bluuebunny/crossref_metadata_2025_split huggingface dataset:
Female Leaders and the “Unawakened” Male: Gender, Power, and Propaganda in North Korean Cinema
Authors: Broinowski Anna 
Published: July 2021

Abstract
North Korean cinema is distinctive in its use of female protagonists to advance the propaganda objectives of the state. While men often play “failing” characters in need of conversion to the socialist ideology which every film promotes, women frequently embody the idealized hero: exhibiting the nationalistic self-reliance to which all citizens are encouraged to aspire. The function of “Mothers” and “Maidens” as revolutionary agents of change in key historical North Korean film texts is well documented; however, the subsequent evolution of North Korean heroines, and their ideologically problematic male counterparts, requires further examination. This article underpins an analysis of the disruptive femininities in play in three contemporary North Korean films with field research conducted in Pyongyang in 2012 to expand the Mother/Maiden binary: investigating how the power dynamics between the female “leader” and “unawakened” male are used to both promote the state’s sociopolitical aims and reinforce the supremacy of the Kim regime.
Geology and Mining: An Introduction and Overview
Authors: AO Dan Wood 
Published: July 2021

Abstract
Postdevelopment studies show that, once in operation, about 70% of mines perform below the prediction of their feasibility studies, with underperformance usually caused by deficiencies in the collection of primarily geology related data prior to designing the mine and planning its operation. A major reason for these deficiencies is probably a generally narrow understanding by many geologists of metallurgy as well as geotechnical and mining engineering. Additionally, geologists often do not appreciate the types and quantities of data required by metallurgists, geotechnical engineers, and mining engineers for mine design, planning, and operations. Critically, there is commonly inadequate communication between all four professional groups. For obvious and logical reasons, the principal focus of geologists has generally been considered the discovery of a mineral deposit and subsequent resource definition and estimation of its grade and tonnage, leading to the creation of detailed geologic and grade models of the deposit. While grade and tonnage are cornerstones to mine development, equally important to mine design is the geotechnical model, which is constructed progressively over three stages of mining study using information obtained from four separate geology-related models. Enhanced understanding of mining and metallurgy by geologists plus appreciation of the metallurgical and mining uncertainties inherent in geologic data by metallurgists and geotechnical and mining engineers can contribute to significantly improved mining outcomes.
Hoje é dia de postar? Um estudo cross-cultural no Twitter
Authors: Soares João Coelho , Petroll Martin De La Martiniere , Coelho Ricardo Limongi França 
Published: July 2021

Objetivo: O estudo teve como objetivo analisar o efeito do dia da semana no engajamento dos usuários no Twitter.Método: Trata-se de uma pesquisa quantitativa, conclusiva, descritiva, com coleta de dados por observação e análise via estatística descritiva e Teste-T. Foram analisadas 51.967 postagens realizadas por 45 dos perfis profissionais com maior número de seguidores de cinco países (Argentina, Brasil, Canadá, EUA e México) em um período de 24 meses.Originalidade/Relevância: O estudo busca aprofundar sobre o engajamento em mídias sociais, em especial, o Twitter. Os resultados encontrados indicam a existência dos efeitos do dia da postagem e o país do perfil no engajamento de usuários no Twitter.Resultados: Os resultados revelaram que sábado e domingo possuem menor média de postagens, porém, apresentam maior média nas duas variáveis de engajamento. Observou-se diferença estatística significativa e positiva na variável retweet em postagens no final de semana. Já a variável favorite não apresentou diferença estatística. Os resultados mostram diferenças no comportamento dos usuários nos cinco países em relação ao engajamento.Contribuições teóricas/metodológicas: O estudo avança na literatura acerca da influência do dia da semana no engajamento e das diferenças culturais entre países no engajamento.Contribuições gerenciais/sociais: Gerencialmente, o estudo oferece insumos para o planejamento de postagens pelos profissionais de marketing visando maior engajamento numa plataforma de mídia social focada em textos, de acordo com o dia e o país em que o conteúdo é disponibilizado.
Large chromosomal deletions and impaired homologous recombination repairing in HEK293T cells exposed to polychlorinated biphenyl 153
Authors: Li Jiaci , Jing Yaqing , Liu Yi , Ru Yawei , Ju Mingyan , Zhao Yuxia , Li Guang 
Published: July 2021

Background
Polychlorinated biphenyls (PCBs) are persistent pollutants with carcinogenesis and mutagenesis effects which have been closely associated with PCBs-induced DNA damage. However, the detailed DNA damage events and corresponding pathway alterations under PCBs poisoning is still not well understood.

