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Phosphafluorenyl lithiums:direct synthesis from white phosphorus,structure and diversified synthons

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Science China Chemistry 2022年第2期65卷 322-327页

作者： jingyuan hu Zhengqi Chai Wei Liu Zhe huang Junnian Wei Wen-Xiong Zhang Beijing National Laboratory for Molecular Sciences(BNLMS) State Key Laboratory of Rare Earth Materials Chemistry and Applications&Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking UniversityBeijing 100871China

While rich chemistry of phospholyl anions is discovered,phosphafluorenyl anions are only proposed as the critical intermediates for the synthesis of *** this article,we reported the direct synthesis of phosphafluorenyl lithiums from white phosphorus(P_(4))through direct P-C bond *** reaction between P4 and biphenyl dilithio reagents efficiently afforded phosphafluorenyl lithiums,which were further used to synthesize different kinds of organophosphorus *** aggregation states of phosphafluorenyl lithiums were investigated for the first *** studies by DFT calculations revealed a cooperative nucleophilic attack of two C−Li bonds on P_(4)molecule.

关键词： white phosphorus organophosphorus compounds P–C bond formation P_(4)functionalization phosphafluorenyl lithium

Isolation and Characterization of Four Phosphorus Cluster Anions P7^3-,P14^4-,P16^2- and P26^4- from the Nucleophilic Functionalization of white Phosphorus with 1,4-Dilithio-1,3-butadienes

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Chinese Journal of Chemistry 2019年第1期37卷 71-75页

作者： Shanshan Du jingyuan hu Zhengqi Chai Wen-Xiong Zhang Zhenfeng Xi Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking UniversityBeijing 100871China

Summary of main observation and conclusion Studies on the aggregation degrees of negatively charged phosphides derived from the nucleophilic P4 functionalization could help understand the pathway of phosphorus atoms degradation or *** this report,we have isolated and characterized four phosphorus cluster anions (P7^3-,P14^4-,P16^2-,and P26^4-)from the nucleophilic functionalization of P4 with 1,4-dilithio-1,*** phosphorus clusters could be rationalized as the P-atom-containing products besides the main phospholyl *** structural features and 31p NMR behaviors are discussed based on single crystal X-ray diffraction analysis and 31P{1H}COSY NMR analysis.

关键词： Studies phosphorus NMR

A linked data-based approach for clinical treatment selecting support

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Journal of Management Analytics 2014年第4期1卷 301-316页

作者： Lihong Jiang Ling Li Hongming Cai hua Liu jingyuan hu Cheng Xie School of Software Shanghai Jiao Tong UniversityShanghaiChina College of Business&Public Administration Old Dominion UniversityNorfolkUSA Renji Hospital Shanghai Jiao Tong UniversityShanghaiChina

Treatment plan selection is a complex process because it sometimes needs sufficient experience and clinical *** it is even harder for doctors to select an appropriate treatment plan for certain patients since doctors might encounter difficulties in obtaining the right information and analyzing the diverse clinical *** order to improve the effectiveness of clinical decision making in complicated information system environments,we first propose a linked data-based approach for treatment plan *** approach integrates the patients’clinical records in hospitals with open linked data sources out of ***,based on the linked data net,treatment plan selection is carried on aided by similar historical therapy ***,we reorganize the electronic medical records of 97 colon cancer patients using the linked data model and count the similarity of these records to help treatment *** experiment shows the usability of our method in supporting clinical decisions.

关键词： linked data cancer treatment semantic web case-based reasoning clinical decision support

An Experimental Study on Oxidized Mercury Adsorption by Bromide Blended Coal Combustion Fly Ash

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Energy Engineering 2021年第5期118卷 1277-1286页

作者： Mingyu Yu Mengyuan Liu Guangqian Luo Ruize Sun jingyuan hu Hailu Zhu Li Zhong Lipeng Han Xian Li Hong Yao State Key Laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan430074China Shenzhen huazhong University of Science and Technology Research Institute Shenzhen518000China huaneng Clean Energy Technology Research Institute Beijing102209China

