GoKawiil
Tech News
Researchers from Cornell University and collaborating institutions have fabricated a silicon-doped alpha-phase aluminum gallium oxide semiconductor with a bandgap of approximately 7 electron volts. The work, supported by multiple US funding agencies including AFOSR, AFRL and NSF, demonstrates controlled doping of this ultra-wide-bandgap material system.
Researchers used nematode (C. elegans) extract containing a FLAG-tagged PRP19 protein to study how the intron lariat spliceosome (ILS) complex breaks apart once its job is done. By comparing protein pulldowns with and without ATP, they identified which factors are released from the spliceosome specifically when ATP is present, pointing to an ATP-dependent disassembly step. Mass spectrometry and statistical analysis were used to pinpoint proteins significantly depleted under ATP treatment.
Researchers analyzed bronchial tissue from a long-running UCLH bronchoscopy surveillance study tracking patients with preinvasive lung lesions, alongside several related UK cohorts, to examine immune changes as lesions progress toward invasive cancer. The work focused on identifying a regulatory T cell signaling axis present in preinvasive tissue that may influence whether lesions advance to high-grade disease or carcinoma, combining human tissue analysis with mouse model experiments.
Researchers studying the Tsimane people of Bolivia, working with the Gran Consejo Tsimane governing body and local communities, analyzed fecal samples to trace gut microbial species that appear to have migrated globally with early humans but are now disappearing in industrialized societies. The research, approved by multiple US and Bolivian institutional review boards, also provided participants with parasite screening and treatment as a direct health benefit, alongside decades of broader health and education support from the binational Tsimane Health and Life History Project.
Scientists reported experimental evidence of 'critical topology'—topological features existing at the boundary between phases rather than within stable phases—using engineered phononic crystals. They characterized gapless topological states through entanglement spectrum and entanglement wavefunction analysis in both one- and two-dimensional systems, and directly imaged topological boundary modes within a gapless bulk continuum.
Researchers using multiple genetically engineered mouse lines found that alveolar type 2 stem cells, normally responsible for regenerating lung air sacs, can transdifferentiate into cells that regenerate the bronchiolar airways after injury. The team used lineage-tracing and gene-deletion techniques in mice to track this cell-fate switch and identify the Notch signaling pathway as a key regulator of the process.
Researchers examined vibrational spectra from eight water-filled carbon nanotubes alongside dozens of empty ones, finding distinct spectral signatures for 'non-H-bonded' and 'bulk-water-like' states of confined water. Most empty nanotubes showed no peaks in the relevant energy range, though a few displayed faint or contamination-related signals, and cryogenic measurements confirmed the key spectra on the same sample.
Scientists working on a nuclear clock based on the thorium-229 isotope described how they processed fluorescence signal data to measure the transition's frequency accurately. Their method corrects for leftover excited-state population from prior measurements and for fluctuations in the vacuum-ultraviolet excitation power used to probe the nuclear transition.
Researchers used cryo-electron microscopy and biochemical assays, including ATP binding and hydrolysis measurements, to characterize the LPS transport (Lpt) machinery in bacteria, focusing on proteins LptC and LptA. The team engineered bacterial strains lacking these genes and complemented them with a fusion protein to verify how the transport complex assembles and functions across the cell envelope.
Researchers describe a laser interrogation system built around a commercial frequency-quadrupled diode laser that reaches roughly 500 mW at 296.8 nm, used to probe a thorium-229-doped crystal sample. The setup combines offset-frequency phase locking and Pound-Drever-Hall stabilization to a reference cavity, with a photomultiplier tube detecting fluorescence signals inside a vacuum chamber, and the clock laser's frequency also compared against an optical frequency comb.
Researchers used cryo-electron microscopy to directly visualize how magnesium ions move within flexible RNA structures at near-atomic resolution, something previous structural methods could not capture. The work shows that RNA catalytic activity arises from shifting ensembles of structures rather than a single fixed conformation, with Mg2+ ions playing a dynamic role throughout.
Researchers at GSI Darmstadt synthesized the superheavy isotope 259Sg and formed a volatile hexacarbonyl compound, Sg(CO)6, comparing its behavior to tungsten carbonyl compounds made from short-lived isotopes. By tracking how these complexes moved through a temperature-gradient chromatography column, the team measured bonding properties of seaborgium directly for only the second time ever.