bluuebunny/crossref_metadata_2025 huggingface dataset:
Magnetic methacrylated gelatin-g-polyelectrolyte for methylene blue sorption
Authors: Ruiz Carla , Vera Myleidi , Rivas Bernabé L. , Sánchez Susana , Urbano Bruno F.
Published: December 2020

Magnetic methacrylated gelatin grafted with anionic polyelectrolytes hydrogels removes methylene blue efficiently and easily separate with a magnet.
Synergistic effect of hierarchical nanopores in Co-doped cobalt oxide 3D flowers for electrochemical energy storage
Authors: Deng Xia , Zhang Hong , Zhang Junwei , Lei Dongsheng , Peng Yong
Published: December 2020

Hybridizing hierarchical porous transition oxides composed of nanoscale building blocks is highly desirable for improving the electrochemical performance of energy storage.
Ion-imprinted modified molecular sieves show the efficient selective adsorption of chromium(vi) from aqueous solutions
Authors: Li Junwen , Cheng Haiming
Published: December 2020

Molecular sieve 5A was modified with (3-aminopropyl) triethoxysilane (APTES) as the support matrix, on which 4-VP was used as the ionic imprinting group.
Hydrogels as artificial matrices for cell seeding in microfluidic devices
Authors: Akther Fahima , Little Peter , Li Zhiyong , Nguyen Nam-Trung , Ta Hang T.
Published: December 2020

Hydrogel-based artificial scaffolds and its incorporation with microfluidic devices play a vital role in shiftingin vitromodels from two-dimensional (2D) cell culture toin vivolike three-dimensional (3D) cell culture
Microwave-assisted synthesis of an RGO/CdS/TiO2step-scheme with exposed TiO2{001} facets and enhanced visible photocatalytic activity
Authors: Ma Zilun , Shi Liyan , Qu Wenwen , Hu Qiong , Chen Ruifang , Wang Yijun , Chen Zhen
Published: December 2020

The photocatalytic enhancement of RGO/CdS/TiO2is due to the high-energy {001} surface of TiO2and CdS forming a stepped heterojunction, which is dispersed on the surface of reduced graphene oxide.
Evaluating the comprehensive influences of heat treatment and polydimethylsiloxane on integrated performance of bamboo timber
Authors: Zhang Ying , Zhang Xin , Yu Youming , Che Wenbo , Zhang Xiaochun , Hou Junfeng
Published: December 2020

The main objective of this work is to analyse the influence of heat treatment with polydimethylsiloxane on integrated performance of bamboo timber.
Effect of heat treatment on corrosion behavior of Mg–5Gd–3Y–0.5Zr alloy
Authors: Zhang Qian , Li Quanan , Chen Xiaoya
Published: December 2020

The effects of different heat treatment processes on the microstructure and corrosion behavior of Mg–5Gd–3Y–0.5Zr (GW53K) magnesium alloy were studied by means of microanalysis, weight loss test and electrochemical test.
A simplified approach for the metal-free polymerization of propylene oxide
Authors: Vogler Charlotte , Naumann Stefan
Published: December 2020

Mild organobases and Et3B constitute an operationally simple, user-friendly catalyst setup for polymerizing propylene oxide.
Structural, optical and electronic properties of Ni1−xCoxO in the complete composition range
Authors: Baraik Kiran , Bhakar Ashok , Srihari V. , Bhaumik Indranil , Mukherjee C. , Gupta Mukul , Yadav A. K. , Tiwari Pragya , Phase D. M. , Jha S. N. , Singh S. D. , Ganguli Tapas
Published: December 2020

The optical gap of Ni1−xCoxO solid solutions neither varies linearly with Co composition nor shows any bowing in the complete composition range. The nature of this variation of the gap is governed by the position of conduction band edge.
Carbon nanotubes: functionalisation and their application in chemical sensors
Authors: Norizan Mohd Nurazzi , Moklis Muhammad Harussani , Ngah Demon Siti Zulaikha , Halim Norhana Abdul , Samsuri Alinda , Mohamad Imran Syakir , Knight Victor Feizal , Abdullah Norli
Published: December 2020

Carbon nanotubes (CNTs) have been recognised as a promising material in a wide range of applications, from safety to energy-related devices.
Coupled matrix kinetic Monte Carlo simulations applied for advanced understanding of polymer grafting kinetics
Authors: Figueira Freddy L. , Wu Yi-Yang , Zhou Yin-Ning , Luo Zheng-Hong , Van Steenberge Paul H. M. , D'hooge Dagmar R.
Published: December 2020

An innovative coupled matrix-based Monte Carlo (CMMC) concept has been applied to successfully assess the detailed description of the molecular build-up of linear and non-linear chains in the free-radical induced grafting of linear precursors chains.
Sorption enhanced dimethyl ether synthesis under industrially relevant conditions: experimental validation of pressure swing regeneration
Authors: van Kampen Jasper , Boon Jurriaan , Vente Jaap , van Sint Annaland Martin
Published: December 2020

High single-pass production of dimethyl ether from CO2-rich feedstock is demonstrated by pressure swing regeneration, allowing enormous increase in productivity.
Can we predict materials that can be synthesised?
Authors: Szczypiński Filip T. , Bennett Steven , Jelfs Kim E.
Published: December 2020

Materials discovery is a crucial yet experimentally slow and wasteful process. We discuss how discovery can be accelerated by focusing on making predictions that are synthetically realisable.
Visible-light-driven palladium-catalyzed Dowd–Beckwith ring expansion/C–C bond formation cascade
Authors: Chen Li , Guo Li-Na , Liu Shuai , Liu Le , Duan Xin-Hua
Published: December 2020

