bluuebunny/crossref_metadata_2025_split huggingface dataset:
International Scientific Conference "Modern Historical Informatics: Data Analytics in Historical Research" (XIX Conference of the Association "History and Computer")
Authors: Vladimirov Vladimir Nikolayevich , Volodin Andrei Yurievich , Garskova Irina Markovna 
Published: December 2024

From November 15 to 17, 2024, the International Scientific Conference "Modern Historical Informatics: Data Analytics in Historical Research" (XIX Conference of the Association "History and Computer") was held in Moscow, on the basis of the Presidential Academy (RANEPA). The article discusses the features of this conference, the main directions of its work and the results. It is noted that, despite the increasing strengthening of data Science and its impact on the humanities, the priority in the development of historical informatics remains the same – it is focused on the increment of knowledge in various fields of historical science. The current conference was dedicated to the 100th anniversary of the birth of Academician I. D. Kovalchenko, who created the national school of quantitative history and had a great influence on the formation of modern historical source studies, and the 20th anniversary of the first Department of Historical Informatics in Russia (Faculty of History of Lomonosov Moscow State University). The article provides an overview of the plenary and breakout sessions of the conference, as well as the expert discussion "Historical Informatics and the challenge of machine learning: what is the future of historical science in the world of artificial intelligence?" and the round table "Topical issues of historical Informatics." Within the framework of the conference, two plenary and 19 breakout sessions of eight thematic sections were held, at which over 110 reports from Russia, Belarus, Kazakhstan, Kyrgyzstan, and Uzbekistan were presented. The general trend was the participation of a large number of young researchers in the conference. It was noted that the current conference attracted a large number of young researchers, many of whom went through the summer school, which was held in 2024 for the fourth time. The conference participants noted that the current conference was a success and thanked the leadership of the Presidential Academy for the opportunity to hold a scientific forum at this prestigious university. In general, the conference showed that historical informatics as an interdisciplinary scientific field is developing steadily and actively responding to all new trends in the development of science as a whole, while remaining a part of historical science, but using all possible methods and technologies as research tools to gain new knowledge.
Green Regenerative Hydrogel Wound Dressing Functionalized by Natural Drug‐Food Homologous Small Molecule Self‐Assembled Nanospheres
Authors: Sun Xinyu , Jia Pei , Zhang Hui , Dong Mengna , Wang Jiao , Li Lihua , Bu Tong , Wang Xin , Wang Li , Lu Qingyou , Wang Jihao 
Published: November 2021

AbstractThe goal of regenerative wound healing dressings is to restore tissue function back to normal physiological activity and accelerate skin tissue regeneration at wound sites. The optimal strategy to achieve this purpose requires a balance between material functionality, degradation, safety, and tissue regrowth. Herein, for the first time, an ultrasonic‐triggered irreversible tending to equilibrium self‐assembly and ionic cross‐linking codriven strategy is proposed for producing multifunctional cinnamaldehyde‐tannic acid‐zinc acetate nanospheres (CA‐TA‐ZA NSs), realizing the fusion of hydrophilic and hydrophobic drug‐food small molecules. Moreover, a novel “all‐in‐one” chitosan (CS)‐based hydrogel functionalized by introducing drug‐food small molecules self‐assembled CA‐TA‐ZA NSs to the 3D network structures of CS is designed, integrating excellent antibacterial, antioxidant, anti‐inflammatory and reducing oxidative stress damage abilities. Additionally, the multifunctional CS‐based hydrogel can realize rapid in situ gelation at wound sites and completely cover the irregular wounds. All of these superiorities enable the CS‐based hydrogel to clean the wound microenvironment, induce skin tissue remodeling, promote blood vessel repair and hair follicle regeneration, restore the immune system back to normal physiological activity, and accelerate wound healing. Therefore, this study offers a new perspective for the design of advanced functional materials with great application potential in the biomedical field.
Carbon Nanotubes‐Based Electrocatalysts: Structural Regulation, Support Effect, and Synchrotron‐Based Characterization
Authors: He Qun , Qiao Sicong , Zhou Yuzhu , Vajtai Robert , Li Deping , Ajayan Pulickel M. , Ci Lijie , Song Li 
Published: November 2021

