Buscar
Mostrando ítems 31-40 de 119
Factores que influyen en la embriogénesis somática in vitro de palmas (arecaceae)
(Universidad Nacional de Colombia, 2011)
Título en ingles: Factors affecting in vitro somatic embryogenesis of palms (Arecaceae) Resumen La embriogénesis somática (ES) es una vía de desarrollo in vitro que presenta una serie de ventajas sobre otras técnicas ...
A review of the massive Chilean palm Jubaea chilensis
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales, 2017-07-01)
Diverse information about the Chilean palm Jubaea chilensis, an endemic species to the Chilean Mediterranean ecosystem, has been generated along the two last centuries. The objective of this review is to bring together in ...
Asymbiotic seed germination and in vitro seedling development of cattleya mendelii dombrain (orchidaceae)
(Universidad Nacional de Colombia, 2012-01-01)
Cattleya mendelii is an endemic orchid species from Colombia, which has a great ornamental value which is in danger of extinction due to massive collection and their natural habitat’s destruction by human activities. In ...
Retórica, argumentación y comunicación
(2003-04)
The present article is an historic rebuilding and research project exercise concerning to rethoric tradition and critic argumentation. In a first step we follow the beginnings of rethoric greeks art, the systematic ...
The rock processing sector: part i: cutting technology tools, a new diamond segment band saw part ii: study of cutting forces
(Universidad Nacional de Colombia Sede Medellín, 2010)
This article presents the state of the art in cutting procedures used for ornamental stone processing: primarily diamond segment discs, diamond wires and frame saws. In all these, a reduction in cutting thickness has a ...
Floral scent: From sensorial to instrumental evaluation
(International Society for Horticultural Science, 2017)
Floral scent plays a crucial role in the interactions between plants and their environment, and is composed of several to many volatile compounds. From the aesthetic point of view, floral scent is one of the characters ...
Reassessment of the hairy long-nosed armadillo “Dasypus” pilosus (Xenarthra, Dasypodidae) and revalidation of the genus Cryptophractus Fitzinger, 1856
(Magnolia Press, 2015)
The hairy long-nosed armadillo, currently referred as Dasypus (Cryptophractus) pilosus, is an enigmatic species endemic
to montane cloud forests and subparamo of Peruvian Andes. Its strikingly different external features, ...
Paternity Loss in Relation to Male Age, Territorial Behaviour and Stress in the Pied Flycatcher
(Blackwell, 2010)
For sexual selection to operate in monogamous species, males of poor
quality in some factor like age, ornamentation, condition or aggressiveness,
should lose paternity compared with higher quality males. We
tested this ...
Evidence for differential maternal allocation to eggs in relation to manipulated male attractiveness in the pied flycatcher (Ficedula hypoleuca)
(SPRINGER, 2006-10)
We present evidence of differential maternal allocation to eggs in response to manipulated male attractiveness in the migratory pied flycatcher (Ficedula hypoleuca). We manipulated the size of a male secondary sexual trait, ...
Freshwater turtles (Testudines: Pleurodira) in the Upper Cretaceous of Chilean Patagonia
(Elsevier, 2020)
We describe remains of freshwater turtles from the Upper Cretaceous of Chilean Patagonia. The fossils, which comprise isolated shell fragments and incomplete
appendicular bones, were recovered from meandering fluvial ...