Light and manganese to discover the source of submerged Roman marble

Light and manganese to discover the source of submerged Roman marble

The Roman Emperors used to spend their summers in the city of Baia, near Naples. With the passage of time, however, the majority of their luxury villas became immersed under water. Italian and Spanish researchers have now applied microscopic and geochemical techniques to confirm that the marble used to cover these ancient Roman buildings came from Carrara and other marble quarries in Turkey and Greece - valuable information for archaeologists and historians.

'Electronic nose' from a Russian scientist will help to diagnose diseases

'Electronic nose' from a Russian scientist will help to diagnose diseases

The device analyzes a gas mixture using semiconductor sensors.

- Smell is determined by a combination of existing gases in the atmosphere. It is found that the conductivity of the semiconductor probe changes during sedimentation of the gas molecules from the atmosphere. This allows determining their presence - says Timur Muksunov. - During manufacture the sensor can be customized to react well to some gases, and react badly to the others.

Menominee Crack is an unusual geological pop-up structure

Menominee Crack is an unusual geological pop-up structure

To a geologist, a rock is not just a rock, and a big crack in the ground is not what it first seems either. One such split, north of Menominee, Michigan, in the state's Upper Peninsula, is a large crack that formed in 2010. Not known for its earthquakes, Michigan is considered aseismic, and the Menominee Crack registered the Upper Peninsula's first recorded earthquake--measured at less than magnitude 1. The feature and its causes were mysterious.

Chinese male teens aren't smoking as much, Saint Louis University research finds

Chinese male teens aren't smoking as much, Saint Louis University research finds

ST. LOUIS - Younger Chinese teenage boys are less likely to start smoking than those born longer ago, according to research from Saint Louis University and Chongqing University.

The trend is significant because nearly one third of the world's smokers live in China. Two-thirds of Chinese men become daily smokers before they turn 25, with the vast majority starting the habit when they were between 15 and 20. By contrast, fewer than 4 percent of females in China smoke, which is why females were not included in the study.

Researchers discover a genetic mutation that prevents diabetes complications

The most significant complications of diabetes include diabetic retinal disease, or retinopathy, and diabetic kidney disease, or nephropathy. Both involve damaged capillaries.

The biggest risk factor associated with damage to the tiny blood vessels is high blood sugar, although genetic factors are also at play. Experiments conducted on both individual cells and laboratory animals indicate that the presence of vitamin B1 inside the cell can prevent the damage caused by high blood sugar.

Baby physics

If we hold a ball and then let go of it and the ball remains suspended in mid-air, even a baby a few months old will be surprised. Just like an adult, the baby expects the ball to fall to the floor. Even at such a young age humans already have some rudimentary knowledge of the behaviour of solids. Now a new study extends this knowledge to add liquids and other non-solids to the "naïve physics" of infants.

Study offers treatment hope for sleep disordered breathing

People with a condition that causes them to stop breathing in their sleep could be helped by new research.

Scientists have gained fresh insights into the signals that regulate breathing during sleep, when oxygen levels are low.

The study could lead to new treatments for the condition called central sleep apnoea - which occurs during sleep disordered breathing and is linked to obesity and type 2 diabetes.

Alcohol-impaired driving crimes spike immediately after drinking age

A new study led by a Northern Medical Program (NMP) researcher shows that alcohol-impaired driving crimes spike immediately after the minimum legal drinking age (MLDA) is reached, indicating that minimum legal drinking age legislation in Canada can have a major impact on young drivers.

Scientific study review reveals health promoting potential of red raspberries

LYNDEN, WA, Feb. 10, 2016 - Components in red raspberries may have anti-inflammatory, anti-oxidative and metabolic stabilizing activity, according to a comprehensive review of the available scientific literature published in the January issue of Advances in Nutrition. These properties shed light on the potential role of red raspberries in helping to reduce the risk of metabolically-based chronic diseases, including cardiovascular disease, diabetes mellitus, obesity, and Alzheimer's disease: all of which share critical metabolic, oxidative, inflammatory links.

Attention problems persist in childhood leukemia survivors treated with chemotherapy alone

Pediatric acute lymphoblastic leukemia (ALL) patients treated with chemotherapy alone remain at risk for attention and learning problems that persist after treatment ends, according to St. Jude Children's Research Hospital investigators. The research appears online this week in the Journal of Clinical Oncology.