Results 131 to 140 of about 1,736,784 (299)

Modular Generation of Alkyl Selenyl Radicals for the Synthesis of Alkyl Selenides via a Mechanochemical Approach

open access: yesAdvanced Science, EarlyView.
We present a mechanochemical, radical‐mediated hydroselenation of alkenes under ambient conditions. This method modularly generates alkyl selenyl radicals from elemental selenium and alkyl (pseudo)halides, utilizing PhSiH3 and H2O as hydrogen atom donors, with the water likely originating from the air and/or trace water present in the reagents ...
Xiaochun He   +8 more
wiley   +1 more source

Smart Optogenetics for Real‐Time Automated Control of Cardiac Electrical Activity

open access: yesAdvanced Science, EarlyView.
We are able to stop dangerous heart‐rhythm spirals before they fully form. Within about 100 ms, it pinpoints the spiral's tiny central tip (≈0.9 mm) using light‐based sensing and machine learning, then shines targeted light to shut it down. This fast, precise, closed‐loop approach detects, targets, and terminates arrhythmias in real time.
Shanliang Deng   +15 more
wiley   +1 more source

Sugar‐Armored Pesticides: Self‐Assembled System for Enhanced Foliar Adhesion and Sustained Delivery of Hydrophobic Antimicrobials Against Bacterial Diseases

open access: yesAdvanced Science, EarlyView.
This study develops a sugar‐armored, self‐assembled pesticide delivery system that enhances foliar adhesion, provides sustained release, effectively disrupts biofilms, and demonstrates superior bactericidal activity for improved disease control.
Jinghan Yang   +3 more
wiley   +1 more source

Conceptualising quality early childhood education: Learning from young children in Brazil and South Africa through creative and play‐based methods

open access: yesBritish Educational Research Journal, EarlyView., 2023
Abstract Early childhood has increasingly been acknowledged as a vital time for all children. Inclusive and quality education is part of the United Nations Sustainable Development Goals, with the further specification that all children have access to quality pre‐primary education.
Laura H. V. Wright   +8 more
wiley   +1 more source

Características del ecosistema del Río San Juan

open access: yes, 1999
Se aporta información sobre la situación del ecosistema del Río San Juan basada en datos obtenidos en campañas de investigación limnológica llevadas a efecto en 1992, 1993, 1994 y 1997 por investigadores del Centro para la Investigación en Recursos Acuáticos de Nicaragua (CIRA-UNAN).
Vammen, Katherine   +1 more
openaire   +1 more source

Reinforcement of Cathode Interface Using a Dipolar Small Molecule for Enhancing Operational Stability of Perovskite Solar Cells

open access: yesAdvanced Science, EarlyView.
We report a high‐dipole interlayer, MQPPO, that simultaneously improves efficiency and stability in perovskite solar cells. Its strong interfacial dipole enhances photovoltaic performance, while its uniform coverage and strong interaction with Ag effectively suppress AgI formation, ensuring long‐term stability under moisture and thermal stress.
Dong Hyun Lee   +11 more
wiley   +1 more source

Good governance in the entities of the social economy [PDF]

open access: yes
Entities of the Social Economy are ruled by practices of collective action and democratic participation within the framework of what is known as good governance. This is based on a set of values and principles belonging to the organisations.
Juan Briones Peñalver   +1 more
core  

Coplas del memento homo / Encina, Juan del

open access: yesCatálogo de obras medievales impresas en castellano, 2021
Alberto Alberto del Río Nogueras   +1 more
openaire   +1 more source

High‐Sensitive Mass Cytometry Metal Tags Based on Noble Metal Nanoparticles Assisting Acute Myeloid Leukemia Immune Checkpoint Profiling

open access: yesAdvanced Science, EarlyView.
ABSTRACT Mass cytometry is optimal for acute leukemia immune checkpoint profiling. However, current commercial metal‐chelating polymer (MCP) metal tags limit its sensitivity due to low metal loading capacity. We report a novel synthetic strategy employing antibody‐conjugated gold or platinum nanoparticles (AuNP/PtNP) for high‐dimensional single‐cell ...
Zhizhou Liu   +8 more
wiley   +1 more source

Artificial Intelligence Predictions in Huge Chemical Spaces: Chiroptical Properties of [6]‐helicene Family

open access: yesAdvanced Science, EarlyView.
This study shows that a local, data‐driven AI model can accurately predict diverse optical and chiroptical properties of [6]helicenes using information from close structural neighbours. Combined with genetic algorithms, it enables inverse design for tailored properties, establishing practical structure–property rules for efficient molecular discovery ...
Rafael G. Uceda   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy