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基于抽样可靠性的颗分试验取样数量研究

岩土工程学报 2016年第11期38卷 2122-2127页

作者：李希张升盛岱超马新岩中南大学土木工程学院湖南长沙410075 高速铁路建造技术国家工程实验室湖南长沙410075 中国民航机场建设集团公司北京100101

在确定工程现场粗粒料颗粒级配过程中,所取试样量大小是保证所得结果准确性及可靠性的决定性因素之一。结合抽样分析可靠性理论,提出了一种为确定粗粒料整体颗粒级配情况所需试样量的方法,发现颗粒总体含量、颗粒间尺寸差异性大小、精... 详细信息

在确定工程现场粗粒料颗粒级配过程中,所取试样量大小是保证所得结果准确性及可靠性的决定性因素之一。结合抽样分析可靠性理论,提出了一种为确定粗粒料整体颗粒级配情况所需试样量的方法,发现颗粒总体含量、颗粒间尺寸差异性大小、精度要求是决定抽样量的3个因素。通过开展筛分试验,验证了方法的合理性,并将其应用于具体工程实践。所得结果可以为相关工程实践及规范的发展和完善提供参考。

关键词：抽样分析颗粒级配样本规模颗粒分析试验可靠性

A Multi-Objective Particle Swarm Optimization Algorithm Based on Decomposition and Multi-Selection Strategy

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Computers, Materials & Continua 2025年第1期82卷 997-1026页

作者： Li Ma Cai dai xingsi Xue Cheng Peng School of Computer Science Shaanxi Normal UniversityXi’an710119China Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of TechnologyFuzhou350118China Information Construction and Management Center and Institute of Artificial Intelligence and Educational New Productivity Ningxia Normal UniversityGuyuan756099China

The multi-objective particle swarm optimization algorithm(MOPSO)is widely used to solve multi-objective optimization *** the article,amulti-objective particle swarm optimization algorithmbased on decomposition and multi-selection strategy is proposed to improve the search ***,two update strategies based on decomposition are used to update the evolving population and external archive,***,a multiselection strategy is *** first strategy is for the subspace without a non-dominated *** the neighbor particles,the particle with the smallest penalty-based boundary intersection value is selected as the global optimal solution and the particle far away fromthe search particle and the global optimal solution is selected as the personal optimal solution to enhance global *** second strategy is for the subspace with a non-dominated *** the neighbor particles,two particles are randomly selected,one as the global optimal solution and the other as the personal optimal solution,to enhance local *** third strategy is for Pareto optimal front(PF)discontinuity,which is identified by the cumulative number of iterations of the subspace without non-dominated *** the subsequent iteration,a new probability distribution is used to select from the remaining subspaces to ***,an adaptive inertia weight update strategy based on the dominated degree is designed to further improve the search ***,the proposed algorithmis compared with fivemulti-objective particle swarm optimization algorithms and five multi-objective evolutionary algorithms on 22 test *** results show that the proposed algorithm has better performance.

关键词： Multi-objective optimization multi-objective particle swarm optimization decomposition multi-selection strategy

Facile synthesis of the dodecahydridododecaborate (B12H122-) from borane Lewis base adducts

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Science China Chemistry 2025年

作者： Yi Jing xin-Ran Liu xing-Hua Wang Hui Han Sha-Sha Liang xi-Meng Chen Dong-Hui Wei Lai-sheng Wang Xue-Nian Chen College of Chemistry Zhengzhou University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced MaterialsHenan Normal University Department of Chemistry Brown University

Polyhedral boranes are a class of well-known boron molecular clusters widely used in energy,chemistry,medicine,and materials science because of their unique physical and chemical *** efforts have been made in the past decades to find more effective synthetic methods for this important class of boron ***,existing synthetic methods suffer from low efficiency and low ***,we report a facile one-pot synthesis of[（CH3）3S]2B12H12with moderate yields at mild *** mechanisms for the multi-step chemoselective synthesis of B12H122-without other by-products are elucidated based on theoretical results and our previous *** Lewis base used in B–H bond condensation reaction,which acts as a hydrogen or to balance the newly generated polyhedral borane charges,is proposed and studied in *** current study has led to a more effective and selective synthetic method for B12H122-and has also implicated the syntheses of other new polyhedral boranes.

