Soap-bubbles, their colours and the forces which mould them ; being the substance of many lectures delivered to juvenile and popular audiences with the addition of several new and original sections /

Mode of access: Internet.

Dew-drops of the nineteenth century : gathered and preserved in their brightness and purity /

Reissue of the 1846 ed. cf. Faxon.

Soap-bubbles, their colours, and the forces which mould them. Being the substance of many lectures delivered in the theatre of the London institution on the afternoons of Dec. 30, 1889, Jan. 1 and 3, 1890, before a juvenile audience,

Mode of access: Internet.

Soap-bubbles and the forces which mould them. Being a course of three lectures delivered in the theatre of the London Institution on the afternoons of Dec. 30, 1889, Jan. 1 and 3, 1890, before a juvenile audience.

Available on demand as hard copy or computer file from Cornell University Library.

The manufacture of preserved foods and sweetmeats; a handbook of all the processes for the preservation of flesh, fruit, and vegetables, and for the preparation of dried fruit, dried vegetables, marmalades, fruit-syrups, and fermented beverages, and of all kinds of candies, candied fruit, sweetmeats, rocks, drops, dragées, pralines, etc.,

Mode of access: Internet.

The complete confectioner, or, The whole art of confectionary made easy: containing, among a variety of useful matter, the art of making the various kinds of biscuits, drops ... as also the most approved method of making cheeses, puddings, cakes &c. in 250 cheap and fashionable receipts. The result of many years experience with the celebrated Negri and Witten.

Confectionery.

Why 250,000 children quit school; the yearly army that drops out of line--standards too high and teaching too dull

"Reprinted from the 'World's work,' August, 1910."

Drops of water; or, Pencillings by the sea shore, showing the mysteries of the invisible world, and the goodness of God, as seen in the wonders of creation, by the aid of the compound microscope.

pt. 1. Pencillings by the sea shore.--pt. 2. Scenery of the ocean.

An experimental study of the effects of viscous and capillary forces on the trapping and mobilization of oil drops in capillary constrictions /

Thesis--University of Kansas, Chemical and Petroleum Engineering.

A comparison between capillary and imaging techniques for sizing bubbles in flotation systems

This communication reports a laboratory and plant comparison between the University of Cape Town (UCT) device (capillary) and the McGill University bubble sizing method (imaging). The laboratory work was conducted on single bubbles to establish the accuracy of the techniques by comparing with a reference method (capture in a burette). Single bubble measurements with the McGill University technique showed a tendency to slightly underestimate (4% for a 1.3 mm bubble) and the UCT technique to slightly overestimate (1% for the 1.3 man bubble). Both trends are anticipated from fundamental considerations. In the UCT technique bubble breakup was observed when measuring a 2.7 mm bubble using a 0.5 mm ID capillary tube. A discrepancy of 11% was determined when comparing the techniques in an industrial-scale mechanical flotation cell. The possible sources of bias are discussed. (C) 2003 Elsevier Ltd. All rights reserved.

Mechanisms of heat and mass transfer to and from single drops freely-suspended in an air stream

A specially-designed vertical wind tunnel was used to freely suspend individual liquid drops of 5 mm initial diameter to investigate drop dynamics, terminal velocity and heat and mass transfer rates. Droplets of distilled, de-ionised water, n-propanol, iso-butanol, monoethanolamine and heptane were studied over a temperature range of 50oC to 82oC. The effects of substances that may provide drop surface rigidity (e.g. surface active agents, binders and polymers) on mass transfer rates were investigated by doping distilled de-ionised water drops with sodium di-octyl sulfo-succinate surfactant. Mass transfer rates decreased with reduced drop oscillation as a result of surfactant addition, confirming the importance of droplet surface instability. Rigid naphthalene spheres and drops which formed a skin were also studied; the results confirmed the reduced transfer rates in the absence of drop fluidity. Following consideration of fundamental drop dynamics in air and experimental results from this study, a novel dimensionless group, the Oteng-Attakora, (OT), number was included in the mass transfer equation to account for droplet surface behaviour and for prediction of heat and mass transfer rates from single drops which exhibit surface instability at Re>=500. The OT number and the modified mass transfer equation are respectively: OT=(ava2/d).de1.5(d/) Sh = 2 + 0.02OT0.15Re0.88Sc0.33 Under all conditions drop terminal velocity increased linearly with the square root of drop diameter and the drag coefficient was 1. The data were correlated with a modified equation by Finlay as follows: CD=0.237.((Re/P0.13)1.55(1/We.P0.13) The relevance of the new model to practical evaporative spray processes is discussed.

