20 research outputs found

    Лингводидактическое описание цифр «семь» и «девять» в русском и китайском языках

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    Article exists in the aspect of the comparison of semantics and symbolism of numbers «seven» and «nine» in the Russian and Chinese Language. History and culture of Russia and China is in detail analyzed. generality and difference between the Russian and Chinese digital culture are revealed.Статья посвящена аспекту сопоставления семантики и символики цифр «семь» и «девять» в русском и китайском языках. Выявлены общность и различие между русской и китайской цифровой культурой

    Additive manufacturing of monolithic microwave dielectric ceramic filters via digital light processing

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    Microwave dielectric ceramics are employed in filters as electromagnetic wave propagation media. Based on additive manufacturing (AM) techniques, microwave dielectric ceramic filters with complex and precise structures can be fabricated to satisfy filtering requirements. Digital light processing (DLP) is a promising AM technique that is capable of producing filters with high accuracy and efficiency. In this paper, monolithic filters made from Al2O3 and TiO2, with a molar ratio of 9:1 (0.9 Al2O3-0.1 TiO2), were fabricated by DLP. The difference in the dielectric properties between the as-sintered and post-annealed samples at different temperatures was studied. The experimental results showed that when sintered at 1550 °C for 2 h and post annealed at 1000 °C for 5 h, 0.9 Al2O3-0.1 TiO2 exhibited excellent dielectric properties: εr = 12.4, Q × f = 111,000 GHz, τf = +1.2 ppm/°C. After comparing the measured results with the simulated ones in the passband from 6.5 to 9 GHz, it was concluded that the insertion loss (IL) and return loss (RL) of the filter meet the design requirements

    イブンカ コミュニケーション ニオケル ダイガクセイ ノ ジコ カイジ ニカンスル ヒカク ケンキュウ : ニッチュウカン ダイガクセイ ノ ヒカク オ チュウシン ニ

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    日中韓3ヵ国の大学生の自文化における自己開示の傾向には開示行動、開示意向、開示方法について多くの共通点がみられるが、開示動機については相違点がみられる。その傾向の日中韓比較においては各々の特徴も見出される。これらの相違や特徴を背景とした異文化コミュニケーションにおける自己開示に際して、戸惑い、誤解、文化差などが経験される。各々の自己開示は、言語的制約を内包しつつ、文化的社会的制約を常に負う。また、文化的な相互依存と文化的な相互対峙が地球規模で急速に進んでいるグローバリゼーションの状況に人間は直面している。それゆえに、文化的社会的制約を負いつつも他者を他者性として自覚し、対話的な自己開示を遂行していく人間としての在り方が絶えず問題になる。自己開示を通して人間の人間性を問題にし続けること、多文化社会に生きる人間としての在り方を絶えず志向することが大学教育において要請される

    Linguadidaktic description of numbers seven and nine in the russian and Chinese language

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    Article exists in the aspect of the comparison of semantics and symbolism of numbers «seven» and «nine» in the Russian and Chinese Language. History and culture of Russia and China is in detail analyzed. generality and difference between the Russian and Chinese digital culture are revealed

    Effect of lignin incorporation and reactive compatibilization on the morphological, rheological, and mechanical properties of ABS resin

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    In order to develop the potential application of industrial alkali lignin, its acrylonitrile-butadiene-styrene (ABS) composites were fabricated via melt blending in the absence/presence of a compatibilizer. The lignin can uniformly disperse in the ABS matrix with number-average dispersed-phase domains of sub-micron scale, ranging from 150-250 nm, as observed by scanning electron microscopy. Infrared spectroscopy reveals that strong intermolecular interactions, mainly hydrogen bonding, were responsible for their good interfacial compatibility. Rheological behaviors show that the presence of lignin restricts to some extent the relaxation of polymer chains without affecting the processing properties of ABS resin. The presence of lignin increases storage modulus and glass transition temperature (T g) of ABS. Incorporating small amounts of lignin, e.g. 5 wt%, can produce ABS composites with enhanced tensile strength and modulus, while higher loading of lignin will reduce mechanical properties. The latter, however, can be improved by reactive compatibilization

