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Effects of HNO_3 concentration on the pit morphologies of aluminum foil etched in HNO_3–HCl and HNO_3–H_2SO_4–HCl solutions

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International Journal of Minerals,Metallurgy and Materials 2016年第1期23卷 70-76页

作者： Quan-xiu Yi Ye-dong He Ning Peng Hong-zhou Song xiao-fei Yang xiao-yu cai Beijing Key Laboratory for Corrosion Erosion and Surface Technology University of Science and Technology Beijing Institute of Technology Research and Development of Electronic Aluminum Foil Guangxi Hezhou Guidong Electronics Technology Co. Ltd.

In this work, the effects of HNO3 concentration on the pit morphologies of high-cubic-texture aluminum foil etched in HNO3-HCl and HNO3-H2SO4-HCl solutions were investigated. When the aluminum foil was etched in HNO3-HCl solutions, the morphologies of pits transformed from irregular tunnels to typical tunnels （as inverted pyramids） and shallow cuboids as the HNO3 concentration in the etchant solution was increased. However, as the HCl concentration in the etchant solution was increased, the morphologies of pits transformed from shallow cuboids to typical tunnels （as inverted pyramids） and irregular tunnels. When the aluminum foil was etched in n N HNO3-（7.2-n） N H2SO4-0.8 N HCl solutions, the morphologies of the pits transformed from typical tunnels （i.e., the number of sub-tunnels formed on the main tunnels increased） to irregular tunnels （corrugated tnnnels and polyline tunnels） as the HNO3 concentration in the etchant solution was increased. These effects are attributed primarily to corrosion on the （100） and （010） faces of pits being accelerated and to the （001） faces be- ing prone to passivation to different degrees when various concentrations of HNO3 are added to the etchant solutions.

关键词： aluminum foil pitting corrosion morphology passive films

Effect of tunnel structure on the specific capacitance of etched aluminum foil

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International Journal of Minerals,Metallurgy and Materials 2014年第10期21卷 974-979页

作者： Ning Peng Li-Bo Liang Ye-Dong He Hong-Zhou Song xiao-Fei Yang xiao-yu cai Beijing Key Laboratory for Corrosion Erosion and Surface Technology University of Science and Technology Beijing Institute of Technology Research and Development of Electronic Aluminum Foil Guangxi Hezhou Guidong Electronics Technology Co. Ltd.

The morphology of etched aluminum foil was observed using scanning electron microscopy, which led to the establishment of a cylindrical model and two merged models, considering the fixed weight loss of etching. The maximum of specific capacitance and the cor- responding optimum values for tunnel sizes at various anodization voltages were predicted. The increased size distribution and taper of tun- nels were demonstrated to decrease the specific capacitance, whereas the addition of polymeric additive into the ttmnel widening solution was demonstrated to increase the capacitance. The formation of merged tunnels on the etched aluminum surface, irrespective of the presence of row-merged tunnels or cluster-merged tunnels, resulted in a dramatic decrease in the specific capacitance. It is concluded that, enhancing the uniformity of turmel size and distribution and avoiding the formation of merged tunnels are the effective approach to achieving the higher capacitance for the tunnel etched and formed aluminum foil.

关键词： aluminum foil pitting corrosion capacitance morphology electrolytic capacitors

Degradation of metabolites of benzo[a]pyrene by coupling Penicillium chrysogenum with KMnO_4

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Journal of Environmental Sciences 2007年第2期19卷 238-243页

作者： ZANG Shu-yan LI Pei-jun yu xiao-cai SHI Kun ZHANG Hui CHEN Jing Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China Shenyang Institute of Chemical Technology Shenyang 110142 China Graduate School of Chinese Academy of Sciences Beijing 100039 China Environment Science and Engineering School Dalian Jiaotong University Dalian 116028 China Northeast University Shenyang 110006 China

