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All boron-based 2D material as anode material in Li-ion batteries

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Journal of Energy Chemistry 2018年第6期27卷 1651-1654页

作者： ning jiang Biao Li Fanghua ning Dingguo Xia Beijing Key Lab of Theory and Technology for Advanced Batteries Materials College of Engineering Peking University Beijing 100874China

To design the high-energy-density Li-ion batteries, the anode materials with high specific capacity haveattracted much attention. In this work, we adopt the first principles calculations to investigate the pos-sibility of a new two dimensional boron material, named Be, as anode material for Li-ion batteries. Thecalculated results show that the maximum theoretical specific capacity of Bc is 1653mAh g-1 （LiBl.s）.Additionally, the energy barriers of Li ion and Li vacancy diffusion are 330 meV and 110 meV, respec-tively, which imply fast charge and discharge ability for B6 as an anode material. The theoretical findingsreported in this work suggest that BG is a potential candidate as anode material of high-energy-density Li-ion batteries.

关键词： Ali boron-based 2D material Anode materials Li-ion batteries First principles calculations

基于食品冻结曲线的小龙虾液氮速冻装备设计与试验

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包装与食品机械 2024年第1期42卷 77-82页

作者：王林安文轩江宁袁潮高瑞昌江苏大学食品与生物工程学院江苏镇江212013 江苏省农业科学院农产品加工研究所南京210014 宿迁楠景水产食品有限公司江苏宿迁223900

针对液氮速冻产品冻裂率高、液氮损耗量大的问题,基于食品冻结曲线,设计三腔体液氮速冻设备,包括预冷腔(4.2 m,-70℃)、结晶腔(5.8 m,-100℃)和深冷腔(5.0 m,-120℃)。相较于单腔体液氮速冻设备(15.0 m,-100℃),三腔体液氮速冻设备使预... 详细信息

针对液氮速冻产品冻裂率高、液氮损耗量大的问题,基于食品冻结曲线,设计三腔体液氮速冻设备,包括预冷腔(4.2 m,-70℃)、结晶腔(5.8 m,-100℃)和深冷腔(5.0 m,-120℃)。相较于单腔体液氮速冻设备(15.0 m,-100℃),三腔体液氮速冻设备使预包装调理小龙虾的冻结时间缩短10.0%,冻裂率降低40.4%,液氮节约15.0%;质构(硬性、弹性、内聚性、回复性、咀嚼性)和色泽(L*,b*)显著改善,挥发性盐基氮显著降低,水分、盐溶性蛋白和感官(色泽和质地)品质显著提高。研究为液氮速冻技术和装备的改进提供参考和借鉴。

关键词：液氮速冻装备设计小龙虾食品冻结曲线

Analytical solution for the time-fractional heat conduction equation in spherical coordinate system by the method of variable separation

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Acta Mechanica Sinica 2011年第6期27卷 994-1000页

作者： Ting-Hui ning Xiao-Yun jiang School of Mathematics Shandong University 250100 Jinan China

In this paper,using the fractional Fourier law,we obtain the fractional heat conduction equation with a time-fractional derivative in the spherical coordinate *** method of variable separation is used to solve the timefractional heat conduction *** Caputo fractional derivative of the order 0 〈 α≤ 1 is *** solution is presented in terms of the Mittag-Leffler *** results are illustrated graphically for various values of fractional derivative.

关键词： Fractional Fourier law Fractional heat conduction equation - Spherical coordinate system - The separation of variables Mittag-Leffler function

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电力碳排放计量技术现状及展望

今日自动化 2024年第6期 151-152,155页

作者：徐文彪蒋宁国网浙江省电力有限公司杭州市余杭区供电公司浙江杭州311100

电力碳排放计量技术对于实现“双碳”目标至关重要。该技术有助于评估不同地区和行业的碳排放量,并为制订减排策略提供重要依据。文章分析了我国电力碳排放计量技术的发展现状,探讨了其未来发展方向,以期为我国电力行业的环保与可持续... 详细信息

电力碳排放计量技术对于实现“双碳”目标至关重要。该技术有助于评估不同地区和行业的碳排放量,并为制订减排策略提供重要依据。文章分析了我国电力碳排放计量技术的发展现状,探讨了其未来发展方向,以期为我国电力行业的环保与可持续发展提供借鉴。

关键词：电力碳排放计量技术碳交易低碳调度

Synthesis and Structural Characterization of a New Hydrogen-bonded Polyrotaxane of [Co(H_2O)_6]_(2+) with 1,1′-(Propane-1,3-diyl)dipyridinium-4-carboxylate

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Chinese Journal of Structural Chemistry 2006年第8期25卷 957-964页

作者： jiang ning-Yi LI Song-Lin Department of Chemistry College of Science Tianjin University Tianjin 300072 China

