Lymphocyte population in the granulomatous lesions of wild-boars (Sus scrofa) suspected of tuberculosis

Só está disponível o resumoLymphocyte population in the granulomatous lesions of wild-boars (Sus scrofa) suspected of tuberculosis

Tannic acid is not mutagenic in germ cells but weakly genotoxic in somatic cells of Drosophila melanogaster

Tannic acid (TA) was tested for genotoxic activity in three different assays (1-3) in Drosophila melanogaster by feeding of larvae or adult flies. TA did not induce sex-linked recessive lethals (1) nor sex-chromosome loss, mosaicism or non-disjunction (2) in male germ cells. In the wing somatic mutation and recombination test (SMART) (3) TA was found to be toxic for larvae of the high bioactivation cross and produced a weak positive response. These results suggest that this compound, when administered orally to larvae or adults of D.melanogaster, is not mutagenic and clastogenic in male germ cells, but weakly genotoxic in somatic cells of the wing imaginal dis

Granulomatous lesions and Mycobacterium avium subsp. paratuberculosis in portuguese wild boars (Sus scrofa)

Granulomatous lesions and Mycobacterium avium subsp. paratuberculosis in portuguese wild boars (Sus scrofa)

Evidences of the Cerium Oxide-Catalysed DPF Regeneration in a Real Diesel Engine Exhaust

The active phase Ce0.5Pr0.5O2 has been loaded on commercial substrates (SiC DPF and cordierite honeycomb monolith) to perform DPF regeneration experiments in the exhaust of a diesel engine. Also, a powder sample has been prepared to carry out soot combustion experiments at laboratory. Experiments performed in the real diesel exhaust demonstrated the catalytic activity of the Ce–Pr mixed oxide for the combustion of soot, lowering the DPF regeneration temperature with regard to a counterpart catalyst-free DPF. The temperature for active regeneration of the Ce0.5Pr0.5O2-containing DPF when the soot content is low is in the range of 500–550 °C. When the Ce0.5Pr0.5O2-containing DPF is saturated with a high amount of soot, pressure drop and soot load at the filter reach equilibrium at around 360 °C under steady state engine operation due to passive regeneration. The uncoated DPF reached this equilibrium at around 440 °C. Comparing results at real exhaust with those at laboratory allow concluding that the Ce0.5Pr0.5O2-catalysed soot combustion in the real exhaust is not based on the NO2-assisted mechanism but is most likely occurring by the active oxygen-based mechanism.The authors thank the financial support of Generalitat Valenciana (Project Prometeo 2009/047), Spanish Ministry of Science and Innovation (project CIT-420000-2009-48) and EU (FEDER funding)

Granulomatous lesions and Mycobacterium avium subsp. paratuberculosis in portuguese wild boars (Sus scrofa)

Granulomatous lesions and Mycobacterium avium subsp. paratuberculosis in portuguese wild boars (Sus scrofa)

Probing Interchain Interactions In Emissive Blends Of Poly[2-methoxy-5- (2′-ethylhexyloxy)-p-phenylenevinylene] With Polystyrene And Poly(styrene-co-2-ethylhexyl Acrylate) By Fluorescence Spectroscopy

