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A Sub-100 mg Electromagnetically Driven Insect-inspired Flapping-wing Micro Robot Capable of Liftoff and Control Torques Modulation

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Journal of Bionic Engineering 2020年第6期17卷 1085-1095页

作者： Chenyang Wang Weiping Zhang yang zou Ran Meng Jiaxin Zhao Mingchen Wei National Key Laboratory of Science and Technology on Micro/Nano Fabrication School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Inspired by the unique,agile and efficient flapping flight of insects,we present a novel sub-100 mg,electromagnetically driven,tailless,flapping-wing micro *** robot utilizes two optimized electromagnetic actuators placed back to back to drive two wings separately,then kinematics of each wing can be independently controlled,which gives the robot the ability to generate all three control torques of pitch,roll and yaw for *** quantify the performance of the robot,a simplified aerodynamic model is used to estimate the generated lift and torques,and two customized test platforms for lift and torque measurement are built for this *** mean lift generated by the robot is measured to be proportional to the square of the input voltage *** three control torques are measured to be respectively proportional to three decoupled parameters of the control voltages,therefore the modulation of three control torques for the robot is independent,which is helpful for the further controlled *** these measured results fit well with the calculated results of the aerodynamic ***,with a total weight of 96 mg and a wingspan of 3.5 cm,this robot can generate sufficient lift to take off.

关键词： insect-inspired insect-scale micro robot FMAV electromagnetic actuation

Simultaneous removal of SO2 and NO using a spray dryer absorption(SDA) method combined with O3 oxidation for sintering/pelleting flue gas

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Journal of Environmental Sciences 2020年第10期32卷 64-71页

作者： Maoyu Cai Xiaolong Liu Tingyu Zhu yang zou Wenliang Tao Mengkui Tian School of Chemistry and ChemicalEngineering Guizhou UniuersityGuiyang 550025China National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Center for Excellence in Regional Atmospheric Enuironment Institute of Urban EnuironmentChinese Academy of SciencesXiamen 361021China

Based on the demand of sintering/pelleting flue gas ultra-low emission,a semi-dry method using a spray dryer absorber (SDA) combined with O3 oxidation was proposed for simultaneous removal of SO2 and *** of O3 injection site,O3/NO molar ratio,and spray tower temperature on the removal efficiencies were *** was revealed that both desulfurization and denitrification efficiencies could reach to 85%under the conditions of setting O3 injection site inside of tower,O3/NO molar ratio 1.8,spray tower temperature 85°C,Ca/(S+2N) molar ratio 2.5 and slurry flow rate 300 m L/***3/Ca(OH)2 mixture slurry was used as absorbent to simulate operating conditions in iron and steel *** result shows that the addition of CaSO3 weakens both removal *** addition,the reaction mechanism of simultaneous removal of SO2 and NO using SDA combined with O3 oxidation was proposed.

关键词： O_3 oxidation Desulfurization Denitrification Semi-dry method Spray dryer absorption

A robust statistical procedure to discover expression biomarkers using microarray genomic expression data

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第8期7卷 603-607页

作者： zou yang-yun yang Jian ZHU Jun Institute of Bioinformatics Zhejiang University Hangzhou 310029 China

Microarray has become increasingly popular biotechnology in biological and medical researches, and has been widely applied in classification of treatment subtypes using expression patterns of biomarkers. We developed a statistical procedure to identify expression biomarkers for treatment subtype classification by constructing an F-statistic based on Henderson method Ⅲ. Monte Carlo simulations were conducted to examine the robustness and efficiency of the proposed method. Simulation results showed that our method could provide satisfying power of identifying differentially expressed genes （DEGs） with false discovery rate （FDR） lower than the given type I error rate. In addition, we analyzed a leukemia dataset collected from 38 leukemia patients with 27 samples diagnosed as acute lymphoblastic leukemia （ALL） and 11 samples as acute myeloid leukemia （AML）. We compared our results with those from the methods of significance analysis of microarray （SAM） and microarray analysis of variance （MAANOVA）. Among these three methods, only expression biomarkers identified by our method can precisely identify the three human acute leukemia subtypes.

关键词： Microarray Biomarker Henderson method Ⅲ Gene expression pattern Mixed linear model

Conceptual design and neutronic analysis of a megawatt-level vehicular microreactor based on TRISO fuel particles and S-CO_(2) direct power generation

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Nuclear Science and Techniques 2022年第6期33卷 18-33页

作者： Fang-Yuan Zhang Gui-Feng Zhu yang zou Rui Yan Hong-Jie Xu Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

