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| 1 | Tectonics of South China Continent and its implications显示文摘This paper aims at exploring the tectonic characteristics of the South China Continent(SCC)and extracting the universal tectonic rules from these characteristics,to help enrich the plate tectonic theory and better understand the continental dynamic system.For this purpose,here we conduct a multi-disciplinary investigation and combine it with the previous studies to reassess the tectonics and evolution of SCC and propose that the tectonic framework of the continent comprises two blocks,three types of tectonic units,four deformation systems,and four evolutionary stages with distinctive mechanism and tectonic characteristics since the Neoproterozoic.The four evolutionary stages are:(1)The amalgamation and break-up of the Neoproterozoic plates,typically the intracontinental rifting.(2)The early Paleozoic and Mesozoic intracontinental orogeny confined by plate tectonics,forming two composite tectonic domains.(3)The parallel operation of the Yangtze cratonization and intracontinental orogeny,and multi-phase reactivation of the Yangtze craton.(4)The association and differentiation evolution of plate tectonics and intracontinental tectonics,and the dynamic characteristics under the Meso-Cenozoic modern global plate tectonic regime. | ZHANG GuoWei GUO AnLin WANG YueJun LI SanZhong DONG YunPeng LIU ShaoFeng HE DengFa CHENG ShunYou LU RuKui YAO AnPing | 2013 | Science China Earth Sciences2013，56，11： | 88 |
| 2 | Accurate relocation of earthquakes in central-western China using the double-difference earthquake location algorithm显示文摘The double-difference earthquake relocation algorithm (DD algorithm) has been applied to the accurate relocation of 10057 earthquakes in the central-western China (21°-36°N, 98°-112E°) during the period of 1992-1999. In total, 79706 readings for P waves and 72169 readings for S waves were used in the relocation, and the source parameters of 6496 events were obtained. The relocation results revealed a more complete picture of the hypocentral distribution in the central-western China. In several seismic belts the relocated epicenters present a more defined lineation feature, reflecting the close correlation between the seismicity and the active tectonic structures. The relocated focal depths confirmed that most earthquakes (91 percent of the 6496 relocated events) in the central-western China were located at shallower depths not deeper than 20 km. The distribution of focal depths indicates that the seismogenic layer in the central-western China is located in the upper-mid crust with its thickness no deeper than 20 km. | YANG Zhixian (杨智娴) CHEN Yuntai (陈运泰) ZHENG Yuejun (郑月军) Yü Xiangwei (于湘伟) | 2003 | Science China Earth Sciences2003，46，z2： | 32 |
| 3 | K-Ar dating of late Mesozoic volcanism and geochemistry of volcanic gravels in the North Huaiyang Belt, Dabie orogen: Constraints on the stratigraphic framework and exhumation of the northern Dabie orthogneiss complex显示文摘Two eruption episodes are identified through systematic field investigations and K-Ar dating of the late Mesozoic volcanic rocks in the North Huaiyang belt (NHB), Dabie orogenic belt, of which the earlier volcanic suite termed Maotanchang Fm. (Fm.) occurring at Jinzhai, Xianhualing and Maotanchang, etc., was erupted from 149 Ma to 138 Ma. The other named Xiaotian Fm. mainly distributed at Xiaotian, Shucheng, etc., was formed between 132 Ma and 116 Ma. During the eruption gap of the two volcanic suites deposited a volcano-sedimentary conglomerate layer, which are composed of the multi-compositional gravels, including the North Dabie orthogneiss complex (NDOC), volcanic gravels, etc. These volcanic gravels in the conglomerate layer show identical geochemical and isotopic compositions (87Sr/86Sr(t) =0.7084-0.7092,εNd(t) =-21.8--24.4) to the Maotanchang Fm. volcanic rocks (87Sr/86Sr = 0.7086-0.7102,εNd = -19.2-24.4), but significantly distinct from those of Xiaotian Fm. (87Sr/86Sr = 0.7076-0.7084, εNd= | Yuejun Wang Weiming Fan Feng Guo | 2002 | Chinese Science Bulletin2002，47，20： | 28 |
