Results 91 to 100 of about 1,043,960 (288)
On the formation of glycolaldehyde in dense molecular cores [PDF]
, 2012 Glycolaldehyde is a simple monosaccharide sugar linked to prebiotic chemistry. Recently, it was detected in a molecular core in the star-forming region G31.41+0.31 at a reasonably high abundance.
Beltrán +32 more
core +2 more sources
The Surface UV Environment on Planets Orbiting M Dwarfs: Implications for Prebiotic Chemistry and the Need for Experimental Follow-up [PDF]
, 2017 Potentially habitable planets orbiting M dwarfs are of intense astrobiological interest because they are the only rocky worlds accessible to biosignature search over the next 10+ years because of a confluence of observational effects.
S. Ranjan, R. Wordsworth, D. Sasselov
semanticscholar +1 more source
Prebiotic chemistry: a new modus operandi [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2011 A variety of macromolecules and small molecules—(oligo)nucleotides, proteins, lipids and metabolites—are collectively considered essential to early life. However, previous schemes for the origin of life—e.g. the ‘RNA world’ hypothesis—have tended to assume the initial emergence of life based on one such molecular class followed by the sequential ...
Matthew W, Powner, John D, Sutherland
openaire +2 more sources
Animal Research and One Health, EarlyView.The bioactive substances we extracted from Lycium barbarum residue (LBR) have a typical polysaccharide structure. When 1.80% LBR was used to replace maize in the diet, the average daily gain of rossbred Simmental was significantly increased, and anti‐inflammatory ability was improved. In addition, LBR improved the fecal microbial composition, increased
Kun Cai +10 more
wiley +1 more source
The origin of life and the prebiotic chemistry
Semina: Ciências Exatas e Tecnológicas, 2004 In the present paper, a historical view from Oparin-Haldane hypothesis to prebiotic chemistry is discussed. Several aspects of prebiotic chemistry are also discussed such as: environments where the abiotic synthesis of biomolecules and biopolymers could
Dimas Augusto Morozin Zaia
doaj
Molecules, 2020 The gas-phase formation and spectroscopic characteristics of ethanimine have been re-investigated as a paradigmatic case illustrating the accuracy of state-of-the-art quantum-chemical (QC) methodologies in the field of astrochemistry.
Carmen Baiano +4 more
doaj +1 more source
Antioxidant activity of films inspired by prebiotic chemistry
Materials letters (General ed.), 2020 Conformal films obtained through polymerization of aminomalononitrile in solution at pH = 8.6 display an irreversible electrochemical oxidation current and a thickness/ morphology dependant antioxidant activity as measured by the quenching of 2,2 ...
V. Ball
semanticscholar +1 more source
Animal Research and One Health, EarlyView.Heat stress disrupts gut microbial balance in poultry, impairing nutrient absorption and immunity. This review outlines the interplay between thermal stress and microbiome dynamics and discusses integrative mitigation strategies, probiotics, phytogenics, cooling systems, and genetic adaptation to enhance poultry resilience.
O. E. Oke +9 more
wiley +1 more source
Autism Research, EarlyView.ABSTRACT The etiopathogenesis of Autism Spectrum Disorder (ASD) encompasses complex interactions between genetic and environmental risk factors. The high prevalence of gastrointestinal disorders in autistic individuals has propelled a growing interest in the possible involvement of gut dysbiosis in ASD pathogenesis.
Laura Sandoni +6 more
wiley +1 more source
Frontiers in Astronomy and Space SciencesThe origins of life are a fascinating topic and a captivating scientific challenge that involve numerous hypotheses. Computational quantum techniques have been growing, modernizing, and complementing experimental efforts in the field. In this mini review,
Ana Luiza Quilici +3 more
doaj +1 more source