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高能等离子喷涂垂直裂纹氧化锆热障涂层工艺及结合性能研究

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耐火材料 2024年第4期58卷 284-289页

作者：刘保侠张盟周绪强牛云松黄迪杨沁乾鲍泽斌朱圣龙国家管网集团北方管道有限责任公司河北廊坊065000 北京科技大学新金属材料国家重点实验室北京100083 中国科学院金属研究所师昌绪先进材料创新中心辽宁沈阳110016

为延长氧化钇稳定氧化锆热障涂层的使用寿命,通过高能等离子喷涂设备,以HS188合金为基体,NiCrAlY粉(打底层,d_(50)=106μm)和氧化钇稳定的氧化锆粉(YSZ,d_(50)=50μm)为喷涂料,采用递进式的探索方法,通过调整枪基距(85、95、105和115 mm... 详细信息

为延长氧化钇稳定氧化锆热障涂层的使用寿命,通过高能等离子喷涂设备,以HS188合金为基体,NiCrAlY粉(打底层,d_(50)=106μm)和氧化钇稳定的氧化锆粉(YSZ,d_(50)=50μm)为喷涂料,采用递进式的探索方法,通过调整枪基距(85、95、105和115 mm)和冷却方式(后风冷、后风冷+枪冷、前风冷、前风冷+枪冷)来控制涂层的组织结构,并采用拉拔法评价NiCrAlY+YSZ涂层的结合强度。结果表明:在枪基距较远以及冷却速率较低的情况下,因试样表面瞬热温度较低和激冷不足,涂层难以形成垂直裂纹结构。然而,在瞬热温度达到要求,风冷速率过度的情况下,会出现喷涂颗粒未熔的现象。当枪基距为85 mm,冷却方式为前风冷时,在HS188合金上获得了垂直裂纹形貌的热障陶瓷涂层,同时涂层的垂直裂纹密度适中,结合强度最高,韧性也最好。

关键词：高能等离子喷涂热障涂层 NiCrAlY 氧化锆风冷枪基距

Fucoidan sulfate from Sargassum fusiforme regulates the SARS-CoV-2 receptor AXL expression in human embryonic lung diploid fibroblast cells

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第11期24卷 1047-1052页

作者： xuqiang zhou Weihua JIN Di JIANG Yipeng XU Sanying WANG Xinna WU Yunchuang CHANG Huili SU Tianjun ZHU Xiaogang XU Genxiang MAO College of Life Science Zhejiang Chinese Medical UniversityHangzhou310053China Zhejiang Provincial Key Lab of Geriatrics&Geriatrics Institute of Zhejiang Province Department of GeriatricsZhejiang HospitalHangzhou310030China College of Biotechnology and Bioengineering Zhejiang University of TechnologyHangzhou310014China Zhejiang Cancer Hospital the Key Laboratory of Zhejiang Province for Aptamers and TheranosticsInstitute of Basic Medicine and Cancer(IBMC)Chinese Academy of SciencesHangzhou310022China School of Medicine Zhejiang UniversityHangzhou310058China School of Biological and Chemical Engineering Zhejiang University of Science and TechnologyHangzhou310023China

Coronavirus disease 2019(COVID-19)is a global infectious disease that seriously endangers human life and health and affects normal social *** the pandemic outbreak from December 2019 to February 2023,the total number of confirmed cases has exceeded 753 million,and the deaths caused by COVID-19 have reached 6.6 million(https://***;accessed on Feb.16,2023).

