Sir Leonard Rogers (Fig. 1) was a "perfect tiger for hard work"' and, moreover, meticulously careful and thorough in everything that he did. It would not, therefore, have surprised his colleagues to learn that he preserved much of the paperwork he acquired during his long career and spent many hours of his retirement sorting, rearranging , and annotating his diaries, records, and correspondence...

The iron content of the ore used is crucial for the productivity and coke consumption rate in blast furnace pig iron production. Therefore, most iron ore deposits are processed in beneficiation plants to increase the iron content and remove impurities. In several comminution stages, the particle size of the ore is reduced to ensure that the iron oxides are physically liberated from the gangue. ...

The network of detectors comprising the Laser Interferometer Gravitational-wave Observatory (LIGO) are among a new generation of detectors that seek to make the first direct observation of gravitational waves. While providing strong support for the General Theory of Relativity, such observations will also permit new tests of physical theory in regions of strong space-time curvature and high mat...

The calcium current o f bullfrog sympathetic neurons activates and deactivates rapidly (7 < 3 ms). For brief depolarizations, the current can be fit reasonably well by a Hodgkin-Huxley-type model with a single gating particle o f charge + 3. With 2 mM Ca 2+ as the charge carrier, half-maximal activation occurs at ~ 5 mV, near the voltage where activation and deactivation are slowest. When extra...

La propagation des ondes Žlastiques est gŽnŽralement traitŽe sous quatre hypothses : Ð le milieu est isotrope, Ð le milieu est homogne, Ð il y a une relation biunivoque entre la tension et la dŽformation, Ð les tensions sont reliŽes dÕune faon linŽaire aux dŽformations (et de manire Žquivalente, les dŽformations sont reliŽes dÕune faon linŽaire aux tensions). En gŽnŽral au moins une de ces...

Bioinformatic data sources available on the web are multiple and heterogenous. The lack of documentation and the difficulty of interaction with these data sources require users competence in both informatics and biological fields for an optimal use of sources contents that remain rather under exploited. In this paper we present an approach based on formal concept analysis to classify and search...