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On the time-varying correlations between oil-,gold-,and stock markets:The heterogeneous roles of policy uncertainty in the US and China

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Petroleum Science 2022年第3期19卷 1420-1432页

作者： wen zhao yu-Dong Wang School of Economics and Management Nanjing University of Science and TechnologyNanjing210094China

This paper investigates the effects of economic policy uncertainty(EPU)and monetary policy uncertainty(MPU)in the US and China on oil-stock and gold-stock correlations.A quantile regression approach is employed to analyze the heterogeneous impacts under different market correlation *** findings suggest that the“US impact”prevails across all market correlations in the sample,while“China impact”is found for oil-stock ***,the impacts of EPU and MPU on correlations of different asset pairs exhibit heterogeneity in direction and in different correlation *** and MPU have homogenously negative effects on gold-stock correlations across various correlation ***,in terms of oil-stock correlations,they exhibit more significant and stronger positive impacts in the medium and high correlation regime than in the low correlation *** can provide a better diversification for stock market risks than crude oil during the period of high level of economic uncertainty.

关键词： Policy uncertainty Crude oil Gold Cross-asset correlations Quantile regression

邻菲咯啉·L-α-苯丙氨酸合铜三元配合物的合成及晶体结构

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河南大学学报（自然科学版） 2006年第4期36卷 38-40页

作者：张武姚莉郝允玲崔青霞于兆文河南大学化学化工学院分子与晶体工程研究所河南开封475001

合成了邻菲咯啉.L-α-苯丙氨酸合铜三元配合物[Cu(phen)(-Lphe)(0.5 EtOH)]ClO4,用元素分析、红外光谱和X射线单晶衍射测定对其结构进行了表征.结果表明该晶体属单斜晶系,空间群为P2(1),晶胞参数:a=0.584 92(2)nm,b=2.038 04(5)nm,c=0.9... 详细信息

合成了邻菲咯啉.L-α-苯丙氨酸合铜三元配合物[Cu(phen)(-Lphe)(0.5 EtOH)]ClO4,用元素分析、红外光谱和X射线单晶衍射测定对其结构进行了表征.结果表明该晶体属单斜晶系,空间群为P2(1),晶胞参数:a=0.584 92(2)nm,b=2.038 04(5)nm,c=0.966 68(3)nm,α=90°,β=94.276(2)°,γ=90°,V=1.149 16(6)nm3,Z=2,Mr=529.90,Dc=1.531 Mg/m3,F(000)=543,μ=1.113 mm-1,S=1.045,R1=0.047 7,wR2=0.130 8.

关键词：邻菲咯啉苯丙氨酸铜配合物晶体结构

Lipomatous ependymoma with ZFTA:RELA fusion-positive:A case report

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World Journal of Clinical Cases 2025年第1期13卷 48-55页

作者： Xiao-yu zhao Juan-Han yu Yi-Hua Wang Yi-Xin Liu Lu Xu Lin Fu Ning Yi China Medical University The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Department of Pathology The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Anshan Cancer Hospital Anshan 114000Liaoning ProvinceChina

BACKGROUND Ependymoma with lipomatous differentiation is a rare type of *** ZFTA fusion-positive supratentorial ependymoma is a novel tumor type in the 2021 World Health Organization classification of central nervous system *** fusion-positive lipomatous ependymoma has not been reported to *** SUMMARY We reported a case of a 15-year-old Chinese male who had a sudden convulsion lasting approximately six *** resonance imaging showed a round cystic shadow of approximately 1.9 cm×1.5 cm×1.9 cm under the right parieto-occipital *** examination showed characteristic perivascular pseudorosettes and adipose differentiation in the ***-chemical staining showed that the tumor cells were negative for cytokeratin,NeuN,Syn and p53,but positive for GFAP,vimentin and S-100 ***-ficant punctate intracytoplasmic EMA immunoreactivity was *** level of Ki-67 was about 5%.Genetic analysis revealed ZFTA:RELA fusion.A cranio-tomy with total excision of the tumor was *** follow-up time was 36 months,no evidence of disease recurrence was found in magnetic resonance *** Based on these findings,the patient was diagnosed as a ependymoma with ZFTA fusion and lipomatous *** case report provides information on the microscopic morphological features of ependymoma with ZFTA fusion and lipomatous differentiation,which can help pathologists to make a definitive diagnosis of this tumor.

