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Archive for February, 2007|Monthly archive page

Homeland Security Presidential Directive/HSPD-18

In Uncategorized on February 12, 2007 at 4:15 am

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some other books may be of interest

In Uncategorized on February 11, 2007 at 3:16 am

Disease Control Priorities in developing countries

Global Burden of Disease

Priorities in Health

Health, United States 2005

In Health on February 11, 2007 at 3:00 am

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Engineer: GPS Shoes Make People Findable

In Uncategorized on February 9, 2007 at 6:34 pm

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Nanotech and the environment

In nano on February 6, 2007 at 4:11 am

see here part of the bigger UN Environment report GEO Year Book 2007

NBICS and Military Products

In nano on February 6, 2007 at 1:25 am

my new column is out

Impact of Nanotechnology in Water and Wastewater Treatment

In nano on February 3, 2007 at 12:39 am

Technology Overview

Demand for Clean Water Drives Advances in Water and Wastewater Treatment

With the rising need for clean water and subsequent increase in generation of wastewater, it has become mandatory to treat wastewater in order to obtain high-quality pure water. Nanotechnology is generally used in areas where there is a need for attacking the molecular level of the substances. “Various forms of nanotechnology such as, nanomembranes and nanoporous zeolites are being used for the treatment of water and wastewater,” according to the analyst of the study. “Though the pace of advancement of nanotechnology has been slow with respect to water and wastewater treatment, industrialists are researching various kinds of nanotechnology to effectively treat water and wastewater.”

The primary motive for wastewater treatment is that less than 1 percent of the world’s water is suitable for drinking while the remaining is brackish. As a result, there is a growing need for fresh and clean water especially for drinking purposes. This escalates the need for technologies that produce high quality water after treatment that do not cause any detrimental effect to human beings or the environment. Utilizing nanotechnology for water and wastewater treatment would certainly make previously unusable water sources such as brackish water, seawater, and other wastewater as an available source of water supply.

Multiple Benefits of Nanotechnology Encourages Widespread Uptake in Water and Wastewater Treatment

The quality of water that is obtained after the adoption of nanotechnology is well within the requirements of agencies such as Environmental Protection Agency (EPA). It has been determined that these nano-based filters are able to achieve 99.95 percent efficiency, when compared to conventional technologies. As a result, the water or effluent that is obtained after the treatment could be reused for various domestic and industrial applications.

Nanotechnology even removes protozoan cysts, oocysts, and helminth ova and in some cases bacteria and viruses from the water. “Nanotechnology also provides more effective alternatives to the treatment of contaminants such as mercury, arsenic, and perchlorate,” explains the analyst. “As the impact of these contaminants on humans is gradually realized, it has become increasingly essential to monitor them at trace levels, which is impossible with conventional treatment methods.”

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Nanotechnology patent lawsuit ruling

In nano on February 3, 2007 at 12:35 am

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Know Your Nano!

In nano on February 2, 2007 at 10:03 pm

Center for Technology Assessment, TA Swiss, Know Your Nano! publifocus Nanotechnology, Health and the Environment, http://www.ta-swiss.ch/a/nano_pfna/2006_TAP8_IB_Nanotechnologien_e.pdf, 2006 –

Prevalence of Overweight Among Children and Adolescents: United States, 2003-2004

In Health on February 2, 2007 at 10:01 pm

http://www.cdc.gov/nchs/products/pubs/pubd/hestats/overweight/overwght_child_03.htm

Reports that an estimated 17% of children and adolescents aged 2-19 are overweight. Also offers data on recent trends. From the National Center for Health Statistics.

Nanoengineered Concrete Could Cut Carbon Dioxide Emissions

In nano on February 2, 2007 at 9:59 pm

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Human metabolome database

In Uncategorized on February 2, 2007 at 9:56 pm

Canadian scientists have announced the completion of the first draft of the human metabolome, the chemical equivalent of the human genome, as published in the latest issue of Nucleic Acid Research (full text freely accessible). The metabolome is the complete complement of all small molecule chemicals (metabolites) found in or produced by an organism.
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Tactical Biorefinery

In Uncategorized on February 2, 2007 at 9:42 pm

A group of scientists have created a portable refinery that efficiently converts food, paper and plastic trash into electricity. The machine, designed for the U.S. military, would allow soldiers in the field to convert waste into power and could have widespread civilian applications in the future.

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