Results 61 to 70 of about 146,892 (255)

Predicción del punto de fusión de indoles con base en la estructura molecular usando redes neuronales artificiales [PDF]

open access: yes, 2016
Mediante la aplicación del método de relación cuantitativa de estructura propiedad se determinó un modelo para predecir la temperatura del punto de fusión de indoles a partir de su estructura molecular (n = 86).
Ramírez, N.   +2 more
core  

Detection of the Ammonium Ion in Space

open access: yes, 2013
We report on the detection of a narrow feature at 262816.73 MHz towards Orion and the cold prestellar core B1-bS, that we attribute to the 1(0)-0(0) line of the deuterated Ammonium ion, NH3D+.
Carrasco, E.   +11 more
core   +3 more sources

Connection between decoherence and excited state quantum phase transitions [PDF]

open access: yes, 2009
In this work we explore the relationship between an excited state quantum phase transition (ESQPT) and the phenomenon of quantum decoherence. For this purpose, we study how the decoherence is affected by the presence of a continuous ESQPT in the ...
Arias Carrasco, José Miguel   +4 more
core   +1 more source

Virus del dengue: estructura de serotipos y epidemiología molecular

open access: yesCienciaUAT, 2012
El dengue es una de las enfermedades virales más importantes en el mundo. El virus del dengue es transmitido a los humanos por la picadura de mosquitos del género Aedes aegypti. Este virus es el agente causal de la fi ebre por dengue, así como sus formas severas: fiebre hemorrágica por dengue y síndrome de shock por dengue.
Stephanie Viridiana Laredo-Tiscareño   +2 more
openaire   +2 more sources

Snapshots of Motion: A Novel Structural Intermediate Reveals Conserved Dynamics in Archaeal DNA Ligases

open access: yesProteins: Structure, Function, and Bioinformatics, Volume 94, Issue 6, Page 1245-1258, June 2026.
ABSTRACT We present the first x‐ray crystallographic structural evidence of an archaeal DNA ligase showing the AMP covalent adduct together with further cofactor hydrolysis, capturing a transient intermediary in the first step of the ligation reaction, triggered by the pyrophosphate hydrolysis.
A. X. Quintana‐Armas   +3 more
wiley   +1 more source

Etiquete su molécula

open access: yesEducación Química, 2018
El tema Estructura Molecular, no obstante ser de difícil comprensión para los educandos, se aborda en los cursos de Química de diversos niveles de escolaridad. Sería imposible comprender algunos temas esenciales para la formación del estudiante, si no se
Miguel García Guerrero   +1 more
doaj   +1 more source

RNA-Binding Proteins as Targets to Improve Salt Stress Tolerance in Crops

open access: yesAgronomy, 2020
Salt stress drastically reduce crop productivity. In order to identify genes that could improve crop salt tolerance, we randomly expressed a cDNA library of the halotolerant sugar beet in a sodium-sensitive yeast strain.
Sara Rosa Téllez   +5 more
doaj   +1 more source

A beyond mean field study of Bose gases in a double-well potential with a Feshbach resonance [PDF]

open access: yes, 2012
The Bose-Hubbard model coupled to a Feshbach resonance is studied. Quantum phase transitions are analyzed within a beyond mean field framework in order to get finite size corrections to the simple mean field approach.
Arias Carrasco, José Miguel   +3 more
core   +1 more source

Nuclear Structure Calculations for Two-Neutrino Double-β Decay

open access: yesAdvances in High Energy Physics, 2016
We study the two-neutrino double-β decay in 76Ge, 116Cd, 128Te, 130Te, and 150Nd, as well as the two Gamow-Teller branches that connect the double-β decay partners with the states in the intermediate nuclei.
P. Sarriguren   +2 more
doaj   +1 more source

Influencia de la velocidad de enfriamiento sobre las propiedades estructurales de nanohilos de plata

open access: yesRevista de Investigación de Física, 2011
En el presente trabajo se estudia la influencia de la velocidad de enfriamiento sobre las propiedades estructurales de nanohilos de plata de 1.6 nm de diámetro.
G. Cuba Supanta   +3 more
doaj   +1 more source

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