关键词： Ependymoma Lipomatous Molecular classification Supratentorial ZFTA:RELA fusion Case report

Chemical constituents from Aconitum vaginatum

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Chemical constituents from Aconitum vaginatum

邻菲咯啉·5-甲基-3-羧基水杨醛合铜配合物的合成与晶体结构

中国化学会第9届天然有机化学学术会议

作者： Hang Chang,wen yu zhao,Hui fang Pi~*,Peng Zhang,Han li Ruan School of Pharmacy,Tongji Medical College,Huazhong University of Science and Technology,Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,Wuhan 430030,China

＜正＞Aconitum species have been used as a traditional Chinese medicinal herb for the treatment of rheumatic,arthristis,*** our studies of the roots of Aconitum vaginatum, fifteen compounds were isolated from the ethanol *** structures of them were identified by spectroscopic *** of them were alkaloids:2-（acetylamino）-benzoic

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河南大学学报（自然科学版） 2012年第2期42卷 144-147页

作者：滕洪梅郝允玲张武陶偌偈于兆文河南大学化学化工学院分子与晶体工程研究所河南开封475004 郑州华信学院药学系郑州451150

以5-甲基-3-羧基水杨醛(H2MCS)、邻菲咯啉(phen)、乙酸铜为原料合成了配合物[Cu(phen)(MCS)(H2O)].H2O,用红外光谱和X射线单晶衍射表征了配合物的结构.结果表明该晶体属于三斜晶系,空间群为P-1,晶胞参数:a=0.824 9(3)nm,b=1.009 0(3)nm,... 详细信息

以5-甲基-3-羧基水杨醛(H2MCS)、邻菲咯啉(phen)、乙酸铜为原料合成了配合物[Cu(phen)(MCS)(H2O)].H2O,用红外光谱和X射线单晶衍射表征了配合物的结构.结果表明该晶体属于三斜晶系,空间群为P-1,晶胞参数:a=0.824 9(3)nm,b=1.009 0(3)nm,c=1.185 0(4)nm,α=72.891(7)°,β=89.565(7)°,γ=88.990(8)°,V=0.942 6(5)nm3,Z=2,Mr=457.91,Dc=1.613 42g/cm3,F(000)=470,μ=1.202mm-1,R1=0.055 0,wR2=0.117 5.配合物中铜离子为五配位,处于变形的四方锥形配位环境中.每两个分子间通过π-π堆积和氢键作用形成分子对,然后通过游离水分子和分子对间的氢键作用形成二维层状结构.

关键词：邻菲咯啉 5-甲基-3-羧基水杨醛铜配合物晶体结构

平面正方形配合物取代反应的机理和反位效应(英文)

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化学研究 2013年第4期24卷 331-335页

作者：于兆文张武滕洪梅河南大学化学化工学院河南开封475004

平面正方形配合物反位效应的起因已经困惑了人们将近一个世纪。作者根据平面正方形配合物取代反应的缔合机理,考虑了配体取代反应进行过程中配体间的排斥作用,分析了最易形成的中间体和过渡态2的空间构型;揭示了反位效应的起因,提出了... 详细信息

平面正方形配合物反位效应的起因已经困惑了人们将近一个世纪。作者根据平面正方形配合物取代反应的缔合机理,考虑了配体取代反应进行过程中配体间的排斥作用,分析了最易形成的中间体和过渡态2的空间构型;揭示了反位效应的起因,提出了一种配体排斥理论,从而比较系统和圆满地解释了平面正方形配合物取代反应的反位效应。

关键词：平面正方形配合物取代反应反应机理反位效应

流空间视角下城市网络结构特征及组织模式分析——基于成渝城市群交通流和信息流的对比

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经济论坛 2018年第8期 143-149页

作者：李峥荣徐邓耀文玉钊西华师范大学国土资源学院河南财经政法大学资源与环境学院

基于城市间公路客运及百度指数大数据,借鉴社会网络分析理论和方法,从城市节点、整体网络及组织模式视角,对成渝城市群城市网络进行深入对比研究。结果显示:(1)程度中心度视角下的成渝城市群城市体系具有首位城市垄断性特征,区域城市外... 详细信息

