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浙江山区农村饮用水工程建设模式研究与实践

中国给水排水 2024年第16期40卷 94-100页

作者：谭金章朱希望陆旭峰方以晨刘宏远湖州市水务集团有限公司浙江湖州313000 浙江工业大学土木工程学院浙江杭州310023

山区农村饮用水供水方式一直是研究热点之一,为此梳理了山区农村饮用水供水模式、水源地选择、饮用水处理、管网建设及运行管理等方面问题。介绍了浙江某山区农村饮用水工程的建设思路,从扩建规模化水厂、加强水源保护区建设、新建输水... 详细信息

山区农村饮用水供水方式一直是研究热点之一,为此梳理了山区农村饮用水供水模式、水源地选择、饮用水处理、管网建设及运行管理等方面问题。介绍了浙江某山区农村饮用水工程的建设思路,从扩建规模化水厂、加强水源保护区建设、新建输水管网和加压泵站、建设智慧水务平台及其他运行管理等方面措施,总结了这一具有山区特色的农村饮用水工程实践。该工程集中规模化水厂出厂水水质达到《生活饮用水卫生标准》(GB 5749—2022),解决了山区167 km^(2)范围内近3.8万人的饮用水问题,59个山塘的二次开发为50多个村庄拓展了增收致富的渠道。

关键词：山区农村饮用水水源智慧水务

PPy-Encapsulated Na_(2)Li_(2)Ti_(6)O_(14) Composites as High-Performance Anodes for Li-Ion Battery

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Acta Metallurgica Sinica(English Letters) 2022年第11期35卷 1873-1881页

作者： Fan-Fan Wang Nan zhang Ze-chen Lv Yan-Rong Zhu jun-hong zhang Ting-feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Shandong Provincial Key Laboratory of Chemical Energy Storageand Novel Cell Technology Collegeof Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059China School of Resources and Materials Northeastern University atQinhuangdaoQinhuangdao 066004China KeyLaboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004China

Na_(2)Li_(2)Ti_(6)O_(14) as a reliable anode material is becoming a hopeful candidate for Li-ion ***,the pristine Na_(2)Li_(2)Ti_(6)O_(14) usually suffer from bad rate performance and poor cycling stability under high current due to limited diffusion kinetics and poor electrical ***,the PPy-coated Na_(2)Li_(2)Ti_(6)O_(14) composites are successfully obtained via the solid-state method and followed by chemical oxidation process in the first *** results of tests prove that the Na_(2)Li_(2)Ti_(6)O_(14)@PPy composites have better electrochemical performance than the bare Na_(2)Li_(2)Ti_(6)O_(14) because of the excellent electrical conductivity and the special macromolecular architecture of *** particular,the Na_(2) Li_(2) Ti_(6) O_(14) @PPy(4 wt%)exhibits excellent charge capacities of about 223.2,218.0,200.8,184.3 and 172.6 mAh g^(-1) at 50,100,200,300 and500 mA g^(-1),respectively,revealing the best rate capability of all electrode *** Na_(2)Li_(2)Ti_(6)O_(14)@PPy(4 wt%)not only has the highest charge capacity under 0.5 mA g^(-1),but also has the highest capacity retention of 85.12%among all samples after 100 ***,the PPy coating is known as a promising way to improve the electrochemical property of Na_(2)Li_(2)Ti_(6)O_(14).The PPy-coated Na_(2)Li_(2)Ti_(6)O_(14) demonstrates the great prospect as promising negative materials for Li-ion batteries.

关键词： Li-ion battery Anode material Na_(2)Li_(2)Ti_(6)O_(14) PPy coating Electrochemical property

Construction of Na_(2)Li_(2)Ti_(6)O_(14)@LiAlO_(2)Composites as Anode Materials of Lithium-Ion Battery with High Performance

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Acta Metallurgica Sinica(English Letters) 2022年第12期35卷 2047-2056页

作者： Nan zhang Ze-chen Lv Yu-Shen Zhao jun-hong zhang Yan-Rong Zhu Ting-feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology College of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004China Key Laboratory of Dielectric Electrolyte Functional Material Hebei ProvinceQinhuangdao 066004China

