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Examining asymmetric outer-core CAPE in sheared tropical cyclones based on the FNL data set

Frontiers of Earth science 2022年第3期16卷 734-743页

作者： Yufan DAI Qingqing LI Lijuan WANG Hong CHEN Nanjing University of Information Science and Technology Nanjing 210044China Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province Haikou 570203China Pacific Typhoon Research Center Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Key Laboratory of Meteorological Disaster(the Ministry of Education) Nanjing University of Information Science and TechnologyNanjing 210044China Hainan Meteorological Observatory Haikou 570203China

The asymmetric distribution of convective available potential energy(CAPE)in the outer core of sheared tropical cyclones(TCs)is examined using the National Centers for Environmental Prediction Final operational global analysis ***(smaller)CAPE tends to appear in the downshear(upshear)*** downshear-upshear contrast in CAPE magnitude becomes much more statistically significant in moderate-to-strong *** azimuthally asymmetric CAPE is closely associated with the near-surface equivalent potential temperature(e).Larger surface winds occur in the upshear semicircle in strongly sheared TCs,contributing to larger surface latent heat fluxes in those *** lowlevel air well fueled by the larger surface latent heat fluxes in the upshear quadrants is cyclonically advected into the downstream *** a result,larger near-surfacee and CAPE are found in the outer core in the downshear quadrants.

关键词： tropical cyclone outer core asymmetry CAPE reanalysis dataset

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More extreme-heat occurrences related to humidity in China

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Atmospheric and Oceanic science Letters 2023年第5期16卷 42-48页

作者： Wenyue He Huopo Chen Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Cllaborative Iovation Centeron Forecast and Evaluation of Meteorologicalisasters/key Laboratory of Meteorological Disaster Ministryof EducationNanjing University of Information Science and TechnologyNanjingChina University of Chinese Academy of Sciences BeijingChina

极端日夜复合高温往往会造成更为严重的社会经济影响及健康风险,受到了广泛关注。本文基于ERA5逐小时资料,针对中国区域极端日夜复合湿热和高温事件的变化及其影响进行了比较分析.结果指出,中国区域夏季极端湿热和高温在空间分布上较为... 详细信息

极端日夜复合高温往往会造成更为严重的社会经济影响及健康风险,受到了广泛关注。本文基于ERA5逐小时资料,针对中国区域极端日夜复合湿热和高温事件的变化及其影响进行了比较分析.结果指出,中国区域夏季极端湿热和高温在空间分布上较为一致,强度高值区主要分布在南方地区,但高频中心主要出现在北方地区.两类事件发生频次在全国范围内均呈明显增加趋势,尤其在西部和北部地区.进一步研究表明,在中国大部分地区,湿度异常在极端湿热事件变化中有着十分重要的作用,部分区域甚至超过温度异常的影响。随着极端湿热事件的增加其影响也在加剧,自1961年以来中国暴露于极端湿热事件的人口数量和城市面积增速明显大于高温事件.

关键词：复合极端湿度暴露度热压力

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Research on Energy-Saving Optimization of Different Formation Configurations Based on Four Catamarans 30th

Research on Energy-Saving Optimization of Different Formatio...

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30th International Conference on Computational and Experimental Engineering and sciences, ICCES 2024

作者： Jiang, Bo Liang, Xu Wang, Longkan Zhang, Zhifan Wang, Yuemei State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial Equipment School of Naval Architecture Engineering Dalian University of Technology Dalian116024 China CSSC Systems Engineering Research Institute Beijing100080 China China Ship Research and Development Academy Beijing100192 China

ISBN: (纸本)9783031687747

Nowadays, sailing in formation has been the major trend with the rise of unmanned ships. In the past, research about unmanned catamaran formation were more focused on algorithmic control, but the changes in hydrodynamic performance and energy are often overlooked. In nature, various collective behaviors indicate that followers would obtain significant energy consumption from beneficial interaction in certain formation configurations. Based on the previous research, the high-speed catamaran delft-372 was chosen as the basic numerical model in this paper. Four ship’s formation configurations (tandem, "trimaran", and rectangle formations) are proposed to analyze the influence on the hydrodynamic performance of each ship, based on the Reynolds Averaged Navier-Stokes (RANS) method in combination with the Shear Stress Transport (SST) k-ω turbulence model. Through comparative analysis, it can be seen that the resistance and motion of the following ships have been optimized under specific formation configurations, but the impact of various formation configurations is quite different. In terms of single ship’s energy preservation, the last following ship of "trimaran" formation has the best performance. For the whole, tandem formation is the optimal fleet configuration. In conclusion, the hydrodynamic performance of four catamarans in different formation configurations has been studied, which can provide some reference significance. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Drag reduction

