Origin of Flint in Chalk

Chalk in the prime.

After observations of cloudiness in the perfusion circuit at open intracardiac operations, laboratory experiments showed a precipitate in a Hartmann's solution (compound sodium lactate solution, Ringer-lactate) and sodium bicarbonate based priming fluid used for cardiopulmonary bypass. The precipitate was found to consist of calcium carbonate crystals. The crystals were not dissolved by adding ...

Joseph Marshall Flint

NTL vs FLINT

All tests were carried out on a very lightly loaded machine with a 64-bit Intel “Haswell” CPU (Intel Xeon CPU E5-2698 v3 at 2.30GHz) with plenty of memory (over 250GB). The operating system was Cent OS. The compiler was gcc v4.8.5. We compared NTL v9.9.1 with FLINT v2.5.2. These were both built using GMP v6.1.0. All of these were the most recent releases of these packages at the time we carried...

Exhumation and Design of Anchorages in Chalk

Synopsis An anchorage test programme carried out on the site of deep basement construction in Norwich, UK, allowed determination of anchorage capacities, creep characteristic data and the exhumation of several anchor bodies in chalk. This paper reports on the performance of the chalk based anchorages, the observation of exhumed grout body shapes and sizes, extent of grout penetration into disso...

My word Colored chalk

On the first day of teaching a new class I carry with me a stack of paper syllabi and a new box of colored chalk — each pink, yellow, green, purple, orange and blue stick unblemished and whole, ready to be eroded and broken in the service of teaching neuroscience. My teaching assistants carefully post the syllabus on the web, and even more carefully update it to accommodate my inability to stic...