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Evidence of temperature-controlled dissolved inorganic nitrogen distribution in a shallow lake 期刊论文  OAI收割
JOURNAL OF ENVIRONMENTAL SCIENCES, 2022, 卷号: 122, 期号: 0, 页码: 105-114
作者:  
Wen, Yan;  Zhang, Wenqiang;  Shan, Baoqing;  Qu, Jie
  |  收藏  |  浏览/下载:19/0  |  提交时间:2023/02/06
Impact of the warm eddy on planktonic ciliate, with an emphasis on tintinnids as bioindicator species 期刊论文  OAI收割
ECOLOGICAL INDICATORS, 2021, 卷号: 133, 页码: 13
作者:  
Wang, Chaofeng;  Xu, Mingquan;  Xuan, Jun;  Li, Haibo;  Zheng, Shan
  |  收藏  |  浏览/下载:29/0  |  提交时间:2022/04/12
A High-Throughput Platform for the Rapid Quantification of Phosphorylated Histone H2AX in Cell Lysates Based on Microplate Electrochemiluminescence Immunosensor Array 期刊论文  OAI收割
ACS SENSORS, 2021, 页码: -
作者:  
Liu, Chang;  Qie, Yu;  Zhao, Lixia;  Li, Minjie;  Guo, Liang-Hong
  |  收藏  |  浏览/下载:7/0  |  提交时间:2022/01/04
Mapping the vertical distribution of maize roots in China in relation to climate and soil texture 期刊论文  OAI收割
JOURNAL OF PLANT ECOLOGY, 2018, 卷号: 11, 期号: 6, 页码: 899-908
作者:  
Wang, Sheng;  Huang, Yao;  Sun, Wenjuan;  Yu, Lingfei
  |  收藏  |  浏览/下载:14/0  |  提交时间:2022/02/25
Simulation of the Decadal Permafrost Distribution on the Qinghai-Tibet Plateau (China) over the Past 50 Years SCI/SSCI论文  OAI收割
2012
Cheng W. M.; Zhao S. M.; Zhou C. H.; Chen X.
收藏  |  浏览/下载:22/0  |  提交时间:2014/12/25
Influence of spatial temperature distribution on high accuracy interferometric metrology (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Yang H.;  Zhang J.;  Zhang J.;  Zhang J.;  Yan F.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
We calculate the influence of temperature change on the refractive index of air  establish a model of air temperature distribution and analyze the effect of different temperature distribution on the high accuracy interferometric metrology. First  a revised Edlen formula is employed to acquire the relation between temperature and refractive index of air  followed by introducing the fixed temperature gradient distribution among the spatial grid within the optical cavity between the reference flat and the test flat of the Fizeau interferometer  accompanied by a temperature change random function within each grid. Finally  all the rays through the air layer with different incident angles are traced by Matlab program in order to obtain the final output position  angle and OPD for each ray. The influence of different temperature distribution and the length of the optical cavity in on the testing accuracy can be analyzed through the RMS value that results from repeatable rays tracing. As a result  the horizontal distribution (vertical to optical axis) has a large effect on the testing accuracy. Thus  to realize the high accuracy figure metrology  the horizontal distribution of temperature must be rigorously controlled as well as to shorten the length of the optical cavity to a large extent. The results from our simulation are of great significant for the accuracy analysis of interferometric testing and the research of manufacturing a interferometer. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Simulation of Velocity and Temperature Distributions of Displacement Ventilation System with Single or Double Heat Sources 期刊论文  OAI收割
JOURNAL OF THERMAL SCIENCE, 2007, 卷号: 16, 期号: 2, 页码: 155,158
Wenfei Wu1; Xuan Wu1; Yanhui Feng2; Xinxin Zhang2
收藏  |  浏览/下载:13/0  |  提交时间:2013/01/31
Fabrication and electron emission of carbon microtubes (EI CONFERENCE) 会议论文  OAI收割
Technical Digest of the 18th International Vacuum Nanoelectronics Conference, IVNC 2005, July 10, 2005 - July 14, 2005, Oxford, United kingdom
作者:  
Liu L.;  Liu L.;  Wang W.;  Wang W.
收藏  |  浏览/下载:40/0  |  提交时间:2013/03/25
Carbon nanotubes have been attracting attention because of their unique physical properties and their application potential for field emission cathode. Carbon nanotubes possess the following properties favorable for field emission material  such as a high aspect ratio and sharp tip  high chemical stability  high mechanical strength  stable at high temperature. Some research works on carbon nanotubes field emitter and field emission display have been reported. Here  a kind of carbon microtubes and its field emission properties are introduced. They have some different properties with carbon nanotubes  and the density is lower than carbon nanotubes bundles. These carbon microtubes are directly synthesized by liquidoid epitaxy method on silicon substrates at low temperature. The field emission properties of carbon microtubes are reported too. Carbon microtubes film is synthesized in liquid by electrolysis. The graphite plate is as anode  and n-silicon substrate with resistivity of 4-8 cm is as cathode. The electrolysis current is about 5-8mA/cm2  and applied voltage is 800-1500V. Temperatures of the methanol base solution is maintained at 60C in process of deposition of carbon microtubes. Carbon microtubes film is observed by scanning electron microscopy(SEM)  as shown in fig.1(a  b). The wall's thickness of carbon microtube is about 60nm. The diameter of carbon microtube is about 0.8 m. Raman spectrum of carbon microtubes film shows the two peaks at 1342and 1560cm-1. The field emission properties of carbon microtubes are measured in high vacuum chamber(10-5Pa). The emission area of carbon microtubes is 0.5cm 0.5cm. The threshold of field emission of the carbon microtubes film is about 3.6V/ m. Field emission property of carbon microtubes film is shown in fig.2. Another  when the electric field between anode and cathode is 10V/ m  the electric field distribution on single carbon microtube is also given after calculation according to electric field theory. Fig 3 shows that electric field distribution vertical section on the of single carbon microtube top with 2 m of highness. These results may help us to understand field emission properties of carbon microtubes. According to research results  it is found that liquidoid synthesis is simple method to produce carbon microtubes cold cathode material  and the carbon microtubes have better field emission properties. 2005 IEEE.