Browsing Investigación by Title
Now showing items 11098-11117 of 19049
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Kalydria en Animatronics
(2010-07-06)Proyecto novedoso de educación ambiental utilizando animatronics (marionetas electrónicas inalámbricas). -
Karl Marx's Ecosocialism: Capital, Nature and the Unfinished Critique of Political Economy. Kohei Saito. (Nueva York: Monthly Review Press, 2017. 308 páginas)
(2020)Traducción de reseña: "Steve Knight. Karl Marx's Ecosocialism: Capital, Nature and the Unfinished Critique of Political Economy. Kohei Saito. (Nueva York: Monthly Review Press)". -
Karma, a new genus in the Pleurothallidinae (Orchidaceae)
(2023-06-29)The new generic name Karma (Orchidaceae: Pleurothallidinae) is proposed to substitute the concept of Tubella (Luer) Archila [2009], which is illegitimate on account of the prior homonym Tubella Archila [2006], a genus in ... -
Karyotype of the yellow-bellied sea snake, Pelamis platurus
(1980)In this paper we describe the karyotype of the yellow-bellied sea snake, Pelamis platurus from Costa Rica. The diploid number is 38 chromosomes, with 20 macrochromosomes and 18 microchromosomes. The pairs 1 and 2 are ... -
Kaurene diterpenes from Mikania vitifolia
(1998)From the aerial parts of Mikania vitifolia three new ent-kaurane diterpenes, ent-7α-cinnamoyloxy-15β-hydroxy-kaur-16-en-19-oic acid, ent-15β-cinnamoyloxy-7α-hydroxy-kaur-16-en-19-oic acid and ent-15β-hydroxy-7α-(E)-lachn ... -
Key events in microvascular damage induced by snake venom hemorrhagic metalloproteinases
(2011-08-24)Hemorrhage is one of the most significant effects in envenomings induced by viperid snakebites. Damage to the microvasculature, induced by snake venom metalloproteinases (SVMPs), is the main event responsible for this ... -
Key odor and physicochemical characteristics of raw and roasted jicaro seeds (Crescentia alata K.H.B.)
(2017)Jicaro seeds (Crescentia alata) are widely consumed in Central America, primarily as a popular tasty and nutritious beverage called “horchata”. Seeds are roasted to develop a specific aroma through a process that has never ... -
Key to the species of the genus Scleria (Cyperaceae) in Costa Rica based on the morphology of achenes
(2016)We described the achenes of 21 species of the genus Scleria reported in Costa Rica using 16 morphological characters and developed a key based only on achene characteristics. Specimens deposited in herbaria in Costa Rica ... -
KI 67 como factor pronóstico de recurrencia después de radioterapia adyuvante en pacientes con cáncer de mama temprano en el Hospital México del 01 de enero del 2010 al 31 de diciembre del 2011
(2021-03-10)El objetivo principal del estudio es determinar si el Ki67 muestra algún valor pronóstico para el tiempo de recurrencia en las pacientes con carcinoma de mama estadio clínico temprano que recibieron adyuvancia con radioterapia ... -
Kinesiological Factors in Vertical Jump Performance: Differences Among Individuals
(1997-02)The purpose of this study was to investigate the kinesiological factors that distinguish good jumpers from poor ones, in an attempt to understand the critical factors in vertical jump performance (VJP). Fifty-two normal, ... -
Kinesiological Factors in Vertical Jump Performance: Differences WITHIN Individuals
(1997-02)The purpose of this study was to examine the changes in both the coordination patterns of segmental actions and the dynamics of vertical jumping that accompany changes in vertical jump performance (VJP) occurring from trial ... -
Kinesiological Limits of Vertical Jump Performance
(1994)The purpose of this study was to investigate the kinesiological factors (strength of the lower limbs, and kinematics and dynamics of the jump) which distinguish good jumpers from poor ones, and also those which distinguish ... -
A kinetic study of carotenoid degradation during storage of papaya chips obtained by vacuum frying with saturated and unsaturated oils
(2020)The aim of the study was to evaluate the degradation kinetics of carotenoids (CTs) in vacuum-fried papaya (Carica papaya L.) chips (PCs) during storage at four temperatures (15, 25, 35 and 45 °C) for 52 and 94 days for the ... -
Kinetics of mass loss of arabica coffee during roasting process
(2016-03)Roasting is one of the most complex coffee processing steps due to simultaneous transfers of heat and mass. During this process, beans lose mass because of fast physical and chemical changes that will set color and flavor ... -
Kinetik und Thermodynamik einer thermischen Umlagerung in der λ5-Phosphorinreihe. Die Umlagerung von 1-Acetoxy-λ5-phosphorin* in 6-Acetyl-1-oxo-1λ5-phospha-2,,4-cyclohexadien
(1974-03)Beim Erhitzen von 1-Acetoxy-1-isopropoxy-2,4,6-triphenyl-λ5-phosphorin (1c) in 1,4-Dioxan entsteht 6c-Acetyl-1-isopropoxy-1r-oxo-2,4,6-triphenyl-1λ5-phospha-2,4-cyclohexadien (2c), das durch säurekatalysierte Epimerisierung ... -
Kinship, association, and social complexity in bats
(2019-01)Among mammals, bats exhibit extreme variation in sociality, with some species living largely solitary lives while others form colonies of more than a million individuals. Some tropical species form groups during the day ... -
Knock-down of synapsin alters cell excitability and action potential waveform by potentiating BK and voltage-gated Ca2+ currents in Helix serotonergic neurons
(2015)Synapsins (Syns) are an evolutionarily conserved family of presynaptic proteins crucial for the fine-tuning of synaptic function. A large amount of experimental evidences has shown that Syns are involved in the ...