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A comprehensive understanding of the anionic redox chemistry in layered oxide cathodes for sodium-ion batteries

Science China Chemistry 2021年第3期64卷 385-402页

作者： Junteng Jin Yongchang Liu xuelu pang Yao Wang Xianran Xing Jun Chen Beijing Advanced Innovation Center for Materials Genome Engineering Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing 100083China Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China

Sodium-ion batteries(SIBs) have demonstrated great application prospects in large-scale energy storage systems and low-speed electric vehicles due to the cost effectiveness and abundant resources. Layered transition-metal oxides are recognized as one of the most attractive sodium-ion storage cathode candidates by virtue of their high compositional diversity, environmental friendliness, ease of synthesis, and promising theoretical capacities. The practicability, however, is still limited by the fact that the energy densities of most Na-storage layered oxide cathodes solely using the conventional cationic redox are not comparable to those of the lithium-ion storage counterparts. Recently, the strategy of activating anionic redox(O^(2-)/O^(n-)) which is popular in Li-rich layered materials has been successfully applied in oxide cathodes of SIBs to promote the energy density to a new level. It is interesting to note that excess Na is not the prerequisite to induce anionic redox in sodium oxides, indicating a new mechanism underlying Na-ion materials. Herein, the latest advances on the anionic redox chemistry in layered oxide cathodes for SIBs,including the fundamental theories, triggering strategies, and applicable cathode materials, are comprehensively ***, the challenges(mainly O_(2) release) facing anionic redox are discussed, and the possible remedies are outlined for future developments toward a highly reversible oxygen usage. We believe that this review can provide a valuable guidance for the exploration of high-energy layered oxide cathode materials of SIBs.

关键词： sodium-ion batteries layered oxide cathodes anionic redox high energy density charge compensation mechanism

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The nodule-specific transcriptional repressor Top Hub 4 regulates nodule structure and nitrogen fixation capacity in soybean

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Journal of Genetics and Genomics 2024年第1期51卷 96-99页

作者： Kui Ge Qi Lv Shengcai Chen Zhenhao Guo Yaqi Peng Yimian Chen Shiyong Sun xuelu Wang College of Life Science and Technology Huazhong Agricultural UniversityWuhanHubei 430070China State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityZhengzhouHenan 450046China The Academy for Advanced Interdisciplinary Studies Henan UniversityZhengzhouHenan 450046China Sanya Institute of Henan University SanyaHainan 572025China

Most leguminous plants establish symbiotic relationships with rhizobia to form root organs called nodules(Ferguson et al.,2010).Nodules are specialized organs containing bacterial symbionts,which can provide enormous amounts of fixed nitrogen to their plant hosts(Peoples et al.,2009).Soybean(Glycine max),an economically important grain and oil crop,forms symbiotic nitrogen-fixing nodules,which reduces the demand for chemical nitrogen fertilizers and promotes yield(Saito et al.,2014).Nodule development is spatiotemporally regulated by the action of a number of transcription factors(TFs).

关键词： specialized organs soybean

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Constructing Ce-Mn/Al2O3 with different active components for low temperature catalytic degradation of chlorobenzene in soil

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Journal of Rare Earths 2024年第10期 1873-1881页

作者： Tianyu Sun Mutao Xu xuelu Meng Tiantian Liu Qijie Jin Chengzhang Zhu Haitao Xu School of Environmental Science and Engineering Nanjing Tech University College of Materials Science and Engineering Nanjing Tech University

Soil remediation containing numerous organic contaminants is of great significance to ecological ***,the synergetic effects of Ce-Mn/Al2O3with different active components on catalytic thermal desorption of chlorobenzene in soil were *** optimized Ce-Mn/Al2O3drastically enhance the desorption efficiency of chlorobenzene,and the corresponding conversion reaches 100%within 1 h at a low temperature of 120℃.The superior performance is ascribed to the formation of Ce-Mn solid solution during the calcination process,resulting in a certain lattice change to the generation of abundant oxygen vacancies and acidic *** with the analysis of in-situ diffuse reflectance infrared spectroscopy and gas chromatography-mass spectrometry,the final products of chlorobenzene are decomposed into CO2,H2O,Cl2and *** work sheds light on the rational design of highly-active catalysts for practical applications of sustainable soil remediation.

