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Velocity-porosity relationships in hydrate-bearing sediments measured from pressure cores,Shenhu Area,South China Sea

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China Geology 2022年第2期5卷 267-275页

作者： lin lin Jun Cao Jin Qian Jiu-jing Shang Wei Zhang Jin-gan Lu Jin-qiang Liang Guangzhou Marine Geological Survey China Geological SurveyMinistry of Natural ResourcesGuangzhou 510760China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Institution of Oceanology Chinese Academy of SciencesQingdao 266071China

Evaluating velocity-porosity relationships of hydrate-bearing marine sediments is essential for characterizing natural gas hydrates below seafloor as either a potential energy resource or geohazards risks.Four sites had cored using pressure and non-pressure methods during the gas hydrates drilling project(GMGS4)expedition at Shenhu Area,north slope of the South China Sea.Sediments were cored above,below,and through the gas-hydrate-bearing zone guided with logging-while-drilling analysis results.Gamma density and P-wave velocity were measured in each pressure core before subsampling.Methane hydrates volumes in total 62 samples were calculated from the moles of excess methane collected during depressurization experiments.The concentration of methane hydrates ranged from 0.3%to 32.3%.The concentrations of pore fluid(25.44%to 68.82%)and sediments(23.63%to 54.28%)were calculated from the gamma density.The regression models of P-wave velocity were derived and compared with a global empirical equation derived from shallow,unconsolidated sediments data.The results were close to the global trend when the fluid concentration is larger than the critical porosity.It is concluded that the dominant factor of P-wave velocity in hydrate-bearing marine sediments is the presence of the hydrate.Methane hydrates can reduce the fluid concentration by discharging the pore fluid and occupying the original pore space of sediments after its formation.

关键词： Natural gas hydrates(NGHs) Methane hydrate P-wave velocity Porosity Saturation Pressure-core NGHs exploration trial engineering Oil and gas exploration engineering Shenhu Area South China Sea

Effects of road dust on the growth characteristics of Sophora japonica L.seedlings

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Journal of Environmental Sciences 2016年第8期28卷 147-155页

作者： Le Bao Laiye Qu Keming Ma lin lin State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences University of Chinese Academy of Science

Road dust is one of the most common pollutants and causes a series of negative effects on plant physiology. Dust＇s impacts on plants can be regarded as a combination of load,composition and grain size impacts on plants; however, there is a lack of integrated dust effect studies involving these three aspects. In our study, Sophora japonica seedlings were artificially dusted with road dust collected from the road surface of Beijing so that we could study the impacts of this dust on nitrogen/carbon allocation, biomass allocation and photosynthetic pigments from the three aspects of composition, load and grain size. The results showed that the growth characteristics of S. japonica seedlings were mostly influenced by dust composition and load. Leaf N, root–shoot ratio and chlorophyll a/b were significantly affected by dust composition and load; leaf C/N, shoot biomass, total chlorophyll and carotenoid were significantly affected by dust load; stem N and stem C/N were significantly affected by dust composition; while the dust grain size alone did not affect any of the growth characteristics. Road dust did influence the growth characteristics more extensively than loam. Therefore, a higher dust load could increase the differences between road dust and loam treatments. The elements in dust are well correlated to the shoot N, shoot C/N, and root–shoot ratio of S. japonica seedlings. This knowledge could benefit the management of urban green spaces.

关键词： Dust composition Dust load Dust grain size Nitrogen Biomass

Single-phase multiferroics: new materials, phenomena,and physics

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National Science Review 2019年第4期6卷 653-668页

作者： Chengliang Lu Menghao Wu lin lin Jun-Ming Liu School of Physics &Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Laboratory of Solid State Microstructures Nanjing University Institute for Advanced Materials Hubei Normal University

Multiferroics, where multiple ferroic orders coexist and are intimately coupled, promise novel applications in conceptually new devices on one hand, and on the other hand provide fascinating physics that is distinctly different from the physics of high-TCsuperconductors and colossal magnetoresistance manganites. In this mini-review, we highlight the recent progress of single-phase multiferroics in the exploration of new materials, efficient roadmaps for functionality enhancement, new phenomena beyond magnetoelectric coupling, and underlying novel physics. In the meantime, a slightly more detailed description is given of several multiferroics with ferrimagnetic orders and double-layered perovskite structure and also of recently emerging 2 D multiferroics. Some emergent phenomena such as topological vortex domain structure, non-reciprocal response, and hybrid mechanisms for multiferroicity engineering and magnetoelectric coupling in various types of multiferroics will be briefly reviewed.

