bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sulfonylamide‐Based Ionic Liquids for High‐Voltage Potassium‐Ion Batteries with Honeycomb Layered Cathode Oxides
Authors: Yoshii Kazuki , Masese Titus , Kato Minami , Kubota Keigo , Senoh Hiroshi , Shikano Masahiro 
Published: May 2019

AbstractThe world is at the cusp of a new era where pivotal importance is being attached to the development of sustainable and high‐performance energy storage systems. Potassium‐ion batteries are deemed not only cheap battery candidates, but also as the penultimate high‐voltage energy storage systems within monovalent‐cation chemistries. However, their performance and sustainability are undermined by the lack of suitable electrolytes for high‐voltage operation, particularly owing to the limited availability of cathode materials. Here, the potential of ionic liquids based on potassium bis(trifluoromethanesulfonyl)amide (KTFSA) as high‐voltage electrolytes is presented by assessing their physicochemical properties along with the electrochemical properties upon coupling with new high‐voltage layered cathode materials. These ionic liquids demonstrate a wide electrochemical window (around 6.0 V), making them feasible and safe electrolytes for the high‐voltage potassium‐ion battery configuration. This is proven by matching this electrolyte with new high‐voltage layered cathode compositions, demonstrating stable electrochemical performance. The present findings of electrochemically stable ionic liquids based on potassium bis(trifluoromethanesulfonyl)amide will bolster further advancement of high‐performance cathode materials, whose performance at high‐voltage regimes were apparently restricted by the paucity of suitable and compatible electrolytes.
A large series of hyalinizing trabecular tumors: Cytomorphology and ancillary techniques on fine needle aspiration
Authors: Dell’Aquila Marco , Gravina Carmen , Cocomazzi Alessandra , Capodimonti Sara , Musarra Teresa , Sfregola Stefania , Fiorentino Vincenzo , Revelli Luca , Martini Maurizio , Fadda Guido , Pantanowitz Liron , Larocca Luigi Maria , Rossi Esther Diana 
Published: May 2019

BackgroundHyalinizing trabecular tumors (HTTs) are rare, essentially benign, follicular cell–derived thyroid neoplasms characterized by a trabecular growth pattern and nuclear pseudoinclusions. Their cytological findings are misleading, because these tumors are often misinterpreted on fine needle aspirate cytology as malignant lesions, such as papillary thyroid cancer and/or medullary thyroid cancer, leading to unnecessary total thyroidectomy. The aim of this study was to analyze the cytomorphological features and application of ancillary techniques in a series of HTTs.MethodsOf 26 histological cases of HTT collected from September 2001 to December 2018, 18 cases had concomitant cytopathology. Cytological cases were processed with liquid‐based cytology (LBC). Immunocytochemistry for HBME‐1 and galectine‐3 as well as molecular testing for BRAFV600E mutation were performed on both LBC and histological specimens.ResultsThe 18 lesions with fine needle aspirate cytology ranged in size from 5 to 45 mm. Cytological diagnoses included: 1 benign lesion favoring goiter (5.5%), 4 atypia of undetermined significance (22.2%), 6 follicular neoplasms (33.3%), 5 suspicious for malignancy favoring papillary thyroid cancer (28%), and 2 malignant (11%). Hence, 89% HTT had a negative concordant immunopanel, and they were 100% wild‐type BRAFV600E.ConclusionThe majority of our HTTs (83.3%) were diagnosed in the indeterminate Bethesda categories, suggesting that their cytomorphological features pose issues for reaching a conclusive cytological diagnosis. The ancillary test results in our series support the fact that HTT is a benign neoplasm.
Blockchain for economically sustainable wireless mesh networks
Authors: Kabbinale Aniruddh Rao , Dimogerontakis Emmanouil , Selimi Mennan , Ali Anwaar , Navarro Leandro , Sathiaseelan Arjuna , Crowcroft Jon 
Published: May 2019

