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Commensal microbiota and host metabolic divergence are associated with the adaptation of Diploderma vela to spatially heterogeneous environments

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Integrative Zoology 2022年第3期17卷 346-365页

作者： Wei zhu Xiudong SHI Yin QI Xiaoyi WANG Liming CHANG Chunlin ZHAO lifeng zhu Jianping JIANG CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChengduChina College of Life Sciences Nanjing Normal UniversityNanjingChina University of Chinese Academy of Sciences BeijingChina Mangkang Ecological Station Tibet Ecological Safety Monitor NetworkChengduChina

Heterogeneous environment adaptation is critical to understand the species evolution and response to climate change.However,how narrow-range species adapt to micro-geographic heterogeneity has been overlooked,and there is a lack of insights from metabolism and commensal microbiota.Here,we studied the environmental adaptation for 3 geographic populations(>40 km apart)of Diploderma vela,a lizard endemic to dry-hot valleys of the Hengduan Mountain Region.The climatic boundary caused a cooler,droughtier,and barren environment for northernmost population(RM)than the middle(QZK)and southernmost populations(FS).Correspondingly,significant divergences in liver and muscle metabolism and commensal microbiota were detected between RM and QZK or FS individuals,but not between QZK and FS individuals.Phospholipid composition,coenzyme level(i.***.pyridoxal and NAD^(+)),and cholesterol metabolism(e.***.androgen and estriol synthesis)constituted the major metabolic difference between RM and QZK/FS groups.FS and QZK individuals kept abundant Proteobacteria and antifungal strains,while RM individuals maintained more Firmicutes and Bacteroidota.Strong associations existed between varied host metabolite and gut microbes.How were these interpopulation variations associated to the environment adaptation were discussed.These results provided some novel insights into the environmental adaptation and implicated the consequence of climate change on narrow-range species.

关键词： commensal microbiota environmental heterogeneity metabolomics phospholipid steroid hormone temperature

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Large Energy Capacitive High-Entropy Lead-Free Ferroelectrics

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Nano-Micro Letters 2023年第5期15卷 69-82页

作者： Liang Chen Huifen Yu Jie Wu Shiqing Deng Hui Liu lifeng zhu He Qi Jun Chen Beijing Advanced Innovation Center for Materials Genome Engineering Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing 100083People’s Republic of China School of Mathematics and Physics University of Science and Technology BeijingBeijing 100083People’s Republic of China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083People’s Republic of China

Advanced lead-free energy storage ceramics play an indispensable role in next-generation pulse power capacitors market.Here,an ultrahigh energy storage density of~13.8 J cm^(-3)and a large efficiency of~82.4%are achieved in high-entropy lead-free relaxor ferroelectrics by increasing configuration entropy,named high-entropy strategy,realizing nearly ten times growth of energy storage density compared with low-entropy material.Evolution of energy storage performance and domain structure with increasing configuration entropy is systematically revealed for the first time.The achievement of excellent energy storage properties should be attributed to the enhanced random field,decreased nanodomain size,strong multiple local distortions,and improved breakdown field.Furthermore,the excellent frequency and fatigue stability as well as charge/discharge properties with superior thermal stability are also realized.The significantly enhanced comprehensive energy storage performance by increasing configuration entropy demonstrates that high entropy is an effective but convenient strategy to design new high-performance dielectrics,promoting the development of advanced capacitors.

关键词： High-entropy Energy storage Lead-free Relaxor ferroelectrics Capacitors

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Invasion and defense of the basic social unit in a nonhuman primate society leads to sexual differences in the gut microbiome

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Integrative Zoology 2022年第1期17卷 168-180页

作者： Wancai XIA Mei ZHAO Dali WANG Fan WANG Hua CHEN Guoqi LIU lifeng zhu Dayong LI Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) China West Normal UniversityNanchongSichuanChina Institute of Rare Animals and Plants China West Normal UniversityNanchongSichuanChina College of Life Sciences Nanjing Normal UniversityNanjingChina Mingkef Biotechnology HangzhouChina

