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钙化斑块对冠状动脉CTA诊断准确性的影响

中国医学影像学杂志 2020年第10期28卷 741-745页

作者：许丽雪李芳罗南郭宁化冰刘清波贺毅王振常杨正汉首都医科大学附属北京友谊医院放射科北京100050 数坤(北京)网络科技有限公司北京100102 首都医科大学附属北京友谊医院心内科北京100050

目的以冠状动脉造影(CAG)为参考标准,分析不同钙化负荷对视觉与深度学习(DL)算法诊断冠状动脉CT血管成像(CCTA)管腔狭窄准确性的影响。资料与方法对110例同时行CAG与256排CCTA的住院患者进行回顾性分析。采用视觉法与DL算法诊断CCTA主... 详细信息

目的以冠状动脉造影(CAG)为参考标准,分析不同钙化负荷对视觉与深度学习(DL)算法诊断冠状动脉CT血管成像(CCTA)管腔狭窄准确性的影响。资料与方法对110例同时行CAG与256排CCTA的住院患者进行回顾性分析。采用视觉法与DL算法诊断CCTA主干管腔狭窄情况,以管腔狭窄≥50%作为诊断界值。冠状动脉各节段的钙化负荷通过视觉评估分为无、轻度、中度及重度钙化。采用受试者工作特征曲线比较各节段水平不同钙化负荷下两种方法的诊断效能。结果随着钙化负荷增加,从无钙化节段至重度钙化节段,两种方法对冠状动脉狭窄的诊断准确度显著减低,视觉法由94.5%降至78.3%(P0.05)。结论不同钙化负荷下,DL算法对256排CCTA主干管腔狭窄的诊断效能与视觉评估相当。随着钙化负荷增加,两种方法的诊断准确性均降低。

关键词：冠状动脉狭窄冠状血管血管造影术体层摄影术螺旋计算机深度学习钙化负荷

An efficient iO-based data integrity verification scheme for cloud storage

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Science China(Information Sciences) 2019年第5期62卷 237-239+243页

作者： lixue SUN Chunxiang xu Yuan ZHANG Kefei CHEN Center for Cyber Security School of Computer Science and EngineeringUniversity of Electronic Science and Technology of China Department of Electrical and Computer Engineering University of Waterloo School of Science Hangzhou Normal University

Dear editor,With the advent of big data, an increasing number of people are storing their data on remote cloud servers. Cloud storage services enable users to flexibly maintain and access their data via mobile or wireless networks. However, despite these benefits, cloud storage deprives users of physical control over their data, which poses new challenges in data security [1–4]. Data integrity protection is one of the most important of these security chal-

关键词： TPA An efficient iO-based data integrity verification scheme for cloud storage

Secure searchable public key encryption against insider keyword guessing attacks from indistinguishability obfuscation

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Science China(Information Sciences) 2018年第3期61卷 228-230页

作者： lixue SUN Chunxiang xu Mingwu ZHANG Kefei CHEN Hongwei LI Center for Cyber Security School of Computer Science and EngineeringUniversity of Electronic Science and Technology of China School of Computer Science Hubei University of Technology School of Science Hangzhou Normal University Laboratory of Science and Technology on Communication Security

Public key encryption with keyword search(PEKS)enables one to search encrypted data containing some keyword without decrypting the data in public key *** et al.[1]introduced the notion of PEKS,but later Byun et al.[2]showed the scheme in[1]is vulnerable to the outsider/insider keyword guessing attacks(KGA).Many previous PEKS studies have tackled the

关键词： SKS IND PKI MAC SKR Mac PKR

Influence of incorporating beta zeolite nanoparticles on water permeability and ion selectivity of polyamide nanofiltration membranes

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Journal of Environmental Sciences 2020年第12期32卷 77-84页

作者： Baoleerhu Borjigin lixue Liu Ling Yu Lili xu Changwei Zhao Jun Wang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China National Engineering Laboratory for Industrial Wastewater Treatment Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

A novel polyamide(PA) thin film nanocomposite(TFN) membrane modified with Beta( β) zeolite was prepared by interfacial polymerization on a poly(ether sulfone)(PES) ultrafiltration membrane. Compared with the PA thin film composite(TFC) membrane, the introduction of β zeolite with porous structure notably increased the water flux of TFN membrane. Because the β zeolite with tiny-sized and well-defined inner-porous acted as prior flow channels for water molecules and a barrier for the sulfate ions. The successful introduction of β zeolite into the(PA) selective layer and their dispersion in the corresponding layer were verified by scanning electron microscope(SEM) and atomic force microscopy(AFM). Water contact angle, zeta potential measurements were used to characterize the changes of membrane surface properties before and after incorporating the β zeolite. With the β zeolite introducing, the water contact angle of modified TFN membrane was decreased to 47.8°, which was benefited to improve the water flux. Meanwhile, the negative charges of the modified TFN membrane was increased, resulting in an enhancement of separation effect on SO4^2- and Cl^-. In term of nanofiltration(NF) experiments, the highest pure water flux of the TFN membranes reached up to 81.22 L m^(-2) hr^-1 under operating pressure of 0.2 MPa, which was 2.5 times as much as the pristine TFC membrane.

