bluuebunny/crossref_metadata_2025_split huggingface dataset:
Læreruddannelsens andenordensdidaktik
Authors: Iskov Thomas 
Published: June 2020

Det særlige ved at undervise på en læreruddannelse er, at man underviser nogen, der selv skal lære at undervise. Dette giver anledning til et dobbelt didaktisk blik fra læreruddanneren eller udvikling af en andenordensdidaktik. Med afsæt i denne konstatering i læreruddannelsesforskningen, søger artiklen at besvare spørgsmålet om, hvordan denne andenordensdidaktik kan operationaliseres og udmønte sig i den didaktisk praksis på læreruddannelsen.
Som svar på dette spørgsmål udvikles en andenordensdidaktisk planlægnings- og analysemodel med afsæt i en almen didaktisk model orienteret mod folkeskolen. Modellen følges op af anbefalinger om ’modelling’ som eksemplarisk undervisning i tre forskellige betydninger, der kan bidrage til didaktikken og undervisningen på læreruddannelsen.
Accueillir les tout-petits et leur famille : premiers pas en bibliothèque
Authors: Daviron Caroline 
Published: June 2020

Bien connaître le public des 0-3 ans, ainsi que l’offre éditoriale adaptée, est très important pour une médiation réussie. En intégrant les familles dans leur diversité culturelle, l’animation « Bébés lecteurs » à la bibliothèque prend tout son sens. Nourrir l’enfant de mots, d’images et de partage permet à celui-ci de construire son imaginaire. Le tout-petit exprimant son plaisir à la découverte des albums, sa famille se trouve associée à ce moment privilégié. Quelle que soit leur culture, les parents, tout entiers dans la convivialité de l’instant, dépassent peu à peu leur éventuelle appréhension face à l’accueil du tout-petit et à l’environnement. L’offre éditoriale diversifiée et de qualité permet aux bibliothécaires de rendre cette animation « Bébés lecteurs » pleine de surprises et d’enrichissements.
Portraits d’enfance, portraits d’adolescence : pratiques de lecture et pratiques culturelles à travers les étapes du développement humain
Authors: Gareau Geneviève 
Published: June 2020

L’enfance, l’adolescence et même la préadolescence sont des moments de vie particuliers qui sont marqués, selon certaines recherches, par des pratiques de lecture et des pratiques d’activités technologiques propres à ces âges. En amont de ces pratiques, il reste le lecteur, le jeune, la personne qui vit des changements psychologiques et physiologiques propres à son étape de développement. Ces moments de changements influencent les besoins, les intérêts et les goûts en matière de lecture de ces jeunes. Connaître leurs étapes de développement et leurs besoins, c’est comprendre davantage le public des jeunes, prendre conscience de l’importance de l’étape de développement de ces usagers comme personnes et ainsi avoir la possibilité d’interagir plus profondément et dynamiquement avec eux.
À partir d’études statistiques sur les pratiques de lecture des enfants, des préadolescents et des adolescents, cet article présente ces pratiques en lien avec les étapes de développement reliées à l’âge. Une meilleure connaissance théorique des dimensions physiologique, cognitive, affective et sociale des jeunes permettra un fondement plus fin de nos pratiques académiques et professionnelles dans nos interventions auprès des jeunes.
L’adaptation d’activités pour les personnes vivant avec une déficience intellectuelle
Authors: Chalifoux Ariane 
Published: June 2020

Au début de l’année 2019, Bibliothèque et Archives nationales du Québec (BAnQ) a créé un poste de chargé de projets pour concevoir une offre de services répondant aux besoins des personnes ayant une déficience intellectuelle. Une telle offre s’inscrit dans celle, plus globale, des services offerts aux personnes en situation de handicap. L’objectif est d’analyser et de revoir les services proposés à la Grande Bibliothèque, située à Montréal, afin de les rendre plus accessibles et adaptés aux besoins réels des personnes ayant une déficience intellectuelle, ainsi que de favoriser la fréquentation de la Grande Bibliothèque par celles-ci.
Cet article présente ce qu’est la déficience intellectuelle, l’accueil réservé en bibliothèque aux personnes vivant avec une déficience intellectuelle, ainsi que pourquoi et comment créer des activités adaptées à ces usagers. Des exemples tirés de l’expérience de la Grande Bibliothèque, mais aussi d’autres institutions au Québec et à travers le monde, illustrent le propos dans une perspective d’inclusion.
Severe airport sanitarian control could slow down the spreading of COVID-19 pandemics in Brazil
Authors: Ribeiro Sérvio Pontes , Castro e Silva Alcides , Dáttilo Wesley , Reis Alexandre Barbosa , Góes-Neto Aristóteles , Alcantara Luiz Carlos Junior , Giovanetti Marta , Coura-Vital Wendel , Fernandes Geraldo Wilson , Azevedo Vasco Ariston C. 
Published: June 2020

Background
We investigated a likely scenario of COVID-19 spreading in Brazil through the complex airport network of the country, for the 90 days after the first national occurrence of the disease. After the confirmation of the first imported cases, the lack of a proper airport entrance control resulted in the infection spreading in a manner directly proportional to the amount of flights reaching each city, following the first occurrence of the virus coming from abroad.

