Knowledge Update

​New York, April 4 (IANS) In a first, a team of US researchers used 3D printing technique to create a handheld sponge-like structure that could help in mitigating pollution.

Led by chemistry professor Matthew Hartings from American University, the researchers demonstrated how to use commercial 3D printers to create a structure with active

​Tokyo, April 4 (IANS/WAM) Kuwait's crude oil exports to Japan jumped 12.2 percent in February from a year earlier to 8.13 million barrels, or 280,000 barrels per day (bpd) -- up for the second month in a row, government data showed.

New York, April 4 (IANS) A single dose of oxytocin nasal spray, known to cut food intake, can lower impulsive behaviour in overweight and obese men, say researchers.

Oxytocin nasal spray is a synthetic version of the hormone oxytocin which is important for controlling food intake and weight.

"Our preliminary results in men are promising. Oxytocin nasal spray showed no strong side effects and is not as invasive as obesity surgery," said Franziska Plessow, an instructor in medicine at Harvard Medical School.

Results of their new pilot study in 10 overweight and obese men suggest that one way oxytocin lowers food intake might be by improving self-control.

"Knowing the mechanisms of action of intranasal oxytocin is important to investigating oxytocin as a novel treatment strategy for obesity," Plessow added.

Participants took a psychology research test on two occasions 15 minutes after they self-administered a dose of nasal spray in each nostril.

In a randomly assigned order, one day they received oxytocin and another they received a placebo or dummy drug.

After receiving oxytocin, participants were acting less impulsively and exerting more control over their behaviour after receiving oxytocin.

More study is necessary to determine how oxytocin alters self-control and how important this mechanism is in regulating food intake since not all overeating relates to poor self-control.

The information may allow scientists to move forward to large clinical trials, identify who can benefit from the drug, and help optimise the treatment. They also will need to test the drug in women.

The preliminary study was presented at the Endocrine Society's 98th annual meeting in Boston last weekend.​

​New York, April 4 (IANS) A person's age and gender can affect the prevalence of certain types of peripheral vascular diseases (PVD), which can lead to heart attack, stroke and even amputation of the limbs.

PVD is a circulation disorder that affects blood vessels outside of the heart and brain, particularly the veins and arteries that supply blood to the arms and legs. 

The results revealed that women, especially younger women, have a significantly higher prevalence of peripheral artery disease than men.

"These findings point to very important differences between women and men, and older and younger individuals, when it comes to PVD," said one of the researchers, Jeffrey S. Berger, associate professor at NYU Langone Medical Centre in New York, US. 

"Sex-specific guidelines for PVD are important, and we are starting to realise that women and men need to be approached differently," Berger added.

In addition, diabetes was found to be a major risk factor for developing PVD, even in patients without heart disease.

The team used data collected from more than 3.6 million individuals and found that people with both diabetes and coronary heart disease the risk of developing PVD increases.

However, the researchers cautioned that the findings might not represent PVD prevalence in all men and women, or disease risk in people with diabetes. 

The findings were presented at the American College of Cardiology's 65th Annual Scientific Session in Chicago, US.​

​New York, April 5 (IANS) El Nino - the climate cycle that develops along the tropical west coast of South America every three to seven years - can have huge impact on the marine food chain with rippling effect on fisheries and the livelihoods of fishermen, says a new NASA study.

El Nino's mass of warm water puts a lid on the normal currents of cold, deep water that typically rise to the surface along the Equator and off the coast of Chile and Peru, said Stephanie Uz, from NASA's Goddard Space Flight Centre in Greenbelt, Maryland.

In a process called upwelling, those cold waters normally bring up the nutrients that feed the tiny organisms, which form the base of the food chain.

These tiny plants, called phytoplankton, are fish food -- without them, fish populations drop, and the fishing industries that many coastal regions depend on can collapse.

"An El Nino basically stops the normal upwelling," Uz said, adding that "there's a lot of starvation that happens to the marine food web". 

Uz's team used NASA satellite data and ocean colour software called SeaDAS to find out El Nino's impact on phytoplankton. 

From shades of blue and green, scientists calculated the amount of green chlorophyll -- and therefore the amount of phytoplankton present.

They found that in December 2015, at the peak of the current El Nino event, there was more blue -- and less green chlorophyll -- in the Pacific Ocean off of Peru and Chile, compared to the previous year. 

