Results 31 to 40 of about 490,095 (234)

Canalized to heat, plastic to cold: adaptive coordination of leaf and seed strategies in populations spanning an elevational gradient

New Phytologist, EarlyView.
Summary In tropical mountains, surviving temperature extremes demands finely tuned strategies. We investigated how populations of the bromeliad Pitcairnia flammea across a 2200 m elevational gradient balance genetic canalization and plasticity, and whether thermal strategies are coordinated between seeds and leaves.
Cleber J. N. Chaves, Danilo U. Tavares, Isabella V. Lemos‐Silva, João P. S. P. Bento, Henrique Vilela‐Bianchini, Paulo Aecyo, Tami C. Cacossi, Marília M. Tavares, Gabriel P. Sabino, Vitor de A. Kamimura, Wagner L. dos Santos, Lucas N. Gonçalves, Karina T. Silva, Juliana L. S. Mayer, Rafael V. Ribeiro, Diego Escobar‐Escobar, Kenneth J. Feeley, Clarisse Palma‐Silva   +17 more
wiley   +1 more source

Seleccion para resistencia a insectos. Manejo de la plaga y metodologia de evaluacion y seleccion [PDF]

, 2017
Obtaining insect-resistant var. involves (1) searching for sources of resistance, (2) reconfirming levels of resistance, (3) hybriding, and (4) selecting resistant progenies. Sources of resistance can be obtained from native var., introduced foreign var.,
Cardona, C.
core  

Quantifying Mozambique's Peace Dividend: An Application of the Synthetic Control Method

Review of Development Economics, EarlyView.
ABSTRACT Using the synthetic control method and data from 20 African countries, this study quantifies the peace dividend in Mozambique, a country that experienced over 15 years of civil war. More specifically, we use data from 1977 to 2018 to investigate whether the end of the civil war in Mozambique in 1992 brought significant benefits to the country ...
Tendai Gwatidzo, Aldo Sitoe, Busani Moyo
wiley   +1 more source

Caracterización de la resistencia a nematodos en tomate [PDF]

, 2016
Meloidogyne es un género de nematodos fitófagos que genera un gran daño en numerosos cultivos del mundo. Su identificación y control resultan dificultosos, por eso es importante encontrar herramientas de manejo que sean viables y sustentables.
Comezaña, María Micaela
core  

Along the Silenced Footsteps of Latin American Pastoralists: From Mexico to Argentina, a Journey Through Pastoral Systems in Latin America

The Journal of Latin American and Caribbean Anthropology, Volume 31, Issue 1, March 2026.
ABSTRACT Pastoralism worldwide faces a complex landscape of increased pressures and exclusion. Beyond ecological and economic challenges, pastoralists suffer eroding cultural identity, limited generational renewal, and political marginalization. Yet pastoral livelihoods are increasingly recognized as stewards of sustainable futures and amongst the best
Greta Semplici, Pablo Manzano
wiley   +1 more source

Evaluación de las propiedades físicas y mecánicas de bloques de concreto con incorporación de aserrín, perlas de poliestireno y caucho

Gaceta Técnica
En esta investigación se optó por incorporar materiales reutilizables, como aserrín, perlas de poliestireno y caucho, en la fabricación de bloques de concreto, con el propósito de evaluar sus propiedades físicas y mecánicas.
Lindaura Lizbet Palomino Salvatierra, Yessica Dany Hoyos Vásquez, Leonel Chahuares Paucar   +2 more
doaj   +1 more source

Hormigones de ultra alta resistencia reforzados con fibras [PDF]

, 2016
Los materiales de ultra alta resistencia con cemento portland revisten interés para el refuerzo y reparación de construcciones de hormigón; el uso para la extensión de la vida en servicio de estructuras de hormigón armado o en estructuras expuestas ...
Giaccio, Graciela Marta, Torrijos, María Celeste, Zerbino, Raúl   +2 more
core  

From Colonial Natures to Entangled Ecologies: Making Due and Relational Geographies of Indigenous Resurgence in the Chaco

Antipode, Volume 58, Issue 1, January 2026.
Abstract This paper offers an alternative reading of decolonial geographies by examining how people make due in the context of colonial natures. Drawing on collaborative ethnographic research, we illustrate how everyday acts of reclaiming ancestral lands serve as practices of resistance that foment Enxet and Sanapaná resurgence in Paraguay's Chaco.
Joel E. Correia, Clemente Dermott
wiley   +1 more source

Estudio comparativo entre dos sistemas adhesivos y un metal primer utilizados en la reparación de amalgama con resina compuesta y su resistencia a la tracción, in vitro [PDF]

, 2017
Tesis (Cirujano Dentista)El presente estudio tuvo como objetivo comparar la resistencia a la tracción de tres sistemas adhesivos utilizados en la reparación de amalgama con resina compuesta.
Jamasmie Chávarri, Jacinta, Rosas Muñoz, Camila   +1 more
core  

Genetic Diversity of Polymyxin Resistance Genes in Klebsiella pneumoniae Clinical Isolates

Molecular Ecology, Volume 35, Issue 2, January 2026.
ABSTRACT This study investigates the genetic diversity and evolutionary mechanisms driving polymyxin resistance in Klebsiella pneumoniae, a critical priority pathogen. By analysing mgrB, phoPQ and pmrAB genes in susceptible (PM‐S) and resistant (PM‐R) populations through neutrality tests (Tajima D, Fu & Li's D) we uncovered polygenic adaptation and ...
Daniel Miceli Serwy, Maria Eduarda Rocha Conde, Ana Luiza Carneiro Alencar, Roberto Leonan Morim Novaes, Josué da Costa Lima‐Junior, Fabio Faria da Mota, Ana Paula Carvalho‐Assef, Teca Calcagno Galvao, Viviane Zahner   +8 more
wiley   +1 more source