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高电压技术 2011年第11期37卷 2836-2842页

作者： lukas graber Diomar Infante Michael Steurer William W.Brey Center for Advanced Power Systems.Florida State University Tallahassee.FL32310 USA National High Magnetic Field Laboratory Florida State UniversityTallahasseeFL32310 USA

Careful analysis of transients in shipboard power systems is important to achieve long life times of the components in future all-electric *** order to accomplish results with high accuracy,it is recommended to validate cable models as they have significant influence on the amplitude and frequency spectrum of voltage *** authors propose comparison of model and measurement using scattering *** can be easily obtained from measurement and simulation and deliver broadband information about the accuracy of the *** measurement can be performed using a vector network *** process to extract scattering parameters from simulation models is explained in *** different simulation models of a 5 kV XLPE power cable have been *** chosen approach delivers an efficient tool to quickly estimate the quality of a model.

关键词： transients cable power system scattering parameters modeling simulation

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Feeding Biochar to Cows:An Innovative Solution for Improving Soil Fertility and Farm Productivity

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Pedosphere 2015年第5期25卷 666-679页

作者： Stephen JOSEPH Doug POW Kathy DAWSON David R.G.MITCHELL Aditya RAWAL James HOOK Sarasadat TAHERYMOOSAVI lukas VAN ZWIETEN Joshua RUST Scott DONNE Paul MUNROE Ben PACE Ellen graber Torsten THOMAS Shaun NIELSEN Jun YE Yun LIN PAN Genxing LI Lianqing Zakaria M.SOLAIMAN Discipline of Chemistry University of Newcastle School of Materials Science and Engineering University of New South Wales Electron Microscopy Center AIIMUniversity of Wollongong Institute of Resources Ecosystem and Environment of AgricultureNanjing Agricultural University Marron Brook Farm Warren Catchments Council 52 Bath StManjimup 6258 (Australia) Mark Wainwright Analytical Centre University of New South Wales Wollongbar Primary Industries Institute NSW Department of Primary Industries Institute of Soil Water and Environmental SciencesThe Volcani CenterAgricultural Research Organization Centre for Marine Bio-Innovation School of Biotechnology and Biomolecular SciencesThe University of New South Wales Soil Biology and Molecular Ecology Group School of Earth and Environment (M087)The University of Western Australia

Addition of biochar produced through thermal decomposition of biomass has been seen as a strategy to improve soils and to sequester carbon （C）, but wide scale implementation of the technology requires to devise innovative profitable solutions. To develop biochar utilisation with an integrated system approach, an innovative program was implemented in 2012 on a 53-ha farm in Western Australia to determine the costs and benefits of integrating biochar with animal husbandry and improvement of pastures. Biochar was mixed with molasses and fed directly to cows. The dung-biochar mixture was incorporated into the soft profile by dung beetles. We studied the changes in soil properties over 3 years. Biochar extracted from fresh dung and from the soil to a depth of 40 cm was characterised. A preliminary financial analysis of the costs and benefits of this integrated approach was also undertaken. The preliminary investigation results suggested that this strategy was effective in improving soil properties and increasing returns to the farmer. It was also concluded that the biochar adsorbed nutrients from the cow＇s gut and from the dung. Dung beetles could transport this nutrient-rich biochar into the soil profile. There was little evidence that the recalcitrant component of the biochar was reduced through reactions inside the gut or on/in the soil. Further research is required to quantify the long-term impact of integrating biochar and dung beetles into the rearing of cows.

关键词： animal husbandry biochar C sequestration dung beetles financial benefit pasture

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