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Cryogenian and Ediacaran integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 919-949页

作者： lang sun Malik Muhammad Saud Sajid KHAN Chuan YANG Zhixin sun Bing PAN Shehryar AHMED Lanyun MIAO Weichen sun Chunlin HU Xiaojuan sun Cui LUO Bo CHEN Zongjun YIN Fangchen ZHAO Guoxiang LI Maoyan ZHU State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The complex evolutionary history of the Qinghai-Tibetan Plateau and its surrounding areas,including the continental blocks(Indian,Lhasa,South Qiangtang,Tarim,Olongbuluk,Central Qilian,Alxa,North China,Yangtze,Central Iran and Oman)and the orogenic belts between them,has long been the frontier in Earth science *** Cryogenian and Ediacaran strata are extensively distributed in these ***,relatively complete Cryogenian and Ediacaran successions have been discovered in Oman,Indian,Yangtze,and Tarim blocks,while only the Ediacaran successions have been reported in Iran,the South Qiangtang,Central Qilian,Alxa,and North China *** on previous studies together with the integration of new materials and advancement obtained through the Second Tibetan Plateau Scientific Expedition and Research,this review aims to synthesize a correlative stratigraphic framework of the representative Cryogenian and Ediacaran sequences from the Qinghai-Tibetan Plateau and its surrounding ***,the Cryogenian and Ediacaran biotas and major geological events in these areas are comprehensively discussed in aspects of current research *** results indicate that,in general,Ediacaran fossils of each area exhibit distinct features in preservation and assemblage composition,but the typical late Ediacaran fossils Cloudina and Shaanxilithes have been reported from most of these *** addition to the two global Cryogenian glaciations,late Ediacaran glaciogenic deposits are extensively recorded in the areas within and around the northern QinghaiTibetan Plateau(including the North China,Alxa,Central Qilian,Olongbuluk,and Tarim blocks,and the North Qilian Accretionary Belt),as well as central and southern ***,further research is required to determine the age,distribution,and origin of these late Ediacaran glaciogenic ***,the middle Ediacaran DOUNCE/Shuram Excursion is widely documented in the Qinghai-Tibetan Plateau and its surroundi

关键词： Qinghai-Tibetan Plateau Cryogenian Ediacaran Stratigraphy Palaeogeography Biota Gondwana

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Cambrian integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 950-970页

作者： Zhixin sun lang sun Fangchen ZHAO Bing PAN Malik Muhammad Saud Sajid KHAN Shehryar AHMED Chuan YANG Lanyun MIAO Zongjun YIN Guoxiang LI Maoyan ZHU State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The Qinghai-Tibetan Plateau and its surrounding areas have a long and complex tectonic evolutionary *** and blocks,such as northern India,Lhasa,Qiangtang,Qaidam and Central Qilian,and their in-between orogenic belts constitute the main part of the Qinghai-Tibetan *** the Cambrian Period,most of these cratons and blocks were on the northwestern periphery of Gondwana,and were associated with the surrounding blocks,***,Central Iran,Afghanistan,Tarim,Alxa,North China,South China and Sibumasu through the Proto-Tethys *** Cambrian stratigraphic sequences on these stable blocks are composed of mixed siliciclastic and carbonate rocks deposited in the shallow-water marine environments,and contain the trilobite assemblages of shelf *** Cambrian stratigraphic sequences in the Qilian tectonic belts,however,are characterized by the intermediate-basic igneous rocks and silicates formed in the Proto-Tethys Ocean,and contain the trilobite assemblages of deep-water slope *** with previous data,field observations and newly discovered fossils through funding by the Second Tibetan Plateau Scientific Expedition and Research,the general characteristics of the Cambrian strata in different tectonic units of the Qinghai-Tibetan Plateau and its surrounding areas have been summarized in this ***,efforts have been made to subdivide and correlate the Cambrian strata across these areas by utilizing available biostratigraphic and geochronological *** a result,a comprehensive litho-and biostratigraphy chart has been ***,from the biogeographic perspective,this paper also provides a brief overview of the Cambrian paleogeographical reconstruction of the major tectonic blocks,and discusses the problems associated with the evolution of the ProtoTethys tectonic belt.

