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
    BEM/FVM conjugate heat transfer analysis of a three-dimensional film cooled turbine blade (2003)
    Bradford : Emerald
    International journal of numerical methods for heat & fluid flow 13 (2003), S. 581-610 
    Details
    ISSN: 0961-5539
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: We report on the progress in the development and application of a coupled boundary element/finite volume method temperature-forward/flux-back algorithm developed to solve conjugate heat transfer arising in 3D film-cooled turbine blades. We adopt a loosely coupled strategy where each set of field equations is solved to provide boundary conditions for the other. Iteration is carried out until interfacial continuity of temperature and heat flux is enforced. The NASA-Glenn explicit finite volume Navier-Stokes code Glenn-HT is coupled to a 3D BEM steady-state heat conduction solver. Results from a CHT simulation of a 3D film-cooled blade section are compared with those obtained from the standard two temperature model, revealing that a significant difference in the level and distribution of metal temperatures is found between the two. Finally, current developments of an iterative strategy accommodating large numbers of unknowns by a domain decomposition approach is presented. An iterative scheme is developed along with a physically-based initial guess and a coarse grid solution to provide a good starting point for the iteration. Results from a 3D simulation show the process that converges efficiently and offers substantial computational and storage savings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09615530310482463
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Direct investigations of Bloch line memory functions by wall resonance spectroscopy (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3159-3161 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Pairs of vertical Bloch lines (VBL) stabilized by a periodic in-plane field potential are the storage elements in the Bloch line memory concept. Wall resonance spectroscopy (WRS) is used for the verification of VBL's in a wall section equivalent to one memory cell of a locally stabilized stripe domain. This corresponds to an area of about 5×5 μm in a 5-μm bubble garnet film. The sequential VBL propagation induced by z-field pulsing was demonstrated directly by means of a simple test chip with current VBL confinement, and a current loop for the drive pulses as main features. VBL detection is simply carried out by exciting the domain wall, which resonance signal vanishes when a VBL is present. The stripe is stabilized inside a 10% groove. Moreover, the local wall mass as well as the restoring constant could be inferred from the resonance line shape. The first WRS experiment with very high local resolution (2 μm) applied to localized stripe domains clearly demonstrates its potential usefulness for device testing, error mode detection, and optimization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340874
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    On the switching characteristics of Co and CoPtCr thin films (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 7731-7734 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the influence of intergranular magnetic coupling on switching characteristics in Co and CoPtCr thin films. The strength of the intergranular interactions was varied by changing the sputtering pressure and film or underlayer thickness. For each sample we have measured the deviation δM from the behavior expected for noninteracting single-domain particles and correlated the results to the magnetic layer and under layer thickness and to the microstructure of the recording film. We show a correlation between δM and the strength of magnetic coupling. Where similar magnetic parameters allow a comparison, we find a correlation between media noise and the trend in δM.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347549
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Disappearance of exciton reflection in ZnO at high excitation levels
    Amsterdam : Elsevier
    Solid State Communications 23 (1977), S. 27-30 
    Details
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0038-1098(77)90622-6
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Dental health of Vietnamese Boat People on Pulau Bidong, Malaysia (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 11 (1983), S. 0 
    Details
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract – The influx of refugees from Vietnam to the industrialized countries has attracted a certain interest to studies describing the oral health status of these population groups. The present study comprises 361 refugee arriving in Malaysia from Vietnam and collected immediately at the refugee camp on Pulau Bidong. Dental caries, calculus, gingival bleeding and loss of periodontal attachment were recorded. Mean dmft increased from 1.3 for 0–2-yr-olds to 7.4 for 3–5-yr-olds. For 6–9-yr-olds mean DMFT was 2 A while it ranged between 8.5 and 10.0 for the older age groups. The frequency of secondary lesions was high for all age groups. Calculus increased consistently with age, while gingival bleeding was common even in the youngest age group. Loss of periodontal attachment greater than or equal to 6 mm was rare in all age groups except the oldest (45 yr or older). A strategy for oral health care for these population groups is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0528.1983.tb01888.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Immigrants and a public oral health care service for children in Denmark (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 13 (1985), S. 0 
    Details
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract The present study was conducted to compare level of dental caries, treatment pattern and contact patterns with the Child Oral Health Care System of children of immigrants. The study comprised 239 Turkish, 117 Pakistani and 91 other immigrants and a control group of 359 Danish children. Data were extracted from the dental records in the clinic where they were treated. All groups of immigrants showed more caries in the primary dentition and less caries in the permanent dentition than Danish children of comparable age. For preschoolchildren a higher number of broken appointments were found for the immigrants as well as a higher number of appointments which were interrupted due to management problems. The consequences for planning preventive and restorative programs for children of immigrants are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0528.1985.tb00425.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Inconsistencies in a nationwide caries recording system (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 13 (1985), S. 0 
    Details
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— The Danish nationwide oral health registration system is a system where information is collected by many observers. As the registration system has been the basis for several papers, an estimation of the consistency of its information seems relevant. The present study attempted to determine types and frequencies of incon-sistencies in the caries recordings of the system, expressed as reversals in tooth or surface status. Recordings from two subsequent registrations of a random sample of 2189 individuals were compared surface by surface, in all, 209791 surfaces. The overall frequency of impossible changes in tooth status for permanent teeth was 0.9%, varying from 0.3% for molars to 2.8% for premolars. The frequency of impossible changes in surface score from first to second recording were 5.8% for the primary and 5.9% for the permanent dentition. The frequency varied with both tooth surface and score at first examination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0528.1985.tb01906.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Caries development after termination ot a fluoride rinsing program (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 20 (1992), S. 0 
    Details
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In a municipality near Copenhagen, Denmark, where fortnightly fluoride rinses with 0.2% neutral sodium fluoride had been performed for more than a decade, 1306 children from kindergarten through 6th grade were stratified by school and grade and randomly distributed into two groups. One group continued the fluoride rinses, the other group had the fluoride solution replaced with distilled water. Both solutions were slightly flavored. 1083 children completed the 3-yr trial. Caries was recorded clinically by the dentists in the municipal dental service using the diagnostic criteria for the Child Dental Health Services, and on bitewing radiographs by one of the authors applying the criteria developed by Grøundahl. et al. Permanent molars and premolars were included in the study. Clinically, caries increment in the two groups was the same with pits and fissures containing 94% of the DMFS. According to the radiographs, caries progression in the water group was higher than in the fluoride group. This difference was statistically significant for the surfaces erupting during the study (P 〈0.05).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0528.1992.tb01543.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Anomalous Distribution of Nuclear Disintegration in Photographic Emulsions Exposed to Cosmic Rays: Double Stars (1948)
    [s.l.] : Nature Publishing Group
    Nature 161 (1948), S. 844-844 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN making systematic exploration of 640 cm.2 of Ilford plates of 100µ thickness exposed vertically to cosmic rays for three to six weeks at a height of 3,600 m., we have observed 2,250 nuclear disintegrations and have noticed an anomaly in their distribution. The ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/161844a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Remarkable pair of double galaxies (1974)
    Springer
    Astrophysics 10 (1974), S. 2-5 
    Details
    ISSN: 1573-8191
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01005171
    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...