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Unveiling the geometric site dependent activity of spinel Co_(3)O_(4)for electrocatalytic chlorine evolution reaction

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Journal of Energy Chemistry 2024年第5期92卷 95-103页

作者： linke Cai Yao Liu Jingfang Zhang Qiqi Jia Jiacheng Guan Hongwei Sun Yu Yu Yi Huang Key Laboratory of Pesticide&Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079HubeiChina Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205HubeiChina College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601AnhuiChina

Spinel cobalt oxide(Co_(3)O_(4)),consisting of tetrahedral Co^(2+)(CoTd)and octahedral Co^(3+)(CoOh),is considered as promising earth-abundant electrocatalyst for chlorine evolution reaction(CER).Identifying the catalytic contribution of geometric Co site in the electrocatalytic CER plays a pivotal role to precisely modulate electronic configuration of active Co sites to boost ***,combining density functional theory calculations and experiment results assisted with operando analysis,we found that the Co_(Oh) site acts as the main active site for CER in spinel Co_(3)O_(4),which shows better Cl^(-)adsorption and more moderate intermediate adsorption toward CER than CoTd site,and does not undergo redox transition under CER condition at applied *** by above findings,the oxygen vacancies were further introduced into the Co_(3)O_(4) to precisely manipulate the electronic configuration of Co_(Oh) to boost Cl^(-)adsorption and optimize the reaction path of CER and thus to enhance the intrinsic CER activity *** work figures out the importance of geometric configuration dependent CER activity,shedding light on the rational design of advanced electrocatalysts from geometric configuration optimization at the atomic level.

关键词： Chlorine evolution reaction Geometry effects Active chlorine Electronic configuration optimization Spinel oxides

Implementation and evaluation of Exercise is Medicine in primary care clinics within a large academic health system

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Family Medicine and Community Health 2024年第1期12卷 16-27页

作者： John Kevin Ong Dayao Caroline E L Duffy Amalia M Cristiano Gene'Rusty'Kallenberg Sarah E linke University of California San Diego School of Medicine La JollaCaliforniaUSA Milken Institute of Public Health The George Washington UniversityWashingtonDistrict of ColumbiaUSA The University of Texas Medical Branch at Galveston School of Medicine GalvestonTexasUSA Scripps Family Medicine Residency Scripps Mercy Hospital Chula VistaChula VistaCaliforniaUSA Herbert Wertheim School of Public Health&Human Longevity Science University of California San DiegoLa JollaCaliforniaUSA Department of Family Medicine University of California San DiegoLa JollaCaliforniaUSA Omada Health San FranciscoCaliforniaUSA

Objective Exercise is Medicine(EIM)is a global initiative encouraging healthcare providers to routinely assess and promote physical activity(PA)among *** objective of this study was to evaluate the feasibility,adoption,implementation and effectiveness of EIM from patient,clinician and healthcare staff perspectives using a combination of electronic health record(EHR),survey and interview *** This study used a combination of the Practical Robust Implementation and Sustainability Model(PRISM)and the Learning Evaluation model to implement *** captured from the EHR,including Physical Activity Vital Sign(PAVS)scores,and data collected from qualitative surveys and interviews were used to evaluate the programme’s Reach,Effectiveness,Adoption,Implementation,Maintenance(RE-AIM,which is embedded within PRISM)from provider,staff and patient *** Five primary care clinics within a large academic health *** A total of 24443 patients from all participating clinics had at least one PAVS score during the study period.A total of 17 clinicians completed surveys,and 4 clinicians,8 medical assistants and 9 patients completed *** Implementation fidelity metrics varied widely between components and across clinics but were generally consistent over time,indicating a high degree of programme *** was highest during the first 6 months of the COVID-19 pandemic when most visits were *** PAVS scores increased from 57.7(95%CI:56 to 59.4)to 95.2(95%CI:91.6 to 98.8)min per week at 6 months for patients not meeting PA guidelines at baseline and decreased from 253.84(95%CI:252 to 255.7)to 208.3(95%CI:204.2 to 212.4)min per week at 6 months for patients meeting PA guidelines at *** EIM implementation,clinician-estimated time spent discussing PA with patients increased for 35%of providers and stayed the same for 53%.Conclusion Overall,this study established EIM’s feasibility,adoption,implementation

