Results 11 to 20 of about 265,700 (156)

MHD Remote Numerical Simulations: Evolution of Coronal Mass Ejections [PDF]

open access: yes, 2008
Coronal mass ejections (CMEs) are solar eruptions into interplanetary space of as much as a few billion tons of plasma, with embedded magnetic fields from the Sun's corona.
A. R. González-Ponce   +4 more
core   +1 more source

Doryctopambolus nunes & Zaldívar-Riverón (Braconidae), a new Neotropical doryctine wasp genus with propodeal spines [PDF]

open access: yes, 2012
The new Neotropical doryctine genus Doryctopambolus gen. n. is erected to contain D. pilcomayensis (van Achterberg & Braet, 2004), comb. n., which was previously placed within Pambolus (Pambolinae), as well as three new species, D. clebschi sp.
Briceño, Rosa   +6 more
core   +2 more sources

Current Tracking Adaptive Control of Brushless DC Motors

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García   +3 more
wiley   +1 more source

Tailoring Microstructure in Copper‐Based Conductive Metal–Organic Frameworks for Enhanced Chemiresistive Sensing and Uptake of Sulfur Dioxide

open access: yesAdvanced Functional Materials, EarlyView.
Precursor‐ and solvent‐mediated synthesis yields four Cu3(HHTP)2 morphologies with distinct physicochemical, sorption, and sensing properties toward SO2. Uptake capacities correlate with BET surface area, while sensing performance scales with particle aspect ratio.
Patrick Damacet   +5 more
wiley   +1 more source

Collective states from random interactions [PDF]

open access: yes, 2000
The anharmonic vibrator and rotor regions in nuclei are investigated in the framework of the interacting boson model using an ensemble of random one- and two-body interactions.
Bijker, R., Frank, A.
core   +3 more sources

4D Printing of Multimaterial Flexible Magneto‐Active Polymers

open access: yesAdvanced Materials Technologies, EarlyView.
Magneto‐active polymers are 3D‐printed with tunable mechanical and magnetic properties using both superparamagnetic and hard ferromagnetic fillers. Nano‐CT imaging reveals the spatial distribution of particles within the matrix. Programmable magnetization patterns and soft, flexible architectures enable responsive actuation, offering exciting ...
Naji Tarabay   +6 more
wiley   +1 more source

An Accessible Microfluidic Platform for the Generation of Polarized Brain Organoids

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents an accessible double‐gradient microfluidic device that enables controlled morphogen delivery and spatially polarized differentiation in brain organoids. By integrating a pump‐free design and stable fabrication method, the platform generates dorsal–ventral neuronal asymmetry, offering a reproducible and versatile approach to model ...
Daniel Pérez‐Calixto   +6 more
wiley   +1 more source

The Relation between the Mandelstam and the Cayley-Hamilton Identities

open access: yes, 1993
Starting from the characteristic polynomial for ordinary matrices we give a combinatorial deduction of the Mandelstam identities and viceversa, thus showing that the two sets of relations are equivalent.
Berenstein, D. E., Urrutia, L. F.
core   +1 more source

Solution‐Processed Spin‐Polarized Light‐Emitting Diodes of Colloidal Quantum Wells and Magnetic Nanoparticles

open access: yesAdvanced Optical Materials, EarlyView.
All‐solution‐processed spin‐LEDs based on colloidal Fe3O4 nanoparticles and CdSe/CdZnS core/shell CQWs that allows for polarization modulation of electroluminescence are fabricated. With these devices, electrical injection of spin‐polarized carriers from the Fe3O4 nanoparticle layer into the CdSe/CdZnS CQWs is demonstrated, realizing circularly ...
Savas Delikanli   +14 more
wiley   +1 more source

Imaginando escenarios de hojas, plumas y festivales : el Festival del Libro Infantil y Juvenil UNAM [PDF]

open access: yes, 2013
1 archivo PDF (9 páginas)La concepción del Festival del Libro Infantil y Juvenil UNAM, en el Instituto de Investigaciones Filológicas, sus diplomados, las experiencias y reflexiones y los objetivos a futuro son las líneas temáticas de este testimonio.
Polo López, Aarón
core  

Home - About - Disclaimer - Privacy