Several main metabolites of benzo[a]pyrene （BaP） formed by Penicillium chrysogenum, Benzo[a]pyrene-1,6-quinone （BP 1,6- quinone）, trans-7,8-dihydroxy-7,8-dihydrobenzo[a]pyrene （BP 7,8-diol）, 3-hydroxybenzo[a]pyrene （3-OHBP）, were identified by high-performance liquid chromatography （HPLC）. The three metabolites were liable to be accumulated and were hardly further metabolized because of their toxicity to microorganisms. However, their further degradation was essential for the complete degradation of BaP. To enhance their degradation, two methods, degradation by coupling Penicillium chrysogenum with KMnO4 and degradation only by Penicillium chrysogenum, were compared; Meanwhile, the parameters of degradation in the superior method were optimized. The results showed that （1） the method of coupling Penicillium chrysogenum with KMnO4 was better and was the first method to be used in the degradation of BaP and its metabolites; （2） the metabolite, BP 1,6-quinone was the most liable to be accumulated in pure cultures; （3） the effect of degradation was the best when the concentration of KMnO4 in the cultures was 0.01% （w/v）, concentration of the three compounds was 5 mg/L and pH was 6.2. Based on the experimental results, a novel concept with regard to the bioremediation of BaP-contaminated environment was discussed, considering the influence on environmental toxicity of the accumulated metabolites.

关键词： BaP metabolites accumulated coupling potassium permanganate

Prophylaxis with intraocular pressure lowering medication and glaucomatous progression in patients receiving intravitreal anti-VEGF therapy

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International Journal of Ophthalmology(English edition) 2022年第10期15卷 1611-1618页

作者： Jeanette Du James T Patrie xiao-yu cai Bruce E Prum Yevgeniy Shildkrot New York Eye and Ear Infirmary of Mount Sinai 310 East 14 StreetNew YorkNY 10003USA Department of Public Health Sciences University of VirginiaP.0.Box 800717CharlottesvilleVirginia 22908USA Department of Ophthalmology University of Virginia School of Medicine1300 Jefferson Park AveCharlottesvilleVirginia 22908USA

AIM: To investigate whether pretreatment with pressurelowering medication prior to anti-vascular endothelial factor(VEGF) injections had an effect on glaucomatous progression in patients with preexisting glaucoma or ocular hypertension(OHT).METHODS: A total of 66 eyes from 54 patients with a preexisting diagnosis of glaucoma or OHT, treated with six or more anti-VEGF injections were selected for chart review. Primary outcome measures were rate of visual field loss in d B/year, rate of change in retinal nerve fiber layer(RNFL) thickness in microns/year, and need for additional glaucoma ***: The number of eyes requiring additional glaucoma medication was 5 of 20(25.0%) and 14 of 46(30.4%) for the pretreated and non-pretreated groups, respectively. The number of eyes requiring glaucoma laser or surgery was 4 of 20(20.0%) and 13 of 46(28.3%) for the pretreated and non-pretreated groups, respectively. Estimated mean rate of pattern standard deviation decline was not significant in either group(P>0.073), with no difference between groups(P=0.332). Although both groups showed significant RNFL change from baseline(P<0.011), no difference was detected between groups(P=0.467).CONCLUSION: Pretreatment has no detectable effect on structural or functional glaucomatous progression. Patients receiving repeated injections may be at risk for glaucomatous complications requiring invasive intervention.

关键词： anti-vascular endothelial growth factor therapy pretreatment glaucomatous progression

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng cai Shengjun Miao yuan Li yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

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社会保障支出对城乡收入差距的影响研究

华东经济管理 2017年第3期31卷 32-41页

作者：肖育才余喆杨四川大学公共管理学院四川成都610041 西南民族大学经济学院四川成都610041

社会保障支出具有明显的再分配功能,城乡之间社会保障支出的差异对于城乡收入差距的形成有一定的影响。文章对社会保障支出与城乡收入差距影响进行了理论分析、实证检验和效率评估,从理论上来说社会保障支出应该有利于缩小城乡收入差距... 详细信息

社会保障支出具有明显的再分配功能,城乡之间社会保障支出的差异对于城乡收入差距的形成有一定的影响。文章对社会保障支出与城乡收入差距影响进行了理论分析、实证检验和效率评估,从理论上来说社会保障支出应该有利于缩小城乡收入差距,现实中存在城市偏向的社会保障支出则不利于缩小城乡收入差距,实证检验也印证了中国社会保障支出与城乡收入差距呈正相关性,而效率评估进一步说明了中国社会保障支出在缩小城乡收入差距方面效率低下。在建立社会保障支出稳定增长机制的同时,应该进一步加大农村社会保障的财政投入,并做好城乡社会保障制度的转移和续接,提高社会保障支出再分配和保障功能的效率水平。

关键词：社会保障支出收入分配城乡收入差距效率评价

COMPrompter: reconceptualized segment anything model with multiprompt network for camouflaged object detection

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Science China(Information Sciences) 2025年第1期68卷 189-203页

