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  • 1980-1984  (4)
  • 1
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Abnormally high serum levels of the soluble receptor of human T lymphocytes for sheep erythrocytes were found, by electroimmunodiffusion, in patients with carcinoma or other solid tumors, leukemia, lymphoma, uremia and lepromatous leprosy.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 1 (1982), S. 49-69 
    ISSN: 0392-6737
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Quando vapori di potassio sono illuminati dalla luce di un laser a colorante risonante con la transizione fondamentale 4S→4P, si osservano transizioni sia da livelli atomici molto alti, sia dalivelli molecolari. In questo articolo si descrive uno studio spettroscopico di questi fenomeni e si dà la prova sperimentale che il meccanismo responsabile della popolazione di alcuni dei livelli non direttamente eccitati dal laser richiede la creazione di un plasma nel vapore.
    Abstract: Резюме Обпучение паров калия лазером на красителях с основными переходами 4S→4P приводит к возбуждению высоколежащих атомных и молекулярных состояний. В этой работе мы сообщаем резулбтаты спектроскопических исследований этого явления и экспериментальное подтверждение, что механизм, ответственный за заселение некоторых уровней, в результате не прямого возбуждения лазером, включает образование плазмы в паре.
    Notes: Summary The illumination of potassium vapour by means of a c.w. dye-laser resonant with the fundamental 4S→4P transitions results in the excitation of high-lying atomic and molecular states. In the present paper we report a spectroscopic study of this phenomenon and experimental evidence that the mechanisms responsible for the population of some of the levels not directly excited by the laser involve the creation of a plasma in the vapour.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 1 (1982), S. 489-502 
    ISSN: 0392-6737
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Sono state osservate la bistabilità assorbitiva intrinseca e l’isteresi nel caso stazionario, operando alle frequenze delle microonde. Si presenta una teoria che tiene conto della forma gaussiana del modo fondamentale eccitato nel risuonatore e che è confrontata con i risultati sperimentali.
    Abstract: Резюме На микроволновых пастотах наблюдаются внутренняя абсорбционная бистабильность и гистерезисные циклы в стационарном режиме. Предлагается теория, которая учитывает гауссову форму основной моды, возбужденноц в резонаторе, и которая сравнивается с экспериментальными резулстатами.
    Notes: Summary Intrinsic absorptive bistability and hysteresis cycles in a steady-state regime are obtained at microwave frequencies. A theory is presented which takes into account the Gaussian shape of the fundamental mode excited into the resonator and is compared with the experimental results.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 3 (1984), S. 673-681 
    ISSN: 0392-6737
    Keywords: Atomic and molecular measurement and techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si studia il comportamento di, un risuonatore di zaffiro alla frequenza di 50 GHz ed a temperature variabili tra 20 e 850 °C. Si danno le misure del coefficiente termico della frequenza di risonanza tra 20 e 850°C e del fattore di merito a 850°C. Si forniscono dettagli sul montaggio del risuonatore in una struttura aperta, priva di pareti metalliche esposte al campo e.m. che circonda il risuonatore.
    Abstract: Резюме Исследуются параметрьи сапфирового резонатора на частоте 50 ГГц. Измеряются тепловой козффиициент для резонансной частотьи ивеличина добротности в области температур от 20 до 850°C. Резонатор представляет конфичурацию с открьтой структурой без металлических частей. Резонатор позволяет работать при вьисоких температурах иего добротность зависит тольло от внутренних диэлек-трических потерь кристалла. Полученньие результатьи покзяивают, что сапфировый резонатор может работать при температурах вплоть до 850°C.
    Notes: Summary The resonant-frequency temperature coefficient andQ-value of a sapphire resonator at 50 GHz has been measured at temperatures ranging from 20 to 850°C. The resonator operates in an open-structure configuration, without any metal part. In this way it is possible to work at high temperatures, theQ-factor being affected only by the intrinsic dielectric losses of the crystal. The results indicate that the sapphire resonator is well suited for applications up to 850°C.
    Type of Medium: Electronic Resource
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