Results 41 to 50 of about 381,647 (302)

Relación de los haplogrupos del ANDmit y el polimorfismo fok-I del receptor de vitamina d, en un grupo de pacientes con esclerosis múltiple

open access: yesIatreia, 2010
La Esclerosis Múltiple (EM) es considerada de baja prevalencia en Colombia (1.48 a 4.98), es una enfermedad desmielinizante del SNC. Se ha sugerido que está influenciada por un componente étnico, relacionado con el origen caucásico de las poblaciones en ...
Wilmer A. Cárdenas   +6 more
doaj  

Early adversity and prosocial behavior in adolescents from Bogotá: a cross-sectional study

open access: yesChild and Adolescent Psychiatry and Mental Health
Background The association between Adverse Childhood Experiences (ACEs), prosocial behavior, and depression (like other negative mental health outcomes) has not been thoroughly understood.
Andrés Camilo Cardozo Alarcón   +6 more
doaj   +1 more source

Nachhaltige Ammoniak‐Elektrosynthese Gekoppelt mit Glycerin‐Valorisierung Mittels Eines Adaptiven Dreikomponenten‐Katalysators

open access: yesAngewandte Chemie, EarlyView.
Ein Cu‐Ni‐W‐Dreikomponenten‐Katalysator ermöglicht eine effiziente Umwandlung von Nitrat zu Ammoniak unter gepulster Elektrolyse. Kombinierte experimentelle und theoretische Studien führen seine Leistungsfähigkeit auf die Synergie der Komponenten und regulierte Zwischenprodukte zurück.
Christean Nickel   +14 more
wiley   +1 more source

Synthesis and Characterization of Six Novel Samarium (III) Complexes with L-aspartic Acid, L-glutamic Acid, Glycine and O-phenanthroline, Bipiridile as Ligands

open access: yesRevista Politécnica, 2015
Resumen: Se sintetizaron dos series diferentes de complejos de samario (III): Sm(o-Phen) (Ln)3 y Sm (bipy) (Ln)3 (n = 1-3; L1 = ácido l-aspártico, L2 = ácido l-glutámico, L3 = glicina) mediante métodos clásicos.
E. Cardozo   +6 more
doaj  

Immunogenicity of a 23-valent pneumococcal polysaccharide vaccine in elderly residents of a long-term care facility

open access: yesBrazilian Journal of Infectious Diseases
S. pneumoniae is a significant cause of community-acquired pneumonia in the elderly, and accounts for the majority of the pneumonia deaths among the elderly.
M. Teresa Valenzuela B.   +7 more
doaj   +1 more source

First record of dot-winged crake, Porzana spiloptera, durnford, 1877 (Rallidae) for the central Andes in Argentina [PDF]

open access: yes, 2017
Porzana spiloptera, the Dot-wing Crake, has a patchy distribution in southern South America and has previously been considered as inhabiting exclusively lowland wetlands.
Cuervo Bustamante, Pablo Fernando   +2 more
core   +1 more source

Dibenzazepin‐verbrückte Netzwerk‐Polymer‐Phthalocyanine als abbaubare heterogene Photokatalysatoren

open access: yesAngewandte Chemie, EarlyView.
Photodynamische Dibenzazepin‐Brücke wurde in Zink‐ und Kobalt‐Netzwerk‐Polymer‐Phthalocyanine (NP‐Pcs) eingeführt, um abbaubare heterogene Photokatalysatoren zu erhalten. Zum ersten Mal spielt die Bestrahlung mit Licht eine Schlüsselrolle beim „Design, der Verwendung und dem Abbau” von NP‐Pcs.
Erem Ahmetali   +4 more
wiley   +1 more source

Evaluation of the phenol degradation capacity of microalgae-bacteria consortia from the bay of Cartagena, Colombia

open access: yesTecnoLógicas, 2019
The development of new technologies for environmental reparation has allowed the application of inexpensive alternatives such as bioremediation, which has a high potential to treat ecosystems polluted with hydrocarbons. Microalgae-bacteria consortia have
Daniela Mora-Salguero   +4 more
doaj   +1 more source

Influència de la sal en el desenvolupament tectònic de la Cordillera Oriental dels Andes de Colòmbia [PDF]

open access: yes, 2016
La presència de capes de sal en conques sedimentàries no sempre és fàcil d'observar a causa de processos geològics posteriors com ara la compressió. Un estudi recent ha trobat evidències d'antigues estructures salines a la regió de Guaitiquía, al front d'
Teixell Cácharo, Antonio
core   +1 more source

Comment on Ricci Collineations of Static Spherically Symmetric Spacetimes [PDF]

open access: yes, 1994
We present a counter example to a theorem given by Amir {\em et al.} J. Math. Phys. {\bf 35}, 3005 (1994).
G. Contreras   +6 more
core   +3 more sources

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