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31篇 您的检索式:作者名="Qiuli Liu"
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1Role of mantle-derived magma in genesis of early Yanshanian granites in the Nanling Range, South China: in situ zircon Hf-O isotopic constraints显示文摘Although a number of petrographic observations and isotopic data suggest that magma mixing is common in genesis of many granite plutons, it is still controversial whether the mantle-derived magmas were involved in granites. We carried out in this study a systematic analysis of in situ zircon Hf-O isotopes for three early Yanshanian intrusions dated at ca. 160 Ma from the Nanling Range of Southeast China. The Qinghu monzonite has very homogeneous zircon Hf-O isotopic compositions, εHf(t) =11.6±0.3 and δ18O=5.4‰±0.3‰. In combination with whole-rock geochemical and Sr-Nd isotopic data, the parental magma of the Qinghu monzonite were likely derived from the partial melting of recently-metasomatized, phlogopite-bearing lithospheric mantle without appreciable crustal contamination. The Lisong and Fogang granites and the mafic microgranular enclaves (MME) within the Lisong granites have a wide range of zircon Hf-O isotopic compositions, with Hf and O isotopes being negatively correlated within each pluton. The Lisong MMEs were crystallized from a mantle-derived magma, similar to the parental magma of the Qinghu monzonite, with small amount of crustal assimilation. The Lisong and Fogang granites were formed by reworking of meta-sedimentary materials by mantle-derived magmas and mixing of the mantle-and sediment-derived melts to varying degrees. It is thus concluded that these two Yanshanian granites in the Nanling Range were formed associated with growth and differentiation of continental crust.LI XianHua LI WuXian WANG XuanCe LI QiuLi LIU Yu TANG GuoQiang 2009Science China Earth Sciences2009,52,9:101
2Qinghu zircon:A working reference for microbeam analysis of U-Pb age and Hf and O isotopes显示文摘Zircon is the most useful mineral for studies in U-Pb geochronology and Hf and O isotope geochemistry.Matrix effect is a major problem of the microbeam techniques such as SIMS and LA-(MC)-ICPMS.Therefore,external standardization using well-characterized natural zircon standards is fundamental for accurate microbeam measurements.While the isotopic geochronology and geochemistry laboratories equipped with microbeam analytical facilities have been increasingly established in China during the past decade,applications of the isotopic microanalysis are still limited due to shortage of available standards.We report here the Qinghu zircon as a potential new working reference for microbeam analysis of zircon U-Pb age and O-Hf isotopes.This zircon was separated from the Qinghu quartz monzonite from the western Nanling Range,Southeast China.It is fairly homogeneous in U-Pb age and Hf and O isotopes in terms of large amounts of mircobeam measurements by LA-MC-ICPMS and SIMS at the scales of 20–60 m.SIMS measurements yield consistent206Pb/238U age within analytical uncertainties with that obtained by ID-TIMS.Precise determinations of O isotopes by IRMS and Hf isotopes by solution MC-ICPMS are in good agreement with the statistical mean of microbeam measurements.We recommend U-Pb age of=159.5±0.2 Ma(2SE),18O=5.4‰±0.2‰(2SD)and176Hf/177Hf=0.283002±0.000004(2SD)as the best reference values for the Qinghu zircon.LI XianHua TANG GuoQiang GONG Bing YANG YueHeng HOU KeJun HU ZhaoChu LI QiuLi LIU Yu LI WuXian 2013Chinese Science Bulletin2013,58,36:60
3Human mesenchymal stromal cells enhance the immunomodulatory function of CD8+CD28- regulatory T cells显示文摘Qiuli Liu Haiqing Zheng Xiaoyong Chen Yanwen Peng Weijun Huang Xiaobo Li Gang Li Wenjie Xia Qiquan Sun an Andy Peng Xiang 2015Cellular & Molecular Immunology2015,12,6:12
4Application of deep learning in ecological resource research:Theories, methods, and challenges显示文摘Ecological resources are an important material foundation for the survival,development,and self-realization of human beings.In-depth and comprehensive research and understanding of ecological resources are beneficial for the sustainable development of human society.Advances in observation technology have improved the ability to acquire long-term,cross-scale,massive,heterogeneous,and multi-source data.Ecological resource research is entering a new era driven by big data.Traditional statistical learning and machine learning algorithms have problems with saturation in dealing with big data.Deep learning is a method for automatically extracting complex