Mammalian oocytes undergo an asymmetrical first meiotic division, extruding half of their chromosomes in a small polar body to preserve maternal resources for embryonic development. To divide asymmetrically, mammalian oocytes relocate chromosomes from the center of the cell to the cortex, but little is known about the underlying mechanisms. Here, we show that upon the elevation of intracellular...

Inverters with innovative modular symmetrical and asymmetrical topologies were introduced in this study. Either an isolated DC source, additive or subtractive combination other sources is used to produce the multilevel output. This study presents a novel approach (an alternate quinary sequence) for selecting magnitude input dc voltage sources. Phase Opposition Disposition (POD) pulse width modu...

The photophysical properties of two newly synthesized photoactive compounds with asymmetrical D-pi-A structure and symmetrical D-pi-A-pi-D structure are investigated in different aprotic solvents by steady-state and femtosecond fluorescence depletion measurements. It is found that the asymmetrical DA compound has larger dipole moment change than that of the symmetrical DAD compound upon excitat...

Nowadays many well-known firms may produce similar products at different prices in order to remain in the competitive environment. The price differences may cause substitution condition which motivates the customers to substitute the similar cheaper product with an expensive one leading to an environment which is known as “customer-based price driven substitution”. This research proposes a new ...

STUDY DESIGN A cross-sectional observational study of three-dimensional (3D) cervical kinematics in 41 chronic neck pain (CNPs) patients and 156 asymptomatic controls. OBJECTIVE The objective was to investigate 3D cervical kinematics by analyzing and comparing quantitative and qualitative parameters in healthy subjects and CNPs. Furthermore, subgroups were formed to explore the influence of p...

It has been suggested that incongruence between signals for motor intention and sensory input can cause pain and other sensory abnormalities. This claim is supported by reports that moving in an environment of induced sensorimotor conflict leads to elevated pain and sensory symptoms in those with certain painful conditions. Similar procedures can lead to reports of anomalous sensations in healt...

BACKGROUND We set out to solve two inherent problems in the study of animal spatial cognition (i) What is a "place"?; and (ii) whether behaviors that are not revealed as differing by one methodology could be revealed as different when analyzed using a different approach. METHODOLOGY We applied network analysis to scrutinize spatial behavior of rats tested in either a symmetrical or asymmetric...