A gas pressure measurement device is built based on the refractive index method, and range from 10 kPa to 100 kPa, tested by a dual-cavity comparison method. The temperature of two vacuum chambers separately controlled cavities are connected ensure that pressures in same. Using high-purity nitrogen (6N) as medium, under condition different pressures, comparative measurements conducted. results ...

Megathrust earthquakes cause tsunamis that can destroy coastal structures and damage buildings, resulting in injuries deaths. To prevent these consequences reduce the risk of failure structures, it is essential to understand exact mechanism structure failure. Sub-nappe air cavity pressure during overflow a vertical structure, which main topic this research, increase but had not yet been quantif...

Cavity quantum electrodynamics (QED), the study of interaction between quantized emitters and photons confined in an optical cavity, is important tool for science computing, networking, synthetic matter. In atomic cavity QED, this approach typically relies upon ultrahigh vacuum chamber that hosts a cold trapped ensemble cavity. Upgrading necessitates months-long laborious process removing exter...

The mechanisms by which the contracting myocardium exerts extravascular forces (intramyocardial pressure, IMP) on coronary blood vessels and by which it affects the coronary flow remain incompletely understood. Several myocardium-vessel interaction (MVI) mechanisms have been proposed, but none can account for all the major flow features. In the present study, we hypothesized that only a specifi...

Injection molders commonly use a ram position setting to control switchover. As in-mold sensors have become more widespread, using them to control switchover ensures more consistent part quality than machine-based control. Herein we explore several control strategies applied to an array of different mold configurations and materials. We evaluate each method's ability to minimize in-cavity varia...

In our continuous wave cavity ring-down spectroscopy (CW-CRDS) experiments, we have often observed that the decay time constant drops to a lower value at some cavity lengths or some intercavity pressures. The resulting instabilities lead to a reduction in the sensitivity of our CRDS system. We have deduced that the cause of this noise is the coupling between the TEM(00) mode that the laser exci...

Following neurulation, the anterior end of the neural tube undergoes a dramatic increase in size due mainly to the enlarging of the brain cavity. This cavity is filled with so-called neural tube fluid (NTF), whose positive pressure has been shown to play a key role in brain morphogenesis. This fluid contains a water-soluble matrix, rich in chondroitin sulfate (CS), which has been proposed as an...