Efficiency of soluble and insoluble sources of manganese for soybean nutrition in the Brazilian Cerrado

O objetivo deste trabalho foi avaliar a eficiência de fontes e doses de magnésio solúvel (MnSO4.H2O) e insolúvel (MnCO3) nos processos de absorção, transporte e redistribuição deste nutriente na soja (Glycine max), bem como na produtividade da cultura, em solo de Cerrado. O delineamento experimental foi em blocos ao acaso, em arranjo fatorial 4×2 – quatro doses (150, 250, 350 e 450 g ha-1) × duas fontes (MnSO4.H2O e MnCO3) de Mn –, com quatro repetições. Nas safras de 2015/2016 e 2016/2017, realizaram-se adubações foliares no terceiro trifólio e avaliaram-se os conteúdos de Mn e a produtividade da soja. Em ambas as safras, a fertilização foliar com Mn aumentou os teores do nutriente nas folhas, nos caules e nos grãos, mas não afetou o rendimento de grãos e a produção de matéria seca. Os teores máximos de Mn nas folhas foram obtidos com doses entre 150 e 450 g ha-1. A aplicação de MnSO4.H2O aumentou a absorção, o transporte e a redistribuição de Mn na planta, com desempenho superior ao de MnCO3. A fertilização foliar com MnSO4.H2O em soja, em solo de Cerrado, aumenta os teores de Mn nas folhas, mas não a produtividade e a produção de matéria seca.The objective of this work was to evaluate the efficiency of sources and rates of soluble (MnSO4.H2O) and insoluble (MnCO3) manganese on the processes of uptake, transport, and redistribution of this nutrient in soybean, as well as on crop yield, in Cerrado soil. The experimental design was randomized complete blocks in a 4×2 factorial arrangement – four rates (150, 250, 350, and 450 g ha-1) × two sources (MnSO4.H2O and MnCO3) of Mn –, with four replicates. In the 2015/2016 and 2016/2017 crop seasons, foliar fertilizations were carried out on the third trifoliate leaflet, and Mn content and soybean yield were evaluated. In both crop seasons, Mn foliar fertilization increased the contents of the nutrient in leaves, stems, and grains, but did not affect grain yield and dry matter production. The maximum Mn contents in leaves were obtained with rates between 150 and 450 g ha-1. The fertilization with MnSO4.H2O increased Mn uptake, transport, and redistribution in the plant, with a performance superior to that of MnCO3. Foliar fertilization with MnSO4.H2O in soybean, in a Cerrado soil, increases Mn contents in the leaves but not yield and dry matter production

O platô do VO2max não está associado à capacidade anaeróbia em indivíduos fisicamente ativos

The present study aimed to verify if the incidence of plateau is associated with anaerobic capacity. Therefore, nine physically active male (age: 23 ± 4 yr; body mass: 72.4 ± 8.2 kg; height: 176.4 ± 6.8 cm; VO2max: 41.3 ± 5.7 ml.kg-1.min-1) participated in the present study. The subjects in a cycle ergometer the following tests: a) maximum incremental test to determination of VO2max; b) six submaximal tests for determination of supra maximum demand of O2; c) supra maximum test for maximum accumulated oxygen deficit (MAOD) determination. The plateau was identified when the difference in the VO2 in the last two stages of incremental test was ≤ 2.1 ml.kg-1.min-1. It was observed an inverse correlation, although no significant, between MAOD and VO2 plateau (r = -0,61; p >; 0,05). Thus, it appears that anaerobic capacity is not a decisive factor for determining the incidence of VO2 plateau in physically active individuals.O presente estudo teve como objetivo verificar se a incidência do platô está relacionada com a capacidade anaeróbia. Para tanto, nove indivíduos fisicamente ativos (idade: 23 ± 4 anos; massa corporal: 72,4 ± 8,2 kg; estatura: 176,4 ± 6,8 cm; VO2max: 41,3 ± 5,7 ml.kg-1.min-1) participaram do presente estudo. Eles foram submetidos aos seguintes testes, realizados em cicloergômetro: a) um teste incremental máximo para a determinação do VO2max; b) seis testes submáximos para determinar a demanda supramáxima de O2; c) um teste supramáximo para a determinação do déficit máximo acumulado de oxigênio (MAOD). O platô foi caracterizado quando a diferença do VO2 entre os dois últimos estágios do teste incremental foi ≤ 2,1 ml.kg-1.min-1. Foi observada uma correlação inversa, porém não significante, entre e o MAOD e o platô do VO2 (r = -0,61; p >; 0,05). Dessa forma, parece que a capacidade anaeróbia não é fator decisivo para determinar a incidência de platô no VO2 em indivíduos fisicamente ativos

The effect of bevacizumab, 5-fluorouracil, and triamcinolone on the healing modulation of surgical wounds in rats