high-dimensional nonlinear features,which is increasingly used for scientific and industrial data processing because of its ability to avoid saturation with big data.To promote the application of deep learning in the field of ecological resource research,here,we first introduce the relationship between deep learning theory and research on ecological resources,common tools,and datasets.Second,applications of deep learning in classification and recognition,detection and localization,semantic segmentation,instance segmentation,and graph neural network in typical spatial discrete data are presented through three cases:species classification,crop breeding,and vegetation mapping.Finally,challenges and opportunities for the application of deep learning in ecological resource research in the era of big data are summarized by considering the characteristics of ecological resource data and the development status of deep learning.It is anticipated that the cooperation and training of cross-disciplinary talents may promote the standardization and sharing of ecological resource data,improve the universality and interpretability of algorithms,and enrich applications with the development of hardware.Qinghua GUO Shichao JIN Min LI Qiuli YANG Kexin XU Yuanzhen JU Jing ZHANG Jing XUAN Jin LIU Yanjun SU Qiang XU Yu LIU 2020Science China Earth Sciences2020,63,10:7
5The kinase AKT1 potentiates the suppressive functions of myeloid-derived suppressor cells in inflammation and cancer显示文摘Myeloid-derived suppressor cells(MDSCs)are a group of heterogeneous cells1 that play crucial negative regulatory roles in immune-associated diseases,including infections,2 cancer,3 transplantation4,and autoimmunity.5 We and others have shown that mTOR signaling and its downstream metabolic pathways regulate MDSC recruitment and function in inflammation and autoimmunity.Anna Jia Yuexin Wang Yufei Wang Yan Li Qiuli Yang Yejin Cao Ying He Lin Dong Yingjie Dong Yueru Hou Ruoning Wang Yujing Bi Guangwei Liu 2021Cellular & Molecular Immunology2021,18,4:7
6The chimeric genes in the hybrid lineage of Carassius auratus cuvieri(♀)×Carassius auratus red var.(♂)显示文摘Hybridization can combine the genomes of different strains or species, which leads to changes of genotype and phenotype in the hybrids. In this study, we aimed to investigate the genetic variations of hybrids(WR-F1 and WR-F2) derived from the intraspecific hybridization of white crucian carp(Carassius auratus cuvieri, WCC, ♀) and red crucian carp(Carassius auratus red var., RCC, ♂). Here, we compared the orthologous genes in the liver transcriptomes of hybrids with those of WCC and RCC, and classified the orthologous genes into eight gene patterns within three categories(chimera, mutant, and biparental origin genes).The results revealed 19.04%, 4.17% chimeric genes and 6.90%, 5.05% mutations of orthologous genes in WR-F1 and WR-F2 respectively. Seventeen of twenty-three characterized genes(77%) were confirmed to be the chimeras at the genomic DNA level.The GO classification discovered that some chimeric and mutant genes were related to metabolic process, immune system and developmental process in WR-F1. Our results provide the new evidence that hybridization can combine the parental genomes,leading to changes in the genotype of the resultant hybrids. This is the first report on the formation of chimeric genes from fish intraspecific hybridization, which is potentially interesting from the context of both evolution and the genetic breeding of fish.Qingfeng Liu Yanhua Qi Qiuli Liang Xiujuan Xu Fangzhou Hu Jing Wang Jun Xiao Shi Wang Wuhui Li Min Tao Qinbo Qin Rurong Zhao Zhanzhou Yao Shaojun Liu 2018Science China(Life Sciences)2018,61,9:6
7CD8+CD28-T cells:not only age-related cells but a subset of regulatory T cells显示文摘CD28 serves as a co-stimulator for T-cell activation and survival,and is expressed on all naive T cells in newborns.1 However,as T cells experience antigenmediated activation and differentiation,they gradually lose CD28 expression.2 The age-related increase of CD28−T cells in human peripheral blood means that immune function declines in the elderly.1 Among the populations of CD28-T cells,CD8+CD28-T cells show the greatest age-related increase.1 These cells,which were first described in aged humans,exhibit weak immuneresponsiveness and shortened telomeres and are often considered to exhibit ageassociated replicative senescence.Xiaoyong Chen Qiuli Liu Andy Peng Xiang 2018Cellular & Molecular Immunology2018,15,8:5