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D-type neuropeptide decorated AIEgen/RENP hybrid nanoprobes with light-driven ROS generation ability for NIR-Ⅱ fluorescence imaging-guided through-skull photodynamic therapy of gliomas

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Aggregate 2024年第1期5卷 185-195页

作者： xuelu He Yuan Luo Yanying Li Yuanbo Pan Ryan T.K.Kwok Lulu He Xiaolin Duan Pengfei Zhang Aiguo Wu Ben Zhong Tang Juan Li Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology Zhejiang International Cooperation Base of Biomedical Materials Technology and ApplicationChinese Academy of Sciences(CAS)Key Laboratory of Magnetic Materials and DevicesNingbo Cixi Institute of Biomedical EngineeringZhejiang Engineering Research Center for Biomedical MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboP.R.China Guangdong Key Laboratory of Nanomedicine Shenzhen Engineering Laboratory of Nanomedicine and NanoformulationsCAS-HK Joint Lab for BiomaterialsResearch Laboratory for Biomedical Optics and Molecular ImagingShenzhen Key Laboratory for Molecular ImagingCAS Key Lab for Health InformaticsShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenP.R.China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced StudyThe Hong Kong University of Science and Technology(HKUST)KowloonP.R.China School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenP.R.China

Glioma is one of the most common malignant tumors of the central nervous system,leading high mortality rates in ***-induced emission(AIE)photosensitizers-based photodynamic therapy(PDT)has emerged as a promising therapeutic strategy for least-invasive treatment of glioma,which involves local irradiation of the tumor using an external near-infrared(NIR)***,most AIE photosensitizers suffered from poorly penetration of the visible light excitation,bad spatiotemporal resolution in deep tissues and low efficient blood-brain barrier(BBB)crossing ability,which greatly limited the clinical practice of AIE photosensitizers for especially deep-seated brain tumor *** this work,we developed a multifunctional NIR-driven theranostic agent through hybrid of AIE photosensitizers TIND with rare-earth doping nanoparticles(RENPs)NaGdF4:Nd/Yb/Tm with up/down dual-mode conversion *** theranostic agent was further decorated with D-type neuropeptide DNPY for crossing BBB and targeting *** the 808-nm light irradiation,the down-conversion NIR-II luminescence could indicate the position glioma and the upconversion NIR-I luminescence could trigger the AIE photosensitizers producing reactive oxygen species to inhibit orthotopic glioma tumor growth in *** results demonstrate that the integration of Dtype neuropeptide,AIE photosensitizers and RENPs could be promising candidates for in vivo NIR-II fluorescence image-guided through-skull PDT treatments of brain tumors.

关键词： aggregation-induced emission D-type neuropeptide glioma photodynamic therapy rare-earth doping nanoparticles

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量子化学计算在煤炭清洁高效转化微观机制的应用

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洁净煤技术 2024年第2期30卷 36-47页

作者：马雪璐张子涵解强中国矿业大学(北京)化学与环境工程学院北京100083

为推进实现碳达峰、碳中和的目标,煤炭作为我国能源结构的基础原料,其利用的清洁化、高效化需要持续深化内涵。量子化学作为解释微观结构及作用机制的重要理论,目前已被广泛应用于煤化学领域,为煤炭研究提供更多微观信息,以促进煤炭清... 详细信息

为推进实现碳达峰、碳中和的目标,煤炭作为我国能源结构的基础原料,其利用的清洁化、高效化需要持续深化内涵。量子化学作为解释微观结构及作用机制的重要理论,目前已被广泛应用于煤化学领域,为煤炭研究提供更多微观信息,以促进煤炭清洁高效利用技术的发展。基于此,概述了量子化学计算在优化煤炭模型分子结构、探讨煤炭清洁高效转化反应机理和明确反应影响因素作用机制3方面的应用,重点对煤热解、燃烧、气化及液化过程中存在的微观问题进行分析、梳理,涉及煤的热解和燃烧过程中的氮元素迁移转化机理、煤基特征官能团与CO_(2)的气化特性、煤液化微观机理中的氢转移反应,以及气氛和催化剂等因素的作用机制等,最后就匹配煤炭变质程度的演变模型、煤炭反应过程中的多因素作用影响机制、完整转化机理、催化剂优化、创新集成工艺等问题,对量子化学在煤炭清洁高效转化领域中有待深入挖掘的科学问题进行了总结与展望,力图为煤炭清洁转化利用技术的研究和应用提供启示。

关键词：量子化学煤热解煤燃烧煤气化煤液化密度泛函理论

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Mercury speciation, bioavailability and risk assessment on soil–rice systems from a watershed impacted by abandoned Hg mine-waste tailings

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Acta Geochimica 2019年第3期38卷 391-403页