关键词： multiferroics magnetoelectric coupling non-reciprocity topological domain structure 2D multiferroics

基于RNA-seq数据分析长牡蛎(Crassostrea gigas)天然免疫的可变剪接事件

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海洋与湖沼 2024年第1期55卷 182-192页

作者：李若晖张琳琳中国科学院海洋研究所实验海洋生物学重点实验室山东青岛266071 青岛海洋科学与技术试点国家实验室海洋生物学与生物技术功能实验室山东青岛266237 中国科学院大学北京100049

大部分无脊椎动物缺乏基于经典抗体和记忆细胞的适应性免疫,因而天然免疫在无脊椎动物免疫防御中发挥不可或缺的作用。可变剪接正是产生天然免疫多样性和特异性的重要途径。牡蛎(Crassostrea)是全球范围内的大宗养殖贝类和我国产量最高... 详细信息

大部分无脊椎动物缺乏基于经典抗体和记忆细胞的适应性免疫,因而天然免疫在无脊椎动物免疫防御中发挥不可或缺的作用。可变剪接正是产生天然免疫多样性和特异性的重要途径。牡蛎(Crassostrea)是全球范围内的大宗养殖贝类和我国产量最高的海水养殖贝类,理解其天然免疫系统的多样性和特异性对牡蛎病害防治和养殖业健康可持续发展至关重要。通过对不同病原诱导以及诱导后不同时间的转录组进行生物信息分析,系统地研究了长牡蛎天然免疫应激反应的可变剪接事件。发现在弧菌诱导下可变剪接事件的总数显著增加,表明弧菌的感染会诱导长牡蛎可变剪接事件的产生。对病原诱导后可变剪接体的组成类型及表达量显著变化的基因的功能富集分析,表明免疫系统相关功能被显著富集,病原感染不同阶段以及不同病原感染后可变剪接体的组成类型和表达量均不一致,表明长牡蛎免疫系统可通过可变剪接产生免疫响应的特异性和多样性。研究结果为长牡蛎等无脊椎动物天然免疫多样性和特异性提供了典型实例,也为长牡蛎病害防御提供了理论支撑。

关键词：长牡蛎可变剪接病原体诱导天然免疫

以义始而以利终?——民初粤省偿还华侨辛亥革命借款案再探

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华侨华人历史研究 2024年第2期 86-96页

作者：赵琳琳中山大学历史学系广东广州510275

论文通过对报刊、档案、回忆录等史料的细致梳理,将偿还华侨革命借款案放置于民初的政治脉络之中,探寻辛亥革命后的革命善后困境,剖析华侨群体与近代中国革命之间复杂多元的动态关系。1913年,胡汉民提出偿还辛亥两役华侨借款,本欲既填... 详细信息

论文通过对报刊、档案、回忆录等史料的细致梳理,将偿还华侨革命借款案放置于民初的政治脉络之中,探寻辛亥革命后的革命善后困境,剖析华侨群体与近代中国革命之间复杂多元的动态关系。1913年,胡汉民提出偿还辛亥两役华侨借款,本欲既填补省库亏空又弥补辛亥年支持革命的华侨,却不料弄巧成拙,引得粤省各界与海外华侨的极力反对。这虽有胡汉民卸任前行事潦草、考虑不周之嫌,但晚清革命以来筹款行动的混乱无序才是其中的难解之结。偿还华侨革命借款案虽在两个月后草草了之,却加深了国民党在海外的负面形象。这一案件对后续革命亦有消极影响,间接导致孙中山与中华革命党难得海外华侨的支持。

关键词：华侨捐款革命借款案胡汉民广东省议会二次革命

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论美国跨境补贴的双轨规制及中国应对

上海对外经贸大学学报 2024年第3期31卷 17-29页

作者：黄琳琳上海立信会计金融学院上海201209

继欧盟出台《外国补贴条例》并频繁对中国发动反补贴调查以来,美国也在不断搭建其跨境补贴的立法框架。从《1930年关税法案》对国际财团补贴和上游补贴的规制扩展到《公平竞争法案2.0》对跨国公司补贴、跨国补贴以及USMCA中对国有企业... 详细信息

继欧盟出台《外国补贴条例》并频繁对中国发动反补贴调查以来,美国也在不断搭建其跨境补贴的立法框架。从《1930年关税法案》对国际财团补贴和上游补贴的规制扩展到《公平竞争法案2.0》对跨国公司补贴、跨国补贴以及USMCA中对国有企业跨境补贴的规制,美国对于跨境补贴的规范已经呈现出了双轨规制的特征,即通过国内规范与国际规范互动的形式,将国内法层面的竞争公平理念和国际法层面的竞争中立理念分别作为立法基础,同时运用国内调查与国际争端解决两种模式来进行救济。相较于欧盟,美国对跨境补贴的规制具有更大的危害性,主要表现在其双轨规制削弱了SCM协定的效力,恶意规避了WTO对“公共机构”的认定标准,阻碍了多边主义的发展,尤其是降低了中国企业走出去的稳定性预期。对于中国而言,应当尽早采取应对措施,理性评估对跨境补贴规制的功能,积极推动跨境补贴合理国际规则的形成,并在国内层面构建合理的补贴框架。

关键词：跨境补贴双轨规制补贴与反补贴非商业援助

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Programming of Regulatory T Cells In Situ for Nerve Regeneration and Long-Term Patency of Vascular Grafts

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Research 2022年第4期2022卷 571-587页

