|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Genesis of the Hongzhen metamorphic core complex and its tectonic implications显示文摘The Hongzhen metamorphic core complex is situated in the Yangtze plate to the east of the Dabie oro- genic belt. Its ductile detachment zone in the foot wall overprints on the metamorphic complex of the Proterozoic Dongling Group. The present profile of the ductile shear zone with consistent SW-dipping mineral elongation lineation shows antiform and reversed S-shape from northeast to southwest respectively. Exposure structures, microstructures and quartz C-axis fabric all indicate top-to-SW movement for the ductile shear zone. Recrystallisation types of quartz and feldspar in the mylonites demonstrate that the shear zone was developed under the amphibolite facies condition and at mid-crust levels. The metamorphic core complex formed in the Early Cretaceous with a muscovite plateau age of 124.8±1.2 Ma. Regional NE-SW extension along a SW-dipping, gentle detachment zone was responsible for formation of the core complex. Intrusion of the Hongzhen granite with a biotite plateau age of 124.8±1.2 Ma rendered the ductile shear zone curved, uplifted and final localization of the core complex. The Hongzhen metamorphic core complex suggests that the Early Cretaceous magma- tism in this region took place under the condition of regional extension and the eastern Yangtze plate also experienced lithospheric thinning. | ZHU Guang XIE ChengLong XIANG BiWei HU ZhaoQi WANG YongSheng LI Xing | 2007 | Science China Earth Sciences2007，50，5： | 10 |
| 2 | Early Cretaceous uplift history of the Dabie orogenic belt: Evidence from pluton emplacement depths显示文摘The North Dabie complex unit(NDC)is a widely exposed petro-tectonic unit.To understand post-orogenic uplift history and mechanism of the Dabie orogenic belt,many samples of granite,granodiorite,diorite,and alkali feldspar granite with precise zircon U-Pb ages were collected for electron microprobe analysis of hornblende.Emplacement pressure values were then calculated by using an Al-in-hornblende geobarometer.The result shows that total Al(AlT)values in hornblende range from 1.17to 1.97 p.f.u.,XFe(=Fe/(Fe+Mg))from 0.4 to 0.65,and corresponding pressure values from 256.8 to 676.2 MPa for AlT greater than 1.17.It is suggested that although the main mechanism for the uplift is tectonic extension,inhomogeneous uplift related to the pluton emplacement is also important during post-orogenic evolution of the Dabie orogenic belt.Emplacement depth distribution of the plutons shows that uplift in the NDC is affected by horst-graben structures since 120 Ma. | WANG YongSheng WANG HaiFeng SHENG Yong XIANG BiWei | 2014 | Science China Earth Sciences2014，57，5： | 8 |
| 3 | K-Ar dating of extensional fault gouge from the Yi-Shu segment of the Tan-Lu fault zone显示文摘Two grabens were developed in the Yi-Shu segment of the Tan-Lu fault zone (TLFZ) during its exten-sional activities, and are now confined by four major NNE-trending normal faults and filled with Creta-ceous sediments. These faults were developed due to their reactivities, containing gouge and cutting the graben sediments. Detailed fieldwork demonstrates that the faults experienced sinistral transten-sional moment related to regional NE-SW extension during the reactivity. X-ray diffraction (XRD) analysis of the finest gouge samples gives illite crystallinity values higher than 0.42o?2θ, indicating temperatures experienced by the gouge samples were less than 150℃ . From the relation between K-Ar data and proportions of detrital illite in different size fractions of the gouge samples, we conclude that refaulting for the western boundary fault of the TLFZ, abbreviated to F4, took place at ca. 90 Ma and for the eastern boundary fault, abbreviated to F1, happened from 70 to 60 Ma. During the two phases of reactivity imposed by the same NE-SW extension, the TLFZ experienced uplifting and no sediments were deposited in the two grabens. It is suggested that the TLFZ experienced extension during the Late Cretaceous, which supports the inference that lithospheric thinning was still undergoing in the east of the North China Craton during the Late Cretaceous magmatic hiatus. | WANG YongSheng ZHU Guang HU ZhaoQi ZHANG BiLong XIANG BiWei XIE ChengLong | 2009 | Science China Earth Sciences2009，52，4： | 5 |
