Results 41 to 50 of about 62,762 (261)

Radium Speciation in Simulated Digestive Biofluids: Insights from Electrospray Ionization Mass Spectrometry and Thermodynamic Modeling

Analysis &Sensing, EarlyView.
Electrospray ionization mass spectrometry (ESI‐MS) combined with thermodynamic modeling provides the first direct characterization of radium speciation in synthetic gastrointestinal biofluids. Free Ra2+ ions predominate with minimal protein binding and negligible EDTA complexation. Crown ethers enable effective Ra complexation.
Linus Holtmann, Tim Schmalz, Tobias Weissenborn, Felix Stäger, Beate Riebe, Clemens Walther   +5 more
wiley   +1 more source

New species, new combinations and new distributions in neotropical species of Elaphoglossum (Lomariopsidaceae)

Revista de Biología Tropical, 2002
More new species, new combinations and new distributions are made in the large and difficult genus Elaphoglossum in Neotropic. Ten new species are describes, this are: Elaphoglossum adrianae A. Rojas, E. betancuri A. Rojas, E. caridadae A.
Alexander Fco. Rojas-Alvarado
doaj  

Estrategias pedagógicas para la funcionalidad del manual de convivencia escolar

Educación y Ciencia
Este artículo presenta una investigación sobre el impacto de estrategias pedagógicas en el aprendizaje del manual de convivencia en estudiantes de la Institución Educativa Gustavo Rojas Pinilla, en Tunja, Colombia.
Luís Gabriel Sierra
doaj   +1 more source

Mareas Rojas

EDIS, 2008
ENY-851S, a 5-page illustrated fact sheet by Jorge R. Rey, is the Spanish version of ENY-851, “Red Tides” (forthcoming). It explains what these “harmful algal blooms” are, what causes them, their impacts on marine ecosystems, human health, and coastal economies, and strategies for mitigation and control. Includes references.
openaire   +2 more sources

Two‐Phase Nanofluid Flow in a Non‐Newtonian Model Past a Deformable Sheet With Magnetized Environmental Effects: Statistical Modeling and ANOVA Analysis

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This paper presents a comprehensive numerical analysis of magnetohydrodynamic (MHD) Casson nanofluid movement over a permeable, linearly stretching sheet, integrating the contributions of non‐uniform heat generation or absorption and chemical interaction.
Manoj Kumar Sahoo, MD. Shamshuddin, Subhajit Panda, Umair Khan   +3 more
wiley   +1 more source

Nuevas combinaciones en Alansmia M. Kessler, Moguel, Sundue et Labiak (polypodiaceae) para Costa Rica, Panamá y Colombia New combinations in Alansmia M. Kessler, Moguel, Sundue et Labiak (polypodiaceae) from Costa Rica, Panama, and Colombia

Actualidades Biológicas, 2012
Cinco especies de Terpsichorez A.R. Sm. son combinadas aquí en el reciente género Alansmia M. Kessler, Moguel, Sundue et Labiak: A. acrosora (A. Rojas) A. Rojas, A. cocosensis (A. Rojas) A. Rojas, A. esquiveliana (A. Rojas) A. Rojas, A. fabispora (Copel.)
Alexander F. Rojas-Alvarado
doaj  

An artificial neural network–based deep learning model to predict combined stress impact and interaction in plants

Applications in Plant Sciences, EarlyView.
Abstract Premise Plants are frequently exposed to combinations of abiotic and biotic stresses that pose a greater threat to yield and productivity than individual stresses. However, knowledge of the impact of many stress combinations in numerous plants is limited due to the lack of experimental data, which could take decades to generate.
Piyush Priya, Prachi Pandey, Rubi Jain, Manu Kandpal, Shradha Jain, Rim Chaudhury, Venkategowda Ramegowda, Muthappa Senthil‐Kumar   +7 more
wiley   +1 more source

In‐vitro puncture experiment using alligator teeth tracks the formation of dental microwear and its association with hardness of the diet

The Anatomical Record, EarlyView.
Abstract With the development of dental microwear texture analysis (DMTA), there has been an increasing application of DMTA for dietary estimation in extant and fossil reptiles, including dinosaurs. While numerous feeding experiments exist for herbivorous mammals, knowledge remains limited for carnivorous reptiles. This study aimed to qualitatively and
K. Usami, M. O. Kubo
wiley   +1 more source

New taxa, new records and redefined concepts in the Elaphoglossum sect. Elaphoglossum subsec. Pachyglossa (Lomariopsidaceae) from Mexico and Central America

Revista de Biología Tropical, 2003
Twelve new species are described in the taxonomically difficult Elaphoglossum (sect. Elaphoglossum): Elaphoglossum angustifrons A. Rojas, E. delgadilloanum A. Rojas, E. ellipticifolium A. Rojas, E. incognitum A. Rojas, E. mesoamericanum A.
Alexander Fco. Rojas-Alvarado
doaj  

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source