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Bacterial community characteristics in epigeic and anecic earthworm vermicompartments within soil-earthworm systems

Pedosphere 2024年第6期34卷 1038-1050页

作者： Zhiming SHI Shuyu SHI Wenwen LI congying wang Feng HU College of Environmental and Resource Sciences Shanxi University Soil Ecology Laboratory College of Resources and Environmental SciencesNanjing Agricultural University Shanxi Laboratory for Yellow River Shaanxi Key Laboratory of Land Consolidation School of Land EngineeringChang'an University

Earthworms are crucial to soil ecosystems as keystone species. They perform various ecological functions through their associated microbiomes. However,the characteristics of these microbiomes in various vermicompartments(earthworm-associated compartments) within soil-earthworm systems have not been systematically studied. Here, using earthworms of two ecotypes(i.e., epigeic Eisenia fetida and anecic Metaphire guillelmi) as models, we conducted a full and comprehensive exploration of the bacterial community in several potential distinct compartments, including bulk soil, drilosphere, gut wall,gut content, and casts, through 2D-terraria incubation technology and high-throughput sequencing approaches. Bacterial diversity, community structures in each compartment, differential OTUs in vermicompartments compared with bulk soil, and the co-occurrence relationship of bacteria in bulk soil and gut-compartments(i.e., gut wall and gut content) were assessed. Results showed that three major vermicompartments, i.e., drilosphere, gut, and casts, were distinctly different in hosting the bacterial community. The levels of alpha diversity followed the order of drilosphere > casts > gut wall ≈ gut content. These patterns of vermicompartments along earthworms did not vary with ecotype, implying that the vermicompartments were the primary factors influencing the bacterial community. Finally, based on the difference in microbiomes in gut-compartments and the state-of-the-art use of the term “gut microbiomes”, it is recommended to establish a unified definition of gut microbes that encompasses microbiomes residing in both the gut wall and gut content, which could provide a clear and consistent understanding of gut microbiomes. This work provides a comprehensive overview of earthworm-associated microbiomes,enhancing our understanding of fundamental earthworm ecology and soil biology.

关键词： bulk soil cast compartment drilosphere ecotype gut microbiome

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Effect of pore-size distribution on Ru/ZSM-5 catalyst for enhanced N2 activation to ammonia via dissociative mechanism

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Journal of Rare Earths 2020年第8期38卷 873-882,I0002页

作者： Jihui Cai congying wang Yi Liu Jun Ni Bingyu Lin Xiuyun wang Jianxin Lin Lilong Jiang National Engineering Research Center of Chemical Fertilizer Catalyst Fuzhou UniversityFuzhou 350002China

In the present study,a series of Ru/ZSM-5 catalysts with different pore-size distributions were prepared and investigated for NH3 *** studies indicate that Ru/ZSM-5-Mic with micropore structure exhibits superior NH3 synthesis rate,which is much higher than those of Ru/ZSM-5-Mac(with macroporous structure)and Ru/ZSM-5-Mes(with mesoporous structure)catalysts.A series of TPD experiments demonstrate that pore-size distributions play an important role in N2 adsorption and activation over Ru/***,the addition of La significantly promotes the NH3 synthesis performance over Ru/***,in situ DRIFTS studies indicate that the main intermediate species over Ru/ZSM-5-Mic are-NH2,and most of the surface hydrogen species desorb following the H2O-formation pathway.

关键词： Ru/ZSM-5 La Ammonia synthesis Pore-size distribution Reaction pathway Rare earths

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Highly efficient subnanometer Ru-based catalyst for ammonia synthesis via an associative mechanism

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Chinese Journal of Chemical Engineering 2022年第3期35卷 177-184页

作者： Yanliang Zhou Qianjin Sai Zhenni Tan congying wang Xiuyun wang Bingyu Lin Jun Ni Jianxin Lin Lilong Jiang National Engineering Research Center of Chemical Fertilizer Catalyst Fuzhou UniversityFuzhou 350002China

