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Synthesis and Magnetic Properties of Cobalt Ferrite Nanoparticles
- Morad F. Etier, Vladimir V. Shvartsman, Frank Stromberg, Joachim Landers, Heiko Wende, Doru C. Lupascu
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- Journal:
- MRS Online Proceedings Library Archive / Volume 1398 / 2012
- Published online by Cambridge University Press:
- 25 April 2012, mrsf11-1398-q08-06
- Print publication:
- 2012
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- Article
- Export citation
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Nanopowders of cobalt iron oxide (CoFe2O4) were successfully fabricated by the co-precipitation method followed by a technique to prevent particle agglomeration. Particle sizes were in the range of 24 to 44 nm. The size of cobalt iron oxide particles decreases with increasing the concentration of the precipitation agent. The crystal structure was confirmed by X-ray diffraction (XRD), the chemical composition by energy dispersive spectroscopy (EDS), and phase changes by thermogravimetric differential thermal analysis (TGA-TDA). The particle morphology was analyzed by scanning electron microscopy (SEM). Magnetic properties were investigated by SQUID magnetometry and Mössbauer spectroscopy. Being nearly monodisperse and non-agglomerated the prepared cobalt iron oxide powders are the base for synthesizing magnetoelectric composites embedded in a ferroelectric BaTiO3 matrix.
1 - Genome and proteome analysis of industrial fungi
- from I - Comparative and functional fungal genomics
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- By S. E. Baker, Fungal Biotechnology Team MSIN: K2–12 Chemical and Biological Processes Development Group Pacific Northwest National Laboratory 902 Battelle Blvd. Richland WA 99352 USA, C. F. Wend, Fungal Biotechnology Team MSIN: K2–12 Chemical and Biological Processes Development Group Pacific Northwest National Laboratory 902 Battelle Blvd. Richland WA 99352 USA, D. Martinez, Genome Annotation and Analysis Joint Genome Institute Los Alamos National Laboratory Los Alamos NM 87545 USA, J. K. Magnuson, Fungal Biotechnology Team MSIN: K2–12 Chemical and Biological Processes Development Group Pacific Northwest National Laboratory 902 Battelle Blvd. Richland WA 99352 USA, E. A. Panisko, Fungal Biotechnology Team MSIN: K2–12 Chemical and Biological Processes Development Group Pacific Northwest National Laboratory 902 Battelle Blvd. Richland WA 99352 USA, Z. Dai, Fungal Biotechnology Team MSIN: K2–12 Chemical and Biological Processes Development Group Pacific Northwest National Laboratory 902 Battelle Blvd. Richland WA 99352 USA, K. S. Bruno, Fungal Biotechnology Team MSIN: K2–12 Chemical and Biological Processes Development Group Pacific Northwest National Laboratory 902 Battelle Blvd. Richland WA 99352 USA, K. K. Anderson, Decision & Sensor Analytics Pacific Northwest National Laboratory 906 Battelle Blvd. Richland WA 99352 USA, M. E. Monroe, Biological Separations and Mass Spectrometry Pacific Northwest National Laboratory 3335 Q Avenue Richland WA 99352 USA, D. S. Daly, Statistical Sciences Pacific Northwest National Laboratory 3180 George Washington Way Richland WA 99352 USA, L. L. Lasure, Fungal Biotechnology Team MSIN: K2–12 Chemical and Biological Processes Development Group Pacific Northwest National Laboratory 902 Battelle Blvd. Richland WA 99352 USA
- Edited by G. D. Robson, University of Manchester, Pieter van West, University of Aberdeen, Geoffrey Gadd, University of Dundee
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- Book:
- Exploitation of Fungi
- Published online:
- 05 October 2013
- Print publication:
- 24 May 2007, pp 3-9
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- Chapter
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Summary
Background
In order to decrease dependence on petroleum, the United States Department of Energy (USDOE) Office of the Biomass Program (OBP) is investing in research and development to enable its vision of the biorefinery. The biorefinery will decrease the use of petroleum through conversion of biomass such as crops or agricultural waste into fuels and products.
In 2004, the USDOE OBP asked researchers at the Pacific Northwest National Laboratory (PNNL) and the National Renewable Energy Laboratory (NREL) to prepare a list of the top ten building-block chemicals that can be derived from simple sugars by biological and/or chemical means. The resulting list of twelve building-block chemicals and the accompanying report (www.eere.energy.gov/biomass/pdfs/35523.pdf) form an informational foundation on which future DOE and industry bioproducts research will be built (Table 1.1).
How do fungi fit into the biorefinery? Analysis of the ‘top ten’ study indicates that nine of the top twelve chemical building blocks are currently produced, or may potentially be produced, by fungal fermentation processes. However, a significant barrier to the use of bio-based products is the economic feasibility – fuels and products must be price-competitive with those derived from petroleum. An obvious way to decrease the costs of biobased products from fungi is to make fermentation strains more productive and processes more efficient. Traditional strain improvement programmes typically span a timescale measured in decades and process development done through the use of batch cultures is extremely labour intensive.