关键词： Qinghai-Tibetan Plateau Cambrian Stratigraphy Paleogeography Biota Gondwana Proto-Tethys Ocean

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Coupling of BiOCl Ultrathin Nanosheets with Carbon Quantum Dots for Enhanced Photocatalytic Performance

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Transactions of Tianjin University 2024年第3期30卷 211-220页

作者： Pin Song Xiaoyu Fang Wei Jiang Yuyang Cao Daobin Liu Shiqiang Wei Jun Du lang sun Lei Zhao Song Liu Yuzhu Zhou Jun Di Chade Lv Bijun Tang Jiefu Yang Tingting Kong Yujie Xiong Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Engineering Research Center of Carbon NeutralityCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241000China National Synchrotron Radiation Laboratory CAS Center for Excellence in NanoscienceSchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230029China School of Chemistry and Chemical Engineering National Special Superfi ne Powder Engineering Research CenterNanjing University of Science and TechnologyNanjing 210094China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China School of Materials Science&Engineering Nanyang Technological UniversitySingapore 639798Singapore

Over the past few decades,photocatalysis technology has received extensive attention because of its potential to mitigate or solve energy and environmental pollution *** novel materials with outstanding photocatalytic activities has become a research hotspot in this *** this study,we prepared a series of photocatalysts in which BiOCl nanosheets were modified with carbon quantum dots(CQDs)to form CQDs/BiOCl composites by using a simple solvothermal *** photocatalytic performance of the resulting CQDs/BiOCl composite photocatalysts was assessed by rhodamine B and tetracycline degradation under visible-light *** with bare BiOCl,the photocatalytic activity of the CQDs/BiOCl composites was significantly enhanced,and the 5 wt%CQDs/BiOCl composite exhibited the highest photocatalytic activity with a degradation efficiency of 94.5%after 30 min of ***,photocatalytic N_(2)reduction performance was significantly improved after introducing *** 5 wt%CQDs/BiOCl composite displayed the highest photocatalytic N_(2)reduction performance to yield NH_3(346.25μmol/(g h)),which is significantly higher than those of 3 wt%CQDs/BiOCl(256.04μmol/(g h)),7 wt%CQDs/BiOCl(254.07μmol/(g h)),and bare BiOCl(240.19μmol/(g h)).Our systematic characterizations revealed that the key role of CQDs in improving photocatalytic performance is due to their increased light harvesting capacity,remarkable electron transfer ability,and higher photocatalytic activity sites.

关键词： Carbon quantum dots BiOCl Rhodamine B Tetracycline Photocatalysis

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煤矸石精确产酸潜力评价方法对比研究

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矿业科学学报 2024年第1期9卷 13-21页

作者：孙红福阴祥诚孙朗赵峰华朱孟浩范紫仪中国矿业大学(北京)地球科学与测绘工程学院北京100083

为有效避免重大酸性水污染事故,需提高矿山岩石产酸潜力评价的精度。通过全面阐述矸石中常见含硫矿物的产酸潜力计算方法,采用三步连续提取法测定了多个矿石和煤矸石中产酸矿物的硫含量,对比分析了精确产酸潜力和最大产酸潜力。结果表明... 详细信息

为有效避免重大酸性水污染事故,需提高矿山岩石产酸潜力评价的精度。通过全面阐述矸石中常见含硫矿物的产酸潜力计算方法,采用三步连续提取法测定了多个矿石和煤矸石中产酸矿物的硫含量,对比分析了精确产酸潜力和最大产酸潜力。结果表明:煤矸石的产酸潜力值取决于各产酸硫的质量分数和单位硫产酸值;对大部分样品,用产酸硫含量计算的产酸潜力值不同程度地低于用全硫预测的产酸潜力值;样品SC中的硫成分主要为砷黄铁矿硫,相比黄铁矿的单位硫产酸值更高,导致SC样品计算的精确产酸潜力相比全硫预测的产酸潜力更高;三步连续提取法适用于以铁和铜的硫化物为主要含硫矿物的煤矸石;当矿石中其他硫化物成分增多和空白样品混合不均匀都会对结果产生一定干扰。研究结果为准确评价矿区煤矸石精确产酸潜力提供了依据。

关键词：产酸潜力含硫矿物煤矸石三步连续提取法酸性水预测

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An ultra-sensitive metasurface biosensor for instant cancer detection based on terahertz spectra

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Nano Research 2023年第5期16卷 7304-7311页

作者： Peiliang Wang Jing Lou Yun Yu lang sun Lan sun Guangyou Fang Chao Chang Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China Innovation Laboratory of Terahertz Biophysics National Innovation Institute of Defense TechnologyBeijing 100071China The Key Laboratory of Electromagnetic Radiation and Sensing Technology Chinese Academy of SciencesBeijing 100190China School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Air and Missile Defense College Air Force Engineering UniversityXi’an 710051China Institute of Acupuncture and Moxibustion China Academy of Chinese Medical SciencesBeijing 100007China School of Psychological and Cognitive Sciences Beijing Key Laboratory of Behavior and Mental HealthPeking UniversityBeijing 100871China School of Life Science and Technology Xi’an Jiaotong UniversityXi’an 710049China

