ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Chemistry  (46)
  • Angiosperms  (3)
  • Photosystem II  (3)
  • Arbeitsvermittlung
  • 1
    Electronic Resource
    Electronic Resource
    Properties of the proteinaceous component acting as apoenzyme for the functional plastoquinone redox groups on the acceptor side of system II
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 636 (1981), S. 17-26 
    Details
    ISSN: 0005-2728
    Keywords: Electron transfer ; Fluorescence induction ; Oxygen evolution ; Photosystem II ; Plastoquinone ; X320-B-apoprotein
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2728(81)90070-0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Effect of partial removal and readdition of a 23 kilodalton protein on oxygen yield and flash-induced absorbance changes at 320 nm of inside-out thylakoids
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 765 (1984), S. 1-6 
    Details
    ISSN: 0005-2728
    Keywords: (Spinach chloroplast) ; Electron transfer ; Oxygen evolution ; Photosystem II ; Plastoquinone ; Thylakoid membrane protein
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2728(84)90149-X
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The modification of atrazine binding by the redox state of the endogenous high-spin iron and by specific proteolytic enzymes in Photosystem II membrane fragments and intact thylakoids
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 935 (1988), S. 173-183 
    Details
    ISSN: 0005-2728
    Keywords: (Spinach thylakoid) ; Atrazing binding ; Iron redox state ; Photosystem II ; Proteinase
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2728(88)90214-9
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Initiierung interkristalliner Schwingungsrisse in interstitiell freien (IF-) Stählen (1997)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 28 (1997), S. 287-292 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigations of initiation of intercrystalline fatigue cracks of interstitial free (IF-) steelsWhile investigation the fatigue strength of interstitial free steels, intercrystalline fatigue cracks have occurred as a damage which could reduce the application range of this material, being wellknown for its excellent depth drawing features. Through metallographic examination the known causes of the damage like formation of grain cover tertiary zementit of precipitations on the grain boundaries could be excluded. In this paper investigation results are represented which are received through high-resolution analyses techniques (TEM, AES).
    Notes: Bei Untersuchungen zur Ermüdungsfestigkeit interstitiell freier Stähle sind mit dem Auftreten interkristalliner Schwingungsrisse erstmals Schadensmechanismen aufgetreten, die den Einsatzbereich dieses für seine hervorragenden mechanischen Eigenschaften bekannten Werkstoffes erheblich begrenzen können. In metallographischen Untersuchungen konnten die für dieses Schadensbild bekannten Ursachen wie die Bildung von schalenförmigem Tertiärzementit oder die Schwächung der Korngrenzen durch Ausscheidungen ausgeschlossen werden. Im vorliegenden Beitrag werden Untersuchungsergebnisse mit hochauflösenden elektronenoptischen Analyseverfahren (TEN, AES) vorgestellt.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19970280610
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    On subspecific taxa ofHypericum empetrifolium (Hypericaceae) from Crete (1987)
    Springer
    Plant systematics and evolution 155 (1987), S. 165-187 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Guttiferae ; Hypericaceae ; Growth form ; vicarious taxa ; nomenclature ; Flora of the Mediterranean ; of Greece ; of Crete
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The morphology, altitudinal distribution and phytocoenology ofHypericum empetrifolium Willd., var.oliganthum Rech. fil. and var.tortuosum Rech. fil. are reassessed and as a result, the taxa are treated at subspecific rank. Essential characters proved to be growth form, number of flowers, foliage and epidermal surface characters, shape of seeds and testa sculpturing. The different growth forms can be interpreted as adaptations to the local habitats.Hypericum empetrifolium Willd. subsp.empetrifolium is a low subshrub of various vegetation types known as phrygana whereasHypericum empetrifolium Willd. subsp.oliganthum (Rech. f.)Hagemann grows as a cushion-like dwarf shrub in chasmophyte associations rich in relic species.Hypericum empetrifolium Willd. subsp.tortuosum (Rech. f.)Hagemann is confined in the high mountain regions and grows as a true dwarf espalier shrub with low spreading shoots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00936297
