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基于絮凝沉砂的立式砂仓面积最佳计算模式

东北大学学报（自然科学版） 2016年第10期37卷 1501-1506页

作者：王石张钦礼王新民李帅中南大学资源与安全工程学院湖南长沙410083

为探究全尾砂絮凝沉降条件下立式砂仓面积最佳计算模式,根据最理想沉砂条件和不同沉砂特点,从3种计算模式中确定出结果误差最小者.以某铅锌矿为例,进行细粒级全尾砂絮凝沉降试验,回归分析得到最佳沉砂条件下的沉降曲线,依此从3个角度分... 详细信息

为探究全尾砂絮凝沉降条件下立式砂仓面积最佳计算模式,根据最理想沉砂条件和不同沉砂特点,从3种计算模式中确定出结果误差最小者.以某铅锌矿为例,进行细粒级全尾砂絮凝沉降试验,回归分析得到最佳沉砂条件下的沉降曲线,依此从3个角度分析立式砂仓面积计算模式的可靠度.最佳絮凝条件:相对分子量为8×106的阴离子聚丙烯酰胺(APAM),入料砂浆体积分数为7.80%,对应的絮凝剂单耗为17.66 g·t-1.最佳立式砂仓面积为36.06 m2,托麦吉-菲契图解计算模式所得结果与其贴近度达97.04%.

关键词：全尾砂絮凝沉降立式砂仓面积回归分析计算模式

Effects of glycine on plasma and liver tissue changes of TNF-α,ET-1 and nitric oxide contents in rats with obstructive jaundice

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World Journal of Gastroenterology 2003年第10期9卷 2374-2376页

作者： He-Qing Fang Ying-Bin liu Hai-Jun li Shu-You Peng Yu-lian Wu Bin Xu Jian-Wei wang Jiang-Tao li xin-Bao wang, Department of General Surgery, Second Affiliated Hospital, Medical College of Zhejiang University, Hangzhou 310009, Zhejiang Province, China Department of General Surgery Second Affiliated Hospital Medical College of Zhejiang University Hangzhou 310009 Zhejiang Province China.

AIM: To evaluate the effect of glycine on plasma and liver tissue changes of tumor necrosis factor-α (TNF-α),endothelin-1 (ET-1) and nitric oxide (NO) contents in rats with obstructive ***: Ninety healthy Wistar rats of both sexes weighing 275±25 g were randomly divided into shamoperated, bile duct-ligated, and bile duct-ligated plus glycine-treated groups, the latter was performed with 5 %glycine solution substituting for tap water drunk ad libium for 5 days before and 6 days after operation. Blood and liver tissue were sampled at the time of sacrifice on the 8th day post operation. Plasma total bilirubin, endotoxin, levels,as well as TNF-α, ET-1 and NO contents in liver tissue were ***: Plasma endotoxin and total bilirubin levels were significantly higher in both bile duct-ligated and bile ductligated plus glycine-treated rats than in sham-operated animals (P=0.000613, 0.00921 and 0.00737, 0.00841respectively), whereas they did not display any statistically significant difference between the former groups (P=0.417and 0.374 respectively). likewise, TNF-α, ET-1 and NO contents in both plasma and liver tissue were significantly increased in both bile duct-ligated and bile duct-ligated plus glycine-treated rats compared with sham-operated animals (P=-0.00813, 0.00793, 0.00671, 0.00804, 0.00872, and 0.00947 in plasma and 0.00531, 0.00785, 0.00912, 0.00981and 0.00635 in liver tissue respectively). However, these inflammatory mediators in both plasma and liver tissue were significantly reduced in bile duct-ligated rats fed on 5 %glycine solution compared with that without (P=0.00953,0.00891, 0.0795, 0.00867, 0.0697 and 0.00907 in plasma and liver tissue respectively).CONCLUSION: Reduction of TNF-α, ET-1 and NO contents in plasma and liver tissue of rats fed on glycine may be helpful to alleviate pathological lesions in obstructive jaundice.

