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Enhancement in the Hg^(0) oxidation efficiency and sulfur resistance of CuCl_(2)-modified MnO_(x)-CeO_(x) nanorod catalysts

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2024年第8期25卷 680-686页

作者： Shujie GAO Yongjin hu Zhichang JIANG xiaoxiang WANG Dong YE Changxing hu College of Quality&Safety Engineering China Jiliang UniversityHangzhou 310018China Key Laboratory of Biomass Chemical Engineering of Ministry of Education Institute of Industrial Ecology and EnvironmentCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China School of Mechatronics and Energy Engineering Ningbo Tech UniversityNingbo 315100China

In this study,a series of CuCl_(2)-modified MnO_(x)-CeO_(x)nanorods were synthesized for the oxidation of Hg^(0).The addition of CuCl_(2)resulted in an enhancement in the catalyst’s Hg^(0)oxidation ability,and Hg^(0)oxidation efficiency reached>97%from 150 to 250°*** the MnO_(x)-CeO_(x)catalysts,Mn^(4+)played the role of the active species for Hg^(0)oxidization,but in the CuCl_(2)-doped catalysts Cl−also contributed to Hg^(0)oxidation,conferring the superior performance of these *** introduction of SO_(2) led to a decrease in the availability of Mn^(4+),and the Hg^(0)oxidation efficiency of MnO_(x)-CeO_(x)decreased from about 100%to about 78%.By contrast,CuCl_(2)-promoted samples maintained a Hg^(0)oxidation efficiency of about 100%during the SO_(2) deactivation cycle due to the high reactivity of Cl−.

关键词： Hg^(0)oxidation CuCl_(2)modification MnO_(x)-CeO_(x)nanorods Sulfur resistance O_(x)idation activity

Mechanistic investigation on the Hg^(0)elimination ability of MnO_(x)-CeO_(x)nanorod adsorbents:effects of Mn/Ce molar ratio

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Waste Disposal and Sustainable Energy 2024年第2期6卷 185-196页

作者： Shujie Gao xiaoxiang Wang Yaolin Wang Kai Zhu Changxing hu Dong Ye College of Quality and Safety Engineering China Jiliang UniversityHangzhou 310018China Key Laboratory of Biomass Chemical Engineering of Ministry of Education Institute of Industrial Ecology and EnvironmentCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Department of Electrical Engineering and Electronics University of LiverpoolLiverpool L693GJUK Ningbo Tech University No.1 Qianhu South RoadNingbo 315100China

Mercury pollution is created by coal combustion processes in multi-component *** injection was identified as a potential strategy for capturing Hg^(0)from waste gases,with adsorbents serving as the primary *** hydro-thermal approach was used to synthesize a series of MnO_(x)-CeO_(x)nanorod adsorbents with varying Mn/Ce molar ratios to maximize the Hg^(0)capture *** CeO,had weak Hg elimination activity;<8%Hg^(0)removal efficiency was obtained from 150℃to 250℃.With the addition of MnOr,the amount of surface acid sites and the relative concentration of Mn4+*** ensured the sufficient adsorption and oxidation of Hg while overcoming the limitations of restricted adsorbate-adsorbent interactions caused by the lower surface area,endowing MnO_(x)-CeO_(x)with increased Hg^(0)removal *** the molar ratio of Mn/Ce reached 6/4,the adsorbent's Hg^(0)removal efficiency remained over 92%at 150℃and 200℃.As the molar ratio of Mn/Ce grew,the adsorbent's Hg^(0)elimination capacity declined due to decreased surface area,weakened acidity,and decreased activity of Mn^(4+);<75%Hg^(0)removal efficiency was reached between 150℃and 250℃for virgin *** the overall Hg'elimination reactions,Mn4+and *** in charge of oxidizing Hg^(0)to Hg^(0),with Ce^(4+)acting as a promoter to aid in the regeneration of Mn^(4+),Because of its limited adaptability to flue gas components,further optimization of the MnO_(x)-CeO_(x)nanorod adsorbent is required.