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Organogenetic capacity of leaves: The significance of marginal blastozones in angiosperms (1996)
    Springer
    Plant systematics and evolution 199 (1996), S. 121-152 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Leaf development ; organismal approach ; blastozone ; organogenetic competence ; primary morphogenesis ; marginal meristems ; topography ; eumeristem ; cytohistological gradients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new term — the “blastozone” — is proposed to designate regions of the shoot competent for organogenesis. It is argued that the notion of “marginal meristems” is based on the cell theory and thus may not be appropriate to elucidate the process of organ formation. For instance, with respect to the occurrence of initials and of an elevated cell division rate marginal meristems have been shown to be doubtful structures. Furthermore, organogenetic competent regions form only parts of the meristems of the shoot. The study of blastozones from an organismic perspective reveals primary morphogenetic events such as initiation, incorporation, and fusion processes. Loss of morphogenetic competence is associated with histogenetic events, e.g., trichome outgrowth, and indicates the onset of processes leading to maturation. The marginal blastozone of the leaf is then used up although meristem features continue to be expressed. A series of SEM studies in several genera exemplifies the proposed viewpoint, demonstrating some of the morphogenetic potentialities of angiosperm leaf marginal blastozones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984901
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    The cytological basis of the plastid inheritance in angiosperms (1989)
    Springer
    Protoplasma 152 (1989), S. 57-64 
    Details
    ISSN: 1615-6102
    Keywords: Angiosperms ; Plastid inheritance, uniparental ; Plastid inheritance, biparental ; Plastid distribution ; Plastid transmission
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01323062
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Polytrifluormethylstyrole, eine polymerklasse mit aussergewöhnlichen optischen eigenschaftenVortrag anläßlich der Tagung der Fachgruppe “Makromolekulare Chemie” der Gesellschaft Deutscher Chemiker über “Synthetische Polymere mit außergewöhnlichen Eigenschaften” in Bad Nauheim am 19. und 20. April 1982Herrn Prof. Dr. Otto Bayer in memoriam gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 109 (1982), S. 285-293 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Homopolymers of 2-, 3- and 4-trifluoromethylstyrene, 4-perfluoroisopropylstyrene, 3,5-bis-trifluoromethyl-styrene and a 1 : 1 copolymer of 2,4- and 2,5-bis-trifluoromethyl-styrene have been synthesized and the refractive indices nD, Abbe-numbers νD and glass transition temperatures of the polymers have been determined.With regard to optical applications poly-2-trifluoromethyl-styrene is particularly interesting since its optical properties are in a region of the n-ν-diagram that has not been reached by thermoplastic polymers or inorganic glasses before.The most important mechanical and thermal properties of this polymer are reported. Reactivity ratios of the binary copolymerisation of 2-trifluoromethyl-styrene with styrene, methyl-methacrylate and n-butyl-acrylate are listed as well as optical data and glass transition temperatures of some copolymers of 2-trifluoromethyl-styrene.
    Notes: Homopolymerisate aus 2-, 3- und 4-Trifluormethylstyrol, 4-Perfluorisopropylstyrol, 3,5-Bis-trifluormethylstyrol und ein 1 : 1 Copolymerisat aus 2,4- und 2,5-Bis-trifluormethylstyrol wurden hergestellt und Brechungsindices, Abbe-Zahlen sowie Glasübergangstemperaturen der Polymerisate bestimmt.Von diesen Thermoplasten ist das Poly-2-trifluormethylstyrol im Hinblick auf optische Anwendungen besonders interessant, da es in einem weder von anorganischen Gläsern noch von bekannten thermoplastischen Kunststoffen bisher erreichten Gebiet des n-v-Diagrammes liegt.Die wichtigsten mechanischen und thermischen Eigenschaften dieses Polymeren und die Copolymerisationsparameter für die binäre Copolymerisation von 2-Trifluormethylstyrol mit Styrol, Methylmethacrylat und n-Butylacrylat wurden bestimmt. Optische Daten und Glastemperaturen einiger Copolymerisate des 2-Trifluormethylstyrols werden mitgeteilt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1982.051090119
