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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Medical microbiology and immunology 141 (1955), S. 376-383 
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Nachgewiesen wurde die Möglichkeit, die Filamentisierung von E. coli mittels des Sauerstoffes hervorzurufen. Dieses Phänomen, welches schon nach 1 Std einsetzt, erreicht seinen Höhepunkt am Ende der dritten Stunde, um dann zurückzugehen, bis es nach 12 Std überhaupt nicht mehr wahrzunehmen ist. Besprochen wurde der Mechanismus der Wirkung des Sauerstoffes unter Mitberücksichtigung der neuesten wissenschaftlichen Feststellungen über die Filamentisierung der Bakterien.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Medical microbiology and immunology 168 (1980), S. 111-118 
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Mouse hind footpad inoculation with 1×107 viablePseudomonas aeruginosa cells produces a long-lasting, self-limiting disease process characterized by a bacterial multiplication that parallels the swelling of the infected footpad. Regional popliteal and inguinal lymph nodes and spleen of infected animals show cellular modifications which are almost entirely due to lymphocyte proliferation, as indicated by spontaneous DNA synthesis experiments in vitro. Furthermore, mice which had been infected in their footpad either 20 or 27 days previously and challenged withP. aeruginosa antigens into the controlateral footpad show, 24 h later, a marked increase in regional popliteal lymph node weight, indicating the development of delayed hypersensitivity toPseudomonas antigens.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Medical microbiology and immunology 170 (1982), S. 191-199 
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In mice repeated systemic injections ofPseudomonas aeruginosa viable cells were able to induce a specific delayed-type hypersensitivity, which was evaluated as increase both in footpad swelling and in the weight of popliteal lymph nodes, after a challenge in the footpad. Unfractionated spleen cells or T lymphocyte-enriched spleen cells from sensitized donors were able to specifically transfer the delayed-type hypersensitivity to syngeneic recipients but failed to protect them against a lethal challenge withP. aeruginosa. In contrast, serum or B lymphocyte and macrophage-enriched spleen cells from the same donors were capable of transferring protective immunity but failed to induce any delayed-type hypersensitivity reaction in the recipients. These results clearly show that in systemicP. aeruginosa infections a dissociation between delayed-type hypersensitivity and acquired cellular resistance occurs.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 25 (1981), S. 307-310 
    ISSN: 1432-0630
    Keywords: 79.20 ; 68.55 ; 61.80 ; 34
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Estimates are given for the distribution of the depth of origin of sputtered atoms in the low-fluence limit, as well as the corresponding distribution of atoms sputtered into a given energy interval. The former distribution is well described by an exponential profile, with the characteristic depth being consistent with previous results. The latter distribution is characterized by an energy-dependent depth scale and a shape that varies from exponential at low sputtered-atom energies to inverse-power form at higher energies.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1319-1326 
    ISSN: 0392-6737
    Keywords: Impact phenomena, including electron spectra and suputering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si confrontano il coefficiente di erosione ottenuto prendendo in considerazione una dipendenza spaziale della funzione che descrive l'energia depositata nella targhetta (dallo ione incidente) con il coefficiente ottenuto assumendo costante questa funzione (uguale al suo valore in superficie). A questo scopo è stata considerata una dipendenza spaziale esplicita (una gaussiana) per la funzione energia depositata. I risultati indicano che i due coefficienti differiscono sensibilmente nel caso di ioni incidenti ad alto numero atomico e/o per piccoli valori del rapporto di massa targhetta/ione.
    Abstract: Режюме Рассматривается пространственная зависимость (гауссова типа) функции выделенной энергии, ьтобы сравнитъ выход раслыления, полученный с учетом всей выделеннои в мишени энергии, с выходом распыления, полученным в предположении постоянной функции выделенной энергии, равной величине выделенной энергии на поверхости. Полученные режультаты покажывают, что два выхода существенно отличаются для болыьших атомных номеров падающих ионов и/илн для малых отношений масс атомов мишени и падаюшщих ионов.
