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Recent progress of radionuclides separation by porous materials

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Science China Chemistry 2024年

作者： yinghui xie Long Yu Long Chen Cheng Chen Li Wang Fenglei Liu Yun Liao Peng Zhang Tao Chen Yihui Yuan Yuexiang Lu Boyang Huang Hui Yang Suhua Wang Shuao Wang Lijian Ma Feng Luo Yunhai Liu Baowei Hu Hongqing Wang Duoqiang Pan Wenkun Zhu Ning Wang Zhe Wang Liang Mao Shengqian Ma Xiangke Wang State Key Laboratory of Marine Resource Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology Hainan University Institute of Nuclear and New Energy Technology Tsinghua University State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Department of Chemistry University of North TexasDenton Guangdong Provincial Key Laboratory for Green Agricultural Production and Intelligent Equipment School of Environmental Science and Engineering Guangdong University of Petrochemical Technology School of Life Science Shaoxing University College of Environmental Science and Engineering North China Electric Power University 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 Institutions Soochow University College of Chemistry Sichuan University School of Chemistry and Materials Science East China University of Technology School of Chemistry and Chemical Engineering University of South China Frontiers Science Center for Rare Isotopes Lanzhou University State Key Laboratory of Environment-friendly Energy Materials National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety Sichuan Civil-military Integration Institute School of National Defence & Nuclear Science and TechnologySouthwest University of Science and Technology

The separation of radionuclides is critical for the sustainable development of nuclear energy. It is urgent to design and prepare functionalized materials for efficient radionuclides separation. Porous materials are considered excellent candidates for the separation of radionuclides under complex conditions due to their high specific surface areas, tunable pore structures and controllable functionalities. In this review, we summarized the design, preparation and functionalization of porous materials and their application for separation of radionuclides in the past five years, discussed the separation performance and analyzed the structure-activity relationship between various radionuclides and porous materials, and systematically clarified their characterization and mechanism of different type porous materials. We also introduced the detection, irradiation and chemical toxicity of different reflective radionuclides.

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联合优化无人机位置和功率的用户吞吐量最大化方法

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宇航计测技术 2024年第3期44卷 82-88页

作者：陈丹杨洪朝谢英辉长沙民政职业技术学院长沙410004

因移动便捷、高视距通信概率等优势,无人机(Unmanned Aerial Vehicle,UAV)在应急通信中发挥重要作用。为此,提出联合优化UAVs位置和传输功率的吞吐量最大化(Joint optimization of UAV 3-D Position and Transmit powers for throughput Maximization,JPTM)方法,进而提高地面用户的吞吐量。先构建一个联合UAVs三维位置和传输功率的优化问题。考虑到该问题的非凸优化性,将其分解为两个子问题。用Mean-Shift算法求解第一个问题,获取最优的UAVs水平位置。采用分而治之策略,将第二个子问题再分解,并利用一阶泰勒级数展开对两个子问题进行近似处理,形成标准凸化问题,然后利用CVX工具求解。性能分析表明,相比于基于圆形堆积理论部署UAVs策略(Circle Packing Theorem-based Deployment,CPTD)和基于多变量仿真的能效UAVs部署策略(Energy-Efficient Variable simultaneous Deployment,EEVD)算法,JPTM算法提高了地面用户的吞吐量。

关键词：无人机通信三维位置部署传输功率优化 Mean-Shift算法一阶泰勒级数展开

Contaminations of Heavy Metals in Surface Soils of Various Lands and Their Health Risks in Tianjin Qilihai Ancient Lagoon Wetlands,China

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湿地科学 2016年第5期14卷 700-709页

作者： XIANG Lixiong xie Zhenglei DU Zebing JIANG yinghui xie Chao LONG Ting School of Geography & Environmental Jiangxi Normal University Nanchang 330022 Jiangxi P.R.China Key Laboratory of Education Ministry for Poyang Lake Wetland & Watershed Research Nanchang 330022 Jiangxi P.R.China

