Results 31 to 40 of about 1,651,742 (317)

Some Terpenes and Related Derivatives Synthesized in Cold Plasma Systems

Molecules, 1997
The synthesis of bicyclo-[2.2.1]-heptane and bicyclo-[7.2.0]-undec-4-ene derivatives under cold plasma conditions are reported. The reaction systems involve gaseous mixtures at an interface with ice surfaces.
Cristofor I. Simionescu, Gheorghe Cobileac, Constantin Romanescu, Sorin Manolache   +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

Chemical Evolution of M31

, 2014
We review chemical evolution models developed for M31 as well as the abundance determinations available for this galaxy. Then we present a recent chemical evolution model for M31 including radial gas flows and galactic fountains along the disk, as well ...
Matteucci, F., Spitoni, E.
core   +1 more source

Evolution before genes

Biology Direct, 2012
Background Our current understanding of evolution is so tightly linked to template-dependent replication of DNA and RNA molecules that the old idea from Oparin of a self-reproducing 'garbage bag' ('coacervate') of chemicals that predated fully-fledged ...
Vasas Vera, Fernando Chrisantha, Santos Mauro, Kauffman Stuart, Szathmáry Eörs   +4 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 of star clusters

, 2009
I discuss the chemical evolution of star clusters, with emphasis on old globular clusters, in relation to their formation histories. Globular clusters clearly formed in a complex fashion, under markedly different conditions from any younger clusters ...
Abia C., Charbonnel C., Dubath P., Mackey A. D., Romano D., van Loon J. Th., Yi S. K.   +6 more
core   +1 more source

Chemical evolution of low mass disc galaxies [PDF]

, 1999
We show that the multiphase chemical evolution model reproduces the correlations obtained along the spiral sequence, dwarf galaxies included. However the apparent spatial chemical uniformity observed in some irregular galaxies cannot be reproduced with ...
Molla, Mercedes, Roy, Jean-Rene
core   +2 more sources

JINA-NuGrid Galactic Chemical Evolution Pipeline

, 2016
Galactic chemical evolution is a topic that involves nuclear physics, stellar evolution, galaxy evolution, observation, and cosmology. Continuous communication and feedback between these fields is a key component in improving our understanding of how ...
Côté, Benoit, Fryer, Chris L., Herwig, Falk, Jones, Samuel, O'Shea, Brian W., Pignatari, Marco, Ritter, Christian, Silvia, Devin   +7 more
core   +1 more source

Cosmological implications of dwarf spheroidal chemical evolution [PDF]

, 2006
The chemical properties of dwarf spheroidals in the local group are shown to be inconsistent with star formation being truncated after the reionization epoch (z~8).
Brad K. Gibson, Dehnen W., Kroupa P., Maria Lugaro, Matteucci F., Roberto Gallino, Schaller G., Thielemann F.-K., Tian K. P., Yeshe Fenner   +9 more
core   +1 more source

Understanding the various evolutionary stages of the low-mass star-formation process by SO and SO2

Frontiers in Astronomy and Space Sciences
SO and SO2 are two potential candidates to trace the different evolutionary phases of the low-mass star-formation process. Here, we report observations of SO and SO2 along with their isotopologues, 34SO and 34SO2, respectively, in four distinct phases of
Rana Ghosh, Rana Ghosh, Ankan Das, Ankan Das, Prasanta Gorai, Prasanta Gorai, Suman Kumar Mondal, Kenji Furuya, Kenji Furuya, Kei E. I. Tanaka, Takashi Shimonishi   +10 more
doaj   +1 more source