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255篇 您的检索式:作者名="Zhou Zhiqiang"
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1Tillage and straw mulching impacts on grain yield and water use efficiency of spring maize in Northern Huang–Huai–Hai Valley显示文摘A two-year field experiment(2012–2013) was conducted to investigate the effects of two tillage methods and five maize straw mulching patterns on the yield, water consumption,and water use efficiency(WUE) of spring maize(Zea mays L.) in the northern Huang–Huai–Hai valley of China. Compared to rotary tillage, subsoil tillage resulted in decreases in water consumption by 6.3–7.8% and increases in maize yield by 644.5–673.9 kg ha-1, soil water content by 2.9–3.0%, and WUE by 12.7–15.2%. Chopped straw mulching led to higher yield,soil water content, and WUE as well as lower water consumption than prostrate whole straw mulching. Mulching with 50% chopped straw had the largest positive effects on maize yield, soil water content, and WUE among the five mulching treatments. Tillage had greater influence on maize yield than straw mulching, whereas straw mulching had greater influence on soil water content, water consumption, and WUE than tillage. These results suggest that 50% chopped straw mulching with subsoil tillage is beneficial in spring maize production aiming at high yield and high WUE in the Huang–Huai–Hai valley.Zhiqiang Tao Congfeng Li Jingjing Li Zaisong Ding Jie Xu Xuefang Sun Peilu Zhou Ming Zhao 2015The Crop Journal2015,3,5:26
2Seasonal variations and size distributions of water-soluble ions in atmospheric aerosols in Beijing, 2012显示文摘The characteristics of water-soluble ions in airborne particulate matter in Beijing were investigated using ion chromatography. The results showed that the total concentrations of ions were 83.7 ± 48.9 μg/m3 in spring, 54.0 ± 17.0 μg/m3 in summer, 54.1 ± 42.9 μg/m3 in autumn, and 88.8 ± 47.7 μg/m3 in winter, respectively. Furthermore, out of all the ions, NO3-,SO42-and NH4+accounted for 81.2% in spring, 78.5% in summer, 74.6% in autumn, and 76.3%in winter. Mg2+and Ca2+were mainly associated with coarse particles, with a peak that ranged from 5.8 to 9.0 μm. Na+, NH4+and Cl-had a multi-mode distribution with peaks that ranged from 0.43 to 1.1 μm and 4.7 to 9.0 μm. K+, NO3-, and SO42-were mainly associated with fine particles, with a peak that ranged from 0.65 to 2.1 μm. The concentrations of Na+, K+,Mg2+, Ca2+, NH4+, Cl-, NO3-and SO42-were 2.69, 2.32, 1.01, 4.84, 16.9, 11.8, 42.0, and 44.1 μg/m3 in particulate matter(PM) on foggy days, respectively, which were 1.4 to 7.3 times higher than those on clear days. The concentrations of these ions were 2.40, 1.66, 0.92, 4.95, 17.5,7.00, 32.6, and 34.7 μg/m3 in PM on hazy days, respectively, which were 1.2–5.7 times higher than those on clear days.Yongjie Yang Rui Zhou Jianjun Wu Yue Yu Zhiqiang Ma Lejian Zhang Yi'an Di 2015Journal of Environmental Sciences2015,27,8:19
3Chromosome-scale genome assembly provides insights into the evolution and flavor synthesis of passion fruit (Passiflora edulis Sims)显示文摘Passion fruit(Passiflora edulis Sims)is an economically valuable fruit that is cultivated in tropical and subtropical regions of the world.Here,we report an~1341.7Mb chromosome-scale genome assembly of passion fruit,with 98.91%(~1327.18Mb)of the assembly assigned to nine pseudochromosomes.The genome includes 23,171 protein-coding genes,and most of the assembled sequences are repetitive sequences,with long-terminal repeats(LTRs)being the most abundant.Phylogenetic analysis revealed that passion fruit diverged after Brassicaceae and before Euphorbiaceae.Ks analysis showed that two whole-genome duplication events occurred in passion fruit at 65 MYA and 12 MYA,which may have contributed to its large genome size.An integrated analysis of genomic,transcriptomic,and metabolomic data showed that‘alpha-linolenic acid metabolism’,‘metabolic pathways’,and‘secondary metabolic pathways’were the main pathways involved in the synthesis of important volatile organic compounds(VOCs)in passion fruit,and this analysis identified some candidate genes,including