Effects of clay amendment on adsorption and desorption of copper in water repellent soils

Copper is an important micronutrient and trace amounts are essential for crop growth. However, high concentrations of copper will produce toxic effects. Australia is increasingly developing production of crops in water repellent soils. Clay amendment, a common amelioration techniques used in Australia, has demonstrated agronomic benefits in increased crop or pasture production. The sorption and desorption of copper and the effect of clay treatment on copper behaviour in a water repellent soil collected from an experimental farm in South Australia is studied. We found that the water repellent soils amended with clay have an increased adsorption capacity of copper. Also the clay-amended soils had an increased ratio of specific sorption to total sorption of copper. The implications of this study to the sustainable agro-environmental management of water repellent soils is discussed.

Visionnaire 2010

Visionnaire 2010 : A screening of 15 postgraduate and masters films.

Two hundred and two - Daniella Said, Adam Green, Phoebe Beasley, Juntra Santitarangkun, Olexander Barnes & Rhett Ortlipp.
Gone to see - Sean Rafter.
Hippocratic oath - Nathan Primer, Daniel Merei, Melina Flood, Michael Dearnley, Mathew Karanicolas & Nicholas White.
The other voices - Tania Raouf.
Standover - Nicholas Hancock, Ryan Thomas, David Hurley, Nicholas Weller, Mitch McTaggart & Djorvan Caro.
Sisters - Kailai Gu.
Escape - Jonathan Burton, Simon Todd, Todd Johnson, Amanda Klimos, James Murphy, Ola Gytri & Max Reed.
Welcome to the Anderson's - Maneesha Jacob.
Hannah - Jodi Deutrom, Ardimas Andi, Ben Engeset, Kim Han Law, Steffen Hagen & Timotius.
Hour3 - Akanksha Shakya.
3-25-6 - Syamsul Azhar, Ethan Bottomley, Tiffany Dalton, Kane Gloury, Alexandra Latimer & Lene Moerch.
Seher and others - Bircan Eral.
Edward Barsky - Breidi Boyle, Bree Mansell, Simon DeNatris & Murphy McLachlan.
Detecting Calvin - Kara Tyson, Aimee Linossier, Jessica Ruffino, Seamus Parkinson, Dean Sacco & Simon Holt.
Double date - Adriana Bizzarri, Matthew Smolen, Effie Telianidis, Oliver Kerr, Lucy Ramshaw & Luisa Tascone.

Reduction of oxygen in a trialkoxy ammonium-based ionic liquid and the role of water

The oxygen reduction reaction in a novel trialkoxy ammonium-based ionic liquid, N-ethyl-2-(2-methoxyethoxy)-N,N-bis(2-(2-methoxyethoxy)ethyl)ethan-1-aminium bis(trifluoromethylsulfonyl)imide, [N2(20201)(20201)(20201)] [NTf2] has been studied on glassy carbon and gold electrodes, showing faster electrokinetics on glass carbon because of weaker adsorption of the IL. This has been demonstrated by theoretical calculations and electrochemical studies. In the neat IL, the oxygen is reduced to superoxide (O2 -) through a one electron process; however, better performance is attained in the presence of water (42 mol%), in terms of current density, and onset potential of the reduction process via a reversible 2-electron process. Furthermore, a remarkable increase in cyclic coulombic efficiency is observed for the wet IL (66% in comparison with the neat IL (24%), showing the practicality of a reversible O2/H2O2 system for energy storage.

Methodological comparisons of heart rate variability analysis in patients with type 2 diabetes and angiotensin converting enzyme polymorphism

Angiotensin converting enzyme (ACE) polymorphism has been shown to be important in hypertension progression and also in diabetes complications, especially associated with heart disease. Heart rate variability (HRV) is an established measure for classification of autonomic function regulating heart rate, based on the interbeat interval time series derived from a raw ECG recording. Results of this paper show that the length (number of interbeat intervals) and preprocessing of the tachogram affect the HRV analysis outcome. The comparison was based on tachogram lengths of 250, 300, 350, and 400 RR-intervals and five preprocessing approaches. An automated adaptive preprocessing method for the heart rate biosignal and tachogram length of 400 interbeat intervals provided the best classification. HRV results differed for the Type 2 Diabetes Mellitus (T2DM) group between the I/I genotype and the I/D and D/D genotypes, whereas for controls there was no significant difference in HRV between genotypes. Selecting an appropriate length of recording and automated preprocessing has confirmed that there is an effect of ACE polymorphism including the I/I genotype and that I/I should not be combined with I/D genotype in determining the extent of autonomic modulation of the heart rate.