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早强型基层再生混合料路用性能及施工特性研究

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上海公路 2024年第3期 145-149,M0008,M0009页

作者：任晓迪山西省高速公路集团太原有限责任公司山西太原030031

添加早强水泥能够有效提高乳化沥青再生混合料的早期强度,并减少其强度形成时间。通过室内试验来确定再生混合料的最佳级配、最佳含水量及最佳乳化沥青含量,并对冷再生混合料的力学性能、水稳定性及低温抗裂性能进行研究,最后分析了早... 详细信息

添加早强水泥能够有效提高乳化沥青再生混合料的早期强度,并减少其强度形成时间。通过室内试验来确定再生混合料的最佳级配、最佳含水量及最佳乳化沥青含量,并对冷再生混合料的力学性能、水稳定性及低温抗裂性能进行研究,最后分析了早强型基层再生混合料的施工工艺及质量控制指标。研究结果表明:(1)冷再生混合料的新旧骨料质量比为2∶8时,最佳含水量为6%,最佳乳化沥青含量为5%。(2)添加早强水泥,能够有效改善冷再生混合料的力学性能。随着水泥含量的增加,冷再生混合料的强度先快速增加、后趋于平缓。添加2%早强水泥时,冷再生混合料早期劈裂强度的增加幅度最大,3 d劈裂强度即可满足下面层要求。(3)相较普通水泥,添加早强水泥对冷再生混合料的水稳定性及低温抗裂性能的改善效果更好。

关键词：早强水泥冷再生混合料劈裂强度水稳定性低温抗裂性

“未被识别的文化货币”对社会工作优势视角的拓展及其限度

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社会工作与管理 2024年第3期24卷 22-28页

作者：孙旭友任晓迪山东女子学院社会与法学院山东济南250300 滨州市民政局山东滨州256606

社会工作优势视角通过发掘服务对象的优势资源,以达成生活改善与社会正义的双重目标。主流社会工作实务的服务化趋势,导致优势视角下弱势服务对象的内部分化、资源占有差异、抗争资源优势化等权力议题被忽视。米利亚姆罗的“未被识别的... 详细信息

社会工作优势视角通过发掘服务对象的优势资源,以达成生活改善与社会正义的双重目标。主流社会工作实务的服务化趋势,导致优势视角下弱势服务对象的内部分化、资源占有差异、抗争资源优势化等权力议题被忽视。米利亚姆罗的“未被识别的文化货币”为“以抵抗重建优势视角”提供了理论资源,即把服务对象的生存策略甚至抗争本身看成其优势所在,拓展了“何为优势”的资源范畴;关注弱势群体的内部分化与资源占有差异,重构了“谁的优势”的主体归属;以合法化侵蚀达成物质诉求,平衡了“优势何为”的功能指向。“未被识别的文化货币”对优势视角的拓展,为社会工作培育弱势群体“抵抗的优势化”提供了路径,但也需要反思其群体扩散、本土适应和应用扩展等理论与现实局限。

关键词：优势视角未被识别的文化货币日常抵抗抵抗的优势化

MoS2 as a long-life host material for potassium ion intercalation

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Nano Research 2017年第4期10卷 1313-1321页

作者： xiaodi ren Qiang Zhao William D. McCulloch Yiying Wu Department of Chemistry and Biochemistry The Ohio State University 151 W Woodruff Ave Columbus OH 43210 USA College of Chemical Engineering Sichuan University Chengdu 610065 China

Electrochemical potassium ion intercalation into two-dimensional layered MoS2 was studied for the first time for potential applications in the anode in potassium-based batteries. X-ray diffraction analysis indicated that an intercalated potassium compound, hexagonal K0.4MoS2, formed during the intercalation process. Despite the size of K^＋, MoS2 was a long-life host for repetitive potassium ion intercalation and de-intercalation with a capacity retention of 97.5% after 200 cycles. The diffusion coefficient of the K^＋ ions in KxMoS2 was calculated based on the Randles-Sevcik equation. A higher K^＋ intercalation ratio not only encountered a much slower K^＋ diffusion rate in MoS2, but also induced MoS2 reduction. This study shows that metal dichalcogenides are promising potassium anode materials for emerging K-ion, K-O2, and K-S batteries.

关键词： potassium ion intercalation potassium battery MoS2 phase evolution potassium ion diffusion

Durable semi-crystalline interphase engineering to stabilize high voltage Ni-rich cathode in dilute ether electrolyte

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Journal of Energy Chemistry 2023年第4期79卷 110-117页

作者： Zhuangzhuang Cui Shunqiang Chen Qingshun Nian Yecheng Li Yawei Chen Bing-Qing Xiong Zihong Wang Zixu He Shuhong Jiao xiaodi ren School of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026AnhuiChina

Ethers are promising electrolyte solvents for secondary Li metal batteries because of their excellent reduction ***,their oxidation stability has been mostly relying on the high concentration approach,and limited progress has been made on building effective interphase to protect the cathode from the corrosion of the *** this work,we construct a semi-crystalline interfacial layer on the surface of Li(Ni_(0.8)Co_(0.1)Mn_(0.1))O_(2)cathode that can achieve improved electrochemical stability in the highly corrosive chemical environment formed by the decomposition of ether *** from traditional brittle crystalline interphases,the optimized semi-crystalline layer with low modulus and high ionic conductivity can effectively relieve electrode strain and maintain the integrity of the interface *** to this design,the continuous oxidation decomposition of ether-based electrolytes could be significantly suppressed and the battery shows outstanding cycling stability(84%capacity retention after 300 cycles).This article provides a solution to address the oxidation instability issue of ether-based electrolytes.

