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  • 1
    Electronic Resource
    Electronic Resource
    Hard magnetic properties in melt-spun Co82−xFexZr18 alloys : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 5932-5934 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Co82−xFexZr18 (0≤x≤16) alloys melt-spun with vs=40-47 m/s exhibit a single phase for all x. The Curie temperature Tc and the room-temperature saturation magnetization σs increase monotonically with increasing Fe concentration x. The anisotropy field for x=0 is found to be about 3.13T. In the as-quenched samples at the optimal quenching rate, room-temperature coercive field Hc decreases almost linearly from 3.0 kOe for x=0 to 1.3 kOe for x=16. The maximum energy product (BH)max increases at first with increasing Fe concentration x, and goes through a maximum value of 4.2 MGOe at about x=5, then decreases with x.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353525
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic properties and crystallization of amorphous Fe-Nd-B alloys at constant Nd concentration : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 6312-6314 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The B-content dependence of magnetization, Curie temperature, and crystallization temperature for amorphous (Fe1−xBx)100−yNdy alloys with y=4, 7, and 12 were studied. Spontaneous magnetization shows a monotonic decrease with x, and the noncollinear spin structures have been proposed to explain the observed results. It is found that the Curie temperature of the samples increases at first with increasing B concentration x, and shows a maximum value at a certain B concentration, then decreases monotonically with x. The composition dependence of Tc is explained by the average molecular-field model. An exceptionally strong rise of crystallization temperature with x is found, and demonstrates that the thermal stability of amorphous Fe-Nd-B alloys has a remarkable enhancement by the substitution of B for Fe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355383
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetic and magnetorestrictive properties of Sm1−xDyxFe2 compounds and its Mössbauer effect studies (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 7429-7432 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Measurements of x-ray diffraction, magnetization, magnetostriction, and Mössbauer effect were performed on a series of Sm1−xDyxFe2 samples (x=0, 0.1, 0.15, 0.25, 0.45, and 0.65). It is shown that the system retains the cubic MgCu2 structure over the whole range and the lattice constant decreases linearly with increasing x. Results of Mössbauer effect study at room temperature show that for a small amount of Dy substitution for Sm, x〈0.15, easy axes of the magnetization keep in the [111] direction. For x(approximately-greater-than)0.15, the direction of easy axes rotates gradually from [111] for x=0, and 0.1 to [100] for x=0.45 and 0.65. The concentration dependence of the saturation magnetization exhibits a minimum at x=0.30 for 1.5 K and at x=0.45 for room temperature, reflecting the occurrence of the compensation of magnetic moments at various Sm/Dy ratios. For x=0.45 and 0.65, the pinning phenomenon of narrow domain walls was observed at low temperature. The magnetostriction was found to decrease with the increase in the Dy content, as a result of the compensation of λ111 in Sm1−xDyxFe2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356636
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  • 4
    Electronic Resource
    Electronic Resource
    C-Reactive Proteins, Limunectin, Lipopolysaccharide-Binding Protein, and Coagulin (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 712 (1994), 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.1749-6632.1994.tb33569.x
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  • 5
    Electronic Resource
    Electronic Resource
    Induction of specific transplantation tolerance across xenogeneic barriers in the T-independent immune compartment (1998)
    [s.l.] : Nature Publishing Group
    Nature medicine 4 (1998), S. 173-180 
    Details
    ISSN: 1546-170X
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] After transplantation of primarily vascularized xenografts (Xgs), T-independent mechanisms may lead to Xg rejection before T-cell activation even takes place. The possibility of achieving T-independent xenotolerance was evaluated in nude rats that normally reject hamster cardiac Xgs within 4 days ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nm0298-173
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  • 6
    Electronic Resource
    Electronic Resource
    Theory and design of two-dimensional filter Banks: A review (1996)
    Springer
    Multidimensional systems and signal processing 7 (1996), S. 263-330 
    Details
    ISSN: 1573-0824
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract There has been considerable interest in the design of multidimensional (MD) filter banks. MD filter banks find application in subband coding of images and video data. MD filter banks can be designed by cascading one-dimensional (1D) filter banks in the form of a tree structure. In this case, the individual analysis and synthesis filters are separable and the filter bank is called a separable filter bank. MD filter banks with nonseparable filters offer more flexibility and usually provide better performance. Nonetheless, their design is considerably more difficult than separable filter banks. The purpose of this paper is to provide an overview of developments in this field on the design techniques for MD filter banks, mostly two-dimensional (2D) filter banks. In some image coding applications, the 2D two-channel filter banks are of great importance, particularly the filter bank with diamond-shaped filters. We will present several design techniques for the 2D two-channel nonseparable filter banks. As the design of MD filters are not as tractable as that of 1D filters, we seek design techniques that do not involve direct optimization of MD filters. To facilitate this, transformations that turn a separable MD filter bank into a nonseparable one are developed. Also, transformations of 1D filter banks to MD filter banks are investigated. We will review some designs of MD filter banks using transformations. In the context of 1D filter bank design, the cosine modulated filter bank (CMFB) is well-known for its design and implementation efficiency. All the analysis filters are cosine modulated versions of a prototype filter. The design cost of the filter bank is equivalent to that of the prototype and the implementation complexity is comparable to that of the prototype plus a low-complexity matrix. The success with 1D CMFB motivate the generalization to the 2D case. We will construct the 2D CMFB by following a very close analogy of 1D case. It is well-known that the 1D lossless systems can be characterized by state space description. In 1D, the connection between the losslessness of a transfer matrix and the unitariness of the realization matrix is well-established. We will present the developments on the study of 2D lossless systems. As in 1D case, the 2D FIR lossless systems can be characterized in terms of state space realizations. We will review this, and then address the factorizability of 2D FIR lossless systems by using the properties of state space realizations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01826246
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  • 7
    Electronic Resource
    Electronic Resource
    Targeted disruption of cd39 /ATP diphosphohydrolase results in disordered hemostasis and thromboregulation (1999)
    [s.l.] : Nature America Inc.
