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INTERFACIAL BEHAVIOR OF PIPE JOINTS UNDER TORSION LOADS

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Acta Mechanica Solida Sinica 2015年第5期28卷 521-535页

作者： Jun Han Hong Yuan Jiayu Wu moe key lab of Disaster and Control in Engineering Institute of Applied Mechanics Jinan University

The interfacial behavior of pipe joints is studied in this paper. Firstly, through nonlinear fracture mechanics, the analytical expressions of interfacial shear stress and the load- displacement relationship at loaded end of pipe joints under torsion loads are obtained. Thus the shear stress propagation and the debonding process of the whole interface for different bond lengths can be predicted. Secondly, through the analytical solutions, the influences of different bond lengths on the load-displacement curve and the ultimate load are studied. The stress trans- fer mechanism, the interface crack propagation and the ductility behavior of the joints can be explained.

关键词： interface failure mechanism softening debonding torsion pipe joints

Computational evidence of A-to-I RNA editing in nucleus transcriptome of Arabidopsis thaliana

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Frontiers of Electrical and Electronic Engineering in China 2009年第4期4卷 349-361页

作者： Pufeng DU Yang CHEN Yanda LI moe key laboratory of bioinformatics and bioinformatics Division TNLIST/Department of AutomationTsinghua UniversityBeijing 100084China

RNA editing is a mechanism that can increase the complexity of the transcriptome via the insertion,deletion,or substitution of single or multiple nucleotides of mRNA *** the last two decades,A-to-I RNA editing,which is catalyzed by the ADAR family enzymes,was discovered in many metazoans.C-to-U and U-to-C RNA editing were found in the mitochondria and plastids of ***,there is no report about RNA editing in plant nucleus transcriptome ***,by integrating resources from public databases with computational methods,this paper proposes that A-to-I RNA editing mechanism may exist in the nucleus of Arabidopsis *** characteristics of the potential A-to-I RNA editing sites in Arabidopsis thaliana are similar to those we have known in animals.

关键词： RNA editing nucleus Arabidopsis thaliana

Angel: a new large-scale machine learning system

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National Science Review 2018年第2期5卷 216-236页

作者： Jie Jiang Lele Yu Jiawei Jiang Yuhong Liu Bin Cui key lab of High Confidence Software Technologies (moe) School of EECSPeking University

Machine Learning(ML) techniques now are ubiquitous tools to extract structural information from data collections. With the increasing volume of data, large-scale ML applications require an efficient implementation to accelerate the performance. Existing systems parallelize algorithms through either data parallelism or model parallelism. But data parallelism cannot obtain good statistical efficiency due to the conflicting updates to parameters while the performance is damaged by global barriers in model parallel methods. In this paper, we propose a new system, named Angel, to facilitate the development of large-scale ML applications in production environment. By allowing concurrent updates to model across different groups and scheduling the updates in each group, Angel can achieve a good balance between hardware efficiency and statistical efficiency. Besides, Angel reduces the network latency by overlapping the parameter pulling and update computing and also utilizes the sparseness of data to avoid the pulling of unnecessary parameters. We also enhance the usability of Angel by providing a set of efficient tools to integrate with application pipelines and provisioning efficient fault tolerance mechanisms. We conduct extensive experiments to demonstrate the superiority of Angel.

关键词： machine learning distributed system algorithms big data analytics

Bianisotropy Picture of Higher Permeability at Higher Frequencies

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Chinese Physics Letters 2008年第11期25卷 4120-4123页

作者：薛德胜李发伸范小龙温福昇 key lab for Magnetism and Magnetic Materials of moe Lanzhou University Lanzhou 730000

With an effective bianisotropy picture, high-frequency behaviours of different magnetic materials can be reconciled, and the higher permeability and higher resonance frequencies are achieved even in the GHz range. The validity of the bianisotropy picture is quantitatively verified by the in-plane anisotropic Fe34Co55Zr11 thin films. A prolate elliptical precession of the magnetization about its equilibrium direction is the key point, which can be induced by an artificial or an intrinsic bianisotropy system.

