Is Latin America an Optimal Currency Area? Evidence from a Structural Vector Auto-regression analysis

This paper evaluates the advisability of a monetary union in Latin America applying the theory of optimum currency areas (OCA). The analysis, based on the traditional OCA criteria, suggests that there is no evidence for any monetary integration in Latin America, even at a sub-regional level. Latin American countries have evidenced a low degree of trade integration and asymmetric co-movements among their shocks. Moreover, important differences in the speed of adjustment and size of shocks are found. Higher policy coordination seems to be necessary before starting any economic integration process in Latin America.

Testing for Granger causality between stock prices and economic growth

This paper has focused on the relationship between stock market prices and growth. A Granger-causality analysis has been carried out in order to assess whether there is any potential predictability power of one indicator for the other. The conclusion that can be drawn is that stock market prices can be used in order to predict growth, but the opposite it is not true.

Only complete rejoining of DNA strand breaks after UVC allows K562 cell proliferation and DMSO induction of erythropoiesis

DNA strand breaks are early intermediates of the repair of UVC-induced DNA damage, however, since they severely impair cellular activities, their presence should be limited in time. In this study, the effects of incomplete repair of UVC-induced DNA strand breaks are investigated on K562 cell growth and the induction of erythroid differentiation by addition of DMSO to the cell culture medium. The kinetics were followed after UV irradiation by single cell gel electrophoresis, and in total cell population by alkaline or neutral agarose gel electrophoresis. Shortly after exposure, an extensive fragmentation occurred in DNA; DNA double strand breaks were negatively correlated with recovery time for DNA integrity. DNA damage induced by UVC 9 J/m2 rapidly triggered necrosis in a large fraction of irradiated K562 cells, and only 40% of treated cells resumed growth at a very low rate within 24 h of culture. The addition of DMSO to the culture medium of cells 15 min after UVC, when DNA strand break repair was not yet complete, produced apoptosis in >70% of surviving cells, as determined by TUNEL assay. Conversely, if DMSO was added when the resealing of DNA strand breaks was complete, surviving K562 cells retained full growth capacity, and their progeny underwent erythroid differentiation with normal levels of erythroid proteins, d-aminolevulinic acid dehydrase and hemoglobin. This study shows that the extent of DNA strand break repair influences cell proliferation and the DMSO induced erythroid program,and the same UVC dose can have opposite effects depending on cellular status

Gravidez ectópica cervical.

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Departamento de Tocoginecologia, Curso de Medicina, Florianópolis, 198

How mayors in Africa and Europe are working together to improve human mobility

COVID-19 will not stop the migration of people to cities. Marta Foresti (ODI/LSE) explains how mayors in Africa and Europe are collaborating to improve the lives of their residents and make their cities more welcoming

Human mobility and Covid-19: the EU migration pact is a first step, but does not go far enough

The Migration Pact is a first step in tackling the EU’s failures, but it does not go far enough. Marta Foresti (ODI/LSE) says national leaders need to put forward pragmatic proposals to address the reality of human mobility. Recognising and valuing the contribution of migrant workers during the COVID-19 pandemic would be a good start