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深层古老碳酸盐岩-膏盐岩组合油气成藏特征

石油勘探与开发 2024年第1期51卷 48-61页

作者：石书缘胡素云刘伟王铜山周刚徐安娜黄擎宇徐兆辉郝彬王坤姜华马奎白壮壮中国石油勘探开发研究院北京100083 中国石油西南油气田公司勘探开发研究院成都610041 中国石油勘探开发研究院西北分院兰州730020

通过分析塔里木、四川和鄂尔多斯三大海相盆地埃迪卡拉系—奥陶系,并对比参考东西伯利亚、阿曼和澳大利亚Officer三大国外盆地新元古界—寒武系的地层特征,将碳酸盐岩-膏盐岩组合划分成碳酸盐岩类和膏盐岩类互为夹层型、碳酸盐岩类和膏... 详细信息

通过分析塔里木、四川和鄂尔多斯三大海相盆地埃迪卡拉系—奥陶系,并对比参考东西伯利亚、阿曼和澳大利亚Officer三大国外盆地新元古界—寒武系的地层特征,将碳酸盐岩-膏盐岩组合划分成碳酸盐岩类和膏盐岩类互为夹层型、碳酸盐岩类和膏盐岩类互层型以及碳酸盐岩类、膏盐岩类和碎屑岩类共生型3种类型,明确了碳酸盐岩-膏盐岩组合的概念及内涵。结果表明:(1)碳酸盐岩-膏盐岩组合的油气通常来源于泥页岩和泥质碳酸盐岩两类烃源岩,咸化环境膏盐岩可促进烃源岩生烃。(2)主要发育膏云坪型、颗粒滩和微生物丘型两大类白云岩储集层,准同生期或表生期的大气淡水淋滤是储集层规模发育的主要控制因素,后期埋藏溶蚀作用对储集层有调整和改造作用。(3)碳酸盐岩-膏盐岩组合油气成藏模式可划分为盐下成藏模式、盐上成藏模式和盐间成藏模式3大类8小类模式。塔里木盆地塔中隆起北坡、麦盖提斜坡和玛扎塔格前缘隆起带寒武系、四川盆地东部—南部地区寒武系和鄂尔多斯盆地奥陶系盐间马家沟组四段等为未来的有利勘探领域。

关键词：碳酸盐岩-膏盐岩组合白云岩储集层烃源岩油气成藏四川盆地塔里木盆地鄂尔多斯盆地

川西地区生态系统服务对可持续发展目标的影响

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生态学报 2024年第10期44卷 4203-4216页

作者：左玲丽刘国华赵俊彦李佳佳郑舒元王俊晨苏旭坤云南大学国际河流与生态安全研究院昆明650091 中国科学院生态环境研究中心城市与区域生态国家重点实验室北京100085 中国科学院大学资源与环境学院北京100049

可持续发展目标(Sustainable Development Goals,SDGs)的实现往往会因为生态保护或人类福祉之间可能存在的权衡关系而受到阻碍。将生态系统服务(Ecosystem services,ESs)纳入到可持续发展目标的决策中能够避免各方利益的冲突,促进SDGs... 详细信息

可持续发展目标(Sustainable Development Goals,SDGs)的实现往往会因为生态保护或人类福祉之间可能存在的权衡关系而受到阻碍。将生态系统服务(Ecosystem services,ESs)纳入到可持续发展目标的决策中能够避免各方利益的冲突,促进SDGs的实现。然而,在生态环境脆弱的山区,ESs对SDGs的贡献分析仍然不足。以川西地区为研究区,对2000—2020年11个可持续发展目标进行了量化,利用生态系统服务和权衡的综合评估(Integrated Valuation of Ecosystem Services and Tradeoffs,InVEST)模型和定量指标法估算了碳固存、土壤保持和食物生产三种重要生态系统服务,并使用空间面板数据模型研究ESs对SDGs的影响及其空间溢出效应。结果表明:(1)可持续发展目标水平整体提升,但SDG1(无贫穷)和SDG3(良好健康和人类福祉)表现较差,分值低于5分。从空间上看,与环境相关的SDGs在川西北高原表现更好,与社会经济相关的SDGs在川西东部和川西南山地地区表现更好。(2)川西地区碳固存和食物生产服务呈现线性增长趋势,土壤保持服务呈现波动增长趋势,分别增长了0.23×10~8t、8.93×10~5t和1.23×10~8t。(3)与土壤保持和食物生产相比,碳固存对SDGs表现出更强烈的直接影响和空间溢出效应。其中县域碳固存对本县域和邻近县域的SDG11(可持续城市和社区)和SDG1具有显著的促进作用,对SDG2(零饥饿)呈现显著负向影响。研究结果可为区域联合管理提供科学依据,推动可持续发展目标的实现。

