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  • 1
    Book
    Book
    Chichester u.a. :Wiley,
    Title: Essentials of computational chemistry : Theories and models
    Author: Cramer, C.
    Publisher: Chichester u.a. :Wiley,
    Year of publication: 2002
    ISBN: 0-471-48552-7
    Type of Medium: Book
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 7 (2000), S. 391-402 
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Recent one-dimensional particle-in-cell simulations of a cylindrical postcathode direct current magnetron discharge have shown a transition from the usual positive space charge mode, dominated by a strong cathode fall, to a higher impedance negative space charge mode, characterized by a broad anode fall, as either the pressure is decreased or the magnetic field is increased. Such behavior is consistent with a steady decrease in the cross-field electron transport coefficients as calculated from classical fluid theory. However, experimental measurements of the distribution of electric potential between the electrodes do not exhibit any systematic variation with changes in magnetic field or pressure. This suggests that anomalous transport mechanisms increase the electron transport above the level predicted by classical transport theory, so maintaining the positive space charge mode at low pressures. It is shown using a fluid model that electrostatic oscillations with ω(approximately-greater-than)νi, where νi is the ion-neutral collision frequency, propagating in the E×B direction are unstable with growth rates comparable to the charged particle transit times. Such oscillations, which cannot be modeled in a one-dimensional particle-in-cell model, may contribute to the anomalous transport observed in experiments. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have built an end station for x-ray magnetic circular dichroism (XMCD) measurements on proteins and paramagnetic compounds. Our current setup reaches a base temperature of 2.6 K and magnetic fields up to 6 T and is operated at beamline 4.02 of the Advanced Light Source. In this article we discuss magnetic field and low temperature requirements needed to perform XMCD experiments on magnetically saturated samples. For a typical 3d transition metal paramagnetic system we find that fields above 4 T at a temperature of 2.6 K saturate the magnetization of the sample to more than 80%. We discuss principal considerations for a setup operated at low temperatures on a synchrotron and show that infrared heat shielding is unavoidable to obtain the base temperature at the sample. We show first experimental results from the vanadium (IV) compound VOSO4X[H2O]. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Inc
    Public health nursing 18 (2001), S. 0 
    ISSN: 1525-1446
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Theory-based assessment of congregant expectations and needs should be conducted prior to beginning a parish nurse program. However, no such assessments are found in the literature. Using Andersen's Health Access Model as a framework, investigators conducted interviews with 117 randomly selected congregants in five urban African American churches to describe their perceived needs and expectations. Causing most concern were the following: (a) symptoms of illness—high blood pressure (50.4%), dental problems (43.6%), and back pain (41%); and (b) health habits/risks—weight (75%), exercise (63%), and diet (63%). Younger adults were significantly more concerned about all aspects of their health than their older counterparts. Women were significantly more likely to express concern about health habits and health risks than males. No significant relationship was found between perceived need and access to care. Although terming health care services “adequate”, congregants expressed many unmet health needs. This seemingly contradictory finding may illuminate a concrete role for the parish nurse, i.e., addressing personal health care concerns not alleviated by the current “adequate” health care delivery system. This study's significance lies not only in providing programming guidance, but also in theoretical insights into the role of the parish nurse.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Malden, USA : Blackwell Science Inc
    Public health nursing 20 (2003), S. 0 
    ISSN: 1525-1446
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract  Community coalitions have become an increasingly popular means for addressing community health issues, yet evaluating their effectiveness and performance has presented formidable challenges. To meet the community's need for health program evaluation, public health nurses will need to become better prepared to deal with the complexities of evaluating coalitions and their multifaceted organizational structures. This article presents the methodology and conceptual framework, Targeting Outcomes of Programs (TOP), used to evaluate the performance and impact of a local community coalition. The case study offered here focuses on a tobacco-prevention coalition composed of 15 public and private agencies and their 121 activities. The TOP evaluation model provided the coalition with formative evaluation, needed to improve the coalition's on-going program delivery, and summative evaluation, needed for annual reviews of the coalition's effectiveness and impact in the community. The methodological approach and instrument presented here provide the public health nurse with a solid conceptual framework for approaching such a task.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 76 (1954), S. 3024-3028 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 64 (1942), S. 223-226 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 6911-6913 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have constructed a series of microstrips for transmission of microwaves. These microstrips incorporate ferromagnetic and dielectric layers and therefore absorb microwave energy at the ferromagnetic resonance (FMR) frequency. The absorption notch in transmission can be tuned to various frequencies by varying an external applied magnetic field. For our devices, which incorporate Fe as the ferromagnetic material, the resultant FMR frequencies range from 10–20 GHz for applied fields up to only 1000 Oe. This frequency range is substantially higher than those found in devices utilizing a dielectric ferrimagnet such as YIG. We constructed devices using monocrystalline Fe films grown in a molecular beam epitaxy system. Our devices are of different construction than other Fe dielectric microstrips and show much improvement in terms of notch width and depth. We observed maximum attenuation on the order of 100 dB/cm, much larger than previously reported values of 4 dB/cm. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial and engineering chemistry 15 (1943), S. 319-320 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 32 (1940), S. 856-857 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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