关键词： Cathode/electrolyte interphase Semi-crystalline Ether electrolyte High-voltage cathode Li-metal batteries

Structure, variation and assembly processes of bacterial communities in different root-associated niches of tomato under periodic drought and nitrogen addition

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Pedosphere 2024年第5期34卷 892-904页

作者： Dan HE Ruifeng GAO Honghong DONG xiaodi LIU Lijuan ren Qinglong WU Qing YAO Honghui ZHU Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) Key Laboratory of Agricultural Microbiomics and Precision Application (MARA) State Key Laboratory of Applied Microbiology Southern China Institute of Microbiology Guangdong Academy of Sciences College of Plant Protection South China Agricultural University Department of Ecology Institute of Hydrobiology Jinan University College of Horticulture South China Agricultural University

Root-associated bacteria play a vital role in the growth and adaptation of host plants to drought stress. These bacteria can be classified as rhizoplane and rhizosphere bacteria based on their distance from the root surface. Tomato plants are often exposed to periodic drought and nitrogen (N) addition throughout their life cycle, but the impacts of these factors on the plant and root-associated bacteria are not well understood. To gain insight into this relationship, we conducted an experiment to monitor the effects of periodic drought and N addition on rhizoplane and rhizosphere bacteria of tomato plants. Drought and N addition had interactive effects on plant and soil properties, which varied with the timing of drought. There were clear divergences in community traits such as alpha diversity, beta diversity, and network topological features between the two types of bacteria. The rhizoplane bacteria showed lower alpha diversity but higher beta diversity and were more sensitive to drought and N addition than the rhizosphere bacteria. Nitrogen addition could downsize the effects of drought on rhizoplane bacterial community compositions. The higher proximity to the root might induce a community to develop more cooperation between different members to cope with plant metabolites, as revealed by the more connected and modularized community network of the rhizoplane bacteria. Drought at the seedling stage had great legacy effects on plant and soil properties. It may enhance selection, cause the dominance of deterministic processes in the assembly of rhizoplane bacteria, and reduce bacterial community network complexity. In conclusion, N addition could interact with drought in affecting tomato plants and their root-associated bacteria, depending on the timing of drought and the fineness of root niches. The higher sensitivity of rhizoplane bacteria to drought and N addition calls for more research due to their higher proximity and importance to plants in future environment

关键词： alpha diversity beta diversity co-occurrence network community composition drought stress node-level network feature rhizoplane bacteria rhizosphere bacteria

Concentrated ternary ether electrolyte allows for stable cycling of a lithium metal battery with commercial mass loading high-nickel NMC and thin anodes

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Carbon Energy 2023年第3期5卷 2-18页

作者： Jun Yang Xing Li Ke Qu Yixian Wang Kangqi Shen Changhuan Jiang Bo Yu Pan Luo Zhuangzhi Li Mingyang Chen Bingshu Guo Mingshan Wang Junchen Chen Zhiyuan Ma Yun Huang Zhenzhong Yang Pengcheng Liu Rong Huang xiaodi ren David Mitlin School of New Energy and Materials Southwest Petroleum UniversityChengduChina Energy Storage Research Institute Southwest Petroleum UniversityChengduChina Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina China Key Laboratory of Polar Materials and Devices(MOE) Department of ElectronicsEast China Normal UniversityShanghaiChina Materials Science Program and Texas Materials Institute The University of Texas at AustinAustinTexasUSA Beijing Computational Science Research Center BeijingChina School of Materials Science and Engineering Center for Green Innovation University of Science and Technology BeijingBeijingChina Department of Materials Science and Engineering Hefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefeiAnhuiChina

