1 / 11

December 4, 2009

December 4, 2009. Men's genes 'may limit lifespan'. Ch. 16 (wastes) & 17 (water pollution).

kioshi
Download Presentation

December 4, 2009

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. December 4, 2009 Men's genes 'may limit lifespan' • Ch. 16 (wastes) & 17 (water pollution) Men carry the seeds of their own destruction in the genes present in their sperm, research suggests. Scientists working on mice have highlighted a specific gene that, although carried by both sexes, appears to be active only in males. They believe it allows males to grow bigger bodies - but at the expense of their longevity. The study, by Tokyo University of Agriculture, appears in the journal Human Reproduction.

  2. Types of Radioactive Waste • Low Level • from hospitals, labs and industry • paper, rags, tools, clothing, filters • Transuranic (intermediate) • resins, chemical sludges, reactor components • High Level • spent fuel, nuclear weapons % by Volume % by radioactivity

  3. Fuel: 56,000 MT Defense: 11,000 MT Total: 67,000 MT

  4. ceramic Synroc How is HLRW Stored? • Liquid • Solid • Vitrification • Synroc

  5. Management of Wastes • Long term options (potential problems?) • bury in ocean floor • launch into space • put in polar ice sheets • subduction zones • bedrock caverns • ‘delay-and-decay’

  6. Underground Storage • Multiple Barrier Concept • Host rock • stable geology • low porosity & permeability, unfractured • e.g., granite, basalt, tuffs, shale, salt domes • Engineered barriers • canisters, shielding, backfill • Solid waste form • vitrified or ceramic form reduces mobility

  7. Why Yucca Mountain? • Dry climate, remote location, stable geology, deep water table, welded tuffs, Nevada Test Site (NTS) • Underground repository must safely isolate highly radioactive nuclear waste for at least 10,000 years.

  8. 3-D image of YM with tunnels

  9. Perforated Sheet

  10. YM Geologic Cross Section Water table ▼

  11. T. Kneafsey S. Finsterle J. Birkholzer Seepage Studies • Capillarity and evaporation • Boiling and drying • Fracture sealing

More Related