关键词： routine qualitative completed

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平台生态促进共同富裕的逻辑与路径

中国人民大学学报 2024年第1期38卷 86-99页

作者：欧阳日辉李林珂中央财经大学中国互联网经济研究院中国人寿财产保险股份有限公司广西分公司金融科技部

互联网平台及其生态是价值实现的新载体,可以在共同富裕建设中发挥重要作用。本文以平台生态化演进、价值创造和分配为主线,研究大型互联网平台及其生态在价值创造活动中的组织架构、组织行为以及组织关系。本文发现大型互联网平台及其... 详细信息

互联网平台及其生态是价值实现的新载体,可以在共同富裕建设中发挥重要作用。本文以平台生态化演进、价值创造和分配为主线,研究大型互联网平台及其生态在价值创造活动中的组织架构、组织行为以及组织关系。本文发现大型互联网平台及其生态促进共同富裕的机理是,重塑工业经济下的价值创造和价值分配逻辑,对实体价值链进行模块化解构,增加整个生态的财富增量,通过技术创新和模式创新提升参与者共享价值创造的能力,形成效率与公平相互促进的良性循环。平台生态构建的价值共创网络呈现无界化的普惠趋势,驱动个体、产业和区域的融合共生,为实现共同富裕提供了新路径和新场景。但是,平台生态对共同富裕的最终贡献率取决于其价值转化过程中共益和共毁的双向抵消效应,增强正向效应的影响力依赖于政府的正确引导和有效规制。

关键词：平台生态价值共创生态型垄断共同富裕

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基于稳定性的第三代先进高强钢设计

金属学报 2024年第2期60卷 143-153页

作者：张宇吴盼贾东昇黄林科贾晓晴刘峰西北工业大学凝固技术国家重点实验室西安710072 上海交通大学材料科学与工程学院上海200240 西北工业大学分析测试中心西安710072

第三代先进高强钢(TG-AHSS)是近年来材料科学与汽车工业领域的研究热点。本文针对TG-AHSS的成分设计、热处理工艺及强韧化机制,基于热力学稳定性阐明了第三代先进高强钢成分设计的宗旨,基于广义稳定性对几类代表性热处理工艺进行了诠释... 详细信息

第三代先进高强钢(TG-AHSS)是近年来材料科学与汽车工业领域的研究热点。本文针对TG-AHSS的成分设计、热处理工艺及强韧化机制,基于热力学稳定性阐明了第三代先进高强钢成分设计的宗旨,基于广义稳定性对几类代表性热处理工艺进行了诠释。在此基础上,从广义稳定性与热-动力学相关性形成的热-动力学贯通性入手,对第三代先进高强钢的强韧化机制进行了总结和归纳。从热-动力学角度,对第三代先进高强钢的设计策略进行了展望。

关键词：第三代先进高强钢成分工艺设计热力学稳定性广义稳定性热-动力学相关性

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城市轨道交通蓄电池工程车制动模式研究

现代制造技术与装备 2024年第1期60卷 26-28页

作者：卢林科厦门地铁运营有限公司厦门361000

厦门地铁1~3号线均采用由中车株洲电力机车有限公司生产的ZER3型蓄电池工程车,制动系统均采用DK-2型。1号线和2号线蓄电池工程车制动系统选用空电混合制动模式,该模式下使用单独制动控制器(又称小闸制动)时,空电混合制动功能自动介入,... 详细信息

厦门地铁1~3号线均采用由中车株洲电力机车有限公司生产的ZER3型蓄电池工程车,制动系统均采用DK-2型。1号线和2号线蓄电池工程车制动系统选用空电混合制动模式,该模式下使用单独制动控制器(又称小闸制动)时,空电混合制动功能自动介入,但是使用自动制动控制器(又称大闸制动)时,不具备电制动集成介入功能。3号线蓄电池工程车制动系统属于空电联合制动模式,该模式下不论是大闸制动还是小闸制动,均具备电制动介入功能。

