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基于多元劣化失效的综合传动剩余寿命预测

华中科技大学学报（自然科学版） 2018年第8期46卷 28-33页

作者：闫书法马彪郑长松北京理工大学机械与车辆学院

为实现多元劣化失效模式下的综合传动装置剩余寿命预测,并减少不同劣化失效模式间的相关关系不明确性和劣化监测数据的方差时变性对预测准确性的影响,达到对装置剩余寿命的准确预测与视情维护策略的合理制定的目的,提出了一种基于多元... 详细信息

为实现多元劣化失效模式下的综合传动装置剩余寿命预测,并减少不同劣化失效模式间的相关关系不明确性和劣化监测数据的方差时变性对预测准确性的影响,达到对装置剩余寿命的准确预测与视情维护策略的合理制定的目的,提出了一种基于多元劣化失效的综合传动装置劣化建模与剩余寿命预测方法.定义了基于随机过程首中时间的装置剩余寿命的概念,实现了多元劣化失效模式相关性未知情况下的装置整机剩余寿命预测.实验研究结果表明：该方法得到的装置剩余寿命预测结果具有较小的相对误差,与综合传动装置的真实剩余寿命更为接近,能够客观描述装置的性能劣化规律,有利于深入了解综合传动装置的失效机理和规律,为综合传动装置视情维护策略的合理制定提供了基础.

关键词：综合传动装置多元劣化模型剩余寿命 Copula函数视情维修

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2019年浙江省检验医学学术大会

作者： Qianda Zou shufa Zheng Yu Chen Department of Clinical Laboratory The First Affiliated HospitalZhejiang University School of MedicineZhejiang University Key Laboratory of Clinical In Vitro Diagnostic Techniques of Zhejiang Province

Background :Clinical characteristics of patients with severe influenza A-associated pneumonia as well as the impact of different NAI treatment on them remains *** :A retrospective, multicenter, observational study was conducted in Zhejiang, China through August 2017 to May 2018. Patients(>14 y) hospitalized with laboratory-confirmed influenza A and developed severe pneumonia(n=202) were enrolled, while those developed mild-to-moderate pneumonia(n=202) were randomly chosen for comparison. Clinical data were collected. Factors related to pneumonia severity as well as the effects of NAI treatment were *** :Hospitalization of influenza A-associated severe pneumonia peaked between January to February in 2018. Male gender(OR=1.913;95% CI [1.158-3.162];P=0.011), chronic pulmonary disease(OR=2.765;95% CI [1.541-4.961];P=0.001), diabetes mellitus(OR=1.994;95% CI [1.097-3.625];P=0.024) and immunosuppression(OR=17.727;95% CI [2.270-138.405];P=0.006) were the independent factors related to influenza A pneumonia severity. Patients in severe pneumonia group treated with double dose(300 mg per day) oseltamivir had better survival rate as compared to single dose(150 mg per day)(P=0.017). Comparison of different dose peramivir(300 mg once daily vs. 600 mg once daily) and the combination therapy(oseltamivirperamivir vs. monotherapy) showed no differences in survival(P=0.356 and P=0.514, respectively).Conclusions :Male gender, chronic pulmonary disease, diabetes mellitus and immunosuppression were independently related to influenza A pneumonia severity. Double dose oseltamivir treatment was associated with improved survival in influenza A-associated severe pneumonia.

关键词： influenza severe pneumonia double dose oseltamivir

Experimental Research on the Friction and Wear Properties of Ni-based Composite Coating prepared by Laser Cladding

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Experimental Research on the Friction and Wear Properties of...

