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  • 1
    Monograph available for loan
    Monograph available for loan
    Belmont : Wadsworth Publishing Company
    Call number: PIK N 070-92-0755
    Type of Medium: Monograph available for loan
    Pages: 470 pp.
    Edition: 4. Aufl.
    ISBN: 0534178081
    Branch Library: PIK Library
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  • 2
    ISSN: 0378-1119
    Keywords: Charon phage vector ; DNA:protein interactions ; Recombinant DNA ; viral DNA packaging
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Stable isotope measurements on molluses from raised marine deposits, and on foraminifera in a piston core, define a series of light isotope events. A major event is14C dated at ca. 10.3 ka and is correlated with a marked isotopic excursion in HU77-021-156. This event is followed by a dramatic rise in diatom and, slightly later, in benthic foraminiferal abundances. Molluses record another light event around 8 ka. Major fluctuations in both δ18O and δ13C around 10.3 ka suggests that the Hudson Strait ice stream may have responded to the Younger Dryas climatic oscillation.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Uteroglobin, a secretory protein of rabbit uterine epithelium, was localized by the direct immunoperoxidase method in control and hCG-induced pseudopregnant rabbits. In control rabbits, uteroglobin was confined to the apical cytoplasm of nearly all cells of the endometrial epithelium. The induction of pseudopregnancy resulted in a pronounced continuing increase, through 4 days post-hCG administration, in the absolute number of epithelial cells engaged in uteroglobin synthesis. Furthermore, the endoplasmic reticulum was more intensely stained for uteroglobin than in the epithelial cells of control rabbit endometrium. Thus, the increased production of uteroglobin, in response to hormonal stimulation, appears to be achieved both through an increase in the amount of uteroglobin synthesized by a given cell as well as by an increase in the number of cells involved in uteroglobin synthesis. Concurrent with the increase in the number of cells synthesizing uteroglobin, an increase in the number of unstained cells first appeared at the second day of pseudopregnancy, during the period of maximal epithelial proliferation. However, within those cells containing uteroglobin on the second day following injection with hCG, most staining was limited to the perinuclear membrane. At various times following hCG administration, a number of scattered cells, intensely stained for uteroglobin, were observed in the uterine epithelium. Based upon ultrastructural studies, failure to exclude trypan blue, and the presence of intra-mitochondrial uteroglobin, they were identified as cither dead or dying cells.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Recently there has been a surge of new interest in three-dimensional wake patterns. In the present work, we have devised a method to control the spanwise end conditions and wake patterns using “end suction”, which is both continuously-variable and admits transient control. Classical steady-state patterns, such as parallel or oblique shedding or the “chevron” patterns are simply induced. The wake, at a given Reynolds number, is receptive to a continuous range of oblique shedding angles (θ), rather than to discrete angles, and there is excellent agreement with the “cos θ” formula for oblique-shedding frequencies. We show that the laminar shedding regime exists up to Reynolds numbers (Re) of 205, and that the immense disparity among reported critical Re for wake transition (Re = 140–190) can be explained in terms of spanwise end contamination. Our transient experiments have resulted in the discovery of new phenomena such as “phase shocks” and “phase expansions”, which can be explained in terms of a simple model assuming constant normal wavelength of the wake pattern. Peter Monkewitz (Lausanne) also predicts such transient phenomena from a Guinzburg-Landau model for the wake.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Algorithmica 19 (1997), S. 369-389 
    ISSN: 1432-0541
    Keywords: Key words. Parallel tree contraction, Parallel algorithms, Algebraic computing, Code optimization, List ranking, Parallel prefix sum.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract. In this paper a systematic method for the design of efficient parallel algorithms for the dynamic evaluation of computation trees and/or expressions is presented. This method involves the use of uniform closure properties of certain classes of unary functions. Using this method, optimal parallel algorithms are given for many computation tree problems which are important in parallel algebraic and numerical computation, and parallel code generation on exclusive read and exclusive write parallel random access machines. Our algorithmic result is complemented by a P-complete tree problem.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-0541
    Keywords: Key words. Delaunay triangulation, Parallel algorithms, Algorithm experimentation, Parallel implementation.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract. This paper describes the design and implementation of a practical parallel algorithm for Delaunay triangulation that works well on general distributions. Although there have been many theoretical parallel algorithms for the problem, and some implementations based on bucketing that work well for uniform distributions, there has been little work on implementations for general distributions. We use the well known reduction of 2D Delaunay triangulation to find the 3D convex hull of points on a paraboloid. Based on this reduction we developed a variant of the Edelsbrunner and Shi 3D convex hull algorithm, specialized for the case when the point set lies on a paraboloid. This simplification reduces the work required by the algorithm (number of operations) from O(n log 2 n) to O(n log n) . The depth (parallel time) is O( log 3 n) on a CREW PRAM. The algorithm is simpler than previous O(n log n) work parallel algorithms leading to smaller constants. Initial experiments using a variety of distributions showed that our parallel algorithm was within a factor of 2 in work from the best sequential algorithm. Based on these promising results, the algorithm was implemented using C and an MPI-based toolkit. Compared with previous work, the resulting implementation achieves significantly better speedups over good sequential code, does not assume a uniform distribution of points, and is widely portable due to its use of MPI as a communication mechanism. Results are presented for the IBM SP2, Cray T3D, SGI Power Challenge, and DEC AlphaCluster.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In laboratory tests, eggs and young larvae of Spodoptera littoralis were exposed to cold treatments of varying temperature and duration in an attempt to find an alternative to the current quarantine treatment of 10 days’ storage at 1–2°C, which damages some imported chrysanthemum cuttings. The alternative cold regimes tested, i.e., 1°C for four to eight days, is for seven days, 4°C for four to six, eight and ten days, and 7°C for seven days, did not eradicate S. littoralis. Differences in response to cold were observed both between strains and within developmental stages of S. littoralis.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Computational Physics 79 (1988), S. 417-435 
    ISSN: 0021-9991
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Computer Science , Physics
    Type of Medium: Electronic Resource
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