Tensor coupling and pseudospin symmetry in nuclei

In this work we study the contribution of the isoscalar tensor coupling to the realization of pseudospin symmetry in nuclei. Using realistic values for the tensor coupling strength, we show that this coupling reduces noticeably the pseudospin splittings, especially for single-particle levels near the Fermi surface. By using an energy decomposition of the pseudospin energy splittings, we show that the changes in these splittings come by mainly through the changes induced in the lower radial wave function for the low-lying pseudospin partners, and by changes in the expectation value of the pseudospin-orbit coupling term for surface partners. This allows us to confirm the conclusion already reached in previous studies, namely that the pseudospin symmetry in nuclei is of a dynamical nature.Comment: 11 pages, 5 figures, uses REVTeX macro

What impact did a Paediatric Early Warning system have on emergency admissions to the paediatric intensive care unit? An observational cohort study

Summary The ideology underpinning Paediatric Early Warning systems (PEWs) is that earlier recognition of deteriorating in-patients would improve clinical outcomes. Objective To explore how the introduction of PEWs at a tertiary children's hospital affects emergency admissions to the Paediatric Intensive Care Unit (PICU) and the impact on service delivery. To compare ‘in-house’ emergency admissions to PICU with ‘external’ admissions transferred from District General Hospitals (without PEWs). Method A before-and-after observational study August 2005–July 2006 (pre), August 2006–July 2007 (post) implementation of PEWs at the tertiary children's hospital. Results The median Paediatric Index of Mortality (PIM2) reduced; 0.44 vs 0.60 (p < 0.001). Fewer admissions required invasive ventilation 62.7% vs 75.2% (p = 0.015) for a shorter median duration; four to two days. The median length of PICU stay reduced; five to three days (p = 0.002). There was a non-significant reduction in mortality (p = 0.47). There was no comparable improvement in outcome seen in external emergency admissions to PICU. A 39% reduction in emergency admission total beds days reduced cancellation of major elective surgical cases and refusal of external PICU referrals. Conclusions Following introduction of PEWs at a tertiary children's hospital PIM2 was reduced, patients required less PICU interventions and had a shorter length of stay. PICU service delivery improved

Spin and pseudospin symmetries in the antinucleon spectrum of nuclei

Spin and pseudospin symmetries in the spectra of nucleons and antinucleons are studied in a relativistic mean-field theory with scalar and vector Woods-Saxon potentials, in which the strength of the latter is allowed to change. We observe that, for nucleons and antinucleons, the spin symmetry is of perturbative nature and it is almost an exact symmetry in the physical region for antinucleons. The opposite situation is found in the pseudospin symmetry case, which is better realized for nucleons than for antinucleons, but is of dynamical nature and cannot be viewed in a perturbative way both for nucleons and antinucleons. This is shown by computing the spin-orbit and pseudospin-orbit couplings for selected spin and pseudospin partners in both spectra.Comment: 8 figures, uses revtex 4.1 macro

Resposta a NPK por seringueiras em viveiros nas condicoes do estado de Rondonia.

Procurou-se verificar as resposta a adubacao e definir niveis mais adequados nitrogenio, fosforo e potassio para viveiros de seringueira em Rondonia. Os experimentos foram instalados em alguns solos representativos nos municipios de Porto Velho e Ariquemes: Latossolo Amarelo textura pesada; Ouro Preto D'Oeste: Podzolicos. Os delineamentos foram do tipo fatorial incompleto em blocos ao acaso, com tres repeticoes. Utilizou-se: ureia com 45% de N, superfosfato triplo com 46% de P2O5 e cloreto de potassio com 60% de K2O.Mediu-se o diametro do caule a 5cm do solo consideradosos diametros de 1,2cm para plantas de 7 meses e de 2cm para plantas de 12 meses de idade no calculo da porcentagem de plantas aptas a enxertia. Resultados demonstram que nao ha resposta significativa a adubacao de ate 90kg de N, 250kg P2O5 e 120kg K2O/ha. O manejo adequado da materia organica, calagem e adubacao de testituicao, deverao ser praticas observadas para a garantia da producao de viveiros de seringueira. Sugere-se que enquanto nao se tem determinacao segura de teores exportados palas plantas em diversos locais do Estado, a aplicacao de 1,0g de P2O5 e K2O por planta deve ser suficiente para a produçãobitstream/item/23946/1/11-jul88.pd

Confinement of spinless particles by Coulomb potentials in two-dimensional space-time

The problem of confinement of spinless particles in 1+1 dimensions is approached with a linear potential by considering a mixing of Lorentz vector and scalar couplings. Analytical bound-states solutions are obtained when the scalar coupling is of sufficient intensity compared to the vector coupling.Comment: 14 pages, 2 figure

Associação da seringueira com a cultura do café, no município de Ouro Preto D'Oeste em Rondônia.

