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Research trends in electron-doped cuprate superconductors

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Science China(Physics,Mechanics & Astronomy) 2015年第10期58卷 1-11页

作者： YUAN Jie HE Ge YANG Hua shi yujun ZHU BeiYi JIN Kui Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences

In this review, we look back on some intriguing and puzzling issues in electron-doped cuprate superconductors, such as electron-hole asymmetry, two types of carriers, quantum critical points, order-parameter symmetry, etc. The necessity of study on this family is invoked in comparison with the hole-doped counterparts from several aspects. The related progress, especially in last few years, has been outlined point to point, as well as other hot topics like the discovery of ambipolar superconductors, the applications in superconducting electronics, and the emergency of superconductivity in parent compounds. In perspective, the utilization of blooming advanced techniques, electric double layer transistor and combinatorial film deposition, will bring some new insights into the mechanism such as electron-doped cuprate superconductors.

关键词： electron-doped electronic structure quantum critical phenomena

Water-soluble supramolecular polymers constructed by macrocycle-based host-guest interactions

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Chinese Chemical Letters 2019年第1期30卷 37-43页

作者： Yanmei Chen Siyu Sun Dou Lu yujun shi Yong Yao School of Environmental and Chemical Engineering Jiangsu University of Science and Technology College of Chemistry and Chemical Engineering Nantong University

Supramolecular polymers, which combined of the supramolecular chemistry and polymer science, are constructed from monomers together by reversible noncovalent interactions. Supramolecular polymers in aqueous solution are especially important due to their superior biocompatibility and environmental adaptation, which determined they have wide applications in various areas, such as drug delivery, selfhealing, shape memory. Macrocyclic compounds, such as cyclodextrins, calixarenes, cucurbiturils and pillar[n]arenes, are the most used building blocks in the preparation of supramolecular ***-based supramolecular polymers, which introduce the host-guest interaction in the system,endow these polymers with interesting and smart physical-chemical properties. In this review, we summarized recent studies about supramolecular polymers in aqueous solution based on macrocyclic compounds.

关键词： Supramolecular polymers Macrocyclic compounds Host-guest interaction Stimuli-responsiv Drug delivery

Formation Mechanism of Curved Martensite Structures in Cu-based Shape Memory Alloys

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Journal of Materials Science & Technology 2000年第1期16卷 79-81页

作者： yujun BAI, Qiquan shi,Guili GENG, Dongsheng SUN and Xiufang BIAN (Institute of Materials Engineering, Shandong University of Technology, Jinan 250061, China) Institute of Materials Engineering Shandong University of Technology Jinan 250061 China

The curved martensite structures have been observed in CuZnAI-based shape memory alloys by both transmission electron microscope and optical microscope. It was found that the curved martensite structures observed in as-solution treated, as-aged and as-trained alloys usually occurred around dislocation tangles or precipitate, at the plate boundary or grain boundary, and when the growing plates collided with each other or alternate mutually.

关键词： Formation Mechanism of Curved Martensite Structures in Cu-based Shape Memory Alloys Cu

A self-powered piezoelectret sensor based on foamed plastic garbage for monitoring human motions

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Nano Research 2023年第1期16卷 1269-1276页

作者： yujun shi Kaijun Zhang Sen Ding Zhaoyang Li Yuhao Huang Yucong Pi Dazhe Zhao Yaowen Zhang Renkun Wang Binpu Zhou Zhi-Xin Yang Junwen Zhong Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics University of MacaoMacao 999078China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoAvenida da UniversidadeMacao 999078China State Key Laboratory of Internet of Things for Smart City and Department of Electromechanical Engineering University of MacaoMacao 999078China

Constructing piezoelectret based on foamed plastic garbage is an advisable strategy for obtaining self-powered flexible electromechanical sensors with good ***,a self-powered piezoelectret sensor with basic material of low density polyethylene(LDPE)foamed plastic garbage is proposed,with characteristics of easy fabrication,excellent flexibility,and high equivalent piezoelectric coefficient d33 value up to~1,100 pC/*** output stability is verified by continuously stimulating a sensor for~180,000 cycles under low and high applied pressure,and the variations of peak outputs are less than 5.5%.Applications for measuring low-and high-pressure signals from human body are *** with a wristband,a sensor is demonstrated for detecting the human pulse ***,real time human sitting information is wirelessly monitored with a smart chair based on 4 pixels sensors array.

