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To develop the sensor, the researchers from Pennsylvania State University in the US used a protein they recently described and subsequently used to explore the biology of bacteria that use lanthanides. Pixabay

Researchers have developed a new protein-based sensor that can detect lanthanides, the rare earth metals used in smartphones and other technologies, in a more efficient and cost-effective way.

The sensor changes its fluorescence when it binds to these metals, according to the study published online in the Journal of the American Chemical Society.


The protein undergoes a shape change when it binds to lanthanides, which is key for the sensor’s fluorescence to “turn on”, said the study.


“These elements are called rare earths, and they include chemical elements of atomic weight 57 to 71 on the periodic table,” Cotruvo added. Pixabay

To develop the sensor, the researchers from Pennsylvania State University in the US used a protein they recently described and subsequently used to explore the biology of bacteria that use lanthanides.

“Lanthanides are used in a variety of current technologies, including the screens and electronics of smartphones, batteries of electric cars, satellites, and lasers,” said Joseph Cotruvo, Assistant Professor at Penn State and senior author of the study.


The sensor changes its fluorescence when it binds to these metals, according to the study published online in the Journal of the American Chemical Society. Pixabay

“These elements are called rare earths, and they include chemical elements of atomic weight 57 to 71 on the periodic table,” Cotruvo added.

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Extracting rare earths from the environment or from industrial samples, like waste water from mines or coal waste products, is generally very challenging and expensive.

“We developed a protein-based sensor that can detect tiny amounts of lanthanides in a sample, letting us know if it’s worth investing resources to extract these important metals,” Cotruvo said. (IANS)


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Basil Leaves

Basil scientifically called Ocimum basilicum, and also known as great basil, is a culinary herb from the Lamiaceae (mints) family. A common aromatic herb, it is usually used to add flavor to a variety of recipes, but what may astonish one is that there are various health benefits of basil that make it well-known for its immunity-enhancing properties.

Basil seeds or basil essential oil are proven to help prevent a wide range of health conditions, which makes it one of the most essential medical herbs known today. Basil has vitamin A, C, E, K, and Omega 3 components including cooling components too. It also contains minerals like Copper, Calcium, Manganese, Phosphorus, Zinc, and Potassium. An ancient Ayurvedic herb, basil has various proven benefits including being anti-inflammatory, ant-oxidant, immune-booster, pain-reducer, and blood vessel-protector.

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This herb also contains cooling components thus making it really helpful for summers. It detoxifies the body and maintains one's body temperature pace. Adding to the benefits Basil contains antioxidant-rich volatile essential oils, which are considered hydrophobic, meaning they don't dissolve in water and are light and small enough to travel through the air and the pores within our skin. Basil's volatile essential oil is something that gives the herb its distinct smell and taste, but basil contains some great healing properties.

In the long history of Ayurveda, basil seeds were also called tukmaria seeds. These seeds may support one's gut health, may complete one's fiber quota, reduce blood sugar, help in weight loss, and also reduce cholesterol.

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When you're pregnant, the immune system is seeing the placenta for the first time in decades.

The US researchers have discovered a class of immune cells that plays a role in miscarriage, which affects about a quarter of pregnancies.

Researchers at the University of California-San Francisco found that the recently discovered subset of cells known as extrathymic Aire-expressing cells in the immune system may prevent the mother's immune system from attacking the placenta and fetus.

The researchers showed that pregnant mice who did not have this subset of cells were twice as likely to miscarry, and in many of these pregnancies fetal growth was severely restricted.

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"When you're pregnant, the immune system is seeing the placenta for the first time in decades -- not since the mother made a placenta when she herself was a fetus," said Eva Gillis-Buck, from UCSF.

"Our research suggests that this subset of immune cells is carrying out a sort of 'secondary education' -- sometimes many years after the better-known population of the educator cells have carried out the primary education in the thymus -- teaching T cells not to attack the fetus, the placenta and other tissues involved in pregnancy," she added. The findings are published in the journal Science Immunology.

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