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Synthesis and characteriza-tion of two new types of oxovanadium complexes with pyrazole as ligand

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Chinese Science Bulletin 2006年第18期51卷 2189-2196页

作者： XING Yongheng zhang Yuanhong XU Yongting zhang baoli NIU Shuyun BAI Fengying Bioinorganic Laboratory Liaoning Normal University Dalian 116029 China Experiment Center Liaoning Normal University Dalian 116029 China Department of Life Science Liaoning Normal University Dalian 116029 China

At room temperature, two new different oxovanadium complexes with simple pyrazole (C3H4N2) as ligand were synthesized. VO(pz)4(SO4)? H2O (1) (pz: pyrazole) is a mono-nuclear oxovana- dium complex with pyrazole as terminal ligands. V2O2(μ-pz)(μ-OOSO2)(μ-OCH3)(pz)4 (2) is bi-nuclear oxovanadium complex containing three different bridges, which are pyrazolate, sulphate and methoxy, respectively. The two complexes were characterized by IR, elemental analyses, thermal analyses and X-ray diffraction. The crystal structural data of the complexes 1 and 2 are given as follows: Complex 1, orthorhombic, Pna21, a = 14.547(2) ?, b =10.895(2) ?, c =11.835(2) ?; α=β=γ=90°, V=1875.8(5) ?3, Z = 4, R1 = 0.0485, WR2 = 0.1092. Complex 2, triclinic, P1 , a =8.377(2) ?, b =9.928(2) ?, c = 16.527(3) ?, α = 85.54(3)°, β = 80.92(3)°, γ = 87.92(3)°, R1 = 0.1461, WR2 = 0.4444. The study of non-thermal kinetic de- composition shows that, for complex 1, the possible reaction mechanisms of the two steps are nucleation and growth n=1/3, and three-dimensional pervasion n=2, respectively, and the kinetic equations may be expressed as dα/dT = (A/β)exp(?E/RT){1/3(1?α) [?In(1?α)]?2} and dα/dT = (A/β)exp(?E/RT){3/2(1?α)2/3 [1?(1?α)1/3] ?1}, respectively; for complex 2, the pos- sible reaction mechanisms of the two steps are chemical reaction, and three-dimensional pervasion n=2, respectively; the kinetic equations may be ex- pressed as dα/dT = (A/β)exp(?E/RT)[(1?α)2], anddα/dT = (A/β)exp(?E/RT){3/2(1?α)2/3[1?(1?α)1/3] ?1}, respectively.

关键词：吡唑晶体结构非等温动力学分解 C3H4N2 合成配位子

Designed imidazole-based supramolecular catalysts for accelerating oxidation/hydrolysis cascade reactions

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Nano Research 2024年第6期17卷 4916-4923页

作者： Yuanxi Liu Wenjie Xu Shichao Xu Haifeng Wu baoli zhang Li Song Zhen-Gang Wang State Key Laboratory of Organic-Inorganic Composites Key Lab of Biomedical Materials of Natural Macromolecules(Ministry of Education)Beijing Laboratory of Biomedical MaterialsCollege of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China National Synchrotron Radiation Laboratory CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230029China

Reconstructing enzymatic active sites presents a significant challenge due to the intricacies involved in achieving enzyme-like scaffold folding and spatial arrangement of essential functional *** is also a growing interest in building biocatalytic networks,wherein multiple enzymatic active sites are localized within a single artificial system,allowing for cascaded *** this work,we report the self-assembly of imidazole or its derivatives with fluorenylmethyloxycarbonyl-modified histidine and Cu2+to fabricate a supramolecular catalyst,which possesses catechol oxidase-like dicopper center with multiple imidazole as the coordination *** electron microscopy,low-temperature X-band continuous-wave electron paramagnetic resonance,K-edge X-ray absorption spectra/the extended X-ray absorption fine structure analysis,and density functional theory modeling were used for the structural characterization of the *** phenol derivatives and the dissolved oxygen were used as the substrates,with the addition of 4-aminoantipyrine to generate a red adduct with a maximum absorbance at 510 nm,for obtaining time-dependent absorbance change curves and estimating the *** results reveal that the addition of imidazole synergistically accelerates the oxidative activity about 10-fold and the hydrolysis activity about 14-fold than fluorenylmethyloxycarbonyl modified-histidine/Cu2+.The supramolecular nanoassembly also exhibits the ability to catalyze oxidation/hydrolysis cascade reactions,converting 2′,7′-dichlorofluorescin diacetate into 2′,7′-*** process can be regulated through the methylation of the imidazole component at various *** work may contribute to the design of advanced biomimetic catalysts,and shed light on early structural models of the active sites of the primitive copper-dependent enzymes.

关键词： enzyme mimic self-assembly supramolecular catalyst cascade reactions

Semi-Supervised Noisy Label Learning for Chinese Clinical Named Entity Recognition

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Data Intelligence 2021年第3期3卷 389-401页

作者： Zhucong Li Zhen Gan baoli zhang Yubo Chen Jing Wan Kang Liu Jun Zhao Shengping Liu National Laboratory of Pattern Recognition Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China Beijing University of Chemical Technology Beijing 100029China UNISOUND AI Technology Co. Ltd.Beijing 100096China

This paper describes our approach for the Chinese clinical named entity recognition(CNER) task organized by the 2020 China Conference on Knowledge Graph and Semantic Computing(CCKS) competition. In this task, we need to identify the entity boundary and category labels of six entities from Chinese electronic medical record(EMR). We constructed a hybrid system composed of a semi-supervised noisy label learning model based on adversarial training and a rule post-processing module. The core idea of the hybrid system is to reduce the impact of data noise by optimizing the model results. Besides, we used post-processing rules to correct three cases of redundant labeling, missing labeling, and wrong labeling in the model prediction results. Our method proposed in this paper achieved strict criteria of 0.9156 and relax criteria of 0.9660 on the final test set, ranking first.