A total of 36 surface soil profiles were set at the wetlands in Qilihai Ancient Lagoon Wetlands,Tianjin,the surface soils of 0-20 cm depth were sampled at various use types of lands to provide information on the concentrations of heavy metals in the coastal *** concentrations of arsenic(As),cadmium(Cd),copper(Cu),lead(Pb),chromium(Cr)and zinc(Zn)were determined using inductively coupled plasma atomic absorption spectrometry(ICP-AES)to address the pollution levels in the sampling *** results showed that the concentrations of Cd,Cu in the soils disturbed by human activities intensively,the Phragmites australis marshes,the farmland,the brushes decreased in turn;among the sites,the concentrations of As,Cd and Cu were the highest in the soil of build-up areas,while the concentrations of Pb and Zn were the higher in the soil of *** mean concentrations of Cu,Cr,Cd,Pb,Zn and As in the soils of 0-20 cm depth were 38.74 mg/kg,83.52 mg/kg,0.19 mg/kg,34.27 mg/kg,121.7 mg/kg and 18.77 mg/kg,*** contamination indices of As were on the high pollution level in the soils of farmland and disturbed by human activities intensively;the concentrations of Cd in the soils of the marshes and farmland were at the moderate pollution level,while that in the soil disturbed by human activities intensively was at high pollution *** values of comprehensive contamination index demonstrated that the variation of As contents was the maximum in the soils,Cd pollution reached to a high *** index showed that As pollution was at moderate level,and Cd,Cu and Zn pollution were at slight level,and the Pb and Cr pollution wasn't found in the build-up areas.

关键词：中国研究问题政策天津

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甲状腺结节与维生素D水平的相关性研究

首都食品与医药 2024年第2期31卷 11-13页

作者：谢盈慧丁云川梅会静周云霞吴胜亮天津市宝坻区人民医院天津301800

目的研究甲状腺结节与血清维生素D水平的相关性,为寻求甲状腺结节干预方法提供参考依据。方法分析167例体检者临床资料,根据甲状腺超声结果分为结节组(n=68)和对照组(n=99),比较两组生化指标及维生素D缺乏患病率,分析维生素D缺乏与甲状... 详细信息

目的研究甲状腺结节与血清维生素D水平的相关性,为寻求甲状腺结节干预方法提供参考依据。方法分析167例体检者临床资料,根据甲状腺超声结果分为结节组(n=68)和对照组(n=99),比较两组生化指标及维生素D缺乏患病率,分析维生素D缺乏与甲状腺结节发生的相关性。结果与对照组相比,结节组年龄、空腹血糖、糖化血红蛋白高于对照组(P<0.05),血清25羟基维生素D(25-hydroxyvitamin D,25(OH)D)水平低于对照组(P<0.05)。与对照组相比,结节组的高血压病和糖耐量异常患病率更高(P<0.05)。单发结节组与多发结节组相比,血25(OH)D水平差异无统计学意义。超声C-TIRADS分级3类及3类以下组与分级4类及4类以上组相比,血25(OH)D水平差异无统计学意义。二元Logistic回归分析提示年龄≥40岁、维生素D缺乏、糖调节受损为甲状腺结节发生的独立危险因素(P均<0.05)。相对于维生素D正常,维生素D缺乏致甲状腺结节发生风险增加4.931倍(95%CI 1.581-15.727,P=0.001)。结论此研究中甲状腺结节患者血清维生素D水平低于健康人群。维生素D缺乏可能是引起甲状腺结节发生的危险因素。甲状腺结节与维生素D水平的相关性有待进一步研究。

关键词：维生素D 甲状腺结节维生素D缺乏

Non-electrocardiography-gated dual-energy cardiac CT angiography for assessment of left atrial appendage thrombus

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Radiation Medicine and Protection 2024年第2期5卷 118-123页

作者： Feifei Zhang Tian Jiang Ruigang xie Jiliang Zhang Minghua Sun yinghui Ge Department of Radiology Henan Provincial People's HospitalDepartment of Radiology of Central China Fuwai HospitalCentral China Fuwai Hospital of Zhengzhou UniversityZhengzhou 450003China

