Results 31 to 40 of about 397,176 (340)

Determinação de compostos carbonilados e carboxilados em derivados de petróleo

Química Nova, 2012
Although metals and nitrogen/sulfur compounds have been the main concern of the petroleum industry, issues concerning the harmful effects on catalysts poisoning and product contamination by other contaminants such as oxygen-containing compounds have been
Fernanda S. V. Vieira, Márcio V. Rebouças, Jailson B. de Andrade   +2 more
doaj   +1 more source

A Critical Discourse Analysis of Newspaper Texts on the Science of Crude Oil Refining in Nigeria

Journalism and Media, 2022
As a country with a remarkable crude oil deposit, it is a dark irony that Nigeria depends on importation for its petroleum product needs. The devastating impact on Nigeria’s economy of this dependence continues to provoke polemics. Recently, the polemics
Fred A. Amadi, Temple Uwalaka
doaj   +1 more source

Switching the stereochemical outcome of 6-endo-trig cyclizations; Synthesis of 2,6-Cis-6-substituted 4-oxopipecolic acids [PDF]

, 2012
A base-mediated 6-endo-trig cyclization of readily accessible enone-derived α-amino acids has been developed for the direct synthesis of novel 2,6-cis-6- substituted-4-oxo-L-pipecolic acids. A range of aliphatic and aryl side chains were tolerated by
Agami C., Alastair A. Cant, Andrew Sutherland, Bernasconi R., Boger D. L., Cant A. A., Carbonnel S., Fowler L. S., Fowler L. S., Golubev A., Graham L. Simpson, Gutiérrez M. C., Hans Martin Senn, He M., Ireland R. E., Jatoi W. B., Johnson F., Jung J.-C., Kadouri-Puchot C., Lamarre D., Lindsay S. Fowler, Marin J., Mark Daly, Merino P., Occhiato E. G., Occhiato E. G., Purkayastha N., Purkayastha N., Romeo J. T., Romo D., Rudisill D. E., Schenk V. W., Smith A. B., Smith A. B., Smith A. B., Swindells D. C., Tanaka H., Vanderhaeghe H., Weigend F., Zacharius R. M., Zhao Y., Zhao Y.   +41 more
core   +1 more source

A global analysis of coastal flood risk to the petrochemical distribution network in a changing climate

Resilient Cities and Structures, 2022
The global petroleum distribution network already faces a significant threat of disruption due to annual coastal flooding of major refining centers, which is expected to further increase with the effects of climate change.
Kendall M. Capshaw, Jamie E. Padgett
doaj   +1 more source

Prospects of microalgal biodiesel production in Pakistan – a review [PDF]

, 2017
Biodiesel is an alternative, renewable, biodegradable and environmentally friendly fuel for transportation, with properties like petroleum-derived diesel, and can be used directly in a compression ignition engine without any modifications.
Ali, Mehmood, Saleem, Muhammad, Sultana, Razia, Tahir, Sadia, Watson, Ian A.   +4 more
core   +1 more source

Petroleum in Production and Review [PDF]

Nature, 1950
Conversion of Petroleum Production of Motor Fuels by Thermal and Catalytic Processes. By Dr. A. N. Sachanen. Second edition, revised and enlarged. Pp. xii + 602. (New York: Reinhold Publishing Corporation; London: Chapman and Hall, Ltd., 1948.) 66s. net. Petroleum Production By Park J. Jones. Vol. 5: Oil Production by Gas and Flooding. Pp.
openaire   +2 more sources

A nucleotide‐independent, pan‐RAS‐targeted DARPin elicits anti‐tumor activity in a multimodal manner

Molecular Oncology, EarlyView.
We report a Designed Ankyrin Repeat Protein that binds and inhibits RAS proteins, which serve as central cell signaling hubs and are essential for the progression of many cancers. Its unique feature is that it does not discriminate between different RAS isoforms or mutations and is capable of binding to RAS in both its active (GTP‐bound) and inactive ...
Jonas N. Kapp, Wouter P. R. Verdurmen, Jonas V. Schaefer, Kari Kopra, Gabriela Nagy‐Davidescu, Elodie Richard, Marie‐Julie Nokin, Patrick Ernst, Rastislav Tamaskovic, Martin Schwill, Ralph Degen, Claudia Scholl, David Santamaria, Andreas Plückthun   +13 more
wiley   +1 more source

Information about petroleum in America prior to the nineteenth Century [PDF]

, 2010
The petroleum substances have been used a lot of centuries ago: bitumen has been used in Neolithic Period to fix head's hammer of stone and to set beads.
Mazadiego Martínez, Luis Felipe, Ortiz Menéndez, José Eugenio, Puche Riart, Octavio   +2 more
core   +1 more source

Nitric oxide‐forming nitrite reductases in the anaerobic ammonium oxidizer Kuenenia stuttgartiensis

FEBS Open Bio, EarlyView.
Anammox bacteria remove fixed nitrogen from their environment via anaerobic ammonium oxidation (anammox) with nitrite as electron acceptor and dinitrogen gas as product. The first anammox step is the conversion of nitrite to nitric oxide by nitrite reductase.
Femke J. Vermeir, Lotte W. Nijman, Robert S. Jansen, Laura van Niftrik, Wouter Versantvoort   +4 more
wiley   +1 more source

Biochar as a sustainable product for remediation of petroleum contaminated soil

Current Research in Green and Sustainable Chemistry, 2021
Globally, petroleum has been the largest source of energy consumption compared to other energy sources such as natural gas and coal. As a result of high demand for petroleum as an energy source, contamination takes place due to maintenance, production ...
Mohammad Ali Zahed, Samira Salehi, Rozita Madadi, Faranak Hejabi   +3 more
doaj   +1 more source