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中山大学学报（自然科学版）（中英文） 2022年第4期61卷 79-84页

作者：马允安庆医药高等专科学校药学院安徽安庆246052

UiO-66的合成中通常加入酸性物质作为酸度调节剂。以ZrCl_(4)为前驱体、对苯二甲酸为有机配体、N,N-二甲基甲酰胺为溶剂,采用水热法制备了UiO-66,通过向前驱体溶液中加入不同体积的hAc考察酸度调节剂对UiO-66结构和性能的影响。使用热... 详细信息

UiO-66的合成中通常加入酸性物质作为酸度调节剂。以ZrCl_(4)为前驱体、对苯二甲酸为有机配体、N,N-二甲基甲酰胺为溶剂,采用水热法制备了UiO-66,通过向前驱体溶液中加入不同体积的hAc考察酸度调节剂对UiO-66结构和性能的影响。使用热重、红外光谱、X射线衍射、扫描电镜、透射电镜、氮吸附脱附对样品进行表征分析,并以头孢曲松钠为降解污染物,考察了UiO-66可见光催化降解头孢抗生素的效率。结果显示,添加hAc的UiO-66结构更规整,在可见光区域具有更强的吸收能力。未添加hAc时,UiO-66呈小颗粒圆形,比表面积为695.4358 m^(2)/g,可见光照射120 min对头孢曲松钠的降解率为29.46%。随着hAc添加量的增大,UiO-66的粒径逐渐增加,当n(ZrCl_(4))∶n(h_(2)BDC)∶n(hAc)=1∶1∶200时,UiO-66具有更规则的八面体结构,其比表面积高达1270.8211 m^(2)/g,可见光照射120 min对头孢曲松钠的降解率为50.77%。

关键词： UiO-66 hAc 调节剂合成头孢抗生素

Characteristics of helium accumulation in the Guanzhong Basin, China

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China Geology 2019年第2期2卷 218-226页

作者： Min Dong Zong-xiu Wang hui Dong Li-cheng ma Lin-yan Zhang Institute of Geomechanics Chinese Academy of Geological SciencesChina Geological SurveyMinistry of Natural ResourcesBeijing 100081China Key Lab of Shale Oil and Gas Geological Survey Chinese Academy of Geological SciencesChina Geological SurveyMinistry of Natural ResourcesBeijing 100081China Xi’an Center China Geological SurveyMinistry of Natural ResourcesXi’an 710054China

Guanzhong Basin is located in the transitional zone between the Qinling orogenic belt and the Ordos plateau. Analyses of drill and geothermal wells depict that the Guanzhong Basin has abundant gas, and its major source rocks are the U-rich granites. In this study, the granitoid intrusive samples were collected from the huashan, Baoji, Muhuguan rocks in Guanzhong Basin. A micro laser raman spectrum examination was used to measure the composition of inclusion in the granite quartz fissures. The results depict that the inclusions include both gas-liquid and h2O-NaCl-CO2 inclusions and that their composition primarily includes h2O and CO2, with small amounts of Ch4, h2 and h2S. These inclusions can be classified into nearly-primary, early secondary, and late secondary inclusions, which have homogenization temperatures of greater than 430℃, 330-370℃ and 170-230℃, respectively, based on the inclusion measurements. Additionally, the apatite fission-track investigations of six samples, which were collected from the granites at huashan, Baoji rocks and the southern margin of Muhuguan along with the Cretaceous Sigou Formation sandstones that are located in the northwestern margin of the Guanzhong Basin reveal that the northern Guanzhong Basin began to receive deposits as early as 84 -69 ma. This period was accompanied by the rapid uplift of the Qinling orogenic belt, which was followed by an uplift of the southern basin margin and the Qinling orogenic belt from 44-28 ma. The authors obtained an age histogram and a probability density distribution of three sample points. The results show that the age spectra of the zircons in the Cretaceous Sigou Formation sandstones can be divided into four tectonic events. Combined with the ages of apatite fission tracks and zircon, the Guanzhong Basin has experienced five tectonic stages as follows: 28-84 ma, 170-260 ma, 280-510 ma, 610-1200 ma, and 1210-2870 ma. Using the thermal chronology constraints, inclusion composition analyses, whic

关键词： Guanzhong Basin Fluid inclusions Thermochronology helium reservoir accumulation

石墨烯复合橡胶改性沥青生产及成品检测指标分析

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价值工程 2024年第20期43卷 123-127页

作者：左强蔡乾东宋军兴边瑞鹏马靖龙甘肃路桥第三公路工程有限责任公司兰州730050 陕西东道特种路面科技有限公司西安712000 甘肃格瑞工程检测有限公司兰州730050

