Results 11 to 20 of about 356,019 (243)

The methylome of the model arbuscular mycorrhizal fungus, Rhizophagus irregularis, shares characteristics with early diverging fungi and Dikarya

open access: yesCommunications Biology, 2021
Anurag Chaturvedi et al. use long-read PacBio sequencing and LC-MS to profile 5mC and 6mA DNA methylation in the model arbuscular mycorrhizal fungus, Rhizophagus irregularis. Their results suggest that R.
Anurag Chaturvedi   +8 more
doaj   +1 more source

EMPRESS. XI. SDSS and JWST Search for Local and z ∼4–5 Extremely Metal-poor Galaxies (EMPGs): Clustering and Chemical Properties of Local EMPGs

open access: yesThe Astrophysical Journal, 2023
We search for local extremely metal-poor galaxies (EMPGs), selecting photometric candidates by broadband color excess and machine-learning techniques with the SDSS photometric data.
Moka Nishigaki   +18 more
doaj   +1 more source

Stellar Chemical Evolution [PDF]

open access: yesSymposium - International Astronomical Union, 1997
One of the major achievements of astrophysics has been the demonstration that most of the chemical elements have been synthesized in stars: nucleosynthesis calculations of homogeneous and inhomogeneous big bang cosmologies show that, in comparison with the most metal-poor stars currently known, essentially no elements heavier than B existed at the era ...
openaire   +1 more source

Chemical evolution

open access: yes, 2008
In this series of lectures we first describe the basic ingredients of galactic chemical evolution and discuss both analytical and numerical models. Then we compare model results for the Milky Way, Dwarf Irregulars, Quasars and the Intra-Cluster- Medium with abundances derived from emission lines.
Horst Rauchfuss, Terence N. Mitchell
openaire   +3 more sources

Survival of the Sawfly Athalia rosae Upon Infection by an Entomopathogenic Fungus and in Relation to Clerodanoid Uptake

open access: yesFrontiers in Physiology, 2021
Larvae of the turnip sawfly Athalia rosae are a pest of Brassicacae plants, as their feeding can cause defoliation of various crops of economic importance.
Caroline Zanchi   +5 more
doaj   +1 more source

Enzymatic synthesis and nanopore sequencing of 12-letter supernumerary DNA

open access: yesNature Communications, 2023
The 4-letter DNA alphabet (A, T, G, C) as found in Nature is an elegant, yet non-exhaustive solution to the problem of storage, transfer, and evolution of biological information.
Hinako Kawabe   +11 more
doaj   +1 more source

Surface force analysis of glycine adsorption on different crystal surfaces of titanium dioxide (TiO2)

open access: yesNano Convergence, 2017
Surface force analysis with atomic force microscope (AFM) in which a single amino acid residue was mounted on the tip apex of AFM probe was carried out for the first time at the molecular level on titanium dioxide (TiO2) as a representative mineral ...
Narangerel Ganbaatar   +3 more
doaj   +1 more source

Linked cycles of oxidative decarboxylation of glyoxylate as protometabolic analogs of the citric acid cycle

open access: yesNature Communications, 2018
The citric acid cycle (TCA) is a fundamental metabolic pathway to release stored energy in living organisms. Here, the authors report two linked cycles of reactions that each oxidize glyoxylate into CO2 and generate intermediates shared with the modern ...
Greg Springsteen   +4 more
doaj   +1 more source

The Oleaginous Yeast Metschnikowia pulcherrima Displays Killer Activity against Avian-Derived Pathogenic Bacteria

open access: yesBiology, 2021
Metschnikowia pulcherrima is a non-conventional yeast with potential to be used in biotechnological processes, especially those involving low-cost feedstock exploitation and biocontrol applications.
Robert H. Hicks   +4 more
doaj   +1 more source

Chemical Evolution Tomorrow [PDF]

open access: yes, 2002
The solar system is just one sample, though of course the most thoroughly studied sample, of cosmic chemistry. Some perspective on it can be gained from an overview of the chemical evolution of the Galaxy and Universe, how our knowledge of this evolution has developed, and what problems remain to be solved.
openaire   +2 more sources

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