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水热反应条件对SnO_(2)/bi_(2)WO_(6)复合材料光催化活性的影响

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化学研究与应用 2024年第8期36卷 1710-1717页

作者：郑文礼丁秋平刘可刘梦凡刘晓峰张恒强河北民族师范学院物理与电子工程学院河北承德067000 河北民族师范学院化学与化工学院河北承德067000

本文以不同水热条件制备了正交晶系结构的两种二氧化锡和一种钨酸铋,并制备出了两种由纳米片组成的花状团簇的二氧化锡/钨酸铋复合光催化材料。通过x射线衍射仪、扫描电子显微镜、比表面积孔隙度测试仪、紫外可见分光光度计等手段对三... 详细信息

本文以不同水热条件制备了正交晶系结构的两种二氧化锡和一种钨酸铋,并制备出了两种由纳米片组成的花状团簇的二氧化锡/钨酸铋复合光催化材料。通过x射线衍射仪、扫描电子显微镜、比表面积孔隙度测试仪、紫外可见分光光度计等手段对三种样品的样貌、比表面积、孔隙度、孔体积及吸光度测试表征。用碘钨灯来模拟太阳光,研究对比以不同水热条件下制备的钨酸铋以及两种二氧化锡/钨酸铋复合材料作催化剂催化降解罗丹明b的光催化性能。综合实验数据分析,发现二氧化锡/钨酸铋复合样品的衍射峰与钨酸铋样品的衍射峰一致,不同的水热条件会影响产物的物相结构,但对晶体结构和结晶度无影响。光催化360 min时,水热条件为180℃、12 h的钨酸铋对罗丹明b的降解率是33%、水热条件为180℃、6 h的二氧化锡和180℃、12 h的钨酸铋制备的复合物样品1对罗丹明b的降解率是46%、水热条件为180℃、12 h的二氧化锡和180℃、12 h的钨酸铋制备的复合物样品2对罗丹明b的降解率是57%。二氧化锡/钨酸铋复合样品的催化效果优于纯钨酸铋,同时也说明不同水热反应条件对复合光催化材料的催化性能有一定的影响。

关键词：光催化技术水热反应钨酸铋二氧化锡/钨酸铋

高电压LiCoO_(2)的表面结构与性能:回顾与展望

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电化学（中英文） 2024年第6期30卷 1-23页

作者：方建军杜宇豪李子健樊文光任恒宇易浩聪赵庆贺潘锋北京大学深圳研究生院新材料学院中国深圳518055 乾途电池科技有限公司中国东莞523808

近年来,高电压LiCoO_(2)(LCO)正极的研发成为学术界和工业界广泛关注的焦点。研究表明,解决表面问题是提升高电压LCO性能的最有效途径。本综述系统回顾了高电压LCO所面临的问题,包括相变和裂纹的生成、与氧氧化还原相关的问题以及副反应... 详细信息

近年来,高电压LiCoO_(2)(LCO)正极的研发成为学术界和工业界广泛关注的焦点。研究表明,解决表面问题是提升高电压LCO性能的最有效途径。本综述系统回顾了高电压LCO所面临的问题,包括相变和裂纹的生成、与氧氧化还原相关的问题以及副反应,以及表面结构的退化。接着,我们深入阐述了表面调制,以及表面调制与电解质调制之间的相互作用。最后,我们展望了更先进的LCO正极的发展前景,包括低成本高质量的制造,设计适用于极端条件(如高温、高速充电、低温等)的LCO正极,并实现约220 mAh·g^(-1)的稳定容量释放。我们期望这项工作能为未来推动高电压LCO的发展和应用提供参考。

关键词： LiCoO_(2) 界面结构相转变表面修饰正极电解质界面

On the role of buoyancy force in the ore genesis of SEDEx deposits:Example from Northern Australia

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Science China Earth Sciences 2009年第5期52卷 452-460页

作者： YANG JianWen feng ZuoHai LUO xianRong CHEN YuanRong Department of Resources and Environmental Engineering Guilin University of TechnologyGuilin 541004China Department of Earth and Environmental Sciences University of WindsorOntario N9B 3P4Canada

Finite element modeling on a highly conceptualized 2-D model of fluid flow and heat transport is undertaken to simulate the paleo-hydrological system as if the Mount Isa deposits were being formed in the Mount Isa basin, Northern Australia, and to evaluate the potential of buoyancy force in driving basin-scale fluid flow for the formation of sedimentary-exhalative (SEDEx) deposits. Our numerical case studies indicate that buoyancy-driven fluid flow is controlled mainly by the fault penetration depth and its spatial relation with the aquifer. Marine water recharges the basin via one fault and flows through the aquifer where it is heated from below. The heated metalliferous fluid discharges to the basin floor via the other fault. The venting fluid temperatures are computed to be in the range of 115 to 160°C, with fluid velocities of 2.6 to 4.1 m/year over a period of 1 Ma. These conditions are suitable for the formation of a Mount Isa-sized zinc deposit, provided a suitable chemical trap environment is present. buoyancy force is therefore a viable driving mechanism for basin-scale ore-forming hydrothermal fluid migration, and it is strong enough to lead to the genesis of supergiant SEDEx deposits like the Mount Isa deposit, Northern Australia.

