Results 211 to 220 of about 367,412 (259)
Some of the next articles are maybe not open access.
Chemical Evolution of Galaxies
Annual Review of Astronomy and Astrophysics, 1976The various nucleosynthetic processes needed to account for the formation of the different nuclear species have been described in the previous chapters as well as the location of these nucleosynthetic events. At the beginning of this monograph, the evolution of the matter which constitutes the celestial bodies such as planets, stars and galaxies was ...
Audouze, J., Tinsley, B.M.
openaire +2 more sources
Chemical evolution of photosynthesis
Origins of Life, 1976The principles of biological evolution of photosynthesis are established, but the ways of chemical evolution are unclear yet. The model systems will help to elucidate the problem. Every type of photosynthesis requires photoreceptor absorbing solar radiation. We studied as photoreceptors inorganic components of Earth crust, some coenzymes and porphyrins
openaire +2 more sources
2011 IEEE Congress of Evolutionary Computation (CEC), 2011
Chemical methods such as directed evolution and some forms of the SELEX procedure implement evolutionary algorithms directly in vitro. They have a wide range of applications in detecting and targeting diseases and potential applications in other areas as well [1].
null In Soo Oh +2 more
openaire +1 more source
Chemical methods such as directed evolution and some forms of the SELEX procedure implement evolutionary algorithms directly in vitro. They have a wide range of applications in detecting and targeting diseases and potential applications in other areas as well [1].
null In Soo Oh +2 more
openaire +1 more source
Early Years Educator, 2008
Thankfully, the vast majority of parents want the very best for their children. However, many will be unaware of the hidden dangers that many baby care products carry for even the youngest babies.
openaire +1 more source
Thankfully, the vast majority of parents want the very best for their children. However, many will be unaware of the hidden dangers that many baby care products carry for even the youngest babies.
openaire +1 more source
AIP Conference Proceedings, 2001
In this paper we review the current ideas about the formation of our Galaxy. In particular, the main ingredients necessary to build chemical evolution models (star formation, initial mass function and stellar yields) are described and discussed. A critical discussion about the main observational constraints available is also presented.
openaire +1 more source
In this paper we review the current ideas about the formation of our Galaxy. In particular, the main ingredients necessary to build chemical evolution models (star formation, initial mass function and stellar yields) are described and discussed. A critical discussion about the main observational constraints available is also presented.
openaire +1 more source
2013
Whereas 'natural evolution' is a well-studied biological theory, the notion of 'chemical evolution' remains ambiguous. At least two major meanings of 'chemical evolution' can be found. As used by cosmologists, planetologists or geochemists among others, chemical evolution - call it chemical evolution1 - refers to the changes in chemical composition of ...
openaire +2 more sources
Whereas 'natural evolution' is a well-studied biological theory, the notion of 'chemical evolution' remains ambiguous. At least two major meanings of 'chemical evolution' can be found. As used by cosmologists, planetologists or geochemists among others, chemical evolution - call it chemical evolution1 - refers to the changes in chemical composition of ...
openaire +2 more sources
Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
1987
The subject of Galactic chemical evolution is now in a very confused state, because of the freedom exercised by theoreticians in choice of assumptions and because of ambiguities in observational data. Nevertheless a few conclusions can be put forward at this time:- i) the “Simple Model” still has a considerable field of applicability, especially ...
openaire +1 more source
The subject of Galactic chemical evolution is now in a very confused state, because of the freedom exercised by theoreticians in choice of assumptions and because of ambiguities in observational data. Nevertheless a few conclusions can be put forward at this time:- i) the “Simple Model” still has a considerable field of applicability, especially ...
openaire +1 more source