Multilevel society is one of the most complex social systems in natural ecosystems and is a typical feature among some primates.Given the potential connection between social behavior and gut microbiome composition,the multilevel social system could affect the primate gut microbiome.Here,based on long-term observation(e.***.social unit dynamics,transfer,and behavior),we investigated this potential integrating 16S rRNA gene amplicon sequencing and behavior data in Yunnan snub-nosed monkeys(Rhinopithecus bieti),which possess a multilevel social group based on one male units(OMUs,each unit with several breeding females and their offspring)and all-male unit(AMU,several bachelor males residing together).We found that the mean unweighted Unifrac distance between adult males from different OMUs was significantly lower than that between adult females from different OMUs(paired Wilcoxon test,P=0.007).There was no significant difference in the mean unweighted Unifrac distance between females within the same OMU or between females from different OMUs.These findings indicated the potential connection between the defense and invasion of social units and the gut microbiome community in wild Yunnan snub-nosed monkeys.We speculated that the resident males of OMUs displaying a significantly higher similarity in the gut microbial community than that of adult females in separate OMUs might be associated with the sexual differences in their interactions and from previously having cohabitated together in the AMU.Therefore,this study suggested that multilevel societies might have an effect on the gut microbial community in this wild nonhuman primate species.

关键词： defense and invasion gut microbial transfer multilevel society sexual differences Yunnan snubnosed monkeys

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A Virtual Puncture Surgery System Based on Multi-Layer Soft Tissue and Force Mesh

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Computers, Materials & Continua 2018年第12期57卷 505-519页

作者： Xiaorui Zhang Jiali Duan lifeng zhu Ladislav Kavan Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science&TechnologyNanjing210044China School of Instrument Science and Engineering Southeast UniversityNanjing210096China School of Computing University of UtahSalt Lake CityUT 84112-9205USA

Puncture is a common operation in surgery,which involves all kinds of tissue materials with different geometry and mechanical properties.As a new cross-disciplinary research area,Virtual Surgery(VS)makes simulation of soft tissue in puncture operation possible in virtual environment.In this paper,we introduce a VS-based puncture system composed by three-layer soft tissue,simulated with spherical harmonic function(SHF),which is covered with a force mesh,constructed by mass spring model(MSM).The two models are combined together with a parameter of SHF named surface radius,which provides MSM with real-time deformation data needed in force calculation.Meanwhile,force calculation,divided into the surface spring force and the puncture damping force,makes the force presentation better accord to the corresponding tissue characteristics.Moreover,a deformation resumption algorithm is leveraged to simulate the resumption phenomenon of the broken tissue surface.In evaluation experiment,several residents are invited to grades our model along with other four mainstream soft tissue models in terms of 7 different indicators.After the evaluation,the scores are analyzed by a comprehensive weighted grading method.Experiment results show that the proposed model has better performance during puncture operation than other models,and can well simulate surface resumption phenomenon when tissue surface is broken.

关键词： Puncture simulation spherical harmonic function mass spring model tissue surface resumption weighted grading evaluation

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Fluid-inspired field representation for risk assessment in road scenes

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Computational Visual Media 2020年第4期6卷 401-415页

作者： Xuanpeng Li lifeng zhu Qifan Xue Dong Wang Yongjie Jessica Zhang School of Instrument Science and Engineering Southeast UniversityNanjing 210096China Department of Mechanical Engineering Carnegie Mellon UniversityPittsburghPA 15213USA

Prediction of the likely evolution of traffic scenes is a challenging task because of high uncertainties from sensing technology and the dynamic environment.It leads to failure of motion planning for intelligent agents like autonomous vehicles.In this paper,we propose a fluid-inspired model to estimate collision risk in road scenes.Multi-object states are detected and tracked,and then a stable fluid model is adopted to construct the risk field.Objects’state spaces are used as the boundary conditions in the simulation of advection and diffusion processes.We have evaluated our approach on the public KITTI dataset;our model can provide predictions in the cases of misdetection and tracking error caused by occlusion.It proves a promising approach for collision risk assessment in road scenes.

