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Structural Design and Application of Azo-based Supramolecular Polymer Systems

Chinese Journal of Polymer Science 2019年第12期37卷 1183-1199,I0004页

作者： Hui-tao yua Jun-Wen Tang Yi-Yu Feng Wei Feng School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Advanced Ceramics and Machining Technology Ministry of EducationTianjin 300072China Tianjin Key Laboratory of Composite and Functional Materials Tianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China

This article presents a brief overview of recent advances in azo-containing supramolecular *** literature,it has been shown that azo supramolecular polymers and their composite materials exhibit fast and intelligent responses to various external stimuli,such as temperature,pH change,redox reagents,ligands,coupling reagents,*** applications,these systems are widely used for molecular motors,shape memory,liquid crystal,solar thermal energy storage,signal transmission,intelligent encryption,and other ***,these systems can function as key components for device upgrade ***,the design and rules of azo supramolecular polymers are still not supported by an exact *** about the relationship between the spatial structure and behavior is lacking,and new supramolecular materials cannot be designed by adding functional moieties to known azo *** on the current research status,this review mainly summarizes the structural design principles as well as structures and applications of known azo supramolecules;meanwhile,it highlights the emerging development fields,recent advances,and prospects in fabricating sei住assembling intelligent supramolecular systems with azo supramolecular polymers as responsive *** goal of this review is to bring new inspiration to researchers who want to optimize the chemical structure,steric conformation,electrostatic environment,and specific molecular functionalization.

关键词： Azo Supramolecular Structures Application Prospect

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Novel reusable sulfate-type zirconium alginate ion-exchanger for fluoride removal

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Chinese Chemical Letters 2021年第11期32卷 3410-3415页

作者： tao yua Yiliang Chen Yizhong Zhang Xin Tan tao Xie Boyu Shao Xiang Huang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China School of Environmental Science and Engineering Tianjin UniversityTianjin 300350China School of Science Tibet UniversityLhasa 850000China

It is still a challenge to eliminate efficiently fluoride ion from groundwater,especially to design and synthesis an adsorbent possessing high adsorption capacity,recyclability and wide pH application *** we present millimeter-sized sulfate-type zirconium alginate hydrogel beads with 3D network structure(AHB@Zr-SO^(2−)_(4))that exhibited a maximum adsorption capacity of 101.3 mg/g with wide pH applicability(pH 3−9).This material have~2.5 times higher adsorption capacity than that of pure zirconium alginate hydrogel beads(AHB@Zr)and it was ascribed to ion exchange between SO^(2−)_(4)and F−on the surface of AHB@Zr-SO^(2−)_(4),which was verified via ion chromatography measurement coupled with X-ray photoelectron spectroscopy(XPS)and Fourier Transform Infrared Spectrometer(FTIR Spectrometer)*** functional theory(DFT)calculations indicated that the ion exchange process between SO^(2−)_(4)and F−in AHB@Zr-SO^(2−)_(4)was energetically favorable than OH^(−)and F^(−)in AHB@*** addition,310 bed volumes(BV)of effluent was realized via column adsorption of groundwater containing fluoride on AHB@Zr-SO^(2−)_(4)and indicated that it is a promising candidate for mitigating the problem of fluoride-containing groundwater.

关键词： Fluoride ion Zirconium alginate Sulfate Adsorption capacity Ion exchange

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The first-principles study on the doping effect of Re in Ni3Al

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Progress in Natural Science:Materials International 2008年第7期18卷 861-866页

作者： Song Yu a,*, Chongyu Wanga,b, tao yua aCentral Iron and Steel Research Institute, Beijing 100081, China bDepartment of Physics, Tsinghua University, Beijing 100084, China Central Iron and Steel Research Institute Beijing 100081 China Department of Physics Tsinghua University Beijing 100084 China

Using first-principles density function for molecules method (DMol) and discrete variational method (DVM) based on the density functional theory, we studied the doping effect of Re in Ni3Al. The structure relaxation and the alloying energy show that Re has a strong Al site preference and leads to the local deformation, which is in agreement with the experimental results and other theoretical results. In addition, the charge density diffierence and the bond order show that Re can strongly enhance the interatomic interaction between the nearest neighbor atoms. From the density of states and the Pauli spectrum, we find that resonance states and localized states are induced by doping Re, and the doped Re atom forms the hybridized bond with the nearest neighbor atoms.

关键词： The first-principles Re Ni3Al

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The Treatment of Mid-shaft Clavicle Fractures

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Chinese Medical Journal 2015年第21期128卷 2946-2951页

作者： Qing-Hua Sang Zhi-Gang Gou Hua-Yong Zheng Jing-tao yua Jian-Wen Zhao Hong-Ying He Chuang Liu Zhi Liu Department of Orthopedics Beijing Army General Hospital Beijino 100700 China Department of Orthopedics Tianjin Sanatorium Affiliated to Beijing Military Area Command Tianjin 300381 China

Objective： Through reviewing the relevant literature from the past decades, to summarize the assessment and management of fractures of the clavicle, and provide an overview of the clinical results of a range of treatment options. Data Sources： The data analyzed in this review are mainly from articles included in PubMed and EMBASE, published from 1960 to 2015. Study Selection： Studies involving assessment of fractures of the clavicle were reviewed. Further literatures were gathered regarding the conservative and surgical treatment of these fractures, including the methods of fixation and the surgical approaches used. Both conservative and surgical treatments were then compared and contrasted. Results： Through retrieving and reading the abstract, a total of 42 representative articles were selected, which covered all aspects of the conservative treatment and surgical treatment, and compared the advantages and disadvantages of different treatment options. Conclusions： Although the majority of recent data suggest that surgery may be more appropriate as it improves functional outcome and reduces the risk of complications, we recommend that the treatment should be individually assessed.

关键词： Conservation Internal Fixation lntrarnedullary Fixation: Mid-shaft Clavicle Fracture Plate: Surgery

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Electrophysiological features in patients with frontal lobe epilepsy due to focal cortical dysplasia

Electrophysiological features in patients with frontal lobe ...

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第七届CAAE脑电图与神经电生理大会

作者： Cuiping Xu Guojun Zhang tao yua Xiaohu Zhang Kai Ma Xiaoming Yan Duanyu Ni Yuping Wang Yongjie Li Xuanwu Hospital Capital Medical University

＜正＞Purpose To evaluate the scalp electroencephalographic（EEG） and the stereoelectroencephalography（SEEG） features,the clinical characteristics,and the postsurgical outcome in an uniform series of patients who underwent frontal lobe epilepsy（FLE） surgery and had pathologically confirmation of focal cortical dysplasia（FCD） type I or type II.

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基于AMDAR的航路气象模型研究

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航空电子技术 2009年第2期40卷 18-23页

作者：朱衍波郭运韬张军北京航空航天大学电子信息工程学院北京100191

提出了一种基于AMDAR的航路气象模型。该模型通过设置虚拟观测点和应用基于卡尔曼滤波的数值气象预报释用技术,融合AMDAR数据和世界区域预报系统(WAFS)发布的格点预报数据,有效提高了航路上气象要素预报的时空分辨率、精度和航路飞行效... 详细信息

提出了一种基于AMDAR的航路气象模型。该模型通过设置虚拟观测点和应用基于卡尔曼滤波的数值气象预报释用技术,融合AMDAR数据和世界区域预报系统(WAFS)发布的格点预报数据,有效提高了航路上气象要素预报的时空分辨率、精度和航路飞行效率。仿真试验表明,航路气象模型的预测性能显著优于目前使用的WAFS预报。

关键词：航空气象服务航路气象模型航空器气象资料下传卡尔曼滤波

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Improvement of tensile behaviours of a γ'-Co3(Al, W) strengthened polycrystalline Co-9Al-4.5W-4.5Mo-2Ta-0.02B alloy at room-and hightemperatures by doping Ce

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Progress in Natural Science:Materials International 2019年第4期29卷 416-424页

作者： Zhuolin tao Fei Zhong Youxing yua Jiangbo Sha School of Materials Science and Engineering Beihang University College of Chemistry and Materials Science Hubei Engineering University

The microstructures and tensile behaviours of cerium（Ce） doped polycrystalline Co-9 Al-4.5 W-4.5 Mo-2 Ta-0.02 B alloys（doped 0.05 and 0.2 at.% Ce） at room temperature（RT） and 600-800℃were ***-suit tensile test under SEM was conducted to understand the deformation and damage mechanisms at *** at 800℃for50 h,the 0.05 Ce alloy consisted of a Co solid-solution matrix(γ-Co;) and nano-scale cuboidal y’-Co;（Al,W）precipitates,while for the 0.2 Ce alloy,κ-Co;（W,Mo） precipitates and γ’-depleted zone were present at the grain boundaries in addition to the y/y’ *** 0.05 Ce alloy exhibited flow stress anomalies at 700℃.With higher∑1～3 boundary fraction and cleaned-up grain boundary,the 0.05 Ce alloy always showed greater strength and elongation than the 0.2 Ce alloy with the grain boundary precipitates at temperatures up to 800℃.Doped 0.05 at.% Ce made the Co-9 Al-4.5 W-4.5 Mo-2 Ta-0.02 B alloy have an excellent elongation of 6.1% at700℃,owing to a mixed transgranular dimple plus intergranular cleavage *** slip bands transferring through the low-angle grain boundary and slipping of the γ’-Co;（Al,W） in the 0.5 Ce alloy resulted in excellent ductility of 20.4% at RT.

