Results 21 to 30 of about 122,388 (119)

静脉输液器中的流体力学

open access: yes, 2010
很多人都有过静脉输液(俗称打点滴)的经历,这里涉及到的许多流体力学原理,很多人未必注意到。 图1 静脉输液器示意图  静脉输液器的示意图如图1所示 ...
刘大有
core   +1 more source

MoS2‐Modified Bamboo‐Like Nitrogen‐Doped Carbon Nanotubes Encapsulating Ni Nanoparticles Enabling Synergistic Adsorption–Catalysis for High‐Performance Lithium–Sulfur Batteries

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang   +6 more
wiley   +1 more source

Cell‐Integrated In Situ Prelithiation Enables Stable and Fast‐Charging Self‐Supporting Al Foil Anodes

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Self‐supporting aluminum (Al) foil anodes offer the advantages of high energy density, simplified structural configuration, and low cost. However, their practical application is severely constrained by challenges such as low initial Coulombic efficiency, pronounced interfacial side reactions, and sluggish lithiation kinetics.
Sheng Yang   +8 more
wiley   +1 more source

一种气固、液固、液液引射加料的系统及配比输运方法

open access: yes, 2008
本发明涉及气固、液固、液液引射加料的系统,包括储液罐由圆筒和安装在圆筒下端口的漏斗组成,上盖密封固定在储液罐的上端口,上盖通过法兰固定连接四通,其上端口安三通,四通的左右两端口分别为液体入口和气体入口,三通的一端口为固体入口,另一端口安压力表;漏斗下口固定输运管,该输运管上设置有阀门和单向阀,单向阀上连接引射器,引射器引入口和引射器出口水平放置,引射器固相引入口垂直向上,与要接的管线在同一水平面上安装。本发明的方法利用引射器产生的负压引入气、液、固相,实现有比例的加入;如果第三相为细颗粒固相 ...
张军   +7 more
core   +1 more source

The vesicle trafficking R‐SNARE VAMP714 connects auxin responses, ROS and ion homeostasis in Arabidopsis under salt stress

open access: yesNew Phytologist, Volume 251, Issue 1, Page 207-227, July 2026.
Network of VAMP714‐dependent interactions during salt stress. Summary Plant responses to salt stress include an altered root architecture mediated by ion imbalances, reactive oxygen species (ROS) accumulation, and altered hormonal responses. Auxin is implicated in these processes.
Jialei Sun   +3 more
wiley   +1 more source

Pre‐Established Zincophilic Na2SiO3 Decorated Array‐Like Channels to Regulate the Zn2+ Flux and Interfacial Corrosion for Dendrite‐Free Zinc Anode

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Aqueous zinc‐ion batteries (AZIBs) have attracted increasing attention in energy storage owing to their high energy density, low redox potential, and cost‐effectiveness. Nevertheless, uncontrolled dendrite accumulation, gas generation, and severe side‐reaction problems hinder the cycling lifespan, which prevents their commercial applications ...
Xiangzhong Kong   +8 more
wiley   +1 more source

井筒中钻井信息的传输动态分析

open access: yes, 2002
井眼轨道闭环控制校术是当今钻井技术领域的研究热点,而地面与井下的信息传输是这一高新技术中的重要环节。目前,地面与井下的无线信息传输系统主要是采用钻井液脉冲方式,如何提高传输深度和传输速率一直都是粘井液脉冲传输系统的研究主题。本文基于多相流理论,研究了粘井液脉冲信号的传输速度及其影响因素,分析了信号的动态传输特性和衰减规律。研究表明:脉冲信号在井筒中的往复传播类似于阻尼振荡;信号频率和钻井液粘度是影响信号衰减的主要可控因素 ...
刘修善, 石在虹
core   +2 more sources

智能输液泵

open access: yes, 1995
本实用新型属以静脉注射方式将介质引入人体内的医疗器械,它是一种安全、精确控制输液的装置。智能输液泵以线性蠕动泵为主机并安装了阻塞检测电路,气泡检测电路、心率检测电路,整机采用微型计算机控制,对输液过程中的异常如气泡、阻塞、心率异常等均可进行报警,对心率可进行在线监测,并根据心率变化情况,自动调整输液速度。减轻了护士工作强度 ...
李鸿德, 刘忠新
core   +1 more source

Synergistic Engineering of Amorphous Cathode and Hybrid Electrolyte Toward Stable High‐Voltage Aqueous Zn‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT The development of high‐voltage aqueous zinc‐ion batteries (AZIBs) is primarily hindered by the lack of suitable cathode materials and electrolytes that can work in broad voltage windows. Herein, we propose a synergistic strategy that concurrently addresses these challenges through the integration of an amorphous vanadium oxyphosphate/graphene
Xianyu Liu   +7 more
wiley   +1 more source

我院静配中心出门输液回退情况分析 [PDF]

open access: yes, 2017
目的了解我院静配中心出门输液回退的情况,分析原因,减少输液回退现象。方法收集我院静配中心2016年1月~12月出门输液回退的资料,按照输液种类,回退比例,回退原因进行分析。结果从分析出门输液回退的情况看很大一部分的输液问题是可避免的,人为因素是主要原因。结论加强静配中心各环节的质量管控,提高每位员工的责任心,有利于提高工作效率 ...
方水凉, 邱杏桃
core  

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