We present dynamic and static photoluminescence studies on polymer blends of conjugated poly[2-methoxy-5-(2′-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) with polystyrene-co-1-pyrenyl methyl methacrylate and its copolymer poly(styrene-co-2-ethylhexyl acrylate-co-1-pyrenylmethyl methacrylate) (with 9 mol% and 19 mol% of 2-ethylhexyl acrylate units and 0.06 mol% of 1-pyrenyl). Pyrenyl-labeled polystyrene and its copolymers were synthesized by emulsion polymerization and characterized by 13C and 1H-NMR, FTIR, GPC, DSC, and UV-Vis. Spin-coating films of the blends were prepared from chloroform solutions with 0.1, 0.5, 1.0, and 5.0 wt% of MEH-PPV. The miscibility of these systems was studied by non-radiative energy transfer processes between the 1-pyrenyl moieties (the energy donor) and MEH-PPV (the energy acceptor). The relative emission intensities and the fluorescence lifetimes of the donor showed that the miscibility of MEH-PPV and the copolymers is greater than that of MEH-PPV and polystyrene and this was confirmed by epifluorescence optical microscopy and scanning electron microscopy. ©2006 Sociedade Brasileira de Química.17510001013Miyata, S., Nalwa, H.S., (1998) Organic Electroluminescence Materials and Devices, , Gordon and Breach: TokyoLiu, Y., Liu, M.S., Li, X.C., Jen, A.K.Y., (1998) Chem. Mater., 10, p. 3301Lee, T.W., Park, O.O., (2000) Adv. Mater., 12, p. 801Cossiello, R.F., Kowalski, E., Rodrigues, P.C., Akcelrud, L., Bloise, A.C., De Azevedo, E.R., Bonagamba, T.J., Atvars, T.D.Z., (2005) Macromolecules, 38, p. 925Kim, J., Swager, M., (2001) Nature, 411, p. 1030Nguyen, T.-Q., Schwartz, B.J., Schaller, R.D., Johnson, J.C., Haber, L.H., Saykally, R.J., (2001) J. Phys. Chem. B, 105, p. 5153Nguyen, T.-Q., Doan, V., Schwartz, B.J., (1999) J. Chem. Phys., 110, p. 4068Nguyen, T.-Q., Martini, I.B., Liu, J., Schwartz, B.J., (2000) J. Phys. Chem. B, 104, p. 237Nguyen, T.-Q., Kwong, R.C., Thompson, M.E., Schwartz, B.J., (2000) Appl. Phys. Lett., 76, p. 2454Nguyen, T.-Q., Yee, R.H., Schwartz, B.J., (2000) J. Photochem. Photobiol. A, 144, p. 21Greenhan, N.C., Samuel, I.D.W., Hayes, G.R., Phillips, R.T., Kessener, Y.A.R.R., Moratti, S.C., Holmes, A.B., Friend, R.H., (1995) Chem. Phys. Lett., 241, p. 89Yan, M., Rothberg, L.J., Papadimitrakopoulos, F., Galvin, M.E., Miller, T.M., (1994) Phys. Rev. Lett., 72, p. 1104Chen, S.-H., Su, A.-C., Huang, Y.F., Su, C.-H., Peng, G.-Y., Chen, S.-A., (2002) Macromolecules, 35, p. 4229Collison, C.J., Rothberg, L.J., Treemaneekarn, V., Li, Y., (2001) Macromolecules, 34, p. 2346Shi, Y., Liu, J., Yang, Y., (2000) J. Appl. Phys., 87, p. 4254Jakubiak, R., Collison, C.J., Wan, W.C., Rothberg, L.J., Hsieh, B.R., (1999) J. Phys. Chem. A, 103, p. 2394Wei, P.K., Hsu, J.H., Fann, W.S., (1999) Synth. Met., 102, p. 1209Hsu, J.H., Wei, P.K., Fann, W.S., Chuang, K.R., Chen, A.S., (1998) Ultramicroscopy, 71, p. 263Lee, T.-W., Park, O.O., Cho, H.N., Hong, J.-M., Kim, C.Y., Kim, Y.C., (2001) Synth. Met., 122, p. 437Shim, H.K., Kang, I.N., Jang, M.S., Zyung, T., Jung, S.D., (1997) Macromolecules, 30, p. 7749Halls, J.J.M., Walsh, C.A., Greenham, N.C., Marseglia, E.A., Friend, R.H., Maratti, S.C., Holmes, A.B., (1995) Nature, 376, p. 498Yu, G., Gao, J., Hummelen, J.C., Wudl, F., Heeger, A.J., (1995) Science, 270, p. 1789Granström, M., Inganäs, O., (1995) Adv. Mater., 7, p. 1012He, G., Li, Y., Liu, J., Yang, Y., (2002) Appl. Phys. Lett., 80, p. 4247Sartori, S.S., De Feyter, S., Hofkens, J., Van Der Auweraer, M., De Schryver, F., Brunner, K., Hofstraat, J.W., (2003) Macromolecules, 36, p. 500Ding, L., Karasz, F.E., Lin, Z., Liao, M.Z.L., Pang, Y., (2001) Macromolecules, 34, p. 9183Iyengar, N.A., Harrison, B., Duran, R.S., Schanze, K.S., Reynolds, J.R., (2003) Macromolecules, 36, p. 8985Bjorklund, T.G., Lim, S.