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CO_(2)emission and source partitioning from carbonate and non-carbonate soils during incubation

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Pedosphere 2022年第3期32卷 452-462页

作者： Yi ZHAO Roland BOL Zhaoan SUN Yuping ZHUGE Xiaoxia SHI wenliang wu Fanqiao MENG Beijing Key Laboratory of Biodiversity and Organic Farming College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193(China) Institute of Bio-and Geosciences Agrosphere(IBG-3)Forschungszentrum Jülich GmbHJülich 52425(Germany) Key Laboratory of Biology and Molecular Biology in University of Shandong College of Biological and Agricultural EngineeringWeifang UniversityWeifang 261061(China) National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources College of Resources and EnvironmentShandong Agricultural UniversityTai'an 271018(China) SinoCarbon Innovation&Investment Jiangsu Co. Ltd.(SCII)Nanjing 210046(China)

The accurate quantification and source partitioning of CO_(2)emitted from carbonate(i.e.,Haplustalf)and non-carbonate(i.e.,Hapludult)soils are critically important for understanding terrestrial carbon(C)*** two main methods to capture CO_(2)released from soils are the alkali trap method and the direct gas sampling method.A 25-d laboratory incubation experiment was conducted to compare the efficacies of these two methods to analyze CO_(2)emissions from the non-carbonate and carbonate-rich *** isotopic fraction was introduced into the calculations to determine the impacts on partitioning of the sources of CO_(2)into soil organic carbon(SOC)and soil inorganic carbon(SIC)and into C3 and/or C4 plant-derived *** results indicated that CO_(2)emissions from the non-carbonate soil measured using the alkali trap and gas sampling methods were not significantly *** the carbonate-rich soil,the CO_(2)emission measured using the alkali trap method was significantly higher than that measured using the gas sampling method from the 14 th day of incubation *** SOC and SIC each accounted for about 50%of total soil C in the carbonate-rich soil,SOC decomposition contributed 57%–72%of the total CO_(2)*** both non-carbonate and carbonate-rich soils,the SOC derived from C4 plants decomposed faster than that originated from C3 *** propose that for carbonate soil,CO_(2)emission may be overestimated using the alkali trap method because of decreasing CO_(2)pressure within the incubation jar,but underestimated using the direct gas sampling *** gas sampling interval and ambient air may be important sources of error,and steps should be taken to mitigate errors related to these factors in soil incubation and CO_(2)quantification studies.

关键词： alkali trap C3/C4 plant inorganic carbon stock isotope fractionation organic carbon stock

基于中医传承辅助平台探析陈帮明主任治疗慢性肾衰病的用药经验

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上海医药 2024年第9期45卷 37-39,47页

作者：孔越吴漫谢晨璐吴文良王家平刘揭杨太旺九江市中医医院药剂科临床药学室九江332000 九江市中医医院肾病科九江332000

目的:基于中医传承辅助平台探析陈帮明主任治疗慢性肾衰病的用药经验,旨在更好地指导临床实践。方法:收集整理陈帮明主任2022年1月—2023年3月于我院门诊为接诊的慢性肾衰病患者所开的120首处方。利用“中医传承辅助平台管理系统(V2.5)... 详细信息

目的:基于中医传承辅助平台探析陈帮明主任治疗慢性肾衰病的用药经验,旨在更好地指导临床实践。方法:收集整理陈帮明主任2022年1月—2023年3月于我院门诊为接诊的慢性肾衰病患者所开的120首处方。利用“中医传承辅助平台管理系统(V2.5)”软件,挖掘处方中出现的药物频次、药物用药模式、组方规律,并演化出新方组合。结果:处方中使用频次≥50的药物有23味,方剂“组方规律”,设定支持度个数为69,置信度为0.9,出现频次达110次及以上的药物组合有25组,衍化得到新方7首。结论:基于这个系统,可全面、客观地总结陈帮明主任的用药规律,以进一步提高临床疗效。

关键词：慢性肾衰病中医传承辅助平台用药经验

Photoredox-catalyzed amide-directed selective sp^3 C–H bond functionalization

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Science Bulletin 2016年第24期61卷 1892-1893页

作者： wenliang wu Weiping Su State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Over the past century,transition metal-catalyzed crosscoupling reactions have evolved to be among the most used C–C bond forming reactions in chemical *** important remaining challenge is to synthesis

关键词：过渡金属催化 C-H键氧化还原 sp3 活化定向选择交叉偶联反应酰胺

中国农业生态学与生态农业研究早期阶段的“燎原星火”——以1975年至2000年公开的部分资料为依据

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农业环境科学学报 2024年第3期43卷 476-487页

