Safe days in space with acceptable uncertainty from space radiation exposure

Remarkable reduction of exposure rate in patients with stress-only myocardial perfusion scan: Let’s safe mankind from unjustified radiation exposure

Introduction: To measure radiation exposures rate in low-risk patients having stress-only and stress-rest myocardial perfusion imaging. Methods: This was a prospective study conducted from January 2012 till November 2012 upon patients with low pre-test probability for coronary artery disease (CAD). A stress MPI (stress-only if MPI is normal and no resting study) followed by a resting MPI study...

Epigenetic memory of space radiation exposure

Data in Your Space (DAYS)

We define the space as ``persistent data storage", which conforms to essential database characteristics such as consistency, recoverability, and security. From the user point of view it allows information access, information modifications, and information storage without spatial and temporal constraints. Thus, a user can access necessary information, deposit important information for future use...

Uncertainty Relation in Flat Space from Holography

Following the idea that information is the negative entropy, we propose that the information and entropy of an isolated system can convert into each other while the sum of them is an invariant for any physical process. The holographic principle is then reformulated in the way that this invariant is bounded by the Bekenstein-Hawking entropy of the system. It is found that Heisenberg’s uncertaint...

Deep space missions and the issue of overcoming the problem of space radiation

As a member of the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS), Iran has a long-term space exploration program. Space radiation is one of the challenges facing humans when they go outside Earth's protective atmosphere and magnetic field. Space is an environment that the cardinal principles of radiation protection i.e. time, distance and shielding cannot be effectively ...