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功能基团改性CeO_(2)介孔材料的制备及其吸附性能研究

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广州化工 2024年第6期52卷 110-114页

作者：李友凤吕国岭肖菡曦梁兴林锦良伍远辉遵义师范学院化学化工学院贵州遵义563000

合成氨基和羧基功能基团改性CeO_(2)介孔材料,实验研究了其对Cu^(2+)的吸附性能。结果显示:当pH=9.0时,羧基改性的CeO_(2)对Cu^(2+)的吸附效果最好,吸附率达95.94%;氨基改性的CeO_(2)对Cu^(2+)的吸附效果当pH为8.0时最佳94.56%;随着吸... 详细信息

合成氨基和羧基功能基团改性CeO_(2)介孔材料,实验研究了其对Cu^(2+)的吸附性能。结果显示:当pH=9.0时,羧基改性的CeO_(2)对Cu^(2+)的吸附效果最好,吸附率达95.94%;氨基改性的CeO_(2)对Cu^(2+)的吸附效果当pH为8.0时最佳94.56%;随着吸附液初始[Cu^(2+)]的增大,Cu^(2+)的去除率先增大后减小,当初始[Cu^(2+)]分别为40 mg/L和30 mg/L,吸附效果最好;羧基改性CeO_(2)吸附剂用量为0.12 g/L时,对Cu^(2+)的吸附率最大为94.56%;吸附剂用量为0.16 g/L时,氨基改性CeO_(2)对Cu^(2+)的去除率趋于稳定91.36%,该吸附过程符合准二级动力学模型。

关键词：功能基团改性 CeO_(2) 介孔材料吸附性能

A Tabletop Nano-CT Image Noise Reduction Network Based on 3-Dimensional Axial Attention Mechanism

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Computers, Materials & Continua 2024年第7期80卷 1711-1725页

作者： Huijuan Fu Linlin Zhu ChunhuiWang xiaoqi xi Yu han Lei Li Yanmin Sun Bin Yan Henan Key Laboratory of Imaging and Intelligent Processing PLA Strategic Support Force Information Engineering UniversityZhengzhou450000China

Nano-computed tomography(Nano-CT)is an emerging,high-resolution imaging ***,due to their low-light properties,tabletop Nano-CT has to be scanned under long exposure conditions,which the scanning process is *** 3D reconstruction data,this paper proposed a lightweight 3D noise reduction method for desktop-level Nano-CT called AAD-ResNet(Axial Attention DeNoise ResNet).The network is framed by theU-net *** encoder and decoder are incorporated with the proposed 3D axial attention mechanism and residual dense *** layer of the residual dense block can directly access the features of the previous layer,which reduces the redundancy of parameters and improves the efficiency of network *** 3D axial attention mechanism enhances the correlation between 3D information in the training process and captures the long-distance *** can improve the noise reduction effect and avoid the loss of image structure *** results show that the network can effectively improve the image quality of a 0.1-s exposure scan to a level close to a 3-s exposure,significantly shortening the sample scanning time.

关键词： Deep learning tabletop Nano-CT image denoising 3D axial attention mechanism

Tackling global health security by building an academic community for One Health action

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Infectious Diseases of Poverty 2023年第4期12卷 93-98页

