You say : Solar energy ? What do you mean ?

The agenda and the participants of the 40 years ago Mont Louis International Colloquium on Solar Energy are looked at, and it is obvious that the bulk of the meeting is devoted to solar furnaces although not exclusively. This coïncides to the profile of the CNRS Solar Energy Laboratory founded in 1948 according to the will expressed in a motion signed by 11 academicians all specialists in the field of high temperature and inorganic chemistry and metallurgy. At the issue of a campaign of research in using a solar furnace in Meudon there were enough evidences established by Tombe's team to justify the construction of a large solar furnace for new high temperature capabilities and practical applications on hand. The main contributions by Trombe and Foëx are identified to be : the non contaminant self-crucible melting using focused solar radiation, the hot spot specific features and the coupling of solar furnace and other sources like plasma gun. The analysis of different cases of high temperatures approaches since Moissan with his electric furnace all through today's research shows a surprising continuity in efficiently creating new objects in the sense of M.Berthelot

Treating women under 36 years old without top-quality embryos on day 2: a prospective study comparing double embryo transfer with single blastocyst transfer

 absen

Ovarian function

chap. 15International audienc

La fonction ovarienne

chap. 15National audienc

Ovarian function

chap. 15International audienc

La fonction ovarienne

chap. 15National audienc

Freezing and thawing alter chromatin stability of ejaculated human spermatozoa : fluorescence acridine orange staining and feulgen-DNA cytophotometric studies

International audienc

Evolution des paramètres spermatiques d'hommes fertiles de 1976 à 2010

National audienc

Freezing and thawing alter chromatin stability of ejaculated human spermatozoa : fluorescence acridine orange staining and feulgen-DNA cytophotometric studies

International audienc

Clinical outcome after insemination with donor sperm in patients with poor results in ICSI cycles

The introduction of intracytoplasmic sperm injection (ICSI) provided an effective treatment for infertile couples whose infertility was attributed to male factors. However, some of them face poor results after ICSI and subsequently use artificial insemination with donor sperm (AID). Only a few studies have reported on the clinical outcome of AID cycles after previous failed ICSI cycles, with contrasting results. The results reported here involve a cohort of 47 couples undertaking 175 AID cycles after 120 failed ICSI cycles for various reasons. Couples were allocated to two groups according to the availability of top quality embryos (TQE) in ICSI cycles. In our series, AID was successful for couples with and without TQE previously transferred in ICSI cycles, the live birth rate (LBR) per cycle being 20.0% and 13.3%, respectively. However, couples with TQE tended to succeed more rapidly than couples with poor quality embryos, with a higher cumulative LBR (68.0% versus 54.5%, respectively). These findings demonstrate that even couples with a history of unsuccessful ICSI cycles because of poor embryo quality are able to achieve high LBR after AID cycles. However, such couples have a lower cumulative LBR and are required to be more patient to achieve parenthood