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  • 1
    Electronic Resource
    Electronic Resource
    Fe-Metalloid Metallic Glasses with High Magnetic Flux Density and High Glass-Forming Ability (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 1361-1366 
    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: Fe-based bulk metallic glasses with good soft magnetic softness, high strength andrelatively low material cost should have greatest potential for wide variety of applications amongmany kinds of bulk metallic glasses (BMGs). However, the glass-forming metal elements such as Al,Ga, Nb, Mo and so forth in the Fe-based BMGs significantly decrease saturation magnetization (Js)which is a essential property as soft magnetic materials. Since the coexistence of high Js and highglass-forming ability (GFA) has been earnestly desired from academia to industry, however, has beenleft unrealized over many years. Here, we present a Fe76Si9B10P5 bulk glassy alloy exhibiting withunusual combination of high Js of 1.51 T comparable to the Fe-Si-B amorphous alloy ribbons withthickness of about 25 μm in now practical use, because of not-containing the glass-forming metalelements, and high GFA leading to a rod with a diameter of 2.5 mm. This alloy composed of familiarand low-priced elements also has extremely low coercivity which should enable ultra-high efficienttransformers, therefore, has a great advantage for engineering and industry, and thus significantlyimproves energy saving, conservation of earth resources and environment
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.1361.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of the active site structure of Pd and Pd-promoted Mo sulfide catalysts by means of XAFS (2001)
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 8 (2001), S. 645-647 
    Details
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Recently, noble metal catalysts are noted as promising candidates for new super-deep-hydrodesulfurization (HDS) catalysts. In this study, we investigated the structure of Pd particles supported on zeolite and Al2O3 under a sulfidation or reduction condition. From EXAFS analysis, it was found for sulfided Pd catalysts that small Pd sulfide clusters are formed without sintering. It was also revealed that no extensive growth of metal Pd particles occurs in Pd/NaY sulfide catalysts even after a treatment with H2 at 673 K. The dispersion of Pd metal particles is improved by H2/H2S treatment. These results indicate that in the presence of H2S, Pd shows high resistance against particle growth. A comparison of the Mo and Pd K-edge EXAFS spectra for MoSx/Pd-NaY and Pd-NaY catalysts revealed the existence of Mo-Pd bondings by the addition of Mo sulfide, indicating a direct interaction between Mo and Pd sulfides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0909049500017489
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  • 3
    Electronic Resource
    Electronic Resource
    Micro-Scale Orientation Study of RD//〈011〉 Cold Rolling Texture in Steel (2002)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 408-412 (Aug. 2002), p. 1215-1220 
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/06/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.408-412.1215.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Secondary Recrystallization in Grain-Oriented Silicon Steel (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 467-470 (Oct. 2004), p. 853-862 
    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: Mechanism of Goss secondary recrystallization in grain-oriented silicon steel has been investigated by temperature gradient annealing and by in situ observation utilizing synchrotron x-ray topography. The results support the selective growth theory. Migration of Goss grains is controlled by second phase particles (inhibitor) and sharper Goss grains, which have higher frequency of CSL boundaries to the matrix, start to grow preferentially while the other matrix grains are stagnated by inhibitor. CSL boundaries are supposed to have lower grain boundaryenergy, thus suffer lower pinning force from the inhibitor and start to migrate at higher inhibition level. Based on this model, we have made a computer simulation and have found that this model successfully depicts the important features of secondary recrystallization; grain growth behavior of secondary grains, secondary grain size and sharpness of Goss texture
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.467-470.853.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of sedatives on noradrenaline release from the medial prefrontal cortex in rats (1999)
    Springer
    Psychopharmacology 146 (1999), S. 335-338 
    Details
    ISSN: 1432-2072
