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  • 1
    Electronic Resource
    Electronic Resource
    Direct Ethylenediamine Tetraacetate Titration Methods for Magnesium and Calcium (1954)
    s.l. : American Chemical Society
    Analytical chemistry 26 (1954), S. 1944-1948 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60096a024
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  • 2
    Electronic Resource
    Electronic Resource
    A turbulence model with stochastic soliton motion (1990)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 31 (1990), S. 506-516 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: A dissipative Benjamin–Ono equation is used to study fluid and plasma turbulence. The system is studied by an exact nonlinear mode truncation method in which a finite number of poles are used to present the solution. The justification of the pole expansion approach is discussed with the proof of a completeness theorem. The stability and spectrum analysis show that asymptotic behavior of the system is completely represented by a finite number of nonlinear modes. The behavior of those nonlinear modes resembles solitons, and exhibits a wide range of bifurcation phenomena and routes to turbulence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.528884
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  • 3
    Electronic Resource
    Electronic Resource
    Observations on the Taiwanese Strain of Leucocytozoon caulleryi (Haemosporina) in Chickens (1986)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 33 (1986), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: . The Taiwanese strain of Leucocytozoon caulleryi was isolated from an infected chicken in Taipei, Taiwan, and established in chickens and biting midges Culicoides arakawae from Japan. Sporogony of the strain in C. arakawae was completed on day 3 after the infective blood meals at 25°C. Sporozoites isolated from the salivary glands of C. arakawae on days 3 or 4 after feeding caused infection in all the chickens inoculated. The strain showed high pathogenicity for chickens. Mortality of chickens rose with an increase in the number of sporozoites inoculated. The prepatent period for chickens inoculated with sporozoites was 14 days. Parasites appeared in the peripheral blood of chickens on day 15 and disappeared on day 26 after sporozoite inoculation. Soluble antigens were found in the sera of chickens infected with the strain between 10 and 17 days after inoculation, and homologous antibodies appeared after 17 days. Antigens prepared from sera, schizonts, merozoites, and gametocytes of the Taiwanese strain reacted with the sera of chickens infected witt the same strain or the strain isolated in Japan. The chickens that recovered from a primary infection with the Taiwanese strain demonstrated complete resistance to reinfection with the same strain or the strain isolated in Japan.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1986.tb05597.x
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  • 4
    Electronic Resource
    Electronic Resource
    Temperature dependence of photoluminescence on molecular-beam-epitaxy grown Ga2O3(Gd2O3)/GaAs (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 2038-2040 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Device-quality Ga2O3(Gd2O3) thin films have been grown on GaAs using molecular-beam epitaxy. Photoluminescence measurements have been performed within a temperature range of 4.2–300 K. Detailed analysis on the peak position, peak width, and peak intensity has been compared with those of a conventional Al0.45Ga0.55As/GaAs sample, which is known to be the state-of-the-art structure of dielectrics/GaAs. Both the peak intensity and the peak width are very similar between the two. The results show an almost indistinguishable excellent quality between the Ga2O3(Gd2O3)/GaAs and the Al0.45Ga0.55As/GaAs samples. This demonstrates the superiority of the Ga2O3(Gd2O3)/GaAs structure and supports further the reported successfully manufactured GaAs metal-oxide-semiconductor field-effect transistors using this Ga2O3(Gd2O3) as the gate oxide. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.124908
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  • 5
    Electronic Resource
    Electronic Resource
    Yellow luminescence depth profiling on GaN epifilms using reactive ion etching (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 73 (1998), S. 2802-2804 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Depth profiling measurements of photoluminescence on GaN epitaxial films grown on c-plane sapphire with metalorganic chemical vapor deposition have been performed. Dry etching technique of reactive ion etching is used with reactive gas of CCl2F2/H2/Ar under an operation power of 200 W. Before and after each etching, reflectivity and photoluminescence spectra are measured. Film thickness is determined from both the scanning electron microscopy and the interference oscillations of the reflectivity spectra. An excellent steady etching rate of 19.2 nm/min is established. The photoluminescence measurements show that both the near-band-edge and the yellow luminescence remain fairly constant until the film thickness of about 700 nm, and a large drop is obtained in the ratio of near-band-edge to yellow emission intensity under about 300 nm. Analysis shows that the yellow luminescence emitters are mostly confined within the near interface region, and supports the origin of yellow luminescence to be due to native defects instead of impurities. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.122595
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  • 6
    Electronic Resource
    Electronic Resource
    Carbohydrate-Protein Interactions: Basis of Glycobiology (1995)
    s.l. : American Chemical Society
    Accounts of chemical research 28 (1995), S. 321-327 
    Details
    ISSN: 1520-4898
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ar00056a001
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  • 7
    Electronic Resource
    Electronic Resource
