Transient Response Analysis of Multi-layer Sloshing Fluid in LNG Tank

The stratified LNG is the potential cause of rollover, so the analysis of the interface behavior is very important. In this work, a three-layer dynamic simulation model of BOG, LNG, and liquid nitrogen of sloshing stratified LNG in a tank was built. The transient behaviors of the layers were simulated, and the effects of factors such as the period of sloshing (T = 0.2, 0.4, 0.6, 0.8 and 1.0 s) and the amplitude of sloshing (A=0.01~0.06 rad) were analyzed. It was found that instability of the interface was aggravated over time. There was a specific period of sloshing in which the layers of fluid were relatively stable, away from this period the fluid layer became less stable. The influence of sloshing amplitude on the behavior of the interface presented a wave characteristic. The simulation results of the coupling with different sloshing periods and sloshing amplitude showed that the interface behavior of stratified sloshing was the most severe when the sloshing period was 0.2 s and the sloshing amplitude was 0.05 rad.

Jumping Wave Characteristic during Low Plasticity Burnishing Process

During the low plasticity burnishing process of soft materials such as carbon steel with a hardness of up to 40 HRC (Rockwell grade) a raised structure of the material known as the Jumping Wave forms in front of the tool roll. This phenomenon significantly disturbs the burnishing process, but is very poorly described in the literature. This article presents studies of this phenomenon on the example of burnished 1.0562 steel. The research concerns the changes in the surface structure of the processed material as well as changes in the structure of the material during this process. The research shows changes in the geometric structure of the surface made in the 3D system and their parametric description. Moreover, the work presents an analysis of the metallographic structure in the tool zone. The research showed occurrence of material slippages in the wave in front of the tool, which creates an additional structure on the surface. These tests make it possible to better understand the process of changes that take place in the surface layer of the processed element in the low plasticity burnishing process.

Using Wave Characteristic Analysis to Study T2D Patient’s Personality Traits and Psychological Behavior (GH-Method: Math-Physical Medicine)

The author has contemplated a specific question: Why do some type 2 diabetes (T2D) patients choose to face serious complications, including death, rather than change their lifestyle in order to control their diabetic conditions? This paper provides his first attempt to understand the reasoning from a psychological viewpoint by using a quantitative wave characteristic analysis. It also links T2D patient’s psychological issues and his physiological conditions together in a quantitative manner.

Using Wave Characteristic Analysis to Study T2D Patient’s Personality Traits and Psychological Behavior (GH-Method: Math-Physical Medicine)

The author has contemplated a specific question: Why do some type 2 diabetes (T2D) patients choose to face serious complications, including death, rather than change their lifestyle in order to control their diabetic conditions?

Are Epileptic Spasms a Seizure Type for the Insular Region?

Two patients with insular and striatal postnatal scar had epileptic spasms (ES) that were asymmetrical and the only seizure type, whereas none of the usual ictal symptoms of insular seizures occurred. Ictal electroencephalography (EEG) showed the high-amplitude slow-wave characteristic of ES. Vigabatrin remained efficient for over 4 years for one patient and right into the third decade for the other one. Such ES are distinct from infantile and late onset spasms. Furthermore, these observations suggest that in ES insular epilepsy triggers paroxysmal activation of the striatum, and that vigabatrin inhibits the striatal startle motor program, thus interrupting the corticostriatal loop.