Mcgowan characteristic volume

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WebCharacteristic volumes and properties of surfactants. John C. McGowan. Corresponding Author. 13 Moreton Avenue, Harpenden, Herts AL5 2EU, UK. 13 Moreton Avenue, … Web1 aug. 2011 · McGowan specific volumes can easily be corrected for buried atoms. No correction needed for buried sp 2 carbons. McGowan volumes when corrected lead to …

The use of characteristic volumes to measure cavity terms in …

WebAn equation which has been used for the estimation of solubilities of organic liquids in water has been adapted for the study of critical micelle concentrations ( CM) of surfactants. … WebMcGowan volume MgVol Calculated molar volume of the whole molecule (McGowan volume)... H-bonding is an important, but not the sole, interatomic interaction. Thus, … freeway emporium searcy

McGowan volume - Big Chemical Encyclopedia

WebThe excess molar volumes of 10-40 mol % methanol/C02 mixtures at 26°C as a function of pressure has been determined. The excess molar volumes varied with composition and … WebMcGowan volumes by using a volume-radius formula are linearly related (Rx) 1.115Rp + 0.0623, r2) 0.995). This equation is then used to calculate McGowan volumes for various … Webwide range of chemical families, so molecular weight or volume were incorporated as additional descriptors [5,6]. ... V—McGowan’s characteristic volume); Neoplastic-80—antineoplastic-like property at 80% similarity; ALOGP—log Pow calcu-lated using ALOGP algorithm; F06[C-N]—frequency of carbon-nitrogen bond at a topological … freeway emporium

イオンのMcGowan体積の決定及びvan der Waals体積との相関文 …

Determination of McGowan Volumes for Ions and ... - ResearchGate

WebAbstract. The Ostwald solubility coefficient, L of 17 volatile organic compounds (VOCs) from the gas phase into water and dilute aqueous ammonia solutions was determined by the equilibrium partitioning in closed system-solid phase micro extraction (EPICS-SPME) method at 303 K and at 0-2.5 mol dm (-3) ammonia concentrations. WebThe McGowan s characteristic volume is frequently used as a measure of the cavity term in —> linear solvation energy relationships. Here Rs is the excess molar refraction of the solute over that of an alkane with the same characteristic volume (Abraham et al. 1990) … freeway ends meaningWebThe McGowan volume has been widely used for the analysis of physicochemical and biochemical properties in chemistry and drug industry. Because McGowan volumes are … fashion express wallet clutch

"Web29 mei 2007 · The McGowan characteristic volume V X corresponds to the volume of 1 mol of the compound at T = 0 K (when vibrations and rotations are "frozen") [64]. " - Mcgowan characteristic volume

Mcgowan characteristic volume

Determination of McGowan volumes for ions and correlation with ... - PubMed

Web1 apr. 1987 · In the correlation of reversed-phase liquid chromatography capacity factors through the equation, the use of McGowans characteristic volume, V x , which can be … Web4 feb. 2010 · V - McGowan characteristic volume . Thank you. These descriptors are included in the ABSOLV module which is now part of ACDlabs . Thank you. User 851ac690a0. 02-04-2010 23:47:11. Hi, Abraham's descriptors are not implemeted in …

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WebMcGowan's characteristic volume is defined by the sum of atomic volume parameters corrected by a factor for the number of atoms. 35 Another size descriptor is the molar … WebCorresponding Author. John C. McGowan. 13 Moreton Avenue, Harpenden, Herts AL5 2EU, UK. 13 Moreton Avenue, Harpenden, Herts AL5 2EU, UK===

WebThis equation is based on Abraham s solvation equation which uses five molecular descriptors excess molar refraction (F), solute polarity /polarizability (S), McGowan characteristic volume (V), solute overall acidity (A) and basicity (B). The steric ( size/shape) descriptors E, S and V have a positive effect on oral absorption, while the ...

Web1 aug. 2011 · V is the McGowan characteristic volume [(dm 3 mol −1)/1 0 0], calculated from atom increments (Abraham and McGowan, 1987) (for fluorine, an updated atom increment was recently published (Goss et al., 2006). L is the logarithm of the experimentally determined gas to n-hexadecane partition coefficient at 298 K. Web6 dec. 2014 · Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.. Visit Stack Exchange

Web25 okt. 2024 · In the fed intestinal state, ionized (%), McGowan volume (V), excess molar refraction (E), basicity (Bo) and polarizability (S) were the main individual drug-related contributing factors for changes between drug solubility in pediatric simulated media compared to the adult simulated medium.

Webthat McGowan characteristic volumes are so well correlated with Leahy’s intrinsic volume that they could be used as an alternative (Vl) 0.597 + 0.6823Vx, n ) 209, r ) 0.998, freeway electronicsWeband basicity, V is the McGowan characteristic volume 27 in units of (cm3 mol–1)/100, and L is the logarithm of the gas to hexadecane partition coefficient at 298 K. The use of eqn. (1) and eqn. (2) in the determination of descriptors has been described in detail, 10, 11 and numerous examples are available. 28-32 Equations on the freeway englisch buch pdfWeb2 okt. 2024 · The first four parameters all have negative coefficients where E is the solute excess molar refractivity-the measured liquid or gas molar refraction at 20 °C minus that of a hypothetical alkane of identical volume-in units of (cm 3 /mol)/10, S is the solute dipolarity/polarizability, A and B are the overall or summation hydrogen bond acidity and … fashion extra catalogueWeb文献「イオンのMcGowan体積の決定及びvan der Waals体積との相関」の詳細情報です。J-GLOBAL 科学技術総合リンクセンターは研究者、文献、特許などの情報をつなぐことで … fashion extensionsWebThe use of characteristic volumes to measure cavity terms in reversed phase liquid chromatography. M. Abraham, J. C. Mcgowan. Published 1 April 1987. Geology. … fashion express black dressesWeb1 nov. 2003 · The McGowan volume has been widely used for the analysis of physicochemical and biochemical properties in chemistry and drug industry. Because … freeway englisch buchWebDetermination of McGowan volumes for ions and correlation with van der Waals volumes J Chem Inf Comput Sci. 2003 Nov-Dec;43 (6):1848-54. doi: 10.1021/ci0341114. Authors Yuan H Zhao 1 , Michael H Abraham , Andreas M Zissimos Affiliation 1 Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK. PMID: 14632432 fashion express stores