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Nanometric polishing of lutetium oxide by plasma-assisted etching

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Advances in Manufacturing 2020年第4期8卷 440-446页

作者： peng lyu Min Lai Feng-Zhou Fang State Key Laboratory of Precision Measuring Technology and Instruments Centre of Micro/Nano Manufacturing Technology(MNMT)Tianjin UniversityTianjin 300072People’s Republic of China Centre of Micro/Nano Manufacturing Technology(MNMTDublin) School of Mechanical and Materials EngineeringUniversity College Dublin.Dublin 4Ireland

Plasma-assisted etching,in which the irradiation of hydrogen plasma and inorganic acid etching are integrated,is proposed as a novel polishing method for sesquioxide *** means of this approach,low damage and even damage-free surfaces with a high material removal rate can be achieved in lutetium oxide surface *** of transmission electron microscopy and X-ray photoelectron spectroscopy reveal that plasma hydrogenation converts the sesquioxide into hydroxide,which leads a high efficient way to polish the *** influences of process conditions on the etching boundary and surface roughness are also qualitatively investigated using scanning electron microscope and white light *** newly developed process is verified by a systematic experiment.

关键词： Plasma-assisted etching Lutetium oxide Surface roughness Subsurface damage

Sub-nanometer finishing of polycrystalline tin by inductively coupled plasma-assisted cutting

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Frontiers of Mechanical Engineering 2023年第3期18卷 233-249页

作者： peng lyu Min LAI Yifei SONG Zhifu XUE Fengzhou FANG State Key Laboratory of Precision Measuring Technology&Instruments Laboratory of MicroNano Manufacturing TechnologyMNMTTianjinUniversityTianjin300072China Centre of MicroNano Manufacturing Technology-MNMT-Dublin School of Mechanical&Materials EngineeringUniversity College DublinDublin4Ireland

Polycrystalline tin is an ideal excitation material for extreme ultraviolet light ***,the existence of grain boundary(GB)limits the surface roughness of polycrystalline tin after single-point diamond turning(SPDT).In this work,a novel method termed inductively coupled plasma(ICP)-assisted cutting was developed for the sub-nanometer finishing of polycrystalline *** relationship between ICP power,processing time,and modification depth was established by thermodynamic simulation,and the fitted heat transfer coefficient of polycrystalline tin was 540 W/(m2·K).The effects of large-thermal-gradient ICP treatment on the microstructure of polycrystalline tin were *** 0.9 kW ICP processing for 3.0 s,corresponding to the temperature gradient of 0.30 K/μm,the grain size of polycrystalline tin was expanded from a size of approximately 20-80μm to a millimeter *** Taguchi method was used to investigate the effects of rotational speed,depth of cut,and feed rate on *** conducted based on the ICP system indicated that the plasma-assisted cutting method promoted the reduction of the influence of GB steps on the finishing of polycrystalline tin,thereby achieving a surface finish from 8.53 to 0.80 nm in *** results of residual stress release demonstrated that the residual stress of plasma-assisted turning processing after 504 h stress release was 10.7 MPa,while that of the turning process without the ICP treatment was 41.6 MPa.

关键词： plasma-assisted cutting polycrystalline tin single-point diamond turning surface roughness

High-current pulsed electron beam modification on microstructure and performance of Cu/CuW diffusion bonding joints

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Rare Metals 2024年第6期43卷 2819-2831页

作者： Na-Na Tian Cong-Lin Zhang peng lyu Jin-Tong Guan Jie Cai Qing-Feng Guan Shun Guo School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China School of Material Science and Engineering Yancheng Institute of TechnologyYancheng 221051China Engineering Institute of Advanced Manufacturing and Modern Equipment Technology Jiangsu UniversityZhenjiang 212013China

This study investigates the influence of high-current pulsed electron beam(HCPEB)modification on the microstructure and shear strength of Cu/CuW *** solid-state diffusion bonding of modified-Cu(MCu)and modified-CuW(M-CuW)was achieved by HCPEB modification pretreatment at a temperature of 800-900℃and a pressure of 5 MPa for 10-50 *** demonstrate that HCPEB modification facilitates the dissolution of W and Cu,resulting in the formation of a Cu_(0.4)W_(0.6)solid solution and thus enhancing the uniform distribution of ***,HCPEB-induced defects play a beneficial role in promoting the diffusion process by providing fast diffusion paths for *** optimal joints with the maximum shear strength of 213.7 MPa were obtained through bonding M-Cu and M-CuW at 900℃and 5 MPa for 30 min,which attributes to the combined effects of fine-grained strengthening and solid solution ***,the application of HCPEB modification showcases its effectiveness in promoting element diffusion and enhancing the mechanical performance of the joints.

