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Leaching behavior and mineralogical evolution of vanadium released from sodium roasted-acid leaching tailing of vanadium slag

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Journal of Iron and Steel Research International 2022年第5期29卷 772-782页

作者： Bao liu Jin li qian-qian Ren Shuang Cai Xue Yang Ya-nan Zeng Jun-guo li College of Metallurgy and Energy North China University of Science and TechnologyTangshan063210HebeiChina

The sodium roasted-acid leaching tailing(SRALT)of vanadium slag with a certain amount of vanadium exhibits potential environmental *** investigate the leaching behavior of vanadium from the SRALT,neutral batch leaching tests were *** evolution of vanadium concentration,pH,redox potential(Eh),dissolved oxygen,and conductivity as a function of time was *** diagrams of V–H2O system with different vanadium concentrations were obtained to identify the ionic speciation of vanadium in leachate.X-ray diffraction,X-ray photoelectron spectroscopy,field emission-scanning electron microscopy,and thermogravimetry–differential scanning calorimetry analysis were conducted to investigate the mineralogical evolution of the SRALT during the leaching *** was found that the major minerals of the original SRALT are titanomagnetite,spinel,olivine,and *** valence states of V existing in the original SRALT are V^(3+)and V^(5+).The pH and Eh values of the obtained leachates are 10.00–10.58 and(−43)–(+67)mV,*** this pH and Eh region,the released vanadium is mainly present as HVO_(4)^(2−).The FeOOH and CaCO_(3)would form during the leaching *** HVO_(4)^(2−)would be mainly adsorbed by the FeOOH and slightly incorporated into the CaCO_(3),resulting in the decline in the vanadium *** vanadium concentration above 27 mg L^(−1)and the dissolved oxygen value below 5.0 mg L^(−1)can be obtained after a short leaching *** a V(V)-releasing and oxygen-depleting substance,the leaching toxicity of the SRALT should not be ignored.

关键词： Vanadium Vanadium slag Tailing Leaching toxicity Mineralogical analysis

Stroke-GAN Painter:Learning to paint artworks using stroke-style generative adversarial networks

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Computational Visual Media 2023年第4期9卷 787-806页

作者： qian Wang Cai guo Hong-ning Dai Ping li School of Computer Science and Engineering Macao University of Science and TechnologyMacaoChina Department of Computing The Hong Kong Polytechnic UniversityHong KongChina School of Computing and Information Engineering Hanshan Normal UniversityChaozhouChina Department of Computer Science Hong Kong Baptist UniversityHong KongChina School of Design The Hong Kong Polytechnic UniversityHong KongChina

It is a challenging task to teach machines to paint like human artists in a stroke-by-stroke *** advances in stroke-based image rendering and deep learning-based image rendering,existing painting methods have limitations:they(i)lack flexibility to choose different art-style strokes,(ii)lose content details of images,and(iii)generate few artistic styles for *** this paper,we propose a stroke-style generative adversarial network,called Stroke-GAN,to solve the first two ***-GAN learns styles of strokes from different stroke-style datasets,so can produce diverse stroke *** design three players in Stroke-GAN to generate pure-color strokes close to human artists’strokes,thereby improving the quality of painted *** overcome the third limitation,we have devised a neural network named Stroke-GAN Painter,based on Stroke-GAN;it can generate different artistic styles of *** demonstrate that our artful painter can generate various styles of paintings while well-preserving content details(such as details of human faces and building textures)and retaining high fidelity to the input images.

关键词： AI painting painting strokes artistic style

A GIS-Based Evaluation of Environmental Sensitivity for an Urban Expressway in Shenzhen, China

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Engineering 2018年第2期4卷 66-70页

作者： qian li Fengqing guo Yuntao Guan State Environmental Protection Key Laboratory of Microorganism Application and Risk Control School of Environment Ysinghua University Beijing 100084 China Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety Graduate School at Shenzhen Ysinghua University Shenzhen 518055 China College of Water Conservancy Engineering Yianjin Agricultural University Yianjin 300384 China

Urban eco-environmental degradation is becoming inevitable due to the extensive urbanization, popula- tion growth, and socioeconomic development in China. One of the traffic arteries in Shenzhen is an urban expressway that is under construction and that runs across environmentally sensitive areas （ESAs）. The environmental pollution from urban expressways is critical, due to the characteristics of expressways such as high runoff coefficients, considerable contaminant accumulation, and complex pollutant ingredi- ents. ESAs are vulnerable to anthropogenic disturbances and hence should be given special attention. In order to evaluate the environmental sensitivity along this urban expressway and minimize the influences of the ongoing road construction and future operation on the surrounding ecosystem, the environmental sensitivity of the relevant area was evaluated based on the application of a geographic information sys- tem （GIS）. A final ESA map was classified into four environmental sensitivity levels; this classification indicates that a large proportion of the expressway passes through areas of high sensitivity, representing 11.93 km or 52.3% of the total expressway, and more than 90% of the total expressway passes through ESAs. This study provides beneficial information for optimal layout schemes of initial rainfall runofftreatment facilities developed from low-impact development （liD） techniques in order to minimize the impact of polluted road runoff on the surrounding ecological environment.

