Relativistic particle dynamics in D = 2+1

We propose a SUSY variant of the action for a massless spinning particles via the inclusion of twistor variables. The action is constructed to be invariant under SUSY transformations and τ-reparametrizations even when an interaction field is including. The constraint analysis is achieved and the equations of motion are derived. The commutation relations obtained for the commuting spinor variables λα show that the particle states have fractional statistics and spin. At once we introduce a possible massive term for the non-interacting model. © SISSA 2006.

Patulina: Incidência e controle em derivados de maçã

The patulin, (4hydroxy-4furo[3,2-c]pyran(6H)-1), is a thermal resistent mycotoxin produced by several species of fungi are common in plants, mainly in derivatives and apples. Studies on the toxicity in animals have shown that mycotoxin has character teratogenic, and carcinogenic in mice immunotoxic. Its biosynthesis is well understood involving a series of reactions of condensation and oxiredução, many catalyzed by enzymes. The danger of contamination of food with patulin, warning about the need for a more rigorous control. Recent research aimed their removal and degradation as well as increase the sensitivity of the tests, making them faster and at less cost. The removal of patulin of food is made with composite adsorbents, with inconvenience to diminish the quality of the product by adsorbs other components desirable. The degradation is made with sulfur compounds, which are not allowed in food in many countries, and the growth of yeasts, such as the production of cider. Many yeasts have resistance against patulin and produce compounds capable degrade it. Here, we reviewed research on patulin with emphasis on its influence in food industry, incidence of patulin in apple juice and other foods, maximum permissible concentrations, health effects, biosynthesis, removal, degradation and most widely used methods for its detection and quantification.

Impact of the length of vitamin D deficiency on cardiac remodeling.

This study was aimed to evaluate the influence of vitamin D (VD) deficiency on cardiac metabolism, morphology, and function. Thus, we investigated the relationship of these changes with the length of the nutrient restriction. Male weanling Wistar rats were allocated into 4 groups: C2 (n=24), animals were fed an AIN-93G diet with 1000 IU VD/kg of chow and were kept under fluorescent light for 2 months; D2 (n=22), animals were fed a VD-deficient AIN-93G diet and were kept under incandescent light for 2 months; C4 (n=21) animals were kept in the same conditions of C2 for 4 months; and D4 (n=23) animals were kept in the same conditions of D2 for 4 months. Biochemical analyses showed lower β-hydroxyacyl coenzyme-A dehydrogenase activity and higher lactate dehydrogenase activity in VD-deficient animals. Furthermore, VD deficiency was related to increased cytokines release, oxidative stress, apoptosis, and fibrosis. Echocardiographic data showed left ventricular hypertrophy and lower fractional shortening and ejection fraction in VD-deficient animals. Difference became evident in the lactate dehydrogenase activity, left ventricular weight, right ventricle weight, and left ventricular mass after 4 months of VD deficiency. Our data indicate that VD deficiency is associated with energetic metabolic changes, cardiac inflammation, oxidative stress, fibrosis and apoptosis, cardiac hypertrophy, left chambers alterations, and systolic dysfunction. Furthermore, length of the restriction influenced these cardiac changes.

Avaliação das estruturas químicas derivadas de diaminas do ferroceno no metabolismo oxidativo em cepas de Trypanosoma cruzi

Pós-graduação em Biociências e Biotecnologia Aplicadas à Farmácia - FCFAR

Polinômios fracionários em modelos de regressão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudos sobre a síntese de piperidinas funcionalizadas através de reações pentacomponentes, utilizando compostos de nióbio como catalisadores

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Síntese de sucroésteres derivados de ácidos piridínicos (ácido nicotínico, isonicotínico e pícolínico) e avaliação de suas atividades antimicrobianas

Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE

Influência do diabetes mellitus no coração de ratos senescentes espontaneamente hipertensos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Indicadores ecodopplercardiográficos de função cardíaca em cães com degeneração mixomatosa da valva mitral e suas correlações com valores séricos das interleucinas 1β e 4

Pós-graduação em Medicina Veterinária - FCAV

A influência dos elementos traços , (B, Cu, Mn, Mo e Zn) na produção de ramnolipídios por pseudomonas aeruginosa LBI

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Síntese, caracterização e estudo físico-químico das nanopartículas formadas pela interação de amino derivados de quitosana com DNA

Pós-graduação em Química - IBILCE

Complexos de inclusão de anfotericina B com derivados de ciclodextrinas e sua incorporação em microemulsões lipídicas biocompatíveis

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Purificação e caracterização bioquímica da α-glicosidase termoestável produzida por Thermoascus aurantiacus CBMAI 756

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Produção de ramnolipídios por mutantes de Pseudomonas aeruginosa LBI

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Das neuroses de transferência às neuroses narcísicas: contribuições aos fundamentos da teoria freudiana da melancolia

Pós-graduação em Psicologia - FCLAS