|
|
|
| Registros recuperados: 1.481 | |
|
| |
|
|
| Acero P., A.. |
| Hasta el momento se han identificado catorce especies de peces de la familia Pomacentridae en el Caribe colombiano. Siete de ellas en el género Eupomacentrus, incluyendo E. dorsopunicans, E. planifrons, E. partitus, E. leucostictus, E. meliis, E. variabilis y la estuarina E. otophorus. Las dos especies de Abudefduf del Caribe son conocidas en Colombia, A. saxatilis y A. taurus. Microspathodon chrysurus es uno de los pomacentridus más abundantes en los arrecifes coralinos colombianos, destacándose los juveniles de esta especie, pues desarrollan un comportamiento especial, que se expresa picando los costados de los peces que solicitan limpieza, disturbándolos. Chronih posee cuatro especies conocidas en el área, C. cyanea y C. muliilftieafa, que habitan en... |
| Tipo: Journal Contribution |
Palavras-chave: Marine fish; Taxonomy; Taxonomy; Http://aims.fao.org/aos/agrovoc/c_7631. |
| Ano: 1978 |
URL: http://hdl.handle.net/1834/3935 |
| |
|
| |
|
|
| Adema, F.; Mennema, J.. |
| The authors mention the explosive dispersal after 1970 of Senecio inaequidens DC., an originally adventitious Southafrican plant, in the southern part of the province Limburg. It is remarkable that this species is not only naturalised now in the Netherlands, but also near-by in Belgium and W. Germany, and in N. Italy. S. inaequidens has been recorded in the Netherlands in 24 hour-squares, mainly in the province Limburg, and on 4 adventitious localities (fig. 1). |
| Tipo: Article / Letter to the editor |
|
| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/527504 |
| |
|
|
| Ahmad, Khwaja J.. |
| Structure and distribution of the foliar epidermal hairs of 109 species and two varieties belonging to 39 genera of the family Acanthaceae have been studied. Both glandular and non-glandular epidermal hairs have been recorded in the investigated taxa. The glandular hairs may be subsessile or long-stalked. The subsessile glandular hairs are of two types: i) Glandular head panduriform, 2-celled, and ii) Glandular head globular or disc-shaped, 2—8- or more-celled. Subfamilies Nelsonioideae and Thunbergioideae are characteri«*H hv thfi nanduriform hairs, while Mendoncioideae and Acanthoideae have glandular hairs with a globular head. Long-stalked glandular hairs are present only in nine species. Non-glandular hairs are also widely distributed in the family;... |
| Tipo: Article / Letter to the editor |
|
| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/525563 |
| |
|
| |
|
|
| Alaouze, Chris M.; Sturgess, Neil H.; Watson, Alistair S.. |
| Dynamic programming is used to examine whether Australia should store wheat for subsequent sale at higher prices. The dynamic programming model is developed assuming that the demand for Australian wheat is perfectly elastic at the world price. An important consequence of this assumption is that the algorithm used in computing the optimal policy takes a very simple form. It is concluded that interest rate and wheat price in the following season are the major determinants of storage policy. When prices are stable, rule-of-thumb policies, such as storing when prices are below average, are sub-optimal. |
| Tipo: Journal Article |
Palavras-chave: Marketing. |
| Ano: 1978 |
URL: http://purl.umn.edu/22715 |
| |
|
| |
|
| |
|
|
| Alcarde,J.C.; Barbin,D.. |
| Foram estudados comparativamente dois métodos de solubilização de amostras de calcários agrícolas para a determinação do cálcio e do magnesio: um, baseado em digestão ácida enérgica, é recomendado para a determinação dos teores totais daqueles elementos, e outro, mais simples e rápido, é usado na rotina dos laboratórios; ambos foram aplicados em diferentes frações granulométricas das amostras. Os resultados, analisados estatisticamente, não mostraram diferenças significativas entre os dois métodos estudados, assim como nos teores de óxidos de cálcio e de magnésio contidos nas diferentes frações granulométricas que compõem os calcários moídos para uso na agricultura. O método simplificado de solubilizaçao da amostra pode perfeitamente ser indicado para... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1978 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761978000100027 |
