Results 71 to 80 of about 803,607 (186)

Agricultural drought in the Claromecó river basin, Buenos Aires province, Argentina [PDF]

, 2008
The dry and wet periods affecting the Claromecó Creek Basin in the south of the Province of Buenos Aires were analysed applying Palmer’s Model. Palmer’s Drought Severity Index was calculated regionally for five towns for the 1904-1999 period.
Carbone, Maria Elizabeth, Piccolo, Maria Cintia, Scian, Beatriz   +2 more
core   +1 more source

Histological and Gene Expression Analyses of the Arm and Finger Macroglands of Two Hyloxalus Frogs (Dendrobatidae)

Molecular Ecology, Volume 34, Issue 22, November 2025.
ABSTRACT Chemical communication during courtship is well documented in salamanders and newts, but its role in frogs is less understood. In some Neotropical poison frogs, males exhibit specialised mucous glands (SMGs) in the hand integument that express high levels of sodefrin precursor‐like factors (SPFs), an amphibian pheromone. Some species also show
Diana Abondano Almeida, Marvin Anganoy‐Criollo, Taran Grant, Sofiia Klimovych, Lisa M. Schulte   +4 more
wiley   +1 more source

Techno-Economic Assessment and FP²O Technical–Economic Resilience Study of Peruvian Starch-Based Magnetized Hydrogels at Large Scale

Sci
We conducted a techno-economic feasibility study and assessed the FP2O resilience of an industrial plant producing magnetized hydrogels from Peruvian Amarilla Reyna potato starch.
Anibal Alviz-Meza, María Verónica Carranza-Oropeza, Ángel Darío González-Delgado   +2 more
doaj   +1 more source

Antenas ópticas y detectores de luz [PDF]

, 2005
La investigación sobre el comportamiento de estructuras metálicas cuyo tamaño es comparable a la longitud de onda de la radiación detectada puede realizarse considerándolas como antenas detectoras de radiación óptica.
Alda, Javier, Boreman, Glenn, López-Alonso, José Manuel, Rico-García, José María   +3 more
core  

The generations of cultural ecosystem services research

Conservation Biology, Volume 39, Issue 5, October 2025.
Abstract Understanding the cultural dimensions of human–nature relationships and integrating them into decision‐making is a central goal of conservation social science. One prominent avenue for this work is the characterization and analysis of cultural ecosystem services (CES) (i.e., nonmaterial aspects of the benefits derived from human–nature ...
Rachelle K. Gould, Terre Satterfield, Kirsten Leong, Jonathan Fisk   +3 more
wiley   +1 more source

Fractionation of a Procyanidin-Rich Grape Seed Extract by a Preparative Integrated Ultrafiltration/Reverse Osmosis/Solid-Phase Extraction Procedure

Membranes
The consumption of grape seed extracts is known for its contribution to animal and human health and is associated with its relevant procyanidin content.
Esperanza Guerrero-Hurtado, Alba Gutiérrez-Docio, Rebeca Fiedorowicz, Marin Prodanov   +3 more
doaj   +1 more source

Genes de defensa en plantas [PDF]

, 1994
Se revisan los avances realizados en la caracterización de los genes que codifican para ciertas familias de proteínas vegetales que son tóxicas o inhibitorias frente a insectos, hongos y bacterias.
Carbonero Zalduegui, Pilar, García Olmedo, Francisco   +1 more
core   +1 more source

Sodium‐Manganese Oxides in Faradaic Desalination: Achieving Long‐Cycling Stability Through Morphological and Structural Optimization

ENERGY &ENVIRONMENTAL MATERIALS, Volume 8, Issue 5, September 2025.
The performance of sodium‐manganese oxides (NMOs) as electrode materials for faradaic deionization is explored to address the challenges of water desalination. By investigating the impact of their morphology and crystal structure, a mixed‐phase NMO demonstrates enhanced salt removal capacity and long‐term stability over 870 cycles, highlighting its ...
Alba Fombona‐Pascual, Sergio Pinilla, Irene Hormigos, Jesús Palma, Julio J. Lado   +4 more
wiley   +1 more source

Caracterización morfológica y espectroscópica de asfaltenos provenientes de diferentes crudos

, 2014
Se estudió la morfologÃa de los asfaltenos Zuata, Boscán y Morichal provenientes de diferentes crudos venezolanos y de los asfaltenos San Jacinto proveniente de un crudo peruano, a través de microscopÃa electrónica de barrido. Se realizó la caracterización espectroscópica mediante absorción infrarroja, resonancia magnética nuclear de protones ...
Borges, Belsay, Del Carpio, Edgar, Urbina de Navarro, Caribay, Ortega, Natalia   +3 more
openaire   +1 more source

Evaluación, diagnóstico e intervención en la comprensión del valor de posición y de numerales arábigos [PDF]

, 2012
Se propone una caracterización de diferentes tareas utilizadas en el diagnóstico, evaluación e intervención en la comprensión del valor de posición y en la escritura de numerales arábigos en niños de Preescolar y Básica Primaria.
Bedoya, Nohemy Marcela, Medina, Diego Alonso, Muñoz, Bibiana   +2 more
core