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dps mms
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irradiation Videos 1 year ago
hi
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LA CELLULE, SA VIE SES MOEURS
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irradiation Videos 1 year ago
- PANO sur façade de l'Institut de pathologie cellulaire à l'hôpital de Bicêtre - madame X, est interviewée : explique la façon d'étudier les cellules, les compare aux cellules malades, étudie également la mitose de la cellule - PE de cellules se divisant, se mouvant - docteur MARCEL BESSIS : les cellules sont examinées au microscope électronique - GP sur globules blancs du sang humain agrandies 2000 fois, explication de la composition de la cellule - GP cellule examinée en coupe au microscope électronique - GP polynucléaires du sang et divers plans de coupes - GP sur lymphocytes (globule blanc) - GP sur globules rouges, ils sont très déformables - globules rouges comprimés en forme de rouleaux - ils sont réunis par des filaments dans le cas d'une transfusion incompatible et bloquant les vaisseaux - GP sur globules rouges en forme d' oursin - PE photos des deux sortes de globules rouges - on peut reconnaître l'espèce d'un animal par la forme de ses globules rouges - GP de globules rouges d'homme et grenouille - GP globules rouges de poule et de grenouille - GP globules rouges de chameaux - ils résistent à l'eau distillée - GP globules rouges humains et de chameau auxquels on ajoute de l'eau distillée - GP sur cellule, on y ajoute de l'eau distillée - le noyau éclate, autres exemples de mort d'une cellule - GP (dans le sang conservé) de cellules en agonie - GP leucocytes mangeant un microbe, le digérant (phagocytose) - GP d'une cellule globule blanc mangeant microbes en bâtonnet, et dévorant le globule rouge malade - GP globule rouge empoisonnant le globule blanc, les deux meurent - on peut se servir de la microchirurgie dans certaines maladies - monsieur X montre des appareils pouvant exercer la microchirurgie - GP exemple de greffe nucléaire chez l'amibe - GP l'amibe greffée, possède deux noyaux - GP découpage du cytoplasme - Docteur BESSIS : on ne peut pas encore utiliser ce moyen sur les globules rouges, il n'y a pas de pipettes assez fines - GP globule rouge de grenouille soutenant un parasite, ce parasite sort de son globule et cherche un autre globule, le noyau du globule rouge vire au noir et meurt - le docteur montre le fonctionnement du laser - GP irradiation d'une cellule par un flash de laser - globules rouges en rouleaux, irradiés fortement - irradiation sur globule siolé - GP hémolyse - Expérience : une cellule est irradiée par le laser, les leucocytes se ruent vers la cellule détruite, des expériences sur des cellules d'épiderme ou de foie, lavées n'avaient pas attiré les leucocytes, la cellule a un comportement très complexe, elle reconnaît et mange les cellules qui n'appartiennent pas à son milieu, mais aussi les cellules de son espèce qui sont altérées, les cellules sont de petits animaux - La cellule cancéreuse ne répond pas au mécanisme régulateur de l'organisme - schéma représentant la maturation des globules rouges, plaquettes et globules blancs et passant dans la circulation du sang - schéma représentant le passage des globules blancs dans le sang (se multiplient indéfiniment) - dans le cas de la leucémie - ces cellules cancéreuses ne sont pas reconnues comme malades et prolifèrent indéfiniment - GP sur cellules de leucémie, se divisant dans le sang - il y a deux théories dans l'immunité, théorie de la sélection et de l'instruction, les cellules leucémiques ne sont pas fonctionnelles - GP sur cellules leucémiques ne phagocytant pas, n'attaquant pas les microbes .... Read more...
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nasa.mpg
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irradiation Videos 1 year ago
View Electron Beam Animation (mpg format) View Clip on NASA Use of Irradiated Foods (mpg format) From Government Sources: USDA RELEASES SPECIFICATIONS FOR THE PURCHASE OF IRRADIATED GROUND BEEF IN THE NATIONAL SCHOOL... Read more...
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FDA: Pasteurization Irradiation Same thing...
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irradiation Blogs 1 year ago
The industry likes to use the argument that GMO's/irradiation/rBgh whatever have not been proven to be any more harmful than those foods not with them, and by labellings the foods as such would 'harm the industry'. ...... Read more...