| 4 | Evolution of the Xiaotian-Mozitan fault and its implications for exhumation of Dabie HP-UHP rocks显示文摘The Xiaotian-Mozitan fault(XMF)located north of the Dabie orogenic belt separates the North Dabie complex to the south from the Beihuaiyang low-grade metamorphic rocks to the north.It comprises several NW-striking ductile shear zones and brittle faults.The brit-tle faults obviously overprinted on the ductile shear zones and promoted the development of the volcanic basins in early Cretaceous to the north,which suggests that the brittle faults were normal faults formed in early Cretaceous during doming of the Dabie orogenic belt.The ductile shear zone superposed on the north Dabie gray gneiss,and it is an important channel where the Dabie HP-UHP rocks exhumed.For obtaining new structural constraint on exhumation of the HP-UHP rocks,we present here experimental results on the microstructure,quartz C-axis fabrics and the microprobe analyses of phengite.The ductile shear zone was determined to be formed at a temperature of 600-650°C and pressure of 1.1 GPa by the mineral deformation,microprobe analyses and geobarometry of Si-in-phengite of the mylonite,the results suggest that the mylonite now exposed on the surface experienced an upper amphibolite-facies metamorphism in the lower crust.The mineral stretching lineation varies from horizontal in the east segment to sub-dip in the west.Shear sense indicators from outcrop and thin sections of orientated specimen and quartz C-axis fabrics suggest that the XMF is a sinis-tral normal fault.The kinematics analysis of the ductile shear zone indicates that the exhumation of Dabie HP-UHP rocks is the results of a SE-directed extrusion and an anticlockwise rotation around its eastern pivot simultaneously. | Biwei Xiang Yongsheng Wang Changcheng Li Guang Zhu Yonghong Shi | 2008 | Progress in Natural Science:Materials International2008，18，6： | 3 |
| 5 | Spleen-kidney supplementing formula alleviates insulin resistance via regulating AKT/glycogen synthase kinase 3β pathway in rats with type 2 diabetic induced by high-fat diet显示文摘OBJECTIVE: To explore the molecular mechanism underpinning the action by investigating its effect on glycogen content and AKT(also known as protein kinase B)/glycogen synthase kinase 3β(GSK-3β) pathway in the liver of rats with type 2 diabetic induced by high-fat diet.METHODS: The rat model of type 2 diabetes was induced by high-fat diet and multiple low-dose streptozotocin injection. Diabetic rats were divided into five groups: the model control group, the Metformin group, spleen-kidney supplementing formula groups of low, medium and high doses. Fasting blood glucose(FBG) levels were measured before treatment and every two weeks during treatment.After the treatment, oral glucose tolerance test was performed, and hemoglobin A1c (HbA1c) and C-peptide were measured to assess the formula's effect on glucose metabolism and insulin resistance. The protein expression levels of AKT, GSK-3βand their phosphorylated forms in the liver were also measured to study the formula's role in insulin signaling pathway.RESULTS: Spleen-kidney supplementing formula significantly relieved the symptoms of polydipsia,polyuria and weight loss in type 2 diabetic rats, reduced FBG and HbA1c levels, increased glycogen content, and improved insulin sensitivity. The anti-diabetic effects of spleen-kidney supplementing formula are dose dependent. It also increased the total AKT protein level and the GSK-3β phosphorylation in the liver of type 2 diabetic rats.CONCLUSION: Spleen-kidney supplementing formula has hypoglycemic effect and relieves insulin resistance by enhancing AKT/GSK-3β signaling pathway in the liver of type 2 diabetic rats. | Tian Chunyu Wang Ya La Xiaojin Li Ji'an Zhang Biwei | 2019 | Journal of Traditional Chinese Medicine2019，39，2： | 2 |
| 6 | A Dynamic and Deadline-Oriented Road Pricing Mechanism for Urban Traffic Management显示文摘Road pricing is an urban traffic management mechanism to reduce traffic congestion.Currently,most of the road pricing systems based on predefined charging tolls fail to consider the dynamics of urban traffic flows and travelers’demands on the arrival time.In this paper,we propose a method to dynamically adjust online road toll based on traffic conditions and travelers’demands to resolve the above-mentioned problems.The method,based on deep reinforcement learning,automatically allocates the optimal toll for each road during peak hours and guides vehicles to roads with lower toll charges.Moreover,it further considers travelers’demands to ensure that more vehicles arrive at their destinations before their estimated arrival time.Our method can increase the traffic volume effectively,as compared to the existing static mechanisms. | Jiahui Jin Xiaoxuan Zhu Biwei Wu Jinghui Zhang Yuxiang Wang | 2022 | Tsinghua Science and Technology2022，27，1： | 1 |
