5 research outputs found
Emotion and Metacontrol
In the ICEA Project we are concerned with the extraction of general designs from rat brains.
We are interested in designs that capture the core integrational aspects of emotion and cognition
Resistance to permethrin in Aedes aegypti (L.) in Northern MĂ©xico.
Diagnostic dose (DD) of permethrin was determined in Aedes aegypti (L.), from three states (Coahuila, Sonora, and Tamaulipas) in northern Mexico. After exposing 10 groups of 100 females to the DD obtained and producing 50% mortality, individuals were divided into two categories: survivors and dead. Mosquitoes in each of these categories were dissected to separate the head, thorax, and abdomen. Biochemical tests were done on the head and thorax to determine activity by resistance-related enzymes including: α and ÎČ-esterases, mixed-function oxidases (MFOs), glutathione-S-transferase (GST) and insensitive acetyl cholinesterase (iAChE). Results were compared with those for a susceptible strain of Ae. aegypti from New Orleans. A population from Coahuila showed iAChE as the only enzyme activity that surpassed the threshold established with the susceptible strain, however, this mechanism is not associated with resistance to pyrethroids, but rather with resistance to organophosphate and carbamate insecticides. For the populations from Tamaulipas, none of the mechanisms studied were important in conferring resistance to permethrin. MFOs were present at elevated levels of activity, appearing as the main detoxifying mechanism, in the population from Sonoita, Sonora state
In vitro antioxidant, antimutagenic and antiproliferative activities of collagen hydrolysates of jumbo squid (Dosidicus gigas) byproducts
AbstractHydrolysates from two different jumbo squid byproducts (fins and arms), produced by trypsin and protease type XIV were compared on the basis of their antioxidant (DPPH and ABTS radical scavenging assays), antimutagenic (Ames test) and antiproliferative (Transformation cell proliferation in M12.C3F6 murine cells) activities. Jumbo squid arms had higher content of collagen than fins, and their hydrolysates had the highest antioxidant activity. Also, jumbo squid arm-derived collagen hydrolyzed with protease XIV showed the highest antimutagenic activity. The four hydrolysates obtained showed low antiproliferative activity, however they are susceptible for further studies to be applied as food additives
ContribuiçÔes da Sociologia na AmĂ©rica Latina Ă imaginação sociolĂłgica: anĂĄlise, crĂtica e compromisso social Sociology's contribution in Latin America to sociological imagination: analysis, critique, and social commitment
O artigo aborda o papel desempenhado pela Sociologia na anĂĄlise dos processos de transformação das sociedades latino-americanas, no acompanhamento do processo de construção do Estado e da Nação, na problematização das questĂ”es sociais na AmĂ©rica Latina. SĂŁo analisados seis perĂodos na Sociologia na AmĂ©rica Latina e no Caribe: I) a herança intelectual da Sociologia ; II) a sociologia da cĂĄtedra; III) O perĂodo da "Sociologia CientĂfica" e a configuração da "Sociologia CrĂtica"; IV) a crise institucional, a consolidação da "Sociologia CrĂtica" e a diversificação da sociologia; V) a sociologia do autoritarismo, da democracia e da exclusĂŁo; VI) a consolidação institucional e a mundialização da sociologia da AmĂ©rica Latina (desde o ano de 2000), podendo-se afirmar que os traços distintivos do saber sociolĂłgico no continente foram: o internacionalismo, o hibridismo, a abordagem crĂtica dos processos e conflitos das sociedades latino-americanas e o compromisso social do sociĂłlogo.<br>The article focuses on the role played by Sociology in the analysis of processes of change in Latin American societies, in the process of construction of Nation and State, in the debate of social issues in Latin America and the Caribbean. Six periods in Sociology in Latin America and the Caribbean are examined: I) sociology's intellectual legacy; II) sociology as a cathedra; III) the period of "Scientific Sociology"; IV) the institutional crisis, the consolidation of "Critical Sociology", and the diversifying of sociology; V) sociology of authoritarianism, democracy and exclusion; VI) institutional consolidation and globalization of Latin American sociology (since 2000). It may be said that the distinctive features of sociological knowledge in the continent were: internationalism, hybridism, the critical approach to processes and conflicts of Latin American societies, and the sociologist social commitment