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MIDNet:Deblurring Network for Material Microstructure Images

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Computers, Materials & Continua 2024年第4期79卷 1187-1204页

作者： Jiaxiang Wang Zhengyi Li Peng Shi hongying yu Dongbai Sun National Center for Materials Service Safety University of Science and Technology BeijingBeijing100083China School of Materials Sun Yat-Sen UniversityShenzhen518107China School of Materials Science and Engineering Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Sun Yat-Sen UniversityGuangzhou510006China

Scanning electron microscopy(SEM)is a crucial tool in the field of materials science,providing valuable insightsinto the microstructural characteristics of ***,SEM images often suffer from blurrinesscaused by improper hardware calibration or imaging automation errors,which present challenges in analyzingand interpretingmaterial ***,rectifying the blurring of these images assumes paramountsignificance to enable subsequent *** address this issue,we introduce a Material Images DeblurringNetwork(MIDNet)built upon the foundation of the Nonlinear Activation Free Network(NAFNet).MIDNetis meticulously tailored to address the blurring in images capturing the microstructure of *** keycontributions include enhancing the NAFNet architecture for better feature extraction and representation,integratinga novel soft attention mechanism to uncover important correlations between encoder and decoder,andintroducing newmulti-loss functions to improve training effectiveness and overallmodel *** conducta comprehensive set of experiments utilizing the material blurry dataset and compare them to several state-of-theartdeblurring *** experimental results demonstrate the applicability and effectiveness of MIDNet in thedomain of deblurring material microstructure images,with a PSNR(Peak Signal-to-Noise Ratio)reaching 35.26 dBand an SSIM(Structural Similarity)of *** dataset is available at:https://***/woshigui/MIDNet.

关键词： Image deblurring material microstructure attention mechanism deep learning

基于USB 3.0的NAND FLASH数据存储设计

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现代电子技术 2024年第18期47卷 101-106页

作者：白昊宇余红英牛焱坤中北大学电气与控制工程学院山西太原030051

由于目前采用的串口和USB 2.0检测坏块、实现数据读取的方法存在数据读取慢以及数据稳定性低的问题,而在高速大容量存储装置设计中,存储器通常采用NAND FLASH,故提出一种基于USB 3.0总线的NAND FLASH数据存储设计。采用FPGA作为逻辑主... 详细信息

由于目前采用的串口和USB 2.0检测坏块、实现数据读取的方法存在数据读取慢以及数据稳定性低的问题,而在高速大容量存储装置设计中,存储器通常采用NAND FLASH,故提出一种基于USB 3.0总线的NAND FLASH数据存储设计。采用FPGA作为逻辑主控单元,选用USB 3.0芯片CyuSB3014作为FPGA与上位机的通信桥梁,并在FPGA软件上设计ECC数据校验纠错以及NAND FLASH的坏块管理。用户可通过上位机实现数据读取、擦除以及分析。实验结果表明,所设计系统可通过USB 3.0接口将NAND FLASH中存储的数据传输到上位机,传输速度实际可达39 MB/s。

关键词：数据存储 NAND FLASH FPGA USB 3.0 坏块管理数据校验高速数据处理上位机

Molybdenum based amorphous and nanocrystalline coatings prepared by high velocity oxy-fuel spraying

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Rare Metals 2012年第4期31卷 355-361页

作者： Fan, Zishuan yu, hongying Wang, Xudong Center for Corrosion and Protection University of Science and Technology BeijingBeijing 100083China

The high velocity oxy-fuel(HVOF) based thermal spray process has developed as a potential advantageous approach for fabricating various kinds of functional *** this article,the coatings of Mo-based alloy were synthesized using the HVOF *** microstructure and the mechanical properties of the HVOF-processed coatings were investigated using SEM,TEM,XRD,and hardness and wear *** treatment was applied to the as-sprayed coatings to develop the microstructure and its effect on the microstructure and mechanical properties of the coatings was *** is found that the HVOF-processed Mo-based alloy coatings are comprised of an amorphous splat matrix embedded with nano-sized crystalline *** at temperatures over 950 ℃ results into crystallization of the amorphous *** mechanical properties of the as-sprayed coatings are enhanced with annealing temperature up to 750 ℃ and from 950 to 1050 ℃,keeps constant between 750 and 950 ℃,and reduce over 1050 ℃.The change of the mechanical property with the microstructure was illustrated in the study.

