Results 41 to 50 of about 14,931,177 (238)

Comparison of the seasonal evolution of the South Asian high associated with two types of El Niño event

open access: yesAtmospheric and Oceanic Science Letters, 2017
El Niño (EN) episodes can be classified based on their time of onset as spring onset EN (SPEN) events and summer onset EN (SUEN) events. To evaluate the different influences of SPEN and SUEN events on the South Asian high (SAH), this study compared the ...
Zhen-Kun LI   +6 more
doaj   +1 more source

Effects of Biotin on a Fluorescein‐Based Photosensitizer Revealed by Multiscale Computational Modeling

open access: yesChemistry – A European Journal, EarlyView.
Biotinylation of a fluorescein‐based photosensitizer enhances its performance in PDT through a synergistic dual action. In addition to Type II singlet oxygen generation common to both dyes, the biotinylated system induces stronger membrane perturbation and higher local accumulation in lipid membranes, associated with increased water permeability and ...
Valeria Butera   +4 more
wiley   +1 more source

La influencia de la justicia deontológica en el principio del interés superior del niño en el estado Peruano [PDF]

open access: yes, 2021
En la presente investigación, se formuló el siguiente problema general: ¿De qué manera influencia la justicia deontológica al principio del Interés Superior del Niño en el Estado peruano?, siendo su objetivo general: analizar la influencia de la justicia
Palomino Alfaro, Jorge Luis   +1 more
core  

Captivated by Kinesin

open access: yesCytoskeleton, EarlyView.
ABSTRACT Few proteins have inspired as much curiosity as kinesin. Since its discovery 40 years ago, kinesin has become one of the best understood molecular machines in biology, yet it continues to reveal new questions about how cells organize and move their contents.
Ronald D. Vale
wiley   +1 more source

Ametropía y ambliopía en escolares de 42 escuelas del programa “Escuelas Saludables” en la DISA II, Lima. Perú, 2007-2008

open access: yesActa Médica Peruana, 2009
Introducción: en el Perú con casi 12 millones de niños, no se han reportado hasta la actualidad estudios de prevalencia de ametropía o ambliopía en escolares.
Carlos Carrión Ojeda   +5 more
doaj  

Efectos ecológicos del fenómeno ENOS en Colombia

open access: yesRevista Peruana de Biología, 2014
El fenómeno ENOS, tiene un sustancial efecto sobre las variaciones del clima a nivel mundial; por lo tanto, no sorprende que sus efectos tengan un impacto ecológico y socioeconómico fuerte, alterando la seguridad alimentaria de los países a nivel mundial.
Yesid Carvajal   +2 more
doaj   +1 more source

Climate‐driven resource availability drives medium‐ and broad‐scale temporal changes in owl–prey interactions over 24 years in a semi‐arid ecosystem

open access: yesEcography, EarlyView.
Predator–prey interactions are vital to ecosystem functioning but may be disrupted by climate change. We investigated a food‐web network involving three owl species over 24 years in a semi‐arid ecosystem at Bosque Fray Jorge National Park, Chile.
Jazmin M. Quiroz‐Calizaya   +12 more
wiley   +1 more source

Nuevos casos de Paracoccidioidomicosis

open access: yesRevista Peruana de Medicina Experimental y Salud Pública, 1998
La paracoccidioidomicosis es causada por el hongo Paracoccidioides brasiliensis. Esta infección es crónica y usualmente asintomática en niños. La distribución geográfica está limitada a Centroamérica y América del Sur. En el presente estudio se describen
J Casquero   +4 more
doaj  

Understanding the El Niño Costero of 2017: The Definition Problem and Challenges of Climate Forecasting and Disaster Responses

open access: yesInternational Journal of Disaster Risk Science, 2017
This preliminary study examines the definition problem and challenges of climate forecasting and disaster responses associated with the El Niño costero (coastal) of 2017, which developed rapidly with no warning and had catastrophic effects in Peru.
Ivan J. Ramírez, Fernando Briones
doaj   +1 more source

Changes in El Niño characteristics and air–sea feedback mechanisms under progressive global warming

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2023
In this study, we investigate the potential changes of El Niño characteristics, including intensity, frequency and CP/EP El Niño ratio, under progressive global warming based on the 140-year CMIP6 model simulation outputs with the 1pctCO2 experiment ...
Min-Hua Shen, Jia-Yuh Yu
doaj   +1 more source

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