关键词：城市轨道交通蓄电池工程车制动模式

基于HPLC-LTQ-Orbitrap-MS/MS技术快速分析肺形草中的化学成分

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中国药学杂志 2024年第6期59卷 491-500页

作者：张艺谭春梅马临科郑成陈碧莲浙江中医药大学药学院杭州310053 浙江省食品药品检验研究院杭州310052 国家药品监督管理局中成药质量评价重点实验室杭州310052

目的建立高效、稳定的高效液相色谱-线性离子阱串联质谱联用技术(HPLC-LTQ-Orbitrap-MS/MS)方法,对肺形草全草的化学成分快速识别和鉴定。方法采用HPLC-LTQ-Orbitrap-MS/MS对肺形草中的化学成分进行快速分析。通过HPLC-LTQ-Orbitrap-M... 详细信息

目的建立高效、稳定的高效液相色谱-线性离子阱串联质谱联用技术(HPLC-LTQ-Orbitrap-MS/MS)方法,对肺形草全草的化学成分快速识别和鉴定。方法采用HPLC-LTQ-Orbitrap-MS/MS对肺形草中的化学成分进行快速分析。通过HPLC-LTQ-Orbitrap-MS/MS扫描得到的化合物相对分子质量,对照品和多级碎片离子信息,并结合相关文献以及裂解规律,从而实现对肺形草的准确定性分析。结果共鉴定出92种化学成分,包括黄酮类、萜类、有机酸类、蒽醌类、糖类、酯类等,其中化合物3,4-di-O-caffeoylquinic acid、(2S,3S,4S,5R,6S)-6-[2-(3,4-dihydroxyphenyl)-5-hydroxy-4-oxochromen-7-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid、(1S,4aS,7S,7aS)-1-[(2S,3R,4S,5S,6R)-6-[[(E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxy-7-hydroxy-7-methyl-4a, 5,6,7a-tetrahydro-1H-cyclopenta[c]pyran-4-carboxylic acid和Glc-Glc-octadecatrienoyl-sn-glycerol经全球天然产物社会分子网络系统(GNPS)数据库比对,为首次在该植物中鉴别得到。结论建立了对肺形草中化学成分的快速定性分析的方法,为肺形草化学成分的提取分离及其药效物质基础提供科学依据,并为其质量评价和应用开发提供了一定的参考。

关键词：肺形草高效液相色谱-线性离子阱串联质谱联用技术黄酮萜有机酸蒽醌酯

拓展anti-MoS_(2)单层结构的疆域:稳定性和功能性的理论研究

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Science China Materials 2024年第4期67卷 1260-1272页

作者：李锋钰刘宇余林珂吕晓东金朋陈中方 School of Physical Science and Technology Inner Mongolia UniversityHohhot 010021China College of Physics and Electronic Information Inner Mongolia Normal UniversityHohhot 011517China School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China Department of Chemistry University of Puerto RicoRio Piedras CampusSan Juan PR 00931USA

受二维(2D)过渡金属硫族化合物(TMDs)独特结构和电子性质的启发,我们通过高通量第一性原理计算,筛选了稳定的具有anti-MoS_(2)结构(1T和2H相)的2D硫族化合物X_(2)T(X=过渡金属Sc-Hg和主族元素Li-Ba;T=S、Se和Te).在经过评估的396个候选... 详细信息

受二维(2D)过渡金属硫族化合物(TMDs)独特结构和电子性质的启发,我们通过高通量第一性原理计算,筛选了稳定的具有anti-MoS_(2)结构(1T和2H相)的2D硫族化合物X_(2)T(X=过渡金属Sc-Hg和主族元素Li-Ba;T=S、Se和Te).在经过评估的396个候选物中,超过50个X_(2)T(X=Sc,Fe,Y,Zr,Nb,Hf,Ta,IA元素Li-Fr,IIA元素Ca-Ra,N,In,T1和Te;T=S、Se或Te)单层材料在1T/1T’或2H相中表现出优异的热力学、动力学、力学和热学稳定性.这些anti-MoS_(2)二维材料表现出多样的特性,可以是非磁性/磁性金属或非磁性/反铁磁性半导体,杨氏模量常超过MoS_(2),并可能具有负泊松比.基于过渡金属的单层容易被O_(2)氧化,其中一些表现出高N_(2)解离活性.氧/氮表面饱和可以抑制过渡金属磁性并增加材料的能带间隙.值得注意的是,在表面原子被氧饱和后,2H-Fe_(2)S单层仍能保持强大的反铁磁性.此外,基于过渡金属的X_(2)T薄片有望作为高效析氢反应的电催化剂.这项研究为二维材料领域增添了新成员,提供了多样的性质与功能,并拓宽了它们的潜在应用领域.

