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  • Cambridge University Press
  • 1995-1999  (17)
  • 1960-1964  (4)
  • 1955-1959  (3)
  • 1940-1944  (6)
  • 1
    Digitale Medien
    Digitale Medien
    Cambridge : Cambridge University Press
    Architectural research quarterly 1 (1995), S. 22-29 
    ISSN: 1359-1355
    Quelle: Cambridge Journals Digital Archives
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: This essay explores the problem of creating a contemporary architecture for a rural setting with a strong indigenous character. It focuses on a series of three inter-related projects, designed by a team which includes the author, for the village of Calver in the Derbyshire Peak District. One of these projects, ‘The Orchard’ is presented in some detail to illustrate the investigation of an architecture that can be simultaneously cognisant of both broad cultural ideas and rooted to the specifics of a local cultural context.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Cambridge : Cambridge University Press
    The @British journal for the history of science 2 (1964), S. 1-24 
    ISSN: 0007-0874
    Quelle: Cambridge Journals Digital Archives
    Thema: Geschichte , Allgemeine Naturwissenschaft
    Notizen: SynopsisHistorians of seventeenth-century science have frequently asserted that Kepler's laws of planetary motion were largely ignored between the time of their first publication (1609, 1619) and the publication of Newton's Principia (1687). In fact, however, they were more widely known and accepted than has been generally recognized.Kepler's ideas were, indeed, rather slow in establishing themselves, and until about 1630 there are few references to them in the literature of the time. But from then onwards, interest in them increased fairly rapidly. In particular, the principle of elliptical orbits had been accepted by most of the leading astronomers in France before 1645 and in England by about 1655. It also received quite strong support in Holland.The second law had a more chequered history. It was enunciated in its exact form by a few writers and was used in practice by some others without being explicitly formulated, but the majority, especially after 1645, preferred one or another of several variant forms which were easier to use but only approximately correct. The third law attracted less interest than the others, chiefly perhaps because it had no satisfactory theoretical basis, but it was correctly stated by at least six writers during the period under review.Between about 1630 and 1650 Kepler's Epitome Astronomiae Copernicanae (in which all three laws were clearly formulated) was probably the most widely read work on theoretical astronomy in northern and western Europe, while his Rudolphine Tables, which were based upon the first two laws, were regarded by the majority of astronomers as the most accurate planetary tables available.Kepler's work certainly did not receive all the recognition it deserved, but the extent to which it was neglected has been much exaggerated.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 1942-01-01
    Beschreibung: 1. Increasing the ballast on pneumatic tyres, up to a certain weight, improves the tractor performance as judged by its speed, fuel consumption and wheel slip. Further increases beyond this point continued to decrease the wheel slip without having any marked effect on its speed or fuel consumption. No certain evidence was obtained that too heavy a ballast decreased the tractor's efficiency.2. The tyre load affects the maximum pull the tractor can exert while working reasonably efficiently, but this pull does not depend markedly on the speed of work. Wheel weights of about 12–13 cwt. seem to be the minimum required for optimum performance of the 36 or 28 in. tyres at pulls of 1800 lb. under fairly good ground conditions, and possibly a greater weight may be required by the 24 in. tyre.3. If the tractor is ploughing it is usually running tilted, and this tilt transfers sufficient weight on to the furrow wheel for it to work efficiently under most conditions. Additional ballast is, however, often necessary for the lighter land-side wheel.4. Tyre performance is much less dependent on inflation pressure than on ballast. Pressures below 10 lb./sq. in. were only of use in wet conditions when small amounts of additional ballast were not available. Pressures above 12 lb./sq. in. may allow excessive slip to take place and probably only need be used on the furrow wheel of a well-loaded tractor ploughing.
    Print ISSN: 0021-8596
    Digitale ISSN: 1469-5146
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 1944-07-01
    Beschreibung: A method is described for determining the field volume and the air space of a clod of any shape by filling its pores with a hydrocarbon oil, such as paraffin or tetralin, and determining its weight in the oil and in air before and after impregnation. The method appears to work well for clods of any moisture content.This method is shown to give values of these volumes entirely comparable with those given by the other accurate methods described in the literature. Its accuracy for clods of Rothamsted soil, weighing between 20 and 500 g., was probably at least 1 part per thousand, i.e. 0-1%.The method has been applied to the determination of the available water held by a soil and has been used to illustrate the effect of long-continued applications of farmyard manure to a soil in increasing the amount of available water it can hold.