The application of forced mercury oxidation technology would lead to an increase of Hg^(2+)concentration in the flue *** Hg^(2+)can be easily removed in the WFGD,the mercury re-emission in the WFGD can decrease the total removal of mercury from coal-fired power ***,it is necessary to control Hg^(2+)concentration in the devices before the *** ash adsorbent is considered as a potential alternative for commercial activated carbon ***,the adsorption efficiency of the original fly ash is *** procedure is needed to enhance the adsorption *** this study,the adsorption of Hg^(2+)by brominated fly ash was *** fly ash was collected from the full-scale power plant utilizing bromide-blended coal combustion *** brominated fly ash exhibited excellent performance for Hg^(2+)*** flue gas component HBr and SO_(2)could improve adsorbent’s performance,while HCl would hinder its adsorption ***,it was demonstrated by Hg-TPD experiments that the adsorbed Hg^(2+)mainly existed on the fly ash surface in the form of HgBr_(2).In summary,the brominated fly ash has a broad application prospect for mercury control.

关键词： Mercury fly ash bromide adsorbents flue gas

Direct and chlorine-free synthesis of phosphafluorenes or their oxides from white phosphorus

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Green Synthesis and Catalysis 2023年第4期4卷 330-333页

作者： jingyuan hu Zhengqi Chai Wei Liu Junnian Wei Ze-Jie Lv Wen-Xiong Zhang Beijing National Laboratory for Molecular Sciences(BNLMS) State Key Laboratory of Rare-earth Materials Chemistry and Applications&Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Institute of Inorganic Chemistry University of GöottingenGöottingen 37077Germany

The known methods for the preparation of acylphosphine oxides and polyfluorobenzene-substituted triarylphosphines need to utilize PCl_(3),while the chlorine-free methods are not *** this work,we report a chlorine-free method by one-pot three-component reaction of white phosphorus(P_(4)),dilithio reagents,and acyl chlorines or polyfluorobenzenes for the synthesis of biphenyl-based acylphosphine oxides and *** reaction is green and environmentally friendly compared with the traditional method,because it avoids the use of Cl_(2) and the discharge of a large amount of waste gas and waste *** two products have potential applications as photoinitiators in photopolymerization or as organophosphorus ligands in catalytic reactions.

关键词： White phosphorus Dilithio reagents Acylphosphine oxides Triarylphosphines

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编码强度对字体大小效应的影响

心理学报 2020年第10期52卷 1156-1167页

作者：赵文博姜英杰王志伟胡竞元东北师范大学心理学院长春130024

本研究采用3个实验考察编码强度对字体大小效应的影响,探讨由于知觉特征而引发的元认知错觉的内在产生机制(实验1)与有效的矫正措施(实验2和实验3)。结果发现:(1)大字体词语的知觉流畅性显著优于小字体,并且贝叶斯多层中介分析结果表明... 详细信息

本研究采用3个实验考察编码强度对字体大小效应的影响,探讨由于知觉特征而引发的元认知错觉的内在产生机制(实验1)与有效的矫正措施(实验2和实验3)。结果发现:(1)大字体词语的知觉流畅性显著优于小字体,并且贝叶斯多层中介分析结果表明,知觉流畅性对字体大小效应起部分中介作用(实验1);(2)随着编码强度的增加,由字体大小引起的学习判断错觉逐渐消失(实验2和实验3)。以上结果表明,刺激的知觉特征(字体大小)对个体学习判断的影响,随编码强度激活线索的增加而逐渐减弱。这一结果为真实教学情境中提高学习者的编码强度,进而削弱学习判断对知觉特征线索的依赖,并准确地监测自身的学习进程提供了科学依据。

关键词：学习判断字体大小效应编码强度元认知错觉

云南热带亚热带发育于弱磁性砂岩的土壤磁性特征及其环境意义

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热带地理 2023年第11期43卷 2229-2240页

