نتایج جستجو برای: crepis
تعداد نتایج: 212 فیلتر نتایج به سال:
Given the ecological and epidemiological specialization of Hyalesthes obsoletus, principle vector ‘Candidatus Phytoplasma solani’, primary objective this study was to develop molecular tools for discriminating three host plant associations populations: (i) Convolvulus arvensis–Urtica dioica (Ca–Ud), (ii) Vitex agnus-castus (Vac), (iii) Crepis foetida (Cf). The genetic diversity nearly full-leng...
A decision maker is characterized by two binary relations. The first reflects decisions that are rational in an “objective” sense: the decision maker can convince others that she is right in making them. The second relation models decisions that are rational in a “subjective” sense: the decision maker cannot be convinced that she is wrong in making them. We impose axioms on these relations that...
Chapter 1 examines whether immigrants gain a comparative advantage relative to natives in highly protected labor markets. This may be the case if immigrants, being new to the country, are less aware of employment protection regulations and less likely to claim their rights. I test this hypothesis drawing on evidence for the EU and on two natural experiments for Spain and Italy. The results sugg...
We examine the effect of regularly scheduled macroeconomic announcements on the beliefs and preferences of participants in the U.S. Treasury market by comparing the option-implied state-price density (SPD) of bond prices shortly before and after the announcements. We find that the announcements reduce the uncertainty implicit in the second moment of the SPD regardless of the content of the news...
PURPOSE The present study was carried out to evaluated acute and subacute toxicity of a hydroalcoholic extract from aerial parts of Wedelia paludosa (Asteraceae). METHODS Toxicity of W. paludosa was evaluated in Swiss mice after ingestions of the extract during one day (acute model) and during 15 days (subacute model). RESULTS The results showed that the LD50 of the extract is higher than 4...
Mobility within the European Union (EU) brings great opportunities and large overall benefits. Economically stagnant areas, however, may be deprived of talent through emigration, which may harm dynamism and delay political, and economic, change. A significant episode of emigration took place between 2010 and 2014 from Italy following the deep economic recession beginning in 2008 that hit most a...
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