Results 91 to 100 of about 976,493 (346)

Mechanisms and kinetic assays of aminoacyl‐tRNA synthetases

FEBS Letters, EarlyView.
Accurate protein synthesis is crucial for life. The key players are aminoacyl‐tRNA synthetases (AARSs), which read the genetic code by pairing cognate amino acids and tRNAs. AARSs establish high amino acid selectivity by employing physicochemical limits in molecular recognition.
Igor Zivkovic, Morana Dulic, Ita Gruic‐Sovulj   +2 more
wiley   +1 more source

In Situ Formation of Star Clusters at z > 7 via Galactic Disk Fragmentation: Shedding Light on Ultracompact Clusters and Overmassive Black Holes Seen by JWST

The Astrophysical Journal Letters
We investigate the nature of star formation in gas-rich galaxies at z > 7 forming in a markedly overdense region, in the vicinity of a massive virialized halo already exceeding 10 ^12 M _⊙ , through the use of the very-high-resolution cosmological ...
Lucio Mayer, Floor van Donkelaar, Matteo Messa, Pedro R. Capelo, Angela Adamo   +4 more
doaj   +1 more source

The Reliability of [C II] as a Star Formation Rate Indicator

Open Astronomy, 2011
We present a calibration of the star formation rate (SFR) as a function of the [C II] 157.74 μm luminosity for a sample of 24 star-forming galaxies in the nearby universe.
De Looze Ilse, Baes Maarten, Fritz Jacopo, Bendo George J., Cortese Luca   +4 more
doaj   +1 more source

The star cluster - field star connection in nearby spiral galaxies I. Data analysis techniques and application to NGC 4395

, 2010
It is generally assumed that a large fraction of stars are initially born in clusters. However, a large fraction of these disrupt on short timescales and the stars end up belonging to the field. Understanding this process is of paramount importance if we
Annibali, Aparicio, Aparicio, Aparicio, Barker, Bastian, Bertelli, Bertin, Boutloukos, Brown, Buat, Cerviño, Cignoni, Cole, Dolphin, Dolphin, E. Silva-Villa, Edvardsson, Fall, Filippenko, Forbes, Gieles, Girardi, Girardi, Goddard, Grevesse, Harris, Harris, Harris, King, Lada, Lamers, Larsen, Larsen, Larsen, Larsen, Larsen, Larsen, Lejeune, Marigo, Mateo, Maíz Apellániz, Mora, Mora, Rejkuba, Roy, S. S. Larsen, Salpeter, Schlegel, Schulz, Sirianni, Tosi, Williams, Young   +53 more
core   +4 more sources

Dust and Star Formation [PDF]

Symposium - International Astronomical Union, 1973
The view that dust is essential to star formation is challenged on the ground that other interstellar constituents can provide more rapid cooling. From the evidence of stellar minimum masses it is suggested that self absorption of the radiation emitted by the coolant H2 is the dominant mechanism leading to the heating of a collapsing fragment.
openaire   +2 more sources

Biological and technical complexities in analyzing extracellular vesicle immune interactions in B‐cell malignancies

FEBS Letters, EarlyView.
Extracellular vesicles (EVs) mediate intercellular communication in tumor immune microenvironments. However, their role in B‐cell malignancies remains poorly defined, owing to biological complexity and technical challenges in EV isolation and analysis.
Daniel Bachurski, Michael Hallek
wiley   +1 more source

Origin of life: β‐sheet amyloid conformers as the primordial functional polymers on the early Earth and their role in the emergence of complex dynamic networks

FEBS Letters, EarlyView.
The amyloid world hypothesis of the origin‐of‐life posits that the first functional polymers on the early Earth were structurally stable cross‐β‐sheet‐based peptide amyloids capable of Darwinian‐like evolution. Peptide amyloids display self‐replication and information transfer, as well as catalytic, adaptive, and evolutive properties.
Carl Peter J. Maury
wiley   +1 more source

Quantifying the Drivers of Star Formation on Galactic Scales. I. The Small Magellanic Cloud

, 2003
We use the star formation history of the Small Magellanic Cloud (SMC) to place quantitative limits on the effect of tidal interactions and gas infall on the star formation and chemical enrichment history of the SMC. The coincident timing of two recent (<
Cole S., de Freitas Pacheco J. A., Dennis Zaritsky, Gardiner L. T., Gardiner L. T., Jason Harris, Kauffmann G., Staveley-Smith L., Vila-Costas M. B.   +8 more
core   +1 more source

The epithelial barrier theory proposes a comprehensive explanation for the origins of allergic and other chronic noncommunicable diseases

FEBS Letters, EarlyView.
Exposure to common noxious agents (1), including allergens, pollutants, and micro‐nanoplastics, can cause epithelial barrier damage (2) in our body's protective linings. This may trigger an immune response to our microbiome (3). The epithelial barrier theory explains how this process can lead to chronic noncommunicable diseases (4) affecting organs ...
Can Zeyneloglu, Huseyn Babayev, Ismail Ogulur, Sena Ardicli, Yagiz Pat, Duygu Yazici, Bingjie Zhao, Lihong Chang, Xiaoqing Liu, Paolo D'Avino, Manru Li, Ceren Biçer, Fatma Hacer Kurtoğlu Babayev, Raja Dhir, Kari C. Nadeau, Marie‐Charlotte Brüggen, Mubeccel Akdis, Cezmi A. Akdis   +17 more
wiley   +1 more source

Shock-induced star formation in a model of the Mice

, 2004
Star formation plays an important role in the fate of interacting galaxies. To date, most galactic simulations including star formation have used a density-dependent star formation rule designed to approximate a Schmidt law.
Aarseth, Alonso-Herrero, Barnes, Barnes, Barnes, Barnes, Burbidge, de Grijs, Dehnen, Elmegreen, Freeman, Gerin, Gerritsen, Gilbert, Gingold, Hernquist, Hernquist, Hibbard, Hibbard, Jog, Joshua E. Barnes, Katz, Kennicutt, Kormendy, Lucy, Mihos, Mihos, Mihos, Mihos, Mihos, Mihos, Mihos, Mirabel, Monaghan, Monaghan, Noguchi, Olson, Sanders, Schmidt, Schweizer, Scoville, Shu, Sotnikova, Spitzer, Springel, Stockton, Theys, Toomre, Toomre, Tremaine, van den Bergh, Vigroux, Vorontsov-Vel'yaminov, White, Whitmore, Xu, Yun, Zepf   +57 more
core   +1 more source