With global warming,the demand for diversified energy sources has increased *** microreactors are important potential supplements to the global power market and are a promising development *** paper describes a 5 MW integrated long-life S-CO_(2)cooled vehicular microreactor(VMR)design based on tristructural isotropic(TRISO)fuel particles that aims to provide electricity for industrial power facilities,remote mines,and remote mountainous areas that are not connected to central power ***,to facilitate transportation,flexible deployment,and simplified operation and maintenance requirements,the VMR core and auxiliary system were designed to be reasonably small and as simple as ***,the TRISO fuel particles used in the proposed VMR offer excellent properties,such as high inherent security and nonproliferation,which are vital for reactors in remote *** addition,a long core lifetime was achieved using the compact core design and enhanced fuel loading capacity,which is challenging when using TRISO as ***,to make the VMR economically competitive in terms of improved neutron performance and fuel efficiency compared to similar designs,large-size TRISO particles and tube-in-duct fuel assembly were utilized and different core configurations were schemed and simulated to obtain the design that best satisfied the proposed *** lifetime and burnup in the final optimized VMR were satisfactory at 21 years and43.9 MWd/kgU,respectively,with an adequate shutdown margin and excellent safety parameters to ensure safe operation.

关键词： Vehicular microreactor Tristructural isotropic particle Tube-in-duct assembly Compact core Lifetime Burnup

Changes in feed intake, nutrient digestion, plasma metabolites, and oxidative stress parameters in dairy cows with subacute ruminal acidosis and its regulation with pelleted beet pulp

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Journal of Animal Science and Biotechnology 2014年第1期5卷 64-73页

作者： Yongqing Guo Xiaofeng Xu yang zou Zhanshan yang Shengli Li Zhijun Cao State Key Laboratory of Animal Nutrition College of Animal Science &Technology China Agricultural University

The objectives of this study were to 1） determine the variation of nutrient digestion, plasma metabolites and oxidative stress parameters triggered by induced subacute ruminal acidosis （SARA）; and 2） evaluate the ability of pelleted beet pulp （BP） as a replacement for ground corn to alleviate SARA. Eight Holstein-Friesian cows were fed four diets during four successive17 day periods： 1） total mixed ration （TMR） containing 0% finely ground wheat （FGW）（WO）; 2） TMR containing 10% FGW （W10）; 3） TMR containing 20% FGW （W20）; and 4） TMR containing 10% BP as a replacement for 10% ground corn （BP10）. The SARA induction protocol reduced the mean ruminal pH from 6.37 to 5.94, and the minimum ruminal pH decreased from 5.99 to 5.41 from baseline to challenge period. Mean ruminal pH increased from 5.94 to 6.05, and minimum daily ruminal pH increased from 5.41 to 5.63, when BP was substituted for corn. The apparent digestibility of nutrients was not affected by the dietary treatments, except that the digestibility of neutral detergent fibre （NDF） and acid detergent fibre （ADF） was reduced in cows fed the W20 diet compared with cows fed the W0 and W10 diets, and cows fed the BP10 diet had higher NDF and ADF digestibility than the cows fed the W20 diet. Cows fed the W20 diet had a lower plasma concentration of 13-hydroxybutyrate （BHBA）, non-esterified fatty acids （NEFA）, cholesterol, triglyceride, and total antioxidative capacity （TAC）, and a higher plasma concentration of glucose, insulin, malonaldehyde （MDA）, super oxygen dehydrogenises （SOD）, and glutathione peroxidase （GSH-Px） than cows fed the W0 diet. Substitution of BP for corn increased concentrations of plasma BHBA and TAC, but decreased concentrations of plasma MDA. Our results indicate that reduction of fibre digestion; the concomitant increase of plasma glucose and insulin; the decrease of plasma BHBA, NEFA, cholesterol, and triglyceride; and changes of plasma oxidative stress parameters are highly related to SARA indu

关键词： Beet pulp Dairy cow Nutrient digestion Oxidative status Plasma metabolites Subacute ruminal acidosis

Altering alkyl-chains branching positions for boosting the performance of small-molecule acceptors for highly efficient nonfullerene organic solar cells

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Science China Chemistry 2020年第3期63卷 361-369页

作者： Zhenghui Luo Rui Sun Cheng Zhong Tao Liu Guangye Zhang yang zou Xuechen Jiao Jie Min Chuluo yang Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of ChemistryWuhan UniversityWuhan 430072China The Institute for Advanced Studies Wuhan UniversityWuhan 430072China eFlexPV Limited(China) ShenzhenChina Department of Materials Science and Engineering Monash UniversityVictoriaAustralia

The emergence of the latest generation of small-molecule acceptor(SMA)materials,with Y6 as a typical example,accounts for the surge in device performance for organic solar cells(OSCs).This study proposes two new acceptors named Y6-C2 and Y6-C3,from judicious alteration of alkyl-chains branching positions away from the Y6 *** to the Y6,the Y6-C2 exhibits similar optical and electrochemical properties,but better molecular packing and enhanced *** contrast,the Y6-C3 shows a significant blue-shift absorption in the solid state relative to the Y6 and *** as-cast PM6:Y6-C2-based OSC yields a higher power conversion efficiency(PCE)of 15.89%than those based on the Y6(15.24%)and Y6-C3(13.76%),representing the highest known value for as-cast nonfullerene ***,the Y6-C2 displays a good compatibility with the ***,a ternary OSC device based on PM6:Y6-C2:PC71BM(1.0:1.0:0.2)was produced,and it exhibits an outstanding PCE of 17.06%and an impressive fill factor(FF)of *** results improve understanding of the structureproperty relationship for state-of-the-art SMAs and demonstrate that modulating the structure of SMAs via fine-tuning of alkylchains branching positions is an effective method to enhance their performance.