In this work,we construct Na_(2)Li_(2)Ti_(6)O_(14)@LiAlO_(2)(NLTO-L)composites by a simple ball milled process and post-calcination in air atmosphere to improve the electrochemical *** thickness of the LiAlO_(2)coating layer is approximate2 *** morphology and particle size of Na_(2)Li_(2)Ti_(6)O_(14)are not dramatically altered after LiAlO_(2)*** samples display similar particles with a size range from 150 to 500 *** LiAlO_(2)coating can supply fast charge transmission paths with good insertion/extraction dynamics of lithium ions and provide an excellent rate performance and cycle performance of as-prepared Na_(2)Li_(2)Ti_(6)O_(14)@LiAlO_(2)***,LiAlO_(2)coating efficiently enhances the rate performance and cycle performance of Na_(2)Li_(2)Ti_(6)O_(14)anode,even at large current *** a result,Na_(2)Li_(2)Ti_(6)O_(14)@LiAlO_(2)(5 wt%)reveals remarkable rate properties with reversible charge capacity of 238.7,214.7,185.8,168.5 and 139.8 mAh g^(-1)at 50,100,200,300 and 500 mA g^(-1),***_(2)Li_(2)Ti_(6)O_(14)@LiAlO_(2)(5 wt%)also possesses a good cycle performance with a de-lithiation capacity of 166.5 mAh g-1 at 500 mA g^(-1)after 200 ***,the corresponding de-lithiation capacity of pure Na_(2)Li_(2)Ti_(6)O_(14)is only 140.1 mAh g^(-1).Consequently,LiAlO_(2)coating is efficeient approach to enhance the electrochemical performances of Na_(2)Li_(2)Ti_(6)O_(14).

关键词： Li-ion batteries Na_(2)Li_(2)Ti_(6)O_(14) LiAlO_(2) Anode material Electrochemical properties

Two-dimensional materials for future information technology: status and prospects

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Science China(Information Sciences) 2024年第6期67卷 1-147页

作者： Hao QIU Zhihao YU Tiange ZHAO Qi zhang Mingsheng XU Peifeng LI Taotao LI Wenzhong BAO Yang CHAI Shula chen Yiqi chen Hui-Ming chenG Daoxin DAI Zengfeng DI Zhuo DONG Xidong DUAN Yuhan feng Yu FU Jingshu GUO Pengwen GUO Yue HAO jun HE Xiao HE Jingyi HU Weida HU Zehua HU Xinyue HUANG Ziyang HUANG Ali IMRAN Ziqiang KONG Jia LI Qian LI Weisheng LI Lei LIAO Bilu LIU Can LIU Chunsen LIU Guanyu LIU Kaihui LIU Liwei LIU Sheng LIU yuan LIU Donglin LU Likuan MA feng MIAO Zhenhua NI Jing NING Anlian PAN Tian-Ling REN Haowen SHU Litao SUN Yue SUN Quanyang TAO Zi-Ao TIAN Dong WANG Hao WANG Haomin WANG Jialong WANG junyong WANG Wenhui WANG Xingjun WANG Yeliang WANG Yuwei WANG Zhenyu WANG Yao WE... School of Electronic Science and Engineering Nanjing University School of Integrated Circuits Interdisciplinary Research Center for Future Intelligent Chips (Chip-X)Nanjing University School of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences School of Physics and Key Lab of Quantum Materials and Devices of the Ministry of Education School of Electronic Science & EngineeringSoutheast University College of Integrated Circuits State Key Laboratory of Silicon and Advanced Semiconductor MaterialsZhejiang University Suzhou Laboratory State Key Laboratory of Integrated Chips and Systems School of MicroelectronicsFudan University Shaoxin Laboratory Department of Applied Physics The Hong Kong Polytechnic University Key Laboratory for Micro-Nano Physics and Technology of Hunan Province College of Materials Science and EngineeringHunan University College of Integrated Circuits Zhejiang University Shenzhen Geim Graphene Center Shenzhen Key Laboratory of Layered Materials for Value-Added ApplicationsTsinghua-Berkeley Shenzhen Institute & Institute of Materials ResearchTsinghua Shenzhen International Graduate SchoolTsinghua University State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZijingang CampusZhejiang University National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences CAS Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications i-LabSuzhou Institute of Nano-Tech and Nano-Bionics (SINANO)Chinese Academy of Sciences College of Chemistry and Chemical Engineering Hunan University Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education) Department of PhysicsRenmin University of China School

Over the past 70 years, the semiconductor industry has undergone transformative changes,largely driven by the miniaturization of devices and the integration of innovative structures and materials. Two-dimensional(2D) materials like transition metal dichalcogenides(TMDs) and graphene are pivotal in overcoming the limitations of silicon-based technologies, offering innovative approaches in transistor design and functionality, enabling atomic-thin channel transistors and monolithic 3D integration. We review the important progress in the application of 2D materials in future information technology, focusing in particular on microelectronics and optoelectronics. We comprehensively summarize the key advancements across material production, characterization metrology, electronic devices, optoelectronic devices, and heterogeneous integration on silicon. A strategic roadmap and key challenges for the transition of 2D materials from basic research to industrial development are outlined. To facilitate such a transition, key technologies and tools dedicated to 2D materials must be developed to meet industrial standards, and the employment of AI in material growth, characterizations, and circuit design will be essential. It is time for academia to actively engage with industry to drive the next 10 years of 2D material research.