关键词：反铁磁性过渡金属硫族化合物磁性金属单层结构氧饱和负泊松比析氢反应杨氏模量

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环境水体中化学品光化学持久性的预测模型

科学通报 2024年第6期69卷 731-745页

作者：何家乐陈景文王杰琼葛林科崔飞飞陈曦大连理工大学环境学院大连市化学品风险防控及污染防治技术重点实验室工业生态与环境工程教育部重点实验室大连116024 华北电力大学环境科学与工程学院北京102206 陕西科技大学环境科学与工程学院西安710021

化学品是水环境中新污染物的重要来源,光化学转化是其在表层水体中的重要去除途径,光化学持久性是评价其环境暴露行为特性的重要指标.化学品的环境光化学转化受其分子结构、水体特性等多重因素的影响,仅通过实验测定,难以确定其在自然... 详细信息

化学品是水环境中新污染物的重要来源,光化学转化是其在表层水体中的重要去除途径,光化学持久性是评价其环境暴露行为特性的重要指标.化学品的环境光化学转化受其分子结构、水体特性等多重因素的影响,仅通过实验测定,难以确定其在自然水体中光转化动力学参数值,需要构建预测模型.本文总结了影响化学品环境光转化动力学的因素和机理,介绍了化学品光吸收、光化学转化、水中光生活性中间体的生成以及太阳光在大气/水体中的衰减等过程中相关参数的预测模型,评述了化学品光化学持久性参数预测模型的前沿问题和研究需求,展望了环境水体中化学品光化学持久性研究的重点发展方向.

关键词：化学品环境光化学持久性光化学转化预测模型定量构效关系(QSAR)

Enhancing short-term ethanol-type fermentation of waste activated sludge by adding saccharomycetes and the implications for bioenergy and resource recovery

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Journal of Environmental Sciences 2022年第3期34卷 179-189页

作者： linke Zheng Ying Xu Hui Geng Xiaohu Dai State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China East China Architecture Design&Research Institute Shanghai 200002China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Ethanol-type sludge fermentation has recently attracted much attention because it can enhance direct interspecies electron transfer and thus improve the anaerobic digestion of waste activated sludge(WAS). In this paper, the enhancement of short-term ethanol-type fermentation of WAS via adding Saccharomyces was investigated. The experimental results show that the maximum ethanol production of 1030.8 ± 20.6 mg/L was achieved, with the optimum fermentation conditions of a p H of 5.1, temperature of 26.0 ℃ and time of 8.0 hr. Although the content of volatile fatty acid(VFA) increased within 10 hr, it is one order of magnitude lower than the content of ethanol, indicating that the VFA generation did not affect the efficient production of ethanol. The analyses of changes in the microbial community during the fermentation process demonstrate that the greatest Saccharomyces activity occurred in the first 8 hr and it can play an important role in ethanol production even at a very low relative abundance. Meanwhile, most typical acid-producing bacteria were inhibited, but the hydrogenotrophic methanogens(i.e., Methanobacterium) were enriched to a certain extent. Further statistical analyses reveal that the Rhodobacter, Thermomonas, Terrimonas and Saccharomyces are responsible for ethanol production during the fermentation. However, these findings not only provide a reference for the development of enhancing ethanol-type fermentation of sludge, but also are expected to provide a new way of thinking for the efficient bioenergy and resource recovery from sludge.

关键词： Anaerobic digestion Sewage sludge Methane production Ethanol production Biodegradability