作者： Jian pang Jialiang Han xuelu Fan Chan Li Xian Dong Longchao Liang Zhuo Chen School of Chemistry and Materials Science Guizhou Normal University College of Resource and Environmental Engineering Guizhou University

Mercury(Hg) is a global pollutant and can be accumulated in the food chain, posing exposure risks to humans. In this study, rice plants and corresponding rhizosphere soil samples were collected from a watershed of the Wawu River Basin that is heavily impacted by historic Hg mining and retorting activities. Total mercury(THg)and methylmercury(MeHg) in rice grains, as well as other tissues and soil samples, were measured. Five soil Hg fractions, as well as soil parameters, were also *** results show that the average concentrations of THg and MeHg in rice grains were 14 ± 7.0 lg kg^(-1) and7.2 ± 4.0 lg kg^(-1). Soil organic-bound(Hg-o) and strong complex-bound(Hg-s) were the main Hg fractions,accounting for 44% of the total. To estimate the Hg–ligand interaction in the soils, soil-N/Hg(R = 0.451, p \ 0.05),-S/Hg(R = 0.372, p \ 0.1), and-OM/Hg ratio(R = 0.320,p \ 0.5) with MeHg_(soil) were observed with significant positive correlations, indicating that the formation of Hg–OM, Hg–N–OM or Hg–S–OM complexes could prevent Hg(II) from methylation in soils. The significant positive correlations of the-N/Hg ratio,-S/Hg ratio and-OM/Hg ratio with MeHg in rice tissues suggested that Hg methylation and MeHg demethylation occurred throughout the rice paddy ecosystem. The estimated MeHg daily intake(EDI) was 0.075 ± 0.041 lg kg^(-1) bw d^(-1) and was lower than the RfD level of 0.1 lg kg^(-1) bw d^(-1) recommended by the US EPA. However, approximately 29% of the hazardous index(HI) of MeHg in grain exceeded 1, posing a potential threat to local populations, particularly pregnant women and children.

关键词： Mercury and methylmercury Rice Mercury speciation and bioavailability Paddy soil Risk assessment

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埋底界面修饰实现高效稳定钙钛矿太阳能电池

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发光学报 2024年第6期45卷 996-1004页

作者：陈中良胡文涛王雪璐徐敬华孙超姚叶锋华东师范大学物理与电子科学学院上海200241 苏州市食品检测中心江苏苏州215104

埋底界面修饰可以有效提高钙钛矿太阳能电池的效率和稳定性。本工作通过采用双(三苯基磷)氯化钴(BTPPCC)作为预埋底界面的表面修饰剂,成功钝化了MAPbI3钙钛矿薄膜下表面富集的缺陷,优化了钙钛矿薄膜与下方空穴传输层(HTL)之间的界面接触... 详细信息

埋底界面修饰可以有效提高钙钛矿太阳能电池的效率和稳定性。本工作通过采用双(三苯基磷)氯化钴(BTPPCC)作为预埋底界面的表面修饰剂,成功钝化了MAPbI3钙钛矿薄膜下表面富集的缺陷,优化了钙钛矿薄膜与下方空穴传输层(HTL)之间的界面接触,提高了钙钛矿光吸收层的结晶性能。此外,BTPPCC还有效地抑制了界面电荷的非辐射复合作用,改善器件的长期稳定性,使得p-i-n型器件的能量转换效率(PCE)从18.37%提升至20.12%,未封装器件在相对湿度(RH)为50%的室温环境空气中连续工作近500 h后仍保持初始效率的76%以上。这为钙钛矿埋底界面优化提供了一种有效的方法。

关键词：钙钛矿太阳能电池埋底界面缺陷钝化

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左心房应变特征与慢性心力衰竭患者运动耐力的相关性

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中华老年心脑血管病杂志 2024年第2期26卷 159-162页

作者：刘卫涛王冬晓汤雪璐聊城市人民医院心内科 252000 聊城市人民医院心脏彩超室 252000

目的探讨左心房应变特征与慢性心力衰竭(CHF)患者运动耐力的相关性。方法前瞻性选取2021年11月至2023年1月聊城市人民医院收治的212例CHF患者为研究对象,根据最大摄氧量(VO2max)将患者分为2组,VO_(2max)≥16 ml/(kg·min)为高耐力组(125... 详细信息

