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  • 1
    ISSN: 1432-0568
    Keywords: Key words Ultrastructure ; Cricothyroid motoneurons ; Posterior cricoarytenoid motoneurons ; Synaptology ; HRP tracing study
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The cricothyroid (CT) and the posterior cricoarytenoid (PCA) muscles in the larynx are activated by the laryngeal motoneurons located within the nucleus ambiguus; these motoneurons receive the laryngeal sensory information from the nucleus tractus solitarii (NTS) during respiration and swallowing. We investigated whether the neurons in the NTS projected directly to the laryngeal motoneurons, and what is the synaptic organization of their nerve terminals on the laryngeal motoneurons using the electron microscope. When wheat germ agglutinin-conjugated horseradish peroxidase (WGA-HRP) was injected into the NTS after cholera toxin subunit B-conjugated HRP (CT-HRP) was injected into the CT muscle or the PCA muscle, the anterogradely WGA-HRP-labeled terminals from the NTS were found to directly contact the retrogradely CT-HRP-labeled dendrites and soma of both the CT and the PCA motoneurons. The labeled NTS terminals comprised about 4% of the axosomatic terminals in a section through the CT motoneurons, and about 9% on both the small (PCA-A) and the large (PCA-B) PCA motoneurons. The number of labeled axosomatic terminals containing round vesicles and making asymmetric synaptic contacts (Gray’s type I) was almost equal to that of the labeled terminals containing pleomorphic vesicles and making symmetric synaptic contacts (Gray’s type II) on the CT motoneurons. The labeled axosomatic terminals were mostly Gray’s type II on the PCA-A motoneurons, while the majority of them were Gray’s type I on the PCA-B motoneurons. These results indicate that the laryngeal CT and PCA motoneurons receive a few direct excitatory and inhibitory inputs from the neurons in the NTS.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We performed a pilot study to evaluate the factors associated with response to interferon (IFN) therapy for chronic hepatitis C (CHC) with human immunodeficiency virus (HIV) coinfected haemophiliacs. Seven haemophiliacs, coinfected with HIV and hepatitis C virus (HCV), received 9 mega-units (MU) of natural IFN-alpha daily during the first 2 weeks and then three times a week for 22 weeks, all injected subcutaneously. Six patients were receiving zidovudine (AZT) 600 mg day−1 and didanosine (ddI) 200 mg day−1 during IFN therapy. This treatment was safe and well tolerated. Four patients had no detectable serum HCV-RNA at the end of therapy, but long-term, none of the seven patients achieved a sustained response, i.e. undetectable serum HCV-RNA with persistently normal serum alanine aminotransferase (ALT) 6 months after therapy. IFN did not affect CD4-positive cell counts. Most of our patients had high HCV-RNA loads and/or low CD4 counts, both unfavourable markers for IFN therapy. In conclusion, IFN therapy did not eradicate HCV from haemophiliacs coinfected with HIV.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We observed massive bleeding from a gastric erosion following transcatheter arterial chemoembolization (TAE) in a patient with mild haemophilia A. A 78-year-old haemophiliac (factor VIII level over 60%) received TAE with farmorubicin and spongel. Haematemesis and melena with loss of consciousness occurred 9 days after TAE, and endoscopy revealed superficial erosions with oozing. Toxic effects of the anticancer drug in conjunction with the bleeding disorder may have caused the massive bleeding. We should always consider the possibility of unexpected complications in patients with bleeding disorders; gastrointestinal bleeding can develop during treatment for liver tumours.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 31 (2004), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary  The aim of the present study was to study the mineral formation on a phosphorylated dental bonding agent using a mineralization inductive solution. Clearfil Photobond, which contained phosphate monomer, was cured by photo-irradiation and heat treated, and was then immersed in Hanks’ balanced salt solution (HBSS) with pH = 7·4 for 1, 3, 5, 7, 14, and 28 days at 37 °C. The white substances were deposited on the phosphorylated polymer, i.e. cured Photobond disk, after the immersion in HBSS. The white substances become visible after 3 days immersion. After 7 days immersion, surface of the phosphorylated polymer disk was almost covered with white substance layers. The measurement of white substances by means of X-ray diffraction, Fourier-transform infrared and electron probe microanalysis revealed that their main component was carbonate-containing hydroxyapatite. Scanning electron microscopy pictures showed that a large number of globules of hydroxyapatite were fused together, and that each globule was composed of a group of numerous thin-film form flakes uniting and/or clustering together. The results obtained in this study concluded that the presence of phosphonic acid and phosphate group of phosphorylated dental bonding agent enhanced the nucleation and growth of hydroxyapatite crystals on its surface.