Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Selected Works

Engineering

2010

Articles 1 - 9 of 9

Full-Text Articles in Life Sciences

Accident In Bhopal: Observations 20 Years Later, Ronald J. Willey, Dennis C. Hendershot, Scott Berger Oct 2010

Accident In Bhopal: Observations 20 Years Later, Ronald J. Willey, Dennis C. Hendershot, Scott Berger

Ronald J. Willey

The most influential process safety accident passed its 20th anniversary on Dec 3, 2004. At an international symposium to mark the event in Kanpur, India during the week of this anniversary, process safety practitioners from around the world assembled to discuss progress in resolving the Bhopal tragedy and in advancing the practice of process safety worldwide. This paper reports the main conclusions from the conference, and provides insight into the Bhopal site as attendees found it in December 2004. Since 1984, many positive steps worldwide have been made in regards to improvements in process safety and protection of personnel within …

Go to article

Balancing Limiting Factors & Economic Drivers For Sustainable Midwestern Us Agricultural Residue Feedstock Supplies, Wally W. Wilhelm, J. Richard Hess, Douglas L. Karlen, Jane M. F. Johnson, David J. Muth Jr., John M. Baker, Hero T. Gollany, Jeff M. Novak, Diane E. Scott, Gary E. Varvel Sep 2010

Balancing Limiting Factors & Economic Drivers For Sustainable Midwestern Us Agricultural Residue Feedstock Supplies, Wally W. Wilhelm, J. Richard Hess, Douglas L. Karlen, Jane M. F. Johnson, David J. Muth Jr., John M. Baker, Hero T. Gollany, Jeff M. Novak, Diane E. Scott, Gary E. Varvel

Douglas L Karlen

Advanced biofuels will be developed using cellulosic feedstock rather than grain or oilseed crops that can also be used for food and feed. To be sustainable, these new agronomic production systems must be economically viable without degrading the soil and other natural resources. This review examines six agronomic factors that collectively define many of the limits and opportunities for harvesting crop residue for biofuel feedstock in the midwestern United States. The limiting factors include soil organic carbon, wind and water erosion, plant nutrient balance, soil water and temperature dynamics, soil compaction, and off-site environmental impacts. These are discussed in relationship …

Go to article

Münch, Morphology, Microfluidics – Our Structural Problem With The Phloem [Review Article], Michael Knoblauch, Winfried S. Peters Aug 2010

Münch, Morphology, Microfluidics – Our Structural Problem With The Phloem [Review Article], Michael Knoblauch, Winfried S. Peters

Winfried S. Peters

The sieve tubes of the phloem are enigmatic structures. Their role as channels for the distribution of assimilates was established in the 19th century, but their sensitivity to disturbations has hampered the elucidation of their transport mechanisms and its regulation ever since. Ernst Münch's classical monograph of 1930 is generally regarded as the first coherent theory of phloem transport, but the ‘Münchian’ pressure flow mechanism had been discussed already before the turn of the century. Münch's impact rather rested on his simple physical models of the phloem that visualized pressure flow in an intuitive way, and we argue that the …

Go to article

Letter To Faa Administrator Re: Usair 1549 Crash, Paul F. Eschenfelder, Russell P. Defusco Phd, Richard Sowden Jun 2010

Letter To Faa Administrator Re: Usair 1549 Crash, Paul F. Eschenfelder, Russell P. Defusco Phd, Richard Sowden

Paul F. Eschenfelder

No abstract provided.

Go to article

Antimicrobial And Antioxidant Activities Of Essential Oil And Methanol Extract Of Jasminum Sambac From Djibouti, Fatou Abdoul-Latif, Prosper Edou, François Eba, Nabil Mohamed, Adwa Ali, Samatar Djama, Louis-Clément Obame, Mamoudou Hama Dicko Mar 2010

Antimicrobial And Antioxidant Activities Of Essential Oil And Methanol Extract Of Jasminum Sambac From Djibouti, Fatou Abdoul-Latif, Prosper Edou, François Eba, Nabil Mohamed, Adwa Ali, Samatar Djama, Louis-Clément Obame, Mamoudou Hama Dicko

Pr. Mamoudou H. DICKO, PhD

The essential oil of jasminum sambac from Djibouti was subjected to screening for their possible antioxidant activity by two complementary test systems, namely DPPH free radical scavenging and beta-carotene-linoleic acid assays. Butylated hydroxytoluene (BHT) was used as positive control in both test systems. In the DPPH test system, the IC50 value of essential oil and methanol extract were respectively 7.43 and 2.30 μg/ml. In the beta-carotene-linoleic acid system, oxidation was effectively inhibited by Jasminum sambac, the RAA value of essential oil and methanol extract were respectively 96.6 and 93.9%. When compared to BHT, the essential oil and methanol extract had …

Go to article

Beethoven: Patriotism And Social Justice, Fathi Habashi Feb 2010

Beethoven: Patriotism And Social Justice, Fathi Habashi

Fathi Habashi

The great composer Ludwig van Beethoven was not only an exceptional musician but also a man of great ideals who expressed social justice in his music

Go to article

Erau Aviation Wildlife Hazard Newsletter, Paul F. Eschenfelder Dec 2009

Erau Aviation Wildlife Hazard Newsletter, Paul F. Eschenfelder

Paul F. Eschenfelder

No abstract provided.

Go to article

Airport Wildlife Hazard Control, Paul F. Eschenfelder Dec 2009

Airport Wildlife Hazard Control, Paul F. Eschenfelder

Paul F. Eschenfelder

No abstract provided.

Go to article

Mining And Civilization, An Illustrated History, Fathi Habashi Dec 2009

Mining And Civilization, An Illustrated History, Fathi Habashi

Fathi Habashi

Mining and Civilization has been conceived to compliment the author's two books History of Metallurgy and Readings in Historical Metallurgy and to fill a gap in the literature. It is difficult to study the history of metallurgy without studying the history of mining at the same time. Each time the author visits ancient ruins or examines an ancient stone statue he recalls the work of miners who brought the material from a quarry so that the sculptor can create a work of art. History of mining, quarrying, and stone carving is history of civilization.

Go to article