GLORIA

GEOMAR Library Ocean Research Information Access

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
    Definitive ab initio structure for the X˜ 2A′H2PO radical and resolution of the P–O stretching mode assignment (1998)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 109 (1998), S. 2694-2699 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Previous ab initio studies of the X˜ 2A′H2PO radical have reported dramatically differing P–O bond distances when using spin-restricted wave functions predicting two artifactual isomers of H2PO: a singly bonded oxygen-centered radical and a doubly bonded phosphorus-centered radical. We show that large basis sets coupled with high levels of dynamical electron correlation are required to correctly describe the P–O bond in H2PO as well as the unpaired electron density as evidenced by the Fermi contact terms and anisotropic components of the 31P, 1H, and 17O hyperfine splitting (hfs) constants. The optimized geometry, harmonic vibrational frequencies, and hfs constants of H2PO were determined at several coupled-cluster levels of theory using both spin-restricted (ROHF) and spin-unrestricted (UHF) Hartree–Fock reference wave functions. The geometrical parameters at the coupled-cluster level with single, double, and perturbatively applied triple substitutions [CCSD(T)] using Dunning's correlation consistent polarized valence quadruple-ζ basis set (cc-pVQZ) are r(P–O)=1.492 Å; r(P–H)=1.410 Å; (angle)(HPH)=102.63°; (angle)(HPO)=114.92°. These are in excellent agreement with those derived from recent gas phase microwave data, with the surprising exception of the P–H distance which deviates 0.02 Å from experiment. The value of the P–O harmonic stretching frequency at the CCSD(T) level within the cc-pVQZ basis set is 1190 cm−1, in good agreement with the experimental fundamental frequency of 1147 cm−1 obtained by Withnall and Andrews and in constrast to previous speculation that this experimental band may have been misassigned. Hyperfine splitting constants determined at the TZ2P(f,d)/UHF-CCSD(T) level are in very good agreement with experimental values with an average deviation of 23 MHz. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.476869
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Spectroscopic Properties and Packing of Langmuir-Blodgett Monolayers of Perylenetetracarboxylic Anhydrides (1995)
    s.l. : American Chemical Society
    Langmuir 11 (1995), S. 1693-1700 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00005a044
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Hydrodynamic stability of flow between rotating porous cylinders with radial and axial flow (1997)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 9 (1997), S. 3687-3696 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A linear stability analysis was carried out for axial flow between a rotating porous inner cylinder and a concentric, stationary, porous outer cylinder when radial flow is present for several radius ratios. The radial Reynolds number, based on the radial velocity at the inner cylinder and the inner radius, was varied from −15 to 15, and the axial Reynolds number based on the mean axial velocity and the annular gap was varied from 0 to 10. Linear stability analysis for axisymmetric perturbations results in an eigenvalue problem that was solved using a numerical technique based on the Runge–Kutta method combined with a shooting procedure. At a given radius ratio, the critical Taylor number at which Taylor vortices first appear for radial outflow decreases slightly for small positive radial Reynolds numbers and then increases as the radial Reynolds number becomes more positive. For radial inflow, the critical Taylor number increases as the radial Reynolds number becomes more negative. For a given radial Reynolds number, increasing the axial Reynolds number increases the critical Taylor number for transition very slightly. The critical wave velocity decreases slightly for small positive radial Reynolds numbers, but increases for larger positive and all negative radial Reynolds numbers. The perturbed velocities are very similar to those for no axial flow. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.869506
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The Effect of Inducing Ventricular Fibrillation with 50-Hz Pacing Versus T are Stimulation on the Ability to Defibrillate (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Pacing and clinical electrophysiology 21 (1998), S. 0 
    Details
    ISSN: 1540-8159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: When testing an ICD, there are at least two techniques for inducing ventricular fibrillation: (1) high frequency (∼ 50 Hz) pacing; and (2) a single T wave stimulus. It is generally assumed that these two methods yield similar results. This study directly tested this assumption. In six dogs, one defibrillation electrode was placed in the right ventricular (RV) apex and the second was placed cutaneously on the left thorax. All defibrillation and T wave stimuli were biphasic between these two electrodes. Pacing was monophasic from the tip of the RV catheter to the cutaneous patch. The voltage which defibrillates 50% of the time (DF50) was measured using a 10-step Bayesian up-down method. Observations for two DF50 measurements were randomly interleaved. For one DF50 measurement, fibrillation was induced with 99 pacing stimuli at a 20-ms pacing interval (50-Hz pacing). For the second DF50 measurement, fibrillation was induced with a single defibrillation shock of approximately ½ J delivered at a time corresponding to the peak of the T wave in the lead II electrogram (T wave stimuli). The average DF50 when measured after fibrillation induced with 50-Hz pacing was 379 ± 54.6 V, as compared to 382 ± 50.3 V when fibrillation was induced with T wave stimuli. The difference of 3 V was not statistically significant. If these results are confirmed in humans, it is reasonable to assume that the efficacy of a defibrillation shock is the same whether T wave stimuli or 50-Hz pacing are used to induce fibrillation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8159.1998.tb00155.x
