Qualidade Físico-química E Sensorial De Genótipos De Banana

Despite the diversity of banana varieties in Brazil, only a few cultivars have the proper agronomic traits and fruit quality for commercial exploitation. This study aimed at evaluating the physicochemical traits and sensorial acceptance of banana genotypes, in order to identify those with potential for commercial growing. Six improved banana genotypes were assessed (BRS Maravilha, PC 0101, FHIA 18, TM 2803, YB 4203 and BRS Caipira), as well as three commercial cultivars (Grand Naine, Pacovan and Prata Anã). Analyses of peel and pulp color, peel thickness, pulp yield, moisture, pH, soluble solids, titratable acidity, total carotenoids and sensorial acceptance were performed. The BRS Maravilha, FHIA 18, YB 4203 and BRS Caipira genotypes presented physicochemical traits similar to the Grand Naine, Pacovan and Prata Anã commercial cultivars. The BRS Maravilha and TM 2803 genotypes had sensorial acceptance similar to the Prata Anã and Grand Naine cultivars, and are therefore promising for commercial growing, with the advantage of being resistant to the black Sigatoka and Panama disease. © 2016, Universidade Federal De Goias (UFG). All Rights Reserved.461899

Does carbon pricing reduce air travel? Evidence from the Australian 'Clean Energy Future' policy, July 2012 to June 2014

Aviation emissions are an important contributor to global climatic change. As growth in travel demand continues to outstrip improvements in the fuel efficiency of air travel, the aviation contribution to climate change is likely to grow substantially. Consequently, measures that effectively reduce travel demand are required if atmospheric carbon concentrations are to be limited. The efficacy of the Australian Clean Energy Future policy which placed a $23.00AUD (FY 2012) to$24.15 AUD (FY 2013) per tonne levy on carbon-dioxide equivalent emissions from July 2012 to June 2014 is tested. Specifically, time-series regression is used to estimate the effect of this carbon price policy on the level of domestic passenger kilometres flown in Australia, while adjusting for costs of production (i.e. fuel and labour costs), economic activity (i.e. gross domestic product), competitive effects (i.e. airline capacity), and exogenous shocks. There was no evidence that the carbon price reduced the level of domestic aviation in Australia. Carbon pricing measures may have to be levied at a greater rate to affect behavioural change, particularly given the limited potential for future aviation efficiency gains.The authors are grateful to Paul Peeters, NHTV Breda University of Applied Sciences, for his suggestion of several relevant papers

Local endothelial complement activation reverses endothelial quiescence, enabling t-cell homing, and tumor control during t-cell immunotherapy.

Cancer immunotherapy relies upon the ability of T cells to infiltrate tumors. The endothelium constitutes a barrier between the tumor and effector T cells, and the ability to manipulate local vascular permeability could be translated into effective immunotherapy. Here, we show that in the context of adoptive T cell therapy, antitumor T cells, delivered at high enough doses, can overcome the endothelial barrier and infiltrate tumors, a process that requires local production of C3, complement activation on tumor endothelium and release of C5a. C5a, in turn, acts on endothelial cells promoting the upregulation of adhesion molecules and T-cell homing. Genetic deletion of C3 or the C5a receptor 1 (C5aR1), and pharmacological blockade of C5aR1, impaired the ability of T cells to overcome the endothelial barrier, infiltrate tumors, and control tumor progression in vivo, while genetic chimera mice demonstrated that C3 and C5aR1 expression by tumor stroma, and not leukocytes, governs T cell homing, acting on the local endothelium. In vitro, endothelial C3 and C5a expressions were required for endothelial activation by type 1 cytokines. Our data indicate that effective immunotherapy is a consequence of successful homing of T cells in response to local complement activation, which disrupts the tumor endothelial barrier

Infant morbimortality due to acute diarrhoea in a metropolitan area of northeastern Brazil

