Search results for "LAB"
showing 10 items of 7932 documents
Naturally occurring hemolysins in the coelomic fluid of Holothuria polii delle chiaie (Echinodermata).
1979
Abstract The coelomic fluid of Holothuria polii D.Ch contains hemolytic activity against erythrocytes of several vertebrate species. The hemolytic potency depends upon calcium ion concentration and varies according to erythrocyte source and cell number in the reaction mixture. Absorption experiments with formalinized rabbit erythrocytes suggest that hemolytic activity is not specific. Its heat lability, water insolubility at low pH values, and sensitivity to proteolytic enzymes suggest that hemolytic activity resides in protein molecules. The activity, maximal in alkaline media, appears to depend up time and temperature.
A cross-country study of skills and unemployment flows
2021
AbstractUsing an international survey that directly assesses the cognitive skills of the adult population, I study the relation between skills and unemployment flows across 37 countries. Depending on the specifically assessed domain, I document that skills have an unconditional correlation with the log-risk-ratio of exiting to entering unemployment of 0.65–0.68 across the advanced and skill-abundant countries in the sample. The relation is remarkably robust and it is unlikely to be due to reverse causality. I do not find evidence that this positive relation extends to the seven relatively less advanced and less skill-abundant countries in the sample: Peru, Ecuador, Indonesia, Mexico, Chile,…
Analysis of a questionnaire to assess materials produced by teachers in a collaborative space for educational innovation
2014
En este trabajo se han elaborado nuevos materiales de innovación educativa (http://www.uv.es/innovamide). El objetivo del proyecto es el establecimiento de un espacio colaborativo, en el que los profesores puedan implementar materiales, esquemas y otros elementos de apoyo visual al proceso de aprendizaje que hayan sido previamente evaluados y verificados. Para ello, se ha elaborado un cuestionario de evaluación de los materiales, al que se ha aplicado un análisis de jueces para asegurar la validez de contenido y de constructo. Posteriormente, se aplicó a alumnos de varias titulaciones. Los resultados muestran un elevado nivel de satisfacción y utilidad con los materiales elaborados. Son una…
Análisis de un cuestionario para evaluar materiales elaborados por personal docente en un espacio colaborativo para la innovación educativa
2014
En este trabajo se han elaborado nuevos materiales de innovación educativa (http://www.uv.es/innovamide). El objetivo del proyecto es el establecimiento de un espacio colaborativo, en el que los profesores puedan implementar materiales, esquemas y otros elementos de apoyo visual al proceso de aprendizaje que hayan sido previamente evaluados y verificados. Para ello, se ha elaborado un cuestionario de evaluación de los materiales, al que se ha aplicado un análisis de jueces para asegurar la validez de contenido y de constructo. Posteriormente, se aplicó a alumnos de varias titulaciones. Los resultados muestran un elevado nivel de satisfacción y utilidad con los materiales elaborados. Son una…
"Por si las flais, ni flowers y en off": morphology of loanwords from english as idiomatic words in spanish idioms.
2020
En el presente artículo pretendemos ofrecer un análisis de la configuración formal de un tipo muy concreto de palabras idiomáticas: tres préstamos léxicos procedentes de la lengua inglesa que sobreviven insertos en locuciones españolas. Para ello, delimitaremos en primer lugar los conceptos de palabra idiomática, préstamo léxico y anglicismo. A continuación explicaremos el procedimiento metodológico para recopilar este tipo de piezas léxicas en dos diccionarios generales actuales del español, el DLE y el DEA, basado en el especial tratamiento lexicográfico que estas reciben debido a sus características, limitándonos a las unidades fraseológicas que conocemos como locuciones. Realizaremos un…
Immigration, factor endowments and the productive structure of Spanish regions, 1996-2005.
2012
The participation of immigrants in the Spanish labour market has increased from less than 3% in 1996 to more than 13% in 2005. The factor proportion model of production was used to examine the impact of such a large labour supply shock on the industrial structure of Spanish regions. The results confirm that, first, labour endowment differences across regions help to explain the regional patterns of industry specialization. Second, immigrants and natives act as complementary factors in most industries. Third, the importance of immigration is relatively small compared with production technique changes and idiosyncratic industry changes in explaining the overall changes in industrial structure. …
¿Por fin la izquierda?
2000
Quattro anni di attivita' del progetto 'Lauree scientifîche - Fisica' nell'Ateneo di Palermo
2009
What’s in a name : the effect of category labels on teachers’ beliefs.
2019
In this paper, we report an investigation of the possible influence on teachers’ essentialist thinking and efficacy beliefs of category labels used to describe children’s educational difficulties. A 2x2x2 counterbalanced design was employed in which primary school teachers in Finland and the UK were exposed to vignettes that portrayed a child exhibiting difficulties in one of two domains: either behaviour or reading. Vignettes were presented in two versions. In one, the child was labelled as having either ‘ADHD’ or ‘Dyslexia’; in the alternate condition, no such label was ascribed, descriptions were identical in all other respects. Participating teachers were presented with two vignettes, o…