The industrial manufacture of ammonia(NH_(3))using Fe-based catalyst works under rigorous *** the goal of carbon-neutrality,it is highly desired to develop advanced catalyst for NH_(3)synthesis at mild conditions to reduce energy consumption and CO_(2)***,the main challenge of NH_(3)synthesis at mild conditions lies in the dissociation of steady N≡N triple *** this work,we report the design of subnanometer Ru clusters(0.8 nm)anchored on the hollow N-doped carbon spheres catalyst(Ru-SNCs),which effectively promotes the NH_(3)synthesis at mild conditions via an associative *** NH_(3)synthesis rate over Ru-SNCs(0.49%(mass)Ru)reaches up to 11.7 mmol NH_(3)·(g cat)^(-1)·h^(-1) at 400℃ and 3 MPa,which is superior to that of 8.3 mmol NH_(3)·(g cat)^(-1)·h^(-1) over Ru nanoparticle catalyst(1.20%(mass)Ru).Various characterizations show that the N_(2)H_(4)species are the main intermediates for NH_(3)synthesis on Ru-SNCs *** demonstrates that Ru-SNCs catalyst can follow an associative route for N_(2)activation,which circumvents the direct dissociation of N_(2)and results in highly efficient NH_(3)synthesis at mild conditions.

关键词： Ammonia synthesis Sustainability Subnanometer Ru clusters Associative route Catalysis

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Neuron stem cell NLRP6 sustains hippocampal neurogenesis to resist stress-induced depression

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Acta Pharmaceutica Sinica B 2023年第5期13卷 2017-2038页

作者： Chuanfeng Tang Qiaona wang Jingyan Shen congying wang Hong Ding Shiyu Wen Fan Yang Ruiqing Jiao Xingxin Wu Jianmei Li Lingdong Kong State Key Laboratory of Pharmaceutical Biotechnology School of Life SciencesNanjing UniversityNanjing 210023China State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 210009China

Neurogenesis decline in hippocampal dentate gyrus(DG)participates in stress-induced depressive-like behaviors,but the underlying mechanism remains poorly ***,we observed low-expression of NOD-like receptor family pyrin domain containing 6(NLRP6)in hippocampus of stress-stimulated mice,being consistent with high corticosterone ***6 was found to be abundantly expressed in neural stem cells(NSCs)of *** Nlrp6 knockout(Nlrp6^(-/-))and NSCconditional Nlrp6 knockout(Nlrp6CKO)mice were susceptible to stress,being more likely to develop depressive-like ***,NLRP6 was required for NSC proliferation in sustaining hippocampal neurogenesis and reinforcing stress resilience during growing ***6 deficiency promoted esophageal cancer-related gene 4(ECRG4)expression and caused mitochondrial *** as a stress factor significantly down-regulated NLRP6 expression,damaged mitochondrial function and suppressed cell proliferation in NSCs,which were blocked by Nlrp6 ***4 knockdown reversed corticosterone-induced NSC mitochondrial function and cell proliferation ***,a well-known clinical drug,up-regulated NLRP6 expression to inhibit ECRG4 expression in its protection against corticosterone-induced NSC mitochondrial dysfunction and proliferation *** conclusion,this study demonstrates that NLRP6 is essential to maintain mitochondrial homeostasis and proliferation in NSCs,and identifies NLRP6 as a promising therapeutic target for hippocampal neurogenesis decline linked to depression.

关键词： NLRP6 Neural stem cells Stress resilience Depressive-like behaviors ECRG4 Mitochondrial function Proliferation Pioglitazone

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Carbon nanotube films with ultrahigh thermal-shock and thermalshock-fatigue resistance characterized by ultra-fast ascending shock testing

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Nano Research 2024年第8期17卷 6777-6784页

作者： Mingquan Zhu Shijun wang Yunxiang Bai Feng Gao Zhenxing Zhu congying wang Peng Zhang Hao Jin Hui Zhang Luqi Liu Zhiping Xu Xinghong Zhang Fei Wei Zhong Zhang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Department of Engineering Mechanics Tsinghua UniversityBeijing 100084China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Center for Composite Materials and StructuresHarbin Institute of TechnologyHarbin 150001China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei 230027China