关键词：可持续发展目标生态系统服务空间面板数据模型川西地区

Tectonic paleogeography of Late Sinian and its significances for petroleum exploration in the middle-upper Yangtze region, South china

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Petroleum Exploration and Development 2020年第5期47卷 946-961页

作者： wang Zecheng JIANG Hua CheN Zhiyong liU Jingjiang MA Kui li Wenzheng XIE Wuren JIANG Qingchun ZHAI Xiufen SHI shuyuan li Qi Petrochina Research institute of Petroleum Exploration&Development Beijing 100083China Petrochina Southwest Oil&Gas Field Company Chengdu 610051China Petrochina Hangzhou Research institute of Geology(HIPG) Xihu DistrictHangzhou 310023China

The paleotectonic pattern,lithofacies paleogeographic features,sedimentary evolution and its controlling effects on hydrocarbon accumulation assemblages during the depositional period of the Sinian Dengying Formation in middle-upper Yangtze region were investigated based on outcrops,drilling,log and seismic *** study shows that,(1)Affected by the breakup of the Rodinia supercontinent,the middle and upper Yangtze areas were in extensional tectonic environment during the depositional period of Dengying *** carbonate platform was structurally ***-platform depressions controlled by syndepositional faults developed,forming a tectonic-paleogeographic pattern of"three platforms with two depressions".(2)During the depositional period of the first and second members of the Dengying Formation,rimmed platforms and intra-platform fault depressions developed in upper Yangtze area and isolated platform developed in middle Yangtze area,and there was the Xuanhan-Kaijiang ancient land block in eastern *** depositional period of the third member of the Dengying Formation is the transformation period of tectonic-paleogeographic pattern,when a set of shallow water shelf sediment rich in mud was deposited due to transgression on the background of the eroded terrain formed in EpisodeⅠof Tongwan *** sediment of the fourth member of the Dengying Formation inherited the paleogeographic pattern of the first and second members of the Dengying Formation in general,but the Deyang-Anyue intra-platform fault depression further expanded,and the middle Yangtze platform evolved into two separated platforms.(3)Tectonic-sedimentary differentiation and evolution of carbonate platform in the Sinian gave rise to two types of accumulation assemblages with wide distribution and great exploration potential,which are platform margin and intra-platform.

关键词： tectonic paleogeography structural differentiation intra-platform fault depression rimmed platform microbial mounds and shoals Sinian Dengying Formation Sichuan Basin the middle-upper Yangtze region

A novel CRISPR/Cas9 system with high genomic editing efficiency and recyclable auxotrophic selective marker for multiple-step metabolic rewriting in Pichia pastoris

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Synthetic and Systems Biotechnology 2023年第3期8卷 445-451页

作者： Xiang wang Yi li Zhehao Jin Xiangjian liu Xiang Gao shuyuan Guo Tao Yu Center for Synthetic Biochemistry CAS Key Laboratory of Quantitative Engineering BiologyShenzhen Institute of Synthetic BiologyShenzhen Institutes of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen518055China University of the Chinese Academy of sciences Beijing100049China Center for Materials Synthetic Biology CAS Key Laboratory of Quantitative Engineering Biology of CASShenzhen Institute of Synthetic BiologyShenzhen Institutes of Advanced TechnologyChinese Academic of ScienceShenzhen518055China

The methylotrophic budding yeast Pichia pastoris has been utilized to the production of a variety of heterologous recombinant proteins owing to the strong inducible alcohol oxidase promoter(pAOX1).However,it is difficult to use *** as the chassis cell factory for high-valuable metabolite biosynthesis due to the low homologous recombination(HR)efficiency and the limitation of handy selective markers,especially in the condition of multistep biosynthetic ***,we developed a novel CRISPR/Cas9 system with highly editing efficiencies and recyclable auxotrophic selective marker(HiEE-ReSM)to facilitate cell factory in ***,we improved the HR rates of *** through knocking out the non-homologous-end-joining gene(Δku70)and overexpressing HR-related proteins(RAD52 and RAD59),resulting in higher positive rate compared to the basal strain,achieved 97%.Then,we used the uracil biosynthetic genes PpURA3 as the reverse screening marker,which can improve the recycling efficiency of ***,the HR rate is still 100%in uracil auxotrophic ***,we improved the growth rate of uracil auxotrophic yeast strains by overexpressing the uracil transporter(scFUR4)to increase the uptake of exogenous uracil from ***,we explored the optimal concentration of uracil(90 mg/L)for strain *** the end,the HiEE-ReSM system has been applied for the inositol production(250 mg/L)derived from methanol in *** systems will contribute to *** as an attractive cell factory for the complex compound biosynthesis through multistep metabolic pathway engineering and will be a useful tool to improve one carbon(C1)bio-utilization.

