749 research outputs found
A role for doctors in assisted dying? An analysis of legal regulations and medical professional positions in six European countries
An extensive debate about assisted suicide and euthanasia has been taking place in westernized countries during the last twenty years. Traditionally, the medical profession has maintained a clear distance from euthanasia and assisted suicide, but this distance can no longer be justified by simply referring to the law.
This paper analyses the legal and, in particular, medical professional positions with respect to the doctor’s role in assisted dying in certain Western European countries (Belgium, Germany, Netherlands, Norway, Switzerland, United Kingdom) and discusses their implications for doctors
Content of health status reports of people seeking assisted suicide: a qualitative analysis
Erworben im Rahmen der Schweizer Nationallizenzen (http://www.nationallizenzen.ch)Two right-to-die organisations offer assisted suicide in Switzerland. The specific legal situation allows assistance to Swiss and foreign citizens. Both organisations require a report of the person's health status before considering assistance. This qualitative study explored these reports filed to legal authorities after the deaths of individuals in the area of Zurich. Health status reports in the legal medical dossiers of the deceased were analysed using content analysis and Grounded Theory. From 421 cases of assisted suicide (2001-2004), 350 reports on health status were filed. Many cases contained diagnosis lists only. Other reports had more elaborate reports revealing that some physicians were aware about the patient's death wish and the intention to solicit assisted suicide. Physicians' attitudes ranged from neutral to rather depreciative. Few physicians openly referred the patient to the organisations and supported the patient's request by highlighting a history of suffering as well as reporting understanding and agreement with the patient's wish to hasten death. In the health status reports five categories could be identified. Some files revealed that physicians were aware of the death wish. The knowledge and recognition of the patient's death wish varied from no apparent awareness to strongly supportive. This variety might be due to difficulties to discuss the death wish with patients, but might also reflect the challenge to avoid legal prosecution in the country of origin. To require comparable health status reports as requirements for the right-to-die organisations might be difficult to pursue
Characterization of fecal nitrogen forms produced by a sheep fed with 15N labeled ryegrass
Little is known about nitrogen (N) forms in ruminant feces, although this information is important to understand N dynamics in agro-ecosystems. We fed 15N labeled ryegrass hay to a sheep and collected 15N labeled feces. Nitrogen forms in the feces were characterized by chemical extractions, solid-state cross polarization 15N nuclear magnetic resonance spectroscopy (SS CP/MAS 15N NMR) and Curie-point pyrolysis-gas chromatography/mass spectrometry (Cp Py-GC/MS). A 4months incubation experiment was conducted to assess N release from the feces. Half of the fecal N could be ascribed to bacterial and endogenous debris and a third to undigested dietary N. About a tenth of the fecal N was mineralized during the incubation experiment. The 15N abundance of nitrate released during the incubation remained constant and close to the 15N abundance of the total feces N. The NMR analysis of the feces showed that most of the N was present in proteins, while some was present as heterocyclic N, amino acids and ammonium. The Cp Py-GC/MS analysis confirmed the presence of proteins, amino acids and heterocyclic N in the feces. Comparing these results to those obtained from the 15N labeled hay suggests that some N compounds present in the plant were not digested by the animal, and that the animal excreted de novo synthesized N compounds. The low content in ammonium and amino acids, the low rate of N release from these feces during the incubation and the relatively high fecal protein content, particularly the hard to mineralize undigested and microbially bound forms, can explain the low transfer of N from these feces to crops observed in a previous wor
Quark Orbital Angular Momentum in the Baryon
Analytical and numerical results, for the orbital and spin content carried by
different quark flavors in the baryons, are given in the chiral quark model
with symmetry breaking. The reduction of the quark spin, due to the spin
dilution in the chiral splitting processes, is transferred into the orbital
motion of quarks and antiquarks. The orbital angular momentum for each quark
flavor in the proton as a function of the partition factor and the
chiral splitting probability is shown. The cancellation between the spin
and orbital contributions in the spin sum rule and in the baryon magnetic
moments is discussed.Comment: 26 pages, 3 figures, revised version with minor eq. no and ref. no.
corrections. Discussion on the spin and a new ref. are adde
Octet, decuplet and antidecuplet magnetic moments in the chiral quark soliton model revisited
We reanalyse the magnetic moments of the baryon octet, decuplet, and
antidecuplet within the framework of the chiral quark-soliton model, with SU(3)
symmetry breaking taken into account. We consider the contributions of the
mixing of higher representations to the magnetic moment operator arising from
the SU(3) symmetry breaking. Dynamical parameters of the model are fixed by
experimental data for the magnetic moments of the baryon octet and from the
masses of the octet, decuplet and of . The magnetic moment of
depends rather strongly on the pion-nucleon sigma term and reads
to for and 75 MeV
respectively. The recently reported mass of is
compatible with MeV. As a byproduct the strange magnetic
moment of the nucleon is obtained with a value of n.m.Comment: RevTeX is used. 12 pages, 3 figures, final version for publication in
Phys. Rev.
