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玉米品种对根际微生物利用光合碳的影响

土壤学报 2016年第5期53卷 1286-1295页

作者：李增强赵炳梓张佳宝土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所) 南京210008 中国科学院大学北京100049

通过温室盆栽试验,以玉米品种郑单958(ZD)和陕单8806(SD)为对象,采用磷脂脂肪酸(PLFA)联合^(13)CO_2标记技术对不同品种玉米光合同化碳在玉米—根际土壤系统的分配特征以及利用新光合同化碳的微生物群落进行了定量研究。结果表明:ZD的... 详细信息

通过温室盆栽试验,以玉米品种郑单958(ZD)和陕单8806(SD)为对象,采用磷脂脂肪酸(PLFA)联合^(13)CO_2标记技术对不同品种玉米光合同化碳在玉米—根际土壤系统的分配特征以及利用新光合同化碳的微生物群落进行了定量研究。结果表明:ZD的生物量及其植株和根际土壤的^(13)C含量均显著高于相应的SD处理,说明玉米品种能够显著影响光合同化碳的分配。根际土壤中部分PLFA-C百分比和PLFA-^(13)C百分比在两品种间显著不同,且ZD种植土壤中表征细菌(包括革兰氏阳性菌(G^+)和革兰氏阴性菌(G^-))和真菌的PLFA-C及PLFA-^(13)C含量均显著高于种植SD土壤。ZD土壤中表征G^+、G^-、真菌和放线菌的PLFA-^(13)C含量分别占总PLFA-^(13)C的2.4%、33%、35%和0.3%,而上述参数在SD土壤中的值分别为5.9%、55%、11%和1.1%。ZD处理较SD处理提高了真菌/细菌比值,降低了环丙脂肪酸/前体比值。本研究表明根际微生物对光合同化碳的利用受玉米品种的显著影响,G^-和真菌是利用光合同化碳的主要群落。

关键词：玉米品种 ^13CO2标记根际沉积物根际微生物磷脂脂肪酸

Preliminary Design of ITER TBM with Helium-Cooled and Solid Breeder Concept

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Southwestern Institute of Physics Annual Report

Southwestern Institute of Physics Annual Report 2005年第1期 87-89页

作者： FENG Kaiming ZHANG Guoshu WANG Xiaoyu CHEN Zhi YUAN Tao ZHAO Zhou li zengqiang GAO Chunming HU Gang

ITER will play a very important role in first integrated blanket testing in fusion environment. Some DEMO blanket relevant technologies, such as tritium self-sufficiency, extraction of high-grade heat, design criteria... 详细信息

关键词： ITER TBM Tritium breeder

Leaching kinetics of fluorine during the aluminum removal from spent li-ion battery cathode materials

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Journal of Environmental Sciences 2024年第4期138卷 312-325页

作者： Shengjie li Jianxin Zhu Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

The high content of aluminum(Al)impurity in the recycled cathode powder seriously affects the extraction efficiency of Nickel,Cobalt,Manganese,and lithium resources and the actual commercial value of recycled materials,so Al removal is crucially important to conform to the industrial standard of spent li-ion battery cathode *** this work,we systematically investigated the leaching process and optimum conditions associated with Al removal from the cathode powder materials collected in a wet cathode-powder peeling and recycling production line of spent li-ion batteries(liBs).Moreover,we specifically studied the leaching of fluorine(F)synergistically happened along with the removal process of Al,which was not concerned about in other studies,but one of the key factors affecting pollution prevention in the recovery *** mechanism of the whole process including the leaching of Al and F from the cathode powder was indicated by using NMR,FTIR,and XPS,and a defluoridation process was preliminarily investigated in this *** leaching kinetics of Al could be successfully described by the shrinking core model,controlled by the diffusion process and the activation energy was 11.14 kJ/***,the leaching of F was attributed to the dissolution of liPF6and decomposition of PVDF,and the kinetics associated was described by Avrami *** interaction of Al and F is advantageous to realize the defluoridation to some *** is expected that our investigation will provide theoretical support for the large-scale recycling of spent liBs.

