Results 21 to 30 of about 7,622,829 (352)

The Enclosed Intestinal Microbiome: Semiochemical Signals from the Precambrian and Their Disruption by Heavy Metal Pollution

open access: yesLife, 2022
It is increasingly likely that many non-communicable diseases of humans and associated animals are due to the degradation of their intestinal microbiomes, a situation often referred to as dysbiosis.
David Smith   +2 more
doaj   +1 more source

Modelling the chemical evolution of the Milky Way [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2021
In this review, I will discuss the comparison between model results and observational data for the Milky Way, the predictive power of such models as well as their limits.
F. Matteucci
semanticscholar   +1 more source

Microbiome–Gut Dissociation: Investigating the Origins of Obesity

open access: yesGastrointestinal Disorders, 2021
The reduction of excessive weight remains a major public health challenge, with control currently limited to a calorie reduction strategy. Currently, attempts are being made at revisiting the fibre hypothesis based on the African studies of Denis Burkitt,
David Smith, Sohan Jheeta
doaj   +1 more source

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

open access: yesNature Communications, 2021
Construction of Z-scheme heterostructure is of great significance for realizing efficient photocatalytic water splitting. However, the conscious modulation of Z-scheme charge transfer is still a great challenge. Herein, interfacial Mo-S bond and internal
Xuehua Wang   +5 more
semanticscholar   +1 more source

Prevalent emergence of reciprocity among cross-feeding bacteria

open access: yesISME Communications, 2022
Explaining the de novo evolution of obligate cooperative cross-feeding interactions among bacteria is a fundamental problem. A critical step during this process is the emergence of reciprocity among two interaction partners, because a mutually beneficial
Samir Giri   +4 more
doaj   +1 more source

Chemical Evolution of Natural Product Structure

open access: yesJournal of the American Chemical Society, 2022
Natural products are the result of Nature’s exploration of biologically relevant chemical space through evolution and an invaluable source of bioactive small molecules for chemical biology and medicinal chemistry.
Michael Grigalunas   +2 more
semanticscholar   +1 more source

Mutually stabilizing interactions between proto-peptides and RNA

open access: yesNature Communications, 2020
Cooperative relationships are widespread among different classes of biopolymers and are predicted to have existed during emergence of life. This study shows that proto-peptides engage in mutually stabilizing interactions with RNA, providing support for ...
Moran Frenkel-Pinter   +9 more
doaj   +1 more source

The chemical evolution of IC 10 [PDF]

open access: yesAstronomy and Astrophysics, 2010
Dwarf irregular galaxies are relatively simple unevolved objects where it is easy to test models of galactic chemical evolution. We attempt to determine the star formation and gas accretion history of IC10, a local dwarf irregular for which abundance, gas, and mass determinations are available. We apply detailed chemical evolution models to predict the
Laura Magrini   +7 more
openaire   +5 more sources

Physiological characterization of a new thermotolerant yeast strain isolated during Brazilian ethanol production, and its application in high-temperature fermentation

open access: yesBiotechnology for Biofuels, 2020
Background The use of thermotolerant yeast strains can improve the efficiency of ethanol fermentation, allowing fermentation to occur at temperatures higher than 40 °C.
Cleiton D. Prado   +13 more
doaj   +1 more source

EVOLUTION OF THE STARS AND GAS IN GALAXIES. [PDF]

open access: yes, 2022
Essentially everything of astronomical interest is either part of a galaxy, or from a galaxy, or otherwise relevant to the origin or evolution of galaxies. Diverse examples are that the isotropic composition of meteorites provides clues to the history of
B. Tinsley
semanticscholar   +1 more source

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