Uso de ultrassom na conservação de alimentos.

bitstream/item/29398/1/2010-302.pd

Use of dialkyldithiocarbamato complexes of bismuth(III) for the preparation of nano- and microsized Bi2S3 particles and the X-ray crystal structures of [Bi{S2CN(CH3)(C6H13)}(3)] and [Bi{S2CN(CH3)(C6H13)}(3)(C12H8N2)]

A range of bismuth(III) dithiocarbamato complexes were prepared and characterized. The X-ray crystal structures of the compounds [Bi{S2CN(CH3)(C6H13)}3] (1) and [Bi{S2CN(CH3)- (C6H13)}3(C12H8N2)] (2) are reported. The preparation of Bi2S3 particulates using a wet chemical method and involving the thermalysis of Bi(III) dialkyldithiocarbamato complexes is described. The influence of several experimental parameters on the optical and morphological properties of the Bi2S3 powders was investigated. Nanosized Bi2S3 colloids were obtained having long-term stability and showing a blue shift on the optical band edge; the presence of particles exhibiting quantum size effects is discussed. Morphological welldefined Bi2S3 particles were obtained in which the fiber-type morphology is prevalent.FCT - POCTI/1999/CTM/ 3545

Frutas e legumes cristalizados: opção para redução de perdas e ganhos extras.

bitstream/item/29395/1/2010-298.pd

Representações sociais e expressão tipográfica : criação de logótipos para empresas de calçado

O presente artigo tem como foco a relação entre representações sociais e expressão tipográfica na construção de marcas compostas apenas por logotipo. Seu objetivo norteador é conhecer os processos simbólicos que ocorrem na interação do público com as marcas, a fim de, a partir da análise de logotipos, do ponto de vista do leitor, identificar as conotações legíveis nas características formais da tipografia que os compõe, e então criar efetivamente uma marca para empresa de calçados que tem como público-alvo as classes B e C.ABSTRACT: This Article focuses on the relationship between the social representations and the typographic expression in building brands without symbol. The guiding objective is to know the symbolic process that occurs on the public interaction with the brands in order to create a footwear brand whose audience -target are classes B and C. For it, logos will be analyzed, from the point of view of the reader, to identify the legible connotation in the formal characteristics of the typography that compose brands.info:eu-repo/semantics/publishedVersio

Biophilic Playspace Design: Bringing Together Children and Nature in Urban Honolulu.

D.Arch. Thesis. University of Hawaiʻi at Mānoa 2017

Dynamic critical behaviour in Ising spin glasses

The critical dynamics of Ising spin glasses with Bimodal, Gaussian, and Laplacian interaction distributions are studied numerically in dimensions 3 and 4. The data demonstrate that in both dimensions the critical dynamic exponent $z_{\rm c}$, the non-equilibrium autocorrelation decay exponent $\lambda_c/z_{\rm c}$, and the critical fluctuation-dissipation ratio $X_{\infty}$ all vary strongly and systematically with the form of the interaction distribution.Comment: 8 pages, 4 figures, version to appear in Phys. Rev.

Spin and Charge Josephson effects between non-uniform superconductors with coexisting helimagnetic order

We consider the spin and charge Josephson current between two non-uniform Fulde-Ferrel-Larkin-Ovchinnikov superconductors with helimagnetic order. We demonstrate that the presence of the helimagnetic phase generates a spin Josephson effect and leads to additional contributions to both single-particle and Josephson charge current. It is shown that for such systems the AC effect differs more radically from the DC effect than in the case of a BCS superconductor with helimagnetic order considered earlier in the literature [M. L. Kuli\'c and I. M. Kuli\'c, Phys. Rev. B {\bf 63}, 104503 (2001)] where a spin Josephson current has also been found. In our system the most interesting effect occurs in the presence of an external magnetic field and in absence of voltage, where we show that the charge Josephson current can be tuned to zero while the spin Josephson current is non-vanishing. This provides a well controlled mechanism to generate a spin supercurrent in absence of charge currents.Comment: final versio