| 4 | Effect of seed sludge on characteristics and microbial community of aerobic granular sludge显示文摘Aerobic granular sludge was cultivated by using different kinds of seed sludge in sequencing batch airlift reactor.The influence of seed sludge on physical and chemical properties of granular sludge was studied;the microbial community structure was probed by using scanning electron microscope and polymerase chain reaction-denaturing gradient gel electrophoresis(PCR-DGGE).The results showed that seed sludge played an important role on the formation of aerobic granules.Seed sludge taken from beer wastewater treatment plant(inoculum A) was more suitable for cultivating aerobic granules than that of sludge from municipal wastewater treatment plant(inoculum B).Cultivated with inoculum A, large amount of mature granules formed after 35 days operation, its SVI reached 32.75 mL/g, and SOUR of granular sludge was beyond 1.10 mg/(g·min).By contrast, it needed 56 days obtaining mature granules using inoculum B.DGGE profiles indicated that the dominant microbial species in mature granules were 18 and 11 OTU when inoculum A and B were respectively employed as seed sludge.The sequencing results suggested that dominant species in mature granules cultivated by inoculum A were Paracoccus sp., Devosia hwasunensi, Pseudoxanthomonas sp., while the dominant species were Lactococcus raffinolactis and Pseudomonas sp.in granules developed from inoculum B. | Zhiwei Song Yuejun Pan Kun Zhang Nanqi Ren Aijie Wang | 2010 | Journal of Environmental Sciences2010，22，9： | 18 |
| 5 | LA-ICPMS Zircon U-Pb Dating for Three Indosinian Granitic Plutons from Central Hunan and Western Guangdong Provinces and Its Petrogenetic Implications显示文摘典型地, Indosinian graniticplutons 产出的三的 LA-ICPMS 锆石 U-Pb 地球年代学为从在湖南的 Xiema 和 Xiangzikou plutons 的黑云母 monzomitic 花岗石的214.1+ -5.9 妈和210.3+ -4.7 妈的加权平均值~( 206 )Pb/~( 238 ) U 年龄省,并且为从 Napeng pluton 的黑云母花岗石的205.3+ -1.6Ma ,,西方的 Guandong 省分别地,显示出结晶化的类似的迟了的 Indosinian 年龄。在有在华南块(SCB ) 以内的另外的 geochronological 数据 fromIndosinian 花岗石的联合,有约 210 妈和早 Indosinian 花岗石(230-245 妈) 的年龄的那些迟了的 Indosiniangranites 在相同构造背景有类似的岩石成因论,这被建议。在 SCB 以内的 Indosinian 花岗石可能是在压缩政体的变厚的外壳的深溶酌的产品。这些数据为 Indosinian 花岗石的时间、空间的分发和 SCB 的动态进化提供进一步的理解。 | PENG Bingxia WANG Yuejun FAN Weiming PENG Touping LIANG Xinquan | 2006 | Acta Geologica Sinica(English Edition)2006，80，5： | 17 |
| 6 | Prospect of the QTL-qSB-9^(Tq) utilized in molecular breeding program of japonica rice against sheath blight显示文摘The major QTL-qSB-9Tq conferring partial resistance to rice (Oryza sativa L.) sheath blight (Rhizoctonia solani Kühn) has been verified on chromosome 9 of the indica rice cultivar, Teqing. In this study, the prospect of this QTL utilized in molecular breeding program of japonica rice for sheath blight resistance was investigated. Most of the japonica rice cultivars showed lower level of sheath blight resistance than the indica rice cultivars. At the corresponding site of qSB-9Tq, nine typical japonica rice cultivars from different ecological regions or countries proved to possess the susceptible allele(s). Introgression of qSB-9Tq into these cultivars enhanced their resistance level by decreasing sheath blight score of 1.0 (0.5–1.3), which indicated that qSB-9Tq had a large potential in strengthening the resistance of japonica rice to sheath blight. The use of the three molecular markers, which were polymorphic between Teqing and many japonica rice cultivars, promotes the application of qSB-9Tq in a concrete molecular breeding program. | Shimin Zuo Li Zhang Hui Wang Yuejun Yin Yafang Zhang Zongxiang Chen Yuyin Ma Xuebiao Pan | 2008 | Journal of Genetics and Genomics2008，35，8： | 14 |
