Lifeboat Foundation

Congratulations to Dr. Emmanuel Ríos López and her co-advisor Dr. X’opher Añorve and to our collaborators, Dr. Hector Javier Ibarra Medel, the Dr. Mabel Valerdi, the Dr. Gabriela Ileana Tudorica Iacobuta and the lng. Physics. Joaquin Alvira Enriquez. Three generations of summer students (VICI): Alvira-Enriquez, Valerdi and Iacobuta. Three generations of PhD students: Añorve, Ibarra-Medel and Rios-Lopez.

In this work we analyzed a sample of 101 brilliant galaxies using a two-dimensional decomposition of the shallow shine. This work serves to explore the formation of galaxies and their relationship with the supermassive holes black houses in their cores. We fixed some errors that the original sample came dragging.

We are grateful to Prof. Thomas Jarrett and Dr. Chien Peng for helping us along the generation of the work. We are standing on their shoulders, Prof. generated the Large Galaxy Atlas and Dr. Peng gave us GALFIT the best software for galaxy 2D surface brightness analysis.

Continue reading “Article Accepted in Monthly Notices of the Royal Astronomical Society” »

Deep below the ground, radioactive elements disintegrate water molecules, producing ingredients that can fuel subterranean life. This process, known as radiolysis, has sustained bacteria in isolated, water-filled cracks and rock pores on Earth for millions to billions of years. Now a study published in Astrobiology contends that radiolysis could have powered microbial life in the Martian subsurface.

Dust storms, cosmic rays and solar winds ravage the Red Planet’s surface. But belowground, some life might find refuge. “The environment with the best chance of habitability on Mars is the subsurface,” says Jesse Tarnas, a planetary scientist at NASA’s Jet Propulsion Laboratory and the new study’s lead author. Examining the Martian underground could help scientists learn whether life could have survived there—and the best subsurface samples available today are Martian meteorites that have crash-landed on Earth.

Tarnas and his colleagues evaluated the grain sizes, mineral makeup and radioactive element abundance in Martian meteorites and estimated the Martian crust’s porosity using satellite and rover data. They plugged these attributes into a computer model that simulated radiolysis to see how efficiently the process would have generated hydrogen gas and sulfates: chemical ingredients that can power the metabolism of underground bacteria. The researchers report that if water was present, radiolysis in the Martian subsurface could have sustained microbial communities for billions of years—and perhaps still could today.

When plants first ventured onto the land, evolving from freshwater-dwelling algae, more than 500 million years ago, they transformed the planet. By drawing carbon dioxide from the air, they cooled Earth, and by eroding rock surfaces they helped build the soil that now covers so much land.

These changes to the planet’s atmosphere and land surface paved the way for the evolution of the biosphere we know. Land plants make up around 80 percent of Earth’s biomass.

The pioneering plants were small and moss-like, and they had to overcome two big challenges to survive on land: avoiding drying out, and surviving the Sun’s harsh ultraviolet light.

I think I posted about the work in Texas, but here is more work.

Israeli and American researchers have discovered a nanobody cocktail that could neutralize coronavirus, including the Delta mutation.

Nanobodies are single domain antibodies derived from llamas — or other members of the camel family.

Continue reading “Israeli researchers say llama nanobodies could help stop COVID” »

NASA has selected two missions, dubbed DAVINCI+ and VERITAS, to study the “lost habitable” world of Venus. Each mission will receive approximately $500 million for development and both are expected to launch between 2,028 and 2030.

It had long been thought there was no life on Venus, due to its extremely high temperatures. But late last year, scientists studying the planet’s atmosphere announced the surprising (and somewhat controversial) discovery of phosphine. On Earth, this chemical is produced primarily by living organisms.

The news sparked renewed interest in Earth’s “twin,” prompting NASA to plan state-of-the-art missions to look more closely at the planetary environment of Venus—which could hint at life-bearing conditions.

“We showed that cholesterol is acting essentially as a signal in neurons that determines how much Aβ gets made—and thus it should be unsurprising that apoE, which carries the cholesterol to neurons, influences Alzheimer’s risk,” says study co-senior author Scott Hansen, PhD, an associate professor in the Department of Molecular Medicine at Scripps Research, Florida.

Summary: A new advanced imaging technique shows how cholesterol regulates the production of Alzheimer’s associated amyloid beta proteins in astrocytes.

Source: Scripps Research Institute

Continue reading “Brain Cholesterol Regulates Alzheimer’s Plaques” »