中国材料大会2012

作者： shufa Chen Chenglong Feng Jin Yang Jinsong Chen College of Mechanical Engineering Huaihai Institute of Technology

ISBN: (纸本)9783037856086

In this study, the dry sliding wear behavior of Ni-based self-lubricating wear-resistant coating was characterized under various loads at 300 ℃. Morphologies and compositions of the worn surface were analyzed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The experimental results showed that with the increase of load, both the frictional coefficient and wear rate decreased firstly, then slightly increased. A small amount of debris dispersed on the worn surface of the coating under low load (2 N). Since the effects of oxide layer and lubricant particles spreading onto the worn surface, the coating exhibited superior friction, and improved the wear properties under moderate load (5 N). As the load further increased, till up to 10N, the worn surface started to appear some shallow grooves and craters. This was contributed to the dispersion of carbides and lubricant particles.

关键词： Self-lubricating wear-resistant coating Variation of load Friction and wear Wear mechanism analysis

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试论马克思主义发展的实现环节

理论视野 2021年第5期255卷 19-23页

作者：梁树发中国人民大学马克思主义学院

马克思主义发展研究的深化,在于使马克思主义发展一般条件的研究进到发展的实现研究,发现使发展得以实现的环节。这个环节是矛盾、形势、问题和机制。矛盾即社会基本矛盾、阶级矛盾和思想体系之间的矛盾;形势是社会矛盾运动的结果,它既... 详细信息

马克思主义发展研究的深化,在于使马克思主义发展一般条件的研究进到发展的实现研究,发现使发展得以实现的环节。这个环节是矛盾、形势、问题和机制。矛盾即社会基本矛盾、阶级矛盾和思想体系之间的矛盾;形势是社会矛盾运动的结果,它既是客观的,又包含主观因素;问题是时代的口号,马克思主义哲学是实践哲学,面向时代问题是它的内在要求;机制是条件实现的关键环节,它由实践机制、创新思维、评价机制、接受机制构成。

关键词：马克思主义发展实现环节

Serological,Virulence,Antimicrobial Susceptibility and Molecular Characteristics of Clinical Vibrio parahaemolyticus Strains Circulating in Southeastern China:2009 to 2013

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Serological,Virulence,Antimicrobial Susceptibility and Molec...

2015浙江省检验医学学术年会

作者：陈晓 Fei Yu shufa Zheng Ruonan Wang Yu Chen State Key Laboratory for Diagnosis and Treatment of Infectious Diseases Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseasesthe First Affiliated HospitalCollege of MedicineZhejiang University

Objective:Vibrio parahaemolyticus,which is naturally present in coastal waters,has been shown to be responsible for the majority of bacterial *** this study,we want to learn the prevalence and the molecular characteristic of Vibrio parahaemolyticus in Southeastern ***:Consecutive faecal specimens from outpatients with acute diarrhoea in nine sentinel hospitals in southeastern China were collected from July 2009 to June *** and viral pathogens were detected by culture and RT-PCR,*** O/K serotypes,virulence-associated genes,sequence types(STs)and antimicrobial susceptibility profiles of the *** isolates were ***:A total of 563(8.1%) *** strains were isolated from 6,951 specimens;this pathogen was the second most prevalent bacterial pathogen,after diarrheagenic Escherichia coli(16.4%).In the 89.0%(501/563) ***-positive cases,*** was reported as the sole pathogen *** 501 strains spanned 6 0 and 14 K serogroups,including 03(67.9%),04 and01 as the top three *** the typeable serotypes,03:K6 was the most common(65.0%),followed by 04:K8,04:K68 and 01:*** hemolysin gene tdh was observed in 93.0%isolates,while the trh gene was detected in only 1.0%strains.A total of 62.1%tested isolates were classified as pandemic strains,and 93.6%isolates were classified as pathogenic *** categorized 501 strains into 16 STs,of which 5 were *** distribution of these STs was concentrated,and the most frequently observed STs in this study were ST3,ST88,ST120 and ST8.A largest proportion of *** strains was resistant to ampicillin,followed by ***,more than 95%of the isolates were sensitive to other antibacterials including fluroquinoloncs,carbapenems,three and four generation cephalosporin,β-lactamase inhibitor combinations,aminoglycosides,tetracyclines and ***:Pandemi

