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  • 1
    Digitale Medien
    Digitale Medien
    Preparation of polycrystalline Bi3Fe5O12 garnet films : 35th Annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 4580-4582 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Polycrystalline films of nonthermodynamical garnet Bi3Fe5O12 were synthesized by direct epitaxial growth from the vapor phase. Polycrystalline thin layers of various kinds of thermodynamical garnets prepared on fused quartz substrates were employed as the substrate materials. The saturation magnetization of the film grown onto the polycrystalline GGG layer was 140 mT at 5 K. The films showed quite large magneto-optical effects. In the film on the GGG layer, the Faraday rotation angle at a wavelength of 633 nm was −5.5 deg/μm and the magneto-optical Kerr rotation angle at 455 nm was −0.9°.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.348316
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  • 2
    Digitale Medien
    Digitale Medien
    Magnetic properties of Bi3Fe5O12 garnet (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 4944-4946 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Nonthermodynamical garnet Bi3Fe5O12 was synthesized by direct epitaxial growth via vapor phase using a reactive ion beam sputtering technique. The lattice constant was 12.631 A(ring). The saturation magnetization of the film grown onto a substrate (a=12.495 A(ring)) was 1500 G at room temperature. The uniaxial anisotropy energy was +7.2×104 erg/cm3. The conversion electron Mössbauer spectroscopy measurement indicates that the internal fields of 24d and 16a sites in the nearly lattice-matched film were 420 and 490 kOe, respectively. The internal field of the 24d site was larger by 30 kOe than that in YIG. The angle between the direction of the internal field and the film normal was 34.8°.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.344740
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  • 3
    Digitale Medien
    Digitale Medien
    Chemical shift imaging by spin-echo modified Fourier method (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 2174-2181 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: A method for measuring spatially resolved high-resolution nuclear magnetic resonance spectra for a spatially heterogeneous complex object has been examined by making images of several phantoms. The factors which determine the image quality are discussed from both theoretical and experimental viewpoints. Especially, the effects of field inhomogeneity, originating from magnet inhomogeneity and nonuniform magnetic susceptibility of the object itself, are examined in detail. The indirect spin-spin coupling effect on imaging results is theoretically discussed. Although mathematical treatments are given for three-dimensional objects, actual measurements were performed for spatially limited two-dimensional regions by slicing the three-dimensional objects using a selective excitation technique. The results show that the present method is feasible for practical chemical shift imaging purposes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.334358
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  • 4
    Digitale Medien
    Digitale Medien
    Improvement in optical and magnetic properties of Bi-substituted garnet sputtered films for magneto-optical recording (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3642-3644 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We have investigated the effect on the optical and magnetic properties of adding W or Co to Bi-substituted garnet films sputtered on glass substrates. Adding a small amount (〈1.2 at. %) of W makes the film optically homogeneous. It also increases coercivity more than three times, probably due to wall pinning by W atoms. Adding Co reduces coercivity. On the thin film with added W, we have successfully performed a dynamic thermomagnetic writing with a regular bit shape. This promotes development of magneto-optical memory using garnet sputtered film.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.340669
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  • 5
    Digitale Medien
    Digitale Medien
    Comparison of ranitidine and lansoprazole in short-term low-dose triple therapy for Helicobacter pylori infection (1997)
    Oxford UK : Blackwell Science Ltd.
