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Chinese Journal of Aeronautics 2023年第4期36卷 556-564页

作者： Donghui GUO feifei zhou Baosheng XU Yiguang WANG You WANG Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Department of Materials Science School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China

Poor fracture toughness leads to premature failure of La_(2)(Zr_(0.75)Ce_(0.25))_(2)O_(7)(LCZ)ther-mal barrier coatings in an elevated temperature service environment.A novel coating material,namely(La_(0.2)Nd_(0.2)Sm_(0.2)Gd_(0.2)Yb_(0.2))_(2)(Zr_(0.75)Ce_(0.25))_(2)O_(7)(LNSGY)based on the high-entropy con-cept,was successfully fabricated by solid-state sintering.The microstructure of LCZ and LNSGY was investigated by X-Ray Diffraction(XRD),Raman Spectrometer(RS),Transmission Electronic Microscopy(TEM)and Scanning Electron Microscopy(SEM).The fracture toughness of the LCZ and LNSGY ceramics was evaluated.The LNSGY has excellent high-temperature phase stability,and the grain size of LNSGY ceramic is smaller than that of LCZ ceramic at an elevated temper-ature due to the sluggish diffusion effect.Compared with LCZ(fracture toughness is(1.4±0.1)MPa·m^(1/2)),the fracture toughness of LNSGY is significantly enhanced(fracture toughness is(2.0±0.3)MPa·m^(1/2)).Therefore,the LNSGY can be a promising advanced thermal barrier coat-ing material in the future.

关键词： Fracture toughness High-entropy ceramics High-temperature phase sta-bility Rare-earth zirconate Thermal barrier coatings

Winter soil CO_2 efflux in two contrasting forest ecosystems on the eastern Tibetan Plateau, China

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Journal of Forestry Research 2015年第3期26卷 679-686页

作者： Zhenfeng Xu feifei zhou Huajun Yin Qing Liu Institute of Forest & Ecology Sichuan Agricultural University Chengdu Institute of Biology Chinese Academy of Sciences

Significant CO2 fluxes from snow-covered soils occur in cold biomes. However, little is known about winter soil respiration on the eastern Tibetan Plateau of China. We therefore measured winter soil CO2 fluxes and estimated annual soil respiration in two contrasting coniferous forest ecosystems （a Picea asperata plantation and a natural forest）. Mean winter soil CO2 effluxes were 1.08 μmol m-2 s-1 in the plantation and 1.16 μmol m-2 s-1 in the natural forest. These values are higher than most reported winter soil CO2 efflux values for temperate or boreal forest ecosystems. Winter soil respiration rates were similar for our two forest ecosystems but mean soil CO2 efflux over the growing sea- son was higher in the natural forest than in the plantation. The estimated winter and annual soil effluxes for the natural forest were 176.3 and 1070.3 g m-2, respectively, based on the relationship between soil respiration and soil temperature, which were 17.2 and 9.7 % greater than their counterparts in the plantation. The contributions of winter soil respiration toannual soil efflux were 15.4 % tor the plantation and 16.5R for the natural forest and were statistically similar. Our results indicate that winter soil CO2 efflux from frozen soils in the alpine coniferous forest ecosystems of the eastern Tibetan Plateau was considerable and was an important component of annual soil respiration. Moreover, reforesta- tion （natural coniferous forests were deforested and refor- ested with P. asperata plantation） may reduce soil respiration by reducing soil carbon substrate availability and input.

关键词： Winter soil CO2 efflux Eastern TibetanPlateau Natural coniferous forest Picea asperataplantation

Digital quantum simulation of Floquet topological phases with a solid-state quantum simulator

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Photonics Research 2021年第1期9卷 81-87页

作者： BING CHEN SHUO LI XIANFEI HOU feifei GE feifei zhou PENG QIAN FENG MEI SUOTANG JIA NANYANG XU HENG SHEN School of Electronic Science and Applied Physics Hefei University of TechnologyHefei 230009China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China Stanford Institute for Materials and Energy Sciences Menlo ParkCalifornia 94025USA State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyShanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Clarendon Laboratory University of OxfordOxford 0X13PUUK

Harnessing the dynamics of complex quantum systems is an area of much interest and a quantum simulator has emerged as a promising platform to probe exotic topological phases.Since the flexibility offered by various controllable quantum systems has helped gain insight into the quantum simulation of such complicated problems,an analog quantum simulator has recently shown its feasibility to tackle the problems of exploring topological phases.However,digital quantum simulation and the detection of topological phases still remain elusive.Here,we develop and experimentally realize the digital quantum simulation of topological phases with a solid-state quantum simulator at room temperature.Distinct from previous works dealing with static topological phases,the topological phases emulated here are Floquet topological phases.Furthermore,we also illustrate the procedure of digitally simulating a quantum quench and observing the nonequilibrium dynamics of Floquet topological phases.Using a quantum quench,the 0-andπ-energy topological invariants are unambiguously detected through measuring time-averaged spin polarizations.We believe our experiment opens up a new avenue to digitally simulate and detect Floquet topological phases with fast-developed programmable quantum simulators.