Methods
Whole-genome sequencing (WGS) and RNA sequencing (RNA-seq) were used to explore genome wide variations and related pathway changes in HEK293T cells that challenged by 15 µM PCB153 for 96 h in vitro. Double strand breaks (DSBs) were measured by 53BP1 foci detection, altered pathways were confirmed by quantitative real-time PCR (qPCR).

Results
The results indicated that abundant copy number variations (CNVs), including four duplications and 30 deletions, occurred in PCB153-exposed HEK293T cells. Multiple large fragment deletions (>1 Mb) involving up to 245 Mb regions on many chromosomes. Missense mutations were found in six tumor susceptibility genes, two of which are key members participating in homologous recombination (HR) repair response, BRCA1 and BRCA2. RNA-seq data showed that PCB153 poisoning apparently suppressedHR repairing genes. Besides, 15 µM PCB153 exposure significantly increased 53BP1 foci formation and effectively reduced BRCA1, RAD51B and RAD51C expression, indicating an elevated DSBs and impaired HR repairing.

Conclusion
This study firstly reported multiple large chromosomal deletions and impaired HR repairing in PCB153-exposed HEK293T cells, which provided a new insight into the understanding of early response and the mechanism underlying PCB153 genotoxicity. The chromosomal instabilities might be related to the impaired HR repairing that induced by PCB153; however, further investigations, especially on actual toxic effects of human body, are needed to confirm such speculation.
NDR/LATS‐family protein kinase genes are indispensable for embryogenesis in Arabidopsis
Authors: Yoon Hyuk Sung , Fujino Kaien , Liu Shenkui , Takano Tetsuo , Tsugama Daisuke 
Published: July 2021

NDR/LATS‐family protein kinases are conserved among eukaryotes. These protein kinases in yeast and animals phosphorylate specific targets and regulate the cell cycle. Arabidopsis thaliana has eight NDR/LATS‐family protein kinase genes (NDR1‐8), of which NDR2, NDR4, and NDR5 are involved in regulating pollen development. However, the functions of the other NDR/LATS‐family protein kinase genes in plants are unclear. Here, we show that three putative phosphorylation sites of an Arabidopsis basic leucine zipper transcription factor, VIP1, correspond to NDR/LATS‐family protein kinase phosphorylation motifs and that two of these three sites are phosphorylated by NDR2, NDR3, or NDR8 in vitro. Expression of NDR1‐8 was detected in various tissues. An NDR4 NDR6 NDR7 NDR8 quadruple mutation caused embryonic lethality These results suggest that different NDR/LATS‐family protein kinases in plants have distinct physiological roles.
Dynamic Chiro‐Optics of Bio‐Inorganic Nanomaterials via Seamless Co‐Assembly of Semiconducting Nanorods and Polysaccharide Nanocrystals
Authors: Kang Saewon , Biesold Gill M. , Lee Hansol , Bukharina Daria , Lin Zhiqun , Tsukruk Vladimir V. 
Published: July 2021

AbstractThis study demonstrates a novel chiral organization of multi‐materials from semiconducting quantum nanorods (QNRs) co‐assembled into chiral nematic polysaccharide (cellulose) nanocrystals for active manipulation of chiro‐optical light emission properties in elastomeric materials. Highly emissive anisotropic QNRs with dimensions and surface chemistry commensurate with those of biological nanocrystals facilitate seamless co‐assembly into an integrated chiral nematic organization due to preferable enthalpic interactions and pairing processes. The resulting freestanding highly emissive bio‐inorganic elastomeric materials exhibit vivid iridescence and emission with a strong optical activity that manifests itself in active and tunable chiral photoluminescence with unusually large asymmetry. Intriguingly, large‐strain reversible mechanical deformation of physically crosslinked elastomers endows fully reversible alternation of helical structural configuration and corresponding linearly and circularly polarized photoluminescence. This study provides a platform to render dynamic optical functionality with reconfigurable light propagation/emission in bio‐inorganic elastomers for futuristic applications in chiral lasing, biosensing, optical gauges, and holographic display.
Förster Resonance Energy Transfer in Linear DNA Multifluorophore Photonic Wires: Comparing Dual versus Split Rail Building Block Designs
Authors: Cunningham Paul D. , Spillmann Christopher M. , Melinger Joseph S. , Ancona Mario G. , Kim Young C. , Mathur Divita , Buckhout‐White Susan , Goldman Ellen R. , Medintz Igor L. 
Published: July 2021