Flowback of solids through distribution plates of gas fluidized beds and associated phenomena

This work is concerned with a study of certain phenomena related to the performance and design of distributors in gas fluidized beds with particular regard to flowback of solid particles. The work to be described is divided into two parts. I. In Part one, a review of published material pertaining to distribution plates, including details from the patent specifications, has been prepared. After a chapter on the determination of the incipient fluidizing velocity, the following aspects of multi-orifice distributor plates in gas fluidized beds have been studied: (i) The effect of the distributor on bubble formation related to the way in which even distribution of bubbles on the top surface of the fluidized bed is obtained, e.g. the desirable pressure drop ratio ?PD/?PB for the even distribution of gas across the bed. Ratios of distributor pressure drop ?PD to bed pressure drop at which stable fluidization occurs show reasonable agreement with industrial practice. There is evidence that larger diameter beds tend to be less stable than smaller diameter beds when these are operated with shallow beds. Experiments show that in the presence of the bed the distributor pressure drop is reduced relative to the pressure drop without the bed, and this pressure drop in the former condition is regarded as the appropriate parameter for the design of the distributor. (ii) Experimental measurements of bubble distribution at the surface has been used to indicate maldistribution within the bed. Maldistribution is more likely at low gas flow rates and with distributors having large fractional free area characteristics (i.e. with distributors having low pressure drops). Bubble sizes obtained from this study, as well as those of others, have been successfully correlated. The correlation produced implies the existence of a bubble at the surface of an orifice and its growth by the addition of excess gas from the fluidized bed. (iii) For a given solid system, the amount of defluidized particles stagnating on the distributor plate is influenced by the orifice spacing, bed diameter and gas flow rate, but independent of the initial bed height and the way the orifices are arranged on the distributor plate. II. In Part two, solids flowback through single and multi-orifice distributors in two-dimensional and cylindrical beds of solids fluidized with air has been investigated. Distributors equipped with long cylindrical nozzles have also been included in the study. An equation for the prediction of free flowback of solids through multi-orifice distributors has been derived. Under fluidized conditions two regimes of flowback have been differentiated, namely Jumping and weeping. Data in the weeping regime have been successfully correlated. The limiting gas velocity through the distributor orifices at which flowback is completely excluded is found to be indepnndent of bed height, but a function of distributor design and physical properties of gas and solid used. A criterion for the prediction of this velocity has been established. The decisive advantage of increasing the distributor thickness or using nozzles to minimize solids flowback in fluidized beds has been observed and the opportunity taken to explore this poorly studied subject area. It has been noted, probably for the first time, that with long nozzles, there exists a critical nozzle length above which uncontrollable downflow of solids occurs. A theoretical model for predicting the critical length of a bundle of nozzles in terms of gas velocity through the nozzles has been set up. Theoretical calculations compared favourably with experiments.

Buborékok és legendák. Válságok és válságmagyarázatok - a tulipánmánia és a Déltengeri Társaság, I. rész (Bubbles and myths, crises and explanations: tulip mania and the South Sea bubble. I.)

A 2007 óta kibontakozó válság újból divatba hozta a korai buborékok és válságok témáját. A jelenlegi válság nyomán újraéledtek a makroökónómiai viták, kétségessé vált a "nagy mérséklődés" és az újklasszikus szintézis érvényessége. Az 1634-1637 közötti holland tulipánmánia - mint az első buborék - sokféle értelmezése ismeretes: a tömeghisztéria kitörésétől a hatékony pénzügyi piacok korai példáján át a kulturális sokkig. Áttekintve ezeket, a cikk visszavezeti a tulipánmánia közismert anekdotikus leírásait az eredeti forrásokig, és megmutatja, milyen módon és céllal használták fel ezeket a közgazdászok és történészek saját elemzéseikben. / === / The accounts of early bubbles and crises are becoming fashionable again in economic discourse during the recent downturn. The article, having looked at the revival of macroeconomic debate provoked by the failure of current theory, sums up various interpretations of the Dutch tulip mania of 1634-7. These range from an outburst of popular madness, through an early example of an efficient financial market, to an instance of culture shock. Some well-known anecdotes about tulip mania are traced back to their original sources, and the article explores the various patterns and intentions in the use economists and historians have made of them.

