Let D = A + λB be the para-Blaschke tensor of the immersion x, where λ is a constant, A and B are the Blaschke tensor and the Möbius second fundamental form of x. A hypersurface x : M 7→ S(1) in the unit sphere S(1) without umbilical points is called a para-Blaschke isoparametric hypersurface if the Möbius form Φ vanishes identically and all of its para-Blaschke eigenvalues are constants. In [1...

Resumen-En este trabajo presentamos una aproximación para el desarrollo de Bases de Datos (BD) Objeto-Relacionales (OR) en el marco de MIDAS, una metodología dirigida por modelos para el desarrollo de Sistemas de Información Web. En nuestra propuesta, el Modelo Independiente de la Plataforma (PIM, Platform Independent Model) será el modelo conceptual de datos y a partir de éste obtendremos el M...

background : wilson disease (wd) is an autosomal recessive progressive degeneration of hepatolenticular tissue that causes the increase of copper deposition in the liver and other organs, with resultant hepatic, neurologic and psychological manifestations. wd is fatal if left untreated. the aim of the current study was to evaluate the clinical and para-clinical findings in children with wd in s...

results the results showed that the pcp degradation increased with an increase in zvi dosage from 0.056 to 1.4 g/l, an increase in persulfate concentration from 2.5 to 15.0 mm/l, and an increase in zvi to ps molar ratio from 0.1 to 2.5. the optimal initial ph for pcp removal was 5.0 and the maximum removal efficiency of 70% was achieved within 120 minutes. moreover, the zvi catalyst was reused ...

background: para-nonylphenol (p-np) is able to induce malformations in male reproductive system. objective: the aim of this study was to investigate the preventing role of vitamin e (vit.e) on sperm parameters and reproductive hormones in developing rats. materials and methods: pregnant rats were divided into 4 groups: control p-np vit.e and p-np+vit.e. treatments were performed on day 7 of ges...

A química atmosférica dos álcoois, os quais são largamente empregados como combustíveis de veículos leves (como o etanol no Brasil) e solventes industriais, foi revista com o foco centralizado em seus aspectos de cinética e mecanismos de reação. A oxidação dos álcoois na atmosfera envolve sua reação com radicais hidroxil (OH). São apresentadas constantes de velocidade para a reação álcool-OH de...

Objetivo. Descrever e analisar ações empreendidas em quatro centros urbanos para fortalecer a estratégia saúde da família (ESF) no Brasil. Métodos. Foram realizados estudos de caso em Aracaju, Belo Horizonte, Florianópolis e Vitória com base em entrevistas semiestruturadas com gestores. Além disso, foi realizado um estudo transversal com questionários aplicados a amostras de profissionais e usu...

The ortho to para conversion of water ion, H2O(+), due to the interaction between the magnetic moments of the unpaired electron and protons has been theoretically studied to calculate the spontaneous emission lifetime between the ortho- and para-levels. The electron spin-nuclear spin interaction term, Tab(SaΔIb + SbΔIa) mixes ortho (I = 1) and para (I = 0) levels to cause the "forbidden" ortho ...

The partition site, parS, promotes accurate segregation of the replicated P1 plasmid to daughter cells when the P1-encoded ParA and ParB proteins are supplied. The parS site was inserted into the Escherichia coli chromosome between the promoter and the structural gene for beta-galactosidase, lacZ. There was little interference with lacZ expression when ParA and ParB were supplied in trans. Howe...

Um eletrodo de pasta de carbono modificado com o polímero cloreto de 3-n-propil-4-picolina silsesquioxano foi testado como sensor para isômeros do di-hidroxibenzeno. O sensor apresentou desempenho excelente para a determinação eletroanalítica simultânea de hidroquinona e catecol. As curvas de calibração obtidas foram lineares na faixa de concentração de 10,0 a 450,0 μmol L para a hidroquinona (...