AbstractDNA scaffolds provide a means to precisely organize chromophores into large biomimetic exciton networks and direct energy transport for nanoscale sensing and light‐harvesting applications. Here, a functional building block of minimal complexity that maximizes the Förster resonance energy transfer (FRET) efficiency is sought. Using a model system consisting of three FRET steps in a 4‐dye cascade: Cy3→Cy3.5→Cy5→Cy5.5, we evaluate how this building block employs multiple interacting versus redundant FRET pathways. Variants of a dual rail design, where one or two copies of each dye are aligned in rigid linear parallel rows, are compared to a split rail format, where varying degrees of spacing are introduced between the rows. The FRET processes are assessed via steady‐state, time‐resolved, and single‐molecule spectroscopy. Experiments and simulation reveal the dual rail design as more efficient than the split rail and suggest the design principle that efficient FRET networks must balance the increase in FRET rate from multiple interacting pathways with undesirable fluorescence quenching between dyes in close proximity. Hybrid fluorophore combinations are identified as a strategy to mitigate this quenching, leading to optimized dual rails capable of 50% end‐to‐end efficiency. These insights can help guide the design of functional photonic wires based on DNA scaffolds.
Design and Simulation of Innovative QCA Quaternary Logic Gates
Authors: Akbari‐Hasanjani Reza , Sabbaghi‐Nadooshan Reza 
Published: July 2021

AbstractThis paper proposes a new cell configuration for quaternary Quantum Cellular Automata (QQCA) based on the calculation of polarization. The proposed QQCA cell is based on a three‐particle system that creates instability within a cell in the gate design. Therefore, a single‐particle system or binary QCA (bQCA) technology and a two‐particle system or Ternary QCA (TQCA) technology have been used to implement quaternary logic. The proposed cell can be implemented in two layers or in one, using input and output drives. According to the dimensions of the proposed model for QQCA and simulation of basic gates, designing with this cell is quite optimal; it requires five cells in the design of the AND and OR gates and two cells in the design of the NOT gate. Based on the number of cells used in the basic gates, the total area in the AND and OR gates is 576 × 10−6 µm2 and in the NOT gate is 276 × 10−6 µm2. The base gates are fully optimized and latency is equal to 0.25 clockcycle or 0.25 × 10−12s, which is reduced in comparison with prior works. Also, the power consumption of a cell in terms of quantum calculation and the proposed model is also investigated.
Simultaneous Energy Storage and Seawater Desalination using Rechargeable Seawater Battery: Feasibility and Future Directions
Authors: Son Moon , Park Sanghun , Kim Namhyeok , Angeles Anne Therese , Kim Youngsik , Cho Kyung Hwa 
Published: July 2021

AbstractRechargeable seawater battery (SWB) is a unique energy storage system that can directly transform seawater into renewable energy. Placing a desalination compartment between SWB anode and cathode (denoted as seawater battery desalination; SWB‐D) enables seawater desalination while charging SWB. Since seawater desalination is a mature technology, primarily occupied by membrane‐based processes such as reverse osmosis (RO), the energy cost has to be considered for alternative desalination technologies. So far, the feasibility of the SWB‐D system based on the unit cost per desalinated water ($ m−3) has been insufficiently discussed. Therefore, this perspective aims to provide this information and offer future research directions based on the detailed cost analysis. Based on the calculations, the current SWB‐D system is expected to have an equipment cost of ≈1.02 $ m−3 (lower than 0.60–1.20 $ m−3 of RO), when 96% of the energy is recovered and stable performance for 1000 cycles is achieved. The anion exchange membrane (AEM) and separator contributes greatly to the material cost occupying 50% and 41% of the total cost, respectively. Therefore, future studies focusing on creating low cost AEMs and separators will pave the way for the large‐scale application of SWB‐D.
A High‐Capacity, Long‐Cycling All‐Solid‐State Lithium Battery Enabled by Integrated Cathode/Ultrathin Solid Electrolyte
Authors: Lin Yanke , Wu Maochun , Sun Jing , Zhang Leicheng , Jian Qinping , Zhao Tianshou 
Published: July 2021

