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Rainfall retrieval over land from satellite remote sensing (SSM/I)

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Chinese Science Bulletin 1998年第22期43卷 1913-1917页

作者： Li Li Yuanjing Zhu bolin zhao Peking Univ State Key Lab Severe Storm Res Dept Geophys Beijing 100871 Peoples R China

Composite microwave index (CMI) method is used with the satellite SSM/I data to retrieve summer rainfall rate over 96°E-127°E, 17°N-44°N. The results of verification are : the root_of_mean_square error is 0.9 mm/h in the actual rain rate range from 2 to 2.9 mm/h; 1.6 mm/h in that from 3 to 5 mm/h and the maximum rms error is 4.2 mm/h in that from 5.1 to 50 mm/h. Case study shows the decision tree and CMI method presented in the note are effective to the rainfall recognition and rain rate retrieval over land of East China.

关键词： satellite microwave remote sensing rainfall retrieval over land.

3D Tungsten Trioxide Nanosheets as Optoelectronic Materials for On-chip Quantification of Global Antioxidant Capacity

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Chemical Research in Chinese Universities 2021年第3期37卷 763-771页

作者： DAI Mengjiao MA Weiguang HAN Fangjie HAN Dongfang HAN Lipeng WANG Wei zhao bolin HAN Dongxue NIU Li WANG Zhenxin State Key Laboratory of Electroanalytical Chemistry c/o Engineering Laboratory for Modern Analytical TechniquesChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P.R.China University of Science and Technology of China Hefei230026P.R.China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023P.R.China Center for Advanced Analytical Science c/o School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou510006P.R.China

The photoelectrochemical properties of semiconductors mainly depend on the size and shape of the corresponding ***,3D WO3 nanosheets were controllably synthesized with the aid of polyethyleneimine,which presents enhanced photocurrent *** on this excellent photoelectrochemical property,a photoelectrochemical chip was prepared by lithography technology for the smart monitoring of the antioxidant capacity(AC)in red wine and exhibits a series of advantages including rapid response time,high sensitivity,and long-lasting *** mechanism of the present photoelectrochemical sensing was explored and shows a single electron transfer ***,only 200µL of samples are required for one testing,which demonstrates that the present photoelectrochemical chip can be potentially integrated with a portable commercial device(such as a mobile phone)for further research and development of food and drug supervision.

关键词： 3D tungsten trioxide nanosheet Photoelectrochemical chip Antioxidant capacity assessment Red wine assessment Gallic acid

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控制力矩陀螺的动态扫描成像卫星姿态控制

国防科技大学学报 2016年第4期38卷 119-124页

作者：赵波林刘昆张立国防科技大学航天科学与工程学院湖南长沙410073

针对卫星动态扫描成像任务中的姿态控制问题,建立卫星姿态动力学模型,分析动态扫描成像任务对姿态控制的特殊需求。结合动态扫描成像任务需求提出一种典型的姿态机动方案,对姿态机动过程所需控制力矩进行估计。基于期望力矩和星体实时... 详细信息

针对卫星动态扫描成像任务中的姿态控制问题,建立卫星姿态动力学模型,分析动态扫描成像任务对姿态控制的特殊需求。结合动态扫描成像任务需求提出一种典型的姿态机动方案,对姿态机动过程所需控制力矩进行估计。基于期望力矩和星体实时姿态设计一种俯仰机动控制律,并提出五棱锥构型陀螺群的操纵方案。针对某动态扫描成像任务卫星,对提出的控制律进行数值仿真。仿真结果证明所提方案可以满足卫星动态扫描成像的姿态控制要求。

关键词：动态扫描成像姿态控制姿态机动方案俯仰机动控制律五棱锥构型陀螺群

Adsorption and desorption mechanisms on graphene oxide nanosheets: Kinetics and tuning

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The Innovation 2021年第3期2卷 79-85页

作者： Xiaodan Qu Qiong Hu Zhongqian Song Zhonghui Sun Baohua Zhang Jialing Zhong Xuyou Cao Yuanjin Liu bolin zhao Zhenbang Liu Yujie Shen Yu Bao Zhenxin Wang Yuwei Zhang Li Niu Center for Advanced Analytical Science c/o School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryUniversity of Science and Technology of ChinaChangchun 130022China School of Civil Engineering Guangzhou UniversityGuangzhou 510006China University of Science and Technology of China Hefei 230026China

A knowledge of the adsorption and desorption behavior of sorbates on surface adsorptive site(SAS)is the key to optimizing the chemical reactivity of ***,direct identification of the chemical reactivity of SASs is still a challenge due to the limitations of characterization ***,we present a new pathway to determine the kinetics of adsorption/desorption on SASs of graphene oxide(GO)based on total internal reflectance fluorescence *** switching on and off of the fluorescent signal of SAS lit by carbon dots(CDs)was used to trace the adsorption process and desorption *** find that sodium pyrophosphate(PPi)could increase the adsorption equilibrium of CDs thermodynamically and promote the substrate-assisted desorption pathway *** the single turnover level,it was disclosed that the species that can promote desorption may also be an adsorption *** discovery provides significant guidance for improving the chemical reactivity of the heterogeneous catalyst.

关键词： adsorption desorption fluorescence microscopy graphene oxide carbon dots

Model Free Adaptive Control Algorithm based on ReOSELM for Autonomous Driving Vehicles

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Model Free Adaptive Control Algorithm based on ReOSELM for A...

