Instability in Jacobians is determined by the presence of an eigenvalue lying right half plane. The coefficients characteristic polynomial contain information related to specific matrix elements that play a greater destabilising role. Yet circuits, or cycles, constructed multiplying these together, form only subset all cycles comprising given system. This paper looks at three sign-restricted fo...

AIM: To assess individual subjective chronotypic properties in residents of Khanty-Mansiysk under the influence such biotropic and social stress factors as regular daytime aperiodically presented shift nighttime employment.
 MATERIALS AND METHODS: This study involved students (100 girls 53 boys) Khanty-Mansi Autonomous Okrug Yugra with a daily load employees Ambulance station (31 women 26 ...

Background: The aim of this retrospective study is to investigate the cumulative live birth rate (CLBR) following one or more completed in vitro fertilization (IVF) cycles (up to 6 cycles) stratified by maternal age and type of infertility. Materials and Methods: In this retrospective study, five hundred forty-seven women who received 736 fresh ovarian stimulation/embryo transfer cycles between...