    Notes: Summary An explicit spatial dependence (a Gaussian) of the depositedenergy function has been considered in order to compare the sputtering yield obtained by taking into account all the energy deposited inside the target with that obtained by assuming the deposited-energy function throughout constant, namely equal to its value at the surface. The results indicate that the two yields differ sensibly for high incident-ion atomic number and/or for small target/ion mass ratio.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 5 (1985), S. 464-470 
    ISSN: 0392-6737
    Keywords: Impact phenomena, including electron spectra and sputtering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Il meccanismo di erosione di solidi durante il bombardamento di ioni leggeri di bassa energia può essere spiegato nell'ambito della teoria del transporto assumendo che solo i rinculanti primari contribuiscono all'erosione. L'approccio teorico mostra che il coefficiente di erosione può esprimersi in termini di una funzione universale assumendo un'opportuna variabile energetica adimensionale. Infatti il coefficiente di erosione può essere ricondotto ad un' espressione in cui una funzione della sola energia, comune a tutte le combinazioni ione-bersaglio, è moltiplicata per una fattore costante differente per ogni combinazione. Questa espressione, priva di parametri aggiustabili, fornisco una buona approssimazione per i dati sperimentali. Ulteriori sviluppi sono discussi in relazione al fatto ai dati sperimentali non sono strettamente riconducibili ad una fuzione universale.
    Notes: Summary The mechanism wherenism whereby heavy solids are sputtered by lowenergy light ions can be explained by a linear-transport theory, by assuming only primary recoils as candidate for sputtering. It is shown that, from a theoretical point of view, scaling properties of the sputtering yield can be introduced if the appropriate dimensionless energy variable is assumed. In fact, the yield expression can be reduced to a formulation in which an energy function common to all the target-ion combinations is multiplied by a constant factor different for each combination. This expression, free from any kind of fitting parameter, gives a good approximation to the experimental data. Further developments are discussed in relation to the spreading of experimental points which do not exibit strict scaling properties.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 9 (1987), S. 893-900 
    ISSN: 0392-6737
    Keywords: Atom, molecule and ion impact
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto È stata derivata per la prima volta l’espressione corretta nel regime lineare dell’energia media delle particelle emesse da solidi durante bombardamento ionico. I risultati teorici sono stati confrontati con alcuni dati ottenuti recentemente mediante simulazione al calcolatore. È stato inoltre evidenziato che l’energia media delle particelle emesse può essere calcolata in modo preciso solo se si determinano contemporaneamente l’energia massima delle particelle emesse e la soglia per il processo di emissione.
    Abstract: Резюме Впервые выводится правильное выражение для средней энергии распыленных частиц в линейном режиме. Теоретические результаты сравниваются с недавними данными численного моделирования на ЭВМ. Показывается, что средняя распыленная энергия может быть оценена только при условии, если точно определены одновременно максимальная энергия распыленных частиц и порог для процесса распыления.
    Notes: Summary The correct expression for the average energy of sputtered particles in the linear regime has, for the first time, been derived. The theoretical results are compared with recent data from computer simulation studies and it is shown that the average sputtered energy can only be evaluated by precisely determining both the maximum energy and the threshold of the sputtered particles.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 15 (1993), S. 1159-1174 
    ISSN: 0392-6737
    Keywords: Impact phenomena (including electron spectra and sputtering)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The emission-oriented integral form of Boltzmann transport equation is applied to the sputtering phenomenon. It is shown that the central quantity in the formulation, namely the characteristic mean free path of the phenomenon, can be the low-energy transport mean free path. The same mean free path gives a measure of the mean escape depth as derived in experiments and computer simulation studies. Finally, the sputtering yields, calculated by using the same mean free path, when compared with the experimental results, show an evident improvement with respect to the Sigmund theory.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 75-88 
    ISSN: 0392-6737
    Keywords: Impact phenomena (including electron spectra and sputtering)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Neumann's expansion of the integral form of the Boltzmann transport equation is used to estimate the contribution of different generations of recoils to sputtering. By considering the flux generated by backscattered ions it is shown that primary recoils are, in the region of low energy (few keV), the main contribution to sputtering.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 18 (1996), S. 873-881 
    ISSN: 0392-6737
    Keywords: Impact phenomena (including electron spectra and sputtering)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The energy distribution of reflected ions at normal incidence of the primary beam on the target surface is obtained as a result of approximate solution of the Boltzmann equation by the method of discrete streams. This method gives the opportunity to avoid the problem of negative distribution function, arising in the generally applied method of spherical harmonics, and to present the final result in analytical form. The analysis is performed for a power scattering cross-section and the theoretical energy distribution demonstrates one maximum when the ion mass is equal to the mass of a target atom, and two maxima when the ion mass is much less than the mass of a target atom.
    Type of Medium: Electronic Resource
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