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| 1 | Anomaly Detection of Industrial Control Systems Based on Transfer Learning显示文摘Industrial Control Systems(ICSs)are the lifeline of a country.Therefore,the anomaly detection of ICS traffic is an important endeavor.This paper proposes a model based on a deep residual Convolution Neural Network(CNN)to prevent gradient explosion or gradient disappearance and guarantee accuracy.The developed methodology addresses two limitations:most traditional machine learning methods can only detect known network attacks and deep learning algorithms require a long time to train.The utilization of transfer learning under the modification of the existing residual CNN structure guarantees the detection of unknown attacks.One-dimensional ICS flow data are converted into two-dimensional grayscale images to take full advantage of the features of CNN.Results show that the proposed method achieves a high score and solves the time problem associated with deep learning model training.The model can give reliable predictions for unknown or differently distributed abnormal data through short-term training.Thus,the proposed model ensures the safety of ICSs and verifies the feasibility of transfer learning for ICS anomaly detection. | Weiping Wang Zhaorong Wang Zhanfan Zhou Haixia Deng Weiliang Zhao Chunyang Wang Yongzhen Guo | 2021 | Tsinghua Science and Technology2021，26，6： | 11 |
| 2 | Effects of Double Harvesting on Heavy Metal Uptake by Six Forage Species and the Potential for Phytoextraction in Field显示文摘The pollution of soils by heavy metals has dramatically increased in recent decades. Phytoextraction is a technology that extracts elements from polluted soils using hyperaccumulator plants. The selection of appropriate plant materials is an important factor for successful phytoextraction in field. A field study was conducted to compare the efficiency of six high-biomass forage species in their phytoextraction of heavy metals(Cd, Pb, and Zn) from contaminated soil under two harvesting strategies(double harvesting or single harvesting). Among the tested plants, amaranth accumulated the greatest amounts of Cd and Zn, whereas Rumex K^(-1) had the highest amount of Pb in the shoot under both double and single harvesting. Furthermore, double harvesting significantly increased the shoot biomass of amaranth, sweet sorghum and sudangrass and resulted in higher heavy metal contents in the shoot. Under double harvesting, the total amounts of extracted Cd, Pb and Zn(i.e., in the first plus second crops) for amaranth were 945, 2 650 and 12 400 g ha^(-1), respectively, the highest recorded among the six plant species. The present results indicate that amaranth has great potential for the phytoextraction of Cd from contaminated soils. In addition, the double harvesting method is likely to increase phytoextraction efficiency in practice. | LI Ningyu GUO Bin LI Hua FU Qinglin FENG Renwei DING Yongzhen | 2016 | Pedosphere2016，26，5： | 8 |
| 3 | Characterization of the dissolved organic matter in sewage effluent of sequence batch reactor: the impact of carbon source显示文摘Dissolved organic matter (DOM) transforma- tion in sequence batch reactor (SBR) fed with carbon sources of different biodegradability was investigated. During the biologic degradation process, the low mole- cular weight (MW) fraction (〈 1 kDa) gradually decreased, while the refractory compounds with higher aromaticity were aggregated. Size exclusion chromatogra- phy (SEC) and fluorescence of excitation emission matrices (EEM) demonstrated that more biopolymers (polysaccharides or proteins) and humic-like substances were presented in the extracellular polymeric substance (EPS) extracted from the SBR fed with sodium acetate or glucose, while the EPS from SBR fed with slowly biodegradable dissolved organic carbon (DOC) substrate- starch had relatively less biopolymers. Comparing the EfOM in sewage effluent of three SBRs, the effluent from SBR fed with starch is more aromatic. Organic carbon with MW 〉 1 kDa as well as the hydrophobic fraction in DOM gradually increased with the carbon sources changing from sodium acetate to glucose and starch. The DOC fractiona- tion and the EEM all demonstrated that EfOM from the effluent of the SBR fed with starch contained more fulvic acid-like substances comparing with the SBR fed with sodium acetate and glucose. | Jin GUO Feng SHENG Jianhua GUO Xiong YANG Mintao MA Yongzhen PENG | 2012 | Frontiers of Environmental Science & Engineering2012，6，2： | 6 |
