منابع مشابه
Elliptic stars in a chaotic night
A recurrent theme in the description of phase portraits of dynamical systems is that of elliptic islands in a chaotic sea. Usually this picture is invoked in the context of smooth twist maps of the annulus or the torus, like the standard map. In this setting ‘elliptic islands’ refers to the topological disks bounded by periodic smooth curves surrounding elliptic periodic points. Establishing th...
متن کاملEffect of the Artificial Night with Facilitated Tucking and Artificial Night Alone on the Physiological Indices of Premature Infants
Background: Preterm birth and admission to neonatal intensive care unit as stressors can cause physiologicalinstability that may lead to prolong hospitalization and mortality. This study aimed to determine the effect of artificialnights and facilitated tucking on the physiological indices of premature infants.Methods: This randomized clinical trial was conducted on 60 preterm ...
متن کاملNight sweats
Although night sweating is a common outpatient complaint medical, literature on this subject is scarce. Tuberculosis, brucellosis and lymphoma are diseases in which night sweating is a dominant symptom, but these are infrequently found to be the cause of night sweats in modern practice. While these diseases remain important diagnostic considerations in patients with night sweats, other diagnosi...
متن کاملUnweighted p-center problem on extended stars
An extended star is a tree which has only one vertex with degree larger than two. The -center problem in a graph asks to find a subset of the vertices of of cardinality such that the maximum weighted distances from to all vertices is minimized. In this paper we consider the -center problem on the unweighted extended stars, and present some properties to find solution.
متن کاملStars from the darkest night: unlocking the neurogenic potential of astrocytes in different brain regions.
In a few regions of the adult brain, specialized astrocytes act as neural stem cells capable of sustaining life-long neurogenesis. In other, typically non-neurogenic regions, some astrocytes have an intrinsic capacity to produce neurons when provoked by particular conditions but do not use this ability to replace neurons completely after injury or disease. Why do astrocytes display regional dif...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Iowa Review
سال: 1972
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.1344