关键词： hydrothermal fluid flow finite element modeling SEDEx deposits Mount Isa basin

基于HS-GC-MS技术探讨不同炮制方法对苍术挥发性成分的影响

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中国中药杂志 2024年第16期49卷 4427-4436页

作者：徐城孟令邦卢美琪黄心悦王鑫龚飞鹏龚千锋于欢江西中医药大学江西南昌330004

苍术的挥发性成分既具有明显的药理作用又被认为是苍术的主要燥性成分,该研究从挥发油变化角度分析苍术不同炮制品的差异,阐述苍术炮制后降燥增效的原因。利用HS-GC-MS技术获取生苍术、麸炒苍术、焦苍术与4种不同工艺的米泔水制苍术挥... 详细信息

苍术的挥发性成分既具有明显的药理作用又被认为是苍术的主要燥性成分,该研究从挥发油变化角度分析苍术不同炮制品的差异,阐述苍术炮制后降燥增效的原因。利用HS-GC-MS技术获取生苍术、麸炒苍术、焦苍术与4种不同工艺的米泔水制苍术挥发性成分,使用SIMCA软件对苍术及其不同炮制品的挥发油成分进行多元统计学分析。在HS-GC-MS结果中共鉴定出87个挥发性成分。在生品中鉴定出76种挥发性成分、麸炒苍术79种、樟帮米泔水制苍术70种、焦苍术81种、湖南米泔水制苍术78种,吉林米泔水制苍术73种、上海米泔水制苍术77种。通过多元统计学分析发现苍术各个炮制品之间具有显著性差异,OPLS-DA模型显示生品与6种炮制品共有28个显著差异性成分。炮制后普遍显著性上升的挥发性成分有11种,分别是α-蒎烯、水芹烯、(1S)-(+)-3-蒈烯、邻异丙基甲苯、D-柠檬烯、α-ocimene、α-异松油烯、silphiperfol-5-ene、silphinene、γ-烯基、germacrene b,可能与其增效有关;炮制后普遍显著性下降的挥发性成分有5种,分别是β-榄香烯、1-methyl-4-(6-methylhept-5-en-2-yl)cyclohexa-1,3-diene、β-selinene、β-倍半水芹烯、苍术酮,可能与其燥性相关。

关键词：挥发性成分苍术多元统计学 HS-GC-MS 中药炮制

基于UHPLC-Q-TOF/MS结合网络药理学与分子对接技术探究益心饮“异病同治”作用机制

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中国临床药理学与治疗学 2024年第1期29卷 11-25页

作者：王业健焦广洋庞涛翁楠高洁李娟陈万生陈卫东张凤安徽中医药大学药学院安徽合肥230012 海军军医大学第二附属医院药剂科上海200003 上海中医药大学中药研究所上海201203 沈阳药科大学中药学院沈阳辽宁110000

目的:根据中医“异病同治”理论,基于UH-PLC-Q-TOF/MS技术、网络药理学、分子对接方法、细胞实验预测益心饮治疗心律失常、心力衰竭、心肌炎的核心靶点及相关信号通路。方法:采用UHPLC-Q-TOF/MS技术,对益心饮的化学成分和给药大鼠入血... 详细信息

