Results 61 to 70 of about 253,036 (222)

Cyclosa Menge, 1866 (Araneidae) Orb‐Weavers Build Stabilimenta That Resemble Larger Spiders

Ecology and Evolution, Volume 15, Issue 11, November 2025.
The orb‐weaving spider Cyclosa longicauda from Peru constructs unique stabilimenta from detritus and silk that visually resemble a larger spider. This previously undescribed behavior likely functions as a sophisticated anti‐predator strategy, with the structure serving as a decoy to misdirect or repel attacks.
George Olah, Phillip J. Torres, Aaron F. Pomerantz, Richard Kirby, Simon Baxter, Juan Grados, Lawrence E. Reeves   +6 more
wiley   +1 more source

Análisis de la situación en el área de los nuevos materiales [PDF]

, 1987
En el presente artículo se realiza un breve estudio de la situación de los nuevos materiales, analizando, primero, qué bloques componen este campo. Se pasa revista a los metales, a las cerámicas, a los plásticos y a los materiales compuestos, concluyendo
Martín Pereda, José Antonio
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

Pilot-scale production of functionalized nanoclays for sustainable agricultural applications: process scale-up and optimization

Discover Chemical Engineering
This study presents the pilot-scale development of environmentally friendly agro-inputs based on natural bentonite functionalized with chitosan (Q) and salicylic acid (SA), based on successful previous laboratory-scale formulations.
Tomás Giannandrea, Jeremías Benjamin, Andres Torres Nicolini, Vera Alejandra Alvarez, Andrea Yamila Mansilla, Romina Paola Ollier Primiano   +5 more
doaj   +1 more source

Cálculo de los factores de intensificación de tensiones generalizados en uniones adhesivas metal-composite [PDF]

, 2005
VI CONGRESO NACIONAL DE MATERIALES COMPUESTOS. Celebrado en Valencia del 27-29 de junio de 2005Las uniones adhesivas entre materiales metálicos y compuestos generan puntos críticos donde la geometría y/o las propiedades de los materiales cambian ...
Barroso Caro, Alberto, Mantic, Vladislav, Ortiz, J.E., París Carballo, Federico, Toro, P   +4 more
core  

Reactivity of Square Planar Pt(II) Complexes Toward Acidic Moieties as H+, M+, and [ML]+ (M = Ag, Au)

Chemistry – A European Journal, Volume 31, Issue 59, October 22, 2025.
Despite the fact that Pt(II) in square‐planar complexes exhibits Lewis basic properties toward electrophilic species (E⁺), the presence of oxygen atoms acting as competing Lewis basic sites leads to the formation of Pt─O─E⁺─O─Pt or Pt─O─E⁺ type complexes, in which no direct metal–metal bonds are observed.
Laura Martínez‐Romera, David Campillo, Daniel Escudero, Miguel Baya, Antonio Martín   +4 more
wiley   +1 more source

Reglas electrónicas como criterio de predicción de compuestos ternarios con coordinación tetraédrica [PDF]

, 2019
Los materiales con coordinación tetraédrica se pueden describir apropiadamente mediante dos ecuaciones que permiten establecer para cada compuesto, dos fónnulas restrictivas, una de ellas de carácter covalente y la otra, de carácter iónico.
Garín C., Jorge L.
core   +1 more source

Foliar spectral signatures reveal adaptive divergence in live oaks (Quercus section Virentes) across species and environmental niches

New Phytologist, Volume 248, Issue 1, Page 370-388, October 2025.
Summary Genomic tools have advanced our understanding of species and population structure, but distinguishing neutral from adaptive evolution remains challenging due to limited methods for measuring a broad spectrum of phenotypic traits. We used spectroscopic data from preserved leaves to test for adaptive divergence among populations of live oaks ...
Mariana S. Hernández‐Leal, J. Antonio Guzmán Q., Antonio González‐Rodríguez, Jeannine Cavender‐Bares   +3 more
wiley   +1 more source

FIQUE FIBER AN ALTERNATIVE FOR REINFORCED PLASTICS. INFLUENCE OF SURFACE MODIFICATION

Biotecnología en el Sector Agropecuario y Agroindustrial, 2014
In this paper are studied the physicochemical, mechanical and thermal properties of the natural fique fibers, that can be used as reinforcement of polymeric matrices.
MARIO FERNANDO MUÑOZ VELEZ, MIGUEL ANGEL HIDALGO SALAZA R, JOSE HERMINSUL MINA HERNANDEZ   +2 more
doaj  

Análisis de los transitorios de ruido electroquímico para aceros inoxidables 316 Y – DUPLEX 2205 en NaCl Y FeCl

Revista de Metalurgia, 2012
En este trabajo se muestran los resultados obtenidos de las mediciones de ruido electroquímico para diferentes materiales que exhiben corrosión por picaduras.
F. Almeraya-Calderón, F. Estupiñán, P. Zambrano R, A. Martínez-Villafañe, A. Borunda T, R. Colás O, C. Gaona-Tiburcio   +6 more
doaj   +1 more source