Llull has been described, anachronistically, as the first computer scientist. Nevertheless he did make significant contributions to the discipline that is now seen as computer science. Some of these contributions are also relevant to mathematics. The latter has become wellknown, principally because his ideas were taken up by Leibniz (16461716) and his followers. We discuss these contributions. ...

A theory of social communication is developed to explain (he endogenous processes by which stable organization is achieved in social collectives. The theory shows how two orders of social relations, fl/lx (the distribution of energy) and ("amral (spati:ll and temporal conslmints on behavior) activate the potential energy of the collective's members-their cap:lcity for physical and social behavi...

A review is presented in this paper of recent developments in the area of optical logic. Special emphasis is placed on optical programmable logic arrays and the development of a rudimentary optoelectronic central processing unit.

Investigators from Necker Enfants Malades Hospital, Sorbonne Paris Cite University, Raymond Poincare University, and Paris Descartes University studied motor neuron function in children with Dravet syndrome (DS).

target of radiation action. The greatest toxicity is Purpose : The incubation of the DNA minor-groove binder observed when the I atom is incorporated within [I]iodoHoechst 33342 (IH) with plasmid DNA leads to the the DNA helix (i.e. 5-[I]iodo-2 3⁄4 -deoxyuridine, production of one double-strand break (dsb) per decay, both in IdUrd (Kassis et al. 1988)) , while its dislocation by the presence an...

OBJECTIVE This retrospective study presents our experience with respect to the clinical and angiographic outcomes of patients treated with stent-assisted coil embolization using Solitaire™ AB stents. MATERIALS AND METHODS From March 2011 to December 2014, 50 patients with 55 wide-necked and/or complex intracranial aneurysms were evaluated. Four patients presented with an acute subarachnoid he...

The giomerular mesangium is a supporting structure that includes the mesangial cells and an intercellular substance, the mesangial matrix. Mesangial cells are steilate in shape and resemble morphologically smooth muscle cells (1, 2). They contract in response to binding of angiotensin II (3, 4) and vasopressin (4). They also produce prostaglandins (PG) 1 (5) and synthesize the mesangial matrix ...