关键词： Sargassum lung cases

Numerical Simulations of the Flow Field around a Cylindrical Lightning Rod

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Structural Durability & Health Monitoring 2024年第1期18卷 19-35页

作者： Wei Guo Yanliang Liu xuqiang Wang Jiazheng Meng Mengqin Hu Bo He State Grid Ningxia Ultra High Voltage Co. Ltd.Yinchuan750000China School of Electrical Engineering Xi’an Jiaotong UniversityXi’an710049China

As an important lightning protection device in substations,lightning rods are susceptible to vibration and potential structural damage under wind *** order to understand their vibration mechanism,it is necessary to conduct flow *** this study,numerical simulations of the flow field around a 330 kV cylindrical lightning rod with different diameters were performed using the SST k-ω*** flow patterns in different segments of the lightning rod at the same reference wind speed(wind speed at a height of 10 m)and the flow patterns in the same segment at different reference wind speeds were *** variations of lift coefficient,drag coefficient,and vorticity distribution were *** results showed that vortex shedding phenomena occurred in all segments of the lightning rod,and the strength of vortex shedding increased with decreasing *** vorticity magnitude and the root mean square magnitudes of the lift coefficient and drag coefficient also increased *** time history curves of the lift coefficient and drag coefficient on the surface of the lightning rod exhibited sinusoidal patterns with a single dominant *** the same segment,as the wind speed increased in a certain range,the root mean square values of the lift coefficient and drag coefficient decreased,while their dominant frequencies ***,there was a proportional relationship between the dominant frequencies of the lift coefficient and drag *** findings of this study can provide valuable insights for the refined design of lightning rods with similar structures.

关键词： Lightning rod flow around circular tubes numerical simulation vortex shedding phenomenon

3-Epi-betulinic acid 3-O-β-D-glucopyranoside(eBAG)induces autophagy by activation of AMP-activated protein kinase in hepatocellular carcinoma

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Food Science and Human Wellness 2024年第3期13卷 1453-1464页

作者： Mengjie Liu xuqiang Liu Kaiyue He Yongping Jian Yujia Li Jinrong Guo Jingyu Yang Zhixiang Xu Wenyi Kang School of Life Sciences Henan UniversityKaifeng 475004China National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Joint International Research Laboratory of Food&Medicine Resource Function Kaifeng 475004China Shenzhen Research Institute of Henan University Shenzhen 518000China

3-Epi-betulinic acid 3-O-β-D-glucopyranoside(eBAG)is a pentacyclic triterpene mainly distributed in food and medicinal plants,which exhibits various pharmacological ***,whether these functions are attributed to eBAG or additional components in these plants remain ***,we report that eBAG exerted an inhibitory activity against hepatocellular carcinoma and esophageal cancer *** induced non-apoptotic cell death in hepatocellular carcinoma *** eBAG-induced cell death was inhibited by knock-down of autophagy related gene(ATG)5 and ATG7,by administration of 3-methyladenine,a selective autophagy inhibitor that suppresses phosphoinositide 3-kinase(PI3K),and by chloroquine,a classic autophagy flux *** demonstrated that eBAG induced an autophagy-mediated cell *** of eBAG mimicked cellular bioenergetics depletion leading to the reduction of intracellular ATP,activation of AMP-activated protein kinase(AMPK),and inhibition of ***-treatment with compound C,an AMPK inhibitor,abrogated cell death induced by *** further validated the anti-tumor effect of eBAG in the murine xenograft model of hepatocellular carcinoma and found that eBAG treatment promoted the induction of autophagy and reduction of tumor growth in *** a functional food ingredient,eBAG is a potential therapeutic agent for the treatment of hepatocellular carcinoma and esophageal cancer.

关键词： eBAG Autophagy ATP AMPK Hepatocellular carcinoma

Synchronous organic-inorganic co-intercalated ammonium vanadate cathode for advanced aqueous zinc-ion batteries

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Journal of Energy Chemistry 2024年第7期94卷 608-617页

作者： Wenpei Kang Bingchen Zhang Zhurui Wang Zhengchunyu Zhang Mang Niu Xuguang An Zhenkai Mou Xiaoyu Fan xuqiang Hu Baojuan Xi Shenglin Xiong School of Materials Science and Engineering China University of Petroleum(East China)Qingdao 266580ShandongChina School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100ShandongChina State Key Laboratory of Bio-fibers and Eco-textiles Institute of Biochemical Engineering College of Materials Science and EngineeringQingdao UniversityQingdao 266071ShandongChina School of Mechanical Engineering Chengdu UniversityChengdu 610106SichuanChina Received 1 February 2024Revised 1 March

