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  • 1
    Electronic Resource
    Electronic Resource
    Characterization of the 3′ untranslated region of the mouse homeobox geneHoxB5 (1995)
    Springer
    Cellular and molecular life sciences 51 (1995), S. 616-622 
    Details
    ISSN: 1420-9071
    Keywords: 70Z/3 pre-B cells ; poly-A addition site ; post-transcriptional regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The mouse pre-B cell line, 70Z/3, expresses multiple transcripts of the homeobox gene,HoxB5. We show here that this heterogeneity is due, at least in part, to the usage of alternative poly-A addition sites in the 3′ untranslated region (UT) of the primaryHoxB5 transcript. Furthermore, upon analysis of the subcellular distribution of the differentHoxB5 RNA species, we found that the transcripts are present mainly in the nucleus, with two-to-five-fold less RNA present in the cytoplasm. These studies suggest that multiple post-transcriptional regulatory mechanisms are involved in the expression ofHoxB5 RNA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02128755
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  • 2
    Electronic Resource
    Electronic Resource
    Correlation of toxicity and acetylcholinesterase (AChE) inhibition in 2-alkyl substituted 1,3-benzodioxolyl-4 N-methylcarbamates and related compounds
    Amsterdam : Elsevier
    Pesticide Biochemistry and Physiology 4 (1974), S. 178-184 
    Details
    ISSN: 0048-3575
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0048-3575(74)90097-2
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis of new bis(aminoethanethiol) (BAT) derivatives: possible ligands for 99mTc brain imaging agents (1985)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 28 (1985), S. 1280-1284 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00147a028
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  • 4
    Electronic Resource
    Electronic Resource
    Nondestructive inspection of a fractured nickel bar by Barkhausen and magnetoacoustic emissions : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 4750-4752 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Barkhausen emission (BE) and magnetoacoustic emission (MAE) measurements have been made on a nickel bar before and after it is torn apart by a tensile stress. The BE and MAE profiles obtained are all single-peaked. The peaks obtained after fracture are found at the lower field regions of the profiles, and this suggests that the field required for the domain wall motion in the fractured bar has been lowered. In the BE measurement, the signals show an increase of 44% (away from fracture end) to 144% (at fracture end); on the contrary, the MAE signals show a reduction of 43% (away from fracture end) to 14% (at fracture end). As the nickel bar is fractured, we find that in the broken pieces, the grains have been elongated in the stressed direction, and there is an increase of defects such as dislocations, voids and microcracks, especially near the fracture end of the bar. BE which is sensitive to these factors, has therefore been intensified. On the other hand, the plastically elongated grains, which have a lower absolute magnetostriction, enhance the reduction of MAE activity. The results measured from the nickel bar will be compared with those obtained from a fractured mild steel bar, which has different magnetostriction and other magnetic properties. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361660
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  • 5
    Electronic Resource
    Electronic Resource
    Theory for the rate of crack closure (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 212-216 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The theory for the constant rate of crack closure was investigated. The aim of this theory is to explain why the rate of crack closure is constant during the wetting stage of healing. Assuming that a surface crack in a material is treated by compression or with solvent, its crack closes up at a constant rate and its shape is independent of time. This approach was based on the Gibbs energy of an atom near the boundary between healed and unhealed zones. The results are in satisfactory agreement with experimental data in the literature. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.360654
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  • 6
    Electronic Resource
    Electronic Resource
    The dependence of magnetoacoustic emission on magnetizing frequency in nickel and mild steel : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 6057-6059 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetoacoustic emission (MAE) measurements have been made on nickel and mild steel samples subjected to a magnetizing field of various frequencies f. In both samples, the MAE signals are found to increase with increasing f. The experimental results are in good agreement with the predictions of a model relating the generation of MAE to domain wall nucleation-annihilation and domain wall motion. When f is large, the contribution of wall motion to the generation of MAE is predicted to be dominant. Conversely, when f is small, MAE is generated mainly by domain wall nucleation-annihilation processes. At high frequencies, the amount of MAE from both nickel and mild steel samples is found to vary linearly with f0.5. As f decreases, the MAE deviates from the f0.5 relationship for f〈10 Hz in mild steel, and for f〈2 Hz for nickel. The results suggest that in nickel, wall motion remains the dominant source of MAE generation over a wider frequency range than in steel. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362090