AbstractEfficient electrocatalysts are highly desirable for promising electrochemical reactions that are likely to mitigate the long‐standing energy and environment problems mainly resulting from human activities. However, most of them are partly composed by scarce and precious metals, thus hampering their large‐scale utilization. In this regard, developing efficient electrocatalysts with reduced noble metals loading or without noble metals is highly desirable. In the past decade, carbon nanotubes (CNTs)‐based electrocatalysts have proven to be efficient in many typical electrocatalytic reactions, and its strong structure operability and easy accessibility enable the utilization of related electrocatalysts to be sustainable. This review is aimed to summarize the research progress in CNTs‐based electrocatalysts, which are widely used in various electrochemical reactions. The major structure regulation approaches toward CNTs‐based electrocatalysts are highlighted. The primary functions of CNTs‐based electrocatalysts in electrochemical reactions are also highlighted here, together with the discussions on the support effect related to CNTs. Synchrotron‐based spectroscopies which can explore the intrinsic structure details that contribute to the performance enhancement and the electrochemical structure evolution of electrocatalysts under working conditions are also discussed. Finally, the challenges for shedding light on the very essence of the activity and the research perspectives are suggested.
Construction of Interfacial Electric Field via Dual‐Porphyrin Heterostructure Boosting Photocatalytic Hydrogen Evolution
Authors: Jing Jianfang , Yang Jun , Li Wenlu , Wu Zhaohui , Zhu Yongfa 
Published: November 2021

AbstractA dual‐porphyrin heterostructure is successfully constructed by coupling tetrakis (4‐carboxyphenyl) zinc porphyrin (ZnTCPP) with tetrakis (4‐hydroxyphenyl) porphyrin (THPP). The high photocatalytic H2 evolution rate of 41.4 mmol h−1 g−1 is obtained for ZnTCPP/THPP under full spectrum, which is ≈5.1 and ≈17.0 times higher than that of pure ZnTCPP and THPP, respectively. The significantly enhanced activity is mainly attributed to the giant interfacial electric field formed between dual porphyrins, which greatly facilitates efficient charge separation and transfer. Meanwhile, similar conjugated structures of dual porphyrins also provide proper interface match and decrease interface defects, thus inhibiting the recombination of photoproduced carriers. By rationally combining the appropriate band structures and high‐quality interfacial contact of dual porphyrins, this work provides a fresh insight into the interfacial electric field construction to improve the photocatalytic performance.
Anionic Redox Regulated via Metal–Ligand Combinations in Layered Sulfides
Authors: Wang Tian , Ren Guo‐Xi , Xia He‐Yi , Shadike Zulipiya , Huang Tao‐Qing , Li Xun‐Lu , Yang Si‐Yu , Chen Ming‐Wei , Liu Pan , Gao Shang‐Peng , Liu Xiao‐Song , Fu Zheng‐Wen 
Published: November 2021

AbstractThe increasing demand for energy storage is calling for improvements in cathode performance. In traditional layered cathodes, the higher energy of the metal 3d over the O 2p orbital results in one‐band cationic redox; capacity solely from cations cannot meet the needs for higher energy density. Emerging anionic redox chemistry is promising to access higher capacity. In recent studies, the low‐lying O nonbonding 2p orbital was designed to activate one‐band oxygen redox, but they are still accompanied by reversibility problems like oxygen loss, irreversible cation migration, and voltage decay. Herein, by regulating the metal–ligand energy level, both extra capacities provided by anionic redox and highly reversible anionic redox process are realized in NaCr1−yVyS2 system. The simultaneous cationic and anionic redox of Cr/V and S is observed by in situ X‐ray absorption near edge structure (XANES). Under high d–p hybridization, the strong covalent interaction stabilizes the holes on the anions, prevents irreversible dimerization and cation migration, and restrains voltage hysteresis and voltage decay. The work provides a fundamental understanding of highly reversible anionic redox in layered compounds, and demonstrates the feasibility of anionic redox chemistry based on hybridized bands with d–p covalence.
Realizing Diketopyrrolopyrrole Polymer‐Based Uniform Large‐Area Transistors for Active Circuit via Protonic Acid Mediated Molecular Self‐Assembly
Authors: Liu Yanwei , Zhao Zhiyuan , Zhu Mingliang , Huang Xin , Wei Xiaofang , Chen Huajie , Chen Jinyang , Guo Yunlong , Liu Yunqi 
Published: November 2021