关键词：氨基乙酸血浆肝脏组织 TNF-α ET-1 一氧化氮作用机制动物实验阻塞性黄疸

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红外/微波波束合成器近场均匀性分析

北京理工大学学报 2016年第10期36卷 1079-1084页

作者：严辉田义王欣李卓北京理工大学光电学院北京100081

针对矩量法(MoM)计算电大尺寸介质近场分布的低效率,提出使用口径场积分法(AFIM)分析红外/微波波束合成器近场均匀性,对比表明,AFIM相对MoM偏差小于10%,计算时间从数小时缩短至数秒.以电场分布曲线的标准差为均匀性指标,计算表明波束合... 详细信息

针对矩量法(MoM)计算电大尺寸介质近场分布的低效率,提出使用口径场积分法(AFIM)分析红外/微波波束合成器近场均匀性,对比表明,AFIM相对MoM偏差小于10%,计算时间从数小时缩短至数秒.以电场分布曲线的标准差为均匀性指标,计算表明波束合成器近场均匀性关于D^2/λL成负幂函数关系(D为波束合成器口径,L为近场距离,λ为波长).将该负幂函数用于波束合成器外形尺寸优化,优化结果通过MoM进行验证,相对偏差小于10%.

关键词：波束合成器矩量法口径场积分近场计算

阻燃剂／不饱和聚酯／蒙脱土纳米复合材料的性能

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高分子材料科学与工程 2008年第5期24卷 56-59页

作者：李宗剑王立新任丽河北工业大学高分子科学与工程研究所天津300130

采用原位插层复合法,制备了包含十溴二苯醚和蒙脱土的阻燃剂/不饱和聚酯/蒙脱土纳米复合材料。通过XRD、SEM和TEM等手段表征阻燃剂/不饱和聚酯/蒙脱土纳米复合材料的微观结构。通过拉伸、冲击和氧指数实验对阻燃剂/不饱和聚酯/蒙脱土纳... 详细信息

采用原位插层复合法,制备了包含十溴二苯醚和蒙脱土的阻燃剂/不饱和聚酯/蒙脱土纳米复合材料。通过XRD、SEM和TEM等手段表征阻燃剂/不饱和聚酯/蒙脱土纳米复合材料的微观结构。通过拉伸、冲击和氧指数实验对阻燃剂/不饱和聚酯/蒙脱土纳米复合材料的力学性能、阻燃性能进行研究。结果表明,当蒙脱土的含量为0.6%时,阻燃剂/不饱和聚酯/蒙脱土纳米复合材料的氧指数与阻燃剂/不饱和聚酯复合材料相比从24.1上升到25.4,冲击强度和拉伸强度分别提高82.66%和31.05%。燃烧残余物数码照片和扫描电镜照片显示蒙脱土促进了炭层形成。

关键词：阻燃剂不饱和聚酯纳米复合材料有机蒙脱土

A low redox potential and long life organic anode material for sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 557-564页

作者： Zhi li Yang Wei Kang Zhou xin Huang xing Zhou Jie Xu Taoyi Kong Junwei Lucas Bao Xiaoli Dong Yonggang wang Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University Department of Chemistry Boston College School of Materials Science and Engineering Anhui University of Technology

Sodium-ion batteries （SIBs） with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ***,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials（>1 V）.Organic electrodes with low redox potential that can be used as anode are ***,a novel organic anode material （tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na4TDC） has been developed with low redox potential （lic *** three-sodium storage mechanism was demonstrated with various in-situ/ex-situ spectroscopy and theoretical calculations,showing a high capacity of 208 mAh/g and an average decay rate of merely 0.022%per ***,the Na4TDC-hard carbon composite can further acquire improved capacity and cycling stability for 1200 cycles even with a high mass loading of up to 20 mg *** pairing with a thick Na3V2（PO4）3cathode (20.6 mg cm-2),the as-fabricated full cell exhibited high operating voltage （2.8 V）,excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na4TDC anode material for SIBs.

关键词： Organic anode material Low redox potential Composite anode Sodium-ion batteries

Early identification of stroke through deep learning with multi-modal human speech and movement data

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Neural Regeneration Research 2025年第1期20卷 234-241页

作者： Zijun Ou Haitao wang Bin Zhang Haobang liang Bei Hu Longlong Ren Yanjuan liu Yuhu Zhang Chengbo Dai Hejun Wu Weifeng li xin li School of Computer Science and Engineering Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Neurology Guangdong Neuroscience InstituteGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong ProvinceChina Department of Emergency Medicine Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong ProvinceChina