关键词： Hg^(0)capture MnO_(x)-CeO_(x)nanorods Mn/Ce molar ratio Acid properties Redox behaviors

Prevention and treatment of gerbil hepatitis E using the programmable CRISPR-Cas13d system

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Genes & Diseases 2024年第4期11卷 94-97页

作者： Chengcheng Zhao Chong Lia Sa Li Hanyu Wu Pengyao Ren Tianlong Liu xiaoxiang.hu Ran Zhang State Key Laboratory of Animal Biotech Breeding College of Biological SciencesChina Agricultural UniversityBeijing 100193China Laboratory of Veterinary Pathology and Nanopathology College of Veterinary MedicineChina Agricultural UniversityBeijing 100193China

In recent years,the global incidence of hepatitis E virus(HEV)has been rising,leading to increased morbidity and mortality associated with ***13,a CRISPR effector,shows promise as an antiviral agent against singlestranded RNA ***13d,a type VI-D effector,exhibits higher efficiency in suppressing RNA viruses compared to other type VI ***,its in vivo activity against RNA viruses in mammals remains unknown.

关键词： mortality hepatitis treatment

Pressure-induced color change arising from transformation between intra-and inter-band transitions in LuH_(2±x)N_(y)

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Science China(Physics,Mechanics & Astronomy) 2024年第2期67卷 161-166页

作者： Zhe Liu Yingjie Zhang Shenyang huang Xue Ming Qing Li Chenghao Pan Yaomin Dai xiaoxiang Zhou Xiyu Zhu hugen Yan Hai-hu Wen Center for Superconducting Physics and Materials National Laboratory of Solid State Microstructures and Department of PhysicsNational Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China State Key Laboratory of Surface Physics Key Laboratory of Micro and Nano-Photonic Structures of the Ministry of EducationDepartment of PhysicsFudan UniversityShanghai 200433China

The pressure-induced color change in the nitrogen-doped lutetium hydride has triggered extensive discussions about the underlying physics and potential ***,we study the optical response of LuH_(2±x)N_(y)in a broad frequency range at ambient pressure and its evolution with pressure in the visible spectral *** broad-band optical spectra at ambient pressure reveal a Drude component associated with intra-band electronic transitions and two Lorentz components(L1 and L2)arising from inter-band electronic *** application of pressure causes a spectral weight transfer from L1 to the Drude component,leading to a blue shift of the plasma edge in the reflectivity spectrum alongside a reduction of the high-frequency *** results suggest that the pressure-induced color change in LuH_(2±x)N_(y)is closely related to the transformation between intra-and inter-band electronic transitions,providing new insights into the mechanism of the pressure-induced color change in LuH_(2±x)N_(y).

关键词： nitrogen-doped lutetium hydride optical spectroscopy high-pressure technique color change

Intelligent diagnosis of atrial septal defect in children using echocardiography with deep learning

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虚拟现实与智能硬件（中英文） 2024年第3期6卷 217-225页

作者： Yiman LIU Size HOU xiaoxiang HAN Tongtong LIANG Menghan hu Xin WANG Wei GU Yuqi ZHANG Qingli LI Jiangang CHEN Shanghai Key Laboratory of Multidimensional Information Processing School of Communication&Electronic EngineeringEast China Normal UniversityShanghaiChina Department of Pediatric Cardiology Shanghai Children's Medical CenterSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina Department of Applied Mathematics Xi'an Jiaotong-Liverpool UniversitySchool of ScienceSuzhouChina School of Health Sciences and Engineering University of Shanghai for Science and TechnologyShanghaiChina Minhang District Centers for Disease Control and Prevention ShanghaiChina Faculty of Traditional Chinese Medicine Naval Medical UniversityShanghaiChina Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation Ministry of EducationShanghai 201203China

