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Multireference R12 Coupled Cluster Theory
2010In order to account for static electron correlation, the explicitly correlated coupled cluster (CC) theory based on the R12 Ansatz is formulated with respect to a multi-determinantal reference using the Brillouin – Wigner (BW) approach. Though the latter avoids appearance of the intruder states, one pays for this desired feature by the loss of size ...
Stanislav Kedžuch +3 more
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Towards Universal R12 Consistent Basis Sets
Collection of Czechoslovak Chemical Communications, 2003Using H- and H2 as examples, it is demonstrated that parameters of the one-electron basis sets optimized for explicitly correlated R12 calculations are quite different from those developed for conventional calculations that utilize a usual configuration interaction expansion for the wavefunction.
Jozef Noga, Pierre Valiron
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Metastable flow of R12 through capillary tubes
International Journal of Refrigeration, 1990Abstract The metastable flow phenomenon of R12 through two capillary tubes 0.66 and 1.17 mm i.d. and 1.5 m in length was investigated experimentally. The effects of the diameter of the capillary tube, the back pressure, the mass flow-rate and the inlet sub-cooling of the refrigerant on the delay of vaporization of the refrigerant inside the capillary
null Rui-Yang Li +3 more
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New fluids as substitute refrigerants for R12
Solar Energy Materials and Solar Cells, 1997Abstract The aim of the present study is to suggest two new fluids as alternatives of R12 in a vapour compression cycle. These fluids are the methyl trifluoromethyl ether (E143a) and the hexafluorocyclopropane (C216), which belong to halogenated derivatives of dimethyl ether and cyclopropane, respectively.
T. Rachidi +3 more
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Replacement of R12 in Refrigeration Systems
1993Three aspects of work relating to the replacement of R12 refrigeration and heat pump applications. In the first, the use of non-azeotropic fluid mixtures in a mixture cascade system is discussed and both theoretical and experimental results are presented.
R. Camporese +4 more
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PR-000-21COMP-R12 Artificial Intelligence Compendium
2021The PRCI Technical Committees have completed multiple research projects that used artificial intelligence techniques; this is a summary of that work. Since not all studies sponsored by other industry groups (e.g., API, EPRG, APIA, etc.) or by individual pipelines companies are not included, this report does not represent a review of the topic in the ...
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The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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Handreichung: Satzung der Ethikkommission (R12)
Handreichung: Satzung der Ethikkommission Handreichung R12 des FORTH-BW Forschungsdatenmanagement-Workflows Das Verbundvorhaben FORTH-BW (Entwicklung und Implementierung eines bedarfsgerechten Forschungsdatenmanagements an HAW in Baden-Württemberg) der Hochschule für Wirtschaft und Umwelt Nürtingen-Geislingen, der Hochschule Reutlingen, der HTWG ...openaire +1 more source
Exploring ISBSG R12 Dataset Using Multi-data Analytics
2019This paper presents an exploratory study that applies three data analysis techniques: statistical analysis, data clustering, and visualization conducted to the ISBSG R12 data set. Both SPSS and RapidMiner are used to conduct the analysis. While statistical analysis main advantage is the summarization of data, the overall behavior of the data is lost ...
Ghazi Alkhatib +2 more
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