AIM To compare the shaping ability of Mtwo instruments with K3 and RaCe instruments. Part 1 of this two-part report describes the efficacy of these nickel-titanium instruments in simulated curved root canals. METHODOLOGY Simulated canals with 28 degree and 35 degree curves in resin blocks were prepared with Mtwo instruments using a single length technique and with K3 and RaCe instruments usin...

this study aimed to investigate the relationship between race horse breed and the frequency of limb injuries through the time of training and racing. the study population consisted of 4042 thoroughbred and 2553 arabian horses raced at warsaw race track, from 2000 to 2008. among these horses, 94 thoroughbreds and 32 arabians had different limb injuries. based on the achieved results, it is possi...

The paper addresses dynamics in information ecosystems due to competition between selfish agents to get control of protectable resources. In our case study we investigate the first arms race on Internet triggered by the Napster introduction of an easy to use service for sharing files with music content among users. We set up a model for investigation of possible scenarios emerging from the Naps...

introduction: insurance considered as the main financial resource of hospitals but hospitals have disagreement with insuring organizations in some financial cases and usually they do not received all their insurance claims. the aim of current research was to review the causes of deductions  in insurance bills in seyed alshahada hospital and suggest some suitable approaches. methods: in this des...