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  • 1
    Electronic Resource
    Electronic Resource
    The gene for ribosomal protein S10 is present in mitochondria of pea and potato but absent from those of Arabidopsis and Oenothera (1995)
    Springer
    Current genetics 27 (1995), S. 559-564 
    Details
    ISSN: 1432-0983
    Keywords: RNA editing ; Group-II intron ; Gene transfer ; Evolution ; tRNA genes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A novel group II intron has been identified in the pea (Pisum sativum) mitochondrial genome. The gene harbouring this intron is identified as rps10 (encoding protein S10 of the small ribosomal subunit) by similarity to its known homologues in bacteria and in the mitochondrion of the liverwort Marchantia polymorpha. The rps10 gene is transcribed in pea, the intron is removed, and RNA editing in the rps10 reading frame increases similarity to its homologue in the M. polymorpha mitochondrion. Contrary to the situation in bacteria and Marchantia, rps10 is not part of a ribosomal-protein gene cluster in pea. It is flanked upstream by the genes trnF and trnP, encoding phenylalanine-and proline-accepting tRNAs, and downstream by cox1, encoding subunit 1 of the cytochrome-c-oxidase. Southern hybridization shows that sequences homologous to rps10 exist in potato mitochondria but not in mitochondria of Oenothera berteriana and Arabidopsis thaliana. The pea rps10 intron is homologous to introns in rrn26 and cox3 in the Marchantia mitochondrial genome, while the Marchantia rps10 gene lacks an intron.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314448
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  • 2
    Electronic Resource
    Electronic Resource
    Trennung und bestimmung der einzelnen eisenspezies in wassriger losung mit hilfe der Elektrophorese unter Schutzgasatmosphare
    Amsterdam : Elsevier
    Talanta 26 (1979), S. 713-717 
    Details
    ISSN: 0039-9140
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0039-9140(79)80176-9
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  • 3
    Electronic Resource
    Electronic Resource
    Das Verhaltenstherapeutische Kompetenztraining VKT – Eine spezifische Intervention für Patienten mit einer beginnenden Alzheimer-Demenz (1998)
    Springer
    Zeitschrift für Gerontologie + Geriatrie 31 (1998), S. 112-119 
    Details
    ISSN: 0044-281X
    Keywords: Schlüsselwörter Verhaltenstherapeutisches Kompetenztraining VKT – Psychotherapie – Alzheimer-Demenz ; Key words Behavioral competency training – Verhaltenstherapeutisches Kompetenztraining VKT – psychotherapy – Alzheimer disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary At the Psychiatric Department, Ludwig-Maximilians-Universität, Munich, a behavioral competency training (Verhaltenstherapeutisches Kompetenztraining) VKT is offered to patients with early stages of Alzheimer's disease (AD). The primary objects of VKT are, (a) patient support in coping with the diagnosis of AD, (b) mobilization of the present personal activity ressources, and (c) minimization of depressive symptoms. The VKT consits of six therapymodules: 1. behavior analysis, 2. psychoeducation, 3. stressmanagement, 4. increase of pleasant activities, 5. enhancement of social competency, and 6. modification of depressive cognitive patterns. The VKT is derived from scientific findings that show the involvement of psycho-social factors in the genesis of AD. Inadequate coping-behavior, unescapable stress and resulting neurodegenerative effects, a low premorbid niveau of activity and the presence of premorbid depressive symptoms outline the necessity of psychotherapeutic treatment in AD patients.
    Notes: Zusammenfassung An der Psychiatrischen Klinik und Poliklinik der Ludwig-Maximilians-Universität München bieten wir unseren Patienten mit einer beginnenden Alzheimer-Demenz (AD) ein Verhaltenstherapeutisches Kompetenztraining (VKT) an. Das VKT hat zum Ziel, (a) den Patienten bei der Bewältigung der Belastungen zu unterstützen, die sich aus der Erkrankung selbst sowie aus der Stellung der Diagnose ergeben; (b) durch die Mobilisierung vorhandener persönlicher Ressourcen zu vermeiden, daß der Patient im Frühstadium der Erkrankung in einem stärkeren Maße deaktiviert wird, als dies aufgrund seiner tatsächlichen neuropsychologischen Defizite gerechtfertigt ist; und (c) depressiven Symptomen entgegenzuwirken. Das VKT ist für ein Einzel- oder Kleingruppensetting konzipiert und setzt sich aus sechs Therapiemodulen zusammen: 1. Therapieplanung und Verhaltensanalyse, 2. Psychoedukation, 3. Streßmanagement, 4. Aktivitätenaufbau, 5. Förderung sozialer Kompetenz und 6. Modifikation depressiogener Kognitionen. Die Festlegung der Übungsinhalte des VKT begründet sich auf Forschungsergebnissen, die zeigen, daß an der Entwicklung einer AD psychosoziale Faktoren beteiligt sind. Mangelndes Coping-Verhalten bei unkontrollierbarem Streß und resultierende neurodegenerative Effekte, ein geringes prämorbides Aktivitätsniveau sowie das Auftreten prämorbider depressiver Symptome unterstreichen die Notwendigkeit einer psychotherapeutischen Behandlung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003910050026
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  • 4
    Electronic Resource
    Electronic Resource
    Zero sums of idempotents in Banach algebras (1994)
    Springer
    Integral equations and operator theory 19 (1994), S. 125-134 
    Details
    ISSN: 1420-8989
    Keywords: Primary 16A32 ; 16A38 ; 46H99 ; Secondary 45E05
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The problem treated in this paper is the following.Let p 1,...,p k be idempotents in a Banach algebra B, and assume p 1+...+p k =0.Does it follow that p j =0,j=1,..., k? For important classes of Banach algebras the answer turns out to be positive; in general, however, it is negative. A counterexample is given involving five nonzero bounded projections on infinite-dimensional separable Hilbert space. The number five is critical here: in Banach algebras nontrivial zero sums of four idempotents are impossible. In a purely algebraic context (no norm), the situation is different. There the critical number is four.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01206409
