Aplicação de fungicidas via água de irrigação por aspersão convencional para o controle da brusone (Pyricularia oryzae) em arroz.

Plantas de arroz da cultivar IAC-25 foram inoculadas aos 21 dias de idade com 5x10 conidios de Pyricularia oryzae/ml de suspensao. Parcelas de 12 x 12m foram irrigadas por 4 aspersoes setoriais (ZE-305). Os fungicidas foram aplicados atraves do Aplicador Portatil de Produtos Quimicos. Foram 5 as aplicacoes com intervalos de 7 a 10 dias, e inicio 15 dias apos a inoculacao. A lamina media de agua aplicada foi de 3,0mm. A porcentagem de brusone no "pescoco" da panicula e o peso em gramas de graos em 2000 paniculas foram de 8,1 e 11000; 41,4 e 9477, 84,9 e 7052 para os tratamentos trifenil hidroxido de estanho (750 g ia/ha), IBP (960 IA/HA) e testemunha sem fungicida respectivamente. O aumento de producao das parcelas tratadas com trienil hidroxido de estanho foi de 55,9% em relacao a testemunha. Os resultados mostraram a viabilidade da aplicacao de fungicidas via agua de irrigacao por aspersao convencional visando o controle da brusone em arroz

Cable robot for non-standard architecture and construction: A dynamic positioning system

In the past few years, cable-driven robots have received some attention by the scientific community and the industry. They have special characteristics that made them very reliable to operate with the level of safeness that is required by different environments, such as, handling of hazardous materials in construction sites. This paper presents a cable-driven robot called SPIDERobot, that was developed for automated construction of architectural projects. This robot has a rotating claw and it is controlled by a set of 4 cables that allow 4 degrees of freedom. In addition to the robot, this paper introduces a Dynamic Control System (DCS) that controls the positioning of the robot and assures that the length of cables is always within a safe value. Results show that traditional force-feasible approaches are more influenced by the pulling forces or the geometric arrangement of all cables and their positioning is significantly less accurate than the DCS. Therefore, the architecture of the SPIDERobot is designed to enable an easily scaling up of the solution to higher dimensions for operating in realistic environments.This work is partly funded by the project PTDC/ATPAQI/ 5124/2012 - Robotic Technologies for Non-Standard Design and Construction in Architecture. This work is also financed by the ERDF European Regional Development Fund through the COMPETE Programme (operational programme for competitiveness) and by National Funds through the FCT Portuguese Foundation for Science and Technology within project ”FCOMP - 01-0124-FEDER-022701”info:eu-repo/semantics/publishedVersio

The Differentiation and Promotion of Students’ Rights in Portugal

This investigation includes a differential study (Study 1) and a quasi-experimental research (Study 2). In Study 1, the objective was to establish to what extent students’ rights existed and analyse the differentiation between students’ rights with Portuguese and immigrant mothers, throughout school years. The sample consisted of 537 students with Portuguese and immigrant mothers, distributed by different school years (7th, 9th and 11th grades). The Children’s Rights Scale (Hart et al., 1996; Veiga, 2001) was used. In Study 2, the purpose was to analyse the effects on students’ rights of the use by teachers of a communicational intervention program, supervised by school psychologists. The sample involved 7th and 9th grade students, in a total of four classes, two forming the experimental groups (n = 36) and two the control groups (n = 43); as in Study 1, the Children’s Rights Scale was used. The results indicated the effectiveness of the communicational intervention program on students’ rights and are consistent with previous studies. An implication is that psychologists and teachers, working together and taking a human rights perspective, may develop an important role in projects to promote the students’ rights

Cartilage tissue engineering using electrospun PCL nanofiber meshes and MSCs

Mesenchymal stem cells (MSCs) have been recognized for their ability to differentiate into cells of different tissues such as bone, cartilage, or adipose tissue, and therefore are of great interest for potential therapeutic strategies. Adherent, colony-forming, fibroblastic cells were isolated from human bone marrow aspirates, from patients undergoing knee arthroplasties, and the MSCs phenotype characterized by flow cytometry. Afterward, cells were seeded onto electrospun polycaprolactone nanofiber meshes and cultured in a multichamber flow perfusion bioreactor to determine their ability to produce cartilagineous extracellular matrix. Results indicate that the flow perfusion bioreactor increased the chondrogenic differentiation of hBM-MSCs, as confirmed either by morphological and RT-PCR analysis. Cartilage-related genes such as aggrecan, collagen type II, and Sox9 were expressed. ECM deposition was also detected by histological procedures. Collagen type II was present in the samples, as well as collagen type I. Despite no statistically significant values being obtained for gene expression, the other results support the choice of the bioreactor for this type of culture.M. Alves da Silva would like to acknowledge the Portuguese Foundation for Science and Technology (FCT) for her grant (SFRH/BD/28708/2006). The authors would like to acknowledge the patients of Hospital de S. Marcos, Braga, Portugal, for the donation of the biological samples, as well to its medical staff. The authors would also like to thank the Institute for Health and Life Sciences (ICVS), University of Minho, Braga, Portugal, for allowing the use of their research facilities. Authors would like specially to acknowledge Luis Martins for his valuable help with the histological procedures and Goreti Pinto for the aid in the microscopy. We thank Ana M. Frias for the important help with the FACS procedure. Finally, we would like to acknowledge the European NoE EXPERTISSUES (NMP3-CT-2004-500283). This work was partially supported by the European FP7 Project Find and Bind (NMP4-SL-2009-229292)

Produção de biomassa (folhas, caules, raízes e inflorescências), relação folha/caule e rendimento de 4-Nerolidilcatecol de Pothomorphe peltata Miq., em função de espaçamentos, nas condições de Manaus-AM.

O objetivo deste estudo foi avaliar o melhor arranjo espacial para caapeba submetida ao cultivo, nas condições de Manaus-AM