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Journal of Computer Science & Technology 2021年第1期36卷 221-230页

作者： zhi-hao liu Han-Wu Chen School of Computer Science and Engineering Southeast UniversityNanjing 211189China Key Laboratory of Computer Network and Information Integration(Southeast University) Ministry of Education Nanjing 211189China

A universal and general quantum simultaneous secret distribution(QSSD)protocol is put forward based on the properties of the one-dimensional high-level cluster states,in which one sender dispatches different high-level classical secret messages to many users at the same *** to the idea of quantum dense coding,the sender can send different two-dit classical messages(two d-level classical numbers)to different receivers simultaneously by using a one-dimensional d-level cluster state,which means that the information capacity is up to the *** estimate the security of quantum channels,a new eavesdropping check strategy is put ***,a new attack model,the general individual attack is proposed and *** is shown that the new eavesdropping check strategy can effectively prevent the traditional attacks including the general individual *** addition,multiparty quantum secret report(MQSR,the same as quantum simultaneous secret submission(QSSS))in which different users submit their different messages to one user simultaneously can be gotten if the QSSD protocol is changed a little.

关键词： quantum simultaneous secret distribution(QSSD) multiparty quantum secret report(MQSR) quantum simultaneous secret submission(QSSS) quantum secret sharing quantum broadcast communication

An efficient way to coupling amine with derivatives of steric N-Boc-pyrrolidine-2-carboxylic acid

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Chinese Chemical Letters 2007年第4期18卷 393-396页

作者： Feng zhi liu hao Fang Wen Fang Xu School of Pharmacy Shandong University Jinan 250012 China

An efficient way to coupling amine with the derivatives of steric N-Boc-pyrrolidine-2-carboxylic acid was reported in this paper. We have found that the synthesis of derivatives is problematic with the commonly used DCC/HOBT method. As a substitute, the mixed anhydride method was adopted. A series of 6-（3-nitroguanidino）hexanamidopyrrolidine derivatives were prepared with this method.

关键词： Synthesis 6-(3-Nitroguanidino)hexanamidopyrrolidine derivatives The mixed anhydride method

Search algorithm on strongly regular graphs based on scattering quantum walks

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Chinese Physics B 2017年第1期26卷 108-114页

作者： Xi-Ling Xue zhi-hao liu Han-Wu Chen School of Computer Science and Engineering Southeast University Nanjing 210096 China

Janmark, Meyer, and Wong showed that continuous-time quantum walk search on known families of strongly regular graphs（SRGs） with parameters（N, k, λ, μ） achieves full quantum speedup. The problem is reconsidered in terms of scattering quantum walk, a type of discrete-time quantum walks. Here, the search space is confined to a low-dimensional subspace corresponding to the collapsed graph of SRGs. To quantify the algorithm＇s performance, we leverage the fundamental pairing theorem, a general theory developed by Cottrell for quantum search of structural anomalies in star *** search algorithm on the SRGs with k scales as N satisfies the theorem, and results can be immediately obtained, while search on the SRGs with k scales as√N does not satisfy the theorem, and matrix perturbation theory is used to provide an analysis. Both these cases can be solved in O（√N） time steps with a success probability close to 1. The analytical conclusions are verified by simulation results on two SRGs. These examples show that the formalism on star graphs can be applied more generally.

关键词： scattering quantum walk quantum search strongly regular graph

Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

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Frontiers of Chemical Science and Engineering 2022年第11期16卷 1672-1680页

作者： Hai-Long Liao Lan Jiang Hai-Xin Yu zhi-hao liu Ji-Wen Fu Guang-Wen Chu Yong Luo State Key Laboratory of Organic–Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China