关键词： Named entity recognition Electronic medical record Noisy label learning Semi-supervised Adversarial training

Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1-75Te

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Journal of Materiomics 2021年第1期7卷 146-155页

作者： Chen Zhu Jian zhang Hongwei Ming Lulu Huang Yuanyue Li Tao Chen Di Li baoli zhang Jingtao Xu Xiaoying Qin Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei230031China University of Science and Technology of China Hefei230026China College of Microtechnology&Nanotechnology Qingdao UniversityQingdao266071China Anhui University Hefei230601China Ningbo Ruiling Advanced Energy Materials Institute Co. LtdNingbo315500China

Based on the calculated results of band structures and density of states,Bi doping is used to adjust its carrier concentration in order to obtain n-type PbTe materials with high power ***,coherent nanophase Cu1.75Te is in situ formed in the n-type PbTe matrix,which can simultaneously optimize the thermal and electrical *** a result,at a relative lower temperature than other reports,the highest ZT value of 1.4 is obtained at 623 K for the nominal Pb0995Bi0005Te+0.86 wt%Cu175Te *** importantly,the ZT hold a higher value in the broad temperature;especially,ZT value is about 1.2-1.4 in the temperature range of 573-773 K,which is beneficial to the significant average ZT value ZTave~0.9 in the temperature range of 300-773 *** results indicate that it is an effective and feasible method to enhance the thermoelectric properties via synergistic modulation of electrical and thermal transport properties by element doping and in situ coherent nanophase.

关键词： Thermoelectric n-type PbTe Electrical transport Thermal transport Nanophase

Complete Genome Sequence of <i>Bacillus thuringiensis</i>Serovar <i>coreanensis</i>ST7 with Toxicity to Human Cancer Cells

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Advances in Microbiology 2020年第12期10卷 673-680页

作者： Jing zhang Yiping Liu Rui Liu Xu Liu baoli zhang Jun Zhu Rice Research Institute of Sichuan Agricultural University Chengdu China Technical Center of Chengdu Customs Chengdu China State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Chengdu China

Bacillus thuringiensis (Bt) parasporal crystal proteins were well known to be toxic to certain insects and cytocidal activity against various human cancer cells. Bt serovar coreanensis ST7, non-pathogenic to insects and non-hemolytic, has an important parasporin, PS4Aa1 (Cry45Aa1), with potential toxicity to human cancer cells. In this study, we reported the feature of complete genome sequence and the cluster of orthologous groups of proteins function classification of ST7. Meanwhile, the evolutionary of ST7 was also studied. The genome data of ST7 will strongly contribute to a better understanding of the genomic diversity and evolution, and enrich the Bt genome database.

关键词： Bacillus thuringiensis Serovar Coreanensis ST7 Gapless Chromosome Plasmid Sequences Genomic Feature Cluster of Orthologous Groups of Proteins

Vitamin-K2 dependent GGCX and MGP are required for homeostatic calci um regulation in epididymis

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解剖学杂志 2021年第S1期44卷 173-174页

作者： Ma He zhang baoli Gao Dayuan Wimmie Shum Li Zhen Department of Anatomy Histology and EmbryologyFourth Military Medical UniversityXi'an710032China School of Life Science and Technology Shanghai Tech University

A low-calcium microenvironment is essential for spermatozoa to mature in the *** elevation of calcium concentration in the epididymal lumen will lead to premature sperm activation,decreased sperm motility,and even male fertility defects or ***,the mechanism of the epididymal homeostastic calcium regulation has not been fully elucidated.

关键词： motility fertility Vitamin

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首调听觉的分析与训练

人民音乐 2007年第9期 46-47页

作者：张宝莉青岛大学音乐学院

音乐是听觉的艺术，任何一种音乐心理活动都离不开听觉的参与。首调作为一种得到广泛应用的音乐听觉类型，怎样从认知的角度理解它的形成，如何在听觉训练中合理应用这一听觉模式，是学习者应学习和掌握的一项有所助益的内容。

关键词：音乐听觉听觉训练合理应用心理活动学习者艺术

Vitamin-K2 dependent GGCX and MGP are required for homeostatic calcium regulation in epididymis

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Vitamin-K2 dependent GGCX and MGP are required for homeostat...

中国解剖学会2021年年会

作者： Ma He zhang baoli Gao Dayuan Winnie Shum Li Zhen Department of Anatomy Histology and EmbryologyFourth Military Medical University School of Life Science and Technology Shanghai Tech University

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建筑乳胶涂料基本原材料选择

涂料工业 2000年第7期30卷 40-42页

作者：张保利常州涂料化工研究院

介绍了建筑乳胶涂料用乳液，颜填料，助剂等原材料的主要种类及选用原则。

关键词：建筑乳胶涂料原材料选用原则涂料