In this study, we aimed to analyze the effect of 5-fluorouracil, triamcinolone, and bevacizumab on scar modulation in an experimental rat model of surgical lesions. Rats (Rattus norvegicus albinus) were divided into four groups: bevacizumab, 5-fluorouracil + triamcinolone, bevacizumab + 5-fluorouracil + triamcinolone, and control (received no medication) groups. A linear, dorsal incision was created and sutured for the first intention wound healing, mimicking the surgical incision of upper blepharoplasty. Treatments were initiated on day 7, and the rats were euthanized on day 14. Only in the 5-fluorouracil + triamcinolone group was there a difference in the number of infiltrated monocytes. There was 56%, 86%, and 85% decrease in the number of neovessels in the bevacizumab, 5fluorouracil + triamcinolone, and bevacizumab + 5fluorouracil + triamcinolone groups, respectively, compared with the control. Picrosirius red staining showed higher collagen density and more organized collagen in the treatment groups than in the control group. Scar modulation was observed in all groups, but the 5-fluorouracil + triamcinolone group presented the best results. To our knowledge, this is the first study to evaluate the influence of three medications in combination on healing. When used together, these medications can prevent the development of unsightly scars, and are therefore promising alternatives to corticosteroids

In vitro evaluation of the efficacy of commercial disinfectants used in pre and post-dipping against Staphylococcus spp. isolated from bovine mastitis

Objetivou-se com este estudo avaliar a sensibilidade in vitro de Staphylococcus spp.frente a alguns desinfetantes comerciais utilizados no pré e pós-dipping em vacas leiteiras. Foram testados um total de 60 isolados de Staphylococcus spp. identificados como S. aureus (50) e Staphylococcus coagulase positiva (10) recuperados de glândulas mamárias de vacas com mastite subclínica procedentes das regiões Metropolitana do Recife, Agreste e Zona da Mata do Estado de Pernambuco. O estudo da eficácia dos desinfetantes utilizados no pré e pós-dipping foi realizado utilizando-se os seguintes princípios ativos: cloro (2,5%), iodo (0,57%), clorexidine (2,0%), amônia quaternária (4,0%) e ácido lático (2,0%) em quatro tempos distintos (15", 30", 60" e 300"). Observou-se que 100% de S. aureus foram sensíveis ao iodo, 93,3% sensíveis a clorexidine, 80% sensíveis a amônia, 35,6% sensíveis ao ácido lático e 97,8% resistentes ao cloro no tempo de 60". Com relação a Staphylococcus coagulase positiva (SCP), 100% dos isolados foram sensíveis ao iodo, 81,8% sensíveis a amônia quaternária, 99,9% sensíveis ao ácido lático, 72,7% sensíveis a clorexidine e 100% resistentes ao cloro no tempo de 60". Conclui-se que a maior atividade desinfetante in vitro foi verificada para o iodo e clorexidine frente a S. aureus e do iodo e ácido lático frente aos SCP e que há necessidade de avaliação periódica dos desinfetantes utilizados nas propriedades leiteiras nas regiões estudadas, pois, existem variações no perfil de sensibilidade e resistência aos desinfetantes que podem comprometer os programas de controle da mastite bovina causada por Staphylococcus spp.The objective of this investigation was to evaluate the in vitro sensibility of Staphylococcus spp. to several commercially available disinfectants used for pre and post dipping. A total of 60 isolates of Staphylococcus spp., identified as Staphylococcus aureus (50) and Positive coagulase Staphylococcus (10) were obtained from the mammary glands of dairy cows with subclinical mastitis in the regions of Metropolitan Recife, the Agreste and the Zona da Mata of the State of Pernambuco, Brazil. As active ingredients were used a chlorine base (25%), iodine (0.6%), chlorhexidine (2.0%), quaternary ammonium (4.0%), and lactic acid (2.0%) at four specific intervals (15", 30", 60", and 300"). One hundred percent of S. aureus was found to be sensitive to iodine, 93.3% to chlorhexidine, 80% to ammonia, 35.6% to lactic acid, and 97.8% were resistant to chlorine at a 60-minute interval. With respect to the Positive coagulase Staphylococcus (SCP), 100.0% of the isolates were sensitive to iodine, 81.8% to quaternary ammonium, 99.9% to lactic acid, 72.7% to chlorhexidine, and 100% was resistant to chlorine at an interval of 60 minutes. It can be concluded that the highest disinfectant activity in vitro was found to be with iodine and chlorhexidine for S. aureus, and with iodine and lactic acid for SCP. A further conclusion was that it is important to undertake a periodic evaluation of the disinfectants used on the dairy properties in the regions studied, given the variety of sensibilities and resistance to disinfectants used, which may prejudice the control of bovine mastitis caused by Staphylococcus spp

Seven new records of Myrtaceae in Brazil

Calyptranthes conduplicata, C. vexata, Eugenia moritziana, E. pusilliflora, Marlierea suborbicularis, Myrcia crispa and M. subcordifolia are new records for the Brazilian flora. All species except Eugenia moritziana, recorded from Espírito Santo state, are reported for the first time in Brazilian Amazonia. © 2015 Check List and Authors

