铸装B���药的隔板实验数值模拟

本文对点火与增长化学反应速率模型进行了改进,采用DYNA2D程序对铸装B���药的隔板实验过程以及热点的作用进行了二维数值模拟,并和实验结果进行了对照。

Cruise 4 of the M/V N.B. Scofield for 1957.

(PDF contains 3 pages.)

Cruise 5 of the N.B. Scofield for 1957.

(PDF contains 4 pages.)

Cruise Report 64-S-6: N. B. Scofield, September 29 to October 25, 1964

(PDF contains 4 pages.)

Results of abundance surveys of juvenile Atlantic and gulf Menhaden, Brevoortia tyrannus and B. patronus

The estuarine populations of juvenile Atlantic and gulf menhaden (Brevoortia tyrannus and B. patronus) were sampled during two-boat, surface-trawl, abundance surveys extensively conducted in the 1970s. Juvenile Atlantic menhaden were sampled in 39 estuarine streams along the U.S. Atlantic coast from northern Florida into Massachusetts. Juvenile gulf menhaden were sampled in 29 estuarine streams along the Gulf of Mexico from southeast Texas into western Florida. A stratified, two-stage, cluster sampling design was used. Annual estimates of relative juvenile abundance for each species of menhaden were obtained from catch-effort data from the surveys. There were no significant correlations, for either species, between the relative juvenile abundance estimates and fishery-dependent estimates of year-class strength. From 1972 to 1975, the relative abundance of juvenile Atlantic menhaden in north Atlantic estuaries decreased to near zero. (PDF file contains 22 pages.)

Activación de aldehídos a,b-insaturados mediante aminocatálisis en procesos enantioselectivos. Cicloadiciones (3+2) y reacciones en cascada Michael/Henry

During the research that it is summarized in the present memory, the activation of enals via iminium ion catalysis in different transformations has been studied. Firstly, a 1,3-dipolar cycloaddition between stable azomethine ylides and a,b-unsaturated aldehydes catalyzed by a chiral imidazolidinone derivative has been optimized. Employing this methodology we have synthesized a large range of densely substituted pyrroloisoquinolines and pyrrolophthalazines with good yields and high values of diastereo- and enantioselectivity. Moreover, a mechanistic study has been carried out based on DFT calculations and experimental data which have allowed us to propose that the (3+2) cycloaddition reaction follows a sequential Michael addition/Mannich cyclization pathway. The formation of the iminium ion as a result of the condensation between the a,b-unsaturated aldehyde and the catalyst plays an essential role, regarding both reactivity and stereoselectivity. On the other hand we have developed a methodology to carry out a cascade Michael/Henry reaction followed by a sequential dehydration. Starting from simple substrates (2-nitromethylacrilates and a,b-unsaturated aldehydes) and employing a prolinol-derivative catalyst a series of quiral nitrocyclohexadienes have been synthesized.

Diário da Constituinte [gravação de vídeo] : [programa n. 706 B]

A Constituinte manteve a vitaliciedade dos juízes do Tribunal de Contas e considerou que as Forças Armadas são responsáveis pela defesa da lei e da ordem. A emenda que suprimia os blocos parlamentares do textoconstitucional, impedindo que eles participassem, proporcionalmente, da formação de de mesas e comissões do Congresso foi rejeitada.

Diário da Constituinte [gravação de vídeo] : [programa n. 558]

Um balanço da Constituinte é um dos assuntos do Congresso Nacional do BC do B, que se realiza em São Paulo até domingo. A constituinte começa a votar na semana próxima o último título da futura Carta. É o título da Ordem Social. Existem vários pontos polêmicos, tais como os temas que se referem à Educação. O outro ponto polêmico da Ordem Social é o Capítulo da Comunicação. Foi o único Capítulo da Constituição que não conseguiu ser votado nas etapas anteriores, por causa das divergências. Representantes da Federação Nacional dos Jornalistas e do Sindicato dos Artistas se reuniram com os constituintes para discutir algumas questões: 1ª : A Criação de um Conselho de Comunicação. 2ª: Moralizar a concessão de canais de rádio e TV. 3ª: Importância cultural do rádio e da TV para o país. À tarde houve Sessão Solene em homenagem aos 100 anos da Abolição da Escravidão no Brasil.

Surface Expression and Subunit Specific Control of Steady Protein Levels by the Kv7.2 Helix A-B Linker

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Voyages dans la partie septentrionale du Bresil, depuis 1809 jusqu'en 1815, comprenant les provinces de Pernambuco, Fernambouc, Seara, Paraiba, Maragnan, etc.

Titulo original : travels in brazil : in the years from 1809, to 1815.

Voyage au Brésil, dans les années 1815, 1816 et 1817

Ouvrage enrichi d'un superbe atlas, compose de 41 planches gravées en taille-douce, et de trois carte.