An intermolecular Dowd–Beckwith ring expansion/C–C bond formation is achieved through light-induced palladium catalysis. Not only styrenes but also the electron-rich alkenes such as silyl enol ethers and enamides were also compatible in this reaction.
BonDNet: a graph neural network for the prediction of bond dissociation energies for charged molecules
Authors: Wen Mingjian , Blau Samuel M. , Spotte-Smith Evan Walter Clark , Dwaraknath Shyam , Persson Kristin A.
Published: December 2020

Prediction of bond dissociation energies for charged molecules with a graph neural network enabled by global molecular features and reaction difference features between products and reactants.
Efficacy analysis of compartmentalization for ambient CH4 activation mediated by a RhII metalloradical in a nanowire array electrode
Authors: Natinsky Benjamin S. , Jolly Brandon J. , Dumas David M. , Liu Chong
Published: December 2020

We integrated theory with experiment to evaluate the catalytic cycle of seemingly incompatible steps enabled by nanowire array for CH4-to-CH3OH conversion, and determined the array’s efficacy in the context of microscopic compartmentalization.
Mild olefin formation via bio-inspired vitamin B12 photocatalysis
Authors: Bam Radha , Pollatos Alexandros S. , Moser Austin J. , West Julian G.
Published: December 2020

Terminal or subterminal olefins can be selectively formed from alkyl electrophiles via bio-inspired vitamin B12 photocatalysis.
Tungsten oxide-coated copper gallium selenide sustains long-term solar hydrogen evolution
Authors: Palm David W. , Muzzillo Christopher P. , Ben-Naim Micha , Khan Imran , Gaillard Nicolas , Jaramillo Thomas F.
Published: December 2020

Employs ultrathin WO3coatings on CuGa3Se5photocathodes to achieve a new durability milestone for solar hydrogen evolution on a non-silicon absorber.
Properties, performance and stability of iridium-coated water oxidation electrodes based on anodized titanium felts
Authors: Hofer André , Bochmann Sebastian , Bachmann Julien
Published: December 2020

Holistic performance characterization: not only one performance parameter, but short-term electrocatalytic proficiency in process relevant conditions combined with long-term stability.
Thermomechanically active electrodes power work-dense soft actuators
Authors: Martinez Angel , Clement Arul , Gao Junfeng , Kocherzat Julia , Tabrizi Mohsen , Shankar M. Ravi
Published: December 2020

The effect of chain extender structure and composition on the properties of liquid crystal elastomers (LCE) is presented. Compositions are optimized to design work-dense liquid metal LCE composites that are operated with 100 mW power.
Near-zero surface pressure assembly of rectangular lattices of microgels at fluid interfaces for colloidal lithography
Authors: Fernandez-Rodriguez Miguel Angel , Antonopoulou Maria-Nefeli , Isa Lucio
Published: December 2020

Rectangular lattices of microgels at interfaces self-assemble at near zero surface pressure due to attractive quadrupolar capillary interactions and steric repulsion. They can be used for soft colloidal lithography.
Resistive force theory and wave dynamics in swimming flagellar apparatus isolated fromC. reinhardtii
Authors: Goli Pozveh Samira , Bae Albert J. , Gholami Azam
Published: December 2020

In basal apparatus isolated fromC. reinhardtii, if the frequency mismatch is high, mechanical or hydrodynamic coupling cannot synchronize them.
Order-disorder transition-induced band nestification in AgBiSe2–CuBiSe2 solid solutions for superior thermoelectric performance
Authors: Jang Hanhwi , Abbey Stanley , Nam Woo Hyun , Frimpong Brakowaa , Nguyen Chien Viet , Joo Sung-Jae , Shin Ho Sun , Song Jae Yong , Cho Eugene N. , Kim Moohyun , Jung Yeon Sik , Oh Min-Wook
Published: December 2020

The AgBiSe2–CuBiSe2 system shows band nestification at high temperatures, resulting in heavy DOS effective mass while preserving electron mobility.
Insights on the dual role of two-dimensional materials as catalysts and supports for energy and environmental catalysis
Authors: Chen Li Xin , Chen Zhi Wen , Jiang Ming , Lu Zhuole , Gao Chan , Cai Guangming , Singh Chandra Veer
Published: December 2020

The application of 2D materials in catalysis has great potential, opportunities, and challenges. The dual roles (catalysts and supports) of 2D materials determine different strategies for rational design of 2D-based catalysts.
Synthesis of sulfide solid electrolytes from Li2S and P2S5 in anisole
Authors: Maniwa Riku , Calpa Marcela , Rosero-Navarro Nataly Carolina , Miura Akira , Tadanaga Kiyoharu
Published: December 2020

We report the liquid-phase synthesis of sulfide solid electrolytes from Li2S and P2S5 using anisole at 200–300 °C under microwave irradiation, in which β-Li3PS4 and Li7P3S11 were directly precipitated in anisole in 30 min.
High-performance gas sensor array for indoor air quality monitoring: the role of Au nanoparticles on WO3, SnO2, and NiO-based gas sensors
Authors: Lee Jinho , Jung Youngmo , Sung Seung-Hyun , Lee Gilho , Kim Jungmo , Seong Jin , Shim Young-Seok , Jun Seong Chan , Jeon Seokwoo
Published: December 2020

The 3 × 3 gas sensor array with different metal oxides and morphologies is fabricated to compare the sensitization effects of Au nanoparticles on various metal oxides and gases.The 3 × 3 gas sensor array with different metal oxides and morphologies is fabricated to compare the sensitization effects of Au nanoparticles on various metal oxides and gases.
3D printed carbon aerogel microlattices for customizable supercapacitors with high areal capacitance
Authors: Yuan Shijia , Fan Wei , Wang Dong , Zhang Longsheng , Miao Yue-E. , Lai Feili , Liu Tianxi
Published: December 2020