作者： xiao-xi Zhang xin-Chen Li Qi-Yu Zhang Jing-Shu Liu Le-Fei han Zohar Lederman Janna M.Schurer Patrícia Poeta Md.Tanvir Rahman Shi-Zhu Li Kokouvi Kassegne Kun Yin Yong-Zhang Zhu Shang xia Lu He Qin-Qin Hu Le-Shan xiu Jing-Bo Xue han-Qing Zhao xi-han Wangv Logan Wu xiao-Kui Guo Zhao-Jun Wang Bernhard Schwartländer Ming-Hui Ren xiao-Nong Zhou School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghaiPeople’s Republic of China Institute of One Health Shanghai Jiao Tong UniversityShanghaiPeople’s Republic of China Medical Ethics and Humanities Unit Hong Kong UniversityHong KongPeople’s Republic of China Center for One Health University of Global Health EquityButaroRwanda Microbiology and Antibiotic Resistance Team Department of Veterinary SciencesUniversity of Trás-os-Montes and Alto DouroVila RealPortugal Associate Laboratory for Green Chemistry Chemistry DepartmentUniversity Nova of LisbonLisbonPortugal Veterinary and Animal Research Centre University of Trás-os-Montes and Alto DouroVila RealPortugal Associate Laboratory for Animal and Veterinary Sciences University of Trás-os-Montes and Alto DouroVila RealPortugal Department of Microbiology and Hygiene Bangladesh Agricultural UniversityMymensinghBangladesh National Institute of Parasitic Diseases at Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research) NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesShanghaiPeople’s Republic of China Walter and Eliza Hall Institute ParkvilleAustralia Department of Medical Biology University of MelbourneMelbourneAustralia German Ministry of Foreign Affairs(Former Assistant Director General and Chef de Cabinet of Dr Tedros at the World Health Organization) BerlinGermany School of Public Health Peking UniversityBeijingPeople’s Republic of China

Background One Health approach is crucial to tackling complex global public health threats at the interface of humans, animals, and the environment. As outlined in the One Health Joint Plan of Action, the international One Health community includes stakeholders from different sectors. Supported by the Bill & Melinda Gates Foundation, an academic community for One Health action has been proposed with the aim of promoting the understanding and real-world implementation of One Health approach and contribution towards the Sustainable Development Goals for a healthy *** text The proposed academic community would contribute to generating high-quality scientific evidence, distilling local experiences as well as fostering an interconnected One Health culture and mindset, among various stakeholders on different levels and in all sectors. The major scope of the community covers One Health governance, zoonotic diseases, food security, antimicrobial resistance, and climate change along with the research agenda to be developed. The academic community will be supported by two committees, including a strategic consultancy committee and a scientific steering committee, composed of influential scientists selected from the One Health information database. A workplan containing activities under six objectives is proposed to provide research support, strengthen local capacity, and enhance global *** The proposed academic community for One Health action is a crucial step towards enhancing communication, coordination, collaboration, and capacity building for the implementation of One Health. By bringing eminent global experts together, the academic community possesses the potential to generate scientific evidence and provide advice to local governments and international organizations, enabling the pursuit of common goals, collaborative policies, and solutions to misaligned interests.

关键词： One Health Global health Academic community

Clinical usefulness of the baby vision test in young children and its correlation with the Snellen chart

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 348-352页

作者： Ya-Lan Wang Jia-Jun Wang xi-Cong Lou han Zou Yun-E Zhao The Eye Hospital of Wenzhou Medical University Hangzhou 310000Zhejiang ProvinceChina National Clinical Research Center for Ocular Diseases Wenzhou 325027Zhejiang ProvinceChina

AIM:To investigate the efficacy of a new visual acuity(VA)screening method,the baby vision test for young ***:A total 105 eyes of 65 children aged 2-8y were included in the *** testing was conducted using a standardized recognition acuity chart(Snellen visual chart:at 3 m)and the baby vision model *** baby vision device includes a screen,a near infrared camera and a *** were seated at a measured distance of 33-40 cm from a display for *** was estimated according to the highest resolution the children could *** VA data were converted to logarithm of the minimum angle of resolution(logMAR)for statistical *** VA results for each child were recorded and analyzed for ***:The mean VA measured using the Snellen visual chart was 0.62±0.32,and that assessed using the baby vision test was 0.66±*** 95%limit of agreement was-0.609 to 0.695,with 95.2%(100/105)plots within the 95%limits of *** values of the baby vision test were significantly correlated with those of the Snellen chart(R=0.274,P=0.005).CONCLUSION:The baby vision test can be used as a relatively reliable method for estimating VA in young *** new acuity assessment might be a valid predictor of optotype-measured acuity later in preverbal children.