    Alimentary pharmacology & therapeutics 11 (1997), S. 0 
    Details
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: To evaluate the efficacy and safety of two 1-week low-dose triple-therapy drug regimens involving antisecretory drugs for Helicobacter pylori infection, 99␣patients with H. pylori infection were treated with either lansoprazole or ranitidine used together with clarithromycin and metronidazole.〈section xml:id="abs1-2"〉〈title type="main"〉Methods:The drug combination and administration periods in the proton pump inhibitor group were lansoprazole 30 mg o.m., clarithromycin 200 mg b.d. and metronidazole 250 mg b.d., all given for 7 days (LCM group). The ranitidine group received ranitidine 150 mg b.d., clarithromycin 200 mg b.d. and metronidazole 250 mg b.d. also for 7 days (RCM group). The presence or absence of H. pylori was determined from gastric biopsy specimens taken from both the antrum and the body, by smear, culture and tissue section (Giemsa stain). Cure was defined as failure to find evidence of H. pylori infection 4 weeks after antimicrobial therapy had ended.〈section xml:id="abs1-3"〉〈title type="main"〉Results:The cure of H. pylori infection was 88% in the LCM group (44 of 50; 95% confidence interval (CI) = 79–97%) and 92% in the RCM group (45 of 49; 95% CI = 84–99%). The incidence of adverse events was 16% and 18% for the two groups, respectively.〈section xml:id="abs1-4"〉〈title type="main"〉Conclusions:No significant differences in cure rate and safety profiles were noted between the two regimens, suggesting that moderate acid inhibition using an H2-blocker is sufficient to achieve optimal H. pylori eradication.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2036.1997.00186.x
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  • 6
    Digitale Medien
    Digitale Medien
    The Control by State Transitions of the Distribution of Excitation Energy in Photosynthesis (1986)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology 37 (1986), S. 335-361 
    Details
    ISSN: 0066-4294
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.pp.37.060186.002003
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  • 7
    Digitale Medien
    Digitale Medien
    ASSESSMENT OF THE CORONARY VASODILATOR ACTION OF SK&F 24260 IN THE DOG (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 5 (1978), S. 0 
    Details
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1. The effects of SK&F 24260 administered intravenously or intraduodenally on the coronary sinus outflow, coronary arteriovenous oxygen difference (A-V O2), myocardial oxygen consumption (MVO2), systemic blood pressure, heart rate and atrioventricular (AV) conduction time were examined in open-chest dogs.2. SK&F 24260 in doses of 0.3–10 μg/kg, i.v., caused a dose-dependent increase in coronary sinus outflow, but the increase was smaller with 30 μg/kg, i.v., than with 10μg/kg, i.v.3. SK&F 24260 (0.3–30μg/kg, i.v.) decreased A-V O2 and MVO2 in a dose-dependent manner.4. SK& F 24260 (0.3–30μg/kg, i.v.) decreased systemic blood pressure and heart rate, and increased AV conduction time.5. Intraduodenal administration of SK&F 24260 (1 mg/kg) produced almost the same effects on coronary sinus outflow, A-V O2, MVO2, systemic blood pressure, heart rate and AV conduction time as did the intravenous administration of the compound (10μg/kg).6. The property of SK&F 24260 to increase the coronary blood flow and to moderately decrease MVO2, systemic blood pressure and heart rate indicates that this agent is a potential antianginal drug.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1440-1681.1978.tb00660.x
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  • 8
    Digitale Medien
    Digitale Medien
    PHARMACOLOGICAL PROFILE OF A NEW CORONARY VASODILATOR DRUG, 2-NICOTINAMIDOETHYL NITRATE (SG-75) (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 6 (1979), S. 0 
    Details
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1. In anaesthetized, open-chest dogs, 2-nicotinamidoethyl nitrate (SG-75) administered intravenously (0.3–1 mg/kg) or intraduodenally (3 mg/kg) produced decreases in systemic blood pressure, coronary resistance, heart rate and an increase in coronary sinus outflow, but virtually no change in myocardial oxygen consumption and atrioventricular conduction. The effects of SG-75 administered intraduodenally emerged within a few minutes after dosing and lasted over about 1 h.2. In isolated, blood-perfused sino-atrial node preparations of the dog SG-75 administered into the sinus node artery decreased slightly sinus rate at the dose which doubled blood flow through the artery.3. In isolated, blood-perfused atrioventricular node preparations of the dog SG-75 administered into the atrioventricular node artery did not impair atrioventricular conduction even in doses which increased blood flow through the artery to more than twice the basal level.4. In isolated, blood-perfused papillary muscle preparations of the dog SG-75 administered into the anterior septal artery scarcely affected force of contraction of the papillary muscle at the dose which doubled blood flow through the artery, although in further large doses it produced a transient decrease in the force of contraction. In extremely large doses it produced ventricular fibrillation.5. In anaesthetized, open-chest dogs in which cardiac input was kept constant SG-75 (0.01–1 mg/kg) administered into the ascending aorta increased venous return without changing systemic output.6. 