Carbon aerogel (CA) microlattices exhibits a controllable macrostructure by 3D printing as well as an interconnected porous microstructure from GP gel and presents a desirable areal and volumetric capacitance with high mass loading.
The design of phase change materials with carbon aerogel composites for multi-responsive thermal energy capture and storage
Authors: Sun Keyan , Kou Yan , Dong Hongsheng , Ye Sheng , Zhao Donghui , Liu Jian , Shi Quan
Published: December 2020

Fe-doped carbon aerogel-based composite phase change materials exhibit the ability to respond to light, electricity, and magnetism as well as temperature for multi-responsive thermal energy capture and storage.
Coordination tunes the activity and selectivity of the nitrogen reduction reaction on single-atom iron catalysts: a computational study
Authors: Jiao Dongxu , Liu Yuejie , Cai Qinghai , Zhao Jingxiang
Published: December 2020

By introducing B coordination, the catalytic performance of Fe-N4/G can be greatly enhanced.
Two-dimensional transition metal phosphorous trichalcogenides (MPX3): a review on emerging trends, current state and future perspectives
Authors: Samal Rutuparna , Sanyal Gopal , Chakraborty Brahmananda , Rout Chandra Sekhar
Published: December 2020

We review emerging trends and the state-of-the-art in 2D transition metal phosphorus chalcogenides (MPX3, X = S, Se), including their emergent applications, physicochemical properties and growth methodologies, and a perspective on future directions.
Internal field engineering of WO3 by ion channel migration with enhanced photocatalytic oxygen evolution ability
Authors: Wang Fang F. , Chen Chang D. , Wang Wei , Kang Ming L. , Gao Ying , Chen Xue B. , Zhang Jing
Published: December 2020

This study highlights the synergistic effect of IEF and junctions for the efficient carrier separation and improved photocatalytic oxygen evolution.
Advancement in graphene-based nanocomposites as high capacity anode materials for sodium-ion batteries
Authors: Thakur Amrit Kumar , Ahmed Mohammad Shamsuddin , Oh Gwangeon , Kang Hyuk , Jeong Yeseul , Prabakaran Rajendran , Vikram M. Ponrajan , Sharshir Swellam Wafa , Kim Jaekook , Hwang Jang-Yeon
Published: December 2020

This review provides a path to achieve economic, safe, and energy-efficient graphene composites as anode materials for high-energy sodium-ion batteries.
Stacking design in photocatalysis: synergizing cocatalyst roles and anti-corrosion functions of metallic MoS2 and graphene for remarkable hydrogen evolution over CdS
Authors: Liu Qian , Wang Shihong , Ren Qinhao , Li Tianyu , Tu Gaomei , Zhong Shuxian , Zhao Yuling , Bai Song
Published: December 2020

The advantages of stacking design over traditional core–shell and supported photocatalytic structures have been highlighted with CdS firstly supported by rGO and then covered with metallic MoS2 as a model catalyst.
Self-synergistic cobalt catalysts with symbiotic metal single-atoms and nanoparticles for efficient oxygen reduction
Authors: Zhou Wu , Su Hui , Wang Zijun , Yu Feng , Wang Wei , Chen Xin , Liu Qinghua
Published: December 2020

A new type of self-synergistic Co catalyst consisting of symbiotic Co single-atoms and nanoparticles (S/Co-SA–NPs) is designed for use as a highly efficient oxygen reduction reaction catalyst.
Sandwich-like multi-scale hierarchical porous carbon with a highly hydroxylated surface for flow batteries
Authors: Wang Rui , Li Yinshi , Liu Haiying , He Ya-Ling , Hao Mingsheng
Published: December 2020

A sandwich-like multi-scale pore-rich hydroxylated carbon is proposed and developed to meet both the efficient redox reactions and the stable mass-charge transports in flow batteries.
Highly efficient photocatalytic water splitting utilizing a WO3−x/ZnIn2S4 ultrathin nanosheet Z-scheme catalyst
Authors: Luo Dian , Peng Lei , Wang Yang , Lu Xiangyu , Yang Cheng , Xu Xinsheng , Huang Yucheng , Ni Yonghong
Published: December 2020

A WO3−x/ZnIn2S4 ultrathin nanosheet heterojunction with excellent photocatalytic activity for H2 evolution was synthesized via a simple two-step solution route.
Construction of cobalt oxyhydroxide nanosheets with rich oxygen vacancies as high-performance lithium-ion battery anodes
Authors: Fu Yonghuan , Li Liewu , Ye Shenghua , Yang Penggang , Liao Peng , Ren Xiangzhong , He Chuanxin , Zhang Qianling , Liu Jianhong
Published: December 2020

Hierarchical nanoporous cobalt oxyhydroxide (CoOOH) nanosheets are prepared for use as an anode material in high energy density lithium-ion batteries.
A self-powered 2D-material sensor unit driven by a SnSe piezoelectric nanogenerator
Authors: Li Peng , Zhang Zekun , Shen Wangtian , Hu Chunguang , Shen Wanfu , Zhang Dongzhi
Published: December 2020

SnSe demonstrates a higher piezoelectric output voltage than other 2D materials reported so far. We realized a solely 2D-material self-powered sensor unit.
Interface engineering in low-dimensional bismuth-based materials for photoreduction reactions
Authors: Xiong Jun , Di Jun , Li Huaming
Published: December 2020

Interface engineering over low-dimensional bismuth-based materials for photoreduction activity optimization via tuning the fine geometric and electronic structures is reviewed.
Two-dimensional conductive metal–organic frameworks with dual metal sites toward the electrochemical oxygen evolution reaction
Authors: Li Jiawen , Liu Peng , Mao Jianxin , Yan Jianyue , Song Wenbo
Published: December 2020

Electronic structure interaction between Ni–O4 and Ni–N4 sites in 2D conductive MOFs improves their intrinsic OER activity.
A highly stretchable strain sensor with both an ultralow detection limit and an ultrawide sensing range
Authors: Li Hua , Chen Jianwen , Chang Xiaohua , Xu Youquan , Zhao Guiyan , Zhu Yutian , Li Yongjin
Published: December 2020

