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  • 1
    Electronic Resource
    Electronic Resource
    Pseudostructural disorder in metallic solid solutions: A study of Ag−Cd and Ag−Mg random alloys (1990)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 12 (1990), S. 1431-1441 
    Details
    ISSN: 0392-6737
    Keywords: Nonlocalized single-particle electronic states
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We have investigated some Ag−Cd and Ag−Mg alloys within the KKR-CPA framework in order to give insights on their electronic properties. Notwithstanding Cd and Mg have different electronic configurations it appears that their effect on the pure Ag is quite the same. In fact measurements on their optical properties and Fermi surface indicate that most of the spectra and Fermi surface parameters are comparable. In the meantime it also appears that they cannot be classified as rigid band alloys. From the results we obtain it is possible to give sensible explanations to this peculiar behaviour in terms of the angularmomentum channels of the coherent scattering amplitude obtained within the KKR-CPA theory, the main conclusion being thats- andp-like states remain essentially free-electron-like, whiled-like states are very much perturbed by the alloying.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02452110
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  • 2
    Electronic Resource
    Electronic Resource
    Relativistic korringa-kohn-rostoker CPA theory: Extension tol=3 scattering channel (1990)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 12 (1990), S. 1453-1463 
    Details
    ISSN: 0392-6737
    Keywords: Nonlocalized single-particle electronic states
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We have extended the well-known relativistic KKR-CPA theory up tol≤3 angular momentum, in order to make this framework suitable to deal with rare-earth alloys. However, such an extension has also relevance in judging the convergence of the KKR-CPA calculations even for those atomic species with empty valencef-states. To do that we worked out the transformation from the usual real spherical harmonics to the cubic double-point group representatin. We have tested the present theory and corresponding codes by computing the electronic structure of Cu0.75−Au0.25 and by comparing our results with earlierl≤2 R-KKR-CPA calculations. In order to reduce the large amount of computing time required, we have also used a new technique for the Brillouin zone integration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02452112
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  • 3
    Electronic Resource
    Electronic Resource
    Electronic properties of Pt-W substitutionally random alloys (1990)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 12 (1990), S. 1509-1517 
    Details
    ISSN: 0392-6737
    Keywords: Nonlocalized single-particle electronic states
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We have investigated the electronic states of some Pt-W alloys by means of the relativistic KKR-CPA theory in order to gain some insights on the many interesting physical properties of such a system. In particular we were interested in studying the role of the Fermi surface topology in the ordering phenomena shown by this alloy. It turns out that the broadening of the states at the Fermi energy makes the Fermi surface concept questionable. Reasons for that are understood in terms of our scheme and approximations, even though to give an exhaustive answer one should pursue the full-charge self-consistency obtainable in the SCF-KKR-CPA theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02452119
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  • 4
    Electronic Resource
    Electronic Resource
    Detection of potential fields source boundaries by enhanced horizontal derivative method (2001)
    Oxford, UK : Blackwell Science Ltd
    Geophysical prospecting 49 (2001), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: A high-resolution method to image the horizontal boundaries of gravity and magnetic sources is presented (the enhanced horizontal derivative (EHD) method). The EHD is formed by taking the horizontal derivative of a sum of vertical derivatives of increasing order. The location of EHD maxima is used to outline the source boundaries. While for gravity anomalies the method can be applied immediately, magnetic anomalies should be previously reduced to the pole. We found that working on reduced-to-the-pole magnetic anomalies leads to better results than those obtainable by working on magnetic anomalies in dipolar form, even when the magnetization direction parameters are not well estimated. This is confirmed also for other popular methods used to estimate the horizontal location of potential fields source boundaries.The EHD method is highly flexible, and different conditions of signal-to-noise ratios and depths-to-source can be treated by an appropriate selection of the terms of the summation. A strategy to perform high-order vertical derivatives is also suggested. This involves both frequency- and space-domain transformations and gives more stable results than the usual Fourier method.The high resolution of the EHD method is demonstrated on a number of synthetic gravity and magnetic fields due to isolated as well as to interfering deep-seated prismatic sources. The resolving power of this method was tested also by comparing the results with those obtained by another high-resolution method based on the analytic signal. The success of the EHD method in the definition of the source boundary is due to the fact that it conveys efficiently all the different boundary information contained in any single term of the sum.Application to a magnetic data set of a volcanic area in southern Italy helped to define the probable boundaries of a calderic collapse, marked by a number of magmatic intrusions. Previous interpretations of gravity and magnetic fields suggested a subcircular shape for this caldera, the boundaries of which are imaged with better detail using the EHD method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2478.2001.00235.x
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  • 5
    Electronic Resource
    Electronic Resource
