Results 81 to 90 of about 16,136 (202)

Sobre la Pteridofita argentino-chilena "?Lycopodium confertum?"

open access: yesLilloa, 1945
El autor estudia las razones de la confusión que existe en la determinación de la especie Lycopodium confertum Willd. y L. magellanicum Sw., analizando las opiniones publicadas por varios autores que han estudiado el ?licopodius?.
Gualterio Looser
doaj  

Lycopodiaceae in Brazil. Conspectus of the family I. The genera Lycopodium, Austrolycopodium, Diphasium, and Diphasiastrum

open access: yesRodriguésia, 2014
A conspectus of the Lycopodiaceae in Brazil is presented, following a generic classification based on anatomy, chromosome numbers, spores and gametophytes, as well as recent molecular studies.
Benjamin Øllgaard, Paulo G. Windisch
doaj  

Feasibility of reduced gravity experiments involving quiescent, uniform particle cloud combustion [PDF]

open access: yes
The study of combustible particle clouds is of fundamental scientific interest as well as a practical concern. The principal scientific interests are the characteristic combustion properties, especially flame structure, propagation rates, stability ...
Berlad, Abraham L.   +3 more
core   +1 more source

Lycopodiaceae no Parque Nacional do Itatiaia, RJ e MG, Brasil Lycopodiaceae of Itatiaia National Park, Rio de Janeiro and Minas Gerais states, Brazil

open access: yesActa Botânica Brasílica, 2010
O Parque Nacional do Itatiaia localiza-se na região Sudeste do Brasil, nos limites dos estados do Rio de Janeiro e Minas Gerais, com altitudes que variam de 390 a 2789 m (Pico das Agulhas Negras).
Carla Gabriela Vargas Ramos   +1 more
doaj   +1 more source

Sulfonated sporopollenin as an efficient and recyclable heterogeneous catalyst for dehydration of D-xylose and xylan into furfural [PDF]

open access: yes, 2016
The natural acidity of sporopollenin, the biopolymer coating the outer walls of pollen grains, was enhanced by the sulfonation of its surface. Modified sporopollenin displaying sulfonic acid groups has been prepared, characterized by elemental analysis ...
Boa, Andrew N.   +8 more
core   +2 more sources

Explosibility and Flammability Characteristics of Nicotinic Acid-Lycopodium/Air Mixtures

open access: yesChemical Engineering Transactions, 2014
Powder products are frequently meet as dust mixtures in industrial processes. However the effect of mixing combustible dusts on the flammability and explosion behaviour of their mixture is still unclear.
R. Sanchirico   +3 more
doaj   +1 more source

Estudio comparativo de las epidermis foliares de las licopodiaceas ibericas I. Estomas [PDF]

open access: yes
Se realiza un estudio comparativo de los estomas, tanto de los esporofilos como de los trofofilos, de Huperzia selago (L.) Bernh ex Schrank & Mart., Lycopodium annotinum L.,Lycopodium clavatum L., Diphasiastrum alpinum (L.) Holub y Lycopodiella inundata (
Ibars, A. M.   +3 more
core  

Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 3., description of dollecting sites, the vegetation of Kahuzi-Biega-National Park/Zaire, Nyungwe Forest and Virunga volcanoes/Rwanda [PDF]

open access: yes, 1993
During the BRYOTROP-Expedition in 1991, 71 collecting sites could be visited. These are situated in the Kahuzi-Biega-National Park/Zaire, the Nyungwe Forest and the Virunga volcanoes/Rwanda.
Fischer, Eberhard
core  

Notas nomenclaturales y taxonómicas en la sección Crassistachys Herter del género Lycopodium L. (Lycopodiaceae), II

open access: yesRevista del Museo de La Plata
Se dan a conocer dos especies nuevas para la ciencia: Lycopodiul11 acifoliul11 Rulleri y L. spongiosul11 Rolleri. Se incluye a ambas en la Sección CrassistacllYS Ilerter.
Cristina H. Rolleri
doaj  

Identifikasi Keanekaragaman Paku-pakuan (Pteridophyta) Epifit Pada Hutan Bekas Tebangan Di Hutan Penelitian Malinau – Cifor Seturan (Diversity Identification on the Pteridophytes Epiphyte at the Log Over Area at Malinau Forest Research – Cifor Seturan) [PDF]

open access: yes, 2007
The aim from this research is to found out the various kinds of Pteridophytes epiphytes and its porophyte in the log over area to the broadness of 12 hectares in the Malinau Research Forest (MRF-CIFOR) Seturan – district of Long Loreh the regency of ...
Sujalu, A. P. (Akas)
core  

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