Methodology
We developed a Susceptible-Infected-Recovered model divided in a metapopulation structure, where cities with airports were demes connected by the number of flights. Subsequently, we further explored the role of the Manaus airport for a rapid entrance of the pandemic into indigenous territories situated in remote places of the Amazon region.

Results
The expansion of the SARS-CoV-2 virus between cities was fast, directly proportional to the city closeness centrality within the Brazilian air transportation network. There was a clear pattern in the expansion of the pandemic, with a stiff exponential expansion of cases for all the cities. The more a city showed closeness centrality, the greater was its vulnerability to SARS-CoV-2.

Conclusions
We discussed the weak pandemic control performance of Brazil in comparison with other tropical, developing countries, namely India and Nigeria. Finally, we proposed measures for containing virus spreading taking into consideration the scenario of high poverty.
Evaluation of Natural Radioactive Dose Levels and Associated Annual Effective Dose Rates in Ingested Foodstuffs at Abuja, Nigeria
Authors: O. Samson D. , F. Anazia A. 
Published: June 2020

Measurement of radioactive contamination in some commonly consumed foodstuffs within the six area councils of Abuja, Nigeria was conducted in this study by means of a very sensitive and portable 3M/3-X Geiger Müller counter-based environmental radiation dosimeter. Eight different food samples were randomly selected in each of the sample locations making a total of 48 foodstuffs samples surveyed across the six area councils. The results obtained show that, the range of radiation dose levels in the analyzed samples varied from 0.01590.0001 to 0.34070.0002 μSvy-1 at Bwari; 0.14900.0001 to 0.39020.0002 μSvy-1 at AMAC; 0.00950.0001 to 0.02090.0001 μSvy-1 at Gwagwalada; 0.00570.0001 to 0.01330.0002 μSvy-1 at Kuje; 0.02740.0001 to 0.22710.0002 μSvy-1 at Abaji; Kwali was between 0.01820.0001 and 0.35030.0002 μSvy-1, and their corresponding arithmetic mean are 0.16900.0001 μSvy-1, 0.22560.0001 μSvy-1, 0.01330.0001 μSvy-1, 0.00880.0001 μSvy-1, 0.13600.0001 μSvy-1 and 0.12370.0001 μSvy-1, which gives estimated annual effective dose rates of 0.18850.0003 mSvy-1, 0.25760.0001 mSvy-1, 0.11700.0001 mSvy-1, 0.07710.0001 mSvy-1, 0.15530.0002 mSvy-1, and 0.14120.0001 mSvy-1 for Bwari, AMAC, Gwagwalada, Kuje, Abaji and Kwali area councils respectively. This finding reveals that the obtained values were sufficiently less than the maximum recommended global average exposure dose limit for environmental background (2.4 mSvy-1) and general public dose limit (1.0 mSvy-1). The radiation dose levels and dose rates associated with the intake of foodstuffs across the area councils are, therefore, relatively low and may not pose any immediate radiological health hazard to the populace, as deterministic radiation effects occur only in extreme cases.
Evaluation of Wind Potential for the Generation of Electricity in Aliero, Kebbi State
Authors: Yahaya A. A. , Bello I. M. , Mudassir N. , Mohammed I. , Mukhtar M. I. 
Published: June 2020