The exploration of material failure behavior not only involves defining its limits and underlying mechanisms but also entails devising strategies for improvement and protection in extreme ***'ve pioneered an advanced multi-scale,high-speed ascending thermal shock testing platform capable of inducing unprecedented heat shocks at rates surpassing 105℃/*** meticulous examination of the thermal shock responses of carbon nanotube(CNT)films,we've achieved remarkable *** employing an innovative macro-scale synchronous tightening and relaxing approach,we've attained a critical temperature differential in CNT films that exceeds an exceptional 2500℃—surpassing any previously reported metric for highperformance,thermal-shock-resistant ***,these samples have demonstrated exceptional resilience,retaining virtually unchanged strength even after enduring 10,000 thermal shock cycles at temperatures exceeding 1000℃.Furthermore,our research has revealed a novel thermal shock/fatigue failure mechanism that fundamentally diverges from conventional theories centered on thermal stress.

关键词： carbon nanotubes failure behavior thermal shock characterization

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Fabricating bio-inspired high impact resistance carbon nanotube network films for multi-protection under an extreme environment

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Nano Research 2024年第9期17卷 7793-7802页

作者： Mingquan Zhu Kailu Xiao Wei Zhang Xudong Lei Yunxiang Bai Shijun wang Peng Zhang Feng Gao congying wang Wenqiang Xu Huiyong Li Xianqian Wu Chao wang Hui Zhang Luqi Liu Zhong Zhang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Department of Materials Science and Engineering Texas A&M UniversityCollege StationTexas 77840USA Institute of Mechanics Chinese Academy of SciencesBeijing 100190China School of Astronautics Harbin Institute of TechnologyHarbin150001China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei 230027China

The fabrication of light-weight,highly impact-resistant,and energy-absorbent materials is urgently demanded in many facets of the society from body armor to aerospace engineering,especially under an extreme *** nanotubes(CNTs),one of the strongest and toughest materials ever found,also have good conductivity,chemical stability,and thermal stability,etc,making them a competitive candidate as building blocks to help achieve the above *** this work,a kind of CNT network was prepared by using chlorosulfonic acid(CSA)to release the internal stress of super-aligned carbon nanotube films(SA-CNTF)and dendritic polyamide amine(PAMAM)to further introduce multiple hydrogen bonds and interlocking *** fabricated bioinspired carbon nanotube network films(PAMAM@C-CNTF)have a high toughness of 45.97 MJ/m3,showing an increase of 420%compared to neat *** importantly,the anti-impact performance of the films(e.g.,with a maximum specific energy absorption of 1.40 MJ/kg under 80-100 m/s projectile impact)is superior to that of conventional protective materials from steel and Kevlar fiber,and also exceeds that of any other reported carbon-based *** hierarchical energy dissipation mechanism was further revealed through experiment and *** functions including intelligent heating/anti-icing,ultraviolet protection,as well as electromagnetic interference shielding properties make these network films have great potential in practical multi-protection applications,especially under an extreme environment.

关键词： carbon nanotubes composites mechanical properties multi-function

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Boosting Efficient Ammonia Synthesis over Atomically Dispersed Co-Based Catalyst via the Modulation of Geometric and Electronic Structures

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CCS Chemistry 2022年第5期4卷 1758-1769页

作者： Yanliang Zhou congying wang Xuanbei Peng Tianhua Zhang Xiuyun wang Yafei Jiang Haifeng Qi Lirong Zheng Jianxin Lin Lilong Jiang National Engineering Research Center of Chemical Fertilizer Catalyst Fuzhou UniversityFuzhouFujian 350002 Department of Chemistry Southern University of Science and TechnologyShenzhen 518055 Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023 Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049

Ammonia(NH_(3))synthesis at mild conditions is of great significance,while the significant bottleneck of this process is the activation of N_(2) to realize the desired NH_(3) synthesis performance,which requires deep insight and rational design of active sites at the atomic ***,were synthesized atomically dispersed Co-based catalysts with different Co-N coordination numbers(CNs)to explore the coordination-sensitive NH_(3) synthesis reaction for the first *** studies showed that Co-based catalysts increased the NH_(3) synthesis rate gradually with a decrease in *** Co-N_(2) catalyst exhibited the highest NH_(3) synthesis rate of 85.3 mmol gCo^(−1) h^(−1) at 300℃ and 1 MPa,which outperformed most of the previously reported Co-based *** characterizations and theoretical calculations demonstrated that atomically dispersed Co catalyst with low CN could generate more unoccupied Co 3d charges and tetrahedral cobalt(Ⅱ)*** unoccupied Co 3d charge,in turn,promoted the electron donation from the Co active center to the antibonding π-orbital(π*)of N_(2) and expedites N_(2) ***,the Co-N_(2) catalyst with more tetrahedral cobalt(II)sites could effectively facilitate the desorption of N-containing intermediate species(such as*NH_(3) and*N_(2)H_(4))to obtain a high NH_(3) synthesis rate.

