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Spatial compartmentalization and temporal stability of associated microbiota in Pacific oyster Crassostrea gigas

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Journal of Oceanology and Limnology 2024年第4期42卷 1348-1358页

作者： Qiang FU Zichao YU junyan zhao Lei GAO Ning KONG Lingling WANG Linsheng SONG Liaoning Key Laboratory of Marine Animal Immunology and Disease Control Dalian Ocean UniversityDalian 116023China Functional Laboratory of Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control Dalian Ocean UniversityDalian 116023China

The Pacific oyster Crassostrea gigas,one of the most exploited molluscs in the world,has suffered from massive mortality in recent decades,and the occurrence mechanisms have not been well *** this study,to reveal the relationship of associated microbiota to the fitness of oysters,temporal dynamics of microbiota in the gill,hemolymph,and hepatopancreas of *** during April 2018-January 2019 were investigated by 16 S rRNA gene *** microbiota in *** exhibited tissue heterogeneity,of which Spirochaetaceae was dominant in the gill and hemolymph while Mycoplasmataceae enriched in the ***-occurrence network demonstrated that the gill microbiota exhibited higher inter-taxon connectivity while the hemolymph microbiota had more *** richness(Chao 1 index)and diversity(Shannon index)of microbial community in each tissue showed no significant seasonal variations,except for the hepatopancreas having a higher richness in the ***,beta diversity analysis indicated a relatively stable microbiota in each tissue during the sampling period,showing relative abundance of the dominant taxa exhibiting temporal *** indicate that the microbial community in *** showed a tissue-specific stability with temporal dynamics in the composition,which might be essential for the tissue functioning and environmental adaption in *** work provides a baseline microbiota in *** and is helpful for the understanding of host-microbiota interaction in oysters.

关键词： Pacific oyster associated microbiota spatial compartmentalization temporal stability

Hardy space estimate of the maximal wave operator

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Acta Mathematica Sinica,English Series 2024年

作者： Jiecheng CHEN Dashan FAN junyan zhao School of Mathematical Sciences Zhejiang Normal University Department of Mathematical Sciences University of Wisconsin-Milwaukee

In this paper, we obtain the sharp Hardy space estimate of the maximal wave *** applications on spherical averages and their combinations are also given.

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A novel method for atomization energy prediction based on natural-parameter network

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Chinese Chemical Letters 2024年第1期35卷 505-509页

作者： Chaoqin Chu Qinkun Xiao Chaozheng He Chen Chen Lu Li junyan zhao Jinzhou Zheng Yinhuan Zhang School of Mechanical and Electrical Engineering Xi’an Technological UniversityXi’an 710021China School of Electrical and Information Engineering Xi’an Technological UniversityXi’an 710021China School of Materials Science and Chemical Engineering Xi’an Technological UniversityXi’an 710021China

Atomization energy(AE)is an important indicator for measuring material stability and reactivity,which refers to the energy change when a polyatomic molecule decomposes into its constituent *** AE based on the structural information of molecules has been a focus of researchers,but existing methods have limitations such as being time-consuming or requiring complex preprocessing and large amounts of training *** learning(DL),a new branch of machine learning(ML),has shown promise in learning internal rules and hierarchical representations of sample data,making it a potential solution for AE *** address this problem,we propose a natural-parameter network(NPN)approach for AE *** method establishes a clearer statistical interpretation of the relationship between the network’s output and the given *** use the Coulomb matrix(CM)method to represent each compound as a structural information ***,we also designed an end-to-end predictive *** results demonstrate that our method achieves excellent performance on the QM7 and BC2P datasets,and the mean absolute error(MAE)obtained on the QM7 test set ranges from 0.2 kcal/mol to 3 kcal/*** optimal result of our method is approximately an order of magnitude higher than the accuracy of 3 kcal/mol in published ***,our approach significantly accelerates the prediction ***,this study presents a promising approach to accelerate the process of predicting structures using DL,and provides a valuable contribution to the field of chemical energy prediction.