关键词： HCPEB Element diffusion Shear strength Crystal defects Surface modification

Identification of TWIST-interacting genes in prostate cancer

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Science China(Life Sciences) 2017年第4期60卷 386-396页

作者： peng lyu Shu-Dong Zhang Hiu-Fung Yuen Cian M.McCrudden Qing Wen Kwok-Wah Chan Hang Fai Kwok Faculty of Health Sciences University of Macao Avenida de Universidade Macao 999078 China Northern Ireland Centre for Stratified Medicine C-TRIC Building Altnagelvin Hospital Campus Ulster University Londonderry BT47 6SB UK Institute of Molecular and Cellular Biology Agency for Science Technology and Reseach Singapore 138673 Singapore School of Pharmacy Queen's University of Belfast Belfast BT9 7BL UK Centre for Cancer Research & Cell Biology School of Medicine Dentistry and Biomedical Sciences Queen's University Belfast Belfast BT9 7BL UK Department of Pathology Queen Mary Hospital University of Hong Kong Hong Kong 999077 China

Prostate cancer is one of the most common cancers in men worldwide, and the number of diagnosed patients has dramatically increased in recent years. Currently, the clinical parameters used to diagnose prostate cancer, such as Gleason score, pathological tumor staging, and prostate-specific antigen(PSA) expression level, are considered insufficient to inform recommendation to guide clinical practice. Thus, identification of a novel biomarker is necessary. TWIST is one of the well-studied targets and is correlated with cancer invasion and metastasis in several human cancers. We have investigated two largest prostate cancer patient cohorts available in GEO database and found that TWIST expression is positive correlated with Gleason score and associated with poorer survival. By using a prostate cancer cohort and a prostate cancer cell line dataset, we have identified three potential downstream targets of TWIST, PPM1 A, SRP72 and TBCB. TWIST's prognostic capacity is lost when the gene is mutated. Further investigation in the prostate cancer cohort revealed that gene expression of SERPINA, STX7, PDIA2, FMP5, GP1 BB, VGLL4,KCNMA1, SHMT2, SAA4 and DIDO1 influence the prognostic significance of TWIST and vice versa. Importantly, eight out of these ten genes are prognostic indicator by itself. In conclusion, our study has further confirmed that TWIST is a prognostic marker in prostate cancer, identified its potential downstream targets and genes that could possibly give additional prognostic value to predict TWIST-mediated prostate cancer progression.

关键词： Gleason prognostic staging cohort progression invasion downstream metastasis biomarker interacting

Extremely hidden multi-stability in a class of two-dimensional maps with a cosine memristor

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Chinese Physics B 2022年第10期31卷 331-340页

作者： Li-Ping Zhang Yang Liu Zhou-Chao Wei Hai-Bo Jiang Wei-peng lyu Qin-Sheng Bi Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang 212013China School of Mathematics and Statistics Yancheng Teachers UniversityYancheng 224002China Engineering Department Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUK School of Mathematics and Physics China University of GeosciencesWuhan 430074China

We present a class of two-dimensional memristive maps with a cosine memristor. The memristive maps do not have any fixed points, so they belong to the category of nonlinear maps with hidden attractors. The rich dynamical behaviors of these maps are studied and investigated using different numerical tools, including phase portrait, basins of attraction,bifurcation diagram, and Lyapunov exponents. The two-parameter bifurcation analysis of the memristive map is carried out to reveal the bifurcation mechanism of its dynamical behaviors. Based on our extensive simulation studies, the proposed memristive maps can produce hidden periodic, chaotic, and hyper-chaotic attractors, exhibiting extremely hidden multistability, namely the coexistence of infinite hidden attractors, which was rarely observed in memristive maps. Potentially,this work can be used for some real applications in secure communication, such as data and image encryptions.

