New Cool Science Articles

New Visible Light Photocatalyst Kills Bacteria, Even After Light Turned Off (via)

In the battle against bacteria, researchers at the University of Illinois have developed a powerful new weapon -- an enhanced photocatalytic disinfection process that uses visible light to destroy harmful bacteria and viruses, even in the dark.

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Based upon a new catalyst, the disinfection process can be used to purify drinking water, sanitize surgical instruments and remove unwanted fingerprints from delicate electrical and optical components.

"The new catalyst also has a unique catalytic memory effect that continues to kill deadly pathogens for up to 24 hours after the light is turned off," said Jian Ku Shang, a professor of materials science and engineering at the U. of I.

Fish Oil Given Intravenously to Patients in Intensive Care Has Many Benefits, Study Finds (via)

A randomised controlled trial of fish oil given intravenously to patients in intensive care has found that it improves gas exchange, reduces inflammatory chemicals and results in a shorter length of hospital stay.

Researchers writing in BioMed Central's open access journal Critical Care investigated the effects of including fish oil in the normal nutrient solution for patients with sepsis, finding a significant series of benefits.

Philip Calder, from the University of Southampton, UK, worked with a team of researchers to carry out the study in 23 patients with systemic inflammatory response syndrome or sepsis in the Hospital Padre Américo, Portugal. He said, "Recently there has been increased interest in the fat and oil component of vein-delivered nutrition, with the realization that it not only supplies energy and essential building blocks, but may also provide bioactive fatty acids. Traditional solutions use soybean oil, which does not contain the omega-3 fatty acids contained in fish oil that act to reduce inflammatory responses. In fact, soybean oil is rich in omega-6 acids that may actually promote inflammation in an excessive or unbalanced supply."

Side effects may include dipsomania, hydrophilia, and hyper-retroamnesia.

Zambian Study Finds Longer Breastfeeding Best for HIV-Infected Mothers (via)

The researchers' initial hypothesis, which proved to be incorrect, suggested that by 4 months of age, children would have passed the critical developmental point when breastfeeding is essential to their survival. However, stopping breastfeeding at 4 months, compared to usual breastfeeding as the child reaches 6 months to 24 months or older, did not decrease mortality or play a significant role in protecting the child from HIV transmission.

These findings were consistent with those for mothers not infected with HIV; longer breastfeeding is necessary to protect children against potentially fatal infectious diseases, especially those prevalent in low-resource settings. To prevent postnatal HIV transmission, however, mothers with HIV should be on antiretroviral drugs.

The breasts knows the bests.