关键词： the power-law exponents precipitation durative abrupt precipitation change

Construction and Analysis of Functional Networks in the Gut Microbiome of Type 2 Diabetes Patients

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Genomics, Proteomics & bioinformatics 2016年第5期14卷 314-324页

作者： Lianshuo Li Zicheng Wang Peng He Shining Ma Jie Du Rui Jiang moe key laboratory of bioinformatics and bioinformatics Division TNLIST/Department of Automation Tsinghua University Beijing Anzhen Hospital Capital Medical UniversityBeijing Institute of HeartLungand Blood Vessel Diseases

Although networks of microbial species have been widely used in the analysis of 16S rRNA sequencing data of a microbiome, the construction and analysis of a complete microbial gene network are in general problematic because of the large number of microbial genes in metagenomics studies. To overcome this limitation, we propose to map microbial genes to functional units, including KEGG orthologous groups and the evolutionary genealogy of genes： Non-supervised Orthologous Groups （eggNOG） orthologous groups, to enable the construction and analysis of a microbial functional network. We devised two statistical methods to infer pairwise relationships between microbial functional units based on a deep sequencing dataset of gut microbiome from type 2 diabetes （T2D） patients as well as healthy controls. Networks containing such functional units and their significant interactions were constructed subsequently. We conducted a variety of analyses of global properties, local properties, and functional modules in the resulting functional networks. Our data indicate that besides the observations consistent with the current knowledge, this study provides novel biological insights into the gut microbiome associated with T2D.

关键词： Functional networkMicrobiome Type 2 diabetes Metagenomics Network motif

Identification of cell surface markers for acute myeloid leukemia prognosis based on multi-model analysis

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Journal of Biomedical Research 2024年第4期38卷 397-412页

作者： Jiaqi Tang Lin Luo Bakwatanisa Bosco Ning Li Bin Huang Rongrong Wu Zihan Lin Ming Hong Wenjie Liu Lingxiang Wu Wei Wu Mengyan Zhu Quanzhong Liu Peng Xia Miao Yu Diru Yao Sali Lv Ruohan Zhang Wentao Liu Qianghu Wang Kening Li Department of bioinformatics School of Biomedical Engineering and InformaticsNanjing Medical UniversityNanjingJiangsu 211166China Department of Hematology of the Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University Northern Jiangsu Institute of Clinical MedicineHuai'anJiangsu 223300China Collaborative Innovation Center for Personalized Cancer Medicine Jiangsu Key Lab of Cancer BiomarkersPrevention and TreatmentNanjing Medical UniversityNanjingJiangsu 211166China Department of Hematology the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China key laboratory of Hematology of Nanjing Medical University NanjingJiangsu 210029China Department of Pharmacology School of Basic Medical SciencesNanjing Medical UniversityNanjingJiangsu 211166China The Affiliated Cancer Hospital of Nanjing Medical University Jiangsu Cancer HospitalJiangsu Institute of Cancer ResearchNanjingJiangsu 210002China

Given the extremely high inter-patient heterogeneity of acute myeloid leukemia(AML),the identification of biomarkers for prognostic assessment and therapeutic guidance is *** surface markers(CSMs)have been shown to play an important role in AML leukemogenesis and *** the current study,we evaluated the prognostic potential of all human CSMs in 130 AML patients from The Cancer Genome Atlas(TCGA)based on differential gene expression analysis and univariable Cox proportional hazards regression *** using multi-model analysis,including Adaptive LASSO regression,LASSO regression,and Elastic Net,we constructed a 9-CSMs prognostic model for risk stratification of the AML *** predictive value of the 9-CSMs risk score was further validated at the transcriptome and proteome *** Cox regression analysis showed that the risk score was an independent prognostic factor for the AML *** AML patients with high 9-CSMs risk scores had a shorter overall and event-free survival time than those with low ***,single-cell RNA-sequencing analysis indicated that patients with high 9-CSMs risk scores exhibited chemotherapy ***,PI3K inhibitors were identified as potential treatments for these high-risk *** conclusion,we constructed a 9-CSMs prognostic model that served as an independent prognostic factor for the survival of AML patients and held the potential for guiding drug therapy.

关键词： acute myeloid leukemia cell surface markers prognosis drug sensitivity multi-model analysis

多带笼目超导体CsV_(3)Sb_(5)衍生体系的可调磁通涡旋束缚态

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Science Bulletin 2024年第7期69卷 885-892页

作者：黄子豪韩相和赵振刘锦锦李鹏飞谭恒心王秩伟姚裕贵杨海涛颜丙海蒋坤胡江平汪自强陈辉高鸿钧 Beijing National Center for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081China Beijing key lab of Nanophotonics and Ultrafine Optoelectronic Systems Beijing Institute of TechnologyBeijing 100081China Department of Condensed Matter Physics Weizmann Institute of ScienceRehovot 7610001Israel Hefei National laboratory Hefei 230088China Department of Physics Boston CollegeChestnut Hill MA 02467USA