After analysing data from the large 1997-1998 El Nino event, the researchers said the green chlorophyll virtually disappeared from the coast of Chile. 

In 1997-1998, the biggest ocean temperature abnormalities were in the eastern Pacific Ocean. But this year's event caused a drop in chlorophyll primarily along the equator, the study said. 

"We know how important phytoplankton are for the marine food web, and we're trying to understand their role as a carbon pump," Uz said. 

Other scientists at Goddard are investigating ways to forecast the ebbs and flows of nutrients using the centre's supercomputers, incorporating data like winds, sea surface temperatures, air pressures and more.​

Taipei, April 3 (IANS) People with type 1 diabetes are three times more prone to the risk of developing epilepsy later in life, finds a new research.

The findings revealed that in patients with type 1 diabetes, the risk of developing epilepsy -- a neurological disorder -- was significantly higher than that in patients without the disease.

Also, an excess of glucose in the bloodstream known as hyperglycaemia and deficiency of glucose in the bloodstream, known as hypoglycaemia, can alter the balance between the inhibition and excitation of neuronal networks and cause focal motor seizures.

Immune abnormalities, brain lesions, genetic factors and metabolic abnormalities have been identified as the potential causes for the link between type 1 diabetes and epilepsy.

In addition, younger age has been linked with an increased risk of developing epilepsy, the researchers said.

"This result is consistent with those of previous studies in that epilepsy or seizures are observed in many autoimmune or inflammatory disorders and are linked to the primary disease, or secondary to pro-inflammatory processes," said I-Ching Chou from China Medical University in Taiwan.

In the study, published in the journal Diabetologia, computer modelling was used to estimate the effects of type 1 diabetes on epilepsy risk.

The study cohort contained 2,568 patients with type 1 diabetes, each of whose frequency was matched by sex, urbanisation of residence area and index year with 10 control patients without type 1 diabetes.

The results showed that the type 1 diabetes the cohort was 2.84 times more likely to develop epilepsy than the control cohort.​

​New York, April 4 (IANS) Internet giant Google has released a new feature, Google Search, that will enable parents to teach children about different noises that animals make.

A quick search for "animal noises" on Google returns illustrations of animals, their names and a sample of what sound do they make, Mashable tech website reported.

Sydney, April 3 (IANS) India's Adani Enterprises may soon start work on the mega Carmichael coal project in Australia after securing leases following the final environmental clearance by the government.

​New York, April 3 (IANS) A team of US researchers has found that monetary rewards for healthy behaviour can pay off both in the pocketbook and in positive psychological factors like internal motivation to eat fruits and vegetables.

The study, which encouraged daily consumption of fruits and vegetables in exchange for payment, not only showed monetary incentives worked, but that participants increased their internal motivation to eat fruits and vegetables over time.

Increased fruit and vegetable consumption by participants is linked to more positive attitudes and self efficacy - the confidence in one's own ability to succeed

"While programs involving monetary incentives to encourage healthy behaviour have become more popular in recent years, the evidence has been mixed as to how they can be most effective and how participants fare once the incentives stop," said lead author Casey Gardiner from University of Colorado Boulder in US.

"Some psychological research and theories suggest that if individuals have external motivations like payment to perform tasks, their internal, or intrinsic motivation can be undermined," said Gardiner of the psychology and neuroscience department.

The findings showed that participants who were assigned to receive payment for eating fruits and vegetables were still consuming more than usual two weeks after the study ended.

In the study, 60 adults were randomly assigned to three different groups.

Individuals in one group received $1 for every serving of fruits and vegetables they reported consuming daily over a three-week period.

People in the second group accrued $1 for every serving of fruits and vegetables eaten, with the lump sum money delivered at the end of the study.

Participants in the third group reported their fruit and vegetable consumption daily for three weeks with no incentives.

The participants who received daily monetary incentives had the greatest increase in their fruit and vegetable consumption.

"This finding highlights the importance of incentive design in health programs and differences in the timing or type of incentive can alter their effectiveness," Gardiner stated.

We essentially showed that incentives may be able to help people to 'jumpstart' behaviour changes, but that changes in key psychological factors help people maintain the behaviour when the incentives end, Gardiner noted.​

A new explanation of how gypsum forms may change the way we process this important building material, as well as allowing us to interpret past water availability on other planets such as Mars.