GDP-fucose Transporter 1-like,Tetratricopeptide repeat protein 33,protein NETWORKED 4B isoform X1,and Golgin Subfamily A member 6-like protein 22.In addition,we identified 13 important gene families in fatty acid pathways and eight important gene families in terpene pathways.Gene family analysis showed that the ACX,ADH,ALDH,and HPL gene families,especially ACX13/14/15/20,ADH13/26/33,ALDH1/4/21,and HPL4/6,were the key genes for ester synthesis,while the TPS gene family,especially PeTPS2/3/4/24,was the key gene family for terpene synthesis.This work provides insights into genome evolution and flavor trait biology and offers valuable resources for the improved cultivation of passion fruit.Zhiqiang Xia Dongmei Huang Shengkui Zhang Wenquan Wang Funing Ma Bin Wu Yi Xu Bingqiang Xu Di Chen Meiling Zou Huanyu Xu Xincheng Zhou Rulin Zhan Shun Song 2021Horticulture Research2021,8,1:15
4The Deep-Time Digital Earth program:data-driven discovery in geosciences显示文摘Current barriers hindering data-driven discoveries in deep-time Earth(DE)include:substantial volumes of DE data are not digitized;many DE databases do not adhere to FAIR(findable,accessible,interoperable and reusable)principles;we lack a systematic knowledge graph for DE;existing DE databases are geographically heterogeneous;a significant fraction of DE data is not in open-access formats;tailored tools are needed.These challenges motivate the Deep-Time Digital Earth(DDE)program initiated by the International Union of Geological Sciences and developed in cooperation with national geological surveys,professional associations,academic institutions and scientists around the world.DDE’s mission is to build on previous research to develop a systematic DE knowledge graph,a FAIR data infrastructure that links existing databases and makes dark data visible,and tailored tools for DE data,which are universally accessible.DDE aims to harmonize DE data,share global geoscience knowledge and facilitate data-driven discovery in the understanding of Earth’s evolution.Chengshan Wang Robert MHazen Qiuming Cheng Michael HStephenson Chenghu Zhou Peter Fox Shu-zhong Shen Roland Oberhansli Zengqian Hou Xiaogang Ma Zhiqiang Feng Junxuan Fan Chao Ma Xiumian Hu Bin Luo Juanle Wang Craig M.Schiffries 2021National Science Review2021,8,9:14
5Mechanochemical preparation of sulfur-doped nanosized TiO_2 and its photocatalytic activity under visible light显示文摘In order to make nanosized TiO2 photocatalyst responsive to visible light and effectively utilize solar energy, we have, for the first time, prepared S-doped nanosized TiO2 by a mechanochemical method with hydrolysis of TiCl4. The as-prepared S-doped nanosized TiO2 possesses strong ab-sorption for visible light of 400―650 nm and shows high photocatalytic activity for decomposition of methylene blue under irradiation of visible light. The oxidation states of the S atoms incorporated into TiO2 were determined to be S6+ and S4+. The comparative study of fluorescence emission spectra shows that S-doping has also improved the separa-tion of electron-hole pairs.ZHOU Zhiqiang ZHANG Xianyou WU Ze DONG Limin 2005Chinese Science Bulletin2005,50,23:12
6Toward Intelligent Machine Tool显示文摘With the development of modern information technology-and particularly of the new generation of artificial intelligence(AI)technology-new opportunities are available for the development of the intelligent machine tool(IMT).Based on the three classical paradigms of intelligent manufacturing as defined by the Chinese Academy of Engineering,the concept,characteristics,and systemic structure of the IMT are presented in this paper.Three stages of machine tool evolution-from the manually operated machine tool(MOMT)to the IMT-are discussed,including the numerical control machine tool(NCMT),the smart machine tool(SMT),and the IMT.Furthermore,the four intelligent control principles of the IMT-namely,autonomous sensing and connection,autonomous learning and modeling,autonomous optimization and decision-making,and autonomous control and execution-are presented in detail.This paper then points out that the essential characteristic of the IMT is to