关键词： temperature. topological quantum

Characterization and quantification of two acylated flavonol glycosides from Camellia sinensis and their antibacterial effect on oral pathogens

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Beverage Plant Research 2022年第1期2卷 1-9页

作者： feifei zhou Leiyu Yang Yingjie Gu Zhiwei Ge Yanmei Huang Hangye Zhao Bo Li Puming He Jiangfan Yang Youying Tu Yuanyuan Wu Department of Tea Science Zhejiang University866 Yuhangtang RoadHangzhou 310058China Analysis Center for Agrobiology and Environmental Sciences Zhejiang UniversityHangzhou 310058China College of Horticulture Fujian Agriculture and Forestry UniversityKey Laboratory of Tea Science at Universities in FujianFuzhou 350002China

Acylated flavonol glycosides(AFGs)are a new group of flavonoids with multiple pharmacological functions.In the present work,two AFGs were isolated with a combined chromatography technology from Camellia sinensis and identified as quercetin tetraglycosides with one p-coumaryl moiety(F1)and kaempferol tetraglycosides with one p-coumaryl moiety(F2)by ultra-performance liquid chromatography tandem mass spectrometry(UPLC-MS/MS)and nuclear magnetic resonance(NMR).F1 and F2 with high purity and quantity can be obtained through relatively simple steps,which is of great significance in industrial production and application.The quantification of two AFGs in different tea cultivars and different season samples was conducted using the high-performance liquid chromatography(HPLC)method.Among fifty tested tea cultivars,the contents of F1 and F2 were extremely high in'Zhenghe Dabaicha'and'Wannong 95',but these were undetectable in some tea cultivars.Relatively high contents of AFGs were found in autumn harvested tea samples which might be related to sunlight irradiation.Further in vitro experiments showed that F1 and F2 monomers were effective on inhibiting growth and biofilm development of Porphyromonas gingivalis and Fusobacterium nucleatum.This antibacterial activity was proven to involve the chelation of iron.These results provide useful information on AFGsrich tea resources and new insights of AFGs into effective agents against oral diseases.

关键词： method NMR moiety

早期强化康复在颈椎后路术后加速康复外科模式中的应用:一项混合方法研究

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中国康复理论与实践 2024年第4期30卷 468-478页

作者：张之良褚红玲刘小燮周谋望周非非北京大学第三医院康复医学科北京市100191 北京大学第三医院临床流行病学研究中心北京市100191 北京大学第三医院骨科北京市100191

目的采用混合方法探讨颈椎后路手术加速康复外科(ERAS)模式中纳入术后早期强化康复治疗的效果。方法定量研究选择2018年1月至2019年1月行颈椎后路椎管扩大成形术的患者,根据术后康复方案分为强化康复组41例和骨科治疗组33例。两组均按照... 详细信息

目的采用混合方法探讨颈椎后路手术加速康复外科(ERAS)模式中纳入术后早期强化康复治疗的效果。方法定量研究选择2018年1月至2019年1月行颈椎后路椎管扩大成形术的患者,根据术后康复方案分为强化康复组41例和骨科治疗组33例。两组均按照ERAS模式进行围手术期管理,强化康复组术后在康复专业团队指导下进行7 d住院强化康复治疗,骨科治疗组术后由骨科医师及护士进行常规宣教指导后于家中自行锻炼。术前和术后(90±14)d,采用疼痛视觉模拟评分(VAS)、改良日本骨科协会评分(mJOA)、颈椎功能障碍指数(NDI)和SF-36进行评定。定性研究另选取2019年5月至2019年11月行颈椎后路椎管扩大成形术的两组患者各12例,术后(7±2)d进行半结构式访谈。将定量研究和定性研究中相同维度结果进行比较与整合分析。结果定量研究结果表明,对于无C5神经根麻痹患者,两组术后90 d时VAS评分、mJOA评分、NDI评分均无显著性差异(U>0.140,P>0.05),SF-36评分的生理功能评分有显著性差异(U=2.031,P<0.05)。术后90 d的VAS评分(ρ_(1)=-0.522,ρ_(2)=-0.334,P<0.05)、NDI评分(ρ1=-0.681,ρ2=-0.590,P<0.05)与SF-36躯体健康和精神健康评分呈负相关,mJOA评分(ρ_(1)=0.408,ρ_(2)=0.304,P<0.05)与SF-36躯体健康和精神健康评分呈正相关。定性研究中,强化康复组在术后7 d时疼痛、颈椎功能、神经功能和生活质量方面的改善均优于骨科治疗组。结论术后早期强化康复治疗的效果主要体现在术后早期功能改善。对于无C5神经根麻痹患者,进行术后早期强化康复治疗可提高其术后90 d时的生活质量。

