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Security analysis of satellite-to-ground reference-frame-independent quantum key distribution with beam wandering

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Chinese Physics B 2024年第8期33卷 192-201页

作者：周淳赵燕美杨晓亮陆宜飞周雨姜晓磊汪海涛汪洋李家骥江木生汪翔张海龙李宏伟鲍皖苏 Henan Key Laboratory of Quantum Information and Cryptography SSF IEUZhengzhou 450001China Synergetic Innovation Centre of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

The reference-frame-independent(RFI)quantum key distribution(QKD)is suitable for satellite-based links by removing the active alignment on the reference ***,how the beam wandering influences the performance of RFI-QKD remains a pending issue in satellite-to-ground *** this paper,based on the mathematical model for characterizing beam wandering,we present the security analysis for satellite-to-ground RFI-QKD and analytically derive formulas for calculating the secret key rate with beam *** simulation results show that the performance of RFI-QKD is better than the Bennett–Brassard 1984(BB84)QKD with beam wandering in asymptotic ***,the degree of influences of beam wandering is specifically presented for satellite-to-ground RFI-QKD when statistical fluctuations are taken into *** work can provide theoretical support for the realization of RFI-QKD using satellite-to-ground links and have implications for the construction of large-scale satellite-based quantum networks.

关键词： quantum key distribution satellite-to-ground beam wandering

Non-Smooth Morphologies of Typical Plant Leaf Surfaces and Their Anti-Adhesion Effects

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Journal of Bionic Engineering 2007年第1期4卷 33-40页

作者： Lu-quan Ren Shu-jie Wang Xi-mei Tian Zhi-wu Han Lin-na yan zhao-mei Qiu Key Laboratory of Terrain-Machine Bionics Engineering （Ministry of Education China） Jilin University （Nanling Campus） Changchun 130022 P. R. China

The micromorphologies of surfaces of several typical plant leaves were investigated by scanning electron microscopy（SEM）. Different non-smooth surface characteristics were described and classified. The hydrophobicity and anti-adhesion of non-smooth leaf surfaces were quantitatively measured. Results show that the morphology of epidermal cells and the morphology and distribution density of epicuticular wax directly affect the hydrophobicity and anti-adhesion. The surface with uniformly distributed convex units shows the best anti-adhesion, and the surface with regularly arranged trellis units displays better anti-adhesion. In contrast, the surface with randomly distributed hair units performs relatively bad anti-adheslon. The hydrophobic models of papilla-ciliary and fold-setal non-smooth surfaces were set up to determine the impacts of geometric parameters on the hydrophobicity. This study may provide an insight into surface machine molding and apparent morphology design for biomimetics engineering.

关键词： bionics non-smooth leaf surface hydrophobicity anti-adhesion

Engineering morphologies of cobalt oxide/phosphate-carbon nanohybrids for high-efficiency electrochemical water oxidation and reduction

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Journal of Energy Chemistry 2021年第1期30卷 139-146,I0005页

作者： Shan-Shan Xu Xian-Wei Lv yan-mei zhao Tie-Zhen Ren Zhong-Yong Yuan Hebei Provincial Key Laboratory of Green Chemical Technology&High Efficient Energy Saving School of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300130China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) School of Materials Science and EngineeringNankai UniversityTianjin 300350China State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuan 750021NingxiaChina

Active non-noble metal catalysts plays a decisive role for water electrolysis,however,the rational design and development of cost-efficient electrocatalysts with Pt/IrO2-like activity is still a challenging ***,a facile one-step electrodeposition route in deep eutectic solvents(DESs) is developed for morphology-controllable synthesis of cobalt oxide/phosphate-carbon nano hybrids on nickel foam(CoPO@C/NF).A series of CoPO@C/NF nanostructures including cubes,octahedrons,microspheres and nanoflowers are synthesized,which show promising electrocatalytic properties toward oxygen and hydrogen evolution reactions(OER/HER).Such surface self-organized microstructure with accessible active sites make a significant contribution to the enhanced electrochemical activity,and hybridizing cobalt oxide with cobalt pyrophosphates and carbon can result in enhanced OER performance through synergistic *** all nanostructures,the obtained microspherical CoPO@C/NF-3 catalyst exhibits excellent catalytic activities for OER and HER in 1.0 M KOH,affording an anodic current density of 10 mA cm^(-2) at overpotentials of 293 mV for OER and 93 mV for HER,with good long-time *** work offers a practical route for engineering the high-performance electrocatalysts towards efficient energy conversion and storage devices.

