A compendious history of the world from the creation to the dissolution of the Roman Republic ... with a continuation to the peace of Amiens, 1802 ...

Mode of access: Internet.

A narrative of the dissolution of the medical faculty of Transylvania University.

Mode of access: Internet.

A plain statement of the reasons which led to a dissolution of the connection of the author with the Methodist Episcopal church,

Mode of access: Internet.

A connected series of notes on the chief revolutions of the principal states which composed the empire of Charlemagne, from his coronation in 814, to its dissolution in 1806: on the geneaologies [!] of the imperial house of Habsburgh, and of the six secular electors of Germany; and on Roman, German, French and English nobility.

Mode of access: Internet.

A succint history of the geographical and political revolutions of the empire of Germany, or the principal states which composed the empire of Charlemagne, from his coronation in 814, to its dissolution in 1806; with some account of the genealogies of the imperial house of Hapsburgh, and of the six secular electors of Germany; and of Roman, German, French and English nobility.

First published under title: A connected series of notes on the chief revolutions of the principal states which composed the empire of Charlemagne, London, 1807.

Memoirs of Great Britain and Ireland : from the dissolution of the last Parliament of Charles II, until the sea-battle of La Hogue /

Mode of access: Internet.

Catalogi veteres librorum Ecclesiae cathedralis dunelm. Catalogues of the library of Durham cathedral, at various periods, from the conquest to the dissolution, including catalogues of the library of the abbey of Hulne, and of the mss.

Preface signed: B. B. [i. e. Beriah Botfield]

Speech of Mr. J.R. Underwood, upon the resolution proposing to censure John Quincy Adams for presenting to the House of Representatives a petition praying for the dissolution of the Union : delivered in the House of Representatives on the 27th of January, 1842.

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Essais historiques sur la dissolution et le rétablissement de la monarchie angloise.

Mode of access: Internet.

Dissolution of porcine incisor pulps in sodium hypochlorite solutions of varying compositions and concentrations

Background: The solubility of dental pulp tissue in sodium hypochlorite has been extensively investigated but results have been inconsistent; due most likely to variations in experimental design, the volume and/or rate of replenishment of the solutions used and the nature of the tissues assessed. Traditionally, the sodium hypochlorite solutions used for endodontic irrigation in Australia have been either Milton or commercial bleach, with Milton being the most common. Recently, a range of Therapeutic Goods Administration (TGA) approved proprietary sodium hypochlorite solutions, which contain surfactant, has become available. Some domestic chlorine bleaches now also contain surfactants. The purpose of this study was to perform new solubility assessments, comparing Milton with new TGA approved products, Hypochlor 1% and Hypochlor 4% forte, and with a domestic bleach containing surfactant (White King). Methods: Ten randomly assigned pulp samples of porcine dental pulp of approximately equal dimensions were immersed in the above solutions, as well as representative concentrations of sodium hydroxide. Time to complete dissolution was measured and assessed statistically. Results: White King 4% showed the shortest dissolution time, closely followed by Hypochlor 4% forte. White King 1% and Hypochlor 1% each took around three times as long to completely dissolve the samples of pulp as their respective 4% concentrations, while Milton took nearly 10 times as long. The sodium hydroxide solutions showed no noticeable dissolution of the pulp samples. Conclusions: The composition and content of sodium hypochlorite solutions had a profound effect on the ability of these solutions to dissolve pulp tissue in vitro. Greater concentrations provided more rapid dissolution of tissue. One per cent solutions with added surfactant and which contained higher concentrations of sodium hydroxide were significantly more effective in dissolution of pulp tissue than Milton.

Dissolution, recovery and fade of Sr master alloys in Al-7Si-0.5Mg casting alloys

A number of commercial Al-Sr master alloys of differing Sr content and product form have been added to Al-7Si-0.5Mg casting alloy melts and held at constant temperature for periods up to 7 hours following the addition. The master alloys were added to achieve a specific Sr target level of 200 ppm, and the melts were held at various temperatures (most at 710ºC, but also 670, 690, 740 and 770ºC). A total of thirty six melt trials were conducted and during each trial chill-cast disc samples were taken throughout for subsequent chemical analysis. The Sr concentration versus time data of each trial has been considered in terms of Sr dissolution/recovery behaviour, as well as Sr loss/fade. Trends in the data are identified and discussed, and implications for industrial practices are suggested.

The effect of selected water-soluble excipients on the dissolution of paracetamol and ibuprofen

The purpose of this investigation was to study the dissolution behavior of paracetamol and ibuprofen in the presence of a range of selected potential excipients. First, a pH-solubility profile was generated for both drugs, and the effect of changing hydrodynamic conditions on the intrinsic dissolution rate was investigated. It was established that both drugs dissolved according to the diffusion-layer model. Paracetamol solubility (approximately 20.3 mg mL -1) did not vary from pH 1.2-8.0, corresponding to the in vivo range in the gastrointestinal tract. Ibuprofen had an intrinsic solubility of approximately 0.06 mg mL-1, and pKa was calculated as 4.4. Second, the effects of selected potential excipients (lactose, potassium bicarbonate, sodium bicarbonate, sodium chloride, and tartaric acid) were evaluated by measuring the effect of the inclusion of each additive in the dissolution medium on drug solubility, drug intrinsic dissolution rate, and solution viscosity. The results were evaluated using the diffusion-layer model, and it was determined that for paracetamol, the collected data fitted the model for all the excipients studied. For ibuprofen, it was found that there were differences between the excipients that raised the solution pH above the pK a to those that did not. For the excipients raising the pH above the pKa, the effect on intrinsic dissolution rate was not as high as that expected from the change in drug solubility. It was postulated that this might be due to lack of penetration of the excipient into the drug boundary layer microenvironment. Formulators may calculate the effect of adding an excipient based on solubility increases but may not find the dissolution rate improvement expected. Copyright © 2005 Taylor & Francis Inc.