Results 41 to 50 of about 859,463 (220)

Colonization and extinction mediate environmental effects on the phylogenetic diversity of invertebrate communities

open access: yesEcology, Volume 107, Issue 5, May 2026.
Abstract Phylogeny offers a powerful framework for understanding mechanisms driving community assembly. Yet, most empirical studies in community phylogenetics rely on observational approaches. In this study, we explore how two important drivers of community assembly—habitat size and predator presence—shape species richness and phylogenetic relatedness ...
Nadia B. Páez‐Rosales   +2 more
wiley   +1 more source

Producción de plata y comercio en oruro a fines del período colonial. Análisis a través de las fuentes fiscales

open access: yesRevista de Indias, 2001
En este trabajo se analiza la relación entre la producción de plata y el mercado interior en la región minera de Oruro a fines del siglo XVIII. Partiendo del estudio de diferentes fuentes complementarias, entre ellas las fiscales, se pretende explicar la
María Concepción Gavira Márquez
doaj   +1 more source

Un comentario a los aspectos fiscales del Libro Blanco sobre la formación del mercado interior en la Comunidad Económica Europea [PDF]

open access: yes, 1987
El objetivo último de la CEE consiste en la consecución de un conjunto de libertades que garanticen el correcto funcionamiento del Mercado Común, en libertad de circulación de mercancías, de servicios, de personas y de capitales.
Rubio Guerrero, Juan José
core   +1 more source

Districting in last‐mile delivery with stochastic customers

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 3, Page 1636-1655, May 2026.
Abstract Due to the peculiarities of city streets, last‐mile logistics is typically organized using territory‐based routing approaches, which divide the city into a set of districts and assign drivers to deliver in one or more of them. This allows drivers to develop a deep understanding of the characteristics of each district, and clients benefit from ...
Maria Elena Bruni   +3 more
wiley   +1 more source

Life Cycle Plasticity of Colpoda aspera Fed With Petroleum Tolerant Gram‐Positive and Gram‐Negative Bacteria

open access: yesJournal of Eukaryotic Microbiology, Volume 73, Issue 3, May/June 2026.
ABSTRACT Soil recovery after contamination relies on the surviving microbiota to reconstruct microbial food webs. The ciliate Colpoda aspera and Brevundimonas sp., Rhizobium sp1, Rhizobium sp2 (gram‐negative), Bacillus sp1, Bacillus sp2, and Microbacterium sp.(gram‐positive) remain active after pulses of light petroleum contamination.
Laura Mondragón‐Camarillo   +2 more
wiley   +1 more source

El Mercado Europeo de Electricidad [PDF]

open access: yes, 2013
En este artículo se presenta el proceso de construcción del mercado interior a partir del análisis de las tres Directivas comunitarias que lo han impulsado.
Vélez Alvarez, Luis Guillermo
core  

Chromaffin Versus Platelet Granules: What We Have Learned From Chromaffin Cells for Human Studies

open access: yesJournal of Neurochemistry, Volume 170, Issue 5, May 2026.
Chromaffin cells and platelets both utilize exocytosis to release biogenic amines stored within large dense‐core vesicles—specifically chromaffin granules (epinephrine) and δ‐granules (serotonin). While the chromaffin cell is the foundational model for studying the secretory pathway, platelets offer a highly accessible human cell source for clinical ...
Ricardo Borges
wiley   +1 more source

Descendência tropical de Mozart: trabalho e precarização no campo musical

open access: yesArtCultura, 2009
Neste artigo buscamos, de um ponto de vista geral, analisar o atual contexto do mercado de trabalho musical a partir dos aspectos sociais que constituem o sistema produtivo do teatro lírico.
Juliana Coli
doaj  

Repercusiones fiscales para España de la integración europea [PDF]

open access: yes, 1990
Este Documento constituye la versión preliminar del trabajo sobre política fiscal e impositiva integrado dentro del Proyecto "Europa-12" elaborado por el Action and Research Committee on the EC.
Utrilla de la Hoz, Alfonso
core   +1 more source

Wattle and daub experimental workshop: durability testing after 14 years of uninterrupted use [PDF]

open access: yes, 2018
An important factor to analyze when studying the useful lifetime of earth constructions is the detection of any constructive pathologies that may occur; an important consideration when building a house; yet in Argentina information on building with ...
Cuitiño Rosales, Maria Guadalupe   +1 more
core   +1 more source

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