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  • 1
    Electronic Resource
    Electronic Resource
    Ion Channels in the Chloroplast Envelope Membrane (1995)
    s.l. : American Chemical Society
    Biochemistry 34 (1995), S. 15906-15917 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00049a005
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  • 2
    Electronic Resource
    Electronic Resource
    The 2-oxoglutarate/malate translocator of chloroplast envelope membranes: molecular cloning of a transporter containing a 12-helix motif and expression of the functional protein in yeast cells (1995)
    s.l. : American Chemical Society
    Biochemistry 34 (1995), S. 2621-2627 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00008a028
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  • 3
    Electronic Resource
    Electronic Resource
    Robust target functions in electromagnetic design (2003)
    Bradford : Emerald
    Compel 22 (2003), S. 549-560 
    Details
    ISSN: 0332-1649
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: Uncertainties in the design variables of non-linear engineering optimization problems are often neglected. That could result in considerable deterioration of the target function value of an implemented design compared with the computed optimal solution. This effect can be reduced with robust optimization, where it is tried to achieve robust designs by actively embedding the uncertainties and robustness measures in the optimization process. A methodology for robust optimization of non-linear problems is presented, including practical methods for the solution of such programs. The benefits of the approach are discussed in a numerical field calculation example.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03321640310475029
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  • 4
    Electronic Resource
    Electronic Resource
    Approximal plaque and gingival sulcus bleeding in routine dental care patients: relations to life stress, somatization and depression (2005)
    Oxford, UK : Munksgaard International Publishers
    Journal of clinical periodontology 32 (2005), S. 0 
    Details
    ISSN: 1600-051X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objectives: Previous research on relations between life stress and periodontal conditions was often based on indicators of periodontal destruction history and stimulus-specific measures of life stress. The present study was undertaken to compare patients showing different degrees of gingival sulcus bleeding with patients without signs of bleeding, using an instrument measuring cognitive impacts of events and assessing reported symptoms of depression and somatization. Additionally the patient groups were compared with regard to dental status and dental visiting behaviour. Analog comparisons were conducted in patients with different degrees of approximal plaque.Materials and Methods: 140 routine dental care patients attending a private dental practice were examined. Measurement devices were the sulcus bleeding index (SBI), the approximal plaque index (API), the Dental Avoidance Scale, the Life Experience Survey (LES), the Impact of Event Scale with the subtests cognitive intrusion and cognitive avoidance, and the SCL-90-R subscales somatization and depression.Results: Patients with high API scores differed from their zero-score counterparts in dental avoidance and time since last visit only. By contrast, subjects scoring high in the SBI not only had more missing teeth and reported more dental avoidance than their zero-score counterparts but also had elevated scores in intrusive and avoidant thoughts related to a stressful event as well as in symptoms of somatization and depression. No difference was found for the measure of stimulus specific recent life events (LES).Conclusions: The results suggest that cognitive preoccupation with adverse events and the presence of somatization and depression symptoms might play a role in gingival inflammation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-051X.2005.00716.x
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  • 5
    Electronic Resource
    Electronic Resource
    The major chloroplast envelope polypeptide is the phosphate translocator and not the protein import receptor (1991)
    [s.l.] : Nature Publishing Group
    Nature 353 (1991), S. 364-367 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Polypeptide profiles of envelope membranes from spinach and pea chloroplasts are shown in Fig. la. The main poly-peptides of these membranes have different apparent relative molecular masses (Mr) of 29,000 (29 K; E29 (spinach); lane 1), and 30K (E30 (pea); lane 2). When the precursor proteins are ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/353364a0
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  • 6
    Electronic Resource
    Electronic Resource
    Erratum (1989)
    Springer
    Pflügers Archiv 415 (1989), S. 253-253 
    Details
    ISSN: 1432-2013
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00370603
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  • 7
    Electronic Resource
    Electronic Resource
    Permeability of the non-selective channel in brown adipocytes to small cations (1989)
    Springer