关键词： molybdenum based alloy coating amorphous and nanocrystalline phases hardness and tribology anealling high velocity oxy-fuel spraying

Performances of a Balanced Hydraulic Motor with Planetary Gear Train

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Chinese Journal of Mechanical Engineering 2012年第4期25卷 760-767页

作者： yu hongying LUO Changjie WANG Huimin School of Mechatronics Engineering Harbin Institute of Technology Harbin 150001 China

The current research of a balanced hydraulic motor focuses on the characteristics of the motor with three planet *** of a balanced hydraulic motor with more than three planet gears are hardly *** order to study the characteristics of a balanced hydraulic motor with planetary gear train that includes more than three planet gears,on the basis of analysis of the structure and working principle of a balanced hydraulic motor with planetary gear train,formulas are deduced for calculating the hydraulic motor＇s primary performance indexes such as displacement,unit volume displacement,flowrate fluctuation ratio,*** of the gears＇ tooth number on displacement and flowrate characteristics are *** order to guarantee the reliability of sealing capability,the necessary conditions that tooth number of the sun gear and the planet gears should satisfy are *** large unit volume displacement and small displacement fluctuation ratio as designing objectives,a balanced hydraulic motor with three planet gears and a common gear motor are designed under the conditions of same displacement,tooth addendum coefficien and clearance *** comparing the unit volume displacement and fluctuation ratio of the two motors,it can be seen that the balanced hydraulic motor with planetary gear train has the advantages of smaller fluctuation ratio and larger unit volume *** results provide theoretical basis for choosing gear tooth-number of this kind of hydraulic motor.

关键词： planetary gear mechanism hydraulic motor tooth number selection

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杭州国家版本馆恒温恒湿空调系统设计

暖通空调 2024年第3期54卷 28-34页

作者：余红英金涛张浩浙江省建筑设计研究院杭州310006

介绍了恒温恒湿库房空调系统的设计,提出了可在库房建成初期、运行稳定期、战时等灵活切换的3种运行模式,分析了其各自的处理过程与节能性;给出了平、战时空调系统选择方案,提出了平时回收空气源热泵机组和冷水机组的冷凝热作为再热热源... 详细信息

介绍了恒温恒湿库房空调系统的设计,提出了可在库房建成初期、运行稳定期、战时等灵活切换的3种运行模式,分析了其各自的处理过程与节能性;给出了平、战时空调系统选择方案,提出了平时回收空气源热泵机组和冷水机组的冷凝热作为再热热源,战时利用新风预冷实现温湿度独立控制的方法;利用CFD模拟对室内气流组织进行了优化设计;提出了采用含湿量控制代替定露点法进行湿度控制和风机变频等控制策略。通过调试与运行,证明了各项设计措施在项目中应用的有效性。

关键词：恒温恒湿平战结合库房空调热回收再热含湿量控制

Identification of odorous compounds in reclaimed water using FPA combined with sensory GC-MS

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Journal of Environmental Sciences 2011年第10期23卷 1600-1604页

作者： Zhiming Yan yu Zhang Jianwei yu hongying yuan Min Yang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085 China.

Odorous compounds in the influent of a reclaimed water treatment plant （RWTP）, consisting of coagulation, sedimentation, continuous micro-filtration （CMF）, and chlorination in succession, in a north China city, were identified by combining flavor profile analysis （FPA） with sensory gas chromatograph-mass spectrometry （GC-MS）. The sewery/swampy/septic odor with an odor intensity of 6.4 was found to be the major odor group in the RWTP influent, and the existence of well-known odorant including dimethyl disulfide, dimethyl trisulfide, indole and skatole were confirmed using GC-MS. The result of a spiking test showed that the intensity （3.6） of the sewery/swampy/septic odor caused by these four chemicals contributed to over 50% of the odor intensity of the influent. The FPA intensity for sewery/swampy/septic odor in the RWTP effluent was 3.8, showing that the treatment process was not efficient for the removal of odorants, particularly indole and skatole.

