Results 51 to 60 of about 6,446,269 (330)

CHEMICAL EVOLUTION IN VeLLOs [PDF]

Journal of The Korean Astronomical Society, 2007
A new type of object called "Very Low Luminosity Objects (VeLLOs)" has been discovered by the Spitzer Space Telescope. VeLLOs might be substellar objects forming by accretion. However, some VeLLOs are associated with strong outflows, indicating the previous existence of massive accretion.
openaire   +2 more sources

Feeding Our Microbiota: Stimulation of the Immune/Semiochemical System and the Potential Amelioration of Non-Communicable Diseases

Life, 2022
Non-communicable diseases are those conditions to which causative infectious agents cannot readily be assigned. It is increasingly likely that at least some of these conditions are due to the breakdown of the previously mutualistic intestinal microbiota ...
David Smith, Sohan Jheeta, Hannya V. Fuentes, Miryam Palacios-Pérez   +3 more
doaj   +1 more source

Microbiome–Gut Dissociation in the Neonate: Autism-Related Developmental Brain Disease and the Origin of the Placebo Effect

Gastrointestinal Disorders, 2022
While the importance of the intestinal microbiome has been realised for a number of years, the significance of the phrase microbiota–gut–brain axis is only just beginning to be fully appreciated.
David Smith, Sohan Jheeta, Hannya V. Fuentes, Bernadette Street, Miryam Palacios-Pérez   +4 more
doaj   +1 more source

A plausible pathway to prebiotic peptides via amino acid amides on the primordial Earth

Earth and Planetary Physics
The prebiotic synthesis of peptides prior to ribosome-catalyzed processes remains an enigma. The synthesis of abiotic peptides from amino acids (AAs) is primarily constrained by high activation energies and unfavorable thermodynamics, necessitating the ...
DingWei Gan, XiangMin Lei, RenWu Zhou, SongSen Fu, Jing Sun, RuSen Zhou, Kostya (Ken) Ostrikov, YuFen Zhao, JianXi Ying   +8 more
doaj   +1 more source

Microbiome–Gut Dissociation in the Neonate: Obesity and Coeliac Disease as Examples of Microbiome Function Deficiency Disorder

Gastrointestinal Disorders, 2022
The purpose of this article is to provide a direction for translational research based on an analysis of the nature of complex, immune-related conditions such as obesity and coeliac disease.
David Smith, Miryam Palacios-Pérez, Sohan Jheeta   +2 more
doaj   +1 more source

Chemical Evolution Tomorrow [PDF]

, 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

Origin of the Reductive Tricarboxylic Acid (rTCA) Cycle-Type CO2 Fixation: A Perspective

Life, 2017
The reductive tricarboxylic acid (rTCA) cycle is among the most plausible candidates for the first autotrophic metabolism in the earliest life. Extant enzymes fixing CO2 in this cycle contain cofactors at the catalytic centers, but it is unlikely that ...
Norio Kitadai, Masafumi Kameya, Kosuke Fujishima   +2 more
doaj   +1 more source

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

Life, 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, Miryam Palacios-Pérez, Sohan Jheeta   +2 more
doaj   +1 more source

Setting the volatile composition of (exo)planet-building material. Does chemical evolution in disk midplanes matter? [PDF]

, 2016
[Abridged] Chemical evolution in the protoplanetary disk midplane can modify the composition of ices and gases. We have investigated if and how chemical evolution affects the abundances and distributions of key volatile species in the midplane of a ...
C. Eistrup, C. Walsh, E. Dishoeck
semanticscholar   +1 more source

EURAD State-of-the-Art Report: ACED assessment of the chemical evolution at the disposal cell scale—part I—processes at interfaces and evolution at disposal cell scale

Frontiers in Nuclear Engineering
Within the framework of the European Joint Programme on Radioactive Waste Management, the work package ACED–Assessment of chemical evolution of intermediate level (ILW) and high level (HLW) waste at disposal cell scale–used combined experimental and ...
Erika Neeft, Guido Deissmann, Diederik Jacques   +2 more
doaj   +1 more source