602 research outputs found

    PHYSICOCHEMICAL PROPERTIES AND ACCEPTANCE OF JELLY AND NECTAR OF ARAZA AND PAPAYA

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    The main objective of this work was to evaluate the acceptance of jelly and nectars made from araza (Eugenia stipitata Mc Vaugh) and papaya. The following percentages of araza and papaya were, respectively, used: 50:50; 40:60; 30:70 and 20:80. For both pulps and products the variables studied were: acidity, pH, total content of soluble solids. Acceptance tests were conducted for the developed products. An inverse relation was observed between the papaya proportion and the soluble solids content and titratable acidity. The jelly made with skin araza presented higher levels of soluble solids, higher pH and lower titratable acidity compared with those obtained with fruit without the peel. Higher concentrations of papaya pulp improved the acceptance of nectar and jelly in all formulations. It was observed an increased in the acceptance when using araza with skin, until levels of 45% of papaya for the jelly and 24% for the nectar. This was probably due to specific sensorial attributes of the araza skin and it is an indicator for future researches

    Water prospection in volcanic islands by Time Domain Electromagnetic (TDEM) surveying: The case study of the islands of Fogo and Santo Antão in Cape Verde

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    Water demand in islands, focused in agriculture, domestic use and tourism, is usually supplied by groundwater. Thus the information about groundwater distribution is an important issue in islands water resources management. Time Domain Electromagnetic (TDEM) provides underground resistivity distribution at greater depths and is of easier application than other methods. In this study TDEM technique was used for groundwater prospection in two volcanic islands with water supply problems, the islands of Fogo and Santo Antão in the Republic of Cape Verde. The 10 islands of Cape Verde Archipelago, located off the coast of Senegal (W Africa), present a semi-arid climate and thus suffer from irregular and scarce precipitation. In the Island of Fogo 26 TDEM soundings, presenting an area distribution, were performed on the SW flank of the volcanic edifice. These allowed obtaining a 3D model composed of 5 layers parallel to the topographic surface separated by 50 m depth down to − 250 m. The results indicate the presence of the water-table at a depth of 150 m in the lower ranges of the W flank of the island, and at > 200 m depth in the area above 250 m above sea level (a.s.l.). In the Island of Santo Antão 32 TDEM soundings, distributed along 5 linear profiles, were obtained on the north-eastern half of the island. The profiles are located in two regions exposed to different humidity conditions to the N and S of the main water divide. The northern flank receives the dominant trade winds first and most of the precipitation and, therefore, the water-table is shallower (~ 50 m depth) than in the S (~ 100 m depth). Our study demonstrates the applicability and usefulness of the TDEM method for groundwater prospection in high resistivity contexts such as in volcanic islands.info:eu-repo/semantics/publishedVersio

    Spinning Strings, Black Holes and Stable Closed Timelike Geodesics

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    The existence and stability under linear perturbation of closed timelike curves in the spacetime associated to Schwarzschild black hole pierced by a spinning string are studied. Due to the superposition of the black hole, we find that the spinning string spacetime is deformed in such a way to allow the existence of closed timelike geodesics.Comment: 5 pages, RevTex4, some corrections and new material adde

    Factorization and Nonfactorization in B Decays

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    Using NLL values for Wilson coefficients and including the contributions from the penguin diagrams, we estimate the amount of nonfactorization in two-body hadronic B decays. Also, we investigate the model dependence of the nonfactorization parameters by performing the calculation using different models for the form factors. The results support the universality of nonfactorizable contributions in both Cabibbo-favored and Cabibbo-suppressed B decays.Comment: 17 pages, 5 figures, revte

