The diurnal variations in the factors of photosynthesis reduction under well-watered greenhouse conditions remain poorly understood. We conducted measurements gas exchange and chlorophyll fluorescence strawberries (Fragaria × ananassa Duch.) for three sunny days. Quantitative limitation analysis was also to investigate photosynthetic limitations [stomatal (SL), mesophyll (MCL), biochemical (BL...

Výzkum zaměřený na léčbu onemocnění COVID-19 vedl k použití hydroxychlorochinu (HCQ) jako jedné z možností léčby. Účinnost HCQ lze zvýšit jeho podáváním v kombinaci s azitromycinem (AZM). Hydroxychlorochin však může spouštět arytmie podobě prodloužení intervalu QT. Přidání AZM by rovněž mohlo riziko Protože mechanismus účinku těchto látek stále není př...

Úvod: PřidělovanĂĄ oĹĄetřovatelskĂĄ péče je jednĂ­m z termĂ­nĹŻ popisujĂ­cĂ­ch fenomĂŠn, kterĂ˝ se objevuje v klinickĂŠ praxi a souvisĂ­ s globĂĄlnĂ­m nedostatkem sester. Na zĂĄkladě hodnocenĂ­ oĹĄetřovatelskĂ˝ch intervencĂ­ sestry potvrzujĂ­ frekvenci mĂ­ru vĂ˝skytu přidělovanĂŠ péče. Úzce spokojenostĂ­ fluktuacĂ­ sester praxi. CĂ­l: CĂ­lem vĂ˝zkumu bylo zjistit vĂ˝skyt dĹŻvody oĹ...

We consider a class of Gaussian layered networks where a source communicates with a destination through L intermediate relay layers with N nodes in each layer in the presence of a single eavesdropper which can overhear the transmissions of the nodes in the last layer. For such networks we address the question: what fraction of maximum secure achievable rate can be maintained if only a fraction ...

We present an affine-invariant random walk for drawing uniform random samples from a convex body K Ă Rn for which the maximum volume inscribed ellipsoid, known as John’s ellipsoid, may be computed. We consider a polytope P “ x P Rn ˇ̌ Ax ď 1 ( where A P R as a special case. Our algorithm makes steps using uniform sampling from the John’s ellipsoid of the symmetrization of K at the current point....

Büchi’s theorem, in establishing the equivalence between languages definable in S1S over pP,ăq and the ω-regular languages also demonstrated that S1S over pP,ăq is no more expressive than its existential fragment. It is also easy to see that S1S over pP,ăq is equi-expressive with S1S over pP, sq. However, it is not immediately obvious whether it is possible to adapt Büchi’s argument to establis...

Abstract. Self-similarity of random trees is related to the operation of pruning. Pruning R cuts the leaves and their parental edges and removes the resulting chains of degree-two nodes from a finite tree. A Horton-Strahler order of a vertex v and its parental edge is defined as the minimal number of prunings necessary to eliminate the subtree rooted at v. A branch is a group of neighboring ver...

A central result in the AGM framework for belief revision is the construction of revision functions in terms of total preorders on possible worlds. These preorders encode comparative plausibility: r ă r1 states that the world r is at least as plausible as r1. Indifference in the plausibility of two worlds, r, r1, denoted r „ r1, is defined as r ⊀ r1 and r1 ⊀ r. Herein we take a closer look at p...

Za posledné roky sme svedkami obrovského nárastu možností liečby sclerosis multiplex (SM) liekmi s rôznym mechanizmom účinku, ktoré ovplyvňujú imunitný systém imunomoduláciou alebo imunosupresiou. S príchodom nových liekov vyššou účinnosťou, ako poznáme pri interferónoch ß glatiramer acetáte, sa podstatne zmenil manažment pacienta so SM zreteľom na jeho bezpečnosť ...