acquire and accumulate knowledge through learning,and presents original key enabling technologies,including the instruction-domain-based analytical approach,theoretical and big-data-based hybrid modeling technology,and the double-code control method.Based on this research,an intelligent numerical control(INC)system and industrial prototypes of IMTs are developed.Three intelligent practices are conducted,demonstrating that the integration of the new generation of AI technology with advanced manufacturing technology is a feasible and convenient way to advance machine tools toward the IMT.Jihong Chen Pengcheng Hu Huicheng Zhou Jianzhong Yang Jiejun Xie Yakun Jiang Zhiqiang Gao Chenglei Zhang 2019Engineering2019,5,4:12
7A New Species of Cathayornis from the Lower Cretaceous of Inner Mongolia,China and Its Stratigraphic Significance显示文摘摘要:不完全的 postcranial 鸟的骨骼从西方的内部蒙古的 Otog 旗帜的更低的白垩纪 Jingchuan 形成被描述并且指了 Cathayornis 的新种, C。chabuensis sp。nov。这是从外面的辽宁省的 Cathayornis 的第一份报告。新发现显示 Cathayornis 与 Otogornis genghisi 共存了,并且更多详细说明了在 Otogornis 代表的这二 enantiornithine 类表演之间的比较一个更原始的类比 Cathayornis。我们的分析进一步显示 Cathayornis 是一只树木的鸟。从这个区域的 Cathayornis 的发现也证实鸟的忍受石块的 Jingchuan 形成比得上在西方的辽宁的上面的 Jehol 组的 Jiufotang 形成,并且应该被指中间迟了的早白垩纪。LI Jianjun LI Zhiheng ZHANG Yuguang ZHOU Zhonghe BAI Zhiqiang ZHANG Lifu BA Tuya 2008Acta Geologica Sinica(English Edition)2008,82,6:11
8Nonlinear fault detection based on locally linear embedding显示文摘In this paper,a new nonlinear fault detection technique based on locally linear embedding(LLE)is developed.LLE can effciently compute the low-dimensional embedding of the data with the local neighborhood structure information preserved.In this method,a data-dependent kernel matrix which can reflect the nonlinear data structure is defned.Based on the kernel matrix,the Nystr o¨m formula makes the mapping extended to the testing data possible.With the kernel view of the LLE,two monitoring statistics are constructed.Together with the out of sample extensions,LLE is used for nonlinear fault detection.Simulation cases were studied to demonstrate the performance of the proposed method.Aimin MIAO Zhihuan SONG Zhiqiang GE Le ZHOU Qiaojun WEN 2013控制理论与应用(英文版)2013,11,4:8
9Allele-defined genome reveals biallelic differentiation during cassava evolution显示文摘Dear Editor,Generation of heterozygous genomes by hybridization between or within species can help maintain plant diversity and serve as a potential source of new species(Baek et al.,2018).Moreover,genomic heterozygosity is associated with genomic coadaptation,developmental stability,and heterosis.Accurate definition of alleles in haplotypes is necessary to precisely characterize allelic variation controlling agriculturally important traits(Shi et al.,2019).Currently,most released genomes have mosaic assembly of haplotypes due to random selection or collapse of alleles during genome assembly(Shi et al.,2019),which masked allelic variation and functional differentiation of divergent alleles in heterozygous species.Wei Hu Changmian Ji Haitao shi Zhe Liang Zehong Ding Jianqiu Ye Wenjun Ou Gang Zhou Weiwei Tie Yan Yan Jinghao Yang Xiaoying Yang Yunxie Wei Zhiqiang Jin Jianghui Xie Ming Peng Wenquan Wang Anping Guo Biyu Xu Jianchun Guo Songbi Chen Liming Ma Mingcheng Wang Yang Zhou Xiaolong Li Ruoxi Li Siyi Guo Xinhui Xiao Zhongqing Wan Feifei An Jie Zhang Qingyun Leng Yin Li Ray Ming Kaimian Li 2021Molecular Plant2021,14,6:8
10Joint effects of cadmium and lead on seedlings of four Chinese cabbage cultivars in northeastern China显示文摘In northeastern China, large area of vegetable land has been simultaneously polluted by cadmium (Cd) and lead (Pb). Joint effects of Cd and Pb on Chinese cabbage (Brassica pekinensis L.) were investigated using the seed germination and sand culture method. Four Chinese cabbage cultivars including Kangbingjinchun (KB), Dongyangchunxia (DY), Qinglvwang (QL) and Qiangshi (QS) from Shenyang in northeastern China were adopted in this study. The results showed that there were positive linear relationships between the inhibitory rate of biomass, root and shoot elongation and the concentrations of Cd and Pb. In particular, root elongation was more sensitive to joint stress of Cd and Pb. The activity of superoxide dismutase and the content of malondialdehyde (MDA), soluble protein (SP) and proline (PRO) changed significantly with increasing exposure concentration of Cd and Pb. The decrement in the activity of antioxidative enzymes, the content of SP and accumulation of MDA were relatively low in KB and QS. PRO played an important role in resisting Cd and Pb stress.XU Zhiqiang 2009Journal of Environmental Sciences2009,21,11:8
