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  • Chemistry  (21)
  • CTM2008-04517; CTM2009-06269-E; CTM2010-11955-E/MAR; DATE/TIME; EMSODEV; EMSO implementation and operation: DEVelopment of instrument module; EMSO-Link; ES5110020; Fixed Point Open Ocean Observatories Network; FixO3; Humidity, relative; Implementation of the Strategy to Ensure the EMSO ERICs Long-term Sustainability; Instalació de sensors en observatorio submari expansible OBSEA; Instalacion de equipos en superfície para la ampliación de las prestaciones del observatorio submarino obsea; Instrumentación y tecnologías aplicadas al estudio, caracterización y explotación sostenible del medio marino; Integración de sensores para monitorización submarina en una red con sincronización temporal; Interoperabilidad e instrumentación de plataformas autónomas marinas para la monitorización sísmica; Interoperabilidad en redes de sensores marinos y ambientales; Interoperabilitat en xarxes de sensors marins i ambientals; INTIMAS; INTMARSIS; JERICO-NEXT; Joint European Research Infrastructure network for Coastal Observatory – Novel European eXpertise for coastal observaTories; MarInTech; MELOA; MeteoMet2; Metrology for essential climate variables; Multi-purpose/Multi-sensor Extra Light Oceanography Apparatua; NeXOS; Next generation, Cost-effective, Compact, Multifunctional Web Enabled Ocean Sensor Systems Empowering Marine, Maritime and Fisheries Management; Nuevas tecnologías para el seguimiento de la acidificación marina en el espacio natural Costa del Garraf; OBSEA:UPC:2009-05; Operatividad laboratorio submarino obsea; OPOBSEA; Precipitation; Pressure, atmospheric; PT2009-0080; Redes de sensores submarinos acústicos aplicados al seguimiento de especies de interes comercial; Redes de sensores submarinos autónomos y cableados aplicados a la monitorización remota de indicadores biológicos; RESBAC; RESBIO; SARTI-MAR; SINEOS; Sismòmetre marí digital amb connexió per cable; Sistemas inalambricos para la extension de observatorios submarinos; Sistemes dAdquisició Remota de dades i Tractament de la Informació en el Medi Marí; Temperature, air; VALTEC09-1-0059; Weather Station, Vantage Pro2, Davis; Wind direction; Wind speed
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  • 2015-2019
  • 1985-1989  (21)
  • 1988  (12)
  • 1985  (9)
Collection
Keywords
  • Chemistry  (21)
  • CTM2008-04517; CTM2009-06269-E; CTM2010-11955-E/MAR; DATE/TIME; EMSODEV; EMSO implementation and operation: DEVelopment of instrument module; EMSO-Link; ES5110020; Fixed Point Open Ocean Observatories Network; FixO3; Humidity, relative; Implementation of the Strategy to Ensure the EMSO ERICs Long-term Sustainability; Instalació de sensors en observatorio submari expansible OBSEA; Instalacion de equipos en superfície para la ampliación de las prestaciones del observatorio submarino obsea; Instrumentación y tecnologías aplicadas al estudio, caracterización y explotación sostenible del medio marino; Integración de sensores para monitorización submarina en una red con sincronización temporal; Interoperabilidad e instrumentación de plataformas autónomas marinas para la monitorización sísmica; Interoperabilidad en redes de sensores marinos y ambientales; Interoperabilitat en xarxes de sensors marins i ambientals; INTIMAS; INTMARSIS; JERICO-NEXT; Joint European Research Infrastructure network for Coastal Observatory – Novel European eXpertise for coastal observaTories; MarInTech; MELOA; MeteoMet2; Metrology for essential climate variables; Multi-purpose/Multi-sensor Extra Light Oceanography Apparatua; NeXOS; Next generation, Cost-effective, Compact, Multifunctional Web Enabled Ocean Sensor Systems Empowering Marine, Maritime and Fisheries Management; Nuevas tecnologías para el seguimiento de la acidificación marina en el espacio natural Costa del Garraf; OBSEA:UPC:2009-05; Operatividad laboratorio submarino obsea; OPOBSEA; Precipitation; Pressure, atmospheric; PT2009-0080; Redes de sensores submarinos acústicos aplicados al seguimiento de especies de interes comercial; Redes de sensores submarinos autónomos y cableados aplicados a la monitorización remota de indicadores biológicos; RESBAC; RESBIO; SARTI-MAR; SINEOS; Sismòmetre marí digital amb connexió per cable; Sistemas inalambricos para la extension de observatorios submarinos; Sistemes dAdquisició Remota de dades i Tractament de la Informació en el Medi Marí; Temperature, air; VALTEC09-1-0059; Weather Station, Vantage Pro2, Davis; Wind direction; Wind speed