AbstractThe solution‐handling characteristics of π‐conjugated polymer semiconductors make them promising candidates for low‐cost flexible electronics. Although homogeneous and stable nonchlorine solvent (NClS) processing is the only way that must be passed for future application, polymer semiconductors still meet the challenges of poor solubility and inhomogeneities in NClS. Here, the authors primp polymer molecules with protonic acid by multiple interactions, that is, proton exchange and hydrogen bond interaction, to achieve scale and model‐constrained PDVT‐10c assembly in NClS. As a result, a uniform near‐amorphous PDVT‐C10c film is developed for polymer thin‐film transistor (PTFT) array, which exhibits uniform performance with much narrower Gaussian standards deviation than pristine PDVT‐C10c one. Finally, a 5 cm × 5 cm PTFT as the active‐matrix circuit for blue organic light‐emitting diode is demonstrated. The results illustrate the great potential of protonic acid‐mediated molecular self‐assembly on homogeneous and stable NClS processing polymer semiconductors for next‐generation flexible electronics.
FeCl3‐Catalyzed Diastereodivergent Sulfamidation of Diarylmethanol Diastereomixtures Bearing a Chiral Auxiliary Dependent on Catalyst Loading
Authors: Oda Ryoga , Yamamoto Hiroshi , Nakata Kenya 
Published: November 2021

AbstractThe FeCl3‐catalyzed, diastereodivergent sulfamidation of diastereomixtures of diarylmethanols bearing a chiral auxiliary was achieved and was found to be dependent on the catalyst loading. Under these conditions, a variety of substrates bearing different substituents on their aromatic rings could be applied to both reaction pathways. The sulfamide moieties were easily removed to give the corresponding chiral amines. Chiral sulfamides with different stereochemistry were efficiently synthesized as organocatalysts using the present method.
Direct Photoexcitation of Borate Enabling Minisci Reaction
Authors: Kemmochi Marin , Miyamoto Yusuke , Sumida Yuto , Ohmiya Hirohisa 
Published: November 2021

AbstractThe photoexcitable borate enabling Minisci C−H alkylation of heteroarene has been described. This protocol using alkylborate only needed O2 and visible light, which provides a considerably clean system. The direct photoexcitation of alkylborate allowed the generation of tertiary, secondary, and primary‐alkyl radical including methyl radical. This light‐driven Minisci reaction gave a choice for the functionalization of heteroarenes.
Rh(III)‐Catalyzed Cross‐Coupling/Annulation of Two Carbene Precursors: Construction of Dihydrobenzo[c]chromen‐6‐one Scaffolds and Application in the Total Synthesis of Cannabinol
Authors: Kumar Sanjeev , Nunewar Saiprasad , Kanchupalli Vinaykumar 
Published: November 2021

AbstractA cross‐coupling/annulation reaction of sulfoxonium ylides with iodonium ylides has been reported by Rh(III)‐catalyzed C−H functionalization pathway to provide a direct access to valuable dihydrobenzo[c]chromen‐6‐one derivatives. In this catalytic system, sulfoxonium ylide functionality acts as a traceless directing group (DG), and iodonium ylide acts as carbene precursor resulting in a highly selective reaction. The synthetic utility of this methodology is demonstrated by diverse synthetic transformations, core structure of Urolithin derivatives and total synthesis of cannabinol natural product.
Spin‐Spacetime Censorship
Authors: Nemirovsky Jonathan , Cohen Eliahu , Kaminer Ido 
Published: November 2021

AbstractQuantum entanglement and relativistic causality are key concepts in theoretical works seeking to unify quantum mechanics and gravity. In this article, a gedanken experiment that couples the spin to spacetime is proposed, and is then analyzed in the context of quantum information by using different approaches to quantum gravity. Both classical gravity theory and certain quantum theories predict that around a spin‐half particle, the spherical symmetry of spacetime is broken by its magnetic field or merely by its intrinsic angular momentum. It is asserted that any spin‐related deviation from spherical symmetry, upon appropriate measurement, can violate relativistic causality and quantum no‐cloning. To avoid these violations, the measurable spacetime around the particle's rest frame shall typically remain spherically symmetric, potentially as a back‐action by the act of a covariant measurement, or due to a quantized spin‐dependence of the magnetic field. This way, this gedanken experiment suggests a censorship mechanism preventing the possibility of spacetime‐based spin detection, which can shed light on the interface between quantum mechanics and gravity. Since this proposed gedanken experiment is independent of any specific theory, it is suitable for testing the coupling of quantum matter and spacetime in present and future candidate theories of quantum gravity.
Structural and photoluminescence properties of Dy3+‐activated NaCaPO4 phosphor derived from solution combustion
Authors: Parauha Yatish Ratn , Dhoble Sanjay Janaraoji 
Published: November 2021

