[en] The start-up Atlab Phrama was created the 25. july 2008 at Nantes (France). Specialized in nuclear medicine, it proposes a therapy approach with radioactive antibodies to treat the patients suffering of a cancer. Injected to the patients these drugs have the ability to locate and irradiate specifically the cancerous cells, with a receptor expressed at the surface of these cells. This opens new perspectives of treatment, especially at an advanced stage of the disease. This society plans to develop, with pharmaceutic industry, three radioactive antibodies products whom one is used for the lung cancer, and comes from the research at the regional center of Nantes- Angers. (N.C.)

[en] Sunflowers offer a new method of decontamination. 55 kilograms (dry weight) of sunflowers are able to decontaminate all the cesium 137 and the strontium 90 polluting a pond situated at one kilometer from Tchernobyl. These flowers are able to decrease 95% in 24 hours the uranium concentration in the american site of Ashtabula in Ohio getting this water from 350 parts by milliards to less than 5 parts by milliards. The radioactivity should stocked in the roots at concentrations 5 000 to 10 000 times higher than water concentration. The cost is cheaper than micro filtration and precipitation (2-6 dollars for 4 000 liters of water against 80 dollars for others technologies). when sunflowers are radioactive they can be reduced in dust and vitrified and stocked as solid radioactive wastes. (N.C.)

[en] This work deals with the atomic force (AFM), scanning tunneling (STM) and scanning force (SFM) microscopies. These analysis methods are based on different physical principles. Nevertheless, in all of them, a probe is situated at a few angstroms or at the direct contact of the studied sample and carries out a controlled scanning of the sample surface. Their physical principles and their running ways are described. Their potentialities and limits are given too. With these analysis methods, and more particularly with the AFM can be observed the crystal structure of isolated biological molecules and the tri dimensional structure of biological molecules which are inserted in artificial membranes. One of the future prospect of the AFM in biology is the direct observation of living cells. Indeed, it will offer the opportunity to follow, with time and in space, the individual cells behaviour and their morphological modifications. Others uses and developments of the AFM concerns the in situ analysis of mechanisms which govern the crystal growth or the direct viewing of a protein enzymatic activity. (O.M.). 37 refs., 7 figs

[en] The American agriculture with its vegetables with green leaves which it is very difficult to free of pathogenic elements as E.coli could reconsider the use of the irradiation which allows to eliminate 99,9 % of the pathogenic in the mass; to consolidate this use the works of the IAEA, the FAO, the Fda and the Who confirmed its utility and its harmlessness. (N.C.)

No abstract available

[en] Ancestral mediterranean basin food, oil olive holds more and more the scientist attention for its high dietetic value. The valorization or the traditional or more and more refining of its by-products or wastes illustrates exemplary the ''lasting development'' concept. 10 refs

[en] On Friday, March 11, 2011, on account of the exceptional devastating seism and tsunami, several reactors of the Fukushima Dai-Ichi Japanese nuclear power plant have lost their power supplies and cooling sources. In the days later, important radioactive releases have been noticed. The Crisis Technical Center of the IRSN (Institut de Radioprotection et de Surete Nucleaire) have analyzed them. Their results are given in this article. (O.M.)

[en] The response to irradiation is a complex phenomenon which is not only limited to the nucleus. The factors of transcription, of translation, and growth have certainly an important impact. If, for the man, the existence of an adaptative response is supposed, the proof is still to be established. 39 refs. 3 tabs. 1 fig

[en] The SOLEIL French synchrotron radiation facility, in construction near Paris, aims to cover the whole needs of the French scientific community for the third generation synchrotron radiation. Here is given particularly an example of use in the field of diagnosis and treatment of neoplasms. (O.M.)

[en] A space flight is submitted to 3 main sources of radiation: -) cosmic radiation (4 protons/cm²/s and 10000 times less for the heaviest particles), -) solar radiation (10⁸ protons/cm²/s in the solar wind), -) the Van Allen belt around the earth: the magnetosphere traps particles and at an altitude of 500 km the proton flux can reach 100 protons/cm²/s. If we take into account all the spatial missions performed since 1960, we get an average dose of 400 μGray per day with an average dose rate of 0.28 μGray/mn. A significant risk of radiation-induced cancer is expected for missions whose duration is over 250 days.The cataract appears to be the most likely non-cancerous health hazard due to the exposition to comic radiation. Its risk appears to have been under-estimated, particularly for doses over 8 mGray. Some studies on astronauts have shown for some a very strong predisposition for radio-induced cancers: during the reparation phase of DNA breaking due to irradiation, multiple new damages are added by the cells themselves that behave abnormally. (A.C.)