    Keywords: Key words GABAA receptor ; Propofol ; Midazolam ; NMDA receptor ; Ketamine ; Noradrenaline ; Medial prefrontal cortex ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Rationale: N-Methyl-d-aspartate (NMDA) receptor antagonism and GABAA receptor activation are believed to be critical targets for general anesthetic action. However, as NMDA antagonism of intravenous anesthetic agents causes post-anesthetic emergence reactions such as hallucination and agitation, while the GABAA-mimetic intravenous anesthetic agents do not, these two classes of intravenous anesthetic agents produce differential clinical profiles. Objective: We have investigated the differential effects of the GABAA agonists propofol and midazolam and the NMDA antagonist ketamine on noradrenaline release from the medial prefrontal cortex of the rat using microdialysis, as noradrenergic neurons have a role to play in anesthesia and are known to be important in the control of sleep, attention and learning. Methods: Twenty-one male Wistar rats (200– 270 g) were randomly allocated into three groups: ketamine 100 mg.kg–1 (n=6), propofol 60 mg.kg–1 (n=8) and midazolam 5 mg.kg–1 (n=7) IP. A unilateral guide cannula was implanted stereotaxically into the medial prefrontal cortex under pentobarbital anesthesia (50 mg.kg–1 IP). Forty-eight hours later, a dialysis probe was inserted through the guide cannula, and perfused with an artificial cerebrospinal fluid solution containing 1 mM pargyline. Following an equilibration period, samples of dialysate were collected every 10 min. Noradrenaline content was measured by high-performance liquid chromatography using an electrochemical detector. Results: Anesthesia times, defined as the duration between the loss of righting reflex and recovery, were 24.7±5.6 (SEM), 20.5±1.9 and 25.2±1.5 min for propofol, midazolam and ketamine, respectively (no significant between-group differences). Both GABAA agonists, propofol and midazolam, significantly decreased noradrenaline release (75% and 71% of basal release, respectively). The NMDA antagonist ketamine markedly increased noradrenaline release (413% of basal). Conclusion: These data suggest that different clinical profiles observed with these two classes of sedatives may result from changes in noradrenaline release from the medial prefrontal cortex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002130051125
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  • 6
    Electronic Resource
    Electronic Resource
    Hydrodesulfurization activity of highly dispersed Co sulfide clusters prepared in zeolite cages (2000)
    Springer
    Catalysis letters 67 (2000), S. 171-174 
    Details
    ISSN: 1572-879X
    Keywords: highly dispersed Co sulfide clusters ; thiophene hydrodesulfurization (HDS) ; CVD method ; XAFS ; zeolite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Zeolite-supported highly dispersed Co sulfide clusters are synthesized using Co(CO)3 (NO) as a precursor. The amount of Co inCoSx/zeolite anchored by a CVD technique increases as the Al/Si ratio of the zeolite increases, whereas the activity per Co atomdecreases for thiophene hydrodesulfurization (HDS). When an Na-exchanged USY zeolite is used, the Co sulfide catalyst shows a muchhigher HDS activity than a conventional Co—Mo/Al2 O3 catalyst. It is considered from XAFS and NO adsorption techniques that thehigh HDS activity of CoSx/USY-Na is due to an extremely high dispersion of Co sulfide clusters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019021706546
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  • 7
    Electronic Resource
    Electronic Resource
    A hemodynamic evaluation of propofol/fentanyl compared with isoflurane/fentanyl anesthesia in coronary artery bypass grafting (1999)
    Springer
    Journal of anesthesia 13 (1999), S. 44-47 
    Details
    ISSN: 1438-8359
    Keywords: Key words: Propofol ; Isoflurane ; Coronary artery bypass grafting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005400050021
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  • 8
    Electronic Resource
    Electronic Resource
    Repeated total intravenous anesthesia for a patient with a history of enflurane-induced rhabdomyolysis (1997)
    Springer
    Journal of anesthesia 11 (1997), S. 231-233 
    Details
    ISSN: 1438-8359
    Keywords: Progressive muscular dystrophy ; Rhabdomyolysis ; Total intravenous anesthesia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02480044
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  • 9
    Electronic Resource
    Electronic Resource
    Middle-ear pressure variations during total intravenous anesthesia with propofol, fentanyl, and ketamine (1998)
    Springer
    Journal of anesthesia 12 (1998), S. 17-20 
    Details
    ISSN: 1438-8359
    Keywords: Middle-ear pressure ; Total intravenous anesthesia ; Propofol ; Fentanyl ; Ketamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Purpose As the middle-ear cavity is one of the noncompliant gas-filled cavities, an increase in middle-ear pressure (MEP) instead of volume expansion is observed with inhalation of nitrous oxide (N2O). Changes in MEP cause many complications, such as ear pain, temporary hearing impairment, and postoperative emesis. Therefore, we investigated changes in MEP during total intravenous anesthesia (TIVA) with propofol, fentanyl, and ketamine (PFK) and inhalation of N2O. Methods Twelve patients were anesthetized with PFK until 60 min after the induction of anesthesia, and then N2O (60%) inhalation was started. MEP was measured by impedance audiometry (ranging from −300 daPa to +200 daPa) at 10-min intervals during PFK, and at 2-min intervals after the inhalation of N2O. Results MEP gradually but significantly increased from the preanesthetic value of 16±8 to 34±12 (SEM) daPa 50 min after the induction of PFK. However, MEP did not exceed the normal limit. The values of MEP in all patients were more than 200 daPa within 36 min after the start of inhalation of N2O in oxygen. Conclusion PFK had a minimal effect on MEP, whereas addition of N2O to PFK increased MEP dramatically. Therefore, TIVA, or at least PFK, would be a better choice for patients with middle-ear or upper-airway diseases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02480760
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