Stretchable strain sensor with both the ultralow detection limit and ultrawide sensing range was designed by the combination of the electrospinning technique and ultrasonication anchoring technique.
A directed co-assembly of herbal small molecules into carrier-free nanodrugs for enhanced synergistic antitumor efficacy
Authors: Wang Jiacheng , Qiao Wenshu , Li Xu , Zhao Haitian , Zhang Hua , Dong Aijun , Yang Xin
Published: December 2020

The supramolecular co-assembly properties of natural small molecules were revealed and carrier-free nano-drugs without structural modification were constructed.
Recent advances in nanomaterials for colorimetric cancer detection
Authors: Wang Haixia , Wu Tingting , Li Mingqiang , Tao Yu
Published: December 2020

Colorimetric cancer detection based on nanomaterials is comprehensively overviewed including the sensing principles, targeted biomarkers, emerging nanomaterials and advanced strategies.
Controllable synthesis of exceptionally small-sized superparamagnetic magnetite nanoparticles for ultrasensitive MR imaging and angiography
Authors: Dong Pingli , Zhang Tingting , Xiang Huijing , Xu Xue , Lv Yihui , Wang Yi , Lu Chichong
Published: December 2020

The superparamagnetic iron oxide nanoparticles have broad application prospects in the diagnosis and treatment of cancer.
Magnetically actuated intelligent hydrogel-based child-parent microrobots for targeted drug delivery
Authors: Chen Weinan , Wen Yongbing , Fan Xinjian , Sun Mengmeng , Tian Chenyao , Yang Mingxuan , Xie Hui
Published: December 2020

Small intestine-targeted drug delivery by oral administration has aroused the growing interest of researchers.
Double-acceptor conjugated polymers for NIR-II fluorescence imaging and NIR-II photothermal therapy applications
Authors: Chen Yan , Sun Bo , Jiang Xinyue , Yuan Zhangyu , Chen Shangyu , Sun Pengfei , Fan Quli , Huang Wei
Published: December 2020

Nanoparticles based double-acceptor conjugated polymers were developed by conventional methods. And subsequently NPs with bright NIR-II fluorescence signals and superior NIR-II PTT efficiency were successfully applied for NIR-II FI guided NIR-II PTT.
Recent advances in ice templating: from biomimetic composites to cell culture scaffolds and tissue engineering
Authors: Qin Kankan , Parisi Cleo , Fernandes Francisco M.
Published: December 2020

We review the evolution of ice-templating process from initial inorganic materials to recent developments in shaping increasingly labile biological matter.
Ultrathin NiMn layered double hydroxide nanosheets with a superior peroxidase mimicking performance to natural HRP for disposable paper-based bioassays
Authors: Sun Yue , Xu Hai , Wang Lumin , Yu Chenyang , Zhou Jinyuan , Chen Qiang , Sun Gengzhi , Huang Wei
Published: December 2020

Ultrathin NiMn LDH was synthesized as a nanozyme for disposable paper-based bioassays, and its active centers were identified as Mn sites.
A color-tunable single molecule white light emitter with high luminescence efficiency and ultra-long room temperature phosphorescence
Authors: Ma Xiao , Jia Ling , Yang Baozhu , Li Jipeng , Huang Wei , Wu Dayu , Wong Wai-Yeung
Published: December 2020

A simple emitter could simultaneously achieve bright white light emission with high quantum yield, ultra-long phosphorescence and excitation-dependent color-tunable emission.
Ferrimagnetic and relaxor ferroelectric properties of R2MnMn(MnTi3)O12 perovskites with R = Nd, Eu, and Gd
Authors: Liu Ran , Tanaka Masahiko , Mori Hiromu , Inaguma Yoshiyuki , Yamaura Kazunari , Belik Alexei A.
Published: December 2020

A-site columnar-ordered quadruple perovskites R2MnMn(MnTi3)O12 (R = Nd, Eu, Gd) exhibit relaxor-like ferroelectric properties and ferrimagnetic transitions with large moments.
Tunneling-assisted highly sensitive and stable lead-free Cs3Bi2I9 perovskite photodetectors for diffuse reflection imaging
Authors: Li Wanjun , Liu Yujin , Gao Yuxin , Ji Zhong , Fu Yong , Zhao Chuanxi , Mai Wenjie
Published: December 2020

Lead-free perovskites exhibit low toxicity and have been investigated as new active materials for photoconversion applications.
Pressure-induced excimer formation and fluorescence enhancement of an anthracene derivative
Authors: Dai Yuxiang , Liu Haichao , Geng Ting , Ke Feng , Niu Shanyuan , Wang Kai , Qi Yang , Zou Bo , Yang Bing , Mao Wendy L. , Lin Yu
Published: December 2020

Formation and fluorescence enhancement of an excimer in a designed crystal based on an anthracene derivative are observed and studied under continuous compression.
Stacking-induced different performance of mechanochromic luminescence and room-temperature phosphorescence based on two analogous AIEgens synthesized by a green photo-oxidation reaction
Authors: Yu Yue , Chen Jianai , Tan Sijie , Zhou Changjiang , Li Weijun , Dong Yujie , Zhang Cheng
Published: December 2020

We reported two similar AIEgens obtained by photo-oxidation reaction. They exhibited different luminescence behaviors in aggregation state due to the different stacking manners, especially the distance and overlapping areas between the molecules.
Preparation of chiral luminescent liquid crystals and manipulation effect of phase structures on the circularly polarized luminescence property
Authors: Chen Youde , Lu Peng , Gui Qin , Li Zhiyan , Yuan Yongjie , Zhang Hailiang
Published: December 2020