为掌握石墨烯复合橡胶改性沥青的技术特性,在总结复合改性材料组成、生产工艺及质量控制要点的基础上,选取实体工程连续进场的68车沥青成品检测数据样本,通过统计与对比石墨烯复合橡胶改性沥青、SBS改性沥青的技术性能、指标波动规律及... 详细信息

为掌握石墨烯复合橡胶改性沥青的技术特性,在总结复合改性材料组成、生产工艺及质量控制要点的基础上,选取实体工程连续进场的68车沥青成品检测数据样本,通过统计与对比石墨烯复合橡胶改性沥青、SBS改性沥青的技术性能、指标波动规律及技术特性,经综合分析表明:石墨烯复合橡胶改性沥青呈现出黏度大、施工温度高、抗老化及综合性能显著等特性;施工时,应尽量避免长时间在180℃以上运输及储存,到场后最佳施工时间不易超过24h,以供类似工程参考。

关键词：沥青路面石墨烯复合橡胶改性沥青生产工艺成品检测质量控制

Adakitic rocks at convergent plate boundaries:Compositions and petrogenesis

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Science China Earth Sciences 2020年第12期63卷 1992-2016页

作者： Qiang Wang Lulu hao Xiuzheng Zhang Jinsheng Zhou Jun Wang Qiwei Li Lin ma Long Zhang Yue Qi Gongjian Tang Wei Dan Jingjing Fan State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing100049China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing100101China

Adakitic rocks are intermediate-acid magmatic rocks characterized by enrichment in light rare-earth elements,depletion in heavy rare-earth elements,positive to negligible Eu and Sr anomalies,and high La/Yb and Sr/Y *** adakitic rocks generated by partial melting of subducted oceanic crust(slab)under eclogite-facies conditions(i.e.,the original definition of“adakite”)occur mainly in Pacific rim volcanic arcs(intra-oceanic,continental,and continental-margin island arcs),whereas those generated by partial melting of thickened lower crust occur mainly in Tethyan Tibetan collisional *** volcanic arcs,adakitic melts derived from the melting of subducted oceanic crust metasomatize the mantle wedge to form a unique rock suite comprising adakite-adakite-type high-Mg andesite-Piip-type high-Mg andesite-Nb-rich *** suite differs from the basalt-andesite-dacite-rhyolite suite formed from mantle wedge metasomatized by fluids derived from subducted oceanic *** published data indicate that partial melting of mafic rocks can generate adakitic magmas under pressure,temperature,and hydrous conditions of 1.2-3.0 GPa,800-1000℃,and 1.5-6.0 wt.%h_(2)O,respectively,leaving residual minerals of garnet and rutile with little or no *** Au and Cu deposits occur proximally to adakitic rocks,with host rocks of some deposits actually being adakitic *** rocks thus have important implications for both deep-Earth dynamics and Cu-Au mineralization/*** studies of Cenozoic adakitic rocks have made many important advances,there remain weaknesses in some important areas such as their tectonic settings,petrogenesis,magma sources,melt-mantle interactions of pre-Cenozoic adakitic rocks,and their relationship with the onset of plate tectonics and crustal *** research directions are likely to involve(1)the generation of adakitic magmas by experimental simulations of partial melting of different types of ro

关键词： Adakite Subduction zone Collisional zone Petrogenesis Metallogenesis Dynamic process

Synergy mechanism of defect engineering in MoS_(2)/FeS_(2)/C heterostructure for high-performance sodium-ion battery

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Journal of Energy Chemistry 2023年第7期82卷 268-276,I0006页

作者： Linlin ma Xiaomei Zhou Jun Sun Pan Zhang Baoxiu hou Shuaihua Zhang Ningzhao Shang Jianjun Song hongjun Ye hui Shao Yongfu Tang Xiaoxian Zhao Department of Chemistry College of ScienceHebei Agricultural UniversityBaoding 071001HebeiChina hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004HebeiChina College of Chemistry Nankai UniversityTianjin 300071China Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004HebeiChina College of Physics Qingdao UniversityQingdao 266071HebeiChina CIrImaT UniversitéPaul Sabatier31062 ToulouseFrance