Vanadium-based cathode materials are attractive for aqueous zinc-ion batteries(AZIBs)owing to the high capacity from their open frameworks and multiple ***,the cycle stability and rate capability are still restricted by the low electrical conductivity and trapped diffusion ***,we propose an organic-inorganic co-intercalation strategy to regulate the structure of ammonium vanadate(NH_(4)V_(4)O_(10),NVO).The introduction of Al^(3+)and polyaniline(PANI)induces the optimized layered structure and generation of urchin-like hierarchical construction(AP-NVO),based on heterogeneous nucleation and dissolution-recrystallization growth *** to these favorable features,the AP-NVO electrode delivers a desirable discharge capacity of 386 mA h g^(-1) at 1.0 A g^(-1),high-rate capability of 263 mA h g^(-1 )at 5.0 A g^(-1) and excellent cycling stability with 80.4%capacity retention over 2000 cycles at 5.0 A g^(-1).Such satisfactory electrochemical performance is believed to result from the enhanced reaction kinetics provided by the stable layered structure and a high intercalation pseudo-capacitance *** results could provide enlightening insights into the design of layered vanadium oxide cathodematerials.

关键词： Ammonium vanadate bronze Co-pre-intercalation Urchin-like hierarchical structure Aqueous zinc-ion batteries

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基于三维势流理论的浮托驳船安装设计

中国海洋平台 2022年第5期37卷 62-68页

作者：周绪强交通运输部烟台打捞局打捞技术开发中心山东烟台264012

在三维势流理论的基础上通过边界条件和控制方程分析流体入射势、辐射势、绕射势等3种速度势,引入悬链线法和集中质量法建立关于浮托安装进船、浮托安装退船、驳船就位停泊等3个阶段的驳船船缆耦合运动模型。当波浪方向为270°时停泊就... 详细信息

在三维势流理论的基础上通过边界条件和控制方程分析流体入射势、辐射势、绕射势等3种速度势,引入悬链线法和集中质量法建立关于浮托安装进船、浮托安装退船、驳船就位停泊等3个阶段的驳船船缆耦合运动模型。当波浪方向为270°时停泊就位阶段最大系泊缆张力达176.67 t,对应的系泊缆为左舷艉部,此时安全因数最小(2.16),系泊缆设计张力为185.20 t。在进船阶段艉部系泊缆张力在3个阶段依次减小,舯部和艏部系泊缆张力在3个阶段依次增大。集中质量法求得的和MOSES软件得到的进船和退船系泊缆张力误差分别为2.3%和5.6%。研究设计的浮托驳船安装系泊运动计算模型适用于不同工况下的系泊缆张力。

关键词：浮托驳船安装三维势流理论集中质量法

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多级液力变速传动装置的工作特性与功率分流原理分析

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机床与液压 2008年第10期36卷 63-66页

作者：董泳闫国军周绪强哈尔滨工业大学能源科学与工程学院黑龙江哈尔滨150001

多级液力变速传动装置(MSVD)适合于流体输送机械的速度控制而利于节能。相比于调速型液力偶合器,(MSVD)在较宽的速度范围内可以保持较高的传动效率。本文介绍了MSVD装置的结构组成、工作原理与特性、各组成部分的相互配合及其监控系统,... 详细信息

多级液力变速传动装置(MSVD)适合于流体输送机械的速度控制而利于节能。相比于调速型液力偶合器,(MSVD)在较宽的速度范围内可以保持较高的传动效率。本文介绍了MSVD装置的结构组成、工作原理与特性、各组成部分的相互配合及其监控系统,通过特性曲线分析了MSVD装置在保持液力传动传统优势的同时具有较高工作效率的特点,并介绍了大功率、高速运行行星变速齿轮的功率分流原理。

关键词：多级液力变速传动装置(MSVD) 工作原理特性功率分流

Parallel Physics-Informed Neural Networks Method with Regularization Strategies for the Forward-Inverse Problems of the Variable Coefficient Modified KdV Equation

