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Science China Chemistry 2018年第5期61卷 545-556页

作者： Rui Li zhong-Liang Gong jian-Hong Tang Meng-jia Sun jiang-Yang Shao Yu-Wu zhong jiannian Yao CAS Key Laboratory of Photochemistry CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

Six triarylamine derivatives 1–6 with branched multi-pyridine substituents were prepared and characterized. These compounds are distinguished by the substituent on one of the phenyl group with NO2 for 1, CN for 2, Cl for 3, p-C6 H4 OMe for 4, OMe for 5,and NMe2 for 6, respectively. As revealed by single crystal X-ray analysis, these substituents play an important role in determining the configuration of the triarylamine framework and the crystal packing of 1–6. The emission properties of these compounds were examined in different solvents(toluene, CH2 Cl2, acetone, tetrahydrofuran(THF), and N,N-dimethylformamide(DMF)) and in solid states. Distinct dual emissions from the localized emissive state and the intramolecular charge transfer state were observed for compound 5 in CH2 Cl2. Compounds 1 and 6 show apparent aggregated enhanced emissions in acetone/H2 *** emission properties of these compounds were further modulated by the addition of tris(pentafluorophenyl)borane. In addition, density functional theory(DFT) and time-dependent DFT(TDDFT) calculations have been performed on the ground and singlet excited states to complement the experimental findings.

关键词： triarylamines luminescence charge-transfer pyridines donor-acceptor

Ultrasound-responsive Homopolymer Nanoparticles

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Chinese Journal of Polymer Science 2020年第4期38卷 349-356,I0006页

作者： Bo Yang jian-zhong Du Department of Orthopedics Shanghai Tenth People's HospitalTongji University School of MedicineShanghai 200072China Department of Polymeric Materials School of Materials Science and EngineeringKey Laboratory of Advanced Civil Engineering Materials of Ministry of EducationTongji UniversityShanghai201804China

Nonin vasive ultraso und is a more effective strategy for on-demand drug delivery of polymeric nano particles than many other ***,the preparation of ultrasound-responsive homopolymer nanoparticles is still very *** this study,we disclose the regulating factors of ultrasound responsiveness of homopolymer nanoparticles and the disaggregation behavior of homopolymer nanoparticle *** nanoparticles such as vesicles and large compound micelles(LCMs)are self-assembled from poly(methoxyethyl methacrylate)(PMEMA)and poly(amic acid)(PAA),*** ultrasound responsiveness of PAA vesicles at metastable state could be regulated by tuning the self-assembly temperature(7^),and was optimized when Ts is around the glass transition temperature(7g)of ***,the PMEMA LCMs did not respond to ultrasound as they are at stable *** the other hand,poly(2-(2-ethoxyethoxy)ethyl acrylate)(PEEA)could self-assemble into vesicle aggregates or complex micelle aggregates,which were dissociated upon ***,the above findings provide us with a fresh in sight for designing ultrasound-responsive polymeric nanoparticles.

关键词： Ultrasound responsiveness Homopolymers Vesicles Micelles Self-assembly

ON THE CONVERGENCE OF WAVEFORM RELAXATION METHODS FOR LINEAR INITIAL VALUE PROBLEMS

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Journal of Computational Mathematics 2004年第5期22卷 681-698页

作者： jian-yuPan zhong-zhiBai LSEC ICMSECAcademyofMathematicsandSystemSciencesChineseAcademyofSciencesBeijing100080China

We study a class of blockwise waveform relaxation methods, and investigate its convergence properties in both asymptotic and monotone senses. In addition, the monotone convergence rates between different pointwise/blockwise waveform relaxation methods resulted from different matrix splittings, and those between the pointwise and blockwise waveform relaxation methods are discussed in depth.

关键词： Blockwise waveform relaxation method Asymptotic and monotone convergence Comparison results

RAFting the rapids of axon regeneration signaling

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Neural Regeneration Research 2015年第3期10卷 341-343页

作者： jian zhong Burke Medical Research Institute Brain and Mind Research InstituteWeill Medical College of Cornell University

The functional regeneration of damaged axons and severed connections in the mature central nervous sys- tem （CNS） remains a challenging goal of neurological research. Mature CNS neurons are refractory to axon regeneration for two major reasons, one, because the ac- tivity of cell-intrinsic mechanisms that drive axon growth during development is low- and often further suppressed after an injury - and two, because certain molecules that are part of mature extracellular matrix and myelin act as strong inhibitors of axon growth. Genetic removal of growth inhibitory molecules can increase axon sprouting, but is not sufficient to enable long-range axon growth. Since axon growth is robust during early developmental stages, it has long been hypothesized that mature injured neurons may be ＂reprogrammed＂ to the earlier growth state by re-activation of the intracellular growth signaling cascades that drive axon elongation in the developing fetus.

关键词： RAFting the rapids of axon regeneration signaling NGF SOCS

Certificateless key-insulated signature without random oracles

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第12期10卷 1790-1800页

作者： zhong-mei WAN Xue-jia LAI jian WENG Sheng-li LIU Yu LONG Xuan HONG Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China College of Science Hohai University Nanjing 210098 China Department of Computer Science Jinan University Guangzhou 510630 China School of lnformation Systems Singapore Management University Singapore 178902 Singapore

Leakage of the private key has become a serious problem of menacing the cryptosystem security. To reduce the underlying danger induced by private key leakage, Dodis et al.(2003) proposed the first key-insulated signature scheme. To handle issues concerning the private key leakage in certificateless signature schemes, we devise the first certificateless key-insulated signature scheme. Our scheme applies the key-insulated mechanism to certificateless cryptography, one with neither certificate nor key escrow. We incorporate Waters (2005)’s signature scheme, Paterson and Schuldt (2006)’s identity-based signature scheme, and Liu et al.(2007)’s certificateless signature scheme to obtain a certificateless key-insulated signature scheme. Our scheme has two desirable properties. First, its security can be proved under the non-pairing-based generalized bilinear Diffie-Hellman (NGBDH) conjecture, without utilizing the random oracle model; second, it solves the key escrow problem in identity-based key-insulated signatures.