关键词： ammonia synthesis coordination number electron transfer geometric structure intermediate species

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Pottery Figurines Tell Story

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Women of China 2019年第1期 17-19页

作者： YE SHAN wang congying 不详

A series of nine illustrations about pottery figurines,each with a cute cartoon image and a popular Internet phrase,went viral on Weibo last *** illustrator,whose online name is Baili Muyan,has since attracted many *** illustrator,whose real name is wang congying,is a fine arts teacher in Taizhou,in East China's Zhejiang *** hopes to have her series of pottery-figurine illustrations *** also has another dream:To produce an animated film highlighting cultural relics from ancient China.

关键词：陶俑南京博物院美术老师浙江台州九宫格插画师作品集表情

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Spectral polarization-encoding of broadband laser pulses by optical rotatory dispersion and its applications in spectral manipulation

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Chinese Physics B 2021年第7期30卷 556-561页

作者： Xiaowei Lu congying wang Xuanke Zeng Jiahe Lin Yi Cai Qinggang Lin Huangcheng Shangguan Zhenkuan Chen Shixiang Xu Jingzhen Li Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronics EngineeringShenzhen UniversityShenzhen 518060China Collaborative Innovation Center for Optoelectronic Science and Technology International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology(Ministry of Education)Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China

We propose a kind of spectral polarization-encoding(SPE)for broadband light pulses,which is realized by inducing optical rotatory dispersion(ORD),and decoded by compensating *** with polarization-sensitive devices,SPE can not only work to control polarization-dependent transmission for central wavelength or bandwidth-tunable filtering,but also can be used for broadband regenerative or multi-pass amplification with a polarization-dependent gain medium to improve output *** is entirely passive thus very simple to be designed and *** using an ORD crystal with a good transmission beyond 3-μm mid-infrared region,e.g.,Ag Ga S_(2),SPE promises to be applied for the wavelength tuning lasers in mid-infrared region,where the tunning devices are rather under developed compared with those in visible and near-infrared region.

关键词： ultrafast optics optical rotatory dispersion spectral polarization-encoding spectral manipulation

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Forty-five terawatt vortex ultrashort laser pulses from a chirped-pulse amplification system

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High Power Laser Science and Engineering 2022年第5期10卷 50-56页

作者： Zhenkuan Chen Shuiqin Zheng Xiaoming Lu Xinliang wang Yi Cai congying wang Maijie Zheng Yuexia Ai Yuxin Leng Shixiang Xu Dianyuan Fan Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityGuangzhouChina SZU-NUS Collaborative Innovation Center for Optoelectronic Science&Technology Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen UniversityGuangzhouChina State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghaiChina Great Bay University DongguanChina

We report on a vortex laser chirped-pulse amplification(CPA)system that delivers pulses with a peak power of 45 TW.A focused intensity exceeding 1019 W/cm2 has been demonstrated for the first time by the vortex amplification *** with other schemes of strong-field vortex generation with high energy flux but narrowband vortex-converting elements at the end of the laser,an important advantage of our scheme is that we can use a broadband but size-limited q-plate to realize broadband mode-converting in the front end of the CPA system,and achieve high-power amplification with a series of *** method is low cost and can be easily implemented in an existing laser *** results have verified the feasibility to obtain terawatt and even petawatt vortex laser amplification by a CPA system,which has important potential applications in strong-field laser physics,for example,generation of vortex particle beams with orbital angular momentum,fast ignition for inertial confinement fusion and simulation of the extreme astrophysical environment.

关键词： high-power laser light amplification mode conversion optical vortex

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