Oldest stars are older still

Abundance Ratios in the Oldest Stars

Are ongoing trials on hematologic malignancies still excluding older subjects?

vision of the possible mechanism(s) involved in the hemolytic crisis brought on by other comorbid conditions, such as sepsis. Along the same lines, there is evidence that the HbF levels, an important regulatory mechanism of SCA severity and hemolysis, govern MP concentration by acting on specific MP subtypes. We can imagine that, in SCA children, a storm of various (mainly platelet-derived) pro...

Are pre-main-sequence stars older than we thought?

We fit the colour-magnitude diagrams of stars between the zero-age main-sequence and terminal-age main sequence in young clusters and associations. The ages we derive are a factor 1.5 to 2 longer than the commonly used ages for these regions, which are derived from the positions of pre-main-sequence stars in colour-magnitude diagrams. From an examination of the uncertainties in the main-sequenc...

Are viruses our oldest ancestors?

Humans have a skewed view of viruses because we only notice them if they cause disease. In reality, however, viruses are much more than pathogens. HIV and influenza cause frightening health threats, but 1019 HIV particles worldwide are basically nothing compared to 1033 total number of viruses on our planet. Viruses are present in every species and every ecological niche, and affect every organ...

Meaning of Life and Psychological Well-Being during Adult, Older Adult and Oldest Old

Introduction: Adulthood is associated with many challenges which requires adaptability. Differences between adults and the older adults are important to adapt with these challenges and facilitators of adaptation. The present study aimed to determine the difference between the meaning of life and psychological well-being through different age groups of adults, older adults and oldest olds.   M...