Results 21 to 30 of about 78,974 (147)

La congestión vial: ¿problema o solución? [PDF]

, 2014
Actualmente toda política de movilidad tiene que contemplar y tener como objetivo principal la consecución de tres aspectos fundamentales, presentes todos ellos en el marco legal de nuestro país: el cumplimiento del Protocolo de Kioto, la protección de ...
Navazo, Màrius
core   +1 more source

Análisis y rediseño vial de la intersección entre la avenida Nicolás Ayllón y la calle La Minería, distrito de Santa Anita [PDF]

, 2023
Cada día millones de limeños se desplazan para poder realizar sus actividades cotidianas, como ir al trabajo, al colegio, a la universidad, etc. La congestión vehicular se ha convertido en parte de sus vidas.
Flores Ccolque, Ronaldo, Gamarra Tupac Yupanqui, Alvaro Armando   +1 more
core   +1 more source

Disentangling Polaron Formation Pathways in Y6 by Probing Noninteracting and Interacting Chromophores via Transient Absorption Spectroscopy

Advanced Materials, EarlyView.
The central role of both electronically interacting and noninteracting chromophores in the photogeneration of charges has been unambiguously identified by ultrafast pump‐probe spectroscopy in thin films of the prototypical non‐fullerene acceptor Y6. Onsager‐like autoionization from higher‐energy excitations on Y6 aggregates is found to control polaron ...
Daniel Kroh, Xinyue Xu, Trevor A. Smith, Anna Köhler   +3 more
wiley   +1 more source

Direct Access to Chiral Piperidines by Enantioselective HAT‐Initiated C(sp3)─H Oxidation

Angewandte Chemie, Volume 138, Issue 44, 26 October 2026.
The direct desymmetrization of piperidines is achieved through manganese‐catalyzed enantioselective α‐C(sp3)─H oxidation with hydrogen peroxide, affording versatile chiral N,O‐acetals in good yields and with high enantio‐ and diastereoselectivity. These intermediates provide access to diverse functionalized piperidines with retention of chirality ...
Sethuraman Muthuramalingam, Josep M. Luis, Arnau Call, Quentin Lefebvre, Matthew S. Sigman, Miquel Costas   +5 more
wiley   +2 more sources

Dual pKa Lipid Nanoparticles for Lung‐tropic mRNA Delivery and pH‐Programmed Endosomal Escape

Advanced Science, EarlyView.
Lipid nanoparticles’ bottleneck lies in low endosomal escape efficiency and liver‐dominant delivery after intravenous administration. To overcome these limitations, we present a stepwise pH‐programmed lipid nanoparticle system enabled by our newly synthesized ionizable lipid.
Seong Gi Lim, Minju Lee, Yiming Wang, Eunjin Choi, Ji Sun Park, Kyungmin Park, Hayoung Jeon, Donghyun Kim, Donghyun Lee, Yeeun Lee, Kee‐Pyo Kim, Eunha Kim, Heebeom Koo   +12 more
wiley   +1 more source

Componentes Esenciales de una Unidad Técnica de Gestión Vial en el Ámbito Municipal en Costa Rica [PDF]

, 2012
Un sistema de gestión de infraestructura vial consiste en los procesos para administrar la infraestructura vial en una localidad, región o macroregión. Es el conjunto de operaciones que tiene como objetivo conservar y mejorar por un período de tiempo las
Allen Monge, Jaime
core  

Nonlinear Quantum Effects Drive Grotthuss Proton Conduction in Structured Electrolytes Based on Deep Eutectic Solvents

Advanced Science, EarlyView.
We demonstrate that the inverse relationship between viscosity and conductivity in structured electrolytes can be circumvented by leveraging their hydrogen bonding networks for Grotthuss proton transport. Using a mixture of imidazole and levulinic acid, we show that the existence of extended hydrogen‐bonded chains that can rapidly reorient result in ...
Benworth B. Hansen, Michael S. Chen, Giselle de A. L. e Souza, Kaylie Glynn, Alan Robledo, Emilia Pelegano‐Titmuss, Katherine Hightower, Miguel Muñoz, Rathiesh Pandian, Clemens Burda, Aikaterini Sanida, Mark Dadmun, Burcu E. Gurkan, Steve G. Greenbaum, Mark E. Tuckerman, Joshua R. Sangoro   +15 more
wiley   +1 more source

Determinación de patrones de evolución de la congestión vial usando técnicas de minería de datos espacial

, 2020
Road congestion on urban roads has two categories: Recurrent congestion (CR) and non-recurrent congestion (NRC), The NRC is irregular, which means it can appear at any time and anywhere, and is usually caused by traffic accidents , damage to the road ...
Robles Mondragón, Alexander
core   +1 more source

Propuesta de reformas para mejorar la movilidad, accesibilidad y seguridad vial. Caso: intersección Av. Canadá con Paseo de La República [PDF]

, 2023
En Lima Metropolitana, la congestión vehicular y los accidentes de tránsito son los principales problemas de la ciudad. Esto debido a las largas colas generadas por el transporte público, los constantes accidentes en los que se ven envueltos y el mal ...
Ferré Quispe, Diego Victor José, Flores Valencia, Rodrigo Manuel   +1 more
core  

Redox‐Associated Renal and Male Reproductive Alterations Following Dexamethasone Exposure in Male Rats: Histopathological and Spermatological Evaluations

Journal of Applied Toxicology, EarlyView.
ABSTRACT Dexamethasone (DEX) is widely used in clinical practice, although it may also cause oxidative stress–related damage in different tissues, including the kidney and male reproductive system. This study investigated DEX‐induced renal and reproductive injury in rats and evaluated the modulatory effect of reduced glutathione on DEX‐associated redox
Caner Öztürk, Neşe Hayat Aksoy, Erkan Özkan, Ayşe Ikinci Keleş, Ahmet Karabulut   +4 more
wiley   +1 more source