-H., Bardeen, C.J., (2004) Synth. Met., 142, p. 195Blumstengel, S., Sokolik, I., Dorsinville, R., Voloschenko, D., He, M., Lavrentovich, O., Chein, L.C., (1999) Synth. Met., 99, p. 85Nishino, H., Yu, G., Heeger, A.J., Chen, T.A., Rieke, R.D., (1995) Synth. Met., 68, p. 243Hu, D., Yu, J., Barbara, P.F., (1999) J. Am. Chem. Soc., 121, p. 6936Hu, D., Yu, J., Wong, K., Bagchi, B., Rossky, P.J., Barbara, P.F., (2000) Nature (London), 405, p. 1030Crenshaw, B.R., Weder, C., (2003) Chem. Mat., 15, p. 4717Lee, J.S., Kim, C.H., Yu, J.-W., Kim, J.K., Kim, D.Y., Song, N.W., Kim, C.Y., (2004) J. Polym. Sci. A: Polym. Chem., 42, p. 557Palilis, L.C., Lidzey, D.G., Redecker, M., Bradley, D.D.C., Inbasekaram, M., Woo, E.P., Wu, W.W., (2000) Synth. Met., 111, p. 159Granström, M., Inganäs, O., (1996) Appl. Phys. Lett., 68, p. 147Chao, C.S., Whang, W.T., Chuang, K.R., (2000) J. Polym. Res., 7, p. 175Babel, A., Jenekhe, S.A., (2004) Macromolecules, 37, p. 9835Utracki, L.A., (1989) Polymer Alloys and Blends: Thermodynamics and Rheology, , Hanser: MunichMuller, G., Schwahn, D., Eckerlebe, H., Rieger, J., Springer, T., (1996) J. Chem. Phys., 104, p. 5326Hack, T., Abetz, V., Stamm, M., Schubert, D.W., Mortensen, K., Siol, W., (1996) Colloid Polym. Sci., 274, p. 350Alam, M.M., Tonzola, C.J., Jenekhe, A.S., (2003) Macromolecules, 36, p. 6577Yu, J.-W., Kim, J.K., Cho, H.N., Kim, D.Y., Kim, C.Y., Song, N.W., Kim, D., (2000) Macromolecules, 33, p. 5443Anni, M., Gigli, G., Paladini, V., Cingolani, R., Barbarella, G., Favaretto, L., Sotgiu, G., Zambianchi, M., (2000) Appl. Phys. Lett., 77, p. 2458Dogariu, A., Gupta, R., Heeger, A.J., Wang, H., (1999) Synth. Met., 100, p. 95Birks, J.B., (1970) Photophysics of Aromatic Molecules, , Wiley-Interscience: New YorkBerlman, I.B., (1973) Energy Transfer Parameters of Aromatic Compounds, , Academic Press: New YorkAtvars, T.D.Z., Esteban, I., Illera, B., Serrano, B., Vigil, M.R., Piérola, I.F., (1997) J. Lumin., 72, p. 467De Andrade, M.L., Atvars, T.D.Z., (2004) J. Phys. Chem. B, 108, p. 3975De Andrade, M.L., Atvars, T.D.Z., (2004) Macromolecules, 37, p. 9096De Andrade, M.L., Atvars, T.D.Z., (2004) Macromolecules, 37, p. 9626Yamaki, S.B., Atvars, T.D.Z., Weiss, R.G., (2002) Photochem. Photobiol. Sci., 1, p. 649Martins, T.D., Yamaki, S.B., Prado, E.A., Atvars, T.D.Z., (2003) J. Photochem. Photobiol. A: Chem., 156, p. 91Danko, M., Hrdlovic, P., Borsig, E., (2001) J. Macromol. Sci.-Pure Appl. Chem., A38, p. 467Zimerman, O.E., Weiss, R.G., (1998) J. Phys. Chem. A, 102, p. 5364Morris, J.V., Mahaney, M.A., Huber, J.R., (1976) J. Phys. Chem., 80, p. 969(1975) Polymer Handbook, , Brandrup, J.Immergut, E. H.Dowell, W. Mc., eds.Wiley-Interscience: New YorkCossiello, R.F., Akcelrud, L., Atvars, T.D.Z., (2005) J. Braz. Chem. Soc., 16, p. 74Valeur, B., (2002) Molecular Fluorescence: Principles and Applications, , Wiley-VCH: WeinheimBagnich, C.I., Bässler, D.N., Scherf, U., (2004) Chem. Phys., 299, p. 11Vanden Bout, D.A., Yip, W.-T., Hu, D., Fu, D.K., Swager, T.M., Barbara, P.F., (1997) Science, 277, p. 1074Paul, D.R., Barlow, J.W., (1984) Polymer, 25, p. 487Woo, E.M., Mandal, T.K., Chang, L.L., (2000) Macromolecules, 33, p. 418