关键词： Pichia pastoris Uracil auxotroph CRISPR/Cas9 Recyclable selective marker Homology directed repair

Quantitative morphometric analysis of a deep-water channel in the Taranaki Basin, New Zealand

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Acta Oceanologica Sinica 2023年第5期42卷 42-56页

作者： Wei Wu Guangxu wang Changsong lin Weiqing liu Quan li Zhendong Feng shuyuan Ning institute of Resources and Environment Henan Polytechnic UniversityJiaozuo 454003China school of Ocean Science China University of GeosciencesBeijing 100083China institute of Exploration technology CNOOC International Ltd.Beijing 100028China College of Safety Science and Engineering Henan Polytechnic UniversityJiaozuo 454003China

The morphological changes of deep-water channels have an important influence on the distributions of channel sand reservoirs,so it is important to explore the morphological change process of deep-water channel for the exploration and development of deep-water oil and *** on a typical sinuous Quaternary channel(Channel I)in the Taranaki Basin,New Zealand,a variety of seismic interpretation techniques were applied to quantitatively characterize the morphological characteristics of the Channel I,and the relationships between the quantitative parameters and the morphological changes of the Channel I,as well as the controlling factors affecting those morphological changes,were *** results are as follows:(1)in the quantitative analysis,six parameters were selected:the channel depth,width,sinuosity,and aspect ratio(width/depth),the channel swing amplitude(λ)and the channel bend frequency(ω);(2)according to the quantitative morphological parameters of the channel(mainly including three parameters such as channel sinuosity,ωandλ),the Channel I was divided into three types:the low-sinuous channel(LSC),the high-sinuous channel(HSC),the moderate-sinuous channel(MSC).U-shaped channel cross-sections developed in the LSC,V-shaped channel cross-sections developed in the HSC,including inclined-V and symmetric-V cross-sections,and dish-shaped channel cross-sections developed in the MSC;(3)the morphological characteristics of the LSC and MSC were related to their widths and depths,while the morphology of the HSC was greatly affected by the channel width,a change in depth did not affect the HSC morphology;(4)the morphological changes of the Channel I were controlled mainly by the slope gradient,the restricted capacity of the channel and the differential in fluid properties.

关键词： Quaternary deep-water channel geometrical morphology quantitative analysis Taranaki Basin New Zealand

Initial analysis for characterizing and mitigating the pseudorange biases of BeiDou navigation satellite system

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Satellite Navigation 2020年第1期1卷 30-39页

作者： Chengyan he Xiaochun Lu Ji Guo Chengeng Su Wei wang Meng wang National Time Service Center Chinese Academy of SciencesNo.3 Shuyuan East RoadLintongXi’an 710600ShaanxiChina State Key Laboratory of Geo-information Engineering Xi’an 710054China beijing institute of Tracking and Telecommunication technology No.26 Beiqing RoadBeijing 100094China

Pseudorange bias has become a practical obstacle in the field of high-precision global navigation satellite system(GNSS)applications,which greatly restricts the further development of high-precision ***,no studies have been conducted on the pseudorange biases of the BeiDou navigation satellite system(BDS).To mitigate the effects of pseudorange biases on the BDS performance to the greatest extent possible,the origin of such BDS pseudorange biases are first thoroughly illustrated,based upon which the dependency of the biases on the receiver configurations are studied in *** to the limitations regarding the parameter re-settings for hardware receivers,software receiver technology was used to achieve the ergodicity of the receiver parameters,such as the correlator spacing and front-end bandwidth,using high-fidelity signal observations collected by a 40-m-high gain dish antenna at Haoping *** on this,the pseudorange biases of the BDS B1I and B3I signals and their dependency on different correlator spacings and front-end bandwidths were adequately ***,herein,the suggested settings of the correlator spacing and front-end bandwidth for BDS receivers are in detail proposed for the first *** a result,the pseudorange biases of the BDS signals will be less than 20 cm,reaching even under 10 cm,under this *** study will provide special attention to GNSS pseudorange biases,and will significantly promote a clear definition of the appropriate receiver parameter settings in the interface control documents of BDS and other individual satellite systems.