关键词： two-dimensional (2D) materials information technology production technology standardization of characterization microelectronicdevices optoelectronic devices multi-functional integration

大凉山地区不同马铃薯品种产量和营养品质的综合评价

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中国蔬菜 2024年第6期 89-100页

作者：汤云川张庆沛冯焱淳俊王暄陈汉樊红柱袁星李倩杨洪邓海艳陈涛成都市农林科学院四川成都611130 南京农业大学植物保护学院农作物生物灾害综合治理教育部重点实验室江苏南京210095 四川省农业科学院农业资源与环境研究所四川成都610066 喜德县袁野农业开发有限公司四川凉山616750

为筛选出适宜四川大凉山地区种植的马铃薯品种,对14个马铃薯品种的12个产量与营养品质指标进行测定,并结合主成分分析、隶属函数法、系统聚类分析对马铃薯产量和品质表现进行综合评价。结果表明,单株结薯数、单薯鲜质量、单株块茎鲜质... 详细信息

为筛选出适宜四川大凉山地区种植的马铃薯品种,对14个马铃薯品种的12个产量与营养品质指标进行测定,并结合主成分分析、隶属函数法、系统聚类分析对马铃薯产量和品质表现进行综合评价。结果表明,单株结薯数、单薯鲜质量、单株块茎鲜质量、单产、还原糖含量的变异系数均超过30%;单株块茎鲜质量与单薯鲜质量、单产和蛋白质含量呈极显著正相关,干物质含量与淀粉含量、蛋白质含量呈极显著正相关,单薯鲜质量与VC含量、锌含量呈显著负相关,蛋白质含量与钾含量呈极显著负相关;主成分分析结果表明,12个指标可用4个主成分来表示,方差累积贡献率达到86.040%。进一步采用隶属函数法和系统聚类分析将14个品种分为3类,筛选出6个综合表现较优的品种,分别为川凉薯10号、青薯9号、川芋50、川凉芋13、云薯108、川芋22号。

关键词：大凉山地区马铃薯主成分分析隶属函数法聚类分析

维普期刊数据库博看期刊

自动化顶空平衡-气相色谱法测定京杭运河中溶解甲烷

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中国环境科学 2024年第3期44卷 1507-1514页

作者：温军臧昆鹏潘凤梅申小龙魏康轩兰文港胡智伟陈啸鸣陈炳江李珊鲁嫣冉陈丽涵郭朋方双喜林溢陈圆圆刘硕徐宏辉浙江工业大学环境学院浙江杭州310014 浙江工业大学浙江碳中和创新研究院浙江杭州310014 浙江省气象科学研究所浙江杭州310008

将顶空平衡法和气相色谱仪相结合,通过自主设计和优化测试实现了技术升级,建立了可自动化进样并同步测定水中溶解CH_(4)和CO_(2)浓度的新型气相色谱系统及方法.结果表明,本系统线性范围宽且运行稳定,自动化程度更高,运行成本更低.该系统... 详细信息

将顶空平衡法和气相色谱仪相结合,通过自主设计和优化测试实现了技术升级,建立了可自动化进样并同步测定水中溶解CH_(4)和CO_(2)浓度的新型气相色谱系统及方法.结果表明,本系统线性范围宽且运行稳定,自动化程度更高,运行成本更低.该系统对CH_(4)的测定精密度优于0.16%,准确度优于0.02%,满足水中溶解CH_(4)浓度监测需求.基于本方法,于2022年8月对京杭大运河杭州段水体中溶解CH_(4)开展了试观测研究.结果显示:夏季京杭大运河杭州段水体中溶解CH_(4)浓度平均值为(642.4±423.3)nmol/L,饱和度平均值为(22310±14701)%,水-气界面CH_(4)扩散通量平均值为(548.57±603.70)μmol/(m^(2)·d),是大气CH_(4)的净源.根据该河段的面积,可估算观测期内CH_(4)的日均排放量约为1710mol,相当于大约38.31m^(3)天然气或约82.94kg碳.