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A reference-grade genome assembly for Gossypium bickii and insights into its genome evolution and formation of pigment glands and gossypol

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Plant Communications 2023年第1期4卷 13-27页

作者： Kuang Sheng Yue Sun Meng Liu Yuefen Cao Yifei Han Cheng Li Uzair Muhammad Muhammad Khan Daud Wanru Wang Huazu Li Samrana Samrana Yixuan Hui Shuijin Zhu Jinhong Chen Tianlun Zhao Institute of Crop Science College of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina Novogene Bioinformatics Institute BeijingChina Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenChina Department of Biotechnology and Genetic Engineering Kohat University of Science and TechnologyKohatPakistan Hainan Institute Zhejiang UniversitySanyaChina

The pigment gland is a morphological characteristic of Gossypium and its related *** bickii(G_(1))is characterized by delayed pigment gland morphogenesis in the *** this study,a referencegrade genome of G_(1) was generated,and comparative genomics analysis showed that G_(1) was closest to Gossypium australe(G_(2)),followed by A-and D-genome *** large fragment translocations in chromosomes 5 and 13 were detected between the G genome and other Gossypiumgenomes and were unique to the G_(1) and G_(2) *** with the G_(2) genome,two large fragment inversions in chromosomes 12 and 13 were detected in G_(1).According to the phylogeny,divergence time,and similarity analysis of nuclear andchloroplast genomes,G_(1)was formedby hybridization between Gossypium sturtianum(C_(1))and a common ancestor of G_(2) and Gossypiumnelsonii(G_(3)).The coordinated expression patterns of pigment gland formation(GoPGF)and gossypol biosynthesis genes in G_(1) were verified to be consistent with its phenotype,and nine genes thatwere related to theprocessof pigmentgland formationwere *** gene,GbiCYP76B6,regulated by GoPGF,was found to affect gossypol *** findings offer insights into the origin and evolution of G_(1) and its mechanism of pigment gland formation and gossypol biosynthesis.

关键词： Gossypium bickii genome evolution gossypol pigment glands

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Fracture failure analysis of sensor combination pipes

Fracture failure analysis of sensor combination pipes

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2022 International Conference on Optoelectronic Information and Functional Materials, OIFM 2022

作者： Huanping, Kong Changkui, Liu Delin, Liu Aecc Beijing Institute of Aeronautical Materials Beijing China Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation Beijing China Key Lab. of Sci. and Technol. on Aero. Mat. Test. and Evaluation of Aero Engine Corporation of China Beijing China Aviation Key Laboratory of Science and Technology on Materials Testing and Evaluation Beijing China Aecc Failure Analysis Center Beijing China

ISBN: (数字)9781510655126

ISBN: (纸本)9781510655119

The sensor combination pipes fractured during operation. Through macro and micro morphology observation, energy spectrum analysis, metallographic examination and hardness test, the pipes failure properties and reasons were determined. The results showed that the failure property of dynamic pressure pipe was stress corrosion fracture, and the failure property of the static pressure pipe was corrosion fatigue cracking. The pipes failure was related to the absence of stress relief annealing, and mechanical damage on the pipe surface promoted static pressure pipe failure. © 2022 SPIE.

关键词： Corrosion fatigue

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Entropy-driven phase regulation of high-entropy transition metal oxide and its enhanced high-temperature microwave absorption by in-situ dual phases

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Journal of Materials science & technology 2022年第21期116卷 11-21页

作者： Guohao Dai Ruixiang Deng Xiao You Tao Zhang Yun Yu Lixin Song Key Laboratory of Inorganic Coating Materials CAS Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China State Key Laboratory of High Performance Ceramics&Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

High-temperature microwave absorbers are significant for military equipment which experiences severe aerodynamic *** this work,high-entropy oxide(HEO)(FexCoNiCrMn)mOn with excellent high-temperature microwave absorption is *** by the effect of entropy,the composition of the oxide can be transformed from spinel-type phase(FexCoNiCrMn)_(3)O_(4) to corundum-type phase(FexCoNiCrMn)2O3 with the increasing content of *** spinel-type or corundum-type structure composes the oxide when x≤3 or x≥*** in-situ dual phases can coexist when x equals 4 during phase ***,obliged to abundant heterogeneous interfaces and crystal defects in the dual-phase HEO,magnetic property,dielectric polarization,and microwave loss ability are all well *** Smith chart analysis demonstrates the impedance matching condition is well improved due to the enhanced loss *** findings pave a new way for the adjustment of electromagnetic properties of HEO by entropy-driven phase ***,the dual-phase absorber can achieve better than 90%absorption in 9.6-12.4 GHz at 800℃ with a thickness of 2.6 mm,a low thermal diffusivity of 0.0038 cm^(2)/s at 900℃,and excellent high-temperature stability,which indicates it’s promising as a high-temperature microwave absorber.