关键词： BeiDou navigation satellite system Pseudorange biases Mitigation method Front-end bandwidth Correlator spacing

基于AHP-熵-TOPSIS理论的输电线路灾害风险研究

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微型电脑应用 2024年第8期40卷 68-72,84页

作者：杜维柱张金满张晓华卢毅王书渊沈彦伶国网冀北电力有限公司电力科学研究院北京100045 河北省气象服务中心河北石家庄050021 国网冀北电力有限公司北京100045

为了开展对输电线路的灾害风险评估,提出一种输电线路灾害风险评估方法。利用改进的属性约简算法对选取的指标进行约简,利用层次分析法(AHP)和熵权(EW)法结合的主客观综合评价法计算约简后指标的组合权重,采用逼近理想解排序(TOPSIS)模... 详细信息

为了开展对输电线路的灾害风险评估,提出一种输电线路灾害风险评估方法。利用改进的属性约简算法对选取的指标进行约简,利用层次分析法(AHP)和熵权(EW)法结合的主客观综合评价法计算约简后指标的组合权重,采用逼近理想解排序(TOPSIS)模型对输电线路灾害风险进行评价排序来作为最终评价结果。以实际运行的3条输电线路为例,结果表明该评估模型科学地考虑了影响输电线路运行的各种因素,并对选取指标的重要性进行了综合比较和分析,使评价结果更加准确,可以作为输电线路灾害风险评估的一种方法。

关键词：属性约简风险评估组合权重

Superconductivity of the FeSe/SrTiO3 Interface in View of BCS–BEC Crossover

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Chinese Physics Letters 2019年第10期36卷 81-85页

作者： shuyuan Zhang Guangyao Miao Jiaqi Guan Xiaofeng Xu Bing liu Fang Yang Weihua wang Xuetao Zhu Jiandong Guo beijing National Laboratory for Condensed Matter Physics and institute of Physics Chinese Academy of SciencesBeijing 100190 school of Physical sciences University of Chinese Academy of SciencesBeijing 100049 Songshan Lake Materials Laboratory Dongguan 523808 beijing Academy of Quantum Information sciences Beijing 100193

In paired Fermi systems,strong many-body effects exhibit in the crossover regime between the Bardeen–Cooper–Schrieffer(BCS)and the Bose–Einstein condensation(BEC)*** concept of the BCS–BEC crossover,which is studied intensively in the research field of cold atoms,has been extended to condensed *** by analyzing the typical superconductors within the BCS–BEC phase diagram,we find that FeSe-based superconductors are prone to shift their positions in the BCS–BEC crossover regime by charge doping or substrate substitution,since their Fermi energies and the superconducting gap sizes are *** at the interface of single-layer FeSe on SrTiO3 substrate,the superconductivity is relocated closer to the crossover unitary than other doped FeSe-based materials,indicating that the pairing interaction is effectively *** further show that hole-doping can drive the interfacial system into the phase with possible pre-paired electrons,demonstrating its flexible tunability within the BCS–BEC crossover regime.

关键词： crossover BEC regime

沉积时间对聚醚醚酮表面类金刚石薄膜的结构和性能的影响

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材料研究学报 2022年第11期36卷 801-810页

作者：崔丽孙丽丽郭鹏马鑫王舒远汪爱英中国科学院宁波材料技术与工程研究所、中国科学院海洋新材料与应用技术重点实验室、浙江省海洋材料与防护技术重点实验室宁波315201 中国科学院大学材料与光电研究中心北京100049 西安交通大学机械制造系统工程国家重点实验室西安710049

采用直流磁控溅射技术在聚醚醚酮(PEEK)表面制备不同厚度的类金刚石(DLC)薄膜,研究了沉积时间对其表/界面结构、组分、疏水、力学和光透过性能的影响。结果表明,在平均沉积速率为5.71 nm/min的条件下,随着沉积时间的延长DLC薄膜的厚度... 详细信息

采用直流磁控溅射技术在聚醚醚酮(PEEK)表面制备不同厚度的类金刚石(DLC)薄膜,研究了沉积时间对其表/界面结构、组分、疏水、力学和光透过性能的影响。结果表明,在平均沉积速率为5.71 nm/min的条件下,随着沉积时间的延长DLC薄膜的厚度线性增大、碳原子的致密性提高、界面互锁结构增强,而界面结合强度逐渐降低。沉积时间≤15 min时,基体结构的影响使拟合计算出的I_(D)/I_(G)值为0.23~0.25和sp^(2)/sp^(3)比值较小(0.58~0.74);沉积时间>15 min时基体的影响较小,I_(D)/I_(G)值突增大至0.81,sp^(2)/sp^(3)值也比较大(0.96~1.12)。沉积时间的延长使PEEK基体的温度逐渐升高,使膜内的sp^(2)/sp^(3)值逐渐增大。薄膜表面的氧含量先降低然后趋于平缓,部分C=O转化为C-O。随着沉积时间的延长,PEEK/DLC复合薄膜的硬度、弹性模量及防紫外线和阻隔红外线性能都逐渐提高,其表面粗糙度和疏水性的变化趋势是先提高后降低。沉积时间为32 min的薄膜,其表面粗糙度和水接触角达到最大值,分别为495 nm和108.29°。

关键词：材料表面与界面聚醚醚酮类金刚石薄膜表面改性沉积时间界面结合