Greve de 1917

A Feeling for the Cell: Christian de Duve (1917–2013)

Christian de Duve was an internationally renowned cell biologist whose serendipitous observation while investigating the workings of insulin led to groundbreaking insights into the organization of the cell. The observation, which he once described as ‘‘essentially irrelevant to the object of our research,’’ ultimately led him to discover two organelles—the lysosome and the peroxisome—for which ...

Hilbert's programs: 1917--1922

Hilbert's finitist program was not created at the beginning of the twenties solely to counteract Brouwer's intuitionism, but rather emerged out of broad philosophical reflections on the foundations of mathematics and out of detailed logical work; that is evident from notes of lecture courses that were given by Hilbert and prepared in collaboration with Bernays during the period from 1917 to 192...

Hilbert's Programs: 1917-1922

Hilbert’s finitist programwasnot created at the beginningof the twenties solely to counteract Brouwer’s intuitionism, but rather emerged out of broad philosophical reflections on the foundations of mathematics and out of detailed logical work; that is evident from notes of lecture courses that were given by Hilbert and prepared in collaboration with Bernays during the period from 1917 to 1922. ...

Francis W. Peabody, 1917

Dev121095 1912..1917

The endoderm gives rise to diverse tissues and organs that are essential for the homeostasis and metabolism of the organism: the thymus, thyroid, lungs, liver and pancreas, and the functionally diverse domains of the digestive tract. Classically, the endoderm, the ‘innermost germ layer’, was in the shadow of the ectoderm and mesoderm. However, at a recent Keystone meeting it took center stage, ...