214 research outputs found

    Extended Hylleraas three-electron integral

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    A closed form expression for the three-electron Hylleraas integral involving the inverse quadratic power of one inter-particle coordinate is obtained, and recursion relations are derived for positive powers of other coordinates. This result is suited for high precision calculations of relativistic effects in lithium and light lithium-like ions.Comment: Submited to Phys. Rev.

    Relativistic, QED, and nuclear mass effects in the magnetic shielding of 3^3He

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    The magnetic shielding σ\sigma of 3^3He is studied. The complete relativistic corrections of order O(α2)O(\alpha^2), leading QED corrections of order O(α3lnα)O(\alpha^3 \ln\alpha), and finite nuclear mass effects of order O(m/mN)O(m/m_{\rm N}) are calculated with high numerical precision. The resulting theoretical predictions for σ=59.967 43(10)106\sigma = 59.967~43(10)\cdot 10^{-6} are the most accurate to date among all elements and support the use of 3^3He as a NMR standard.Comment: 10 pages, corrected minor errors in Eqs.(6,7

    Isotope Shift Measurements of Stable and Short-Lived Lithium Isotopes for Nuclear Charge Radii Determination

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    Changes in the mean-square nuclear charge radii along the lithium isotopic chain were determined using a combination of precise isotope shift measurements and theoretical atomic structure calculations. Nuclear charge radii of light elements are of high interest due to the appearance of the nuclear halo phenomenon in this region of the nuclear chart. During the past years we have developed a new laser spectroscopic approach to determine the charge radii of lithium isotopes which combines high sensitivity, speed, and accuracy to measure the extremely small field shift of an 8 ms lifetime isotope with production rates on the order of only 10,000 atoms/s. The method was applied to all bound isotopes of lithium including the two-neutron halo isotope Li-11 at the on-line isotope separators at GSI, Darmstadt, Germany and at TRIUMF, Vancouver, Canada. We describe the laser spectroscopic method in detail, present updated and improved values from theory and experiment, and discuss the results.Comment: 34 pages, 24 figures, 14 table

    Redefining Palliative Care-A New Consensus-Based Definition.

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    The International Association for Hospice and Palliative Care developed a consensus-based definition of palliative care (PC) that focuses on the relief of serious health-related suffering, a concept put forward by the Lancet Commission Global Access to Palliative Care and Pain Relief. The main objective of this article is to present the research behind the new definition. The three-phased consensus process involved health care workers from countries in all income levels. In Phase 1, 38 PC experts evaluated the components of the World Health Organization definition and suggested new/revised ones. In Phase 2, 412 International Association for Hospice and Palliative Care members in 88 countries expressed their level of agreement with the suggested components. In Phase 3, using results from Phase 2, the expert panel developed the definition. The consensus-based definition is as follows: Palliative care is the active holistic care of individuals across all ages with serious health-related suffering due to severe illness and especially of those near the end of life. It aims to improve the quality of life of patients, their families and their caregivers. The definition includes a number of bullet points with additional details as well as recommendations for governments to reduce barriers to PC. Participants had significantly different perceptions and interpretations of PC. The greatest challenge faced by the core group was trying to find a middle ground between those who think that PC is the relief of all suffering and those who believe that PC describes the care of those with a very limited remaining life span

    Redefining palliative care-a new consensus-based definition

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    Context: The International Association for Hospice and Palliative Care developed a consensus-based definition of palliative care (PC) that focuses on the relief of serious health-related suffering, a concept put forward by the Lancet Commission Global Access to Palliative Care and Pain Relief. Objective: The main objective of this article is to present the research behind the new definition. Methods: The three-phased consensus process involved health care workers from countries in all income levels. In Phase 1, 38 PC experts evaluated the components of the World Health Organization definition and suggested new/revised ones. In Phase 2, 412 International Association for Hospice and Palliative Care members in 88 countries expressed their level of agreement with the suggested components. In Phase 3, using results from Phase 2, the expert panel developed the definition. Results: The consensus-based definition is as follows: Palliative care is the active holistic care of individuals across all ages with serious health-related suffering due to severe illness and especially of those near the end of life. It aims to improve the quality of life of patients, their families and their caregivers. The definition includes a number of bullet points with additional details as well as recommendations for governments to reduce barriers to PC. Conclusion: Participants had significantly different perceptions and interpretations of PC. The greatest challenge faced by the core group was trying to find a middle ground between those who think that PC is the relief of all suffering and those who believe that PC describes the care of those with a very limited remaining life span

