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Predictive safety control for road vehicles after a tire blowout

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Science China(Information Sciences) 2018年第7期61卷 101-103页

作者： fei WANG Hong CHEN Lulu GUO Yunfeng hu State Key Laboratory of Automotive Simulation and Control Jilin University Department of Control Science and Engineering Jilin University

Since driver error is considered a major cause in over 90%of all road crashes[1],driving assistance systems are widely used to improve driving safety,and are an important research direction in the intelligent vehicle *** the rapid development of sensing,identification and communication technologies,the vehicle can obtain an increasing amount of information in real time,ranging from the vehicle status information to road information

关键词： Predictive safety control for road vehicles after a tire blowout

A novel caged-prenylxanthone from Garcinia bracteata

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Chinese Chemical Letters 2010年第4期21卷 443-445页

作者： Na, Zhi hu, hua Bin Fan, Qing fei Chinese Acad Sci Xishuangbanna Trop Bot Garden Mengla 666303 Peoples R China

A novel caged-prenylxanthone xanthone,neobractatin(1),was isolated from the twig of Garcinia *** structure was elucidated by spectroscopic methods,especially 2D NMR techniques.

关键词： Garcinia bracteata Caged-prenylxanthone Neobractatin

Exact Solutions to the Quantum Rabi-Stark Model Within Tunable Coherent States

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Communications in Theoretical Physics 2019年第5期71卷 623-628页

作者： You-fei Xie Qing-hu Chen Department of Physics Zhejiang UniversityHangzhou310027China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing210093China

The quantum Rabi-Stark model, where the linear dipole coupling and the nonlinear Stark-like coupling is present on an equal footing, is studied within the tunable extended coherent states. The eigenvalues and eigenstates are therefore obtained exactly. Surprisingly, the entanglement entropy in the ground-state is found to jump suddenly with the coupling strength. The first-order quantum phase transition can be detected by level crossing of the ground state and the first excited state, which is however lacking in the original linear quantum Rabi model. Performing the first-order approximation in the present theory, we can derive closed-form analytical results for the ground-state. Interestingly, it agrees well with the exact solutions up to the ultra-strong coupling regime in a wide range of model parameters. The spectral collapses when the absolute value of the nonlinear coupling strength approaches to twice the cavity frequency is observed with the help of new solutions in the limits.

关键词： extended coherent states exact eigenvalues first-order phase transitions spectral collapse

The roles of ebolavirus glycoproteins in viral pathogenesis

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Virologica Sinica 2017年第1期32卷 3-15页

作者： Yun-Jia Ning fei Deng Zhihong hu hualin Wang State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences

Ebolaviruses are highly dangerous pathogens exhibiting extreme virulence in humans and nonhuman primates. The majority of ebolavirus species, most notably Zaire ebolavirus, can cause Ebola virus disease(EVD), formerly known as Ebola hemorrhagic fever, in humans. EVD is associated with case-fatality rates as high as 90%, and there is currently no specific treatment or licensed vaccine available against EVD. Understanding the molecular biology and pathogenesis of ebolaviruses is important for the development of antiviral therapeutics. Ebolavirus encodes several forms of glycoproteins(GPs), which have some interesting characteristics, including the transcriptional editing coding strategy and extensive O-glycosylation modification, clustered in the mucin-like domain of GP1, full-length GP(GP_(1,2)), and shed GP. In addition to the canonical role of the spike protein, GP_(1,2), in viral entry, ebolavirus GPs appear to have multiple additional functions,likely contributing to the complex pathogenesis of the virus. Here, we review the roles of ebolavirus GPs in viral pathogenesis.

关键词： ebolavirus glycoprotein (GP) mucin-like domain (MLD) cytotoxicity immune evasion inflammation pathogenesis

Automatic character detection and segmentation in natural scene images

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第1期8卷 63-71页

作者： Zhu Kai-hua QI fei-hu JIANG Ren-jie XU Li Department of Computer Science and Technology Shanghai Jiao Tong University Shanghai 200030 China

We present a robust connected-component (CC) based method for automatic detection and segmentation of text in real-scene images. This technique can be applied in robot vision, sign recognition, meeting processing and video indexing. First, a Non-Linear Niblack method (NLNiblack) is proposed to decompose the image into candidate CCs. Then, all these CCs are fed into a cascade of classifiers trained by Adaboost algorithm. Each classifier in the cascade responds to one feature of the CC. Proposed here are 12 novel features which are insensitive to noise, scale, text orientation and text language. The classifier cascade allows non-text CCs of the image to be rapidly discarded while more computation is spent on promising text-like CCs. The CCs passing through the cascade are considered as text components and are used to form the segmentation result. A prototype system was built, with experimental results proving the effectiveness and efficiency of the proposed method.

