Search for Anomalous Top-Quark Couplings with the D0 Detector

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

Search for a Higgs boson in the decay channel H -> ZZ((*)) -> q(q)over-barl(-)l(+) in pp collisions at root s=7 TeV

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

Production of clavulanic acid and cephamycin C by Streptomyces clavuligerus under different fed-batch conditions

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

Use of vitamin D to reduce lameness in broilers reared in harsh environments

In tropical poultry-producing countries, poultry houses usually have little environmental control. This study investigated the effect of dietary vitamin D on the incidence of leg abnormalities of a fast-growing broiler strain reared under harsh conditions. In this study, 300 one-day-old male broilers were distributed in two treatments with three replicates of 50 birds each. One group was fed a placebo and the other group was fed 25-hydroxycholecalciferol (25-OH-D3) in a soluble form. The environmental variables were weekly recorded during until birds were 49 days old. Birds were weekly gait scored, and their walking speed and vertical force while walking were assessed. Post-mortem examination was performed and skeletal lesions were assessed. Control birds presented more leg problems than those that ingested 25-OH-D3. These results suggest that dietary vitamin D is effective in decreasing the severity of lameness by reducing tibial dyschondroplasia and other leg abnormalities.

Delayed results of treatment of paracoccidioidomycosis with amphotericin B plus sulfamides versus amphotericin B alone

Os Autores avaliam tardiamente dois grupos de doentes de paracoccidioidomicose. Ambos foram tratados com anfotericina B, tendo um deles feito tratamento de manutenção com sulfamídicos. Através de análises estatísticas comprovam a maior eficácia do tratamento, quando se faz a manutenção com sulfamídicos.

Avaliação do capim-elefante (Pennisetum purpureum Schum.) cultivar taiwan A-148, ensilado com diferentes técnicas de redução de umidade

O objetivo deste trabalho foi avaliar o efeito de diferentes técnicas de redução de umidade sobre a composição química, digestibilidade in vitro da matéria seca (DIVMS) e degradação ruminal da matéria seca da silagem de capim-elefante (Pennisetum purpureum Schum.) cv. Taiwan A-148. Os tratamentos (A, Controle; B, 20,0; C, 30,0; D, 40,0% de sabugo de milho; E, emurchecimento por 12 horas; F, emurchecimento por 24 horas; e G, esmagamento + emurchecimento por 24 horas) foram distribuídos em delineamento inteiramente casualizado com três repetições. Os tratamentos da silagem B e E não foram eficientes em reduzir a umidade excessiva da forragem. O emurchecimento por 24 horas aumentou o teor de MS, sem influir no teor de PB e na DIVMS. Os tratamentos C e D favoreceram o desenvolvimento da população de clostrídeos, aumentaram a concentração de N-NH3 e reduziram a concentração de ácido lático e a DIVMS das silagens. O tratamento G aumentou o teor de MS e reduziu a concentração de N-NH3 e DIVMS. A adiçao de sabugo de milho (tratamentos B, C e D) reduziu a degradação ruminal da MS das silagens. O sabugo de milho reduziu a umidade, mas apresentou efeitos negativos na qualidade da silagem, enquanto o esmagamento e/ou emurchecimento foram procedimentos que mostraram bons resultados em relação à conservação do material ensilado.

Phenological aspects and variation of chlorophylls a and b contents in caryocar-brasiliense camb

There were detected variations of chlorophylls a and b during the senescence leaves period of Caryocar brasiliense Camb in the Corumbatai cerrado vegetation, State of São Paulo. The highest peak of total chlorophylls a and b contents was registered after the maximum leaves expansion, while the lowest peak it was obtained at leaves abcision. The chlorophylls a and b variations can be explained as a function of a chlorophyll a variation content. The phenological events studied (flowering and fruiting time, leaf fall and sprouting) showed a marked periodicity during the year. Flowering and fruiting time have a similar peak both in the wet season (september to february). Leaves fall occurred in the dry season with the peak in August.

Approximate expression for the energy of a D-dimensional anharmonic oscillator

An approximate expression is constructed for the energy of an anharmonic potential with centrifugal barrier. In order to obtain such an analytical expression, the quasi-exact solvability is used and then a fitting of these exact solutions is done.

Purification and partial characterization of cathepsin D from porcine (Sus scrofa) liver using affinity chromatography

Cathepsin D, a lysosomal aspartic protease, has been purified from porcine liver using a combination of pepstatin-A agarose and Affi-Gel Blue affinity chromatography, followed by size-exclusion chromatography. The purified protein consists of two polypeptide chains of 15 and 30 kDa, and has an isoelectric point of 6.8. Porcine liver cathepsin D has maximum activity at pH 2.5-3.0 as determined by its activity against hemoglobin, with a K-cat of 14.3 s(-1) and a k(cat)/K-M of 2.70 x 10(6) s(-1) M-1 as determined by the hydrolysis of a fluorogenic peptide substrate.

Studies on the respiration rate of free and immobilized cells of Cephalosporium acremonium in cephalosporin C production

Bioprocesses using filamentous fungi immobilized in inert supports present many advantages when compared to conventional free cell processes. However, assessment of the real advantages of the unconventional process demands a rigorous study of the limitations to diffusional mass transfer of the reagents, especially concerning oxygen. In this work, a comparative study was carried out on the cephalosporin C production process in defined medium containing glucose and sucrose as main carbon and energy sources, by free and immobilized cells of Cephalosporium acremonium ATCC 48272 in calcium alginate gel beads containing alumina. The effective diffusivity of oxygen through the gel beads and the effectiveness factors related to the respiration rate of the microorganism were determined experimentally. By applying Monod kinetics, the respiration kinetics parameters were experimentally determined in independent experiments in a complete production medium. The effectiveness factor experimental values presented good agreement with the theoretical values of the approximated zero-order effectiveness factor, considering the dead core model. Furthermore, experimental results obtained with immobilized cells in a 1.7-L tower bioreactor were compared with those obtained in 5-L conventional fermenter with free cells. It could be concluded that it is possible to attain rather high production rates working with relatively large diameter gel beads (ca. 2.5 mm) and sucrose consumption-based productivity was remarkably higher with immobilized cells, i.e., 0.33 gCPC/kg sucrose/h against 0.24 gCPC/kg sucrose/h in the aerated stirred tank bioreactor process. (C) 1999 John Wiley & Sons, Inc.

Synthesis of the stationary phase IS-Anionic (internal surface-anionic) for extraction of ochratoxin A and B from samples of beers

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

Scaling in the BCS to Bose crossover problem in different partial waves

The BCS superconductivity to Bose condensation crossover problem is studied in two dimensions in S, P, and D waves, for a simple anisotropic pairing, with a finite-range separable potential at zero temperature. The gap parameter and the chemical potential as a function of Cooper-pair binding B c exhibit universal scaling. In the BCS limit the results for coherence length ξ and the critical temperature T c are appropriate for highT c cuprate superconductors and also exhibit universal scaling as a function of B c.