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  • 1
    Electronic Resource
    Electronic Resource
    Acute renal failure associated with Yersinia pseudotuberculosis infection in children (1996)
    Springer
    Pediatric nephrology 10 (1996), S. 582-586 
    Details
    ISSN: 1432-198X
    Keywords: Key words: Yersinia pseudotuberculosis ; Acute renal failure ; Acute tubulointerstitial nephritis ; Untreated water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We report 45 pediatric cases of Yersinia pseudotuberculosis infection confirmed by stool culture between May 1993 and June 1994. In 41 (91.1%) cases there had been contact with untreated well or mountain water. Y. pseudotuberculosis was also isolated from 4 samples of mountain spring water thought to be the sources of infection. During the course of the illness, acute renal failure (ARF) developed in 6 patients (13.6%). The age distribution of the ARF group (12.3±1.2 years) was significantly different from the non-ARF group (8.0±3.2 years). The serogroups of Y. pseudotuberculosis isolates from stool samples were 5 (n = 30) and 4 (n = 15). Isolates from the water samples were all serogroup 5. The main symptoms of both groups were fever, rash, abdominal pain, and vomiting. ARF developed between the 2nd and 14th days (mean 6 days) after the onset of fever, and oliguria (〈400 ml/m2 per day) developed in 3 patients (3/6, 50%) immediately after their fevers had subsided. ARF underwent a benign course, with complete recovery within a maximum of 4 weeks (mean 10.2 days), with 1 exceptional patient requiring hemodialysis. Renal biopsy showed evidence of tubulointerstitial nephritis. Y. pseudotuberculosis should be included as one of the causes of acute interstitial nephritis causing ARF in children, especially when the children have histories of drinking untreated water in endemic areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004670050165
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  • 2
    Electronic Resource
    Electronic Resource
    Sporulation-inducing factor in slime mould Physarum polycephalum (1975)
    [s.l.] : Nature Publishing Group
    Nature 256 (1975), S. 413-414 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 Induction of sporulation by microinjection Injected substance Sporulation frequency No. of plasmodia sporulating No. tested None 0/4 0 Distilled water 0/10 0 Unilluminated plasmodial contents 0/14 0 Illuminated plasmodial contents 11/18 61 UM10 filtrate 3/5 60 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/256413a0
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  • 3
    Electronic Resource
    Electronic Resource
    Different Delamination Cracks during Fracture and Their Influences on the Fracture of X70 Pipeline Steel (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 33-37 (Mar. 2008), p. 91-96 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Single or multiple of delaminations have been found frequently on the fracture surface ofX70 pipeline steel. In this study, the delamination cracks and their influence on the fracture ofpipeline are investigated by both experiment and three-dimensional fracture analyses. It is shown thatthe three-dimensional stress state is prerequisite for delamination crack and the strength distributionof material influences the form and direction of delamination crack. The delamination cracks areproduced on the weak interfaces among the material by the tensile stress perpendicular to them beforethe fracture passes. The direction of delamination crack depends on the three-dimensional stress fieldsand strength distribution of material near the crack tip or notch root. The delamination cracks of thefracture through thickness of pipe wall make the effective thickness decrease and the delaminationcracks of surface crack are perpendicular to the direction of fracture propagation direction. Thedelamination cracks reduce the stress triaxiality near crack tip and in turn, improve the fracturetoughness of X70 pipeline steel
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.91.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Computational Study on Mechanical Behavior of Steel-Concrete Composite by using Interface Elements (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 345-346 (Aug. 2007), p. 909-912 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Although steel-concrete interface has significant influence on bonding strength and shearstrength, the composite structure with the consideration of the interface fracture has been rarelyconducted. In this study, sensitivity analyses are performed to find out steel-concrete interfacecharacteristics by using interface finite elements, defined as elastic-plastic behavior. In order to verifycomputational accuracy, the analyzed interface properties are compared with experimental results.Generally, interface in steel-concrete composite structure plays a critical role of controlling bondingstrength as well as transferring loads between steel and concrete. The composite interface should beavoided to reach to an interface fracture condition; otherwise composite structure may deviate fromintended behavior even under low stress state. It is then led to catastrophic fracture or collapse of thestructure. This study shows that interface properties of steel-concrete can be analyzed by using theinterface element, and the results provide more reliable prediction for the steel-concrete compositebehavior
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.909.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Hyperelastic Muscle Simulation (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 345-346 (Aug. 2007), p. 1241-1244 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Biological soft tissues like muscles and cartilages are anisotropic, inhomogeneous, andnearly incompressible. The incompressible material behavior may lead to some difficulties innumerical simulation, such as volumetric locking and solution divergence. Mixed u-P formulationscan be used to overcome incompressible material problems. The hyperelastic materials can be usedto describe the biological skeletal muscle behavior. In this study, experiments are conducted toobtain the stress-strain behavior of a solid silicone rubber tube. It is used to emulate the skeletalmuscle tensile behavior. The stress-strain behavior of silicone is compared with that of muscles. Acommercial finite element analysis package ABAQUS is used to simulate the stress-strain behaviorof silicone rubber. Results show that mixed u-P formulations with hyperelastic material model canbe used to successfully simulate the muscle material behavior. Such an analysis can be used tosimulate and analyze other soft tissues that show similar behavior
