Results 1 to 10 of about 693,248 (166)

Comparison between clinical evaluations and laboratory findings and the impact of biofilm on antimicrobial susceptibility in vitro in canine otitis externa

open access: yesVeterinary Dermatology, Volume 34, Issue 6, Page 586-596, December 2023., 2023
Background – In clinical practice, the diagnosis of otitis externa (OE) normally is based on otoscopic examination and cytological findings, followed by empirical treatment with topic drugs. Biofilm‐producing bacteria are frequently present in OE, even if its presence is often underdiagnosed. Hypothesis/Objectives – The primary aim of this study was to
Luca Luciani   +6 more
wiley   +1 more source

Electroacupuncture reduces blood glucose by regulating intestinal flora in type 2 diabetic mice 电针通过调节2型糖尿病小鼠肠道菌群降低血糖

open access: yesJournal of Diabetes, Volume 14, Issue 10, Page 695-710, October 2022., 2022
Highlights Electroacupuncture (EA) regulates the intestinal flora by promoting intestinal motility. EA regulated the intestinal flora to reduce the level of systemic inflammation. EA lowering the blood glucose by the IKKβ/NF‐κB‐JNK‐IRS‐1‐AKT signal pathway.
Jing An   +7 more
wiley   +1 more source

Value of cervical electrical impedance spectroscopy to predict spontaneous preterm delivery in asymptomatic women: the ECCLIPPx prospective cohort study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 58, Issue 2, Page 293-302, August 2021., 2021
ABSTRACT Objectives Preterm birth (PTB) accounts for two‐thirds of deaths of structurally normal babies and is associated with substantial lifetime healthcare costs. Prevention of PTB remains limited by the modest accuracy of prediction methods, namely transvaginal ultrasound (TVS) cervical length (CL) measurement and quantitative cervicovaginal fetal ...
D. O. C. Anumba   +4 more
wiley   +1 more source

特高压变压器中性点经小电抗接地及其过电压保护研究

open access: yesDianci bileiqi, 2022
特高压变压器中性点经小电抗接地在降低线路单相短路电流的同时,提高了中性点的过电压水平,为中性点配置合适的过电压保护十分重要。本研究运用EMTP对华东某特高压变电站进行等值建模,对变压器中性点串接多个阻值小电抗后限制短路电流能力进行量化分析,从而确定中性点小电抗的最佳取值。根据工程实际,变压器中性点串接小电抗后,在中性点并联氧化锌避雷器和放电间隙可以提供一定的过电压保护。由于避雷器动作后残压过高,会使放电间隙击穿放电,考虑用可控避雷器替代氧化锌避雷器以实现最佳的绝缘配合。
赵宏成   +4 more
doaj  

同塔多回线路非全相运行谐振特性研究

open access: yesGaoya dianqi, 2021
带并联电抗器的同塔多回输电线路,在线路故障引起的非全相运行期间,由于并联电抗器和线路电容间可能构成串联回路,若参数匹配将发生串联谐振引起高幅值长时间的谐振过电压,需对带并联电抗器的同塔多回输电线路谐振问题进行研究分析。建立了同塔多回输电线路耦合模型,变换得到各故障状态非全相运行期间的等效阻抗模型,并推导出线路各非全相运行状态下的谐振频率计算表达式,通过频率扫描验证理论分析的正确性。为更直观的反应并联电抗器与同塔多回输电线路谐振的关系,作出并联电抗器补偿度和中性点小电抗的谐振关系曲线 ...
汪沨   +5 more
doaj  

车载油浸式空心电抗器稳态电场计算和分析

open access: yesGaoya dianqi, 2020
车载油浸式空心电抗器面临稳态工作电压可达1 100 k V,为保证安全运行,文中分析了稳态情况下车载油浸式空心电抗器的电场强度分布。为减小有限元建模的复杂程度,文中建立了车载油浸式空心电抗器的简化有限元模型并验证了模型的正确性。电场计算结果表明,车载油浸式空心电抗器的内部绝缘油是保证稳态安全运行,不发生放电的重要绝缘组件。电抗器的环氧树脂外壳形状需合理设置以减小电介质极化带来的高电场强度。加装均压球能使车载油浸式空心电抗器的电场强度峰值减小73.12%,进一步减小放电风险的同时 ...
赵科   +5 more
doaj  

基于阻抗谱重构技术的电池健康状态快速估计方法 [PDF]

open access: yes全球能源互联网
电池健康状态(state of health,SOH)是保证系统安全稳定运行的关键,健康状态估计不准将影响电池的使用性能,甚至引发电池滥用等问题。电池电化学阻抗谱通过宽频范围内电池的阻抗特征来反映其内部的电化学过程,蕴含了大量电池老化信息,已经逐渐成为分析锂离子电池性能的有力工具。然而,传统的电池阻抗谱测试方法耗时长、成本高昂。为此,以实现锂离子电池的精细化检测与健康状态快速评估为目标,围绕基于电化学阻抗谱重构技术的电池健康状态估计方法展开研究。通过逆重复最大长度序列设计多频电流激励信号 ...
侯林涛   +5 more
doaj   +1 more source

Evaluation of the effect of dielectric property of blood cell responses to hypoxia by the impedance method(用阻抗法评价血液细胞介电性能对低氧的反应)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2009
利用阻抗方法观察低氧对血液细胞介电性能的影响,将实验动物分成平原对照组和模拟低氧组,采用Agilent 4294A阻抗分析仪测量小鼠血液细胞交流阻抗,通过细胞介电谱、Cole-Cole图、介电损耗因子频谱、损耗角正切频谱以及Cole-Cole方程的曲线拟合分析,得到如下结果:(1)小鼠模拟海拔5 km低氧4周后,模拟高原组的低频介电常数ε1和介电增量Δε较平原对照组分别增加57%和59%.
ZHANGHong-bo(张红波)   +2 more
doaj   +1 more source

Designing “Sphere/Network” Hierarchical Dielectric Loss Structure for Efficient Electromagnetic Wave Absorption

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Electromagnetic wave absorption materials require high dielectric loss and excellent impedance matching performance. However, current conventional biomass‐derived electromagnetic wave absorption materials are still limited by low electrical conductivity and a single structure.
Yue Zhang   +9 more
wiley   +1 more source

Anisotropic MoS2/SiC Aerogels: A Multifunctional Platform for Broadband Electromagnetic Stealth and Thermal Management

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song   +4 more
wiley   +1 more source

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