Droplet impacting on the stainless steel wire mesh is very common in chemical devices,like a rotating packed *** wettability of wire mesh significantly affects the liquid flow pattern and liquid dispersion ***,the effect of surface wettability on the impaction phenomena at microscale such as liquid film is still *** this work,the dynamic behavior of liquid film on the surface of wire mesh was analyzed by computational fluid dynamics *** dynamic behavior of liquid film on the surface of wire mesh can be divided into the following three steps:(1)spreading step;(2)shrinkage process;(3)stabilizing or disappearing *** of surface wettability,as well as operating conditions,on wetting area and liquid film thickness were *** to the hydrophilic wire mesh,the final wetting area of hydrophobic wire mesh is zero in most *** average liquid film thickness on the surface of hydrophilic wire mesh is 30.02–77.29μm,and that of hydrophobic wire mesh is 41.76–237.37μ*** work provided a basic understanding of liquid film flow at microscale on the surface with various surface wettabilities,which can be guiding the packing optimization and design.

关键词： stainless steel wire mesh computational fluid dynamics surface wettability liquid film impacting

Remediation of Ni^(2+)-contaminated water using iron powder and steel manufacturing byproducts

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Journal of Environmental Sciences 2006年第3期18卷 464-467页

作者： JIN Jian Zhao Wei-rong XU Xin-hua hao zhi-wei liu Yong HE Ping ZHOU Mi Department of Environment Engineering Zhejiang University Hangzhou 310027 China

Steel manufacturing byproducts and commercial iron powders were tested in the treatment of Ni^2＋-contaminated water. Ni^2＋ is a priority pollutant of some soils and groundwater. The use of zero-valent iron, which can reduce Ni^2＋ to its neural form appears to be an alternative approach for the remediation of Ni^2＋-contaminated sites. Our experimental data show that the removal efficiencies of Ni^2＋ were 95.15% and 94.68% at a metal to solution ratio of 20 g/L for commercial iron powders and the steel manufacturing byproducts in 60 min at room temperature, respectively. The removal efficiency reached 98.20% when the metal to solution ratio was 40 g/L for commercial iron powders. Furthermore, we found that the removal efficiency was also largely affected by other factors such as the pHs of the treated water, the length of time for the metal to be in contact with the Ni^2＋-contaminated water, initial concentrations of metal solutions, particle sizes and the amount of iron powders. Surprisingly, the reaction temperature appeared to have little effect on the removal efficiency. Our study opens the way to further optimize the reaction conditions of in situ remediation of Ni^2＋ or other heavy metals on contaminated sites.

关键词： zero-valent iron reduction remediation Ni^2+

Learnware:small models do big

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Science China(Information Sciences) 2024年第1期67卷 39-50页

作者： zhi-Hua ZHOU zhi-hao TAN National Key Laboratory for Novel Software Technology Nanjing University

There are complaints about current machine learning techniques such as the requirement of a huge amount of training data and proficient training skills,the difficulty of continual learning,the risk of catastrophic forgetting,and the leaking of data privacy/*** research efforts have been focusing on one of those concerned issues separately,paying less attention to the fact that most issues are entangled in *** prevailing big model paradigm,which has achieved impressive results in natural language processing and computer vision applications,has not yet addressed those issues,whereas becoming a serious source of carbon *** article offers an overview of the learnware paradigm,which attempts to enable users not to need to build machine learning models from scratch,with the hope of reusing small models to do things even beyond their original purposes,where the key ingredient is the specification which enables a trained model to be adequately identified to reuse according to the requirement of future users who know nothing about the model in advance.

关键词： artificial intelligence machine learning learnware

P-symmetric Subharmonic Solutions for Nonlinear Hamiltonian Systems

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Acta Mathematica Sinica,English Series 2024年第6期40卷 1388-1408页

作者： Duan zhi ZHANG zhi hao Zhao School of Mathematical Sciences Nankai UniversityTianjin 300071P.R.China

In this paper,we prove that for each positive k≡1 mod m there exists a P-symmetric kmτ-periodic solution xk for asymptotically linear mτ-periodic Hamiltonian systems,which are nonautonomous and endowed with a *** the P-symmetric Hamiltonian function is semi-positive,one can prove,under a new iteration inequality of the Maslov-type P-index,that xk_(1) and xk_(2) are geometrically distinct for k_(1)/k_(2)≥(2n+1)m+1;and xk_(1),xk_(2) are geometrically distinct for k_(1)/k_(2)≥m+1 provided xk_(1) is non-degenerate.