    Print ISSN: 0021-8596
    Digitale ISSN: 1469-5146
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Publikationsdatum: 1943-07-01
    Beschreibung: An examination has been made of the possibility of extending the routine mechanical analysis of soils down to finer particles than the conventional clay. The main conclusions reached are:(1) Sampling depths of only 2 cm., using standard mechanical analysis apparatus, appear to introduce no new sources of error.(2) If a constant temperature room is available, sampling times of 7 days seem to be allowable.(3) Using special pipettes and settling vessels, sampling depths of only 2½ mm. seem to be allowable.
    Print ISSN: 0021-8596
    Digitale ISSN: 1469-5146
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Publikationsdatum: 1999-07-01
    Beschreibung: In mid-nineteenth century America, the Arctic adventures of Elisha Kent Kane were a common and central subject for the emerging mass media. Kane's exploits were retold through illustrated newspapers, magazines, and books, but his narratives found one of their widest audiences through the medium of the ‘panorama.’ Initially presented in fixed locations, these panoramas later traveled across the country, combining large moving canvasses with a variety of visual and theatrical effects. Kane's two Arctic expeditions were among the most popular subjects represented by panoramas in the period before the American Civil War. This article examines the history of the panorama as it reflected and shaped public interest in the Arctic regions, including earlier polar expeditions, and gives a detailed account of the Kane panoramas. Other optical media that represented Kane's exploits are also considered. Because of its broad audience and widespread appeal, the panorama, along with other emergent visual technologies, played a vital yet overlooked part, both in disseminating Kane's accomplishments and in elevating Kane to prominence and fame in the mid-nineteenth century.
    Print ISSN: 0032-2474
    Digitale ISSN: 1475-3057
    Thema: Ethnologie , Geographie
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Publikationsdatum: 1996-07-01
    Beschreibung: A calcium oxalate (whewellite)-rich crust occurs on exposed limestone surfaces in dry rock and open air shelters in the Lower Pecos region of southwest Texas. The crust, which also contains gypsum and clay, formed over silica-rich limestone during the Holocene. SEM and optical photomicrographs reveal similarities between whewellite microstructures and the lichen Aspicilia calcarea. This desert lichen is known to produce calcium oxalate, and has been found in several sites in the region. The ubiquity of the whewellite-rich crust in the Lower Pecos shelters suggests that the lichen flourished in the past. Since A. calcarea is a desert species, the virulence of the organism likely peaked during xeric climate episodes then waned during mesic periods. Thus, radiocarbon ages of whewellite would correspond to dry climate periods experienced in the region, while periods with few or no 14C data would indicate wet climate episodes. A preliminary paleoclimate reconstruction based on fourteen AMS14 C dates indicates the Lower Pecos experienced dry to wet climate fluctuations during the late Holocene. This reconstruction generally agrees with other models established for Texas.
    Print ISSN: 0033-5894
    Digitale ISSN: 1096-0287
    Thema: Geographie , Geologie und Paläontologie
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Publikationsdatum: 1998-01-01
    Print ISSN: 0022-1430
    Digitale ISSN: 1727-5652
    Thema: Geographie , Geologie und Paläontologie
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Publikationsdatum: 1964-07-01
    Beschreibung: Magnetohydrodynamic squeeze films are investigated theoretically and experimentally. The theory of magnetohydrodynamic lubrication as applied to squeeze films is extended to include fluid-inertia effects and buoyant forces. Excellent agreement is obtained between theory and experiment. © 1964, Cambridge University Press. All rights reserved.
    Print ISSN: 0022-1120
    Digitale ISSN: 1469-7645
    Thema: Maschinenbau , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Publikationsdatum: 1963-01-01
    Beschreibung: Texas Bio-Nuclear is a proprietary establishment engaged in offering C14 dating by the liquid-scintillation method as a service to those institutions and individuals who have a need for such a service. The Laboratory began actual dating operations in December 1961. The first few months were devoted to processing check samples in order to establish the reliability of the system. The dates listed below are not inclusive of all our dating, since the dates we furnish our clients are their property and the publishing of this information is their decision.
    Print ISSN: 0033-8222
    Digitale ISSN: 1945-5755
    Thema: Klassische Archäologie , Energietechnik , Geologie und Paläontologie
    Standort Signatur Erwartet Verfügbarkeit
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