| 7 | Petrogenesis and tectonic implications of Late-Triassic high εNd(t)-εHf(t) granites in the Ailaoshan tectonic zone(SW China)显示文摘High εNd(t)-εHf(t) granites are robust evidence for crustal growth. In this paper we report results of petrologic, geochronological and geochemical investigations on the Huashiban granites from the Ailaoshan tectonic zone in western Yunnan(SW China). Zircon grains separated from the two samples(10HH-119 A and 10HH-120A) yield the weighted mean 206Pb/238 U ages of 229.9 ± 2.0 Ma and 229.3 ± 2.3 Ma, respectively, interpreted as the crystallization ages of the granites. Based on our results, in combination with the existing U-Pb geochronological data for the Ailaoshan metamorphic rocks, we propose that the Ailaoshan Group might be a rock complex composed of the Mesoproterozoic, Neoproterozoic, Hercynian, Indosinian and Himalayan components, rather than a part of the crystalline basement of the Yangtze block. The zircon grains show highly depleted Lu-Hf isotope compositions, with positive εHf(t) values ranging from 8.4 to 13.1. The Huashiban granites have high SiO2(72.66 wt%–73.70 wt%), low Mg#(0.28–0.34) with A/CNK=1.01–1.05, and can be classified as peralumious high-K calc-alkaline I-type granites. A synthesis of these data indicates that the Ailaoshan tectonic zone had evolved into a post-collisional setting by the Late-Triassic(229 Ma). Genesis of the Huashiban high εNd(t)-εHf(t) granites involved into two processes:(1) underplating of the sub-arc mantle into the lower crust, and(2) remelting of the juvenile crustal materials in response to the upwelling of the asthenospheric mantle in the post-collisional setting. | LIU HuiChuan WANG YueJun FAN WeiMing ZI JianWei CAI YongFeng YANG GuangLin | 2014 | Science China Earth Sciences2014，57，9： | 12 |
| 8 | Assessment of the immune responses to Treponema pallidum Gpd DNA vaccine adjuvanted with IL-2 and chitosan nanoparticles before and after Treponema pallidum challenge in rabbits显示文摘Syphilis is a multistage,sexually transmitted disease caused by the spirochete,Treponema pallidum(Tp).A significantly high incidence of syphilis has been reported in several countries,including China,and there is an urgent need for the development of efficacious vaccines against syphilis.DNA vaccines are a major breakthrough in the field of vaccination with several advantages over traditional vaccines.Animal model studies of Tp DNA vaccines have not been reported elsewhere but our previous reports describe the development of a single-gene Tp DNA vaccine and preclinical immunization study.In this study,chitosan(CS) nanoparticles were used as a vector and an interleukin-2 expression plasmid(pIL-2) as an adjuvant to enhance a TpGpd DNA vaccine candidate(pTpGpd) in a rabbit Tp skin challenge model.At week 8 after the first immunization,three rabbits from each group were used to determine cytokine measurements and spleen lymphocyte proliferation assay.pTpGpd in combination with pIL-2 wrapped with CS led to the greatest enhancement of anti-TpGpd antibodies and T-cell proliferation.During infection,levels of anti-TpGpd antibodies and T-cell proliferation were measured.Both the serum special IgG and IL-2,interferon-γ were significantly increased by the co-injection of the IL-2 plasmid compared with the injection of TpGpd DNA alone(P<0.05).Furthermore,IL-2 plasmid coinjection efficiently enhanced the antigen-specific lymphocyte proliferation response.Additionally,the ratios of positive skin lesions and ulcer lesions in groups immunized with pTpGpd were significantly lower than those of the