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Chinese Chemical Letters 2015年第3期26卷 348-352页

作者： Cheng-Xi zhang Yu-Yuan Deng yi-yang zhang Po yang yi Gu State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan University

To study the synthesis of 3,4-dihydro-2H-3-phenyl-1,3-benzoxazine（benzoxazine）,the reaction paths of phenol,aniline and formaldehyde were investigated by analyzing the synthesis crude *** the aid of high-performance liquid chromatography（HPLC）,chromatographic column and preparative HPLC,seven compounds originated from the crude products were obtained and their chemical structures were *** reaction paths are proposed based on these *** show that Nhydroxymethyl aniline（HMA） derived from the reaction of formaldehyde and aniline is probably the key intermediate during the *** can react with itself or other reactants to form other intermediates,such as 1,3,5-triphenyl-1,3,5-triazinane and 2-（（phenylamino）methyl）phenol,and further form benzoxazine and byproducts.

关键词： aniline phenol formaldehyde itself crude originated react monomer probably claimed

Manufacturing and characterizing of CCTO/SEBS dielectric elastomer as capacitive strain sensors

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Rare Metals 2023年第7期42卷 2344-2349页

作者： yi-yang zhang Jie zhang Gen-Lin Wang Zhi-Feng Wang Zhi-Wei Luo Ming zhang School of System Informatics Kobe UniversityKobe657-8501Japan School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou225002China Test Center of yangzhou University Yangzhou225009China

Calcium copper titanate(CCTO)/polystyrenepolyethylene-polybutylene-poly styrene(SEBS)dielectric elastomers were prepared via blending method.A capacitive strain sensor using CCTO/SEBS as dielectric layer and polyaniline-dodecylbenzensulfonic acid(PANI-DB S A)/SEBS as electrodes was designed and manufactured by thermoforming process.X-ray diffractometer(XRD),scanning electron microscopy(SEM)and Raman spectra analyses were carried out;no impurities were found in the composite and CCTO particles were well *** dielectric tests showed that the samples filled with 20 wt%CCTO have their permittivity improved by 70%.The capacitive strain sensors have a stabilized capacitance variety range at different strain ranges or stretch speeds,and could remain synchronized after 500-time-stretching,showing high reproducibility.

关键词： Calcium copper titanate Polystyrene-polyethylene-polybutylene-polystyrene Capacitive strain sensor Dielectric constant Strain-capacitance value

Design and properties of calcium copper titanate/poly(dimethyl siloxane) dielectric elastomer composites

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Rare Metals 2021年第9期40卷 2627-2632页

作者： yi-yang zhang yang Min Gen-Lin Wang Zhi-Feng Wang Jun-Liang Liu Zhi-Wei Luo Ming zhang School of System Informatics Kobe UniversityKobe 657-8501Japan School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

The high phase content of inorganic dielectric fillings will give a strong electric driving force and hard matrix. That is a contradiction in enhancing the electrodeformation of dielectric elastomers(DEs). Therefore, in this paper, by focusing on how to approach a balance between these and finding an effective way to tune the electric response of the DEs, the theoretical calculation and experimental investigation based on calcium copper titanate(CCTO)/poly(dimethyl siloxane)(PDMS) were carried out. It is found that CCTO with a smaller particle size shows a larger dielectric parameter. With smaller CCTO particle as the fillings, the fabricated elastomer composite would approach to a low modulus by a proper CCTO phase morphology in the matrix.

关键词： Dielectric elastomer Electro-deformation Phase morphology Modulus control

Sphingosine kinase 1 knockout alleviates hepatic ischemia/reperfusion injury by attenuating inflammation and oxidative stress in mice

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Hepatobiliary & Pancreatic Diseases International 2019年第3期18卷 255-265页

作者： Guang-Hui Qiang Zhong-Xia Wang An-Lai Ji Jun-yi Wu yin Cao Guang zhang yi-yang zhang Chun-Ping Jiang Department of Hepatobiliary Surgery Nanjing Drum Tower Hospital Drum Tower Clinical College of Nanjing Medical University Nanjing 210008 China Department of Hepatobiliary Surgery the Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing 210008 China Department of Gastroenterology Nanjing Drum Tower Hospital Drum Tower Clinical College of Nanjing Medical University Nanjing 210008 China