Background Atrial septal defect(ASD)is one of the most common congenital heart *** diagnosis of ASD via transthoracic echocardiography is subjective and *** The objective of this study was to evaluate the feasibility and accuracy of automatic detection of ASD in children based on color Doppler echocardiographic static images using end-to-end convolutional neural *** proposed depthwise separable convolution model identifies ASDs with static color Doppler images in a standard *** the standard views,we selected two echocardiographic views,i.e.,the subcostal sagittal view of the atrium septum and the low parasternal four-chamber *** developed ASD detection system was validated using a training set consisting of 396 echocardiographic images corresponding to 198 ***,an independent test dataset of 112 images corresponding to 56 cases was used,including 101 cases with ASDs and 153 cases with normal *** The average area under the receiver operating characteristic curve,recall,precision,specificity,F1-score,and accuracy of the proposed ASD detection model were 91.99,80.00,82.22,87.50,79.57,and 83.04,*** The proposed model can accurately and automatically identify ASD,providing a strong foundation for the intelligent diagnosis of congenital heart diseases.

关键词： Deep learning Atrial septal defect Echocardiography

Microstructure Modification and Ductility Improvement for TaMoNbZrTiAl Refractory High Entropy Alloys via Increasing Ti Content

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Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1186-1200页

作者： Yujing Zhou Siyi Peng Yueling Guo xiaoxiang Wu Changmeng Liu Zhiming Li School of Mechanical Engineering Beijing Institute of TechnologyBeijing100081China Shagang School of Iron and Steel Soochow UniversitySuzhou215137China School of Materials Science and Engineering Central South UniversityChangsha410083China

Here, the composition of TaMoNbZrTiAl refractory high entropy alloy (RHEA) is optimized by increasing Ti content to improve its mechanical property especially the ductility, through comparing two RHEAs with different Ti content. The RHEAs contain two body-centered-cubic (BCC) phases. The BCC phase in the dendritic region is rich in Ta, Mo and Nb, and the BCC phase in the interdendritic region is enriched in Zr, Ti and Al. The as-cast RHEA with a higher Ti content remains dendritic microstructures, and Ti is mainly enriched in the interdendritic region. After annealing treatment at 1300 ℃ for 48 h, the dendritic microstructures change into equiaxed-grain morphology, accompanied by needle-like micron precipitates at grain boundaries in the RHEA with higher Ti content. For the as-cast RHEAs, the fracture strain increases by ~ 6.6% and the uniform plastic strain increases by ~ 5.9% at the compression test due to the increase of Ti content. Our work offers a reference for the composition design of RHEAs and makes a preliminary exploration of the optimization of the microstructures and mechanical properties.

关键词： Refractory high entropy alloys Solidification Grain morphology Microstructure Mechanical property

中国儿童文学在英语世界的传播效果研究:基于网站读者书评的考察

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外国语 2024年第1期47卷 116-126页

作者：龙晓翔胡牧南京师范大学外国语学院江苏南京210024 长沙理工大学外国语学院湖南长沙410076

为了从读者视角考察新世纪中国儿童文学英语译介作品的传播效果,本文运用数字人文研究方法,通过Python收集海外网站上读者评论并进行了定量和定性研究。研究发现:其一,海外读者评论主要集中在《青铜葵花》和《马燕日记》两部作品上。其... 详细信息

为了从读者视角考察新世纪中国儿童文学英语译介作品的传播效果,本文运用数字人文研究方法,通过Python收集海外网站上读者评论并进行了定量和定性研究。研究发现:其一,海外读者评论主要集中在《青铜葵花》和《马燕日记》两部作品上。其二,包含家庭、教育、爱等全球性永恒主题的作品较易获得读者共鸣;而叙事性、价值观及写作技巧等也是读者的兴趣所在。其三,译者越来越“显形”。翻译在跨文化传播上的价值与重要性日益受到读者关注。基于上述数据分析,从必然与偶然、题材与内容、作者与译者三个角度探析了两部作品成功的原因,并从创作、翻译及传播等层面为中国儿童文学译介提出建议。

关键词：中国儿童文学英语译介读者评论传播效果数字人文

高效液相色谱法同时测定银花平感颗粒中10种成分的含量

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中药新药与临床药理 2024年第5期35卷 719-724页