Objective:To explore the diagnosis value of a low dose,dual-energy cardiac computed tomography angiography(CTA)with non-electrocardiography-gated(non-ECG-gated)in detecting left atrial appendage(IAA)***:Consecutive patients with atrial fibrillation who underwent cardiac CTA protocol(dual-energy scan for arterial phase and conventional scan for delayed phase)were prospectively *** lesions were proved by clinical comprehensive diagnosis,the final study included 18 cases with LAA thrombus and 48 cases with circulatory *** parameters derived from dual-energy images were measured for the LAA lesions,including the conventional CT attenuation value(CT value),iodine concentration(IC),normalized iodine concentration(NIC),effective atomic number values(Zeff)and energy spectrum curve slope(Slope).The differences between LAA thrombus group and circulatory stasis group were compared by independent sample t-test or Wilcoxon rank sum test regarding to the normality *** diagnosis performance of the dual-energy parameters was assessed using receiver operating characteristic(ROC)curve analysis and area under curve(AUC).Results:All the dual-energy parameters were demonstrated significantly difference between LAA thrombus and circulatory stasis group(P<0.05),and showed better diagnostic performance than the conventional CT *** analysis revealed IC was the most predictive parameter with AUC equal to *** radiation dose in the arterial phase was(2.640.66)***:Dual-energy CTA scanning shows convincing diagnostic performance in detecting left atrial appendage thrombus with lower radiation dose,and may help reduce the need for delayed phase scan.

关键词： Dual-energy computed tomography Imaging Atrial fibrillation Left atrial appendage Thrombus Circulatory stasis

Mapping of powdery mildew resistance genes transferred to common wheat from wild emmer wheat revealed three functional Pm60 haplotypes

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The Crop Journal 2024年第2期12卷 540-548页

作者： Wenxin Wei Nannan Liu Shengnan Zhang Jing Zhang Wei Pan Xiaoming xie Zuhuan Yang Junna Sun Jun Ma Zhaorong Hu Weilong Guo Qiaoling Luo Jingzhong xie Fei He yinghui Li Chaojie xie Qixin Sun Key Laboratory of Crop Heterosis and Utilization(MOE)/Key Laboratory of Crop Genetic Improvement China Agricultural UniversityBeijing 100193China Institute of Advanced Agricultural Science Peking UniversityWeifang 261200ShandongChina Institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101China Triticeae Research Institute Sichuan Agricultural UniversityChengdu 611130SichuanChina Institute of Evolution University of HaifaMt.CarmelHaifa 3498838Israel

Powdery mildew(PM),caused by Blumeria graminis ***(Bgt),is one of the destructive wheat diseases *** emmer wheat(Triticum turgidum ***,WEW),a tetraploid progenitor of common wheat,is a valuable genetic resource for wheat disease resistance breeding *** developed three hexaploid pre-breeding lines with PM resistance genes derived from three WEW *** resistant pre-breeding lines were crossed with susceptible common wheat *** in the F2populations were 3 resistant:1 susceptible,suggesting a single dominant allele in each resistant *** of the resistance gene in each line indicated a single locus on the long arm of chromosome 7A,at the approximate location of previously cloned Pm60 from *** sequencing revealed three different Pm60 haplotypes(Hap 3,Hap 5,and Hap 6).Co-segregating diagnostic markers were developed for identification and selection of each *** resistance function of each haplotype was verified by the virus-induced gene silencing(VIGS).Common wheat lines carrying each of these Pm60 haplotypes were resistant to most Bgt isolates and differences in the response arrays suggested allelic variation in response.