SummaryDecentralization, in the form of mesh networking and blockchain, two promising technologies, is coming to the telecommunications industry. Mesh networking allows wider low‐cost Internet access with infrastructures built from routers contributed by diverse owners, whereas blockchain enables transparency and accountability for investments, revenue, or other forms of economic compensations from sharing of network traffic, content, and services. Crowdsourcing network coverage, combined with crowdfunding costs, can create economically sustainable yet decentralized Internet access. This means that every participant can invest in resources and pay or be paid for usage to recover the costs of network devices and maintenance. While mesh networks and mesh routing protocols enable self‐organized networks that expand organically, cryptocurrencies and smart contracts enable the economic coordination among network providers and consumers. We explore and evaluate two existing blockchain software stacks, Hyperledger Fabric (HLF) and Ethereum geth with Proof of Authority (PoA) intended as a local lightweight distributed ledger, deployed in a real city‐wide production mesh network and in laboratory network. We quantify the performance and bottlenecks and identify the current limitations and opportunities for improvement to serve locally the needs of wireless mesh networks, without the privacy and economic cost of relying on public blockchains.
Directionality of Halogen Bonds: An Interacting Quantum Atoms (IQA) and Relative Energy Gradient (REG) Study
Authors: Orangi Nasim , Eskandari Kiamars , Thacker Joseph C. R. , Popelier Paul L. A. 
Published: May 2019

AbstractInteracting Quantum Atoms (IQA) and Interacting Quantum Fragments (IQF) analyses are used to study
(X=Cl and Br) model complexes in order to determine the origin of halogen bond directionality. IQA allows for the calculation of intra‐ and interatomic classical and exchange‐correlation energies, which can be used to determine the energetic nature of the changes that occur when deviating from the preferred halogen bond approach. The Relative Energy Gradient (REG) method is also applied to rank the IQA energies and reveal which energy contributions best describe the total behavior of the system. Indeed, all the pairwise interactions and atomic self‐energies are angularly dependent; some terms favor the linear structure and some tend toward nonlinear arrangements. For instance, when the C−X−N angle is altered, the halogen‐nitrogen interaction energy behaves like the total energy of the system while the carbon‐nitrogen interaction works against the total energy profile. Furthermore, the REG values reveal that the contribution of the halogen‐nitrogen interaction to the total behavior of the system is small. Instead, the secondary interactions (e. g., fluorine‐nitrogen and carbon‐hydrogen interactions) and atomic self‐energies are mainly responsible for the angular preference of these halogen bonds. Finally, IQF calculations followed by REG analysis reveal the importance of the self‐energy of the fragments.
Submarine channels ‘swept’ downstream after bend cutoff in salt basins
Authors: Covault Jacob A. , Sylvester Zoltán , Hudec Michael R. , Ceyhan Can , Dunlap Dallas 
Published: May 2019

AbstractChannel‐bend expansion and downstream translation, as well as vertical movements by aggradation and incision, set the stratigraphic architecture of channelized depositional systems. Early work on submarine‐channel evolution has suggested that downstream translation is rare. It is proposed here that downstream translation of bends might be common in deep‐water salt‐tectonic provinces, where complex topography can localize channel pathways that promote meander cutoffs and the generation of high‐curvature bends. Three‐dimensional seismic‐reflection data from a region with salt‐influenced topography in the Campos Basin, offshore Brazil, is used to characterize the structural geometry of a salt diapir and stratigraphic architecture of an adjacent submarine‐channel system that extends for 18 km. The combined structural and stratigraphic evolution is interpreted, including meander‐cutoff development near the salt diapir followed by ~10 km of downstream translation of a channel bend. The stratigraphic evolution is tested with a simple numerical model of channel meandering. This integrated subsurface characterization and stratigraphic modelling study sheds light on the processes and controls of submarine‐channel downstream translation, which might be common in rapidly deforming settings, such as salt basins, that promote localized subsidence, meander cutoffs, and rapidly translating, high‐curvature bends.
Counter‐argument self‐efficacy predicts choice of belief‐defense strategies
Authors: Goldberg Matthew H. , Carmichael Cheryl L. , Hardin Curtis D. 
Published: May 2019

