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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 2449-2451 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The β-diketonate process for chemical vapor deposition Y1Ba2Cu3O6.5+x is extended to deposition on enlarged areas up to 20 cm2. The films are prepared on monocrystalline SrTiO3 and reveal a surface topography comparable to films by laser ablation. The inductively measured transition temperature Tc is up to 93 K and the transition width is smaller than 1 K; Tc is well reproduced from run to run. The critical current density jc at 77 K attains values as high as 6×106 A/cm2 in zero magnetic field; the current carrying capacity in magnetic fields up to 8 T is presented.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 115 (2001), S. 2768-2775 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Ethylene adsorption on vicinal, single-domain Ge(100)-(2×1) has been investigated by thermal desorption spectroscopy (TPD) and angle-resolved photoemission (ARUPS) using linearly polarized synchrotron radiation. Thermal desorption experiments show that chemisorbed C2H4 desorbs from Ge(100) nondissociatively around 393 K with a high temperature shoulder which is tentatively assigned to step site desorption. The ethylene saturation coverage is strongly temperature dependent. Adsorption at 90 K saturates at 0.38 monolayer (ML), whereas adsorption at 170 K leads to a saturation coverage of approximately 1 ML. This behavior is explained by an adsorption barrier for coverages exceeding 0.38 ML. ARUP spectra for a dilute and the saturated ethylene monolayer reveal clear differences. Using photoemission selection rules a highly (C2v) symmetric adsorption geometry with a C–C bond axis parallel to the Ge–Ge dimer axis is found for the dilute layer; whereas a reduced C2 adsorption symmetry is found for the saturated ethylene layer. The comparison of photoemission spectra for C2H4 on Ge(100) and Si(100) shows that C2H4 is di-σ bound to the dangling bonds of a single Ge–Ge dimer. For two molecular orbitals, 1b3u and 1b2g, one-dimensional band structures with dispersion widths of 0.5 and 0.39 eV, respectively, along the Ge–Ge dimer rows are found which present a straightforward explanation for the observed symmetry reduction and adsorption behavior. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2015-11-11
    Description: Introduction Several studies have identified that socioeconomic inequalities in coronary artery disease (CAD) morbidity and mortality lead to a disadvantage in patients with low socioeconomic status (SES). International studies have shown that socioeconomic inequalities also exist in terms of access, utilisation and quality of cardiac care. The aim of this qualitative study is to provide information on the impact of socioeconomic inequalities on the pathway of care for CAD, and to establish which factors lead to socioeconomic inequality of care to form and expand existing scientific theories. Methods and analysis A longitudinal qualitative study with 48 patients with CAD, aged 60–80 years, is being conducted. Patients have been recruited consecutively at the University Hospital in Halle/Saale, Germany, and will be followed for a period of 6 months. Patients are interviewed two times face-to-face using semistructured interviews. Data are transcribed and analysed based on grounded theory. Ethics and dissemination Only participants who have been informed and who have signed a declaration of consent have been included in the study. The study complies rigorously with data protection legislation. Approval of the Ethical Review Committee at the Martin-Luther University Halle-Wittenberg, Germany was obtained. The results of the study will be presented at several congresses, and will be published in high-quality peer-reviewed international journals. Trial registration number This study has been registered with the German Clinical Trials Register and assigned DRKS00007839.
    Keywords: Open access, Cardiovascular medicine, Health services research, Qualitative research, Research methods, Sociology
    Electronic ISSN: 2044-6055
    Topics: Medicine
    Published by BMJ Publishing
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  • 4
    Publication Date: 2015-07-12
    Description: Introduction Studies from various scientific disciplines have demonstrated that socioeconomic inequalities in type 2 diabetes mellitus negatively affect groups with a low socioeconomic status. Furthermore, socioeconomic inequalities also exist in terms of access to, and utilisation and perceived quality of, diabetological care. The aim of this qualitative study, which focuses on the patient's perspective, is to provide insights into the ways socioeconomic inequalities impact the course of treatment and care of patients with type 2 diabetes mellitus. The study aims to develop an understanding of how socioeconomic inequalities in care arise. Methods and analysis A cross-sectional qualitative study will be conducted using a sample of about 20 patients with type 2 diabetes mellitus aged 18 and older. Patients will be recruited successively from the University Hospital in Halle/Saale, Germany, a general practitioner's office, and in a specialised diabetological practice. The patients will be interviewed personally once, using semistructured qualitative interviews. All interviews will be recorded, transcribed, and analysed based on Grounded Theory. Ethics and dissemination All interviewees will receive comprehensive written information about the study and sign a declaration of consent prior to the interview. The study will comply rigorously with data protection legislation. The research team has obtained the approval of the Ethical Review Committee at the MLU Halle-Wittenberg, Germany. The results of the study will be published in high-quality, peer-reviewed international journals, presented at several congresses and used for developing follow-up research projects. Trial registration number This study has been registered with the German Clinical Trials Register and assigned DRKS00007847.
    Keywords: Open access, Health services research, Qualitative research, Research methods, Sociology, Diabetes and Endocrinology
    Electronic ISSN: 2044-6055
    Topics: Medicine
    Published by BMJ Publishing
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