| 4 | Community structures and population dynamics of “Candidatus Accumulibacter” in activated sludges of wastewater treatment plants using ppk1 as phylogenetic marker显示文摘Candidatus Accumulibacter has been identified as dominant polyphosphate-accumulating organisms(PAOs) in enhanced biological phosphorus(P) removal(EBPR) from wastewater.This study revealed the relevance of community structure, abundance and seasonal population dynamics of Candidatus Accumulibacter to process operation of wastewater treatment plants(WWTPs) in China using ppk1 gene as phylogenetic marker. All sludge samples had properties of denitrifying P removal using nitrate as an electron acceptor.Accumulibacter abundance in the anaerobic-anoxic-oxic(A^2O) process was the highest(26%of total bacteria), and higher in winter than in summer with a better EBPR performance.Type-II was the dominant Accumulibacter in all processes, and type-I accounted for a small proportion of total Accumulibacter. The abundance of Clade-IIC as the most dominant clade reached 2.59 × 10~9 cells/g MLSS and accounted for 87.3% of total Accumulibacter. Clade IIC mainly contributed to denitrifying P removal. Clades IIA, IIC and IID were found in all processes, while clade-IIF was only found in oxidation ditch process through phylogenetic analysis. High proportion of clade IID to total Accumulibacter led to poor performance of aerobic P-uptake in inverted A^2O process. Therefore, Accumulibacter clades in WWTPs were diverse, and EBPR performance was closely related to the clade-level community structures and abundances of Accumulibacter. | Wei Zeng Limin Zhang Pengchao Fan Jingjing Guo Yongzhen Peng | 2018 | Journal of Environmental Sciences2018，30，5： | 6 |
| 5 | Overview and countermeasures of cancer burden in China显示文摘Cancer is one of the leading causes of human death worldwide.Treatment of cancer exhausts significant medical resources,and the morbidity and mortality caused by cancer is a huge social burden.Cancer has therefore become a serious economic and social problem shared globally.As an increasingly prevalent disease in China,cancer is a huge challenge for the country’s healthcare system.Based on recent data published in the Journal of the National Cancer Center on cancer incidence and mortality in China in 2016,we analyzed the current trends in cancer incidence and changes in cancer mortality and survival rate in China.And also,we examined several key risk factors for cancer pathogenesis and discussed potential countermeasures for cancer prevention and treatment in China. | Yian Wang Qijia Yan Chunmei Fan Yongzhen Mo Yumin Wang Xiayu Li Qianjin Liao Can Guo Guiyuan Li Zhaoyang Zeng Wei Xiong He Huang | 2023 | Science China(Life Sciences)2023，66，11： | 5 |
| 6 | Circular RNA circCCNB1 inhibits the migration and invasion of nasopharyngeal carcinoma through binding and stabilizing TJP1 mRNA显示文摘Nasopharyngeal carcinoma(NPC)is a malignant tumor that usually occurs in people from Southeast Asia and Southern China.NPC is prone to migration and invasion,leading to poor prognosis.A large number of circular RNAs(circ RNAs)exacerbate the process of metastasis in NPC;however,their underlying mechanisms remain unclear.We found that the circular RNA circ CCNB1,encoded by the oncogene CCNB1,was downregulated in NPC biopsies and cell lines.In vitro assays show that circ CCNB1 inhibits NPC cell migration and invasion.Moreover,circ CCNB1 induces a protein,nuclear factor 90(NF90),to bind and prolong the half-life of tight junction protein 1(TJP1)m RNA.Upregulation of TJP1 enhances tight junctions between cancer cells and inhibits NPC cell migration and invasion.This study reveals a novel biological function of circ CCNB1 in the migration and invasion of NPC by enhancing the tight junctions of cancer cells by binding to NF90 proteins and TJP1 m RNA,and may provide a potential therapeutic target for NPC. | Mengyao Zhao Yian Wang Fenghua Tan Lingyun Liu Xiangchan Hou Chunmei Fan Le Tang Yongzhen Mo Yumin Wang Qijia Yan Zhaojian Gong Zheng Li Qianjin Liao Can Guo He Huang Xi Zeng Guiyuan Li Zhaoyang Zeng Wei Xiong Fuyan Wang | 2022 | Science China(Life Sciences)2022，65，11： | 4 |