关键词： fluid-inspired risk field multi-object tracking road scenes

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A Multi-Conditional Proxy Broadcast Re-Encryption Scheme for Sensor Networks

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Computers, Materials & Continua 2020年第12期65卷 2079-2090页

作者： Pang Li lifeng zhu Brij B.Gupta Sunil Kumar Jha Nanjing Vocational College of Information Technology Nanjing210044China State Key Laboratory of Bioelectronics Jiangsu Key Laboratory of Remote Measurement and ControlSchool of Instrument Science and EngineeringSoutheast UniversityNanjing210096China Department of Computer Engineering National Institute of TechnologyKurukshetra136119India Department of Computer Science and Information Engineering Asia UniversityTaichung41449Taiwan IT Fundamentals and Education Technologies Applications University of Information Technology and Management in RzeszowRzeszow Voivodeship100031Poland

In sensor networks,it is a challenge to ensure the security of data exchange between packet switching nodes holding different private keys.In order to solve this problem,the present study proposes a scheme called multi-conditional proxy broadcast re-encryption(MC-PBRE).The scheme consists of the following roles:the source node,proxy server,and the target node.If the condition is met,the proxy can convert the encrypted data of the source node into data that the target node can directly decrypt.It allows the proxy server to convert the ciphertext of the source node to a new ciphertext of the target node in a different group,while the proxy server does not need to store the key or reveal the plaintext.At the same time,the proxy server cannot obtain any valuable information in the ciphertext.This paper formalizes the concept of MC-PBRE and its security model,and proposes a MC-PBRE scheme of ciphertext security.Finally,the scheme security has been proved in the random oracle.

关键词： Proxy re-encryption sensor network security broadcast re-encryption

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基于三维地质模型的西咸新区地下空间开发适宜性评价

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地质与勘探 2024年第1期60卷 197-206页

作者：李林曾磊董英张戈朱立峰中国地质调查局西安地质调查中心陕西西安710119 自然资源部黄土地质灾害重点实验室陕西西安710119

地下空间开发地质适宜性评价是合理进行地下空间开发、降低开发地质风险的重要手段。传统的评价方法没有考虑地下空间复杂的垂向变化,因而无法满足越来越精确的地下空间规划要求。本文以西咸新区沣东沣西为例,结合该区地质地貌背景、工... 详细信息

地下空间开发地质适宜性评价是合理进行地下空间开发、降低开发地质风险的重要手段。传统的评价方法没有考虑地下空间复杂的垂向变化,因而无法满足越来越精确的地下空间规划要求。本文以西咸新区沣东沣西为例,结合该区地质地貌背景、工程地质特征、水文地质条件、不良地质作用以及地下空间开发现状等特点,建立地下空间开发地质适宜性评价因子体系;利用三维精细化剖分的评估单元为载体,综合使用多种三维空间分析方法从多要素地质模型中定量或定性提取各项指标,运用层次分析法模型开展研究区地下空间开发适宜性评价。评价结果表明:研究区60m以浅地下空间开发利用条件优越,总体适宜开发建设。浅层空间易受文物保护区、地面水体、活动断裂影响,中层空间受城市建成区既有设施及地下构筑物影响较大,深部地下空间主要受断裂影响。该方法能够精细刻画地下空间在垂向上的差异,评估过程与结果能够立体透明化表达,能够定性、定量地为地下空间开发利用提供辅助决策,以达到资源保护优先、协同开发的开发利用格局。

关键词：地下空间开发利用地质适应性评价三维地质模型西咸新区

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Multi-phase structure and electrical properties of Bi_(0.5)Li_(0.5)ZrO_3 doping K_(0.48)Na_(0.56)NbO_3 lead-free piezoelectric ceramics

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Journal of Advanced Ceramics 2018年第1期7卷 79-87页

作者： Xiaoyan PENG Boping ZHANG lifeng zhu Lei ZHAO Ruixiao MA Bo LIU Xiaodong WANG School of Materials Science and Engineering University of Science and Technology Beijing New Metallurgy Hi-Tech Group Co. Ltd. China Iron & Steel Research Institute Group Hebei Key Lab of Optic-Electronic Information and Materials College of Physics Science & Technology Hebei University

(1–x)K_(0.48)Na_(0.56)NbO_3–xBi_(0.5)Li_(0.5)ZrO_3(KNN–x BLZ, x = 0–0.06) lead-free piezoelectric ceramics were prepared by the conventional solid-state sintering method, and their phase structures and electric properties as well as T_C were systematically investigated. The orthorhombic–tetragonal(O–T) two phases were detected in all(1–x)K_(0.48)Na_(0.56)NbO_3–xBi_(0.5)Li_(0.5)ZrO_3 ceramics at 0.01 ≤ x ≤ 0.05. Due to the appropriate ratio between O phase and T phase(CO/C T= 45/55), high piezoelectric properties of d 33= 239 pC/N, k_p= 34%, and P_r = 25.23 μC/cm^2 were obtained at x = 0.04. Moreover, a high T_C = 348 ℃ was also achieved in KNN–x BLZ ceramic at x = 0.04. These results indicate that (1–x)K_(0.48)Na_(0.56)NbO_3–xBi_(0.5)Li_(0.5)ZrO_3 system is a promising candidate for high-temperature piezoelectric devices.