Foi realizado inquérito domiciliar do tipo transversal abrangendo crianças menores de cinco anos residentes em 3 áreas da ilha de São Luís (Brasil): Vila Palmeira, Anjo da Guarda e São José de Ribamar. Aplicou-se um questionário onde se perguntou à mãe ou à pessoa responsável pela criança sobre a presença de diarréia nas duas últimas semanas. Foram realizados dois estudos censitários (maio de 1986 e 1989) e quatro amostragens sazonais (novembro de 1986, 1987 e 1988 e maio de 1989). A prevalência de diarréia foi maior em maio de 1986 e novembro de 1987; São José de Ribamar foi o local de maior prevalência; a distribuição dos casos por idade mostrou maior prevalência entre crianças de 6 a 11 meses e de 1 a 2 anos de idade; a prevalência da diarréia foi maior nas famílias que tinham como destino dos dejetos a maré e fossa negra; que se abasteciam de água de poço descoberto, nas famílias cujos pais eram desempregados e nas que depositavam o lixo na maré. A diarréia foi a principal causa de morte nos dois estudos censitários; a taxa de mortalidade infantil em maio de 1986 foi, respectivamente, de 44,0 por mil em menores de um ano e 12,8 por mil em menores de cinco anos; em maio de 1989 foi de 7,9 por mil e 4,9 por mil. As reduções na morbidade e mortalidade infantil por diarréia aguda entre 1986 e 1989 foram estatisticamente significantes.Six cross-sectional studies involving children under five years of age in three places on S. Luiz island, i.e., Vila Palmeira, Anjo da Guarda and S. José de Ribamar, were performed. A standardized questionnaire on the presence of diarrhoea in the previous 2 weeks was answered by the mothers or by those responsible for the children. Two population based studies (in May 1986 and May 1989) and four sample based surveys (in November of 1986, 1987 and 1988 and in May 1989) were carried out. The prevalence of diarrhoea was highest in May, 1986 and November, 1987. The highest prevalence occurred in S. José de Ribamar. The distribution of cases according to age showed a higher prevalence among children of 6-11 months and between 1 and 2 years of age. The prevalence of diarrhoea was highest among the families: that excreted directly into the sea or a latreen; that used water from uncovered wells; that threw their garbage into the sea; and whose bread-winners were unemployed. Diarrhoea was the principal cause of death in both surveys. Infant mortality, in May 1986, was 44.0 per thousand in children under 1 year of age and 12.8 in children under 5 years old; in May 1989 it was 7.9 per thousand and 4.9 per thousand respectively. The decrease in child morbidity and mortality due to diarrhoea between 1986 and 1989 was statistically significant

Morbimortalidade infantil por diarréia aguda em área metropolitana da região Nordeste do Brasil, 1986-1989

Six cross-sectional studies involving children under five years of age in three places on S. Luiz island, i.e., Vila Palmeira, Anjo da Guarda and S. José de Ribamar, were performed. A standardized questionnaire on the presence of diarrhoea in the previous 2 weeks was answered by the mothers or by those responsible for the children. Two population based studies (in May 1986 and May 1989) and four sample based surveys (in November of 1986, 1987 and 1988 and in May 1989) were carried out. The prevalence of diarrhoea was highest in May, 1986 and November, 1987. The highest prevalence occurred in S. José de Ribamar. The distribution of cases according to age showed a higher prevalence among children of 6-11 months and between 1 and 2 years of age. The prevalence of diarrhoea was highest among the families: that excreted directly into the sea or a latreen; that used water from uncovered wells; that threw their garbage into the sea; and whose bread-winners were unemployed. Diarrhoea was the principal cause of death in both surveys. Infant mortality, in May 1986, was 44.0 per thousand in children under 1 year of age and 12.8 in children under 5 years old; in May 1989 it was 7.9 per thousand and 4.9 per thousand respectively. The decrease in child morbidity and mortality due to diarrhoea between 1986 and 1989 was statistically significant.Foi realizado inquérito domiciliar do tipo transversal abrangendo crianças menores de cinco anos residentes em 3 áreas da ilha de São Luís (Brasil): Vila Palmeira, Anjo da Guarda e São José de Ribamar. Aplicou-se um questionário onde se perguntou à mãe ou à pessoa responsável pela criança sobre a presença de diarréia nas duas últimas semanas. Foram realizados dois estudos censitários (maio de 1986 e 1989) e quatro amostragens sazonais (novembro de 1986, 1987 e 1988 e maio de 1989). A prevalência de diarréia foi maior em maio de 1986 e novembro de 1987; São José de Ribamar foi o local de maior prevalência; a distribuição dos casos por idade mostrou maior prevalência entre crianças de 6 a 11 meses e de 1 a 2 anos de idade; a prevalência da diarréia foi maior nas famílias que tinham como destino dos dejetos a maré e fossa negra; que se abasteciam de água de poço descoberto, nas famílias cujos pais eram desempregados e nas que depositavam o lixo na maré. A diarréia foi a principal causa de morte nos dois estudos censitários; a taxa de mortalidade infantil em maio de 1986 foi, respectivamente, de 44,0 por mil em menores de um ano e 12,8 por mil em menores de cinco anos; em maio de 1989 foi de 7,9 por mil e 4,9 por mil. As reduções na morbidade e mortalidade infantil por diarréia aguda entre 1986 e 1989 foram estatisticamente significantes