关键词： High entropy oxide In-situ dual phases High temperature Microwave absorption

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Generation and characterization of stable pig pregastrulation epiblast stem cell lines

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细胞研究（英文版） 2022年第4期32卷 383-400页

作者： Minglei Zhi Jinying Zhang Qianzi Tang Dawei Yu Shuai Gao Dengfeng Gao Pengliang Liu Jianxiong Guo Tang Hai Jie Gao Suying Cao Zimo Zhao Chongyang Li Xiaogang Weng Mengnan He Tianzhi Chen Yingjie Wang Keren Long Deling Jiao Guanglei Li Jiaman Zhang Yan Liu Yu Lin Daxin Pang Qianqian Zhu Naixin Chen Jingjing Huang Xinze Chen Yixuan Yao Jingcang Yang Zicong Xie Xianya Huang Mengxin Liu Ran Zhang Qiuyan Li Yiliang Miao Jianhui Tian Xingxu Huang Hongsheng Ouyang Bofeng Liu Wei Xiei Qi Zhou Hongjiang Wei Zhonghua Liu Caihong Zheng Mingzhou Li Jianyong Han State Key Laboratory of Agrobiotechnology College of Biological SciencesChina Agricultural UniversityBeijingChina Institute of Animal Genetics and Breeding College of Animal Science and TechnologySichuan Agricultural UniversityChengduSichuanChina State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijingChina Institute for Stem Cell and Regenerative Medicine Chinese Academy of SciencesBeijingChina Beijing Institute for Stem Cell and Regenerative Medicine BeijingChina Key Laboratory of Animal Genetics College of Animal Science and TechnologyChina Agricultural UniversityBeijingChina State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Yunnan Agricultural UniversityKunmingYunnanChina State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijingChina Animal Science and Technology College Beijing University of AgricultureBeijingChina Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province College of Life ScienceNortheast Agricultural UniversityHarbinHeilongjiangChina School of Life Science and Technology ShanghaiTech UniversityShanghaiChina Jilin Provincial Key Laboratory of Animal Embryo Engineering College of Animal SciencesJilin UniversityChangchunJilinChina Institute of Stem Cell and Regenerative Biology College of Animal Science and Veterinary MedicineHuazhong Agricultural UniversityWuhanHubeiChina Center for Stem Cell Biology and Regenerative Medicine MOE Key Laboratory of BioinformaticsTHU-PKU Center for Life SciencesSchool of Life SciencesTsinghua UniversityBeijingChina Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciencesand China National Center for BioinformationBeijingChina

Pig epiblast-derived pluripotent stem cells are considered to have great potential and broad prospects for human therapeutic model development and livestock *** ongoing attempts since the 1990s,no stably defined pig epiblast-derived stem cell line has been ***,guided by insights from a large-scale single-cell transcriptome analysis of pig embryos from embryonic day(E)0 to E14,specifically,the tracing of pluripotency changes during epiblast development,we developed an in vitro culture medium for establishing and maintaining stable pluripotent stem cell lines from pig E10 pregastrulation epiblasts(pgEpiSCs).Enabled by chemical inhibition of WNT-related signaling in combination with growth factors in the FGF/ERK,JAK/STAT3,and Activin/Nodal pathways,pgEpiSCs maintain their pluripotency transcriptome features,similar to those of E10 epiblast cells,and normal karyotypes after more than 240 passages and have the potential to differentiate into three germ ***,ultradeep in situ Hi-C analysis revealed functional impacts of chromatin 3D-spatial associations on the transcriptional regulation of pluripotency marker genes in *** practice,we confirmed that pgEpiSCs readily tolerate at least three rounds of successive gene editing and generated cloned gene-edited live *** findings deliver on the long-anticipated promise of pig pluripotent stem cells and open new avenues for biological research,animal husbandry,and regenerative biomedicine.

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A rapid assessment of MWRI-RM/FY3G brightness temperature

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Atmospheric and Oceanic science Letters 2024年第3期17卷 42-46页

作者： Wenying He Xinran Xia Shengli Wu Peng Zhang Hongbin Chen Xiang'ao Xia Yuquan Zhou Miao Cai LAGEO Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina School of Hydrology and Water Resources Nanjing University of Information Science&TechnologyNanjingChina National Satellite Meteorological Centure Chinese Meteorological AdministrationBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina Key Laboratory of Cloud-Precipitation Physics and Weather Modification CMABeijingChina

2023年4月发射的FY-3G上搭载17个频率的测雨微波成像仪(MWRI-RM),其业务定标的微波亮温(Tb)数据于2023年10月23日公开发布.本文比对了发布10天的MWRI-RM与全球降水测量(GPM)卫星上的微波成像仪(GMI)相匹配的Tb数据,并借助辐射传输模式... 详细信息

