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UranyI Phosphonates with Multiple UranyI Coordination Geometries and Low Temperature Phase Transition

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Chinese Journal of Chemistry 2021年第3期39卷 597-604页

作者： Lanhua Chen Yugang Zhang Zhehui Weng Zhiyong Liu Jiarong Zhang yaxing wang Shuao wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences(RAD-X)and Collabora-tive Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhouJiangsu 215123China Department of Chemical Science and Technology Kunming UniversityYunnanKunming 650214China

Main observation and conclusion Two new uranium(VI)phosphonate compounds,namely K_(8)[N(C_(2)H_(5))_(4)]_(2)(UO_(2))_(17)(H_(2)O)_(4)[CH_(2)(PO_(3))_(2)]_(8)[CH_(2)(PO_(3))(PO_(3)H)]_(4)·16(H_(2)O)(1)and[N(C_(2)H_(5))_(4)]_(4)(H_(3)O)_(2)(UO_(2))_(10)[CH_(2)(PO_(3))_(2)]_(5)[CH_(2)(PO_(3))(PO_(3)H)]_(2)·10H_(2)O(2),have been synthesized under mild hydro/solvothermal *** structural analysis of the two compounds reveals that they both contain all three typical coordination geometries of the U(VI)ions,including UO;tetragonal,UO,pentagonal,and UOg hexagonal ***,compound 1 displays a tempera-ture-induced single crystal to single crystal phase transformation as confirmed by the Single-crystal X-ray diffraction data collected at different ***-dependent fluorescence spectra presented herein illustrate the perturbation of the electronic structure of uranyl centers.

关键词： Uranium(VI)Phosphonate compounds Multiple coordination geometries Low temperature phase transition Coordination chemistry Fluorescence spectroscopy

Guided-YNet: Saliency Feature-Guided Interactive Feature Enhancement Lung Tumor Segmentation Network

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Computers, Materials & Continua 2024年第9期80卷 4813-4832页

作者： Tao Zhou Yunfeng Pan Huiling Lu Pei Dang Yujie Guo yaxing wang School of Computer Science and Engineering North Minzu UniversityYinchuan750021China School of Medical Information&Engineering Ningxia Medical UniversityYinchuan750004China Key Laboratory of Image and Graphics Intelligent Processing of State Ethnic Affairs Commission NorthMinzuUniversityYinchuan750021China

Multimodal lung tumor medical images can provide anatomical and functional information for the same *** as Positron Emission Computed Tomography(PET),Computed Tomography(CT),and *** to utilize the lesion anatomical and functional information effectively and improve the network segmentation performance are key *** solve the problem,the Saliency Feature-Guided Interactive Feature Enhancement Lung Tumor Segmentation Network(Guide-YNet)is proposed in this ***,a double-encoder single-decoder U-Net is used as the backbone in this model,a single-coder single-decoder U-Net is used to generate the saliency guided feature using PET image and transmit it into the skip connection of the backbone,and the high sensitivity of PET images to tumors is used to guide the network to accurately locate ***,a Cross Scale Feature Enhancement Module(CSFEM)is designed to extract multi-scale fusion features after ***,a Cross-Layer Interactive Feature Enhancement Module(CIFEM)is designed in the encoder to enhance the spatial position information and semantic ***,a Cross-Dimension Cross-Layer Feature Enhancement Module(CCFEM)is proposed in the decoder,which effectively extractsmultimodal image features through global attention and multi-dimension local *** proposed method is verified on the lung multimodal medical image datasets,and the results showthat theMean Intersection overUnion(MIoU),Accuracy(Acc),Dice Similarity Coefficient(Dice),Volumetric overlap error(Voe),Relative volume difference(Rvd)of the proposed method on lung lesion segmentation are 87.27%,93.08%,97.77%,95.92%,89.28%,and 88.68%,*** is of great significance for computer-aided diagnosis.

