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  • 1
    Electronic Resource
    Electronic Resource
    HPLC determination of thiamin and riboflavin in soybeans and tofu (1990)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 38 (1990), S. 163-167 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00091a035
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  • 2
    Electronic Resource
    Electronic Resource
    Retention of configuration at the migrating atom in the photochemical 1,3-allylic shift of a benzyl group (1975)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 97 (1975), S. 1153-1160 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00838a032
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Surface wave propagation in a transversely isotropic elastic layer overlying a liquid saturated porous solid half-space and lying under the uniform layer of liquid (1990)
    Springer
    Pure and applied geophysics 133 (1990), S. 523-539 
    Details
    ISSN: 1420-9136
    Keywords: Surface waves ; transversely isotropic ; liquid saturated porous solid ; dispersion ; Rayleigh type waves ; nondissipative porous media ; frequency equation ; phase velocity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Dispersion of Rayleigh-type surface wave is studied in a homogeneous transversely isotropic elastic layer overlying a nondissipative liquid-saturated porous solid half-space and lying under a uniform layer of homogeneous liquid. The frequency equation in the form of ninth-order determinant is obtained. Special cases have been deduced by reducing the depth of the layers to zero and by changing the transverse isotropic layer to an isotropic layer. Dispersion curves for the phase velocity have been plotted for a particular model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00878003
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  • 4
    Electronic Resource
    Electronic Resource
    Reflection and transmission ofSH waves in an initially stressed medium consisting of a sandy layer lying over a fluid-saturated porous solid (1993)
    Springer
    Pure and applied geophysics 140 (1993), S. 613-628 
    Details
    ISSN: 1420-9136
    Keywords: Propagation ; poroelastic ; viscosity ; anelasticity, dissipation, interstitial fluid, energy, parfition ; initial stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Biot's theory is employed to study the reflection and transmission ofSH waves in a sandy layer lying over a fluid-saturated porous solid half-space. The entire medium is considered under constant initial stress. Effects of sandiness, initial stress, anelasticity and viscosity of the interstitial fluid on the partitioning of energy are studied. In the presence of initial stress the incident wave starts attenuating when incider beyond a certain angle (depending upon the amount of initial stress), even if the medium is perfectly clastic. Anelasticity of the solid layer results in the dissipation of energy during transmission. The direction of attenuation vector of incident wave affects the dissipation energy to a large extent. Effect on partitioning of energy reverse at incidence after the critical angle. A complete account of energy returmed back to the underlying half-space and that which is dissipated in the overlying layer has been discussed analytically as well as numerically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00876579
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  • 5
    Electronic Resource
    Electronic Resource
    Estimation of Seismic Hazard Parameters for the Himalayas and its Vicinity from Complete Data Files (1998)
    Springer
    Pure and applied geophysics 152 (1998), S. 267-279 
    Details
    ISSN: 1420-9136
    Keywords: Key words: Seismic hazard, return period, maximum likelihood, natural hazard, seismic zone, macroseismic, seismotectonic segments.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract —The maximum likelihood estimation of earthquake hazard parameters has been made in the Himalayas and its surrounding areas on the basis of a procedure which utilizes data containing complete files of the most recent earthquakes. The entire earthquake catalogue used covers the period from 1900–1990. The maximum regional magnitude M max , the activity rate of the seismic event λ, the mean return period R of earthquakes with a certain lower magnitude M max≥ m along with their probability of occurrence, as well as the parameter b of of Gutenberg Richter magnitude-frequency relationship, have been determined for six different seismic zones of the Himalayas and its vicinity. It is shown that in general the hazard is higher in the zone NEI and BAN than the other four zones. The high difference of the b parameter and the hazard level from zone to zone reflect the high seismotectonic complexity and crustal heterogeneity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000240050154
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  • 6
    Electronic Resource
    Electronic Resource
    Seismic wave propagation in a viscoelastic porous solid saturated by viscous liquid (1991)
    Springer
    Pure and applied geophysics 135 (1991), S. 383-400 
    Details
    ISSN: 1420-9136
    Keywords: Viscoelastic porous solid ; dissipative ; frequency ; reflection coefficients ; attenuation ; saturated ; viscous ; Poiseuille
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A general solution is deduced of the differential equations describing the propagation of elastic waves in a dissipative liquid-filled viscoelastic porous solid. The velocities of three existing waves have been expressed in convenient form using the moduli of the solid phase and by introducing the frequency-dependent equivalent mass densities. The solution is then used to examine some of the phenomena which arise when each of the three-body waves, in turn, are incident on a traction-free plane boundary. Analytic expressions for the reflection coefficients are obtained. Numerical calculations have been made, for a particular model, in case of incidentP I wave. Effect of viscoelasticity and viscosity on the reflection coefficients has also been exhibited.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00879471
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  • 7
    Electronic Resource
    Electronic Resource
    Reflection and refraction of plane harmonic waves at an interface between elastic solid and porous solid saturated by viscous liquid (1992)
    Springer
    Pure and applied geophysics 138 (1992), S. 249-266 
    Details
    ISSN: 1420-9136
