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Present-day Upper-crustal Strain Rate Field in Southeastern Tibet and its Geodynamic Implications:Constraints from GPS Measurements with ABIC Method

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 265-275页

作者： YANG Shaohua pan jiawei LI Haibing SHI Yaolin Key Laboratory of Continental Dynamics of Ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China Jiangsu Donghai Continental Deep Hole Crustal Activity National Observation and Research Station DonghaiJiangsu 222300China Key Laboratory of Computational Geodynamics College of Earth and Planetary SciencesUniversity of Chinese Academy of SciencesBeijing 100049China

The Earth’s surface kinematics and deformation are fundamental to understanding crustal *** effective research approach is to estimate regional motion field and deformation fields based on modern geodetic *** the discrete observed velocity field is obtained,the velocity related fields,such as dilatation rate and maximum shear strain rate,can be estimated by applying varied mathematical *** study applied Akaike's Bayesian Information Criterion(ABIC)method to calculate strain rate fields constrained by GPS observations in the southeast Tibetan *** with results derived from other three methods revealed that our ABIC-derived strain rate fields were more *** maximum shear strain rate highlighted the Xianshuihe–Xiaojiang fault system as the main boundary for the outward migration of material in southeastern Tibet,indicating rotation of eastern Tibet material around the eastern Himalaya rather than whole extrusion along a fixed ***,distinct dilatation rate patterns in the northeast and southwest regions of the fault system were *** northeast region,represented by the Longmenshan area,exhibited negative dilatational anomalies;while the southwest region,represented by the Jinsha River area north of 29°N,displayed positive dilatational *** indicates compression in the former and extension in the *** with deep geophysical observations,we believe that the upper and lower crusts of the Jinsha River area north of 29°N are in an entire expanding state,probably caused by the escape-drag effect of *** presence of a large,low-viscosity region south of 29°N may not enable the entire escape of the crust,but instead result in a differential escape of the lower crust faster than the upper crust.

关键词： strain rate differential escape ABIC GPS southeastern Tibet

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A mutation in the promoter of the yellow stripe-like transporter gene in cucumber results in a yellow cotyledon phenotype

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Journal of Integrative Agriculture 2024年第3期23卷 849-862页

作者： jiawei pan Jia Song Rahat Sharif Xuewen Xu Shutong Li Xuehao Chen School of Horticulture and Landscape Architecture Yangzhou UniversityYangzhou 225009China Institute of Vegetables Tianjin Academy of Agricultural SciencesTianjin 300384China

Leaf color mutants in higher plants are considered to be ideal materials for studying the chlorophyll biosynthesis,photosynthesis mechanism and chloroplast ***,we identified a spontaneous mutant,yc412,in cultivated cucumber that exhibited yellow *** yellow-lethal mutant was diagnosed with an abnormal chloroplast ultrastructure,and reduced photosynthetic capacity and pigment *** bulked segregant analysis-based whole-genome sequencing and fine genetic mapping,we narrowed the yellow cotyledons (yc) locus to a 96.8 kb interval on chromosome *** resequencing and molecular cloning,we showed that Csyc is a potential candidate gene,which encodes a yellow stripe-like (YSL) *** T to C mutation in the promoter region of Csyc caused the yellow cotyledon phenotype in *** to YZU027A (WT),the expression of Csyc was significantly downregulated in the cotyledons of *** of Csyc in cucumber via virus-induced gene silencing resulted in chlorotic leaves,mainly by suppressing the chlorophyll ***,a comparative transcriptome analysis revealed that chloroplast-related genes and chlorophyll biosynthesis genes were significantly downregulated in yc412 *** results provide new insights into the molecular function of the YSL transporter in plant chloroplast development and chlorophyll synthesis.