8Biocompatible organic dots with aggregation-induced emission for in vitro and in vivo fluorescence imaging显示文摘Fluorescent probes play a key role in modern biomedical research. As compared to inorganic quantum dots (QDs) composed with heavy metal elements, organic dye-based fluorescent nanoparticles have higher biocompatibility and are richer in variety. However, traditional organic fluorophores tend to quench fluorescence upon aggregation, which is known as aggregation-caused quenching (ACQ) effect that hinders the fabrication of highly emissive fluorescent nanoparticles. In this work, we demonstrate the synthesis of organic fluorescent dots with aggregation-induced emission (AIE) in far-red/near-infrared (FA/NIR) region. A conventional ACQ-characteristic fluorescent dye, 3,4:9,10-tetracarboxylic perylene bisimide (PBI), is converted into an AIE fluorogen through attaching two tetraphenylethylene (TPE) moieties. The fluorescent dots with surface folic acid groups are fabricated from PBI derivative (DTPEPBI), showing specific targeting effect to folate receptor-overexpressed cancer cells. In vivo studies also suggest that the folic acid-functionalized AIE dots preferentially accumulate in the tumor site through enhanced permeability and retention (EPR) effect and folate receptor-mediated active targeting effect. The low cyto-toxicity, good FR/NIR contrast and excellent targeting ability in in vitro/in vivo imaging indicate that the AIE dots have great potentials in advanced bioimaging applications.LI Kai DING Dan ZHAO QiuLi SUN JingZhi TANG Ben Zhong LIU Bin 2013Science China Chemistry2013,56,9:5
9Targeted disruption of tyrosinase causes melanin reduction in Carassius auratus cuvieri and its hybrid progeny显示文摘The white crucian carp(Carassius auratus cuvieri,WCC) not only is one of the most economically important fish in Asia,characterized by strong reproductive ability and rapid growth rates,but also represents a good germplasm to produce hybrid progenies with heterosis.Gene knockout technique provides a safe and acceptant way for fish breeding.Achieving gene knockout in WCC and its hybrid progeny will be of great importance for both genetic studies and hybridization breeding.Tyrosinase(TYR) is a key enzyme in melanin synthesis.Depletion of tyr in zebrafish and mice results in mosaic pigmentation or total albinism.Here,we successfully used CRISPR-Cas9 to target tyr in WCC and its hybrid progeny(WR) derived from the cross of WCC(♀) and red crucian carp(Carassius auratus red var.,RCC,♂).The level of TYR protein was significantly reduced in mutant WCC.Both the mutant WCC and the mutant WR showed different degrees of melanin reduction compared with the wild-type sibling control fish,resulting from different mutation efficiency ranging from 60% to 90%.In addition,the transcriptional expression profiles of a series of pivotal pigment synthesis genes,i.e.tyrp1,mitfa,mitfb,dct and sox10,were down-regulated in tyr-CRISPR WCC,which ultimately caused a reduction in melanin synthesis.These results demonstrated that tyr plays a key role in melanin synthesis in WCC and WR,and CRISPR-Cas9 is an effective tool for modifying the genome of economical fish.Furthermore,the tyr-CRISPR models could be valuable in understanding fundamental mechanisms of pigment formation in non-model fish.Qingfeng Liu Yanhua Qi Qiuli Liang Jia Song Junmei Liu Wuhui Li Yuqin Shu Min Tao Chun Zhang Qinbo Qin Jing Wang Shaojun Liu 2019Science China(Life Sciences)2019,62,9:4
10Insights into the origin of purely sediment-derived Himalayan leucogranites:Si-O isotopic constraints显示文摘Granite is the dominant rock type in Earth’s continental crust.The origin of granite can be directly or indirectly related to the fractional crystallization of mantle-derived basaltic melt or the reworking of pre-existing continental or oceanic crust, which contribute to the growth of continental crust. Among the various types of granites, the peraluminous leucogranites in the Himalayan orogen, which are high in SiO_2(>73%) and low in mafic minerals (<5%),Xiaochi Liu Xianhua Li Yu Liu Lei Yang Qiuli Li Fuyuan Wu Huimin Yu Fang Huang 2018Science Bulletin2018,63,19:3
