Results 31 to 40 of about 533,318 (255)

Flower color variation in Digitalis purpurea: Pollination and soil influences across native and introduced populations

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Flower color, a key trait influencing plant–pollinator interactions, may be influenced by abiotic factors such as soil. We investigated association between pollinators, soil characteristics, and flower color variations in Digitalis purpurea across native populations in Sweden and introduced populations in Bolivia.
Sissi Lozada‐Gobilard   +6 more
wiley   +1 more source

On Maximum Signless Laplacian Estrada Indices of Graphs with Given Parameters [PDF]

open access: yes, 2014
Signless Laplacian Estrada index of a graph $G$, defined as $SLEE(G)=\sum^{n}_{i=1}e^{q_i}$, where $q_1, q_2, \cdots, q_n$ are the eigenvalues of the matrix $\mathbf{Q}(G)=\mathbf{D}(G)+\mathbf{A}(G)$. We determine the unique graphs with maximum signless
Ellahi, H. R.   +3 more
core  

Olfactory Bulb Volume Reflects Olfactory Dysfunction and Network Organization: Insights From the Population‐Based Rhineland Study

open access: yesInternational Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Olfactory dysfunction is common in aging and an early symptom of neurodegenerative diseases, but how structural (olfactory bulb [OB] volume) and functional (olfactory network [OFN] functional connectivity [FC]) brain features interact to shape odor identification ability remains unclear.
Weiyi Zeng   +4 more
wiley   +1 more source

Fauna de flebotomíneos (Diptera: Psychodidae) em fragmentos de floresta ao redor de conjuntos habitacionais na cidade de Manaus, Amazonas, Brasil. I. Estratificação Vertical Sand flies fauna (Diptera: Psychodidae) in forest fragments around housing complexes in the Manaus municipality, state of Amazonas, Brazil. I. Vertical Stratification

open access: yesActa Amazonica, 2006
No período de janeiro a agosto de 1999 foram realizadas coletas de flebotomíneos (Diptera: Psychodidae) em duas áreas de floresta residual (Estrada do Turismo e Cidade de Deus), na periferia da cidade de Manaus (AM), tendo o objetivo de verificar as ...
Marlisson Augusto Costa Feitosa   +1 more
doaj   +1 more source

Mary Hays’s Biography of María de Estrada, a Spanish Woman in the American Conquest

open access: yesES Review, 2017
This article focuses on Mary Hays’s entry of María de Estrada in her Female Biography (1803), and how this English writer dealt with issues of gender, race, religion and nation by means of the mere inclusion of Estrada in this collection of women’s ...
María Jesús Lorenzo-Modia
doaj   +1 more source

Noncommutative Mixmaster Cosmologies [PDF]

open access: yes, 2012
In this paper we investigate a variant of the classical mixmaster universe model of anisotropic cosmology, where the spatial sections are noncommutative 3-tori. We consider ways in which the discrete dynamical system describing the mixmaster dynamics can
Estrada, Christopher, Marcolli, Matilde
core   +2 more sources

Bounds on the Distance Energy and the Distance Estrada Index of Strongly Quotient Graphs

open access: yesJournal of Applied Mathematics, 2013
The notion of strongly quotient graph (SQG) was introduced by Adiga et al. (2007). In this paper, we obtain some better results for the distance energy and the distance Estrada index of any connected strongly quotient graph (CSQG) as well as some ...
Ş. Burcu Bozkurt   +2 more
doaj   +1 more source

Random Rectangular Graphs [PDF]

open access: yes, 2015
A generalization of the random geometric graph (RGG) model is proposed by considering a set of points uniformly and independently distributed on a rectangle of unit area instead of on a unit square [0,1]^2.
Estrada, Ernesto, Sheerin, Matthew
core   +2 more sources

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

open access: yesThe Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Prospecting of Architectural Features Using LiDAR‐UAV Technology, Deep Neural Networks and Visualization Techniques: A Case Study in Kuélap and Cambolín (NW Peru)

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT High‐resolution and accurate synoptic images of terrestrial topography, even in densely forested areas, have proven valuable for archaeology by enabling the identification and characterization of relief patterns associated with ancient human activities. This study presents a novel approach that integrates digital terrain models (DTMs) obtained
Jhon A. Zabaleta‐Santisteban   +13 more
wiley   +1 more source

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