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  • 1
    Electronic Resource
    Electronic Resource
    CT and MR findings of torsion of greater omentum: a case report (1997)
    Springer
    Abdominal imaging 22 (1997), S. 45 -46 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Torsion—Greater omentum—Diagnosis—CT—MR.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We report a case of torsion of the greater omentum, which occurred in a 39-year-old man with an adhesive inguinal hernia. Preoperative computed tomography and magnetic resonance (MR) imaging showed a characteristic whirling fatty mass occupying the middle and lower abdomen anteriorly. MR imaging also showed difference of intensities in the twisted omentum, suggesting the presence of the pathological conditions of edema or congestion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900136
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  • 2
    Electronic Resource
    Electronic Resource
    7000 h continuous wave operation of multiple quantum well laser on Si at 50 °C (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 1614-1615 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A 1.55 μm multiple quantum well laser heteroepitaxially grown on Si substrate operates under the severe aging condition of the light output of 5 mW/facet at 50 °C. The laser has been operating for more than 7000 h. The threshold current and the slope efficiency of the laser on Si at 20 °C are 32 mA and 0.19 W/A, respectively. The maximum operation temperature is above 80 °C. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118632
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  • 3
    Electronic Resource
    Electronic Resource
    EFFECTS OF DRAWING STRAIN AND BLUING ON THE FATIGUE STRENGTH OF EUTECTOID STEEL WIRES (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 20 (1997), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— The effects of bluing, associated with drawing strain, on the fatigue strength of eutectoid steel wires have been investigated. The fatigue limit increases by bluing and the increase is more significant with higher drawing strain. The peak in the fatigue limit with regard to the drawing strain in the wires, at a strain of 2.5, disappears after bluing. On the other hand, in the ferritic steel wires investigated for comparison, the fatigue limit gradually increases with the drawing strain up to 7.7. Furthermore, no appreciable change in the fatigue limit due to bluing is found. Based on the results of hardness tests on fatigue specimens with- and without-bluing, it is deduced that the decrease of the fatigue limit beyond the peak drawing strain in the eutectoid steel wire can partly be attributed to insufficient locking of the high-density dislocations by solute atoms. The effect of relaxation of residual stress during bluing is also briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.1997.tb01520.x
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  • 4
    Electronic Resource
    Electronic Resource
    Production of multi-hollow polymer particles by the stepwise acid/alkali method (1997)
    Springer
    Colloid & polymer science 275 (1997), S. 634-639 
    Details
    ISSN: 1435-1536
    Keywords: Key words Multi-hollow particles ; emulsion polymerization ; morphology ; acid swelling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  Recently, we reported that multi-hollow polymer particles can be prepared from carboxylated polymer particles by the stepwise alkali/acid method. In this article, an attempt was made to prepare similar particles from acid-swellable polymer particles by the stepwise treatment with acid and alkali, which was named the stepwise acid/alkali method. The acid-swellable particles were produced by emulsion terpolymerization of styrene, butyl acrylate, and dimethyl 2-amino ethyl methacrylate. The effects of initial pH value, temperature, and time in the acid and alkali treatment processes on the multi-hollow structure were examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003960050129
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of portal-systemic shunt embolization on the basal ganglia: MRI (1997)
    Springer
    Neuroradiology 39 (1997), S. 326-328 
    Details
    ISSN: 1432-1920
    Keywords: Key words Encephalopathy ; Portal-systemic ; Basal ganglia ; Embolization ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report MRI in a patient with portal-systemic encephalopathy, in which the high signal in the basal ganglia on T1-weighted images showed marked resolution after successful embolization of the intrahepatic portal-systemic venous shunt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050417
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  • 6
    Electronic Resource
    Electronic Resource
    A novel process of inosine 5′-monophosphate production using overexpressed guanosine/inosine kinase (1997)
    Springer
    Applied microbiology and biotechnology 48 (1997), S. 693-698 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A novel process for producing inosine 5′-monophosphate (5′-IMP) has been demonstrated. The process consists of two sequential bioreactions; the first is a fermentation of inosine by a mutant of Corynebacterium ammoniagenes, and the second is a unique phosphorylating reaction of inosine by guanosine/inosine kinase (GIKase). GIKase was produced by an Escherichia coli recombinant strain, MC1000(pIK75), which overexpressed the enzyme up to 50% of the total cellular protein. The overproducing plasmid, pIK75, which was randomly screened out from deletion plasmids with various lengths of intermediate sequence between the E. coli trpL Shine-Dalgarno sequence, derived from the vector plasmid, and the start codon of the GIKase structural gene. In pIK75, the start ATG was placed 16 bp downstream of the trpL Shine-Dalgarno sequence under the control of the E. coli trp promoter. Fermentation of inosine and its phosphorylation were sequentially performed in a 5-l jar fermenter. At the end of inosine fermentation by C. ammoniagenes KY13761, culture broth of MC1000(pIK75) was mixed with that of KY13761 to start the phosphorylating reaction. Inosine in the reaction mixture was stoichiometrically phosphorylated, and 91 mM 5′-IMP accumulated in a 12-h reaction. This new biological process has advantages over traditional methods for producing 5′-IMP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530051117
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  • 7
    Electronic Resource
    Electronic Resource
    A Parametrization of Isometric Immersions between Hyperbolic Spaces (1997)
    Springer
    Geometriae dedicata 65 (1997), S. 31-46 
    Details
    ISSN: 1572-9168
    Keywords: isometric immersion ; hyperbolic space form ; fundamental theorem for hypersurfaces ; linear partial differential equation ; Klein group
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We parametrize the space of isometric immersions of the hyperbolic n -space into the hyperbolic ( n +1)-space by a family of properly chosen (at most) countable n -tuples of real-valued functions. This is an answer to the problem posed by Nomizu in 1973. We also construct a one-parameter family of deformable isometric immersions from the quotient spaces of the hyperbolic 2-plane modulo and some totally discontinuous subgroups of isometries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004960317128
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  • 8
    Electronic Resource
    Electronic Resource
    Oxygen gas-sensing behaviour of V2O5–SnO–TeO2 glass (1997)
    Springer
    Journal of materials science 32 (1997), S. 5243-5247 
    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 The d.c. conductivity, σ, and the oxygen gas-sensing behaviour of V2O5–SnO–TeO2 glass prepared by press-quenching were studied in argon and oxygen gas atmospheres at temperatures ranging from 303–473 K. The glass of 50V2O5·20SnO·30TeO2 (mol %) was n-type semiconducting. The high-temperature conductivity was lower in oxygen and higher in argon than that in air. This was explained by the V4+ ions in the glass being oxidized by oxygen which had diffused into the glass, resulting in an increase in V5+ with time. The experimental relationship between σ and oxygen partial pressure, PO2, agreed quantitatively with the theoretical relation σ∝P-1/4O2. Changes in conductivity by switching the atmospheres between oxygen and argon gases were found to be reproducible. From the data of these dynamic changes, the oxygen gas sensitivity, S, at 473 K was obtained to be 1.3 in oxygen atmosphere. The dynamic changes could be quantitatively explained by an oxygen diffusion model. Throughout these discussions, the present tellurite glass was found to possess a potential applicability as an oxygen gas sensor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018698207496
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