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331.
Li Ji Cui Xiancai Lin Qilang Lyu Xiaolin Wang Qian Yu Yan Yang Chengkai 《Journal of Solid State Electrochemistry》2023,27(6):1383-1389
Journal of Solid State Electrochemistry - As people possess more safety conscious, the issue of electrolytes is attracting concern. The gel polymer electrolyte offers high ionic conductivity,... 相似文献
332.
Shan Erfang Yu Zhiqiang Lyu Wenrong 《4OR: A Quarterly Journal of Operations Research》2023,21(3):533-545
4OR - The egalitarian principle has been widely adopted in designing solution concepts for cooperative games. In light of egalitarianism, we introduce two egalitarian values satisfying union... 相似文献
333.
Dr. Yu Zhang Dr. Shaobo Han Dr. Shangqian Zhu Dr. Ruhui Chen Tiehuai Li Dr. Zhiheng Lyu Dr. Ming Zhao Prof. Dr. Meng Gu Prof. Dr. Minhua Shao Prof. Dr. Younan Xia 《Angewandte Chemie (International ed. in English)》2023,62(52):e202314634
Surface ligands play an important role in shape-controlled growth and stabilization of colloidal nanocrystals. Their quick removal tends to cause structural deformation and/or aggregation to the nanocrystals. Herein, we demonstrate that the surface ligand based on poly(vinylpyrrolidone) (PVP) can be slowly removed from Pd nanosheets (NSs, 0.93±0.17 nm in thickness) by simply aging the colloidal suspension. The aged Pd NSs show well-preserved morphology, together with significantly enhanced stability toward both e-beam irradiation and electrocatalysis (e.g., ethanol oxidation). It is revealed that the slow desorption of PVP during aging forces the re-exposed Pd atoms to reorganize, facilitating the surface to transform from being nearly perfect to defect-rich. The resultant Pd NSs with abundant defects no longer rely on surface ligand to stabilize the atomic arrangement and thus show excellent structural and electrochemical stability. This work provides a facile and effective method to maintain the integrity of colloidal nanocrystals by slowly removing the surface ligand. 相似文献
334.
Dr. Jing Lyu Yinghao Li Zishan Li Prof. Piotr Polanowski Prof. Jeremiasz K. Jeszka Prof. Krzysztof Matyjaszewski Prof. Wenxin Wang 《Angewandte Chemie (International ed. in English)》2023,62(5):e202212235
Radical polymerization (RP) of multivinyl monomers (MVMs) provides a facile solution for manipulating polymer topology and has received increasing attention due to their industrial and academic significance. Continuous efforts have been made to understand their mechanism, which is the key to regulating materials structure. Modelling techniques have become a powerful tool that can provide detailed information on polymerization kinetics which is inaccessible by experiments. Many publications have reported the combination of experiments and modelling for free radical polymerization (FRP) and reversible-deactivation radical polymerizations (RDRP) of MVMs. Herein, a minireview is presented for the most important modelling techniques and their applications in FRP/RDRP of MVMs. This review hopes to illustrate that the combination of modelling and wet experiments can be a great asset to polymer researchers and inspire new thinking for the future MVMs experiment optimization and product design. 相似文献
335.
In signal quantization, it is well-known that introducing adaptivity to quantization schemes can improve their stability and accuracy in quantizing bandlimited signals. However, adaptive quantization has only been designed for one-dimensional signals. The contribution of this paper is two-fold: (i) we propose the first family of two-dimensional adaptive quantization schemes that maintain the same mathematical and practical merits as their one-dimensional counterparts, and (ii) we show that both the traditional 1-dimensional and the new 2-dimensional quantization schemes can effectively quantize signals with jump discontinuities, which immediately enable the usage of adaptive quantization on images. Under mild conditions, we show that by using adaptivity, the proposed method is able to reduce the quantization error of images from the presently best to the much smaller , where s is the number of jump discontinuities in the image and P () is the total number of samples. This -fold error reduction is achieved via applying a total variation norm regularized decoder, whose formulation is inspired by the mathematical super-resolution theory in the field of compressed sensing. Compared to the super-resolution setting, our error reduction is achieved without requiring adjacent spikes/discontinuities to be well-separated, which ensures its broad scope of application. We numerically demonstrate the efficacy of the new scheme on medical and natural images. We observe that for images with small pixel intensity values, the new method can significantly increase image quality over the state-of-the-art method. © 2022 Wiley Periodicals, Inc. 相似文献
336.
Acta Mechanica Sinica - The turbulent Poiseuille flow between two parallel plates is one of the simplest possible physical situations, and it has been studied intensively. In this paper, we propose... 相似文献