Results 141 to 150 of about 2,065,372 (385)

Credit and Unemployment: Do Institutions Matter? [PDF]

open access: yes
Kreditgeschäft; Unternehmensfinanzierung; Arbeitslosigkeit; Institutionelle Infrastruktur ...
Anne-Gael Vaubourg, Donatella Gatti
core  

Green Hydrogen Production via Water Splitting Using SrFe0.9Mo0.1O3−δ Perovskite as a Catalyst

open access: yesSmall Structures, EarlyView.
The nonstoichiometric perovskite SrFe0.9$_{0.9}$Mo0.1$_{0.1}$O3−δ$_{3 - \delta}$ stably produces molecular hydrogen and oxygen by dissociation of water at 800 °C. Quadrupole mass spectrometry unambiguously confirms the generation of molecular hydrogen.
Gloria Anemone   +6 more
wiley   +1 more source

Pinturas en el arte megalítico atlántico: Barnenez

open access: yesTrabajos de Prehistoria, 2012
La técnica ha venido estableciéndose en el arte megalítico europeo como una categoría cultural. Solo la Península Ibérica disponía de dólmenes pintados.
Primitiva Bueno Ramírez   +7 more
doaj   +1 more source

Europa Neutral Torus Confirmation and Characterization Based on Observations and Modeling

open access: yesAstrophysical Journal, 2019
The confirmation and constraints of a Europa-generated neutral torus are presented based on available observations and computational modeling of relevant source species.
H. Smith   +4 more
semanticscholar   +1 more source

The 2010 Volcanic Ash Cloud and Its Financial Impact on the European Airline Industry [PDF]

open access: yes
Naturkatastrophe; Vulkan; Luftverunreinigung; Luftfahrtindustrie; Soziale Kosten; Island ...
Francesca Hansstein   +2 more
core  

Europa, Another Water Moon? [PDF]

open access: yes, 1999
Comparing Europa to Earth's size and oceans, this resource tells the story of the Galileo spacecraft's exploration of Europa in the late 1990's, and explains why scientists believe there may be an ocean of water underneath Europa's icy crust. Educational

core  

Identification of Missing Knowledge in MBSE System Models Using Graph‐Based Machine Learning

open access: yesSystems Engineering, EarlyView.
ABSTRACT The design and development of complex aerospace systems pose significant challenges due to their growing complexity. Iterative design processes, guided by formal specifications, strive to refine initially vague characteristics through multiple stages.
Esma Karagoz   +2 more
wiley   +1 more source

Check-list of European Orthoptera [PDF]

open access: yes, 2010
List of all 974 recognized species of Ensifera (Tettigonioidea: 458, Rhaphidophoroidea: 44, Grylloidea: 91) and Caelifera (Tetrigoidea: 12, Tridactyloidea: 6, Acridoidea: 363) in Europe including information about their distribution.Aufstellung aller 974
Frantsevich, Leonid   +6 more
core  

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