Library

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
  • 1
    Electronic Resource
    Electronic Resource
    The ground state infrared spectra of four diatomic deuterides (GaD, InD, TlD, AgD) and the determination of mass-independent molecular parameters (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 2523-2528 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The infrared spectra of two isotopic forms of the monodeuterides of the metals gallium, indium, thallium, and silver have been measured in their ground electronic state (1Σ) in the gas phase using a diode laser spectrometer. The analysis of the experimental data was carried out in two ways: (a) a complete set of Dunham parameters was determined for each isotopic species independently and (b) all the available data over both deuterated and protonated species of a particular compound were simultaneously fitted to obtain a set of mass-independent parameters. Mass scaling coefficients, which take into account effects arising from a breakdown of the Born–Oppenheimer approximation, were determined for the hydrogen atom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.459877
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The ground state infrared spectra of several isotopic forms of the CdH and ZnH radicals (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 92 (1990), S. 14-21 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The infrared spectra of six isotopic forms of cadmium monohydride, [116CdH (7.6%), 114CdH (28.9%), 113CdH (12.3%), 112CdH (24.1%), 111CdH (12.7%), and 110CdH (12.4%)] and four isotopic forms of zinc hydride [68ZnH (18.6%), 67ZnH (4.1%), 66ZnH (27.8%), and 64ZnH (48.9%)] have been observed in natural abundance in their ground electronic state (2∑+) in the gas phase using a diode laser spectrometer. A number of transitions of 108CdH (0.9%) and 106CdH (1.2%) and 70ZnH (0.6%) were also observed, but too little data was accumulated to allow a good analysis. The hydrides were produced by reaction of hydrogen with metal vapor at elevated temperature in an electric discharge. The analysis of the experimental data was carried out in two ways. (a) A complete set of Dunham parameters and spin–rotation parameters (γ parameters) was determined for each isotopic species of the two radicals and (b) a set of mass-independent parameters were calculated for both ZnH and CdH. Since only information over the isotopic species of the heavy atom was produced in each case, effects arising from a breakdown of the Born–Oppenheimer approximation were negligible. The effects of the strong anharmonicity present in these two molecules on the values of the parameters are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.458484
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Diode laser spectroscopy of the four radicals, CdD, ZnD, BaD, and SrD, in their 2∑ ground state (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 5435-5442 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The infrared spectra of several isotopic forms of the monodeuterides of the metals cadmium, zinc, barium, and strontium have been measured in their ground electronic state (2∑) in the gas phase using a diode laser spectrometer. The analysis of the experimental data was carried out in two ways: (a) a complete set of Dunham parameters was determined for each isotopic species independently and (b) all the available data over both deuterated and protonated species of a particular compound were simultaneously fitted to obtain a set of mass-independent parameters. Mass scaling coefficients, which take into account effects such as a breakdown of the Born–Oppenheimer approximation, were determined for the hydrogen atom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.460504
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The molecular parameters of the antimony monodeuteride radical from diode laser spectroscopy (1993)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 99 (1993), S. 1591-1596 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Extensive measurements of the 3Σ ground state infrared spectrum of the antimony monodeuteride radical (SbD) have been carried out using a diode laser spectrometer. Transitions of the fundamental band of all three components of two isotopomers of SbD were measured with a nominal accuracy of ±0.001 cm−1. Only transitions of the O+ component of the v=1←2 hotband were intense enough to be observed. The entire data set was fitted as a single 3Σ state and accurate molecular parameters determined. The LMR data of Stackmann et al. [Mol. Phys. (in press)] on SbH provided invaluable aid with the assignment. Measurements were also carried out on two isotopomers of SbH in order to improve the molecular parameters available for these species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.465327
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Mechanism of Sympathoinhibition by Imidazolines (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 763 (1995), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1995.tb32449.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Cardiovascular effects of agmatine, a “clonidine-displacing substance”, in conscious rabbits (1995)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 351 (1995), S. 268-273 
    Details
    ISSN: 1432-1912