关键词： Al removal F leaching Cathode powder Heating alkali leaching Leaching kinetics

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金刚石刀具的研磨工艺参数模型

金刚石与磨料磨具工程 2006年第2期26卷 41-43页

作者：李增强孙涛宗文俊董申哈尔滨工业大学精密工程研究所

本文基于二次回归分析的试验方法,对分别以(110)和(100)晶面为刀具前、后刀面的金刚石刀具进行了研磨工艺实验,建立了对应的研磨工艺参数模型,该模型可以用于预报研磨所能得到的刃口半径值以及计算对应于特定刃口半径值的参数组合;通过... 详细信息

本文基于二次回归分析的试验方法,对分别以(110)和(100)晶面为刀具前、后刀面的金刚石刀具进行了研磨工艺实验,建立了对应的研磨工艺参数模型,该模型可以用于预报研磨所能得到的刃口半径值以及计算对应于特定刃口半径值的参数组合;通过比较一次回归项系数,得到了研磨方向、研磨速率、研磨压力及磨粉粒度对刃口半径值的影响因子,分别为:0.282,0.082,0.121及0.515;利用单一因素分析分别画出了研磨方向、研磨速率、研磨压力及磨料粒度与刃口半径值的关系曲线;以最小刃口半径值为目标,使用多元分析方法,获得了最优研磨参数组合,试验验证结果与计算值相符。

关键词：金刚石刀具研磨工艺二次回归分析最优研磨参数组合

The 3×D Neutronics Calculation of the 2x6 CH HCSB TBM

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The 3×D Neutronics Calculation of the 2x6 CH HCSB TBM

融合跨说话人韵律迁移的多语种文本到波形生成

Ninth China-Japan Symposium on Materials for Advanced Energy Systems and Fission & Fusion Engineering Jointed with CAS-JSPS Core-university Program Seminar on Fusion Materials, System and Design Integration

作者： li zengqiang~* Feng Kaiming Zhang Guoshu Southwestern Institute of Physics,P.O.Box 432,Chengdu 610041,China

The neutronics calculations for the new 2x6 CHSB TBM model have been performed with the Monte Carlo code MCNP/4C,and nuclear cross-section data from the FENDL-2.0 data library.A 20 degree torus sector model,which is consisted of CHSB TBM and the ITER-FEAT,forms the basis of the neutronics *** 2 million source neutron histories were tracked in the MCNP calculations to ensure a sufficient statistical accuracy for the calculated nuclear responses. In the calculation,liSiO（80 at % li-6 enrichment）is as Breeder material,and EUROFER as structural *** order to improve the distribution of power density in the blanket module,the arrangement of the Be neutron multiplier in the breeding zone has been *** Be pebbles with diameters 0.5 mm and 1 mm were chosen for the *** power density distribution has been calculated in the poloidal zones of the TBM.A peak power density of 6.26MW/m under an average neutron wall loading of 0.78MW/m occurs at the end of first *** energy deposition in HCSB TBM is *** tritium generated amounts to about 0.0123 g/d under the ITER standard operation condition.

关键词： D Neutronics Calculation of the 2x6 CH HCSB TBM The 3

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声学学报 2024年第1期49卷 171-180页

作者：尚增强张鹏远王丽中国科学院声学研究所语言声学与内容理解重点实验室北京100190 中国科学院大学北京100049

在多语种语音合成任务中,由于单人多语种数据稀缺,让一个音色同时支持多种语言合成变得非常困难。不同于已有方法仅在声学模型中解耦音色和发音,提出一种融合跨说话人韵律迁移的端到端多语种语音合成方法,采用两级层级条件变分自编码器... 详细信息

在多语种语音合成任务中,由于单人多语种数据稀缺,让一个音色同时支持多种语言合成变得非常困难。不同于已有方法仅在声学模型中解耦音色和发音,提出一种融合跨说话人韵律迁移的端到端多语种语音合成方法,采用两级层级条件变分自编码器直接建模从文本到波形的生成过程,并解耦了音色、发音和韵律等信息。该方法通过迁移目标语种已有说话人的韵律风格来改善跨语种合成的韵律。实验表明,所提模型在跨语种语音生成上获得了3.91和4.01的自然度和相似度平均意见得分,相比基线跨语种合成字错误率降低到5.85%。韵律迁移以及消融实验也进一步证明了该方法的有效性。

关键词：多语种语音合成韵律迁移变分自编码器韵律解耦

SEI/dead li-turning capacity loss for high-performance anode-free solid-state lithium batteries

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Journal of Energy Chemistry 2024年第9期96卷 145-152页

