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Aug 1, 2023

Oppenheimer’s forgotten astrophysics research explains why black holes exist

Posted by in categories: cosmology, quantum physics

Even with the quantum rules governing the Universe, there are limits to what matter can withstand. Beyond that, black holes are unavoidable.

Aug 1, 2023

A planet’s atmosphere is blasted away by a star and Hubble captures it

Posted by in category: space

Astronomers used the Hubble Space Telescope to determine that a nearby exoplanet is losing its atmosphere due to interactions with its star.

Aug 1, 2023

Cosmic Question Mark Spotted in Deep Space Suggests the Universe Is Stumped

Posted by in category: space

Webb is casting the universe in a new light, but the space telescope’s discovery of a cosmological question mark has us scratching our heads.

Aug 1, 2023

Innovative Liquid Cushioning Technology Promises Revolution in Safety Gear

Posted by in categories: biotech/medical, engineering, neuroscience, wearables

New breakthrough in material design will help football players, car occupants, and hospital patients.

A significant breakthrough in the field of protective gear has been made with the discovery that football players were unknowingly acquiring permanent brain damage from repeated head impacts throughout their professional careers. This realization triggered an urgent search for better head protection solutions. Among these innovations is nanofoam, a material found inside football helmets.

Thanks to mechanical and aerospace engineering associate professor Baoxing Xu at the University of Virginia and his research team, nanofoam just received a big upgrade and protective sports equipment could, too. This newly invented design integrates nanofoam with “non-wetting ionized liquid,” a form of water that Xu and his research team now know blends perfectly with nanofoam to create a liquid cushion. This versatile and responsive material will give better protection to athletes and is promising for use in protecting car occupants and aiding hospital patients using wearable medical devices.

Aug 1, 2023

Condition Monitoring Sensors

Posted by in category: robotics/AI

Industrial condition monitoring sensors collect data that facilitates intelligent decisions via machine learning or AI to predict machine failures and increase productivity.

Aug 1, 2023

Electrified cement could turn houses and roads into nearly limitless batteries

Posted by in categories: energy, materials

Energy storing building materials could make on-demand power from renewables affordable worldwide.

Aug 1, 2023

Bacterial–fungal interactions promote parallel evolution of global transcriptional regulators in a widespread Staphylococcus species

Posted by in categories: biotech/medical, evolution, food

Experimental studies of microbial evolution have largely focused on monocultures of model organisms, but most microbes live in communities where interactions with other species may impact rates and modes of evolution. Using the cheese rind model microbial community, we determined how species interactions shape the evolution of the widespread food-and animal-associated bacterium Staphylococcus xylosus. We evolved S. xylosus for 450 generations alone or in co-culture with one of three microbes: the yeast Debaryomyces hansenii, the bacterium Brevibacterium aurantiacum, and the mold Penicillium solitum. We used the frequency of colony morphology mutants (pigment and colony texture phenotypes) and whole-genome sequencing of isolates to quantify phenotypic and genomic evolution. The yeast D. hansenii strongly promoted diversification of S. xylosus.

Aug 1, 2023

Fullerene-pillared porous graphene with high water adsorption capacity

Posted by in categories: materials, particle physics

Separation processes are essential in the purification and concentration of a target molecule during water purification, removal of pollutants, and heat pumping, accounting for 10–15% of global energy consumption. To make the separation processes more energy efficient, improvement in the design of porous materials is necessary. This could drastically reduce energy costs by about 40–70%. The primary approach to improving the separation performance is to precisely control the pore structure.

In this regard, porous carbon materials offer a distinct advantage as they are composed of only one type of atom and have been well-used for separation processes. They have large pore volumes and surface areas, providing in gas separation, , and storage. However, pore structures generally have high heterogeneity with low designability. This poses various challenges, limiting the applicability of carbon materials in separation and storage.

Now, a team of researchers from Japan, led by Associate Professor Tomonori Ohba from Chiba University and including master’s students, Mr. Kai Haraguchi and Mr. Sogo Iwakami, has fabricated fullerene-pillared porous (FPPG)—a carbon composite comprising nanocarbons—using a bottom-up approach with highly designable and controllable pore structures.

Aug 1, 2023

AI Agents With ‘Multiple Selves’ Learn to Adapt Quickly in a Changing World

Posted by in categories: neuroscience, robotics/AI

So why not break the AI apart?

In a new study published in PNAS, the team took a page from cognitive neuroscience and built a modular AI agent.

The idea is seemingly simple. Rather than a monolithic AI—a single network that encompasses the entire “self”—the team constructed a modular agent, each part with its own “motivation” and goals but commanding a single “body.” Like a democratic society, the AI system argues within itself to decide on the best response, where the action most likely to yield the largest winning outcome guides its next step.

Aug 1, 2023

Using chaotic inputs to improve microcomb-based parallel ranging

Posted by in category: computing

The transition to chaos is ubiquitous in nonlinear systems. Continuous-wave-driven photonic-chip-based Kerr microresonators exhibit spatiotemporal chaos, also known as chaotic modulation instability.

For more than fifteen years such modulation instability states have been considered impractical for applications compared to their coherent-light-state counterparts, such as soliton states. The latter have been the centerpiece for numerous high-profile application demonstrations, from long-range to photonic computing.

Now, researchers from the group of Tobias Kippenberg at EPFL have found a new way to harness the unique features of chaotic frequency combs to implement unambiguous and interference-immune massively parallel ranging by utilizing the intrinsic random amplitude and phase modulation of the chaotic comb lines.