关键词： Environmentally sensitive areas Urban expressway Geographic information system Low-impact development

A novel feature extraction method for ship-radiated noise

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Defence Technology（防务技术） 2022年第4期18卷 604-617页

作者： Hong Yang Lu-lu li guo-hui li qian-ru Guan School of Electronic Engineering Xi’an University of Posts and TelecommunicationsXi’anShaanxi710121China

To improve the feature extraction of ship-radiated noise in a complex ocean environment,a novel feature extraction method for ship-radiated noise based on complete ensemble empirical mode decomposition with adaptive selective noise(CEEMDASN) and refined composite multiscale fluctuation-based dispersion entropy(RCMFDE) is *** is proposed in this paper which takes into account the high frequency intermittent components when decomposing the *** addition,RCMFDE is also proposed in this paper which refines the preprocessing process of the original signal based on composite multi-scale ***,the original signal is decomposed into several intrinsic mode functions(IMFs)by *** distribution ratio(EDR) and average energy distribution ratio(AEDR) of all IMF components are ***,the IMF with the minimum difference between EDR and AEDR(MEDR)is selected as characteristic *** RCMFDE of characteristic IMF is estimated as the feature vectors of ship-radiated ***,these feature vectors are sent to self-organizing map(SOM) for classifying and *** proposed method is applied to the feature extraction of ship-radiated *** result shows its effectiveness and universality.

关键词： Complete ensemble empirical mode decomposition with adaptive noise Ship-radiated noise Feature extraction Classification and recognition

Influence of t-ZrO_2 addition on mechanical property and electrical conductivity of YSZ electrolyte

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Rare Metals 2006年第z1期25卷 378-383页

作者： LU Zhixin YU Yanwen guo Ruisong li Hailong guo qian School of Metallurgy and Zoology Engineering University of Science and Technology Beijing Beijing 100083 China Baosteel Iron & Steel Co. Ltd. Shanghai 200941 China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin University Tianjin 300072 China Baosteel Iron & Steel Co. Ltd. Shanghai 200941 China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin University Tianjin 300072 China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin University Tianjin 300072 China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin University Tianjin 300072 China

8YSZ material that has high electrical conductivity is widely used as electrolytes for solid oxide fuel cells (SOFCs). But its low strength and low fracture toughness hampered the development of SOFCs. In order to find a best method to improve the capability of YSZ electrolyte, the effects of 3Y-TZP additive on the density, strength, conductivity and microstructure were studied by means of X-ray diffraction and Vicker′s hardness apparatus. The strength and conductivity of YSZ electrolyte doped with different amounts of 3Y-TZP were determined. It is shown that the samples sintered at 1450 ℃ for 2 h are the best in properties. When 3Y-TZP powders are added to the YSZ system, the results demonstrate that strength of the electrolyte increases remarkably, and the fracture toughness is improved. The electrical conductivity is lowered only slightly. The results display that the flexural strength and the fracture toughness of ceramics with 30wt.% TZP reach 300 MPa and 3.7 MPa·m1/2, respectively, and the conductivity at 1000 ℃ reaches 0.11 S·cm-1.

关键词： YSZ Y-TZP mechanical property electrical conductivity

Tsai Chiao:The founder of physiology and aviation,aerospace and navigation medicine in China

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Protein & Cell 2022年第11期13卷 779-784页

作者： Yalan Wang Zijian li Yanyan qian Benyu guo Psychology College Nanjing Normal UniversityNanjing 210097China Social and Behavioural Sciences Faculty Leiden University2333 AK LeidenNetherlands

On February 16th,2019,Tsai Academician Museum held a launch ceremony of a minor planet(207681)'s settling in Jieyang County,Guangdong *** minor planet was given a new name Cai Qiao(Fig.1)on October 14th,*** Qiao was discovered at Xu Yi Station in the Purple Hills Observatory of the Chinese Academy of Sciences on August 16th,*** who is the planet named after?

