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971.
Donghui Tang Shuang Tao Jinlian Ma Peijun Hu Dan Long Jun Wang Dexing Kong 《International journal of imaging systems and technology》2017,27(4):345-353
To study the effect of short cardio on obese male college students’ inhibitory control ability, we investigate difference on brain activation patterns before and after short cardio by analyzing the resting state fMRI data. The experiment results of this study show that short cardio can improve the inhibitory control ability of obese people. 相似文献
972.
Insights into the Influence of Work Functions of Cathodes on Efficiencies of Perovskite Solar Cells 下载免费PDF全文
Shizhong Yue Shudi Lu Kuankuan Ren Kong Liu Muhammad Azam Dawei Cao Zhijie Wang Yong Lei Shengchun Qu Zhanguo Wang 《Small (Weinheim an der Bergstrasse, Germany)》2017,13(19)
Though various efforts on modification of electrodes are still undertaken to improve the efficiency of perovskite solar cells, attributing to the large scope of these methods, it is of significance to unveil the working principle systematically. Herein, inverted perovskite solar cells based on indium tin oxide (ITO)/poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)/CH3NH3PbI3/phenyl‐C61‐butyric acid methyl ester (PC61 BM)/buffer metal/Al are constructed. Through the choice of different buffer metals to tune work function of the cathode, the contact nature of the active layer with the cathode could be manipulated well. In comparison with the device using Au/Al as the electrode that shows an unfavorable band bending for conducting the excited electrons to the cathode, the one with Ca/Al presents a dramatically improved efficiency over 17.1%, ascribed to the favorable band bending at the interface of the cathode with the active layer. Details for tuning the band bending and the corresponding charge transfer mechanism are given in a systematic manner. Thus, a general guideline for constructing perovskite photovoltaic devices efficiently is provided. 相似文献
973.
High Efficiency Poly(acrylonitrile) Electrospun Nanofiber Membranes for Airborne Nanomaterials Filtration 下载免费PDF全文
Riyadh Al‐Attabi Ludovic F. Dumée Lingxue Kong Jürg A. Schütz Yosry Morsi 《Advanced Engineering Materials》2018,20(1)
974.
Extremely Weak van der Waals Coupling in Vertical ReS2 Nanowalls for High‐Current‐Density Lithium‐Ion Batteries 下载免费PDF全文
975.
Simultaneous Near‐Infrared and Two‐Photon In Vivo Imaging of H2O2 Using a Ratiometric Fluorescent Probe based on the Unique Oxidative Rearrangement of Oxonium 下载免费PDF全文
976.
977.
KLEIN-64 is a lightweight block cipher designed for resource-constrained
environment, and it has advantages in software performance and hardware
implementation. Recent investigation shows that KLEIN-64 is vulnerable to differential
fault attack (DFA). In this paper, an improved DFA is performed to KLEIN-64. It is
found that the differential propagation path and the distribution of the S-box can be fully
utilized to distinguish the correct and wrong keys when a half-byte fault is injected in the
10th round. By analyzing the difference matrix before the last round of S-box, the location
of fault injection can be limited to a small range. Thus, this improved analysis can greatly
improve the attack efficiency. For the best case, the scale of brute-force attack is only 256.
While for the worst case, the scale of brute-force attack is far less than 232 with another
half byte fault injection, and the probability for this case is 1/64. Furthermore, the
measures for KLEIN-64 in resisting the improved DFA are proposed. 相似文献
978.
Pu Hu Zheyi Zou Xingwei Sun Da Wang Jun Ma Qingyu Kong Dongdong Xiao Lin Gu Xinhong Zhou Jingwen Zhao Shanmu Dong Bing He Maxim Avdeev Siqi Shi Guanglei Cui Liquan Chen 《Advanced materials (Deerfield Beach, Fla.)》2020,32(14):1907526
There is a long-standing consciousness that the rhombohedral NASICON-type compounds as promising cathodes for Li+/Na+ batteries should have inactive M1(6b) sites with ion (de)intercalation occurring only in the M2 (18e) sites. Of particular significance is that M1 sites active for charge/discharge are commonly considered undesirable because the ion diffusion tends to be disrupted by the irregular occupation of channels, which accelerates the deterioration of battery. However, it is found that the structural stability can be substantially improved by the mixed occupation of Na+/Zn2+ at both M1 and M2 when using NaV2(PO4)3 (NVP) as a cathode for Zn-ion batteries. The results of atomic-scale scanning transmission electron microscopy, analysis of ab initio molecular dynamics simulations, and an accurate bond-valence-based structural model reveal that the improvement is due to the facile migration of Zn2+ in NVP, which is enabled by a concerted Na+/Zn2+ transfer mechanism. In addition, significant improvement of the electronic conductivity and mechanical properties is achieved in Zn2+-intercalated ZnNaV2(PO4)3 in comparison with those of Na3V2(PO4)3. This work not only provides in-depth insight into Zn2+ intercalation and dynamics in NVP unlocked by activating the M1 sites, but also opens a new route toward design of improved NASICON cathodes. 相似文献
979.
980.