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  • Polymer and Materials Science  (9)
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  • 2015-2019
  • 1985-1989  (21)
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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of asymmetric diglycidyl ester compounds. Reaction with aromatic diamines (1988)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 156 (1988), S. 37-48 
    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: Neue Diglycidylester wurden in Gegenwart von quaternären Ammoniumsalzen als Katalysator aus ihren entsprechenden Dicarbonsäuren und Epichlorhydrin hergestellt. Die neuen unsymmetrischen Produkte wurden durch spektroskopische Methoden identifiziert und als Monomere in einer Aushärtungsreaktion eingesetzt. Der Reaktionsverlauf wurde mittels IR-Spektroskopie verfolgt. Die Struktur einiger 1öslicher Zwischenprodukte wurde durch 13C-NMR-Spektroskopie ermittelt. Das thermische Verhalten dieser ausgehärteten Epoxidharze wurde ebenfalls untersucht.
    Notes: New diglycidyl esters coming from the corresponding diacids and epichlorohydrin were synthetized using a quaternary ammonium salt as a catalyst. The new asymmetric compounds were characterized by spectroscopic methods and employed as starting monomers in a crosslinking process. The course of the reactions was followed by IR spectroscopy. Some intermediate species were identified in the onset of the reactions by recording 13C-NMR spectra until the products became insoluble in the usual deuterated solvents. The thermal behaviour of these cured epoxy resins was also studied.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1988.051560104
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  • 2
    Electronic Resource
    Electronic Resource
    Über Struktur und Stereoselektivität von 2-Norbornen-7-yl-Radikalen und -Carbenoiden (1985)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 4281-4284 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Structure and Stereoselectivity of 2-Norbornen-7-yl Radicals and CarbenoidsReduction of 7,7-diiodonorbornene (1) with Grignard reagents proceeds via the 7-iodo-2-norbornen-7-yl radical 2. From the observed syn-stereoselectivity, the absence of π-delocalization in 2 is inferred. This result agrees with the existence of an equilibrium mixture of two classical pyramidal structures (2a and 2b), in which the syn-isomer 2a predominates. The reaction of 1 with methyllithium takes place with anti-stereoselectivity; this fact proves that the anti-carbenoid 4b-M is more stable than the syn-isomer.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19851181035
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  • 3
    Electronic Resource
    Electronic Resource
    Selektivität bei der Umsetzung von Carbokationen mit Nucleophilen, 2. Solvolyse-Mechanismen bei 7-Norbornyl-trifluormethansulfonaten (1985)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 2557-2560 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Selectivity in the Reaction of Carbocations with Nucleophiles, 2. Solvolytic Mechanisms of 7-Norbornyl TrifluoromethanesulfonatesThe reactions of 7,7-bis(trifluoromethylsulfonyloxy)norbornane (4) with several metal cyanides in dipolar aprotic solvents are studied. The results obtained (Table 1) lead to the conclusion that the solvolysis of 7-substituted 7-norbornyl trifluoromethanesulfonates takes place either according to a kc mechanism or with fission of the S — O bond. In no instance is a C — O fission following an SN2 mechanism to be expected. - The selectivity of the reaction of the intermediate carbocations with nucleophiles cannot be explained by means of N+ correlations nor by the reactivity-selectivity relationship, but can be rationalized according to the HSAB principle.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19851180632
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  • 4
    Electronic Resource
    Electronic Resource
