998 resultados para Arman, Alexandre (17..-18..)


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Se vuelven a discutir los argumentos a favor y en contra de la adscripción de iltikke como ceca de los ilergetes o de los ilercaones y la incidencia que en su ubicación pueda tener la de sikaibi o sikarh conocida desde 1994.

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- Americo Vespucci. Kuva s. 17-18 (Luku 4. Alonso d'Ojedan ja Amerikus Vesputiuksen ensimmäinen merimatka ja uuden maan löytäminen Länsi-Intiassa vuonna 1499 (Hispaniola), kertonut Antonius de Herrera.

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Sisällys/Contents: 1. ¿Andersen: ham-Mal¿ak. Targum: ¿Abi¿asap. 2. ¿Andersen: Be-¿aharit-jam. 3. ¿Andersen: Tippat ham-majim. & ha-Hol. 4-5. Andersen: Perah qatan. 6. H. Lewe: Perah nipla¿. & Qeren hash-shemesh. 7-8. Maqs Nordo: Siah hash-shoshannim. Targum: Sh.L. Gordon. 9. P. ¿Awwirpuk: ¿Ateret haz-zahab. 10. ¿A. Terje: he-Halil han-nipla¿. Targum: P. ¿Awwirpuk. 11-15. Ma¿asijjot liladim. Targum: Shelomo Berman. 16. Mika Josep Berditshevsqi: Ma¿asijjot we-¿aggadot. 17-18. Herodot: Hekal ra¿meses. ¿al jede: ¿A-S. 19. J.V. Levner: hab-Kotel ham-ma¿arabi. 20. ¿A.L. Ja¿aqubovis: ¿Abraham hak-Kaspi. 21-22. Sha¿ul Tshernihovsqi: Shirim. 23-25. Jishaq J. Qassenelson. Shirim.

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O objetivo deste trabalho foi identificar a variabilidade química de frutos de jenipapeiro com potencial econômico para o Recôncavo Baiano. Foram identificadas 100 árvores de jenipapeiro distribuídas em seis municípios do Recôncavo Baiano, onde se coletaram 10 frutos por planta para realização das análises químicas. As variáveis estudadas foram: pH, teor de sólidos solúveis (SS), ácido ascórbico (AA), acidez titulável (AT), relação entre sólidos solúveis e acidez titulável (SS/AT), açúcares redutores (AR), não-redutores (ANR) e totais (AST). Para a interpretação dos resultados, utilizaram-se análise descritiva e coeficiente de Correlação de Pearson. As análises dos frutos nas safras de 2004/2005 apresentaram valores médios iguais a 3,44 e 3,39 para o pH; 1,40% e 1,42% de AT; 17,18 ºBrix e 16,8 ºBrix para SS; 2,76 mg.100g-1 e 2,65 mg.100g-1 de ácido ascórbico; 9,26% e 8,95% de AR; 3,39% e 3,31% de ANR; 12,61% e 12,28% de AST; 12,37 e 12,00 para SS/AT. Os resultados permitiram concluir que existe variabilidade para os caracteres analisados, possibilitando a exploração econômica dos frutos para o consumo in natura e industrialização; que o SS contribui para a maioria dos caracteres, com exceção da vitamina C, e os genótipos JP12, JP39, JP41, JP59, JP73, JP79, JP80, JP83, JP89, JP90 e JP99 podem ser recomendados para utilização nas condições agroecológicas do Recôncavo Baiano.

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1 Helsingfors : A. W. Gröndahl 1847

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Käsikirjoitus

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In this paper we report the synthesis of biologically active compounds through a [3+4] cycloaddition reaction to produce the main frame structure, followed by several conventional transformations. The 1,2alpha,4alpha,5-tetramethyl-8-oxabicyclo[3.2.1]oct-6-en-3-one (11) obtained from a [3+4] cycloaddition reaction was converted into 1,2alpha,4alpha,5-tetramethyl-6,7-exo-isopropylidenedioxi-8 -oxabicyclo[3.2.1]octan-3-one (13) in 46% yield. This was further converted into the alcohols 1,2alpha,4alpha,5-tetramethyl-6,7-exo-isopropylidenedioxi-8-oxabicyclo[3.2.1]octan-3 alpha-ol (14), 1,2alpha,4alpha,5-tetramethyl-6,7-exo-isopropylidenedioxi-8 -oxabicyclo[3.2.1]octan-3beta-ol (15), 1,2alpha,4alpha,5-tetramethyl-3-butyl-6,7-exo-isopropylidenedioxi-8-oxabicyclo[3.2.1]octan-3 alpha-ol (17), 1,2alpha,4alpha,5-tetramethyl-3-hexyl-6,7-exo-isopropylidenedioxi-8-oxabicyclo[3.2.1]octan-3 alpha-ol (18) and 1,2alpha,4alpha,5-tetramethyl-3-decyl-6,7-exo-isopropylidenedioxi-8-oxabicyclo[3.2.1]octan-3 alpha-ol (19). Dehydration of 17, 18 and 19 with thionyl chloride in pyridine resulted in the alkenes 20, 21 and 22 in ca. 82% - 89% yields from starting alcohols. The herbicidal activity of the compounds synthesized was evaluated at a concentration of 100 µg g-1. The most active compound was 21 causing 42,7% inhibition against Cucumis sativus L.

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The essential oils of the leaves and fruits obtained by hydrodistillation of Xylopia sericea, collected in the restinga area of Pernambuco, were analyzed by GC (HP 5890 SERIES II) and GC/MS (HP 5890B SERIES II/ MSD 5971). A major part of the volatile components identified in the oils of fruits and leaves were monoterpenes and sesquiterpenes. Cubenol (57.43%) and alpha-epi-muurolol (26.09%) were the main compounds found in the leaves, whereas beta-pinene (45.59%) and alpha-pinene (17.18%) were the fruits major components. The acaricidal activity of the essential oils was evaluated for Tetranychus urticae. The oil of the leaves was more active than that of the fruits showing an LC50 value of 4.08 µL/L of air for a 72 h period.

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The terpenoid composition of seven amber samples from Araripe Basin (Santana Formation, Crato Member) has been analyzed by gas chromatography-mass spectrometry to determine their botanical origin. The diterpenoids, which have been identified in the fossil resin extracts are derived primarily from the abietane class, e.g., dehydroabietane, 4-epidehydroabietol, 16,17,18-trisnorabieta-8,11,13-triene, 7-oxo-16,17,19-trisnorabieta-8,11,13-trieno, dehydroabietic acid, ferruginol, hinokiol and hinokione. Their composition is certainly typical for conifers, and angiosperms can be excluded as the botanical source, as no triterpene was identified. The terpenoid characteristics strongly support a relationship to the Araucariaceae or Podocarpaceae families. In addition, the fossil record of the embedding sediments (pollen and fossil leaves) also supports the proposal of these paleobotanical origins for the ambers.