    Electron–ion hybrid instabilities driven by velocity shear in a magnetized plasma (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 1708-1723 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The stability of a magnetized plasma is investigated in which a sheared electron flow channel is present. The flow's peak velocity and shear scale length are denoted by V and L, respectively. If the velocity channel is perpendicular to the confining magnetic field and L≤ ρi (ρi is the ion Larmor radius) an electrostatic instability develops whose frequency is on the order of the lower hybrid frequency. For V/(ΩeL) (approximately-greater-than) 0.02 (Ωe denotes the electron cyclotron frequency), the peak growth rate is on the order of the lower hybrid frequency when k(parallel) = 0 (in here, k(parallel) is the wave number along the magnetic field). For V/(ΩeL) (approximately-greater-than) 0.1 and k(parallel) = 0, the spectrum peaks when kyL ∼ 1, where ky is the wave number in the direction of the flow velocity. For this mode it is shown that (i) a net cross-field current is not required for the onset of instability and (ii) the growth rate is not reduced by a velocity profile with no net flow (spatially averaged). Hence we conclude that velocity shear is the only source of free energy. Further, it is shown that density gradients do not stabilize this mode. It follows that the mode presented in this work cannot be identified with the well-known modified two-stream instability. If the velocity channel is parallel to the confining magnetic field and the plasma is weakly magnetized, an instability driven by velocity shear is shown to exist, provided that V/(ωpeL) (approximately-greater-than) 0.32, where ωpe is the electron plasma frequency. It is shown that a net plasma current is not required in order for this instability to be excited.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860028
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  • 8
    Electronic Resource
    Electronic Resource
    Simulation of ion-cyclotron-like modes in a magnetoplasma with transverse inhomogeneous electric field (1988)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 31 (1988), S. 1568-1576 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ion-cyclotron turbulence has been observed with shocks and double layers in the magnetosphere where strongly localized electric fields perpendicular to the magnetic field are present. Theoretical analysis suggests that electrostatic waves with frequencies of the order of the ion-cyclotron frequency can be destabilized as a result of the coupling of regions of positive and negative-energy ion waves. The nonlocal theory for a smooth profile of transverse inhomogeneous electric fields shows that localized ion waves grow in the region where the electric fields are present. Using a spatially two-dimensional electrostatic code, we investigate this instability in plasma conditions characterized by a localized transverse electric field L(very-much-less-than)Lx, where Lx is the simulation length in the x direction; and distinguish it from the transverse kinetic Kelvin–Helmholtz instability. The simulation results show that the growing ion waves are associated with the small vortices in the linear state, which evolve into a nonlinear stage dominated by large vortices with lower frequencies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866696
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  • 9
    Electronic Resource
    Electronic Resource
    Kinetic theory for electrostatic waves due to transverse velocity shears (1988)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 31 (1988), S. 823-838 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A kinetic theory in the form of an integral equation is provided to study the electrostatic oscillations in a collisionless plasma immersed in a uniform magnetic field and a nonuniform transverse electric field. In the low temperature limit (kyρi (very-much-less-than)1, where ky is the wave vector in the y direction and ρi is the ion gyroradius) the dispersion differential equation is recovered for the transverse Kelvin–Helmholtz modes for arbitrary values of k(parallel), where k(parallel) is the component of the wave vector in the direction of the external magnetic field assumed in the z direction. For higher temperatures (kyρi〉1) the ion-cyclotron-like modes described earlier in the literature by Ganguli, Lee, and Palmadesso [Phys. Fluids 28, 761 (1985)] are recovered. In this article the integral equation is reduced to a second-order differential equation and a study is made of the kinetic Kelvin–Helmholtz and the ion-cyclotron-like modes that constitute the two branches of oscillation in a magnetized plasma including a transverse inhomogeneous dc electric field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866818
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  • 10
    Electronic Resource
    Electronic Resource
    A quadratic-form analysis of the collisionless tearing mode (1988)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 31 (1988), S. 2944-2950 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this paper a method is described to study the collisionless tearing mode properties in cases where complicated orbit integrals must be evaluated. The method is based on a quadratic form of a self-adjoint integrodifferential operator. No approximations are made for equilibrium orbits and perturbed fields in evaluating the necessary orbit integrals. The objective of the paper is to provide a rigorous theoretical basis for the method. Application to physical systems is demonstrated for the collisionless tearing mode in a non-Maxwellian neutral sheet. This method may be applied to other Vlasov instabilities and is particularly suited for problems where the numerical evaluation of orbit integrals is time consuming. In such cases, the present method can yield stability criteria with minimal computation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866951
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