Results 61 to 70 of about 218,352 (268)

A Note on the Estimation of the Hölder Constant [PDF]

open access: yes, 2013
In this article, we develop a nonparametric estimator for the Hölder constant of a density function. We consider a simulation study to evaluate the performance of the proposal and construct smooth bootstrap confidence intervals.
Henry, Guillermo Sebastian   +2 more
core   +1 more source

Filter feeders living on suspension feeders: New insights into the lifestyle and distribution of Arcturidae Dana, 1849 (Crustacea: Isopoda) around Iceland

open access: yesMarine Ecology, EarlyView.
Abstract The focus of the present study was on arcturid isopods occurring in the subarctic region around Iceland. Data from two decades of sampling with an epibenthic sledge (EBS) during numerous expeditions of the BIOICE (Benthic Invertebrates of Icelandic Waters; 1992–2004) and IceAGE (Icelandic marine Animals: Genetics and Ecology; 2011—ongoing ...
Vivien Lukas Hartmann   +5 more
wiley   +1 more source

Ecología urbana

open access: yesLetras Verdes: Revista Latinoamericana de Estudios Socioambientales, 2013
Una particularidad de la producción de conocimiento en el siglo XXI es la emergencia de campos e investigaciones que integran disciplinas para el estudio de problemas o temas específicos.
Nicolás Cuvi
doaj   +1 more source

Metal–organic frameworks meet polymer brushes: enhanced crystalline film growth induced by macromolecular primers [PDF]

open access: yes, 2017
We used poly-(3-sulfopropylmethacrylate) brushes as macromolecular 3D primers to promote heterogeneous nucleation and growth of archetypal ZIF-8 MOF thin films.
Allegretto, Juan Alejandro   +6 more
core   +3 more sources

Increased arbuscular mycorrhizal fungal biomass and diversity in soil under long‐term climate drying and warming

open access: yesNew Phytologist, EarlyView.
Summary Arbuscular mycorrhizal fungi (AMF) support critical ecosystem services including plant resource acquisition and productivity. AMF functional traits such as relative biomass investment in root vs soil colonization or drought tolerance are thought to be evolutionarily conserved within AMF lineages and might influence AMF community responses to ...
María del Mar Alguacil   +6 more
wiley   +1 more source

A gestão dos recursos humanos numa das instituições de Ensino Superior angolana

open access: yesRevista Angolana de Ciências, 2019
A presente investigação tem como principal objectivo determinar factores que contribuem para gestão dos recursos humanos no departamento de ciências exactas do Instituto Superior de Ciências de Educação do Huambo. Para estudar esta situação procedeu-se a
André Massuno, Marc Marie Jacquinet
doaj  

Middle Ordovician conodonts and graptolites at Los Cauquenes range, central Precordillera of San Juan, Argentina [PDF]

open access: yes, 2013
The Ordovician System is superbly represented in the Precordillera of western Argentina, at the Andean foothills. During the Middle Ordovician, an important paleogeographical rearrangement of depocenters and source areas took place associated with the ...
Albanesi, Guillermo Luis   +2 more
core  

Ciencia y “narratividad”. Hacia una clasificación de los usos de la narración en ciencias exactas y naturales

open access: yesLetras (Lima), 2022
Este artículo aborda algunas manifestaciones de la narración en ciencias con la intención más abarcadora de contribuir a la comprensión de su uso en ámbitos factuales. En primer término, tomando como punto de partida algunos acercamientos previos al problema de la “narratividad”, se propone un modelo teórico-analítico que establece diez condiciones de ...
openaire   +4 more sources

Rickettsiales in South America: A Systematic Review of Their Molecular Detection and Distribution in Arthropods and Vertebrates

open access: yesPublic Health Challenges, Volume 5, Issue 2, June 2026.
ABSTRACT Bacteria of the order Rickettsiales comprise a diverse group of obligate intracellular microorganisms that are globally distributed and highly prevalent in tropical and subtropical regions. In South America, these bacteria have been associated with arthropod vectors, such as ticks, fleas, mites, lice, and certain dipterans, as well as with a ...
Cristian J. Zamorano‐Gómez   +3 more
wiley   +1 more source

Revisión de las ?Hydrocotyle? argentinas

open access: yesLilloa, 1938
Revisión de las Hydrocotyle (Apiales) argentinas. * Presentado a la Facultad de Ciencias Exactas, Físicas y Naturales de la Universidad de Buenos Aires, para optar al grado de Doctor en Ciencias Naturales.
Román A. Pérez-Moreau
doaj  

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