A new double betaine 1,1′-（propane-1,3-diyl）dipyridinium-4-carboxylate L has been synthesized. Reaction of 1, 1′-（propane-1,3-diyl）dipyridinium-4-carboxylate tetrahydrate 1 with Co（ClO4）2-6H2O leads to the formation of a new Co（Ⅱ） coordination compound, namely [Co（H2O）6]-2H2O-2L-2ClO4 2. The crystal structures of 1 and 2 have been determined by single-crystal X-ray diffraction method. Crystal data for 1. monoclinic, space group C2/c, a = 18.945（4）, b = 7.700（2）, c = l 1.888（2）A,β = 101.67（3）°, V = 1698.3（6） A^3, Z = 4, F（000） = 760.0, Dc = 1.402 g/cm^3, the final R = 0.0607 and wR = 0.1607 for 950 observed reflections （1 〉 2σ（I））; and those for 2： monoclinic, space group P21/c, a = 17.982（1）, b = 15.879 （1）, c = 7.0716（5）/A,β= 100.675（1）°, V= 1984.3（3） ,A^3 Z= 4, F（000） = 1010.0, Dc = 1.631 g/cm^3, the final R = 0.0316 and wR = 0.0896 for 3784 observed reflections （1 〉20（I））. Crystal structure analysis indicates that in 1, molecules of L in a ＂V-shaped＂ conformation are linked to chains sustained by O-H…O hydrogen bonds between carboxylate groups and solvent water molecules. The chains are joined by O-H…O and C-H…O hydrogen bonds to further expand into a three-dimensional structure. For 2, molecules of L in a ＂Z-shaped＂ conformation are linked by hydrogen bonds between carboxylate groups and aqua ligands to form a chain of loops running down the b axis. The （2D→2D） polythreading in compound 2 represents the mode of parallel interpenetration of 2D sheets, having polyrotaxane character.

关键词： 1,1′-(propane-1,3-diyl)dipyridinium-4-carboxylate polyrotaxane hydrogen bonding betaine derivative

Characterization and Crystal Structures of Two Copper(Ⅱ) Complexes Constructed by a Flexible Double Betaine Ligand

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Chinese Journal of Structural Chemistry 2007年第2期26卷 199-205页

作者： jiang ning-Yi LI Song-Lin Department of Chemistry College of Science Tianjin University Tianjin 300072 China

A flexible double betaine 1,4-bis（pyridinil-4-carboxylato）-1,4-dimethylbenzene L has been used to generate two Cu（Ⅱ）-containing metal complexes that exhibit different polymeric structures： [Cu（H2O）2 L].2NO3 1 and [Cu（H2O）3 L].2Cl.H2O 2. The crystal structures of 1 and 2 have been determined by single-crystal X-ray diffraction method. Crystal data for 1： triclinic, space group PT, a = 5.253（2）, b = 7.406（3）, c = 14.792（5） A, α = 84.195（5）, β = 80.014（5）, γ = 78.053（5）°, V= 553.2（3）A^3, Z = 1, F（000） = 293, Dc = 1.717 g/cm^3, the final R = 0.0385 and wR = 0.1079 for 1883 observed reflections （I 〉 2σ（I））; and those for 2： monoclinic, space group P21/c, a = 10.222（3）, b = 25.287（7）, c = 9.277（3）A, β = 93.572（5）°, V = 2393.2（12）A^3, Z = 4, F（000） = 1140, Dc = 1.540 g/cm^3, the final R = 0.0472 and wR = 0.0956 for 3204 observed reflections （I 〉2o（/））.

关键词： 1,4-bis(pyridinio-4-earboxylato)-l,4-dimethylbenzene copper(Ⅱ) complex double betaine

CuMn_(2)O_(4)催化剂臭氧催化甲苯:反应条件和机理分析

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高校化学工程学报 2024年第3期38卷 500-511页

作者：叶志平王朝晖刘明浩赵博王冠杰姜宁黄燕浙江工业大学环境学院浙江杭州310014 国家环境保护大气复合污染来源与控制重点实验室北京100084 浙江卓锦环保科技股份有限公司浙江杭州310064 浙江德创环境科技有限公司浙江绍兴312000 浙江大学台州研究院浙江台州318000 德清县生态环境监测站浙江湖州313299

为减少目前工业生产排放大量的挥发性有机污染物(VOCs)对环境的影响,采用共沉淀法制备CuMn_(2)O_(4)尖晶石催化剂,将CuMn_(2)O_(4)催化剂结合臭氧(O_(3))催化氧化VOCs具有良好的效果,考察了反应条件对甲苯处理效果的影响,分析CuMn_(2)O_... 详细信息

为减少目前工业生产排放大量的挥发性有机污染物(VOCs)对环境的影响,采用共沉淀法制备CuMn_(2)O_(4)尖晶石催化剂,将CuMn_(2)O_(4)催化剂结合臭氧(O_(3))催化氧化VOCs具有良好的效果,考察了反应条件对甲苯处理效果的影响,分析CuMn_(2)O_(4)臭氧催化氧化甲苯的反应机理。结果表明,CuMn_(2)O_(4)在臭氧的体积分数为2.1×10^(-3)、反应温度为100℃以及干空气条件下对甲苯的去除率达73%。通过催化表征和原位反应过程分析,证实适当温度和高体积分数的O_(3)可促进活性氧物种(ROS)产生,O_(3)在Mn-O或Cu-O_(v)-Mn分解并生成ROS,而Cu_(0)与Cu^(+)质量分数比w(Cu~0)/w(Cu^(+))可作为甲苯吸附锚点,在反应初期吸附甲苯并促使甲苯在活性位点(Cu-O_(v)-Mn)氧化成苯甲酸,甚至CO_(2)、H_(2)O等小分子物质。

