Results 111 to 120 of about 42,529 (238)

Experimental study on the effect of chitosan dosage on flocculation efficiency of water extract of white peony(壳聚糖投加量对白芍水提液絮凝效果的影响研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2017
采用紫外/可见分光光度计、激光粒度分析仪、微电泳仪等,探究壳聚糖投加量对白芍水提液絮凝率、分形维数、粒度分布、ζ电位的影响.实验结果显示,壳聚糖投加量为3.2 mL(0.31 g• L-1)时,絮凝率达到最大值80.88%,此时总黄酮损失率为10.67%,上清液平均粒径为5.42 µm,ζ最接近零电位,为—1.168 2 mV,絮体分形维数为1.463;应用激光粒子测速(PIV)系统对絮体的沉降过程进行分析,建立了沉降过程的数学模型,絮凝过程的最大沉降速度为0.324 1 mm • s-1 ...
ZHANGJianwei(张建伟)   +3 more
doaj   +1 more source

Experimental investigation of airflow shielding using the induced flow generated by a dielectric barrier discharge plasma actuator

open access: yesNihon Kikai Gakkai ronbunshu
This study investigates the potential of airflow shielding by utilizing the induced flow from a dielectric barrier discharge plasma actuator (DBD-PA).
Kazushi KOBAYASHI   +3 more
doaj   +1 more source

On Improvement of Characteristic Instability and Internal Flow in Mixed Flow Pumps

open access: yesJournal of Fluid Science and Technology, 2008
The difference of pump characteristics between two kinds of mixed flow pumps with low specific speed of 350 (min-1, m3/min, m), which have the same impeller and the different diffuser vanes, is presented in the present paper.
Masahiro MIYABE   +4 more
doaj   +1 more source

Application of particle image velocimetry to wind turbine wakes

open access: yes, 1993
Wind turbine performance is critically dependent on the geometry of the rotor wake. Acquisition of detailed wake data is of major importance for further development of wind turbine studies.
Whale, J.
core  

Real-World Impact of SGLT2 Inhibitors on Systemic Inflammation in Type 2 Diabetes: A Composite Biomarker-Based Evaluation

open access: yesSakarya Tıp Dergisi
Background: Chronic low-grade inflammation is increasingly recognized as a key contributor to the pathophysiology and complications of type 2 diabetes mellitus (T2DM).
Nizameddin Koca, Nazif Yalçın
doaj   +1 more source

Flow Structure of a Coaxial Circular Jet with Axisymmetric and Helical Instability Modes

open access: yesJournal of Fluid Science and Technology, 2011
The flow structures in a coaxial jet with axisymmetric and helical instability modes for a comparatively low Reynolds number were investigated. The flow visualization and the measurements of velocities were carried out in an open water tank. In addition,
Takahiro KIWATA   +4 more
doaj   +1 more source

SynthPix: A lightspeed PIV image generator

open access: yesSoftwareX
We describe SynthPix, a synthetic image generator for Particle Image Velocimetry (PIV) with a focus on performance and parallelism on accelerators, implemented in JAX. SynthPix produces PIV image pairs from prescribed flow fields while exposing a configuration interface aligned with common PIV imaging and acquisition parameters (e.g., seeding density ...
Antonio Terpin   +3 more
openaire   +2 more sources

Investigation of wind turbine flow and wake [PDF]

open access: yes, 2014
This paper is dedicated to the investigation and analysis of wind turbine wake. An experimental work is undertaken in wind tunnel on a horizontal axis wind turbine model.
MASSOUH, Fawaz, DOBREV, Ivan
core  

Benchmarking PIV systému

open access: yes, 2021
Bakalářská práce se zabývá měřením rychlostních polí metodou Particle Image Velocimetry(PIV) na definované trysce. Cílem této práce je přinést shrnutí metody PIV, navrhnouta uskutečnit experiment, který by ověřil správnost měřicí metody.
Rampas, Luboš
core  

Comparison of Simple and Conditional Averaging Methodology Based on Results of the HART II Wind Tunnel Test

open access: yes, 2007
Based on test results of the Higher Harmonic Control Aeroacoustic Rotor Test (HART II), performed in the German/Dutch wind tunnel (DNW) in 2001 the conditional averaging methodology is shown to be mandatory to proper average essentially periodic data ...
van der Wall, Berend G.   +1 more
core  

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