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  1. No Access

    Article

    Gross Nitrogen Dynamics in the Mycorrhizosphere of an Organic Forest Soil

    The rhizosphere is a hot-spot for biogeochemical cycles, including production of greenhouse gases, as microbial activity is stimulated by rhizodeposits released by roots and mycorrhizae. The biogeochemical cyc...

    M. Holz, M. Aurangojeb, Å. Kasimir, P. Boeckx, Y. Kuzyakov, L. Klemedtsson in Ecosystems (2016)

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    Article

    Laboratory confirmation of C60+ as the carrier of two diffuse interstellar bands

    Laboratory measurements of the gas-phase spectrum of C60+ confirm that the diffuse interstellar bands observed at 9,632 ångströms and 9,577 ångströms arise as a result of C60+ in the interstellar medium.

    E. K. Campbell, M. Holz, D. Gerlich, J. P. Maier in Nature (2015)

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    Article

    Insektengiftallergie — Anti-IgE-Therapie

    W. Sieber, W. Pfützner, H. Löffler, M. Hertl, A. Moeser, M. Henzgen in Allergo Journal (2007)

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    Article

    Analyzing the Processes of Excitation and Decay of Plasma Turbulence near the Fifth Electron Gyroharmonic using Stimulated Electromagnetic Emission of the Ionosphere

    We present the results concerning the dynamics of stimulated electromagnetic emission (SEE) in the vicinity of the 5th electron gyroharmonic in the ionospheric-modification experiment. Measurements of the dyna...

    E. N. Sergeev, S. M. Grach, G. P. Komrakov in Radiophysics and Quantum Electronics (2002)

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    Book

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    Chapter

    The Supremum of pcf μ (a)

    In this chapter we introduce first the essential notion of a control function. Its importance will come out when, in Chapter 8, we determine the cofinalities of partial orderings of the form ([λ]k

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    Applications of pcf-Theory

    As a first application of pcf-theory, we will prove in this section two estimates for cardinal numbers. Initially, if δ is a limit ordinal and μ is a cardinal with μ < ℵ δ then ...

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    Generators of T +(a)

    In this chapter, a denotes an infinite set of regular cardinals. We will prove the following assertion, due to S. Shelah: If |a|+ < min(a) and λ ∈ pcf(a), then there is a set bλ ∈ T+(a) which generates the idea...

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    Local Properties

    In his book [Sh5], Shelah introduces the operator pcf* which satisfies pcf*(pcf*(a)) = pcf*(a). If b is a set of regular cardinals, which is not necessarily progressive, and if every limit point of b is a singula...

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    The Cardinal Function pp(λ)

    In this chapter, we introduce Shelah’s cardinal function pp k (λ) whose properties we now summarize. If λ is a singular cardinal, then the definition of pp k ...

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    Introduction

    If M and N are setsl and if there exists a bijection2 from M onto N, then we say that M and N are equinumerous, and write M ≈ N. To measure the number of members of a set, we will introduce sets of comparison. Wi...

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    Approximation Sequences

    The methods applied in the previous chapters are classical and, in a certain sense, elementary. In this chapter, we will introduce modern model theoretic methods. Notions such as “model of ZFC” and “absolutene...

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    Foundations

    The year of birth of set theory can be regarded as 1872. In this year, Georg Cantor introduced the notion of a transfinite (infinite) ordinal number His investigations, which soon made set theory an independen...

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    Ordinal Functions

    In the Galvin-Hajnal theorem, the question of whether it holds for singular cardinals with countable cofinality was left open. Let ℵδ be singular and v be a cardinal. If δ = ℵδ, then

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    The Galvin-Hajnal Theorem

    The so-called singular cardinal problem consists of the description of the possible size of the cardinal, % MathType!MTEF!2!1!+- % feaagCart1e...

    M. Holz, K. Steffens, E. Weitz in Introduction to Cardinal Arithmetic (1999)

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    Chapter

    High Temperature 93Nb NMR Study of Liquid NbCl5 and its Mixtures with Various Alkali Chlorides

    Liquid NbCl5 and its mixtures with different alkali halides have been investigated for the first time by 93Nb NMR at temperatures up to 900K. In liquid NbCl5 quadrupolar relaxation dominates. Both the chemical sh...

    E. Schellkes, M. Holz, W. Freyland in Refractory Metals in Molten Salts (1998)

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    Article

    Liposomal Formulations of Cyclosporin A: Influence of Lipid Type and Dose on Pharmacokinetics

    Purpose. Liposomal formulations of Cyclosporin A (CyA)3 have been described in more than 30 publications to substitute Cremophor EL (CrEL), a triricinoleate ester of ethoxylated glycerol, as drug carrier. Howeve...

    A. Fahr, M. Holz, G. Fricker in Pharmaceutical Research (1995)

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    Article

    Temperature dependence of21Ne,83Kr, and131Xe quadrupole relaxation and of xenon diffusion in polyatomic solvents

    The main aim of the present work is to contribute, by an extension of the experimental data base, to the understanding of quadrupole relaxation of nuclei of noble gases dissolved in molecular liquids. We have ...

    M. Holz, R. Haselmeier, A. Klein, R. K. Mazitov in Applied Magnetic Resonance (1995)

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    Article

    Multinuclear study of RF losses in NaCl/D2O solutions

    The RF losses in NMR experiments on ionic solutions have been investigated by multi-NMR. The change of π/2 pulse length (PW)90 for23Na,35Cl,2D,17O and1H nuclei in NaCl/D2O solutions has been systematically studie...

    X. -A. Mao, M. Holz in Applied Magnetic Resonance (1994)

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    Article

    Binary Optics Microlens Arrays in CdTe.

    Arrays of miniature focusing optics located at the focal plane can improve the performance of focal plane systems. By more completely collecting the light at the focal plane and concentrating it into a smaller...

    M. B. Stern, W. F. Delaney, M. Holz, K. P. Kunz in MRS Online Proceedings Library (1990)

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