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  • 1
    Electronic Resource
    Electronic Resource
    Railway innovation and uncertainty (1982)
    Oxford, UK : Blackwell Publishing Ltd
    R & D management 12 (1982), S. 0 
    Details
    ISSN: 1467-9310
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper outlines two innovative projects carried out within the same organisation, but with markedly differing results. One has been satisfactorily completed while the other, although having run for much longer, is still experiencing technical problems. The two projects, British Rail's Advanced Passenger Train, and High Speed Train, are examined in relation to the concept of uncertainty. It is suggested that many of the points upon which the projects are differentiated can be attributed to the degree of uncertainty to which they were subject. It is concluded that one means of handling the uncertainty associated with development programmes is to adopt a flexible approach. It is noted, however, that flexibility may not be simply a question of personnel or organisational disposition, but can be influenced by the characteristics of particular projects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9310.1982.tb00481.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The Covariation of Blood Pressure and Pulse Transit Time in Hypertensive Patients (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 18 (1981), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: To examine the relationship between blood pressure (BP) and pulse transit time (PTT) as measured by the time between the ECG R-wave and an associated peripheral pulse, BP was recorded via a radial artery catheter in 3 hvpertensive subjects who underwent a variety of conditions to alter BP. Overall. 70% of the data was usable. Absolute levels of systolic blood pressure (SBP) but not diastolic blood pressure (DBP) were found to correlate appreciably with PTT. There were significant associations between PTT and both SBP and mean BP but not DBP for direction of BP change. With large SBP changes (〉 4 mmHg) an increase in the strength of association occurred in 14 of the 21 conditions across subjects. Overall, PTT did not accurately predict actual BP. PTT and SBP covaried more appreciably in these hypertensives than has been reported for normotensives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1981.tb03038.x
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of low-dose heparin on blood loss at abdominal hysterectomy (1983)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 90 (1983), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary. In a double blind trial, the effect of prophylactic low-dose subcutaneous heparin or saline on peri-operative blood loss was studied in 100 women undergoing abdominal hysterectomy. Mean blood loss was 401 (SEM 75) ml and 246 (SEM 15) ml in the women who received heparin or saline, respectively. Coagulation studies were carried out during the pre-and post-operative phases in order to assess the contribution of any coagulation abnormalities to operative blood loss. In identifying patients at risk, platelet function tests were of some value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1983.tb09307.x
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  • 4
    Electronic Resource
    Electronic Resource
    Development of the third generation electron cyclotron resonance ion source : Proceedings of the 7th international conference on ion sources (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 682-684 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The LBNL third generation electron cyclotron resonance (ECR) ion source has progressed from a concept to the fabrication of a full scale prototype superconducting magnet structure. This new ECR ion source will combine the recent ECR ion source techniques that significantly enhance the production of high charge state ions. The design includes a plasma chamber made from aluminum to provide additional cold electrons, three separate microwave feeds to allow multiple-frequency plasma heating (at 10, 14, and 18 GHz or at 6, 10, and 14 GHz) and very high magnetic mirror fields. The design calls for mirror fields of 4 T at injection and 3 T at extraction and for a radial field strength at the wall of 2.4 T. The prototype superconducting magnet structure which consists of three solenoid coils and six race track coils with iron poles forming the sextupole has been tested in a vertical Dewar. After training, the sextupole magnet reached 105% of its design current with the solenoids off. With the solenoids operating at approximately 70% of their full design field, the sextupole coils operated at 95% of the design value which corresponds to a sextupole field strength at the plasma wall of more than 2.1 T. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149169
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  • 5
    Electronic Resource
    Electronic Resource
    Cryogenic, all-sapphire, Fabry–Perot optical frequency reference (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 955-960 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This paper presents a design for a Fabry–Perot optical frequency reference resonator which utilizes the high dimensional stability of cryogenically cooled sapphire. We show that cryogenic sapphire cavities can achieve substantial improvements in frequency stability compared with room-temperature cavities. The design of a laser stabilization system based on such a resonator is discussed. Estimates of fundamental and practical limitations on the frequency stability of such a system suggest that a fractional frequency stability of 10−16 over integration times from 10 to 104 s is possible. The fundamental limits to stability from quantum shot noise, radiation pressure fluctuations, and thermal noise are overwhelmed by practical limits which arise due to mechanical, thermal, and optical effects. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145629
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  • 6
    Electronic Resource
    Electronic Resource
    Energetics and Mechanics of Terrestrial Locomotion (1982)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 44 (1982), S. 97-107 
    Details
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ph.44.030182.000525
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  • 7
    Electronic Resource
    Electronic Resource
    VOCABULARY FOR EDUCATION IN ENGLISH (1982)
    Oxford, UK : Blackwell Publishing Ltd
    World Englishes 2 (1982), S. 0 
    Details
    ISSN: 1467-971X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: English, American Studies
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-971X.1982.tb00531.x
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  • 8
    Electronic Resource
    Electronic Resource
    Deep-Sea Microbiology (1984)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 38 (1984), S. 487-487 
    Details
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.mi.38.100184.002415
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  • 9
    Electronic Resource
    Electronic Resource
    Stereochemistry and regiochemistry of electron impact thermally and photolytically induced eliminations from 2-decalyly acetates (1980)
    s.l. : American Chemical Society
    The @journal of organic chemistry 45 (1980), S. 126-130 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo01289a024
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    An analysis of the dynamic response of stomatal conductance to a reduction in humidity over leaves of Cedrella odorata (1999)
    Oxford, UK : Blackwell Science Ltd.
    Plant, cell & environment 22 (1999), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Single leaves of 3-month-old Cedrella odorata seedlings were exposed to a step reduction in the ambient dew point. The resultant time series of dynamic variations in leaf surface water vapour concentration, leaf surface water vapour concentration gradient, transpiration rate and stomatal conductance to water vapour, are analysed using the data-based mechanistic (DBM) modelling methodology of Young (e.g. Young & Lees 1992; Minchin et al. 1996 ). It is shown that the identified second-order, dynamic model between transpiration rate (as the input) and stomatal conductance (as the output) provides an appropriate, physiologically meaningful, description of the system. In particular, the dynamic relationship between these two variables is remarkably linear and can be resolved in terms of two parallel, first-order, subsystems; a model which complements the results of Cowan (1977) for cotton. The model is also compared with the recently published simulation model of Haefner, Buckley & Mott (1997).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3040.1999.00446.x
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