关键词： two-dimensional maps memristive maps hidden attractors bifurcation analysis extremely hidden multi-stability

作为数据的劳动:网络主播的数字劳动及其治理研究

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社会科学 2023年第1期 153-168页

作者：吕鹏上海社会科学院新闻研究所

数字科技革命孕育了数字劳动这一新的劳动形式,也催生了短视频/直播这一新的数字平台。平台、数据、国家是网络主播数字劳动治理过程中密切关联又充满张力的三个维度:网络主播是数字劳动的主体;短视频/直播平台是数字劳动的场域;数据是... 详细信息

数字科技革命孕育了数字劳动这一新的劳动形式,也催生了短视频/直播这一新的数字平台。平台、数据、国家是网络主播数字劳动治理过程中密切关联又充满张力的三个维度:网络主播是数字劳动的主体;短视频/直播平台是数字劳动的场域;数据是数字劳动的生成物,也是平台和国家争夺和治理的对象。在平台上生存的数字劳动者有着数字劳动的自主性,但也面临着剥削并不断被异化,由此而主动和被动生成的各种乱象,以及那些被合理化了的支配关系,体现了数字平台的商业属性与其被期待具有的公共性之间的张力,凸显了国家进行数字劳动治理的必要性。在数字劳动治理的过程中,平台价值与国家价值导向之间的矛盾、平台私权力与国家公权力的矛盾、以人民为中心的发展思想和“数据殖民主义”以资本增殖为中心之间的矛盾等会进一步显露出来。国家要以积极的姿态介入到网络主播的数字劳动治理之中,将其作为新时代数字治理方案的一个有益的切入点,这意味着必须:推动关键数字科技的普及与普惠发展;在数据分类的前提下确定数据权属边界;探索建立国家与平台间的对话合作机制。

关键词：数字劳动网络主播短视频/直播平台数据治理

Obesity rather than Metabolic Syndrome is a Risk Factor for Subclinical Hypothyroidism and Thyroid Autoimmunity

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Biomedical and Environmental Sciences 2021年第10期34卷 819-823页

作者： YAO Jin Yin LIU peng ZHANG Wei WANG Ke Wei lyu Chun peng ZHANG Zhi Wei CHEN Xiang Lan CHEN Yi WANG Xue Song DING Yong Xia MA Li Jun WANG Jing SUN Dian Jun Center for Endemic Disease Control Chinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Institute of Endemic Disease Control Shandong ProvinceJinan 250000ShandongChina Heze Center for Disease Control and Prevention Heze 274000ShandongChina Jining Center for Disease Control and Prevention Jining 272000ShandongChina

In recent years,the incidences of thyroid diseases have gradually increased,and they may be associated with the development of diagnostic technologies,elevated public health awareness,nuclear radiation,environmental pollution,changes in lifestyle,work stress,excessive iodine intake,and other *** obesity can cause changes to the hypothalamic-pituitary-thyroid axis and deiodinase[1],obesity may be closely related to the high rate of thyroid diseases.

关键词： immunity obesity elevated

平台聚合、理念更迭与受众贴合:融合传播背景下我国电视节目的创新与发展

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电视研究 2022年第7期 28-31页

作者：吕鹏上海社会科学院新闻研究所上海社会科学院影视文化与视听传播研究中心

融合传播为我国电视节目的创新和发展提供了新的场景。作为主流传播媒体的电视,节目是其传播力、引导力、影响力及公信力提升的基础和保障。本文认为,面对科技快速发展所带来的传播情境变化,电视节目的创新与发展,需要在路径上实施平台... 详细信息

融合传播为我国电视节目的创新和发展提供了新的场景。作为主流传播媒体的电视,节目是其传播力、引导力、影响力及公信力提升的基础和保障。本文认为,面对科技快速发展所带来的传播情境变化,电视节目的创新与发展,需要在路径上实施平台聚合,在生产与制作理念上进行迭代更新,在内容生产与传播形式上努力贴合受众的需求。

关键词：融合传播电视节目平台聚合理念受众

推动正能量实现大流量的实践探索——以山东广播电视台党的二十大宣传为例

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电视研究 2022年第12期 12-15页

作者：吕芃山东广播电视台党委

党的二十大是2022年党和国家政治生活中的头等大事,是全党全国各族人民的历史性盛会。山东广播电视台切实提高政治站位,扛起主流媒体责任担当,紧扣迎接宣传贯彻党的二十大工作主线,从新闻宣传、纪录片专题片、文化节目三条线布局,创新... 详细信息

党的二十大是2022年党和国家政治生活中的头等大事,是全党全国各族人民的历史性盛会。山东广播电视台切实提高政治站位,扛起主流媒体责任担当,紧扣迎接宣传贯彻党的二十大工作主线,从新闻宣传、纪录片专题片、文化节目三条线布局,创新传播策略,持续锻造精品,让正能量始终澎湃大流量,全力营造了庄严热烈、团结喜庆的浓厚舆论氛围。

关键词：党的二十大新闻宣传纪录片专题片文化节目融合传播