    Mechanismus der Reaktion von Trifluormethansulfonsäureanhydrid mit Ketonen: Umsetzung mit Campher (1985)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 1282-1288 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mechanism of the Reaction of Trifluoromethanesulfonic Anhydride with Ketones: Reaction with CamphorReaction of camphor (1) with trifluoromethanesulfonic anhydride (Tf2O) in the absence of base yields a mixture of 2,2-bis(trifluoromethylsulfonyloxy)camphane (9), 1,2-bis(trifluoromethylsulfonyloxy)-endo-isocamphane (10), and 2,4-bis(trifluoromethylsulfonyloxy)-endo-isocamphane (11). The ratio of these compounds depends on the reaction temperature. 9, 10, and 11 could not be isolated because, during the final aqueous treatment, they undergo hydrolysis leading to 1, 1-camphenyl triflate (2), and 4-camphenyl triflate (3). In the presence of 2,6-di-tert-butyl-4-methylpyridine (DTBMP) 2 is the main reaction product. The reaction rate is independent of the base concentration. It can be inferred that the base only neutralized the trifluoromethanesulfonic acid (TfOH), without reaction with Tf2O. - Reaction of 2 with TfOH in dichloromethane takes place with addition and Nametkin rearrangement. The ratio of these reactions depends on the reaction temperature. No rearrangement products are obtained in the reaction of 1 with TfOH. The reaction paths for the reaction of 1 with Tf2O are compared with those for other ketones, and some conclusions on the electronic requirements of the Nametkin rearrangement are inferred.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19851180344
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  • 5
    Electronic Resource
    Electronic Resource
    Dependence of glass-transition temperature Tg on tacticity of poly(vinyl chloride). A preliminary study by differential scanning calorimetry (1988)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 189 (1988), S. 567-572 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The glass-transition temperature, Tg, of poly(vinyl chloride) (PVC) has been found to depend linearly on both the overall isotactic triad content and a small fraction of isotactic triads. It was previously demonstrated, that the latter react with sodium benzenethiolate at temperatures as low as -30°C, probably because they adopt a definite local conformation. In general, it was believed before that the tacticity effect on Tg occurs only for disubstituted C—C-polymers, the results obtained in this work for PVC would suggest that specific conformations of isotactic triads can also enhance the motion of chain segments in the polymer.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1988.021890310
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  • 6
    Electronic Resource
    Electronic Resource
    Theoretical prediction of heterogeneous one-dimensional heat transfer coefficients for fixed-bed reactors (1985)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 31 (1985), S. 868-870 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690310527
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  • 7
    Electronic Resource
    Electronic Resource
    Reaction-induced mass discrimination in XQQ instruments. Absolute cross-sections for N2+· + SF6 → N2 + SFx+ (x=1-5) (1988)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 2 (1988), S. 41-46 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Dynamically-correct branching ratios can be measured in a XQQ tandem mass spectrometer (MS/MS) under single-collision conditions when the key MS/MS parameters are properly selected to correct for reaction-induced mass discrimination within the RF-only quadrupole mass filter (Q2). The energy dependence of the cross-section, σ(E), for the reaction N2+· + SF6 → N2+SFx+ (x = 1-5) was measured in the NBS triple quadrupole (QQQ) tandem mass spectrometer. For P≃0.02-0.13 mTorr and E ≃ 5-60 eV (Lab) [the range of collision energies used for collisionally activated dissociation (CAD)], identical σ(E) were measured from both the rate of reactant ion decay and the rate of product ion formation. Therefore, these σ values are substantially free from kinetic interferences (i.e., no back reactions, no impurity reactions, no scattering losses, minimal fringing fields, no mass discrimination, well-defined gas target, etc.). Moreover, there is probably no significant systematic error in our measurements of the absolute σ values for N 2+· + SF6 → N2+SFx+ (x = 1-5) because the σ values we measured with this same technique for Ne +·+ Ne → Ne+Ne+·, Ar+· + Ar → Ar+Ar+·, and Ar+·+N2 → Ar+N2+· agreed well with literature values obtained with several well-established techniques.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290020207