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Journal of Systems Science & Complexity 2024年第2期37卷 511-544页

作者： zhou Huijuan School of Science Shanghai Maritime UniversityShanghai 201306China

This paper mainly introduces the parallel physics-informed neural networks(PPINNs)method with regularization strategies to solve the data-driven forward-inverse problems of the variable coefficient modified Korteweg-de Vries(VC-MKdV)*** the forward problem of the VC-MKdV equation,the authors use the traditional PINN method to obtain satisfactory data-driven soliton solutions and provide a detailed analysis of the impact of network width and depth on solving accuracy and ***,the author finds that the traditional PINN method outperforms the one with locally adaptive activation functions in solving the data-driven forward problems of the VC-MKdV *** for the data-driven inverse problem of the VC-MKdV equation,the author introduces a parallel neural networks to separately train the solution function and coefficient function,successfully addressing the function discovery problem of the VC-MKdV *** further enhance the network’s generalization ability and noise robustness,the author incorporates two regularization strategies into the *** amount of numerical experimental data in this paper demonstrates that the PPINNs method can effectively address the function discovery problem of the VC-MKdV equation,and the inclusion of appropriate regularization strategies in the PPINNs can improves its performance.

关键词： Data-driven forward-inverse problems parallel physics-informed neural networks regularization strategies variable coefficient modified KdV equation

Identification of an Aux/IAA regulator for flesh firmness using combined GWAS and bulked segregant RNA-Seq analysis in watermelon

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Horticultural Plant Journal 2024年第5期10卷 1198-1213页

作者： Muhammad Anees Hongju Zhu Muhammad Jawad Umer Chengsheng Gong Pingli Yuan xuqiang Lu Nan He Mohamed Omar Kaseb Dongdong Yang Yong Zhao Wenge Liu Henan Joint International Research Laboratory of South Asian Fruits and Cucurbits Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan 450009China Henan Key Laboratory of Fruit and Cucurbit Biology Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan 450009China State Key Laboratory of Cotton Biology Institute of Cotton ResearchChinese Academy of Agricultural Science(ICRCAAS)AnyangHenan 455000China National Key Laboratory for Germplasm Innovation&Utilization of Horticultural Crops Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan 450009China

Watermelon is a highly cultivated fruit crop renowned for its quality properties of fruit *** various quality factors,fruit flesh firmness is a crucial quality parameter influencing the fruit texture,shelf life and its commercial *** auxin/indole-3-acetic acid(Aux/IAA)plays a significant role in fruit development and ripening of non-climacteric ***,the regulatory mechanism of Aux/IAA in controlling fruit flesh firmness and ripening in watermelon remains *** this study,we employed an integrative approach combining genome-wide association study(GWAS)and bulked segregant RNA-Seq analysis(BSR-Seq)to identify an overlapping candidate region between 12776310 and 12968331 bp on chromosome 6,underlying an auxin-responsive gene(Aux/IAA)associated with flesh firmness in *** analysis,followed by real-time quantitative reverse transcription PCR(qRT-PCR),confirmed that the expression of Aux/IAA was consistently higher in fruits with high flesh *** sequence alignment revealed a single base mutation in the coding region of Aux/***,the concomitant Kompetitive/Competitive allele-specific PCR(KASP)genotyping data sets for F2 population and germplasm accessions identified Aux/IAA as a strong candidate gene associated with flesh ***/IAA was enriched in the plant hormone signal transduction pathway,involving cell enlargement and leading to low flesh *** determined the higher accumulation of abscisic acid(ABA)in fruits with low flesh firmness than hard ***,overexpression of Aux/IAA induced higher flesh firmness with an increased number of fruit flesh cells while reducing ABA content and flesh cell ***,the allelic variation in Aux/IAA for soft flesh firmness was found to exist in Citrullus mucosospermus and gradually fixed into Citrullus lanatus during domestication,indicating that soft flesh firmness was a domesticated *** findings significantly enhanced our unders

关键词： Watermelon Flesh firmness GWAS BSR-Seq KASP marker analysis Transient overexpression