关键词： Cobalt-based electrocatalysts Oxygen evolution reaction Hydrogen evolution reaction Deep eutectic solvents Electrodeposition

Integrated separation-electrochemical detection device based on wood column for online identification of enantiomer

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Nano Research 2024年第3期17卷 1893-1901页

作者： Junli Guo Yuanfei Xue Chenxi zhao Junjian zhao Zhida Gao Ye mei yan-yan Song College of Sciences Northeastern UniversityShenyang 110004China State Key Laboratory of Precision Spectroscopy School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200062China NYU-ECNU Center for Computational Chemistry at NYU Shanghai Shanghai 200062China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Chiral chemicals have attracted significant interest in the pharmaceutical industry,yet the separation methods to get pure enantiomers from racemic mixture are still *** date,the separation of enantiomers still mainly depends on chromatography using high-cost chiral stationary ***,wood channels were used as the handheld integrated device,and enantiomer separation was simultaneously detected using an electrochemical *** this method,a chiral UIO-66(L-UIO-66)modified enantiomer separation zone and carbonized wood based online detection zone are integrated along a single wood *** on the in situ separation results from the chronoamperometry data,the wood device shows excellent separation ability for a wide range of electrochemically active enantiomers,including 3,4-dihydroxyphenylalanine,amino acids,ascorbic acid,carnitine,and penicillamine with high chirality *** unbiased molecular dynamic simulations indicate that the excellent chiral recognition and separation are attributed to the different barriers from the bound states to the dissociated state of the enantiomers in the homochiral microenvironment of the *** integrated enantiomer separation-electrochemical detection device provides a novel,easy,and low-cost platform for the separation of pure enantiomer from racemic mixture.

关键词： wood column integrated separation-detection device enantioselectivity online sensing free energy barrier

Function of c-Fos-like and c-Jun-like Proteins on Trichostatin A-induced G2/M Arrest in Physarum polycephalum

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Acta Biochimica et Biophysica Sinica 2005年第11期37卷 767-772页

作者： Xiao-Xue LI Jun LU yan-mei zhao Bai-Qu HUANG Institute of Genetics and Cytology,Northeast Normal University,Changchun 130024,China Institute of Genetics and Cytology Northeast Normal UniversityChangchun 130024 China

The homologs of transcription factors c-Fos and c-Jun have been detected in slime moldPhysarum polycephalum during progression of the synchronous cell *** we demonstrated that c-Fos-like and c-Jun-like proteins participated in G2/M transition by the regulation of the level of Cyclin B1protein in *** study of antibody neutralization revealed that interruption of the functions ofc-Fos-like and c-Jun-like proteins resulted in G2/M transition arrest,implicating their functional roles in cellcycle *** G2/M transition was blocked by histone deacetylase inhibitor trichostatin A,changes inc-Fos- and c-Jun-like protein levels,and hyperacetylation of c-Jun-like protein,were *** datasuggest that in ***,c-Fos- and c-Jun-like proteins may be the key factors in the regulation ofhistone acetylation-related G2/M transition,involving the coordinated expression and hyperacetylation ofthese proteins.

关键词： c-Fos-like protein c-Jun-like protein trichostatin A G2/M transition Physarum polycephalum

Effects of iron oxide on crystallization behavior and spatial distribution of spinel in stainless steel slag

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International Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 292-300页

作者： Zihang yan Qing zhao Chengzhi Han Xiaohui mei Chengjun Liu Maofa Jiang Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

Chromium plays a vital role in stainless steel due to its ability to improve the corrosion resistance of the ***,the re-lease of chromium from stainless steel slag(SSS)during SSS stockpiling causes detrimental environmental *** prevent chromium pollution,the effects of iron oxide on crystallization behavior and spatial distribution of spinel were investigated in this *** results revealed that FeO was more conducive to the growth of spinels compared with Fe2O3 and *** were found to be mainly distrib-uted at the top and bottom of *** amount of spinel phase at the bottom decreased with the increasing FeO content,while that at the top *** average particle size of spinel in the slag with 18wt%FeO content was 12.8μ***,no notable structural changes were observed with a further increase in FeO *** other words,the spatial distribution of spinel changed when the content of iron oxide varied in the range of 8wt%to 18wt%.Finally,less spinel was found at the bottom of slag with a FeO content of 23wt%.