| |
|
|
| Alencar,Jurandyr da Cruz; Fernandes,Noeli Paulo. |
| Resumo Os autores apresentam o desenvolvimento do Pau rosa (Aniba duckei Kostermans), em três parcelas experimentais distintas, sendo duas sob sombra de floresta primária submetida a cortes do subosque e uma sob sombra de um plantio de Caroba (Jacaranda copaia). Estudam o crescimento da espécie em diâmetro, altura e volume com diferentes tipos de material propagativo. Determinam os incrementos médios anuais e periódicos médios em altura, volume real com casca/ha, incrementos/ha/ano, e a percentagem de sobrevivência média em cada parcela. Concluem que um maior desenvolvimento quantitativo de Pau rosa pode ser obtido se for dado ao plantio uma maior taxa de luminosidade. Sugerem o plantio sob sombra de floresta natural, anteriormente explorada. Com o manejo... |
| Ano: 1978 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671978000400523 |
| |
|
| |
|
| |
|
| |
|
|
| Allen, G.; D'Ozouville, Laurent; L'Yavanc, Jacky. |
| The Aber Benoît, a small estuary on the North West coast of Brittany was polluted by oil from the Amoco Cadiz oil spill. Preliminary results from water and sediment samples taken in the estuary in May 1978, show that two months after the initial spill, high concentrations of hydrocarbures existed in the water and sediments of the estuary. The Aber Benoît shows a well developed salt wedge and upstream increasing suspended sediment concentrations. Oil was dispersed more or less evenly throughout the water column, in the entire length of the estuary. In the bottom sediments, oil had accumulated to depths of 30 cm. Sand bars appear to induce a trapping of oil in the estuary channel. |
| Tipo: Text |
Palavras-chave: Estuaire; Sédiment; Pollution Hydrocarbures; Estuary; Sediment; Oil spill. |
| Ano: 1978 |
URL: http://archimer.ifremer.fr/doc/00306/41721/40932.pdf |
| |
|
| |
|
|
| Allenou, Jean-pierre; Renard, Vincent. |
| Scientific and technical report n°37 from Centre Océanologique de Bretagne is devoted to the Sea-Beam, a multi-beam echo-sounder installed on the B.V. JEAN CHARCOT in the spring of 1977. It describes, in general terms, the main characteri stics as well as an evaluation of the performance and potentiel of the system. The Sea-deam is manufactured buy General Instrument Corporation, Westwood, Massachusetts. [NOT CONTROLLED OCR] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1978 |
URL: http://archimer.ifremer.fr/doc/1978/rapport-4792.PDF |
| |
|
| |
|
|
| Almeida,Flávio Barbosa de; Mello,J A Nunes de. |
| Resumo Em área do Estado do Amazonas (Município de Barcelos) onde recentemente foram assinalados seis casos humanos suspeitos de moléstia de Chagas por sorologia positiva, procuramos o Trypanosoma cruzi em 35 pessoas, 9 cães domésticos e 71 mamíferos silvestres. Todos foram negativos para tripanosomas, exceto 6 morcegos de quatro espécies, que albergavam flagelados com características do subgênero Schizotrypanum: Carollia perspicilata, Glossophaga soricina, Desmodus rotundus e Mollossidae sp. Cultura do flagelado de um dos G. soricina infectou camundongo, caráter que o aproxima do T. cruzi. Todos os triatomíneos que capturamos — Panstrongylus rufotuberculatus, Eratyrus mucronatus, Rhodnius pictipes e R. brethesi — foram negativos para flagelados. |
| Ano: 1978 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671978000400595 |
| |
|
|
| Aloisi,R. R.; Boni,N. R.; Ferreira,M. E.. |
| Summary This work presents a semi-detailed soil survey and results from preliminary data of soils occuring in disforested area near the buildings of the Humboldt Center of Aripuanã County (MT). After preliminary reconnaissance, 3 soil profiles were described and 72 samples were taken an their analysis led to the following classification: Red-Yellow Latosol Dystrophic Weak A medial texture, and Red. Yellow Latosol Dystrophic Weak A clay texture. A simple analysis of that data indicates the use of conservationist proceedures. |
| Ano: 1978 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671978000200309 |
| |
| Registros recuperados: 1.481 | |
|
|
|