About Photo-damage Of Human Hair

This paper reviews the current knowledge about human hair photodamage and the photodegradation mechanisms proposed in the literature. It is shown that there are still a number of questions without answer regarding this issue. For example, a better understanding of the hair structural changes caused by different radiation wavelengths is still lacking. We also find controversies about the effects of sun exposure on different hair types. Explanations to these questions are frequently sustained on the amount and type of melanin of each hair, but factors such as the absence of knowledge of melanin structure and of established methodologies to use in human hair studies make it difficult to reach a general agreement on these issues. © The Royal Society of Chemistry and Owner Societies 2006.52165169Hoting, E., Zimmermann, M., Hocker, H., Photochemical alterations on human hair. Part II. Analysis of melanin (1995) J. Soc. Cosmet. Chem., 46, pp. 181-190Pande, C.M., Jachowicz, J., Hair photodamage: Measurement and prevention (1998) J. Soc. Cosmet. Chem., 49, pp. 309-320Ultraviolet Radiation (1994) Environmental Health Criteria 160, , World Health OrganizationOzeki, Ito, S., Wakamatsu, K., Chemical Characterization of melanins in sheep wool and human hair (1996) Pigm. Cell Res., 9 (2), pp. 51-57Borges, C.R., Roberts, J.C., Wilkins, D.G., Rollins, D.E., Relationship of melanin degradation products to actual melanin content. Application to human hair (2001) Anal. Biochem., 290, pp. 116-125Borovansky, J., Elleder, M., Melanosome Degradation: Fact or Fiction (2003) Pigm. Cell Res., 16, pp. 280-286Pfau, A., Hössel, P., Vogt, S., Sander, R., Schrepp, W., The interaction of cationic polymers with human hair (1997) Macromol. Symp., 126, pp. 241-252Smith, G.J., New trends in photobiology: Photodegradation of keratin and other structural proteins (1995) J. Photochem. Photobiol., B, 27, pp. 187-198Robbins, C.R., (2002) Chemical and Physical Behavior of Human Hair, , Springer-Verlag, New York, 4th ednZuidema, P., Govaert, L.E., Baaijens, F.P.T., Ackermans, P.A.J., Asvadi, S., The influence of humidity on the viscoelastic bahaviour of human hair (2003) Biorheology, 40, pp. 431-439Barnicot, N.A., Birbeck, M.S.C., The electron microscopy of human melanocytes and melanin granules (1958) The Biology of Hair Growth, pp. 239-252. , ed. W. Montagna and R. A. Ellis, Academic Press, New YorkVan Der Mei, I.A.F., Blizzard, L., Stankovich, J., Ponsonby, A.-L., Dwyer, T., Misclassification due to body hair a seasonal variation on melanin density estimates for skin type using spectrophotometry (2002) J. Photochem. Photobiol., B, 68, pp. 45-52Draelos, Z.D., The biology of hair care (2000) Dermatol. Clin., 18, pp. 651-658Wolfram, L.J., Human hair: A unique physicochemical composite (2003) J. Am. Acad. Dermatol., 48, pp. S106-S114Sarna, T., Sealy, R.C., Photoinduced oxygen consumption in melanin systems. Action spectra and quantum yields for eumelanin and synthetic melanin (1984) Photochem. Photobiol., 39, pp. 69-74Nogueira, A.C.S., Joekes, I., Hair color changes and protein damage caused by ultraviolet radiation (2004) J. Photochem. Photobiol., B, 74 (2-3), pp. 109-117Bruls, W.A.G., Slaper, H., Van Der Leun, J.C., Berrens, L., Transmission of human epidermis and stratum corneum as a function