目的探讨左心房应变特征与慢性心力衰竭(CHF)患者运动耐力的相关性。方法前瞻性选取2021年11月至2023年1月聊城市人民医院收治的212例CHF患者为研究对象,根据最大摄氧量(VO2max)将患者分为2组,VO_(2max)≥16 ml/(kg·min)为高耐力组(125例),VO2max<16 ml/(kg·min)为低耐力组(87例)。分析2组患者的一般资料和实验室检查结果。采用多因素logistic回归分析影响患者运动耐力的相关因素。结果2组N末端B型钠尿肽前体(NT-proBNP)、二尖瓣舒张早期血流峰值速度(E)/二尖瓣环舒张早期血流峰值速度(e′)比值、E、左心室舒张末期容积指数(LVEDVI)、左心室收缩末期容积指数、左心室每搏量指数、左心室射血分数(LVEF)、左心室整体纵向应变、左心房最大容积指数、左心房最小容积指数、左心房存储应变(LASr)、左心房管道应变(LAScd)、左心房收缩应变(LASct)比较,差异有统计学意义(P<0.05);多因素logistic回归分析显示,LASr(OR=0.987,95%CI:1.003~1.029)、LAScd(OR=1.177,95%CI:0.688~0.955)、LASct(OR=1.341,95%CI:0.507~0.884)、NT-proBNP(OR=1.002,95%CI:0.995~1.000)、E/e′(OR=1.086,95%CI:1.000~1.183)、LVEDVI(OR=1.127,95%CI:0.805~0.936)、LVEF(OR=0.909,95%CI:0.824~1.000)是影响CHF患者运动耐力的相关因素(P<0.05);限制性立方条图显示,LASr、LAScd、LASct与CHF患者运动耐力呈显著非线性关系(χ^(2)分别为9.830、16.820、9.080,P<0.05)。结论左心房应变特征相关指标与CHF患者运动耐力具有相关性。

关键词：心力衰竭心房身体耐力数据相关性前瞻性研究左心房应变运动耐力

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外阴阴道假丝酵母菌病发病和耐药机制的研究进展

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妇儿健康导刊 2024年第12期3卷 17-20页

作者：田学鲁孔霞山东省济宁市皮肤病防治院山东济宁272000

外阴阴道假丝酵母菌病是临床常见的一种阴道黏膜真菌感染性疾病,感染率和复发率较高。多种因素可以导致阴道微生物菌群失调,进而诱发外阴阴道假丝酵母菌病。受抗生素、免疫抑制剂及临床不规范用药等因素影响,越来越多的抗真菌药物存在... 详细信息

外阴阴道假丝酵母菌病是临床常见的一种阴道黏膜真菌感染性疾病,感染率和复发率较高。多种因素可以导致阴道微生物菌群失调,进而诱发外阴阴道假丝酵母菌病。受抗生素、免疫抑制剂及临床不规范用药等因素影响,越来越多的抗真菌药物存在获得性耐药问题。基于此,本文对外阴阴道假丝酵母菌病的发病机制和耐药机制进行综述,旨在为临床治疗提供理论依据。

关键词：外阴阴道假丝酵母菌病发病机制耐药机制

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抗骨质疏松药物对老年骨质疏松性肱骨近端骨折患者术后恢复的影响

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中国药物滥用防治杂志 2024年第1期30卷 127-130页

作者：徐学禄姜泽昭天津市静海区医院骨二科天津301600

目的:探讨抗骨质疏松药物在老年骨质疏松性肱骨近端骨折患者术后恢复中的应用效果。方法:回顾性选取我院骨科2019年10月—2021年5月收治的77例骨质疏松性肱骨近端骨折老年患者作为研究对象。根据患者在术后是否使用抗骨质疏松性药物将... 详细信息

目的:探讨抗骨质疏松药物在老年骨质疏松性肱骨近端骨折患者术后恢复中的应用效果。方法:回顾性选取我院骨科2019年10月—2021年5月收治的77例骨质疏松性肱骨近端骨折老年患者作为研究对象。根据患者在术后是否使用抗骨质疏松性药物将患者分为试验组(n=40)和对照组(n=37),其中对照组仅使用肱骨近端锁定接骨板治疗,试验组在术后接受抗骨质疏松治疗,比较两组骨折愈合时间、骨折愈合优良率、肩关节功能、疼痛程度及不良反应发生情况。结果:试验组骨折愈合时间短于对照组,骨折愈合优良率高于对照组(P0.05);试验组不良反应发生率为2.50%,低于对照组的18.92%(P<0.05)。结论:在老年骨质疏松性肱骨近端骨折患者的治疗中加入抗骨质疏松药物治疗可加快患者的康复进程,改善肩关节功能,减轻机体疼痛程度,并降低不良反应发生概率,值得临床应用。

关键词：老年患者骨质疏松肱骨近端骨折不良反应

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