scholarly journals Volume Measurement of Particle Layers in a Container by Using Helmholtz Resonance

2021 ◽  
Vol 66 (1) ◽  
pp. 91-95
Author(s):  
Shintaro INOUE ◽  
Yasumaru HIRAI ◽  
Shio INAGAKI ◽  
Eiji INOUE ◽  
Takashi OKAYASU ◽  
...  
Keyword(s):  
Volume Measurement ◽  
Helmholtz Resonance

Influence Study of Gas Pressure on the Volume Measurement of Engine Combustion Chamber by Using Helmholtz Resonance

2019 ◽  
Author(s):  
Kun Chen ◽  
Sun Jin ◽  
Shun Liu ◽  
Ang Tian ◽  
Wei Mo
Keyword(s):  
Combustion Chamber ◽  
High Efficiency ◽  
Great Influence ◽  
Engine Performance ◽  
Volume Measurement ◽  
Automobile Engine ◽  
Closed Cavity ◽  
Helmholtz Resonance ◽  
Resonance Principle ◽  
The Relationship

Abstract The combustion chamber of automobile engine is a place where gasoline is burned to provide power for automobile driving and its size has a great influence on engine performance. However, because of the irregularity of the combustion chamber, it is difficult to measure it accurately and efficiently. The principle of Helmholtz resonance reveals the functional relationship between the volume and the resonant frequency of the closed cavity. Having used the Helmholtz resonance principle, the equipment for measuring the combustion chamber of automobile engine accurately and efficiently has been built. The conditions under which the cavity is stimulated to produce resonance are explored, the relationship between volume and the pressure is deduced. Experiments are designed to verify the correctness and accuracy of the measurement. The measuring instrument is improved and the accuracy of the volume measurement is increased. The application of the high precision and high efficiency of non-contact acoustic principle in cavity volume dynamic measurement has been realized.

Placental volume measurement by 3D-ultrasound in the first trimester and prediction of fetal growth

2008 ◽  
Vol 68 (S 01) ◽  
Author(s):  
B Meurer ◽  
B Meurer ◽  
N Dinkel ◽  
N Hart ◽  
J Siemer ◽  
...  
Keyword(s):  
Fetal Growth ◽  
First Trimester ◽  
3D Ultrasound ◽  
Volume Measurement ◽  
Placental Volume

Methods and importance of volume measurement in reconstructive and aesthetic breast surgery

2014 ◽  
Vol 155 (11) ◽  
pp. 407-413 ◽  
Author(s):  
Csaba Kunos ◽  
Gusztáv Gulyás ◽  
Pál Pesthy ◽  
Eszter Kovács ◽  
Zoltán Mátrai
Keyword(s):  
Magnetic Resonance ◽  
Surgical Planning ◽  
Volume Measurement ◽  
Tumor Removal ◽  
Breast Asymmetry ◽  
Breast Parenchyma ◽  
Implant Selection ◽  
The Difference ◽  
Aesthetic Breast ◽  
Measured Volume

Volume measurment of the breast allows for better surgical planning and implant selection in breast reconstructive and symmetrization procedures. The safety and accuracy of tumor removal, in accordance with oncoplastic principles, may be imporved by knowing the true breast- and breast tumor volume. The authors discuss the methods of volume measurement of the breast and describe the method based on magnetic resonance imaging digital volume measurment in details. The volume of the breast parenchyma and the tumor was determined by processing the diagnostic magnetic resonance scans, and the difference in the volume of the two breasts was measured. Surgery was planned and implant selection was made based on the measured volume details. The authors conclude that digital volume measurement proved to be a valuable tool in preoperative planning of volume reducing mammaplasty, replacement of unknown size implants and in cases when breast asymmetry is treated. Orv. Hetil., 2014, 155(11), 407–413.

Tunable underwater acoustic metamaterials via quasi-Helmholtz resonance: From low-frequency to ultra-broadband

2021 ◽  
Vol 118 (7) ◽  
pp. 071904
Author(s):  
Mingyu Duan ◽  
Chenlei Yu ◽  
Fengxian Xin ◽  
Tian Jian Lu
Keyword(s):  
Low Frequency ◽  
Acoustic Metamaterials ◽  
Underwater Acoustic ◽  
Helmholtz Resonance

Right ventricular volume measurement with single-plane Simpson's method based on a new half-circle model

2004 ◽  
Vol 94 (2-3) ◽  
pp. 289-292 ◽  
Author(s):  
Wei Cui ◽  
Hirofumi Anno ◽  
Takeshi Kondo ◽  
Yuyin Guo ◽  
Takahisa Sato ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Ventricular Volume ◽  
Volume Measurement ◽  
Right Ventricular Volume ◽  
Single Plane ◽  
Circle Model

Blood Volume Measurement in Baboons: Simultaneous Estimation of Red Cell Volume and Plasma Volume

1985 ◽  
Vol 14 (6) ◽  
pp. 345-356
Author(s):  
Michael G. Garner ◽  
Andrew F. Phippard ◽  
John S. Horvath ◽  
Geoffrey G. Duggin ◽  
David J. Tiller
Keyword(s):  
Cell Volume ◽  
Blood Volume ◽  
Plasma Volume ◽  
Volume Measurement ◽  
Simultaneous Estimation ◽  
Red Cell ◽  
Red Cell Volume ◽  
Blood Volume Measurement
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