A high efficiency circularly polarized chiral luminescent liquid crystal with tunable signal was constructed.
Synthesis, mesomorphism, photophysics and device performance of liquid-crystalline pincer complexes of gold(iii)
Authors: Parker Rachel R. , Liu Denghui , Yu Xiankang , Whitwood Adrian C. , Zhu Weiguo , Williams J. A. Gareth , Wang Yafei , Lynam Jason M. , Bruce Duncan W.
Published: December 2020

Emissive gold(iii) complexes with liquid-crystalline properties have been prepared, with most complexes showing a columnar hexagonal phase. The emissive response has been characterised in solution and in OLED devices.
Synergy of surface fluorine and oxygen vacancy of TiO2 nanosheets for O2 activation in selective photocatalytic organic transformations
Authors: Gao Guoming , Wang Ximeng , Chen Qifeng , Xie Caibo , Zheng Jie , Fan Huailin , Ma Lulu , Guan Ruifang , Fang Yanfen , Hu Xun
Published: December 2020

The improved photocatalytic activity can be mainly attributed to the synergy between FS and adjacent VO, forming the frustrated Lewis pairs (FLP) that boosts the activation of O2.
Excellent cryogenic optical thermometry based on green up-conversion of Ho3+-doped perovskite Na0.5Bi0.5TiO3 ceramics
Authors: Wang Yuzhen , Wang Yanan , Ma Chaoyang , Feng Zhe , Zuo Chuandong , Ye Wanggui , Zhao Chong , Li Yanbin , Wen Zicheng , Cao Zhiquan , Cao Zhijun , Shen Xiaofei , Wang Chong , Li Yingkui , Yuan Xuanyi , Cao Yongge
Published: December 2020

An excellent cryogenic optical thermometry performance can be obtained by the green up-conversion luminescence of Ho3+-doped Na0.5Bi0.5TiO3 ceramics.
Photothermal antenna effects derived from the one-to-one coupling nanohybrids of Au plasmonics and MoS2 semiconductors
Authors: Zou Hao Lin , Du Xiao Juan , Luo Hong Qun , Li Nian Bing , Li Bang Lin
Published: December 2020

One-to-one coupling nanostructures of Au particles and layered MoS2 are constructed. Herein, enhanced photothermal performances are promoted by the antenna effect of Au plasmonics, resulting in emerging DNA sensing assays.
Fluorescence enhancement of perovskite nanocrystals using photonic crystals
Authors: Yuan Songyan , Zhang Xinran , Cao Wenjing , Sheng Yuhang , Liu Cihui , Yu Liyan , Di Yunsong , Chen Zhihui , Dong Lifeng , Gan Zhixing
Published: December 2020

Enhancing the fluorescence of perovskite nanocrystals (PNCs) will not only boost the development of perovskite light-emitting devices (LEDs), but also broaden their applications in various photoelectronic areas.
High quantum yield boron-doped carbon dots: a ratiometric fluorescent probe for highly selective and sensitive detection of Mg2+ ions
Authors: Sadhanala Hari Krishna , Pagidi Sudhakar , Gedanken Aharon
Published: December 2020

Highly fluorescent boron-doped carbon dots were synthesized from catechol and naphthalene boronic acid by a solvothermal method. They showed violet luminescence under UV illumination and were explored for highly selective detection of Mg2+ ions, with an LOD of ~39 μM.
A new photo switchable azobenzene macrocycle without thermal relaxation at ambient temperature
Authors: Eleya Nadi , Ghosh Souvik , Lork Enno , Staubitz Anne
Published: December 2020

An azobenzene macrocycle shows no thermal relaxation of Z-isomer at 25 °C, although photochemical switching is facile.
Improving the performance of photonic transistor memory devices using conjugated block copolymers as a floating gate
Authors: Chen Yu-Che , Lin Yan-Cheng , Hsieh Hui-Ching , Hsu Li-Che , Yang Wei-Chen , Isono Takuya , Satoh Toshifumi , Chen Wen-Chang
Published: December 2020

We report the synthesis, morphology and photo-memory device applications of a block copolymer (BCP) consisting of poly(9,9-dioctylfluorene) (PFO) and polystyrene (PS).
Long-range exciton diffusion in a non-fullerene acceptor: approaching the incoherent limit
Authors: Hume Paul A. , Jiao Wanting , Hodgkiss Justin M.
Published: December 2020

Low energetic disorder enables the accurate and high-speed prediction of exciton diffusion parameters in a non-fullerene acceptor.
Separation‐based model for low‐dose CT image denoising
Authors: Chen Wenbin , Bai Junjie , Gu Xiaohua , Li Yuyan , Shao Yanling , Zhang Quan , Liu Yi , Liu Yanli , Gui Zhiguo
Published: December 2020

Low‐dose computed tomography (LDCT) image often contains mottle noise and streak artefacts, which seriously interfere with clinical diagnosis. In this study, the separation‐based (SEPB) method is proposed for mottle noise and streak artefacts suppression and structure preservation. In it, the LDCT image is decomposed into the structural image with residual mottle noise and the streak artefacts image with residual structural details by the image decomposition structural‐preserving image smoothing method. The structural image is filtered by the K‐singular value decomposition algorithm to remove the residual mottle noise, and the structural details in the streak artefacts image are extracted by the morphological component analysis theory. The extracted structural details are added to the filtered structural image to get the LDCT result image. Meanwhile, in the process of extracting the structural details, the streak artefacts dictionary learned from the streak artefacts image is corrected by the local intuitional fuzzy entropy to remove its structural atoms. The experiments are conducted on the modified Shepp–Logan phantom, the pelvis phantom and the clinical abdominal data to evaluate the proposed SEPB method. Compared to several comparative denoising methods, the experimental results show that the SEPB method has better performance in subjective visual effect and objective indicators.
Pflegeberufe in den Medien
zwischen Aufmerksamkeit
und Anerkennung –
Das Beispiel der
„Ehrenpflegas“
Authors: Fischer Florian , Boscher Claudia , Raiber Lea , Steinle Johannes , Winter Maik H.-J.
Published: December 2020

