Common adversaries form alliances: modelling complex networks via anti-transitivity

Anti-transitivity captures the notion that enemies of enemies are friends, and arises naturally in the study of adversaries in social networks and in the study of conflicting nation states or organizations. We present a simplified, evolutionary model for anti-transitivity influencing link formation in complex networks, and analyze the model's network dynamics. The Iterated Local Anti-Transitivity (or ILAT) model creates anti-clone nodes in each time-step, and joins anti-clones to the parent node's non-neighbor set. The graphs generated by ILAT exhibit familiar properties of complex networks such as densification, short distances (bounded by absolute constants), and bad spectral expansion. We determine the cop and domination number for graphs generated by ILAT, and finish with an analysis of their clustering coefficients. We interpret these results within the context of real-world complex networks and present open problems

A soja no Brasil: história e estatística.

Origem e distribuicao no mundo; Introducao e primeiras experiencias no Brasil; Evolucao da producao; Destino da producao; Capacidade de processamento; Portos de embarque; Meios de transporte; Precos recebidos pelos produtores; Custos de producao.bitstream/item/23236/1/Doc21.pd

Desempenho de cultivares de soja em áreas com diferentes niveis de infestação de Phialophora gregata.

bitstream/item/133629/1/ID10587-1992-1993sojaresultados-p107-110.pdfTrabalho apresentado na XXI Reunião de Pesquisa de Soja da Região Sul, Santa Rosa, 1993

Comportamento de genótipos de soja em relação a acidez do solo.

bitstream/item/133644/1/ID10195-1992-1993sojaresultados-p122-129.pdfTrabalho apresentado na XXI Reunião de Pesquisa de Soja da Região Sul, Santa Rosa, 1993

Metabolic reprogramming promotes myogenesis during aging

Sarcopenia is the age-related progressive loss of skeletal muscle mass and strength finally leading to poor physical performance. Impaired myogenesis contributes to the pathogenesis of sarcopenia, while mitochondrial dysfunctions are thought to play a primary role in skeletal muscle loss during aging. Here we studied the link between myogenesis and metabolism. In particular, we analyzed the effect of the metabolic modulator trimetazidine (TMZ) on myogenesis in aging. We show that reprogramming the metabolism by TMZ treatment for 12 consecutive days stimulates myogenic gene expression in skeletal muscle of 22-month-old mice. Our data also reveal that TMZ increases the levels of mitochondrial proteins and stimulates the oxidative metabolism in aged muscles, this finding being in line with our previous observations in cachectic mice. Moreover, we show that, besides TMZ also other types of metabolic modulators (i.e., 5-Aminoimidazole-4-Carboxamide Ribofuranoside-AICAR) can stimulate differentiation of skeletal muscle progenitors in vitro. Overall, our results reveal that reprogramming the metabolism stimulates myogenesis while triggering mitochondrial proteins synthesis in vivo during aging. Together with the previously reported ability of TMZ to increase muscle strength in aged mice, these new data suggest an interesting non-invasive therapeutic strategy which could contribute to improving muscle quality and neuromuscular communication in the elderly, and counteracting sarcopenia

Identificação de genótipos de soja resistentes a antracnose, a queima da haste e da vagem e a mancha purpura.

bitstream/item/133904/1/ID10222-1990-1991sojaresultados-p81-83.pdfTrabalhos apresentados na XIX Reunião de Pesquisa de Soja da Região Sul, Pelotas, 1991

Avaliação da reação de genótipos de soja ao cancro da haste, em casa de vegetação.

Identificar genótipos resistentes ao cancro da haste, causado por Diaporthe phaseolorum f. sp. meridionalis, visando o melhoramento genético de soja (Glycine max) e o desenvolvimento de cultivares resistentes.bitstream/item/134562/1/ID10589-1993-1994sojaresultados-p57-59.pdfTrabalho apresentado na XXII Reunião de Pesquisa de Soja da Região Sul, Cruz Alta, 1994

Soja: resultados de pesquisa, 2001/2002 e 2002/2003.

bitstream/item/84373/1/CNPT-DOC.-39-03.pdfTrabalhos apresentados na XXX Reunião de Pesquisa de Soja da Região Sul, Cruz Alta, 2002, e na XXXI Reunião de Pesquisa de Soja da Região Sul, Porto Alegre, 2003

Avaliação da reação de genótipos de soja a cancro da haste. (a)

Trabalho apresentado na XXVII Reunião de Pesquisa de Soja da Região Sul, Chapecó, 1999

Quantificação de propagulos de Phialophora gregara em restos culturais de soja.

Trabalho apresentado na XXVII Reunião de Pesquisa de Soja da Região Sul, Chapecó, 1999