Hui Guo

Chinese Academy of Medical Sciences & Peking Union Medical College

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Zhongfang Li

Shandong University of Technology

Peng Sun

China University of Mining and Technology

Hongchang Pei

Shandong University of Technology

Xiaoyan Yin

Shandong First Medical University

Haofei Huang

Shandong University of Technology

Yan Wang

Sichuan University

Yuchao Li

Zhejiang University

Lei Zhang

Shandong Jianzhu University

Cuncun Zuo

Shandong University of Technology

Ping Li

Lanzhou University

Cooperative Institutions

Chinese Academy of Sciences

University of Chinese Academy of Sciences

NOAA Geophysical Fluid Dynamics Laboratory

Chinese Academy of Medical Sciences & Peking Union Medical College

Sun Yat-sen University

Princeton University

Peking University

Shanghai Jiao Tong University

Shandong University of Technology

National Oceanic and Atmospheric Administration

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Batch Fabrication of Miniaturized Ag/AgCl Reference Electrode With Ion Exchanging Micro-Nano-Pores by Silicon-Base Double-Side Anisotropic Etching Process

Journal of Microelectromechanical Systems (2019)

Zan Zhang Hui Guo Jiawen Yin Wanlei Gao Han Jin

To address the demands for the large-scale application of electrochemical sensors in the field of environmental pollution monitoring, a novel silicon-based Ag/AgCl reference electrode (RE) was batch fabricated. The reference electrode consisted of a mini-chamber for saturated KCl solution storage and micro-nano-pores for Cl ^- exchange. The microstructures were fabricated via a two-step KOH wet etching on double sided oxidized and polished silicon wafer. The size of the micro-nano-pore diameters were precisely controlled by the etching time. The Ag/AgCl electrode was prepared on a Pyrex 7740 glass via silver lift-off process and electrochemical treatment. The silicon and glass substrates were joined by anodic bonding to form the finished Ag/AgCl micro- reference electrode. Compared with a commercial glass tube Ag/AgCl reference electrode, the micro-RE had the advantages of better reference potential stability, a small size, easy integration, and batch fabrication. The micro-RE was combined with a PbO ₂ working electrode and a Pt counter electrode and applied to measure the glucose concentration in water samples. The results indicate that the novel micro-RE suitable for actual electrochemical detection, such as chemical oxygen demand (COD) measurements in water samples.

Anodic bonding

Auxiliary electrode

10.1109/jmems.2019.2936651

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The climate change and its ecosystem effect in the upper yellow river

Jianying Feng Zhizong Yao Ni Guo Mingling Gu Hui Guo

Based on meteorological and hydrological data collected from 1961 to 2004,NOAA/AVHRR NDVI data with 8times8 km spatial resolution from 1982 to 2003, climate change and its ecosystem effect are analyzed in the upper yellow river in this paper. The results showed that the change trend of temperature in the upper yellow river was consistent with global warming, and the increasing rate of annual mean soil temperature was higher than that of air temperature. Annual precipitation presented fluctuant change. Annual maximum frozen soil depth and annual runoff tends to decrease over the past 40 years, especially in 1990s.Dry and warming trend takes place both in climate and soil in the region, especially in soil. The drainage area of upper yellow river is an ecosystem fragility area, and it is sensitive to climate change. Our analyses indicated that grassland main growth periods are from May to October,NDVI peak value appeared in July in drainage area of the upper yellow river. Annual NDVI peak value and NDVI mean value could reflect preferably climate changes, and the trends of them appeared increased in some degree among oscillations in the past 20 years, which meant a better condition for vegetation growth or longer growing days in the study area. Furthermore, the temperature exhibits a more remarkable relativity than precipitation in the area.

10.1109/igarss.2007.4422916

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In-lake water turnover time shapes the distribution pattern of phytoplankton communities in a river-connected floodplain lake

Journal of Environmental Management (2024)

Gengnan Zhao Hao Wang Yiping Li Hui Guo Yitong Ding

Diversity index

10.1016/j.jenvman.2024.121157

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Citations (3)

Permafrost conditions over Heihe River Basin in Qilian Mountains of Western China

2015 AGU Fall Meeting (2015)

Bo Cao T. Zhang X. Zhang Xiaomei Peng Ke-Ling Wang

Chine

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Research on the Education Model of MHA Based on Comparison between China and America

Applied Mechanics and Materials (2014)

Hui Guo Ya Song Guo

Medical institutions are in urgent demand of the senior management professionals in China. This paper analyzes the MHA training model at the initial stage in China, and compares to the success experience of MHA education in University of Missouri, proposes building a MHA education model in China from the four aspects, limited top-level design, teaching content design, operating mechanism, and teaching quality monitoring and security system, and research some key problems.