Background: Hepatic ischemia/reperfusion(I/R) injury remains a significant problem in clinical practice. Sphingosine kinase 1(Sph K1) phosphorylates sphingosine to sphingosine-1-phosphate(S1 P) which participates in multiple bioactive processes. However, little is known about the role of Sph K1 in hepatic I/R injury. This study aimed to investigate the effect of Sph K1 knockout on liver I/R injury and to explore underlying mechanisms. Methods: Sph K1 knockout and wild type mice were subjected to 70% partial hepatic I/R. Serum alanine aminotransferase was determined to indicate the degree of liver damage. Hematoxylin-eosin staining and TUNEL assay were used to assess histological changes and hepatocellular apoptosis, respectively. Immunohistochemistry was performed to detect the expression and translocation of phosphorylated p65 and signal transducer and activator of transcription 3(STAT3). Western blotting was used to determine the expression of S1 P receptor 1(S1 PR1), phosphorylated p65 and STAT3. Real-time PCR was used to demonstrate the changes of proinflammatory cytokines. Oxidative stress markers were also determined through biochemical assays. Results: Sph K1 knockout significantly ameliorated I/R-induced liver damage, mitigated liver tissue necrosis and apoptosis compared with wild type control. I/R associated inflammation was alleviated in Sph K1 knockout mice as demonstrated by attenuated expression of S1 PR1 and reduced phosphorylation of nuclear factor kappa B p65 and STAT3. The proinflammatory cytokines interleukin-1 β, interleukin-6 and tumor necrosis factor-α were also inhibited by Sph K1 genetic deletion. The oxidative stress markers were lower in Sph K1 knockout mice after I/R injury than wild type mice. Conclusions: Knockout of Sph K1 significantly alleviated damage after hepatic I/R injury, possibly through inhibiting inflammation and oxidative stress. Sph K1 may be a novel and potent target in clinical practice in I/R-related liver injury.

关键词： Ischemia/reperfusion injury Sphingosine kinase 1 Inflammation Oxidative stress

Design and preparation of highly crystalline K-intercalated W@PCN:an efficient material for aniline elimination

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Rare Metals 2024年第3期43卷 1337-1342页

作者： Hao-Fei Li Kai-Wen Yu Xiao-Bi Jing Lei Duan yi-yang zhang School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou225002China School of Mechanical Engineering Yangzhou UniversityYangzhou225127China School of Material Science and Engineering Huazhong University of Science and TechnologyWuhan430071China School of Chemical Engineering and Materials Changzhou Institute of TechnologyChangzhou213032China Department of Basic Courses Army Engineering University of PLANanjing211101China

In this paper,we designed and prepared the polymeric carbon nitride-supported tungsten(W@PCN)*** were employed as the catalysts for photocatalytic oxidation of aniline in *** the process,H_(2)O_(2)was initially generated via the PCN-catalyzed *** by supported tungsten,aniline was oxidized by the in situ generated H_(2)O_(2)to obtain less toxicpoly aniline.

关键词： materials aniline crystalline

Magneto‑Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility

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Nano-Micro Letters 2025年第2期17卷 401-416页

作者： Chen Li Leilei Liang Baoshan zhang yi yang Guangbin Ji School of Electronic Science and Engineering Nanjing UniversityNanjing 210093People’s Republic of China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR cloaking mechanisms and functional integration ***,we propose a multiscale hierarchical structure design,integrating wrinkled MXene IR shielding layer and flexible Fe_(3)O_(4)@C/PDMS microwave absorption *** top wrinkled MXene layer induces the intensive diffuse reflection effect,shielding IR radiation signals while allowing microwave to pass ***,the permeable microwaves are assimilated into the bottom Fe_(3)O_(4)@C/PDMS layer via strong magneto-electric *** theoretical and experimental optimization,the assembled stealth devices realize a near-perfect stealth capability in both X-band(8–12 GHz)and long-wave infrared(8–14μm)wavelength ***,it delivers a radar cross-section reduction of−20 dB m^(2),a large apparent temperature modulation range(ΔT=70℃),and a low average IR emissivity of ***,the optimal device demonstrates exceptional curved surface conformability,self-cleaning capability(contact angle≈129°),and abrasion resistance(recovery time≈5 s).This design strategy promotes the development of multispectral stealth technology and reinforces its applicability and durability in complex and hostile environments.

关键词： Microwave absorption Radar-infrared compatible stealth Wrinkled MXene Magneto-dielectric synergy Multifunction

The investigation of the stability of DNA-b-PPO vesicles formed through frame guided assembly

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Science China Chemistry 2018年第12期61卷 1568-1571页

作者： Bo Bian yi-yang zhang Yuan-Chen Dong Fen Wu Chao Wang Shuo Wang Yun Xu Dong-Sheng Liu Department of Chemistry Tsinghua University College of Chemistry and Materials Engineering Wenzhou University Center for Medical Device Evaluation China Food and Drug Administration (CFDA)

Frame-guided assembly is a novel assembly method which can control the shape and size of vesicles accurately. It has been reported that the DNA-b-PPO vesicles could be stable over two weeks. In this communication we have introduced restriction sites of EcoR1 in the interior DNA scaffold to the formed vesicles in order to further study their stability. Dynamic light scattering(DLS), transmission electron microscope(TEM) and fluorescence spectrum were used to characterize the digestion process. The final results revealed that the vesicles were still stable even after two weeks cultivated with EcoR1, which suggests potential in future biological applications.