11New insight into adsorption characteristics and mechanisms of the biosorbent from waste activated sludge for heavy metals显示文摘The adsorption characteristics and mechanisms of the biosorbent from waste activated sludge were investigated by adsorbing Pb2+and Zn2+in aqueous single-metal solutions. A p H value of the metal solutions at 6.0 was beneficial to the high adsorption quantity of the biosorbent. The optimal mass ratio of the biosorbent to metal ions was found to be 2. A higher adsorption quantity of the biosorbent was achieved by keeping the reaction temperature below 55°C. Response surface methodology was applied to optimize the biosorption processes, and the developed mathematical equations showed high determination coefficients(above 0.99 for both metal ions) and insignificant lack of fit(p = 0.0838 and 0.0782 for Pb2+and Zn2+, respectively). Atomic force microscopy analyses suggested that the metal elements were adsorbed onto the biosorbent surface via electrostatic interaction. X-ray photoelectron spectroscopy analyses indicated the presence of complexation(between –NH2,-CN and metal ions) and ion-exchange(between –COOH and metal ions). The adsorption mechanisms could be the combined action of electrostatic interaction, complexation and ion-exchange between functional groups and metal ions.Yun Zhou Zhiqiang Zhang Jiao Zhang Siqing Xia 2016Journal of Environmental Sciences2016,28,7:7
12Developmentally Regulated Glucosylation of Bitter Triterpenoid in Cucumber by the UDP-Glucosyltransferase UGT73AM3显示文摘Yang Zhong Xiaofeng Xue Zhiqiang Liu Yongshuo Ma Kewu Zeng Lida Han Jingjing Qi Dae-Kyun Ro Soren Bak Sanwen Huang Yuan Zhou Yi Shang 2017Molecular Plant2017,10,7:7
13Determination of Eight Organophosphorus Pesticide Residues in Pepper by QuEChERS-Gas Chromatography显示文摘[Objectives] This study was conducted to establish a QuEChERS-gas chromatography method for determination of eight kinds of organophosphorus pesticide residues in pepper. [Methods] The samples were extracted by acetonitrile,and anhydrous magnesium sulfate was used for salting out. The extracts were then purified by dispersive solid phase extraction combining with GCB,C18 and PSA. Samples were analyzed by FPD detector. External standard was used as quantitive method. [Results]The detection limits were in the range of 0. 001-0. 008 mg/kg,the average recoveries ranged from 83. 5% to 101. 2%,and the relative standard deviation( RSD) of the eight organophosphorus pesticide residues were below 5%. [Conclusions] The method is simple,quick,easy and effective for the determination of pepper.Siyuan BI Zhiqiang ZHU Wenhua CHI Mingshan CHEN Xingxing WANG Shouan ZHOU 2018Agricultural Biotechnology2018,7,1:7
14Synthesis,functionalization,and nanomedical applications of functional magnetic nanoparticles显示文摘Synthesis of magnetic nanoparticles(MNPs) is one of the most active research areas in advanced materials. MNPs that have magnetic properties and other functionalities have been demonstrated to show great promise in nanomedical applications. This review summarizes the current MNPs preparation,functionalization and stabilization methods. It also analyzes the detailed features of MNPs. And furthermore it highlights some actual case analyses of these MNPs for disease therapy, drug delivery,hyperthermia, bioseparation and bioimaging applications.Zhou Chen Cao Wu Zhenfeng Zhang Wangping Wu Xuefeng Wang Zhiqiang Yu 2018Chinese Chemical Letters2018,29,11:7
15Recent advancements in optical microstructure fabrication through glass molding process显示文摘Tianfeng ZHOU Xiaohua LIU Zhiqiang LIANG Yang LIU Jiaqing XIE Xibin WANG 2017Frontiers of Mechanical Engineering2017,12,1:6