关键词： βzeolite Nanofiltration membrane Interfacial polymerization High flux

不同核桃壳配比的栽培基质对香菇生长及产量的影响

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南方农业 2024年第21期18卷 23-28页

作者：罗红梅李娥贤赵龙徐丽学宋春艳李树红云南省农业科学院生物技术与种质资源研究所云南昆明650223 云南大学农学院云南昆明650504 昆明市官渡区人民政府六甲街道办事处云南昆明650200 上海市农业科学院食用菌研究所/农业农村部南方食用菌资源利用重点试验室/国家食用菌工程技术研究中心上海201403

利用云南省核桃产业副产物核桃壳,以10%、20%、30%、40%配比替代主料木屑探索香菇栽培的优良配比,提升核桃产业价值,实现食用菌产业可持续发展。通过养菌期间菌丝生长情况、出菇期子实体农艺性状调查和成分检测,与常规栽培料进行对照,... 详细信息

利用云南省核桃产业副产物核桃壳,以10%、20%、30%、40%配比替代主料木屑探索香菇栽培的优良配比,提升核桃产业价值,实现食用菌产业可持续发展。通过养菌期间菌丝生长情况、出菇期子实体农艺性状调查和成分检测,与常规栽培料进行对照,核桃壳替代主料栽培香菇对菌丝生长的影响不明显,甚至核桃壳占比30%的EG菌丝生长速度较CK快;不同核桃壳添加比例对于香菇子实体农艺性状和产量有一定影响,但差异不明显;4个EG香菇营养成分接近或高于CK,如粗多糖、总氨基酸和粗纤维高于CK;7种人体必需氨基酸中,赖氨酸、亮氨酸、异亮氨酸、缬氨酸和苏氨酸含量4个EG均高于CK,EG D蛋氨酸含量高于CK,EG B、EG C和EG D苯丙氨酸含量高于CK;4个EG天冬氨酸、谷氨酸和丙氨酸含量都高于CK。核桃壳作为主料替代木屑栽培香菇,对香菇生长及农艺性状无不良影响,且风味和品质有所提升。核桃壳作为香菇栽培替代料切实可行,具有进一步试验研究和推广应用价值。

关键词：香菇栽培核桃壳替代料营养生长生殖生长品质分析

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Electric field and photoelectrical effect bi-enhanced hydrogen evolution reaction

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Nano Research 2018年第6期11卷 3205-3212页

作者： Mengyu Yan xunbiao Zhou xuelei Pan dunhui Wang lixue Xia Kesong Yu Xiaobin Liao xu xu Liang He Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Materials Science and Engineering Department University of Washington Seattle Washington 98195-2120 USA

Molybdenum disulfide （MoS2） is an earth-abundant and low-cost hydrogen evolving electrocatalyst with the potential to replace traditional noble metal catalysts. The catalytic activity can be significantly enhanced after modification due to higher conductivity and enriched active sites. However, the underlying mechanism of the influence of the resistance of electrode material and contact resistance on the hydrogen evolution reaction （HER） process is unclear. Herein, we present a systematic study to understand the relationship between HER performance and electrode conductivity, which is bi-tuned through the electric field and photoelectrical effect. It was found that the onset overpotential consistently decreased with the increase of electrode conductivity. In addition, the reduction of the contact resistance resulted in a quicker electrochemical reaction process than enhancing the conductivity of the MoS2 nanosheet. An onset overpotential of 89 mV was achieved under 60 mW/cm^2 sunlight illumination （0.6 sun） and a simultaneous gate voltage of 3 V. These physical strategies can also be applied to other catalysts, and offer new directions to improve HER catalytic performance of semiconductor materials.