„Kassier mein Cash und chill wie ein Maulwurf.“ – So stellen
sich die Erwartung von Auszubildenden sowie die Anforderungen an Pflegeberufe dar.
Zumindest wenn man dieser Aussage aus der ersten Folge der fünfteiligen
über YouTube ausgestrahlten Miniserie „Ehrenpflegas“ Glauben
schenken mag. Als Teil einer größeren Werbekampagne möchte
das Bundesministerium für Familie, Senioren, Frauen und Jugend (BMFSJ) mit
diesem Format seit Mitte Oktober 2020 auf die neue Pflegeausbildung aufmerksam
machen. Für die vom BMFSJ als „unterhaltsam und
unkonventionell“ 1 beworbene Serie
wurde ein Handlungsstrang zusammengestellt, der auf einer Aneinanderreihung von
Punchlines unter Rückgriff auf imitierte Jugendsprache, Polarisierungen und
Ironie beruht.
Knobloch Syndrome in Siblings with Posterior Fossa Malformations Along with Cerebellar Midline Cleft Abnormality Caused by Biallelic COL18A1 Mutation: Case-Based Review
Authors: Patil Siddaramappa J. , Pande Shruti , Matalia Jyoti , Bhat Venkatraman , Kekatpure Minal , Girisha Katta Mohan
Published: December 2020

Knobloch syndrome (KS) is an autosomal recessive disorder caused by biallelic pathogenic variants in COL18A1. KS clinically manifests with the typical eye findings (high myopia, vitreoretinal degeneration, retinal detachment, and lens subluxation), variable neurological findings (occipital encephalocele, polymicrogyria, cerebellar malformations, epilepsy, and intellectual disability), and the other uncommon clinical manifestations. Literature review of all KS patients (source PubMed) was done with special reference to cerebellar abnormalities. Here, we report two siblings with typical KS with posterior fossa malformations and novel cerebellar midline cleft abnormality analyzed by whole exome sequencing. Known pathogenic homozygous variant c.2908C > T; (p.Arg970Ter) in exon 26 of COL18A1 was found as a cause for KS. These two siblings presented with early-onset severe ocular manifestations, facial dysmorphism, and variable central nervous system manifestations along with novel cerebellar midline cleft abnormality. The presence or absence of structural brain malformations and genotypes does not absolutely predict cognitive functions in KS patients. However, the presence of posterior fossa abnormality may be predictive for the development of ataxia in later life and needs further studies.
Modeling reactor-focused energy balances for multi-stage CSTR anaerobic digestion systems
Authors: Abdalah M.
Published: December 2020

This paper encompasses the development of energy balance models to determine temperature dynamic behavior in single- and two-stage anaerobic digestion systems. Modeling assumptions were made according to the reactor type, its operation, energy exchanges, thermodynamics, and kinetics, as well as involved processes, substances, and phases. Stirring, heating, stream enthalpies, and reaction energies from biochemical processes were taken as the main external inputs. The temperature effect on specific growth constants was determined with a cardinal model. A general energy balance was obtained for a non-adiabatic, non-isothermic, triphasic single stage continuous stirred tank reactor digester, and then it was adapted to the case of a two-stage biohydrogen and biomethane mass balance model to obtain a multi-stage energy balance. The model was implemented and simulated in Modelica, then compared with data from a real-life experiment consisting of the digestion of a 1% glucose solution. Concentration and temperature evolution in both stages were analyzed. Temperature changes due to reaction enthalpies were observed mainly in the first stage, hydrolysis being the predominant process at the startup, followed by sugar acidogenesis. The main mechanics of the proposed model were demonstrated, and a reasonable approximation of the expected results was obtained.
Theoretical research on surface material migration of field constrained abrasive polishing
Authors: Xue Yucheng , Wang Qian , Fan Cheng , Wang Kejun , Zhang Lei , Lu Yao
Published: December 2020

The current research on the removal mechanism of ultra-precision polishing lacks various microscopic understandings of material removal and the process of surface material migration, which hinders the development of ultra-precision polishing technology, especially field constrained abrasive polishing. In order to clarify effects of abrasives at the atomic level on material removal in the field constrained abrasive polishing, a three-dimensional molecular dynamics model is conducted to study the mechanics of ultra-precision polishing on an aluminum (Al) specimen with a diamond abrasive. In order to simulate the real polishing environment, a double abrasive polishing system is designed. The mechanism of material removal was studied by observing the surface topography, surface damage, and coordination number of the working area during polishing. The influence factors of material removal were also investigated by changing the initial velocity, incidence angle, initial force, and relative position of the double abrasives. The results show that the transverse distance and the longitudinal distance between the double abrasives make a slight difference to the number of phase transformation atoms in the double abrasive polishing system, which is directly proportional to the initial velocity, the initial force, the distance between the specimen and its closest abrasive in the Z direction, and the distance between the double abrasives in the Z direction and inversely proportional to the incident angle of the double abrasives. Finally, it is found that the force on the abrasives is the main factor that determines the removal efficiency of the field constrained abrasive polishing.
Study of an angular distribution compact low impedance Blumlein-type pulse forming network
Authors: Liu Xiao , Li Song , Peng Wei , Gao Jingming , Yang Hanwu
Published: December 2020

