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车用质子交换膜燃料电池空气供应系统自适应解耦控制方法研究

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汽车工程 2020年第2期42卷 172-177页

作者：周苏胡哲谢非同济大学汽车学院上海201804 上海重塑能源科技有限公司上海201804

当空压机性能发生衰减或静态特性发生变化时,采用前馈补偿解耦闭环控制算法对车用质子交换膜燃料电池空气供应系统基于该算法进行控制的品质会变差。为此本文在前馈补偿解耦闭环控制的基础上增加了自适应查表算法,以期提高空压机转速调... 详细信息

当空压机性能发生衰减或静态特性发生变化时,采用前馈补偿解耦闭环控制算法对车用质子交换膜燃料电池空气供应系统基于该算法进行控制的品质会变差。为此本文在前馈补偿解耦闭环控制的基础上增加了自适应查表算法,以期提高空压机转速调节能力。硬件在环仿真结果表明,改进后的自适应解耦控制算法可在线和自适应地更新空压机转速标定表,从而有效消除PI调节器积分饱和现象,使空压机响应速度更快,入堆空气流量的控制效果更好。

关键词：质子交换膜燃料电池空气供应系统前馈补偿解耦自适应查表算法硬件在环仿真

New fossil seeds of Eurya （Theaceae） from East Asia and their paleobiogeographic implications

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Plant Diversity 2016年第3期38卷 125-132页

作者： Hai Zhu Yong-Jiang Huang Tao su zhe-Kun Zhou Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical Garden Chinese Academy ofSdences Mengla 666303 China University of Chinese Academy of Sdences Beijing 100049 China State Key Laboratory of Paleobiology and Stratigraphy Nanjing Institute of Geology and Paleontology Chinese Academy of Sciences Nanjing 210008 China

Eurya has an excellent fossil record in Europe, but it has only a few fossil occurrences in East Asia though this vast area houses the highest modern diversity of the genus. In this study, three-dimensionally preserved fossil seeds of Eurya stigrnosa （Ludwig） Mai from the late Pliocene of northwestern Yunnan, southwestern China are described. The seeds are compressed and flattened, slightly campylotropous, and nearly circular to slightly angular in shape. The surface of the seeds is sculptured by a distinctive foveolate pattern, consisting of funnel-shaped and finely pitted cells. Each seed valve contains a reniform or horseshoe-shaped embryo cavity, a characteristic condyle structure and an internal raphe. These fossil seeds represent one of the few fossil records of Eurya in East Asia. This new finding therefore largely extends the distributional ranges of Eurya during Neogene. Fossil records summarized here show that Eurya persisted in Europe until the early Pleistocene, but disappeared thereafter. The genus might have first appeared in East Asia no later than the late Oligocene, and dispersed widely in regions such as Japan, Nepal, and southwestern China.

关键词： Seed fossil Eurya Late Pliocene Nanbanbang Northwest Yunnan China

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应用多级维纳滤波的OCT图像除噪方法

光学精密工程 2008年第4期16卷 740-745页

作者：柯丽杜强苏哲沈阳工业大学生物医学工程系辽宁沈阳110023 长春理工大学应用理学院吉林长春130022

设计了基于维纳滤波和对比度增强的OCT图像处理方法。对OCT图像的噪声进行了分析，通过多尺度维纳滤波器对图像进行滤波处理来去除噪声干扰，然后根据区域特性采用对比度增强方法提高图像对比度。实验结果表明：经该方法处理后图像的背... 详细信息

设计了基于维纳滤波和对比度增强的OCT图像处理方法。对OCT图像的噪声进行了分析，通过多尺度维纳滤波器对图像进行滤波处理来去除噪声干扰，然后根据区域特性采用对比度增强方法提高图像对比度。实验结果表明：经该方法处理后图像的背景方差（BV）较原始图像降低了2～6倍，细节方差和背景方差之比（DV／BV）提高了2～5倍。该方法不仅有效地去除了OCT图像的噪声，而且视觉效果良好，是一种有效的图像后处理方法。

关键词：光学相干层析成像多级维纳滤波图像除噪对比度增强

基于K均值和支持向量机的燃料电池在线自适应故障诊断

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同济大学学报（自然科学版） 2019年第2期47卷 255-260页

作者：周苏胡哲文泽军同济大学汽车学院上海201804 同济大学中德学院上海201804

基于K均值(K-means)和支持向量机(support vector machine, SVM)算法,提出了一种车用燃料电池系统(fuel cell system, FCS)在线自适应故障诊断方法.该方法通过不断获取系统最新单体电压,采用K-means算法改进传统的静态SVM分类器模型,对... 详细信息

基于K均值(K-means)和支持向量机(support vector machine, SVM)算法,提出了一种车用燃料电池系统(fuel cell system, FCS)在线自适应故障诊断方法.该方法通过不断获取系统最新单体电压,采用K-means算法改进传统的静态SVM分类器模型,对实时获取的信息进行聚类,实现分类器的在线自适应调节.采用已发表文献中的实验数据进行了相关的验证分析,结果表明,提出的方法能有效地在线调节故障分类器,实现FCS系统特性发生改变后的故障检测.

