BACKGROUND Analysis of heart rate variation (HRV) has become a popular noninvasive tool for assessing the activities of the autonomic nervous system (ANS). HRV analysis is based on the concept that fast fluctuations may specifically reflect changes of sympathetic and vagal activity. It shows that the structure generating the signal is not simply linear, but also involves nonlinear contributions...

Raman spectroscopy has proven to be a powerful tool for the highly efficient and automated determination of liquid-liquid equilibria (LLE) in parallel microfluidic flows. However, stable flow regime cannot established numerous industrially relevant aqueous-organic LLE systems since they tend form plug These flows have advantage that inner circulations plugs enhance mass transfer, leading much f...

Unlike for lecturers in Engineering, Medicine, Computer Science, and Agriculture Biology Sciences, Indonesian Social Sciences Humanities including Linguistics Language Education (LLE), publishing research articles reputable or indexed international journals is very difficult. The possible cause of the difficulty their unfamiliarity with correct appropriate use rhetorical style as expected by jo...

OBJECTIVES Clinical and experimental research studies have demonstrated that the emotional experience of anxiety impairs heart rate variability (HRV) in humans. The present study investigated whether changes in state anxiety (SA) can also modulate nonlinear dynamics of heart rate. METHODS A group of 96 students volunteered to participate in the study. For each student, two 5-minute recordings...