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  • Artikel  (71)
  • Chemistry  (66)
  • Organic Chemistry  (6)
  • Condensed Matter: Electronic Properties, etc.  (3)
  • Chemical Engineering  (2)
  • Projection neurons  (2)
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  • Artikel  (71)
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  • 1
    Digitale Medien
    Digitale Medien
    Processing of antennular input in the brain of the spiny lobster, Panulirus argus (1996)
    Springer
    Journal of comparative physiology 178 (1996), S. 579-604 
    Details
    ISSN: 1432-1351
    Schlagwort(e): Crustacean ; Chemoreception ; Mechanoreception ; Deutocerebrum ; Motoneurons ; Projection neurons
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Neurons in the brain of the spiny lobster that respond to chemical and mechanical stimulation of the antennule (antenna I) were recorded and stained intracellularly. Described here are neurons that do not arborize in the olfactory and accessory lobes of the deutocerebrum, but rather primarily target the lateral and/or the median antennular neuropils of the deutocerebrum. Some of the neurons also extend into the antennal and tegumentary neuropils of the tritocerebrum and the neuropils of the median protocerebrum. Included are antennular sensory afferents, antennular motoneurons, projection neurons descending from the central brain, projection neurons ascending from the central brain and projection neurons descending from the eyestalk ganglia. Collectively, these neurons consitutute a novel antennular sensory pathway that is parallel to and independent of the antennular olfactory pathway. The novel pathway integrates mechanosensory and non-olfactory chemosensory information in the lateral and/or the median antennular neuropils, which also serve as lower motor centers of the antennule. Division of the arthropod deutocerebrum into two, functionally distinct chemosensory pathways may reflect differences in how chemosensory information is processed that is fundamental to understanding the origin of the sense of smell.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00227374
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  • 2
    Digitale Medien
    Digitale Medien
    Processing of antennular input in the brain of the spiny lobster, Panulirus argus (1996)
    Springer
    Journal of comparative physiology 178 (1996), S. 605-628 
    Details
    ISSN: 1432-1351
    Schlagwort(e): Crustacean ; Olfaction ; Mechanoreception ; Local interneurons ; Projection neurons
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Neurons in the olfactory deutocerebrum of the spiny lobster, Panulirus argus, were recorded intracellularly and filled with biocytin. Recorded neurons arborized in the olfactory lobe (OL), a glomerular neuropil innervated by olfactory and some presumptive mechanosensory antennular afferents. The neurons responded to chemosensory input from the lateral antennular flagellum bearing the olfactory sensilla but not the medial flagellum bearing many non-olfactory chemosensory sensilla. Many neurons received additional mechanosensory input. Thus the OL integrates specifically olfactory with mechanosensory input. OL neurons had multiglomerular arborizations restricted to one or two of the three horizontal layers of the columnar glomeruli. OL local interneurons comprised “core” neurons with tree-like neurites and terminals in the base of the glomeruli and “rim” neurons with neurites surrounding the OL and terminals in the cap/subcap. The somata of OL local interneurons lay in the medial soma cluster (100000 somata). OL projection neurons arborized in the base of the glomeruli and ascended via the olfactory glomerular tract to the lateral protocerebrum. A parallel projection pathway is constituted by projection neurons of the accessory lobe, a glomerular neuropil without afferent innervation but intimate links to the OL. The projection neuron somata constituted the lateral soma cluster (200000 somata).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00227375
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  • 3
    Digitale Medien
    Digitale Medien
    Quantitative analysis of ethylenediamine in plasma by capillary column gas chromatography (1986)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 9 (1986), S. 548-554 
    Details
    ISSN: 0935-6304
    Schlagwort(e): Gas liquid chromatography (GLC) ; Fused silica capillary columns ; Alkali flame ionization detection (AFID) ; Mass spectrometry (MS) ; Quantitation in human serum ; Ethylenediamine ; Aminophylline ; Small molecular weight amines and diamines ; m-Toluoyl derivatives ; Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: A specific and sensitive method for the determination of ethylenediamine in human plasma is described. The aqueous sample is treated with m-toluoyl chloride, yielding the N,N′-bis(m-toluoyl) derivative of the diamine, which is extracted into dichloromethane and quantitated after “on column” methylation by capillary gas liquid chromatography with alkali flame ionization detection. The corresponding derivative of putrescine serves as internal standard. The assay is reproducible and calibration curves are linear over the concentration range 0.05 to 10 μg · ml-1. The lower detection limit is about 10 ng · ml-1. The structures of the compounds of interest eluting from the capillary column are examined by gas liquid chromatography/mass spectrometry. The assay has been applied to the analysis of ethylenediamine in plasma following the administration of aminophylline and ethylenediamine in a cross-over study to patients with bronchopulmonary diseases. The method also proves suitable for measuring other primary and secondary amines and diamines in aqueous solutions by gas liquid chromatography.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jhrc.1240091002
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  • 4
    Digitale Medien
    Digitale Medien
    Continuous reactive processing I: Reactive coating (1985)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 25 (1985), S. 541-547 
    Details
    ISSN: 0032-3888
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: The big success of the reaction injection molding (RIM) process has brought about a marked interest in reacting polymer processing. In the present work, we study the technical feasibility of a continuous process to coat metallic conductors using reacting polymers. In the envisioned system, RIM type reactants are mixed and then injected into a tubular reactor through the center of which we pass the cable to be coated. The predictions of the mathematical model developed show that a feasible process can be designed by adequate control of the heat transfer phenomena. The process needs in general, a low reactor temperature and a high cable temperature.
