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  • 1
    Electronic Resource
    Electronic Resource
    Low-Temperature Processing of Ferroelectric Layer-Structured Perovskite Thin Films by Using an Alkoxide Complex (1998)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 157-158 (May 1998), p. 189-198 
    Details
    ISSN: 1013-9826
    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/2011/0528/01/44/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.157-158.189.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Gain, absorption and saturation intensity measurements of an X-ray preionized, discharge pumped XeCl laser (1989)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 11 (1989), S. 1733-1749 
    Details
    ISSN: 0392-6737
    Keywords: Excimer lasers ; Ultraviolet spectra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto I coefficienti di guadagno a piccolo segnale e di assorbimento di un laser a eccimero XeCl, preionizzato a raggi X, sono stati misurati sia in funzione del tempo che della lunghezza d'onda. Inoltre sono stati ottenuti due valori per l'intensità di saturazione usando l'analisi di Rigrod sull'evoluzione dell'intensità fotonica all'interno della cavità e misure di guadagno in condizioni di saturazione.
    Abstract: Резюме Измеряются усиление малых сигналов и коэффициенты поглощения рентгеновского, предионизонного XeCl лазера с высокой однородностью. С высоким разрешением одновременно определяются временная эволюция и зависимость от длины волны. Получаются две различные оценки интенсивности насьшения, используя анализ внутриполостной интенсивности и измерения усиления.
    Notes: Summary The small signal gain and absorption coefficients of a high uniformity, X-ray preionized XeCl laser have been measured. Their time evolution and wavelength dependence have been simultaneously detected with high resolution. Two distinct estimates of the saturation intensity were obtained by means of a Rigrod-type analysis of the intracavity intensity and by using saturated gain measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02459118
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  • 3
    Electronic Resource
    Electronic Resource
    Some design limitations for large-aperture high-energy per pulse excimer lasers (1992)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 14 (1992), S. 495-507 
    Details
    ISSN: 0392-6737
    Keywords: Electrical phenomena in gases ; Other laser system operation parameters (e.g. efficiency, lifetime, reliability, performance) ; Excimer lasers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Some limitation problems for gas discharge excimer lasers, when scaled to a high pulsed energy output with high repetition rate are discussed. As an example, we present some experimental results obtained with an X-ray preionized (10×10×100) cm3 active volume, low-repetition-rate-operated gas discharge XeCl laser system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457039
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  • 4
    Electronic Resource
    Electronic Resource
    Inductance calculation of discharge chamber for transverse gas-flow laser system (1993)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 15 (1993), S. 1507-1519 
    Details
    ISSN: 0392-6737
    Keywords: Design of specific laser systems ; High-frequency discharges
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary An approximate method is described for the calculation of the inductance associated with the discharge chamber in a transverse gas-flow laser system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02451942
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  • 5
    Electronic Resource
    Electronic Resource
    Discharge medium uniformity influence on XeCl excimer laser beam quality (1992)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 14 (1992), S. 41-48 
    Details
    ISSN: 0392-6737
    Keywords: Wave fronts ; ray tracing ; and beam spread ; Electromagnetic wave propagation in plasma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Starting with the geometrical optics approximation, the influence of the discharge and of the gas flow nonuniformities on the excimer laser beam propagation quality is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02455343
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  • 6
    Electronic Resource
    Electronic Resource
    Study of self-preionized XeCl* electron-avalanched discharges (1991)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 13 (1991), S. 1387-1398 
    Details
    ISSN: 0392-6737
    Keywords: Excimer lasers ; Electrical phenomena in gases ; Electric discharges
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Some performances of an excimer discharge at the formative stage are calculated and compared to the experimental results obtained in a XeCl* laser device with a pin cathode without external preionization. We present a simplified discharge model for exploring the process of the preionization generated by the coronas in the cathode pin region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457127
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  • 7
    Electronic Resource
    Electronic Resource
    Use of Single Isomorphous Replacement Data of Proteins – Resolving the Phase Ambiguity and a New Procedure for Phase Extension (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 49-55 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A procedure combining direct methods and solvent flattening to break the phase ambiguity intrinsic to the single isomorphous replacement (SIR) technique has been tested with the experimental SIR data of the known protein RNase Sa at 2.5 Å resolution. The use of direct methods provided better initial phases for the solvent-flattening procedure, while the solvent-flattening procedure greatly improved direct-method phases leading to a traceable Fourier map. A small subset of known phases at low resolution makes direct phasing of SIR data much easier. Accordingly a method for extending low-resolution phases to high-resolution ones is proposed making use of additional SIR information. This reduces the problem of finding a value in the range of 0–2π for each unknown phase to that of just making a choice between two possible values. Tests with the known protein RNase Sa showed that the method is able to extend phases from a resolution of 6 to 2.5 Å leading to an easily traceable Fourier map. The solvent-flattening technique and the combination of which with direct methods were used for the phase extension. Either procedure yielded reasonably good results, but on the whole, the result from the combination of direct methods with solvent flattening is better. Results of the latter procedure were further compared with that from direct phasing of the 2.5 Å SIR data and with that from phase extension by solvent flattening without SIR information. An improvement gained by the use of SIR information is evident.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444996009365
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  • 8
    Electronic Resource
    Electronic Resource
    A new iterative procedure for combining direct methods with solvent flattening – dealing with the phase ambiguity in protein crystallography (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 792-794 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A new procedure for combining direct methods with the solvent-flattening technique is proposed for phasing single isomorphous replacement (SIR) or one-wavelength anomalous scattering (OAS) data of proteins. The new procedure differs from the previous one [Zheng, Zheng, Gu, Mo, Fan & Hao (1997). Acta Cryst. D53, 49–55] in that the direct method not only provides input phases to but also accepts feedback phases from solvent flattening, thus forming an iterative process for breaking the ambiguities and refining the values of phases. The new procedure was tested with the experimental SIR data of the known structure ribonuclease Sa. For the strongest 1000 of the total 7264 refelctions, the mean Fobs-weighted phase error is 7.5 and 9.4° lower than that of the previous procedure and that of solvent flattening alone, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S090744499700680X
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  • 9
    Electronic Resource
    Electronic Resource
    The program SAPI and its applications. III. Determination of structures having pseudo-translational symmetry (1990)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 99-103 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Optimization has been made of the program SAPI for automatic solution of structures having pseudo-translational symmetry. This includes: (1) floating default cutoff of E's; (2) automatic and user-adjustable balance between the number of systematically strong reflections and that of the systematically weak ones; (3) R factors for reflection subsets corresponding to the 'strong' group and the 'weak' groups. Examples on solving structures with pseudo-translational symmetry are discussed in detail. They include known as well as unknown structures and centrosymmetric as well as non-centrosymmetric structures, all of which can be solved starting from a default run of SAPI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767389010147
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  • 10
    Electronic Resource
    Electronic Resource
    Crystals of Ligand-Free Bovine Neurophysin II (1996)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 946-949 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A modified neurophysin, des 1-6 bovine neurophysin II, has been crystallized in the absence of bound hormone or hormone analogue. These crystals represent the first crystals of ligand-free neurophysin, and are essential for understanding neurophysin–hormone recognition as well as hormone-induced neurophysin dimerization. The crystals diffract to beyond 1.8 Å resolution, belong to space group P3121 (or P3221) with a = 48.86, c = 78.61 Å, and contain one molecule per asymmetric unit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444996005513
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