Results 171 to 180 of about 553,337 (333)

Linking Geometry, Algebra and Calculus with GeoGebra

open access: yes, 2012
GeoGebra is a free, open-source, and multi-platform software that combines dynamic geometry, algebra and calculus in one easy-to-use package. Students from middle-school to university can use it in classrooms and at home. In this workshop, we will introduce the features of GeoGebra with a special focus on not very common applications of a dynamic ...
openaire   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

battery_xct_workflows: extracting quality metrics from X-ray computed tomography of Li-ion cells. [PDF]

open access: yesMethodsX
Jones MP   +7 more
europepmc   +1 more source

The impact of N,N′-ditopic ligand length and geometry on the structures of zinc-based mixed-linker metal–organic frameworks

open access: hybrid, 2017
Andrew D. Burrows   +7 more
openalex   +2 more sources

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu   +8 more
wiley   +1 more source

Electronically switchable dual-band capsule antenna for wireless endoscopic applications. [PDF]

open access: yesSci Rep
Gogosh N   +5 more
europepmc   +1 more source

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin   +5 more
wiley   +1 more source

Finite geometry and permutation groups: some polynomial links

open access: yesRendiconti di Matematica e delle Sue Applicazioni, 2006
Any set of points in a finite projective space PG(n, q) defines a matroid which is representable over GF(q). The Tutte polynomial of the matroid is a two-variable polynomial which includes a lot of numerical information about the configuration of points.
openaire   +1 more source

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