基于城市间公路客运及百度指数大数据,借鉴社会网络分析理论和方法,从城市节点、整体网络及组织模式视角,对成渝城市群城市网络进行深入对比研究。结果显示:(1)程度中心度视角下的成渝城市群城市体系具有首位城市垄断性特征,区域城市外向及内向中心度呈两极分化现象。(2)不同流空间视角下的城市联系均处于弱连接状态。交通流视角下的城市网络出现空间集聚现象,而信息流网络则呈现出相对均衡的发展态势;交通、信息网络中的成渝双核具有较强的对外联系水平,进一步凸显出成渝双核在城市群中的主导地位。(3)交通流视角下的城市组团形成相对完整且稳固的四大板块,信息流视角下的城市组团则处于零散状态,而在核心网络组织结构中,交通流相对紊乱并与城市规模、地理区位等社会经济要素间呈现出一定的相关性,信息流则趋于稳定。(4)在综合城市发育、整体网络、城市组团及核心网络基础上,提出流空间视角下的成渝城市群"轴-辐"式空间组织模式。

关键词：交通流信息流网络结构特征组织模式成渝城市群

Phase transitions in two organic salts based on 1,5-naphthalenedisulfonate

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Science China Chemistry 2016年第1期59卷 114-121页

作者： wenping zhao yu Jin wen Zhang Ordered Matter Science Research Center Southeast University

Two phase transition compounds,diethylammonium 1,5-naphthalenedisulfonate(1)and cyclohexylammonium 1,5-naphthalenedisulfonate(2),were screened from a series of organic salts based on 1,*** phase transition behaviors were studied by differential scanning calorimetry,single-crystal X-ray analysis and dielectric *** 1 and 2 undergo phase transitions at about 202 and 148 K,respectively,accompanied by distinct dielectric *** origin of the phase transitions was ascribed to motional changes of the cations in the crystal lattices.

关键词： phase transition dielectric constant naphthalenedisulfonate organic salt

Root canal therapy combined with endoscopic sinus surgery for odontogenic sinusitis:Efficacy comparison in a cohort study

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World Journal of Clinical Cases 2025年第5期13卷 13-21页

作者： Jun-wen Xiao Ping yu Zhang zhao Department of Stomatology Wuhan No.9 HospitalWuhan 430081Hubei ProvinceChina Department of Otorhinolaryngology People's Hospital of Xishui CountyHuanggang 438200Hubei ProvinceChina Department of Otorhinolaryngology Hubei No.3 People’s Hospital of Jianghan UniversityWuhan 430033Hubei ProvinceChina

BACKGROUND Odontogenic maxillary sinusitis,often triggered by dental issues like periapical periodontitis,significantly contributes to chronic sinusitis,mainly affecting adults around 50 years old,emphasizing the need for a multidisciplinary diagnostic and treatment *** To investigate the therapeutic effect and clinical value of root canal therapy combined with nasal endoscopic surgery compared with simple root canal the-rapy in the treatment of severe odontogenic maxillary sinusitis caused by peria-pical *** The clinical data,diagnosis,and treatment of 200 patients with severe odonto-genic maxillary sinusitis caused by periapical periodontitis from October 2020 to October 2021 were analyzed *** them,63 patients were treated with simple root canal therapy as the control group,and 137 patients were treated with root canal therapy combined with nasal endoscopic surgery as the observation *** therapeutic effect,Lund-Kennedy endoscopic score,paranasal sinus Lund-Mackay score,complication rate,recurrence rate,and patient satisfaction were compared between the two *** First,we compared the effective rates:23 cases were cured,22 were improved,and 8 were ineffective in the control group,yielding a total effective rate of 84.90%.Meanwhile,97 cases were cured,34 improved,and 6 were ineffective in the observation group,resulting in a total effective rate of 95.62%.The observation group had a higher total effective rate compared with the control group(P0.05)was observed in this score between the two *** treatment,the Lund–Kennedy endoscopic score decreased in both *** Lund–Kennedy endoscopic score of the observation group at 3 and 6 mo after treatment was lower compared to that of the control group(P<0.05).Third,we compared the Lund–Mackay score of paranasal *** treatment,there was no si

关键词： Root canal therapy Nasal endoscopic surgery Periapical periodontitis Odontogenic maxillary sinusitis Therapeutic effect Clinical value