关键词：车用燃料电池故障诊断在线自适应支持向量机 K均值聚类

The epigallocatechin gallate derivative Y_6 reverses drug resistance mediated by the ABCB1 transporter both in vitro and in vivo

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Acta Pharmaceutica Sinica B 2019年第2期9卷 316-323页

作者： Yan Wen Ruiqiang Zhao Pranav Gupta Yingfang Fan Yunkai Zhang zhenguang Huang Xiaohui Li Yuangang su Lijuan Liao Yu-An Xie Donghua Yang zhe-Sheng Chen Gang Liang Department of Pharmaceutical Sciences College of Pharmacy and Health Sciences St.John's University Department of Pharmacy the First Affiliated Hospital of Guangxi Medical University Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research Guangxi Medical University Department of Biochemistry and Molecular Biology School of Preclinical Medicine Guangxi Medical University Department of Hepatobiliary surgery Zhujiang Hospital Southern Medical University Department of Biotechnology School of Preclinical Medicine Guangxi Medical University The Affiliated Tumor Hospital of Guangxi Medical University College of Pharmacy Guangxi Medical University

Previously, we reported that Y_6, a new epigallocatechin gallate derivative, is efficacious in reversing doxorubicin(DOX)–mediated resistance in hepatocellular carcinoma BEL-7404/DOX cells. In this study, we evaluated the efficacy of Y_6 in reversing drug resistance both in vitro and in vivo by determining its effect on the adenosine triphosphate-binding cassette protein B1 transporter(ABCB1 or P-glycoprotein, P-gp). Our results showed that Y_6 significantly sensitized cells overexpressing the ABCB1 transporter to anticancer drugs that are ABCB1 substrates. Y_6 significantly stimulated the adenosine triphosphatase activity of ABCB1. Furthermore, Y_6 exhibited a higher docking score as compared with epigallocatechin gallate inside the transmembrane domain of ABCB1. In addition, in the nude mousetumor xenograft model, Y_6(110 mg/kg, intragastric administration), in combination with doxorubicin(2 mg/kg, intraperitoneal injection), significantly inhibited the growth of BEL-7404/DOX cell xenograft tumors, compared to equivalent epigallocatechin gallate. In conclusion, Y_6 significantly reversed ABCB1-mediated multidrug resistance and its mechanisms of action may result from its competitive inhibition of the ABCB1 drug efflux function.

关键词： Epigallocatechin gallate(EGCG) 5,3’,4’,3″,4″,5″-6-O-ethylEGCG(Y6) Drug resistance Resistance reversal ABCB1 P-gp

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中国企业如何面对美国新的贸易摩擦

扬州大学学报（人文社会科学版） 2011年第4期15卷 45-51页

作者：苏喆扬州大学法学院江苏扬州225009

中美经济虽然具有很大的互补性,但彼此之间新的贸易摩擦难以避免,表层原因是两国之间贸易的不平衡,深层原因是中国的崛起构成了对美国的竞争,特别是新技术领域内的竞争。美国发动对华贸易摩擦时不仅善于利用国际法规则,而且具有国内法根... 详细信息

中美经济虽然具有很大的互补性,但彼此之间新的贸易摩擦难以避免,表层原因是两国之间贸易的不平衡,深层原因是中国的崛起构成了对美国的竞争,特别是新技术领域内的竞争。美国发动对华贸易摩擦时不仅善于利用国际法规则,而且具有国内法根据,中国企业往往难以招架。我国外向型出口企业应根据美国近期对华贸易摩擦的特点,采取合法应对措施,绕开摩擦,把自己的产业做大做强。

关键词：中美贸易摩擦美国337调查高新技术产业知识产权保护

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非线性时变系统的自耦PID控制方法

控制理论与应用 2022年第2期39卷 299-306页

作者：苏杰曾喆昭长沙理工大学电气与信息工程学院湖南长沙410076

针对一类非线性时变系统的控制问题,使用了一种基于自耦PID的控制理论方法.该方法首先将时变不确定、模型不确定定义为一个扩张状态,并将非线性时变系统映射为未知线性系统;然后使用自耦PID控制方法构造了一个闭环系统;最后在复频域分... 详细信息

针对一类非线性时变系统的控制问题,使用了一种基于自耦PID的控制理论方法.该方法首先将时变不确定、模型不确定定义为一个扩张状态,并将非线性时变系统映射为未知线性系统;然后使用自耦PID控制方法构造了一个闭环系统;最后在复频域分析了闭环系统的鲁棒稳定性和抗扰动鲁棒性.理论分析与仿真结果都表明了本文控制方法具有良好的动态品质和稳态性能,在未知复杂系统控制领域具有广泛的应用前景.

