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多排桩式岸壁结构遮帘挡土效应分析

水运工程 2024年第12期 217-223页

作者：王开放朱艳周杰鑫邵云怡曹宏泰叶子尧中船第九设计研究院工程有限公司上海200090 上海市海洋工程和船厂水工特种工程技术研究中心上海200090 中建港航局集团有限公司上海200433

多排桩式岸壁结构由多排桩、卸荷板、防汛墙、回填砂等组成,是一种可兼做工作码头的新型永久结构。遮帘挡土效应在板桩码头中已有较多研究,但在多排桩式岸壁结构中尚缺乏。本文依托长兴某港池工程,通过三维有限元软件PLAXIS 3D建立多排... 详细信息

多排桩式岸壁结构由多排桩、卸荷板、防汛墙、回填砂等组成,是一种可兼做工作码头的新型永久结构。遮帘挡土效应在板桩码头中已有较多研究,但在多排桩式岸壁结构中尚缺乏。本文依托长兴某港池工程,通过三维有限元软件PLAXIS 3D建立多排桩式岸壁结构,研究有无遮帘桩、前排桩与遮帘桩的排距、后排遮帘桩桩间距、前排桩桩身刚度对多排桩式岸壁结构排桩内力和变形的影响,得出如下结论:有后排遮帘桩时,多排桩式岸壁结构的整体位移较小,且前排桩的弯矩较小;前后排桩的排距、遮帘桩桩间距和前排桩的刚度都影响前排桩的内力,前排桩的内力随着前后排距、遮帘桩间距减少而减少,随着前排桩的刚度降低而降低;考虑场地条件及工程造价方面,评价不同参数对于遮帘挡土效应的敏感性:前排桩桩身刚度>前排桩与遮帘桩的排距>后排遮帘桩桩间距;在此基础上,提出优化设计方案,相比原方案前排桩弯矩可降低50%,为后续工程应用提供一定的借鉴。

关键词：多排桩式岸壁结构遮帘桩挡土效应三维有限元分析

Zhuangyao Jianshen pill(壮腰健肾丸) ameliorates testosterone-induced benign postatic hyperplasia in rats

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Journal of Traditional Chinese Medicine 2024年第4期44卷 694-702页

作者： ZHENG Jingrui CHEN Weijian ye Binbin MO ziyao DU Qunqun QIN Renan NIE Ke School of Chinese Materia Medica Guangdong Pharmaceutical UniversityGuangzhou 510006China Modern Chinese Medicine Research Institute Guangzhou Baiyunshan Chenliji Pharmaceutical Factory Co.Ltd.Guangzhou 510228China

OBJECTIVE:To determine the therapeutic effects of the Zhuangyao Jianshen pill(壮腰健肾丸,ZYJSP)against benign prostatic hyperplasia(BPH)and investigate the underlying ***:Forty-eight male Sprague-Dawley rats were randomly divided into six groups:Control group,BPH model group,finasteride-treated group,ZYJSP low,medium and high dose *** for the control group,40 rats were castrated and injected with testosterone propionate(TP)for 28 consecutive day to induce ***,the corresponding drugs were administered by *** prostate wet weight,prostate index(PI),and the histopathological changes in the prostate were measured as the basis for examining the efficacy of ZYJSP against *** of the serum sex hormones,oxidative stress markers,inflammatory markers,renal function markers,growth factors,and Cyclin D1 expression in prostate were measured to characterize the therapeutic mechanism of ZYJSP against ***:ZYJSP administration significantly reduced prostate wet weight and PI and ameliorated histological changes of the prostate in TP-treated castrated *** markedly increased the levels of creatinine,blood urea nitrogen and growth factors in the serum as well as the expression of the Cyclin D1 in the *** of these markers were significantly decreased by *** significantly restored the dysregulation of testosterone,estradiol,and dihydrotestosterone caused by ***,ZYJSP relieved TP-induced prostate injury and exhibited both anti-inflammatory and anti-oxidant activity by decreasing interleukin-6,interleukin-8,and malondialdehyde levels and increasing the activity of superoxide dismutase in the ***:These findings indicate that ZYJSP can effectively ameliorate BPH induced by TP in castrated rats,and the underlying mechanism might be related to regulating sex hormone balance,reducing oxidative stress,and inhibiting the inflammatory response.