关键词： wearable electronics piezoelectret self-powered pressure sensor mobile health

Regulated cell death in cancer:from pathogenesis to treatment

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Chinese Medical Journal 2023年第6期136卷 653-665页

作者： Linjing Gong Dong Huang yujun shi Zong’an Liang Hong Bu Department of Respiratory and Critical Care Medicine West China HospitalSichuan UniversityChengduSichuan 610041China Institute of Clinical Pathology Key Laboratory of Transplant Engineering and ImmunologyNHCWest China HospitalSichuan UniversityChengduSichuan 610041China Department of Pathology West China HospitalSichuan UniversityChengduSichuan 610041China

Regulated cell death(RCD),including apoptosis,pyroptosis,necroptosis,and ferroptosis,is regulated by a series of evolutionarily conserved pathways,and is required for development and tissue *** on previous genetic and biochemical explorations of cell death subroutines,the characteristics of each are generally considered ***,recent in-depth studies noted the presence of crosstalk between the different forms of RCD;hence,the concept of PANoptosis ***,a complex genetic disease,is characterized by stepwise deregulation of cell apoptosis and proliferation,with significant morbidity and mortality *** present,studies on the different RCD pathways,as well as the intricate relationships between different cell death subroutines,mainly focus on infectious diseases,and their roles in cancer remain *** cancers are characterized by dysregulated cell death and inflammatory responses,most current treatment strategies aim to selectively induce cell death via different RCD pathways in cancer *** this review,we describe five types of RCD pathways in detail with respect to tumorigenesis and cancer *** potential value of some of these key effector molecules in tumor diagnosis and therapeutic response has also been *** then review and highlight recent progress in cancer treatment based on PANoptosis and ferroptosis induced by small-molecule compounds,immune checkpoint inhibitors,and ***,these findings may provide meaningful evidence to fill in the gaps between cancer pathogenesis and RCD pathways to develop better cancer therapeutic strategies.

关键词： Anti-cancer therapy Apoptosis Cancer Programmed cell death Pyroptosis PANoptosis Necroptosis Ferroptosis Diagnosis death Pyroptosis PANoptosis Necroptosis Ferroptosis Diagnosis

Macro-/micro-coupling regulation of nanoporous metals via vapor phase alloying-dealloying

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Science China Materials 2021年第6期64卷 1521-1533页

作者： yujun shi Ying Zhang Jingyu Qin Zhonghua Zhang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061China

Nanoporous metals with bicontinuous ligament-channel structure are of great importance in catalysis,electro-catalysis,actuation and energy storage and ***,the intrinsic brittleness of nanoporous metals has always been the“Achilles heel”that impedes their practical *** the vapor pressure difference of metals,herein we propose a flexible and general vapor phase alloying(VPA)-dealloying strategy to fabricate nanoporous layers supported on the substrates with the same *** adjusting the VPA time and temperature,the thickness and microstructure control over nanoporous layers can be realized by combining with diverse dealloying ***,various metals including Ag,Au,Cu,Co and Ni with different macro sizes and shapes can be fabricated into nanoporous structures through this *** importantly,the greatly improved tensile ductility owing to the nanoporous layersubstrate structure and well enhanced catalytic performance for hydrogen evolution reaction of the as-fabricated nanoporous metals signify great potentials of the VPA-dealloying strategy for practical applications.