| 7 | Effects of lanthanum on hot deformation behaviour of Mn-Cr-Mo bainitic rail steel显示文摘Effects of lanthanum(La) as micro-alloying element on the hot deformation behaviour of the high strength Mn-Cr-Mo bainitic rail steel were investigated under a range of deformation conditions. The results indicate that La increases the flow stress by 10-30 MPa through strengthening nanoscale strain induced precipitation(SIP) θ-(Fe,La)3 C during hot deformation. The hot deformation activation energy increases by 10-40 kJ/mol due to the 'Zener effect' of SIP and the dynamic recrystallization(DRX) is retarded due to the competitive behaviour between SIP and DRX. Bainite plates in the DRX domain can be refined by adding La, resulting in the improvement of hot workability. The DRX domain with peak power dissipation efficiency of 52% is determined to be the optimal processing region for Mn-Cr-Mo-La bainitic rail steel. | Xirong Bao Jun'an Wang Xiaodong Wang Feng Guo Yongzhen Liu | 2018 | Journal of Rare Earths2018，36，7： | 2 |
| 8 | Biological sludge reduction and enhanced nutrient removal in a pilot-scale system with 2-step sludge alkaline fermentation and A 2 O process显示文摘 | Yongqing Gao Yongzhen Peng Jingyu Zhang Shuying Wang Jianhua Guo Liu Ye | 2010 | Bioresource Technology2010，，5： | 2 |
| 9 | Nutrient removal performance and microbial community structure in an EBPR system under the limited filamentous bulking state显示文摘 | Xiong Yang Yongzhen Peng Nanqi Ren Jianhua Guo Xiaoxue Tang Jichen Song | 2013 | Bioresource Technology2013，，： | 2 |
| 10 | Molecularly imprinted polymer on carbon microsphere surfaces for adsorbing dibenzothiophene显示文摘 | Yongzhen Yang Xuguang Liu Mingcong Guo Sha Li Weifeng Liu Bingshe Xu | 2011 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2011，，1： | 1 |
| 11 | Effects of atorvastatin loading prior to primary percutaneous coronaryintervention on endothelial function and inflammatory factors in patients withST?segment elevation myocardial infarction显示文摘 | Huijuan Yong Xin Wang Lin Mi Lijun Guo Wei Gao Yongzhen Zhang Ming Cui | 2014 | Experimental and Therapeutic Medicine2014，，： | 1 |
| 12 | Biological nitrogen removal with nitrification and denitrification via nitrite pathway显示文摘 | Peng Yongzhen Zhu Guibing Guo Jianhua | 2006 | Applied Microbiology and Biotechnology2006，73，1： | 1 |
| 13 | Longterm effect of dissolved oxygen on partial nitrification performance and microbial community structure显示文摘 | Guo Jianhua Peng Yongzhen Wang Shuying | | 0，，11： | 1 |
| 14 | Experimental observation of resonant modes in GaInAsP microsquare resonators显示文摘 | Huang Yongzhen Chen Qin Guo Weihua | 2005 | IEEE Photonics Technology Letters2005，17，12： | 1 |
| 15 | The uptake and detoxification of antimony by plants: A review显示文摘 | Renwei Feng Chaoyang Wei Shuxin Tu Yongzhen Ding Ruigang Wang Junkang Guo | 2013 | Environmental and Experimental Botany2013，，： | 1 |
| 16 | Whispering-gallery-like modes in square resonators显示文摘 | Guo Weihua Huang Yongzhen Lu Qiaoyin | 2003 | IEEE J Quantum Electron2003，39，9： | 1 |
| 17 | Short-and long-term effects of temperature on partial nitrification in a sequencing batch reactor treating domestic wastewater显示文摘 | Guo Jianhua Peng Yongzhen Huang Huijun | 2010 | Journal of Hazardous Materials2010，179，13： | 1 |
| 18 | Achieving nitrite accumulation in a continuous system treating low-strength domestic wastewater: switchover from batch start-up to continuous operation with process control 显示文摘 | Yongzhen Peng Jianhua Guo Harald Horn | 2012 | Applied Microbiology and Biotechnology2012，，94： | 1 |
| 19 | Biological nitrogen removal with real-time control using step-feed SBR technology显示文摘 | Jianhua Guo Qing Yang Yongzhen Peng Anming Yang Shuying Wang | 2006 | Enzyme and Microbial Technology2006，，6： | 1 |
| 20 | Computation of resonant frequencies and quality factors of cavities by FDTD technique and Pade approximation 显示文摘 | Guo Weihua Li Weijun Huang Yongzhen | 2001 | IEEE Microwave and Wireless Components Letters2001，11，5： | 1 |
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