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3.
Phys Rev Lett ; 124(4): 042503, 2020 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-32058764

RESUMO

There is sparse direct experimental evidence that atomic nuclei can exhibit stable "pear" shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in ^{222,228}Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing ^{222}Ra as pear shaped with stable octupole deformation, while ^{228}Ra behaves like an octupole vibrator.

4.
Tijdschr Psychiatr ; 61(7): 464-476, 2019.
Artigo em Holandês | MEDLINE | ID: mdl-31372968

RESUMO

BACKGROUND: Although hanging is a frequently used suicide method, little is known about the prognosis of patients that survived hanging (near-hanging).
AIM: To describe a case report and present a literature-review on the functional neurologic outcome after near-hanging (with separate analyses for the presence of cardiac arrest and use of neuro-protection), and possible residual neuropsychological symptoms.
RESULTS: Only 12,4% (bi 4,6-29,4) of patients after near-hanging with cardiac arrest had a good functional outcome, compared to 90,6% (bi 85,7-94,0) of those without cardiac arrest. Neuroprotection through targeted temperature management has no significant influence on the outcome, neither in the presence nor absence of cardiac arrest. Near-hanging victims with a good functional outcome have, at most, mild residual neuropsychological symptoms. These can manifest throughout all cognitive domains, although learning and memory are most frequently and severely affected. DISCUSSION A significant subgroup of patients after near-hanging without cardiac arrest recovers towards a good level of functioning. A range of residual neuropsychological symptoms remain apparent, which are challenges for diagnostics and suicide prevention.


Assuntos
Hipotermia Induzida/métodos , Hipóxia-Isquemia Encefálica/etiologia , Hipóxia-Isquemia Encefálica/fisiopatologia , Tentativa de Suicídio , Asfixia , Serviço Hospitalar de Emergência , Parada Cardíaca , Humanos , Prognóstico , Tentativa de Suicídio/psicologia
5.
Nat Commun ; 10(1): 2473, 2019 06 06.
Artigo em Inglês | MEDLINE | ID: mdl-31171788

RESUMO

There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and hence probe physics beyond the Standard Model of particle physics. Isotopes of both radon and radium have been identified as candidates for such measurements. Here, we observed the low-lying quantum states in 224Rn and 226Rn by accelerating beams of these radioactive nuclei. We show that radon isotopes undergo octupole vibrations but do not possess static pear-shapes in their ground states. We conclude that radon atoms provide less favourable conditions for the enhancement of a measurable atomic electric-dipole moment.

6.
Tijdschr Psychiatr ; 60(1): 55-59, 2018.
Artigo em Holandês | MEDLINE | ID: mdl-29341058

RESUMO

Takotsubo cardiomyopathy (tcmp) is an acute, reversible disruption of the left ventricular systolic function. In many respects the clinical presentation closely resembles acute coronary syndromes (myocardial infarction). tcmp is a syndrome with a pathophysiology that is not fully understood and which seems to be closely associated with psychiatric disorders or psychological problems. We present a case in which a patient with several risk factors developed a tcmp and a depression with psychotic features, followed by catatonia. We describe the syndrome, make some pathophysiological hypotheses and point to possible connections with psychiatric disorders and psychological factors.


Assuntos
Catatonia/diagnóstico , Depressão/diagnóstico , Transtornos Psicóticos/diagnóstico , Cardiomiopatia de Takotsubo/diagnóstico , Catatonia/etiologia , Feminino , Humanos , Pessoa de Meia-Idade , Estresse Psicológico/complicações , Cardiomiopatia de Takotsubo/etiologia
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