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  • Springer  (37)
  • American Institute of Physics  (6)
  • Nature Publishing Group  (4)
  • De Gruyter  (2)
  • AGU (American Geological Union)
  • 2005-2009  (15)
  • 1995-1999  (20)
  • 1990-1994  (14)
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Year
  • 1
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] The recycling of the amyloid precursor protein (APP) from the cell surface via the endocytic pathways plays a key role in the generation of amyloid β peptide (Aβ) in Alzheimer disease. We report here that inherited variants in the SORL1 neuronal sorting receptor are associated with ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 379 (1996), S. 311-319 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The structure of a heterotrimeric G protein reveals the mechanism of the nucleotide-dependent engagement of the α and βγ subunits that regulates their interaction with receptor and effector molecules. The interaction involves two distinct interfaces and dramatically alters the ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 379 (1996), S. 369-374 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Rod transducin, GtaJ?r is one of the best studied G proteins, coupling photoactivated rhodopsin to the visual signalling cascade. Here we report the crystal structure of the transducin /ty dimer, Gt)Sy, solved by multiwavelength anomalous diffraction (MAD) and refined at 2.1 A resolution ...
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Empirical economics 19 (1994), S. 185-200 
    ISSN: 1435-8921
    Keywords: C93 ; D1 ; D80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract The robust laboratory evidence of preference reversal rolottenies has been represented a a threat to the general validity of standard theories of decision-making under uncon ant i evidence is obtained from laboratory, that is, not real-world, lotteries with subjects vachavers sought to make decisions among such lotteries. Here, the prevalence of preference reveated is talix in a field experiment with used cars, that is, a case of real-world non-trivial non-lot ?????? payoff-uncertain-choice objects, and with subjects who registe daspotential????? No sign of preference reversal was observed.
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  • 5
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The π− p interactions with at least one charged secondary produced at polar angle ∼90° in c.m.s. and having the transverse momentum above 1 GeV/c were investigated. The data were obtained using streamer chamber magnetic spectrometer RISK at 38 GeV/c π beam from Serpukhov accelerator. The analyzis of associated production in reconstructed events suggests, that if the transverse momentum of a pair of oppositely charged secondaries compensates the trigger particlep ⊥ practically completely, this pair is the product of the ρ0 decay in marked fraction of such events. We observed a large spin-alignment for the ρ0-mesons selected as described above: the probability of zero spin projection onto the normal to the ρ0 production plane is equal to ρ 00 T =0.86±0.23. The enhancement of the number of events, in which the ρ0 picks up practically full momentum transfer carrying by the exchange, and also the enlarged tensor polarization for the ρ0-mesons in these events could be qualitatively explained as manifestation of direct ρ0-production via the QCD higher twist processes in the highp ⊥π− p collisions. At the same time, the observed effects are markedly larger than the values predicted with QCD model in which the higher twist corrections were included.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Letters in mathematical physics 38 (1996), S. 437-456 
    ISSN: 1573-0530
    Keywords: 81R50 ; Weak Hopf algebras ; multiplicative isometries ; amalgamated crossed products
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract By weakening the counit and antipode axioms of aC *-Hopf algebra and allowing for the coassociative coproduct to be nonunital, we obtain a quantum group, that we call aweak C *-Hopf algebra, which is sufficiently general to describe the symmetries of essentially arbitrary fusion rules. This amounts to generalizing the Baaj-Skandalis multiplicative unitaries to multipicative partial isometries. Every finite-dimensional weakC *-Hopf algebra has a dual which is again a weakC *-Hopf algebra. An explicit example is presented with Lee-Yang fusion rules. We briefly discuss applications to amalgamated crossed products, doubles, and quantum chains.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Policy sciences 32 (1999), S. 13-38 
    ISSN: 1573-0891
    Source: Springer Online Journal Archives 1860-2000
    Topics: Political Science , Economics
    Notes: Abstract As our understanding of human impacts on the environment has increased, it has become clear that we need to move toward a closed-loop industrial society in order to avoid undesirable health and ecosystem consequences. Achievement of this goal depends on radical technological innovation in both products and processes. This paper explores how to design public policy mechanisms to stimulate rather than impede pollution-preventing technological innovation. It begins with a discussion of the role of government in civilian technology development and diffusion. It then sets out six design criteria for policy to promote ‘green’ technology innovation. Based on this set of design criteria, the article assesses the potential and limitations of current U.S. policy approaches to stimulate technological innovation that moves us toward a minimal waste society. The main conclusions of this assessment are as follows. Over the past decade, the U.S. environmental policy system has experienced a variety of reforms and new initiatives, many aimed directly at promoting environmentally-friendly technological change. The strengths of these reforms are to increase the information that the private sector has about the magnitude and cost of their environmental impacts and to allow greater flexibility in the technologies that firms choose to meet environmental regulations and goals. Because of these reforms, firms are likely to undertake technological innovation for the environment in situations with clear short-term economic benefits, i.e. to capture the much heralded win-win potential of environmental regulation. However, these reforms have significant weaknesses as well. Unless policy provides stronger political or economic incentives and clearer signals about future environmental performance requirements, we are unlikely to be able to drive technological innovation in industries where the pay-off is more longterm or uncertain, and thus will make only limited progress toward the goal of a minimal waste society.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Foundations of physics 23 (1993), S. 751-767 
    ISSN: 1572-9516
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The physical motivations for the dynamical group are presented and it is shown how Barut's mathematical speculations were combined with the idea of an elementary length to provide group theoretical models of relativistic extended objects. Then the simplest nonrelativistic and relativistic models are described.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Foundations of physics 26 (1996), S. 719-786 
    ISSN: 1572-9516
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Foundations of physics 26 (1996), S. 823-846 
    ISSN: 1572-9516
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract To complete our ontological interpretation of quantum theory we have to conclude a treatment of quantum statistical mechanics. The basic concepts in the ontological approach are the particle and the wave function. The density matrix cannot play a fundamental role here. Therefore quantum statistical mechanics will require a further statistical distribution over wave functions in addition to the distribution of particles that have a specified wave function. Ultimately the wave function of the universe will he required, but we show that if the universe in not in thermodynamic equilibrium then it can he treated in terms of weakly interacting large scale constituents that are very nearly independent of each other. In this way we obtain the same results as those of the usual approach within the framework of the ontological interpretation.
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