    The Multidisciplinary Management Of Avulsed Teeth: A Case Report

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    This paper reports multidisciplinary treatment of a dental trauma case to achieve a favorable prognosis. A healthy 14-year-old girl reported avulsion of teeth 11 and 21 which had occurred three months earlier. The initial treatment consisting of replantation with a semi-rigid splint was performed in hospital. At presentation, the patient was still using the semi-rigid splint. The clinical examination revealed the presence of increased mobility in teeth 11 and 21, and absence of vitality in both. Radiographic examination showed the presence of inflammatory external root resorption in both teeth. The treatment proposed consisted of teeth extraction, a temporary prosthesis followed by adhesive prosthesis, and finally, implant surgery associated with porcelain crowns.74203206Koca, H., Topaloglu-Ak, A., Sutekin, E., Koca, O., Acar, S., Delayed replantation of an avulsed tooth after 5 hours of storage in saliva: A case report (2010) Dent Traumatol, 26 (4), pp. 370-373Lux, H.C., Goetz, F., Hellwig, E., Case report: Endodontic and surgical treatment of an upper central incisor with external root resorption and radicular cyst following a traumatic tooth avulsion (2010) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 110 (5), pp. e61-7Flores, M.T., Andersson, L., Andreasen, J.O., Bakland, L.K., Malmgren, B., Barnett, F., Guidelines for the management of traumatic dental injuries. II. Avulsion of permanent teeth (2007) Dent Traumatol, 23 (3), pp. 130-136Roskamp, L., Westphalen, V.P., Carneiro, E., Fariniuk, L.F., Silva, N.U.X., The positive influence of atopy on the prognosis of avulsed and replanted teeth despite differences in post- trauma management (2011) J Endod, 37 (4), pp. 463-465Andreasen, J.O., Andreasen, F., (2007) Textbook and Color Atlas of Traumatic Injuries to The Teeth, p. 912. , 4th Edition, Copenhagen: Denmark: MunksgaardMajorana, A., Bardellini, E., Conti, G., Keller, E., Pasini, S., Root resorption in dental trauma: 45 cases followed for 5 years (2003) Dent Traumatol, 19 (5), pp. 262-265Andreasen, J.O., Borum, M.K., Jacobsen, H.L., Andreasen, F.M., Replantation of 400 avulsed permanent incisors. 1. Diagnosis of healing complications (1995) Endod Dent Traumatol, 11 (2), pp. 51-58Soares, A.J., Gomes, B.P., Zaia, A.A., Ferraz, C.C., de Souza-Filho, F.J., Relationship between clinical-radiographic evaluation and outcome of teeth replantation (2008) Dent Traumatol, 24 (2), pp. 183-188Heithersay, G.S., Management of tooth resorption (2007) Aust Dent J, 52 (1 SUPPL.), pp. S105-S121Gold, S.I., Hasselgren, G., Peripheral inflammatory root resorption. A review of the literature with case reports (1992) J Clin Periodontol, 19 (8), pp. 523-534Emerich, K., Czerwinska, M., Ordyniec-Kwasnica, I., Immediate self-replantation of an avulsed permanent mandibular incisor - a case report (2010) Dent Traumatol, 26 (5), pp. 443-446Guzeler, I., Uysal, S., Cehreli, Z.C., Management of trauma-induced inflammatory root resorption using mineral trioxide aggregate obturation: Two-year follow up (2010) Dent Traumatol, 26 (6), pp. 501-504Drummond, S., Pessica, L.S., Monnerat, A.B., Monnerat, A.F., de Oliveira, A.M.A., Multidisciplinary solution for an avulsed upper central incisor: Case report (2011) Dent Traumatol, 27 (3), pp. 241-246Estevez, R., Aranguren, J., Escorial, A., de Gregorio, C., De La Torre, F., Vera, J., Invasive cervical resorption Class III in a maxillary central incisor: Diagnosis and follow-up by means of cone-beam computed tomography (2010) J Endod, 36 (12), pp. 2012-2014Vitale, M.C., Caprioglio, C., Martignone, A., Marchesi, U., Botticelli, A.R., Combined technique with polyethylene fibers and composite resins in restoration of traumatized anterior teeth (2004) Dent Traumatol, 20 (3), pp. 172-177Iseri, H., Solow, B., Growth displacement of the maxilla in girls studied by the implant method (1990) Eur J Orthod, 12 (4), pp. 389-398Odman, J., Grondahl, K., Lekholm, U., Thilander, B., The effect of osseointegrated implants on the dento-alveolar development. A clinical and radiographic study in growing pigs (1991) Eur J Orthod, 13 (4), pp. 279-286Graber, T.M., Vanarsdall, R., (2000) Orthodontics: Current Principles and Techniques, p. 1040. , 3th Edition. St Louis, Missouri: MosbyPolat, Z.S., Tacir, I.H., Restoring of traumatized anterior teeth: A case report (2008) Dent Traumatol, 24 (3), pp. e390-

