Results 21 to 30 of about 1,064,383 (300)

Development and application of methods to characterize micro semi-finished products and micro components

open access: yesMATEC Web of Conferences, 2018
In the production of semi-finished products for the production of microcomponents and the components themselves, the characterization of their physical properties is of particular importance.
Köhler Bernd   +2 more
doaj   +1 more source

New Multistage Sheet-Bulk Metal Forming Process Using Oscillating Tools

open access: yesMetals, 2020
A new sheet-bulk metal forming process for the production of bulk components out of a flat sheet has been developed. Superimposed oscillation has been applied to the new process. By this means, process limits regarding better mould filling were expanded,
Bernd-Arno Behrens   +6 more
doaj   +1 more source

Gas accretion as the origin of chemical abundance gradients in distant galaxies

open access: yes, 2010
It has recently been suggested that galaxies in the early Universe can grow through the accretion of cold gas, and that this may have been the main driver of star formation and stellar mass growth. Because the cold gas is essentially primordial, it has a
A Dekel   +34 more
core   +1 more source

New Challenges to the automotive fasteners and cold formed parts in the chinese markets

open access: yesMATEC Web of Conferences, 2015
Despite of substantial cold forming related R&D, innovations and new inventions have been achieved and reported by research institutes and famous industrial organisations, many small and medium size enterprises in the third world or developing countries ...
Chen Jin Guang   +2 more
doaj   +1 more source

New Multiphase CP and DP 1000 MPa strength level grades for improved performance after hot forming [PDF]

open access: yes, 2019
Pure martensitic steels have after hot forming limited performance in terms of rest ductility which limits the application in crash relevant parts. New steel grades were designed in the EU project HOTFORM including the corresponding process routes. These
Aranguren, Iñigo   +6 more
core   +1 more source

Deuterium burning in objects forming via the core accretion scenario - Brown dwarfs or planets?

open access: yes, 2012
Aims. Our aim is to study deuterium burning in objects forming according to the core accretion scenario in the hot and cold start assumption and what minimum deuterium burning mass limit is found for these objects.
Mollière, Paul, Mordasini, Christoph
core   +1 more source

Analysis, Validation and Optimization of the Multi-Stage Sequential Wiredrawing Process of EN AW-1370 Aluminium

open access: yesMetals, 2019
For the wiredrawing of aluminium, the initial wire rod is obtained by continuous inverted casting. The raw geometry is industrially processed in a linear multi-step wiredrawing sequence to obtain a wire that is commonly used for the manufacture of ...
Óscar Rodríguez-Alabanda   +3 more
doaj   +1 more source

Star formation in early-type galaxies: the role of stellar winds and kinematics

open access: yes, 2015
Early-type galaxies (ETGs) host a hot ISM produced mainly by stellar winds, and heated by Type Ia supernovae and the thermalization of stellar motions.
Ciotti, L., Negri, A., Pellegrini, S.
core   +1 more source

On the influence of environment on star forming galaxies [PDF]

open access: yes, 2018
We use our state-of-the-art semi analytic model for GAlaxy Evolution and Assembly (GAEA), and observational measurements of nearby galaxies to study the influence of the environment on the gas content and gaseous/stellar disc sizes of star-forming ...
De Lucia, Gabriella   +6 more
core   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

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