997 resultados para NH(4)-N
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Neste artigo apresenta-se um problema publicado no livro "O homem que calculava", de Malba Tahan, e algumas das suas soluções.
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP
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We have identified an allelic deletion common region in the q26 region of chromosome 10 in endometrial carcinomas, which has been reported previously as a potential target of genetic alterations related to this neoplasia. An allelotyping analysis of 19 pairs of tumoral and non-tumoral samples was accomplished using seven microsatellite polymorphic markers mapping in the 10q26 chromosomal region. Loss of heterozygosity for one or more loci was detected in 29% of the endometrial carcinoma samples. The observed pattern of loss enabled the identification of a 3.5 Mb common deleted region located between the D10S587 and D10S186 markers. An additional result from an endometrial sample with evidence of a RER phenotype may suggest a more centromeric region of loss within the above-mentioned interval. This 401.84 Kb interval flanked by the D10S587 and D10S216 markers may be a plausible location for a putative suppressor gene involved in early stage endometrial carcinogenesis.
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Solution enthalpies of 1,4-dioxane have been obtained in 15 protic and aprotic solvents at 298.15 K. Breaking the overall process through the use of Solomonov's methodology the cavity term was calculated and interaction enthalpies (Delta H-int) were determined. Main factors involved in the interaction enthalpy have been identified and quantified using a QSPR approach based on the TAKA model equation. The relevant descriptors were found to be pi* and beta, which showed, respectively, exothermic and endothermic contributions. The magnitude of pi* coefficient points toward non-specific solute-solvent interactions playing a major role in the solution process. The positive value of the beta coefficient reflects the endothermic character of the solvents' hydrogen bond acceptor (HBA) basicity contribution, indicating that solvent molecules engaged in hydrogen bonding preferentially interact with each other rather than with 1,4-dioxane. (C) 2013 Elsevier B.V. All rights reserved.
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Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia de Electrónica e Telecomunicações