Results 71 to 80 of about 52,265 (308)

Transforming the energy system - the evolution of the German technological system for solar cells [PDF]

open access: yes
To improve our understanding of processes involved in the formation and growth of new technological systems in the energy sector and to identify the associated key challenges for policy makers managing the transformation process, we examine the ...
Björn A. Andersson   +2 more
core  

Effects of Initial Conditions on Magnetic Reconnection in a Solar Transient

open access: yes, 2022
Coronal magnetic field extrapolations are necessary to understand the magnetic field morphology of the source region in solar coronal transients. The extrapolation models are broadly classified into nonforce-free and force-free, depending on whether the ...
Agarwal, Satyam   +5 more
core   +1 more source

Oxygen Isotope Constraints on the Importance of Photochemical Processing in Protoplanetary Disks

open access: yesThe Astronomical Journal
Observations have revealed evidence of photochemical processing in protoplanetary disks. This processing occurs in the photon-dominated layer, the optically thin regions of the disk high above the disk midplane. It remains unclear, however, how much this
Fred J. Ciesla   +3 more
doaj   +1 more source

Atomic Layer Deposition Processes: Versatile Platforms for Engineering ZnO‐Chitosan Biointerfaces

open access: yesAdvanced Healthcare Materials, EarlyView.
Vapour phase metalation (VPM), multiplied pulsed vapour phase infiltration (MPI), and O2 plasma‑enhanced atomic layer deposition (PEALD) tailor Zn–chitosan (Zn‑CS) films. PEALD improves wettability and biocompatibility. MPI enhances semiconductor behavior. Antiseptic selectivity: VPM → E. coli; MPI → H. pylori.
Mabel Moreno   +17 more
wiley   +1 more source

Development and application of a global magnetic field evolution model for the solar corona

open access: yes, 2009
Magnetic fields are fundamental to the structure and dynamics of the Sun’s corona. Observations show them to be locally complex, with highly sheared and twisted fields visible in solar filaments/prominences.
Yeates, Anthony Robinson
core  

SYNTHESIS OF p-PHENYLENE VINYLENE DENDRONS & THEIR FUNCTIONALIZATION AND TESTING IN DYE-SENSITIZED SOLAR CELLS [PDF]

open access: yes, 2013
The novel synthesis of p-phenylene vinylene dendrons utilizing a Horner-Wadsworth-Emmons based approach is described. The extended, linear π conjugation along all the dendron branches, a feature absent in most dendrimers used for light harvesting, was ...
Bell, Peter
core  

Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

open access: yesAdvanced Materials, EarlyView.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno   +16 more
wiley   +1 more source

Optimized Intelligent Dual-Axis Solar Tracking System for Maximum Energy Efficiency

open access: yesiRASD Journal of Energy & Environment
The main aim of this paper is to design dual-axis auto tracking system for the utilization of solar energy to maximize power efficiency and optimizing solar radiation capture.
Shoukat Ali Noonari   +5 more
doaj   +1 more source

Long Term Evolution of the Solar System [PDF]

open access: yesSymposium - International Astronomical Union, 1992
The mapping method of Wisdom (1982) has been generalized to encompass all n-body problems with a dominant central mass (Wisdom and Holman, 1991). The new mapping method is presented as well as a number of initial applications. These include billion year integrations of the outer planets, a number of 100 million year integrations of the whole solar ...
openaire   +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

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