Results 131 to 140 of about 18,945,403 (319)
ChemistryEurope, EarlyView.Enantiomerically enriched borylalkylidenecycloalkanes can transfer axial chirality to spirocyclic compounds with central chirality, without erosion of enantiomeric ratio. The method involves cyclopropanation, borylcyclopropanation, epoxidation, and aziridination reactions, that proceed in astereodivergent manner giving access to spirocycles with ...
Nerea Iragorri +4 more
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Index Comunicación, 2013 With a critical and comparative perspective, the article outlines the digital universe reality in Africa, taking into account regional differences.
Antonio García Jiménez +2 more
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E-gobierno y funcionamiento de servicios en línea del Gobierno de Méndez
Revista Científica Arbitrada Multidisciplinaria PENTACIENCIASEl desarrollo de la globalización ha permitido que un sin número de sociedades se vinculen a la era digital, la cual, está caracterizada por el acceso a la información a través de canales en línea. La utilización e-gobierno y los funcionamientos de los servicios en línea, pasaron de ser una opción a una necesidad, puesto que se convirtieron en ...
Ginger Esperanza Bayas Estrada +1 more
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Chemistry – A European Journal, EarlyView.Despite the fact that Pt(II) in square‐planar complexes exhibits Lewis basic properties toward electrophilic species (E⁺), the presence of oxygen atoms acting as competing Lewis basic sites leads to the formation of Pt─O─E⁺─O─Pt or Pt─O─E⁺ type complexes, in which no direct metal–metal bonds are observed.
Laura Martínez‐Romera +4 more
wiley +1 more source
Chemistry–Methods, EarlyView.Strong external magnetic fields can keep paramagnetic porous particles static without falling down while immersed in a liquid medium, and the strength of the required magnetic field, controlled indirectly by the distance to a permanent magnet, correlates with the mass of adsorbate captured, giving rise to a new technique for quantifying adsorption ...
Rubén Pérez‐Aguirre +5 more
wiley +1 more source
Opportunities and threats for agrifood firms. The case of wineries applying Rasch analysis
Wine Economics and PolicyThis article identifies the opportunities and threats perceived by winery managers in the new general environment after to Covid-19. The sample comprised 66 wineries located in the Canary Islands (Spain), whose managers answered a questionnaire.
Vanessa Yanes-Estévez +1 more
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ChemPhysChem, Volume 26, Issue 6, March 15, 2025.The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida +3 more
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México: entre la corrupción y los datos abiertos gubernamentales
Boletín Científico Sapiens Research, 2017 La relación entre democracia y corrupción ha sido difícil de descifrar. Muchas investigaciones se han realizado en torno a ello desde la cultura, la historia, la ciencia política y la teoría política.
Rodrigo Sandoval Almazan
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Las disputas por las memorias de la conquista: la crónica de Fernando de Alva Ixtlilxóchitl
Memoria Americana, 2022 Las memorias de la conquista meosamericana fueron registradas en manus-critos conocidos como el corpus de las crónicas de tradición indígena que res-ponden a un complejo de significados temporales y espaciales, así como a las preocupaciones de sus ...
Clementina Battcock +1 more
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Políticas de identificación y gobernanza: Los fundamentos jurídicos, técnicos e institucionales que rigen las relaciones e interacciones del ciudadano con el gobierno y la sociedad [PDF]
, 2010 Mia Elisabeth Harbitz, Iván Arcos Axt
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