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| 1 | Spectral Properties of Transmission Amplitude Gratings显示文摘The core components of the precision instruments such as spectroscope and spectrograph is grating. And onedimensional multi-slot transmission amplitude grating is the most simple, and its basic theory is also an important basis used as reference when perform grating design, this shows the important status of transmission amplitude grating in spectroscopy study. In this paper, the theory of Fraunhofer Diffraction in optics was used in introducing the basic conclusion and spectral pattern characteristics, with the concrete experiment the spectral pattern of transmission amplitude grating in the monochromatic light and complex light is showed, then the theoretical analysis was done by mathematical reasoning and numerical simulation, the specific expression of spectral characteristic parameters in transmission amplitude was study to confirm the effects of these parameters on the produced spectral, results show that these parameters are independently. Through these studies, we understand that in the design of gratings should pay attention to the full consideration of these parameters and how to specifically improve the performance of the grating. | Runming Pan Chengwei Ji Kaifeng Cao | 2018 | Journal of Analytical Chromatography and Spectroscopy2018，1，1： | 0 |
| 2 | Enabling high-efficiency ethanol oxidation on NiFe-LDH via deprotonation promotion and absorption inhibition显示文摘Nucleophile oxidation reaction(NOR), represented by ethanol oxidation reaction(EOR), is a promising pathway to replace oxygen evolution reaction(OER). EOR can effectively reduce the driving voltage of hydrogen production in direct water splitting. In this work, large current and high efficiency of EOR on a Ni, Fe layered double hydroxide(NiFe-LDH) catalyst were simultaneously achieved by a facile fluorination strategy. F in NiFe-LDH can reduce the activation energy of the dehydrogenation reaction, thus promoting the deprotonation process of NiFe-LDH to achieve a lower EOR onset potential. It also weakens the absorption of OH-and nucleophile electrooxidation products on the surface of NiFe-LDH at a higher potential, achieving a high current density and EOR selectivity, according to density functional theory calculations. Based on our experiment results, the optimized fluorinated NiFe-LDH catalyst achieves a low potential of 1.386 V to deliver a 10 mA cm^(-2)EOR. Moreover, the Faraday efficiency is greater than 95%, with a current density ranging from 10 to 250 mA cm^(-2). This work provides a promising pathway for an efficient and cost-effective NOR catalyst design for economic hydrogen production. | Jiawei Shi Huawei He Yinghua Guo Feng Ji Jing Li Yi Zhang Chengwei Deng Liyuan Fan Weiwei Cai | 2023 | Journal of Energy Chemistry2023，，10： | 0 |
| 3 | Modeling and Simulation of an Invasive Mild Hypothermic Blood Cooling System显示文摘Nowadays,mild hypothermia is widely used in the fields of post-cardiac arrest resuscitation,stroke,cerebral hemorrhage,large-scale cerebral infarction,and craniocerebral injury.In this paper,a locally mixed sub-low temperature device is designed,and the cold and hot water mixing experiment is used to simulate the human blood transfer process.To set a foundation for the optimization of the heat transfer system,the static characteristics are analyzed by building the mathematic model and setting up the experimental station.In addition,the affection of several key structure parameters is researched.Through experimental and simulation studies,it can be concluded that,firstly,the mathematical model proved to be effective.Secondly,the results of simulation experiments show that 14.52℃ refrigeration can reduce the original temperature of 33.42℃ to 32.02℃,and the temperature of refrigerated blood rises to 18.64℃,and the average error is about 0.3℃.Thirdly,as the thermal conductivity of the vascular sheath increases,the efficiency of the heat exchange system also increases significantly.Finally,as the input cold blood flow rate increases,the mass increases and the temperature of the mixed blood temperature decreases.It provides a research basis for subsequent research on local fixed-point sub-low temperature control technology. | Na Wang Qinghua Liu Yan Shi Shijun Wang Xianzhi Zhang Chengwei Han Yixuan Wang Maolin Cai Xunming Ji | 2021 | Chinese Journal of Mechanical Engineering2021，34，1： | 0 |
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