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Universal order-parameter and quantum phase transition for two-dimensional q-state quantum Potts model

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Chinese Physics B 2022年第7期31卷 163-168页

作者： Yan-Wei dai sheng-Hao Li xi-Hao Chen Centre for Modern Physics and Department of Physics Chongqing UniversityChongqing 400044China Chongqing Vocational Institute of Engineering Chongqing 402260China Research Institute for New Materials and Technology Chongqing University of Arts and SciencesChongqing 400000China

We investigate quantum phase transitions for q-state quantum Potts models(q=2,3,4)on a square lattice and for the Ising model on a honeycomb lattice by using the infinite projected entangled-pair state algorithm with a simplified updating *** extend the universal order parameter to a two-dimensional lattice system,which allows us to explore quantum phase transitions with symmetry-broken order for any translation-invariant quantum lattice system of the symmetry group *** universal order parameter is zero in the symmetric phase,and it ranges from zero to unity in the symmetry-broken *** ground-state fidelity per lattice site is computed,and a pinch point is identified on the fidelity surface near the critical *** results offer another example highlighting the connection between(i)critical points for a quantum many-body system undergoing a quantum phase-transition and(ii)pinch points on a fidelity *** addition,we discuss three quantum coherence measures:the quantum Jensen–Shannon divergence,the relative entropy of coherence,and the l1norm of coherence,which are singular at the critical point,thereby identifying quantum phase transitions.

关键词： quantum phase transitions universal order parameter fidelity

Two new cytotoxic sesquiterpenoids from Solanum lyratum

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Chinese Chemical Letters 2013年第11期24卷 1030-1032页

作者： Gui-sheng Li Fang Yao Lei Zhang xi-Dian Yue sheng-Jun dai School of Pharmaceutical Science Yantai University

Two new sesquiterpenoids,attributable to eudesmane-type（1 and 2,named solajiangxins F and G）,were isolated from the whole plant of Solanum *** structures were elucidated on the basis of integrated spectroscopic *** vitro,compounds 1 and 2 were found to show signifcant cytotoxic activity against selected cancer cells,including P-388,HONE-1 and HT-29.

关键词： Solanum lyratum Solanaceae Sesquiterpenoid Solajiangxins F–G Cytotoxic activity

Differential transform method for solving Richards' equation

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Applied Mathematics and Mechanics(English Edition) 2016年第2期37卷 169-180页

作者： xi CHEN Ying dai School of Aerospace Engineering and Applied Mechanics Tongji University

An approximate solution to Richards＇ equation is presented, mathematically describing a sort of unsaturated single phase fluid flow in porous media. The approach is a differential transform method （DTM） with interm... 详细信息

关键词： approximate analytical solution Richavds' equation differential transform method (DTM) intermediate variable

Peficitinib suppresses diffuse-type tenosynovial giant cell tumor by targeting TYK2 and JAK/STAT signaling

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Science China Life Sciences 2025年

作者： Shan Lu Chenxi Cao Wenjia Zhang Jiayi Li Jingli Yang Zisheng Huang Zhijun Wu Baitao Liu Hongjie Huang Haijun Wang Yongjian Wang Dingge Liu Zhihua Zhang Kaiping Liu Gang Yang xi Gong Hui dai Yingjia Li Erdan Dong xin Zhang Yan Zhang Haihe Laboratory of Cell Ecosystem Institute of Cardiovascular Diseases The First Affiliated Hospital of Dalian Medical University Institute of Cardiovascular Sciences School of Basic Medical Sciences Peking University Health Science Center Department of Cardiology and Institute of Vascular Medicine Peking University Third HospitalState Key Laboratory of Vascular Homeostasis and Remodeling Peking University Department of Sports Medicine Peking University Third Hospital Institute of Sports Medicine of Peking University Beijing Key Laboratory of Sports Injuries Engineering Research Center of Sports Trauma Treatment Technology and Devices Ministry of Education State Key Laboratory of Membrane Biology Institute of Molecular Medicine College of Future Technology Peking University Peking University Health Science Centre Peking University Department of Immunology School of Basic Medical Sciences NHC Key Laboratory of Medical Immunology Peking University Research Center for Cardiopulmonary Rehabilitation University of Health and Rehabilitation Sciences Qingdao Hospital (Qingdao Municipal Hospital) School of Health and Life Sciences University of Health and Rehabilitation Sciences Research Unit of Medical Science Research Management/Basic and Clinical Research of Metabolic Cardiovascular Diseases Chinese Academy of Medical Sciences

