wea相关论文
目的:探讨渐进式直立活动在慢性呼吸衰竭患者无创通气撤机中的应用效果。方法:采用便利抽样法，选取2018年1月—2020年1月在解放军海......
An efficient chemical reduction-induced assembly of Fe3O4@graphene fiber for wire-shaped supercapaci
Benefiting from high flexibility and weavability,the wire-shaped supercapacitors(SCs)arouse tremendous interests for the......
通过永久型铸造制备一系列Al-12Si-3Cu-(0.5-2.5)Mg(质量分数,%)合金,然后进行T6热处理,研究添加Mg和T6热处理对Al-Si-Cu-Mg合金显......
In the present research, high chromium cast irons(HCCIs) were prepared using the lost foam casting(LFC) process. To impr......
The δ~(18)O variation of a stalagmite from Qixing Cave,Guizhou Province and indi-cated climate chang
A stalagmite from Qixing Cave, Guizhou Province was dated with the TIMS U-series method and its oxygen isotope compositi......
Impact of age on host responses to diet-induced obesity:Development of joint damage and metabolic se
Background:Osteoarthritis is one of the leading causes of pain and disability worldwide, and a large percentage of patie......
There are four seasons in ayear. They are spring, summer,autumn and winter. 注：“本文中所涉及到的图表、注解、公式......
ISCHEMIC PRECONDITIONING RELIEVES ISCHEMIA/REPERFUSION INJURY OF HIPPOCAMPUS NEURONS IN RAT BY INHIB
Objective To examine whether ischemic preconditioning (IPC) can protect neuron against delayed death in CA1 subfield of ......
Effects of gentiana scabra bage on expression of hepatic type Ⅰ,Ⅲ collagen proteins in Paragonimus s
Objective:To exploit- the effects of gentiana scabra bage on the expression of hepatic collagen proteins in Paragonimus ......
LiNbO_3 crystal is an important electro-optical material. However, the laser induced refractive index variability (i.e.......
西南喀斯特山地土壤(主要有黄壤和石灰土)的母质来源和形成过程至今存在较多争议.本研究选择黔中地区喀斯特典型的黄壤和石灰土土......
In El Nino years, along the southeast China coast, the seasonal cycle of sea level variation - low in spring, high in a......
AN ULTRA-SHALLOW WATER STORM SURGE MODEL WITH QUADRATICALLY DEPTH-VARYING EDDY VISCOSITY AND ITS APP
Based on the ultra-shallow water storm surge theory proposed by Qin and Feng (1975), an ultra-shallow water storm surge......
Analysis of the high and low temperature centers and their relation with circulations in the East Ch
Three warm currents,the Kuroshio,its shelf intrusion branch in the northeast of Taiwan and the Taiwan Warm Current(herea......
分布式电池储能变换器一般采用电流型控制算法,变换器低频段等效容性输出阻抗导致其弱电网运行稳定性较差,多机并列运行时易引发谐......
随着循环流化床锅炉在我国广泛应用并逐渐向大型化发展,金属受热面的磨损问题日益成为造成其运行事故的主要原因之一.该文从磨损机......
,LIFE-SPAN OF CLASSICAL SOLUTIONS OF INITIAL-BOUNDARY VALUE PROBLEM FOR FIRST ORDER QUASILINEAR HYPE
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In this paper, push-over analysis for tall concrete structures was made and a corresponding computer program was given.S......
Friction and wear behavior of carbon fiber reinforced lithium aluminosilicate composites sliding aga
Carbon fibers reinforced lithium aluminosilicate matrix composites (Cf/LAS) were prepared by slurry infiltration combine......
Efficacy of medium-chain fatty acid salts distilled from coconut oil against twoenteric pathogen cha
Background:The search for altatives to antibiotics in pig production has increased the interest in naturalresources with......
To research the influencing rule of severe plastic deformation on Al matrix in situ composites,10 wt% Al_3Zr/2024 Al in ......
阅读下列4篇短文,从每题所给的四个选项中(A,B,C和D)中,选出最佳选项。(难易程度已用图标表示出:易;中等;难)
Read the four shor......
Microstructure, Impact Fatigue Resistance and Impact Wear Resistance of Wear Resistant Low Cr-Si Cas
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Effects of Cr Content and Annealing Temperature on Microstructure and Wear Characteristics of Cast A
The effects of Cr content and annealing temperature on abrasive wear characteristics of cast ausferrite nodular iron wer......