关键词： Academician planet aviation

Tunable perpendicular anisotropic magnetoresistance in CoO/Co/Pt heterostructures

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Rare Metals 2023年第2期42卷 579-584页

作者： qian-qian liu Guang Yang Jing-Yan Zhang guo-Nan Feng Chun Feng qian Zhan Ming-Hua li Guang-Hua Yu Department of Materials Physics and Chemistry University of Science and Technology BeijingBeijing100083China

Transport properties of magnetron-sputtered CoO/Co/Pt heterostructures were investigated by physical property measurement *** types of magnetoresistance are observed in the heterostructures,including isotropic anisotropic magnetoresistance(AMR),AMR with geometric size effect,and interfacial effect.A reversal in sign of perpendicular AMR is found in the film CoO(3 nm)/Co(3 nm)/Pt(3 nm)compared to the film CoO(3 nm)/Co(3 nm)/CoO(3 nm),which is associated with ***,perpendicular AMR is tunable in the films CoO(3 nm)/Co(3 nm)/CoO(t)/Pt(3 nm)and CoO(3 nm)/Co(3 nm)/Pt(t)/CoO(3 nm)at will,with either positive or negative value,by varying the inserting layer *** electronic structure information of the samples was measured by X-ray photoelectron spectroscopy(XPS).The spin-related transport and XPS results manifest that magnetic proximity effect,surface scattering,together with oxygen migration contribute to the tunable function of Pt.

关键词： Perpendicular anisotropic magnetoresistance Magnetic proximity effect Surface scattering X-ray photoelectron spectroscopy

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自激式混合原子自旋振荡器的实验研究

原子与分子物理学报 2025年第4期42卷 108-112页

作者：马千金李二伟刘国宾中国科学院国家授时中心西安710600 中国科学院大学北京100049

基于碱金属-惰性气体混合自旋体系的原子共磁力计被广泛应用于寻找新相互作用、暗物质粒子等基础物理研究,以及惯性导航与生物磁探测等现实应用领域.基于Rb-Xe原子共磁力计,我们实现了一种自激式的混合原子自旋振荡器.其原理是在z轴方... 详细信息

基于碱金属-惰性气体混合自旋体系的原子共磁力计被广泛应用于寻找新相互作用、暗物质粒子等基础物理研究,以及惯性导航与生物磁探测等现实应用领域.基于Rb-Xe原子共磁力计,我们实现了一种自激式的混合原子自旋振荡器.其原理是在z轴方向上使用圆偏振光将碱金属原子极化,碱金属与惰性气体原子在高温下发生碰撞,进而将惰性气体的核自旋极化.当外磁场存在时,核自旋磁矩将在磁力矩的作用下以拉莫尔频率绕外磁场进动.在x方向上使用线偏振光进行探测,可得到原子自旋振荡信号,通过将光检信号放大、滤波、移相再施加到横向激励磁场线圈上,产生的交变磁场同步驱动核自旋进动,实现闭环自激的原子自旋无衰减振荡信号.本文从实验角度研究了该自旋振荡器的开环频率响应特性,及闭环状态下的自旋振荡频率移动随增益、相位参数变化的关系.实验结果与前期理论预期基本符合,并为提高该振荡器的频率稳定性提供重要参考.

关键词：原子自旋振荡器频移增益相位

Portal hypertension in a patient with biliary hamartomas: A case report

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World Journal of Clinical Cases 2020年第9期8卷 1745-1751页

作者： qian-qian li Xiao-Zhong guo Hong-Yu li Xing-Shun Qi Department of Gastroenterology General Hospital of Northern Theater CommandShenyang 110840Liaoning ProvinceChina Postgraduate College Dalian Medical UniversityDalian 116044Liaoning ProvinceChina

BACKGROUND Biliary hamartomas(BH)are a rare benign disease caused by malformation of the intrahepatic bile *** are occasionally diagnosed,but often lack obvious clinical *** are usually diagnosed by biopsy and imaging tests in clinical *** studies have reported the association of BH with portal *** SUMMARY A 40-year-old man was repeatedly admitted to our hospital due to *** source of bleeding was considered to be gastroesophageal varices and portal hypertensive gastropathy by *** had no history of hepatitis virus infection,alcohol abuse,drug-induced liver injury,or autoimmune liver *** underwent magnetic resonance imaging,which showed rounded,irregular,low-signal-T1 and high-signal-T2 lesions diffusely distributed on the liver,that were not communicated with the biliary system on magnetic resonance *** to the imaging examination,the patient was considered to have a diagnosis of BH with portal *** Based on the present case report,BH may be a potential etiology of portal hypertension.

关键词： Biliary hamartomas Portal hypertension Variceal bleeding Computed tomography Magnetic resonance imaging Case report