Molecular and electronic structure of terminal and alkali metal-capped uranium(V) nitride complexes

Determining the electronic structure of actinide complexes is intrinsically challenging because inter-electronic repulsion, crystal field, and spin–orbit coupling effects can be of similar magnitude. Moreover, such efforts have been hampered by the lack of structurally analogous families of complexes to study. Here we report an improved method to U≡N triple bonds, and assemble a family of uranium(V) nitrides. Along with an isoelectronic oxo, we quantify the electronic structure of this 5f1 family by magnetometry, optical and electron paramagnetic resonance (EPR) spectroscopies and modelling. Thus, we define the relative importance of the spin–orbit and crystal field interactions, and explain the experimentally observed different ground states. We find optical absorption linewidths give a potential tool to identify spin–orbit coupled states, and show measurement of UV···UV super-exchange coupling in dimers by EPR. We show that observed slow magnetic relaxation occurs via two-phonon processes, with no obvious correlation to the crystal field

Measurement of the Bottom-Strange Meson Mixing Phase in the Full CDF Data Set

We report a measurement of the bottom-strange meson mixing phase \beta_s using the time evolution of B0_s -> J/\psi (->\mu+\mu-) \phi (-> K+ K-) decays in which the quark-flavor content of the bottom-strange meson is identified at production. This measurement uses the full data set of proton-antiproton collisions at sqrt(s)= 1.96 TeV collected by the Collider Detector experiment at the Fermilab Tevatron, corresponding to 9.6 fb-1 of integrated luminosity. We report confidence regions in the two-dimensional space of \beta_s and the B0_s decay-width difference \Delta\Gamma_s, and measure \beta_s in [-\pi/2, -1.51] U [-0.06, 0.30] U [1.26, \pi/2] at the 68% confidence level, in agreement with the standard model expectation. Assuming the standard model value of \beta_s, we also determine \Delta\Gamma_s = 0.068 +- 0.026 (stat) +- 0.009 (syst) ps-1 and the mean B0_s lifetime, \tau_s = 1.528 +- 0.019 (stat) +- 0.009 (syst) ps, which are consistent and competitive with determinations by other experiments.Comment: 8 pages, 2 figures, Phys. Rev. Lett 109, 171802 (2012

De-escalation techniques in various settings

Introduction. Severe mental disorders represent a risk factor for violent episodes. Aggressiveness and violence can be expressed verbally or behaviorally, and aggression events may occur in different clinical settings during any stage of mental disorder’s course. We sought to define a set of communication techniques and guidelines in order to improve prevention and reduce aggressive and violent episodes’ damage risk in mental healthcare. De-escalation is conceived as a process comprising the ability to gradually resolve a potentially violent situation. It consists of different steps of communication, both verbal and nonverbal, aimed to defuse a potentially violent situation. Neurobiological correlates. De-escalation acts on potential aggressive manifestations which are influenced by common neurophysiological underpinnings: these neurobiological correlates involve the HPA axis (hypothalamic-pituitary-adrenal axis) which is strongly associated with stress reaction, leading to a profound cortisol release and activation of neurotransmitter pathways and hormonal systems. Techniques and methods. Structured procedures involving different communication techniques, based on specific clinical needs, are required. De-escalation is intended to interrupt emotional activation, to establish a relationship with the agitated individual, and to provide the opportunity to resettle a functional emotional management. Conclusions. Dysfunctional conducts and aggressive behaviors may arise from mental health issues. Mental health operators should develop communication techniques and de-escalation abilities aimed to effectively manage critical situations and prevent critical interactions or physical aggression

Manejo do paciente com transtornos relacionados ao uso de substância psicoativa na emergência psiquiátrica Management of patients with substance use illnesses in psychiatric emergency department

OBJETIVO: Transtornos por uso de substâncias são prevalentes em setores de emergência gerais e psiquiátricos, atingindo taxas de 28% das ocorrências em prontos-socorros gerais. Todavia, profissionais dos setores de emergência identificam menos que 50% dos casos de problemas relacionados ao álcool. Este artigo visa fornecer base fundamentada em evidências para o tratamento específico a pacientes que preencham os critérios diagnósticos de transtornos por uso de substâncias e que se apresentam ao pronto-socorro em quadros de intoxicação ou abstinência. MÉTODO: Uma revisão sobre o tema foi realizada na base de dados Medline, usando-se os descritores "intoxicação aguda", "abstinência", "álcool", "cocaína", "cannabis", "opioides", "inalantes" e "manejo", tendo o inglês como idioma. RESULTADOS E CONCLUSÃO: O cuidado de pessoas com transtornos por uso de substâncias deve conter: avaliação completa (médica geral e psiquiátrica), tratamento dos quadros diagnosticados (abstinência, intoxicação e quadros clínicos que caracterizem uma emergência), sensibilização do paciente para realizar tratamento, se for necessário, e elaboração de encaminhamento.<br>OBJECTIVE: Substance use disorders are prevalent in emergency departments in medical and psychiatric services, reaching rates of 28% of cases in medical emergency departments. However, professionals in the emergency department identify less than 50% of cases of alcohol-related problems. This article aims to provide evidence-based interventions for the specific treatment to patients who meet diagnostic criteria for substance use disorders and who present to emergency rooms during intoxication or abstinence. METHOD: A literature review was performed on Medline database, using the descriptors "acute intoxication", "withdrawal", "alcohol", "cocaine", "cannabis", "opioid", "inhalant", "management", using English as the language. RESULTS: AND CONCLUSION: The care of persons with substance use disorders should include: comprehensive assessment (medical and psychiatric), treatment of diagnosed disorders (withdrawal, intoxication and clinical features that characterize an emergency), awareness of the patient to carry out treatment if necessary and referral