关键词： Text detection and segmentation Adaboost NLNiblack decomposition method Attentional cascade

Targeting voltage-gated sodium channels for treatment for chronic visceral pain

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World Journal of Gastroenterology 2011年第19期17卷 2357-2364页

作者： fei-hu Qi You-Lang Zhou Guang-Yin Xu Jiangsu Key Laboratory of Neuroregeneration Nantong University Nantong22600 I Jian~su Province China Institute of Neuroscience Key laboratory of Pain Research and Therapy Soochow University Suzhou 215123Jiangsu Province China Division of Gastroenterology Department of Internal Medicine University of Texas Medical Branch Galve-ston TX 77555-0655 United States

Voltage-gated sodium channels (VGSCs) play a fundamental role in controlling cellular excitability,and their abnormal activity is related to several pathological processes,including cardiac arrhythmias,epilepsy,neurodegenerative diseases,spasticity and chronic *** particular,chronic visceral pain,the central symptom of functional gastrointestinal disorders such as irritable bowel syndrome,is a serious clinical problem that affects a high percentage of the world *** spite of intense research efforts and after the dedicated decade of pain control and research,there are not many options to treat chronic pain ***,there is a wealth of evidence emerging to give hope that a more refined approach may be *** using electronic databases,available data on structural and functional properties of VGSCs in chronic pain,particularly functional gastrointestinal hypersensitivity,were *** summarize the involvement and molecular bases of action of VGSCs in the pathophysiology of several organic and functionalgastrointestinal *** also describe the efficacy of VGSC blockers in the treatment of these neurological diseases,and outline future developments that may extend the therapeutic use of compounds that target ***,clinical and experimental data indicate that isoform-specific blockers of these channels or targeting of their modulators may provide effective and novel approaches for visceral pain therapy.

关键词： Voltage-gated sodium channel Dorsal root ganglion Visceral pain Functional gastrointestinal disorders Treatment

Self-supported hard carbon anode from fungus-treated basswood towards sodium-ion batteries

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Nano Research 2023年第3期16卷 3832-3838页

作者： Ping Wang Yu-Jie Guo Wan-Ping Chen hui Duan huan Ye hu-Rong Yao Ya-Xia Yin fei-fei Cao Institute of Advanced Materials Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of EducationCollege of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang 330022China College of Science Huazhong Agricultural UniversityWuhan 430070China Institute of Chemistry Chinese Academy of SciencesBeijing 100190China Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage Fuzhou 350117China

Hard carbon derived from biomass is regarded as a promising anode material for sodium-ion batteries(SIBs)because of its low operating potential,high capacity,resource availability,and low ***,scientific and technological challenges still exist to prepare hard carbon with a high initial Coulombic efficiency(ICE),an excellent rate capability,and good cycling *** this work,we report a self-supported hard carbon electrode from fungus-pretreated basswood with an improved graphitization degree and a low *** with the hard carbon derived from basswood,the hard carbon electrode from fungus-pretreated basswood has an improved rate capability of 242.3 mAh·g^(−1)at 200 mA·g^(−1)and cycling stability with 93.9%of its capacity retention after 200 cycles at 40 mA·g^(−1),as well as the increased ICE from 84.3%to 88.2%.Additionally,ex-situ X-ray diffraction indicates that Na+adsorption caused the sloping capacity,whereas Na+intercalation between interlayer spacing corresponded to the low potential plateau *** work provides a new perspective for the preparation of high-performance hard carbon and gains the in-depth understanding of Na storage mechanism.

关键词： sodium-ion battery anode hard carbon fungus-pretreated basswood

Insight into characteristics and sources of PM2.5 in the Beijing–Tianjin–Hebei region, China

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National Science Review 2015年第3期2卷 257-258页

作者： Min hu Song Guo Jian-fei Peng Zhi-jun Wu College of Environmental Sciences and Engineering Peking University Departments of Atmospheric Sciences and Chemistry Texas A&M University

As the world’s second-largest economy,China has experienced severe air pollution with unprecedentedly high levels of PM2.5,*** mater smaller than 2.5μm in *** Ministry of Environmental Protection of China released an air pollution monitoring report for the year 2013 for the 74 largest cities of *** Beijing–Tianjin–Hebei(BTH)region was classiied as having the poorest air *** annual

关键词： Insight into characteristics and sources of PM Hebei region China Tianjin

Supercritical gasification for the treatment of o-cresol wastewater

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Journal of Environmental Sciences 2006年第4期18卷 644-649页

作者： WEI Chao-hai hu Cheng-sheng WU Chao-fei YAN Bo College of Environmental Science and Technology South China University of Technology Guangzhou 510640 China

The supercritical water gasification of phenolic wastewater without oxidant was performed to degrade pollutants and produce hydrogen-enriched gases. The simulated o-cresol wastewater was gasified at 440-650℃ and 27.6 MPa in a continuous Inconel 625 reactor with the residence time of 0.42-1.25 min. The influence of the reaction temperature, residence time, pressure, catalyst, oxidant and the pollutant concentration on the gasification efficiency was investigated. Higher temperature and longer residence time enhanced the o-cresol gasification. The TOC removal rate and hydrogen gasification rate were 90.6% and 194.6%, respectively, at the temperature of 650℃ and the residence time of 0.83 min. The product gas was mainly composed of H2, CO2, CFL and CO, among which the total molar percentage of H2 and CFL was higher than 50%. The gasification efficiency decreased with the pollutant concentration increasing. Both the catalyst and oxidant could accelerate the hydrocarbon gasification at a lower reaction temperature, in which the catalyst promoted H2 production and the oxidant enhanced CO2 generation. The intermediates of liquid effluents were analyzed and phenol was found to be the main composition. The results indicate that the supercritical gasification is a promising way for the treatment of hazardous organic wastewater.

关键词： supercritical water gasification o-cresol hydrogen-enriched gas wastewater treatment