关键词： cucumber yellow-lethal cotyledons chloroplast development yellow stripe-like transporter

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柴达木盆地北缘新生代沉积物再旋回作用研究:以大红沟剖面为例

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中国地质 2024年第2期51卷 606-622页

作者：桑胜萍卢海建叶家灿潘家伟李海兵中国地质科学院地质研究所自然资源部深地动力学重点实验室北京100037 南方海洋科学与工程广东省实验室广东广州511458

【研究目的】近来,越来越多的研究显示沉积物再旋回作用在构造事件反演、沉积物源区识别以及风尘沉积溯源等方面具有重要作用。【研究方法】为了探究柴达木盆地新生代沉积物再旋回作用,本文对柴北缘大红沟剖面的砂岩进行了薄片鉴定、碎... 详细信息

【研究目的】近来,越来越多的研究显示沉积物再旋回作用在构造事件反演、沉积物源区识别以及风尘沉积溯源等方面具有重要作用。【研究方法】为了探究柴达木盆地新生代沉积物再旋回作用,本文对柴北缘大红沟剖面的砂岩进行了薄片鉴定、碎屑颗粒统计和重矿物等分析,以及对泥岩进行了主微量与稀土元素、黏土矿物等分析。【研究结果】大红沟剖面泥岩的主微量元素与稀土元素分别表现出相似的大陆上地壳(UCC)和球粒陨石标准化配分模式,可能表明沉积物已完全混合或发生再旋回作用;砂岩的主要成分为石英以及少量的长石和岩屑,其中岩屑主要由沉积岩屑组成,表明其源区主要为再旋回造山带;剖面上部稳定重矿物的含量和锆石、电气石和金红石(ZTR)指数突然降低,这表明后期可能主要为近源堆积;相反,黏土矿物中易发生分解的绿泥石的含量在剖面上部突然增加,这也表明此时的物源区更近,有更多的绿泥石保存下来。【结论】综合已有的地层沉积相、砂岩薄片以及碎屑锆石U-Pb年龄等资料,认为柴北缘逆冲褶皱带内广泛分布的侏罗系和白垩系沉积岩曾经历过大规模的沉积物再旋回作用,是盆地新生代地层的重要源区之一;近来的碎屑磷灰石裂变径迹分析表明,柴北缘新生代沉积岩在9~7 Ma经历了显著的沉积物再旋回作用;随着逆冲褶皱作用进一步向盆地内部扩展,~3 Ma以后盆地北部的隆起区沉积岩再次经历沉积物再旋回作用,可能成为柴达木盆地第四纪湖泊以及中国黄土高原黄土的重要源区。

关键词：地球化学分析碎屑颗粒统计重矿物分析沉积物再旋回作用大红沟剖面沉积盆地柴达木北缘地质调查工程

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The historical logics and geographical patterns of rural-urban governance in China

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Journal of Geographical Sciences 2022年第7期32卷 1225-1240页

作者： YE Chao pan jiawei LIU Zhimin Key Laboratory of Geographic Information Science(Ministry of Education) School of Geographic SciencesResearch Center for China Administrative DivisionEast China Normal UniversityShanghai 200241China

The advent of a mobile society has led to profound changes in China’s traditional rural-urban pattern and called for new strategies for urban and rural *** on a macro perspective of temporal and spatial evolution,this study analyzes the historical logics of rural-urban governance,explores the geographical patterns of challenges in China’s rural-urban governance,and finally puts forward targeted strategies for rural-urban governance toward integrated and sustainable development in *** the historical perspective,the urban originates from the rural,and the connotation of rural,that is,a regional-scale outlook,rural-urban relations,and sociocultural interaction,forms the traditional approach to rural-urban ***’s rural-urban governance has evolved from antagonism toward *** terms of theoretical development,the turn toward mobility is an important driving factor shaping and promoting the transformation of research focus on rural-urban *** mobility of urban and rural factors has especially in recent decades brought extensive challenges for governance,which are highlighted by the disintegration of the stability of rural and urban structures,growing regional disparities in rural education levels,and serious aging and hollowing crises in rural *** therefore propose that rural-urban governance should give sufficient consideration to the convergence of wider interests;realize social potential through institutional,cultural and spatial restructuring;and attach importance to collaborative development and *** the transfer of rural problems to urban areas should be paid attention to by rural-urban *** research enriches the knowledge regarding the logics and patterns of China’s rural-urban governance from an interdisciplinary *** is also helpful in the promotion of rural-urban integration and sustainable development,especially at a time when the mobility of social factors between rural area

关键词： rural-urban relation urbanization sustainable development mobility regional disparities

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UAV SfM技术在活动构造研究中的应用——以青藏高原西北部龙木错断裂为例