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试论马克思主义理论学科形成的科学基础

思想理论教育导刊 2010年第3期 21-28页

作者：梁树发黄刚中国人民大学马克思主义学院北京100872

马克思主义理论学科的形成有其科学基础。马克思主义的科学性是马克思主义理论学科形成的首要科学基础。马克思主义的整体性是马克思主义理论学科形成的直接的科学基础。马克思主义发展和马克思主义理论研究所达到的实际水平,为马克思... 详细信息

马克思主义理论学科的形成有其科学基础。马克思主义的科学性是马克思主义理论学科形成的首要科学基础。马克思主义的整体性是马克思主义理论学科形成的直接的科学基础。马克思主义发展和马克思主义理论研究所达到的实际水平,为马克思主义理论学科的形成提供了理论准备和必要条件。

关键词：马克思主义理论学科学科形成科学基础

多孔微弧氧化膜层的热传导和激光重熔行为研究

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稀有金属材料与工程 2014年第6期43卷 1432-1436页

作者：狄士春喻杰王岩孙术发哈尔滨工业大学黑龙江哈尔滨150001 东北林业大学黑龙江哈尔滨150040

基于6082铝合金的微弧氧化(MAO)膜层微观形貌,归纳了3类组织缺陷,以此探讨了MAO膜层的激光能量吸收过程、热传导性能和激光重熔行为。研究表明:激光辐射后,在膜层表面的微孔和微裂纹处容易出现等离子体的光能吸收效应,产生高温热源点,... 详细信息

基于6082铝合金的微弧氧化(MAO)膜层微观形貌,归纳了3类组织缺陷,以此探讨了MAO膜层的激光能量吸收过程、热传导性能和激光重熔行为。研究表明:激光辐射后,在膜层表面的微孔和微裂纹处容易出现等离子体的光能吸收效应,产生高温热源点,形成微小熔池,由于MAO膜层的各向异性热传导和表面光滑微区的热能积累,初期熔池横向生长速度快,直至熔池汇聚成连续的表面重熔区,膜层的纵向重熔速度加快,最终冷却形成重熔层。SEM和XRD检测证实激光重熔改善了MAO膜层的多孔疏松组织,提高了α-Al2O3相的含量。

关键词：铝合金微弧氧化激光重熔热传导熔池

Galectin-1 ameliorates influenza A virus induced lung apoptosis in mice

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Galectin-1 ameliorates influenza A virus induced lung apopto...

2019年浙江省检验医学学术大会

作者： Jiaqi Bao Xiaochen Wang Qianda Zou shufa Zheng Yu Chen The First Affiliated Hospital Zhejiang University School of Medicine

Background: Galectin-1, a ubiquitously expressed protein, has been reported to participate in various viral infections and has an important role in the regulation of immune homeostasis and cell apoptosis. However, the influence of galectin-1 on the H1 N1 pdm09 infection and associated lung apoptosis has not been established.

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改革开放30年来我国学者关于马克思主义认识的发展--从“西方马克思主义”与马克思主义关系的认识谈起

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学术研究 2009年第4期 5-11页

作者：梁树发黄刚中国人民大学马克思主义学院

改革开放30年来,我国学者对"西方马克思主义"的认识经历了从基本否定到基本肯定再到承认其是马克思主义发展的新形态这三个阶段。我们必须从马克思主义的理论与实践、坚持与发展的结合上提出和回答"西方马克思主义"与马克思主义的关系... 详细信息

改革开放30年来,我国学者对"西方马克思主义"的认识经历了从基本否定到基本肯定再到承认其是马克思主义发展的新形态这三个阶段。我们必须从马克思主义的理论与实践、坚持与发展的结合上提出和回答"西方马克思主义"与马克思主义的关系问题。"西方马克思主义"及当代国外马克思主义研究的知识准备包括对马克思主义基本理论和马克思主义发展史的知识、西方文化知识以及对"西方马克思主义"和国外马克思主义的全面了解。

关键词：改革开放30年西方马克思主义马克思主义认识