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Vertical microbial profiling of water column reveals prokaryotic communities and distribution features of Antarctic Peninsula

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Acta Oceanologica Sinica 2023年第9期42卷 90-100页

作者： Jiang Li Luying Zhao Xiaoqian gu chengxuan Li Qian Zhang Liping Fu Ao Zhang Marine Biological Resources and Environment Center First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China Ministry of Natural Resources Key Labatary for Science&Technology of Marine Ecosystems Qingdao 266061China CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China College of Chemical Engineering Qingdao University of Science&TechnologyQingdao 266042China

Prokaryotic diversity and community composition in the water column of eight stations(63 samples) around the Antarctic Peninsula of the Southern Ocean were investigated. Through pyrosequencing of the V3–V4hypervariable regions of the 16S ribosomal RNA gene, we characterized 4 720 089 valid reads representing 48 188operational taxonomic units(OTUs, 97% similarity). The community was dominated by the phyla Pseudomonadota(original name: Proteobacteria, 47%), Oxyphotobacteria(26%), and Bacteroidota(original name: Bacteroidetes, 18%), which comprised an average of 91% of the total OTUs in all samples. The prokaryotic community composition varied vertically within the water column. Water column prokaryotic communities exhibited a clear depth profile, with higher microbial richness and higher diversity observed with increasing water depth. Cluster analysis of the community composition of water column samples exhibited a similar trend with depth. Correlation with environmental factors suggested distinct variation in prokaryotic community composition with changes in depth, salinity, temperature and dissolved oxygen levels. Functional prediction showed presence of active nitrogen, sulphur and methane metabolic cycles along the vertical transect of the studied region. These results will improve our knowledge of prokaryotic diversity and community composition at different depth of water column for better understanding of the microbial ecology and nutrient cycles in Antarctic Peninsula region of the Southern Ocean.

关键词： prokaryotic diversity 16S rRNA high-throughput sequencing(HTS) Southern Ocean

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Adsorption behavior of CO_(2) in magnesite micro-pores at high temperature and pressure

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Geoscience Frontiers 2021年第2期12卷 991-999页

作者： Longxing Yang Lei Liu Hong Liu Li Yi Xiaoyu gu Haibo Liu Hanyu Wang United Laboratory of High-Pressure Physics and Earthquake Science Key Laboratory of Earthquake PredictionInstitute of Earthquake ForecastingCEABeijing100036China

The fluid inclusions in mantle rocks and melt indicated that a large amount of CO_(2)fluid exists in the deep earth,which is of great significance for understanding the deep carbon cycle and the composition of ***,it was also suggested that carbonate minerals were likely to be the main host of mantle *** the same time,the distribution and behavior of carbon in the mantle still remain a *** this paper,the adsorption behavior and occurrence characteristics of supercritical CO_(2)in magnesite(MgCO3)pores were studied by the Grand Canonical Monte Carlo method(GCMC)under the different conditions of CO_(2)pressures(0–100 MPa),temperatures(350–1500 K)and the pore sizes(7.5–30Å).The simulated results showed that the adsorption of CO_(2)in magnesite was a physical adsorption,which was mainly controlled by the intermolecular *** gas adsorption became more stable when the adsorption site shifted from the high energy site to the low energy site with increasing pressure(P)and decreasing temperature(T)and pore *** the same time,the variations of excess adsorption amounts of CO_(2)in the pores of magnesite(Nexcess)under the different conditions were quantitatively *** was found that the Nexcess decreased with increasing T,but increased with increasing P and pore *** results favor understanding the CO_(2)migration,seismic precursor observations,and heat transfer process in the deep earth.

关键词： CO_(2) Magnesite Adsorption Nexcess GCMC Carbon cycle

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Morphology and size controlled synthesis of Co-doped MIL-96 by different alkaline modulators for sensitively detecting alpha-fetoprotein

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Chinese Chemical Letters 2020年第9期31卷 2263-2267页

作者： Chaonan gu Jingjing Li guang Yang Liming Zhang Chun-Sen Liu Huan Pang Henan Provincial Key Laboratory of Surface&Interface Science Zhengzhou University of Light IndustryZhengzhou 450002China School of Chemistry and Chemical Engineering Guangling CollegeYangzhou UniversityYangzhou 225009China School of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China

This work introduces a simple and facile approach for the morphology and size controlled synthesis of Co-doped *** using different bases as modulators,Co-doped MIL-96 was obtained with sizes that varied from 5 μm to 300 nm,and four different morphologies,including hexagonal prism,icosahedron,hexagonal spindle and *** these,nano-sized Co-doped MIL-96 with an ellipsoid morphology exhibited the highest electroactive surface area and good conductivity as well as the best electrochemical sensing performance towards α-fetoprotein.

