Abstract We analyze the characteristics of atmospheric variations over tropical South America using pattern recognition framework weather typing or circulation patterns (CPs). During 1979-2020, nine CPs are defined in region, a k-means algorithm based on daily unfiltered 850 hPa winds 0035°N-30°S, 90°W-30°W. primarily interpreted as stages annual cycle low-level circulation. identified three “w...

Background: Changes in the visual environment and thereby, spatial orientation, can induce postural instability leading to falls. Virtual reality (VR) has been used expose individuals virtual environments (VE) that increase threats. Claustrophobia is an anxiety disorder categorized under situational phobias such threats a VE. Purpose: The purpose of study was investigate if VR-generated claustr...

Bearing in mind the centuries-old traditional use of chamomile, but also increasing demand for its products modern industry, oriented toward sustainable development, there are efforts efficient extraction high-value compounds this plant, as well obtaining with added value. With that goal, conventional and contemporary separation techniques were applied work. Both hydrodistillation processes (HD...

The irreducible finite-dimensional representations of quantum affine algebras Uq(ĝ) have been studied from various viewpoints, [AK], [CP1], [CP3], [C], [CP4], [FR], [FM], [KR], [KS]. These representations decompose as a direct sum of irreducible representations of the quantized eneveloping algebra Uq(g) associated to the underlying finite-dimensional simple Lie algebra g. But, except for a few ...

The catechol-O-methyltransferase (COMT) Val(158)Met polymorphism impacts cortical dopamine (DA) levels and may influence cortical electrical activity in the human brain. This study investigated whether COMT genotype influences resting-state electroencephalogram (EEG) power in the frontal, parietal and midline regions in healthy volunteers. EEG recordings were conducted in the resting-state in 1...

Humans are surrounded by sources of daily exposure to power-frequency (60 Hz in North America) magnetic fields (MFs). Such time-varying MFs induce electric fields and currents in living structures which possibly lead to biological effects. The present pilot study examined possible extremely low frequency (ELF) MF effects on human neuromotor control in general, and physiological postural tremor ...

atmospheric circulation patterns are responsible for drought and flood occurrences around the globe specifically in moderate mid latitude climates. while some circulation patterns are responsible for wet spells and floods as well, the drought events can be attributed to some other circulation patterns. therefore, identification and distinction of dry/wet producing patterns and the geographical ...