Results 161 to 170 of about 1,366,140 (189)

DeepReI: Deep learning-based gas chromatographic retention index predictor

Analytica Chimica Acta, 2021
Retention index in gas chromatographic analyses is an essential tool for appropriate analyte identification. Currently, many libraries providing retention indices for a huge number of compounds on distinct stationary phase chemistries are available. However, situation could be complicated in the case of unknown unknowns not present in such libraries ...
Tomáš, Vrzal, Michaela, Malečková, Jana, Olšovská   +2 more
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Indexing and Normalizing Natural Gas Endowment

SPE Latin American and Caribbean Petroleum Engineering Conference, 2010
Abstract A novel method is presented for indexing and normalizing natural gas endowment. The approach is demonstrated with data from Latin America and Caribbean (LAC) countries. Endowment, as defined by the USGS, refers to the sum of known volumes of hydrocarbons (cumulative production plus remaining reserves) and undiscovered volumes.
R. F. Aguilera, R. Aguilera
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Method of determining gas-transfer index

Soviet Mining Science, 1987
Determining the gas-transfer index of coal is investigated on the basis of the operation of the PGO-1 laboratory instrument. Its operating principles and construction are briefly described as is the method of measurement of the gas-transfer index. This method of measurement is determined in three successive operations, through use of a vacuum pump to ...
A. T. Airuni, V. A. Bobin
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Vector-based deterioration index for gas turbine gas-path prognostics modeling framework

Energy, 2021
Abstract This study presents a conceptual modeling framework for gas path prognostics of the gas turbine, to improve condition monitoring knowledge. The structure contains main concepts related to power plant performance degradation, reliability degradation, and the relationships between these concepts.
Mehrdad Kiaee, A.M. Tousi
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Refractive index of a vibrationally excited gas

Soviet Journal of Quantum Electronics, 1984
It has been established that the contribution made by vibrational excitation may be appreciable, particularly in the case of molecular polarizabilities, and should be taken into account when determining the temperature and density in nonequilibrium gases. The results are calculated for important molecules such as CO, CO2 and SF6.
A I Osipov, Vladislav Ya Panchenko, A A Filippov   +2 more
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Retention index in temperature-programmed gas chromatography

Journal of Chromatography A, 1999
A persistent feature in the development of temperature-programmed gas chromatography (TPGC) has been the search of a retention index IT, defined as a relationship between the retention of the analyte and two members of an homologous series enclosing it. The motivation is to find for TPGC a parameter IT resembling the properties of the isothermal Kovats
F.R. Gonzalez, A.M. Nardillo
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Index fund portfolio selection by using GA

Proceedings Fourth International Conference on Computational Intelligence and Multimedia Applications. ICCIMA 2001, 2002
It is well known that an index fund portfolio is useful for the risk hedge of investment. The portfolio consists of M-company (called brand) stocks and its price as a function of time traces the stock price index in the market. From a practical viewpoint, it is desired that M-company is smaller and the correlation between the portfolio price and stock ...
Y. Orito, G. Yamazaki
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Indexing Gas Transfer in Self‐Aerated Flows

Journal of Environmental Engineering, 1990
An indexing relationship, used to index and directly compare measurements, is developed for liquid phase‐controlled gas transfer in self‐aerated flows from theoretical considerations. The indexing relation is shown to describe temperature effects as well as existing equations that use fitted coefficients.
John S. Gulliver, John R. Thene, Alan J. Rindels   +2 more
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Refractive index of rare-gas liquids: First-principles calculation

Physical Review B, 1988
A self-consistent local-density scheme is used to compute the polarizability of rare-gas atoms in the liquid phase at the triple point. First-principles total-energy calculations are performed for the crystal, and Lennard-Jones parameters for interatomic potentials are deduced which are in reasonable agreement with empirical values.
, Johnson, , Subbaswamy, , Senatore
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Index-Aware MOR for Gas Transport Networks

2019
We extend the index-aware model order reduction method (IMOR) to differential-algebraic equations (DAEs) arising from gas transport networks, which have a tractability index of one or two. Applying model order reduction (MOR) techniques to DAEs has to be done carefully and the techniques, in particular for nonlinear systems, can not handle arbitrary ...
Banagaaya, N., Grundel, S., Benner, P. ; https://orcid.org/0000-0003-3362-4103   +2 more
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