A project to produce more than double the number of galaxy distance measurements than all other previous surveys, could lead to an explanation of one of nature’s biggest mysteries—whether dark energy, an invisible force that opposes gravity, has remained constant or changed since the beginning of time.
Prostate cancers are made up of hungry, growing cells. Now we’ve discovered how to cut off their food supply thanks to a study published in Cancer Research and supported by Movember. More below. Also Australian science discoveries you may have missed from the past week. Heart cells growing in a test-tube – Melbourne How birds […]
Continue reading Dirt solves murder mysteries
South Australian researchers are using the Australian Synchrotron in their work on how to increase levels of iron and other micronutrients in staple grains such as rice and barley. The intense X-rays of the synchrotron can pinpoint where in the grain those micronutrients are found.
One third of the world’s population suffers from iron deficiency. One of the reasons for this is that more than three-quarters of the iron in rice is lost when the outer layers of the grain are removed during milling.
Enzo Lombi and Erica Donner from the Centre for Environmental Risk Assessment and Remediation at the University of South Australia are using the x-ray fluorescence microscopy (XFM) beam to probe grains of rice, barley and other staple grains that have been designed to boost levels of key micronutrients like iron.
The researchers use the intense synchrotron light to produce images showing concentrations of elements, like iron, copper, zinc and selenium.
One of the new plants they are studying is a strain of rice that has multiple copies of the gene for nicotianamine, which is involved in the long-distance transport of iron. The idea is that more iron will be moved into the inner layers of the rice grain.
The technique used by Enzo and Erica is the only one sensitive enough to determine the chemical form of these elements at the low levels found in cereal grains. It will show how much of the iron will be available when it reaches the consumer.
Centre for Environmental Risk Assessment and Remediation, Enzo Lombi, Tel: +61 8 830 26267, Enzo.Lombi@unisa.edu.au
Baker’s yeast could soon be turning sugar cane into jet fuel. Dr Claudia Vickers from the Australian Institute for Bioengineering and Nanotechnology (AIBN) at the University of Queensland leads a team studying strains which already produce ethanol, industrial chemicals and pharmaceuticals.
The researchers want to use the yeast strains S. cerevisiae to make isoprenoids, chemicals traditionally used to make pharmaceuticals and food additives, but which can also serve as fuel.
The idea is to give the yeast new functions, so they can consume sucrose from cane sugar and produce isoprenoid products, which can be used to replace or supplement traditional jet fuel, without modifying existing aircraft engines or infrastructure.
Claudia’s lab was originally looking at the gut bacteria E. coli, which could also be used to produce isoprenoids, but the yeast is now looking more promising.
Other research groups at The University of Queensland and James Cook University are looking to develop aviation fuel from algae and the oilseed tree Pongamia, both of which can be grown without competing with traditional food crops for land or water.
The University’s sustainable aviation fuel initiative has attracted several backers including Boeing, Virgin Australia, Mackay Sugar, Brisbane-based IOR Energy, and the US-based green energy company Amyris. It is funded by the Queensland State Government.
Australian Institute for Bioengineering & Nanotechnology, UQ, Claudia Vickers, Tel: +61 7 334 63158, c.vickers@uq.edu.au, www.aibn.uq.edu.au
“The big problems with morphine are addictiveness and the fact that people develop a tolerance to it,” says Professor David Adams, director of the RMIT Health Innovations Research Institute. “With the painkillers derived from cone snail venom, we don’t have those problems. People don’t develop tolerance, and they don’t get hooked.
The University of Melbourne
Smart capsules could change the way we deliver drugs.
Today, when we’re treated for cancer, the drug spreads throughout the body indiscriminately. Along the way it causes side-effects such as nausea and hair loss. Continue reading A smarter way to deliver drugs
The University of Queensland
Turning to mathematics to allow us to make smarter conservation decisions.
The diversity of life on Earth underpins the global economy. But we’re losing biodiversity at an unprecedented rate and human-induced climate change will threaten more species—up to 37 per cent of the plants and animals with which we share the world. Continue reading Can we save the tiger with mathematics?
James Cook University
Coral interactions more complex than ever suspected.
Dr Tracy Ainsworth’s research is changing our understanding of the life of the tiny coral animals that built Australia’s iconic Great Barrier Reef.
Her work comes at a critical time for the future of coral reefs—threatened by a warming ocean and by coral bleaching. Continue reading The complex life of coral
The magnesium alloy used to house the gearbox of Royal Australian Navy SeaHawk helicopters is prone to severe corrosion in marine environments, costing millions of dollars in maintenance every year. To protect the alloy from corrosion, it is covered with a chrome-based coating that is toxic to humans and the environment.