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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 6244-6246 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The soft magnetic properties of the FeZrN ternary system were studied in association with excess nitrogen (N) in films. The proportion of excess N (EN) is defined (z−y)/[x+(z−y)]×100 for the film composition expressed FexZryNz. This is because the advent of soft magnetism, in this system, is assumed to be due to suppression of grain growth of α-Fe by ZrN precipitated in grain boundaries, thus causing a "nanocrystalline effect.'' This means that N exceeding the amount of Zr is considered "excess.'' This paper presents the influence of excess N on soft magnetic properties, and the following conclusion was obtained. Excess N first formed a supersaturated solid solution with Fe, and acted as the origin of induced magnetic anisotropy. Supersaturated N easily moved in Fe and the orientation of easy axis was reversibly changed by re-annealing at 150 °C in a magnetic field perpendicular to the easy axis. When N was in excess, some part of excess N formed Fe4N. Fe4N caused a dispersion of the microscopic anisotropy, and lowered the permeability of the macroscopic hard axis. Both supersaturated N and Fe4N increased magnetostriction constants.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 3402-3403 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin films of iodinated nickel phthalocyanine were made by double-source evaporation of nickel phthalocyanine and iodine in vacuum. They were obtained by keeping the substrate temperature at about −90 °C. The c axes of crystallites composing the film were almost perpendicular to the quartz glass substrate. The conductivities of the films were 0.1–1 S/cm at room temperature which decreased slightly as the measuring temperature was lowered to −170 °C.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 3423-3425 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: HgBa2Ca2Cu3Oy (Hg-1223) films with a thickness of 1–2 μm and Tc (zero)∼130 K have been fabricated by utilizing a spray pyrolysis technique. X-ray diffraction indicates that the films consist of predominantly Hg-1223 phase grains with c-axis orientation. Moreover, the oscillation photograph taken by a Weissenberg camera confirms that the film grains are in-plane aligned and epitaxially grown on SrTiO3. In electrical transport measurements, the as-fabricated film exhibits a Tc (zero) of 123 K, and a zero-field Jc of 3.7×105 A/cm2 at 77 K. Additional post-annealing at 320 °C for 50 h in flowing oxygen has improved the transport properties as Tc (zero)∼130 K and Jc∼4.4×105 A/cm2 (77 K, 0 T). © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 1401-1403 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A ZnSe/ZnSSe blue semiconductor laser was demonstrated to show very low threshold by direct photopumping of the ZnSe active layer. The lowest threshold at the excitation wavelength of 445 nm was 10 kW/cm2 at 300 K which is equivalent to the current density of 3.6 kA/cm2. This is the lowest threshold ever reported in II-VI photopumped lasers and is approaching the theoretically calculated threshold. The characteristic temperature of the threshold, which characterizes the temperature dependence of the threshold in the exponential form, was 124 K up to the measured 400 K and was comparable to III-V double-heterostructure lasers. The differential quantum efficiency remained the similar level up to 400 K and its decrease observed at 400 K was within 23% of the efficiency at 300 K.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 972-974 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: (Hg1−xRex)Ba2CaCu2Oy (x(approximate)0.1) thin films have been prepared ex situ on LaAlO3 substrates by a two-step process in which an HgO/Re0.1Ba2CaCu2Oy multilayer precursor film is annealed in a quartz tube using an unreacted monoxide pellet containing HgO as an Hg vapor source. By varying the composition of the monoxide pellet, the film orientation can be changed from c-axis to the predominantly a-axis one. The a-axis growth of the grains directly on the substrate is confirmed by x-ray diffraction and transmission electron microscopic observation, although the grains are twinned with 90° orientation. The a-axis films exhibit a Tc onset and Tc zero of approximately 110–127 and 55 K, respectively, suggesting substantial influence of weak links at the grain boundaries on their transport properties. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 29 (1996), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In bronchogenic squamous cell carcinoma, a growth pattern along the alveolar walls of the peripheral lung parenchyma is unusual. In order better to understand the way tumour cells invade the peripheral lung parenchyma, we studied two cases of squamous cell carcinoma with invasion along the alveolar walls (in 30% to 40% of the area surrounding the tumour). We used immunohistochemical staining with antibodies against pulmonary surfactant, apoproteins (PE-10) and collagen type IV, and electron microscopy. Tumour cells invading the peripheral lung tissue were located between one layer of type II alveolar epithelial cells and the basement membrane of the alveolar walls. These results suggest that the cells of a squamous carcinoma (unlike an adenocarcinoma) have the ability to spread along the basement membrane of the alveolar walls without destroying pre-existing normal peripheral lung parenchyma.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 30 (1995), S. 0 
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The co-aggregation characteristics between Fusobacterium nucleatum and streptococci were examined to clarify the adherence factors participating in the co-aggregation. Nineteen strains of F. nucleatum were classified into 8 groups according to co-aggregation titer and inhibition by L-arginine, L-lysine and N-acetyl-D-galactosamine (or lactose). The inhibition activity was, however, very different from strain to strain. With two fusobacterial strains, two inhibitors, which were both inhibition negative on their own, completely inhibited the co-aggregation when used together in a mixture. In some co-aggregation pairs, the protease treatment of F. nucleatum inactivated one of the adherence factors, and resulted in the change of inhibition characteristics. These results indicate the multimodal co-aggregation of F. nucleatum with streptococci mediated by L-arginine-sensitive, L-lysine-sensitive, N-acetyl-D-galactosamine-sensitive and some resistant factors, and that the adherence factor or factors participating in the co-aggregation change according to the co-aggregation partners.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 23 (1993), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: To determine whether histochemical reactivities of carcinoma-in-situ of the urinary bladder differ from those of invasive transitional cell carcinoma, we tested a profile of eight different lectins and three antibodies directed against blood group-related antigens for 15 cases of carcinoma-in-situ and 26 cases of non-papillary (6 superficially and 20 deeply) invasive transitional cell carcinoma that had been diagnosed according to the histopathological criteria of the International Union against Cancer. For biotin-labelled lectins and monoclonal antibodies to mouse blood group-related antigens, the avidin–biotin peroxidase complex method was applied. Positive histochemical reactions of peanut agglutinin without neuraminidase treatment—PNA N(–)—in the 20 deeply invasive tumour cases were significantly higher than those in the 15 carcinoma-in-situ cases (P〈0.05). In contrast, the reactions of blood group-related antigens in the 20 deeply invasive tumour cases were significantly lower than those in the 15 carcinoma-in-situ cases or the 11 normal controls (P〈0.05). The results confirm previously reported studies of the staining of PNA N(–) and blood group-related antigens on carcinoma-in-situ and invasive tumours of urothelial organs. The application of lectins and blood group-related antigens to the histopathology of urinary bladder cancer may be helpful in the differential diagnosis of carcinoma-in-situ from invasive cancer, but neither PNA N(–) nor blood group-related antigens can be solely reliable in this.
    Type of Medium: Electronic Resource
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