Research Advances of Exotoxin Gene and Related Vaccines of Clostridium perfringens

第40届中国控制会议

作者： Xiaofei Zhang Hongbin Ma Zhichao Wang Mingyu Fan bolin zhao School of Automation Beijing Institute of Technology State Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Institute of Technology The College of Computer Science and Artificial Intelligence Wenzhou University

Different road conditions and dynamic environment bring significant challenges to the control system of autonomous driving vehicle（ADV）. As is known, historical data collected from ADV contains valuable information about control systems,therefore, it is a promising thing to study adaptive control algorithms that have certain learning ability. In order to improve the control performance of ADV and the efficiency in data usage, in this paper, a model free adaptive control algorithm based on regularized online sequential extreme learning machine（ReOSELM） is introduced, it is difficult to analyze the algorithm based on neural network, and the system stability by improved update algorithm of ReOSELM is proved. Simulation results indicate that the proposed algorithm is effective in improving control precision when ADV is turning, and experimental results on an autonomous driving vehicle show that this algorithm is effective in real environment.

关键词： data-driven control autonomous driving vehicle model free adaptive control regularized online sequential extreme learning machine

来源： cnki会议评论

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Animal Husbandry and Feed Science 2017年第2期9卷 108-111页

作者： Sun Yu Wang Xiaoying Dong Hao Qu Ping Hu Dongmei zhao bolin Shi Hui Song Xiaohui China Animal Disease Control Center Beijing 102600China

Clostridium peringens, also called clostridium westergren, mainly causes diseases in ruminants, such as gas gangrene, enterotoxaemia, hemorrhagic enteritis of cattle and sheep. The bacteria are divided into five subtypes including A, B, C, D and E subtype, which can secrete more than 10 kinds of exotoxin,In these toxins, a, β, ε and ζ play a key pathogenic role. At present, the disease is prevented mainly by univalent vaccine, combined vaccine and muhivalent inactivated vaccine. And the genetic engineering subunit vaccine and nucleic acid vaccine has wide develop- ment prospects. In order to provide some reference for comprehensive prevention and deep research of C. pe^ringens, the etiological characteristics of C. perfrin- germ, pathogenic mechanism of exotoxin and research progress of related vaccines were reviewed, and the genetic engineering subunit vaccine and nucleic acid vac- cine development prospects were also discussed in this paper.

关键词： Clostridiumperfringens Exotoxin Pathogenic mechanism Vaccine

Efficient and Soluble Expression of α Protein of Clostridium perfringens and Preparation of Genetic Engineering Subunit Vaccine

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Animal Husbandry and Feed Science 2017年第5期9卷 284-288,305页

作者： Sun Yu Yang Lin Wang Chuanbin Dong Hao Qu Ping zhao bolin Hu Dongmei Yang Tianyi Song Xiaohui China Animal Disease Control Center Beijing 102600 China

[Objective] The paper was to develop genetic engineering vaccine that can express α exotoxin antigen protein efficiently without destroying its immunogenicity for preventing and controlling the diseases caused by Clostridium perfringens. [Method] Efficiently expressed soluble recombinant α protein was obtained from Escherichia coli expression system by optimizing codon,removing signal peptide,selecting sequences with better hydrophilicity and antigenicity,and optimizing expression conditions. [Result] Mice obtained higher serum antibody level when immunized by α protein,and the immune protection rates against type A,type B,type C and type D C. perfringens were 100%,90%,85% and 90%,respectively. The antibody titer of mice within 7-14 d after the third immunization reached the peak. [Conclusion]The α protein has good immunogenicity,and can be further used to develop genetic engineering subunit vaccines for preventing C. perfringens.

关键词： Clostridium perfringens α protein Soluble expression and purification Genetic engineering subunit vaccine

Label-free photoelectric sensor for lactic acid determination in human sweat

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Chinese Chemical Letters 2023年第4期34卷 474-478页

作者： Hao Gu Guoxin Dai Siyu Liu Yanbing Zhai Qian Xu Hongqiang Wu Wei Xu School of Life Science Beijing Institute of TechnologyBeijing 100081China School of Medical Technology Beijing Institute of TechnologyBeijing 100081China National Institute of Metrology Beijing 100029China Biotree Metabolomics Technology Research Center Shanghai 201800China

A label-free lactic acid sensor has been successfully developed by using a Dysprosium single crystal-based photoelectric potential technique via Dy-SCN/FTO electrode. Interestingly, the proposed sensor demonstrated excellent performance for L-lactic acid analysis with a wide linear range of 0.0196~16.31 mmol/L,the detection limit of as low as 3.20 μmol/L as well as an advisable stability. The feasibility of this strategy was also verified by practical application towards human sweat samples. The mechanism studies indicated that lactic acid molecules specifically bind to the surface of semiconductor materials, which alters the charge distribution of the electrode surface and subsequently results in band bending/photoelectric potential changes. The theoretical formula for this photoelectric chemistry(PEC) strategy was then derived according to charge balance theory. We believe that the proposed Dy-SCN/FTO sensor would open a new way for rapid, non-invasive L-lactic acid level evaluation during human physical condition monitoring.

关键词： Mass spectrometry Instrumentation LC-MS Immunosuppressants

MICROWAVE EMISSIVITY AND REMOTE SENSING OF OIL SLICK ON WATER SURFACE

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Chinese Science Bulletin 1985年第12期30卷 1648-1654页

作者：赵柏林韩庆源 Department of Geophysics Peking University

Faced with the task of protecting ocean evironment, people have long been concerned at the problem how to monitor oil pollution on sea surface. In this paper, study is conducted on the characteristics of microwave emissivity to improve the microwave remote sensing of petroleum pollution on sea surface, because microwave emissivity proves to be of practical value owing to its direct link with passive microwave remote sensing.

关键词： microwave SURFACE protecting ocean petroleum concerned layered outer Polarization remarkably