Results 41 to 50 of about 1,019,871 (171)

高血压合并主动脉夹层患者高血压特征及院前降压治疗 [PDF]

open access: yes, 2015
Objective: To summarize hypertension characteristics and pre hospital antihypertensive therapy in patients with hypertension and aortic dissection, to explore the measures of prevention and control.
Peng, Guo-shun; Department of Cardiology, The Second People's Hospital of Zhuhai, Guangdong ,P.R.China   +2 more
core   +1 more source

塔里木盆地高压、超高压气藏动态描述技术(3)

open access: yes, 2010
编者按语:力学研究所的刘曰武副研究员和中国石油勘探开发科学研究院廊坊分院合作,共同完成了塔里木盆地高压、超高压气藏动态描述技术的研究 ...
中国科学院老科技工作者协会工程力学分会
core   +1 more source

新型高压耦合电力电容器

open access: yesGaoya dianqi, 1960
在社会主义大跃进的新形势下,我厂的新产品不断地试制成功。目前在高压电力电容器方面已经试制成功了一种OY110—0.0066型高压耦合电力电容器。 OY11—0,0066型高压耦合电力电容器是用作高压和超高压输电线路上的高频通讯,遥控和保护装置,还可以用来在高压线路上抽取电力。 这种新型高压耦合电力电容器的技术数据如下: 1.额定电容量 6600微微法; 2.额定电压 110仟伏; 3.试验电压。 260仟伏(交流 ...
梁义
doaj  

Co‐Optimization of Mechanical Performance and Osseointegration of Titanium‐Based Composites via a Novel Microwave‐Driven Boronization Strategy

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT The use of Ti6Al4V alloy in dental implantation is constrained by its high elastic modulus and biological inertness, which lead to delayed osseointegration and a high failure risk. Additionally, its chemical incompatibility with hydroxyapatite (HA) impedes the development of stable bioactive composites.
Shangyong Zuo   +8 more
wiley   +1 more source

开关管高压放电检测仪的研制

open access: yesGaoya dianqi, 2006
由可调直流高压电源、放电检测器、控制器、触发器等构成高压放电检测仪,调节直流高压电源给储能器充电,当高压开关管在加高电压和等待工作过程中发生自击穿或受到高压脉冲触发导通时,放电检测器检测出开关管高压放电信号使放电指示和计数器工作。所研制的触发器检测开关管和高压放电检测仪,能确保开关管的高压放电不误检和漏检。
米伦
doaj  

Inverse Thermal Softening Behavior in a High‐Entropy Alloy Under Various Strain Rates

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Although face‐centered cubic high‐entropy alloys (HEAs) have received extensive attention and in‐depth research, most existing studies focus on single temperature or strain rate conditions, lacking systematic investigations into deformation mechanisms under extreme thermomechanical coupling environments.
Zhi Wang   +6 more
wiley   +1 more source

一种大功率线性输出高压稳压装置及方法

open access: yes, 2013
本发明涉及一种大功率线性输出高压装置及方法。包括依次连接的弦波发生电路、正弦波幅度放大电路、初级功率放大电路、推挽功率放大电路、升压变压器、高压整流滤波电路、高压直流输出接口、及分别与MCU和过压过流保护电路连接的电流采集电路和电压采集电路;还包括与MCU相互连接的电压电流显示。本发明提供了一种高稳定性、高精确率、大功率输出的大功率线性输出高压装置及方法。
赵建科   +5 more
core  

老年高血压患者不同体位血压的研究

open access: yesZhongguo shiyan zhenduanxue, 2011
目的测定老年高血压患者立位、坐位和卧位不同体位血压的变化及餐后血压的变化。方法本实验随机抽取2009年1月-2010年6月新疆医科大学第五附属医院门诊或住院60岁以上110例老年高血压患者1、05例老年非高血压患者1、02例中年高血压患者,采用台式水银血压计柯氏音听诊法,测定卧位、坐位、立位血压,同时监测靶器官损害的发生率进行分析。结果老年高血压组立位收缩压及舒张压显著下降,与坐位、卧位比较有显著性差异(P0.01);老年非高血压组立位收缩压及舒张压显著下降,与坐位、卧位比较有显著性差异(P0.05 ...
窦媛媛, 徐新娟, 罗梅
doaj  

Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan   +6 more
wiley   +1 more source

一种高压自动泄压系统

open access: yes, 2014
本发明公开一种高压自动泄压系统,该系统包括:压力变送器;通过压力变送器与压力容器相连的压力显示仪表;接收压力显示仪表的反馈信号的取反电路;能对取反电路的输出进行强控制的开光电路;接收取反电路信号的驱动电路;输入端接驱动电路,导通后能对压力容器泄压的电(气)动阀门。本发明通过压力容器内的压力变化来控制阀门的开关,起到一旦压力容器超过设定压力,就自动泄压的作用。并且可以用到其他需要高压自动泄压的装置。还具有结构紧凑小巧,费用低廉,安全可靠 ...
唐书凯   +8 more
core  

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