关键词： Morphology/size MIL-96 Modulator Aptasensor Alpha-fetoprotein

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SJ-17卫星LHT-100霍尔电推进系统飞行试验工作性能评价

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推进技术 2017年第11期38卷 2411-2421页

作者：田立成赵成仁张天平顾左郭宁高俊张保平胡向宇程彬兰州空间技术物理研究所真空技术与物理重点实验室甘肃兰州730000

为了验证霍尔电推进系统的空间环境适应性、与航天器的相互兼容性、空间工作特性及空间飞行性能与地面数据的差异性,LHT-100霍尔电推进系统搭载SJ-17新技术验证卫星开展了在轨飞行试验,对霍尔电推进系统在轨飞行试验结果进行了详细评价... 详细信息

为了验证霍尔电推进系统的空间环境适应性、与航天器的相互兼容性、空间工作特性及空间飞行性能与地面数据的差异性,LHT-100霍尔电推进系统搭载SJ-17新技术验证卫星开展了在轨飞行试验,对霍尔电推进系统在轨飞行试验结果进行了详细评价。结果表明:在整个飞行试验期间LHT-100霍尔电推进系统各项工作性能参数符合设计指标要求,其中推力79.5m N,比冲1531s,系统功率低于1.527k W,单次长时间工作8h,在轨系统开关机次数大于24次,在轨累计点火时间超过3028min,在轨飞行试验数据与地面试验数据具有很好的一致性。

关键词：卫星霍尔电推进系统飞行试验工作性能评价

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A novel approach for flip chip inspection based on improved SDELM and vibration signals

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Science China(Technological Sciences) 2022年第5期65卷 1087-1097页

作者： SU Lei ZHANG Siyu JI Yong WANG Gang MING XueFei gu JieFei LI Ke PECHT Michael Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology School of Mechanical EngineeringJiangnan UniversityWuxi214122China The 58th Research Institute of China Electronics Technology Group Corporation Wuxi214000China Center for Advanced Life Cycle Engineering University of MarylandCollege ParkMD20742USA

This paper proposes a novel nondestructive diagnostic method for flip chips based on an improved semi-supervised deep extreme learning machine(ISDELM)and vibration ***,an ultrasonic transducer is used to generate and focus ultrasounds on the surface of the flip chip to excite it,and a laser scanning vibrometer is applied to acquire the chip’s vibration ***,an extreme learning machine-autoencoder(ELM-AE)structure is adopted to extract features from the original vibration signals layer by ***,the study proposes integrating the ELM with sparsity neighboring reconstruction to diagnose defects based on unlabeled and labeled *** ISDELM algorithm is applied to experimental vibration data of flip chips and compared with several other algorithms,such as semi-supervised ELM(SS-ELM),deep ELM,stacked autoencoder,convolutional neural network,and ordinary *** results show that the proposed method is superior to the several currently available algorithms in terms of accuracy and stability.

关键词： flip chip nondestructive diagnosis improved semi-supervised deep extreme learning machine vibration signal

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A New Algorithm of Rain Type Classification for GPM Dual-Frequency Precipitation Radar in Summer Tibetan Plateau

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Advances in Atmospheric Sciences 2024年第11期41卷 2093-2111页

作者： yunfei FU Liu YANG Zhenhao WU Peng ZHANG Songyan gu Lin CHEN Sun NAN School of Earth and Space Sciences CMA-USTC Laboratory of Fengyun Remote SensingUniversity of Science and Technology of ChinaHefei 230026China Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research Institute of Heavy RainChina Meteorological AdministrationWuhan 430205China National Satellite Meteorological Center China Meteorological AdministrationBeijing 100081China

In this study, a new rain type classification algorithm for the Dual-Frequency Precipitation Radar(DPR) suitable over the Tibetan Plateau(TP) was proposed by analyzing Global Precipitation Measurement(GPM) DPR Level-2 data in summer from 2014 to 2020. It was found that the DPR rain type classification algorithm(simply called DPR algorithm) has mis-identification problems in two aspects in summer TP. In the new algorithm of rain type classification in summer TP,four rain types are classified by using new thresholds, such as the maximum reflectivity factor, the difference between the maximum reflectivity factor and the background maximum reflectivity factor, and the echo top height. In the threshold of the maximum reflectivity factors, 30 d BZ and 18 d BZ are both thresholds to separate strong convective precipitation, weak convective precipitation and weak precipitation. The results illustrate obvious differences of radar reflectivity factor and vertical velocity among the three rain types in summer TP, such as the reflectivity factor of most strong convective precipitation distributes from 15 d BZ to near 35 d BZ from 4 km to 13 km, and increases almost linearly with the decrease in height. For most weak convective precipitation, the reflectivity factor distributes from 15 d BZ to 28 d BZ with the height from 4 km to 9 km. For weak precipitation, the reflectivity factor mainly distributes in range of 15–25 d BZ with height within 4–10 km. It is also shows that weak precipitation is the dominant rain type in summer TP, accounting for 40%–80%,followed by weak convective precipitation(25%–40%), and strong convective precipitation has the least proportion(less than 30%).

