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Construction of ternary Sn/SnO_(2)/nitrogen-doped carbon superstructures as anodes for advanced lithium-ion batteries

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Nano Research 2024年第11期17卷 9721-9727页

作者： Zizhou Shen Xiaotian Guo hongye ding Dianheng Yu Yihao Chen Nana Li Huijie Zhou Songtao Zhang Jun Wu Huan Pang School of Chemistry and Chemical Engineering Yangzhou University Yangzhou 225009 China Interdisciplinary Materials Research Center Institute for Advanced Study Chengdu University Chengdu 610106 China

Pristine tin (Sn) and tin dioxide (SnO_(2)) have sparked wide interest owing to their abundant resources and superior theoretical capacity. Nevertheless, the obvious volume expansion effect upon cycling and undesirable conductivity of Sn-based materials lead to undesirable specific capacity. In this work, a nanostructured Sn/SnO_(2)/nitrogen-doped carbon (NC) superstructure was prepared through a facile electrospray-carbonization strategy. The Sn/SnO_(2) nanoparticles (NPs) were uniformly dispersed in a spherical NC matrix, which prevented the volume expansion and aggregation of NPs and facilitated the ion diffusion and charge transfer kinetics. When the optimized Sn/SnO_(2)/NC superstructures were employed as lithium-ion battery anodes, a remarkable specific capacity of 747.9 mAh·g^(−1) over 200 cycles at 0.5 A·g^(−1) and a superior cyclability of 644.1 mAh·g^(−1) over 1000 cycles at 2 A·g^(−1) were obtained. This effective synthetic strategy for synthesizing superstructures provides valuable insights for the advancement of lithium-ion batteries.

关键词： tin/tin dioxide nitrogen-doped carbon electrospray lithium-ion batteries

Chronological and geochemical studies of granite and enclave in Baimashan pluton, Hunan, South China

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Science China Earth Sciences 2007年第11期50卷 1606-1627页

作者： CHEN WeiFeng1, CHEN PeiRong1, HUANG hongye2, ding Xing1,3 & SUN Tao1 1 State Key Laboratory of Mineral Deposit Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China 2 Research Institute No.230, CNNC, Changsha 410011, China 3 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China State Key Laboratory of Mineral Deposit Research Department of Earth Sciences Nanjing University Nanjing China Research Institute No.230 CNNC Changsha China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China

Zircon LA-ICP-MS U-Pb dating reveals that the Baimashan Pluton is composed mainly of late Indosinian (204.5±2.8 Ma-209.2±3.8 Ma) biotite granodiorites/monzonitic granites (LIGs) and early Yanshanian (176.7±1.7 Ma) two-micas monzonitic granites (EYGs), and the coeval (203.2±4.5 Ma-205.1±3.9 Ma) mafic microgranular enclaves (MMEs) are generally found in the former. In addition, the ages of cores within zircons from LIGs and MMEs ranging from 221.4±4.0 Ma to 226.5±4.1Ma provide evidence of multistage magma intrusion during Indosinian in the study area. Measured 3010±20.6 Ma of inherited zircon age suggests that there may be recycling Archaean curstal material in existence in this area. LIGs and EYGs share some similar geochemical features: subalkaline and peraluminous granites, enrichment of Th, U, K, Ta, Zr, Hf and LREE but depletion of Ba, Nb, P, Ti and Eu, low εNd(t) values but high (87Sr/86Sr)i ratios, and old T2DM (ca. 1.9-2.0 Ga). The behaviors of incompatible elements and REE are mainly dominated by fractional crystallization of plagioclase, K-feldspar, ilmenite and apatite, but that of Sr isotope mainly controlled by EC-AFC. They are crust-sourced and derived from partial melting of paleo-Proterozoic metagreywackes and related to biotite dehydration melting. LIGs are formed in post-collisional tectonic setting as crustal local extension and thinning during late Indosinian. But EYGs may be evolved products of congeneric granitic magma with LIGs formed in late Indoinian, which were emplaced again when crust underwent extensive thinning and extension in post-orogenic tectonic setting during Yanshanian in SC after undergoing EC-AFC. MMEs should be cognate enclaves and derived from liquid immiscibility of host magma.

