Mobile genetic elements such as plasmids are important for the evolution of prokaryotes. It has been suggested that there are differences between functions coded for by mobile genes and those in the "core" genome and that these differences can be seen between plasmids and chromosomes. In particular, it has been suggested that essential genes, such as those involved in the formation of structura...

Despite the egocentric-sounding title, this is not about myself but rather about the concept of self and how it may relate to that of meta, in the context of various considerations, including formal and informal notions of self-reference, reference in general, theories of consciousness, and the active logic approach to commonsense reasoning.

Case 1: A female baby weighing 3 kg referred from a small town near Afghanistan border, after providing initial surgical care for gastroschisis. In privately owned vehicle it takes more than 36 hours to reach our facility from the hospital, where patient was managed initially. The baby was delivered with no antenatal workup. Following birth the patient was immediately transferred to the militar...

• Major depressive disorder is a risk factor in the development of coronary heart disease. Individuals with depression are more likely to experience an adverse cardiac event such as a heart attack or blood clots. Depression has proven to be such a risk factor in cardiac disease that the American Heart Association has recommended that all cardiac patients be screened for depression. • People who...

Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/about/terms.html. JSTOR's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your perso...

We show that for any computably enumerable (c.e.) degree a and any low n–c.e. degree l (n ≥ 1), if l < a, then there are n–c.e. degrees a0,a1 such that l < a0,a1 < a and a0 ∨ a1 = a. In particular, there is no low maximal d.c.e. degree.