2023年4月发射的FY-3G上搭载17个频率的测雨微波成像仪(MWRI-RM),其业务定标的微波亮温(Tb)数据于2023年10月23日公开发布.本文比对了发布10天的MWRI-RM与全球降水测量(GPM)卫星上的微波成像仪(GMI)相匹配的Tb数据,并借助辐射传输模式进行双差分(DD)交叉定标分析,旨在快速评估新一代MWRI-RM观测数据质量.观测比较表明,MWR1-RM与GMI测量的Tb一致性很好,大多通道的平均偏差(MBE)和均方根误差(RMSE)均小于1K.两种传感器由于观测角度略有不同在水面产生约0.5 K差异.DD分析也展示出MWRI-RM的大多数通道性能与GMI相当接近,尤其是首次启用的高频166 GHz和183 GHz.

关键词： FY3G MWRI-RM GMI 亮度温度双差分方法

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A combined strategy for the overproduction of complex ergot alkaloid agroclavine

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Synthetic and Systems Biotechnology 2022年第4期7卷 1126-1132页

作者： Zhi-Pu Yu Chunyan An Yongpeng Yao Chang-Yun Wang Zhoutong Sun Chengsen Cui Ling Liu Shu-Shan Gao Key Laboratory of Marine Drugs The Ministry of Education of ChinaInstitute of Evolution&Marine BiodiversitySchool of Medicine and PharmacyOcean University of ChinaQingdao266003PR China Tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjin300308PR China Laboratory for Marine Drugs and Bioproducts Qingdao National Laboratory for Marine Science and TechnologyQingdao266003PR China State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing100101PR China Beijing Institute for Drug Control NMPA Key Laboratory for Research and Evaluation of Generic DrugsBeijing Key Laboratory of Analysis and Evaluation on Chinese MedicineBeijing102206PR China National Technology Innovation Center of Synthetic Biology Tianjin300308PR China

Microbial cell factories(MCFs)and cell-free systems(CFSs)are generally considered as two unrelated approaches for the biosynthesis of *** the current study,two systems were combined together for the overproduction of agroclavine(AC),a structurally complex ergot *** whole biosynthetic pathway for AC was split into the early pathway and the late pathway at the point of the FAD-linked oxidoreductase EasE,which was reconstituted in an MCF(Aspergillus nidulans)and a four-enzyme CFS,*** final titer of AC of this combined system is 1209 mg/L,which is the highest one that has been reported so far,to the best of our *** development of such a combined route could potentially avoid the limitations of both MCF and CFS systems,and boost the production of complex ergot alkaloids with polycyclic ring systems.

关键词： Microbial cell factories Cell-free systems Overproduction Agroclavine Ergot alkaloids

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Constructing a Raman and surface-enhanced Raman scattering spectral reference library for fine-particle analysis

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Journal of Environmental sciences 2022年第8期34卷 1-13页

作者： Hui Chen Fengkui Duan Kebin He Jingjing Du Zhenli Sun Suhua Wang Key Laboratory of Resources and Environmental System Optimization of Ministry of Education College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaoming 525000 China

Fine particles associated with haze pollution threaten the health of over 400 million people in China. Owing to excellent non-destructive fingerprint recognition characteristics, Raman and surface-enhanced Raman scattering(SERS) are often used to analyze the composition of fine particles to determine their physical and chemical properties as well as reaction mechanisms. However, there is no comprehensive Raman spectral library of fine particles. Furthermore, various studies that used SERS for fine-particle composition analysis showed that the uniqueness of the SERS substrates and different excitation wavelengths can produce a different spectrum for the same fine-particle component. To overcome this limitation, we conducted SERS experiments with a portable Raman spectrometer using two common SERS substrates(silver(Ag) foil and gold nanoparticles(Au NPs)) and a 785 nm laser. Herein, we introduced three main particle component types(sulfate-nitrate-ammonium(SNA), organic material, and soot) with a total of 39 chemical substances. We scanned the solid Raman, liquid Raman, and SERS spectra of these substances and constructed a fine-particle reference library containing 105 spectra. Spectral results indicated that for soot and SNA, the differences in characteristic peaks mainly originated from the solid-liquid phase transition;Ag foil had little effect on this difference, while the Au NPs caused a significant red shift in the peak positions of polycyclic aromatic hydrocarbons. Moreover, with various characteristic peak positions in the three types of spectra, we could quickly and correctly distinguish substances. We hope that this spectral library will aid in the future identification of fine particles.

关键词： Raman Surface-enhanced Raman scattering(SERS) Spectral library Fine-particle

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