16Autonomous driving: cognitive construction and situation understanding显示文摘Autonomous vehicle is a kind of typical complex artificial intelligence system. In current research of autonomous driving, the most widely adopted technique is to use a basic framework of serial information processing and computations, which consists of four modules: perception, planning, decision-making, and control. However, this framework based on data-driven computing performs low computational efficiency,poor environmental understanding and self-learning ability. A neglected problem has long been how to understand and process environmental perception data from the sensors referring to the cognitive psychology level of the human driving process. The key to solving this problem is to construct a computing model with selective attention and self-learning ability for autonomous driving, which is supposed to possess the mechanism of memorizing, inferring and experiential updating, enabling it to cope with traffic scenarios with high noise, dynamic, and randomness. In addition, for the process of understanding traffic scenes,the efficiency of event-related mechanism is more significant than single-attribute scenario perception data.Therefore, an effective self-driving method should not be confined to the traditional computing framework of‘perception, planning, decision-making, and control’. It is necessary to explore a basic computing framework that conforms to human driver’s attention, reasoning, learning, and decision-making mechanism with regard to traffic scenarios and build an autonomous system inspired by biological intelligence. In this article, we review the basic methods and main progress in current data-driven autonomous driving technologies, deeply analyze the limitations and major problems faced by related algorithms. Then, combined with authors’ research, this study discusses how to implement a basic cognitive computing framework of self-driving with selective attention and an event-driven mechanism from the basic viewpoint of cognitive science. It further describes how to use multi-sensor and graph data with semantic information(such as traffic maps and a spatial correlation of events) to realize the associative representations of objects and drivable areas, as well as the intuitive reasoning method applied to understanding the situations in different traffic scenarios. The computing framework of autonomous driving based on a selective attention mechanism and intuitive reasoning discussed in this study can adapt to a more complex, open, and dynamic traffic environment.Shitao CHEN Zhiqiang JIAN Yuhao HUANG Yu CHEN Zhuoli ZHOU Nanning ZHENG 2019Science China(Information Sciences)2019,62,8:6
17A marsupial robotic fish team: Design, motion and cooperation显示文摘A bio-inspired marsupial robotic fish system composed of heterogeneous robotic fish is proposed in this paper. A miniature robotic fish, as the daughter robotic fish, can adapt to some narrow space, while the mother robotic fish, with a cabin to transport the daughter, possesses a powerful movement ability to improve the mobility and endurance of the team. The structures for mimicking bio-motion and the method for fishlike-motion are presented. A typical task of daughter-mother following is given to show the cooperation of the team. A motion model of free swimming is built based on the Lagrangian function, and the coupled dynamic and kinematic functions are calculated based on the relation between the generalized force and fluid force. Then, a neural network is trained through the data generated from this model to get a predictive yaw controller, which can control the orientation by a different offset of each link. The daughter robotic fish adopts a dynamic light source tracking approach to follow the mother, and a heterogeneous communication-based finite state machine is presented for task modeling. Experiments are carried out to verify the system.ZHOU Chao*, CAO ZhiQiang, WANG Shuo & TAN Min Laboratory of Complex Systems and Intelligence Science, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China 2010Science China(Technological Sciences)2010,53,11:6