关键词： granite,mafic microgranular enclave,zircon LA-ICP-MS dating,lithogenesis,EC-AFC

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链状亚历山大藻生长衰亡相关基因的筛选

生态学报 2012年第2期32卷 431-437页

作者：仲洁隋正红王春燕丁弘叶周伟张杨中国海洋大学海洋生物遗传育种教育部重点实验室青岛266003 山东嫁禾生化(沂南)有限公司沂南276300 青岛海底世界青岛266003

采用抑制性消减杂交(Suppression subtractive hybridization,SSH)技术构建了衰亡期的链状亚历山大藻(Alexandriumcatenella)特异表达的cDNA文库。共获得800个克隆,利用巢式引物进行PCR筛选,最终确定阳性克隆556个。利用斑点杂交技术对... 详细信息

采用抑制性消减杂交(Suppression subtractive hybridization,SSH)技术构建了衰亡期的链状亚历山大藻(Alexandriumcatenella)特异表达的cDNA文库。共获得800个克隆,利用巢式引物进行PCR筛选,最终确定阳性克隆556个。利用斑点杂交技术对这些阳性克隆进行差异筛选,获得差异表达克隆160个。测序后得到片段125个,经过归类,获得21种序列,其中6种在NCBI中经Blast,获得功能基因与其匹配,这些功能基因分别是CHK1类似检测点蛋白(checkpoint-like protein)、核酸外切酶复合体、谷氧还蛋白、Na+/K+ATPase、叶绿体中的一个开放阅读框和pG1蛋白,其他blast无同源序列,可能为新基因。推测链状亚历山大藻的衰亡过程可能涉及到DNA损伤、mRNA降解过程、氧化还原状态的变化、离子动态平衡的变化以及叶绿体一些生理状况的变化等过程。

关键词：链状亚历山大藻衰亡抑制性消减杂交

卡托普利与洛沙坦对肾性高血压大鼠血压的影响

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天津医药 2006年第4期34卷 259-261页

作者：郑宏刚丁红叶孙保存赵秀兰杨玉清天津医科大学肿瘤医院山西省人民医院

目的:探讨卡托普利与洛沙坦治疗肾性高血压大鼠的药效和作用特点。方法:(1)离体血管环微量生物反应测定法检测血管紧张素Ⅱ(AⅡ)引起的血管收缩反应。(2)建立两肾一夹型肾性高血压大鼠模型,利用颈动脉插管法和鼠尾测压计检测血压,观测... 详细信息

目的:探讨卡托普利与洛沙坦治疗肾性高血压大鼠的药效和作用特点。方法:(1)离体血管环微量生物反应测定法检测血管紧张素Ⅱ(AⅡ)引起的血管收缩反应。(2)建立两肾一夹型肾性高血压大鼠模型,利用颈动脉插管法和鼠尾测压计检测血压,观测急性血压的变化。结果:(1)离体血管环实验:AⅡ能引起剂量依赖性的血管收缩反应,最大有效剂量的卡托普利(0.1mg/kg)对低剂量AⅡ收缩反应有轻度抑制效应;随着外源性AⅡ量增多,其抑血管收缩作用明显减弱。同样条件下洛沙坦却能完全抑制AⅡ所引起的血管收缩反应。(2)在体急性降压实验:最大有效剂量的卡托普利使模型鼠的平均动脉压由(18.37±3.93)kPa降为(8.70±1.23)kPa,给洛沙坦最大降压有效剂量(2mg/kg),血压未再下降;而另一组先给洛沙坦,平均动脉压由(16.75±1.14)kPa降为(11.45±2.45)kPa,然后给最大有效降压剂量的卡托普利,血压持续降为(9.33±1.77)kPa,与给洛沙坦后血压相比具有统计学意义(P<0.05)。结论:(1)洛沙坦通过阻断AⅡ受体直接发挥作用,而离体状态下卡托普利只能通过减少内源性AⅡ的生成间接起效,药效弱于洛沙坦。(2)急性在体实验中卡托普利的最大降压效应强于洛沙坦。