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地质力学学报 2024年第2期30卷 332-347页

作者：江晨轶潘家伟张丽军李海兵孙知明 Marie-Luce Chevalier 刘富财苏强中国地质科学院地质研究所北京100037 自然资源部大陆动力学重点实验室北京100037 江苏东海大陆深孔地壳活动国家野外科学观测研究站江苏连云港222300 自然资源部深地科学与探测技术实验室北京100094 河北水利电力学院水利工程系河北沧州061001 中国地质科学院地质力学研究所北京100081

为探讨搭载与未搭载实时动态差分技术/动态后处理技术(RTK/PPK)模块的无人机平台通过运动恢复结构(SfM)方法处理获得的数字高程模型(DEM)数据质量差异,以及建立不同无人机平台野外数据采集和室内数据处理过程的快速流程,利用大疆经纬M 3... 详细信息

为探讨搭载与未搭载实时动态差分技术/动态后处理技术(RTK/PPK)模块的无人机平台通过运动恢复结构(SfM)方法处理获得的数字高程模型(DEM)数据质量差异,以及建立不同无人机平台野外数据采集和室内数据处理过程的快速流程,利用大疆经纬M 300 RTK无人机(搭载禅思L1激光雷达(LiDAR)和测绘相机)与大疆精灵4 Pro无人机(搭载可见光相机)分别对青藏高原西北部龙木错断裂上1处位错阶地进行了数据采集,获得了该处高分辨率、高精度DEM数据和数字正射影像图(DOM)数据。对比结果显示,M 300 RTK无人机平台L1负载系统获得的LiDAR和SfM地形数据精度接近,两者在约100 m的飞行高度获得的DEM数据在水平和垂直方向的均方差分别为0.135 m、0.111 m和0.201 m、0.180 m;无RTK模块的精灵4 Pro无人机获取的DEM数据虽然绝对精度较差(水平和垂直方向均方差分别为1.707 m和249.280 m),但其反映的相对地形与实际地形接近,经过地面控制点校正后精度可以达到分米级。研究表明,RTK SfM技术克服了使用地面控制点的局限性,为活动构造研究领域微地貌测量提供了更高精度、更高效率的解决方案。当对测区的绝对三维坐标要求不高,仅需相对的地形起伏时,未搭载RTK模块的无人机也能够在无地面控制点约束的情况下满足地貌位错测量基本需求。

关键词：无人机运动恢复结构摄影测量活动构造精度评估龙木错断裂

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Simulated biomass tar removal mechanism by a Quench Coupled with ADsorption Technology(QCADT)

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Chinese Journal of Chemical Engineering 2020年第1期28卷 279-285页

作者： Xiaosong Zhang jiawei pan Liang Wang Hongqi Sun Yuezhao Zhu Haijun Chen Jiangsu Key Laboratory of Process Enhancement and New Energy Equipment Technology Jiangsu Engineering Laboratory of Energy Conservation and Environmental Protection Technologies and Equipment in Process IndustryNanjing 211816China School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China College of Chemistry and Chemical Engineering Nanjing Tech UniversityNanjing 210009China School of Engineering Edith Cowan University270 Joondalup DriveJoondalupWA6027Australia

Tar removal is a bottleneck in the smooth commercialization of biomass gasification technology. Based on introducing adsorption process into Quench Coupled with ABsorption Technology(QCABT) previously proposed by the author’s group, Quench Coupled with ADsorption Technology(QCADT) has been developed to narrow this gap. Additionally, benzene and naphthalene, which are more similar to the real tar for containing aromatic ring structures, were adopted as light and heavy simulated tar, respectively. Also their removal behavior by QCADT was investigated. The results show that the removal mechanism of QCADT is similar to that of QCABT, except for the higher overall tar removal rate due to adsorption effect. Adsorbents with both micro-and narrow mesopores exhibit a better benzene removal performance, while narrow mesopores play dominant roles in naphthalene removal. Penetration adsorption loading of benzene and naphthalene on AC-1 can reach0.38 g·g^-1 and 0.34 g·g^-1, respectively. The sawdust hardly has any tar removal effect. Combined micro-and meso-pores, will benefit both deep tar removal and large adsorption rate, providing a high tar removal efficiency.

