摘要：目的:分析有氧运动对补体系统的影响,并介绍运动不同阶段的特点与要求。方法:应用计算机检索Medline和中国期刊全文数据库1980-01/2006-02与有氧运动和补体系统相关文章,检索词“complement,aerobicexercise”,“有氧运动,补体系统”,无论研究对象为动物还是运动员全部纳入,排除综述类文献。同时手工翻阅相关书籍。结果:补体系统有经典激活途径、旁路激活途径两个主要激活途径,有氧运动可以在通路的各个阶段发挥作用,影响机体的免疫功能。有氧运动初期(0～4周)补体含量减少,应在营养、情绪等方面进行积极调整,随着运动的继续(4～9周),补体含量恢复到原水平,随着运动的延长(9周以后),补体系统的调控对运动适应的进一步增加,免疫功能得到提高。结论:有氧运动可通过影响补体的激活通路,改变补体的活性,从而影响到机体的免疫功能。有氧运动不同时间段补体系统的免疫应答有不同的特点,设计运动处方时应考虑各种因素,给予调整。

摘要：The objective of the present paper is to study the sweep effect on the blade design performance of a transonic compressor *** baseline to be modified and swept is a designed well efficient transonic single rotor compressor. The first part of the present study is concerning the sweep effect with straight leading *** this case fixing the hub section the swept blade is formed by tilting the leading edge with whole blade forwards and backwards *** second part is to use an optimization strategy with simple gradient-based optimum-searching method and multi-section blade parameterization technique to search and generate an optimal swept rotor with curved arbitrary leading *** adiabatic efficiency is a little bit greater than that of the reference un-swept rotor.

摘要：激光原位微区分析可在微观尺度上完成样品的元素定量分析或同位素组成测定,为研究成岩、成矿物质来源和追踪地壳与地幔演化历史提供了独特的观察视野。但是,激光剥蚀等离子体质谱的一些缺陷阻碍了地质样品的高精度、高空间分辨率分析,比如：剥蚀池的位置效应、低剥蚀速率下信号波动影响、激光剥蚀脉动式信号导致的光谱螺纹效应、高频激光剥蚀造成的元素分馏效应等。为此,一些学者设计了不同规格和样式的激光剥蚀信号平滑装置来克服这些问题。但是,这些信号平滑装置普遍还存在气体吹扫时间过长和降低激光剥蚀信号灵敏度等问题。因此，研制新型的信号平滑装置对改善LA—ICP—MS的数据质量具有重要的意义。

摘要：本文介绍了一种基于STM32芯片的远程升级系统的设计方案。简述了从数据下载线、客户端、服务器到数据库MYSQL设计的全部过程,并提供了客户端、服务器的通信细节分析,提供了升级操作的可靠性和便利性。

摘要：目的与心脏病患儿心跳骤停相关的患者层面因素已众所周知,但可能无法改变。心脏重症监护病房(cardiac critical care unit,CICU)的组织和人员因素对心跳骤停发病率和预后的影响尚不得知。本文试图更好地了解这些潜在可改变的组织和人员因素与心跳骤停预防和抢救之间的关系。设计对儿童心脏重症监护联盟注册数据的回顾性分析。场所儿童CICU。对象评估所有CICU入院患儿的心跳骤停情况和生存预后。干预措施无。测量方法与主要结果成功预防被定义为未发生心跳骤停的入院比例(与心跳骤停发生率成反比)。抢救是指发生心跳骤停后存活至CICU出院的患儿比例。CICU的组织和人员因素通过现场问卷调查获得。考虑到医院间的聚集情况,分别采用Fine-Grey和多元回归法分析组织和人员因素与预防/抢救之间的关系。本文分析了2014年8月1日至2019年3月5日,54521例CICU入院患儿(29家医院)的1398(2.5%)例心跳骤停事件。无论是因外科还是内科疾病住院的患儿,较低的日均CICU占用率与更好的心跳骤停预防有关。每个患者日的注册护理时间越长,CICU医生"兼职"(<6工作周/年)比例越低,内科疾病入院患儿的心跳骤停抢救情况更好。注册护士经验的增加与外科疾病入院患儿的抢救情况更好有关。重症监护认证护士、接受过重症监护专业培训的全职监护医师、专职呼吸治疗师、质量/安全资源比例增加和每年CICU入院量,均与预防或抢救质量改善无关。结论本次多机构分析发现,CICU的床位占用率、注册护士经验和医生配置是与心跳骤停预防和抢救相关的潜在重要因素。横断面测量此类变量存在局限性,故需要更多的研究进一步了解这些组织和人员因素,它们之间的关系,以及医院如何调整架构以改善心跳骤停的预后。