18Enhanced struvite recovery from wastewater using a novel cone-inserted fluidized bed reactor显示文摘The feasibility of struvite recovery at low(12.5 mg/L) and high(120 mg/L) phosphorus concentrations was studied by constructing a novel fluidized bed reactor with cones(FBRwc) and without cones(FBRwoc). The crystallization process was continuously operated for 133 days under different hydraulic retention times(HRT = 1–10 hr), pH(7.5–10), and molar ratios of Mg/P(0.75–1.75), N/P(1–10) and Ca/Mg(0–2). The optimum operating conditions of HRT, pH, Mg/P and N/P molar ratios were found to be 2 hr, 9, 1.25, and 7.5, respectively. Under these optimum conditions, the phosphorus precipitation efficiencies of FBRwcwere 93% for low and 98% for high phosphorus influent; however, the efficiencies were 78% and 81% for FBRwoc, respectively. Due to crystal losses at each junction(17%–31%), the crystal recovery efficiency of FBRwocwas relatively low(47%–65%) for both influent concentrations. However, the losses were minimal in FBRwc, which showed 75% and 92% crystal recovery for low and high phosphorus concentrations, respectively. At low calcium concentration, crystal chemical analysis showed the product to be pure struvite(> 99%). The scanning electron microscope and X-ray diffraction results further confirmed that the crystal recovered from FBRwc contained pure struvite, which could be considered a high quality fertilizer. Except HRT, all parameters(pH, Mg/P, N/P and Ca/Mg) were found to be influencing factors for FBRwcperformance. Overall, inserting cones in each part of the reactor played a significant role in enhancing struvite recovery from a wide range of phosphorus-containing wastewater.Awoke Guadie Siqing Xia Wei Jiang Lijie Zhou Zhiqiang Zhang Slawomir W.Hermanowicz Xiaoyin Xu Shuang Shen 2014Journal of Environmental Sciences2014,26,4:6
19Assessment of the Transmission Risk of Schistosomiasis after Flooding-North Poyang Lake,Jiangxi Province,China,2020显示文摘What is already known about this topic?Over 90%of Oncomelania snails,the only intermediate host of Schistosoma japonicum,are distributed in the middle and low reaches of Yangtze River.Flooding can extend the distribution of Oncomelania snails and hence accelerate the transmission of schistosomiasis.What is added by this report?Although the dispersal of Oncomelania snails was negligible in north Poyang Lake after flooding in 2020,2 samples of cattle feces with Schistosoma egg and 2 infected snails samples were indeed found.All four risk sites were distributed in Lushan County.Cattle feces were observed in the six out of seven field sites in Lushan County.What are the implications for public health practice?The present national control strategy focusing on control of infection source should be reinforced in Lushan and other schistosomiasis endemic areas.Overlaps of infected snails and cattle feces with Schistosoma egg were not observed,which called for intensive surveillance in Lushan County.Shan Lv Fan Yang Zhiqiang Qin Chunli Cao Jing Xu Shizhu Li Xiao-nong Zhou 2021China CDC weekly2021,3,5:5
20Rapid Assessment on Potential Risks of Schistosomiasis Transmission—7 PLADs,China,2019 and 2021显示文摘Summary What is already known about this topic?Oncomelania hupensis(O.hupensis)and livestock are main infection sources of schistosomiasis.The schistosome infected O.hupensis and livestock’s feces are important risk factors in the transmission of schistosomiasis.What is added by this report?The potential risks of schistosomiasis transmission remain prevalent,giving an early warning to local government with information on existing transmission risks.It is expected that the effectiveness and efficiency of schistosomiasis surveillance could be improved by conducting rapid risk assessment at the beginning of transmission season.Junyi He Hongqing Zhu Ziping Bao Lijuan Zhang Yinlong Li Ting Feng Suying Guo Wangping Deng Can Wang Hui Dang Tiewu Jia Chao Lyu Zhiqiang Qin Chunli Cao Jing Xu Shizhu Li Xiaonong Zhou 2021China CDC weekly2021,3,51:5
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