    Keywords: Poroelastic ; viscous liquid ; dissipative ; frequency viscosity ; Poiseuille flow ; Bessel-Kelvin functions ; porosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A general solution of Biot's field equations governing small motions of a porous solid saturated by viscous liquid is employed to study the reflection and refraction at the interface between an elastic solid and a liquid-saturated porous solid. The incident wave is assumed to be plane and homogeneous, propagating through the isotropic elastic solid. The poroelastic solid is considered to be a dissipative one. Amplitude and energy ratios are computed numerically for a particular model. With first-order corrections for the porosity of solid and viscosity of liquid, the limiting cases of low and high frequencies are computed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00878898
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  • 8
    Electronic Resource
    Electronic Resource
    Growth of Micropipe-Free Single Crystal Silicon Carbide (SiC) Ingots Via Physical Vapor Transport (PVT) (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 527-529 (Oct. 2006), p. 39-42 
    Details
    ISSN: 1662-9752
    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 move towards commercialization of SiC based devices places increasing demands on thequality of the substrate material. While the industry has steadily decreased the micropipe (MP) levels incommercial SiC substrates over the past years, the achievement of wafers that are entirely free of MPsmarks an important milestone in commercialization of SiC based devices. We present the results of astudy for controlling the nucleation and propagation of MP defects in SiC ingots grown via PVT. Ourstudies confirm that during bulk growth of SiC, foreign polytype nucleation such as 3C-polytype occursat the initial stages of growth (nucleation period) and/or during subsequent growth in the presence offacets. Results in this investigation suggest that polytype instability during crystal growth adverselyimpacts the MP density. Based on this key concept, growth conditions for nucleation and growth stageswere optimized. These conditions were subsequently implemented in an innovative PVT growthenvironment to achieve a growth technique with highly effective polytype control. Under continuouslymodulated growth conditions, MPs induced by seed material and/or formed during the growth wereeliminated. 2-inch and 3-inch diameter MP-free (zero MP density) conducting 4H-SiC ingots wereobtained
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.527-529.39.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Reducing blood loss at open myomectomy using triple tourniquets: A randomised controlled trial (2005)
    Oxford, UK and Malden, USA : Blackwell Science Ltd
    BJOG 112 (2005), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objectives  To evaluate triple tourniquets in controlled conditions and for the first time to investigate the hypothesis that leaving a semi-permanent tourniquet around the uterine artery reduces post-operative bleeding from the uterine incisions.Design  A randomised controlled trial.Setting  Two University teaching hospitals.Population  Twenty-eight patients with symptomatic fibroids and uterine sizes ranging from 14 to 24 weeks of gestation undergoing open myomectomy.Methods  A number 1 polyglactin suture was tied around the cervix to occlude the uterine arteries, and polythene tourniquets were tied around the infundibulopelvic ligament to obstruct the ovarian vessels. At the end of the procedure, the ovarian ties were released but the uterine artery suture remained in situ.Main outcome measures  Intra-operative blood loss, post-operative blood loss, blood transfusion rates, operative morbidity, uterine blood flow and ovarian function.Results  There was significantly less blood lost in the tourniquet group than in the control group (difference between means 1870 mL, 95% CI 1159–2580 mL, P 〈 0.0001; transfusion rates of 7% and 79%, P= 0.0003). The volume in the pelvic drain 20 min post-operatively and after 48 hours failed to reach statistical significance between the two groups (P= 0.10 and P= 0.165). There were no differences in uterine artery Doppler resistance indices at five days (P= 0.54), six weeks (P= 0.47), three months (P= 0.49) and at six months (P= 0.18). Day two serum FSH concentrations after surgery were unchanged (P= 0.45), compared with baseline values.Conclusions  Triple tourniquets are effective in reducing bleeding and transfusion rates. There appears no obvious adverse effect on uterine perfusion or ovarian function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.2004.00430.x
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  • 10
    Electronic Resource
    Electronic Resource
    Outpatient hysteroscopy: traditional versus the ‘no-touch’ technique (2005)
    Oxford, UK and Malden, USA : Blackwell Science Ltd
    BJOG 112 (2005), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective  To assess whether outpatient hysteroscopy using the ‘no-touch’ technique confers any advantages in terms of patient discomfort over the traditional technique.Design  Prospective randomised controlled study.Setting  Outpatient hysteroscopy clinic in a large university undergraduate teaching hospital.Population  All women referred for outpatient hysteroscopy in a 12-month period.Interventions  Women were randomised to undergo either traditional saline hysteroscopy requiring the use of a speculum and tenaculum, or a ‘no-touch’ vaginoscopic hysteroscopy which does not require a speculum or tenaculum. Each group was further subdivided to have hysteroscopy with either a 2.9-mm or 4-mm hysteroscope. Patients were asked to complete pre- and postprocedure questionnaires ranking pain scores.Main outcome measures  The relative success of each of these techniques, requirement for local anaesthetic and pain scores at different times during the hysteroscopy were recorded at the end of the procedure. The time taken to carry out each procedure was also measured.Results  One hundred and twenty women were recruited in this study: 60 were randomised to traditional hysteroscopy and 60 to ‘no-touch’ hysteroscopy. The overall success rate for hysteroscopy was 99%. There was no significant difference in the requirement for local anaesthetic between the two groups, but those who underwent ‘no-touch’ hysteroscopy with a 2.9-mm hysteroscope had the lowest requirement of local anaesthetic (10% compared with 27% in the no-touch hysteroscopy with a 4-mm hysteroscope group). The time taken to perform hysteroscopy and biopsy was significantly shorter with ‘no-touch’ hysteroscopy (5.9 vs 7.8 min; difference 1.9, 95% CI 0.7–3.1). There were no differences in pain scores between the groups at different times during hysteroscopy.Conclusions  ‘No-touch’ or vaginoscopic hysteroscopy is significantly faster to perform than the traditional technique. Although there was no difference in pain scores between the two techniques, local anaesthetic requirements were least in those who underwent ‘no-touch’ hysteroscopy with a narrow bore hysteroscope.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.2005.00425.x
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