227 research outputs found

    Effect of Soil Treatment on the Dynamic Response of Machine Foundations

    Get PDF
    Improvement of foundation soils using existing treatment techniques such as chemical, compaction and jet grouting can significantly enhance the general load bearing capacity of foundations. This paper describes the effect of soil treatment on the dynamic response of a rigid foundation subjected to steady-state, lCM-amplitude high-frequency vibrations, such as those encountered in machine foundation problems. Dynamic finite element analysis were performed to evaluate the effect of soil treatment as a function of treatment type and geometry. The treatment of foundation soil significantly reduced the amplitude of vibration of the foundation with the reduction being highly dependent on the type and geometry (i.e., width and depth) of the treated zone

    Eficiência de fungicidas para o controle da ferrugem-asiática da soja, Phakopsora pachyrhizi, na safra 2011/12: resultados sumarizados dos ensaios cooperativos.

    Get PDF
    Material e método: Tabela 1 - Instituições, locais, cultivares, datas da semeadura da soja, presença (1) ou ausência (0) de sintomas de ferrugem na primeira aplicação de fungicida (incidência - INC). Tabela 2 - Ingrediente ativo (i.a.), produto comercial (p.c.) e dose dos fungicidas nos tratamentos para o controle da ferrugem-asiática da soja, safra 2011/12. Resultados e discussões: Figura 1 - Box plot da porcentagem de controle da ferrugem, para os diferentes tratamentos com fungicidas, em relação à média da severidade da testemunha sem controle (T1). Figura 2 - Box plot da porcentagem de redução da produtividade, para os diferentes tratamentos com fungicidas, em relação à média da produtividade do melhor tratamento. Tabela 3: Severidade da ferruge, porcentagem de controle em relação à testemunha sem tratamento, produtividade (Kg ha-1) e porcentagem de redução de produtividade (RP) em relação ao tratamento com a maior produtividade, para os diferentes tratamentos. Média de 11 ensaios para severidade e de 15 ensaios para produtividade. Rede de ensaios cooperativos, safra 2011/12.bitstream/item/61841/1/CT93.2012.pd

    New insights about host response to smallpox using microarray data

    Get PDF
    <p>Abstract</p> <p>Background</p> <p>Smallpox is a lethal disease that was endemic in many parts of the world until eradicated by massive immunization. Due to its lethality, there are serious concerns about its use as a bioweapon. Here we analyze publicly available microarray data to further understand survival of smallpox infected macaques, using systems biology approaches. Our goal is to improve the knowledge about the progression of this disease.</p> <p>Results</p> <p>We used KEGG pathways annotations to define groups of genes (or modules), and subsequently compared them to macaque survival times. This technique provided additional insights about the host response to this disease, such as increased expression of the cytokines and ECM receptors in the individuals with higher survival times. These results could indicate that these gene groups could influence an effective response from the host to smallpox.</p> <p>Conclusion</p> <p>Macaques with higher survival times clearly express some specific pathways previously unidentified using regular gene-by-gene approaches. Our work also shows how third party analysis of public datasets can be important to support new hypotheses to relevant biological problems.</p
    corecore