Metasurface biosensors have become the core label-free and rapid-detection technology in *** cancer and brain cancer are the first leading causes of cancer death among adults and adolescents,respectively,where poor early diagnosis results from expensive detection costs and time *** tackle the above problems,here,we introduce a terahertzdomain metasurface biosensor for cancer diagnosis,relying on a perfectly symmetrical periodic surface structure,which significantly exhibits polarization-insensitivity at 2.05 THz and the high-sensitivity of 504 GHz/RIU(RIU=refractive index unit).According to the frequency shifts and transmittance variations,four cell types are successfully distinguished from each *** minimum number of cells is required for thousands of cells to display the differences of spectra,which is 1/30 of clinical ***,the results were consistent with pathological results(the gold standard in clinic)by Gaussian curve *** proposed biosensor has really achieved the characterization of cells in normal and cancerous *** detection strategy dramatically reduced the cost of detection by reuse and time consumption was reduced to 1/20 of the pathology *** addition,it is flexible to set samples and easy to realize automatic operation due to the great polarization-insensitivity of the proposed biosensor,which can further reduce labor costs in the *** is envisioned that the proposed biosensor will present immense potential in the fields of cancer detection,distinguishing different cancers,identifying primary lesion cancer or metastatic cancer.

关键词： terahertz metasurface biosensor cancer detection

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Resonance and Antiresonance in Electronic Transport Process Through a T-Shaped Quantum Waveguide

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Communications in Theoretical Physics 2008年第4期49卷 1039-1044页

作者： GAO Wen-Zhu ZHENG Yi-Song GONG Wei-Jiang sun lang Department of Physics Jilin University Changchun 130023 China

By means of the transfer matrix approach, the linear conductance spectrum for electronic transport through a T-shaped quantum waveguide is calculated. The resonant peaks and the antiresonant dips in the conductance spectrum are mainly focused. The previous prediction about their positions by other theoretical approaches is checked. In addition, a function of spin filtering is suggested based on the interplay of the resonance and antiresonance in this T-shaped quantum waveguide.

关键词： transfer matrix method linear conductance spectrum electronic transport quantum waveguide

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泵车臂架油缸护套疲劳强度计算与分析

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液压气动与密封 2024年第1期44卷 93-97页

作者：郭彦斌陈希孙朗朗马军杰张强邓乃川徐州徐工液压件有限公司江苏徐州221004

臂架油缸作为泵车臂架机构的执行元件,承受臂架带来的交变载荷,由于泵车工作的特殊性,对油缸的安全性要求非常高。以具体产品为例,对泵车臂架油缸脆弱点进行疲劳强度理论计算,并用有限元分析对结果进行验证,形成理论计算方法,为类似产... 详细信息

臂架油缸作为泵车臂架机构的执行元件,承受臂架带来的交变载荷,由于泵车工作的特殊性,对油缸的安全性要求非常高。以具体产品为例,对泵车臂架油缸脆弱点进行疲劳强度理论计算,并用有限元分析对结果进行验证,形成理论计算方法,为类似产品的疲劳强度计算提供参考,提高分析计算的效率。

关键词：泵车臂架油缸护套疲劳强度

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Targeted drug approvals in 2023:breakthroughs by the FDA and NMPA

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Signal Transduction and Targeted Therapy 2024年第3期9卷 813-821页

作者： lang Zheng Wenjing Wang Qiu sun Department of Biotherapy Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China West China Medical Publishers West China HospitalSichuan UniversityChengdu 610041China

According to the official website of China’s National Medicines and Pharmaceutical Administration(NMPA),a total of 87 novel drugs were approved in China in 2023,with targeted drugs accounting for 67.8%of the total,amounting to 59 drugs(Fig.1a;Table 1)[https://***/yaopin/ypjgdt/***].Notably,domestic innovation is flourishing,with five first-in-class drugs,including Glumetinib,a c-Met inhibitor from Haihe Biopharma;Leritrelvir,a 3CL protease inhibitor from Raynovent;Anaprazole,a proton pump inhibitor from Xuanzhu Biopharm;Pegol-Sihematide,an EPO drug from Hansoh Pharma;and Zuberitamab from BioRay Biopharmaceutical Co.,***,the world’s first allosteric inhibitor targeting TYK2,Sotyktu(deucravacitinib),has been approved for the treatment of psoriasis and Selumetinib,a MEK inhibitor co-developed by AstraZeneca and Merck Sharp&Dohme(MSD),became the first approved drug in China for the treatment of neurofibromatosis type I(NF1).Beyond these drugs,the approval of novel drug types such as CAR-T cell products,siRNA,monoclonal antibodies,dual antibodies,and ADCs in China is a significant development in the country’s pharmaceutical industry(Fig.1a).