作者：唐建军陈欣胡亮亮章家恩吴文良林文雄曹林奎曹凑贵李萍萍李凤民王克林骆世明浙江大学生命科学学院杭州310058 华南农业大学资源环境学院广州510642 中国农业大学资源与环境学院北京100193 福建农林大学生命科学学院福州350002 上海交通大学农业与生物学院上海200240 华中农业大学植物科学技术学院武汉430070 南京林业大学生态与环境学院南京210037 兰州大学生态学院兰州730000 中国科学院亚热带农业生态研究所长沙410125 华南农业大学热带亚热带生态研究所广州510642

20世纪的最后25年是中国内地的农业生态与生态农业理念推广、科研探索及人才队伍成长的早期阶段。本文基于中国知网系统、国家自然科学基金委员会大数据知识管理服务门户、中国生态学学会官网、中国科学院野外台站网,《中国生态农业学... 详细信息

20世纪的最后25年是中国内地的农业生态与生态农业理念推广、科研探索及人才队伍成长的早期阶段。本文基于中国知网系统、国家自然科学基金委员会大数据知识管理服务门户、中国生态学学会官网、中国科学院野外台站网,《中国生态农业学报》《农业环境科学学报》《农业资源与环境学报》《生态与农村环境学报》《农业现代化研究》《生态学杂志》等多种农业生态学与生态农业有关学术期刊网站及孔夫子旧书网,对1975—2000年期间,中国内地从事农业生态学与生态农业研究比较有影响力的学术平台(单位)和学者、公开出版的部分著作名录、国家自然科学基金生态学领域(C03)与农业生态相关的立项项目、中国知网系统内中文学术期刊发表的相关论文要素分析(发表年份、作者、所在单位、刊载期刊等)、被引次数及相关期刊创刊号特邀专论为依据的重要学术论文和学术论著题录进行了粗略的统计和分析,分析描述了早期阶段农业生态学及生态农业研究的热点及其变化过程。此外,本文还陈列和介绍了中国生态学学会农业生态专业委员会自成立至2000年期间组织和主办的十届全国农业生态学学术研讨会情况以及专业委员会的工作发展。本文为关心和支持中国农业生态学与生态农业建设的各界人士了解20世纪最后25年里中国农业生态学领域的大致概貌提供了一个粗略小结,也是对既往时代的认同、肯定和对现世同人的鼓励鞭策。

关键词：农业生态学与生态农业中国知网系统科学事件资料挖掘数据比较

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The Caching and Pricing Strategy for Information-Centric Networking with Advertisers’Participation

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China Communications 2024年第3期21卷 283-295页

作者： Zheng Quan Yan wenliang wu Rong Tan Xiaobin Yang Jian Yuan Liu Xu Zhenghuan Laboratory for Future Networks Department of AutomationUniversity of Science and Technology of ChinaHefei 230026China Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefei 230088China Institute of Advanced Technology University of Science and Technology of ChinaHefei 230088China Suzhou Nuclear Power Research Institute Suzhou 215004China National Engineering Laboratory for Public Safety Risk Perception and Control by Big Data(NEL-PSRPC) China Academy of Electronics and Information Technology of CETCBeijing 100041China

As users’access to the network has evolved into the acquisition of mass contents instead of IP addresses,the IP network architecture based on end-to-end communication cannot meet users’***,the Information-Centric Networking(ICN)came into *** a technical point of view,ICN is a promising future network *** and customizing a reasonable pricing mechanism plays a positive role in promoting the deployment of *** current research on ICN pricing mechanism is focused on paid ***,we study an ICN pricing model for free content,which uses game theory based on Nash equilibrium to *** this work,advertisers are considered,and an advertiser model is established to describe the economic interaction between advertisers and ICN *** solution can formulate the best pricing strategy for all ICN entities and maximize the benefits of each *** extensive analysis and numerical results show that the proposed pricing framework is significantly better than existing solutions when it comes to free content.

关键词： advertisers cache free content Information-Centric Networking pricing strategy

Channel Correlation Based User Grouping Algorithm for Nonlinear Precoding Satellite Communication System

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China Communications 2024年第1期21卷 200-214页

作者： Ke Wang Baorui Feng Jingui Zhao wenliang Lin Zhongliang Deng Dongdong Wang Yi Cen Genan wu School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China School of Information Engineering Minzu University of ChinaBeijing 100081China Institute of Spacecraft Application System Engineering China Academy of Space TechnologyBeijing 100094China Academy for Network and Communications of CETC Science and Technology on Communication Networks LaboratoryShijiazhuang 050081China

Low Earth Orbit(LEO)multibeam satellites will be widely used in the next generation of satellite communication systems,whose inter-beam interference will inevitably limit the performance of the whole *** precoding such as Tomlinson-Harashima precoding(THP)algorithm has been proved to be a promising technology to solve this problem,which has smaller noise amplification effect compared with linear ***,the similarity of different user channels(defined as channel correlation)will degrade the performance of THP *** this paper,we qualitatively analyze the inter-beam interference in the whole process of LEO satellite over a specific coverage area,and the impact of channel correlation on Signal-to-Noise Ratio(SNR)of receivers when THP is *** user grouping algorithm is proposed based on the analysis of channel correlation,which could decrease the number of users with high channel correlation in each precoding group,thus improve the performance of ***,our algorithm is designed under the premise of co-frequency deployment and orthogonal frequency division multiplexing(OFDM),which leads to more users under severe inter-beam interference compared to the existing research on geostationary orbit satellites broadcasting *** results show that the proposed user grouping algorithm possesses higher channel capacity and better bit error rate(BER)performance in high SNR conditions relative to existing works.

