Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Michael A. A. O'Neill"'
Autor:
Benjamin Arthur Llewellyn Finnin, Jonnathan Hadgraft, Simon Gaisford, Michael A. A. O'Neill, Anthony E. Beezer, Patrick Sears
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 83:331-334
Isothermal calorimetry is becoming indispensable as a tool for the study of a wide variety of systems. As with all scientific instruments it is essential that robust calibration routines be developed in order to validate the data obtained. Chemical t
Publikováno v:
Thermochimica Acta. 420:19-22
This paper discusses the theory and experimental application of microcalorimetry to the study of solid state reactions of pharmaceutical importance. The practical example selected is that of formulated products containing benzoyl peroxide – a treat
Publikováno v:
Thermochimica Acta. 417:187-192
Recent papers have reported [Thermochim. Acta 399 (2003) 63; Thermochim. Acta, in press] the results of a preliminary inter/intra laboratory study into the suitability of the base-catalysed hydrolysis of methyl paraben as a test and reference reactio
Autor:
Anthony E. Beezer, Michael A. A. O'Neill, Denise A. Oliveira, George J. Vine, D. Olomolaiye, Pedro L. O. Volpe, Richard B. Kemp
Publikováno v:
Thermochimica Acta. 413:193-199
The results have recently been reported of a preliminary study into the base catalysed hydrolysis of methyl paraben as a test and reference reaction for flow-through microcalorimeters. The values quoted for the rate constant and the molar enthalpy ch
Autor:
Anthony E. Beezer, Michael A. A. O'Neill, Linda Nicolaides, JA Connor, Chloé Labetoulle, D. Olomolaiye, Richard B. Kemp, John C. Mitchell, J. A. Orchard
Publikováno v:
Thermochimica Acta. 399:63-71
The results of an inter/intra-laboratory study into a test and reference reaction for isothermal microcalorimeters, the imidazole catalysed hydrolysis of triacetin, have been reported in a recent paper [Thermochim. Acta 380 (2001) 13]. The results an
Autor:
Michael A. A. O'Neill, Anthony E. Beezer, JA Connor, J. A. Orchard, Andrew C. Morris, R.M. Deal, John C. Mitchell
Publikováno v:
Thermochimica Acta. 397:163-169
A recent paper has reported the results of an inter/intralaboratory study into a test and reference reaction for isothermal microcalorimeters, the imidazole catalysed hydrolysis of triacetin. The values derived were 2.8×10 −6 ±9.7×10 −8 dm 3 m
Autor:
Michael A. A. O'Neill, Koji Urakami, Richard J. Willson, JA Connor, Anthony E. Beezer, Andrew C. Morris
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 73:709-714
Several recent publications from this laboratory have reported developments in the capacity to calculate thermodynamic and kinetic parameters, such as rate constant, enthalpy, order of reaction, from isothermal micro-calorimetric data. To date these
Autor:
Lee D. Hansen, Simon Gaisford, Richard J. Willson, Laura J. Waters, Jennifer Beaudin, Madhu K. Parmar, John Orchard, John C. Mitchell, Gert Wolf, Michael A. A. O'Neill, Katharine T.E. Kierstan, Jonathan Hadgraft, Thomas C. Hofelich, Richard A. Winneke, Anthony E. Beezer, Mark A. Phipps, Andrew K. Hills, Andrew C. Morris, Eric A. Schmitt, Rebecca M. Deal, Roy Anthony Lane, JA Connor, David O’Sullivan, Felix Baitalow, Graham Buckton
Publikováno v:
Thermochimica Acta. 380:13-17
This paper reports the outcomes of an inter- and intra-laboratory microcalorimetric investigation of the triacetin hydrolysis reaction in an imidazole/acetic acid buffer system. The purpose was to establish whether this reaction would be an appropria
Autor:
JA Connor, Richard J. Willson, Anthony E. Beezer, Andrew K. Hills, Michael A. A. O'Neill, Andrew C. Morris, and John C. Mitchell
Publikováno v:
The Journal of Physical Chemistry B. 105:1212-1215
Calorimetry is recognized1-8 as a noninvasive, nondestructive method for the determination of both the thermodynamic and the kinetic parameters associated with chemical reactions. The most immediate applications of the technique have been found in th
Autor:
David E. Clapham, John Frost, Simon Gaisford, Joseph A. Connor, Meena Dhuna, Andrew C. Morris, Anthony E. Beezer, Jonathan Hadgraft, Michael A. A. O'Neill
Publikováno v:
The Review of scientific instruments. 78(2)
Assessing photostability (particularly of pharmaceuticals) is of growing importance, but hampered by a lack of reliable, rapid experimental testing protocols and instrumentation. In particular, most approaches require irradiation of the sample separa