作者： Qianwen Yin Tianyu li Hongzhang Zhang Guiming Zhong Xiaofei Yang Xianfeng li Division of Energy Storage Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Long-Duration and Large-Scale Energy Storage Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of Advanced Spectro-Electrochemistry and lithium-Ion Batteries Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Anode-free solid-state lithium metal batteries(AF-SSLBs)have the potential to deliver higher energy density and improved safety beyond lithium-metal ***,the unclear mechanism for the fast capacity decay in AF-SSLBs,either determined by dead li or solid electrolyte interface(SEI),limits the proposal of effective strategies to prolong cycling *** clarify the underlying mechanism,herein,the evolution of SEI and dead li is quantitatively analyzed by a solid-state nuclear magnetic resonance(ss-NMR)technology in a typical liPF6-based polymer *** results show that the initial capacity loss is attributed to the formation of SEI,while the dead li dominates the following capacity loss and the growth rate is 0.141 mA h cm^(−2)cycle−*** reduce the active li loss,the combination of inorganic-rich SEI and self-healing electrostatic shield effect is proposed to improve the reversibility of li deposition/dissolution behavior,which reduces the capacity loss rate for the initial SEI and following dead li generation by 2.3 and 20.1 folds,*** a result,the initial Coulombic efficiency(ICE)and stable CE increase by 15.1%and 15.3%in li-Cu cells,which guides the rational design of high-performance AF-SSLBs.

关键词： Solid-state lithium batteries Solid-state NMR Anode-free SEI Dead li

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油田单井拉油罐加热时段优化

石油石化节能 2023年第6期13卷 48-53页

作者：李增强胜利油田分公司安全环保质量管理部

随着环保要求提高,油田单井拉油罐加热装置逐步由燃气加热改为电加热,增加了油田的电力消耗及运行成本,日均耗电约35×10^(4)kWh。目前单井罐加热温度、加热时长控制主要依靠人工经验判断,为保证采出液安全输送,加热温度一般设置较高,... 详细信息

随着环保要求提高,油田单井拉油罐加热装置逐步由燃气加热改为电加热,增加了油田的电力消耗及运行成本,日均耗电约35×10^(4)kWh。目前单井罐加热温度、加热时长控制主要依靠人工经验判断,为保证采出液安全输送,加热温度一般设置较高,高温采出液运输过程中会产生较高的热损失。为有效降低单井拉油过程热损失,通过开展采出液流动性随温度变化的关系研究,确定采出液输送温度低限,针对单井罐储存、罐车拉运、装卸油、输送至分离器处理各项过程中散热损失开展分析,通过测试、理论计算、仿真模拟确定不同环节散热损失及不同时间采出液温度变化情况,以采出液输送温度低限作为终端温度反推确定单井罐加热温度及加热时长,并选取油田2处高耗能单井罐开展现场应用及能耗分析,通过优化单井罐加热时长,加热能耗下降42.86%,过程中散热损失降低17.1%,合理降低了单井拉油过程能耗。

关键词：保温罐车热分析加热能耗单井罐

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Theoretical Design of Defects as a Driving Force for Ion Transport in li_(3)OBr Solid Electrolyte

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Energy & Environmental Materials 2024年第3期7卷 143-153页

作者： Xingyun Luo Yanlu li Xian Zhao State Key Lab of Crystal Materials and Institute of Crystal Materials Shandong UniversityJinan 250100China Center for Optics Research and Engineering Shandong UniversityQingdao 266237China

Due to ever-increasing concerns about safety issues in using li ionic batteries,solid electrolytes have extensively *** li-rich antiperovskite li_(3)OBr has been considered as a promising solid electrolyte candidate,but it still suffers challenges to achieve a high ionic conductivity owing to the high intrinsic symmetry of the crystal ***,we presented a design strategy that introduces various point defects and grain boundaries to break the high lattice symmetry of li_(3)OBr crystal,and their effect and microscopic mechanism of promoting the migration of li-ion were explored *** has been found that li_(i)are the dominant defects responsible for the fast li-ion diffusion in bulk li_(3)OBr and its surface,but they are easily trapped by the grain boundaries,leading to the annihilating of the Frenkel defect pair V'_(li)+li_(i),and thus limits the V'_(li)diffusion at the grain *** V_(Br)defect near the grain boundaries can effectively drive V'_(li)across the grain boundary,thereby converting the carrier of li^(+)migration from li,in the bulk and surface to V'_(li)at the grain boundary,and thus improving the ionic conductivity in the whole li_(3)OBr *** work provides a comprehensive insight into the li^(+)transport and conduction mechanism in the li_(3)OBr *** opens a new way of improving the conductivity for all-solid-state li electrolyte material through the defect design.

关键词： defects density functional theory ionic migration solid electrolyte