    Myocardial Fat Imaging

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    The presence of intramyocardial fat may form a substrate for arrhythmias, and fibrofatty infiltration of the myocardium has been shown to be associated with sudden death. Therefore, noninvasive detection could have high prognostic value. Fat-water–separated imaging in the heart by MRI is a sensitive means of detecting intramyocardial fat and characterizing fibrofatty infiltration. It is also useful in characterizing fatty tumors and delineating epicardial and/or pericardial fat. Multi-echo methods for fat and water separation provide a sensitive means of detecting small concentrations of fat with positive contrast and have a number of advantages over conventional chemical-shift fat suppression. Furthermore, fat and water–separated imaging is useful in resolving artifacts that may arise due to the presence of fat. Examples of fat-water–separated imaging of the heart are presented for patients with ischemic and nonischemic cardiomyopathies, as well as general tissue classification

    Seelsorge in einer sich verändernden polnischen Gesellschaft

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    polska wersja artykułu opublikowanego po niemieckuProwadzone od wieków przez zakony, stowarzyszenia i fundacje chrześcijańskie szpitale, domy pomocy, ośrodki Caritasu i ochronki zostały znacjonalizowane w Polsce i Europie Wschodniej po 1945 roku. Jednocześnie z oddaleniem związków wyznaniowych od opieki medycznej i pomocy społecznej malał prestiż zawodów medycznych i pomocowych oraz marksistowska ideologizacja środowiska. Opór integrował w Polsce te środowiska e z Kościołem katolickim, przypominającymi o etyce chrześcijańskiej i deontologii opartej na chrześcijańskim personalizmie. Solidarność Służby Zdrowia i postulaty dotyczące powrotu do etyki zawodów medycznych oraz przywrócenia funkcji kapelanów szpitali i instytucji pomocy społecznej znalazły się w Rozporządzeniu Ministra Zdrowia z 1981 roku. Do 1989 roku w Polsce obszarem, w którym na styku ochrony zdrowia, pomocy społecznej, wolontariatu i związków wyznaniowych, rozwijała się opieka duchowo-religijna, były wolontaryjne zespoły domowej opieki hospicyjnej. Ich przykład pomógł w procesie odbudowy opieki duchowo-religijnej w ochronie zdrowia i pomocy społecznej, a także w nowych inicjatywach zespołowej opieki duszpasterskiej. Współczesne polskie społeczeństwo jest jednym z najbardziej religijnych w Europie, a dominującą religią jest katolicyzm. Wobec zmian społecznych i kulturowych ważna jest wrażliwość wobec zmieniających się potrzeb duchowo-religijnych i różny stopień przynależności pacjentów do wspólnot wiary. Świdomość różnorodności wyznaniowej i kulturowej, rozróżnienie potrzeb duchowych, uznawanych za jedną z powszechnych potrzeb każdej osoby, od potrzeb religijnych, związanych z przynależnością do danej wspólnoty wiary jest wyzwaniem w pastoralnej opiece w warunkach instytucjonalnych i domowych.Charitable institutions, carried out for centuries by religious orders, associations and foundations Christian hospitals, nursing homes, Caritas centers were nationalized in Poland and Eastern Europe after 1945. Simultaneously with the remoteness of religious associations of medical care and social assistance diminish the prestige of the medical profession and Marxist ideologisation of caring environment. Resistance integrated those careers in Poland with the Catholic Church, reminiscent of Christian ethics and professional conduct based on Christian personalism. Solidarity demanded return to ethics of the medical profession and to restore the chaplains of hospitals and social assistance institutions. It was included in the Regulation of the Minister of Health in 1981. Until 1989 in Poland, an area in which to contact the health, social welfare, voluntary and religious organizations, developed health spiritual-religious, volunteer teams were home hospice care. Their example helped in the reconstruction process of spiritual and religious care in health care and social assistance, as well as new initiatives in the pastoral care teams. The contemporary Polish society is one of the most religious in Europe, and the dominant religion is Catholicism. To change the social and cultural importance of sensitivity to the changing needs of the spiritual-religious and different degree of membership subjects to the faith communities. Awareness of diversity of religious and cultural distinction spiritual needs, recognized as one of the common needs of each person, from religious needs, relating to participation in the faith community is a challenge in pastoral care in institutional settings and home care
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