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Size distribution of PM_(20) observed to the north of the Tibetan Plateau

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Journal of Mountain Science 2021年第2期18卷 367-376页

作者： zhou cheng-long YANG Fan HUO Wen MAMTIMIN Ali YANG Xing-hua Institute of Desert Meteorology China Meteorological AdministrationUrumqi 830002China Taklimakan Desert Meteorology Field Experiment Station China Meteorological AdministrationUrumqi 830002China

The size distribution of airborne dust particles is an important parameter in the measurement of dust emissions due to wind erosion,and a quantitative and accurate description is *** regarding the size distribution of airborne dust particles are currently lacking in Tibetan Plateau(TP).This study aims to obtain a dust particle size distribution and compare the difference in spatial distribution at a field site(FS)and two urban observation sites(Minfeng and Hetian),in the north of the TP,under the condition of the dust-days and *** observation data was collected from 5 July to 4 August,*** mass concentration of dust(PM20)was measured with a 10-stage quartz crystal microbalance cascade *** results suggested that 91.9%of the particles were less than 1.4μm on clear-days,and particles of d≥1.4μm increased to 27.2%with the occurrence of the dust *** than 80%of the airborne dust particles were less than 1.4μm for each friction *** proportion of d0.7μm was the greatest at 0.5 m on *** urban observation,with the occurrence of dust events,the concentration of a particle size greater than 2.5μm increased most significantly in Minfeng,while the concentration of a particle size less than 0.7μm increased most significantly in ***,the proportion of particles with d1.4μm had the most obvious difference among these three sites.

关键词： Dust day Clear day Friction velocity Field Urban Coefficient variation

高速公路192 m高墩施工自动化测量控制技术

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工程建设与设计 2024年第5期 165-167页

作者：梁海朋崔成男周成龙刘晓东中建铁路投资建设集团有限公司北京100088

结合重庆渝湘高速公路复线项目中芦沟河特大桥192 m高墩自动化测量工程,对高墩测量过程自动化控制技术进行研究,介绍自动化测量控制系统的组成,详细阐述平面位置自动化测量控制流程、工艺及竖直度自动化测量控制工艺,并结合工程实际提... 详细信息

结合重庆渝湘高速公路复线项目中芦沟河特大桥192 m高墩自动化测量工程,对高墩测量过程自动化控制技术进行研究,介绍自动化测量控制系统的组成,详细阐述平面位置自动化测量控制流程、工艺及竖直度自动化测量控制工艺,并结合工程实际提出相应的注意事项。

关键词：高速公路蓝牙连接平面位置竖直度自动化测量

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基于两层分解和极限学习机的河流水质预测

计算机仿真 2024年第6期41卷 536-543,582页

作者：陈一帆李泽周成龙胡悦苏州科技大学电子与信息工程学院江苏苏州215009

针对城市河流水质中的化学需氧量和高锰酸盐指数无法有效预测的问题,提出一种基于两层分解方法和极限学习机的河流水质预测方法。引入改进的自适应噪声完备集合经验模态分解(improved complete ensemble EMD,ICEEMDAN)分解原始水质时间... 详细信息

针对城市河流水质中的化学需氧量和高锰酸盐指数无法有效预测的问题,提出一种基于两层分解方法和极限学习机的河流水质预测方法。引入改进的自适应噪声完备集合经验模态分解(improved complete ensemble EMD,ICEEMDAN)分解原始水质时间序列,分频处理子分量为高频分量和低频分量,加入变分模态分解(variational mode decomposition, VMD)对高频分量进行二次分解,建立关于所有分量的极限学习机(extreme learning machine, ELM)和最小二乘支持向量机(least square support vector machine, LSSVM)预测模型,将各分量预测值线性相加得到最终的预测结果。以苏州市水道的水质数据集作为样本进行实验,上述方法得出化学需氧量和高锰酸盐指数的平均绝对误差(mean absolute error, MAE)、均方根误差(root mean square error, RMSE)和平均绝对百分比误差(mean absolute percentage error, MAPE)分别为0.076、0.158、2.674%和0.182、0.193、0.673%,在识别和分析关键水质参数方面的稳健性优于其它对比模型,克服了集合经验模态分解(ensemble empirical mode decomposition, EEMD)重构过程中出现的模态混叠问题,特别是在高频分量情况下,能够做到预测更加有效。