关键词： testosterone ameliorate hyperplasia

Vector imaging of electric field-induced reversible magnetization reversal in exchange-biased multiferroic heterostructures

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Science China Materials 2022年第1期65卷 186-192页

作者： Xinger Zhao Zhongqiang Hu Ting Fang Yuxin Cheng Keqing Shi Yi-Xin Weng Yongjun Du Jingen Wu Mengmeng Guan Zhiguang Wang ziyao Zhou Ming Liu Jing-ye Pan Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic Science and EngineeringState Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049China Translational Medicine Laboratory the First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000China Key Laboratory of Intelligent Critical Care and Life Support Research of Zhejiang Province Department of Intensive Carethe First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000China

Exchange bias between ferromagnetic and antiferromagnetic layers has been widely utilized in spintronic *** the exchange bias in magnetic multilayers by an electric field(E-field)has been proposed as a low-power solution for manipulating the macroscopic properties such as exchange bias fields and magnetization values,while how the magnetic domains respond to the E-fields has rarely been reported in an exchange-biased ***,we realize the vector imaging of reversible electrical modulation of magnetization reversal in exchange-biased CoFeB/IrMn/PMN-PT(011)multiferroic heterostructures,utilizing in-situ quantitative magneto-optical Kerr effect(MOKE)*** the electrical control,magnetic domains at-80 Oe rotate reversibly between around 160°and 80°-120°,whose transverse components reverse from 225°to 45°***,pixel-by-pixel comparisons are conducted to further imply the reversible magnetization reversal by ***-induced reversible magnetization reversal is also demonstrated without applying external magnetic *** imaging of electrical manipulation of exchange bias is of great significance in understanding the magnetoelectric effect and the development of next-generation spintronic devices.

关键词： exchange bias magnetic domains multiferroics magnetization reversal

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许可链下的事务并行执行模型

计算机科学 2024年第1期51卷 124-132页

作者：董昊赵恒泰王子尧袁野张奥千北京理工大学计算机学院北京100081 东北大学计算机科学与工程学院沈阳110169

现有的许可链系统大多采取串行的事务执行方式,无法利用多核处理器的性能优势。在共识算法性能较高的许可链中,这种串行的事务执行方法将会成为性能瓶颈。为降低排序-执行-验证架构的许可链中事务执行的时间开销,文中提出了两种事务并... 详细信息

现有的许可链系统大多采取串行的事务执行方式,无法利用多核处理器的性能优势。在共识算法性能较高的许可链中,这种串行的事务执行方法将会成为性能瓶颈。为降低排序-执行-验证架构的许可链中事务执行的时间开销,文中提出了两种事务并发模型。首先,提出了基于地址表的并行执行模型,通过静态分析的方法将事务的读写集映射到地址表中,并利用地址表构建调度图实现无数据冲突的事务并行执行;其次,针对静态分析方法不适用于读写需求复杂的应用场景,提出了基于多版本时间戳排序的并行执行模型,领导者节点使用多版本时间戳排序算法并行地预执行事务并将调度图以事务依赖三元组的形式存储入区块,所有验证节点通过事务依赖三元组进行调度,在保证一致性的前提下实现事务的并行执行;最后,在Tendermint中实现了所设计的两种事务并发模型,并进行了事务执行阶段性能测试和多节点性能测试。实验结果表明,相比串行执行,所提模型在单节点8线程时的事务执行时间分别减少了68.6%和28.5%,4节点8线程时区块链吞吐量分别提升了约43.4%和19.5%。