One of the major developments in the technology today is the wind turbine that generates electricity and feed it directly to the grid which is used in many part of the world. The main purpose of this work is to determine the wind potential for electricity generation in Aliero, Kebbi state. Five years Data (2014-2018) was collected from the metrological weather station (Campell Scientific Model), the equipment installed at Kebbi State University of Science And Technology Aliero The data was converted to monthly and annual averages, and compared with the threshold average wind speed values that can only generate electricity in both vertical and horizontal wind turbines. The highest average wind speed 2.81 m/s was obtained in the month of January and the minimum average wind speed of 1.20 m/s in the month of October. Mean annual wind speed measured in the study area shows that there has been an increase in the wind speed from 2014 which peaked in 2015 and followed by sudden decrease to a minimum seasonal value in the year 2016. The highest wind direction is obtained from the North North-East (NNE) direction. From the results of wind power density it shows that we have highest wind power density in month of January and December with 0.8635 w/ m2 and 0.8295 w/ m2 respectively, while lowest wind power density in the month of October and September with 0.6780 w/ m2 and 0.6575 w/ m2 respectively. Result of the type Wind Turbine to be selected in the study area shows that the site is not viable for power generation using a horizontal wind turbine but the vertical wind turbine will be suitable for the generation of electricity.
2D Derivative Phase Induced Growth of 3D All Inorganic Perovskite Micro–Nanowire Array Based Photodetectors
Authors: Tong Guoqing , Jiang Maowei , Son Dae‐Yong , Ono Luis K. , Qi Yabing 
Published: June 2020

AbstractA large number of derivative phases in inorganic perovskites are reported with special structures and extraordinary performances in photoelectronic device applications. The reverse phase transition between derivative phases and perovskites usually induces recrystallization or forms mixed components. In this work, derivative phase‐induced growth of the CsPbBr3 micro–nanowire (MW) array by utilizing phase transition of the 2D CsPb2Br5 phase is reported. Owing to its layered structure and phase transition, annealing of CsPb2Br5 at a temperature of 550 °C combined with solvent quenching leads to a templating effect to form a high‐quality CsBr MW array. Subsequent PbBr2 deposition and the second annealing are employed to form aligned CsPbBr3 MW arrays. Based on this method, a CsPbBr3 MW array‐based photodetector is fabricated. The large grain size, less grain boundaries, and lower surface potential of the CsPbBr3 MW array lead to high device performance with a responsivity of 7.66 A W−1, a detectivity of ≈1012 Jones, and long‐term operational stability over 1900 min.
2D Transition Metal Dichalcogenides: Design, Modulation, and Challenges in Electrocatalysis
Authors: Fu Qiang , Han Jiecai , Wang Xianjie , Xu Ping , Yao Tai , Zhong Jun , Zhong Wenwu , Liu Shengwei , Gao Tangling , Zhang Zhihua , Xu Lingling , Song Bo 
Published: June 2020

AbstractHydrogen has been deemed as an ideal substitute fuel to fossil energy because of its renewability and the highest energy density among all chemical fuels. One of the most economical, ecofriendly, and high‐performance ways of hydrogen production is electrochemical water splitting. Recently, 2D transition metal dichalcogenides (also known as 2D TMDs) showed their utilization potentiality as cost‐effective hydrogen evolution reaction (HER) catalysts in water electrolysis. Herein, recent representative research efforts and systematic progress made in 2D TMDs are reviewed, and future opportunities and challenges are discussed. Furthermore, general methods of synthesizing 2D TMDs materials are introduced in detail and the advantages and disadvantages for some specific methods are provided. This explanation includes several important regulation strategies of creating more active sites, heteroatoms doping, phase engineering, construction of heterostructures, and synergistic modulation which are capable of optimizing the electrical conductivity, exposure to the catalytic active sites, and reaction energy barrier of the electrode material to boost the HER kinetics. In the last section, the current obstacles and future chances for the development of 2D TMDs electrocatalysts are proposed to provide insight into and valuable guidelines for fabricating effective HER electrocatalysts.
Enhanced Thermoelectric Performance of n‐Type Organic Semiconductor via Electric Field Modulated Photo‐Thermoelectric Effect
Authors: Zhao Wenrui , Zhang Fengjiao , Dai Xiaojuan , Jin Wenlong , Xiang Lanyi , Ding Jiamin , Wang Xian , Wan Yan , Shen Hongguang , He Zihan , Wang Juan , Gao Xike , Zou Ye , Di Chong‐an , Zhu Daoben 
Published: June 2020

AbstractModulating photophysical processes is a fundamental way for tuning performance of many organic devices. However, it has not been explored as an effective strategy to manipulate the thermoelectric (TE) conversion of organic semiconductors (OSCs) owing to their critical requirement to carrier concentration (>1018 cm−3) and the fact of low exciton separation efficiency in single element OSCs. Here, an electric field modulated photo‐thermoelectric (P‐TE) effect in an n‐type OSC is demonstrated to realize a significant improvement of TE performance. The electrical and spectroscopy characterizations reveal that the electric field gating generates combined modulation of exciton separation, charge screening, and carrier recombination, which produces a more than ten times improvement of photoinduced carrier concentration. These coupled processes contribute to the unconventional Seebeck coefficient (S)‐electrical conductivity (σ) trade‐off relationship of the photoexcited films, therefore leading to a more than 500% enhancement in the power factor for n‐type OTE semiconductors. This work opens a unique way toward state‐of‐the‐art organic P‐TE materials for energy harvesting applications.
Recent Advances in Perovskite‐Based Building‐Integrated Photovoltaics
Authors: Batmunkh Munkhbayar , Zhong Yu Lin , Zhao Huijun 
Published: June 2020