mBISON: Finding miRNA target over-representation in gene lists from ChIP-sequencing data

BACKGROUND: Over-representation of predicted miRNA targets in sets of genes regulated by a given transcription factor (e.g. as defined by ChIP-sequencing experiments) helps to identify biologically relevant miRNA targets and is useful to get insight into post-transcriptional regulation. FINDINGS: To facilitate the application of this approach we have created the mBISON web-application. mBISON calculates the significance of over-representation of miRNA targets in a given non-ranked gene set. The gene set can be specified either by a list of genes or by one or more ChIP-seq datasets followed by a user-defined peak-gene association procedure. mBISON is based on predictions from TargetScan and uses a randomization step to calculate False-Discovery-Rates for each miRNA, including a correction for gene set specific properties such as 3'UTR length. The tool can be accessed from the following web-resource: http://cbdm.mdc-berlin.de/~mgebhardt/cgi-bin/mbison/home . CONCLUSION: mBISON is a web-application that helps to extract functional information about miRNAs from gene lists, which is in contrast to comparable applications easy to use by everyone and can be applied on ChIP-seq data directly

Green manure in coffee systems in the region of Zona da Mata, Minas Gerais: characteristics and kinetics of carbon and nitrogen mineralization.

The use of green manure may contribute to reduce soil erosion and increase the soil organic matter content and N availability in coffee plantations in the Zona da Mata, State of Minas Gerais, in Southeastern Brazil. The potential of four legumes (A. pintoi, C. mucunoides, S. aterrimum and S. guianensis)to produce above-ground biomass, accumulate nutrients and mineralize N was studied in two coffee plantations of subsistence farmers under different climate conditions. The biomass production of C. mucunoides was influenced by the shade of the coffee plantation.C. mucunoides tended to mineralize more N than the other legumes due to the low polyphenol content and polyphenol/N ratio. In the first year, the crop establishment of A. pintoi in the area took longer than of the other legumes, resulting in lower biomass production and N2 fixation. In the long term, cellulose was the main factor controlling N mineralization. The biochemical characteristics, nutrient accumulation and biomass production of the legumes were greatly influenced by the altitude and position of the area relative to the sun

Resolution of dark matter problem in f(T) gravity

In this paper, we attempt to resolve the dark matter problem in f(T) gravity. Specifically, from our model we successfully obtain the flat rotation curves of galaxies containing dark matter. Further, we obtain the density profile of dark matter in galaxies. Comparison of our analytical results shows that our torsion-based toy model for dark matter is in good agreement with empirical data-based models. It shows that we can address the dark matter as an effect of torsion of the space.Comment: 14 pages, 3 figure