作者： Yanhong Wang Fangchao Xue Yanzhao Li lin lin Yeqin Wang Shanlan Zhao Xingli Zhao Yong Liu Ju Tan Gang Li Haoran Xiao Juan Yan Hao Tian Min Liu Qiao Zhang Zhaojing Ba Lang He Wenyan Zhao Chuhong Zhu Wen Zeng Department of Cll Biology Third Military Army Medical UniversityChongqing 400038China Department of Anatomy National and Regional Engineering Laboratory of Tssue EngineeringState and Local Joint Engineering Laboratory for Vascular ImplantsKey Lab for Biomechanics and Tissue Engineering of ChongqingThird Military Medical UniversityChongqing 400038China State Key Laboratory of Trauma Burn and Combined InjuryChongqingChina Departments of Neurology Southwest HospitalThird Military Medical UniversityChongqingChina

Rapid integration into the host tissue is critical for long-term patency after small diameter tissue engineering vascular grafts(sdTEVGs)transplantation.Neural recognition may be required for host integration and functionalization of the graft.However,immune rejection and inflammation hinder nerve regeneration of sdTEVGs.Here,a CRISPR/dCas9-nanocarrier was used for targeted programming of regulatory T cells(Treg cells)in situ to promote nerve regeneration of sdTEVGs by preventing excessive inflammation.Treg cells and(C-C chemokine receptor)CCR2+macrophage recruitment occurred after transplantation.The nanodelivery system upregulated ten eleven translocation(TET2)in Treg cells in vitro.Reprogrammed Treg cells upregulated anti-inflammatory cytokines and decreased the proportion of CCR2+macrophages.IL-6 concentrations decreased to the levels required for nerve regeneration.Implantation of CRISPR/dCas9 nanodelivery system-modified sdTEVGs in rats resulted in Treg cell editing,control of excessive inflammation,and promoted nerve regeneration.After 3 months,nerve regeneration was similar to that observed in normal blood vessels;good immune homeostasis,consistency of hemodynamics,and matrix regeneration were observed.Neural recognition promotes further integration of the graft into the host,with unobstructed blood vessels without intimal hyperplasia.Our findings provide new insights into vascular implant functionalization by the host.

关键词： inflammation homeostasis graft

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论唐末五代少数民族政权对中华文化的认同

新疆大学学报（哲学社会科学版） 2024年第4期52卷 24-29页

作者：侯琳琳和谈新疆大学中国语言文学学院新疆乌鲁木齐830046

唐末五代易代之际,沙陀与契丹均建立了封建政权,他们在政治上承袭唐代典章制度,沿用中华礼乐文化,接续儒家正统观念;在教育方面,大兴文教,举办学宫或府、州、县学,普及儒家教育,培养了大量人才;在语言文字方面,他们用汉语作为通用语,使... 详细信息

唐末五代易代之际,沙陀与契丹均建立了封建政权,他们在政治上承袭唐代典章制度,沿用中华礼乐文化,接续儒家正统观念;在教育方面,大兴文教,举办学宫或府、州、县学,普及儒家教育,培养了大量人才;在语言文字方面,他们用汉语作为通用语,使用汉语书写官方文书和日常文书,创作诗文,传承并丰富了中华文化,建立了认同中华文化的思想基础。历史事实证明,中华文化是各民族共有的精神家园,是铸牢中华民族共同体意识的根本所在。

关键词：沙陀契丹中华文化认同

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第二届抗日战争与中日关系史研究工作坊综述

抗日战争研究 2024年第2期 144-147页

作者：李军全林林扬州大学马克思主义学院

华中抗日根据地是中国共产党及其武装力量挺进华中敌后,开辟和发展的抗日根据地,大部分处于江苏、安徽、湖北三省,一部分处在河南、浙江、湖南等省,战略位置十分重要,联系着华北和华南抗日根据地。其中,江苏部分主要包括苏南、苏中、苏... 详细信息

华中抗日根据地是中国共产党及其武装力量挺进华中敌后,开辟和发展的抗日根据地,大部分处于江苏、安徽、湖北三省,一部分处在河南、浙江、湖南等省,战略位置十分重要,联系着华北和华南抗日根据地。其中,江苏部分主要包括苏南、苏中、苏北三块抗日根据地,以及淮南和准北两块抗日根据地的一部分,是华中抗日根据地的中心区域,也是中国共产党支援全国抗战的战略要地。为进一步展现中国共产党及其武装力量在华中敌后英勇抗战的历史图景,丰富中国抗日战争史的研究内容,2024年3月29—31日,中国社会科学院中日历史研究中心、中国社会科学院近代史研究所抗日战争史研究室、扬州大学马克思主义学院和《抗日战争研究》编辑部,以“江苏抗日根据地研究”为主题,联合召开第二届抗日战争与中日关系史研究工作坊,来自中国社会科学院近代史研究所、南开大学、南京大学、南京师范大学、南京理工大学、华东师范大学、华中师范大学、河南师范大学、盐城师范学院、扬州大学、江苏省社会科学院历史研究所、安徽省社会科学院历史研究所、《党史研究与教学》编辑部等高等院校和科研机构的30余名资深专家和青年学者出席。

关键词：华中抗日根据地南京理工大学中国抗日战争史中日关系史河南师范大学盐城师范学院中国社会科学院科研机构