关键词： baby vision test acuity assessment fix-and-follow system Snellen chart

High temperature polyimide nanocomposites containing twodimensional nanofillers for improved thermal stability and capacitive energy storage performance

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Nano Research 2024年第8期17卷 7746-7755页

作者： Ding Ai Yuting han Zongliang xie xi Pang Yuan Chang He Li Chenglong Wu Yonghong Cheng Guanglei Wu State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi’an Jiaotong UniversityXi’an 710049China Institute of Materials for Energy and Environment State Key Laboratory of Bio-Fibers and Eco-TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China

Future electronic devices toward high integration and miniaturization demand reliable operation of dielectric materials at high electric fields and elevated ***,the electrical deterioration caused by Joule heat generation remains a persistent challenge to ***,the solution-processed polyimide(PI)nanocomposites with unique two-dimensional(2D)alumina nanoplates are *** improvements in the breakdown strength,charge–discharge efficiency and discharged energy density at elevated temperatures have been demonstrated in the composites,owing to simultaneously suppressed conduction loss and increased thermal conductivity upon the incorporation of 2D Al_(2)O_(3) nanofillers possessing excellent dielectric insulation and thermophysical *** predominance of Al_(2)O_(3) nanoplates in enhancing thermal stability and high-temperature capacitive performance over nanoparticles and nanowires is validated experimentally and is further rationalized via finite element ***,the Al_(2)O_(3) nanoplates filled PI nanocomposite exhibits a hightemperature capability up to 200℃ and remarkable efficiency(e.g.≥95% at 200 MV/m)over a wide temperature range,which outperforms commercial dielectric polymers and rivals the state-of-the-art polyimide nanocomposites.

关键词： capacitors polymer nanocomposites high temperature energy storage thermal stability

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高吸油量煅烧高岭土的制备与性能表征

现代化工 2024年第6期44卷 129-133,139页

作者：石国亮李晓兰侯春月刘建红吕存琴赵玉英郭雨张乾伟韩陈西常宏丽太原科技大学化学工程与技术学院煤矸石高值利用山西省重点实验室山西太原030024 山西蔺鑫煤焦化有限责任公司山西临汾042500 安徽科技学院化学与材料工程学院安徽蚌埠233100 浮法玻璃新技术国家重点实验室安徽蚌埠233100

通过插层剂二甲基亚砜、接枝剂甲醇和剥离试剂十六烷基三甲基溴化铵协同超声震荡辅助作用,将层状煤系高岭土剥离为超细片状煤系高岭土。通过X射线衍射(XRD)、傅里叶红外(FT-IR)、N_(2)吸附-脱附及扫描电镜(SEM)与能谱分析(EDS)等技术手... 详细信息

通过插层剂二甲基亚砜、接枝剂甲醇和剥离试剂十六烷基三甲基溴化铵协同超声震荡辅助作用,将层状煤系高岭土剥离为超细片状煤系高岭土。通过X射线衍射(XRD)、傅里叶红外(FT-IR)、N_(2)吸附-脱附及扫描电镜(SEM)与能谱分析(EDS)等技术手段对煤系高岭土进行表征。结果表明,其层间距由层状煤系高岭土的0.708 nm扩大到片状煤系高岭土的1.12 nm,内部孔隙增加,形成了裂隙形状的介孔且孔径分布均匀。煅烧高岭土较煤系高岭土的吸油性能大幅提升,其吸油量从60~73 g/100 g煤系高岭土增至70~79 g/100 g煅烧高岭土。整个制备工艺流程中无引入强酸强碱等腐蚀性物质,提供了一种环境友好型煅烧高岭土制备技术。

关键词：煤矸石煅烧高岭土吸油性能制备空隙率

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信息框架对健康行为意愿改变的作用研究——眼动实验与启示

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数据分析与知识发现 2022年第6期6卷 11-21页

作者：韩文婷韩玺朱庆华南京大学工程管理学院南京210023 广东财经大学工商管理学院广州510320 南京大学信息管理学院南京210023

【目的】探究收益-损失框架和时间框架对前意向阶段个体健康行为意愿改变的作用,寻找有效引导个体健康行为意愿改变的健康信息类型。【方法】基于信息框架设计4类健康信息,利用眼动实验记录被试阅读健康信息的眼动数据并采取方差分析的... 详细信息