Buborékok és legendák. Válságok és válságmagyarázatok - II/1. rész. A Déltengeri Társaság (Bubbles and myths crises and explanations II/1.: the South Sea bubble)

A cikk a tulipánmániával foglalkozó tanulmány folytatása (Madarász [2009]). A Déltengeri Társaság 1720-as fellendülése és kipukkadása mindmáig egyike a pénzügyi történelem leghíresebb és leggyakrabban emlegetett buborékainak. A közgazdaságtanban a buborék sokáig nem volt fontos téma, de az utóbbi időben ismét divatba jött. A tanulmány először a buborékmetafora néhány irodalmi példáját mutatja be, majd összefoglalja az angol államadósság kialakulását, a korai modern fiskális-militarista állam létrejöttét és a pénzügyi forradalom különböző interpretációit. A Déltengeri Társaság történetének, az adósság-részvény csere lebonyolításának és a korabeli vélemények spektrumának ismertetése után áttekintést ad arról, milyen módon és céllal használták fel az 1720-as eseményeket közgazdászok és történészek saját magyarázataikban. Ezek skálája a tudatos csalástól a befektetők irracionális mániáján át a racionális buborék kialakulásáig terjed. / === / The first part of the study (published here in 2009) was devoted to "tulipmania". This article continues the account of early bubbles and crises with the 1720 boom and bust of the South Sea Company, which is to this day one of the best known and most cited examples in history. For several decades, bubbles were not seen as an important issue in economic and financial theory, but recent events have focused attention on them again. The author introduces some historical examples of the bubble metaphor in literature, before giving an account of the emergence of British public debt and the fiscal-military state, and summarizing various interpretations of the financial revolution. An account of the South Sea Bubble, a detailed description of the debt-equity swap, and citations from some contemporary investors and observers are followed by an overview of the way the events of 1720 were used subsequently by various economists and historians in their own theorizing and explanations. The interpretations placed on it range from deliberate fraud, through irrational investment mania, to the emergence of a rational bubble.

Buborékok és legendák. Válságok és válságmagyarázatok II/2. rész. A Déltengeri Társaság (Bubbles and myths crises and explanations II/2.: the South Sea bubble)

A cikk a tulipánmániával foglalkozó tanulmány folytatása (Madarász [2009]). A Déltengeri Társaság 1720-as fellendülése és kipukkadása mindmáig egyike a pénzügyi történelem leghíresebb és leggyakrabban emlegetett buborékainak. A közgazdaságtanban a buborék sokáig nem volt fontos téma, de az utóbbi időben ismét divatba jött. A tanulmány először a buborékmetafora néhány irodalmi példáját mutatja be, majd összefoglalja az angol államadósság kialakulását, a korai modern fiskális-militarista állam létrejöttét és a pénzügyi forradalom különböző interpretációit. A Déltengeri Társaság történetének, az adósság-részvény csere lebonyolításának és a korabeli vélemények spektrumának ismertetése után áttekintést ad arról, milyen módon és céllal használták fel az 1720-as eseményeket közgazdászok és történészek saját magyarázataikban. Ezek skálája a tudatos csalástól a befektetők irracionális mániáján át a racionális buborék kialakulásáig terjed. / === / The first part of the study (published here in 2009) was devoted to "tulip-mania". This article continues the account of early bubbles and crises with the 1720 boom and bust of the South Sea Company, which remains to this day one of the best known and most cited examples in history. For several decades, bubbles were not seen as an important issue in economic and financial theory, but recent events have focused attention on them again. The author introduces some historical examples of the bubble metaphor in literature, before describing the emergence of British public debt and the fiscal/military state, and summarizing various interpretations of the financial revolution. An account of the South Sea Bubble, a detailed description of the debt-equity swap, and citations from some contemporary investors and observers are followed by an overview of how the events of 1720 were used subsequently by various economists and historians in their theorizing and explanations. Such interpretations range from deliberate fraud, through irrational investment mania, to the emergence of a rational bubble.