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  • 8
    Electronic Resource
    Electronic Resource
    Electrochemical synthesis and optical analysis of poly[(2,2′-dithienyl)-5,5′-diylvinylene] (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 26 (1988), S. 911-920 
    Details
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The electrochemical synthesis of poly[(2,2′-dithienyl)-5,5′-diylvinylene tetrafluoroborate] (PDTE/BF4) has been accomplished and provides coppery-black free-standing films with a room-temperature four-probe conductivity as high as 15 (Ω cm)-1. The conductivity and morphology of the films were found to be strongly dependent on synthetic conditions. The oxidized form of PDTE is not air stable, as evidenced by a rapid, three order of magnitude drop in the conductivity. Optoelectrochemical experiments demonstrate that bipolarons are the main charge-carrying species in conductive PDTE and allow their evolution to be followed as a function of oxidation.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1988.090260415
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  • 9
    Electronic Resource
    Electronic Resource
    Organochlorine pesticides by negative ion chemical ionization. Brain metabolites of lindane (1988)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 16 (1988), S. 279-284 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A gas chromatographic/mass spectrometric technique for the analysis of organochlorine compounds using negative ion chemical ionization is presented. Detection limits for some compounds (penta- and hexachlorobenzene and p,p′-DDE) are of the order of 60-120 fg injected, while others (lindane, aldrin, etc.) are in the low picogram range (1.0 pg for lindane). The extreme selectivity for chlorine-containing compounds enables the direct analysis of homogenates of biological samples without any extraction or purification step. Metabolic studies can thus be remarkably simplified. Results are presented on the application of this technique to the analysis of lindane metabolites found in rat brain after treatment with this pesticide.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200160154
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  • 10
    Electronic Resource
    Electronic Resource
    Curing of new trimellitimide glycidyl ester derivatives with aromatic diamines (1985)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 136 (1985), S. 159-175 
    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: Die Aushärtungsreaktion von neuen, Imidgruppen enthaltenden Epoxidharzen mit zwei aromatischen primären Diaminen (m-Phenylendiamin und Diaminodiphenylmethan) wurde untersucht. Der Polymerisationsverlauf wurde mittels spektroskopischer Methoden (IR und 13C-NMR) verfolgt. Die Aushärtung geschah hauptsächlich durch die Kettenverlängerung bei niedrigen Temperaturen, sie verlief jedoch nicht besonders rasch. Die Vernetzung trat durch Polykondensation von sekundären Aminogruppen mit Epoxiden bei Erreichen des Gelpunktes ein (ca. 15 h bei 60°C). Der Einfluß von Verunreinigungen, die als Katalysatoren wirken, kann durch die Reaktionsgeschwindigkeit bestimmt werden. Auf diese Weise wurde eine kinetische Studie durchgeführt. Das thermische Verhalten dieser ausgehärteten Epoxidharze wurde ebenfalls untersucht.
    Notes: The cure behaviour of new epoxy resins containing a preformed imide ring with m-phenylenediamine (mPDA) and diaminodiphenylmethane (DDM) was investigated. The progress of polymerization was followed by recording IR and 13C-NMR spectra at time intervals. The curing proceeded mainly by chain extension at low temperatures, the reaction being not very fast, whereas crosslinking occurred as the gel point was reached (about 15 h at 60°C) by reaction of secondary amino groups with epoxides. Impurities influence, playing the part of catalysts, could be determined from the reaction rate of glycidyl and amino groups. So a kinetic study was made. The thermal behaviour of these cured epoxy resins was also studied.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1985.051360112
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