Genotypic identification of Cryptosporidium spp. isolated from hiv-infected patients and immunocompetent children of São Paulo, Brazil

Cryptosporidium isolates identified in fourteen stool samples, collected from five HIV-infected patients and nine immunocompetent children, living in the Sate of São Paulo, Brazil, were submitted to a molecular analysis using a nested PCR followed of restriction fragment length polymorphism (RFLP), for genetic characterization. The analysis was based on digestion with RsaI restriction enzyme of a DNA fragment amplified from the Cryptosporidium oocyst wall protein (COWP) gene. Based on this analysis, four samples were identified as Cryptosporidium parvum, eight as Cryptosporidium hominis and two presented a profile that correspondedto Cryptosporidium meleagridis when compared to the standards used in the analysis. The use of molecular methods can be helpful to identify source of infections and risk factors related to Cryptosporidium infection in our communities.Isolados de Cryptosporidium identificados em quatorze amostras de fezes, coletadas de cinco pacientes com infecção por HIV e de nove crianças imunocompetentes, residentes no estado de São Paulo, Brasil, foram submetidos a análise molecular por Nested-PCR, seguido da caracterização genética por polimorfismo do tamanho do fragmento de restrição (RFLP). A análise foi baseada na digestão, com a enzima de restrição RsaI, de um fragmento de DNA amplificado do gene que codifica a proteína de parede do oocisto de Cryptosporidium (COWP). Baseado nesta análise, quando comparadas aos padrões utilizados, quatro amostras foram identificadas como Cryptosporidium parvum, oito como Cryptosporidium hominis e duas apresentaram um perfil correspondente ao de Cryptosporidium meleagridis. O uso de métodos moleculares pode ser útil para identificar a fonte das infecções e os fatores de risco relacionados à infecção por Cryptosporidium em nossas comunidades

“Out for Delivery”: Pleasure and Suffering in the Work of Application Deliverers

This research aimed to investigate the causes of pleasure and suffering of application deliverers. The study stands out for promoting the understanding of the work context that gives rise to the main causes of physical and mental illness of application deliverers, providing subsidies for the psychodynamics of work, for the construction and analysis of demand and for the service given the increase in this group of workers. This is a qualitative research, carried out through semi-structured interviews with 11 agents. The interview script was inspired by the scale of indicators of pleasure and suffering at work and the assessment scale of work-related harm, both belonging to the inventory on work and risks of illness, prepared by Mendes and Ferreira (2007). The results indicate that work provides both pleasure and suffering, although situations stand out in which delivery men expose feelings of suffering associated with the activity they perform. The main motivations are survival and lack of bureaucracy to start the activity, even though there are no labor rights and guarantees. The damage caused by work is related to the high emotional cost, lack of motivation, desire to give up the activity, loneliness and pain in the body and head. This study contributes to the scientific field of pleasure and suffering at work, emphasizing that there is a need for public policies to formalize this category of work to guarantee its basic needs

Elementos do trabalho voluntário: motivos e expectativas na pastoral da criança de João Pessoa/PB

Volunteer work has grown significantly and has had an important role in society. It is therefore important to establish the motivations that lead volunteers to give up their own good for the welfare of other people. Thus, this study aims at investigating the reasons and expectations of volunteers who work for the Pastoral da Criança. The survey was conducted among volunteers linked to twenty-five parishes in the city of João Pessoa. The data collection instrument was a questionnaire, based on Souza, Medeiros and Fernandes (2006). A hundred and fifty seven questionnaires were collected. The data was analysed, in the first section, using statistical measures (mean and standard deviation), and, in the second and third sections, using percentage. The "affective" and "selfless" profiles predominate in volunteer work, which characterises volunteers who are interested in the local recovery of citizenship and who have a high degree of selflessness.O trabalho voluntário tem crescido expressivamente e possui um papel importante na sociedade. Assim, é importante delinear as motivações que levam voluntários a renunciarem ao benefício próprio, doando tempo e talentos em prol do outro. Este estudo tem por objetivo pesquisar os motivos e expectativas dos voluntários que atuam na Pastoral da Criança. Foi realizada com voluntários ligados a vinte e cinco paróquias de João Pessoa/PB distribuídas entre vários bairros desta cidade Por meio de 157 questionários. O instrumento de coleta de dados aplicado foi um questionário baseado em Souza, Medeiros e Fernandes (2006) e dividido em três seções. O tratamento dos dados foi feito a partir de medidas estatísticas (média e desvio-padrão) – na primeira seção – e utilização de percentagens – na segunda e terceira seções. Os perfis “afetivo” e “altruísta” predominam na realização do trabalho voluntário, caracterizando um voluntariado com interesse no resgate da cidadania e elevado grau de abnegação