Results 81 to 90 of about 27,504 (316)

Length and sequence relaxation of copolymers under recombination reactions

, 2017
We describe the kinetics and thermodynamics of copolymers undergoing recombination reactions, which are important for prebiotic chemistry. We use two approaches: the first one, based on chemical rate equations and the mass-action law describes the ...
Blokhuis, Alex, Lacoste, David
core   +1 more source

Boron enrichment in Martian clay [PDF]

, 2013
We have detected a concentration of boron in martian clay far in excess of that in any previously reported extra-terrestrial object. This enrichment indicates that the chemistry necessary for the formation of ribose, a key component of RNA, could have ...
Freeland, Stephen J., Hallis, Lydia J., Maas, Stefan, Nagashima, Kazuhide, Stephenson, James D.   +4 more
core   +3 more sources

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

Heat Stress and Gut Microbiome Dynamics in Poultry: Interplay, Consequences, and Mitigation Strategies

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, A. I. Oni, O. A. Akosile, K. M. Oliyide, C. A. Ishola, M. O. Logunleko, O. A. Jimoh, C. P. Njoku, L. O. Fasasi, V. A. Uyanga   +9 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  

Carbon clusters formed from shocked benzene

Nature Communications, 2021
Shock-wave driven reactions of organic molecules may have played a key role in prebiotic chemistry, but their mechanisms are difficult to investigate.
D. M. Dattelbaum, E. B. Watkins, M. A. Firestone, R. C. Huber, R. L. Gustavsen, B. S. Ringstrand, J. D. Coe, D. Podlesak, A. E. Gleason, H. J. Lee, E. Galtier, R. L. Sandberg   +11 more
doaj   +1 more source

Engineering In Situ Catalytic Cleaning Membrane Via Prebiotic‐Chemistry‐Inspired Mineralization [PDF]

, 2023
Xiaobin Yang, Yajie Wen, Yangxue Li, Linlin Yan, Chuyang Y. Tang, Jun Ma, Seth B. Darling, Lu Shao   +7 more
openalex   +1 more source

Origin of Life

, 2012
The evolution of life has been a big enigma despite rapid advancements in the fields of biochemistry, astrobiology, and astrophysics in recent years.
A. Gibbons, Ashwini Kumar Lal, C. Bohler, C. Chyba, C. Huber, C.E. Manning, C.J. Salter, D. Penny, D. Warmflash, D.S. Heckman, D.S. Mckay, E.G. Roussel, F. Hoyle, F. Hoyle, F. Hoyle, G.F. Joyce, H.C. Arp, H.C. Urey, J. Li, J. Maddox, J. Postgate, J.B.S. Haldane, J.K. Fredrickson, J.V. Narlikar, J.W. Schopf, K. Kvenvolden, L.-H. Lin, L.E. Orgel, L.J. Richardson, M.T. Mondigan, N.C. Wickramsinghe, P. David, P. Ehrenfreund, P. Senapathy, R. Shapiro, R.D. Lorenz, S Arrhenius, S.J. Mojzsis, S.L. Miller, S.L. Miller, Stofan, T. Brock, T.D. Brack, W. Gilbert, W. Martin, Y.-J. Kuan, Y.-J. Ma   +46 more
core   +1 more source

Nutritional Content, Phytochemical Composition, and Physicochemical Properties of Different Quinoa (Chenopodium quinoa Willd.) Seed Varieties

Cereal Chemistry, EarlyView.
ABSTRACT Background and Objectives Quinoa (Chenopodium quinoa Willd.) is a pseudocereal with documented benefits for human health. The macronutrient composition and phytochemical content of the grain are known to vary depending on the variety and the growing location.
Vassilios Raikos, Shirley De Lima Sampaio, Helen E. Hayes, Gary J. Duncan, Donna Henderson, Nicholas J. Vaughan, Wendy R. Russell, Madalina Neacsu   +7 more
wiley   +1 more source

Construction of Phospholipid‐Like Vesicles by Aqueous Aminolysis of Acyl Thioesters With Diamino Acids

Chemistry – A European Journal, EarlyView.
Membrane‐forming phospholipids are produced in cells via enzymatic diacylation. Here, we show that direct aminolysis of acyl thioesters with diamino acids in aqueous environments enables the synthesis of diacylated amino acids (DAAAs), which spontaneously self‐assemble into robust phospholipid‐like vesicles across a broad range of pH and temperature ...
Federica A. Souto‐Trinei, Lucia Lomba‐Riego, Roberto J. Brea   +2 more
wiley   +1 more source