    Blood substitutes: is it time for work process redesign in transfusion medicine? (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 53 (1998), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1998.tb15141.x
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  • 6
    Electronic Resource
    Electronic Resource
    The role of remanent magnetization in the Southern Italian crust from aeromagnetic anomalies (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Terra nova 2 (1990), S. 0 
    Details
    ISSN: 1365-3121
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Induced magnetization in the intermediate to deep crust is insufficient to justify regional magnetic anomalies. This is an unresolved problem, that cannot be completely explained by induced and viscous magnetization. In this context, the contribution of remanent magnetization in the Southern Italian Region has been investigated from a study of long-wavelength magnetic anomalies. By means of a shape analysis, several anomalies were found which indicate a total magnetization vector direction different from the induced one. From the good correspondence between these deduced declinations with palaeomagnetic and palaeotectonic data, we infer a remarkable manifestation of remanent magnetization in the intermediate-crust.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3121.1990.tb00128.x
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  • 7
    Electronic Resource
    Electronic Resource
    New 3–D investigative techniques for understanding the earth's interior (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Terra nova 2 (1990), S. 0 
    Details
    ISSN: 1365-3121
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The 3–D model of the Earth, as obtained with a brand new investigative technique, is discussed. However an international collaborative project, involving researchers from the whole world, has uncovered a severe systematic error in the new data acquisition system making the results of this new model highly questionable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3121.1990.tb00135.x
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  • 8
    Electronic Resource
    Electronic Resource
    Increased intestinal sugar permeability after challenge in children with cow's milk allergy or intolerance (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 49 (1994), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The diagnosis of cow's milk allergy or intolerance (CMAI) is based on clinical improvement on exclusion diet and relapse after challenge with milk. The aim of this work was to investigate the value of the cellobiose/mannitol (C/M) sugar permeability test, performed before and after cow's milk challenge, as a tool for the diagnosis of CMAI. Thirty-two patients underwent milk challenge at a median age of 13 months (range 3–84 months). A dual sugar (C/M) permeability test with an iso-osmolar solution was performed before and 24 h after challenge. Of the 10 patients who developed symptoms after challenge, nine showed increased postchallenge C/M ratio, whereas such an increase was observed in only one of the 22 nonrelapsed subjects. The postchallenge C/M ratio increase in relapsed subjects is to be attributed to both higher cellobiose and lower mannitol urinary excretion. These results suggest the use of the sugar permeability test, in addition to clinical observation, as an aid in the evaluation of provocation tests in infants with suspected CMAI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1994.tb00816.x
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  • 9
    Electronic Resource
    Electronic Resource
    Plasmapheresis combined with lymphocytapheresis and cytotoxic drugs as a therapeutic modality in neuroimmunological diseases (1984)
    Springer
    Neurological sciences 5 (1984), S. 35-40 
    Details
    ISSN: 1590-3478
    Keywords: plasmapheresis ; myasthenia gravis ; inflammatory myopathies ; polyneuropathies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Si ritiene che il possibile effetto “rebound” che consegue alla plasmaferesi sia dovuto all'incremento di anticorpi e/o di immuno-complessi. Per prevenire tale effetto si utilizzano farmaci steroidei e immunosopressori; la linfocitoaferesi è stata applicata in diversi pazienti, ma per non più di 10 sedute. Gli AA. hanno trattato 50 pazienti affetti da miastenia, polimiosite, polineuropatie croniche disimmuni e polineuropatie da immuno-complessi con buoni risultati a distanza in 35 casi; un effetto “rebound” è stato osservato soltanto nei casi in cui non era stato instaurato o era stato interrotto inopportunamente un trattamento immunosoppressivo. In 8 pazienti che erano stati trattati con plasmaferesi associata a soli farmaci steroidei, dopo alcune recidive sintomatologiche della malattia, è stato instaurato uno schema terapeutico che prevedeva cortisonici, immunosopressori e linfocitoaferesi associati alla plasmaferesi: in 7 casi sono state così ottenute delle remissioni di lunga durata. Sulla scorta di tale esperienza clinica si ritiene fondata l'ipotesi di un sinergismo tra plasmaferesi e trattamento immunosoppressivo.
    Notes: Abstract Rebound after plasmapheresis is thought to be due to enhanced antibody and/or immune complex production. To prevent rebound a combination of steroids and immunosuppressive drugs has been used: lymphocytapheresis was employed in most patients, for not more than 10 sessions. 50 patients with myasthenia gravis, inflammatory myopathy, chronic dysimmune polyneuropathy and immune complex polyneuropathy have been treated and longlasting benefits obtained in 35 patients. Rebound effects were observed only when cytotoxic drugs were not given or discontinued too soon. 8 patients who had been treated by plasmapheresis combined with steroids alone, after some recurrences of their disease, were switched to cytotoxic drugs, steroids and lymphocytapheresis combined with plasma exchange: in this group 7 patients eventually gained long lasting remissions. Our clinical experience strongly supports the hypothesis of a synergy between plasmapheresis and immunosuppressive measures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02043967
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