Results 131 to 140 of about 34,568 (304)

Effects of cardiac preload reduction and dobutamine on hepatosplanchnic blood flow regulation in porcine endotoxemia

, 2012
Insufficient cardiac preload and impaired contractility are frequent in early sepsis. We explored the effects of acute cardiac preload reduction and dobutamine on hepatic arterial (Qha) and portal venous (Qpv) blood flows during endotoxin infusion.
Bracht, Hendrik, Balsiger, Bruno M, Kolarova, Anna, Brander, Lukas, Jakob, Stephan M, Porta, Francesca, Takala, Jukka, Knuesel, Rafael, Ma, Yingmin, Feng, Hong-Qiang   +9 more
core   +1 more source

A New Paradigm for Understanding the Rheology and Processability of Poly(p‐Phenylene Terephthalamide) Liquid‐Crystalline Solutions

Journal of Applied Polymer Science, EarlyView.
Kevlar is traditionally modeled as a rigid‐rod polymer, yet rheological behavior deviates from this assumption. The review introduces a novel “twist‐tie” entanglement theory for aramid polymer chains in the nematic liquid crystal state, providing a molecular explanation for deviations from rigid‐rod models. Understanding twist‐tie entanglement dynamics
Emma Egli, Jacob L. Pretko, Christopher W. Seay, Steven R. Lustig   +3 more
wiley   +1 more source

Spindle Bearing Preload Control Using NI MyRIO

Applied Sciences
The article presents an application for controlling the preload of bearings in a model spindle system. The bearing preload will be implemented using piezoelectric elements, which allow for changing the preload of bearings during spindle operation, which ...
Paweł Turek
doaj   +1 more source

Influences of preload on the friction and wear properties of high-speed instrument angular contact ball bearings

, 2017
For starved-oil or solid lubrication of high-speed instrument angular contact ball bearings, friction heating and wear are the main reasons of bearing failures.
Tao Zhang, Xiaoyang Chen, Jiaming Gu, Zhengliang Wang   +3 more
semanticscholar   +1 more source

Continuous Sewing Machine‐Like Suture Provides Higher Failure and Yield Load Compared to Traditional Techniques for Meniscal Root Repair in a Biomechanical Porcine Model

Arthroscopy, EarlyView.
Purpose To evaluate the biomechanical performance of the sewing machine‐like suture (SMS) technique against three established techniques (two cinch‐loop (TCL), modified Mason‐Allen (MMA), and double Mason‐Allen (DMA)) for transtibial pull‐out repair of posterior medial meniscal root tear (PMMRT) in a porcine model.
Yizhong Peng, Wenbo Yang, Yi Li, Chunqing Meng, Hong Wang, Wei Huang   +5 more
wiley   +1 more source

Simulace provozu bezvůlového převodu ozubenými koly s elastickými prvky [PDF]

ACC Journal, 2011
Článek obsahuje popis jednoho z principů bezvůlového převodu ozubenými koly. Detailně je řešena konstrukce bezvůlové převodovky s předlohovými hřídeli. Vůle v záběrech ozubených kol a v ložiscích jsou vymezeny pomocí předepjaté torzní tyče.
Vojtěch Klouček
doaj  

Blood pressure effects of SGLT2 inhibitors and GLP‐1 receptor agonists: Mechanisms, trial evidence and Real‐world data

British Journal of Clinical Pharmacology, EarlyView.
SGLT2 inhibitors and GLP‐1 receptor agonists modestly lower blood pressure across diverse patient populations, including those without diabetes. These effects appear largely independent of glycaemic control and offer additive value in high‐risk patients with overlapping comorbidities.
Andrej Belančić, Yusuf Ziya Sener, Marijana Vučković, Joseph Edgar Blais, Almir Fajkić, Emina Sher, Mislav Radić, Josipa Radić   +7 more
wiley   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

On Optimal Bolt Preload

, 1976
A linear model of a bolted joint subject to alternating tension is directly correlated with a modified Goodman diagram. It is shown that bolt preload can have a beneficial or adverse effect.
G. A. Fazekas
core   +1 more source

Rock mechanical properties under reconstructed deep in situ thermo–hydro–mechanical conditions: Implications for CO₂‐related injection scenarios

Deep Underground Science and Engineering, EarlyView.
The graphical abstract illustrates a reconstructed in situ thermo‐hydro‐mechanical (THM) framework in which porosity serves as the central variable linking stress, pore pressure, and temperature to evolving mechanical properties of rocks. Under burial conditions, in situ stress, pore pressure, and temperature jointly govern volumetric strain and ...
Mingyuan Lu, Jun Wang, Zixiong Qi, Ruixuan Chen, Hongtao Wang, Hongwei Zhou   +5 more
wiley   +1 more source