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  • 1
    Electronic Resource
    Electronic Resource
    Catalytic oxidation of carbon monoxide over ruthenium/silicon dioxide. An in situ infrared and kinetic study (1984)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 88 (1984), S. 892-897 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150649a014
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  • 2
    Electronic Resource
    Electronic Resource
    Catalytic oxidation of carbon monoxide over rhodium/silicon dioxide. An in situ infrared and kinetic study (1984)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 88 (1984), S. 898-904 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150649a015
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  • 3
    Electronic Resource
    Electronic Resource
    Surface photochemistry: Adsorption and dissociation of CH3Cl on clean and K-promoted Pd(100) surfaces (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 8510-8519 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The photochemistry of adsorbed CH3Cl on clean and potassium-dosed Pd(100) surfaces has been studied by illumination with low-intensity UV light from a high-pressure Hg lamp. The effects of illumination were established by post-irradiation thermal desorption, Auger and photoelectron spectroscopic measurements. Evidences are presented for photodissociation of the C–Cl bond to give surface bound methyl group coadsorbed with chlorine. The thermal decomposition of the surface methyl is accompanied by desorption of methane, and small amounts of ethane and ethylene. The presence of preadsorbed potassium greatly enhanced the extent of photodissociation of the C–Cl bond. The efficiency of potassium adatoms depended on its amount, i.e., on the work function of the coadsorbed systems. From the study of the wavelength dependence it is concluded that in the photodissociation of CH3–Cl the optical excitation of the substrate to produce photoelectrons plays a dominant role.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.460084
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  • 4
    Electronic Resource
    Electronic Resource
    Nicotinic Acetylcholine Receptor Antagonistic Activity of Monoamine Uptake Blockers in Rat Hippocampal Slices (1999)
    Oxford UK : Blackwell Science Ltd
    Journal of neurochemistry 73 (1999), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract : The aim of our study was to investigate the effect of different monoamine uptake blockers on the nicotine-evoked release of [3H]noradrenaline ([3H]NA) from rat hippocampal slices. We found that desipramine (DMI), nisoxetine, cocaine, citalopram, and nomifensine inhibit the nicotine-evoked release of [3H]NA with an IC50 of 0.36, 0.59, 0.81, 0.93, and 1.84 μM, respectively. These IC50 values showed no correlation with the inhibitory effect (Ki) of monoamine uptake blockers on the neuronal NA transporter (r = 0.17, slope = 0.02), indicating that the NA uptake system is not involved in the process. In whole-cell patch clamp experiments neither drug blocked Na+ currents at 1 μM in sympathetic neurons from rat superior cervical ganglia, and only DMI produced a pronounced inhibition (52% decrease) at 10 μM. Comparison of the effect of DMI and tetrodotoxin (TTX) on the electrical stimulation- and nicotine-evoked release of [3H]NA showed that DMI, in contrast to TTX, inhibits only the nicotine-induced response, indicating that the target of DMI is not the Na+ channel. Our data suggest that monoamine uptake blockers with different chemical structure and selectivity are able to inhibit the nicotinic acetylcholine receptors in the CNS. Because these compounds are widely used in the therapy of depressed patients, our findings may have great importance in the evaluation of their clinical effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1471-4159.1999.0731043.x
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of illumination on the surface behavior of chloromethane on clean and potassium-dosed palladium (100) surfaces (1990)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 94 (1990), S. 2224-2226 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100369a003
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  • 6
    Electronic Resource
    Electronic Resource
    Adsorption and decomposition of formic acid on potassium-promoted rhodium(111) surfaces (1988)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 92 (1988), S. 796-803 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100314a041
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  • 7
    Electronic Resource
    Electronic Resource
    Deactivation of selected nobel metal catalysts during carbon monoxide oxidation: an in situ IR and kinetic study (1985)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 24 (1985), S. 216-219 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/i300018a008
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  • 8
    Electronic Resource
    Electronic Resource
    Target specificity of insertion element IS30 (1998)
    Oxford BSL : Blackwell Science Ltd, UK
    Molecular microbiology 28 (1998), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The Escherichia coli resident mobile element IS30 has pronounced target specificity. Upon transposition, the element frequently inserts exactly into the same position of a preferred target sequence. Insertion sites in phages, plasmids and in the genome of E. coli are characterized by an exceptionally long palindromic consensus sequence that provides strong specificity for IS30 insertions, despite a relatively high level of degeneracy. This 24-bp-long region alone determines the attractiveness of the target DNA and the exact position of IS30 insertion. The divergence of a target site from the consensus and the occurrence of ‘non-permitted’ bases in certain positions influence the target activity. Differences in attractiveness are emphasized if two targets are present in the same replicon, as was demonstrated by quantitative analysis. In a system of competitive targets, the oligonucleotide sequence representing the consensus of genomic IS30 insertion sites proved to be the most efficient target. Having compared the known insertion sites, we suppose that IS30-like target specificity, which may represent an alternative strategy in target selection among mobile elements, is characteristic of the insertion sequences IS3, IS6 and IS21, too.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2958.1998.00824.x
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  • 9
    Electronic Resource
    Electronic Resource
    Formation and transposition of the covalently closed IS30 circle: the relation between tandem dimers and monomeric circles (1999)
    Oxford BSL : Blackwell Science Ltd
    Molecular microbiology 34 (1999), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: In the present study, we demonstrate that a circular IS30 element acts as an intermediate for simple insertion. Covalently closed IS and Tn circles constructed in vitro are suitable for integration into the host genome. Minicircle integration displays all the characteristics of transpositional fusion mediated by the (IS30 )2 dimer regarding target selection and target duplication. Evidence is provided for in vivo circularization of the element located either on plasmids or on the genome. It is shown that circle formation can occur through alternative pathways. One of them is excision of IS30 from a hot spot via joining the IRs. This reaction resembles the site-specific dimerization that leads to (IS30 )2 establishment. The other process is the dissolution of (IS30 )2 dimer, when the element is excised from an IR–IR joint. These pathways differ basically in the fate of the donor replicon: only dimer dissolution gives rise to resealed donor backbone. Analysis of minicircles and the rearranged donor replicons led us to propose a molecular model that can account for differences between the circle-generating processes. Our focus was to the dissolution of IR–IR joints located on the host genome, because these events promoted extensive genomic rearrangements and accompanied minicircle formation. The results present the possibility of host genome reorganization by IS30-like transposition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2958.1999.01567.x
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  • 10
    Electronic Resource
    Electronic Resource
    Management of failed heller's operations (1996)
    Springer
    Surgery today 26 (1996), S. 541-545 
    Details
    ISSN: 1436-2813
    Keywords: esophagus ; achalasia ; surgery ; reoperation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An analysis of 29 patients who collectively required 33 reoperations for failed Heller's esophagocardiomyotomy performed during the period between 1972 and 1992 was conducted. In the majority of patients, the reoperation was necessitated because the original myotomy was not long or deep enough, or because of iatrogenic gastroesophageal reflux and its sequelae such as strictures. Identification of the exact cause of failure requires careful analysis of the patient's symptoms and of the findings of various diagnostic examinations. The treatment for inadequate myotomy generally involves performing a second myotomy, which is completed by adding a nonobstructive antireflux repair. It appears that abolition of the “sigmoid sac” is essential even when the esophagogastric junction has a sufficiently large diameter. A so-called esophagoplication was performed in 3 patients, and an interposition at the site of esophageal resection, using an isoperistaltic esophagojejunogastric loop of appropriate length, was performed in 14 patients. There were no deaths following reoperation. In fact, the results were excellent or good in 23 cases and fair in 3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00311564
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