MoS_(2) is a promising anode material in sodium-ion battery technologies for possessing high theoretical ***,the sluggish Na^(+) diffusion kinetics and low electronic conductivity hinder the ***,a unique MoS_(2)/FeS_(2)/C heterojunction with abundant defects and hollow structure(MFChhS)was *** synergy of defect engineering in MoS_(2),FeS_(2),and the carbon layer of MFChhS with a larger specific surface area provides multiple storage sites of Na^(+)corresponding to the surface-controlled *** MoS_(2)/FeS_(2)/C heterostructure and rich defects in MoS_(2) and carbon layer lower the Na^(+) diffusion energy ***,the construction of MoS_(2)/FeS_(2) heterojunction promotes electron transfer at the interface,accompanying with excellent conductivity of the carbon layer to facilitate reversible electrochemical *** abundant defects and mismatches at the interface of MoS_(2)/FeS_(2) and MoS_(2)/C heterojunctions could relieve lattice stress and volume change *** a result,the MFChhS anode exhibits the high capacity of 613.1 ma h g^(-1)at 0.5 A g^(-1) and 306.1 ma h g^(-1) at 20 A g^(-1).The capacity retention of 85.0%after 1400 cycles at 5.0 A g^(-1) is *** density functional theory(DFT)calculation and in situ transmission electron microscope(TEM),raman,ex-situ X-ray photon spectroscopy(XPS)studies confirm the low volume change during intercalation/deintercalation process and the efficient Na^(+)storage in the layered structure of MoS_(2) and carbon layer,as well as the defects and heterostructures in *** believe this work could provide an inspiration for constructing heterojunction with abundant defects to foster fast electron and Na^(+) diffusion kinetics,resulting in excellent rate capability and cycling stability.

关键词： Defect engineering heterostructure hollow structure Sodium-ion battery MoS_(2)/FeS_(2)

A discussion about boundary conditions in numerical simulation and its application in mining-induced rock mass movement

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A discussion about boundary conditions in numerical simulati...

On-surface synthesis and edge states of NBN-doped zigzag graphene nanoribbons

中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： h.J.Zhao F.S.ma Y.M.Zhang J.Guo A.h.Wei Key Laboratory of Engineering Geomechanics Institute of Geology and GeophysicsChinese Academy of Sciences

In numerical simulation of excavation in high tectonic stress field,the correctness of initial geo-stress field obtained by numerical simulation directly influences the final *** on a series of discussions,an improved effective method for back analysis of initial geo-stress was established and carried out by FLAC *** study the special effects of high tectonic stress on excavating works,a typical mining-induced ground movement caused by underground mining in Jinchuan No.2 mine is *** results indicated that the back analysis method can achieve reasonable and reliable initial geo-stress *** of different mechanisms of rock mass movement in high tectonic stress field,the mining-induced ground movement has distinctive characteristics compared with level coal mining.

关键词： numerical modeling rock stress mining rock mass

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Nano research 2023年第7期16卷 10436-10442页

作者： Xiao Chang Li huang Yixuan Gao Yubin Fu Ji ma huan Yang Junzhi Liu Xiaoshuai Fu Xiao Lin Xinliang Feng Shixuan Du hong-Jun Gao University of Chinese Academy of Sciences Beijing 100190China Beijing National Center for Condensed matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Center for Advancing Electronics Dresden(CfAED)and Faculty of Chemistry and Food Chemistry Technische Universität DresdenDresden D-01069Germany max Planck Institute of Microstructure Physics Weinberg 2Halle 06120Germany Department of Chemistry State Key Laboratory of Synthetic ChemistryThe University of Hong KongHong Kong 999077China Songshan Lake materials Laboratory Dongguan 523808China

Zigzag graphene nanoribbons(ZGNrs)with spin-polarized edge states have potential applications in carbon-based *** electronic structure of ZGNrs can be effectively tuned by different widths or dopants,which requires delicately designed ***,we report the successful synthesis of ZGNr with a width of eight carbon zigzag lines and nitrogen-boronnitrogen(NBN)motifs decorated along the zigzag edges(NBN-8-ZGNr)on Au(111)surface,which starts from a specially designed U-shaped monomer with preinstalled NBN units at the zigzag ***-bond-resolved non-contact atomic force microscopy(nc-AFM)imaging confirms the zigzag-terminated edges and the existence of NBN *** electronic states distributed along the zigzag edges have been revealed after a silicon-layer intercalation at the interface of NBN-8-ZGNr and Au(111).Our work enriches the ZGNr family with a new dopant and larger width,which provides more candidates for future carbonbased nanoelectronic and spintronic applications.