pIL-2,CS or pIL-2 mixed with CS control groups(P<0.001).CS vectored and pIL-2 adjuvanted pTpGpd immunized animals exhibited the lowest rates of positive skin tests(8.33%) and ulcer lesions(4.17%) and the fastest recovery(42 d).These experiments indicate that co-injection of a pIL-2 plasmid with pTpGpd DNA vaccine wrapped with CS can significantly strengthen the long-term stability of immune response during infection,efficiently improve the protective effect against T.pallidum spirochetes infection and attenuate syphilitic lesion development. | ZHAO FeiJun ZHANG XiaoHong LIU ShuangQuan ZENG TieBing YU Jian GU WeiMing ZHANG YueJun CHEN Xi WU YiMou | 2013 | Science China(Life Sciences)2013，56，2： | 8 |
| 9 | Baculovirus-mediated expression of a Chinese scorpion neurotoxin improves insecticidal efficacy显示文摘An Buthus martensii Karsch Insect Toxin (BmK IT ) gene was inserted into the genome of Autographa californica multicapsid nucleopolyhedrovirus (AcMNPV) to construct a recombinant baculovirus, AcMNPV-BmK IT. The expression of BmK IT was confirmed using RT-PCR, dot blot and SDS-PAGE analysis. Dose-lethal time responses to Spodoptera exigua larvae were compared between wild-type baculovirus AcMNPV and recombinant virus AcMNPV-BmK IT. At the concentration of 1×107 PIBs/mL, the median lethal time of recombinant baculovirus (LT50 = 73.6h) on third instar S. exigua larvae showed an improvement of 13.2% over the efficacy of wild type virus (LT50 = 84.8h) during a 192h in-fection. | FAN XiaoJun ZHENG Bo FU YueJun SUN Yi LIANG AiHua | 2008 | Chinese Science Bulletin2008，53，12： | 7 |
| 10 | Single-cell analysis reveals bronchoalveolar epithelial dysfunction in COVID-19 patients显示文摘Dear Editor,In 2019,a zoonotic coronavirus named severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)was identified as the causative agent of Coronavirus Disease 2019(COVID-19).As of 8 June 2020,the World Health Organization(WHO)has reported 6,912,751 globally confirmed cases with 400,469 deaths.Although generally causes mild disease,SARS-CoV-2 infection can result in serious outcomes,including acute lung injury(ALI)and acute respiratory distress syndrome(ARDS),the leading cause of mortality in patients with comorbidities.Recent autopsy studies of COVID-19 patients revealed mononuclear infiltration and excessive production of mucus in the infected lung,especially in the damaged small airways and alveoli(Bian and Team,2020;Liu et al.,2020). | Jiangping He Shuijiang Cai Huijian Feng Baomei Cai Lihui Lin Yuanbang Mai Yinqiang Fan Airu Zhu Huang Huang Junjie Shi Dingxin Li' Yuanjie Wei Yueping Li Yingying Zhao’ Yuejun Pan He Liu Xiaoneng Mo Xi He Shangtao Cao FengYu Hu Jincun Zhao Jie Wang Nanshan Zhong Xinwen Chen Xilong Deng Jiekai Chen | 2020 | Protein & Cell2020，11，9： | 7 |
| 11 | An individualized immune signature of pretreatment biopsies predicts pathological complete response to neoadjuvant chemoradiotherapy and outcomes in patients with esophageal squamous cell carcinoma显示文摘No clinically available biomarkers can predict pathological complete response(pCR)for esophageal squamous cell carcinomas(ESCCs)with neoadjuvant chemoradiotherapy(nCRT).Considering that antitumor immunity status is an important determinant for nCRT,we performed an integrative analysis of immune-related gene profiles from pretreatment biopsies and constructed the first individualized immune signature for pCR and outcome prediction of ESCCs through a multicenter analysis.During the discovery phase,14 differentially expressed immune-related genes(DEIGs)with greater than a twofold change between pCRs and less than pCRs( | Chaoqi Zhang Guochao Zhang Nan Sun Zhen Zhang Liyan Xue Zhihui Zhang Haijun Yang Yuejun Luo Xiaoli Zheng Yonglei Zhang Yufen Yuan Ruixue Lei Zhaoyang Yang Bo Zheng Le Wang Yun Che Feng Wang Sihui Wang Shugeng Gao Qi Xue Yi Zhang Jie He | 2020 | Signal Transduction and Targeted Therapy2020，5，1： | 7 |