    Zusätzliches Material: 11 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pen.760250906
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  • 5
    Digitale Medien
    Digitale Medien
    Suspension polymerization of vinyl chloride. I. Influence of viscosity of suspension medium on resin properties (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 37 (1989), S. 145-166 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: The suspension polymerization of vinyl chloride is studied in a bench-scale reactor adequately reproducing reaction conditions and resin properties of industrial relevance. The evolution of particle morphology is analyzed at different stages of conversion, and a model for particle formation is verified. The influence of viscosity of the suspension medium is analyzed in relation to molecular weight distribution and particle morphology.
    Zusätzliches Material: 21 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1989.070370111
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  • 6
    Digitale Medien
    Digitale Medien
    Heterogeneous suspension polymerization of vinyl chloride: Phase distribution and evolution (1994)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 34 (1994), S. 532-540 
    Details
    ISSN: 0032-3888
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: A model for the phase distribution and evolution of the heterogeneous (suspension) polymerization of vinyl chloride is presented. Experimental information on pressure, temperature, and conversion has been obtained from a 34 liter bench reactor reproducing reaction conditions and product properties typical of industrial operation. A calculation procedure based on simple plant data is proposed for the description of the phase compositions and their evolution over the entire process. Results based on classical Flory-Huggins theory of solutions are presented and compared with existing data.
    Zusätzliches Material: 14 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pen.760340612
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  • 7
    Digitale Medien
    Digitale Medien
    Photochemie und Photophysik von 3-(2-Isoxazolinyl)-phenylketonenHerrn Prof. Dr. E. Schmitz zum 60. Geburtstag gewidmet (1988)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 330 (1988), S. 735-747 
    Details
    ISSN: 0021-8383
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Photochemistry and Photophysics of 3-(2-Isoxazolinyl)-phenylketones3-Benzoyl-Δ2-1,2-oxazolines (1-6) are formed by 1,3-dipolar cycloaddition between benzoylnitril-N-oxide (8) and dihydrofurane 9 or 1,3-dioxep-5-enes (10a-c). The preparative yields are small due to the competitive dimerization of the dipole 8. Two stereoisomers are obtained by using 2-substituted 1,3-dioxep-5-enes as dipolarophiles. The different steric position of the substituents in 3-6 gives rise to different spectral data. The synthesized ketones possess triplet states with a high degree of charge transfer character. Therefore, the ability to H-abstraction reaction from alcohols is small. For ketone 2 and methanol as H-donor a rate constant of kHMeOH = 4,1 · 102 M-1s-1 is determined. Also by electron transfer reactions with triethylamine and some onium compounds the reactivity of the T1 of the ketones 1-6 is less compared to those of nπ* excited ketones. The photolysis of the ketones takes place very unselectively and leads to a product mixture. The quantum yields for the decay of the ketones are 10-2 to 10-3.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/prac.19883300508
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  • 8
    Digitale Medien
    Digitale Medien
    Substituierte 3,4-Diamino-thieno[2,3-b]pyrrole (1986)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 328 (1986), S. 459-464 
    Details
    ISSN: 0021-8383
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Substituted 3,4-Diamino-thieno[2,3-b]pyrroles
    Zusätzliches Material: 2 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/prac.19863280325
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  • 9
    Digitale Medien
    Digitale Medien
    Eine neue Synthese von Organoborsulfolen (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 394 (1972), S. 152-156 
    Details
    ISSN: 0044-2313
    Schlagwort(e): Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: The cleavage of di-tert.-butylsulfane by dihalogenoorganoboranes leads to the formation of t-butylhalogenide and the corresponding borothin according to 3 RBX2 + 3 tBu2S → (RBS)3 + 6 tBuX (R = nBu, C6H5; X = Cl, Br, J).
    Notizen: Di-tert.-Butylsulfan setzt sich mit Dihalogenoorganoboranen RBX2 unter Spaltung der Thioätherbindung zum tert.-Butylhalogenid und dem entsprechend substituierten Borsulfol um: 3 RBX2 + 3 tBu2S → (RBS)3 + 6 tBuX (R = nBu, C6H5; X = Cl, Br, J).
    Zusätzliches Material: 1 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/zaac.19723940119
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  • 10
    Digitale Medien
    Digitale Medien
    Zur Kenntnis der Verbindung H3P-BJ3 (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 394 (1972), S. 290-292 
    Details
    ISSN: 0044-2313
    Schlagwort(e): Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Phosphine or phosphonium iodide react with boron triiodide in CS2 or benzene to form the adduct H3P-BI3. The water-sensitive white solid is thermally stable up to ∼150°C. Its IR and NMR spectrum are recorded.
    Notizen: Phosphin bzw. Phosphoniumjodid reagieren mit Bortrijodid in CS2 oder Benzol unter Bildung des Adduktes H3P-BJ3. Der hydrolyseempfindliche weiße Festkörper ist thermisch bis ∼150°C stabil. Sein IR- und NMR-Spektrum werden beschrieben.
    Zusätzliches Material: 1 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/zaac.19723940311
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