关键词： stainless steel slag spinel chromium waste remediation ferrous oxide

Migration mechanism of atrazine in the simulated lake icing process at different freezing temperatures based on density function theory

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Journal of Environmental Sciences 2024年第10期144卷 45-54页

作者： yan Zhang Hao Lin Aixin Yu Xiaozhuang Wang Yucan Liu Tongshuai Liu Chen zhao Rui mei School of Civil Engineering Yantai UniversityYantai 264005China

Atrazine causes concern due to its resistant to biodegradation and could be accumulated in aquatic organisms,causing pollution in *** study measured the concentration of atrazine in ice and the water under ice through a simulated icing experiment and calculated the distribution coefficient K to characterize its migration ability in the freezing ***,density functional theory(DFT)calculations were employed to expatiate the migration law of atrazine during icing *** to the results,it could release more energy into the environment when atrazine staying in water phase(-15.077 kcal/mol)than staying in ice phase(-14.388 kcal/mol),therefore it was beneficial for the migration of atrazine from ice to *** explains that during the freezing process,the concentration of atrazine in the ice was lower than that in the *** calculations indicated thatwhen the temperature decreases from268 to 248 K,the internal energy contribution of the compound of atrazine and ice molecule(water cluster)decreases at the same vibrational frequency,resulting in an increase in the free energy difference of the compound from-167.946 to-165.390 kcal/*** demonstrated the diminished migratory capacity of *** study revealed the environmental behavior of atrazine during lake freezing,which was beneficial for the management of atrazine and other pollutants during freezing and environmental protection.

关键词： Density functional theory(DFT) Icing process Atrazine Migration behavior Free energy

Reductive Deoxygenation of Carbonyl to Methylene by LiAlH4/InBr3

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Chinese Chemical Letters 2003年第10期14卷 1018-1020页

作者： Nan yan FU, Xue mei zhao, Yao Feng YUAN, Ji Tao WANGDepartment of Chemistry, National Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071 Department of Chemistry Natl. Key Lab. Elemento-Organ. Chem. Nankai University Tianjin 300071 China

The reductive deoxygenation of aldehydes and ketones into the corresponding alkanes is accomplished by LiAlH4, in the presence of Lewis acid InBr3. It provides a convenient method to complete the transformation from c... 详细信息

关键词： Indium (III) tribromide lithium aluminium hydride reductive deoxygenation.

Global-local combined features to detect pain intensity from facial expression images with attention mechanism

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Journal of Electronic Science and Technology 2024年第3期22卷 80-93页

作者： Jiang Wu Yi Shi Shun yan Hong-mei yan yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou313001China MOE Key Laboratory for Neuroinformation School of Life Science and TechnologyUniversity of Electronic Science and Technology of ChinaChengdu611731China College of Engineering University of California at Santa BarbaraSanta Barbara93106USA

The estimation of pain intensity is critical for medical diagnosis and treatment of *** the development of image monitoring technology and artificial intelligence,automatic pain assessment based on facial expression and behavioral analysis shows a potential value in clinical *** paper reports a framework of convolutional neural network with global and local attention mechanism(GLA-CNN)for the effective detection of pain intensity at four-level thresholds using facial expression ***-CNN includes two modules,namely global attention network(GANet)and local attention network(LANet).LANet is responsible for extracting representative local patch features of faces,while GANet extracts whole facial features to compensate for the ignored correlative features between *** the end,the global correlational and local subtle features are fused for the final estimation of pain *** under the UNBC-McMaster Shoulder Pain database demonstrate that GLA-CNN outperforms other state-of-the-art ***,a visualization analysis is conducted to present the feature map of GLA-CNN,intuitively showing that it can extract not only local pain features but also global correlative facial *** study demonstrates that pain assessment based on facial expression is a non-invasive and feasible method,and can be employed as an auxiliary pain assessment tool in clinical practice.

关键词： Attention Convolutional neural network Facial expression Pain intensity