11Inhibition of ROS elevation and damage to mitochondrial function prevents lead-induced neurotoxic effects on structures and functions of AFD neurons in Caenorhabditis elegans显示文摘Here we investigated the possible roles of oxidative stress in the formation of decreased thermotaxis to cultivation temperature in lead(Pb)-exposed nematodes Caenorhabditis elagans.Exposure to Pb at the examined concentrations decreased thermotaxis behaviors,and induced severe deficits in the structural properties of AFD sensory neurons.Meanwhile,Pb exposure caused the induction of severe oxidative damage,reactive oxygen species(ROS) production,and mitochondrial dysfunction in young adults.Moreover,pre-treatment with the antioxidants dimethyl sulfoxide(DMSO),ascorbate and N-acetyl-L-cysteine(NAC),used to inhibit both the ROS elevation and the mitochondrial dysfunction caused by Pb exposure,at the L2-larval stage prevented the induction of oxidative damage and the formation of severe deficits in thermotaxis and structural properties of AFD sensory neurons in Pb-exposed young adults.Therefore,the formation of oxidative stress caused by Pb exposure may be due to both the induction of ROS elevation and damage to mitochondrial function,and oxidative stress may play a key role in inducing the neurotoxic effects on the structures and function of AFD sensory neurons in Pb-exposed nematodes.Qiuli Wu Peidang Liu Yinxia Li Min Du Xiaojuan Xing Dayong Wang 2012Journal of Environmental Sciences2012,24,4:3
12A new method for evaluating the oil mobility based on the relationship between pore structure and state of oil显示文摘An accurate evaluation of the shale oil mobility is crucial to its cost-effective exploitation.This study presents a method to assess shale oil mobility by integrating the pore structure and oil states distributions.First,a set of three discrete organic extracts(EOM-A,B and C)were obtained by sequential extraction.The relationships among the EOMs and the oil states were inferred from the group compositions and fluorescence properties of the produced shale oil(free state).The results showed that EOMs A and B represent free oil in the open and closed pores,respectively,while the EOM-C represents adsorbed oil.Then,NMR T_(1)-T_(2)map is used to determine the T_(2-cutoff)values that indicate the pore size ranges of different oil states.Free oil resides mainly in larger pore space(T_(2)>0.5 ms),while the adsorbed oil in smaller pore space(0.2 ms0.5 and T_(2-cutoff)>1.0 ms suggest that the free oil in connected pores has the highest mobility.This work can provide a reference for evaluating the shale oil potential and prospectivity in other regions.Longhui Bai Bo Liu Xiaofei Fu Qinhong Hu Qiuli Huo Liu Wang Qiming Wang Li FuMehdi Ostadhassan 2023Geoscience Frontiers2023,14,6:2
13Association of oxidative stress with the formation of reproductive toxicity from mercury exposure on hermaphrodite nematode Caenorhabditis elegans 显示文摘WU Qiuli HE Kewen LIU Peidang 2011Environmental Toxicology and Pharmacology2011,32,2:1
14Postnatal development of brain‐derived neurotrophic factor (BDNF) and tyrosine protein kinase B (TrkB) receptor immunoreactivity in multiple brain stem respiratory‐related nuclei of the rat显示文摘Qiuli Liu Margaret T.T. Wong‐Riley 2012J Comp Neurol2012,,1:1
15Chang’e-5 samples reveal two-billion-year-old volcanic activity on the Moon and its source characteristics显示文摘The Chang’e-5 mission returned new lunar samples after the last sample mission of the Moon 44 years ago,and is also the first mission that China has completed the sampling of extraterrestrial bodies.Recently,independent teams from the Institute of Geology,Chinese Academy of Geological Sciences,and the National Astronomical Observatories and the Institute of Geology and Geophysics,Chinese Academy of Sciences reported the first batch of results of Chang’e-5 lunar samples.The basic physical properties of the Chang’e-5 soil are within the range of the Apollo and Luna samples though the Chang’e-5 soil is finer-grained,better sorted,and has a slightly lower true density than the mare basalt previosuly reported.The Pb-Pb dating of U-rich minerals in the Chang’e-5 basalt clasts indicated that they formed at about 2.0 Ga,800 million years younger than the youngest lunar sample recovered previously(2.8 Ga),confirming that lunar volcanic activity can last at least until 2 Ga.In-situ Sr-Nd isotope analyses suggested that the Chang’e-5 basalt originated from a depleted mantle source.The contribution of the KREEP component is less than 5%,which excluded the hypothesis that KREEP-rich sources provide an additional heat source for mantle melting.In addition,water contents and H isotopes of apatite and melt inclusions of the Chang’e-5 basalt suggested that the source region is not rich in water which can lower the melting point.Therefore,the reason why lunar volcanic activity can last so long is still unclear,which is a new direction for future lunar exploration and research.Shoujie LIU Qin ZHOU Qiuli LI Sen HU Wei YANG 2021Science China Earth Sciences2021,64,12:1
