Estudio general sobre los recursos naturales renovables para la alimentación y la agricultura en el Gran Caribe = Overview on the state of renewable natural resources for food and agriculture in the Wider Caribbean

Incluye Bibliografía

Future challenges in renewable natural resources : proceedings of a national workshop, January 22-25, 1979, Rosslyn, Virginia.

Issued Sept. 1979.

Integrated inventories of renewable natural resources : proceedings of the workshop : January 8-12, 1978, Tucson, Arizona.

Sponsored by Inventory Working Group, Society of American Foresters; School of Renewable Natural Resources, University of Arizona; Forest Service, U.S. Dept. of Agriculture; Bureau of Land Management, U.S. Dept. of the Interior; and Renewable Natural Resources Foundation.

New genre of antioxidants from renewable natural resources:synthesis and characterisation of rosemary plant-derived antioxidants and their performance in polyolefins

Several ester derivatives of rosmarinic acid (rosmarinates) were synthesised, characterised (1D and 2D NMR, UV and FTIR spectroscopy) and tested for their potential use as antioxidants derived from a renewable natural resource. The intrinsic free radical scavenging activity of the rosmarinates was assessed, initially using a modified DPPH (2, 2-diphenyl-1-picrylhydrazyl radical) method, and found to be higher than that of commercial synthetic hindered phenol antioxidants Irganox 1076 and Irganox 1010. The thermal stabilising performance of the rosmarinates in polyethylene (PE) and polypropylene (PP) was subsequently examined and compared to that of samples prepared similarly but in the presence of Irganox 1076 (in PE) and Irganox 1010 (in PP) which are typically used for polyolefin stabilisation in industrial practice. The melt stability and the long-term thermo-oxidative stability (LTTS) of processed polymers containing the antioxidants were assessed by measuring the melt flow index (MFI), melt viscosity, oxidation induction time (OIT) and long-term (accelerated) thermal ageing performance. The results show that both the melt and the thermo-oxidative stabilisation afforded by the rosmarinates, and in particular the stearyl derivative, in both PE and PP, are superior to those of Irganox 1076 and Irganox 1010, hence their potential as effective sustainable bio-based antioxidants for polymers. The rosmarinic acid used for the synthesis of the rosmarinates esters in this study was obtained from commercial rosemary extracts (AquaROX80). Furthermore, a large number of different strains of UK-grown rosemary plants (Rosmarinum officinalis) were also extracted and analysed in order to examine their antioxidant content. It was found that the carnosic and the rosmarinic acids, and to a much lesser extent the carnosol, constituted the main antioxidant components of the UK-plants, with the two acids being present at a ratio of 3:1, respectively.

Western Sahara : international law, justice and natural resources

As the Spanish were preparing to leave colonized Western Sahara in 1975, Morocco invaded, sparking a war with the Western Saharan Polisario Front. About 70% of Western Sahara was occupied by Morocco, which stations up to 140,000 soldiers in the territory, primarily along a 1700 kilometre long sand berm that is protected by one of the world’s largest fields of landmines. In 1991, Morocco and the Polisario Front agreed to a truce ahead of a referendum on Western Sahara’s future. However, Morocco has since refused to allow the referendum to take place, and has begun the extensive exploitation of Western Sahara’s non-renewable natural resources. This has both highlighted the plight of the Saharawi people who live in refugee camps in Algeria and in occupied Western Sahara, and pushed the Polisario Front back to a position where it is openly canvassing for a return to war.

Bio-renewable plastics from natural resources

The data is a collection of experiments and characterization of samples of bio-renewable plastics.

Wood waste disposal in Illinois / Illinois Department of Energy and Natural Resources, Office of Solid Waste and Renewable Resources.

"ILENR/RR-91/04."

National Energy Policy Act of 1989 (energy efficiency and renewable energy) : hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred First Congress, first session, on S. 324 ... March 14, 1989.

Includes bibliographies.

River of No Return Wilderness proposals : hearing before the Subcommittee on Parks, Recreation, and Renewable Resources of the Committee on Energy and Natural Resources, United States Senate, Ninety-sixth Congress, first session.

Hearings on S.95-97.

BPA in promoting energy conservation and renewables : hearing before the Subcommittee on Water and Power of the Committee on Energy and Natural Resources, United States Senate, One Hundred Seventh Congress, first session to receive testimony on the role of the Bonneville Power Administration in promoting energy conservation and renewables, August 13, 2001, Seattle, WA.

"Printed for the use of the Committee on Energy and Natural Resources."

The renewable resources extension act /

Mode of access: Internet.

A recommended renewable resources program : 1980 update.

Issued Sept. 1980.

A five-year national plan for renewable resources extension programs.

Issued June 1980.