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    [2π + 2π]-Photocycloadditionen in Tricyclo[3.2.2.02,4]nonadien-Derivaten. Synthese einfach überbrückter Tris-σ-homobenzol-Verbindungen (1974)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 1971-1987 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: [2π+2π]-Photocycloaddition Reactions in Tricyclo[3.2.2.02.4]nonadiene Derivatives. Synthesis of Singly Bridged Tris-σ-homobenzene CompoundsThe direct - not, however the acetone sensitized -excitation (λ 〉 280 nm) of the tricyclo-[3.2.2.02,4]nonadiene diester 6a - c and the bis-trifluoromethyl derivatives 6d, e (Δ 〉 230 nm), resp., yields (60-90%) the pentacycles 7a - e resulting from a [2π + 2π]-cycloaddition reaction. A [2π + 2σ]-addition with participation of the cyclopropane ring (leading to 8a - e) is not observed. With comparable selectivity (〉 90% isolated yield) the [2π + 2π]-cyclisation takes place in the 3-oxa-diester 10 (to 11). The tris-σ-homobenzene compounds 7a - e and 11, resp. are thermally isomerized exclusively in a 2σ → 2π-cleavage to the starting dienes 6a - e and 10, resp. (Ea (7a) = 22 kcal/mole; A = 2.2·1012 S-1-1). As exemplary cases the addition of HCl, CH3OH and H2O to the diester 7a and to the dicarboxylic acid 7g, resp., has been studied; in a rather selective way the adducts 13 and 14 (ratio 9:1) are formed in good yields. With the usual attack upon the nonsubstituted edge of the bishomocyclobutadiene partial structure in 7a being sterically hindered, tetracyanoethylene forms the 1:1 adducts 15 and 16.
    Notes: Die direkte - nicht aber die aceton-sensibilisierte -Lichtanregung (λ 〉 280 nm) der Tricyclo[3.2.2.02,4]nonadien-diester 6a - c bzw. der Bis-trifluormethyl-Derivate 6d,e (λ 〉 230 nm) liefert in 60-80 proz. bzw. 90 proz. Ausbeute die aus einer [2π + 2π]-Cycloaddition resultierenden Pentacyclen 7a - e. Eine [2π + 2σ]-Reaktion unter Beteiligung des Cyclopropanringes (zu 8a - e) ist daneben nicht nachweisbar. Gleichermaßen einheitlich (isolierte Ausbeute 〉 90%) verläuft die [2π + 2π]-Cyclisierung im 3-Oxa-Diester 10 (zu 11). Die Tris-σ-homobenzole 7a - e bzw. 11 werden thermisch ausschließlich unter 2σ → 2π-Spaltung zu den Ausgangsdienen der Photoreaktionen 6a - e bzw. 10 isomerisiert (Ea (7a) = 22 kal/mol; A = 2.2·1012s-1). Am Beispiel des Diesters 7a bzw. der Dicarbonsäure 7g wurde die Addition von HCl und CH3OH bzw. Wasser studiert, wobei selektiv die Addukte 13 und 14 (Verhältnis 9:1) in durchweg guten Ausbeuten gewonnen werden. Bei sterischer Behinderung des üblichen Angriffs auf die unsubstituierte Kante des Bishomocyclobutadien-Partialgerüsts in 7a setzt sich TCÄ zu den 1:1-Addukten 15 und 16 um.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19741070620
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Einfluß der Gaszusammensetzung auf die Verflüssigung von Chlor bei hohem Verflüssigungsgrad (1967)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 39 (1967), S. 744-747 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird ein Verfahren diskutiert, bei dem das durch NaCl-Elektrolyse gewonnene CO2-haltige Chlor nach einer mehrstufigen Verflüssigung vor Ablauf in die Lagerung in einem „Endkühler“ mit Rohgas gestrippt und das ausgetriebene CO2 als Schutzgas im Verflüssigungssystem im Kreislauf gefahren wird. Der sich dabei ergebende höhere CO2-Gehalt in den Restgasphasen vermindert die Gefahr der Bildung eines zündfähigen H2/Cl2-Gemisches, und das aus dem Endkühler ablaufende flüssige Chlor weist nur noch geringe Restverunreinigungen auf.  -  Es wurden außerdem die Wassergehalte der Chlorgas- und Flüssigphasen in den einzelnen Verflüssigungsstufen ermittelt und durch Einbau eines Molekularsieb-Hochdrucktrockners zwischen der ersten und zweiten Kondensationsstufe eine weitgehende Trocknung des Chlors erreicht.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330391212
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...