Results 261 to 270 of about 5,995,934 (373)

Climate Variability and International Migration: The Importance of the Agricultural Linkage

open access: yesSocial Science Research Network, 2016
Ruohong Cai   +3 more
semanticscholar   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

Light‐Activated Micromotors in Air Propelled by Thermal Convection

open access: yesAdvanced Materials, EarlyView.
Near‐infrared‐driven micromotors in air can overcome gravity and generate convective motion by a light‐induced thermal mechanism driven by a temperature gradient in the air caused by the interaction of the gold nanoparticles present on the surface of ZnO and NIR irradiation.
Pedro Mena‐Giraldo   +6 more
wiley   +1 more source

Internal Migration

open access: yes, 2016
Darren P. Smith   +2 more
openaire   +3 more sources

Transient Charging of Mixed Ionic‐Electronic Conductors by Anomalous Diffusion

open access: yesAdvanced Materials, EarlyView.
This article explores charge transport in mixed ionic‐electronic conductors (MIECs) through electrochemical impedance spectroscopy and transient current analysis. Focusing on PEDOT:PSS, WO3, and n‐doped PBDF, it uncovers the impact of anomalous diffusion via fractional modeling. The study reveals key correlations that deepen understanding and guide the
Heyi Zhang   +9 more
wiley   +1 more source

Recent trends in international migration - Poland 2002 [PDF]

open access: yes, 2002
Kepinska, Ewa, Okolski, Marek
core  

Home - About - Disclaimer - Privacy