关键词： A. Fracture mechanics A. electron microscopy A. X-ray analysis C. Casting methods D. Plasticity

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The clinicopathological and prognostic significance of PD-L1 expression in pancreatic cancer:A meta-analysis

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Hepatobiliary & Pancreatic Diseases International 2018年第2期17卷 95-100页

作者： He-Li Gaoa Liang Liua Zi-Hao Qi Hua-Xiang Xu Wen-Quan Wang Chun-tao Wu Shi-Rong Zhang Jin-Zhi Xu Quan-Xing Ni Xian-Jun yua Department of Pancreatic Surgery Fudan University Shanghai Cancer CenterShanghai 200032China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghai 200032China Shanghai Pancreatic Cancer Institute Shanghai 200032China Pancreatic Cancer Institute Fudan UniversityShanghai 200032China

Background: Immunotherapy has shown promise against solid tumors. However, the clinical significance of programmed cell death 1(PD-1) and programmed cell death ligand 1(PD-L1) in pancreatic ductal adenocarcinoma(PDAC) remains unclear. This meta-analysis aimed to analyze the prognostic effect of PD-L1 in *** sources: Electronic search of the Pub Med, Cochrane Library and Web of Science was performed until December 2016. Through database searches, we identified articles describing the relationship between PD-L1 status and PDAC patient prognosis. Meta-analysis was performed to investigate the relationship between PD-1 and overall survival(OS).Results: Nine studies with 989 PDAC patients were included for PD-L1 expression analysis. And 5 studies with 688 PDAC patients were included in the prognostic analysis. The PD-L1 positive rate measured by immunohistochemistry(IHC) was higher than that measured by polymerase chain reaction(PCR)(P < 0.001). PDAC patients with high expression levels of PD-L1 had significantly reduced OS(HR = 2.34;95% CI: 1.78–3.08). Subgroup analysis showed that the prognostic effect of PD-L1 levels was similar between the IHC and PCR methods. The PD-L1 positive rate was associated with PDAC T stages; the PD-L1 positive rate in the T3–4 group was higher than that in the T1-2 group(OR = 0.37; P = 0.001).Conclusions: High PD-L1 expression levels predicted a poor prognosis in PDAC patients. Thus, PD-L1 status helps determine treatment in PDAC patients.

关键词： Pancreatic ductal adenocarcinoma Programmed cell death ligand 1 Prognosis Meta-analysis

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Vacuum Ultraviolet Photodissociation Dynamics of N_(2)O+hν→N_(2)(X^(1)Σg+)+O(^(1)S0) in the Short Wavelength Tail of D^(1)Σ+Band

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Chinese Journal of Chemical Physics 2022年第6期35卷 860-866,I0072页

作者： Hong Liao Zheng Li Dao-fu yuan Wen-tao Chen Xing-an Wang Sheng-rui yua Xue-ming Yang Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231China Center for Advanced Chemical Physics and Department of Chemical Physics School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China State key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Vacuum ultraviolet photodissociation dynamics of N2O+hν→N2(X^(1)Σg+)+O(^(1)S0)in the short wavelength tail of D^(1)Σ+band has been investigated using the time-sliced velocity-mapped ion imaging technique by probing the images of the O(^(1)S0)photoproducts at a set of photolysis wavelengths including 121.47 nm,122.17 nm,123.25 nm and 123.95 *** product total kinetic energy release distributions,vibrational state distributions of the N2(X^(1)Σg+)photofragments and angular anisotropy parameters have been obtained by analyzing the raw O(^(1)S0)*** is noted that additional vibrationally excited photoproducts(3≤v≤8)with a Boltzmann-like feature start to appear except the non-statistical component as the photolysis wavelength decreases to 123.25 nm,and the corresponding populations become more pronounced with decreasing of the photolysis ***,the vibrational state specific anisotropy parameterβat each photolysis wavelength exhibits a drastic fluctuation nearβ=1.75 at v<8,and decreases to a minimum as the vibrational quantum number further *** the overall anisotropy parameterβfor the N2(X^(1)Σg+)+O(^(1)S0)channel presents a roughly monotonical increase from 1.63 at 121.47 nm to 1.95 at 123.95 *** experimental observations suggest that there is at least one fast nonadiabatic pathway from initially prepared D^(1)Σ+state to the dissociative state with bent geometry dominating to generate the additional vibrational structures at high photoexcitation energies.

关键词： Photodissociation Vacuum ultraviolet Ion imaging Anisotropy parameter Vibrational state distribution

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知识能量流动的系统动力学建模与仿真研究——基于创新生态系统视角

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软科学 2019年第12期33卷 13-22页

作者：李佳钰张贵李涛河北工业大学经济管理学院天津300401 河北工业大学京津冀发展研究中心天津300401 北京大学政府管理学院北京100871

基于生态能量学和知识管理论将知识进行生态学解构,系统论述了知识能量的内涵和表征;提出"知识能量流动"概念,分析了知识能量流动的情境和机理,采用系统动力学模型研究了不同情境下知识能量流动的特征与规律。研究结果表明:知识具有生... 详细信息

基于生态能量学和知识管理论将知识进行生态学解构,系统论述了知识能量的内涵和表征;提出"知识能量流动"概念,分析了知识能量流动的情境和机理,采用系统动力学模型研究了不同情境下知识能量流动的特征与规律。研究结果表明:知识具有生态能量学特征,知识势能、知识动能和知识内能共同决定知识能量结构;技术替代是知识能量流动的必要条件;知识能量结构是影响知识能量流量和流向的关键因素。

关键词：知识能量知识能量流动创新生态系统系统动力学

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