| 12 | Cretaceous Volcanic Events in Southeastern Jilin Province,China:Evidence from Single Zircon U-Pb Ages显示文摘摘要:在东南的吉林省的中生代暴烈的岩石是在东北区域的巨大的中生代暴烈的带的一个重要部件。他们的形成的年龄的学习意义大在东北中国认出中生代暴烈的统治。与在西方的辽宁的稀罕中生代生物区系和广泛的中生代矿化作用的研究一起,很多个研究人员集中了于中生代暴烈的事件。作者用单个锆石 U-Pb 在东南的吉林省学习了白垩纪暴烈的岩石的年龄。在 Tonghua 区域的 Sankeyushu 形成暴烈的岩石是 119.2 妈在的结果表演变老,在 Jiutai 区域的 Yingcheng 形成 113.4 吗?? | CHEN Yuejun SUN Chunlin SUN Yuewu SUN Wei | 2008 | Acta Geologica Sinica(English Edition)2008，82，6： | 7 |
| 13 | Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley显示文摘Situated in the Salawusu River Valley, southeast of China's Mu Us Desert, the MGS2 (Milanggouwan section) portion of the Milanggouwan stratigraphic section records 5.5 sedimentary cycles consisting of alternations between dune sand deposits and fluvial or lacustrine facies. We analyzed the grain-size and CaCO 3 distributions in MGS2, and found that Mz (mean particle diameter) and σ (standard deviation) displayed clear variations in peaks and valleys within different sedimentary facies. The CaCO 3 content averaged 0.4% in the dune sand deposits, 1.43% in the fluvial facies, and 8.82% in the lacustrine facies. Both the grain-size distribution and CaCO 3 contents, which equal the indicators for the alternation among the sedimentary facies, suggest the occurrence of 5.5 cycles. These results suggest that the observed cycles mainly resulted from fluctuations between a cold and dry winter monsoon climate and a warm and humid summer monsoon climate, and that the MGS2 portion experienced at least 5.5 fluctuations between these two extremes. This high-frequency climatic fluctuation indicates a strong influence of millennium-scale variations in the strength of the East Asian winter and summer monsoons in our study area during the Pleniglacial. | FengNian WANG BaoSheng LI JiangLong WANG XiaoHao WEN DongFeng NIU ZhiWen LI YueJun SI YiHua GUO ShuHuan DU | 2012 | Journal of Arid Land2012，4，3： | 7 |
| 14 | Convergence of Compressible Euler-Maxwell Equations to Compressible Euler-Poisson Equations显示文摘在这篇论文,到在经由非相对论的限制的一个花托的可压缩的 Euler 泊松方程的时间依赖者 Euler 马方程的集中被学习。两个系统的光滑的答案的本地存在被为第一顺序 symmetrizable 使用精力估计证明夸张系统。为很好准备的起始的数据,答案的集中被 asymptotic 扩大的分析严厉地认为正当直到任何顺序。作者也为一般起始的数据执行起始的层分析;证明 asymptotic 扩大的集中直到第一份订单。 | Yuejun PENG Shu WANG | 2007 | Chinese Annals of Mathematics,Series B2007，28，5： | 7 |
| 15 | Zircon U-Pb Geochronology of the Cenozoic Granitic Mylonite along the Ailaoshan-Red River Shear Zone:New Constraints on the Timing of the Sinistral Shearing显示文摘The Ailaoshan-Red River(ASRR) shear zone in SW China represents an important discontinuity believed to have accommodated eastward extrusion of the Tibetan Plateau in response to the collision of the Indian and Eurasian plates. The onset timing and duration of the ASRR sinistral strike-slip shearing have been hotly disputed. In this paper we present new zircon LA-ICP-MS U-Pb geochronological data from six syntectonic granitic mylonite and leucosomes samples from the ASRR shear zone. Our data reveal a metamorphic age of ~40 Ma, most likely suggesting the maximum age of the shearing initiation. Rocks showing syn-kinematic signatures yield crystallization ages of 38–22 Ma, with inherited components ranging from 716 to 108 Ma. These results, together with existing geological and geochronological data, indicate that the sinistral shearing along the ASRR zone probably began at 40 Ma, mainly activated at 29–22 Ma and lasted at least to ~22 Ma. Our data suggest a continuous extrusion between the Indochina and South China blocks during ~35–17 Ma. The ASRR sinistral shearing has accommodated large scale eastward displacement of the southeastern Tibetan syntaxis, and is likely responsible for the opening of the South China Sea. | Xiaofei Guo Yuejun Wang Huichuan Liu Jianwei Zi | 2016 | Journal of Earth Science2016，27，3： | 6 |