关键词： Biomass gasification Tar removal Adsorption Couple Pore

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旋转振荡板的尾流脱落模式

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Acta Mechanica Sinica 2022年第5期38卷 42-60,I0002页

作者：严亮亮潘家炜邵传平 Institute of Flow Measurement and Simulation China Jiliang UniversityHangzhou 310018China

在风洞中采用烟线流动显示和热线测量方法对弦厚比B/H=3.0的二维旋转振荡矩形板尾流进行了实验研究,研究的雷诺数Re=1500,振幅范围和折算频率范围分别为α=2.5°~50°和f_(e)H/V_(∞)=0.02~0.25,其中f_(e)为振频,V_(∞)为来流速度.发现... 详细信息

在风洞中采用烟线流动显示和热线测量方法对弦厚比B/H=3.0的二维旋转振荡矩形板尾流进行了实验研究,研究的雷诺数Re=1500,振幅范围和折算频率范围分别为α=2.5°~50°和f_(e)H/V_(∞)=0.02~0.25,其中f_(e)为振频,V_(∞)为来流速度.发现了6种同步旋涡脱落模式,其中包括3种新的模式:3P模式,一个振荡周期内有三对转向相反的旋涡脱落;2S_(2)模式,一个周期内每侧各有一个同向涡对脱落;T模式,一个周期内有三个涡脱落.找出了每个旋涡模式的存在区域,并在振频-振幅平面上画出了模式区域图.进行了数值模拟,一些典型状态下所模拟的涡量场、速度剖面和尾流宽度,均与实验结果对比而得到了验证.当振频较高时,惯性力中线性的当地非定常项起决定作用,模拟的扭转力矩是板旋转位移和旋转角速度的线性函数.然而当振频较低时,在不同振幅下分别存在2T、3P和2S2模式旋涡脱落,惯性力中的非线性对流项起主要作用,模拟的脉动力矩偏离Scanlan公式.数值模拟数据的统计结果显示,脉动力矩均方根值是单参数η=αf_(e)H/V_(∞)的指数函数.

关键词： Rotary oscillation Vortex shedding Mode Lift Moment

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Unique double-layer solid electrolyte interphase formed with fluorinated ether-based electrolytes for high-voltage lithium metal batteries

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Journal of Energy Chemistry 2024年第1期88卷 532-542,I0012页

作者： Ruo Wang jiawei Li Bing Han Qingrong Wang Ruohong Ke Tong Zhang Xiaohu Ao Guangzhao Zhang Zhongbo Liu Yunxian Qian Fangfang pan Iseult Lynch Jun Wang Yonghong Deng Department of Materials Science&Engineering School of Innovation and EntrepreneurshipSouthern University of Science and TechnologyShenzhen 518055GuangdongChina School of Geography Earth and Environmental SciencesUniversity of BirminghamEdgbastonBirmingham B152TTUK Key Laboratory of Marine Environmental Corrosion and Bio-Fouling Institute of OceanologyChinese Academy of SciencesQingdao 266071ShandongChina Shenzhen CAPCHEM Technology Co. Ltd.Shenzhen 518118GuangdongChina CALB Group Co. Ltd.Changzhou 213200JiangsuChina

Li metal batteries using high-voltage layered oxides cathodes are of particular interest due to their high energy ***,they suffer from short lifespan and extreme safety concerns,which are attributed to the degradation of layered oxides and the decomposition of electrolyte at high voltage,as well as the high reactivity of metallic *** key is the development of stable electrolytes against both highvoltage cathodes and Li with the formation of robust interphase films on the ***,we report a highly fluorinated ether,1,1,1-trifluoro-2-[(2,2,2-trifluoroethoxy)methoxy]ethane(TTME),as a cosolvent,which not only functions as a diluent forming a localized high concentration electrolyte(LHCE),but also participates in the construction of the inner solvation *** TTME-based electrolyte is stable itself at high voltage and induces the formation of a unique double-layer solid electrolyte interphase(SEI)film,which is embodied as one layer rich in crystalline structural components for enhanced mechanical strength and another amorphous layer with a higher concentration of organic components for enhanced *** Li||Cu cells display a noticeably high Coulombic efficiency of 99.28%after 300 cycles and Li symmetric cells maintain stable cycling more than 3200 h at 0.5 mA/cm^(2) and 1.0m Ah/cm^(2).In addition,lithium metal cells using LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2) and Li CoO_(2) cathodes(both loadings~3.0 m Ah/cm^(2))realize capacity retentions of>85%over 240 cycles with a charge cut-off voltage of 4.4 V and 90%for 170 cycles with a charge cut-off voltage of 4.5 V,*** study offers a bifunctional ether-based electrolyte solvent beneficial for high-voltage Li metal batteries.