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 47-50 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: For Coulomb excitation experiments using a γ-ray detector array, a position-sensitive particle detector system that has a good angular resolution, capability of managing a high-counting rate, robustness for a radiation damage, compactness (under 110 mm φ) and easiness of handling is necessary. For this purpose we developed a new device utilizing plastic and yttrium aluminum perovskite activated by cerium (formula YAlO3:Ce abbreviated YAP Ce) scintillators and a position-sensitive photomultiplier tube. The detector system could operate at a high-counting rate (about 105), and with a good position resolution of 0.5–1.2 mm, which was enough for Doppler correction of the γ rays. It could sustain the radiation damage caused by Coulomb excitation experiments with heavy ions for more than 50 days. The detector chamber was well fitted in the 110 mm φ diameter of the internal space of a compact γ-ray detector array, GEMINI. This was much easier to handle than the position-sensitive gas counter. In Coulomb excitation experiment utilizing this device, the nucleus 74Ge has been Coulomb excited using a Pb target. The transitional E2 matrix elements have been determined and the device has turned out to be useful in Coulomb excitation experiments with heavy-ion beams. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. A Coulomb excitation experiment was carried out with a 66Zn beam bombarding a ${}^{\rm nat}$ Pb target. Four E2 matrix elements and the quadrupole moment of the 21 + state were derived with the least-squares search code GOSIA. According to the B(E2) values, the ground band can be interpreted as a quasirotational band. It was found that the 21 + level has a positive quadrupole moment, which may be interpreted as a soft triaxial deformation.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1434-601X
    Keywords: PACS. 21.10.Re Collective levels – 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ?A? 189
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: High spin states in 178Ir have been studied via the 152Sm(31P, 5nγ)178Ir reaction through excitation functions, X-γ and γ-γ-t coincidence measurements. According to the band structure characteristics and the measured intraband B(M1)/B(E2) ratios, two rotational bands are identified and assigned to be associated with the πh 9/2⊗νi 13/2 and πh 11/2⊗νi 13/2 configurations, respectively. Both bands show the signature inversion feature.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1434-601X
    Keywords: PACS. 23.20.Lv Gamma transition and level energy – 27.70.+q 150 ≤A≤ 189
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The in-beam spectroscopy on N = 91 isotones has been carried out using the 12C + 150Nd reaction. The νi 13/2 and νh 11/2 bands of 153Sm have been extended up to 33/2+ and 31/2-, respectively. Two new γ-rays have been located on the top of the unfavored band with νi 13/2 configuration in 157Dy. Two identical relationships have been established in the low-spin region of the yrast νi 13/2 configuration between 153Sm and 155Gd, and between unfavored bands of 155Gd and 157Dy. Here all these nuclei have the same neutron number N = 91.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1434-601X
    Keywords: PACS. 21.10.Tg Lifetimes – 21.60.Fw Models based on group theory – 23.20.Lv Gamma transitions and level energies – 27.60.+j 90≤A≤149
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Lifetimes of excited states in 120Xe have been measured by the Doppler-shift attenuation method in the 111Cd( 12C,3n) reaction at a beam energy of E = 56 MeV. Lifetime values for 22 states were obtained. The excitation energies and E2-transition probabilities of the yrast band, γ-band and its continuation are interpreted in the framework of a version of IBFM (IBM + 2 q.p.). A reasonable description of the B(E2) behavior in the backbending region is achieved.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 9 (2000), S. 353-356 
    ISSN: 1434-601X
    Keywords: PACS. 25.70.De Coulomb excitation – 21.10.Ky Electromagnetic moments – 23.20.-g Electromagnetic transitions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: 74Ge beam was Coulomb-excited on a natPb target. Ten E2 matrix elements including diagonal matrix elements for 5 low-lying states have been determined using the least-squares search code GOSIA. The expectation values of the rotational invariants 〈Q 2〉 and 〈cos3δ〉 show the small and triaxial deformation of the two lowest members of the ground-state band , while the 02 + and 22 + states are found to be almost spherical.
    Type of Medium: Electronic Resource
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