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.1241.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    An Enhanced Pre & Post Processing Technique for the Three Dimensional Tunnel Analysis: Tunnel Modelling Wizard (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 2798-2801 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: An enhancement to pre & post processing techniques, which is encapsulated in ‘TunnelModelling Wizard (TMW)’ for three dimensional tunnel analysis, is developed and described in thispaper. The techniques include geometry modelling, mesh generation, virtual transformation, flyingview and utilization and interpretation of analysis results. The TMW automatically generates fullanalysis data including mesh, loads, boundary conditions and construction stages from theuser-defined parameters. The TMW also provides its own file I/O service to help users expeditemodelling tasks for similar models and build their own tunnel templates. Implementation of the TMWinto a FE Program is described, and applications of the TMW to practical tunnel problems will bedemonstrated
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2798.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Application of Superelasticity of SMAs in Bolted End-Plate Connection (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 3039-3042 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Superelastic shape memory alloys (SMAs) can experience large strains up to 8~10% andrestore residual strains just by removing the stress. By employing this unique characteristic of SMAs,a new beam-to-column connection is presented in this paper. The proposed SMA connection consistsof an extended end-plate, eight long shank Nitinol SMA bolts, beam flange ribs, beam web stiffenersand continuity steel plates for reinforcing column flanges. In order to predict the behavior of SMAconnection, 3-D solid finite element models are set up in ANSYS. The numerical results indicate thatthe local buckling of beam is avoided and a plastic hinge forms at beam-to-column interface when themoment-carrying capacity of bolt cluster is below the elastic flexural capacity of connecting beam.The SMA connection shows stable moment-rotation hysteresis curves with re-centering capability,which demonstrates the connection’s self-healing deformations function. Far different from energydissipated by steel yield in traditional connection, the SMA connection shows moderate energydissipation capacity, and this amount of energy is mainly dissipated by the superelastic behavior ofSMA bolts. Moreover, the connection model shows a large inelastic rotation capacity beyond 0.03 rad.The ductility of SMA connection is deeply influenced by the length of SMA bolts, and the 2.2 timeslength of normal bolt is suggested for SMA bolts
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.3039.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Three-Dimensional Elastic Stress Fields of Finite Thickness Plates with Elliptical Hole (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 74-77 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Based on detailed three-dimensional finite element analyses, elastic stress and strain fieldof ellipse major axis end in plates with different thickness and ellipse configurations subjected touniaxial tension have been investigated. The plate thickness and ellipse configuration have obviouseffects on the stress concentration factor, which is higher in finite thickness plates than in plane stressand plane strain cases. The out-of-plane stress constraint factor tends the maximum on the mid-planeand approaches to zero on the free plane. Stress concentration factors distribute ununiformly throughthe plate thickness, the value and location of maximum stress concentration factor depend on the platethickness and the ellipse configurations. Both stress concentration factor in the middle plane and themaximum stress concentration factor are greater than that under plane stress or plane strain states, soit is unsafe to suppose a tensioned plate with finite thickness as one undergone plane stress or planestrain. For the sharper notch, the influence of three-dimensional stress state on the SCF must beconsidered
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.74.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Evaluation of Cracked Beam-to-Column Connection from Brittle Failure Using Finite Element Method (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 1021-1024 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The bolted end-plate composite beam-CCSHRC column connection was validated to beductile and offered an alternative to pre-Northridge connection. This study aims at the beam lowerflange fracture in the connection test, and applies the J-integral criteria to examine the connection’snonlinear fracture behavior. Advanced 3-D connection models containing initial crack in the highstress zone at lower flange are created, and the J values at the crack tip are calculated with consideringthe influences of certain parameters. The results demonstrate that the J values are strongly affected bythe initial crack length and interstory drift. For 0.94, 1.35, 1.86 and 2.50 mm long crack, the J valuessharply increase during loading history. The crack with a length of 2.50 mm propagates at a 66 mmdrift, while the 1.35 mm long crack grows at a 120 mm drift. For 0.94 or 0.61 mm long crack, it keepsstable without growing upon loading. Besides, the J values exhibit a weak sensitivity to the beamconcrete strength and tensile reinforcement ratio for beam. Under the same drift, the J-integralincreases by about 3.5% when concrete strength changes from 15 to 24 MPa, and the J values at 0.6%tensile reinforcement ratio for beam are 1.5% larger than those at 0.3% or 1% reinforcement ratio
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1021.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Finite Element Analysis of Blower Impeller Using Cyclic Symmetry (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 1082-1085 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper, we present an efficient method for conducting a finite element analysis of astructure with cyclic symmetry and apply the method to analyze the natural vibration and linear andnon-linear static characteristics of a blower impeller. A blower impeller is composed ofcircumferentially repeated substructures. The whole structure is partitioned into substructures, and thefinite element analysis can thus be performed with one representative substructure by using thetransformed equations for each number of nodal diameters, which are derived from a discrete Fouriertransform. We calculated the natural vibration and linear and non-linear static characteristics of ablower impeller without a stiffening ring, and with small as well as large stiffening rings, respectively.The accuracy and efficiency of the presented method are verified by comparison of the resultsobtained from the analysis using a substructure to those obtained using the whole structure
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1082.pdf
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