关键词： Medical image segmentation U-Net saliency feature guidance cross-modal feature enhancement cross-dimension feature enhancement

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轴承故障声发射信号的涡旋聚焦传输方法

中国机械工程 2025年第1期36卷 78-86页

作者：吴冠武吴立群王洪成王亚星郭金帅张正吴佳欣李亮亮杭州电子科技大学机械工程学院杭州310018

针对滚动轴承内部供电及电信号传输难题,研究了基于声发射的轴承智能感知技术。首先,基于故障轴承转动振动特性构建声信号时序相差涡旋传输模型。然后,设计了环形中空式声超表面结构,研究了声涡旋聚焦机制及超表面透射性能,并仿真分析... 详细信息

针对滚动轴承内部供电及电信号传输难题,研究了基于声发射的轴承智能感知技术。首先,基于故障轴承转动振动特性构建声信号时序相差涡旋传输模型。然后,设计了环形中空式声超表面结构,研究了声涡旋聚焦机制及超表面透射性能,并仿真分析了故障类型与声场涡旋拓扑荷数的关联关系。最后,通过故障轴承的模拟与试验装置验证了轴承故障声发射信号的涡旋聚焦传输方法。

关键词：声涡旋聚焦时序相差模型环形超表面智能轴承声发射信号

A uranyl based coordination polymer showing response to low-dosage ionizing radiations down to 10^(−5) Gy

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Science China Chemistry 2020年第11期63卷 1608-1612页

作者： Jian Xie yaxing wang Wei Liu Chengyu Liang Yugang Zhang Lanhua Chen Daopeng Sheng Zhifang Chai Shuao wang School for Radiological and Interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Soochow UniversitySuzhou 215123China School of Environment and Material Engineering Yantai UniversityYantai 264005China

Radiation detection material is a central component of nuclear technology finding applications in many critical *** a highly radiation-sensitive material that shows a facilely detectable response to ultra-low dosage of radiation is a long-term research target and remains to be a *** reported most optimal chemical radiation dosimeter can detect low-dosage X-andγ-ray radiations down to 10^(−4) *** document here a new photoresponsive coordination polymer showing upgraded radiation detection capabilities with the detection limit on the radiation dose one order of magnitude lower than the previous *** radiation induced photoluminescence quenching process was elucidated by multiple spectroscopic characterizations.

关键词： uranium photoluniinescence radiation detection dosimeter

A Trivalent Americium Organic Framework with Decent Structural Stability against Self-Irradiation

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Chinese Journal of Chemistry 2022年第7期40卷 801-805页

作者： Yugang Zhang Kai Li Sida Zhang Xia wang Hailong Zhang Yanlong wang yaxing wang Zhifang Chai Shuao wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySoochowJiangsu 215123China

We reported the synthesis,single crystal structure,and solid-state UV-Vis-NIR spectroscopy of a new transplutonium metal-organic framework(MOFs),Am(H_(2)O)[PO[(C6H4)COO]_(3)],denoted as AmTPO(TPO=tris(4-carboxylphenyl)-phosphineoxide).AmTPO forms a three-dimensional metal-organic framework structure with americium dimers as the secondary building *** 5f→5f transi-tions attributed to trivalent americium was observed in the absorption spectrum of AmTPO ranging from 300 to 1200 ***,AmTPO can maintain the crystallinity with no observable structural degradation within several months after being synthesized,re-vealing a long-term radiation resistance of this structure and the potential application of MOFs as a platform for nuclear waste dis-posal.

关键词： Metal-organic Frameworks Transplutonium Americium Radiochemistry Actinides

Benefit-based cost allocation for residentially distributed photovoltaic systems in China:A cooperative game theory approach

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Frontiers of Engineering Management 2021年第2期8卷 271-283页

作者： Xi LUO Xiaojun LIU Yanfeng LIU Jiaping LIU yaxing wang School of Building Services Science and Engineering Xi'an University of Architecture and TechnologyXi'an 710055China School of Management Xi'an University of Architecture and TechnologyXi'an 710055China School of Architecture Xi'an University of Architecture and TechnologyXi’an 710055China

Distributed photovoltaic(PV)systems have constantly been the key to achieve a low-carbon economy in ***,the development of Chinese distributed PV systems has failed to meet expectations because of their irrational profit and cost *** this study,the methodology for calculating the levelized cost of energy(LCOE)for PV is thoroughly discussed to address this issue.A mixed-integer linear programming model is built to determine the optimal system operation strategy with a benefit *** externality-corrected mathematical model based on Shapley value is established to allocate the cost of distributed PV systems in 15 Chinese cities between the government,utility grid and *** show that(i)an inverse relationship exists between the LCOEs and solar radiation levels;(ii)the government and residents gain extra benefits from the utility grid through net metering policies,and the utility grid should be the highly subsidized participant;(iii)the percentage of cost assigned to the utility grid and government should increase with the expansion of battery bank to weaken the impact of demand response on increasing theoretical subsidies;and(iv)apart from the LCOE,the local residential electricity prices remarkably impact the subsidy calculation results.

