Results 61 to 70 of about 93,502 (270)

Symmetry and Minimum Principle at the Basis of the Genetic Code

open access: yes, 2017
The importance of the notion of symmetry in physics is well established: could it also be the case for the genetic code? In this spirit, a model for the Genetic Code based on continuous symmetries and entitled the "Crystal Basis Model" has been proposed ...
Sciarrino, A., Sorba, P.
core   +1 more source

Tendances climatiques passées, modélisation, perceptions et adaptations locales au bénin

open access: yes, 2011
Past climate trends: modeling, local perceptions and adaptation in Benin The present study has examined the evolution trend of climatic patterns between 1960 and 2008 of the 3 climatic zones of Benin and the local perceptions on the climate changes as ...
Césaire Paul Gnanglè   +5 more
semanticscholar   +1 more source

Artificial Neural Networks for Defining the Operational Parameters of Sand Filters for Irrigation

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT The difficulty in defining the working configuration during the operation of sand filters arises from the complexity of the relationships among the variables in the filtration and backwashing processes. The objective was to use artificial neural networks to model the pressure loss and removal efficiency of filtration in a commercial sand ...
Mádilo Lages Vieira Passos   +4 more
wiley   +1 more source

Towards Water, Food and Energy Security: The Global Challenges and Possible Solutions for a Holistic Vision of Sustainability

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT This invited paper gives an overview of the challenges the world is facing and offers a possible solution for water and food security within the holistic integrated concept of the water–energy–food (WEF) nexus. The paper summarizes the experience the author gained through working on various research projects at national and international ...
Ragab Ragab
wiley   +1 more source

Break-up fragment topology in statistical multifragmentation models

open access: yes, 2009
Break-up fragmentation patterns together with kinetic and configurational energy fluctuations are investigated in the framework of a microcanonical model with fragment degrees of freedom over a broad excitation energy range.
Ad. R. Raduta, D. H. E. Gross
core   +3 more sources

De la modélisation fictionnelle à la modélisation scientifique à travers la lecture problématisée de l’album Plouf !

open access: yes, 2012
Cette contribution s’inscrit dans une recherche interdisciplinaire sur l’utilisation d’albums de jeunesse pour mettre en œuvre des sequences d’enseignement des sciences a l’ecole primaire. Nous qualifions ces albums de « fiction realiste » en raison de l’
M. Soudani, Jean-Loup Héraud
semanticscholar   +1 more source

Beyond the Metrics: Context‐Aware Calibration for Better Drain Flow Modelling

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT Robust hydrological and water quality modelling is essential for advancing the understanding and management of engineered agricultural subsurface drainage systems. Achieving credible model output hinges on calibration strategies that are both rigorous and context sensitive. At the field scale, accurately capturing the dynamics of nutrient load
R. Caleb Bruhn   +3 more
wiley   +1 more source

A minimum principle in mRNA editing ?

open access: yes, 2001
mRNA editing of sequences of many species is analyzed. The nature of the inserted nucleotides and the position of the insertion sites, once fixed the edited peptide chain, are explained by introducing a minimum principle in the framework of the crystal ...
Frappat, L., Sciarrino, A., Sorba, P.
core   +2 more sources

Urban wild meat and pangolin consumption across southern forested Cameroon: The limited influence of COVID‐19

open access: yesPeople and Nature, EarlyView.
Abstract Overexploitation of wildlife is pervasive in many tropical regions, and in addition to being a significant conservation and sustainability concern, it has received global attention given discussions over the origins of zoonotic disease outbreaks.
Franklin T. Simo   +8 more
wiley   +1 more source

Analyse de la prise en compte des modes de vie dans les scénarios de prospective énergétique

open access: yesVertigO
Since the Paris Agreement in 2015, various stakeholders have published energy outlook scenarios for France, Europe and the world. They highlight the fact that energy consumption in developed countries is unsustainable.
Clotilde Chagny, Louise Leray
doaj   +1 more source

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