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Science News Archive 2024 - Page 239


Page 239 of 484

Scientists map how deadly bacteria evolved to become epidemic

A recent study mapped the evolution of Pseudomonas aeruginosa, a deadly bacterium that causes devastating infections in people with underlying lung conditions. The researchers found that almost seven in ten infections are caused by just 21 genetic clones, which have rapidly evolved and spread globally over the last 200 years.

SourceUniversity of Cambridge·JournalScience·TypeData/statistical analysis·DateJul 4, 2024

Toward predictable universal genetic circuit design

Researchers aim to develop universal genetic circuits that can be transferred to various organisms, overcame host-specific gene expression machinery and metabolism limitations. Expanding regulatory toolbox and integrating computer-aided design tools will enable automatic design of universal circuits for non-model organisms.

SourceHigher Education Press·JournalQuantitative Biology·TypeExperimental study·DateJul 4, 2024

BDS High-precision service: current state, achievements, and future directions

The BeiDou system's high-precision services have achieved decimeter-level accuracy within minutes, enhancing global coverage and convergence time for autonomous driving, robotic navigation, and smart city infrastructures. A proposed LEO constellation can improve positioning accuracy to better than 5 cm within one minute, overcoming cur...

A New Blue: Mysterious origin of the ribbontail ray’s electric blue spots revealed

The study reveals that the electric blue spots of the bluespotted ribbontail ray are produced by unique skin cells with a stable 3D arrangement of nanoscale spheres containing reflecting nanocrystals. The team believes this colouration provides camouflage benefits to the stingrays, allowing them to blend with their surroundings.

SourceSociety for Experimental Biology·JournalAdvanced Optical Materials·TypeExperimental study·DateJul 4, 2024

Federal grid reforms alone are not enough to solve clean energy interconnection problem

The US federal grid reforms aim to improve the integration of renewable energy sources like wind and solar into the national electric grid. However, despite these efforts, fundamental issues remain unaddressed, including the need for centralized planning and better integration of interconnection and transmission policies.

Partially-hiding functional encryption for degree-2 polynomials with fine-grained access control

A new research proposes partially-hiding functional encryption schemes with fine-grained access control, enabling ciphertexts to be generated according to an access policy and secret keys associated with attributes and functions. This framework achieves semi-adaptive, simulation-based security under standard assumptions.

SourceHigher Education Press·JournalFrontiers of Computer Science·TypeExperimental study·DateJul 4, 2024

New AI approach optimizes antibody drugs

A new machine learning-based method uses 3D structure of protein backbone with large language models to predict molecular changes that lead to better antibody drugs. The approach resulted in a 25-fold improvement against a virus, outperforming traditional methods that rely on generating huge amounts of data about protein sequences.

SourceStanford University·JournalScience·DateJul 4, 2024

Getting bacteria into line

Physicists at Aalto University have developed a method to align bacterial cells using magnetic fields. By mixing bacteria into a liquid with millions of magnetic nanoparticles, the researchers can control the alignment of the rod-shaped bacteria in response to magnetic field strength. The findings offer insights into active matter phys...

SourceAalto University·JournalCommunications Physics·DateJul 4, 2024

Uncovering “Blockbuster T cells” in the gut wins NOSTER & Science Microbiome Prize

Researchers have identified a novel type of T cell that can recognize and respond to multiple bacterial strains in the gut. This breakthrough finding has significant implications for treating diseases such as cancer and inflammatory bowel disease. The discovery was made by Kazuki Nagashima, winner of the NOSTER & Science Microbiome Prize.

The molecular basis of how Pradimicin A binds to viral N-glycan, a potential SARS-CoV-2 entry inhibitor

Researchers discovered Pradimicin A's molecular basis for binding to viral N-glycan, showing promise as an anti-SARS-CoV-2 drug. The compound inhibits SARS-CoV-2 infectivity by interacting with branched oligomannose-containing glycans.

SourceInstitute for Glyco-core Research (iGCORE), Tokai National Higher Education and Research System·JournalBioorganic & Medicinal Chemistry·TypeExperimental study·DateJul 3, 2024

From daytime irrigation to selling surplus energy: solutions to optimize the use of solar energy in irrigation communities

Researchers propose two strategies to reduce energy loss and increase efficiency: adjusting irrigation schedules to daytime hours when solar energy is produced, and selling surplus energy. These approaches aim to create a sustainable irrigation model that combines environmental protection with economic profitability.

SourceUniversity of Córdoba·JournalRenewable Energy·TypeExperimental study·DateJul 3, 2024

A garnet-rich lunar mantle?

Researchers found sound velocities compatible with seismic profiles at depths of 740-1260 km, supporting garnet presence. The results have significant implications for the Moon's composition and formation, as well as its interior temperature and dynamo.

SourceEhime University·JournalEarth and Planetary Science Letters·DateJul 3, 2024

PolyU study reveals the mechanism of bio-inspired control of liquid flow, enlightening breakthroughs in fluid dynamics and nature-inspired materials technologies

Scientists studied Crassula muscosa and found its unique leaves pack tiny fins that manipulate the meniscus to direct liquid transport. An artificial mimic, CMIAs, mimics this effect, enabling real-time directional control of fluid flow in various technologies.

SourceThe Hong Kong Polytechnic University·JournalScience·TypeExperimental study·DateJul 3, 2024

3D covalent organic frameworks with zyg topology for photocatalytic synthesis of hydrogen peroxide

Researchers developed novel 3D covalent organic frameworks (COFs) with zyg topology, which facilitate light-induced charge separation and boost the photocatalytic synthesis of hydrogen peroxide. The synthesized COFs showed enhanced photocatalytic activity, with one example yielding a H2O2 synthesis rate of 3324 μmol g−1 h−1.

SourceScience China Press·JournalNational Science Review·DateJul 3, 2024

Wastewater is a viable medium for growing lettuce in hydroponic systems, study shows

Researchers found that combining aquaponic wastewaters with hydrothermal liquefaction aqueous phase (HTL-AP) solutions up to 8% can support plant growth without inhibiting germination. This alternative nutrient source has the potential to increase circularity in food production systems and reduce reliance on chemical fertilizers.