关键词： nanoporous metals vapor phase alloying-dealloying macro and micro regulation of nanostructure dealloying mechanism mechanical properties

Deletion of SMARCA4 impairs alveolar epithelial type II cells proliferation and aggravates pulmonary fibrosis in mice

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Genes & Diseases 2017年第4期4卷 204-214页

作者： Danyi Peng Daozhu Si Rong Zhang Jiang Liu Hao Gou Yunqiu Xia Daiyin Tian Jihong Dai Ke Yang Enmei Liu yujun shi Q.Richard Lu Lin Zou Zhou Fu Pediatric Research Institute Children’s Hospital of Chongqing Medical UniversityMinistry of Education Key Laboratory of Child Development and DisordersChina International Science and Technology Cooperation Base of Child Development and Critical DisordersChongqing 400014China Department of Respiratory Medicine Children’s Hospital of Chongqing Medical UniversityChongqing 400014China Centre for Clinical Molecular Medicine Children’s Hospital of Chongqing Medical UniversityChongqing 400014China Chongqing Engineering Research Centre of Stem Cell Therapy Chongqing 400014China Laboratory of Pathology West China HospitalSichuan UniversityChengdu 610041China Key Laboratory of Birth Defects and Related Diseases of Women and Children(Ministry of Education) State Key Laboratory of BiotherapyWest China Second HospitalSichuan UniversityChengdu 610041China

Alveolar epithelial cells(AECs)injury and failed reconstitution of the AECs barrier are both integral to alveolar flooding and subsequent pulmonary fibrosis(PF).Nevertheless,the exact mechanisms regulating the regeneration of AECs post-injury still remain ***4 is a part of the large ATP-dependent chromatin remodelling complex SWI/SNF,which is essential for kidney and heart *** investigates SMARCA4 function in lung fibrosis by establishing PF mice model with bleomycin firstly and found that the expression of SMARCA4 was mainly enhanced in alveolar type II(ATII)***,we established an alveolar epithelium-specific SMARCA4-deleted SP-C-rtTA/(tetO)7-Cre/SMARCA4f/f mice(SOSM4D/D)model,as well as a new SMARCA4-deleted alveolar type II(ATII)-like mle-12 cell *** found that the bleomycin-induced PF was more aggressive in SOSM4D/D ***,the proliferation of ATII cells was decreased with the loss of SMARCA4 in vivo and in *** addition,we observed increased proliferation of ATII cells accompanied by abnormally high expression of SMARCA4 in human PF lung *** data uncovered the indispensable role of SMARCA4 in the proliferation of ATII cells,which might affect the progression of PF.

关键词： Cell proliferation Pulmonary fibrosis SMARCA4 Transgenic mice Type II alveolar epithelial cells

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气门外弹簧动态应力与振动频率的测量与分析

内燃机工程 1989年第4期10卷 46-52页

作者：石聿俊武汉工学院

本文介绍了气门弹簧动态应力及振动频率的测量方法,对气门弹簧的动态规律作了初步分析。文中还对295型柴油机气门外弹簧强度进行了校核。

关键词：气门弹簧动态应力柴油机

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两种典型的场调制型永磁电机的对比分析

电工技术学报 2021年第1期36卷 120-130页

作者：石玉君程子活蹇林旎澳门大学机电工程系澳门999078 深圳市电力直驱技术重点实验室(南方科技大学) 深圳518055

该文对比分析了两种典型的场调制型永磁电机,即常规永磁游标电机和双永磁励磁电机的性能和特点。首先介绍两种电机的结构,总结它们的结构特点;接着通过推导两种电机的一般性表达式,即空载反电动势及输出转矩,揭示两种电机的工作原理,比... 详细信息

该文对比分析了两种典型的场调制型永磁电机,即常规永磁游标电机和双永磁励磁电机的性能和特点。首先介绍两种电机的结构,总结它们的结构特点;接着通过推导两种电机的一般性表达式,即空载反电动势及输出转矩,揭示两种电机的工作原理,比较“单向磁场调制效应”与“双向磁场调制效应”;最后利用有限元法对比分析两台电机的性能,验证一般性表达式的正确性。有限元仿真结果表明,在相同的尺寸、定子槽数、定子齿数、绕组极对数、转子磁体极对数、线圈匝数、绕组联结方式、电负荷、铜损耗及转速的条件下,双永磁励磁电机在永磁体用量、反电动势、转矩密度、单位磁体体积的转矩、功率因数及效率方面优于常规永磁游标电机。

关键词：磁场调制永磁电机转矩密度游标电机