The pulse forming network (PFN) has the advantages of compactness and long-pulse achievability, and is widely used in military and industrial applications. In this paper, a novel Blumlein-type PFN is investigated numerically and experimentally. Specifically, the device is composed of five Blumlein-type PFN units, which are parallelly connected in the axial direction, and the LC elements of each unit are distributed in the angular direction. Dimensions of the PFN are only Φ 560 × 345 mm2 due to the novel compact structure. Small volume is necessary in military and industrial applications, especially for some mobile platforms. Electromagnetic coupling in the structure is theoretically analyzed to improve the performance of the device. Importantly, the impedance of the structure is only 1.5 Ω, which can efficiently reduce insulation difficulty at the same power level. In order to improve the performance of the PFN, a sharpening switch is added in the circuit. Simulation results show that a 170 ns quasi-square pulse is obtained on a 1.5 Ω dummy load, and the jitter of the flap-top is only about 2%. The PFN is built and preliminarily studied in our laboratory. Quasi-square pulses with a peak voltage of 3.1 kV are obtained on a water load of 2.1 Ω. The jitter of the flap-top is ∼3.9%. Experimental results show reasonable agreement with numerical analysis.
The frequency of major flooding in coastal southeast Australia has significantly increased since the late 19th century
Authors: Power Scott B. , Callaghan Jeff
Published: December 2020

Millions of Australians live in a 1500 km stretch of coastal catchments in south-east Australia. Major flooding in this region causes death, economic loss and major disruptions to the lives of its inhabitants. Concerns have been raised that anthropogenic climate change might lead, or has already led, to an increased risk of extreme rainfall and associated flooding. Images of flooding commonly appear in the media, fuelling perceptions that flood frequency has already in-creased. Here we use a new dataset that allows us to estimate reliable trends over much longer periods than has previously been the case. The statistical significance of the trends is assessed using a method that is suitable for the non-Gaussian, serially correlated flood frequency data. We identify a statistically significant, increasing trend in the frequency of major floods since the late 19th century, which contributes to a 50% increase in frequency. While possible reasons for the increase are discussed (e.g. land use change, anthropogenic climate change, natural climate variability), further research is needed to clarify the relative importance of possible contributors.
Complexification of the early modern Spanish address system: A
role for koineization?
Authors: Tuten Donald N.
Published: December 2020

The Spanish system of address pronouns suffered a
dramatic increase in complexity between the 15th and 17th centuries.
This study aims to explain how and why this change (or set of
changes) took place when and where it did by using the model of
koineization as a heuristic device. It argues that sociocultural
factors (particularly widespread social status anxiety) and the
salience of address forms played a primary role in driving the
changes forward. It also argues, however, that sociodemographic
factors associated with koineization (demographic movement and
dialect mixing) contributed significantly to the timing, rapidity,
location, and specific outcomes, including the grammaticalization of
vuestra merced to usted and
numerous other reduced forms.
Language variation and change through an experimental
lens
Authors: Fuchs Martín , Piñango Maria Mercedes
Published: December 2020

Spanish exhibits two markers to convey a
progressive meaning: the Simple Present and the
Present Progressive. The use of these markers is contextually
biased: the Simple Present requires contexts where speaker and
addressee share perceptual access to the situation
at issue, while the Present Progressive does not require such
support. We test this generalization through real-time
comprehension: the Simple Present marker in contexts
without shared perceptual access should elicit
slower reading times than within shared perceptual
access contexts. A self-paced reading study
(n = 176) in three different varieties of Spanish
(Mexican, Rioplatense, and Castilian) bears this prediction out.
Additionally, we find that the Mexican variety appears further
advanced in the Progressive-to-Imperfective
diachronic shift than its dialectal counterparts.
A socio-historical perspective on the origin and evolution of two
Afro-Andean vernaculars
Authors: Sessarego Sandro
Published: December 2020

This paper casts light on the socio-historical background
of two Afro-Andean vernaculars: Yungueño Spanish (Bolivia) and
Choteño Spanish (Ecuador). Contrary to what has been suggested in
the literature (Lipski
2008; Perez
2015; Schwegler
1999, 2014),
results indicate that a concomitance of sociodemographic factors
significantly reduced the possibility of Spanish creoles forming in
the colonial Andes. For this reason, this study provides new data
that contribute to the long-lasting debate on the evolution of the
Afro-Hispanic varieties of the Americas (McWhorter 2000; Lipski 2005; Sessarego 2019a). In particular, the
evidence here reported appears to cast serious doubts on proposals
suggesting that these and other Afro-Hispanic varieties may be
conceived of as the result of a previous (de)creolization phase
(Granda 1968

et seq.).
A set of optical techniques for studying the dynamics of a discharge in millimeter-length intervals: the development of a spark discharge in air in the pin-to-plate geometry
Authors: Almazova K I , Belonogov A N , Borovkov V V , Omarova P H , Ragimkhanov G B , Tereshonok D V , Trenkin A A , Khalikova Z R
Published: December 2020

Techniques are described and some results of experimental studies of a spark discharge in the tip-plane geometry in air at atmospheric pressure are presented. It is shown that, at the initial stage (a few nanoseconds after breakdown), the microstructure of the discharge is formed in the form of a set of a large number of microchannels. It was found that by the moment of time 20 ns the spark channel acquires a single cylindrical boundary, the electron concentration at this moment reaches a maximum value of 2-1019 cm−3, after which an intense expansion of the channel begins, and from 60 ns a shock wave leaves its boundary.
Femtosecond-laser microstructuring in transparent materials
Authors: Rupasov A E , Danilov P A , Kudryashov S I
Published: December 2020

Femtosecond laser microstructuring is a hot topic in fabrication of optical elements in transparent dielectrics. This work is devoted to direct femtosecond laser writing of surface nanostructures on calcium fluorite surface. The dependence of the period of nanostructures on the parameters of laser radiation and their optical properties were studied.
Micro-Raman spectroscopy of single-shot pulse silicon craters produced by femto-picosecond laser in air and liquid
Authors: Smirnov N A , Kudryashov S I , Rudenko A A , Nastulyavichus A A , Ionin A A
Published: December 2020