目的:根据中医“异病同治”理论,基于UH-PLC-Q-TOF/MS技术、网络药理学、分子对接方法、细胞实验预测益心饮治疗心律失常、心力衰竭、心肌炎的核心靶点及相关信号通路。方法:采用UHPLC-Q-TOF/MS技术,对益心饮的化学成分和给药大鼠入血原形成分进行分析鉴定;并且通过TC-MSP、SwissTargetPrediction等在线数据库获取入血原形成分潜在作用靶点,利用OMIM、Genecard等数据库获取疾病靶点,做Venn图获取交集靶点,并通过STRING11.5数据库构建蛋白质-蛋白质相互作用(PPI)网络,筛选核心靶点,并选用cyto-scape3.9.0构建“疾病-成分-靶点”网络;利用DA-VID数据库对核心靶点进行GO功能和KEGG富集分析,并运用Autodock vina软件进行分子对接验证,并以H9c2细胞对潜在活性成分和靶点进行验证。结果:从益心饮中鉴定得到157个化合物;从大鼠血清中鉴定得到34个化合物,主要包括姜辣素、异甘草素、甘草次酸等化合物,得到139个交集靶点,结合PPI网络筛选得到31个核心靶点,主要含有TNF、IL-6等靶点,KEGG通路富集分析主要涉及TNF信号通路、IL-17信号通路、MAPK信号通路、PI3K-Akt信号通路等。选取TNF、IL-6靶点与主要化合物进行分子对接,对接结果均小于-5kcal/mol。体外细胞实验表明,益心饮能够通过调节TNF、IL-6发挥治疗作用。结论:益心饮主要潜在活性成分可能是异甘草素、甘草次酸、姜辣素、毛蕊异黄酮苷、丹酚酸b,主要通过作用于TNF、IL-6等靶点来调控特定的信号通路,发挥疗效。

关键词：益心饮心力衰竭心律失常心肌炎异病同治 UHPLC-Q-TOF/MS 网络药理学分子对接

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Delayed severe cytokine storm and immune cell infiltration in SARS-CoV-2-infected aged Chinese rhesus macaques

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Zoological Research 2020年第5期41卷 503-516页

作者： Tian-Zhang Song Hong-Yi Zheng Jian-bao Han Lin Jin xiang Yang feng-Liang Liu Rong-Hua Luo Ren-Rong Tian Hou-Rong Cai xiao-Li feng Chao Liu Ming-Hua Li Yong-Tang Zheng Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Kunming National High-Level biosafety Research Center for Non-Human Primates Center for Biosafety Mega-ScienceKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650107China Department of Respiratory and Critical Care Medicine Affiliated Drum Tower Hospital of Nanjing UniversityNanjingJiangsu 210008China National Resource Center for Non-Human Primates National Research Facility for Phenotypic&Genetic Analysis of Model Animals(Primate Facility)Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650107China

As of June 2020, Coronavirus Disease 2019(COVID-19) has killed an estimated 440 000 people worldwide, 74% of whom were aged ≥65 years,making age the most significant risk factor for death caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) infection. To examine the effect of age on death, we established a SARSCoV-2 infection model in Chinese rhesus macaques(Macaca mulatta) of varied ages. Results indicated that infected young macaques manifested impaired respiratory function, active viral replication, severe lung damage, and infiltration of CD11b^+ and CD8^+ cells in lungs at one-week post infection(wpi), but also recovered rapidly at 2 wpi. In contrast, aged macaques demonstrated delayed immune responses with a more severe cytokine storm, increased infiltration of CD11b^+ cells, and persistent infiltration of CD8^+ cells in the lungs at 2 wpi. In addition,peripheral blood T cells from aged macaques showed greater inflammation and chemotaxis, but weaker antiviral functions than that in cells from young macaques. Thus, the delayed but more severe cytokine storm and higher immune cell infiltration may explain the poorer prognosis of older aged patients suffering SARS-CoV-2 infection.

关键词： COVID-19 Non-human primate animal model Elderly Immune response

Case report： A 10 years follow-up of periprosthetic femoral fracture after total hip arthroplasty in osteopetrosis

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Chinese Journal of Traumatology 2017年第3期20卷 173-176页

作者： Zhan-feng Zhang Dan Wang Li-Dong Wu xue-Song Dai Department of Orthopaedic Surgery The First People's Hospital of Huzhou Huzhou Zhejiang 313000 China Department of Orthopaedic Surgery The Second Affiliated Hospital Zhejiang University School of Medicine Hangzhou 310009 China

Osteopetrosis is an inherited disorder characterized by increased bone density and brittle bone quality. Degenerative changes often occur after the age of 40 in patients with osteopetrosis. Operative inter- vention is the primary treatment option if the clinical manifestation of secondary osteoarthritis is severe. A 44-year-old male suffering autosomal dominant osteopetrosis and progressive unilateral hip osteo- arthritis required a total hip arthroplasty. However, there were several technical challenges associated with this procedure including creating a femoral medullary canal and developing a Vancouver type b2 periprosthetic femoral fracture postoperatively. To afford some experience for the management of similar cases, we here present our technical solutions to these problems.