Magnetic moments of the 3/2 resonances and their quark spin structure
We discuss magnetic moments of the baryons based on an earlier model
for the baryon magnetic moments, allowing for flavor symmetry breaking in the
quark magnetic moments as well as a general quark spin structure. From our
earlier analysis of the nucleon-hyperon magnetic moments and the measured
values of the magnetic moments of and we predict the
other magnetic moments and deduce the spin structure of the resonance
particles. We find from experiment that the total spin polarization of the
decuplet baryons, , is considerably smaller than the
non-relativistic quark model value of 3, although the data is still not good
enough to give a precise determination.Comment: 13 pages, REVTeX, 2 figures, minor clarifying change
The reaction and the magnetic dipole moment of the resonance
The reaction has been measured with
the TAPS calorimeter at the Mainz Microtron accelerator facility MAMI for
energies between = 1221--1331 MeV. Cross sections differential in
angle and energy have been determined for all particles in the final state in
three bins of the excitation energy. This reaction channel provides access to
the magnetic dipole moment of the resonance and, for the
first time, a value of has been extracted
The Singularity Problem for Space-Times with Torsion
The problem of a rigorous theory of singularities in space-times with torsion
is addressed. We define geodesics as curves whose tangent vector moves by
parallel transport. This is different from what other authors have done,
because their definition of geodesics only involves the Christoffel connection,
though studying theories with torsion. We propose a preliminary definition of
singularities which is based on timelike or null geodesic incompleteness, even
though for theories with torsion the paths of particles are not geodesics. The
study of the geodesic equation for cosmological models with torsion shows that
the definition has a physical relevance. It can also be motivated, as done in
the literature, remarking that the causal structure of a space-time with
torsion does not get changed with respect to general relativity. We then prove
how to extend Hawking's singularity theorem without causality assumptions to
the space-time of the ECSK theory. This is achieved studying the generalized
Raychaudhuri equation in the ECSK theory, the conditions for the existence of
conjugate points and properties of maximal timelike geodesics. Hawking's
theorem can be generalized, provided the torsion tensor obeys some conditions.
Thus our result can also be interpreted as a no-singularity theorem if these
additional conditions are not satisfied. In other words, it turns out that the
occurrence of singularities in closed cosmological models based on the ECSK
theory is less generic than in general relativity. Our work is to be compared
with previous papers in the literature. There are some relevant differences,
because we rely on a different definition of geodesics, we keep the field
equations of the ECSK theory in their original form rather than casting them in
a form similar to general relativity with a modified energy momentum tensor,Comment: 17 pages, plain-tex, published in Nuovo Cimento B, volume 105, pages
75-90, year 199
Electromagnetic Moments of the Baryon Decuplet
We compute the leading contributions to the magnetic dipole and electric
quadrupole moments of the baryon decuplet in chiral perturbation theory. The
measured value for the magnetic moment of the is used to determine
the local counterterm for the magnetic moments. We compare the chiral
perturbation theory predictions for the magnetic moments of the decuplet with
those of the baryon octet and find reasonable agreement with the predictions of
the large-- limit of QCD. The leading contribution to the quadrupole
moment of the and other members of the decuplet comes from one--loop
graphs. The pionic contribution is shown to be proportional to (and so
will not contribute to the quadrupole moment of nuclei), while the
contribution from kaons has both isovector and isoscalar components. The chiral
logarithmic enhancement of both pion and kaon loops has a coefficient that
vanishes in the limit. The third allowed moment, the magnetic octupole,
is shown to be dominated by a local counterterm with corrections arising at two
loops. We briefly mention the strange counterparts of these moments.Comment: Uses harvmac.tex, 15 pages with 3 PostScript figures packed using
uufiles. UCSD/PTH 93-22, QUSTH-93-05, Duke-TH-93-5
Reasons why people in Switzerland seek assisted suicide : the view of patients and physicians
Background: Assisted suicide is permitted in Switzerland provided that assistance is not motivated by selfish reasons. Suicides are commonly performed with the assistance of right-to-die organisations and the use of a lethal dose of barbiturates prescribed by a participating physician. We examined the reasons physicians provided for writing the prescription and the reasons patients gave for requesting assistance in dying.
Methods: We analysed all reported cases of assisted suicide that were facilitated by right-to-die organisations between 2001 and 2004 in the city of Zurich, and for which both the medical report and the optional letter written by the decedent providing information on their reasons for seeking assistance in suicide (N = 165).
Results: The reasons most often reported by physicians (ph), as well as persons who sought help (p), were: pain (ph: 56% of all assisted suicides, p: 58%), need for long-term care (ph: 37%, p: 39%), neurological symptoms (ph: 35%, p: 32%), immobility (ph: 23%, p: 30%) and dyspnoea (ph: 23%, p: 23%). Control of circumstances over death (ph: 12%, p: 39%); loss of dignity (ph: 6%, p: 38%); weakness (ph: 13%, p: 26%); less able to engage in activities that make life enjoyable (ph: 6%, p: 18%); and insomnia and loss of concentration (ph: 4%, p: 13%) were significantly more often mentioned by decedents than by physicians.
Conclusions: Both prescribing physicians and;patients provided with assistance to die quite often mentioned pain and other concerns, many of which were objectively assessable and related to unbearable suffering or unreasonable disability. Concerns referable to autonomy and individual judgement were more often noted by people seeking help than by the prescribing physicians
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