Alterações na ultra-estrutura de genótipos de soja em resposta ao fornecimento de manganês em solução nutritiva

The deleterious effects of Mn stress on many species have been studied, mainly concerning biochemical, physiological and growth parameters of plants. However, there are few studies relating the anatomical and ultrastructural changes in response to manganese (Mn) nutritional disorders, This study examined the leaf ultrastructure of Mn-inefficient (IAC-15, Santa Rosa) and Mn-efficient (IAC-Foscarin 31) soybean (Glycine max L.) genotypes in response to three rates of Mn (0.5, 2 and 200 µmol L-1) in the nutrient solution. Symptoms of Mn deficiency developed 12 days after transplanting in IAC-15 and Santa Rosa, followed by IAC-Foscarin 31 on the 15th day. Only IAC-15 and Santa Rosa leaves showed symptoms of Mn toxicity. The Mn concentration in leaves ranged from 8.6 (deficiency) to 886.3 mg kg-1 d.w. (toxicity). There were no changes either in stomata length or stomata number per unit of leaf surface. Cytoplasm disorganization was observed in IAC-15 under Mn-excess. In this case, the cytoplasm was amorphous, densely stained and extensively disorganized, with increased vacuolation. Mn effects were not found in mitochondria and nucleus in any of the genotypes tested. Under all Mn concentrations, many lipid globules were observed in the IAC15 chloroplasts. There was an increase in the number of plastids as well as in the size of starch grains within IAC-Foscarin 31 chloroplasts as Mn concentration in the nutrient solution increased. Genotypes had marked differences in the ultrastructure organization, mainly in leaf chloroplasts grown under conditions of both Mn deficiency and toxicity (the most sensitive genotype was IAC-15).Os efeitos negativos provocados tanto pela deficiência quanto pela toxidez de manganês (Mn) no desenvolvimento das plantas têm sido avaliados, considerando-se os aspectos bioquímicos e produtivos da parte aérea, particularmente, onde os sintomas visuais são manifestados. Entretanto, há poucas informações na literatura abordando as alterações anatômicas e de ultra-estrutura, em relação ao suprimento de Mn. Os objetivos do presente estudo foram avaliar os efeitos do fornecimento de três doses de Mn (0,5; 2 e 200 µmol L-1), em solução nutritiva, nas ultra-estruturas de folhas de cultivares de soja Glycine max (L.): Santa Rosa, IAC-15 e IAC-Foscarin 31, contrastantes quanto à aquisição e ao uso do Mn. Os sintomas visuais de deficiência foram observados primeiramente em Santa Rosa e IAC-15 (ineficientes), os únicos a exibirem sintomas de toxidez. As concentrações de Mn nas folhas com sintomas variaram de 8,6 (deficiência) a 886,3 mg kg-1 (toxidez). Não houve alterações no comprimento e no número de estômatos nos limbos foliares. Em condição de toxidez, constatou-se no IAC-15, citoplasma desorganizado, vacuolado em excesso e denso evidenciando alterações nas membranas dos tilacóides. Não ocorreram alterações ultra-estruturais nas mitocôndrias e no núcleo das células dos três genótipos. Constatou-se presença de glóbulos de lipídios nos cloroplastos do cultivar IAC-15, em todas as condições de fornecimento de Mn. Houve aumento no número de plastídeos e grãos de amido, bem como no tamanho destes no IAC-Foscarin 31 com o suprimento de Mn. Os genótipos, tanto na condição de deficiência quanto de excesso, exibiram distintos graus de organização das ultraestruturas, notadamente, os cloroplastos. O IAC-15 exibiu maiores alterações das ultra-estruturas em função das desordens nutricionais em manganês