作者：何艳胡小祥王继威张辉湘南学院药学院湖南郴州423099 湘南学院附属医院湖南郴州423000 郴州市食品药品检验检测中心湖南郴州423000

目的建立高效液相色谱(HPLC)法同时测定银花平感颗粒中新绿原酸、绿原酸、隐绿原酸、葛根素、虎杖苷、异绿原酸A、异绿原酸C、白藜芦醇、甘草酸和大黄素10种成分含量的方法。方法采用Thermo Acclaim-C_(18)色谱柱(250mm×4.6mm,5μm),... 详细信息

目的建立高效液相色谱(HPLC)法同时测定银花平感颗粒中新绿原酸、绿原酸、隐绿原酸、葛根素、虎杖苷、异绿原酸A、异绿原酸C、白藜芦醇、甘草酸和大黄素10种成分含量的方法。方法采用Thermo Acclaim-C_(18)色谱柱(250mm×4.6mm,5μm),以乙腈-0.1%磷酸水溶液为流动相进行梯度洗脱,流速:1.0mL·min^(-1),采用327 nm(新绿原酸、绿原酸、隐绿原酸、虎杖苷、异绿原酸A、异绿原酸C、白藜芦醇)和252 nm(葛根素、甘草酸、大黄素)作为检测波长,柱温:30℃,进样量:10μL。结果银花平感颗粒中10种成分分离度良好,新绿原酸、绿原酸、隐绿原酸、葛根素、虎杖苷、异绿原酸A、异绿原酸C、白藜芦醇、甘草酸和大黄素的线性范围分别为1.744~17.44、10.75~107.5、1.863~18.63、14.62~146.2、4.784~47.84、1.208~12.08、4.427~44.27、1.971~19.71、3.624~36.24和4.142~41.42μg·mL-1,线性关系良好(r≥0.9994);平均加样回收率在99.17%~102.97%之间(RSD≤2.65%)。5批样品中上述10个成分含量范围依次分别为1.065~3.238、20.11~25.14、1.785~2.973、23.60~35.55、7.157~9.469、1.224~2.421、6.430~7.879、1.354~2.006、4.907~8.052、4.387~9.484 mg·g^(-1)。结论所建立的方法简单准确,可用于银花平感颗粒的质量控制与评价。

关键词：银花平感颗粒高效液相色谱法化学成分含量测定质量控制

铰接支撑双重抗侧框架及其弹塑性抗侧性能研究

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天津大学学报（自然科学与工程技术版） 2024年第4期57卷 343-354页

作者：余玉洁韦权飞王霄翔胡婉颖中南大学土木工程学院长沙410075 湖南建设投资集团有限责任公司长沙410004 湖南建工集团有限公司长沙410004

基于现有分层装配柔性支撑框架,提出改进的铰接支撑双重抗震改进型轻钢框架体系.外墙转角或边墙处采用贯通式边柱,结构内部采用柱分层、梁贯通式结构设计.内部分层立柱之间设置柔性交叉支撑提供结构的初始抗侧刚度,贯通式边柱与水平贯... 详细信息

基于现有分层装配柔性支撑框架,提出改进的铰接支撑双重抗震改进型轻钢框架体系.外墙转角或边墙处采用贯通式边柱,结构内部采用柱分层、梁贯通式结构设计.内部分层立柱之间设置柔性交叉支撑提供结构的初始抗侧刚度,贯通式边柱与水平贯通梁刚性或半刚性连接形成外围框架,提供后继抗侧储备并形成第2道抗侧防线.采用理论分析方法得到改进型框架梁、柱、支撑等构件初步设计方法,并基于Pushover分析改进型框架弹塑性抗侧承载性能和关键结构参数影响规律.该结构传力机制清晰,具备多重抗侧承载机制,并可基于结构力学方法有效得到结构设计准则.柔性支撑在距边柱一定距离后其位置变化不影响结构抗侧承载性能.内部分层立柱节点刚度对结构抗侧性能影响较小,实际设计中可采用全螺栓连接或限位铰接.边框梁柱连接刚度将影响外围框架刚度和结构失效机制,实际设计中宜采用加劲型螺栓连接以保证有足够的抗弯刚度.体系中各节点均可在保障结构性能条件下采用螺栓连接以实现全装配化建造.

关键词：铰接支撑双重抗侧框架装配化建造抗侧性能受力分析 Pushover分析