关键词：高血压血管紧张素Ⅱ 卡托普利洛沙坦大鼠 Wistar 模型动物

18650钢壳电池表面涂油设备的设计与研究

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自动化应用 2024年第11期65卷 193-195页

作者：谢权元胡正西彭斌唐柳黄永强丁红业贺州学院人工智能学院广西贺州542899

18650钢壳电池表面涂油设备是根据18650钢壳电池的基本外形尺寸,采用非标设计理念设计的,该设备由上料机构、涂油机构、下料机构3个部分构成。非标件通过SolidWorks软件建模完成,标准件通过计算选型。通过SolidWorks软件将非标件与标准... 详细信息

18650钢壳电池表面涂油设备是根据18650钢壳电池的基本外形尺寸,采用非标设计理念设计的,该设备由上料机构、涂油机构、下料机构3个部分构成。非标件通过SolidWorks软件建模完成,标准件通过计算选型。通过SolidWorks软件将非标件与标准件装配成完整的设备,并设计了能实现18650钢壳电池表面涂油的气动系统,最后通过三菱PLC控制整台设备的运行,为18650电池提供了一种高效的涂油解决方案。

关键词： 18650钢壳电池涂油设备三菱PLC

Single Zircon LA-ICP-MS U-Pb Dating of the Guandimiao and Wawutang Granitic Plutons in Hunan,South China and Its Petrogenetic Significance

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Acta Geologica Sinica(English Edition) 2007年第1期81卷 81-89页

作者： CHEN Weifeng CHEN Peirong ZHOU Xinmin HUANG hongye ding Xing SUN Tao The Key Laboratory for Mineral Deposits Research Department of Earth Sciences Nanjing University Nanjing Jiangsu 210093 No. 230 Research Institute CNNC Changsha Hunan 410011

The Guandimao and Wawutang plutons are located at the center of Hunan, South China. The former is mainly composed of biotite monzonitic granites/granodiorites and two-mica monzonltic granites, but the latter only consists of biotite monzonitic granites. The zircon ages of 203.0±1.6 Ma （biotite monzonitic granites） and 208.0-23.2 Ma （two-mica monzonltic granites） for the Guandimao pluton and 204±3 Ma for the Wawutang pluton obtained with the LA-ICP-MS U-Pb dating indicate that they were formed during the late Indosinian. In consideration of other geochronological data from Indosinian rocks of South China and adjacent regions, it is inferred that the two plutons were derived from crustal materials by decompressional melting in a post-collisional tectonic setting during spontaneous thinning of the thickened curst. Moreover, the inherited zircon age of 1273±57 Ma from the Wawutang pluton indicates that the source of the two plutons is related to the early Proterozoic crustal basement.

关键词： zircon LA-ICP-MS U-Pb dating granite Indosinian movement CL images

Single zircon LA-ICPMS U-Pb dating of Weishan granite (Hunan, South China) and its petrogenetic significance

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Science China Earth Sciences 2006年第8期49卷 816-827页

作者： ding Xing1, CHEN Peirong1, CHEN Weifeng1, HUANG hongye2 & ZHOU Xinmin1 1. Department of Earth Science, Nanjing University, Nanjing 210093, China 2. Research Institute No.230, CNNC, Changsha 410011, China Department of Earth Science Nanjing University Nanjing China Research Institute No.230 CNNC Changsha China