关键词：河流水质预测改进的自适应噪声完备集合经验模态分解变分模态分解极限学习机分频处理

Microstructure,wear and friction behavior of CoCrAITaY-xCNTs composite coatings deposited by laser-induction hybrid cladding

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Rare Metals 2024年第4期43卷 1815-1827页

作者： Sheng-Feng zhou Yu long Yan-Liang Yi cheng Deng Lian-Xi Hu Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou510632China Wuhan National Laboratory for Optoelectronics(WNLO) Huazhong University of Science and TechnologyWuhan430074China MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured MaterialsGuangxi UniversityNanning530004China School of Mechatronics Engineering Guangdong Polytechnic Normal UniversityGuangzhou510635China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China

To improve the wear performance of CoCrAlYTa coating,part of the carbon nanotubes(CNTs)chemically reacted with Ta to form reinforcement phase(TaC),while the other CNTs were retained as lubrication ***,the CoCrAlYTa-xCNTs(x=0,1,2,and 4;wt%)composite coatings were prepared by laserinduction hybrid cladding(LIHC),and the microstructure and wear resistance of coatings were systematically *** show that the coatings are mainly composed of TaC,y-(Co,Cr)andβ-(Co,Cr)*** the CNTs content increases from 0 wt%to 4 wt%,the volume fraction of TaC increases from 13.11 vol%to 16.12 vol%.Meanwhile,the nano-hardness ofγ-(Co,Cr)andβ-(Co,Cr)Al are improved from 7.49 and 9.72 to 9.36 and 11.19 GPa,*** a result,the microhardness of coating increases from HV536.25 to HV 738.16,the wear rate decreases from32.4×10^(-3)to 6.1×10^(-3)mg·m^(-1),and the average friction coefficient decreases from 0.55 to *** good wear performance of the coating is attributed to the formation of TaC and the existence of remained CNTs lubricant film.

关键词： Carbon nanotube MCrAlY coating Friction and wear performance Laser-induction hybrid cladding

Highly Aromatic Norditerpenoid Heterodimers and Monomers from Trigonostemon fragilis

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Engineering 2024年第7期38卷 144-154页

作者： Jun-Su zhou long cheng Yuan Gao Zhan-Peng Ge Bin zhou Jing-Ya Li Jin-Xin Zhao Jian-Min Yue State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Shandong Laboratory of Yantai Drug Discovery Bohai Rim Advanced Research Institute for Drug DiscoveryYantai 264117China

Four new norditerpenoid heterodimers with different dimerization patterns-namely,trigofragiloids A-C(denoted as compounds 1-3)and(+)-and(-)-trigofragiloid D(compound 4)-and three new phenanthrenone norditerpenoids-namely,trigofragiloids E-G(compounds 5-7)-were isolated from Trigonostemon *** 1 and 2 feature a novel heterodimeric carbon skeleton formed by the conjugation of a tetra-norditerpenoid and an ennea-norditerpenoid;they have been identified as class 2 atropisomers by means of quantum chemical *** 3 is an unprecedented phenylpropanoid-norditerpenoid adduct with a new dimerization ***(+)-and(-)-4 are the first example of S-shaped 1,4-dioxane-fused norditerpenoid *** by the structure elucidation of compound 4,two co-occurring analogues,actephilol A and epiactephilol A,were structurally revised as a pair of geometrical isomers and were identified as two pairs of enantiomers,(+)-and(-)-8 and(+)-and(-)-9,*** structures were characterized using a combined ***,compound 7 exhibits remarkable adenosine triphosphate-citrate lyase(ACLY)inhibition with a halfmaximal inhibition concentration(IC50)value of(0.46±0.11)lmol·L^(-1),as active as the positive control BMS-303141,and a molecular docking study offers deep insight into the interaction between compound 7 and ACLY.

关键词： Norditerpenoid heterodimer Trigonostemon fragilis Euphorbiaceae Trigofragiloid Structural revision Adenosine triphosphate-citrate lyase(ACLY) inhibitory activity

Multi-omics analysis to identify CBR3-AS1-hsa-miR-145-5p-MAP3K5 pathway as a ferroptosis-related ceRNA network in benign prostatic hyperplasia

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Genes & Diseases 2024年第5期11卷 105-108页

作者： Liang zhou Youyou Li Jiaren Li Hanyu Yao Jin Huang cheng Li long Wang Department of Urology The Third Xiangya Hospital of Central South UniversityChangshaHunan 410013China

In aging males,benign prostatic hyperplasia(BPH)is a chronic pathological process that primarily causes lower urinary tract *** to histopathology,BPH is caused by an imbalance between cell death and proliferation.1 However,the exact pathophysiology remains *** is a newly discovered form of programmed cell *** cell morphology is characterized primarily by the reduction or disappearance of mitochondrial cristae and mitochondrial shrinkage.2,3 Competing endogenous RNAs(ceRNAs)are important regulators of many biological processes and have been involved in various diseases.