AbstractCurrent all‐solid‐state lithium battery (ASSLB) manufacturing typically involves laborious fabrication and assembly of individual electrodes and solid electrolyte, which inevitably result in large interfacial resistances. Moreover, due to the unfavorable mechanical strength, most solid electrolytes are fabricated to be overly thick and are incapable of retarding lithium dendrite formation. These factors limit the attainable energy density and cyclability of ASSLBs. Here, a novel integrated cathode/solid electrolyte for scalable ASSLB manufacturing is reported by directly fabricating an ultrathin yet robust fiber network reinforced solid electrolyte on the cathode. The integrated design allows continuous ion conduction at both the interface and the entire cathode, thereby considerably reducing interfacial resistance and enabling higher cathode loading. Meanwhile, the strong fiber network endows the solid electrolyte with an ultrasmall thickness and superior dendrite suppression capability. As a result, the newly‐developed Li/LiFePO4 ASSLB achieves a high capacity of 155.2 mAh g–1 at 0.5 C and 45 °C with capacity retention of 84.3% after 500 cycles. Even with a cathode loading of 13 mg cm–2, the battery still delivers a capacity of 124.1 mAh g–1. Additionally, a pouch cell with this integrated design displays good electrochemical performance and safety, showing great promise for practical applications.
Aqueous Formate‐Based Li‐CO2 Battery with Low Charge Overpotential and High Working Voltage
Authors: Xue Hairong , Gong Hao , Lu Xueyi , Gao Bin , Wang Tao , He Jianping , Yamauchi Yusuke , Sasaki Takayoshi , Ma Renzhi 
Published: July 2021

AbstractLi‐CO2 batteries (LCOBs) are considered to be an important strategy toward efficient carbon sequestration and energy storage. However, most typical discharge products (Li2CO3 and C) are insoluble and chemically stable, and require a high charge overpotential (≈3.5–4.5 V) to be decomposed. Herein, a novel aqueous LCOB with formic acid (HCOOH) as the discharge product is proposed. The soluble HCOOH can be directly utilized in the charge process without any further purification or compression, realizing a very facile electrochemical cycle. Nanoporous Pd films with a high electrochemical surface area exhibit a high bifunctional performance toward both CO2 reduction and formic acid oxidation. Accordingly, the assembled LCOB achieves a high working potential plateau of 2.61 V whereas the charge potential is significantly lowered to 2.87 V, delivering the highest energy efficiency of 91%. The present work demonstrates a brand‐new aqueous LCOB with HCOOH as the discharge product for utilizing CO2 as power source.
Disaster medicine and pandemic response: A novel curriculum to improve understanding of complex care delivery during the COVID‐19 pandemic
Authors: Peterson Todd , Wallace Doug , Evans Joel , Edwards Andrew , Patel Aashka , Willig James , Lineback Norman , Thompson Linda 
Published: July 2021

AbstractBackgroundDespite a 2009 recommendation from the AMA that disaster medicine and public health response training should be implemented in medical schools, anywhere from 31% to 47% of medical education programs lack a formalized disaster medicine curriculum. A need for disaster medicine response training for University of Alabama medical students in an appropriately socially distanced format was identified during the COVID‐19 pandemic.MethodsOur emergency medicine faculty in collaboration with the Federal Emergency Management Agency Center for Disaster Preparedness (FEMA CDP) created and implemented a novel virtual disaster medicine and pandemic response course for third‐year medical students at the University of Alabama at Birmingham (UAB). The course was administered via a teleconferencing platform (Zoom, Zoom Video Communications, Inc.) in spring 2020 to more than 130 medical students.ResultsUsing pre‐ and postcourse surveys, we assessed a change in student confidence levels for their ability to explain topics covered in the course and their understanding of a chosen disaster. The students reported an average increase of 2.183 on a 5‐point scale, with a score of 5 representing “completely confident” and a score of 1 representing “not at all confident.” This course established the feasibility of a virtual instructor–led training (VILT) format for disaster medicine education and provided a template for the delivery of over 300 courses to more than 4,000 first responders and medical professionals through the FEMA CDP.ConclusionsThrough collaboration with the FEMA CDP, our UAB faculty were able to successfully deliver a novel virtual disaster‐preparedness and response course. The course resulted in subjective improvement of students’ content understanding while also establishing the feasibility and effectiveness of a VILT format that could be readily applied to future courses in undergraduate medical education and beyond.
Heating‐induced aggregation control for efficient sequential‐cast organic solar cells
Authors: Li Donghui , Guo Chuanhang , Zhang Xue , Du Baocai , Wang Pang , Cheng Shili , Cai Jinlong , Wang Hui , Liu Dan , Yao Huifeng , Hou Jianhui , Wang Tao 
Published: July 2021

