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  • 11
    Digitale Medien
    Digitale Medien
    Local spin-density functional theory of noncollinear magnetism (invited) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3482-3486 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We apply spin-density functional theory (SDF) to describe noncollinear magnetism; i.e., self-consistent energy-band calculations based on the local approximation to SDF theory are presented in which the magnetization associated with different atoms in a unit cell is allowed to point along different, noncollinear directions. In contrast to older work (e.g., by You and Heine and by Oguchi, Terakura, and Hamada) the present calculations are (1) self-consistent, (2) provide the total energy, and (3) provide the spin-quantization axes. In our applications we deal with noncollinear antiferromagnets γ-FeMn and perovskites Mn3GaN and show that their total energies are minimized in tetrahedral and triangular magnetic structures, respectively, first proposed by Kouvel and Kasper.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.340744
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  • 12
    Digitale Medien
    Digitale Medien
    The control of post-thoracotomy pain. A comparative evaluation of thoracic epidural fentanyl infusions and cryo-analgesia (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 43 (1988), S. 0 
    Details
    ISSN: 1365-2044
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: This is a comparative study of two methods to relieve postoperative thoracotomy pain. Continuous thoracic epidural infusion of fentanyl produced superior analgesia when compared with cryo-analgesia of the relevant thoracic nerves. Linear analogue pain scores were consistently lower in the epidural group reaching significance (p 〈 0.05) at 32 and 40 hours after operation. All 36 patients in the cryo-analgesia group required additional analgesia, while 12 out of the 32 patients in the epidural group did not. This difference was significant at p 〈 0.001. Respiratory and cardiovascular measurements were similar in both groups and the only side effect attributable to the epidural fentanyl was itching but this was not a problem.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2044.1988.tb05757.x
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  • 13
    Digitale Medien
    Digitale Medien
    A comparison of oxygen therapy devices used in the postoperative recovery period (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 43 (1988), S. 0 
    Details
    ISSN: 1365-2044
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Seventy-one patients scheduled to undergo upper or lower abdominal surgical procedures were allocated at random to one of seven treatment groups: in the recovery room they were to receive oxygen via a 40% Ventimask with 10 litres/minute oxygen flow, or via either a Hudson mask or a nasal cannula with 3,6 or 9 litres/minute oxygen flow. The 40% Ventimask gave the most consistent, satisfactory postoperative values of PaO2 but the much cheaper nasal cannula at 6 or 9 litres/minute was generally adequate in conscious patients. The performance of the intermediately priced Hudson mask was similar to that of the nasal cannula at these flows. The unconscious state was associated with a 45% lower PaO2 than the rousable or awake states. Differences between the treatments with regard to postoperative PaCO2 were small and non-significant. The nasal cannula with 6 litres, minute humidified oxygen flow is recommended for routine treatment, and the Ventimask for unconscious patients.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2044.1988.tb05483.x
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  • 14
    Digitale Medien
    Digitale Medien
    Selective oxygen leak (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 41 (1986), S. 0 
    Details
    ISSN: 1365-2044
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A case is described where a patient received less oxygen than was set on the Rotameters. The cause was traced to a selective leak of oxygen via an open cyclopropane needle valve. Several recommendations are put forward to prevent a recurrence.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2044.1986.tb12964.x
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  • 15
    Digitale Medien
    Digitale Medien
    The Immunoglobulin Superfamily-Domains for Cell Surface Recognition (1988)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Immunology 6 (1988), S. 381-405 
    Details
    ISSN: 0732-0582
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Biologie , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.iy.06.040188.002121
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  • 16
    Digitale Medien
    Digitale Medien
    Cell-Surface Anchoring of Proteins Via Glycosyl-Phosphatidylinositol Structures (1988)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biochemistry 57 (1988), S. 285-320 
    Details
    ISSN: 0066-4154
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Chemie und Pharmazie , Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.bi.57.070188.001441
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  • 17
    Digitale Medien
    Digitale Medien
    Molecular complexes of nucleosides and nucleotides with a monomeric cationic porphyrin and some of its metal derivatives (1985)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 107 (1985), S. 8179-8186 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja00312a061
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  • 18
    Digitale Medien
    Digitale Medien
    Transition-metal monoxides: Band or Mott insulators? (invited; abstract) (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3042-3042 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We argue that the widely held view that the transition-metal monoxides are Mott insulators is incorrect. Self-consistent spin-polarized energy-band calculations indicate that MnO and NiO are ordinary band insulators, and that FeO and CoO, while conducting in the local-spin-density approximation, satisfy the condition required for insulating behavior due to the development of an orbital magnetic moment. Our picture of the monoxides is supported by a variety of experimental data. The fundamental question raised by this work is the importance of charge fluctuations, or equivalently, of ionic configurations. The distinction between our band picture and the conventional picture based on ionic configurations (the energy price for which is the Coulomb integral "U'') is particularly clear for the variation of the Néel temperature across the monoxide series. Perturbation theory indicates that T(Néel) varies inversely with U in the conventional theory, but inversely with the exchange splitting in the band picture. Since the exchange splitting tends linearly toward zero across the series, whereas U is constant or increases, the increase by a factor of five of T(Néel) across the series is more naturally explained by the band picture.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.335206
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  • 19
    Digitale Medien
    Digitale Medien
    Intra-vascular thrombosis associated with dental ultrasound (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 16 (1987), S. 0 
    Details
    ISSN: 1600-0714
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Abstract Ultrasonic instruments used in dentistry generally operate at frequencies of 25 to 42 kHz. A wire oscillating at these ultrasonic frequencies immersed in a liquid produces local flow patterns termed acoustic microstreaming. Large shear forces are produced which arc able to rupture erythrocytes and platelets both in vitro and in vivo. This results in activation of the blood coagulation system with subsequent thrombus formation. The probe tip of an ultrasonic sealer was positioned to touch a mammalian mesenteric artery. The probe was operated for 10 to 20 s at a displacement amplitude of 15 μm. Acoustic microstreaming occurred which disturbed blood flow and this microstreaming ceased when the power was switched off. After continued operation of the probe, thrombi were formed against the vessel wall with fragments embolising downstream. These thrombi eventually grew to occlude the vessel. Furthermore, an in situ model demonstrated that acoustic energy was transmitted through the tooth during typical ultrasonic scaling procedures. As a consequence of these observations, it is possible that acoustic microstreaming fields may be generated within the blood vessels entering the tooth apex which arc large enough to induce platelet damage. Therefore there is a potential hazard from the use of the ultrasonic sealer which may induce similar thrombi formation within the pulpal or perapical tissues of the teeth. If this were to occur it could result in tooth death which might not become evident until a long time after the ultrasonic exposure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0714.1987.tb01489.x
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  • 20
    Digitale Medien
    Digitale Medien
    Effect of Fat Source and Color of Lean on Acceptability of Beef/Pork Patties (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 51 (1986), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Twelve beef/pork meat blends were made from lean of mature beef and dark or mature pork carcasses. Meat blends containing about 20% beef fat were rated higher for appearance scores by a consumer panel than blends made with 20% pork fat. Visual acceptance of beef/pork patties was accomplished via use of all-beef fat and additionally by extending mature beef (MB) with mature pork (MP) or dark pork lean (DP). Agtron calorimetry scores indicate a minimum of 20% MB lean extended with 60% MP was needed to create the appropriate red color attractive to consumers. Use of 60% MP lean with about 20% beef fat resulted in patties acceptable to consumers for visual appearance and eating satisfaction.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1986.tb13943.x
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