Results 61 to 70 of about 396,255 (330)

Effect of SSZ‐13 Zeolite Loading and Synthesis Time on the CO2/N2 Separation Performance of PDMS Mixed Matrix Membranes

open access: yesJournal of Applied Polymer Science, EarlyView.
Advantages of MMMs and the Robeson plot detailing improved performance of the 4d05% membrane. ABSTRACT Mixed matrix membranes were produced by incorporation of SSZ‐13 zeolites into polydimethylsiloxane (PDMS) to assess the effect of filler properties and concentration on the CO2/N2 separation efficiency compared to pure PDMS membranes.
Alice Cardoso Takahashi   +7 more
wiley   +1 more source

Antivenenos ofídicos: comparación del desempeño de dos métodos de obtención [PDF]

open access: yes, 2013
El envenenamiento por serpientes venenosas es frecuente en algunas zonas de Argentina, particularmente en las provincias del noreste y noroeste. Según datos del Programa Nacional de Ofidismo, el número de mordeduras es de alrededor de 1.200 anuales; son ...
Cascone, Osvaldo   +6 more
core  

Effect of Ramped Oxygen Flow During Magnetron Sputtering on the Structural, Optical, and Photoelectrochemical Properties of WO3‐x Thin Films

open access: yesAdvanced Physics Research, EarlyView.
A compositionally graded WO3‐x thin film was engineered through a controlled linear increase of oxygen flow during reactive magnetron sputtering. This deposition strategy yields a gradual transition from an oxygen‐deficient, conductive bottom layer to a more stoichiometric and crystalline surface layer, forming an intrinsic gradient homojunction.
Helen Caroline de Souza Barros   +10 more
wiley   +1 more source

Genes, chicas y laboratorios [PDF]

open access: yes, 2006
Como a Mozart, una genialidad precoz en un empeño concreto impidió a James D. Watson cristalizar una personalidad equilibrada. El codescubridor de la estructura en doble hélice antiparalela del ADN, una de las imágenes del siglo, escribe sus memorias con
García Olmedo, Francisco
core   +1 more source

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

open access: yesThe Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae   +4 more
wiley   +1 more source

Los laboratorios de la Junta para Ampliación de Estudios e Investigaciones Científicas (J.A.E.) y la Residencia de Estudiantes (1912-1939)

open access: yesAsclepio: Revista de Historia de la Medicina y de la Ciencia, 2007
La política de jóvenes pensionados científicos en el extranjero desarrollada por la JAE tuvo un complemento importante en la puesta en marcha de una serie de pequeños laboratorios científicos y centros de investigación agrupados principalmente en el ...
Josep L. Barona
doaj   +1 more source

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

open access: yesThe Anatomical Record, EarlyView.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

Manual de Buenas Prácticas de Laboratorio (BPL) de la Industria Fitofarmacéutica ISNAYA [PDF]

open access: yes, 2016
La presente investigación se basó en el desarrollo de un estudio en Laboratorios ISNAYA Nicaragua en la ciudad de Estelí, en cuanto a las Buenas Practicas de Laboratorios (BPL) en el área de control de calidad, con el objetivo de analizar el ámbito ...
Castillo Hudiel, Mayerling   +2 more
core  

Histovariability and fossil diagenesis of Pissarrachampsa (Pseudosuchia, Notosuchia, Baurusuchidae) from the Upper Cretaceous of Southeast Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Notosuchians were key components of western Gondwanan Cretaceous ecosystems in terrestrial predator niches and exhibited remarkable taxonomic and ecological diversity. Previous research has explored their physiology, metabolism, and histology, revealing varied growth patterns and life history strategies.
Tito Aureliano   +5 more
wiley   +1 more source

Estimation and rapid identification of later stages during embryonic development of the oviparous lizard Sceloporus aeneus (Squamata: Phrynosomatidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract Stages of embryonic development for reptiles have been presented in tables that may include all or part of embryonic development. When oviposition occurs in some lizards, embryos are already in the later stages of development; likewise, the size of the eggs increases as incubation time progresses.
Nivia Rocio Antonio‐Rubio   +3 more
wiley   +1 more source

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