Lifeboat Foundation

The first international case of listeriosis linked to an outbreak in Spain that has sickened almost 200 people and killed two is being investigated by British public health officials.

The outbreak has been traced to contaminated chilled pork products under the brand “La Mechá” made by Magrudis, based in Seville. The potential infection is in a man from England who ate the product in Seville in mid-August. He was treated at a hospital in France before returning to the United Kingdom.

A Public Health England spokeswoman told Food Safety News the agency does not disclose patient details so she was not able to provide information on the age of the man or where in England he lives.

A new generation of swarming robots which can independently learn and evolve new behaviors in the wild is one step closer, thanks to research from the University of Bristol and the University of the West of England (UWE).

The team used artificial evolution to enable the robots to automatically learn swarm behaviors which are understandable to humans. This new advance published today in Advanced Intelligent Systems, could create new robotic possibilities for environmental monitoring, disaster recovery, infrastructure maintenance, logistics and agriculture.

Until now, artificial evolution has typically been run on a computer which is external to the swarm, with the best strategy then copied to the robots. However, this approach is limiting as it requires external infrastructure and a laboratory setting.

The theory that oxygen and water provides food and nourishment without guidance.

Look for the word “shareholder” at the very bottom.

Mammals evolved in the face of fluctuating food availability. How the immune system adapts to…

You are what you eat—right down to the microbiome living in your gut. Diet can affect which microbes are in the intestinal tract, and research has shown that harmful gut microbiome changes can lead to illnesses such as heart disease, obesity and cancer. Today, scientists will report the development of molecules that can change, or remodel, unhealthful gut microbiomes in mice into more healthful ones. The research could also someday be applied to other conditions related to diet.

The researchers will present their results at the American Chemical Society (ACS) Fall 2019 National Meeting & Exposition.

“The gut microbiome contains hundreds of different species of bacteria and is where the largest concentration of bacteria living in us resides,” says M. Reza Ghadiri, Ph.D., leader of the study. “If we all ate a healthy diet, exercised and didn’t age, we wouldn’t have problems with our gut microbiome and many diseases. But, that’s not how all people live. Current methods aimed at improving the makeup of gut microbiomes have involved prebiotics, probiotics or drug therapies. Our goal was to take a totally new approach—to remodel the microbiome.”

The Centers for Disease Control and Prevention (CDC) warned Thursday of a drug-resistant strain of salmonella newport linked to the overuse of antibiotics in cattle farming.

Yes he really said this, yet he also said he wanted to use the Amazon for logging and agriculture. Personally I believe people who want to use the Amazon for commercial use are the biggest beneficiaries from such destruction, but I’m no expert.

The Brazilian president, Jair Bolsonaro, has accused environmental groups of setting fires in the Amazon as he tries to deflect growing international criticism of his failure to protect the world’s biggest rainforest.

A surge of fires in several Amazonian states this month followed reports that farmers were feeling emboldened to clear land for crop fields and cattle ranches because the new Brazilian government was keen to open up the region to economic activity.

Continue reading “Jair Bolsonaro claims NGOs behind Amazon forest fire surge – but provides no evidence” »

Self-assembled materials are attractive for next-generation materials, but their potential to assemble at the nanoscale and form nanostructures (cylinders, lamellae etc.) remains challenging. In a recent report, Xundu Feng and colleagues at the interdisciplinary departments of chemical and environmental engineering, biomolecular engineering, chemistry and the center for advanced low-dimension materials in the U.S., France, Japan and China, proposed and demonstrated a new approach to prevent the existing challenges. In the study, they explored size-selective transport in the water-continuous medium of a nanostructured polymer template formed using a self-assembled lyotropic H₁ (hexagonal cylindrical shaped) mesophase (a state of matter between liquid and solid). They optimized the mesophase composition to facilitate high-fidelity retention of the H₁ structure on photoinduced crosslinking.

The resulting nanostructured polymer material was mechanically robust with internally and externally crosslinked nanofibrils surrounded by a continuous aqueous medium. The research team fabricated a membrane with size selectivity at the 1 to 2 nm length scale and water permeabilities of ~10 liters m⁻² hour⁻¹ bar⁻¹ μm. The membranes displayed excellent anti-microbial properties for practical use. The results are now published on Science Advances and represent a breakthrough for the potential use of self-assembled membrane-based nanofiltration in practical applications of water purification.

Membrane separation for filtration is widely used in diverse technical applications, including seawater desalination, gas separation, food processing, fuel cells and the emerging fields of sustainable power generation and distillation. During nanofiltration, dissolved or suspended solutes ranging from 1 to 10 nm in size can be removed. New nanofiltration membranes are of particular interest for low-cost treatment of wastewaters to remove organic contaminants including pesticides and metabolites of pharmaceutical drugs. State-of-the-art membranes presently suffer from a trade-off between permeability and selectivity where increased permeability can result in decreased selectivity and vice-versa. Since the trade-off originated from the intrinsic structural limits of conventional membranes, materials scientists have incorporated self-assembled materials as an attractive solution to realize highly selective separation without compromising permeability.

Cold storage for agricultural biodiversity.