关键词： sewery/swampy/septic odor reclaimed wastewater flavor profile analysis sensory-GC-MS analysis

Preparation of IrO_2+MnO_2 coating anodes and their application in NaClO production

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Journal of University of Science and Technology Beijing 2008年第4期15卷 461-467页

作者： Yongle Ni Huimin Meng Dong Chen Dongbai Sun hongying yu School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China

To improve the durability as well as to reduce the cost of anodes, the IrO2＋MnO2 composite coating anodes for NaCIO production were prepared by thermal decomposition. Scanning electron microscopy （SEM）, energy dispersive X-ray spectroscopy （EDX）, and X-ray diffraction analysis （XRD） were carried out to investigate the morphologies, element distribution, and microstructure. The anodic polarization curves were employed to study the effect of sintering temperature on the Cl2 evolution reaction （CER） of the electrodes. The accelerated life tests （ALT） and electrochemical impedance spectroscopy measurement （EIS） were utilized to investigate the stability. The rules of NaCIO production were also studied by the static electrolysis experiment. The results indicate that sintering temperature has a significant influence on the CER properties as well as the ALT values of the electrodes. The electrode prepared at 400℃ has the best CER properties and the longest ALT value.

关键词： iridium dioxide manganese dioxide sodium hypochlorite chlorine evolution stability impedance spectroscopy measurement (EIS)

Numerical study on fatigue damage properties of cavitation erosion for rigid metal materials

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Journal of University of Science and Technology Beijing 2008年第3期15卷 261-266页

作者： Guogang Wang Guang Ma Dongbai Sun hongying yu Huimin Meng School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Power Station Technology Division China Electric Power Research Institute Beijing 100070 China

Cavitation erosion is an especially destructive and complex phenomenon. To understand its basic mechanism, the fatigue process of materials during cavitation erosion was investigated by numerical simulation technology. The loading spectrum used was generated by a spark-discharged electrode. Initiation crack life and true stress amplitude was used to explain the cavitation failure period and damage mechanism. The computational results indicated that the components of different materials exhibited various fatigue lives under the same external conditions. When the groove depth was extended, the initiation crack life decreased rapidly, while the true stress amplitude was increased simultaneously. This gave an important explanation to the accelerating material loss rate during cavitation erosion. However, when the groove depth was fixed and the length varied, the fatigue life became complex, more fluctuant than that happened in depth. The results also indicate that the fatigue effect of cavitation plays an important role in contributing to the formation and propagation of characteristic pits.

关键词： cavitation erosion microjet numerical simulation fatigue analysis crack initiation loading spectrum

Mini-culotte stenting for bifurcation coronary disease

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Chinese Medical Journal 2014年第5期127卷 978-979页

作者： Wen Shangyu yu hongying Lee Hui Department of Cardiology Daqing Oilfield General Hospital DaqingHeilongjiang 163001 China

Coronary bifurcation lesions remain a challenging subset of lesions for percutaneous coronary intervention （PCI） with use of drug-eluting *** branch （SB）is the most problematic lesion with higher rates of instent restenosis leading to the need for revascularization.1The current consensus based on clinical studies have reported that two-stent strategies are required in only a small number of *** currently used complex stenting techniques,culotte stenting is comparable with the others.2-4 Unfortunately,the culotte technique has some limitations,of which double layers of metal struts is reported to be related to the occurrence of stent thrombosis （ST）.Stenting sequences of culotte stenting shares features with provisional T stenting,indicated by a jailed wire in a SB at risk of SB loss after stenting the main vessel （MV）.Accordingly we reported our modified mini-culotte stenting technique in 2008,5 but we found that mini-culotte is not always correctly used in *** a result,it is crucial to systematically describe the tips and pitfalls of mini-culotte techniques in details.

关键词： bifurcation coronary disease mini-culotte stenting