关键词： Lithium metal batteries High-voltage layered oxides Fluorinated ether-based electrolytes Solid electrolyte interphase Cathode electrolyte interphase

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Preparation of Manganese Oxide and Its Adsorption Properties

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Journal of Wuhan University of Technology(Materials Science) 2024年第4期39卷 1031-1040页

作者：贺跃王海峰 YANG pan WANG Song CHEN Xiaoliang YANG Chunyuan 王家伟 School of Materials and Metallurgy Guizhou UniversityGuiyang 550025China Guizhou Provincial Engineering Technology Research Center of Manganese Materials for Batteries Tongren Guizhou 554300China Guizhou Provincial Key Laboratory of Metallurgical Engineering and Energy Saving Guiyang 550025China

The in-situ oxidation of manganese sulfate solution with H2O_(2),sodium hypochlorite,potassium permanganate and oxygen as oxidants was investigated by means of SEM,EDS,XRD,BET and infrared analysis,and the effects of different oxidants on the morphology,phase composition,surface properties and specific surface area of manganese oxides were *** experimental results show that the diameter of manganese oxide particles prepared with H_(2)O_(2)is the smallest,about 50 nm,and the specific surface area is the largest,63.8764 m^(2)/*** has the advantages of abundant surface hydroxyl groups,no introduction of other impurities and large adsorption *** is most suitable to be used as an oxidant for oxidizing manganese sulfate solution to prepare manganese oxide by in-situ *** manganese oxide prepard by H_(2)O_(2)in-situ oxidation method is used as adsorbent to adsorb cobalt and nickel impurities in manganese *** the reaction pH is 6,the reaction time is 30min and the amount of adsorbent is 1.0 g,the adsorption rates of cobalt and nickel impurities in 100ml manganese sulfate solution are 97.59%and 97.67%,*** residual amounts of cobalt and nickel meet the industrial process standard of first-class products(Co,Ni w/%≤0.005)of high-purity manganese sulfate(Hg/t4823-2015)for *** study plays a guiding role in the preparation and regulation of manganese oxide,and provides a new method with high efficiency,purity and adsorbent availability for the preparation of high-purity manganese sulfate solution.

关键词： manganese oxide in situ oxidation adsorbent regulation mechanism physical chemical properties

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珞珈三号01星冰雪/云场景影像偏色校正处理

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武汉大学学报（信息科学版） 2024年第6期49卷 923-934页

作者：林加伟潘俊武汉大学测绘遥感信息工程国家重点实验室湖北武汉430079

珞珈三号01星采用Bayer成像模式,其获取的绿色通道信号相对较强,但由于相机通常采用固定的曝光与增益设置,导致珞珈三号01星拍摄的含冰雪/云覆盖影像会出现严重偏绿现象。针对该问题,提出了一种结合颜色通道补偿与直方图间互相关关系的... 详细信息

珞珈三号01星采用Bayer成像模式,其获取的绿色通道信号相对较强,但由于相机通常采用固定的曝光与增益设置,导致珞珈三号01星拍摄的含冰雪/云覆盖影像会出现严重偏绿现象。针对该问题,提出了一种结合颜色通道补偿与直方图间互相关关系的直方图重叠白平衡方法。为提升影像的细节信息,通过低灰度值区域的分布比例构建伽马函数,实现拉伸处理;为提升各颜色通道分布的相似度,使用影像的标准差信息计算权重,补偿衰减通道,并基于YCbCr颜色空间保持亮度信息,避免影像背景亮度变化;为改善偏色情况并保持色度均值的重合,通过互相关关系进行色度直方图重叠处理,根据冰雪/云场景影像的特征自适应调整参数。对校正后的结果影像进行主观分析与客观评价,并与多种主流的颜色校正方法进行对比验证。实验结果表明,所提方法颜色校正效果更好、影像地物颜色更自然,且能更好地保留地物信息。

关键词：珞珈三号01星含冰雪/云覆盖偏色校正自适应伽马校正色度直方图重叠白平衡

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