Listar por título
Mostrando ítems 18817-18836 de 34169
-
Involvement of midbrain tectum neurokinin-mediated mechanisms in fear and anxiet
(2012)Electrical stimulation of midbrain tectum structures, particularly the dorsal periaqueductal gray (dPAG) and inferior colliculus (IC), produces defensive responses, such as freezing and escape behavior. Freezing also ensues ... -
Involvement of Plant Hormones and Plant Growth Regulators on in vitro Somatic Embryogenesis
(2005-11)In spite of the importance attained by somatic embryogenesis and of the many studies that have been conducted on this developmental process, there are still many aspects that are not fully understood. Among those features, ... -
Iodine Quantification to Distinguish Clear Cell from Papillary Renal Cell Carcinoma at Dual-Energy Multidetector CT: A Multireader Diagnostic Performance Study
(2014-08)Purpose: to investigate whether dual-energy multidetector row computed tomographic (CT) imaging with iodine quantification is able to distinguish between clear cell and papillary renal cell carcinoma (RCC) subtypes. Materials ... -
Ipecacuana. Un Producto no Maderable Cultivado Bajo el Bosque en Costa Rica. 1980-2000
(2006-09-11)La ipecacuana o raicilla, hierba nativa de América, es la única planta medicinal del trópico húmedo de Costa Rica cultivada bajo el bosque. Es cultivada en la región Huetar Norte, limítrofe con Nicaragua; la raíz seca de ... -
La (ir)racionalidad en la apreciación de la prueba en el proceso penal
(2021)La investigación describe la forma en la que los tribunales de justicia analizan la prueba y deciden los hechos de un caso. El fin del trabajo consiste en presentar desde una perspectiva realista cómo funciona en la práctica ... -
Iridiscencia foliar
(2020)La iridiscencia en plantas es un fenómeno óptico producido por la interacción entre la luz y la estructura de las células, lo que origina un color estructural (no intervienen pigmentos). La luz que incide en las hojas puede ... -
Iris Scaccheri, la danza de las metáforas
(2019)A partir de una breve revisión en torno a un archivo inédito de danzas, testimonios y escritos de la coreógrafa, bailarina, escritora Iris Scaccheri (1939-2014) nos centraremos en la cuestión de la subjetividad en sus ... -
IRONÍA, DEPENDENCIA Y HUMOR EN LA PRODUCCIÓN SIGNIFICANTE LATINOAMERICANA
La intención de este artículo no es otra que la de exponer, teóricamente, una serie de inquietudes en torno a la ironia, tan usual en los textos escritos, las conversaciones y, sobre todo, en la actitud general del ... -
Irreversibility in an ideal fluid
(2014-10)When a real fluid is expelled quickly from a tube, it forms a jet separated from the surrounding fluid by a thin, turbulent layer. On the other hand, when the same fluid is sucked into the tube, it comes in from all ... -
Irreversibility of mechanical and hydrodynamic instabilities
(2017-12-01)The literature on dynamical systems has, for the most part, considered self-oscillators (i.e., systems capable of generating and maintaining a periodic motion at the expense of an external energy source with no corresponding ... -
La irrupción de lo "ominoso" en la construcción de los cuerpos femeninos en "Las cosas que perdimos en el fuego" de Mariana Enríquez
(2020)Esta tesis consiste en el estudio de cuatro relatos del cuentario Las cosas que perdimos en el fuego de la autora de terror argentina Mariana Enríquez. Los cuentos estudiados son: “La casa de Adela”, “Fin de curso”, “Nada ... -
Is birdsong music? Evaluating harmonic intervals in songs of a Neotropical songbird
(2012)Signals in animal communication are commonly judged as aesthetically appealing by human standards. This is particularly common for birdsong, often equated to musical compositions. No formal test, however, has analysed ... -
Is black plumage an adaptation to high elevations in a cosmopolitan bird genus?
(2019)Black plumage is expected to absorb and retain more heat and provide better protection against UV radiation compared with lighter plumages. Black plumage is common in species of the genera Turdus and Platycichla that inhabit ... -
Is it necessary to change Anglo-American Cataloguing Rules (AACR) for Resource, Description and Access (RDA)?
(2015-01-01)While debate on the implementation of RDA in bibliographic description processes continues, it is important to know why AACR appeared, how functional they have been up to now, and how technological progress has affected ... -
Is it possible to modify the obesogenic environment? - Brazil case
(2019)In recent decades, the prevalence of obesity has reached increasingly high rates among children and adolescents worldwide as the result of interactions between obesogenic environments and genetics. In Brazil, a middle-income ... -
Is Latin America starting to retreat from early and universal childbearing?
(2009-02-20)The 2000 censuses show that the proportion of women below age 30 who are mothers has dropped substantially in most Latin America countries, suggesting that the social imperative of early motherhood, which has long prevailed ... -
Is mating in the Túngara Frog (Engystomops pustulosus: Leptodactylidae) random or non-random?
(2017)Random and non-random mating result from sexual selection, and both can occur across populations of the same species. Body size is a trait commonly used to determine if mating is random or non-random, and for the latter ...