关键词：顶空平衡气相色谱京杭大运河甲烷通量

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孟州市白墙水库鸟类资源调查及多样性分析

环境生态学 2024年第6期6卷 66-72页

作者：张春旺王天平冯千凤张红嫄王颖胡建业邓大军洪军焦作市自然保护区和野生动植物保护中心河南焦作454000 河南城建学院生命科学与工程学院河南平顶山467036 河南省野生动物保护中心河南郑州450000

鸟类生态位宽广,对生态环境因子变化敏感,是检测环境质量的生物指示物种。为了解孟州市白墙水库鸟类的物种组成与多样性,更好地保护生态环境,在2021年5月—2022年3月(周期Ⅰ)和2022年6月—2023年3月(周期Ⅱ)2年间采用样线法和定点观察... 详细信息

鸟类生态位宽广,对生态环境因子变化敏感,是检测环境质量的生物指示物种。为了解孟州市白墙水库鸟类的物种组成与多样性,更好地保护生态环境,在2021年5月—2022年3月(周期Ⅰ)和2022年6月—2023年3月(周期Ⅱ)2年间采用样线法和定点观察相结合的方式对孟州市白墙水库进行鸟类物种调查,并运用R软件iNEXT程序包对不同周期、不同月份以及繁殖期和越冬期鸟类进行多样性分析。本研究共观测到鸟类4 947只,隶属于17目38科102种。其中国家Ⅰ级、Ⅱ级重点保护野生动物分别为1种和15种;IUCN红色名录濒危等级包括近危(NT)2种和易危(VU)4种;优势种为普通鸬鹚(Phalacrocorax carbo)、骨顶鸡(Fulica atra)、苍鹭(Ardea cinerea)和崖沙燕(Riparia riparia)。多样性及均匀度结果分析表明周期Ⅱ鸟类多样性及均匀度比周期Ⅰ高,各月份中2022年8月鸟类多样性和均匀度指数最高,越冬期鸟类多样性比繁殖期高。该研究结果对孟州市白墙水库的生态环境保护和鸟类保护具有重要参考价值。

关键词：孟州市白墙水库湿地鸟类资源 α多样性均匀度分析

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黄河流域焦作段越冬水鸟调查及多样性研究

河南城建学院学报 2024年第2期33卷 109-115页

作者：张春旺王天平冯千凤张红嫄王颖胡建业邓大军洪军焦作市自然保护区和野生动植物保护中心河南焦作454000 河南城建学院生命科学与工程学院河南平顶山476036 河南省野生动物保护中心河南郑州450000

为了掌握黄河流域焦作段越冬水鸟的物种组成与多样性状况,更好地保护鸟类多样性,采用样线法和样点法在两个越冬季对黄河流域焦作段湿地的四个区域(孟州市、武陟县、温县、白墙水库)进行冬季水鸟调查。共记录水鸟8目12科50种18445只,其... 详细信息

为了掌握黄河流域焦作段越冬水鸟的物种组成与多样性状况,更好地保护鸟类多样性,采用样线法和样点法在两个越冬季对黄河流域焦作段湿地的四个区域(孟州市、武陟县、温县、白墙水库)进行冬季水鸟调查。共记录水鸟8目12科50种18445只,其中雁形目1科29种、鸊鷉目1科2种、鸨形目1科1种、鹤形目2科2种、鸻形目3科8种、鹳形目1科1种、鲣鸟目1科1种和鹈形目2科6种。国家Ⅰ级、Ⅱ级重点保护野生动物分别为3种和9种。黄河流域焦作段越冬水鸟Simpson多样性指数为0.871,Shannon-Wiener指数为2.378,Pielou均匀度指数为0.608,Margalef指数为4.989。不同区域水鸟物种多样性指数排序为温县湿地>孟州市湿地>武陟县湿地>白墙水库湿地,Pielou均匀度指数排序为温县湿地>武陟县湿地>白墙水库湿地>孟州市湿地。四个区域的越冬水鸟物种多样性和均匀度指数2022年数据均略高于2021年数据。不同区域越冬水鸟区系分布与居留类型也有一定的差别。

关键词：越冬水鸟多样性生境黄河流域焦作段湿地

High Selective Hydrogenation of Acetophenone Catalyzed by Alumina Supported Platinum Nanoclusters

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Chinese Chemical Letters 2003年第5期14卷 533-534页

作者： Qin zhang hong Xia MA Hua chen Jia yuan HU Xian jun LI Department of Chemistry Sichuan UniversityChengdu 610064

A new preparation and reduction method of ?Al2O3 supported and PVP stabilized platinum nanoclusters was studied. The catalyst exhibited very high activity and selectivity for acetophenone hydrogenation in isopropanol... 详细信息

关键词： Platinum nanoclusters acetophenone hydrogenation.