[Pneumatosis cystoides intestinalis: a case report and review of the literature].

Pneumatosis cystoides intestinalis features the presence of subserum or submucous cysts with gas in the intestinal wall. Its prevalence is 0.03%, although it has increased in the past decades due to a greater use of colonoscopy in everyday medical practice.

Multiport logic operations triggered by protonation--a trisphenanthroline as a 3-input AND-NOR-OR circuit.

A linear bisphenanthroline (two binding sites) is set up to operate as a XNOR gate and a linear trisphenanthroline (three binding sites) as a molecular 3-input AND-NOR-OR logic circuit, both with H(+) as input signal and luminescence as output signal.