作者： xiaoqin ZHANG Zhenni yu Li ZHAO Deng-Ping FAN Guobao xiao Zhejiang Province Key Laboratory of Intelligent Informatics for Safety and Emergency Wenzhou University Nankai International Advanced Research Institute (SHENZHEN FUTIAN) College of Computer Science Nankai University School of Computer Science and Technology Tongji University

We rethink the segment anything model(SAM) and propose a novel multiprompt network called COMPrompter for camouflaged object detection(COD). SAM has zero-shot generalization ability beyond other models and can provide an ideal framework for COD. Our network aims to enhance the single prompt strategy in SAM to a multiprompt strategy. To achieve this, we propose an edge gradient extraction module, which generates a mask containing gradient information regarding the boundaries of camouflaged objects. This gradient mask is then used as a novel boundary prompt, enhancing the segmentation process. Thereafter, we design a box-boundary mutual guidance module, which fosters more precise and comprehensive feature extraction via mutual guidance between a boundary prompt and a box prompt. This collaboration enhances the model's ability to accurately detect camouflaged objects. Moreover, we employ the discrete wavelet transform to extract high-frequency features from image embeddings. The high-frequency features serve as a supplementary component to the multiprompt ***, our COMPrompter guides the network to achieve enhanced segmentation results, thereby advancing the development of SAM in terms of COD. Experimental results across COD benchmarks demonstrate that COMPrompter achieves a cutting-edge performance, surpassing the current leading model by an average positive metric of 2.2% in COD10K. In the specific application of COD, the experimental results in polyp segmentation show that our model is superior to top-tier methods as well. The code will be made available at https://***/guobaoxiao/COMPrompter.

关键词： segment anything model camouflaged object detection boundary prompt

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β-PbO_2阳极的制备及其析氧性能的研究

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现代化工 2017年第10期37卷 77-80页

作者：别汉波宋宁俞小花和晓才俞双林昆明理工大学冶金与能源工程学院云南昆明650093 昆明冶金研究院冶金部云南昆明650021

为了提升镍阳极析氧活性,降低氧析出过电位,通过电镀技术在室温条件下制备了不同电流密度的二氧化铅镀层阳极。采用扫描电镜和X射线衍射对镀层的表面形貌和晶体结构进行了表征。运用循环伏安(CV)和线性扫描(LSV)技术分析比较了不同电流... 详细信息

为了提升镍阳极析氧活性,降低氧析出过电位,通过电镀技术在室温条件下制备了不同电流密度的二氧化铅镀层阳极。采用扫描电镜和X射线衍射对镀层的表面形貌和晶体结构进行了表征。运用循环伏安(CV)和线性扫描(LSV)技术分析比较了不同电流密度条件下的二氧化铅镀层的化学性质。并测试了所制阳极的镀锌槽电压的大小。研究表明,电流密度为20m A/cm2时,镀PbO_2层效果最好,β-PbO_2电极可促进阳极析氧反应的动力学过程,降低镍基阳极的析氧电位,β-PbO_2电极可通过降低析氧电位来降低电沉积金属锌的槽电压。

关键词：电镀析氧电位镍阳极二氧化铅镀层

Studies of Several Systems with Air Electrode Electro-Synthesizing H_2O_2 on the Spot for Degr ading Aniline in Aqueous

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Wuhan University Journal of Natural Sciences 2003年第01A期8卷 107-112页

作者： Cao xiao\|yu, cai Nai\|cai , Wang Y u\|ling, Xie Ling\|ling College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430 072, Hubei, China College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei China

A gas diffusion electrode (air electrode) with a high current efficiency of electro\|synthesizing H 2 O 2 using O 2 in air was prepared. The several systems with air electrode as cathode of ele ctro\|synthesizing H 2 O 2 on the reaction spot for degrading aniline in aqueous--electro\|Fenton system, photo\|excitation electro\|H 2 O 2 system and photo\|electro\|Fenton system, were developed. Th e rates of decomposition of H 2 O 2 and mineralization of anil ine were experimentally measured respectively under different conditions, and th e results indicated there has an excellent parallel relation between decompositi on rate of H 2 O 2 and mineralization rate of aniline. Especia lly, photo\|electro\|Fenton system, where H 2 O 2 is decompose d the fastest, is the best system of oxidizing and degrading organic toxicants. Compared photo\|electro\|Fenton system with photo\|Fenton system, important role is revealed in the interface of air electrode. In this paper, the mineralizatio n mechanism of aniline in the photo\|electro\|Fenton system was also discussed.

关键词： air electrode photo\|electro\|Fenton degrada tion of organic toxicants aniline