AbstractResearch has identified many strategies people use to defend against belief‐inconsistent information. However, little research has identified factors that predict which defense strategy people will use when more than one is available. Two experiments tested whether people choose to counter‐argue belief‐inconsistent information because they believe arguing will be successful, but resort to weaker defense strategies because they believe arguing will be unsuccessful. Exposure to strong versus weak belief‐inconsistent information caused a decrease in counter‐arguing and an increase in ignoring (Experiment 1) or claiming a belief to be a matter of opinion (untestable) rather than a matter of fact (testable; Experiment 2). Consistent with self‐efficacy theory, expectations of successful counter‐arguing was the mechanism responsible for both effects. When people feel less capable of successfully counter‐arguing because the information is too difficult to refute, they resort to epistemically weaker defense strategies in order to preserve their belief.
A performance comparison of serial and parallel solar‐assisted heat pump heating systems in Xi'an, China
Authors: Huan Chao , Wang Fenghao , Li Shengteng , Zhao Yujiao , Liu Lang , Wang Zhihua , Ji Changfa 
Published: May 2019

AbstractIn this study, a TRNSYS model for a solar‐assisted heat pump (SAHP) water heating system for a university bathroom in Xi'an was developed and validated through experimental measurements. Under the typical meteorological conditions in Xi'an, a comparative analysis of the performance of the serial indirect expansion SAHP (IDX‐SAHP) system and the parallel IDX‐SAHP system during different seasons was conducted using the validated model. The results demonstrated that for annual operation, the parallel IDX‐SAHP system showed better performance in the Xi'an district compared to the serial system. Under the same heating load, the average coefficient of performance (COP) of the serial IDX‐SAHP system was 3.23 and that of the parallel IDX‐SAHP system was 4.34. In particular, during summer and the transition season, the parallel IDX‐SAHP system showed large advantages, mainly owing to a larger part of the heating load being provided by the solar collector. However, the serial IDX‐SAHP system showed a higher efficiency than that of the parallel IDX‐SAHP system during winter conditions.
Techno‐economic assessment of solar photovoltaic integration into national grids: A case study of Burkina Faso
Authors: Ouedraogo Bachir Ismael , Yamegueu Daniel 
Published: May 2019

AbstractTo promote a low‐carbon society, it is urgent to better integrate renewable energies into energy supply systems. This paper examines the impact of solar photovoltaic (PV) integration into the national electrical grid in Burkina Faso on the electricity production cost. The analysis is based on the levelized cost of electricity (LCOE) technique. Several levels of PV integration have been considered namely 20%, 40%, 60%, and 80% of the total installed capacity. First, the results revealed all the configurations with PV integration are more attractive and cost‐effective compared with the conventional diesel standalone electricity system. The sensitivity analysis shows that the configuration with 80% PV is the most attractive when compared to the other ones as it has the lowest LCOE and CO2 emissions compared with the other scenarios. This paper also shows that in the context of rising fuel prices and environmental concern, the electricity production based on diesel standalone system is not a viable solution for Burkina Faso at the moment. Finally, the results revealed that subsidies offered by the government of Burkina Faso to support the electricity production cost will be more effective for a system with PV integration. This paper gives detail highlights of solution for policymakers to make useful investment in solar energy and widen the access to electricity in Burkina Faso.
Transition Cycles during Operation of a Reversible Solid Oxide Electrolyzer/Fuel Cell (rSOC) System
Authors: Aicart J. , Di Iorio S. , Petitjean M. , Giroud P. , Palcoux G. , Mougin J. 
Published: May 2019

