نتایج جستجو برای: 1387 further

تعداد نتایج: 836923  

Betweenness centrality is a distance-based invariant of graphs. In this paper, we use lexicographic product to compute betweenness centrality of some important classes of graphs. Finally, we pose some open problems related to this topic.

2013
Aleksandra A Zasada Waldemar Rastawicki Natalia Rokosz Marek Jagielski

BACKGROUND Recommendations for diphtheria immunization are to apply an effective primary immunization in infancy and to maintain immunity throughout life. Immunity against diphtheria depends primarily on antibody to the diphtheria toxin. This study evaluated the seroprevalence of IgG diphtheria antitoxin in sera of healthy children, adolescents and adults in Poland. METHODS A total of 1387 se...

2013
Jiaying Xu Hongbo Shi Magaye Ruth Hongsheng Yu Lissy Lazar Baobo Zou Cui Yang Aiguo Wu Jinshun Zhao

BACKGROUND With a wide range of applications, titanium dioxide (TiO₂) nanoparticles (NPs) are manufactured worldwide in large quantities. Recently, in the field of nanomedicine, intravenous injection of TiO₂ nanoparticulate carriers directly into the bloodstream has raised public concerns on their toxicity to humans. METHODS In this study, mice were injected intravenously with a single dose o...

2002

The ITU Radiocommunication Assembly, considering a) that conventional objective methods (e.g. for measuring signal-to-noise ratio and distortion) are no longer adequate for measuring the perceived audio quality of systems which use low bit-rate coding schemes or which employ analogue or digital signal processing; b) that low bit-rate coding schemes are rapidly being deployed; c) that not all im...

Journal: :Cancer research 1986
J H Fitchen M K Riscoe B W Dana H J Lawrence A J Ferro

5'-Methylthioadenosine (MTA) is a naturally occurring nucleoside which is degraded by MTA phosphorylase (MTAase) to adenine and methylthioribose-1-phosphate in all normal mammalian cells. These products of the phosphorylytic cleavage of MTA are recycled to the nucleotide pool and methionine, respectively. Thus, supplemental MTA could theoretically be utilized by MTAase-containing cells as a sou...

2017
Kenneth R. Watterson Steffen V. F. Hansen Brian D. Hudson Elisa Alvarez-Curto Sheikh Zahir Raihan Carlos M. G. Azevedo Gabriel Martin Julia Dunlop Stephen J. Yarwood Trond Ulven Graeme Milligan

High-affinity and selective antagonists that are able to block the actions of both endogenous and synthetic agonists of G protein-coupled receptors are integral to analysis of receptor function and to support suggestions of therapeutic potential. Although there is great interest in the potential of free fatty acid receptor 4 (FFA4) as a novel therapeutic target for the treatment of type II diab...

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