AbstractIn the current investigation, a series of NaCa1−xPO4:xDy3+ (x = 0.1, 0.3, 0.5, 0.7, 1.0, 1.5 and 2 mol%) phosphors were synthesized using a solution combustion method and citric acid as fuel. The investigated results from the X‐ray diffraction (XRD) pattern showed phase purity of the synthesized material and orthorhombic crystal structure with space group Pna21. Photoluminescence properties of the synthesized phosphors were investigated. The synthesized Dy3+‐activated phosphor displayed blue (482 nm) and yellow (576 nm) emission under near‐ultraviolet or blue excitations. These emission bands were ascribed due to the 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions of Dy3+ ions. Commission International de l'Eclairage chromaticity coordinates showed emission in the near‐white region for the proposed phosphors under different excitations. In addition, the current–voltage (I–V) characteristics of the NaCa1−xPO4:xDy3+ (x = 1.5 mol%) phosphor‐coated silicon solar cell and an uncoated solar cell were investigated under a solar simulator. The I–V characteristics of the proposed phosphor‐coated silicon solar cell showed enhancement in solar cell efficiency by ~7.92%. The entire studies and their outcomes showed that synthesized phosphors have potential as white light emitting diodes and for solar applications.
Making family, making school – dialogical processes in gentrification
Authors: Lima Cristian , Hviid Pernille 
Published: November 2021

AbstractWe investigate abandonment of certain public schools in areas of gentrification in Copenhagen and the processes meant to repair such community ruptures. Theoretically, the study builds on socio‐cultural psychology and dialogism. The intervention conducted built on the premises of meaning‐making, dialogue and collaboration in and across the community and its institutions and citizens. The deep interdependency between making a family and making a school stood out. While the schools struggled to survive, the families in question struggled tirelessly to form the kind of family they wanted to be. The analysis centres on processes of initiating and promoting sustainable collective processes of meaning‐making in a community. ‘Sustainability’ refers in our case to the construction of practices that is meaningful to various groups of actors (e.g. children, families and professionals in institutions) given the local challenges and resources in their community. The study aims at shedding light on the dialogical processes and the construction of local community qualities.
Microbial L‐ and D‐Lactate Selective Oxidoreductases as a Very Prospective but Still Uncommon Tool in Commercial Biosensors
Authors: Smutok Oleh , Kavetskyy Taras , Gonchar Mykhailo , Katz Evgeny 
Published: November 2021

AbstractLactic acid, being in natural L‐form, is an almost universal metabolite of all living organisms. It is also an important biotechnological product used as a food additive, component of many industrial products, pharmaceuticals, cosmetics and, recently, as a monomer for the production of biodegradable poly‐L‐lactate. D‐Lactate is another stereoisomer known as a by‐product of some fermentation processes and formed also in the colon and blood under some pathophysiological conditions, namely, diabetes, short bowel syndrome, and others. Thus, both lactate stereoisomers are important biomarkers of some diseases, indicators of food quality, and markers of sport medicine for assessing the level of athlete training. Therefore, the development of new highly selective biosensors for the routine analysis of these biomarkers is very important. Some electrochemical biosensors for lactate analysis are commercialized and exploit bacterial enzymes: NAD+‐dependent L‐ or D‐lactate dehydrogenases or lactate oxidase. The yeast cells produce another type of very specific response toward lactate enzymes: L‐lactate:cytochrome c‐oxidoreductase (EC 1.1.2.3, flavocytochrome b2, FC b2) and D‐lactate: ferricytochrome c‐oxidoreductase (EC 1.1.2.4, DLDH), which are specific toward L‐ and D‐ stereoisomers of lactate, respectively. The main properties of both enzymes are absolute selectivity toward lactate isomers and non‐specificity to the nature of electron acceptors, as well as an ability to direct electron transfer to electrodes. The listed properties make the enzymes very suitable for their application in electrochemical biosensorics. This Review is devoted mainly to the characterization of FC b2‐ and DLDH‐based laboratory prototypes of electrochemical biosensors to promote scientific and possible commercial interest in such L‐lactate‐ and D‐lactate‐specific bioanalytical tools.
Optimizing an Electrochemical Protocol for Quantitative Analysis of Ascorbic Acid in Dietary Supplements
Authors: Wilson Patrick , Sorto Sabrina , Apawu Aaron K. 
Published: November 2021