摘要：四颗螺钉同步装卸力矩可控式气动扳手由气动扳手和转换接头组成,其主要用于同步装配和拆卸均布在同一圆周上的四颗螺钉,转换接头主要由壳体、齿轮传动装置、变径装置、力矩调节和过载保护装置、外六角扳子组成;齿轮传动装置用于传动力矩和运动,变径装置用于变换4个外六角扳子的圆周直径,力矩调节和过载保护装置用于调节扳子的最大力矩和防止装配和拆卸中的力矩过载;该接头装配效率高、结构简单、力矩可控、操作方便,可提高装配质量和装配效率,降低劳动强度,具有广泛应用价值和市场前景。

摘要：澳门科学一号卫星B星(Macao Science Satellite-1B;MSS-1B)于2023年5月21日通过中国长征二号丙火箭成功发射.其上搭载的太阳X射线探测仪(Solar X-ray Detector;SXD)于同年6月初开机运行.该探测器中的软X射线探测单元组(Soft X-ray Detection Units;SXDUs)由两个硅漂移探测器(Silicon Drift Detector;SDD)构成,其探测能谱的能量范围为0.7~***具备高能量分辨率,在5.9keV处的能量峰半高全宽为0.14keV,同时,探测器具高时间分辨率,能够以1秒的时间间隔记录能谱数据.本文结合地面标定实验及模拟分析,对MSS-1B/SXDUs探测数据进行标定,以获取准确的太阳软X射线能谱.标定后的太阳软X射线通量与静止环境观测卫星(Geostationary Operational Environmental Satellite;GOES)获取的通量数据一致.此外,初步能谱分析结果显示,MSS-1B/SXDUs不仅运行稳定,而且各项性能指标均符合预期设计,为深入研究太阳耀斑的动力学演化研究提供了可靠的观测数据.最后,搭载于澳门科学一号卫星的新型太阳X射线探测仪实现了太阳软X和硬X射线的同步观测,其宝贵的观测数据可为太阳活动研究作出贡献.

摘要：为引导青年学者开展高水平体育管理研究,本系列论文(由6篇文章组成,未来2年内陆续向读者呈现)旨在阐明中高级科学研究理念、研究流程、设计应用、测量方法、数据分析,及它们的集成性和在体育管理理论检验与发展中的功能。首篇将综述体育产业发展的背景信息,指出日益增长的科学研究需求和激烈的学术竞争环境,并讨论在体育管理研究与理论构建、检验中的核心问题。最后,揭示系列拣选内容所遵循的基本逻辑。

摘要：Refractory alloys such as tungsten and molybdenum based alloys with high strength,thermal/electrical conductivity,low coefficient of thermal expansion and excellent creep resistances are highly desirable for applications in nuclear facilities,critical components in aerospace and defense ***,the serious embrittlement limits the engineering usability of some refractory alloys.A lot of research results indicate that the performances of refractory alloys are closely related to the physical/chemical status,such as the interface dimension,interface type,interface composition of their grain boundaries(GBs),phase boundaries(PBs)and other interface *** paper reviewed the recent progress of simulations and experiments on interface design strategies that achieve high performance refractory *** strategies include GB interface purifying/strengthening,PB interface strengthening and PB/GB synergistic *** details are provided on the design/fabrication strategy such as GB interface controlling,PB interface controlling and synergistic control of multi-scaled *** corresponding performances such as the mechanical property,thermal conductivity,thermal load resistance,thermal stability,irradiation resistance,and oxidation resistance are reviewed in the aspect to the effect of *** addition,the relationships between these interfaces and material properties are ***,future developments and potential new research directions for refractory alloys are proposed.

摘要：with the ever-pressing issues of global energy demand and environmental pollution,molecular hydrogen has been receiving increasing attention as a clean alternative energy *** hydrogen production,the design and development of high-performance catalysts remains rather *** the compositions and structures of catalyst interfaces have paramount influences on the catalytic performances,the central topic here has always been to design and engineer the interface structures via rational routes so as to boost the activities and stabilities of electrocatalysts on hydrogen evolution reaction(HER).Here in this review,we focus on the design and preparation of multi-scale catalysts specifically catering to HER *** start from the design and structure-activity relationship of catalytic nanostructures,summarize the research progresses related to HER nanocatalysts,and interpret their high activities from the atomistic perspective;then,we review the studies regarding the design,preparation,HER applications and structure-activity relationship of single-atom site catalysts(SASCs),and thereupon discuss the future directions in designing HER-oriented *** the end of this review,we present an outlook on the development trends and faced challenges of catalysts for electrochemical HER.