Vortices and bound states offer an effective means of comprehending the electronic properties of ***,surface-dependent vortex core states have been observed in the newly discovered kagome superconductors CsV_(3)Sb_(5).Although the spatial distribution of the sharp zero energy conductance peak appears similar to Majorana bound states arising from the superconducting Dirac surface states,its origin remains *** this study,we present observations of tunable vortex bound states(VBSs)in two chemically-doped kagome superconductors Cs(V_(1-x)Tr_(x))_(3)Sb_(5)(Tr=Ta or Ti),using low-temperature scanning tunneling microscopy/*** CsV_(3)Sb_(5)-derived kagome superconductors exhibit full-gap-pairing superconductivity accompanied by the absence of long-range charge orders,in contrast to pristine CsV_(3)Sb_(5).Zero-energy conductance maps demonstrate a field-driven continuous reorientation transition of the vortex lattice,suggesting multiband *** Ta-doped CsV_(3)Sb_(5)displays the conventional cross-shaped spatial evolution of Caroli-de Gennes-Matricon bound states,while the Tidoped CsV_(3)Sb_(5)exhibits a sharp,non-split zero-bias conductance peak(ZBCP)that persists over a long distance across the *** spatial evolution of the non-split ZBCP is robust against surface effects and external magnetic field but is related to the doping *** study reveals the tunable VBSs in multiband chemically-doped CsV_(3)Sb_(5)system and offers fresh insights into previously reported Y-shaped ZBCP in a non-quantum-limit condition at the surface of kagome superconductor.

关键词： Kagome superconductor Chemical doping Vortex lattice transition Vortex bound states Majorana bound states

磁有序CoH_(2)SeO_(4)薄片中的室温铁电性

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Science China Materials 2024年第5期67卷 1654-1660页

作者：陈璐秋余冰沈阳刘逸飞王号南冯光迪朱秋香罗卫东刘俊明万建国赵庆彪田博博褚君浩段纯刚 key laboratory of Polar Materials and Devices(moe) Shanghai Center of Brain-inspired Intelligent Materials and Devicesand Department of ElectronicsEast China Normal UniversityShanghai200241China Zhejiang lab Hangzhou310000China laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures Nanjing UniversityNanjing210093China key laboratory of Artificial Structures and Quantum Control School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai200240China School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan430205China State key laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai200083China Institute of Optoelectronics Fudan UniversityShanghai200433China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan030006China

本文通过第一性原理计算和实验表征证明了二维CoH_(2)SeO_(4)薄膜的磁有序和滑移铁电性.首先,实验结果证实了粉末CoH_(2)SeO_(4)样品的反铁磁序.同时,第一性原理计算表明单层CoH_(2)SeO_(4)具有反铁磁(AFM-I)基态(TN≈75 K),且预测了二... 详细信息

本文通过第一性原理计算和实验表征证明了二维CoH_(2)SeO_(4)薄膜的磁有序和滑移铁电性.首先,实验结果证实了粉末CoH_(2)SeO_(4)样品的反铁磁序.同时,第一性原理计算表明单层CoH_(2)SeO_(4)具有反铁磁(AFM-I)基态(TN≈75 K),且预测了二维CoH_(2)SeO_(4)薄膜具有以不对称的三重势阱态为特征的滑移铁电性,并在实验中测得了180°压电滞回线、可反转铁电畴和二次谐波信号.此外,在基于二维CoH_(2)SeO_(4)薄膜的电容器中获得铁电材料所特有的电滞回线和蝴蝶状的电容曲线.介电温谱测试表明二维CoH_(2)SeO_(4)薄膜的铁电转变温度约为370 ***_(2)SeO_(4)中滑移铁电性和反铁磁性的出现为获得低维多铁材料指出了一条新的途径.

关键词： two-dimensional materials sliding ferroelectricity multiferroic materials

Microbial Dark Matter: from Discovery to Applications

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Genomics, Proteomics & bioinformatics 2022年第5期20卷 867-881页

作者： Yuguo Zha Hui Chong Pengshuo Yang Kang Ning moe key laboratory of Molecular Biophysics Hubei Key Laboratory of Bioinformatics and Molecular-imagingCenter of Artificial Intelligence BiologyDepartment of Bioinformatics and Systems BiologyCollege of Life Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074China

With the rapid increase of the microbiome samples and sequencing data,more and more knowledge about microbial communities has been ***,there is still much more to learn about microbial communities,including billions of novel species and genes,as well as countless spatiotemporal dynamic patterns within the microbial communities,which together form the microbial dark *** this work,we summarized the dark matter in microbiome research and reviewed current data mining methods,especially artificial intelligence(AI)methods,for different types of knowledge discovery from microbial dark *** also provided case studies on using AI methods for microbiome data mining and knowledge *** summary,we view microbial dark matter not as a problem to be solved but as an opportunity for AI methods to explore,with the goal of advancing our understanding of microbial communities,as well as developing better solutions to global concerns about human health and the environment.

关键词： Microbiome Dark matter Artificial intelligence Knowledge discovery Application