10.4028/www.scientific.net/amm.631-632.1374

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Stable branched polybenzimidazole high temperature proton exchange membrane: Crosslinking and pentaphosphonic-acid doping lower fuel permeability and enhanced proton transport

Journal of Membrane Science (2021)

Hui Guo Zhongfang Li Hongchang Pei Peng Sun Lei Zhang

Nafion

Thermal Stability

Proton Transport

Arylene

10.1016/j.memsci.2021.120092

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Citations (46)

Interdecadal Variability of Seasonal Frozen Ground Depth and Its Climatic Reasons in Hexi Corridor of Gansu

Journal of Glaciology and Geocryology (2005)

Hui Guo

Analyzing the upper and lower limits of seasonal frozen ground depth, its main frozen period and ending date from 1958 to 2003 of 17 representative meteorological stations in Hexi Corridor of Gansu Province demonstrates that the change of seasonal maximum frozen ground depth has an 810 a period; There was a shift of the frozen ground depth in the mid 1980s, showing a winter temperature warming in Hexi Corridor of Gansu Province since the mid 1980s. The minimum air temperature in winter controls the seasonal frozen ground depth and its main frozen period. The thaw of frozen ground depends on the ground temperature in winter, with a pronounced negative correlation. Especially, the difference among the 5 cm ground temperature and the 1.5 m air temperature above surface, as well as the daily range of temperature in winter is more correlative to the frozen ground depth in Heixi Corridor of Gansu Province.

Maximum temperature

Ground level

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Study on present situation and optimization strategy of infiltration air in a train station in winter

Procedia Engineering (2017)

Biaobiao Wang Jinghua Yu Hong Ye Yunxi Liu Hui Guo

The role of hot or wind pressing forming a pressure difference between the indoor and out-door of the building envelop, the unorganized infiltration air will flow into rooms. Indoor and outdoor temperature, outdoor wind direction and speed have an impact on the infiltration air volume. There are multiple aisles connecting the outdoor space and the station hall, leading to a large amount of outdoor air into the station. In this paper, the measurement of infiltration air volume and regional temperature in railway station was performed in Wuhan. The software ContamW was used to simulate the ventilation paths and the infiltration air volume. The changes of infiltration air volume was analyzed, and the corresponding measures to reduce the infiltration air were studied. The results showed that using air curtains with the barrier efficiency of 62.6% and closing the opening windows, the static wind and v=3 m/s of northeast wind conditions, the amount of infiltration air can be reduced by 78% and 79% separately in Wuhan area.

Infiltration (HVAC)

10.1016/j.proeng.2017.09.984

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Citations (24)

Effects of Reaction Conditions on Low-Temperature Removal of Carbon Disulfide over Modified Coconut Shell Activated Carbons Catalysts

Advanced materials research (2014)

Li Tang Hui Guo Kai Li Ping Ning Chi Wang

In this work, a series of modified coconut shell activated carbons (CSAC) catalysts were prepared by sol-gel method and used for catalytic hydrolysis of carbon disulfide (CS 2 ) at low-temperatures. The influences of reaction conditions such as: reaction temperature, O 2 concentration, relative humidity (RH), gas hourly space velocity (GHSV) and inlet concentration of CS 2 on catalytic hydrolysis activities were studied. When the reaction temperature was 60°C, this catalyst showed the best catalytic performance and no better effect occurs with the increase of temperature. CS 2 hydrolysis activities were decreased with increasing amounts of O 2 . When the RH was 30%, the catalyst manifests the best activity. The catalytic hydrolysis activities were decreased with increased of GHSV from 5000~20000h -1 . In addition, when the inlet concentration of CS 2 increased from 10ppm to 100ppm, the catalytic hydrolysis activities could be decreased.

Space velocity

Carbon disulfide

10.4028/www.scientific.net/amr.894.293

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Citations (1)

Efficient assembly and anti-tumor evaluation of novel polycyclic [1,2-a]-fused indoles

Bioorganic Chemistry (2024)

Hui Guo Yuqi Tian Xing Wu Liangcheng Tu Ji‐Kai Liu

10.1016/j.bioorg.2024.107289

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Citations (1)