Friction stir surfacing of cast A356 aluminium-silicon alloy with boron carbide and molybdenum disul
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Molecular recognition on supramolecular systems (XXXV)-- Synthesis of novel b-cyclodextrin derivativ
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Stakeholders’ Participation in Agricultural Farmers’ Extension Services Programmes in Sub-Saharan Af
The paper presents findings from a study carried out to assess the contribution of stakeholders’participation on the pe......
传统低压减载逐轮次动作，各轮次动作延时固定，难以与负荷特性的变化相适应。基于扰动后负荷的无功电压响应，利用负荷侧等效电纳的变化......
应用基于时域有限差分法(FDTD)的XFDTD仿真工具分析研究2.4/5.2/5.7 GHz穿戴式躯域传感器网络(W-BsN)的体表路径损耗和时延特性.仿......
以紫铜片为基体,采用电镀或化学镀法分别制备了Ni、Sn、Ni–P以及Ni–Sn–P镀层。通过测定Tafel极化曲线和电化学阻抗谱,对比研究......
In the present research, high chromium cast irons (HCCIs) were prepared using the lost foam casting (LFC) process. To im......
采用小比例轮轮滚动接触疲劳试验再现钢轨裂纹萌生和磨耗过程,根据钢轨裂纹萌生和磨耗共存预测方法结合试验条件建立相应的预测模......
The laser technology has made remarkable progress over the past couple of decades.It is being widely employed in diverse......
基于Robin边值条件下的Poisson方程,运用修正弱有限元方法,通过建立u的弱函数空间、相应的数值格式以及误差方程,进而分析了其u h......
以单分散聚(苯乙烯-甲基丙烯酸)(P(St-MAA))微球为结构基元,采用重力沉降自组装法在涤纶织物上构建光子晶体结构色薄膜,探究织物织......
水泥土是简易机场建设中道面基层的主要使用材料之一,但在使用中易遭受水的侵蚀,为解决水泥土水稳性和耐久性不良的问题,采用玻璃......
利用常规资料、天气图、物理量诊断分析等资料，对“云娜”登陆后的特征及其对商城造成特大暴雨的天气过程进行了分析，结果表明：强大深......
为延长作为终端外部存储设备的闪存介质的使用寿命,采用分组—循环擦写的思想设计了一种闪存磨损均衡算法。该算法将闪存物理块分......
针对香港风化花岗岩场址勘探,在液压旋转钻机上安装钻孔过程监测系统（drilling process monitoring,DPM）,对有效轴压力、钻具转速、......
波动方程分解是指从弹性波方程中分解出描述各种波场独立传播的波动方程。在各向异性介质中，由于纵波、横波是耦合在一起传播的，所以......
研究了氮、碳、锰等合金元素对介稳奥氏体锰钢力学性能及耐磨性的影响。结果表明,在中、小冲击磨损工况条件下,由于应力波效应,决......
针对滚珠直线导轨副的精度保持性问题,对其在加载条件下的接触刚度和磨损过程进行了建模和仿真分析.基于Hertz接触理论和刚体动力......
针对目前获取实时天气预报多为基于B/S模式下的网站形式,为便于用户获取气象服务信息和查看相关城市地理位置等信息,通过对Google ......
石墨粒子的影响在磨擦上满足并且穿 AZ91 镁合金矩阵的特征合成被学习。结果证明 wear 电阻包含石墨合成是比在测试条件下面的矩阵......
探讨了Cr12MoV钢制硅钢片冷冲模最佳的高温淬火和高温回火温度范围。对比了二次硬化处理与常规热处理的耐磨性。结果表明,1120℃是......
采用等离子堆焊技术在Q235钢表面分别堆焊Ni-W-C合金粉末和M—Cr—Mn系复合粉末熔覆层。利用金相显微镜、扫描电镜、C射线衍射仪（XR......
通过SRV试验机考察了乙醇润滑条件下CrN、WS2、渗氮、B4C活塞环材料与气缸材料对磨时的摩擦学性能，通过SEM、EDX表面形貌方法对磨损......
为研究玄武岩纤维（BF）对Al基复合材料耐磨性的影响,通过化学镀铜对BF进行表面改性,利用粉末冶金法制备了不同BF含量的Al基复合材料,......
在现代科技的快速发展下,弱电智能化开始被人们应用到建筑工程中,弱电智能化在建筑工程中的应用有效提升了工程建设效率。为此,文......