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  • 5
    Electronic Resource
    Electronic Resource
    Logarithmic residues, generalized idempotents, and sums of idempotents in Banach algebras (1997)
    Springer
    Integral equations and operator theory 29 (1997), S. 155-186 
    Details
    ISSN: 1420-8989
    Keywords: Primary: 46J05,30G30,16A32 ; Secondary: 46H95
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In a commutative Banach algebraB the set of logarithmic residues (i.e., the elements that can be written as a contour integral of the logarithmic derivative of an analyticB-valued function), the set of generalized idempotents (i.e., the elements that are annihilated by a polynomial with non-negative integer simple zeros), and the set of sums of idempotents are all the same. Also, these (coinciding) sets consist of isolated points only and are closed under the operations of addition and multiplication. Counterexamples show that the commutativity condition onB is essential. The results extend to logarithmic residues of meromorphicB-valued functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01191427
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  • 6
    Electronic Resource
    Electronic Resource
    Logarithmic residues in Banach algebras (1994)
    Springer
    Integral equations and operator theory 19 (1994), S. 135-152 
    Details
    ISSN: 1420-8989
    Keywords: Primary 46H99 ; 30G30 ; 16A38 ; Secondary 16A32 ; 93B99 ; 45E05 ; 47A53
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Letf be an analytic Banach algebra valued function and suppose that the contour integral of the logarithmic derivativef′f −1 around a Cauchy domainD vanishes. Does it follow thatf takes invertible values on all ofD? For important classes of Banach algebras, the answer is positive. In general, however, it is negative. The counterexample showing this involves a (nontrivial) zero sum of logarithmic residues (that are in fact idempotents). The analysis of such zero sums leads to results about the convex cone generated by the logarithmic residues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01206410
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  • 7
    Electronic Resource
    Electronic Resource
    Ion channels in plant signaling (1999)
    Springer
    Cellular and molecular life sciences 55 (1999), S. 183-203 
    Details
    ISSN: 1420-9071
    Keywords: Key words. Abscisic acid (ABA); ion channel; membrane transport; patch-clamp; second messenger.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Plant ion channel activities are rapidly modulated in response to several environmental and endogenous stimuli such as light, pathogen attack and phytohormones. Electrophysiological as well as pharmacological studies provide strong evidence that ion channels are essential for the induction of specific cellular responses, implicating their tight linkage to signal transduction cascades. Ion channels propagate signals by modulating the membrane potential or by directly affecting cellular ion composition. In addition, they may also be effectors at the end of signaling cascades, as examplified by ion channels which determine the solute content of stomatal guard cells. Plant channels are themselves subject to regulation by a variety of cellular factors, including calcium, pH and cyclic nucleotides. In addition, they appear to be regulated by (de)-phosphorylation events as well as by direct interactions with cytoskeletal and other cellular proteins. This review summarizes current knowledge on the role of ion chan nels in plant signaling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000180050284
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  • 8
    Electronic Resource
    Electronic Resource
    Untersuchung der Hydrolysekinetik gemischter Cyanothiocyanatochromate(III) mittels Radiohochspannungsionophorese (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 417 (1975), S. 105-113 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigation of the Kinetics of Hydrolysis of Mixed Cyanothiocyanatochromates(III) by High Voltage IonophoresisThe hydrolysis of the mixed cyanothiocyanatochromates(III) is studied with respect to the influence of the light and of the darkness upon the reaction rate. As representatives the labelled complexes [Cr(N14CS)6]3minus;, [Cr(14CN)(NCS)5]3- and trans-[Cr(14CN)2(NCS)4]3-, being easy preparated, are used. After the high voltage ionophoresis, their zones on the pherogramms are located by means of the activity distribution curves. The activities of the stamped zones of the complexes are taken into account for the concentrations, in measuring the concentration-time dependance at various pH values and temperatures. The reaction rates, the half-times and the Arrhenius energy of activation are reported. The rate of hydrolysis is dependent on the structure of the complexes and 50-fold in the light.
    Notes: Die Hydrolyse gemischter Cyanothiocyanatochromate(III) unter Lichteinwirkung sowie Lichtausschluß wird am Beispiel der markierten, präparativ leicht zugänglichen Komplexe [Cr(N14CS)6]3-, [Cr(14CN)(NCS)5]3- und trans-[Cr(14CN)2(NCS)4]3- untersucht. Nach hochspannugsionophoretischer Trennung der Hydrolysegemische werden die Zonen auf den Pherogrammen durch die Aktivitätsverteilungskurven lokalisiert. Die Aktivitäten der ausgeschnittenen Zonen dienen als Konzentrationsmaß für die Aufnahme der Konzentrations-Zeit-Abhängigkeit bei verschiedenen pH-Werten und Temperaturen. Die Geschwindigkeitskonstanten, die Halbwertszeiten und die Aktivierungsenergien nach Arrhenius werden angegeben. Die Hydrolysegeschwindigkeit ist von der jeweiligen Struktur der Komplexe abhängig und bei Lichteinwirkung etwa um den Faktor 50 größer.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19754170206
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