关键词：脊髓型颈椎病椎管扩大成形术加速康复外科强化康复

Lemierre综合征患者机械通气撤机后继发声门闭合不全的护理

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中华急危重症护理杂志 2024年第1期5卷 47-50页

作者：周飞飞高春华林燕浙江大学医学院附属第一医院护理部杭州市310003

总结1例Lemierre综合征患者机械通气撤机后继发声门闭合不全的护理体会。针对患者撤机难度大,再插管风险高等问题,采取急性期呼吸支持;拔管前风险评估、多学科制订拔管策略、拔管后观察与应急处置;预警评估,平衡出血与血栓,积极控制感染... 详细信息

总结1例Lemierre综合征患者机械通气撤机后继发声门闭合不全的护理体会。针对患者撤机难度大,再插管风险高等问题,采取急性期呼吸支持;拔管前风险评估、多学科制订拔管策略、拔管后观察与应急处置;预警评估,平衡出血与血栓,积极控制感染,预防交叉感染;阶段性康复训练,目标导向营养支持及正性心理支持等措施。经过25 d积极治疗与护理,患者病情好转,转康复医院继续治疗。随访3个月,患者生活恢复正常。

关键词： Lemierre综合征声门闭合不全通气机撤除法危重病护理

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石油化工装置机组设备安装管理研究

装备机械 2024年第1期 90-94页

作者：周飞飞李响中石化上海工程有限公司上海200120 上海市特种设备监督检验技术研究院上海200062

为了提升大型石油化工装置中机组设备的安装质量管控水平,对石油化工装置机组设备安装管理进行研究。针对机组设备一般安装控制体系,从前期准备筹划、现场安装控制、沟通管理三个方面进行分析,结合实际工作提出建议。在前期准备筹划时... 详细信息

为了提升大型石油化工装置中机组设备的安装质量管控水平,对石油化工装置机组设备安装管理进行研究。针对机组设备一般安装控制体系,从前期准备筹划、现场安装控制、沟通管理三个方面进行分析,结合实际工作提出建议。在前期准备筹划时加强图纸预审查,合理编排到货计划,提高开箱共检效果。在现场安装控制时加强基础处理及保护,加强设备就位过程保护,提高找正找平质量和灌浆质量。全程做好沟通管理,保证沟通即时、准确且有效。通过研究,为石油化工装置机组设备安装质量管控水平的提高提供参考。

关键词：石油化工机组设备安装管理

Non-platinum doublets versus single agents in non-small cell lung cancer （NSCLC） patients with elderly age and/or poor performance status： a meta-analysis

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The Chinese-German Journal of Clinical Oncology 2011年第3期10卷 134-139页

作者： Huijuan Qju Fang Wang Guifang Guo feifei zhou Wenzhuo He Liangping Xia State Key Laboratory of Oncology in South China Guangzhou 510060 China VIP Region Sun Yat-sen Universty Cancer Center Guangzhou 510060 China Tumor Center The Foshan First People＇s Hospital Foshan 510060 China

学习的目的是在以前未经治疗的先进非小的房间肺癌症(NSCLC ) 把非铂马甲(马甲组) 的功效和毒性与一个非铂单身者代理人(单个代理人的组) 作比较的目的有老年龄或差的表演地位(PS ) 的病人。PubMed 数据库被屏蔽的方法。随后，为全面幸... 详细信息