关键词： solar photovoltaic cost allocation cooperative game theory Shapley value mixed-integer linear programming levelized cost of energy

A Tetravalent Plutonium Organic Framework Containing[Pu_(2)O_(16)]Dimers as Secondary Building Units:Synthesis,Structure,and Radiation Stability

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Chinese Journal of Chemistry 2023年第13期41卷 1552-1556页

作者： Yugang Zhang Yingzhe Du Lili Li Ye Tao Kai Li Hailong Zhang Yanlong wang Lanhua Chen yaxing wang Zhifang Chai Shuao wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhouJiangsu215123 China China Nuclear Power Technology Research Institute Co. Ltd.ShenzhenGuangdong518028 China

The second example of tetravalent plutonium carboxyl-based organic framework,^(242)Pu(OH)[PO[(C_(6)H_(4))COO]_(3)]·H_(2)O,termed as PuTPO(TPO=tris(4-carboxylphenyl)-phosphineoxide),was reported in this work.A series of characterizations of PuTPO,such as X-ray crystallography and solid-state UV-Vis-NIR spectroscopy,were carried out to expatiate its structure and physicochemical *** is constructed by dimers of the plutonium-oxygen subunit of[Pu_(2)O_(16)].Characteristic peaks located at approximately 1100 nm can be considered to be the fingerprint peaks of tetravalent *** PuTPO can maintain high crystallinity within several months after synthesis,it exhibits a radiation-induced swelling effect probed by the expansion of cell parameter of b axis after self-irradiation fromα-decay of ^(242)*** result enriches the inventory of tetravalent plutonium compounds and provides an insight into the irradiation resistance of metal-organic frameworks.

关键词： Metal-organic frameworks Plutonium Actinides Crystal structure Coordination chemistry

Efficient separation between trivalent americium and lanthanides enabled by a phenanthroline-based polymeric organic framework

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Chinese Chemical Letters 2022年第7期33卷 3429-3434页

作者： Afshin Khayambashi Long Chen Xue Dong Kai Li Zhipeng wang Linwei He Suresh Annam Lixi Chen yaxing wang Matthew V.Sheridan Chao Xu Shuao wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

Separation of the minor actinides(Am and Cm)from lanthanides in high-level liquid wastes(HLLW)is one of the most challenging chemical separation tasks known owing to their chemical similarities and is highly significant in nuclear fuel reprocessing plants because it could practically lead to sustainable nuclear energy by closing the nuclear fuel *** solid phase extraction is proposed to be a possible strategy but all reported sorbent materials severely suffer from limited stability and/or efficiency caused by the harsh conditions of high acidity coupled with intense ***,a phenanthroline-based polymeric organic framework(PhenTAPB-POF)was designed and tested for the separation of trivalent americium from lanthanides for the first *** to its fully conjugated structure,PhenTAPB-POF exhibits previously unachieved stability under the combined extreme conditions of strong acids and high irradiation *** americium partitioning experiment indicates that PhenTAPB-POF possesses an ultrahigh adsorption selectivity towards Am(Ⅲ)over lanthanides(e.g.,SFAm(Ⅲ)/Eu(Ⅲ)=3326)in highly acidic simulated HLLW and relatively fast adsorption kinetics in both static and dynamic ***(Ⅲ)can be almost quantitatively eluted from the PhenTAPB-POF packed-column using a concentrated nitric acid *** high stability and superior separation performance endow PhenTAPB-POF with the promising alternative for separating minor actinides over lanthanides from highly acidic HLLW streams.

关键词： Porous organic framework Americium Lanthanides Separation Stability

Competing Crystallization between Lanthanide and Actinide in Acidic Solution Leading to Their Efficient Separation

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Chinese Journal of Chemistry 2019年第1期37卷 53-57页

作者： Xuemiao Yin yaxing wang Xiaoyan Li Jian Xie Mark A.Silver Lanhua Chen Daopeng Sheng Guoxun Ji Zhifang Chai Shuao wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences (RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow University199 Ren'ai RoadSuzhou.liangsu 215123China Xi'an Research Institute of High Technology Hong Qing TownXi'anShaanxi 710025China

Summary of main observation and conclusion We present a new method for generating europium oxalate compounds by decomposing of N-methyl 2-pyrrolidone in HNO3 *** reaction exhibits high selectivity towards Eu^3+ over UO2^2+,which suggests that these conditions could be applied to a selective crystallization based separation system for trivalent lanthanides and hexavalent actinides.

关键词： method system actinides