A detailed microstructure analysis and LA-ICPMS U-Pb dating have been done for zir- cons of Weishan granite from Hunan Province, South China. The results indicate that the Weishan granite is a multistage batholith formed during the late Indosinian-early Yanshanian time. The intruded time of the late Indosinian granite is 211.0±1.6Ma and 215.7±1.9Ma (two samples), whereas that of the early Yanshanian granite is 187.4±3.5Ma and 184.5±5.1Ma (two samples). In combination with other geochronological data for Indosinian rocks of South China and the adjacent region, it is inferred that the late Indosinian granites of South China (especially Hunan Province) are probably formed under extension regime as a consequence of post-collision stress relaxation, which is a spontaneous response to intracontinental thickening attributed to the collision and extrusion of two Indosinian seams, namely Qinling-Dabie and Song Ma. Moreover, it is also deduced that the early Yanshanian granites of Hunan Province could not be directly related with the subduction of Paleo-Pacific plate towards Eurasian continent, and they are most likely derivation of the mid- or lower-crustal materials because of decompressional melting under the continuous extension setting.

关键词： CL images, LA-ICPMS U-Pb dating, granite, Weishan, Hunan.

Al-6.3CuAC-GTAW电弧增材成形的气孔控制

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稀有金属材料与工程 2017年第5期46卷 1359-1364页

作者：从保强孙红叶彭鹏齐铂金赵罡丁佳洛北京航空航天大学北京100191 航空高端装备智能制造工信部重点实验室北京100191 Cranfield University UK MK43 0AL

采用AC-GTAW工艺进行Al-6.3Cu铝合金电弧填丝单道多层成形试验,针对不同热输入、空气和氩气两种环境及不同送丝速度条件,研究过程参数及环境气氛对成形件内部气孔的影响。结果表明,热输入对气孔的影响最大,控制热输入能减少试件中气孔... 详细信息

采用AC-GTAW工艺进行Al-6.3Cu铝合金电弧填丝单道多层成形试验,针对不同热输入、空气和氩气两种环境及不同送丝速度条件,研究过程参数及环境气氛对成形件内部气孔的影响。结果表明,热输入对气孔的影响最大,控制热输入能减少试件中气孔数量和大小;在适当控制热输入条件下,采用氩气环境和低送丝速度可显著减少内部气孔缺陷。试验发现,I=125 A,vTS=0.30 m/min,氩气环境下,vWFS=2.0 m/min时,气孔数量最少,尺寸最小。

关键词：铝合金 AC-GTAW 增材制造气孔

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跨模态语义对齐和信息细化的多模态情感分析

计算机工程与应用 2024年第22期60卷 114-125页

作者：丁美荣陈鸿业曾碧卿华南师范大学软件学院广东佛山528225

为了解决多模态情感分析中存在异构鸿沟和语义鸿沟,以及模态无法有效融合等问题,提出了一个新的框架,基于跨模态Transformer的语义对齐和信息细化的多模态情感分析模型CM-SAIR(cross-modal semantic alignment and information refineme... 详细信息

为了解决多模态情感分析中存在异构鸿沟和语义鸿沟,以及模态无法有效融合等问题,提出了一个新的框架,基于跨模态Transformer的语义对齐和信息细化的多模态情感分析模型CM-SAIR(cross-modal semantic alignment and information refinement for multi-modal sentiment analysis),可以有效地解决多模态语义不对齐、语义噪声等问题,实现多模态数据更好地交互融合。使用多模态特征嵌入模块(multi-modal feature embedding,MFE)增强视觉和听觉模态的情感信息。通过一个定义良好的模态间语义对齐模块(inter-modal semantic alignment,ISA)进行双模态时间维度的对齐。通过一个模态内的信息细化模块(intra-modal information refinement,IIR)进行情感解析和情感细化。通过多模态门控融合模块(multi-modal gated fusion,MGF)实现模态的有效融合。在流行的多模态情感分析数据集上进行实验,证明了CM-SAIR框架与最先进的基线相比的优势。

关键词：多模态特征嵌入语义对齐信息细化多模态门控融合多模态情感分析