AbstractReversible high temperature solid oxide cells (rSOC) can be operated both in the fuel cell (SOFC) and the electrolysis mode (SOEC). This specificity is a promising way to either store intermittent renewable energy surpluses by producing H2, or generate electricity from H2 or any other fuel locally available (CH4, biogas) when demand overtakes the local production. Therefore, rSOC technology could reinforce autonomy and flexibility in buildings, eco‐districts, up to industrial sites and local energy grids powered by intermittent renewable energies. Such a storage solution complements batteries, displays flexible energy storage durations, from a few hours up to seasonal cycles, and allows decorrelating power and storage capacity. Nonetheless, experiments are needed to assess whether rSOC systems can accommodate the surrounding environment and switch rapidly between various power levels and operating modes.An rSOC system has been built and its ability to operate in both electrolysis and fuel cell modes has been demonstrated. The present work is focused on transitioning between 3 operating modes (SOEC, SOFC operated in H2, SOFC operated in CH4), each displaying 3 power levels. The results show that all transition cycles could be done in 3 to 10 min without negatively affecting short term stack performances.
Molecular characteristics of poorly differentiated chordoma
Authors: Shih Angela R. , Chebib Ivan , Deshpande Vikram , Dickson Brendan C. , Iafrate A. John , Nielsen G. Petur 
Published: May 2019

AbstractPediatric poorly differentiated chordoma is a subtype of chordoma with a much more aggressive clinical course and has been characterized by loss of SMARCB1. This study characterizes the molecular features of these tumors in comparison to conventional chordoma. A search of records between 1990 and 2017 at Massachusetts General Hospital identified two patients with sufficient excess tissue for molecular analysis and a third patient diagnosed with a highly cellular conventional chordoma. The three tumors were sent for array comparative genomic hybridization for genome‐wide copy number variants; multiplex PCR for single‐nucleotide variants; and RNA‐sequencing for fusions. Poorly differentiated chordoma showed chromosome 22q loss, including SMARCB1, with no identifiable mutations on multiplex PCR. The cellular conventional chordoma showed a complex pattern of chromosomal gains and losses involving 12 chromosomes, and an RB1 mutation at low allelic frequency. RNA‐Seq identified no disease‐defining gene fusion events. Poorly differentiated chordoma appears to represent a distinct type of tumor that is genetically unrelated to conventional chordoma. Recognition of this subtype is important because these malignancies should be treated aggressively with multimodality therapy, and possibly targeted therapy.
Quantum Dots for Hybrid Energy Harvesting: From Integration to Piezo‐Phototronics
Authors: Cho Yuljae , Pak Sangyeon , An Geon‐Hyoung , Hou Bo , Cha SeungNam 
Published: May 2019

AbstractEnergy harvesting, which converts wasted environmental energy into electricity by utilizing various physical effects, hasattracted tremendous research interests as is one of the key technologies to realize advanced electronics in the future. In this review, we introduce recent progress in the field of hybrid energy harvesting technology. In particular, we focus on a quantum dots (QD)‐based hybrid energy harvesting device. Attributed to fascinating material properties that QD possess, employment of QDs into hybrid energy harvesting has shown great potential for independent and sustainable energy supply.First, an integration of a QD solar cell into a mechanical energy harvester is discussed to harness different types of environmental energy sources simultaneously. Second, a comprehensive explanation of a piezotronic and piezo‐phototronic effect is provided, which is followed by QD‐based piezo‐phototronic applications. Finally, we summarize recent progress that has been made in energy harvesting technology involving a photovoltaic and piezo/triboelectric effect
Penile‐preserving surgery for male distal urethral carcinoma followed by buccal mucosa urethroplasty
Authors: Kitamura Yosuke , Horiguchi Akio , Ojima Kenichiro , Kawamura Kazuki , Shinchi Masayuki , Asano Tomohiko , Ito Keichi , Azuma Ryuichi 
Published: May 2019

IntroductionWe report a case of distal urethral carcinoma treated with segmental urethral excision and reconstruction by staged buccal mucosa urethroplasty.Case presentationA 60‐year‐old man presented with difficulty urinating and a palpable mass on the ventral side of his penis. He was diagnosed as having localized distal urethral carcinoma (cT2N0M0) and underwent penile‐preserving surgery with staged urethroplasty using buccal mucosa as substitute tissue. The pathological diagnosis was squamous cell carcinoma of the urethra (T2) with negative surgical margin. At 2 years of follow‐up, there was no recurrence or metastasis, he could void in a standing position with an acceptable urinary stream, and he found the appearance of his external genitalia acceptable.ConclusionIn cases of distal primary urethral carcinoma, urethroplasty using buccal mucosa graft could be alternative treatment option providing a better postoperative quality of life.
Regulation of tRNA‐dependent translational quality control
Authors: Steiner Rebecca E. , Ibba Michael 
Published: May 2019