关键词： CuMn_(2)O_(4) 臭氧催化氧化影响因素反应机理

MiRNA-122在运动改善非酒精性脂肪肝中的作用

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中国组织工程研究 2024年第2期28卷 272-279页

作者：郭项英彭子富何亦敏房洪波姜宁天津体育学院天津市运动生理与运动医学重点实验室天津市301617

背景:近年来,随着人们生活水平的提高,非酒精性脂肪肝有逐渐增多的趋势。miRNA-122是肝脏中最丰富的miRNA之一,在维持肝脏内环境稳定和分化中起重要作用。运动训练是非酒精性脂肪肝的非药物治疗手段,运动可能通过调节肝脏miRNA-122的表... 详细信息

背景:近年来,随着人们生活水平的提高,非酒精性脂肪肝有逐渐增多的趋势。miRNA-122是肝脏中最丰富的miRNA之一,在维持肝脏内环境稳定和分化中起重要作用。运动训练是非酒精性脂肪肝的非药物治疗手段,运动可能通过调节肝脏miRNA-122的表达改善肝脏脂代谢等过程。目的:综述miRNA-122对非酒精性脂肪肝相关病理因素的影响,以及运动对miRNA-122表达和非酒精性脂肪肝发生发展的影响。方法:第一作者检索中国知网、万方数据库和维普数据库、PubMed、Geenmedical、EBSCO、Medline、Web of Science和Elsevier数据库,以“non-alcoholic fatty liver disease,microRNA,microRNA-122,lipid metabolism,inflammatory response,insulin resistance,exercise,physical exercise,exercise training”为英文检索词,以“非酒精性脂肪肝,microRNA,microRNA-122,脂代谢,炎症反应,胰岛素抵抗,运动,体育活动”为中文检索词,检索2022-06-05前发表的所有相关文献,并对其进行了筛选、归纳、分析、总结,最后纳入68篇文献进行综述。结果与结论:①与健康对照组相比,非酒精性脂肪肝患者循环miRNA-122表达升高,miRNA-122在非酒精性脂肪肝的不同阶段表现出不同的表达情况。②miRNA-122可通过靶向mRNA上的碱基互补配对位点或直接作为某些RNA受体的生理配体调控下游相关蛋白的表达,影响非酒精性脂肪肝脂代谢、炎症反应和胰岛素抵抗等致病因素。③不同的运动方式对非酒精性脂肪肝均有改善作用,对于非酒精性脂肪肝患者,每周需要完成至少120 min的中等强度运动才可产生积极作用;对于能够耐受各种运动的非酒精性脂肪肝患者,应优先考虑每周进行四五次有氧和抗阻运动结合的训练。运动强度应为最大心率的50%-70%,并持续>3个月;而对于耐受力较差的非酒精性脂肪肝患者,抗阻运动可能比有氧运动更可行;此外,非酒精性脂肪肝患者还可根据自身的疾病情况(如肝酶、脂质水平)选择运动方式。④运动可作为防治非酒精性脂肪肝、减轻肝脂肪变性、降低肝脏炎症反应和胰岛素抵抗的可行策略。⑤运动训练可调控机体miRNA-122的表达,但在非酒精性脂肪肝患者中,运动对miRNA-122及其相关信号通路的影响还有待研究。

关键词：非酒精性脂肪肝运动 miRNA-122 脂代谢炎症反应胰岛素抵抗 microRNA

Seasonal Forecast of South China Sea Summer Monsoon Onset Disturbed by Cold Tongue La Niña in the Past Decade

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Advances in Atmospheric Sciences 2021年第1期38卷 147-155页

作者： ning jiang Congwen ZHU State Key Laboratory of Severe Weather and Institute of Climate System Chinese Academy of Meteorological SciencesBeijing 100081China

It has been suggested that a warm(cold)ENSO event in winter is mostly followed by a late(early)onset of the South China Sea(SCS)summer monsoon(SCSSM)in *** results show this positive relationship,which is mainly determined by their phase correlation,has been broken under recent rapid global warming since 2011,due to the disturbance of cold tongue(CT)La Niña *** from its canonical counterpart,a CT La Niña event is characterized by surface meridional wind divergences in the central-eastern equatorial Pacific,which can delay the SCSSM onset by enhanced convections in the warming Indian Ocean and the western subtropical *** to the increased Indian−western Pacific warming and the prevalent CT La Niña events,empirical seasonal forecasting of SCSSM onset based on ENSO may be challenged in the future.

关键词： monsoon onset SCSSM ENSO cold tongue La Niña seasonal forecast