نتایج جستجو برای: liquids

تعداد نتایج: 21511  

Journal: :Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques 2013
Alison Haywood Beverley D Glass

Although the world's population is ageing and as a result of this an increasing number of patients are experiencing difficulty in swallowing, there remains a lack of commercially available oral liquids for both these older and paediatric patients. This presents a problem to health care professionals, especially the pharmacist in practice, who is often required to provide a solution for these pa...

2017
Douglas R. Macfarlane Naoki Tachikawa Maria Forsyth Jennifer M. Pringle Patrick C. Howlett Gloria D. Elliott James H. Davis Masayoshi Watanabe Patrice Simon C. Austen Angell Douglas R. MacFarlane Austen Angell

2009
S. C. Glotzer Y. Gebremichael N. Lacevic T. B. Schrøder F. W. Starr

Liquids near their glass transition are dynamically heterogeneous, and experiments and simulations have uncovered much about the rich and complex nature of this heterogeneity. This paper highlights key results from our computer simulation studies of spatially heterogeneous dynamics (SHD) in supercooled liquids near their glass transtion. We speculate on the relationship between SHD and other ph...

Journal: :Chemical communications 2009
Morgan D Soutullo Richard A O'Brien Kyle E Gaines James H Davis

The ionic liquids N-methylpyridinium-2-carboxaldehyde Tf(2)N(-) and N-methylpyridinium-3-carboxaldehyde Tf(2)N(-) form readily-reversible covalent bonds with protic nucleophiles, creating all-liquid constitutionally dynamic materials.

Journal: :Molecules 2009
Elliot Ennis Scott T Handy

A convenient route for the preparation of C2-substituted imidazolium ionic liquids is reported. This method involves the alkylation of N-heterocyclic carbenes, which are readily generated from the C2-unsubstituted imidazolium ionic liquids. It works well for non-functionalized alkyl chlorides, and less well for alkyl bromides and iodides, likely due to competing elimination reactions. The resul...

2007
Nicolas Papaiconomou Jong-Min Lee Justin Salminen Moritz Von Stosch John M. Prausnitz

Extraction of dilute metal ions from water was performed near room temperature with a variety of ionic liquids. Distribution coefficients are reported for fourteen metal ions extracted with ionic liquids containing cations 1-octyl-4-methylpyridinium [4MOPYR], 1-methyl-1octylpyrrolidinium [MOPYRRO] or 1-methyl-1-octylpiperidinium [MOPIP], and anions tetrafluoroborate [BF4], trifluoromethyl sulfo...

Journal: :Organic & biomolecular chemistry 2008
Long Zhang Sanzhong Luo Xueling Mi Song Liu Yupu Qiao Hui Xu Jin-Pei Cheng

A facile combinatorial strategy was developed for the construction of libraries of functionalized chiral ionic liquids (FCILs) including doubly chiral ionic liquids and bis-functional chiral ionic liquids. These FCIL libraries have the potential to be used as asymmetric catalysts or chiral ligands. As an example, novel asymmetric bifunctional catalysts were developed by simultaneously incorpora...

Journal: :journal of sciences islamic republic of iran 0

a new simple model is introduced for a liquid and an equation of state is derived based on this model and the statistical mechanical calculations. this equation of state works well for the non-polar and slightly polar liquids. the important conclusion that may be deduced from this equation of state is that if the reduced variables of state are chosen and defined appropriately, then, the princip...

Journal: :journal of medical signals and sensors 0
hamidreza saberkari habib badri ghavifekr mousa shamsi

in recent years, demand for biological sensors which are capable of fast and accurate detection of minor amounts of pathogens inreal‑time form has been intensified. acoustic wave (aw) devices whose performance is determined by mass sensitivity parametersand quality factor are used in biological sensors as platforms with high quality. yet, current aw devices are facing many challengessuch as the...

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