Studies in literature /

Wordsworth.--Aphorisms.--Maine on popular government.--A few words on French models.--On the study of literature.--Victor Hugos̓ Ninety-three.--In The ring and the book.--Memorials of a man of letters [Macvey Napier]--Valedictory.

Hope and strength : addresses.

Mode of access: Internet.

History of the holy rood-tree, a twelfth century version of the cross legend, with Notes on the orthography of the Ormulum (with a facsimile) and a Middle English Compassio Mariae.

Bibliography: p. x-xi.

Lectures on Butler's Analogy of religion, to the constitution and course of nature /

Mode of access: Internet.

A manual of electro-metallurgy : including the applications of the art to manufacturing processes /

Includes index.

Excursions in Southern Africa, including a history of the Cape Colony, an account of the native tribes, etc.

Portions of this work originally appeared in the "New monthly magazine". cf.Introd.

The new Gradatim; a revision, with many additions and omissions, of "Gradatim", an easy Latin translation book for beginners,

Mode of access: Internet.

European settlements on the west coast of Africa ; with remarks on the slave trade and the supply of cotton /

Reprint of the 1862 ed.

Surveys of Scottish history,

Introduction.--Methods of writing history.--The moulding of the Scottish nation.--The Scottish nobility and their part in the national history.--The régime of the later Stewarts in Scotland.--The union of the parliaments of England and Scotland, 1707.--Four representative documents of Scottish history.--Scotland in the eighteenth century.--Intellectual influences of Scotland on the continent.--A forgotten scholar of the sixteenth century [Florence Volusene]--Literature and history.--John Napier of Merchiston.

Two empirical hydrocyclone models revisited

There has been an abundance of literature on the modelling of hydrocyclones over the past 30 years. However, in the comminution area at least, the more popular commercially available packages (e.g. JKSimMet, Limn, MODSIM) use the models developed by Nageswararao and Plitt in the 1970s, either as published at that time, or with minor modification. With the benefit of 30 years of hindsight, this paper discusses the assumptions and approximations used in developing these models. Differences in model structure and the choice of dependent and independent variables are also considered. Redundancies are highlighted and an assessment made of the general applicability of each of the models, their limitations and the sources of error in their model predictions. This paper provides the latest version of the Nageswararao model based on the above analysis, in a form that can readily be implemented in any suitable programming language, or within a spreadsheet. The Plitt model is also presented in similar form. (C) 2004 Elsevier Ltd. All rights reserved.

Application of central composite rotatable design to modelling the effect of some operating variables on the performance of the three-product cyclone

The central composite rotatable design (CCRD) was used to design an experimental program to model the effects of inlet pressure, feed density, and length and diameter of the inner vortex finder on the operational performance of a 150-min three-product cyclone. The ranges of values of the variables used in the design were: inlet pressure: 80-130 kPa, feed density: 30 60%; length of IVF below the OVF: 50-585 mm; diameter of IVF: 35-50 mm. A total of 30 tests were conducted, which is 51 less; an that required for a three-level full factorial design. Because the model allows confident performance prediction by interpolation over the range of data in the database, it was used to construct response surface graphs to describe the effects of the variables on the performance of the three-product cyclone. To obtain a simple and yet a realistic model, it was refitted using only the variable terms that are significant at greater than or equal to 90% confidence level. Considering the selected operating variables, the resultant model is significant and predicts the experimental data well. (c) 2005 Elsevier B.V. All rights reserved.

Wills' mineral processing technology: an introduction to the practical aspects of ore treatment and mineral recovery

"Wills' Mineral Processing Technology" provides practising engineers and students of mineral processing, metallurgy and mining with a review of all of the common ore-processing techniques utilized in modern processing installations. Now in its Seventh Edition, this renowned book is a standard reference for the mineral processing industry. Chapters deal with each of the major processing techniques, and coverage includes the latest technical developments in the processing of increasingly complex refractory ores, new equipment and process routes. This new edition has been prepared by the prestigious J K Minerals Research Centre of Australia, which contributes its world-class expertise and ensures that this will continue to be the book of choice for professionals and students in this field. This latest edition highlights the developments and the challenges facing the mineral processor, particularly with regard to the environmental problems posed in improving the efficiency of the existing processes and also in dealing with the waste created. The work is fully indexed and referenced. -The classic mineral processing text, revised and updated by a prestigious new team -Provides a clear exposition of the principles and practice of mineral processing, with examples taken from practice -Covers the latest technological developments and highlights the challenges facing the mineral processor -New sections on environmental problems, improving the efficiency of existing processes and dealing with waste.