关键词： Key-insulated Key leakage Certificateless Bilinear map

Bis-triarylamine with a cyclometalated diosmium bridge:A multi-stage redox-active system

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Chinese Chemical Letters 2015年第6期26卷 649-652页

作者： Meng-jia Sun Hai-Jing Nie jian-Nian Yao Yu-Wu zhong Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of PhotochemistryInstitute of ChemistryChinese Academy of Sciences

A tetra（pyrid-2-yl）-pyrazine-bridged cyclometalated diosmium complex I（PF6）2 with two distal redox- active organic amine suhstituents has been synthesized and characterized. This complex displays four consecutive and separated anodic redox waves at ＋0.24, ＋0.38, ＋0.64, and ＋0.71 V vs. Ag/AgCI. Upon stepwise oxidation, four-step absorption spectral changes in the visible to near-infrared region have been observed. The different redox states of I （1^2＋ through 1^6＋） can be distinguished by the significantly different absorption spectra in the visible and near-infrared region. DFT calculations of 1^3＋ show that the spin is delocalized on both osmium-amine components.

关键词： Mixed-valent compounds Spectroelectrochemistry Near-infrared electrochromism Redox-active compounds Triarylamines

HIGH-RESOLUTION SEMI-DISCRETE CENTRAL SCHEME FOR DAM-BREAK PROBLEMS

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Journal of Hydrodynamics 2005年第5期17卷 585-589页

作者： CHEN jian-zhong SHI zhong-ke College of Automation Northwestern Polytechnical University Xi＇an 710072 China

A numerical model for simulating the dambreak problems was presented. The model was based on a high-resolution semi-discrete central-upwind difference scheme. In order to reduce spurious oscillation, the uniformly non-oscillatory limiter was employed. A third-order total variation diminishing Runge-Kutta method is used for time integration. The main feature of the presented method is its simplicity. It requires no Riemann solvers, no flux splitting and no flux limiter. It is explicit and does not require dimensional splitting for two dimensions. The Simpson quadrature rule was employed to compute the source term. To verify the effectiveness and accuracy of the proposed method, the 1D dambreak, circular dam-break and partial dam-break problems were simulated. The results are shown to be in good agreement with analytical solution and numerical results obtained by other methods.

关键词： dam-break shallow water equations central-upwind difference scheme

Combination therapy with toripalimab and anlotinib in advanced esophageal squamous cell carcinoma:A case report

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World Journal of Clinical Cases 2023年第27期11卷 6579-6586页

作者： Si-Cong Chen Dong-Heng Ma jia-jian zhong Hepatobiliary and Pancreatic Surgery Huazhong University of Science and Technology Union Shenzhen HospitalShenzhen 518052Guangdong ProvinceChina

BACKGROUND Toripalimab and anlotinib have shown good response in esophageal cancer,with high objective response rate and progression free ***,they have been approved as second-line or above-line therapy for advanced or unresectable esophageal *** of these two drugs may have synergistic effects,but evidence of which is *** SUMMARY Here,we report on a 73-year-old male,newly diagnosed with advanced esophageal squamous cell carcinoma(ESCC),who received a combination of toripalimab and *** response was achieved after treatment for 3 mo and remission was maintained up to 14 *** The combination therapy of toripalimab and anlotinib is a promising treatment for unresectable ESCC and related clinical trials are warranted.

关键词： Esophageal squamous cell carcinoma Toripalimab Anlotinib Complete response Case report

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语料库视角下的盲文规范化问题研究

北京联合大学学报 2025年第1期39卷 78-85页

作者：钟经华耿楠阎嘉北京联合大学特殊教育学院北京100075

长期以来,盲文领域主要采用传统方法进行研究,存在效率低、覆盖面窄、主观性强、共享性差等问题。目前,我国已建成国际上首个千万级规模的具备盲文触觉(单方、整体)、对照(汉字—拼音)、语言学(声调、分词连写)三维六层特征的精标注盲... 详细信息

长期以来,盲文领域主要采用传统方法进行研究,存在效率低、覆盖面窄、主观性强、共享性差等问题。目前,我国已建成国际上首个千万级规模的具备盲文触觉(单方、整体)、对照(汉字—拼音)、语言学(声调、分词连写)三维六层特征的精标注盲文语料库,利用这一语料库对盲文进行量化研究,能够促进对我国盲文发展全貌的把握和了解。从标调一致性、分词一致性等方面对盲文进行全面的定量分析,指出现行盲文中存在的问题,为下一步《国家通用盲文方案》的修订和盲文规范化建设提供建议和对策,以提升盲文出版的规范化水平。

关键词：汉语盲文语料库国家通用盲文方案盲文规范化

Global patterns of phosphorus transformation in relation to latitude,temperature and precipitation

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Pedosphere 2021年第1期31卷 214-220页

作者： jia-zhong ZHANG Ocean Chemistry and Ecosystems Division Atlantic Oceanographic and Meteorological LaboratoryNational Oceanic and Atmospheric AdministrationMiami FL 33149USA

Dear Editor,Phosphorus (P) is essential and often a limiting nutrient for biological production on land and in the seas (Elser et al., 2007). The biologically available P to terrestrial and aquatic ecosystems ultimate... 详细信息

关键词： latitude phosphorus transformation