Results 61 to 70 of about 16,858,520 (353)

Gas-Phase Mass-Transfer Resistances at Polymeric Electrolyte Membrane Fuel Cells Electrodes: Theoretical Analysis on the Effectiveness of Interdigitated and Serpentine Flow Arrangements

open access: yesEnergies, 2016
Mass transfer phenomena in polymeric electrolyte membrane fuel cells (PEMFC) electrodes has already been analyzed in terms of the interactions between diffusive and forced flows.
Elisabetta Arato   +3 more
doaj   +1 more source

ELABORATION AND APPLICATION OF THE FEDERAL PRODUCT CATALOG FOR FEDERAL STATE NEEDS FOR THE PURPOSE OF EFFECTIVE RESOURCE SUPPLY IN THE SYSTEM OF THE EMERCOM OF RUSSIA [PDF]

open access: yesАктуальные вопросы пожарной безопасности, 2020
The article deals with the issues of public administration efficiency related with the saving of the state budget as well as formation of conditions for increasing the competitiveness of fire-technical and emergency-rescue products.
Sergey V. Studenov   +4 more
doaj   +1 more source

The Number of Therapeutic Sessions in Logopedic Care: A Description and Analysis

open access: yesFolia Phoniatrica et Logopaedica, 2000
The aim of this study was (i) to describe the number of therapeutic sessions in logopedic care in the Netherlands and (ii) to analyse which factors determine the number of sessions. An analysis was performed on a data set of 517 patients who received logopedic treatment.
Emmy M. Sluijs   +4 more
openaire   +4 more sources

Number Restrictions on Transitive Roles in Description Logics with Nominals [PDF]

open access: yesProceedings of the AAAI Conference on Artificial Intelligence, 2017
We study description logics (DLs) supporting number restrictions on transitive roles. We first take a look at SOQ and SON with binary and unary coding of numbers, and provide algorithms for the satisfiability problem and tight complexity bounds ranging from EXPTIME to NEXPTIME.
Gutierrez Basulto, Victor   +2 more
openaire   +1 more source

Network topology drives population temporal variability in experimental habitat networks

open access: yesPopulation Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu   +3 more
wiley   +1 more source

Experimental investigation of the freely cooling granular gas [PDF]

open access: yes, 2008
Using diamagnetically levitated particles we investigate the dynamics of the freely cooling granular gas. At early times we find good agreement with Haff's law, where the time scale for particle collisions can be determined from independent measurements.
Aegerter, C. M.   +3 more
core   +1 more source

A quantum field theoretic description of linking numbers and their generalization [PDF]

open access: yesCommunications in Mathematical Physics, 1990
It is shown that the linking number of two surfaces of dimensionp andn−p−1 in ann dimensional manifold has a natural description in terms of the two-point funciton of a simple topological field theory. The two-point function of a more general theory (whose partition function yields the Ray-Singer torsion) provides a definition for a generalized linking
Horowitz, Gary T., Srednicki, Mark
openaire   +3 more sources

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

open access: yesPopulation Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Description and evaluation of the Model for Ozone and Related chemical Tracers, version 4 (MOZART-4)

open access: yes, 2009
. The Model for Ozone and Related chemical Tracers, version 4 (MOZART-4) is an offline global chemical transport model particularly suited for studies of the troposphere.
L. Emmons   +15 more
semanticscholar   +1 more source

From integrative taxonomy to species description: one step beyond.

open access: yesSystematic Biology, 2015
Integrative taxonomy was formally introduced in 2005 as a comprehensive framework to delimit and describe taxa by integrating information from different types of data and methodologies (Dayrat 2005; Will et al. 2005).
Eric Pante   +2 more
semanticscholar   +1 more source

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