysis to construct carbamides from superabundant (hetero)aryl halides along with commercially feasible carbamoyl chlorides. The success of this method relies on the prior formation of NiII‐aryl halide intermediates, which involves in a photoexcited Ni‐halide homolysis event by energy transfer from aryl bromide and single‐electron transfer from aryl chloride to assist generation of the vital carbamoyl radical. The breadth of application of this technique is demonstrated both in inter‐ as well as intramolecular routes for the synthesis of a plethora of (hetero)aryl carbamides with diverse functionalities, and biologically important benzolactams.
Simultaneously Enhanced Hydrophilicity and Stability of a Metal‐Organic Framework via Post‐Synthetic Modification for Water Vapor Sorption/Desorption
Authors: Luo Tian‐Yi , Park Sunghwan , Chen Tso‐Hsuan , Prerna  , Patel Roshan , Li Xinyu , Ilja Siepmann J. , Caratzoulas Stavros , Xia Zhiyong , Tsapatsis Michael 
Published: August 2022

AbstractWith increasing demands for high‐performance water sorption materials, metal‐organic frameworks (MOFs) have gained considerable attention due to their high maximum uptake capacities. In many cases, however, high overall capacity is not necessarily accomplishing high working capacity under operating conditions, due to insufficient hydrophilicity and/or water stability. Herein, we present a post‐synthetic modification (PSM) of MOF‐808, with di‐sulfonic acids enhancing simultaneously its hydrophilicity and water stability without sacrificing its uptake capacity of ≈30 mmol g−1. Di‐sulfonic acid PSM enabled a shift of the relative humidity (RH) associated with a sharp step in water vapor sorption from 35–40 % RH in MOF‐808 to below 25 % RH. While MOF‐808 lost uptake capacity and crystallinity over multiple sorption/desorption cycles, the di‐sulfonic acid PSM MOF‐808 retained >80 % of the original capacity. PSM MOF‐808 exhibited good hydrothermal stability up to 60 °C and high swing capacity.
Topochemical Synthesis of Ca3CrN3H Involving a Rotational Structural Transformation for Catalytic Ammonia Synthesis
Authors: Cao Yu , Kirsanova Maria A. , Ochi Masayuki , Al Maksoud Walid , Zhu Tong , Rai Rohit , Gao Shenghan , Tsumori Tatsuya , Kobayashi Shintaro , Kawaguchi Shogo , Abou‐Hamad Edy , Kuroki Kazuhiko , Tassel Cédric , Abakumov Artem M. , Kobayashi Yoji , Kageyama Hiroshi 
Published: August 2022

AbstractTopochemical reactions have led to great progress in the discovery of new metastable compounds with novel chemical and physical properties. With these reactions, the overall crystal structure of the host material is generally maintained. Here we report a topochemical synthesis of a hexagonal nitride hydride, h‐Ca3CrN3H, by heating an orthorhombic nitride, o‐Ca3CrN3, under hydrogen at 673 K, accompanied by a rotational structural transformation. The hydrogen intercalation modifies the Ca−N rock‐salt‐like atomic packing in o‐Ca3CrN3 to a face‐sharing octahedral chain in h‐Ca3CrN3H, mimicking a “hinged tessellation” movement. In addition, the h‐Ca3CrN3H exhibited stable ammonia synthesis activity when used as a catalyst.
Ketenes in the Induction of the Methanol‐to‐Olefins Process
Authors: Wu Xiangkun , Zhang Zihao , Pan Zeyou , Zhou Xiaoguo , Bodi Andras , Hemberger Patrick 
Published: August 2022

AbstractKetene (CH2=C=O) has been postulated as a key intermediate for the first olefin production in the zeolite‐catalyzed chemistry of methanol‐to‐olefins (MTO) and syngas‐to‐olefins (STO) processes. The reaction mechanism remains elusive, because the short‐lived ethenone ketene and its derivatives are difficult to detect, which is further complicated by the low expected ketene concentration. We report on the experimental detection of methylketene (CH3−CH=C=O) formed by the methylation of ketene on HZSM‐5 via operando synchrotron photoelectron photoion coincidence (PEPICO) spectroscopy. Ketene is produced in situ from methyl acetate. The observation of methylketene as the ethylene precursor evidences a computationally predicted ketene‐to‐ethylene route proceeding via a methylketene intermediate followed by decarbonylation.
Membrane Manipulation of Giant Unilamellar Polymer Vesicles with a Temperature‐Responsive Polymer
Authors: de Souza Melchiors Marina , Ivanov Tsvetomir , Harley Iain , Sayer Claudia , Araújo Pedro H. H. , Caire da Silva Lucas , Ferguson Calum T. J. , Landfester Katharina 
Published: August 2022