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BURNOUT EM TÉCNICOS DE ENFERMAGEM: UMA REVISÃO NARRATIVA

The objective of the study is to describe the risk factors for the development of Burnout Syndrome in nursing technicians according to the literature. It is a study of narrative review of the literature, the articles were searched in the following databases: Virtual Health Library (VHL); Latin American and Caribbean Literature on Health Sciences (LILACS), Scientific Electronic Library Online (SCIELO), and Virtual Health Library (VHL) through the association of Health Sciences Descriptors (DECS) by the Boolean “and”: Burnout, Role of the Nursing Technician, Occupational Risks. The inclusion criteria were: articles published between the years 2010 to 2020. Based on the above criteria, a total of 17 scientific productions were found. These were analyzed through thematic analysis. The results were presented in three categories: 1) historical context of the Burnout syndrome; 2) Burnout syndrome in nursing staff; 3) coping factors of Burnout syndrome in nursing technicians. Concluded that the SB is a public health problem, since it involves the nursing technicians and many health professionals. In this way, the condition "Can and should be treated" as an occupational disease resulting from a series of factors and variables related to the working condition.O objetivo do estudo é descrever os fatores de risco para o desenvolvimento da Síndrome de Burnout em técnicos de enfermagem de acordo com a literatura. Trata-se de um estudo de revisão narrativa da literatura, os artigos foram pesquisados nas seguintes bases de dados: Biblioteca Virtual em Saúde (BVS); Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS), Scientific Eletronic Library Online (SCIELO), e Biblioteca Virtual em Saúde (BVS) através da associação dos Descritores em Ciências da Saúde (DECS)&nbsp; pelo booleano “and”: Burnout, Papel do Técnico em Enfermagem, Riscos Ocupacionais. Teve como critérios de inclusão: artigos publicados entre os anos de 2010 a 2020. Com base nos critérios acima, foram encontrados um total de 17 produções científicas. Essas foram analisadas por meio da análise temática. Os resultados foram apresentados em três categorias: 1) contexto histórico da síndrome de Burnout; 2) síndrome de Burnout nos técnicos de enfermagem; 3) fatores de enfrentamento da síndrome de Burnout nos técnicos de enfermagem. Concluísse que a SB é um problema de saúde pública, uma vez que acomete os técnicos de enfermagem e muitos profissionais da área de saúde. Desta forma, o agravo “Pode e deve ser tratada” como uma doença ocupacional resultante de uma série de fatores e variáveis relacionadas com a condição de trabalho

Eficiência de herbicidas no controle de gramíneas em seringueira.

Em Rondônia, capim-amargoso (Digitaria insularis (L.) Mez ex Ekman), capim-colchão (Digitaria horizontalis Willd.), capim-milhã (Digitaria ciliaris (Retz.) Koel), capim pé-de-galinha (Eleusine indica, (L.) Gaertn) e capim rabo-de-burro (Andropogon bicornis L.), são ervas daninhas muito freqüentes em cultivos de seringueira, o que justifica a realização de trabalhos específicos para seu controle. O objetivo deste trabalho foi avaliar e comparar nas condições de campo, a eficácia de três herbicidas pós-emergentes no controle de gramíneas importantes em cultivo de seringueira em Rondônia.bitstream/item/77101/1/FOL-7728-0001.pd

Uso de herbicidas em viveiro de seringueira em Ouro Preto do Oeste, RO.

Este trabalho tem por objetivo testar a eficácia de cinco herbicidas pré-emergentes, no controle de plantas dainhas em viveiros de seringueira, nas condições edafoclimáticasde Ouro Preto do Oeste, RO.bitstream/item/67391/1/CPAF-RO-DOCUMENTOS-29-USO-DE-HERBICIDAS-EM-VIVEIRO-DE-SERINGUEIRA-EM-OURO-PRETO-DO-OESTE-RO-FL-11.pd