关键词： prostatic endogenous BPH

Generalized Inverses and Units in a Unitary Ring

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Acta Mathematica Sinica,English Series 2024年第4期40卷 1000-1014页

作者： Yu Kun zhou Jian long CHEN School of Mathematics Southeast UniversityNanjing 210096P.R.China

Let R be a unitary ring and a,b∈R with ab=*** find the 2/3 property of Drazin invertibility:if any two of a,b and a+b are Drazin invertible,then so is the third ***,we combine the 2/3 property of Drazin invertibility to characterize the existence of generalized inverses by means of *** applications,the need for two invertible morphisms used by You and Chen to characterize the group invertibility of a sum of morphisms is reduced to that for one invertible morphism,and the existence and expression of the inverse along a product of two regular elements are obtained,which generalizes the main result of Mary and Patricio(2016)about the group inverse of a product.

关键词： Leftπ-regular element stronglyπ-regular element group inverse Drazin inverse inverse along an element

An Environment‑Tolerant Ion‑Conducting Double‑Network Composite Hydrogel for High‑Performance Flexible Electronic Devices

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Nano-Micro Letters 2024年第5期16卷 352-369页

作者： Wenchao Zhao Haifeng zhou Wenkang Li Manlin Chen Min zhou long Zhao State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China

High-performance ion-conducting hydrogels(ICHs)are vital for developing flexible electronic ***,the robustness and ion-conducting behavior of ICHs deteriorate at extreme tempera-tures,hampering their use in soft *** resolve these issues,a method involving freeze–thawing and ionizing radiation technology is reported herein for synthesizing a novel double-network(DN)ICH based on a poly(ionic liquid)/MXene/poly(vinyl alcohol)(PMP DN ICH)*** well-designed ICH exhibits outstanding ionic conductivity(63.89 mS cm^(-1) at 25℃),excellent temperature resistance(-60–80℃),prolonged stability(30 d at ambient temperature),high oxidation resist-ance,remarkable antibacterial activity,decent mechanical performance,and ***,the ICH performs effectively in a flexible wireless strain sensor,thermal sensor,all-solid-state supercapacitor,and single-electrode triboelectric nanogenerator,thereby highlighting its viability in constructing soft electronic *** highly integrated gel structure endows these flexible electronic devices with stable,reliable signal output *** particular,the all-solid-state supercapacitor containing the PMP DN ICH electrolyte exhibits a high areal specific capacitance of 253.38 mF cm^(-2)(current density,1 mA cm^(-2))and excellent environmental *** study paves the way for the design and fabrication of high-performance mul-tifunctional/flexible ICHs for wearable sensing,energy-storage,and energy-harvesting applications.

关键词： Ionic liquids Double-network hydrogels Temperature tolerance Multifunctionality Flexible electronic devices

PARP1-DNA co-condensation:the driver of broken DNA repair

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2351-2353页

作者： Xiang Wei Fangfang zhou long Zhang Life Sciences Institute The Second Affiliated Hospital of the Zhejiang University School of MedicineThe MOE Key Laboratory of Biosystems Homeostasis&Protection and Zhejiang Provincial Key Laboratory for Cancer Molecular Cell BiologyZhejiang UniversityHangzhouChina The First Affiliated Hospital the Institutes of Biology and Medical SciencesSuzhou Medical CollegeSoochow UniversitySuzhouJiangsu 215123China

A recent study published by Simon Alberti1 in Cell has revealed that DNA double-strand break(DSB)sites that prevent the disjunction of broken DNA ends are formed through poly(ADPribose)(PAR)polymerase 1(PARP1)-DNA co-condensation.1(Fig.1).Here,a comprehensive and novel model was provided for the ordered assembly of PARP1-DNA condensates,which can rationally make clear broken DNA end synapses and how repair effectors are recruited to repair DSB.

关键词： PARP1 repair rational