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  • 1
    Digitale Medien
    Digitale Medien
    Solid coordination compounds of alkali metal salts with a neutral aromatic amine. I. Molecular structure and bonding (1974)
    s.l. : American Chemical Society
    Inorganic chemistry 13 (1974), S. 115-120 
    Details
    ISSN: 1520-510X
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ic50131a022
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  • 2
    Digitale Medien
    Digitale Medien
    Low-Temperature Physics in North America (1947)
    [s.l.] : Nature Publishing Group
    Nature 160 (1947), S. 736-737 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] DURING the past summer, an opportunity was taken to visit the principal laboratories in the United States and Canada which are engaged in low-temperature research, with the exception of the Naval Research Laboratory in Washington, the laboratory directed by Giauque at Berkeley and that planned by ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/160736a0
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  • 3
    Digitale Medien
    Digitale Medien
    Oxygen reduction and optimum production of ATP in photosynthesis (1975)
    [s.l.] : Nature Publishing Group
    Nature 256 (1975), S. 599-600 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Fig. 1 The combined reduction of oxygen and of NADP by non-cyclic electron transport. The reaction of ferredoxin with oxygen makes possible the synthesis of ATP without the production of NADPH. Stoichiometries are discussed in the text and are not implied in the diagram. Figure 1 outlines a ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/256599a0
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  • 4
    Digitale Medien
    Digitale Medien
    Film Transfer in He II (1960)
    [s.l.] : Nature Publishing Group
    Nature 185 (1960), S. 831-832 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] It has been found, especially at temperatures in the neighbourhood of 1-3 K. where most of the measurements have been made, that the rate of transfer out of a narrow cylindrical beaker of, say, 1 -5 mm. diameter is dependent on the history and condition of the liquid in the beaker and is no longer ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/185831a0
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  • 5
    Digitale Medien
    Digitale Medien
    Forces Associated with Heat Flow in Helium II (1939)
    [s.l.] : Nature Publishing Group
    Nature 144 (1939), S. 475-476 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] It was discovered some time ago1 that when heat flowed in helium II down a narrow capillary or through a tube filled with powder, liquid was forced up the tube in the oppo­site direction. It was con­sidered at the time that the phenomenon, which has been called the ‘fountain ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/144475a0
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  • 6
    Digitale Medien
    Digitale Medien
    Liquid Helium (1939)
    [s.l.] : Nature Publishing Group
    Nature 143 (1939), S. 227-230 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE properties of liquid helium can best be considered under two headings: (a) properties in thermal equilibrium, (b) transport effects. The equilibrium properties, which have been the subject of many careful investigations in Leyden and elsewhere, may be regarded as fairly well established. These ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/143227a0
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  • 7
    Digitale Medien
    Digitale Medien
    Redox signalling and the structural basis of regulation of photosynthesis by protein phosphorylation (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 100 (1997), S. 0 
    Details
    ISSN: 1399-3054
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: In photosynthesis in chloroplasts and cyanobacteria, redox control of thylakoid protein phosphorylation regulates distribution of absorbed excitation energy between the two photosystems. When electron transfer through chloroplast photosystem II (PSII) proceeds at a rate higher than that through photosystem I (PSI), chemical reduction of a redox sensor activates a thylakoid protein kinase that catalyses phosphorylation of light-harvesting complex II (LHCII). Phosphorylation of LHCII increases its affinity for PSI and thus redistributes light-harvesting chlorophyll to PSI at the expense of PSII. This short-term redox signalling pathway acts by means of reversible, post-translational modification of pre-existing proteins. A long-term equalisation of the rates of light utilisation by PSI and PSII also occurs: by means of adjustment of the stoichiometry of PSI and PSII. It is likely that the same redox sensor controls both state transitions and photosystem stoichiometry. A specific mechanism for integration of these short- and long-term adaptations is proposed. Recent evidence shows that phosphorylation of LHCII causes a change in its 3-D structure, which implies that the mechanism of state transitions in chloroplasts involves control of recognition of PSI and PSII by LHCII. The distribution of LHCII between PSII and PSI is therefore determined by the higher relative affinity of phospho-LHCII for PSI, with lateral movement of the two forms of the LHCII being simply a result of their diffusion within the membrane plane. Phosphorylation-induced dissociation of LHCII trimers may induce lateral movement of monomeric phospho-LHCII, which binds preferentially to PSI. After dephosphorylation, monomeric, unphosphorylated LHCII may trimerize at the periphery of PSII.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1399-3054.1997.tb00012.x
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  • 8
    facet.materialart.
    Unbekannt
    AFRICAN ARMY, An (1918)
    London : Periodicals Archive Online (PAO)
    The RUSI journal. 63 (1918:Feb./Nov.) 657 
    Details
    ISSN: 0307-1847
    Thema: Politikwissenschaft
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:p225-1918-063-00-000001
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  • 9
    Digitale Medien
    Digitale Medien
    Flow Phenomena in Liquid Helium II (1938)
    [s.l.] : Nature Publishing Group
    Nature 142 (1938), S. 643-644 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] RECENT measurements on the flow of liquid helium II through capillaries have yielded very varied results. We reported earlier1 that the flow through long capillaries bore no relation to a normal laminar or turbulent condition of the liquid, and that the velocity depended only ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/142643a0
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  • 10
    Digitale Medien
    Digitale Medien
    Flow of Liquid Helium II (1938)
    [s.l.] : Nature Publishing Group
    Nature 141 (1938), S. 75-75 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A SURVEY of the various properties of liquid helium II has prompted us to investigate its viscosity more carefully. One of us1 had previously deduced an upper limit of 10−5 C.G.S. units for the viscosity of helium II by measuring the damping of an ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/141075a0
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