    Effect of lignin incorporation and reactive compatibilization on the morphological, rheological, and mechanical properties of ABS resin

    No full text
    In order to develop the potential application of industrial alkali lignin, its acrylonitrile-butadiene-styrene (ABS) composites were fabricated via melt blending in the absence/presence of a compatibilizer. The lignin can uniformly disperse in the ABS matrix with number-average dispersed-phase domains of sub-micron scale, ranging from 150-250 nm, as observed by scanning electron microscopy. Infrared spectroscopy reveals that strong intermolecular interactions, mainly hydrogen bonding, were responsible for their good interfacial compatibility. Rheological behaviors show that the presence of lignin restricts to some extent the relaxation of polymer chains without affecting the processing properties of ABS resin. The presence of lignin increases storage modulus and glass transition temperature (T g) of ABS. Incorporating small amounts of lignin, e.g. 5 wt%, can produce ABS composites with enhanced tensile strength and modulus, while higher loading of lignin will reduce mechanical properties. The latter, however, can be improved by reactive compatibilization

    Amorphous Sb2S3 Nanospheres In-Situ Grown on Carbon Nanotubes: Anodes for NIBs and KIBs

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    Antimony sulfide (Sb2S3) with a high theoretical capacity is considered as a promising candidate for Na-ion batteries (NIBs) and K-ion batteries (KIBs). However, its poor electrochemical activity and structural stability are the main issues to be solved. Herein, amorphous Sb2S3 nanospheres/carbon nanotube (Sb2S3/CNT) nanocomposites are successfully synthesized via one step self-assembly method. In-situ growth of amorphous Sb2S3 nanospheres on the CNTs is confirmed by X-ray diffraction, field-emission scanning electron microscopy, and transmission electron microscopy. The amorphous Sb2S3/CNT nanocomposites as an anode for NIBs exhibit excellent electrochemical performance, delivering a high charge capacity of 870 mA h g−1 at 100 mA g−1, with an initial coulomb efficiency of 77.8%. Even at 3000 mA g−1, a charge capacity of 474 mA h g−1 can be achieved. As an anode for KIBs, the amorphous Sb2S3/CNT nanocomposites also demonstrate a high charge capacity of 451 mA h g−1 at 25 mA g−1. The remarkable performance of the amorphous Sb2S3/CNT nanocomposites is attributed to the synergic effects of the amorphous Sb2S3 nanospheres and 3D porous conductive network constructed by the CNTs

    A high rate capability and long lifespan symmetric sodium-ion battery system based on a bipolar material Na2LiV2(PO4)3/C

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    Sodium ion batteries have been considered as one of the promising candidates for large-scale energy storage systems. From the application perspective of an integrated sodium ion full-cell system, it is important to develop a practical sodium-ion full-cell system with excellent cycling life, superior safety, and good rate capability to tolerate the frequent current impulses during the grid peak period. Therefore, exploring appropriate electrode materials with excellent electrochemical properties is the key issue. A rhombohedral structured two-phase Na 2 LiV 2 (PO 4 ) 3 /C nanocomposite has been successfully synthesized and employed as both cathode and anode material. It exhibits excellent electrochemical performance, including high capacity, superior rate capability, and remarkable cycling performance. In particular, it shows excellent long-term cycling stability with a capacity retention of about 83% and 100% after 3000 cycles at 10C, for the cathode and anode, respectively. Moreover, the symmetric sodium-ion full cells made of the Na 2 LiV 2 (PO 4 ) 3 /C nanocomposite have good rate capability and cycling stability, which verifies the feasibility of practical applications of the Na 2 LiV 2 (PO 4 ) 3 /C nanocomposite in sodium-ion batteries
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