AbstractElectroanalytical techniques are versatile and dynamic tools used extensively in research and industrial applications; however, they are not adequately covered in the undergraduate chemistry curriculum. Herein, a fast‐scan cyclic voltammetry (FSCV) protocol is presented as a simple but efficient method of analysis that can be incorporated into analytical chemistry labs to demonstrate the utility and versatility of electrochemical techniques. The simplicity of ascorbic acid's electrochemistry makes it an excellent candidate for evaluating an electroanalytical method. In this work, flow cell‐based FSCV was used to measure the ascorbic acid content in a dietary supplement. The protocol involved optimization of the excitation waveform and scan rate, and external standard calibration analysis. The method was evaluated using spike recovery and a standard addition analysis as a secondary method of validation. The external calibration method exhibited excellent accuracy (relative error=−0.6 %, Recovery=100.5 %), suggesting no significant matrix effect, high precision (RSD=±0.4 %) and sensitivity (m=2224.4 nA mm−1). These observations were comparable to results from the standard addition method as revealed by the statistical analysis. Overall, this work demonstrates the use of a cutting‐edge electroanalytical technique in quality control.
Probability density of irradiance for Electromagnetic waves propagating through the solar corona
Authors: Shishter Yousef Mostafa 
Published: November 2021

SummaryDeep space exploration missions require the modelling of deep space communication channels. Due to the turbulent nature of space channels, propagating electromagnetic waves suffer from fading‐induced turbulence. In particular, scintillation effects are imparted on the intensity of electromagnetic beam wave propagating through the solar corona. Thus, it is imperative to determine the wave intensity distribution. Often, distributions derived and verified for terrestrial channels are applied to wave propagation through deep space channels. However, this neglects the specific nature of the physical processes in the channel. For example, to incorporate the events of solar inferior and solar superior conjunctions, the introduced statistical distribution should be valid over a large‐range, spanning weak to strong, scintillation conditions. Moreover, the solar corona physical parameters should be clearly related to the distribution parameters. Such a theoretical model can be derived based on Rytov solution, the solar wind speed distribution and the space permeating plasma electron density variation. The resultant wave intensity distribution is compared with the Rician, the Nakagami and the inverse Gaussian–gamma distributions for different scintillation conditions.
Sixteen capillary electrophoresis applications for viral vaccine analysis
Authors: Geurink Lars , van Tricht Ewoud , van der Burg Debbie , Scheppink Gerard , Pajic Bojana , Dudink Justin , Sänger–van de Griend Cari 
Published: November 2021

AbstractA broad range of CE applications from our organization is reviewed to give a flavor of the use of CE within the field of vaccine analyses. Applicability of CE for viral vaccine characterization, and release and stability testing of seasonal influenza virosomal vaccines, universal subunit influenza vaccines, Sabin inactivated polio vaccines (sIPV), and adenovirus vector vaccines were demonstrated. Diverse CZE, CE‐SDS, CGE, and cIEF methods were developed, validated, and applied for virus, protein, posttranslational modifications, DNA, and excipient concentration determinations, as well as for the integrity and composition verifications, and identity testing (e.g., CZE for intact virus particles, CE‐SDS application for hemagglutinin quantification and influenza strain identification, chloride or bromide determination in process samples). Results were supported by other methods such as RP‐HPLC, dynamic light scattering (DLS), and zeta potential measurements. Overall, 16 CE methods are presented that were developed and applied, comprising six adenovirus methods, five viral protein methods, and methods for antibodies determination of glycans, host cell‐DNA, excipient chloride, and process impurity bromide. These methods were applied to support in‐process control, release, stability, process‐ and product characterization and development, and critical reagent testing. Thirteen methods were validated. Intact virus particles were analyzed at concentrations as low as 0.8 pmol/L. Overall, CE took viral vaccine testing beyond what was previously possible, improved process and product understanding, and, in total, safety, efficacy, and quality.