关键词： drugs Merck approval

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Stress Concentration Effect in Interface Between Conductor and Epoxy Resin in Coaxial Components of Power Equipment

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 412-420页

作者： Chuang Wang Kang Lei Qing sun Hui Li Jiawei Zhang lang Zhao Zongren Peng School of Electrical Engineering Xi’an University of TechnologyXi’an 710054China Xi’an Power Supply Company State Grid Shaanxi Electric Power CompanyXi’an 710032China State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong UniversityXi’an 710049China

The spacer used in gas insulated switchgear(GIS)plays a vital role in its safe *** mismatch of mechanical properties between conductor and insulating material in spacers results in stress concentration at the interface between *** a hydrostatic test,mechanical damages are often initiated from the *** this paper,the stress between aluminum conductors and epoxy resin is studied by using a simplified coaxial structure *** measurement system and finite element simulation are used to explore the generation of stress and strain during curing and *** real-time measurement of strain at the interface shows that the residual strain in the entire process is primarily generated during the cooling ***,the temperature and stress/strain distribution at the interface during the cooling stage are further studied,and combined with experiments and *** consistency between the finite element simulation and the experimental measurement results verifies the validity of the simulation method *** results show that the maximum of the first principal stress generated during the cooling stage of the production process is concentrated on the upper and lower edges of the interface which is critical to the impact of the production quality of the spacer.

关键词： Epoxy resin GIS interface stress/strain distribution

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基于CRISPR/Cas9技术构建鲍曼不动杆菌lpxC缺失株及其表型研究

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药学学报 2024年第5期59卷 1286-1294页

作者：孙宗倜张友文李海滨王秀坤于洁解晋茹庞蓬勃胡辛欣聂彤颖卢曦庞晶侯磊杨信怡李聪然孙琅游雪甫中国医学科学院、北京协和医学院医药生物技术研究所抗感染药物研究北京市重点实验室北京100050 中国医学科学院病原微生物菌(毒)种保藏中心药用微生物相关菌(毒)种保藏分中心北京100050 中国医学科学院、北京协和医学院医药生物技术研究所实验动物中心北京100050

脂多糖(lipopolysaccharides,LPS)是革兰阴性菌细胞膜外膜重要组成成分,与多数革兰阴性菌不同,鲍曼不动杆菌在LPS缺失后仍可存活并获得对多黏菌素的耐药性。有关LPS缺失鲍曼不动杆菌的研究多是针对多黏菌素诱导产生的LPS缺失株,背景复... 详细信息

脂多糖(lipopolysaccharides,LPS)是革兰阴性菌细胞膜外膜重要组成成分,与多数革兰阴性菌不同,鲍曼不动杆菌在LPS缺失后仍可存活并获得对多黏菌素的耐药性。有关LPS缺失鲍曼不动杆菌的研究多是针对多黏菌素诱导产生的LPS缺失株,背景复杂且不稳定。为深入研究LPS缺失介导的多黏菌素耐药鲍曼不动杆菌,本研究通过双质粒CRISPR/Cas9系统敲除鲍曼不动杆菌ATCC 19606的lpxC基因,构建稳定且背景清晰的LPS缺失株,并对缺失株的形态、生长速率、抗生素的敏感性、毒力、膜通透性和膜电势进行分析。动物实验经中国医学科学院、北京协和医学院医药生物技术研究所实验动物管理与动物福利委员会批准(批准号:IMB-20240119D9)。结果显示,鲍曼不动杆菌ATCC 19606的lpxC基因被成功敲除,lpxC缺失后菌株失去外膜LPS,形态由杆状变为球状,细菌生长速率变慢,膜通透性升高,膜电势降低,对β-内酰胺类、喹诺酮类、氨基糖苷类、大环内酯类、糖肽类抗生素的敏感性增强,并且体内毒力大幅下降。lpxC缺失引起鲍曼不动杆菌的膜稳态、适应性发生明显改变,了解LPS缺失介导的多黏菌素耐药鲍曼不动杆菌的特征变化有利于探究鲍曼不动杆菌耐药机制、寻找治疗新策略。

关键词：鲍曼不动杆菌基因编辑 CRISPR/Cas9系统 lpxC基因多黏菌素耐药脂多糖

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