of thickness in the ultraviolet and visible regions (1984) Photochem. Photobiol., 40 (4), pp. 485-494Braida, D., Dubief, C., Lang, G., Photoageing of hair fiber and photoprotection (1994) Skin Pharmacol., 7 (1-2), pp. 73-77Signori, V., Review of the current understanding of the effect of ultraviolet and visible radiation on hair structure and options for photoprotection (2004) J. Cosmet. Sci., 55, pp. 95-113Ratnapandian, S., Warner, S.B., Kamath, Y.K., Photodegradation of human hair (1998) J. Cosmet. Sci., 49, pp. 309-320Ruetsch, S.B., Kamath, Y., Weigmann, H., Photodegradation of human hair: A microscopy study (2001) Sun Protection in Man, pp. 175-205. , ed. P. U. Giacomoni, Elsevier, AmsterdamCheun, W.L., The chemical structure of melanin (2004) Pigm. Cell Res., 17, pp. 422-424Prota, G., (1992) Melanins and Melanogenesis, , Academic Press Inc, LondonMargalith, P.Z., (1992) Pigment Microbiology, , Chapman and Hall, LondonTolgyesi, E., Weathering of hair (1983) Cosmet. Toiletries, 98, pp. 29-33Agache, P.G., Quencez, E., The mechanism of solar erythema (1988) J. Appl. Cosmetol., 6, pp. 69-78Draelos, Z.D., The biology of hair care (2000) Dermatol. Clin., 18, pp. 651-658Andrady, A.L., Hamid, S.H., Hu, X., Torikai, A., Effects of increased solar ultraviolet radiation on materials (1998) J. Photochem. Photobiol., B, 46, pp. 96-103Müller, U., Rätzsch, M., Schwanninger, M., Steiner, M., Zöbl, H., Yellowing and IR-changes of spruce wood as result of UV-irradiation (2003) J. Photochem. Photobiol., B, 69, pp. 97-105O'Connell, R.A., Walden, M.K., Influence of ionizing radiation on wool fiber properties (1957) Text. Res. J., 27, pp. 516-518Jones, D.C., Carr, C.M., Cooke, W.D., Lewis, D.M., Investigating the photo-oxidation of wool using FT-Raman and FT-IR spectroscopies (1998) Text. Res. J., 68, pp. 739-748Dunlop, J.I., Nicholls, C.H., Electron spin resonance studies of ultraviolet irradiated keratin and related proteins (1965) Photochem. Photobiol., 4, pp. 881-890Davidson, R.S., The photodegradation of some naturally occurring polymers (1996) J. Photochem. Photobiol., B, 33, pp. 3-25Smith, G.J., The effect of light at different wavelengths on electron spin resonance in wool (1976) Text. Res. J., 46, pp. 510-513Smith, G.J., Claridge, R.F.C., Smith, C.J., The action spectra of free radicals produced by the irradiation of keratin containing bound iron(III) ions (1979) Photochem. 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Sci., 55, pp. 423-436Peterson, L.G., A simplification of the protein assay method of Lowry et al., which is more generally applicable (1977) Anal. Biochem., 83, pp. 346-356Lowry, O.H., Rosebrough, N.J., Farr, A.L., Randall, R.J., Protein measurement with the folin phenol reagent (1951) J. Biol. Chem., 193, pp. 265-275Hearle, J.W.S., A critical review of the structural mechanics of wool and hair fibers (2000) Int. J. Biol. Macromol., 27, p. 123Scanavez, C., Zoega, M., Barbosa, A., Joekes, I., Measurement of hair luster by diffuse reflectance spectrophotometry (2000) J. Cosmet. Sci., 51, pp. 289-302Reich, C., Robbins, C.R., Light scattering and shine measurements of human hair: A sensitive probe of the hair surface (1993) J. Soc. Cosmet. Chem., 44, pp. 221-234Tango, Y., Schimmoto, K., Development of a device to measure human hair luster (2001) J. Cosmet. Sci., 52, pp. 237-25