AbstractPerovskite‐based solar cells have attracted great attention due to their low cost and high photovoltaic (PV) performance. In addition to their success in the PV sector, there has been growing interest in employing perovskites in energy‐efficient smart windows and other building technologies owing to their large absorption coefficient and color tunability. The major challenge lies in integrating perovskite materials into windows and building facades and combining them with added functionalities while maintaining their remarkable power conversion efficiencies. Herein, advances that have been made in the application of perovskites to building‐integrated photovoltaics (BIPVs) in four areas are highlighted: semitransparent windows, colorful wall facades, electrochromic windows, and thermochromic windows. In addition, the opportunities and challenges of this cutting‐edge research area and important roadmaps for the future use of perovskites in BIPVs are discussed.
In Situ TEM Study on Conversion‐Type Electrodes for Rechargeable Ion Batteries
Authors: Cui Jiang , Zheng Hongkui , He Kai 
Published: June 2020

AbstractConversion‐type materials have been considered as potentially high‐energy‐density alternatives to commercially dominant intercalation‐based electrodes for rechargeable ion batteries and have attracted tremendous research effort to meet the performance for viable energy‐storage technologies. In situ transmission electron microscopy (TEM) has been extensively employed to provide mechanistic insights into understanding the behavior of battery materials. Noticeably, a great portion of previous in situ TEM studies has been focused on conversion‐type materials, but a dedicated review for this group of materials is missing in the literature. Herein, recent developments of in situ TEM techniques for investigation of dynamic phase transformation and associated structural, morphological, and chemical evolutions during conversion reactions with alkali ions in secondary batteries are comprehensively summarized. The materials of interest broadly cover metal oxides, chalcogenides, fluorides, phosphides, nitrides, and silicates with specific emphasis on spinel metal oxides and recently emerged 2D metal chalcogenides. Special focus is placed on the scientific findings that are uniquely obtained by in situ TEM to address fundamental questions and practical issues regarding phase transformation, structural evolution, electrochemical redox, reaction mechanism, kinetics, and degradation. Critical challenges and perspectives are discussed for advancing new knowledge that can bridge the gap between prototype materials and real‐world applications.
A Garnet‐Type Solid‐Electrolyte‐Based Molten Lithium−Molybdenum−Iron(II) Chloride Battery with Advanced Reaction Mechanism
Authors: Xu Jing , Liu Kai , Jin Yang , Sun Bin , Zhang Zili , Chen Yi , Su Dawei , Wang Guoxiu , Wu Hui , Cui Yi 
Published: June 2020

AbstractSolid‐electrolyte‐based molten‐metal batteries have attracted considerable attention for grid‐scale energy storage. Although ZEBRA batteries are considered one of the promising candidates, they still have the potential concern of metal particle growth and ion exchange with the β”‐Al2O3 electrolyte. Herein, a Li6.4La3Zr1.4Ta0.6O12 solid‐electrolyte‐based molten lithium−molybdenum−iron(II) chloride battery (denoted as Li−Mo−FeCl2) operated at temperature of 250 °C, comprising a mixture of Fe and LiCl cathode materials, a Li anode, a garnet‐type Li‐ion ceramic electrolyte, and Mo additive, is designed to overcome these obstacles. Different from conventional battery reaction mechanisms, this battery revolutionarily synchronizes the reversible Fe−Mo alloying−dealloying reactions with the delithiation−lithiation processes, meaning that the porous Mo framework derived from Fe−Mo alloy simultaneously suppresses the growth of pure Fe particles. By adopting a Li anode and a Li‐ion ceramic electrolyte, the corrosion problem between the cathode and the solid electrolyte is overcome. With similar battery cost ($12 kWh−1), the theoretical energy density of Li−Mo−FeCl2 battery surpasses that of a Na−FeCl2 ZEBRA battery over 25%, to 576 Wh kg−1 and 2216 Wh L−1, respectively. Experimental results further prove this cell has excellent cycling performance (472 mAh gLiCl−1 after 300 cycles, 50 mg active material) and strong tolerance against the overcharge−overdischarge (3−1.6 V) and freezing−thawing (25−250 °C) incidents.
Bioactive‐Tissue‐Derived Nanocomposite Hydrogel for Permanent Arterial Embolization and Enhanced Vascular Healing
Authors: Hu Jingjie , Altun Izzet , Zhang Zefu , Albadawi Hassan , Salomao Marcela A. , Mayer Joseph L. , Hemachandra L. P. Madhubhani P. , Rehman Suliman , Oklu Rahmi 
Published: June 2020

