13,785 research outputs found
Macroeducação e permacultura urbana: Análise do impacto da macroeducação em unidades familiares e a eficácia da adoção de tecnologia alternativa.
Resumo: A crescente urbanização tem acarretado grandes problemas com relação aos recursos hídricos disponíveis. A permacultura se apresenta como ferramenta socioambiental, e juntamente com os conceitos da bioconstrução servem de motivação à adoção de práticas sustentáveis numa relação de equilíbrio entre homem e natureza. A educação ambiental se propõe de forma pedagógica a estimular a formação de comunidades sustentáveis, por onde, segundo os conceitos da Macro-educação, é possível aplicar de uma forma eficaz e objetiva, o planejamento estratégico, estimulando a adoção de tecnologias sustentáveis e um uso mais consciente dos recursos naturais. Este trabalho visa sensibilizar a comunidade do bairro Jardim Santana no município de Campinas a adotar novos hábitos e atitudes ecologicamente corretos, e estimular a adoção de tecnologias alternativas como kit de captação de águas pluviais com garrafas pet, que terá como aplicação alternativa a irrigação da horta urbana, de uma unidade familiar, com o intuito de reduzir o consumo da água tratada disponibilizada pelas entidades locais. Abstract: Increasing urbanization has caused major problems in relation to the available water resources. The permaculture presents itself as a socio-environmental tool, and with the concepts of bio construction, is used as motivation for adoption of sustainable practices balancing man and nature. Environmental education is proposed as pedagogical to stimulate the sustainable communities generation, where, according to the concepts of Macro-education, it is possible to apply in an effective way and objective, the strategic planning, encouraging the adoption of sustainable Technologies and a conscious usage of the natural resources. This work aims to involve the community in Santana neighborhood in Campinas, to adopt new friendly environmental habits and attitudes and encourage adoption of alternative technologies to implement a kit of rainwater reception with pet bottles. This will be applied in irrigation of urban plantation at residential units, with the aim of reducing the cost of the treated water made available by the local authorities
Corrections to Capacitance Measurements in 2-Terminal Pair Bridges
Coaxial 2-terminal bridge comparison is a widely used metrological method in
the dissemination of value of capacitance up to 1000 pF and rad/s. In
this range, capacitance can be measured with uncertainties as small as few
parts in ; however, such measuments must take into account the
corrections due to the impedance of cables, connectors and ports, which can
tipically amount up to F/F and maybe larger. In this work,
we report on how correction factors in 2-terminal pair coaxial bridge
capacitance measurements are measured and calculated at Inmetro.Comment: 3 pages, 2 figures, 2 table
Magnetosonic Waves and Current Relaxation
In this work, inertial and diffusive effects are rediscussed on the propagation of magnetosonic waves in plasmas of finite conductivity, with basis on an extension of Ohm’s law. It is shown that when such effects are strong, the discussion can be pursued by defining suitably a perturbative parameter with the dimension of speed. The results presented here are part of a program which aims to investigate the influ-ence of inertia due to charged species on the propagation of hydromagnetic waves and instabilities in re-sistive plasmas
The Reckless Mind: Intellectuals in Politics, by Mark Lilla
The reckless mind: Intellectuals in politics is a disturbing and moving book
Inertial Effects on Tearing Instability
In this work, we explore inertial effects, due to charged species in a resistive plasma, on the tearing instability. The standard theory of tearing modes assumes a long wavelength limit. At shorter wave lengths, inertial effects can become important and the current density flowing in the fluid can acquire a finite relaxation time. The introduction of such a correction into the problem leads to an extension of the standard dispersion relation. In the long wave length limit, we recover the standard scaling of the growth rate γ with the plasma resistivity η, namely γ ≈ η3/5. However, in the short wavelength limit, we find that the scaling of γ with the relevant plasma parameters changes significantly due to the influence of inertia. Notwithstanding, the dependence of γ on the relaxation time of the current density is not determined. In order to achieve such a description, we propose to further rediscuss the problem in the framework of the boundary layer technique
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