16Using a linear stapler for pharyngeal closure in total laryngectomy显示文摘Xinrui Zhang Zhimin Liu Quan Li Xuekui Liu Hao Li Weiwei Liu Qiuli Li Zhuming Guo Zongyuan Zeng 2013European Archives of Oto-Rhino-Laryngology2013,,4:1
17Long-Term Reproducibility of SIMS Zircon U-Pb Geochronology显示文摘Secondary ion mass spectrometry(SIMS) zircon U-Pb dating has been widely used to confine the absolute ages of the magmatic or metamorphic events and to distinguish multiple events.Here,a data set consisting of the zircon standards dating data(~15 000 Ple?ovice and ~8 000 Qinghu items) accumulated for more than 8 years using the CAMECA IMS 1280 HR of the Institute of Geology and Geophysics,Chinese Academy of Sciences(IGGCAS) is compiled to evaluate the long-term external reproducibility.With Ple?ovice zircon as the calibration standard and Qinghu zircon as an unknown sample,the analytical uncertainties for single-spot(n = 7 723) and session analyses(n = 691,with more than 7 single spot analyses in one session) are 2.6% and 0.9%(2 RSD,relative standard deviation),respectively.It means that single-spot U-Pb dating for a standard-level zircon sample could vary 5.2% at 95% confidence level,while the average value(n > 7) for each session may vary 1.8%.Thus,these values should be considered as the minimum uncertainty when comparing single spot and individual session analysis results for multiple dating works on a certain geological event.Wenhao Zhao Qiuli Li Yu Liu Guoqiang Tang Xiaoxiao Ling Jiao Li Xianhua Li 2022Journal of Earth Science2022,33,1:1
18Accessary Minerals SIMS U-Th-Pb Dating for Kimberlite and Lamproite显示文摘Kimberlite and lamproite,the major source of diamonds,are volatile-rich potassic ultramafic rocks that originate from the deep lithospheric mantle.These rocks are important for deciphering the compositionLI Qiuli LI Xianhua WU Fuyuan LIU Yu TANG Guoqiang 2016Acta Geologica Sinica(English Edition)2016,90,S1:1
19Biocompatible organic dots with aggregation-induced emission for in vitro and in vivo fluorescence imaging显示文摘Fluorescent probes play a key role in modern biomedical research.As compared to inorganic quantum dots(QDs)composed with heavy metal elements,organic dye-based fluorescent nanoparticles have higher biocompatibility and are richer in variety.However,traditional organic fluorophores tend to quench fluorescence upon aggregation,which is known as aggregation-caused quenching(ACQ)effect that hinders the fabrication of highly emissive fluorescent nanoparticles.In this work,we demonstrate the synthesis of organic fluorescent dots with aggregation-induced emission(AIE)in far-red/near-infrared(FA/NIR)region.A conventional ACQ-characteristic fluorescent dye,3,4:9,10-tetracarboxylic perylene bisimide(PBI),is converted into an AIE fluorogen through attaching two tetraphenylethylene(TPE)moieties.The fluorescent dots with surface folic acid groups are fabricated from PBI derivative(DTPEPBI),showing specific targeting effect to folate receptor-overexpressed cancer cells.In vivo studies also suggest that the folic acid-functionalized AIE dots preferentially accumulate in the tumor site through enhanced permeability and retention(EPR)effect and folate receptor-mediated active targeting effect.The low cytotoxicity,good FR/NIR contrast and excellent targeting ability in in vitro/in vivo imaging indicate that the AIE dots have great potentials in advanced bioimaging applications.LI Kai DING Dan ZHAO QiuLi SUN JingZhi TANG Ben Zhong LIU Bin 2013中国科学:化学2013,43,9:1
20Crucial role of histone deacetylase SIRT1 in myeloid-derived suppressor cell-mediated reprogramming of CD4^(+) T-cell differentiation显示文摘Myeloid-derived suppressor cells(MDSCs)are heterogeneous,immature myeloid cells that inhibit the immune responses of T cells.1–5 MDSCs play a crucial role in infection,6,7 transplantation,8,9 autoimmune diseases10,11,and tumors12,13 by driving the differentiation of specific T-cell subsets,but the precise regulatory mechanism is still unclear.Recently,our results showed that SIRT1,a histone deacetylase,suppresses the functions of proinflammatory MDSCs and promotes tumor growth.14 However,it remains unclear whether SIRT1 regulates the MDSC-induced differentiation of T cells.Here,we identified the regulatory effects of SIRT1 in CD11b+Gr1+MDSCs on T-cell differentiation.Lin Dong Yujing Bi Anna Jia Qing Yu Yuexin Wang Yufei Wang Qiuli Yang Yejin Cao Ying He Ruichen Liu Yan Li Guangwei Liu 2020Cellular & Molecular Immunology2020,17,7:0
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