Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Numerical Models for Two-Phase Turbulent Flows (1996)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 28 (1996), S. 11-43 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.28.010196.000303
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Self-organizing particle dispersion mechanism in a plane wake (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 2244-2251 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Experimental and numerical results concerning solid particle motion in a plane wake are presented that demonstrate the importance of large-scale vortex structures in self-organizing dispersion processes. Previous studies have demonstrated that a time scale ratio involving the aerodynamic response time of the particles and a characteristic time of the vortex structures is an important parameter for indicating the qualitative and quantitative nature of the dispersion process. A stretching and folding mechanism associated with vortex development and merging interactions has been suggested as a description for characterizing particle dispersion in plane mixing layers at intermediate time scale ratios. For plane wakes where large-scale vortex mergers rarely occur, a highly organized particle dispersion process focuses intermediate time scale ratio particles along the boundaries of the large-scale vortices. The fractal correlation dimension associated with chaotic systems is found to be a useful parameter for quantifying the relative organization of the dispersion patterns as a function of the particle time scale ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.858465
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The influence of particles on the spatial stability of two-phase mixing layers (1990)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 2 (1990), S. 1839-1845 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A modified Rayleigh equation has been derived for the study of spatial instability of gas–particle two-phase mixing layers. The particles are assumed to have a material density much greater than the carrier fluid. The mathematical model is based on the assumptions that the mean flow profile can be approximated as that of the particle-free single-phase mixing layer and that the two phases are in dynamic equilibrium at the start of the perturbation. The resulting eigenvalue problem was solved numerically. The major finding from the analysis is that the presence of the particles enhances the stability of the two-phase flow and decreases the amplification rate of perturbations in the flow. The results show that the stability of the flow is enhanced with increased particle loading and decreased free-stream velocity ratio. For a given free-stream velocity ratio, the most amplified growth rates decrease almost linearly with the particle loading. The most amplified growth rate, however, occurs near the same angular frequency as that of the particle-free flow. The effect of particle on the perturbation phase velocity is most significant for smaller values of the angular frequency. However, the presence of particles does not change the phase velocity at the angular frequency corresponding to the most amplified rate for the single-phase flow. The phase velocity of the perturbations is slower compared to particle-free flows for modes with frequencies below the maximum amplified frequency, while it is the opposite for modes at frequencies above the maximum amplified frequency. The profiles of streamwise and cross-stream velocity fluctuations are also modified by the existence of particles. The magnitude of effects is related closely to the particle loading. For temporal instability of a two-phase mixing layer, the growth rate in time decreases linearly with increasing particle loading, which is consistent with the spatial instability results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.857657
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Anaesthetic depth at inductionAn evaluation using clinical eye signs and EEG polysomnography (1998)
    Oxford : Blackwell Science Ltd
    Anaesthesia 53 (1998), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We describe the stages of non-REM sleep induced by anaesthesia with sevoflurane 8% in oxygen and relate these stages to clinical eye positions. We explored John Snow's observation (1847) that ‘when voluntary movement ceases, with the eyes fixed in an upward gaze during the gas induction of anaesthesia, the patient is protected against the risk of mental suffering’ (awareness). Unpremedicated ASA 1 patients undergoing elective tonsillectomy were studied using EEG polysomnographic principles and clinical eye movement tracking. The results expressed as median and range were: latency to stage 1 sleep 4.5 min [2.5–7.5], stage 2 sleep 5 min [3.5–8.5], stage 3 sleep 5.5 min [4–12] and stage 4 sleep 6 min [4.5–15.5]. Eye position 5, the point of no further eye movement, was reached after 9 min [5.5–18.5]. This was significantly longer than the time taken to reach the stage 4 sleep EEG, p 〈 0.01, supporting Snow's observation and encouraging investigation into eye movement tracking technology as a potential monitor of anaesthetic depth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2044.1998.00468.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Carbon-14 Activity during the past 5,000 Years (1958)
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 470-471 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] If the difference, t, between the actual age t and the radiocarbon age t of a specimen is attributed to an initial activity not the same as that of present living material, the change in activity relative to that of the present is given by : R ==f(XAz (*aj i) where A* = t t and X = 1-24 X 10-4 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/182470a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    'Women want it': In-vitro fertilization and women's motivations for participation
    Amsterdam : Elsevier
    Women's Studies International Forum 8 (1985), S. 547-552 
    Details
    ISSN: 0277-5395
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Sociology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0277-5395(85)90092-5
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Perforated enterocyst: a late complication of neonatal necrotizing enterocolitis (1992)
    Springer
    Pediatric surgery international 7 (1992), S. 394-395 
    Details
    ISSN: 1437-9813
    Keywords: Enterocyst ; Intestinal stenosis ; Necrotizing enterocolitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Infants with necrotizing enterocolitis (NEC) may develop late sequelae including intestinal stenoses, enteric fistulae, abscess formation, recurrent NEC, cholestasis, malabsorption, short gut syndrome, and enterocyst formation [4]. A case is reported where a child developed an enterocyst arising from the proximal aspect of a defunctionalized Hartmann's pouch 2 years after ileostomy and near-total colectomy. The patient presented with fever and abdominal pain and distension, and was successfully treated by excision of the perforated enterocyst. This rare complication demonstrates that problems may develop in a defunctionalized bowel segment long after primary therapy for NEC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00176605
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    facet.materialart.
    Unknown
    ON THE "IRRATIONALITY" OF ZEN (1965)
    Honolulu : Periodicals Archive Online (PAO)
    Philosophy East and West. 15:1 (1965:Jan.) 31 
    Details
    ISSN: 0031-8221
    Topics: Philosophy
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:5114-1965-015-01-000003
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Effect of thermal treatment on the mechanical and toughness properties of extruded SiCw/aluminium 6061 metal matrix composite (1985)
    Springer
    Journal of materials science 20 (1985), S. 4147-4154 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Mechanical, instrumented Charpy V-notch (CVN) energy and plane strain fracture toughness properties of SiC whisker reinforced-6061 aluminium metal matrix composite material from an extruded tube have been determined. The effect of thermal treatment and orientation have been studied. The mechanical strength properties are higher than wrought Al 6061 in the T6 condition. CVN energy values, however, were reduced by an order of magnitude.K lc fracture toughness of the as-received, T6 and degassed + T6 thermal treatments were 50% of the wrought Al 6061 alloy. The effect of orientation showed that the orientation with the least amount of SiC whisker in the crack plane (i.e. greatest mean free path between reinforcements) yields the highest toughness value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00552410
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Comment on “A new type of twinning in TiAl-2wt% Mn intermetallic compound” (1989)
    Springer
    Journal of materials science 8 (1989), S. 1238-1238 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01730079
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...