micrornas (mirnas) represent a class of small non-coding rna molecules that regulate gene expression at the post-transcriptional level. they play a crucial role in diverse cellular pathways. ionizing radiation (ir) is one of the most important treatment protocols for patients that suffer from cancer and affects directly or indirectly cellular integration. recently it has been discovered that mi...

the aim of this study is to investigate the effects of outside board on rm value in tehran stock exchange (tse) from the perspective of information transaction costs. to do so, a sample of 96 firms listed in tse is selected to be studied during the period of 2003-2012. tobin q ratio is used to measure rm's value and bid-ask spread for information transaction costs. in addition to these v...

GSNO (S-nitrosoglutathione) is emerging as a key regulator in NO signalling as it is in equilibrium with S-nitrosated proteins. Accordingly, it is of great interest to investigate GSNO metabolism in terms of competitive pathways and redox state. The present study explored ADH3 (alcohol dehydrogenase 3) in its dual function as GSNOR (GSNO reductase) and glutathione-dependent formaldehyde dehydro...

A strategy S solving a navigation task T is called competitive with ratio r if the cost of solving any instance t of T does not exceed r times the cost of solving t optimally. The competitive complexity of task T is the smallest possible value r any strategy S can achieve. We discuss this notion, and survey some tasks whose competitive complexities are known. Then we report on new results and o...