作者：陈宇东李海侠张小凌胡金李刚强胡静远昆明理工大学国土资源工程学院昆明650093 玉溪师范学院云南玉溪653100

选取云南不同气候区发育于弱磁性砂岩的土壤剖面,分析磁性差异及其对气候变化的响应,探讨赤铁矿和针铁矿与气候因素的关系。结果表明:1)位于热带亚热带地区的峨山(EF)、普洱(PF)和景洪(F)土壤中亚铁磁性矿物主要为磁赤铁矿和磁铁矿,不... 详细信息

选取云南不同气候区发育于弱磁性砂岩的土壤剖面,分析磁性差异及其对气候变化的响应,探讨赤铁矿和针铁矿与气候因素的关系。结果表明:1)位于热带亚热带地区的峨山(EF)、普洱(PF)和景洪(F)土壤中亚铁磁性矿物主要为磁赤铁矿和磁铁矿,不完全反铁磁性矿物为针铁矿和赤铁矿。EF土壤中亚铁磁性矿物含量相对较高,PF和F土壤中针铁矿和赤铁矿的含量相对较高;3个研究区均含大量的细粒(超顺磁、单畴等)磁性矿物。2)土壤磁化率与温度和降水无显著相关性,难以作为该区域的气候代用指标。3)赤铁矿和针铁矿比值Hm/Gt和Hm/(Hm+Gt)与温度有良好的对应关系,在指示温度方面有应用潜力。

关键词：热带亚热带地区不同气候带砂岩风化壳剖面磁学参数环境意义云南

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汽车用5754铝合金板成形极限的理论预测与实验研究

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热加工工艺 2017年第17期46卷 137-140页

作者：胡静远王孟君唐建国中南大学材料科学与工程学院湖南长沙410083

基于M-K理论模型,分别使用Von Mises和Logan-Hosford两种屈服准则对5754铝合金"O"态板的成形极限曲线进行了预测,分析了板材的初始厚度不均匀度、屈服函数指数等对板材成形极限曲线的影响规律;通过凸模胀形实验获得了板材的极限应变数据... 详细信息

基于M-K理论模型,分别使用Von Mises和Logan-Hosford两种屈服准则对5754铝合金"O"态板的成形极限曲线进行了预测,分析了板材的初始厚度不均匀度、屈服函数指数等对板材成形极限曲线的影响规律;通过凸模胀形实验获得了板材的极限应变数据,并与预测曲线进行了对比。结果表明:基于M-K理论模型结合Logan-Hosford屈服准则的预测曲线与实验数据吻合较好。

关键词： 5754铝合金成形极限曲线 M-K模型屈服准则

Photo‑Energized MoS_(2)/CNT Cathode for High‑Performance Li–CO_(2)Batteries in a Wide‑Temperature Range

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Nano-Micro Letters 2025年第1期17卷 160-175页

作者： Tingsong hu Wenyi Lian Kang hu Qiuju Li Xueliang Cui Tengyu Yao Laifa Shen Jiangsu Key Laboratory of Materials and Technologies for Energy Storage College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Li–CO_(2) batteries are considered promising energy storage systems in extreme environments such as Mars;however,severe performance degradation will occur at a subzero temperature owning to the sluggish reaction ***,a photo-energized strategy adopting sustainable solar energy in wide working temperature range Li–CO_(2) battery was achieved with a binder-free MoS_(2)/carbon nanotube(CNT)photo-electrode as *** unique layered structure and excellent photoelectric properties of MoS_(2) facilitate the abundant generation and rapid transfer of photo-excited carriers,which accelerate the CO_(2) reduction and Li_(2)CO_(3) decomposition upon *** illuminated battery at room temperature exhibited high discharge voltage of 2.95 V and mitigated charge voltage of 3.27 V,attaining superior energy efficiency of 90.2%and excellent cycling stability of over 120 *** at an extremely low temperature of−30℃,the battery with same electrolyte can still deliver a small polarization of 0.45 V by the photoelectric and photothermal synergistic mechanism of MoS_(2)/CNT *** work demonstrates the promising potential of the photo-energized wide working temperature range Li–CO_(2) battery in addressing the obstacle of charge overpotential and energy efficiency.

关键词： Li-CO_(2)batteries Photo-energized Wide operation-temperature Kinetics MoS_(2)