| 7 | A novel strategy for boosting the photoluminescence quantum efficiency of CdSe nanocrystals at room temperature显示文摘Highly luminescent colloidal nanocrystals have wide applications in bioimaging and various optoelectronic devices.Herein we report a facile and mild procedure by combining S2-treatment and binary ligand passivation,which can efficiently enhance the luminescent property of CdSe nanocrystals at room temperature.The photoluminescence quantum yield of as-treated CdSe nanocrystals exhibits drastic enhancement(e.g.,188 times for CdSe nanorods)after this dual-passivation treatment.The methodology proposed here can be applied to various CdSe nanocrystals,regardless of their sizes,shapes,and crystal structures. | Biwei Wang Limin Liu Yi Zhang Yonghui Deng Angang Dong | 2020 | Chinese Chemical Letters2020，31，1： | 1 |
| 8 | Challenges and approaches of single-crystal Ni-rich layered cathodes in lithium batteries显示文摘High energy density and high safety are incompatible with each other in a lithium battery,which challenges today's energy storage and power applications.Ni-rich layered transition metal oxides(NMCs)have been identified as the primary cathode candidate for powering next-generation electric vehicles and have been extensively studied in the last two decades,leading to the fast growth of their market share,including both polycrystalline and single-crystal NMC cathodes.Single-crystal NMCs appear to be superior to polycrystalline NMCs,especially at low Ni content(≤60%).However,Ni-rich single-crystal NMC cathodes experience even faster capacity decay than polycrystalline NMC cathodes,rendering them unsuitable for practical application.Accordingly,this work will systematically review the attenuation mechanism of single-crystal NMCs and generate fresh insights into valuable research pathways.This perspective will provide a direction for the development of Ni-rich single-crystal NMC cathodes. | Jiangtao Hu Hongbin Wang Biwei Xiao Pei Liu Tao Huang Yongliang Li Xiangzhong Ren Qianling Zhang Jianhong Liu Xiaoping Ouyang Xueliang Sun | 2023 | National Science Review2023，10，12： | 0 |
| 9 | Ultrathin two-dimensional medium-entropy oxide as a highly efficient and stable electrocatalyst for oxygen evolution reaction显示文摘Medium-entropy oxides(MEOs)with broad compositional tunability and entropy-driven structural stability,are receiving booming attention as a promising candidate for oxygen evolution reaction(OER)electrocatalysts.Meanwhile,ultrathin two-dimensional(2D)nanostructure offers extremely large specific surface area and is therefore considered to be an ideal catalyst structure.However,it remains a grant challenge to synthesize ultrathin 2D MEOs due to distinct nucleation and growth kinetics of constituent multimetallic elements in 2D anisotropic systems.In this work,an ultrathin 2D MEO(MnFeCoNi)O was successfully synthesized by a facile and low-temperature ionic layer epitaxy method.Benefiting from multi-metal synergistic effects within ultrathin 2D nanostructure,this 2D MEO(MnFeCoNi)O revealed excellent OER electrocatalytic performance with a quite low overpotential of 117 mV at 10 mA·cm^(-2) and an impressive stability for 120 h continuous operation with only 6.9%decay.Especially,the extremely high mass activity(5584.3 A·g^(-1))was three orders of magnitude higher than benchmark RuO_(2)(3.4 A·g^(-1))at the same overpotential of 117 mV.This work opens up a new avenue for developing highly efficient and stable electrocatalysts by creating 2D nanostructured MEOs. | Guangyuan Yan Tianlu Wang Biwei Zhao Wenjing Gao Tong Wu Liming Ou | 2024 | Nano Research2024，17，4： | 0 |
| 10 | Unintentional Injury Mortality Among Children Under Five Years--China,2006−2017显示文摘What is already known about this topic?Unintentional injuries among children aged under five years is still a serious public health problem in China.Epidemiological characteristics of under-five unintentional injury are reported in single provinces and cities for China but not nationally based on the Disease Surveillance Points(DSPs)dataset.What is added by this report?Unintentional injury mortality rates for under-five decreased substantially between 2006 and 2017 in China,with the decrease occurring primarily for males and rural children.Children living in rural areas and males had higher unintentional injury mortality rates than children in urban areas and females.The major fatal types of under-five unintentional injury were drowning and road injury.What are the implications for public health practice?Further interventions need to be taken in accordance with the main types of unintentional injuries,especially effective prevention strategies used in other countries or recommended by the World Health Organization(WHO).Even with equal access to injury prevention and control services for different sexes,policy efforts should focus on higher-risk populations,especially children aged under five years who are males or reside in rural areas. | Bo Chen Pengpeng Ye Biwei Tang Siqi Wang Jia Guo Jing Wu | 2020 | China CDC weekly2020，2，10： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员