关键词： P-symmetric subharmonic Hamiltonian systems Maslov-type index theory iteration inequality asymptotically linear

Sigmatropic rearrangements of B(MIDA)-propargylic alcohols towards the diverse synthesis of α-functionalized organoborons

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Science China Chemistry 2024年第2期67卷 568-575页

作者： Jiasheng Qian Li-Cai liu zhi-hao Chen Yuan liu Yin Li Qingjiang Li Honggen Wang Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical SciencesSun Yat-Sen UniversityGuangzhou510006China

α-Functionalized organoborons are useful building blocks and key structural elements in functional *** previous synthesis relied on the famous Matteson reaction or the late-stage borylative modification of alkynes or ***,the synthetic transformation of borylated building blocks offers another useful strategy and is currently actively *** report herein that B(MIDA)-propargylic alcohols(BPAs) are a useful type of borylated building *** two complementary functional group handles(alkyne and hydroxyl) in close proximity,the redox-neutral [3,3] and [2,3] sigmatropic rearrangements of BPAs allow the efficient synthesis of several types of α-functionalized boronates,including α,β-unsaturated acylborons,α-S/P-substituted allenylborons,boryl-substituted thiazoles and a borylated α,β-unsaturated hydrazine,some of which are otherwise challenging targets using other synthetic methods.

关键词： organoboron diverse synthesis sigmatropic rearrangement heteroarene amide

Pseudo-Wellens syndrome secondary to postexercise syncope

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World Journal of Emergency Medicine 2022年第4期13卷 334-336页

作者： Shu Fang zhi-hao liu Qi Jin Yu-xi Li Wen-hui Ding hao-yu Weng Tie-ci Yi Jian-ping Li Department of Cardiology Peking University First HospitalBeijing 100034China Department of Cardiology Xiamen Cardiovascular HospitalXiamen UniversityXiamen 361004China Department of Cardiology Shanghai Institute of Cardiovascular DiseasesZhongshan HospitalFudan UniversityShanghai 200032China Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education Health Science CenterPeking UniversityBeijing 100034China

Dear editor,Wellens syndrome is characterized by electrocardiography(ECG)patterns of the biphasic or inverted T wave in the precordial leads with normal R wave progression and absence of Q waves,[1,2]which indicates occlusive lesions of the proximal left anterior descending(LAD)coronary artery and warrants.[1]These ECG changes usually occur during a pain-free interval and turn to a fatal consequence if without urgent intervention therapy.[1,3]However,in some cases,coronary stenosis was absent and ECG patterns manifested as Wellens syndrome,which was defined as pseudo-Wellens syndrome.

关键词： coronary editor consequence

Endogenous Candida albicans endophthalmitis in a patient with chronic renal failure on hemodialysis

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International Journal of Ophthalmology(English edition) 2024年第5期17卷 979-981页

作者： Meng-Ya liu zhi-Fan Chen hao-Sheng liu Qian-Li Meng Department of Ophthalmology Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou 510080Guangdong ProvinceChina The Fourth Affiliated Hospital of Guangzhou Medical University Guangzhou 511400Guangdong ProvinceChina

Dear Editor,We report a rare case of endogenous endophthalmitis caused by Candida albicans in a patient with chronic renal failure concomitant hemodialysis.A 71-year-old man with a history of hypertension and 2-year chronic renal failure on hemodialysis via a native arteriovenous fistula(AVF)was presented to the local hospital due to fever 3wk *** pathogens were detected through blood culture on admission,and his fever gradually subsided with intravenous ceftriaxone *** a week of fever,he experienced progressive blurred vision in both eyes,accompanied by pain and *** magnetic resonance imaging(MRI)of the brain revealed *** had not undergone any previous eye surgeries or trauma.

关键词： hemodialysis albicans fever