Light fluctuations and crown traits were studied for saplings of four tree species in a Costa Rican rain forest. Light fluctuations (1988–1994) were assessed by annual light estimations above saplings, using a visual crown position index. Crown traits in 1994 and growth between 1994 and 1995 were measured. Crown position values varied between 1.5 and 2.5. Of the 70 saplings only four were found...

In this work, a study was conducted to investigate the effects of different biodiesel blends with hydrogen peroxide additive on performance and emissions an internal combustion engine under various operating parameters. A CI operated diesel, four dissimilar biodiesels, H2O2 at proportions. The used were Jatropha (D60JB30A10, D60JB34A6, D60JB38A2, D60JB40), Honge (D60HB30A10, D60HB34A6, D60HB38A...

A forest type dominated by Peltogyne gracilipes Ducke (Caesalpiniaceae) occurs on Maraca Island on a range of soil types. Maraca is located in Roraima State (Brazil) in the Rio Uraricoera and has an area of about 100,000 ha. This study compares the structure and floristic composition of the Peltogyne forest with the most widespread lowland forest type on Maraca and investigates some factors tha...

| Abstract + References | PDF (2414 K)Cabral, J.A., McChesney, J.D. and Milhous, W.K., 1993. A new antimalarial quassinoid from Simaba guianesis. Journal of Natural Products 56 11, pp. 1954–1961. Abstract-EMBASE | Abstract-Elsevier BIOBASE | Abstract-MEDLINE | Order Document | Full Text via CrossRefDewit, 1960. Spermatophytes. Flore du Congo Belge et du Ruanda-Urundi, 9, 538. Gilbert, G...

Roger M. Kao, Russell D. Brown, Allan G. Halline, Rita M. Herm-Barabasz, Rama P.Venu. Use of Droperidol during ERCP: Does it reduce the Need for Anesthesia.Submitted to AGA 2002. Crawford JA, Meyer JM, Herm-Barabasz RM, Goldstein JL. Two open-label efficacytrials of Ranitidine bismuth citrate (RBC) in combination with Clarithromycin andAmoxicillin or Metronidazole for Helicobact...

A parsimony analysis was conducted on 319 rbcL sequences, comprising 242 from 194 genera of Leguminosae and 77 from other families. Results support earlier conclusions from rbcL and other molecular data that a monophyletic Leguminosae is part of a Fabales that includes Polygalaceae, Surianaceae, and the anomalous rosid genus Quillaja. Within legumes, results of previous analyses were also suppo...