نتایج جستجو برای: thirteen in

تعداد نتایج: 16977008  

Journal: :Biodiversity Data Journal 2015

Journal: :Hispanic American Historical Review 1977

2005
Robert D. Skeel

In recent years there have been a number of surveys and comparison of techniques for estimating global discretization error in numerical solutions of differential equations [25, 29, 35, 36, 37, 39]. These have been an important stimulus to research in this area. In this paper we attempt to give an updated, organized, comprehensive survey of global error estimation techniques. For most of these ...

Journal: :Discrete & Computational Geometry 2004
Kurt M. Anstreicher

The “thirteen spheres problem,” also known as the “Gregory-Newton problem” is to determine the maximum number of three-dimensional spheres that can simultaneously touch a given sphere, where all the spheres have the same radius. The history of the problem goes back to a disagreement between Isaac Newton and David Gregory in 1694. Using a combination of harmonic analysis and linear programming i...

Journal: :EMBO reports 2013
Edzard Ernst

T use of alternative medicine (AM)—treatments such as herbs or massage therapy—has long been a part of healthcare in many regions of the world “to complement mainstream medicine by contributing to a common whole, by satisfying a demand not met by orthodoxy or by diversifying the conceptual frameworks of medicine” [1]. What AM cannot do is replace conventional treatment, particularly when it com...

2015
Thais Elias Almeida Alexandre Salino

Thirteen fern species are reported for the first time for Brazil. Among the new records, eight are from Acre state (Cyatheasubincisa, Cyclodiumtrianae, Elaphoglossumstenophyllum, Hypoderrisbrauniana, Pleopeltisstolzei, Thelypterisarcana, Thelypteriscomosa, Thelypterisvaldepilosa), two are from Pará state (Polypodiumflagellare, Tectariaheracleifolia), one from Minas Gerais state (Alsophilasalvin...

2005
DONAL M. BRooKs

excised ganglion resemble that of synovial membrane. However, it is generally accepted that if a synovial herniation becomes loculated as in a Baker’s cyst, the lining membrane can undergo a metaplastic change to mesothelium. \Vhile the predisposing factors responsible for the formation of ganglia are by no means certain, accumulated evidence suggests that trauma to the joint ma\’ be important,...

Journal: :The American Journal of the Medical Sciences 1869

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