【目的】探究收益-损失框架和时间框架对前意向阶段个体健康行为意愿改变的作用,寻找有效引导个体健康行为意愿改变的健康信息类型。【方法】基于信息框架设计4类健康信息,利用眼动实验记录被试阅读健康信息的眼动数据并采取方差分析的方法进行分析;结合后续半结构化访谈探究信息框架与健康行为意愿改变间的作用机制及前意向阶段个体的个性化信息需求。【结果】损失框架信息比获得框架信息更能引起被试关注(总注视时长:49.456>32.633,P=0.045;平均注视时长:0.314>0.223,P=0.003)。短期和长期框架信息之间无明显差异(总注视时长:P=0.524;注视次数:P=0.291;平均注视时长:P=0.240)。健康信息通过增强感知风险、感知收益及自我效能影响健康行为意愿。此外,通过访谈数据总结了前意向阶段个体在健康行为改变过程中所需的6类健康信息。【局限】被试结构单一,数量有限,眼动实验仅测试了两种框架信息的作用。【结论】研究结论可为后续针对前意向阶段个体的个性化健康信息干预提供参考。

关键词：信息框架健康行为改变收益-损失框架时间框架眼动实验

Geochemical characteristics of the fluid inclusions in the Gangxi Fault Belt, Huanghua Depression, Bohai Bay Basin, China

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第7期8卷 1011-1020页

作者： DING Wei-wei DAI Jin-xing CHU Feng-you han xi-qiu Key Laboratory of Submarine Geoscience the State Oceanic Administration Hangzhou 310012 China Department of Earth Science Zhejiang University Hangzhou 310027 China

We studied the geochemical characteristics of the fluid inclusions in the Ordovician carbonates and the Oligocene Shahejie Formation sandstones from 15 wells in the Gangxi Fault Belt, Huanghua Depression. The fluid inclusions are all sec- ondary with gas/liquid ratio of 5%~10%. Base on Raman they are mainly composed of H2O, CO2 and CH4. The homogenization temperatures, combined with burial and geothermal history of the host rock, indicate that the fluid flows in the Shahejie Formation and the Ordovician carbonates were trapped in Neocene. Using a VG5400 mass spectrometer, the helium isotopic compositions were analyzed. Interpretation of results suggested a significant amount of mantle-derived helium mainly accumulating in the intersections of the NWW trending Xuzhuangzi and NE trending Gangxi faults. The maturity of hydrocarbon decreases from the intersection to the outside pointing out that the fluid related to the NWW trending Xuzhuangzi and NE trending Gangxi faults. These factors implied the fluid inclusions have a close relationship to the local tectonic setting. Gangxi Fault Belt experienced intensive Neo-tectonic activities in Cenozoic. Widespread faulted-depressions and strong volcanic eruptions manifested its tec- tonic status of extensional stress field. Mantle uplift caused the movement of magma that carried mantle-derived gases and deep heat flows, the deep-rooted tension faults provided the passages for the gases and heat flows to shallow crust levels.

关键词：流动物质地球化学物质构造岩石

Mass Spectrometric Fragmentation of 1,8-Bis[4-substituted- (oxazolin-2-yl)] anthracenes: Ring-contraction Rearrangement of Oxazoline Ring under Electron-Impact Ionization Conditions

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Chemical Research in Chinese Universities 2006年第6期22卷 753-755页

作者： JIAO Peng MA Lin-ge ZhanG Qi-han XU Jia-xi Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education College of Chemistry and Molecular Engineering Peking University Bering 100871 P. R. China

The mass spectrometric fragmentation of 1,8-bis [ 4-substituted （oxazolin-2-yl） ] anthracenes （AnBOXes） was investigated by using mass-analyzed ion kinetic energy spectrometry under electron-impact ionization conditions. All the compounds could undergo a ring contraction by the loss of an RCH = CH2 molecule to form 1-oxazirinyl-8-（oxazolin- 2-yl） anthracene ions, which could further lose an R radical, followed by the loss of oxazoline. These ions could also eliminate an R radical and subsequently undergo ring-contraction rearrangements to lose a CHCH2O fragraent and an epoxide molecule, respectively. The ions that are formed could further lose CHCH2O and CH2 = CH fragments. Several ring-contraction rearrangements of the oxazoline ring were observed under electron-impact ionization conditions.

关键词： Bis-oxazoline EI-MS Fragmentation Ring contraction