关键词： Structure prediction Atomization energy Deep learning Coulomb matrix NPN End-to-end

Formation Mechanism of Ground Fissures Originated from the Hanging Wall of Normal Fault:A Case in Fen-Wei Basin,China

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Journal of Earth Science 2022年第2期33卷 482-492页

作者： Zhijie Jia Jianbing Peng Quanzhong Lu Jianwei Qiao Feiyong Wang Mingdong Zang Yang Liu junyan zhao Fengji Zhu School of Geological Engineering and Geomatics Chang an UniversityXi'an 710054China Key Laboratory of Western Mineral Resources and Geological Engineering Ministry of Education Chang'an UniversityXfan 710064China China JK Institute of Engineering and Design Xfan 710043China Shaanxi Key Laboratory for the Property and Treatment of Special Soil and Rock Xfan 710043China School of Engineering and Technology China University of GeosciencesBeijing 100083China

This paper takes Fen-Wei Basin(FWB)as a case to study the ground fissures controlled by normal *** on the field investigation,geophysical exploration,drilling,GNSS data and numerical calculation,the characteristics and mechanism of ground fissures originated from the hanging wall of normal faults are *** results show that the distribution of ground fissures in the hanging wall and heading wall of the active faults is not *** fissures are mostly distributed in the hanging wall of active faults and show a linear distribution on the surface,their strike is consistent with the fault,mainly characterized by vertical offset and horizontal *** fissures destroy the farmland and building foundation through which they pass and cause the rupture or *** profile section,the ground fissure shows the characteristics of normal faults and dislocates the strata,and is connected with the underlying *** analysis shows that the vertical displacement of normal fault activity in hanging wall is much larger than that in heading wall,which is the reason that tectonic ground fissures mainly originate from hanging *** range of dangerous area of ground fissures is controlled by the depth of fault,the strength of the ground fissures disaster is mainly controlled by the activity of *** formation of the ground fissures originated from the hanging wall of the fault experienced three stages:the main fault activity stage,the secondary fault activity stage and the fissure formation stage.

关键词： ground fissure Fen-Wei Basin active fault dislocation theory formation mechanism hazards engineering geology

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A Comprehensive Method for the Risk Assessment of Ground Fissures:Case Study of the Eastern Weihe Basin

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Journal of Earth Science 2023年第6期34卷 1892-1907页

作者： Zhijie Jia Jianbing Peng Quanzhong Lu Penghui Ma Jianwei Qiao Feiyong Wang Mingdong Zang Yang Liu junyan zhao Fengji Zhu School of Geological Engineering and Geomatics Chang'an UniversityXi'an 710054China Key Laboratory of Western Mineral Resources and Geological Engineering Ministry of Education Chang'an UniversityXi'an 710064China China JK Institute of Engineering and Design Xian 710043China School of Engineering and Technology China University of GeosciencesBeijing 100083China

Ground fissures are influenced by the coupling of geological factors and human *** threaten the safety of infrastructure and restrict town planning in many areas in *** of the area most severely affected by ground fissures is the Weihe Basin in North China,which has the most extensive distribution of ground fissures and all the elements that control their occurrence,pro-viding an ideal study area for the study of ground *** this study,we took the eastern Weihe Ba-sin as the study area and determined the distribution and hazard characteristics of ground fissures via field *** on the analytic hierarchy process,we propose a multi-level,comprehensive method for evaluating the hazards of ground *** method considers the geological back-ground,development status,and triggering factors of ground fissures,including all nine currently known assessment indices of ground *** used judgment matrices to rank the constructed ground fissure assessment index system at the single and total levels and quantified the nine assessment indices of ground fissures according to the field survey ***,we plotted the ground fissure risk zoning map and evaluated the ground fissure risk at the study *** findings indicated that the proposed method could facilitate ground fissure hazard assessment and prediction and provide support for hazard prevention and urban/rural planning.

