Jean Bête et Jean Alphabète

Jean - Paul Fermand and Jean - Claude Brouet

In the majority o f chronic lymphocytic leukemias (CLL), proliferative B lymphocytes are thought to be frozen in vivo at a given maturat ion stage (1). Recently, several studies have emphasized that CLL cells could be driven to different iate into plasma cells in vitro (with or without proliferation) upon t r iggering by mitogens (2, 3, 4) or T cel l -der ived factors (5, 6). Th u s far, howeve...

Jean Perrin

1. The first indication of the phenomenon.-When we consider a fluid mass in equilibrium, for example, some water in a glass, all the parts of the mass appear completely motionless to us. If we put into it an object of greater density it falls and, if it is spherical, it falls exactly vertically. The fall, it is true, is the slower the smaller the object; but, so long as it is visible, it falls ...

Jean E

The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. The four books under review address several of the most compelling issues that have arisen following the democratic transitions of the 1980s and 1990s in Latin American counties with indigenous populations. The main concerns shared by the authors, all anthropologists, are indig...

Informatique et linguistique Extraits du cours de Jean Véronis

Jean-Paul Delahaye 2000

How can we know if a proof is correct? People often imagine that it suffices for a mathematician to make the effort to read it carefully, line by line, after having taken note of the definitions and known results that might be of use. If certain questions are unresolved, as to be sure some are, we would known precisely which ones, and the work of the researcher would consist uniquely of resolvi...