Results 31 to 40 of about 752 (181)

Substrate‐Affinitive P‐Type Azapolycyclic Photosensitizer for Chemoselective Nitrilization Under Mild Conditions

open access: yesAdvanced Science, Volume 13, Issue 36, 29 June 2026.
We developed a series of quinoxalinoquinoxaline (QQ) photosensitizers featuring high and tunable excited‐state reduction potentials (E(PC•+/PC*) = –1.76 to –2.05 V vs. SCE). Their hydrogen‐bonding interaction with carbonyl substrates enables selective single‐electron transfer events for selective nitrilization of 1° amides, offering a tunable ...
Seongwoo Bae, Dongwook Kim, Jinwoo Kim
wiley   +1 more source

Sistema nacional de incentivos a la producción más limpia en Costa Rica

open access: yesTecnología en Marcha, 2009
La producción más limpia (P+L) es una estrategia integrada y preventiva que incrementa la productividad y la competitividad empresarial, a la vez que protege la salud y el ambiente.
Irene Varela Rojas
doaj   +2 more sources

Ion‐Pairing and Counterion Effects in Contemporary Photochemistry

open access: yesAngewandte Chemie Novit, Volume 2, Issue 2, June 2026.
Ion‐pairing and counterion effects have emerged as fundamental yet underexplored determinants of photochemical behavior. Far from inert, counterions, and Coulombic interactions modulate excited‐state dynamics, quenching efficiencies, emission, and catalytic pathways.
Matthias Schmitz, Christoph Kerzig
wiley   +1 more source

Las empresas familiares: una caracterización empresarial y la tipología societaria de capital más adecuada

open access: yesRevista de Fomento Social, 2015
Las empresas familiares representan el motor económico más relevante en la mayoría de los países de economía de mercado. Su enorme importancia macroeconómica ha originado el nacimiento de un movimiento de defensa de sus intereses. Sin embargo, falta por
José Manuel Serrano Cañas
doaj   +1 more source

CyberESP: An Integrated Cybersecurity Framework for SMEs

open access: yesJournal of Software: Evolution and Process, Volume 37, Issue 9, September 2025.
ABSTRACT Cybersecurity is a critical global concern, particularly for small‐ and medium‐sized enterprises (SMEs) with limited resources and expertise. The authors are developing CyberESP, a tailored cybersecurity framework supported by a semi‐automated tool to ensure Spanish SMEs' cybersecurity management.
Jose A. Calvo‐Manzano   +5 more
wiley   +1 more source

On the Significance of Graph Neural Networks With Pretrained Transformers in Content‐Based Recommender Systems for Academic Article Classification

open access: yesExpert Systems, Volume 42, Issue 7, July 2025.
ABSTRACT Recommender systems are tools for interacting with large and complex information spaces by providing a personalised view of such spaces, prioritising items that are likely to be of interest to the user. In addition, they serve as a significant tool in academic research, helping authors select the most appropriate journals for their academic ...
Jiayun Liu   +2 more
wiley   +1 more source

Mechanistic Insight into the Thermochromic Emission of One‐Dimensional Platinum(II) and Palladium(II) Complex Crystals

open access: yesChemPlusChem, Volume 90, Issue 5, May 2025.
One‐dimensional Pt(II) complexes are known to exhibit significant thermochromic emissions in the crystalline state. This phenomenon offers valuable insights into the excited states of Pt(II) complexes. This review focuses on the thermochromic mechanisms of one‐dimensional Pt(II) and Pd(II) complexes from the viewpoint of the relationship between ...
Masaki Yoshida, Masako Kato
wiley   +1 more source

La gestión de la cadena de suministro y la Competitividad de la PYME Industrial en la Ciudad de México

open access: yesCiencias Administrativas Teoría y Praxis, 2019
Estudios antecedentes han señalado la importancia de la gestión de la cadena de suministro en la competitividad de las PYME, por esta razón el objetivo de esta investigación consiste en determinar si existe relación entre la gestión de la cadena de ...
María Luisa Saavedra García   +2 more
doaj  

Hacia el mejoramiento de la gestión de activos de equipos críticos en Pymes: propuesta de metodología e implementación

open access: yesTecnología en Marcha
Las Pymes son pequeñas y medianas empresas que nacen a partir de una idea de comercialización de un producto o servicio. El crecimiento de estas empresas conlleva un aumento en la complejidad de su organización.
Miguel Ángel Segura-Monge   +3 more
doaj   +1 more source

Statistical Survey of Fine‐Scale Auroral Structure at High Latitude: Evidence Consistent With Acceleration by Dissipative Non‐Linear Inertial Alfvén Waves

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract Relatively little is known about the causes of fine‐scale aurora with scale sizes of ∼1 ${\sim} 1$ km and less. We analyze images from the Auroral Structure and Kinetics (ASK) instrument, a multi‐monochromatic spectral imager located in the Norwegian High Arctic. We analyze five categories of fine‐scale aurora. The categories described in this
N. Brindley, D. Whiter, I. Gingell
wiley   +1 more source

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