Ultra-short pulses are increasingly being used for surface treatment of materials. At the same time, it is not completely clear how a change in the duration and the medium in which ablation occurs affects the morphology of craters and the change in the phase composition of the irradiated surface. A detailed comparison of single-shot pulse silicon ablation by laser pulses (pico (10 ps) and subpicosecond (0.3 ps) duration) with a wavelength of 1030 nm in air and water, focused by a lens with a numerical aperture NA = 0.25, was demonstrated in this work. The morphology and topography of the formed craters were studied using scanning electronic microscopy. The values of the ablation thresholds were obtained. Addition, two-dimensional Raman maps were obtained and it was shown that the rim of the craters consists of nanocrystallites.
Synthesis of magnetic nanoparticles by laser ablation in a liquid and verification of their antibacterial properties
Authors: Shahov P. V. , Nastulyavichus A. A. , Khaertdinova L. F. , Kudryashov S. I. , Tolordava E. R. , Rudenko A. A. , Ionin A. A.
Published: December 2020

Nickel nanoparticles were obtained by nanosecond laser ablation in deionized water and in air in different laser regimes. The nanoparticles were characterized by scanning electron microscopy, method of dynamic light scattering, and optical spectroscopy. Solutions with the highest concentration of nanoparticles were tested for antibacterial activity. The antibacterial properties of nickel nanoparticles were demonstrated on gram-positive (S. aureus) and gramnegative (P. aeruginosa) bacteria using the LIVE/DEAD method.
Dependence of the short-wavelength cutoff in the mid-IR pulse spectrum on the interaction length in SiO2 and CaF2
Authors: Geints I Yu , Zaloznaya E D , Kompanets V O , Dormidonov A E , Chekalin S V , Kandidov V P
Published: December 2020

This paper presents the results of experimental and numerical study of the anti-Stokes wing formation and the evolution of the short-wavelength cutoff in the 1900 nm pulse spectrum during its propagation and filamentation in fused silica and calcium fluoride. It is found that during the light bullet formation the short-wavelength cutoff in the supercontinuum spectrum is shifted to the anti-Stokes region with an increase in the nonlinear optical interaction length with the medium. However, change in the short-wavelength cutoff in the formed light bullet spectrum throughout its further propagation is insignificant.
Measurements of THz and X-ray generation during metal foil ablation by TW, sub-relativistic laser pulses
Authors: Nazarov M M , Shcheglov P A , Chaschin M V , Garmatina A A , Mitrofanov A V , Sidorov-Biryukov D A , Bernier M , Muller B , Panchenko V Ya
Published: December 2020

We discovered that intensity of ∼1016 W/cm2 and 20 mJ energy in femtosecond laser pulse is enough to observe THz emission from the rear side of metal foil in a vacuum. In the same experiment for 2-10 mbar air pressure and two-color pump similar energy of THz pulse form gas plasma was detected. Comparable amplitude and spectra of THz emission are also observed in reflection from the metal foil front side. X-ray emission is also studied as a criterion of intensity optimization. For much lower (1014 W/cm2) intensity reflected THz emission was detected as a result of optical rectification in a thin metal film with 10−6 efficiency. While for sub-relativistic intensities the observed efficiency 10−5 of THz generation from metal is higher than predicted by known theories. The main benefit of THz generation in metal is the absence of yield saturation at TW level of laser energy and above.
Water vapor based dispersion management in a high-pressure gas cell
Authors: Panov N A , Shipilo D E , Kompanets V O , Nikolaeva I A , Chekalin S V , Kosareva O G
Published: December 2020

We use a mixture of a high pressure gas with a minor (about 1 percent) addition of variable density water vapor to control group velocity dispersion of a near-infrared femtosecond pulse and switch it from normal to anomalous regime in the short-wavelength vicinity of the absorption band.

We have shown numerically the formation of typical for anomalous dispersion O-wave frequency-angular spectrum with full suppression of conical emission on the short-wavelength side for 1.3-μm femtosecond pulse filamenting in the mixture of 30-bar nitrogen and 0.4-bar water vapor.
Optical frequency transfer via an ultra-stable open-air short link
Authors: Vishnyakova G A , Kudeyarov K S , Kryuchkov D S , Zhadnov N O , Khabarova K Yu , Kolachevsky N N
Published: December 2020

The 17 m atmospheric link for ultrastable optical frequency transfer is developed. The frequency instability induced by atmospheric fluctuations is reduced by more than 20 times with the help of active compensation system and reaches 2.3·10−18 at τ = 250 s. The link contribution to inaccuracy is reduced by 3 orders of magnitude and equals 1.3·10−20.
Impacts of urbanization on precipitation patterns in the greater Beijing–Tianjin–Hebei metropolitan region in northern China
Authors: Song Xiaomeng , Mo Yuchen , Xuan Yunqing , Wang Quan J , Wu Wenyan , Zhang Jianyun , Zou Xianju
Published: December 2020

We present a statistical method to quantify the contribution of urbanization to precipitation changes during 1958–2017 across the greater Beijing–Tianjin–Hebei metropolitan region in northern China. We find distinct trends in precipitation in the past six decades: decreasing in annual and summer while increasing in other seasons. The spatial patterns of precipitation show discernible terrain-induced characteristics with high values in the buffer zones of plain and mountain areas and low values in the northwestern mountainous regions. Our results indicate that although urbanization has limited impacts on the trends and spatial patterns of precipitation, it has a positive contribution to the changes in precipitation for about 80% of the comparisons conducted, especially in autumn (100%), with the negative contribution being dominant in summer (66.67%). In addition, these results are sensitive to the classifications of urban and rural stations, suggesting that how to classify urban/rural areas is a crucial step to estimate the potential contribution of urbanization to precipitation changes. These findings also support that urbanization can diversify and enhance the variations in precipitation, with urban areas becoming a secondary center along with more increasing or less decreasing trends in precipitation.