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  • 1990-1994  (9)
  • 1980-1984  (5)
  • 1970-1974  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Lattices and θ-function identities. II: Theta series (1992)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 33 (1992), S. 871-887 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The gluing construction of lattices is used to generate and study a number of theta function densities. It is shown, for example, that Riemann's formula, a fundamental degree 4 identity, can be derived from a degree 2 identity. It is proved that all in a large class of identities can be derived from these lattice techniques. A list of 24 independent quadratic identities in the Jacobi functions cursive-theta1 and cursive-theta3, conjectured to be complete, with all but two of them seeming to be new, is given. The theta series of glue classes is also investigated, and it is shown that all of them, as well as the functions cursive-thetaa,b, satisfy polynomials whose coefficients are linear combinations of theta series of lattices; these polynomials have some interesting properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.529738
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  • 2
    Electronic Resource
    Electronic Resource
    Lattices and aitch-theta-function identities. I: Theta constants (1992)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 33 (1992), S. 854-870 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The gluing construction of lattices is used to generate and study a number of theta constant identities. It is shown, for example, that the Jacobi identity, a well-known degree 4 identity, can be derived from a degree 2 identity. A list of all quadratic identities in θ3 derivable from this lattice method, containing over 30 algebraically independent identities, and conjectured to yield all quadratic identities in θ3 derivable by any means, is included. In contrast, only two independent quadratic identities in θ3 have been found elsewhere in the mathematical literature. The theta constants of lattices and their glue classes are investigated, and the fact that the theta constant of each glue class is a root of a polynomial whose coefficients are linear combinations of theta constants of lattices is shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.529737
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  • 3
    Electronic Resource
    Electronic Resource
    Recombinant Human Interleukin-8 Restores Function in Neutrophils from Patients with Myelodysplastic Syndromes Without Stimulating Myeloid Progenitor Cells (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 37 (1993), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Prognosis in myelodysplastic syndrome (MDS) is not only correlated closely with blast cell count in bone marrow and chromosomal abnormalities but also correlated with decreased leucocyte count and function leading to acquisition of lethal infections. Recently, clinical trials in MDS have focused on the application of haemopoietic growth factors such as G-CSF or GM-CSF, which have proven to increase neutrophil count and function. However, these cytokines carry the risk of stimulating the malignant clone, particularly in patients with increased blast cell count. Therefore, investigation of cytokines which are able to stimulate neutrophil function without the potential risk of stimulating haemopoietic progenitor cells may be relevant for MDS.As the stimulatory effect of interleukin-8 on neutrophil function is well known, we investigated whether recombinant human IL-8 is also able to improve the function of neutrophils gained from patients with MDS. Using three different techniques—the E. coli killing assay (8 patients), the production of reactive oxygen as determined by cytochrome c reduction (7 patients) and chemiluminescence (8 patients)—a significant stimulation of neutrophil function at a concentration of 10 nM IL-8 was found in all test systems. No correlation with FAB classification was evident. On the other hand, IL-8 only mildly stimulated growth of myeloid progenitor cells in bone marrow culture of healthy individuals and MDS patients. This minimal stimulation was blocked by a neutralizing antibody directed against GM-CSF, suggesting an indirect effect of IL-8 via secondary GM-CSF release.Thus, IL-8 is able in vitro to repair the functional abnormalities of neutrophils from patients with MDS but has only a marginal influence on myeloid progenitor cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3083.1993.tb02560.x
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  • 4
    Electronic Resource
    Electronic Resource
    CALCULATION OF CUMULATIVE PERCENTAGE AT SELECTED PARTICLE SIZES FROM BOTTOM WITHDRAWAL TUBE ANALYSIS (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 18 (1982), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : A new computation method is developed for the bottom withdrawal tube particle size analysis. A transformation on time scale is introduced so that the cumulative percentage of a selected particle size can be determined from a single continuous Oden cum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1982.tb00022.x
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  • 5
    Electronic Resource
    Electronic Resource
    Bacteria recovered without subculture from infected human urines expressed iron-regulated outer membrane proteins (1984)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 24 (1984), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Twelve enteric bacterial strains were recovered by differential centrifugation of urines which were collected from clinically diagnosed and microbiologically confirmed cases of urinary tract infection. The outer membrane protein (OMP) profiles of the clinical isolates were then analysed by sodiumdodecylsulphate-polyacrylamide gel electrophoresis (SDS-PAGE). It was found that 5 of the 12 isolates (3 Escherichia coli strains, 1 Klebsiella pneumoniae and 1 Proteus mirabilis strain) expressed 2 or more high Mr proteins in the range of 66000 to 85000. These high Mr proteins were expressed by the same organisms during growth in vitro in iron-restricted conditions but not in iron-sufficient media.In addition, it was found that the major outer membrane proteins expressed by the clinical isolates varied considerably and that, in many cases, fresh isolates expressed fewer porin proteins than the same bacterial strains after growth in vitro in trypticase soy broth. This is thus the first evidence the E. coli, K. pneumoniae and P. mirabilis grow under iron-restricted conditions in the urinary tract of humans and that the outer membrane protein profile of clinical isolates differ from in vitro grown bacteria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1984.tb01315.x
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  • 6
    Electronic Resource
    Electronic Resource
    A quadratic programming model for optimal data distribution (1981)
    Springer
    BIT 21 (1981), S. 294-304 
    Details
    ISSN: 1572-9125
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, a quadratic programming model is developed to take into consideration a number of factors that can influence the process of optimal allocation of data among the nodes in a distributed database. The factors include communication costs, translation costs, congestion costs and storage costs. Beale's method is used to solve the resulting quadratic program. Some numerical examples are presented and the potentials of such an approach in the design and analysis of distributed databases are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01941464
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Electronic Density of States for Penrose Tilings and Vicsek Fractal (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 150-151 (Jan. 1994), p. 435-444 
    Details
    ISSN: 1662-9752
    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/2011/0528/02/00/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.150-151.435.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Detection in Normal Plasma of Immunoglobulin resembling the Protein of γ-Chain Disease (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 419-421 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 a, The structure found for homogeneous yCD proteins; b, that of human IgG. IgG consists of two y chains and two light chains, joined by interchain bonds . .. ., and cleaved by papain into one Fey and two Faby fragments as depicted. The heavy lines show the sequences represented in yCD ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/246419a0
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  • 9
    Electronic Resource
    Electronic Resource
    Effects of annealing on magnetic properties of Fe78B13Si9 (1990)
    Springer
    Journal of materials science 25 (1990), S. 3159-3161 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract We have annealed amorphous Fe78B13Si9 samples at temperaturesT a = 355 to 460 ° C for timet a = 10 to 60 min, in an atmosphere with purging of nitrogen gas. After thermal treatment, we examined the hysteresis loop, DSC curve, and the X-ray diffractogram of each sample. The coercivityH c, the peak inductionB max, and the lossW h were analysed to study the affects of annealing. Stress-relief and partial crystallization are two important parameters in determining optimal annealing conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587667
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  • 10
    Electronic Resource
    Electronic Resource
    Observation of oxygen impurities in single-crystal silicon by means of internal friction (1981)
    Springer
    Journal of low temperature physics 44 (1981), S. 259-264 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Two new internal friction peaks have been observed in single-crystal silicon in the temperature range from 100 to 270 K of the Arrhenius-type relaxation at kilohertz frequencies. The activation energies of the two peaks are 0.14 and 0.20 eV. We attribute them to vibration of trapped interstital oxygen and the oxygen-vacancy complex, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00120776
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