关键词： electrochemical device hydrogen evolution reaction photoelectrical effect field effect

Cobalt-doped Mn3O4 nanocrystals embedded in graphene nanosheets as a high-performance bifunctional oxygen electrocatalyst for rechargeable Zn–Air batteries

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Green Energy & Environment 2020年第4期5卷 499-505页

作者： Mengyang Dong xu Liu lixue Jiang Zhengju Zhu Yajie Shu Shan Chen Yuhai Dou Porun Liu Huajie Yin Huijun Zhao Centre for Clean Environment and Energy Griffith UniversityGold Coast CampusQLD 4222Australia

A non-noble-metal bifunctional catalyst with efficient and durable activity towards both the oxygen reduction reaction(ORR)and the oxygen evolution reaction(OER)is crucial to the development of rechargeable Zn-air ***,a facile one-step hydrothermal method is reported for the synthesis of a high-performance bifunctional oxygen electrocatalyst,cobalt-doped Mn_(3)O_(4) nanocrystals supported on graphene nanosheets(Co–Mn_(3)O_(4)/G).Compare to pristine Mn_(3)O_(4),this Co–Mn_(3)O_(4)/G exhibits greatly enhanced electrocatalytic activity,delivering a halfwave potential of 0.866 V for the ORR and a low overpotential of 275 mV at 10 mA cm^(-2) for the *** zinc-air battery built with Co–Mn_(3)O_(4)/G shows a reduced charge–discharge voltage of 0.91 V at 10 mA cm^(-2),an power density of 115.24 mW cm^(-2) and excellent stability without any degradation after 945 cycles(315 h),outperforming the state-of-the-art Pt/C–Ir/C catalyst-based device.

关键词： Mn_(3)O_(4) Bifunctional electrocatalysts Oxygen reduction reaction Oxygen evolution reaction Zinc air battery

Light-up lipid droplets for the visualization of lipophagy and atherosclerosis by coumarin-derived bioprobe

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Chinese Chemical Letters 2021年第8期32卷 2385-2389页

作者： Jinrong Zheng Shuheng Qin Lijuan Gui Hua Li lixue Fan Yifei Yang Haiyan Chen Hui xu Zhenwei Yuan Department of Biomedical Engineering School of EngineeringChina Pharmaceutical UniversityNanjing 210009China School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation(Yantai University)Ministry of EducationCollaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of ShandongYantai UniversityYantai 264005China Department of Food Quality and Safety College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and ProcessingNanjing University of Finance and EconomicsNanjing 210023China

Lipid droplets(LDs) are intracellular lipid-metabolism organelles that involved in many physiological processes,metabolic disorders as well as diseases such as ***,the specific probes that can visually locate abnormal LDs-rich tissues and track LDs-associated behavior to the naked eye with adequate biosafety still are ***,we develop a new design strategy of LDs-targeted probe based on the solvatochromism of coumarin *** results revealed that the emission wavelength of coumarin fluorophores gradually red shift in different solvents with increasing polarity,while absorption wavelength almost *** a result,the enlarged stokes shift of coumarin was emerged from oil to ***,properly reducing water solubility and adding electronic donor at the structure of coumarins can enlarge this type of *** discovery was utilized to develop suitable probe for the image of LDs and LDs-rich tissues with high resolution and ***,LDs-associated behavior was visible to the naked eye during the process of lipophagy and *** deem that the developed probe here offers a new possibility to accurately diagnosis and analyse LDs-related diseases in clinic and preclinical study.

关键词： Lipid droplets Probe Lipophagy Atherosclerosis

Compositional and Hollow Engineering of Silicon Carbide/Carbon Microspheres as High-Performance Microwave Absorbing Materials with Good Environmental Tolerance

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Nano-Micro Letters 2024年第9期16卷 128-146页

作者： lixue Gai Yahui Wang Pan Wan Shuping Yu Yongzheng Chen Xijiang Han Ping xu Yunchen Du MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China Anhui Provincial Laboratory of Advanced Laser Technology College of Electronic EngineeringNational University of Defense TechnologyHefei 230037People’s Republic of China

Microwave absorbing materials(MAMs)characterized by high absorption efficiency and good environmental tolerance are highly desirable in practical *** silicon carbide and carbon are considered as stable MAMs under some rigorous conditions,while their composites still fail to produce satisfactory microwave absorption performance regardless of the improvements as compared with the ***,we have successfully implemented compositional and structural engineering to fabricate hollow Si C/C microspheres with controllable *** simultaneous modulation on dielectric properties and impedance matching can be easily achieved as the change in the composition of these *** formation of hollow structure not only favors lightweight feature,but also generates considerable contribution to microwave attenuation *** the synergistic effect of composition and structure,the optimized SiC/C composite exhibits excellent performance,whose the strongest reflection loss intensity and broadest effective absorption reach-60.8 dB and 5.1 GHz,respectively,and its microwave absorption properties are actually superior to those of most SiC/C composites in previous *** addition,the stability tests of microwave absorption capacity after exposure to harsh conditions and Radar Cross Section simulation data demonstrate that hollow SiC/C microspheres from compositional and structural optimization have a bright prospect in practical applications.

关键词： SiC/C composites Compositional engineering Hollow engineering Microwave absorption Environmental tolerance