    Nature medicine 5 (1999), S. 1010-1017 
    Details
    ISSN: 1546-170X
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] CD39, or vascular adenosine triphosphate diphosphohydrolase, has been considered an important inhibitor of platelet activation. Unexpectedly, cd39-deficient mice had prolonged bleeding times with minimally perturbed coagulation parameters. Platelet interactions with injured mesenteric ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/12447
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  • 8
    Electronic Resource
    Electronic Resource
    Stimulation of the ATP-dependent interaction between actin and myosin by a myosin-binding fragment of smooth muscle caldesmon (1994)
    New York, NY : Wiley-Blackwell
    Cell Motility and the Cytoskeleton 29 (1994), S. 250-258 
    Details
    ISSN: 0886-1544
    Keywords: binding of caldesmon to myosin ; actin-activated ATPase activity of myosin ; actin-myosin interaction with in vitro motility assay ; myosin-binding domain of caldesmon ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: We reported previously that smooth muscle caldesmon stimulates the ATP-de-pendent interaction between actin and phosphorylated smooth muscle myosin, as monitored by ATPase measurment and in vitro motility assay. Furthermore, this effect changes from stimulatory to inhibitory with increasing concentrations of caldesmon [Ishikawa et al., 1991: J. Biol. Chem. 266:21784-21790]. The N-terminal (myosin-binding) fragment and the C-terminal (actin-binding) fragment were purified from digests of caldesmon. The effects of the myosin-binding fragment and the actin-binding fragment on the interaction were stimulatory and inhibitory, respectively, indicating that stimulatory and inhibitory domains are localized in the myosin-binding domain and actin-binding domain of caldesmon, respectively. The effect of the myosin-binding fragment on the interaction was exclusively stimulatory when the interaction was challenged by caldesmon, both at lower and higher concentrations. However, the actin-binding fragment had no effect on the interaction at lower concentrations and inhibited the interaction at higher concentrations. Thus, the stimulatory effect of caldesmon that is observed at lower concentrations can be explained by the hypothesis that the stimulatory effect of the myosin-binding domain predominates over the inhibitory effect of the actin-binding domain when the concentration of caldesmon is low. With uncleaved caldesmon, we also emphasized the role of the myosin-binding domain in the stimulation as follows; the stimulatory effect of caldesmon became obscured when binding of caldesmon to myosin was competed by the exogenous caldesmon-binding fragment of myosin. © 1994 Wiley-Liss, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cm.970290308
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  • 9
    Electronic Resource
    Electronic Resource
    Reversible G1 arrest of a human lung epithelial cell line by staurosporine (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 152 (1992), S. 646-653 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Staurosporine, a microbial-derived protein kinase inhibitor, reversibly blocked non-synchronized, replicating cultures of the human lung epithelial cell line EKVX in the G1 phase of cell cycle and inhibited DNA synthesis and cell replication. The mechanism of this cell-cycle arrest in EKVX cells by staurosporine was likely due to inhibition of protein kinase C (PKC) because: (1) dose-dependent inhibition of DNA synthesis occurred at levels of staurosporine that inhibit phosphorylation of PKC substrate, (2) inhibition of DNA synthesis was also seen after treatment with another PKC inhibitor H7, but not by the chemically similar HA1004, which has a relative inhibitory specificity for cAMP-dependent protein kinase, and (3) the DNA synthesis was not inhibited by specific tyrosine kinase inhibitors Genistein and Lavendustin A at concentrations that inhibit tyrosine kinase activity. Removal of staurosporine from cell culture media resulted in a rebound in PKC activity and synchronized DNA synthesis in EKVX cultures. The reversibility of the inhibition was noted even after 5 days of treatment with staurosporine, and DNA synthesis remained synchronized for at least two rounds of cell replication after removal of staurosporine. Flow cytometric analysis confirmed that more than 90% of the cell population was blocked in the G1 phase after cells were treated with staurosporine for 24 h. Agents such as staurosporine may be useful for synchronizing cell populations to study cell-cycle specific biochemical events important for the regulation of cell replication in the EKVX cell line. © 1992 Wiley-Liss, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041520325
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  • 10
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    Renormalization group theory and variational calculations for propagating fronts (1994)
    American Physical Society
    Details
    Publication Date: 1994-05-01
    Print ISSN: 1063-651X
    Electronic ISSN: 1095-3787
    Topics: Physics
    Published by American Physical Society
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