关键词： Alleles Blumeria graminus Marker-assisted selection Molecular marker Triticum dicoccoides

Synthesis of mordenite by solvent-free method and its application in the dimethyl ether carbonylation reaction

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Chinese Journal of Chemical Engineering 2024年第2期66卷 216-223页

作者： yinghui Liu Shaoduo Liu Xiaosheng Wang Hongjing Wang Ranjia Li Changchun Yu Chunming Xu Yuxiang Liu Zhengqiu xie Yongqiang Wang Pan Tang State Key Laboratory of Heavy Oil Processing College of New Energy and MaterialsChina University of Petroleum-BeijingBeijing 102249China Synfuels China Technology Co. LtdBeijing 101400China College of Chemical Engineering Qingdao University of Science&TechnologyQingdao 266042China Yueyang Jucheng Chemical Co. LtdYueyang 414009China

Mordenite with different Si/Al ratios were synthesized by solvent-free method and used for dimethyl ether(DME)carbonylation *** influence of Si/Al ratio in the feedstock on the structure,porosity and acid sites were systematically *** characterization results showed that with the increase of Si/Al ratio in the feedstock,part of silicon species fail to enter the skeleton and the specific surface area and pore volume of the samples *** amount of weak acid and medium strong acid decreased alongside with the increasing Si/Al ratio,and the amount of strong acid slightly *** Al atoms preferentially enter the strong acid sites in the 8 member ring(MR)channel during the crystallization *** high Si/Al ratio sample had more acid sites located in the 8 MR channel,leading to more active sites for carbonylation reaction and higher catalytic *** increasing the Si/Al ratio was beneficial for the improvement of carbonylation reaction activity over the mordenite(MOR)catalyst.

关键词： Carbonylation Dimethyl ether Solvent-free Zeolite Synthesis Catalysis

Adsorption of U(Ⅳ) onto Amidoxime-functionalized Hydrothermal Carbon in the Presence of Ca-U(Ⅳ)-CO3 Complexes

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Research and Application of Materials Science 2019年第2期1卷 39-47页

作者： yinghui xie Zhimmin DONG Haoyan ZHANG Runze ZHOU Yunhai LIU Zhibin ZHANG State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchangJiangxiChina330013

The aim is collecting uranium from groundwater in which uranium mainly exists in negative species,the amidoxime-functionalized hydrothermal carbon(AO-HTC)was *** the results of N2 adsorption-desorption and SEM,AO-HTC is a small spherical surface;FT-IR and Elemental analysis showed that the amidoxime group was successfully grafted onto the surface of the material;Zeta-potential measurement showed that the amino nitrogen atom is protonated in the oxime *** optimum pH value of AO-HTC for uranium adsorption is 6.0,and the adsorption equilibrium is reached within 80 min,which is in accordance with the pseudo-second order adsorption kinetic *** adsorption of uranium by AO-HTC accords with the Langmuir isotherm adsorption model,and the single-layer saturated adsorption capacity is 254.13mg·g^-*** thermodynamic parameters calculated by the adsorption isotherm indicate that AO-HTC adsorption of uranium is a spontaneous endothermic chemical process and Carbonate ion,calcium ion and humic acid concentration have great influence on uranium *** experiments results show that AO-HTC has the potential to elimination of U(Ⅳ)from groundwater.

关键词： uranium amidoxime hydrothermal carbon adsorption Ca-U(VI)-CO3 complexes

真空热压制备SiCf/Ti-43Al-9V复合材料微观组织及化学元素分析

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铸造技术 2014年第5期35卷 871-873页

作者：谢英辉白城医学高等专科学校吉林白城137000

通过真空压制制备了SiCf/Ti-43Al-9V复合材料,并通过X射线衍射仪、金相显微镜和能谱仪对复合材料的显微组织和化学元素进行了分析。结果表明,SiCf/Ti-43Al-9V复合材料基体组织的形成不仅与塑性变形过程中储存的应变能有关,还与界面反应... 详细信息

通过真空压制制备了SiCf/Ti-43Al-9V复合材料,并通过X射线衍射仪、金相显微镜和能谱仪对复合材料的显微组织和化学元素进行了分析。结果表明,SiCf/Ti-43Al-9V复合材料基体组织的形成不仅与塑性变形过程中储存的应变能有关,还与界面反应和化学元素有关。其中C是α相形成的稳定元素,V是B2相形成的稳定元素。

关键词：显微组织高温压制基体