关键词： alkyl-chain branching position small molecular acceptor organic solar cell power conversion efficiency fill factor

Density functional theory(DFT) studies of vanadium-titanium based selective catalytic reduction(SCR) catalysts

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Journal of Environmental Sciences 2020年第4期32卷 119-137页

作者： Ziwei Zhao Erwei Li Yu Qin Xiaolong Liu yang zou Heng Wu Tingyu Zhu National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China State Key Laboratory of Solid Waste Reuse for Building Materials Beijing Building Materials Academy of Science ResearchBeijing 100041China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

Based on density functional theory(DFT)and basic structure models,the chemical reactions on the surface of vanadium-titanium based selective catalytic reduction(SCR)denitrification catalysts were *** structural models(non-periodic and periodic structural models)are the basis of density functional calculations.A periodic structure model was more appropriate to represent the catalyst surface,and its theoretical calculation results were more comparable with the experimental results than a nonperiodic *** is generally believed that the SCR mechanism where NH3 and NO react to produce N2 and H2 O follows an Eley-Rideal type ***2 NO was found to be an important intermediate in the SCR reaction,with multiple production ***,the effects of H2 O,SO2 and metal on SCR catalysts were also summarized.

关键词： Selective catalytic reduction(SCR) Structure model Vanadium-titanium based catalyst Density functional theory(DFT) Adsorption

Recent progress in human body energy harvesting for smart bioelectronic system

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Fundamental Research 2021年第3期1卷 364-382页

作者： yang zou Lin Bo Zhou Li CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 100083China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Department of Rheumatology The Second Affiliated Hospital of Soochow UniversitySuzhou 215004China Center on Nanoenergy Research School of Physical Science and Technology Guangxi UniversityNanning 530004China

From every heartbeat to every footstep, human beings dissipate energy all the time. Researchers are trying to harvest energy from the human body and convert it into electricity, which can be supplied to electronic medical devices closely related to human health. Such an energy recycling form is currently a research hotspot in the fields of energy harvesting and bioelectronics. This review firstly summarizes the distribution and characteristics of three primary energy sources contained in the human body, including thermal energy, chemical energy, and mechanical energy. Afterwards, the applicable energy harvesting technologies and corresponding working mechanisms for different energy sources are introduced. Some typical demos and practical applications of each type of human body energy harvesting technology are also presented. Specifically, the advantages and critical issues of different energy harvesting technologies are summarized, and corresponding promising solutions are also provided. Besides, the interaction strategies between various energy harvesting devices and the human body are summarized from the aspects of wearable and implantable applications. Finally, the concept of a self-powered closed-loop bioelectronic system (SCBS) is put forward for the first time, which organically combines portable electronic devices, implantable electronic medical devices, energy harvesting devices, and the human body. The prospect of symbiosis between the SCBS and the human body is provided. The demands and future development trends of the SCBS are also discussed.

关键词： Energy harvester Human body Self-powered Closed-loop Bioelectronic system

Application of global variance reduction method to calculate a high-resolution fast neutron flux distribution for TMSR-SF1

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Nuclear Science and Techniques 2019年第8期30卷 66-76页

作者： Pu yang Ye Dai yang zou Rui Yan Bo Zhou Shi-He Yu Yu-Wen Ma Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

The solid fuel thorium molten salt reactor(TMSR-SF1) is a 10-MWth fluoride-cooled pebble bed reactor. As a new reactor concept, one of the major limiting factors to reactor lifetime is radiation-induced material damage. The fast neutron flux(E > 0.1 MeV) can be used to assess possible radiation damage. Hence, a method for calculating high-resolution fast neutron flux distribution of the full-scale TMSR-SF1 reactor is required. In this study,a two-step subsection approach based on MCNP5 involving a global variance reduction method, referred to as forward-weighted consistent adjoint-driven importance sampling, was implemented to provide fast neutron flux distribution throughout the TMSR-SF1 facility. In addition,instead of using the general source specification cards, the user-provided SOURCE subroutine in MCNP5 source code was employed to implement a source biasing technique specialized for TMSR-SF1. In contrast to the one-step analog approach, the two-step subsection approach eliminates zero-scored mesh tally cells and obtains tally results with extremely uniform and low relative ***, the maximum fast neutron fluxes of the main components in TMSR-SF1 are provided, which can be used for radiation damage assessment of the structural materials.

关键词： TMSR-SF1 Fast neutron flux Globalvariance reduction MCNP