| 16 | Carboniferous Arc Setting in Central Hainan: Geochronological and Geochemical Evidences on the Andesitic and Dacitic Rocks显示文摘Volcanic rocks in the Bangxi-Chenxing tectonic zone provide important carries for better understanding the Late Paleozoic tectonic evolution in Hainan and its temporal-spatial pattern of the eastern Paleotethyan evolution. This paper presents a set of new geochronological and geochemical data on the andesitic and dacitic rocks along the Bangxi-Chenxing tectonic zone in central Hainan. The representative andesitic and dacitic samples yield similar zircon U-Pb ages of 353±3 and 351±7 Ma, respectively, being of Early Carboniferous origin. These volcanic rocks are characterized by low TiO_2 and high Al_2O_3 contents and are enriched in LILEs and LREEs but depletion in HFSEs, along with negative ε_(Nd)(t) values of-1.4–-4.7 and high ^(87)Sr/^(86)Sr(i) ratios of 0.707 2–0.710 1. Geochemical signatures suggest that the andesitic and dacitic samples might originate from a metasomatized wedge modified by the slab-derived component in a continental arc setting. In combination with the available data, it is proposed for the development of a Carboniferous continental arc in response to the eastern Paleotethyan evolution. The Bangxi-Chenxing tectonic zone might westerly link with the Jinshajiang-Ailaoshan-Song Ma suture zone, constituting an assemblage boundary between the South China and Indochina blocks. | Shubo Li Huiying He Xin Qian Yuejun Wang Aimei Zhang | 2018 | Journal of Earth Science2018，29，2： | 6 |
| 17 | Dexamethasone-loaded ROS-responsive poly(thioketal)nanoparticles suppress inflammation and oxidative stress of acute lung injury显示文摘Acute lung injury(ALI)is associated with excessive inflammatory response,leading to acute respiratory distress syndrome(ARDS)without timely treatment.A fewer effective drugs are available currently to treat the ALI/ARDS.Herein,a therapeutic nanoplatform with reactive oxygen species(ROS)-responsiveness was developed for the regulation of inflammation.Dexamethasone acetate(Dex)was encapsulated into poly(thioketal)polymers to form polymeric nanoparticles(NPs)(PTKNPs@Dex).The NPs were composed of poly(1,4-phenyleneacetonedimethylene thioketal)(PPADT)and polythioketal urethane(PTKU),in which the thioketal bonds could be cleaved by the high level of ROS at the ALI site.The PTKNPs@Dex could accumulate in the pulmonary inflammatory sites and release the encapsulated payloads rapidly,leading to the decreased ROS level,less generation of pro-inflammatory cytokines,and reduced lung injury and mortality of mice.RNA sequencing(RNA-seq)analysis showed that the therapeutic efficacy of the NPs was associated with the modulation of many immune and inflammation-linked pathways.These findings provide a newly developed nanoplatform for the efficient treatment of ALI/ARDS. | Zihe Zhai Wei Ouyang Yuejun Yao Yuqi Zhang Haolan Zhang Feng Xu Changyou Gao | 2022 | Bioactive Materials2022，7，8： | 5 |
| 18 | Solenites (Czekanowskiales) from the Late Mesozoic Jehol Biota of Southeastern Jilin,China and its Paleoclimatic Implications显示文摘Situated at the easternmost area of the Late Mesozoic Jehol Biota, China, abundant fossils, including invertebrates, vertebrates and plants, were collected from the Early Cretaceous Yingzuilazi Formation of the Baishan Basin, southeastern Jilin. The faunal remains from this formation distinctly belong to the Early Cretaceous Lycoptera–Ephemeropsis–Eosestheria assemblage of the Jehol Biota. Based on the gross leaf morphology and epidermal structures, two new species and one indeterminate species of genus Solenites(Czekanowskiales), S. baishanensis