关键词：区块链实用拜占庭容错事务并发多版本时间戳排序 Tendermint

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螺旋氙灯泵浦钛宝石激光器

激光杂志 2001年第2期22卷 11-12页

作者：帅文黄晔王纪光李子尧殷绍唐吴路生中国科学院安徽光学精密机械研究所合肥230031

本文报道了螺旋氙灯泵浦钛宝石激光器的特性 ,获得斜率效率 0 0 78%、最大能量 148 3毫焦的激光输出。

关键词：螺旋氙灯掺钛宝石激光器泵浦

The Solar Upper Transition Region Imager(SUTRI)Onboard the SATech-01 Satellite

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Research in Astronomy and Astrophysics 2023年第6期23卷 153-171页

作者： Xianyong Bai Hui Tian Yuanyong Deng Zhanshan Wang Jianfeng Yang Xiaofeng Zhang Yonghe Zhang Runze Qi Nange Wang Yang Gao Jun Yu Chunling He Zhengxiang Shen Lun Shen Song Guo Zhenyong Hou Kaifan Ji Xingzi Bi Wei Duan Xiao Yang Jiaben Lin ziyao Hu Qian Song Zihao Yang Yajie Chen Weidong Qiao Wei Ge Fu Li Lei Jin Jiawei He Xiaobo Chen Xiaocheng Zhu Junwang He Qi Shi Liu Liu Jinsong Li Dongxiao Xu Rui Liu Taijie Li Zhenggong Feng Yamin Wang Chengcheng Fan Shuo Liu Sifan Guo Zheng Sun Yuchuan Wu Haiyu Li Qi Yang Yuyang ye Weichen Gu Jiali Wu Zhe Zhang Yue Yu Zeyi ye Pengfeng Sheng Yifan Wang Wenbin Li Qiushi Huang Zhong Zhang National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 101408China School of Earth and Space Sciences Peking UniversityBeijing 100871China Key Laboratory of Solar Activity and Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Tongji University Institute of Precision Optical EngineeringSchool of Physics Science and EngineeringKey Laboratory of Advanced Micro-Structured Materials MOEShanghaiChina Xi'an Institute of Optics and Precision Mechanics Chinese Academy of SciencesXi'an 710119China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201304China Yunnan Observatories Chinese Academy of SciencesKunming650011China

The Solar Upper Transition Region Imager(SUTRI)onboard the Space Advanced Technology demonstration satellite(SATech-01),which was launched to a Sun-synchronous orbit at a height of~500 km in 2022 July,aims to test the on-orbit performance of our newly developed Sc/Si multi-layer reflecting mirror and the 2k×2k EUV CMOS imaging camera and to take full-disk solar images at the Ne VII 46.5 nm spectral line with a filter width of~3 *** employs a Ritchey-Chrétien optical system with an aperture of 18 *** on-orbit observations show that SUTRI images have a field of view of~416×416 and a moderate spatial resolution of~8″without an image stabilization *** normal cadence of SUTRI images is 30 s and the solar observation time is about16 hr each day because the earth eclipse time accounts for about 1/3 of SATech-01's orbit ***15 GB data is acquired each day and made available online after *** images are valuable as the Ne VII 46.5 nm line is formed at a temperature regime of~0.5 MK in the solar atmosphere,which has rarely been sampled by existing solar *** observations will establish connections between structures in the lower solar atmosphere and corona,and advance our understanding of various types of solar activity such as flares,filament eruptions,coronal jets and coronal mass ejections.

关键词： Sun:transition region Sun:UV radiation Sun:activity space vehicles:instruments

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基于MM-Net的阀芯外表面缺陷检测

智能计算机与应用 2022年第12期12卷 122-127页

作者：熊鑫州肖子遥朱肖磊叶沐上海工程技术大学机械与汽车工程学院上海201620

阀芯是喷油器的重要组成部分,复杂的加工工艺与加工环境会导致部分阀芯出现多种形态的生产缺陷,传统的人工目检存在主观性强、检测效率低等缺陷。基于此,本文提出一种基于MM-Net的阀芯外表面缺陷检测方法,所提出的MM-Net检测模型由基于... 详细信息

