Results 51 to 60 of about 154 (132)

Perspectives for Thermochemical Conversions of Lignocellulosic Biomass

Small, Volume 20, Issue 39, September 26, 2024.
The status of the thermochemical conversion processes of lignocellulosic biomass within the areas of research and development is presented and discussed. A lot of insight and understanding related to the thermochemical conversion of lignocellulosic biomass is already gained, however, there are still a number of challenges and obstacles to be overcome ...
Michael Stöcker
wiley   +1 more source

Processing of resid–VGO mixtures in FCC: Laboratory approach

Applied Catalysis A: General, 2009
Fil: Devard, Alejandra Veronica. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Santa Fe. Instituto de Investigaciones en Catalisis y Petroquimica "Ing. Jose Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catalisis y Petroquimica "Ing.
Devard, Alejandra Veronica, de la Puente, Gabriela, Passamonti, Francisco Javier, Sedran, Ulises Anselmo   +3 more
openaire   +2 more sources

Rethinking operational VGOS observations

The VLBI Global Observing System (VGOS) was created to meet the ambitious requirements set by the Global Geodetic Observing System (GGOS). Its primary objective is achieving millimeter-level precision while maintaining continuous 24/7 observations. Currently, both aims remain unfulfilled.
Matthias Schartner, Bill Petrachenko, Patrick Charlot, Minghui Xu, Arnaud Collioud, Hana Krasna, Soja Benedikt   +6 more
openaire   +2 more sources

Probing atmospheric turbulence with VLBI residuals: when theory meets observations

Earth, Planets and Space
Geodetic very long baseline interferometry (VLBI) is affected by stochastic fluctuations in atmospheric water vapor, which degrade delay measurements and limit the precision of derived geodetic parameters.
Gaël Kermarrec, Matthias Schartner
doaj   +1 more source

Optimal distribution of VLBI transmitters in the Galileo space segment for frame ties. [PDF]

Earth Planets Space, 2023
Wolf H, Böhm J.
europepmc   +1 more source

The Australian mixed-mode observing program. [PDF]

J Geod, 2022
McCallum L, Chin Chuan L, Krásná H, McCallum J, Böhm J, McCarthy T, Gruber J, Schartner M, Quick J, Rogers A.   +9 more
europepmc   +1 more source

A Comparative Survey of Adaptive Codec Solutions for VoIP over Multirate WLANs: A Capacity versus Quality Performance Trade-Off

EURASIP Journal on Wireless Communications and Networking, 2011
In multi-rate WLANs, users can suffer transmission rate changes due to the link adaptation mechanism. This results in a variable capacity channel, which is very hostile for VoIP and can cause serious quality of service (QoS) degradation in all active ...
Sfairopoulou A, Bellalta B, Macian C, Oliver M   +3 more
doaj  

Probing a southern hemisphere VLBI Intensive baseline configuration for UT1 determination. [PDF]

Earth Planets Space, 2022
Böhm S, Böhm J, Gruber J, Kern L, McCallum J, McCallum L, McCarthy T, Quick J, Schartner M.   +8 more
europepmc   +1 more source

VLBI measurement of the vector baseline between geodetic antennas at Kokee Park Geophysical Observatory, Hawaii. [PDF]

J Geod, 2021
Niell AE, Barrett JP, Cappallo RJ, Corey BE, Elosegui P, Mondal D, Rajagopalan G, Ruszczyk CA, Titus MA.   +8 more
europepmc   +1 more source

Short-baseline interferometry local-tie experiments at the Onsala Space Observatory. [PDF]

J Geod, 2021
Varenius E, Haas R, Nilsson T.
europepmc   +1 more source