Tag Archives: media release

Using quantum dots and a smartphone to find killer bacteria

Australian scientists develop cheap and rapid way to identify antibiotic-resistant golden staph (MRSA).

Researchers Anwar Sunna (right) and Vinoth Kumar Rajendran with their smartphone-enabled MRSA detector.
Credit: Sunna Lab

A combination of off-the-shelf quantum dot nanotechnology and a smartphone camera soon could allow doctors to identify antibiotic-resistant bacteria in just 40 minutes, potentially saving patient lives.

Staphylococcus aureus (golden staph), is a common form of bacterium that causes serious and sometimes fatal conditions such as pneumonia and heart valve infections. Of particular concern is a strain that does not respond to methicillin, the antibiotic of first resort, and is known as methicillin-resistant S. aureus, or MRSA.

Recent reports estimate that 700 000 deaths globally could be attributed to antimicrobial resistance, such as methicillin-resistance. Rapid identification of MRSA is essential for effective treatment, but current methods make it a challenging process, even within well-equipped hospitals.

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Gender bending: baby turtles influence their own sex

Chinese-Australian research finds climate change good news, and solves an evolutionary mystery

Chinese Pond Turtle (Mauremys reevesii)
Image credit: Wikimedia Commons

Baby turtles influence their gender by moving around inside their eggs, research has revealed.

The idea that an embryo reptile can act in a way that affects its chances of developing as male or female has long been thought impossible, but findings by scientists from China and Australia have now provided clear proof of the process.

The research, published in the journal Current Biology, solves a long-standing evolutionary mystery – and offers hope that at least some species thought especially vulnerable to effects of climate change will prove more robust than thought.

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Anaemic star carries the mark of its ancient ancestor

Australian-led astronomers find the most iron-poor star in the Galaxy, hinting at the nature of the first stars in the Universe.

A visualisation of the formation of the first stars. Credit: Wise, Abel, Kaehler (KIPAC/SLAC)

A newly discovered ancient star containing a record-low amount of iron carries evidence of a class of even older stars, long hypothesised but assumed to have vanished.

In a paper published in the journal Monthly Notices of the Royal Astronomical Society: Letters, researchers led by Dr Thomas Nordlander of the ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) confirm the existence of an ultra-metal-poor red giant star, located in the halo of the Milky Way, on the other side of the Galaxy about 35,000 light-years from Earth.

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