关键词： frame-guided assembly vesicles stability restriction sites EcoR1

A new alvarezsaurid dinosaur from the Late cretaceous Qiupa Formation of Luanchuan,Henan Province,central China

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China Geology 2018年第1期1卷 28-35页

作者： Jun-chang Lu Li Xu Hua-li Chang Song-hai Jia Ji-ming zhang Dian-song Gao yi-yang zhang Cheng-jun zhang Fang Ding Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Henan Geological Museum Zhengzhou 450016China College of Earth Sciences & Key Laboratory of Mineral Resources of Gansu Province Lanzhou UniversityLanzhou 730000China

An alvarezsaurid dinosaur skeleton was discovered from the Late Cretaceous Qiupa Formation of Luanchuan,Henan Province of eenttral *** represents a new alvarezsaurid dinosaur Qiupanykus zhangi *** ***.A phylogenetic analysis recovers Qiupanykus nested within the unresolved clade,which includes Asian and north American *** skeleton of the new specimen is preserved in association with *** eggshell morphologies show that these eggs belong to oviraptorid eggs,skeletal remains of which were discovered from the same *** alvarezsaurid skeleton associated with eggshell fragments may indicate that these eggs were broken by the strong thumb-claws of the former and that alvarezsaurid dinosaurs may be egg-eaters.

关键词： Vertebrate paleontology Alvarezsaurid dinosaur Qiupanykus Late Cretaceous Central China

Public knowledge of heart attack symptoms in Beijing residents

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Chinese Medical Journal 2007年第18期120卷 1587-1591页

作者： zhang Qing-tan HU Da-yi yang Jin-gang zhang Shou-yan zhang Xin-quan LIU Shu-shan Cardiovascular Center Beijing Tong Ren Hospital CapitalMedical University Beijing 100730 China

Background Definitive treatment for heart attack is early reperfusion with either angioplasty or thrombolytic therapy, and the benefit is strictly time-dependent. Patient outcomes are improved with either therapy when initiated as soon as possible. Recognition of heart attack symptoms is logically tied to taking action to receive prompt emergency care. Inadequate knowledge of heart attack symptoms may prolong delay. The purpose of this study was to document knowledge about heart attack symptoms in Beijing residents and to identify the characteristics associated with increased knowledge of heart attack. Methods A structured survey was conducted in 18 communities in Beijing from March 1 through June 10 in 2006. Addresses and participants were selected randomly following a stratification. The survey was designed to collect knowledge of heart attack symptoms from sampled adults in each community. Results A total of 4627 respondents completed the questionnaires correctly, and 50.29% of them were female. Totally 64.15% of the respondents reported chest pain or discomfort （common symptoms） as a symptom of heart attack; 75.38% reported at least one of the following eight symptoms as a symptom of heart attack： back pain, shortness of breath, arm pain or numbness, nausea or vomiting, neck, jaw or shoulder pain, epigastric pain, sweating, weakness （less common symptoms）; 20.36% correctly reported four or more heart attack symptoms, only 7.4% knew all the correct heart attack symptoms, and 28.94% knew about reperfusion therapy for heart attack; 31.7% reported to call 120 or 999 while having a heart attack themselves; however 89.6% reported to call 120 or 999 when someone else is suffering from a heart attack. Very old persons and those with health insurance coverage, high education level, high household income, longer living in Beijing and previous experience with heart disease had greater knowledge of heart attack symptoms. Conclusions Public knowledge of common heart at

关键词： heart attack symptoms knowledge

Preparation of Low Ratio Magnesium Ccement by Acid Leaching Treatment of Boron Mud

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 120-129页

作者： yang Mei zhang Mingzhe CHEN Hao School of Materials Science and Engineering Shenyang Jianzhu UniversityShenyang 110168China School of Physical Science and Technology Shenyang Normal UniversityShenyang 110168China

The effects of liquid-solid ratio and reaction time on the leaching rate of magnesium at room temperature were investigated,as well as the effects of the molar ratio of MgO/MgCl_(2),the amount of water added,and the amount of acid-impregnated slag dosed on the compressive strength and water resistance of *** results showed that the magnesium element in the boron mud could be maximally leached under the conditions of 1:1 concentration of hydrochloric acid at room temperature,liquid-solid ratio of 2.5 mL·g^(-1),and reaction time of 5 h,and the main products were amorphous SiO_(2) as well as a small amount of magnesium olivine which had not been completely *** LR-MOC prepared using the acid-soaked mixture could reach a softening coefficient of 0.85 for 28 d of water immersion when the molar ratio of MgO/MgCl_(2) was 2.2,the amount of water added was 0 g,and the acid-soaked slag dosing was 40 wt%,which also led to an appreciable late-strength,with an increase of 19.4%in compressive strength at 28 d compared to that at 7 *** previous studies,LR-MOC prepared in this way has a final strength phase that is not the more easily hydrolysed 3-phase but the lath-like *** this phenomenon,we analyzed the mechanism and found that,during the acid leaching process,a part of amorphous SiO_(2) dissolved in the acid leaching solution formed a silica sol,in which Mg^(2+)played a bridging role to make the silica sol more *** the addition and hydrolysis of MgO,the silica sol gel coagulation slows down,providing a capping layer to inhibit the hydrolysis of the 5-phase crystals and providing some strength after *** amorphous SiO_(2) in the other part of the acid-impregnated slag generated M-S-H gel with Mg^(2+)and OH-,which synergised with the dense structure composed of interlocking crystals to improve the water resistance of LR-MOC.

关键词： boron mud magnesium chloride-oxygen cement acid immersion water resistance silica sol