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Irradiation Wikipedia RSS Feed
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irradiation Bio 2 years ago
Irradiation is the process by which an item is exposed to radiation. The exposure can be intentional, sometimes to serve a specific purpose, or it can be accidental. In common usage the term refers specifically to ionizing radiation, and to a level of radiation that will serve that specific purpose, rather than radiation exposure to normal levels of background radiation or abnormal leves of radiation due to accidental exposure.
Most forms of radiation do not induce a state of radioactivity in the target. Examples of this include gamma rays, electron beams or X-rays if employed at or below the energy levels permited by national and international regulatory agencies for industrial applications. Gamma rays and X-rays are very-short-wavelength electromagnetic radiation consisting of photons that penetrate through solid matter until they scatter electrons from molecules by means of the compton effect or at lower levels the photoelectric effect. These electrons then induce the desired effects in the material, by destroying pathogen DNA or improving material characteristics. Electron beam irradiation employs electrons, but has a much lower power of penetration.
If administered at appropriate levels, all of these forms of radiation can be used to sterilize objects, a technique used in the production of medical instruments and disposables, such as syringes as well as in the disinfestation and sterilization of food. Irradiation can further more be used in cross-polymerization of plastics or to improve material qualities of semi-precious stones. Irradiation is also employed to prevent sprouting of certain cereals, onions, potatoes and garlic. During the 2001 anthrax attacks, the US Postal Service irradiated mail to protect members of the US government and other possible targets. This can be of some concern to people, including artists; according to the ART in Embassies programme "incoming mail is irradiated, and the process destroys slides, transparencies and disks."1
See also
*Radiolyse
*Food irradiation
Category:Radiobiology
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de:Bestrahlung
fr:Irradiation
The Wikipedia article is licensed under http://www.gnu.org/copyleft/fdl.html and uses material from http://en.wikipedia.org/wiki/Irradiation. A preview of this article is available at http://www.blinkbits.com/en_wikifeeds/Irradiation.... Read more...
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Research Finds Lesser Rectal Cancer Risks Ass...
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irradiation News 2 years ago
According to a new study published in the International Journal of Radiation Oncology no appreciable risks were found t... Read more...
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ASTRO Announces 2006 Gold Medal Winners
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irradiation News 2 years ago
Medical News Today - Hoppe has also played a major role in the development of the successful Stanford programs for the treatment of Hodgkin's disease and other lymphomas as well as trials of total lymphoid irradiation to establish transplantation tolerance. At the ...... Read more...
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Share a Recipe
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irradiation News 2 years ago
KXAN - These standards prohibit the use of most synthetic (and petroleum derived) pesticides and fertilizers, and all antibiotics, genetic engineering, irradiation, and sewage sludge in the production of fruits, vegetables, meat, and poultry. In order ...... Read more...
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Shop smart, eat smart
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irradiation News 2 years ago
Star-Banner - Its 600-some pages offer an in-depth historical and scientific context for issues as far-ranging as lactose intolerance, meat irradiation, farmed fish and the rise of ``designer eggs. ``Theres a lot of nutrition information, but its been ...... Read more...
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Organic outlook
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irradiation News 2 years ago
Alexandria Daily Town Talk - Prohibit the use of genetically modified organisms and irradiation. Employ positive soil building, conservation, manure management and crop rotation practices. Provide outdoor access and pasture for livestock. Refrain from antibiotic and hormone use ...... Read more...
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Analyst lowers profit estimate for cruise lin...
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irradiation News 2 years ago
Orlando Sentinel - Mulberry-based Food Technology provides irradiation services for food, medical products and consumer goods. Sysco Corp., North America's largest distributor of food to restaurants, said fourth-quarter profit fell 11 percent on higher fuel and stock ...... Read more...
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Novel ingredient approval sought for baobab e...
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irradiation News 2 years ago
Food Navigator - The ACNFP is a non-statutory body of scientific experts that advises the FSA on any matters relating to novel foods (including genetically modified foods) and novel processes (including food irradiation). The committee carries out safety assessments ...... [url=]Read more...[/url]
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