Diffuse-type tenosynovial giant cell tumor(dTGCT) is a destructive but rare benign proliferative synovial neoplasm. Although surgery is currently the main treatment modality for dTGCT, the recurrence risk is up to 50%. Therefore, there is a great need for effective drugs against dTGCT with minor side effects. The Janus kinase(JAK)/signal transducer and activator of transcription(STAT) signaling plays a central role in rheumatoid arthritis(RA), a disease with similar characteristics as dTGCT, but its function in dTGCT remains *** fibroblast-like synoviocytes(FLS) and macrophages were isolated from 10 synovial tissue samples from dTGCT patients for the screening and validation of the five clinically approved JAK inhibitors to treat RA against dTGCT. Cell viability, cell death, inflammation and the activity of the JAK family members of cultured dTGCT FLS(both 2-D and 3-D) and macrophages were investigated for the efficacy of the JAK inhibitors. Here, we found that similar to RA, JAK/STAT signaling was markedly activated in the dTGCT synovium. Of the 5 JAK inhibitors, peficitinib was shown to have the most potency in addressing some of the pathological responses of dTGCT FLS and *** potency of peficitinib was much higher than pexidartinib, which is the only FDA-approved drug for dTGCT. Mechanistically, peficitinib inhibited tyrosine kinase 2(TYK2), a JAK family member necessary for the pathological progression of dTGCT FLS and macrophages. In summary, we not only revealed JAK/STAT(especially TYK2) signaling as the major mechanism underlying dTGCT, but also identified peficitinib as a promising drug against dTGCT.

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Acceleration of the Stochastic Analytic Continuation Method via an Orthogonal Polynomial Representation of the Spectral Function

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Chinese Physics Letters 2013年第9期30卷 1-4页

作者： WU Quan-sheng WANG Yi-Lin FANG Zhong dai xi Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190

Stochastic analytic continuation is an excellent numerical method for analytically continuing Green’s functions from imaginary frequencies to real frequencies,although it requires significantly more computational time than the traditional MaxEnt *** develop an alternate implementation of stochastic analytic continuation which expands the dimensionless field𝑜n(x)introduced by Beach using orthogonal *** use the kernel polynomial method(KPM)to control the Gibbs oscillations associated with truncation of the expansion in orthogonal *** KPM variant of stochastic analytic continuation delivers improved precision at a significantly reduced computational cost.

关键词： continuation analytic stochastic

Spin waves in the block checkerboard antiferromagnetic phase

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Chinese Physics B 2012年第2期21卷 509-520页

作者： Lu Feng dai xi Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Motivated by the discovery of a new family of 122 iron-based superconductors, we present the theoretical results on the ground state phase diagram, spin wave, and dynamic structure factor obtained from the extended J1-J2 Heisenberg model. In the reasonable physical parameter region of K2Fe4Se5, we find that the block checkerboard antiferromagnetic order phase is stable. There are two acoustic spin wave branches and six optical spin wave branches in the block checker- board antiferromagnetic phase, which have analytic expressions at the high-symmetry points. To further compare the experimental data on neutron scattering, we investigate the saddlepoint structure of the magnetic excitation spectrum and the inelastic neutron scattering pattern based on linear spin wave theory.

关键词： spin wave phase diagram superconductivity