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of ferromagnetic layer structure on the magnetization process in NiFe/Co/Al–O/NiFe and Co/NiFe/Al–O/NiFe junctions (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 5753-5755 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of ferromagnetic layer structure on the magnetization reversal processes in (NiFe/Co)/Al–O/NiFe (S1) and (Co/NiFe)/Al–O/NiFe (S2) films was investigated. The films were fabricated by sputter deposition, and the Al–O layer was prepared by oxidizing an Al layer in air. Two distinct magnetization processes were observed by transmission Lorentz microscopy (TLM) with increasing in situ applied field. Reversal of the NiFe/Co bilayer in S1 occurs via moment rotation, while reversal of the Co/NiFe bilayer in S2 occurs by domain wall motion, in both cases at higher field than the top NiFe layer. The difference can be ascribed to the difference in the deposition order of the ferromagnetic bilayers (FMBs). High resolution electron microscopy shows that the grains in the top NiFe layer are randomly oriented in both films. In S1, the NiFe grains in the FMB are randomly oriented, with columnar grains present in the Co. In S2, a columnar grain structure of NiFe in the FMB is induced by the Co underlayer. The rough FMB/Al–O interface in S2 leads to weak biquadratic interlayer coupling, which will slightly reduce the field range of the antiparallel magnetization configuration. Hysteresis loops of S1 and S2 show two stage magnetization reversals in each sample, which are consistent with TLM results. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.370115
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  • 8
    Electronic Resource
    Electronic Resource
    Magnetic anisotropy of permalloy films grown on an Mo(001) stepped surface (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 7380-7382 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Mo(001) stepped surface was self-assembled on Al2O3(1-102) substrate by molecular beam epitaxy. Ni80Fe20 films were subsequently deposited on the fresh Mo(001) stepped surface at growth temperature (Tg) between 30 and 400 °C. Interestingly, in the low Tg regime (〈100 °C) the Ni80Fe20 films were grown as (001) single crystal while high Tg (〉300 °C) results in the growth of Ni80Fe20 (110) quadcrystal. For low Tg samples, the easy axis of the Ni80Fe20 film is directed parallel to the underlying Mo step edge direction and the M-H loop along the hard axis reveals a two-step magnetic moment rotation process. In contrast, the high Tg samples display isotropic-like magnetic behavior with a much enhanced coercivity due likely to the surface roughness effect. We conclude that the growth temperature of Ni80Fe20 film on the Mo stepped surface plays an important role on the crystal structure and magnetic anisotropy of Ni80Fe20 film. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1354588
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  • 9
    Electronic Resource
    Electronic Resource
    Biaxial exchange anisotropy in PtMn/Ni80Fe20(110) bicrystal films (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 4921-4923 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: By using molecular beam epitaxy PtMn/Ni80Fe20 bilayers were prepared on Mo(100) seeding layer on MgO(100) substrate. X-ray diffraction showed that the PtMn/Ni80Fe20 bilayers were mainly grown as (110) bicrystal films with 90° twin domains. The exchange anisotropy was studied by angular dependent magneto-optical Kerr effect. The results indicate that the PtMn/Ni80Fe20(110) bicrystal films possess biaxial exchange anisotropy with exchange field up to 130 Oe. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373203
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  • 10
    Electronic Resource
    Electronic Resource
    Low-resistance ohmic contacts on p-type GaN using Ni/Pd/Au metallization (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 3423-3425 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this letter, a low-resistance ohmic contact on p-type GaN using an alloy of Ni/Pd/Au is reported. The Mg doped p-type GaN samples were grown by metalorganic chemical vapor deposition with a carrier concentration of 4.1×1017 cm−3. The as-grown Mg doped samples were deposited with Ni (20 nm)/Pd (20 nm)/Au (100 nm) and then annealed in air, nitrogen, and oxygen ambient conditions at different annealing temperatures ranging from 350 to 650 °C. Linear I–V ohmic characteristics were observed with specific resistance as low as 1.0×10−4 Ω cm2 for the samples annealed in oxygen atmosphere. Similar contact metal composition was also deposited on Be-implanted p-type GaN samples with a carrier density of 8.1×1019 cm−3. Without further annealing process, the samples show good ohmic contact with a lowest specific resistance of 4.5×10−6 Ω cm2. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1327276
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