Early identification and treatment of stroke can greatly improve patient outcomes and quality of *** clinical tests such as the Cincinnati Pre-hospital Stroke Scale(CPSS)and the Face Arm Speech Test(FAST)are commonly used for stroke screening,accurate administration is dependent on specialized *** this study,we proposed a novel multimodal deep learning approach,based on the FAST,for assessing suspected stroke patients exhibiting symptoms such as limb weakness,facial paresis,and speech disorders in acute *** collected a dataset comprising videos and audio recordings of emergency room patients performing designated limb movements,facial expressions,and speech tests based on the *** compared the constructed deep learning model,which was designed to process multi-modal datasets,with six prior models that achieved good action classification performance,including the I3D,SlowFast,X3D,TPN,TimeSformer,and *** found that the findings of our deep learning model had a higher clinical value compared with the other ***,the multi-modal model outperformed its single-module variants,highlighting the benefit of utilizing multiple types of patient data,such as action videos and speech *** results indicate that a multi-modal deep learning model combined with the FAST could greatly improve the accuracy and sensitivity of early stroke identification of stroke,thus providing a practical and powerful tool for assessing stroke patients in an emergency clinical setting.

关键词： artificial intelligence deep learning diagnosis early detection FAST screening stroke

光电子能谱的X射线对TATB、TNT表面结构的影响

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含能材料 2005年第B12期13卷 27-29页

作者：徐涛王丽鑫中国工程物理研究院化工材料研究所四川绵阳621900

采用X射线光电子能谱（XPS）中的双阳极big Kα射线（1253．6eV）作为辐射源，对TATB、TNT表面进行持续照射，并采用XPS对其表面效应进行了研究。研究结果表明TATB表面的NH2／NO2含量之比在前20min随着时间的延长逐渐增大，在30-60min... 详细信息

采用X射线光电子能谱（XPS）中的双阳极big Kα射线（1253．6eV）作为辐射源，对TATB、TNT表面进行持续照射，并采用XPS对其表面效应进行了研究。研究结果表明TATB表面的NH2／NO2含量之比在前20min随着时间的延长逐渐增大，在30-60min之间呈稳定趋势；TNT在X射线照射下放气量很大，元素分析结果表明C元素和O元素含量在10min以后有升高的趋势，而对应的N元素含量相应减少。

关键词：物理化学 X射线光电子能谱炸药表面结构 TATB TNT

Controlled cationic ring-opening polymerization of L-lactide by organic ion pair: novel approach to isotactic-rich and crystalline polylactide

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Science China Chemistry 2025年第1期68卷 394-402页

作者： Zhiqiang Ding Mingqian wang Zijing Zhou Bin wang Yuesheng li Tianjin Key Laboratory of Composite & Functional Materials School of Materials Science and Engineering Tianjin University

living/controlled cationic ring-opening polymerization （ROP） of L-lactide is a promising approach to isotactic-rich and crystalline poly（L-lactide）.In contrast with the unsubstituted lactones,L-LA can not be polymerized by organic Lewis acids or carbenium ions,and the state of the art in this field is the cationic ROP of L-LA catalyzed by Br?nsted acid/alcohol system via activated monomer ***,we reported the first example of controlled cationic ROP of L-LA by using Meerweintype ion pair[Me3O]+[B（C6F5）4]-as the catalyst.[Me3O]+[B（C6F5）4]-promoted rapid L-LA cationic polymerization in the absence of alcohol,producing isotactic-rich and crystalline PLLA without transesterification and epimerization side *** activated chain end mechanism,involving twice SN2 substitution and configuration-inversion （S→R→S） with the assistance of released Me2O,was proposed and further verified by density functional theory and control *** work expands the catalytic toolbox of isotactic-rich and crystalline polylactide *** represents a unique example of cationic-controlled polymerization of L-LA catalyzed by an organic ion pair.

关键词： organic ion pair controlled cationic ring-opening polymerization activated chain end mechanism isotactic-rich polylactide

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HEV车载快速充电系统的实现

电机与控制学报 2007年第4期11卷 429-433页

作者：王立欣刘超哈尔滨工业大学电气工程及其自动化学院黑龙江哈尔滨150001

介绍了混合动力电动车(HEV)车载充电系统的硬件实现方法及软件的程序流程。根据马斯三定律确定了分段恒流与脉冲充电相结合的智能快速充电策略,缩短了充电时间,提高了充电效率。实验结果表明所提出的智能脉冲充电策略可以实现交流侧单... 详细信息

介绍了混合动力电动车(HEV)车载充电系统的硬件实现方法及软件的程序流程。根据马斯三定律确定了分段恒流与脉冲充电相结合的智能快速充电策略,缩短了充电时间,提高了充电效率。实验结果表明所提出的智能脉冲充电策略可以实现交流侧单位功率因数,直流侧电压电流可调等特性。

关键词：混合动力电动车快速充电策略电流控制