2-Nicotinamidoethyl alcohol, a denitrated compound of SG-75, had no vasodilator action in doses comparable to those of the parent compound.7. These results indicate SG-75 to be a potential antianginal drug having no cardiodepressant actions but having properties uncharacteristic of the nitrates.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1440-1681.1979.tb01252.x
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  • 9
    Digitale Medien
    Digitale Medien
    ENDOTHELIUM-DEPENDENT RELAXATION IS UNALTERED BY HYPERTENSION, CHOLESTEROL OR INTIMAL THICKENING (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 13 (1986), S. 0 
    Details
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1. The effect of cellophane wrap hypertension (WRAP) and hypercholesterolemia (1% cholesterol diet, CHOL) for 4 weeks was assessed on the endothelium-dependent vasodilator response to acetylcholine in conscious rabbits after pharmacological autonomic blockade.2. Dose-response curves for the hindlimb vascular resistance (ear artery pressure/lower aortic blood flow; Doppler flowmeter) and acetylcholine infusion (i.v.) doses were unaltered in sensitivity (ED50) for any of the treatment groups. The range and slope of the curves were significantly altered by WRAP, CHOL or WRAP plus CHOL for acetylcholine and adenosine infusions consistent with medial hypertrophy in resistance vessels and raised serum viscosity.3. The effect of intimai thickening on the response to endothelium derived relaxing factor (EDRF) was tested in dog carotid artery ring segments in vitro 4 weeks after endothelium removal.4. The relaxation responses to acetylcholine (EDRF-dependent) and adenosine or nitroglycerin were not significantly altered by the neo-intima.5. Therefore the response to EDRF released by acetylcholine in resistance vessels was unaltered by hypertension, hypercholesterolemia or both together. Neo-intimal thickening in response to initial endothelium loss does not appear to alter EDRF responses in the carotid artery.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1440-1681.1986.tb00350.x
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  • 10
    Digitale Medien
    Digitale Medien
    MECHANISMS UNDERLYING THE CARDIOVASCULAR ACTION OF A NEW DIHYDROPYRIDINE VASODILATOR, YC-93 (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 7 (1980), S. 0 
    Details
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1.The mechanisms underlying the cardiovascular action of YC-93, a new dihydropyridine vasodilator with cyclic AMP phosphodiesterase inhibitory activity, was investigated by comparing its effects wth those of papaverine in various isolated, blood-perfused heart preparations of the dog.2. In all preparations YC-93 injected into the nutrient arteries produced a dose-dependent increase in blood flow, and in this respect YC-93 was about twenty times more potent than papaverine on a weight basis.3. In sinoatrial node preparations YC-93 injected into the sinus node artery decreased sinus rate in a dose-dependent manner, and in large doses produced atrial standstill.4. In atrioventricular (a.v.) node preparations YC-93 injected into the a.v. node artery increased a.v. conduction time in a dose-dependent manner, and in large doses produced a second or third degree block of a.v. conduction. However YC-93 injected into the anterior septal artery scarcely affected a.v. conduction.5. In spontaneously contracting papillary muscle preparations YC-93 injected into the anterior septal artery failed to affect ventricular automaticity in doses which markedly decreased developed tension of papillary muscles.6. In papillary muscle preparations driven at a fixed rate YC-93 injected into the anterior septal artery produced a dose-dependent decrease in developed tension of papillary muscles.7. Unlike YC-93, papaverine decreased a.v. conduction time in a.v. node preparations and increased developed tension of papillary muscle preparations.8. The cardiac effects of YC-93 elucidated in the present experiments are characteristic of calcium-antagonistic vasodilators. The action of YC-93 as an inhibitor of cyclic AMP phosphodiesterase does not appear to play a role in its cardiac action.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1440-1681.1980.tb00069.x
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