sp. nov., S. gracilis sp. nov. and S. sp. are described in this paper. This is the first fossil plant of Czekanowskiales reported from this new fossil locality of the easternmost area of the Late Mesozoic Jehol Biota, China. The new discovery contributes to improve our knowledge for understanding of leaf morphology, epidermal characters and diversity of this genus during the Early Cretaceous time, and extends geologic and geographic distribution of Solenites in northern China and Eurasia. Along with consideration of associated plant and faunal assemblages and sedimentology, we suggest that the regional climate was warm and moderately humid with seasonal temperature and precipitation variations in warm–temperate zone during the Early Cretaceous. | LI Yunfeng SUN Chunlin LI Tao NA Yuling CHEN Yuejun XING Dehe | 2015 | Acta Geologica Sinica(English Edition)2015，89，4： | 5 |
| 19 | Influence of Microstructure Refinement on Strain Strengthening Effect of Cu-Ag Alloy in situ Filamentary Composites显示文摘The Cu-10Ag and Cu-10Ag-RE (RE=Ce, Y) alloys in situ filamentary composites were prepared. The relationships of the ultimate tensile strengths (UTS) and microstructure changes of the composites were studied. With increasing of the true strain η, the sizes of the Ag filaments in the composites reduce according to a negative exponential function of η:d=d0·exp(-0.228η), and the UTS of the composites increase also according to a exponential function of η, σ Cu/Ag=σ 0(Cu)+[k Cu/Agd0 -1/2]exp(η/3), here d0 is a coefficient related to the original size of Ag phase. The strain strengthening follows a two-stage strengthening effect. The strengthening mechanisms are related to changes of microstructure in the deformation process. At the low true strain stage, the strengthening is mainly caused by the working hardening controlled by dislocation increasing; at the high true strain stage, the strengthening is mainly caused by the super-fine Ag filaments and the large coherent interfaces between the Ag filaments and Cu matrix. The trace RE additions and the rapid solidification obviously refine scales of the Ag filament of the composites, and therefore obviously increased the strain strengthening rate. The microstructure refinement of the composites, especially the refinement of Ag filament, is the main reason of the high strain strengthening effect in Cu-Ag alloy in situ filamentary composites. | Ning Yuantao, Zhang Xiaohui, Wu Yuejun(Kunming Institute of Precious Metals, Kunming 650221, Yunnan, China) | 2007 | 工程科学(英文版)2007，5，1： | 5 |
| 20 | Petrochemistry and Tectonic Setting of the Middle Triassic Arc-Like Volcanic Rocks in the Sayabouli Area,NW Laos显示文摘The volcanic rocks from the Sayabouli area in northwestern Laos have been poorly studied. These volcanic rocks are traditionally mapped as the Permian–Early Triassic sequences on the geological map. One basaltic-andesite from the Sayabouli area yields a zircon U-Pb age of 237.7±1.7 Ma, suggesting a Middle Triassic origin. All basalt and basaltic-andesite samples from the Sayabouli area show depletions in HFSEs(e.g., Nb, Ta, Ti) and have high LILE/HFSE ratios, and exhibit the geochemical affinity to the continental arc volcanic rocks and are geochemically similar to the continental arc volcanic rocks from the Phetchabun belt in northeastern Thailand, suggesting a Late Permian–Middle Triassic continental margin in the Sayabouli area of northwestern Laos and Phetchabun area of northeastern Thailand. Our data indicate that the Phetchabun arc volcanic belt through the western Loei sub-belt can be linked to the Sayabouli area in northwestern Laos. | Xin Qian Qinglai Feng Yuejun Wang Wenqiang Yang Chongpan Chonglakmani Denchok Monjai | 2016 | Journal of Earth Science2016，27，3： | 5 |
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