AbstractTranscatheter embolization is a minimally invasive procedure that uses embolic agents to intentionally block diseased or injured blood vessels for therapeutic purposes. Embolic agents in clinical practice are limited by recanalization, risk of non‐target embolization, failure in coagulopathic patients, high cost, and toxicity. Here, a decellularized cardiac extracellular matrix (ECM)‐based nanocomposite hydrogel is developed to provide superior mechanical stability, catheter injectability, retrievability, antibacterial properties, and biological activity to prevent recanalization. The embolic efficacy of the shear‐thinning ECM‐based hydrogel is shown in a porcine survival model of embolization in the iliac artery and the renal artery. The ECM‐based hydrogel promotes arterial vessel wall remodeling and a fibroinflammatory response while undergoing significant biodegradation such that only 25% of the embolic material remains at 14 days. With its unprecedented proregenerative, antibacterial properties coupled with favorable mechanical properties, and its superior performance in anticoagulated blood, the ECM‐based hydrogel has the potential to be a next‐generation biofunctional embolic agent that can successfully treat a wide range of vascular diseases.
Efficient, Flexible, and Ultra‐Lightweight Inverted PbS Quantum Dots Solar Cells on All‐CVD‐Growth of Parylene/Graphene/oCVD PEDOT Substrate with High Power‐per‐Weight
Authors: Tavakoli Mohammad Mahdi , Gharahcheshmeh Meysam Heydari , Moody Nicole , Bawendi Moungi G. , Gleason Karen K. , Kong Jing 
Published: June 2020

AbstractUltra‐lightweight and flexible solar cells are desired for many potential applications, such as self‐powered aviation, wearable electronics, and the Internet of things. PbS quantum dots (QDs) are good candidates for this purpose due to their low‐cost and low‐temperature processing. In this work, a thin layer of parylene (1 µm) is deposited on a poly(ethylene teraphthalate) (PET) substrate using chemical vapor deposition (CVD) and is employed as a flexible substrate for PbS QDs solar cell. Here, the commonly used ITO electrode in the QDs photovoltaics (PVs) is replaced by CVD‐graphene and its wettability issue is addressed using a thin layer of oxidative CVD poly(3,4‐ethylene dioxythiophene) (oCVD PEDOT), which also works as second hole transporting layer in the device. Inverted PbS QDs device is fabricated on PET/parylene/graphene/oCVD PEDOT stack and finally by removing the PET substrate, an ultra‐lightweight PbS QDs solar cell is achieved. Using this architecture, a power conversion efficiency (PCE) of 7.1% and a power‐per‐weight of 12.3 W g−1 are achieved. Additionally, the QDs device on graphene shows good flexibility as compared to the device on PET/ITO. This work highlights the advantages of oCVD PEDOT and CVD‐graphene for the fabrication of flexible and ultralight weight photostatics.
Biomass‐Derived Aromatics by Solid Acid‐Catalyzed Aldol Condensation of Alkyl Methyl Ketones
Authors: Reif Phillip , Rosenthal Hannah , Rose Marcus 
Published: June 2020

AbstractCyclotrimerization of biomass‐based alkyl methyl ketones exhibits great potential as a route to biomass‐derived aromatics by a sustainable valorization of biorefinery streams. In this study, acetone is used as a model reagent to screen solid acid catalysts for the aldol condensation reaction to the aromatic trimer mesitylene. From a broad catalyst screening promising activity is shown by the cation exchange resin Purolite CT275DR, the beta‐zeolite H‐BEA 35, and aluminosilicate Siralox 70/170 HPV which are used to further investigate reaction parameters. Acetone conversion and mesitylene yield increase with temperature and time, while yield of the intermediate mesityl oxide decreases. This effect is also found for higher quantities of catalyst acid sites and is accompanied with an increased side product formation which negatively affects total product selectivity. Analyzing the reaction progress shows a significant drop in catalyst productivity after an initial start‐up phase. This observation is linked to a deactivation of the catalyst which involves water that is formed during the condensation reaction of acetone. Obtained results confirm the general viability of the aromatization of alkyl methyl ketones and can be considered the first step to an alternative sustainable route to biomass‐derived aromatics compared to other currently discussed routes.