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    The Peroxisome Proliferator-Activated Receptor: Transcriptional Activation of the CYP4A6 Gene (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 804 (1996), 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.1749-6632.1996.tb18629.x
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Surface-Enhanced Infrared Spectroscopy of Monolayers (1995)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 9325-9330 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100023a004
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Subtypes of Incarcerated Delinquents Constructed via Cluster Analysis (1996)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of child psychology and psychiatry 37 (1996), S. 0 
    Details
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: The MMPI and Jesness Inventory were used to construct groupings of juvenile delinquents homogeneous with respect to personality characteristics. Subjects were 191 incarcerated juvenile delinquents, aged 12 to 19. All participants had been adjudicated on one or more serious offenses. Five subtypes of delinquents were identified. They included an alienated, unsocialized group, an insecure-anxious group, a group reporting limited difficulties with peers hut alienated from adults, a group with no apparent emotional disturbance, and a group with multiple elevations. Significant differences between clusters with regard to self-reported explosiveness. suicidality, gang activities, substance abuse. history of sexual abuse, and delusions and hallucinations were identified. Discriminant function analysis was then used to support the generalizability of the classification system to an independent sample. Eighty per cent of the second sample were accurately classified. The subtypes identified are compared to delinquent classification systems developed previously.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-7610.1996.tb01406.x
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    CLOSTRIDIAL TOXINS AS THERAPEUTIC AGENTS: Benefits of Nature's Most Toxic Proteins (1999)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 53 (1999), S. 551-575 
    Details
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract Toxins are increasingly being used as valuable tools for analysis of cellular physiology, and some are used medicinally for treatment of human diseases. In particular, botulinum toxin, the most poisonous biological substance known, is used for treatment of a myriad of human neuromuscular disorders characterized by involuntary muscle contractions. Since approval of type-A botulinum toxin by the US Food and Drug Administration in December 1989 for three disorders (strabismus, blepharospasm, and hemifacial spasm), the number of indications being treated has increased greatly to include numerous focal dystonias, spasticity, tremors, cosmetic applications, migraine and tension headaches, and other maladies. Many of these diseases were previously refractory to pharmacological and surgical treatments. The remarkable therapeutic utility of botulinum toxin lies in its ability to specifically and potently inhibit involuntary muscle activity for an extended duration. The clostridia produce more protein toxins than any other bacterial genus and are a rich reservoir of toxins for research and medicinal uses. Research is underway to use clostridial toxins or toxin domains for drug delivery, prevention of food poisoning, and the treatment of cancer and other diseases. The remarkable success of botulinum toxin as a therapeutic agent has created a new field of investigation in microbiology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.micro.53.1.551
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    The latent dimensionality of DIS/DSM-III-R nicotine dependence: exploratory analyses (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Addiction 91 (1996), S. 0 
    Details
    ISSN: 1360-0443
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Decisions on DSM-IV criteria for alcohol dependence were based in part on latent structure analyses of field survey data on alcohol problems. Analogously, to investigate the latent structure of nicotine dependence in an epidemiological sample, we carried out a dichotomous item factor analysis of DSM-III-R symptom data gathered from 394 young adults who reported a history of sustained daily smoking. Smokers and their dependence symptoms were identified by means of the NIMH Diagnostic Interview Schedule version III revised, administered to a random sample of 1007 21–30-year-olds who were members of a health maintenance organization in the Detroit area. Comparing different latent structure models using LISCOMP software with bootstrap re-sampling, followed by multiple logistic regression, vie found that a two-factor model indicating a ‘general dependence’ and a ‘failed cessation’ dimension best accounted for the observed data. Current smoking status (persistent vs. past smoking) was associated with the two factors independently. Replication and additional research on construct, discriminant and convergent validity are needed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1360-0443.1996.91458312.x
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Febrile seizures and generalized epilepsy associated with a mutation in the Na + -channel ß1 subunit gene SCN1B (1998)
    [s.l.] : Nature America Inc.
    Nature genetics 19 (1998), S. 366-370 
    Details
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Febrile seizures affect approximately 3% of all children under six years of age and are by far the most common seizure disorder. A small proportion of children with febrile seizures later develop ongoing epilepsy with afebrile seizures. Segregation analysis suggests the majority of cases have ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1252
    Location Call Number Limitation 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...