Results 31 to 40 of about 25,354 (263)

Heart rate variability in horses with and without severe equine asthma

open access: yesEquine Veterinary Journal, Volume 57, Issue 3, Page 611-618, May 2025.
Abstract Background Equine asthma in severe form (severe equine asthma [sEA]) shares remarkable similarities with human asthma. Human studies detected changes in the autonomic nervous system function in asthmatic patients based on heart rate variability (HRV) analysis. Study design Observational study. Objectives To investigate the relationship between
Zsófia Nyerges‐Bohák   +5 more
wiley   +1 more source

Integrated design of fault diagnosis and active fault-tolerant control for submarine control systems [PDF]

open access: yes, 2015
潜艇是展示国家军事实力的一个重要法宝,在现代和未来的海战中有着举足轻重的作用。软件漏洞问题、线路意外故障、人为恶意损毁、器件容易老化、操作有误以及外界不可避免的灾害等原因都会导致潜艇控制系统发生故障。因此在考虑控制器的设计时必需将执行器故障因素考虑进去这样得到的控制器才能有效应对潜艇不可预知的故障情况。本文以潜艇垂直面运动模型作为研究的控制系统,提出了两种集成故障诊断与容错控制设计方案。其中,故障诊断技术中采用结合观测器与自适应参数跟踪的基于模型的故障诊断方法 ...
王菲
core  

HIV-1 Env三聚体抗原改造研究进展 [PDF]

open access: yes, 2019
HIV-1疫苗研发是当前艾滋病研究的一大热点,其病毒表面包膜糖蛋白Env三聚体介导病毒与细胞融合,是HIV-1疫苗研究的重要靶点。因此,设计并在体外表达类天然Env三聚体对HIV-1疫苗的研发具有重要的意义。近年来,Env三聚体研究取得了显著的进展。SOSIP、NFL2P、UFO等抗原改造方法实现了类天然Env三聚体的体外表达,逐步解决了改造抗原产量低、结构不稳定等问题,且表达的Env三聚体抗原能在动物免疫中诱导机体产生较高的中和抗体水平。Env三聚体改造方法促进了HIV-1疫苗的研究 ...
张芝晴, 李少伟, 沈鸿霖, 顾颖
core   +2 more sources

Design of module-N asynchronous counter consisting of low power double-edge-triggered D flip-flop(基于低功耗双边沿D触发器的任意进制异步计数器设计)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2007
从D触发器激励表入手,分别给出了采用单边沿D触发器和双边沿D触发器的2n进制异步加法计数器、减法计数器的设计方法.在此基础上,采用逻辑函数修改技术,通过实例讨论了基于单边沿D触发器和双边沿D触发器的异步任意进制计数器的设计,该设计方法方便,快速,具有一定的实用意义.
ZHAOMin-xiao(赵敏笑)   +2 more
doaj   +1 more source

Striking a Balance: Stakeholder Perceptions of Risk in Horse Racing

open access: yesEquine Veterinary Journal, EarlyView.
ABSTRACT Background Thoroughbred racing is a major industry, and in recent years, public concerns about equine safety have become more prominent, particularly in relation to on‐track injuries and fatalities. This has challenged the industry's social licence to operate (SLO).
Jessie McCarthy   +2 more
wiley   +1 more source

Numerical Simulation and Performance Analysis of a Scramjet Based on Three Dimensional Design [PDF]

open access: yes, 2015
本文以超燃冲压发动机为研究对象,将其中的各部件置于整个发动机的大环境下进行了设计与性能分析。 以流线追踪三维Busemann型面作为进气道,研究了其不启动时的流场特征以及非设计点下的性能。随后将该进气道与隔离段模型相结合进行了数值模拟,结果表明增加隔离段长度可提升极限反压,但长度越长,反压比提升的幅度越小;进气道来流的影响使隔离段在反压作用下的流场呈现不均匀性,反压越高,不均匀性越强,进气道所受的压阻也越大。 在燃烧室设计过程中,以均匀来流为条件分别考察了边界层厚度、狭缝抽吸 ...
方骁远
core  

Linking policy design and policy diffusion to advance both theories: Evidence from the elements, attributes, and adoptions of Uniform Law Commission model legislation

open access: yesPolicy Studies Journal, EarlyView.
Abstract We integrate the study of policy design and diffusion theoretically and empirically to advance each and raise novel research questions. We argue that policy dissemination is an important rationale in the design of model legislation and present a theory for how each of the five elements of design map onto the policy innovation attribute of ...
Joshua M. Jansa, Daniel J. Mallinson
wiley   +1 more source

Practice Research of Geometry Decoration Language In the Design of Illustrations [PDF]

open access: yes, 2016
本文通过对插画的理论知识和历史发展过程进行梳理分析,讨论和观察插画中的装饰语言,研究插画几何装饰语言体现并分析探讨其中的指导理论与方法实践。 插画的发展与时俱进,受时代审美思潮的影响,表现在技术上的进步和传达内容更具时代价值。不仅体现在形式表达上的类型多样化也体现在商业价值的丰富化。人类自古便开始对装饰语言进行实践尝试,早期的工匠从古代器物中探索实践装饰语言和装饰技术。现代社会中的装饰语言更多与设计结合在一起,带来更多元化的效果意义。插画的装饰语言通过从形状、线条 ...
王泉
core  

钢结构稳定设计——理论与实践

open access: yesJianzhu Gangjiegou Jinzhan, 2002
本文提出了实际工程结构的非线性理论设计和分析方法(NIDA),并以澳门回归纪念馆的设计为例,展示了本方法的优越性。在设计过程中,设计者无需假设K系数和有效长度,在结构分析完成后便可迅速完成设计,因此本文提出的方法既经济又便利。尽管对于钢框架在往复荷载及动力荷载作用下的弹塑性大位移分析已经非常成熟,但本文的方法开创了结构的非线性分析及设计的新纪元 ...
陈绍礼
doaj  

Institutions, in time: Designing feedback pathways for shared infrastructure transitions

open access: yesPolicy Studies Journal, EarlyView.
Abstract Electric utilities, challenged by a rapidly unfolding energy transition, use many informal institutions to bridge across technologies and sectors. Little is known, however, about how electric utility systems and other polycentric systems' institutions‐in‐use vary and evolve over time.
Matthew Grimley   +6 more
wiley   +1 more source

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