Results 31 to 40 of about 35,101 (231)
Small, EarlyView.Ammonium halide salts serve as inorganic modifiers that lower the melting and glass transition temperatures of zeolitic imidazolate frameworks, enabling centimeter‐scale hybrid glasses and melt processing of otherwise unmeltable ZIF‐8. In situ imaging and pair distribution function analysis reveal salt infiltration, Zn─N bond disruption, and Zn–halide ...
Fengming Cao +7 more
wiley +1 more source
GNSS e dati geografici costituiscono la quinta infrastruttura primaria globale
GEOmedia, 2014 2014 is the year of the official start of services provided by European Galileo satellite positioning system, and even if a few years late, the expectations for the induction of a rapidly growing market are many, with expected growth more then doubled by
Renzo Carlucci
doaj +2 more sources
Beamforming analysis on a broadband antenna array for the Galileo system
, 2006 The objective of this work is to demonstrate, through simulation results, an optimized beamforming approach on an antenna array designed to operate at the Galileo frequency bands.
Heckler, Marcos Vinicio Thomas +7 more
core +1 more source
In Situ Alloying of H13 Tool Steel With TiC via PBF‐LB/M
steel research international, EarlyView.H13 tool steel is in situ alloyed with titanium carbides (TiC) in amounts up to 30 wt.%. This approach offers the advantage that the carbides melt only partially during processing, preventing excessive carbon enrichment of the steel matrix. The resulting microstructure consists of coarse, undissolved and fine, reprecipitated carbides, leading to grain ...
Oliver Bürgi +2 more
wiley +1 more source
Teaching Statistics, EarlyView.Abstract Statistical hypothesis testing (SHT) is widely employed across numerous scientific disciplines, and a clear understanding of its underlying logic is essential for the broader scientific community. Here, drawing upon both epistemological and statistical perspectives, we aim to clarify—primarily for educational purposes—the logical relationship ...
Maria Cristina Amoretti +1 more
wiley +1 more source
Galileo millimeter-level kinematic precise point positioning with ambiguity resolution
Earth, Planets and Space, 2019 On February 11, 2019, four additional Galileo satellites were put into service, approaching the completion of the European global navigation satellite system constellation.
Georgia Katsigianni +3 more
doaj +1 more source
New Challenges for European Space Industrial Policy
Global Policy, EarlyView.ABSTRACT The European space industry is globally competitive but faces challenges due to fragmented governance, reliance on commercial markets, and increased international competition. The European Union (EU) has become a major stakeholder in this sector, with a ‘fragmented institutional market’ shaped by policies, initiatives and programmes at ...
Sara Dalledonne +2 more
wiley +1 more source
Aspetti del sistema di navigazione satellitare europeo: Il progetto GALILEO ai nastri di partenza
GEOmedia, 2016 Aspetti del sistema di navigazione satellitare europeo: Il progetto GALILEO ai nastri di ...
Fabrizio Bernardini
doaj +2 more sources
Assessment of BeiDou-3 and Multi-GNSS Precise Point Positioning Performance
Sensors, 2019 With the launch of BDS-3 and Galileo new satellites, the BeiDou navigation satellite system (BDS) has developed from the regional to global system, and the Galileo constellation will consist of 26 satellites in space. Thus, BDS, GPS, GLONASS, and Galileo
Guoqiang Jiao +4 more
doaj +1 more source