Re: [ccp4bb] Dennis Ritchie

2011-10-18 Thread DUMAS Philippe (UDS)
Le Mardi 18 Octobre 2011 16:36 CEST, Sabuj Pattanayek a écrit: Should I understand that Gérard Brigogne really meant that Ritchie's achievements were peanuts ? Yet, after so many years in England I thought Gerard mastered British humour rather well... Encore un effort Gérard Philippe Dum

Re: [ccp4bb] off topic: ITC or Biacore

2012-08-09 Thread DUMAS Philippe (UDS)
Le Jeudi 9 Août 2012 09:55 CEST, rashmi panigrahi a écrit: Hello Rashi There is no problem with ITC at "low temperature", apart for a likely slower binding and, hence, lower heat power signal. Do not conclude that there is no binding if deltaH is close to 0 around 20-25 °C. You may well have

Re: [ccp4bb] Off-topic: Best Scripting Language

2012-09-12 Thread DUMAS Philippe (UDS)
Le Mercredi 12 Septembre 2012 16:40 CEST, "George M. Sheldrick" a écrit: May I add a little personal joke to the serious remark by George. This remembers me a discussion I had with Jorge Navaza, let's say 15 years ago, about the programming language of the future. (To a good approximation, 15

Re: [ccp4bb] Series termination effect calculation.

2012-09-17 Thread DUMAS Philippe (UDS)
Le Lundi 17 Septembre 2012 08:32 CEST, James Holton a écrit Hello May I add a few words after the thorough comments by James. I lmay be easier to consider series termination in real space as follows. The effect of series termination in 3D on rho(r) is of convoluting the exact rho(r) with the "

Re: [ccp4bb] PNAS on fraud

2012-10-18 Thread DUMAS Philippe (UDS)
Le Jeudi 18 Octobre 2012 19:16 CEST, "Bernhard Rupp (Hofkristallrat a.D.)" a écrit: I had a look to this PNAS paper by Fang et al. I am a bit surprised by their interpretation of their Fig. 3: they claim that here exists a highly signficant correlation between Impact factor and number of retr

Re: [ccp4bb] refining against weak data and Table I stats

2012-12-09 Thread DUMAS Philippe (UDS)
Le Vendredi 7 Décembre 2012 18:48 CET, Gerard Bricogne a écrit: May I add something to Gerard's comment. In the same vein, provided one does consider two sets of terms with zero mean (which corresponds to the proviso mentioned by Gerard), one can define an R-factor R as the sine of the same a

[ccp4bb] Very sad new

2012-12-28 Thread DUMAS Philippe (UDS)
I learnt today that Roger Fourme passed away on December 24. He was "Professeur Emérite" at Paris-Sud University and former "Directeur Scientifique" of the SOLEIL synchrotron. Along with Richard Kahn (also deceased recently), he has been deeply involved in the development of the MAD technique. U

Re: [ccp4bb] first use of synchrotron radiation in PX

2013-03-13 Thread DUMAS Philippe (UDS)
Jean Witz (now deceased) once told me that the following paper is the first one mentionning data "collection" on a synchrotron. The journal is not really "obscure" and the paper should easily be found. The work was done in Germany, if I remember well. G. Rosenbaum, K.C. Holmes and J. Witz, Synch