关键词： satellite precipitation radar rain type classification method Tibetan Plateau strong convective precipitation

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动力转向器转阀外圆跳动对静特性的影响

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机床与液压 2013年第17期41卷 88-90页

作者：陈诚顾晋湖北汽车工业学院科技学院湖北十堰442002 东风汽车传动轴有限公司湖北十堰442054

探讨了动力转向器转阀刃口结构对总成静特性的影响,通过建立输入轴外圆跳动与刃口宽度变化的数学关系,确定了外圆跳动是造成转阀刃口宽度变化的主要原因,提出了改进措施以保证转向器静特性符合理想曲线。

关键词：动力转向器转阀静特性圆跳动

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Expanding the horizons of targeted protein degradation:A non-small molecule perspective

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Acta Pharmaceutica Sinica B 2024年第6期14卷 2402-2427页

作者： Xiaowei Huang Fengbo Wu Jing Ye Lian Wang Xiaoyun Wang Xiang Li gu He Department of Pharmacy and Department of Dermatology&Venerology West China HospitalSichuan UniversityChengdu 610041China Department of Urology West China HospitalSichuan UniversityChengdu 610041China Laboratory of Dermatology Clinical Institute of Inflammation and ImmunologyFrontiers Science Center for Disease-Related Molecular Network and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China

Targeted protein degradation(TPD)represented by proteolysis targeting chimeras(PROTACs)marks a significant stride in drug discovery.A plethora of innovative technologies inspired by PROTAC have not only revolutionized the landscape of TPD but have the potential to unlock functionalities beyond ***-small-molecule-based approaches play an irreplaceable role in this field.A wide variety of agents spanning a broad chemical spectrum,including peptides,nucleic acids,antibodies,and even vaccines,which not only prove instrumental in overcoming the constraints of conventional small molecule entities but also provided rapidly renewing *** we summarize the burgeoning non-small molecule technological platforms inspired by PROTACs,including three major trajectories,to provide insights for the design strategies based on novel paradigms.

关键词： Targeted protein degradation Proteolysis targeting chimera Endocytosis Autophagy Proximity-inducing modality Post-translational modification

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Suppressing dendritic metallic Li formation on graphite anode under battery fast charging

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Journal of Energy Chemistry 2024年第4期91卷 484-500页

作者： Shiyu Liu Baoqi gu Zihe Chen Renming Zhan Xiancheng Wang Ruikang Feng Yongming Sun Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074HubeiChina

Lithium-ion batteries(LIBs)with fast-charging capability are essential for enhancing consumer experience and accelerating the global market adoption of electric ***,achieving fast-charging capability without compromising energy density,cycling lifespan,and safety of LIBs remains a significant challenge due to the formation of dendritic Li metal on graphite anode under fast charging *** view of this,the fundamentals for the dendritic metallic Li formation and the strategies for suppressing metallic Li plating based on analyzing the entire Li^(+)transport pathway at the anode including electrolyte,pore structure of electrode,and surface and bulk of materials are summarized and discussed in this ***,we highlight the importance of designing thick electrodes with fast Li^(+)transport kinetics and comprehensively understanding the interaction between solid electrolyte interphase(SEI)and Li^(+)migration in order to avoid the formation of dendritic Li metal in practical fast-charging ***,the regulation of Li metal plating with plane morphology,instead of dendritic structure,on the surface of graphite electrode under fast-charging condition is analyzed as a future direction to achieve higher energy density of batteries without safety concerns.

关键词： Safety Fast-charging lithium-ion batteries Dendritic metallic lithium Li^(+) transport

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Three decades of topic evolution,hot spot mining and prospect in CCUS Studies based on CitNetExplorer

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Chinese Journal of Population,Resources and Environment 2022年第1期20卷 91-104页

作者： Huajing Zhang Ding Li Xuan gu Nan Chen University Library Southwestern University of Finance and EconomicsChengdu 611130China School of Public Administration Southwestern University of Finance and EconomicsChengdu 611130China School of Marxism Southwestern University of Finance and EconomicsChengdu 611130China

As a major strategic technology for reducing greenhouse gas emissions and ensuring energy security,carbon capture,utilization,and storage(CCUS)is of great significance to large-scale emission *** the perspective of knowledge discovery,it is important to analyse the study progress based on existing study achievements,excavate the evolution characteristics of study topics over time,review stage-specific findings,and construct CCUS domain knowledge *** will help researchers gain an overall understanding of CCUS studies and promote the industry-college-research cooperation in respect to *** on the Web of Science(WOS)database platform and CitNet-Explorer software,the present study explore the international research progress,topic evolution track,research hotspot and research trend of CCUS technology since its birth nearly 30 years ago,using bibliometric method,citation network visualization analysis method and cluster analysis *** the analysis of literature citation network,it is found that:16 CCUS topics,6 hotspots have been studied in the last three *** topics of CCUS studies present an evolution path from CCUS technology security and economicfeasibility analysis to CCUS technological popularization,and then CCUS technological improvement and ***-edge CCUS looks at the process and infrastructure construction,cost effectiveness and development prospect *** focuses on improvement of process technologies and related infrastructure.

关键词： CCUS CitNetExplorer Bibliometric Citation network Topic evolution

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