Mikrosvět elementárních částic, atomů a procesů odehrávajících se mezi nimi je plný podivností. Částice může projít naráz dvěma různými štěrbinami, fotony mohou být navzájem provázané na obrovské vzdálenosti, kočka (alespoň ona pověstná Schrödingerova) může být zároveň živá i mrtvá... Může pozoruhodný kvantový svqt dovolit i stav, kdy by nějaká látka bya sočasně pevná a supratekutá? A mohou kvantové supratekuté systémy pomoci osvětlit jeden z posledních nevyřešených problémů klasické fyziky - turoblenci? Vědci, včetně českých, intenzivné hledají odpovědi. and Jana Olivová.
Tornádo zasáhlo území několika obcí na jižní Moravě ve večerních hodinách ve čtvrtek 24. června 2021. Ačkoliv se jednalo o relativně malé území, rozsahem škod šlo o mimořádnou událost nevídaných rozměrů. Velké množství lidí se ocitlo v přímém ohrožení života svého a svých blízkých. V psychologii nazýváme takovou událost jako potenciálně traumatizující a ze zkušenosti víme, že může mít závažné dopady na lidskou psychiku. Článek má za cíl představit, jak fungoval systém psychosociální krizové pomoci a spolupráce zajišťovaný ze strany Integrovaného záchranného systému ČR, který tvořil jádro psychosociální pomoci v akutní fázi katastrofy. Je uvedena návaznost na další organizace, které mají svou funkci především ve fázi stabilizace, ve střednědobé a dlouhodobé péči o zasažené osoby. Považujeme také za potřebné zopakovat principy psychosociální pomoci při mimořádných událostech. and The tornado hit the territory of several municipalities in South Moravia in the evening on Thursday, June 24, 2021. Although it was a relatively small area, the extent of the damage was extraordinary and of unprecedented proportions. Many people found themselves in direct danger of themselves and their loved ones. In psychology, we call such an event potentially traumatic, and we know from experience that it can have serious effects on the human psyche. The article aims to present how the system of psychosocial crisis intervention and psychological first aid provided by the Integrated Rescue System of the Czech Republic worked. This psychosocial assistance in the acute phase of a disaster builds the core of psychosocial help. There is a link to other organizations, which have their function mainly in the stabilization phase, in the medium and long-term care of the affected persons. We also consider it necessary to repeat the principles of psychosocial assistance in emergencies.
The contribution is a continuation of [2] which deals with analytic solution of torsion of a bar with simply connected profile, i.e. profile without holes. In this paper the case of multiply connected profile, i.e. profile with holes, is studied. The stress-strain analysis leads to the Airy stress function Φ. On boundary of each hole the function Φ has prescribed an unknown constant value completed with an integral condition. The mathematical model is also derived from the variational principle.
The second part of the paper contains solutions for the ring profile and for comparison also for incomplete ring profiles including the ‘broken‘ ring profile. The results are compared in tables and pictures. and Obsahuje seznam literatury
The contribution deals with strain-stress analysis of torsion of a non-circular bar. Mathematical model is exactly derived and solutions are introduced and visualised for cases of triangular, rectangular and some other profiles. and Obsahuje seznam literatury
The objective of our study was to assess the influence of mechanical ventilation on healthy body organs. Fifteen piglets (aged 6 weeks, 19-27 kg) were anesthetized, instrumented, and divided into three groups: Group A - spontaneously breathing, group B - mechanically ventilated with tidal volume 6 ml/kg, and group C - ventilated with tidal volume 10 ml/kg for 12 hours. The parameters of lung, heart, liver and kidney functions neurohumoral regulation and systemic inflammatory reaction were recorded initially (time-1) and after 12 hours (time-12) of mechanical ventilation. At the onset of experiment (time-1) the levels of soluble adhesive molecules were higher (CAM; P<0.01), glomerular filtration index and free water clearance were lower (P<0.05) in both ventilated groups than in group A. Right ventricle myocardial performance index was higher (RIMP; P<0.05) in group C when compared with group A. Levels of CAM (P<0.05) and creatinine clearance (P<0.01) were higher, free water clearance was lower (P<0.05) in group C when compared to group B. At time-12 the RIMP (P<0.05) and levels of CAM were increased (P<0.01), creatinine clearance was decreased (P<0.05) in both ventilated groups compared to the same parameter at time-1. Ventilation index was higher (P<0.05), and hypoxemic index was lower (P<0.01) in group C when compared to group B. In conclusion, this study showed that mechanical ventilation induced changes compatible with early inflammatory response in healthy animals. Higher tidal volumes had detrimental effect on ventilatory parameters, reduced myocardial performance and potentiated adverse reaction of other organs., J. Kobr ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy
Total carotenoids assessed spectrophotometrically in crude extracts may be considerably overestimated when high contents of phenolic compounds are co-extracted. In this case, the absorbance tails of phenolics extend well into the blue part of the spectrum, interfering with carotenoid estimation. Extracts of phenolic-rich organs, with a low ratio of photosynthetic to heterotrophic and/or supportive cells (for example, stems or twigs) are vulnerable to such pitfalls and may need chromatographic separation of carotenoids. and E. Levizou, Y. Petropoulou, Y. Manetas.