学习的目的是在以前未经治疗的先进非小的房间肺癌症(NSCLC ) 把非铂马甲(马甲组) 的功效和毒性与一个非铂单身者代理人(单个代理人的组) 作比较的目的有老年龄或差的表演地位(PS ) 的病人。PubMed 数据库被屏蔽的方法。随后，为全面幸存( OS )的危险比率( HR )和没有前进的幸存( PFS )，为全面反应的相对风险( RR )评价( ORR )并且一个年幸存，并且为毒性的不同类型的机会比率( ORs )用评论经理 5.0 包裹被分享。这研究 1427 个病人包括了的结果在四注册了使随机化的控制试用。分享的 HR 证明马甲组能增加 ORR (P = 0.002 ) 没有异质(P = 0.64 ) ，并且可能改进 OS (P = 0.01 / P = 0.06 ) 与异质(P < 0.001 ) 。在 PFS 没有重要差别(P = 0.16 ) 并且一个年幸存(P = 0.25 ) 在二个治疗组之间。马甲组比单个代理人的组导致了更多的等级 3/4 嗜中性白血球减少症和 thrombocytopenia (P = 0.02 并且 P = 0.000，分别地) 。等级 3/4 贫血症的发生，呕吐，在二个治疗组之间的 mucositis，便秘，腹泻， neurotoxicity，过敏症，和疲劳是不足道的。结论除了嗜中性白血球减少症和 thrombocytopenia，非铂马甲能增加 ORR，和力量没有更多的副作用的增加，与老年龄或差的 PS 为 NSCLC 病人改进 OS；然而，马甲显示出嗜中性白血球减少症和 thrombocytopenia 的增加的率。马甲的增加不能改进 PFS 和一个年幸存。

关键词：非小细胞肺癌 Meta分析双峰单药患者年龄老人状态

垃圾渗滤液污水处理设备的臭氧投加复合抗扰控制

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控制工程 2024年第3期31卷 385-391页

作者：常雨芳胡宇博余文锦周菲菲黄文聪湖北工业大学电气与电子工程学院湖北武汉430068

垃圾渗滤液污水处理设备中的臭氧投加系统具有大时滞、大惯性和多扰动的特点,导致难以实时调整臭氧投加量,从而影响后续设备出水水质。针对以上问题,在水流量比例的控制方面提出一种基于扰动观测器的改进型Smith预估器与滑模控制相结合... 详细信息

垃圾渗滤液污水处理设备中的臭氧投加系统具有大时滞、大惯性和多扰动的特点,导致难以实时调整臭氧投加量,从而影响后续设备出水水质。针对以上问题,在水流量比例的控制方面提出一种基于扰动观测器的改进型Smith预估器与滑模控制相结合的复合抗扰控制。其中,滑模控制为主控制器,扰动观测器用于估计出系统的集总扰动并反馈至前向通道消除扰动的不利影响,以便于Smith预估器更好地进行时滞补偿。仿真和实验结果表明,复合抗扰控制相较于PID控制和自抗扰控制具有更好的控制性能和抑制扰动的能力,能够有效提高垃圾渗滤液污水处理设备的出水水质。

关键词：污水处理系统滑模控制改进型Smith预估器扰动观测器

叙事医学指导下共情护理结合认知行为干预对乳腺癌根治术后患者应对方式、情绪状态的影响

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反射疗法与康复医学 2024年第3期5卷 68-71页

作者：马坤周菲菲杨婷婷滨州医学院附属医院肿瘤科山东滨州256600

目的探讨叙事医学指导下共情护理结合认知行为干预对乳腺癌根治术后患者应对方式、情绪状态的影响.方法选择2022年1月—2023年6月于滨州医学院附属医院行乳腺癌根治术的100例患者为研究对象,按随机数字表法将其分为对照组及观察组,每组5... 详细信息

目的探讨叙事医学指导下共情护理结合认知行为干预对乳腺癌根治术后患者应对方式、情绪状态的影响.方法选择2022年1月—2023年6月于滨州医学院附属医院行乳腺癌根治术的100例患者为研究对象,按随机数字表法将其分为对照组及观察组,每组50例.对照组行常规护理干预,观察组行叙事医学指导下共情护理结合认知行为干预,均持续8周.比较两组患者的情绪状态、应对方式及病耻感.结果干预后,观察组的焦虑自评量表、抑郁自评量表评分分别为(24.26±3.15)分、(25.38±3.24)分,均低于对照组的(32.23±3.53)分,(34.62±3.51)分,组间差异有统计学意义(P<0.05).干预后,观察组的应对方式问卷中消极应对方式评分低于对照组,积极应对方式评分高于对照组,组间差异有统计学意义(P<0.05).干预后,观察组的社会影响量表中各个维度评分均低于对照组,组间差异有统计学意义(P<0.05).结论叙事医学指导下共情护理结合认知行为干预能降低乳腺癌根治术后患者的病耻感,减轻其负面情绪,改善其应对方式.

关键词：乳腺癌根治术叙事医学共情护理认知行为应对方式情绪状态