Results 31 to 40 of about 1,186,113 (254)
From Glyph to Element Symbol – A Story of Names
CHIMIA, 2019 When I write the symbol Fe, all scientists know that I am talking about iron. Today's chemists use element symbols in formulae without thinking where they came from. This article looks at the history of element symbols and why we use the ones we
Edwin C. Constable
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The Genetic Code as a Periodic Table: Algebraic Aspects [PDF]
, 2000 The systematics of indices of physico-chemical properties of codons and amino acids across the genetic code are examined. Using a simple numerical labelling scheme for nucleic acid bases, data can be fitted as low-order polynomials of the 6 coordinates ...
Bashford +30 more
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On a generalization of Jacobi's elliptic functions and the Double Sine-Gordon kink chain [PDF]
, 2009 A generalization of Jacobi's elliptic functions is introduced as inversions of hyperelliptic integrals. We discuss the special properties of these functions, present addition theorems and give a list of indefinite integrals.
Baker H. F. +4 more
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Journal of Science and Education, 2023 This study focused on two crucial chemistry concepts, chemical bonding and related reactions. It explored how learners may conceptually use the periodic table in their scientific understanding.
Thabo Mhlongo, Thomas Dipogiso Sedumedi
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Application of a periodic table for the genetic code to influenza A/H3N2 virus [PDF]
, 2007 If biologists can utilize a table to have access to biological phenomena in the manner analogous to the periodic table for chemical elements, they may get hold of a directing post in life science.
Susumu Morimoto
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Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders
Population Ecology, EarlyView.We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa +2 more
wiley +1 more source
Exponentially small asymptotic formulas for the length spectrum in some billiard tables [PDF]
, 2015 Let $q \ge 3$ be a period. There are at least two $(1,q)$-periodic trajectories inside any smooth strictly convex billiard table, and all of them have the same length when the table is an ellipse or a circle.
Martín, Pau +2 more
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Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors
Population Ecology, EarlyView.Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source
30 ANOS DAS TABELAS PERIÓDICAS DA SBQ: CURSOS PASSADOS E ESTADO ATUAL [PDF]
Química NovaIn 2025, the Brazilian Chemical Society (SBQ) celebrates the 30th anniversary of its periodic table of the elements, first launched in 1995 in two printed formats: an A4-sized version with detailed chemical information and a poster version with a ...
Ana Paula de Lima Batista +3 more
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Chaotic dynamics in a simple bouncing ball model
, 2010 We study dynamics of a ball moving in gravitational field and colliding with a moving table. The motion of the limiter is assumed as periodic with piecewise constant velocity - it is assumed that the table moves up with a constant velocity and then moves
Okninski, Andrzej +1 more
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