Results 41 to 50 of about 781 (162)

Sind i‐Motiv‐Strukturen in DNA kompatibel mit Cytosin–Ag(I)–Cytosin‐Basenpaaren?

Angewandte Chemie, Volume 138, Issue 2, 9 January 2026.
Ein i‐Motiv/Duplex‐Konjugat wurde hinsichtlich seiner Fähigkeit untersucht, die Protonen der hemiprotonierten C:CH+‐Basenpaare durch AgI‐Ionen zu ersetzen, um C–AgI–C‐Basenpaare zu bilden. Interessanterweise wird nur ein einziges solches Basenpaar gebildet, bevor sich das Oligonukleotid in eine Duplexstruktur umlagert.
Victoria Seiffert, Carmen López‐Chamorro, Miquel Barceló‐Oliver, Catharina Erbacher, Uwe Karst, Marian Hebenbrock, Heinz‐Bernhard Kraatz, Miguel A. Galindo, Jens Müller   +8 more
wiley   +1 more source

La contribución de Edgeworth al éxito del macadam. Expansión internacional en sus albores

Informes de la Construccion, 2021
En la historia de la ingeniería de carreteras, el nombre de John Loudon McAdam tiene un lugar de honor como el inventor del firme de macadam. Sin embargo, el diseño original de McAdam presentaba algunas limitaciones que fueron resueltas por Richard ...
José Manuel Sanz García, Manuel G. Romana García, Antonio Sánchez Soliño   +2 more
doaj   +1 more source

Are i‐Motif Structures in DNA Compatible with Cytosine–Ag(I)–Cytosine Base Pairs?

Angewandte Chemie International Edition, Volume 65, Issue 2, 9 January 2026.
An i‐motif/duplex junction was evaluated with respect to its ability to replace the protons from the hemi‐protonated C:CH+ pairs by AgI ions to form C–AgI–C base pairs. Interestingly, only one such metal‐mediated base pair can be formed before the oligonucleotide rearranges into a duplex structure.
Victoria Seiffert, Carmen López‐Chamorro, Miquel Barceló‐Oliver, Catharina Erbacher, Uwe Karst, Marian Hebenbrock, Heinz‐Bernhard Kraatz, Miguel A. Galindo, Jens Müller   +8 more
wiley   +1 more source

Size Effects of TiO2 Nanoparticles as Supports for W‐ and NiW‐Catalysts for Selective 3‐Methylthiophene Desulfurization

ChemCatChem, Volume 18, Issue 1, 15 January 2026.
Rounded TiO2 nanoparticles we sucesfully synthesized with modulated sizes from 109 to 22 nm. We observed the WS2 and NiWS active phases forming parallel slabs to the surface. The presence of Ni helped W to be better dispersed, especially on the smallest nanoparticles, which resulted in the highest activity detected among the series.
Eduardo D. Gutiérrez‐López, Carlos E. Soto‐Arteaga, Sergio Fuentes‐Moyado, Oscar E. Contreras‐López, Miguel Avalos‐Borja, Karime I. Carrera‐Gutiérrez, Leonardo Morales de la Garza, Jorge N. de Díaz de León   +7 more
wiley   +1 more source

Memorias de carretera

Papel Escena, 2015
A mis once años, el Valle del Cauca llegaba hasta una frontera imaginaria entre los municipios de Palmira y Rozo. Más allá de esos límites, para mí, habían unos precipicios enormes donde el río Cauca caía en forma de cascada hasta “el mar de Buenaventura" en él habitaban dragones de mar que tragaban enteros a los incautos que se atrevían a navegar más ...
openaire   +1 more source

Maximum likelihood sampling properties of the estimator of the Smith selection index vector of coefficients

Crop Science, Volume 66, Issue 1, January/February 2026.
Abstract The main Smith selection index objective is to predict the unobservable plant net genetic merit (H$H$). When the phenotypic (P${\bm{P}}$) and genotypic (G${\bm{G}}$) covariance matrices are estimated, the estimator of this index (Î$\hat{I}$) is the best predictor of H$H$ only if the estimator of its vector of coefficients b${\bm{b}}$ (b̂${\bm{
J. Jesús Cerón‐Rojas, Paulino Pérez‐Rodríguez, Reka Howard, Paolo Vitale, José Crossa   +4 more
wiley   +1 more source

Macroeconomic and Sectoral Determinants of Alternative Infrastructure Funding Models in Ghana: A Dynamic Time‐Series Analysis

Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.
ABSTRACT Ghana faces a persistent infrastructure financing gap, prompting the exploration of alternative funding models such as Public–Private Partnerships (PPPs), green bonds, and blended finance instruments. This study uses macroeconomic and sectoral indicators as proxies to evaluate the long‐term impact of these models on economic performance in ...
Samuel Kojo Aidoo, Patricia Lindelwa Makoni   +1 more
wiley   +1 more source

La compleja institucionalidad de la infraestructura vial nacional en Costa Rica, 1998-2014

Revista Nacional de Administración, 2017
En la Administración Figures Olsen (1994- 1998) la política de la infraestructura vial nacional fue redefinida para que la obra vial nacional fuera llevada a cabo con una mayor participación privada en deterioro del protagonismo público, mediante la ley ...
Jorge Alberto Vásquez Rodríguez
doaj   +1 more source

Wetland location and captive breeding influence trans‐Mediterranean movements in the endangered Marbled Duck (Marmaronetta angustirostris)

Ibis, Volume 168, Issue 1, Page 245-258, January 2026.
Waterbirds distributed in semi‐arid and arid regions seem to have adapted their behaviour to the availability and seasonality of wetlands, increasing their mobility range. The Marbled Duck Marmaronetta angustirostris is a threatened waterbird that shows trans‐Mediterranean movements but these are poorly known.
Irene Pacheco‐Guardiola, Juan Manuel Pérez‐García, Óscar Aldeguer, Marcos Ferrández, Claudine de le Court, Juan Antonio Gómez, Francisco Botella   +6 more
wiley   +1 more source

The Germination and Subsequent Development of Cocoa Seedlings (Theobroma cacao L.) Are Subject to Influence From the Pregerminative Methods Employed

Advances in Agriculture, Volume 2026, Issue 1, 2026.
In Peru, cocoa production has increased significantly, thereby establishing a prominent position for this crop in the country’s agricultural landscape. The effect of different pregerminative methods on seed germination of cocoa ecotypes and their influence on seedling development in nursery were evaluated.
Beimer Chuquibala-Checan, Magdiel Torres-de la Cruz, Jani E. Mendoza, Daniel Tineo, Marielita Arce-Inga, Yeltsin A. Álvarez-Robledo, Nilton Atalaya-Marin, Darwin Gómez-Fernández, Malluri Goñas, Amelia Salimonti   +9 more
wiley   +1 more source