关键词： channel correlation inter-beam interference multibeam satellite Tomlinson-Harashima precoding user grouping

Payments for watershed ecosystem services:mechanism,progress and challenges

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Ecosystem Health and Sustainability 2018年第1期4卷 14-30页

作者： Danyang Feng wenliang wu Long Liang Li Li Guishen Zhao College of Resources and Environmental Sciences China Agriculture UniversityBeijingChina International Center for Research on Ecology and Sustainable Development China Agriculture UniversityBeijingChina

Introduction:Payment for watershed ecosystem services(PWES),a policy instrument for compensating for the externality of watershed ecosystem/environmental services,has gained in policy importance in China over the past two *** scholars and researchers have contributed to the conceptualization of this policy framework by developing operational mechanisms as well as compensation standards for ***:This article reviews 27 PWES schemes piloted in China and in 10 other countries,with a particular emphasis on successful cases of land-use conversion programs,such as the Paddy Land to Dry Land Program and Sloping Land Conversion Program that have been implemented in ***:By comparing different cases,the authors attempt to answer the following questions:what were the ecological and institutional contexts in which these schemes were established and how did they work?What were the actual efficiencies and impacts of these piloted schemes?Which scheme worked better in certain ecological,socio-economic,and institutional contexts?Conclusion:Based on case studies,the authors draw the following conclusions about Chinese PWES:(1)to establish an acceptable standard for a PWES program,it is necessary to estimate the economic and social costs regarding the livelihoods of households;(2)multistakeholder negotiation mechanism for PWES,including intermediaries,such as the local government,NGO/NPOs,village committees,and user associations,should be used;(3)ES,non-market services,should acquire positive externalities to accomplish an optimal win–win pattern concerning both environmental goals and the livelihoods of local resource users.

关键词： Payment forwatershed ecosystem services case study compensation standard multi-stakeholder negotiation mechanism win-win pattern

Improved RF power performance via electrostatic shielding effect using AlGaN/GaN/graded-AlGaN/GaN double-channel structure

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Science China(Information Sciences) 2024年第4期67卷 341-342页

作者： Chunzhou SHI Ling YANG Meng ZHANG Hao LU Mei wu Bin HOU Xuerui NIU Qian YU wenliang LIU Wenze GAO Xiaohua MA Yue HAO School of Advanced Materials and Nanotechnology Xidian University State Key Discipline Laboratory of Wide Bandgap Semiconductor Technology Xidian University

GaN-based high-electric-mobility transistors(HEMTs) have been investigated thoroughly because of their promising applications in high-frequency,-voltage, and-power applications. However, the theoretical material limit prevents conventional single-heterostructure GaN HEMTs from achieving high performance despite numerous efforts [1–3].

关键词： Drain current

Preparation of Exo-tetrahydrodicyclopentadiene Using SiW/Hβ Catalyst

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China Petroleum Processing & Petrochemical Technology 2011年第3期13卷 41-46页

作者： Kang Zhuozhuo wu wenliang Zhou Zhiwei (College of Chemistry and Chemical Engineering,Nanjing University of Technology,Nanjing 210009) College of Chemistry and Chemical Engineering Nanjing University of Technology Nanjing 210009 China

Exo-tetrahydrodicyclopentadiene (exo-TCD) is an important high-energy *** acid (SiW) immobilized on H-type β zeolite (Hβ) at room temperature were used to prepare the Hβ zeolite catalysts with different SiW *** performances of the catalysts were investigated during the preparation of exo-TCD via isomerization of endo-tetrahydrodicyclopentadiene (endo-TCD).The properties of catalysts were characterized by XRD,temperature pro-grammed desorption of ammonia (NH 3-TPD),FT-IR,and N 2-adsorption *** was highly dispersed on the surface of Hβ zeolite,and the 10% SiW/Hβ zeolite catalyst had the highest amount of weak acidity among all SiW/Hβ zeolite *** influence of different factors on isomerization reaction was *** a reaction temperature of 240 ℃,a n(cyclohexane) /n(endo-TCD) ratio of 10,a m(catalyst) /m(endo-TCD) ratio of 0.3,an initial pressure of 1.0 MPa,and a reaction time of 1.5 h in the presence of 10% SiW/Hβ catalyst calcined at 400 ℃,the conversion of endo-TCD reached up to 92.0%,with the yield of exo-TCD equating to 51.0%.

关键词：分子筛催化剂四氢制备异构化催化剂催化性能反应温度 TCD X射线衍射