AbstractTranslation is the most error‐prone process in protein synthesis; however, it is important that accuracy is maintained because erroneous translation has been shown to affect all domains of life. Translational quality control is maintained by both proteins and RNA through intricate processes. The aminoacyl‐tRNA synthetases help maintain high levels of translational accuracy through the esterification of tRNA and proofreading mechanisms. tRNA is often recognized by an aminoacyl‐tRNA synthetase in a sequence and structurally dependent manner, sometimes involving modified nucleotides. Additionally, some proofreading mechanisms of aminoacyl‐tRNA synthetases require tRNA elements for hydrolysis of a noncognate aminoacyl‐tRNA. Finally, tRNA is also important for proper decoding of the mRNA message by codon and anticodon pairing. Here, recent developments regarding the importance of tRNA in maintenance of translational accuracy are reviewed. © 2019 IUBMB Life, 2019 © 2019 IUBMB Life, 71(8):1150–1157, 2019
Unveiling the nonlinear optical response of Trictenotoma childreni longhorn beetle
Authors: Mouchet Sébastien R. , Verstraete Charlotte , Kaczmarek Anna M. , Mara Dimitrije , van Cleuvenbergen Stijn , Van Deun Rik , Verbiest Thierry , Maes Bjorn , Vukusic Pete , Kolaric Branko 
Published: May 2019

AbstractThe wings of some insect species are known to fluoresce under illumination by ultraviolet light. Their fluorescence properties are however, not comprehensively documented. In this article, the optical properties of one specific insect, the Trictenotoma childreni yellow longhorn beetle, were investigated using both linear and nonlinear optical (NLO) methods, including one‐ and two‐photon fluorescence and second harmonic generation (SHG). These three distinct optical signals discovered in this beetle are attributed to the presence of fluorophores embedded within the scales covering their elytra. Experimental evidence collected in this study indicates that the fluorophores are non‐centrosymmetric, a fundamental requirement for SHG. This study is the first reported optical behavior of this type in insects. We described how NLO techniques can complement other more convenient approaches to achieve a more comprehensive understanding of insect scales and integument properties.
In vitro toxicity assessment of hydrogel patches obtained by cation‐induced cross‐linking of rod‐like cellulose nanocrystals
Authors: Meschini Stefania , Pellegrini Evelin , Maestri Cecilia Ada , Condello Maria , Bettotti Paolo , Condello Giancarlo , Scarpa Marina 
Published: May 2019

AbstractWith the purpose of designing active patches for photodynamic therapy of melanoma, transparent and soft hydrogel membranes (HMs) have been fabricated by cation‐induced gelation of rod‐like cellulose nanocrystals (CNCs) bearing negatively charged carboxylic groups. Na+, Ca2+, Mg2+ have been used as cross‐linkers of cellulose nanocrystal (CNC). The biosafety of this material and of its precursors has been evaluated in vitro in cell cultures. Morphological changes, cell organelles integrity, and cell survival with the tetrazolium salt reduction (MTT) assay were utilized as tests of cytotoxicity. Preliminary investigation was performed by addition of the hydrogel components to the cell culture medium and by incubations of the CNC‐HM in direct and indirect contact with a confluent monolayer of A375 melanoma cells. Direct contact assays suffered from interference of physical stress. Careful evaluation of cytotoxicity was obtained considering the overall picture provided by microscopy and biochemical tests performed with the CNC‐HM in indirect contact with two melanoma cell lines (A375, M14) and human fibroblasts. CNCs have been demonstrated to be a safe precursor material and CNC‐HMs have a good biocompatibility provided that the excess of cations, in particular of Ca2+ is removed. These results indicate that CNC and can be safely used to fabricate biomedical devices such as transparent hydrogel patches, although attention must be paid to the fabrication procedure.