    Keywords: Key words Agmatine ; Yohimbine ; Clonidine-displacing substance ; α2-Adrenoceptors ; Imidazoline receptors ; Blood pressure ; Sympathetic nerve activity ; Cardiovascular regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Agmatine has been identified as a “clonidine-displacing substance” in extracts from bovine brain. We studied its effect on cardiovascular regulation and the role played in this effect by α2-adrenoceptors. In conscious rabbits, agmatine 10 μg kg-1 injected intracisternally (i.c.) caused no change, whereas agmatine 30, 100 and 300 μg kg-1 i.c. increased renal sympathetic nerve firing, the plasma concentration of noradrenaline and adrenaline and arterial blood pressure. Heart rate tended to be decreased. Yohimbine 1.5 μg kg-1 i.c. caused no change, whereas yohimbine 5, 15 and 50 μg kg-1 increased renal sympathetic nerve activity, the plasma concentration of noradrenaline and adrenaline, blood pressure and heart rate. In rabbit brain cortex slices preincubated with [3H]-noradrenaline, agmatine 1 to 100 μM did not modify the electrically evoked overflow of tritium (either 4 pulses at 100 Hz or 36 pulses at 3 Hz). The evoked overflow was reduced by 5-bromo-6-(2-imidazolin-2-ylamino)-quinoxaline (UK 14304) 0.03 to 30 nM (4 pulses at 100 Hz), and this inhibition was not affected by agmatine 10 and 100 μM. Agmatine did not change the basal efflux of tritium. The results show that agmatine, like yohimbine, causes central sympathoexcitation when given i.c., but agmatine differs from yohimbine in that it does not increase heart rate. Agmatine acts neither as an agonist nor as an antagonist at the α2-autoreceptors in rabbit brain cortex. α2-Adrenoceptors, therefore, are probably not involved in its cardiovascular effects. An action at imidazoline receptors in the medulla oblongata or some other hitherto unknown mechanism may be responsible for the sympathoexcitation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233246
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Cardiovascular effects of agmatine, a “clonidine-displacing substance”, in conscious rabbits (1995)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 351 (1995), S. 268-273 
    Details
    ISSN: 1432-1912
    Keywords: Agmatine ; Yohimbine ; Clonidine-displacing substance ; α2-Adrenoceptors Imidazoline receptors ; Blood pressure ; Sympathetic nerve activity ; Cardiovascular regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Agmatine has been identified as a “clonidine-displacing substance” in extracts from bovine brain. We studied its effect on cardiovascular regulation and the role played in this effect by α2-adrenoceptors. In conscious rabbits, agmatine 10 μg kg−1 injected intracisternally (i.e.) caused no change, whereas agmatine 30, 100 and 300 μg kg−1 i.e. increased renal sympathetic nerve firing, the plasma concentration of noradrenaline and adrenaline and arterial blood pressure. Heart rate tended to be decreased. Yohimbine 1.5 μg kg−1 i.e. caused no change, whereas yohimbine 5, 15 and 50 μg kg−1 increased renal sympathetic nerve activity, the plasma concentration of noradrenaline and adrenaline, blood pressure and heart rate. In rabbit brain cortex slices preincubated with [3H]-noradrenaline, agmatine 1 to 100 μM did not modify the electrically evoked overflow of tritium (either 4 pulses at 100 Hz or 36 pulses at 3 Hz). The evoked overflow was reduced by 5-bromo-6-(2-imidazolin-2-ylamino)quinoxaline (UK 14304) 0.03 to 30 nM (4 pulses at 100 Hz), and this inhibition was not affected by agmatine 10 and 100 μM. Agmatine did not change the basal efflux of tritium. The results show that agmatine, like yohimbine, causes central sympathoexcitation when given i.e., but agmatine differs from yohimbine in that it does not increase heart rate. Agmatine acts neither as an agonist nor as an antagonist at the α2-autoreceptors in rabbit brain cortex. α2-Adrenoceptors, therefore, are probably not involved in its cardiovascular effects. An action at imidazoline receptors in the medulla oblongata or some other hitherto unknown mechanism may be responsible for the sympathoexcitation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233246
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Sympathoinhibition by rilmenidine in conscious rabbits: involvement of α2-adrenoceptors (1993)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 348 (1993), S. 593-600 
    Details
    ISSN: 1432-1912
    Keywords: Imidazoline receptors ; α2 Adrenoceptors ; Rilmenidine ; Yohimbine ; Sympathetic nerve activity ; Blood pressure ; Plasma noradrenaline concentration ; Conscious rabbits
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cardiovascular and sympathetic nervous system effects of the mixed α2-adrenoceptor and imidazoline receptor agonist rilmenidine were studied in conscious rabbits chronically instrumented for the recording of the firing rate of renal sympathetic fibers. Separate experiments were carried out on pithed rabbits with electrically stimulated (2 Hz) sympathetic outflow. Drugs were administered intravenously in a cumulative manner. In conscious rabbits, rilmenidine 0.1, 0.3 and 1.0 mg kg−1 dose-dependently lowered blood pressure, renal sympathetic nerve activity, heart rate and the plasma concentration of noradrenaline and adrenaline. The effect on blood pressure and plasma catecholamines was maximal after 0.3 mg kg−1 whereas heart rate and renal sympathetic nerve activity decreased further after rilmenidine 1.0 mg kg−1. Yohimbine 0.1 and 0.5 mg kg−1, when injected subsequently, attenuated and at the higher dose abolished all effects of rilmenidine. The effects of rilmenidine were also antagonized by the α2-adrenoceptor antagonist 2-(2,3-dihydro-2-methoxy-1,4-benzodioxin-2-yl)-4,5-dihydro-1H-imidazole HCl (RX821002; 0.1 and 0.5 mg kg−1). Yohimbine 0.1 and 0.5 mg kg−1 did not attenuate or attenuated only slightly the decrease of heart rate and renal sympathetic nerve activity produced by infusion of vasopressin. In pithed rabbits with electrically-stimulated sympathetic outflow, yohimbine 0.1 submaximally and yohimbine 0.5 mg kg−1 maximally increased the plasma noradrenaline concentration. The experiments show by direct measurement of sympathetic nerve firing and plasma catecholamines that rilmenidine causes sympathoinhibition in conscious rabbits, presumably through central sites of action. The antagonism by yohimbine, at doses which are selective for α2-adrenoceptors (vs. imidazoline receptors), demonstrates the involvement of α2-adrenoceptors in the sympatho-inhibition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00167235
    Library Location Call Number Volume/Issue/Year 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...