AbstractUnderstanding the complex behavior and dynamics of cellular membranes is integral to gain insight into cellular division and fusion processes. Bottom‐up synthetic cells are as a platform for replicating and probing cellular behavior. Giant polymer vesicles are more robust than liposomal counterparts, as well as having a broad range of chemical functionalities. However, the stability of the membrane can prohibit dynamic processes such as membrane phase separation and division. Here, we present a method for manipulating the membrane of giant polymersomes using a temperature responsive polymer. Upon elevation of temperature deformation and phase separation of the membrane was observed. Upon cooling, the membrane relaxed and became homogeneous again, with infrequent division of the synthetic cells.
Hydrophobicity Graded Gas Diffusion Layer for Stable Electrochemical Reduction of CO2
Authors: Li Linbo , Chen Jun , Mosali Venkata Sai Sriram , Liang Yan , Bond Alan M. , Gu Qinfen , Zhang Jie 
Published: August 2022

AbstractTo mitigate flooding associated with the gas diffusion layer (GDL) during electroreduction of CO2, we report a hydrophobicity‐graded hydrophobic GDL (HGGDL). Coating uniformly dispersed polytetrafluoroethylene (PTFE) binders on the carbon fiber skeleton of a hydrophilic GDL uniformizes the hydrophobicity of the GDL and also alleviates the gas blockage of pore channels. Further adherence of the PTFE macroporous layer (PMPL) to one side of the hydrophobic carbon fiber skeleton was aided by sintering. The introduced PMPL shows an appropriate pore size and enhanced hydrophobicity. As a result, the HGGDL offers spatial control of the hydrophobicity and hence water and gas transport over the GDL. Using a nickel‐single‐atom catalyst, the resulting HGGDL electrode provided a CO faradaic efficiency of over 83 % at a constant current density of 75 mA cm−2 for 103 h operation in a membrane electrode assembly, which is more than 16 times that achieved with a commercial GDL.
HXV2O5 Nanocatalysts Combined with Ultrasound for Triple Amplification of Oxidative Stress to Enhance Cancer Catalytic Therapy
Authors: Hou Linqian , Gong Fei , Han Zhihui , Wang Yuanjie , Yang Yuqi , Cheng Shuning , Yang Nailin , Liu Zhuang , Cheng Liang 
Published: August 2022

AbstractMultiple amplification of tumor oxidative stress has been demonstrated as efficient strategy to enhance the reactive oxygen species (ROS)‐mediated cancer therapy. Herein, vanadium‐based nanocatalysts, hydrogen vanadium bronzes (HXV2O5, for short HVO), were constructed and employed as novel biocatalysts for amplifying tumor oxidative stress and enhancing cancer catalytic therapy. Such HVO nanocatalysts harboring multivalent V element possessed multi‐functional catalytic activity in decomposing H2O2 into ⋅OH and depleting endogenous glutathione (GSH) to dually amplify tumor oxidative stress. Meanwhile, HVO nanocatalysts could also be activated by ultrasound to further triply amplify oxidative stress. The massive intracellular ROS caused mitochondrial dysfunction, DNA damage, cell cycle arrest, and cell proliferation inhibition, further realizing cancer cell death and tumor growth inhibition. Collectively, HVO nanocatalysts highlight the remarkable value of ROS‐mediated cancer therapies.
Emissive Metallacage‐Cored Polyurethanes with Self‐Healing and Shape Memory Properties
Authors: Gao Kai , Feng Qian , Zhang Zeyuan , Zhang Ruoqian , Hou Yali , Mu Chaoqun , Li Xiaopeng , Zhang Mingming 
Published: August 2022

AbstractThe structures of the crosslinks in supramolecular polymer networks play an important role on their properties and functions. Herein, emissive metallacages are used as crosslinks to prepare metallacage‐cored polyurethanes. The mechanical properties including storage modulus, toughness, Young's modulus and breaking strength of polymers are greatly enhanced with the increase of crosslinking densities. Moreover, such polymers not only exhibit good fluorescence in the solid state, but also show self‐healing and shape memory properties owing to the dynamic reversible non‐covalent bonds in their structures. This study not only offers a convenient strategy to prepare metallacage‐crosslinked networks, but also explores their applications as self‐healing and shape memory materials, which will promote the study of metallacage‐cored supramolecular networks as smart materials.