阀芯是喷油器的重要组成部分,复杂的加工工艺与加工环境会导致部分阀芯出现多种形态的生产缺陷,传统的人工目检存在主观性强、检测效率低等缺陷。基于此,本文提出一种基于MM-Net的阀芯外表面缺陷检测方法,所提出的MM-Net检测模型由基于注意力机制的金字塔逐级多层次特征提取模块、多尺度特征融合模块等4个模块组成,多个模块的组合有效实现了对阀芯外表面缺陷特征的提取、提纯与融合,并在判别缺陷类型的同时实现了对瑕疵位置的定位。最后通过对比实验,验证了本文所提出方法在阀芯外表面缺陷检测方面的优势。

关键词：阀芯缺陷检测 deep learning 语义分割多模块融合

中药超声导入联合穴位压力刺激贴治疗老年失眠伴抑郁临床研究

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新中医 2023年第14期55卷 160-164页

作者：陈怡蔡子耀张乐敏叶芷甸温州市第七人民医院浙江温州325000

目的:观察中药超声导入联合穴位压力刺激贴治疗老年心胆气虚型失眠伴抑郁的临床疗效。方法:将90例老年心胆气虚型失眠伴抑郁患者按随机数字表法分成观察组和对照组,每组45例。对照组给予艾司唑仑片治疗,观察组在对照组基础上加用中药超... 详细信息

目的:观察中药超声导入联合穴位压力刺激贴治疗老年心胆气虚型失眠伴抑郁的临床疗效。方法:将90例老年心胆气虚型失眠伴抑郁患者按随机数字表法分成观察组和对照组,每组45例。对照组给予艾司唑仑片治疗,观察组在对照组基础上加用中药超声导入联合穴位压力刺激贴治疗,2组均治疗4周。比较2组临床疗效,治疗前后失眠严重程度指数(ISI)、睡眠信念与态度量表(DBAS)、抑郁自评量表(SDS)、蒙哥马利抑郁量表(MADRS)及生活质量问卷(SF-36)评分。结果:治疗后,观察组临床疗效总有效率86.67%,高于对照组66.67%(P<0.05)。2组ISI、DBAS、SDS、MADRS评分均较治疗前降低(P<0.05),观察组ISI、DBAS、SDS、MADRS评分均低于对照组(P<0.05)。2组生理机能、生理职能、躯体疼痛、一般健康状况、精力、社会功能、情感职能、精神状态评分均较治疗前升高(P<0.05),观察组SF-36各项细则评分均高于对照组(P<0.05)。结论:在艾司唑仑治疗基础上加用中药超声导入联合穴位压力刺激贴治疗老年心胆气虚型失眠伴抑郁,能提高临床疗效,改善睡眠质量,缓解抑郁状态,提高生活质量。

关键词：失眠抑郁老年人心胆气虚型中药超声导入穴位贴敷生活质量

神秘的皮克林乳液探索之旅——推荐一个化学科普实验

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大学化学 2024年第9期39卷 311-318页

作者：李覃贾子瑶陈烨马铭泽李琳黄涛中南民族大学化学与材料科学学院武汉430074

皮克林乳液——一种由胶体尺寸固体颗粒稳定水油界面所形成的乳液——是科学研究和生活生产的热点话题。本文对“皮克林乳液”这一概念进行科普,介绍了传统乳液和皮克林乳液的基本概念、形成原理、制备方法、实验室表征结果及在光催化... 详细信息

皮克林乳液——一种由胶体尺寸固体颗粒稳定水油界面所形成的乳液——是科学研究和生活生产的热点话题。本文对“皮克林乳液”这一概念进行科普,介绍了传统乳液和皮克林乳液的基本概念、形成原理、制备方法、实验室表征结果及在光催化等领域的应用等,让大学生、青少年、幼小学生乃至社会大众通过皮克林乳液体会化学之美和化学之趣。

关键词：皮克林乳液接触角光催化科普实验