关键词： ground fissure analytic hierarchy process hazards risk assessment hazard prevention

单位方体上沿曲面的振荡积分在Sobolev空间上的有界性

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数学年刊（A辑） 2017年第4期38卷 405-418页

作者：赵俊燕浙江大学数学系杭州310027 浙江师范大学数学系浙江金华321004

研究了欧氏空间R^2中单位方体Q^2=[0,1]~2上沿曲面(t,s,γ(t,s))的振荡奇异积分算子T_(α,β)f(u,v,x)=∫_(Q^2)f(u-t,v-s,x-γ(t,s))e^(it^(-β_1)s^(-β_2))t^(-1-α_1)s^(-1-α_2)dtds从Sobolev空间L_τ~p(R^(2+n))到L^p(R^(2+n))中的有界性,其中x∈R^n,(u,v)∈R^2,(t,s,γ(t,s))=(t,s,t^(P_1)s^(q_1),t^(p_2)s^(q_2),…,t^(p_n)s^(q_n))为R^(2+n)上一个曲面,且β_1>α_1≥0,β_2>α_2>0.这些结果推广和改进了R^3上的某些已知的结果.作为应用,得到了乘积空间上粗糖核奇异积分算子的Sobolev有界性.

关键词：超奇异振荡积分算子曲面多参数单位方体

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儿童运动认知的朴素理论

心理科学进展 2007年第1期15卷 94-100页

作者：赵军燕俞国良中国科学院心理研究所心理健康重点实验室北京100101 中国人民大学心理研究所北京100872

主要介绍了关于运动的朴素理论中儿童具有的两类知识系统,一是儿童在日常运动中能够描述出来的朴素信念即外显的概念知识,另一是儿童和运动的物体发生相互作用时所具有的知识即内隐的知识,并进一步阐述了内隐知觉知识和外显概念知识之... 详细信息

主要介绍了关于运动的朴素理论中儿童具有的两类知识系统,一是儿童在日常运动中能够描述出来的朴素信念即外显的概念知识,另一是儿童和运动的物体发生相互作用时所具有的知识即内隐的知识,并进一步阐述了内隐知觉知识和外显概念知识之间具有不可渗透性,内隐运动知识和外显概念知识存在着分离,内隐运动知识可以通过运动表象的方式转化为外显概念知识。提出了有待进一步探讨的问题:错误信念是否具有任务特殊性,内隐知觉知识和内隐运动知识之间关系等。

关键词：朴素理论外显概念知识冲力信念表征动量内隐运动知识

日本公共图书馆应对少子化问题的社会服务策略及思考

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图书馆学研究 2024年第9期 130-136,F0003页

作者：赵珺 于准黑龙江大学信息管理学院黑龙江大学信息管理学院图书馆学系

作为公共文化服务机构,公共图书馆有着自身的社会与文化使命,和以人为本的服务思想。面对少子化的社会问题,日本公共图书馆在男女婚恋、家庭育儿、助力主妇回归社会等方面开展了一系列服务活动,为解决此类社会问题作出了极大的努力。考... 详细信息

作为公共文化服务机构,公共图书馆有着自身的社会与文化使命,和以人为本的服务思想。面对少子化的社会问题,日本公共图书馆在男女婚恋、家庭育儿、助力主妇回归社会等方面开展了一系列服务活动,为解决此类社会问题作出了极大的努力。考察少子化环境下日本公共图书馆开展的特色社会服务以及发挥的社会作用,探寻我国同等社会情形下图书馆应采取的服务策略,以期对我国公共图书馆的相关服务提供借鉴。

关键词：少子化公共图书馆日本图书馆图书馆服务社会服务

广义多变量平均算子及其组合算子的几乎处处收敛速度

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数学进展 2022年第3期51卷 498-516页

作者：赵俊燕浙江师范大学数学与计算机科学学院金华浙江321004

本文给出了广义多变量平均算子及其组合算子在欧氏空间R^(n)上Sobolev型空间的几乎处处收敛速度并得到了收敛的饱和度.作为应用,利用转移定理将相关结果推广到了n维环面T^(n)上.

关键词：广义多变量平均算子及其组合算子几乎处处收敛速度逼近饱和度 Sobolev型H^(p)空间 Fourier级数