关键词： lead-free piezoelectric ceramics potassium–sodium niobate (KNN) solid-state sintering multi-phase electrical properties

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基于卷积神经网络的胸部CT肺炎辅助筛查系统研发及应用

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中国数字医学 2024年第4期19卷 78-83页

作者：柏志安朱立峰上海交通大学医学院附属瑞金医院上海200025

新型冠状病毒感染疫情发生以来,胸部CT的检测量急速提升,各医院和基层医疗机构都面临着医疗资源不足、诊疗服务能力不足等问题。为了在医学影像领域开展辅助筛查或诊断等医疗信息化研究,众多医疗信息化人员引进计算机视觉等相关技术,打... 详细信息

新型冠状病毒感染疫情发生以来,胸部CT的检测量急速提升,各医院和基层医疗机构都面临着医疗资源不足、诊疗服务能力不足等问题。为了在医学影像领域开展辅助筛查或诊断等医疗信息化研究,众多医疗信息化人员引进计算机视觉等相关技术,打造了胸部CT肺炎辅助筛查系统。以人工智能(AI)胸片智能辅助筛查应用为例,研究了AI辅助诊断在包括新型冠状病毒感染在内的肺炎大流行期间的应用模式和效果。凸显出系统提升临床和放射工作人员影像阅片工作效率的有利性,并结合该AI辅助诊断模型的准确率和应用效率,阐明该类应用定性判断肺炎类型以及定量估计病灶面积的功效。最后结合临床科研实际工作,提出了应用的局限性和未来展望。

关键词：人工智能深度学习辅助筛查 CT 肺炎

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Genome-wide signatures of mammalian skin covering evolution

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Science China(Life Sciences) 2021年第10期64卷 1765-1780页

作者： Peng Cao Qinlong Dai Cao Deng Xiang Zhao Shishan Qin Jian Yang Ran Ju Zhiwen Wang Guoqing Lu Xiaodong Gu Zhisong Yang lifeng zhu Key Laboratory of Drug Targets and Drug Leads for Degenerative Diseases Affiliated Hospital of Integrated Traditional Chinese and Western MedicineNanjing University of Chinese MedicineNanjing 210023China College of Life Sciences Nanjing Normal UniversityNanjing 210046China University of Nebraska at Omaha Omaha 68181USA DNA Stories Bioinformatics Center Chengdu 610021China PubBio-Tech Services Corporation Wuhan 430070China Sichuan Station of Wildlife survey and Management Chengdu 610082China Nanjing Foreign Language School Xianlin Branch Nanjing 210023China Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) China West Normal UniversityNanchong 637002China Shimian Research Center of Giant Panda Small Population Conservation and Rejuvenation Yaan 625400China Liziping Natural Reserve Yaan 625400China

Animal body coverings provide protection and allow for adaptation to environmental pressures such as heat,ultraviolet radiation,water loss,and mechanical forces.Here,using a comparative genomics analysis of 39 mammal species spanning three skin covering types(hairless,scaly and spiny),we found some genes(e.g.,UVRAG,POLH,and XPC)involved in skin inflammation,skin innate immunity,and ultraviolet radiation damage repair were under selection in hairless ocean mammals(e.g.,whales and manatees).These signatures might be associated with a high risk of skin diseases from pathogens and ultraviolet radiation.Moreover,the genomes from three spiny mammal species shared convergent genomic regions(EPHB2,EPHA4,and NIN)and unique positively selected genes(FZD6,INVS,and CDC42)involved in skin cell polarity,which might be related to the development of spines.In scaly mammals,the shared convergent genomic regions(e.g.,FREM2)were associated with the integrity of the skin epithelium and epidermal adhesion.This study identifies potential convergent genomic features among distantly related mammals with the same skin covering type.

关键词： comparative genomics skin coverings spiny mammals hairless mammals scaly mammals convergent evolution

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