Results 21 to 30 of about 482,471 (197)

INFLUENCIAS DE UN RELLENO SANITARIO SOBRE LA COMPOSICIÓN, ABUNDANCIA Y DISPERSIÓN DIURNA DE LOS PECES EN LA QUEBRADA EL VENADO, CORREGIMIENTO DE CÓRDOBA, MUNICIPIO DE BUENAVENTURA (VALLE DEL CAUCA, COLOMBIA)

open access: yesRevista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2023
En 2009, se estudió la composición, abundancia y dispersión diurna de los peces presentes en la quebrada El Venado, ubicada en el corregimiento de Córdoba, municipio de Buenaventura, Valle del Cauca, Colombia. La quebrada es uno de los afluentes del río
Carlos E. Fernández M.   +2 more
doaj   +1 more source

Smaller is better: nanobodies meet NMR

open access: yesFEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

Cambio ambiental y desplazamiento de la ictiofauna en el oeste de la Pampasia (Argentina central)

open access: yesBiología Acuática, 2019
Within the Pampas ecoregion during the XX century, heavy climate changes resulting in fish fauna displacements westward of meridian 61. These movements implied three elements: climate change, topographic changes, and animal transport.
Sergio Enrique Gómez   +1 more
doaj  

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

open access: yesFEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Estudio de distribución de tiempos de residencia en un reactor biológico de lecho empacado cerámico

open access: yesCiencia e Ingeniería Neogranadina, 2004
La distribución de tiempos de residencia de un reactor es una característica del mezclado que ocurre dentro de él [ ] 1 [ ] 2 ; su determinación es básica para el diseño de cualquier tipo de reactor en escala real.
Tatiana Rodríguez Chaparro   +2 more
doaj   +3 more sources

Immigration and demographic change in the metropolitan area of Madrid

open access: yesAnales de Geografía de la Universidad Complutense, 2009
The paper analyzes the evolution of the population and its dynamic components in the metropolitan area of Madrid between 1996 and 2006. Work has been done with data from the Municipal Population Census and the Movement of Natural Population.
Enrique Pozo Rivera   +1 more
doaj  

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

open access: yesFEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

DENSIDAD FONONICA Y POTENCIAL DE DEFORMACION

open access: yesRevista de Investigación de Física, 2006
En las últimas décadas se ha desarrollado métodos computacionales para la simulación de modelos de sistemas líquidos y amorfos utilizando potenciales de pares para la formulación de la energía total de una determinada sustancia con métodos del espacio ...
Luis Salazar de Paz
doaj   +1 more source

Gut microbiota alterations in patients with non‐small‐cell lung cancer undergoing chemoradiotherapy

open access: yesMolecular Oncology, EarlyView.
We investigated the impact of concurrent chemoradiotherapy (CRT) on the gut microbiota in patients with locally advanced non‐small‐cell lung cancer. Overall gut microbiota composition remained largely stable throughout CRT while antibiotic exposure may influence microbial diversity.
Hanne Marte Nymoen   +19 more
wiley   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

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