Buscar
Mostrando ítems 1-10 de 9620
Covalent adsorption of functional groups on [N]-carbophenes
(2022-02-01)
Starting from the planar molecule 1,3,5-trihydroxybenzene, Du et al reported synthesizing one of a couple of possible 2D materials: graphenylene or 3-carbophene [1]. 3-carbophene is a member of a novel class of two-dimensional ...
Species functional redundancy, random extinctions and the stability of ecosystems
(Wiley-blackwellMaldenEUA, 2001)
A COMMUTATOR RIGIDITY FOR FUNCTION GROUPS AND TORELLI S THEOREM
(Universidad Católica del Norte, Departamento de Matemáticas, 2003)
On cohomologies and extensions of cyclic groups
(ELSEVIER SCIENCE BV, 2011)
Cohomology groups H(s)(Z(n), Z(m)) are studied to describe all groups up to isomorphism which are (central) extensions of the cyclic group Z(n) by the Z(n)-module Z(m). Further, for each such a group the number of ...
A homological version of the implicit function theorem
(Springer, 2006-06-01)
Our objective in this paper is to prove an Implicit Function Theorem for general topological spaces. As a consequence, we show that, under certain conditions, the set of the invertible elements of a topological monoid X ...
Functional groups of microcrustaceans along a horizontal gradient in a Neotropical lake colonized by macrophytes
(2021-03-01)
Here we analysed the taxonomic and functional diversity of microcrustaceans along a horizontal gradient from the littoral to pelagic zones of a marginal lake. We hypothesized that in the littoral zone, occupied by high ...
Effect of different exercise programs on the psychological and cognitive functions of people with Parkinson's disease
(2013-01-01)
The purpose of this study was to analyze the effect of different exercise programs on the psychological and cognitive functions in patients with Parkinson's disease (PD). Forty-five patients with PD participated in the ...
Nest Digging by Leaf-Cutting Ants: Effect of Group Size and Functional Structures.
(2011-01-01)
Leaf-cutting ant workers dig underground chambers, for housing their symbiotic fungus, interconnected by a vast quantity of tunnels whose function is to permit the entrance of food (leaves), gaseous exchanges, andmovement ...
Surface Physicochemical and Structural Analysis of Functionalized Titanium Dioxide Films
(2018-06-05)
Titanium and its alloys are recognized as acceptable materials for many applications. The properties of titanium dioxide (TiO2) thin films are directly related to the structural characteristics of the material, which can ...
Beauty before age: landscape factors influence bird functional diversity in naturally regenerating fragments, but regeneration age does not
(Wiley-Blackwell, 2016-03-01)
Effective ecological restoration actions should be able to recover ecosystem processes that influence community development in the long term. However, there is scarce information on how landscape factors promote or accelerate ...