关键词： zigzag graphene nanoribbons nitrogen-boron-nitrogen(NBN)dopant edge states scanning tunneling microscopy(STM) non-contact atomic force microscopy(nc-AFM) density functional theory(DFT)calculations

relationship between the cytotoxin-associated gene-A status of h pylori strains and cerebral infarction in European Caucasians and Chinese han: A meta-analysis

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World Journal of Gastroenterology 2008年第8期14卷 1286-1292页

作者： Shuo Zhang Yang Guo Yan ma Yue Teng Department of Neurology the ShengJing Hospital China Medical University Shenyang110004 Liaoning Province China Department of Ultrasound the ShengJing HospitalChina Medical University Shenyang 110004 Liaoning ProvinceChina Second Clinical College China Medical UniversityShenyang 110004 Liaoning Province China

AIM： To study the relationship between the cytotoxinassociated gene-A （CagA） status of h pylori strains and cerebral infarction among European Caucasians and Chinese han by conducting a meta-analysis.METhODS： Ten case-control studies, with data on a total of 907 cases and 966 controls, were retrieved and considered; disqualified studies were excluded. The included studies were then tested for heterogeneity, and a meta-analysis was performed.rESULTS： The combined data revealed CagA-bearing strains of hpylori which cause chronic infection are associated with an increased risk of cerebral infarction （Or = 2.66, 950 CI： 2.17-3.26）, but no such relationship was found with CagA-negative strains （Or = 0.74, 95% CI： 0.49-1.10） in the overall population. We performed subgroup analyses, dividing the overall population into European Caucasians and Chinese han subgroups, and analyzed the studies according to their subgroup classification. Through the subgroup analysis, an association between cerebral infarction and CagAbearing strains was found in both subgroups （Or = 2.60, 95% CI： 1.93-3.49 in Chinese han; Or = 2.71, 95% CI： 2.05-3.59 in European Caucasians）, but no significant association was found between cerebral infarction and CagA-negative strains （Or = 0.81, 95% CI： 0.45-1.48 in Chinese han; Or = 0.64, 95% CI： 0.37-1.09 in European Caucasians）.CONCLUSION： These results suggest CagA-bearing strains of h pylori are significantly associated with susceptibility to cerebral infarction in Chinese han and European Caucasians, but that CagA-negative strains are not a definite predisposing factor in either subgroup. The magnitude of this association with cerebral infarction needs to be confirmed by prospective studies and combined studies of hpylori eradication.

关键词： Cytotoxin-associated gene-A h pylori Cerebral infarction Meta-analysis

room-temperature hydrogenation of halogenated nitrobenzenes over metal-organic-framework-derived ultra-dispersed Ni stabilized by N-doped carbon nanoneedles

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Frontiers of Chemical Science and Engineering 2022年第12期16卷 1782-1792页

作者： Yuemin Lin Yuanyuan Zhang renfeng Nie Kai Zhou Yao ma Mingjie Liu Dan Lu Zongbi Bao Qiwei Yang Yiwen Yang Qilong ren Zhiguo Zhang Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China School of Chemical Engineering Henan Center for Outstanding Overseas ScientistsZhengzhou UniversityZhengzhou 450001China Institute of Zhejiang University—Quzhou Quzhou 324000China

Ultra-dispersed Ni nanoparticles(7.5 nm)on nitrogen-doped carbon nanoneedles(Ni@NCNs)were prepared by simple pyrolysis of Ni-based metal–organic-framework for selective hydrogenation of halogenated nitrobenzenes to corresponding *** different crystallization methods(stirring and static)were compared and the optimal pyrolysis temperature was ***@NCNs were systematically characterized by wide analytical *** the hydrogenation of p-chloronitrobenzene,Ni@NCNs-600(pyrolyzed at 600°C)exhibited extraordinarily high performance with 77.9 h^(–1)catalytic productivity and>99%p-chloroaniline selectivity at full p-chloronitrobenzene conversion under mild conditions(90°C,1.5 MPa h2),showing obvious superiority compared with reported Ni-based ***,the reaction smoothly proceeded at room temperature with full conversion and>99%***,Ni@NCNs-600 afforded good tolerance to various nitroarenes substituted by sensitive groups(halogen,nitrile,keto,carboxylic,etc.),and could be easily recycled by magnetic separation and reused for 5 times without *** adsorption tests showed that the preferential adsorption of–NO2 on the catalyst can restrain the dehalogenation of p-chloronitrobenzene,thus achieving high p-chloroaniline *** the high activity can be attributed to high Ni dispersion,special morphology,and rich pore structure of the catalyst.

关键词： halogenated nitrobenzenes room-temperature hydrogenation Ni nanoparticles nitrogen-doped carbon nanoneedles metal–organic-framework