A new concentrated ternary salt ether-based electrolyte enables stable cycling of lithium metal battery(LMB)cells with high-mass-loading(13.8 mg cm^(−2),2.5 mAh cm^(−2))NMC622(LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2))cathodes and 50μm Li ***“CETHER-3,”this electrolyte is based on LiTFSI,LiDFOB,and LiBF4 with 5 vol%fluorinated ethylene carbonate in 1,***-cial carbonate and state-of-the-art binary salt ether electrolytes were also tested as *** CETHER-3,the electrochemical performance of the full-cell battery is among the most favorably reported in terms of high-voltage cycling *** example,LiNi_(x)Mn_(y)Co_(1-x-y)O_(2)(NMC)-Li metal cells retain 80%capacity at 430 cycles with a 4.4 V cut-off and 83%capacity at 100 cycles with a 4.5 V cut-off(charge at C/5,discharge at C/2).According to simulation by density functional theory and molecular dynamics,this favorable performance is an outcome of enhanced coordination between Li^(+)and the solvent/salt *** advanced microscopy(high-resolution transmission electron microscopy,scanning electron microscopy)and surface science(X-ray photoelectron spectroscopy,time-of-fight secondary ion mass spectroscopy,Fourier-transform infrared spectroscopy,Raman spectroscopy),it is demonstrated that a thinner and more stable cathode electrolyte interphase(CEI)and solid electrolyte interphase(SEI)are *** CEI is rich in lithium sulfide(Li_(2)SO_(3)),while the SEI is rich in Li_(3)N and *** cycling,the CEI/SEI suppresses both the deleterious transformation of the cathode R-3m layered near-surface structure into disordered rock salt and the growth of lithium metal dendrites.

关键词： concentrated electrolyte density functional theory ether electrolyte high‐nickel cathode high‐voltage battery molecular dynamics

农村散煤治理对农民生活的影响及其环境风险防范--以山东省滨州市Y村为例

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鄱阳湖学刊 2020年第4期 85-92,127页

作者：任晓迪中国社会科学院大学北京102400

农村散煤治理有防治雾霾污染,推动农村现代化和城乡服务一体化,提升农村人居环境等多重功效,但家庭能源使用结构变化的同时也给家庭关系和乡村社会环境带来一些负面影响。Y村散煤治理的经验表明,农村家庭“煤改气”工程既能推动农民家... 详细信息

农村散煤治理有防治雾霾污染,推动农村现代化和城乡服务一体化,提升农村人居环境等多重功效,但家庭能源使用结构变化的同时也给家庭关系和乡村社会环境带来一些负面影响。Y村散煤治理的经验表明,农村家庭“煤改气”工程既能推动农民家庭生活现代化和关系个体化,也会产生能源设施安全隐患、农业废弃物垃圾化等环境风险,以及家庭能源结构“去煤化”的非持续性问题。在充分肯定农村散煤治理提升农民获得感和现代生活质量的同时,既需要重构家庭交往结构以弥合家庭关系碎片化,也需要通过安全与环境教育、农业废弃物循环利用、激发农民主体性等举措,实现农村清洁能源的生活嵌入和乡村契合。

关键词：农村散煤治理清洁能源环境风险

煤矿主运输带式输送机故障监测和防治系统研究

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中国煤炭 2014年第4期40卷 73-75页

作者：朱艳军任晓迪席冉中煤平朔煤业有限责任公司山西省朔州市036000 国家安全生产监督管理总局信息研究院北京市朝阳区100029

煤矿井下主运输带式输送机经常发生胶带损伤、跑偏、打滑、断带、电机定子超温以及煤仓堆煤等故障,这些故障严重影响煤矿的正常生产。根据煤矿主运输带式输送机各种故障的原理,利用自动检测、声光预测和报警等技术,研制了一种多功能带... 详细信息

煤矿井下主运输带式输送机经常发生胶带损伤、跑偏、打滑、断带、电机定子超温以及煤仓堆煤等故障,这些故障严重影响煤矿的正常生产。根据煤矿主运输带式输送机各种故障的原理,利用自动检测、声光预测和报警等技术,研制了一种多功能带式输送机自动控制和故障诊断系统,介绍了主运输带式输送机故障诊断监测系统的结构组成,阐述了主运输带式输送机常见故障的监测和诊断方法。

关键词：带式输送机故障诊断监测方法防治系统

快装站高能效防冻液自动喷洒系统的研究与应用

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煤矿机电 2021年第4期42卷 18-23页

作者：任晓迪张晓刚中煤平朔集团有限公司煤炭洗选中心山西朔州036006 太原理工大学新型传感器与智能控制教育部和山西省重点实验室山西太原030024

目前运煤列车车厢防冻液喷洒普遍存在防冻液浪费严重、环境污染、系统可靠性与效率低下等问题。重点介绍了快装站运煤列车防冻液高能效自动喷洒系统,此喷洒系统采用基于闭式泵控制的大臂升降技术及大臂低能耗回转驱动技术,实现了车厢之... 详细信息

目前运煤列车车厢防冻液喷洒普遍存在防冻液浪费严重、环境污染、系统可靠性与效率低下等问题。重点介绍了快装站运煤列车防冻液高能效自动喷洒系统,此喷洒系统采用基于闭式泵控制的大臂升降技术及大臂低能耗回转驱动技术,实现了车厢之间自动停喷,不仅降低了运行中的能耗,而且提高了系统的工作效率与可靠性,解决了防冻液浪费以及环境污染问题,具有广阔的应用前景。

关键词：防冻液自动喷洒高能效快装站