AbstractThe aggregation and morphology within the photoactive layer is of considerable significance to boost the power‐conversion efficiency (PCE) of organic solar cells (OSCs). Herein, heating‐induced aggregation control of nonfullerene acceptor BTP‐eC7 during sequential casting was demonstrated. The large aggregates of BTP‐eC7 can be significantly reduced by sequential casting of BTP‐eC7 hot solution on the D18 fibrillar layer, and further eliminated by sequential casting of BTP‐eC7 hot solution on the D18 fibrillar layer heated on hot substrate, leading to stronger face‐on π–π stacking and appropriate phase separation within the photoactive layer to promote exciton dissociation and charge transfer. The maximum PCE of D18/BTP‐eC7 solar cells can be enhanced from 8.1% of room temperature casting to 15.9% of hot solution, hot‐substrate casting, therefore demonstrates that heating‐induced aggregation and sequential‐casting strategies are a promising approach in improving the performance of OSCs employing nonfullerene acceptors with limited solubility or strong crystallization ability.
Zn (II)‐Schiff base covalently anchored to CaO@SiO2: A hybrid nanocatalyst for green synthesis of 4H‐pyrans
Authors: Sameri Fatemeh , Bodaghifard Mohammad Ali , Mobinikhaledi Akbar 
Published: July 2021

AbstractIn this study, the Zn (II)‐Schiff base covalently anchored onto the surface of CaO@SiO2 nanoparticles. The structure of this hybrid nanomaterial (CaO@SiO2‐NH2‐Sal‐Zn) was characterized using the analytical techniques such as Fourier transform infrared spectroscopy, field emission‐scanning electron microscopy, X‐ray powder diffraction, energy‐dispersive X‐ray spectroscopy, transmission electron microscopy, thermogravimetric analysis, and inductively coupled plasma atomic mass spectrometry. The catalytic activity of this organic–inorganic hybrid nanostructure was investigated through the green synthesis of 4H‐pyran derivatives via one‐pot three‐component condensation reaction which high yields of desired products obtained under green media. The reusability experiments confirmed the stability and high performance of this hybrid nanomaterial under the reaction conditions. The retrievability of this catalyst was proved by recycling six times in reactions without significant loss in its activity. Green conditions, use of available materials, easy work‐up procedure, and high yield of products, low reaction times, and simple purification are some advantages of this protocol over earlier ones.
A triptycene derived hypercrosslinked polymer for gas capture and separation applications
Authors: Ansari Mosim , Bera Ranajit , Das Neeladri 
Published: July 2021

AbstractThis work describes facile synthesis of a porous polymeric material (T‐HCP) using readily available reagents. Specifically, T‐HCP is a thermally stable and hypercrosslinked polymer (HCP) that is essentially microporous with a high BET specific surface area (940 m2 g−1). Triptycene based polymers are known to feature internal free volume. Thus, the incorporation of triptycene units and extensive crosslinking by an external cross‐linker in T‐HCP makes it a promising adsorbent for small gas capture applications. Experimental results show that T‐HCP demonstrated good CO2 capture capacity of 132 mg g−1 (273 K, 1 bar). Molecular hydrogen storage capacity of T‐HCP is estimated to be 17.7 mg g−1 (77 K, 1 bar). T‐HCP revealed high CO2/N2 selectivity (up to 63) as well as promising CO2/CH4 (up to 9.1) selectivity suggesting its potential applicability for CO2 separation from flue and natural gases.