关键词：非线性时变系统自耦PID控制自适应速度因子鲁棒稳定性

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论“人肉搜索”立法的价值取向

河北法学 2012年第2期30卷 26-32页

作者：苏喆扬州大学法学院江苏扬州225009

"人肉搜索"是21世纪的新生事物,人们借助网络通过沟通和交流来查找与发布信息,网民之间相互帮助,探寻事实真相,必要时形成强大的社会舆论,支持与弘扬真善美,揭露和鞭挞假丑恶。这是互助与正义等伦理道德观念在网络时代的必然实践,不是... 详细信息

"人肉搜索"是21世纪的新生事物,人们借助网络通过沟通和交流来查找与发布信息,网民之间相互帮助,探寻事实真相,必要时形成强大的社会舆论,支持与弘扬真善美,揭露和鞭挞假丑恶。这是互助与正义等伦理道德观念在网络时代的必然实践,不是任何力量所能阻止的。近年来的实践效果表明,其正面的社会作用和伦理价值远大于负面的因素和可能出现的不良影响。要充分相信广大网民整体上的道德素质和自律能力。如果对"人肉搜索"立法,就要有利于这一伟大实践的进行,并对其加以科学引导和合理规范,特别是强化网络服务提供者的责任,而不是限制这一实践的开展。

关键词： “人肉搜索” 伦理实践立法依据价值取向

Thermal pyrolysis conversion of methane to hydrogen(H_(2)):A review on process parameters,reaction kinetics and techno-economic analysis

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Chinese Chemical Letters 2024年第8期35卷 62-73页

作者： Yi Herng Chan zhe Phak Chan Serene Sow Mun Lock Chung Loong Yiin Shin Ying Foong Mee Kee Wong Muhammad Anwar Ishak Ven Chian Quek Shengbo Ge su Shiung Lam PETRONAS Research Sdn.Bhd.(PRSB) Kawasan Institusi BangiLot 3288&3289Off Jalan Ayer ItamKajang 43000Malaysia PETRONAS Carbon Capture&Storage(CCS)Enterprise PETRONAS Twin TowersKuala Lumpur City CentreKuala Lumpur 50088Malaysia CO_(2)Research Center(CO2RES) Department of Chemical EngineeringUniversiti Teknologi PETRONASSeri Iskandar 32610Malaysia Department of Chemical Engineering and Energy sustainability Faculty of EngineeringUniversiti Malaysia Sarawak(UNIMAS)Kota Samarahan 94300Malaysia Institute of sustainable and Renewable Energy(IsuRE) Universiti Malaysia Sarawak(UNIMAS)Kota Samarahan 94300Malaysia Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)Universiti Malaysia TerengganuKuala Nerus 21030Malaysia Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Center for Global Health Research(CGHR) Saveetha Medical CollegeSaveetha Institute of Medical and Technical Sciences(SIMATS)Saveetha UniversityChennai 602105India

Hydrogen(H_(2))is a promising renewable energy which finds wide applications as the world gears toward low-carbon ***,current H_(2) production via steam methane reforming of natural gas or gasification of coal are laden with high CO_(2) ***,methane(CH_(4))pyrolysis has emerged as a potential technology to generate low-carbon H_(2) and solid *** this review,the current state-of-art and recent progress of H_(2) production from CH_(4) pyrolysis are reviewed in *** such as funda-mental mechanism and chemistry involved,effect of process parameters on the conversion efficiency and reaction kinetics for various reaction media and catalysts are elucidated and critically ***-ature,among other factors,plays the most critical influence on the methane pyrolysis *** metal/salt could lower the operating temperature of methane pyrolysis tosually operates in the regime of>1000℃.Based on the reaction kinetics,metal-based cata-lysts were more efficient in lowering the activation energy of the reaction to 29.5-88 kJ/mol from that of uncatalyzed reaction(147-420.7 kJ/mol).Besides,the current techno-economic performance of the pro-cess reveals that the levelized cost of H_(2) is directly influenced by the sales price of carbon(by-product)generated,which could offset the overall ***,the main challenges of reactor design for efficient product separation and retrieval,as well as catalyst deactivation/poisoning need to be debottlenecked.

关键词： Pyrolysis Methane Hydrogen Reaction kinetics Techno-economic analysis