关键词： Osteopetrosis Arthroplasty, replacement, hip Periprosthetic femoral fractures

伴有自杀意念的抑郁症患者犬尿氨酸代谢及与临床症状的动态关联分析

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中华精神科杂志 2024年第5期57卷 290-297页

作者：吴百川陈嘉烨赵冬梅金锋李华蔡亦蕴张慧凤彭代辉沈婷上海交通大学医学院附属精神卫生中心上海200030

目的探讨伴有自杀意念的抑郁症患者犬尿氨酸代谢通路是否存在异常,及与临床症状的动态关系。方法根据DSM-5诊断标准前瞻性纳入2019年7月至2022年7月于上海市精神卫生中心心境障碍就诊的68例抑郁症患者,其中男28例,女40例,年龄[M(Q_(1),Q... 详细信息

目的探讨伴有自杀意念的抑郁症患者犬尿氨酸代谢通路是否存在异常,及与临床症状的动态关系。方法根据DSM-5诊断标准前瞻性纳入2019年7月至2022年7月于上海市精神卫生中心心境障碍就诊的68例抑郁症患者,其中男28例,女40例,年龄[M(Q_(1),Q_(3))]为22.0(17.3,47.8)岁。根据贝克自杀意念量表(beck Scale for Suicide Ideation,bSI)第4、5题认为是否有“弱”或“中等到强烈”的自杀意念将抑郁症患者分为伴自杀意念的抑郁症组(n=41)和不伴自杀意念的抑郁症组(n=27)。同时网络招募性别匹配的健康对照者72名,其中男29名,女43名,年龄为25.5(24.0,36.8)岁。使用24项汉密尔顿抑郁量表(Hamilton Depression Rating Scale-24,HAMD_(24))、汉密尔顿焦虑量表(Hamilton Anxiety Rating Scale,HAMA)、bSI分别评估抑郁症患者的抑郁症状、焦虑症状及自杀意念;并采集空腹静脉血检测所有受试者的血浆犬尿氨酸代谢物水平。对伴自杀意念的抑郁症患者进行随访,在第2、4周末重复抑郁症状、焦虑症状及自杀意念的评估和外周犬尿氨酸代谢物的检测。使用超高效液相色谱-三重四极杆质谱联用仪测定血浆中犬尿氨酸代谢物的水平。对血液学指标对数转化后进行Z-score标准化,不同代谢物的多重比较使用误报率校正。分析基线犬尿氨酸代谢物与量表分之间的关系;采用线性混合效应模型分析随访过程中犬尿氨酸代谢物与量表分的关系。结果抑郁症患者的外周吡啶甲酸(0.39±0.87比-0.23±1.09,t=3.89)、3-羟基犬尿氨酸与犬尿氨酸比值(3-hydroxykynurenine/kynurenine,3-HK/KYN)(0.38±0.85比-0.09±1.01,t=2.98)和3-HK(0.31±0.81比0.14±1.04,t=2.78)低于健康对照(均P0.05)。在伴有自杀意念的抑郁症患者中,基线HAMD_(24)、HAMA评分均与血浆3-HK(HAMD_(24):r=0.38;HAMA:r=0.39)和3-HK/KYN(HAMD_(24):r=0.34;HAMA:r=0.37)水平呈正相关(均Pb=0.04,t=2.46,P<0.05)。结论抑郁症患者存在犬尿氨酸代谢通路异常,3-HK及3-HK/KYN与伴有自杀意念的抑郁症患者的抑郁、焦虑水平存在相关关系,其中3-HK/KYN代表的犬尿氨酸-3-单加氧酶的活性与焦虑水平存在动态关联。

关键词：抑郁症成人犬尿氨酸自杀焦虑

broadband low-frequency acoustic absorber based on metaporous composite

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Chinese Physics b 2022年第6期31卷 444-449页

作者： Jia-Hao xu xing-feng Zhu Di-Chao Chen QiWei Da-JianWu Jiangsu Key Laboratory on Opto-Electronic Technology School of Physics and TechnologyNanjing Normal UniversityNanjing 210023China Key Laboratory of Modern Acoustics School of PhysicsNanjing UniversityNanjing 210093China

broadband absorption of low-frequency sound waves via a deep subwavelength structure is of great and ongoing interest in research and ***,we numerically and experimentally present a design of a broadband lowfrequency absorber based on an acoustic metaporous composite(AMC).The AMC absorber is constructed by embedding a single metamaterial resonator into a porous *** finite element simulations show that a high absorption(absorptance A>0.8)can be achieved within a broad frequency range(from 290 Hz to 1074 Hz),while the thickness of AMC is 1/13of the corresponding wavelength at 290 *** broadband and high-efficiency performances of the absorber are attributed to the coupling between the two resonant absorptions and the trapped *** numerical simulations and experimental results are obtained to be in good agreement with each ***,the high broadband absorption can be maintained under random incident acoustic *** proposed absorber provides potential applications in low-frequency noise reduction especially when limited space is demanded.

关键词： acoustic metamaterial low-frequency acoustic absorber broadband metaporous