    Pflügers Archiv 414 (1989), S. 564-570 
    Details
    ISSN: 1432-2013
    Keywords: Non-selective channel ; Patch clamp ; Brown adipose tissue ; Cation permeability ; Single channel current ; Selectivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The non-selective channel for monovalent cations of cultured brown adipocytes was studied concerning its permeability to alkali metal ions, NH 4 + , Tris+, Ca2+, and Ba2+. Experiments were done by means of the patch clamp technique using inside-out patches. With symmetrically increasing sodium concentrations the ion fluxes saturated. They are described by a dissociation constant (K Na) of 155 mmol/l and a maximum single channel conductance of 50 pS. Permeabilities were determined in relation to those for sodium yielding values of 0.80 for potassium and 1.55 for ammonium. The complete permeability sequence for ammonium and the alkali metals is: NH 4 + 〉Na+〉Li+ 〉K+≥Rb+≃Cs+·Ca2+ and Ba2+ as well as the buffer ion Tris+ are not able to pass the channel measurably. It is shown that the conductance behaviour of the non-selective channel is not sufficiently described by the Goldman-Hodgkin-Katz theory. Deviations from independence are saturation with increased activity of the permeant ion and non-linear current voltage relations in symmetrical solutions. A simple two barrier model with one binding site in the center of the electric field is shown to be more appropriate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00580992
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  • 8
    Electronic Resource
    Electronic Resource
    A rapid method for measuring organelle-specific substrate transport in homogenates from plant tissues (1994)
    Springer
    Planta 194 (1994), S. 181-185 
    Details
    ISSN: 1432-2048
    Keywords: Metabolite transport ; Plant cell membranes ; Reconstitution (membranes)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A rapid method is described for measuring organelle-specific metabolite transport systems in crude homogenates from plants. The tissues were homogenized in liquid nitrogen, extracted with buffer and reconstituted into artificial membranes. The method allowed demonstration of the known different substrate specificities of chloroplast triose phosphate/phosphate translocators from C3- and C4-plants, of the triose phosphate/phosphate translocator from non-green tissue, and of the dicarboxylate translocator. It thus by-passes the necessity to isolate intact plant organelles and, in addition, only a low amount of tissue material is required for transport measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01101676
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  • 9
    Electronic Resource
    Electronic Resource
    Distance automata having large finite distance or finite ambiguity (1993)
    Springer
    Theory of computing systems 26 (1993), S. 169-185 
    Details
    ISSN: 1433-0490
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract A distance automaton is a (nondeterministic finite) automaton which is equipped with a nonnegative cost function on its transitions. The distance of a word recognized by such a machine quantifies the expenses associated with the recognition of this word. The distance of a distance automaton is the maximal distance of a word recognized by this machine or is infinite, depending on whether or not a maximum exists. We present distance automata havingn states and distance 2 n − 2. As a by-product we obtain regular languages having exponential finite order. Given a finitely ambiguous distance automaton withn states, we show that either its distance is at most 3 n − 1, or the growth of the distance in this machine is linear in the input length. The infinite distance problem for these distance automata is NP-hard and solvable in polynomial space. The infinite-order problem for regular languages is PSPACE-complete.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01202281
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  • 10
    Electronic Resource
    Electronic Resource
    A rapid method for measuring organelle-specific substrate transport in homogenates from plant tissues (1994)
    Springer
    Planta 194 (1994), S. 181-185 
    Details
    ISSN: 1432-2048
    Keywords: Metabolite transport ; Plant cell membranes ; Reconstitution (membranes)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A rapid method is described for measuring organelle-specific metabolite transport systems in crude homogenates from plants. The tissues were homogenized in liquid nitrogen, extracted with buffer and reconstituted into artificial membranes. The method allowed demonstration of the known different substrate specificities of chloroplast triose phosphate/phosphate translocators from C3- and C4-plants, of the triose phosphate/phosphate translocator from non-green tissue, and of the dicarboxylate translocator. It thus by-passes the necessity to isolate intact plant organelles and, in addition, only a low amount of tissue material is required for transport measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00196386
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    Paper (German National Licenses)
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