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

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    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

    Ward Identities, B-> \rho Form Factors and |V_ub|

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    The exclusive FCNC beauty semileptonic decay B-> \rho is studied using Ward identities in a general vector meson dominance framework, predicting vector meson couplings involved. The long distance contributions are discussed which results to obtain form factors and |V_ub|. A detailed comparison is given with other approaches.Comment: 30 pages+four postscript figures, an Appendix adde

    Computer-assisted timber identification based on features extracted from microscopic wood sections

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    Wood anatomy is one of the most important methods for timber identification. However, training wood anatomy experts is time-consuming, while at the same time the number of senior wood anatomists with broad taxonomic expertise is de- clining. Therefore, we want to explore how a more automated, computer-assisted approach can support accurate wood identification based on microscopic wood anatomy. For our exploratory research, we used an available image dataset that has been applied in several computer vision studies, consisting of 112 — mainly neotropical — tree species representing 20 images of transverse sections for each species. Our study aims to review existing computer vision methods and compare the success of species identification based on (1) several image classifiers based on manually adjusted texture features, and (2) a state-of-the-art approach for image classification based on deep learning, more specifically Convolutional Neural Networks (CNNs). In support of previous studies, a considerable increase of the correct identification is accomplished using deep learning, leading to an accuracy rate up to 95.6%. This remarkably high success rate highlights the fundamental potential of wood anatomy in species identification and motivates us to expand the existing database to an extensive, worldwide reference database with transverse and tangential microscopic images from the most traded timber species and their look-a-likes. This global reference database could serve as a valuable future tool for stakeholders involved in combatting illegal logging and would boost the societal value of wood anatomy along with its collections and experts.Plant sciencesNaturali

    Early immune responses and parasite tissue distribution in mice experimentally infected with oocysts of either archetypal or non-archetypal genotypes of Toxoplasma gondii

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    In most of the world Toxoplasma gondii is comprised of archetypal types (types I, II and III); however, South America displays several non-archetypal strains. This study used an experimental mouse model to characterize the immune response and parasite kinetics following infection with different parasite genotypes. An oral inoculation of 50 oocysts per mouse from T. gondii M4 type II (archetypal, avirulent), BrI or BrIII (non-archetypal, virulent and intermediate virulent, respectively) for groups (G)2, G3 and G4, respectively was used. The levels of mRNA expression of cytokines, immune compounds, cell surface markers and receptor adapters [interferon gamma (IFNγ), interleukin (IL)-12, CD8, CD4, CD25, CXCR3 and MyD88] were quantified by SYBR green reverse transcription-quantitative polymerase chain reaction. Lesions were characterized by histology and detection by immunohistochemistry established distribution of parasites. Infection in G2 mice was mild and characterized by an early MyD88-dependent pathway. In G3, there were high levels of expression of pro-inflammatory cytokines IFNγ and IL-12 in the mice showing severe clinical symptoms at 8–11 days post infection (dpi), combined with the upregulation of CD25, abundant tachyzoites and tissue lesions in livers, lungs and intestines. Significant longer expression of IFNγ and IL-12 genes, with other Th1-balanced immune responses, such as increased levels of CXCR3 and MyD88 in G4, resulted in survival of mice and chronic toxoplasmosis, with the occurrence of tissue cysts in brain and lungs, at 14 and 21 dpi. Different immune responses and kinetics of gene expression appear to be elicited by the different strains and non-archetypal parasites demonstrated higher virulence
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