1,766 research outputs found
Life cycle assessment of photovoltaic implementation: an Italian case study
The energy efficiency is the possibility and ability to carry out a production process consume with the involves of less energy and minor environmental impact. Life Cycle Assessment is one of the major tools involved in the economic, social and environmental evaluation. The aim of this work is the LCA application to an Italian company that provides to install a photovoltaic plant for the energy self-maintenance, in order to break down costs and environmental impacts. The photovoltaic business can be an interesting solution especially for companies which consume more energy during the day. In the case study was highlighted that an average of 400.00 €/month was spent, equal to about 900 kWh / month. The company installed a 10 kWp photovoltaic system and with this implementation the energy consumption diminished of 84% and the costs of 57%
Spontaneous Magnetization through Non-Abelian Vortex Formation in Rotating Dense Quark Matter
When a color superconductor of high density QCD is rotating, superfluid
vortices are inevitably created along the rotation axis. In the color-flavor
locked phase realized at the asymptotically large chemical potential, there
appear non-Abelian vortices carrying both circulations of superfluid and color
magnetic fluxes. A family of solutions has a degeneracy characterized by the
Nambu-Goldtone modes CP2, associated with the color-flavor locked symmetry
spontaneously broken in the vicinity of the vortex. In this paper, we study
electromagnetic coupling of the non-Abelian vortices and find that the
degeneracy is removed with the induced effective potential. We obtain one
stable vortex solution and a family of metastable vortex solutions, both of
which carry ordinary magnetic fluxes in addition to color magnetic fluxes. We
discuss quantum mechanical decay of the metastable vortices by quantum
tunneling, and compare the effective potential with the other known potentials,
the quantum mechanically induced potential and the potential induced by the
strange quark mass.Comment: 24 pages, 4 figures; v2 revised published versio
Utilização de aplicativos Base e Calc do pacote BrOffice.org para criação de sistema de informação de pequeno porte.
Este artigo descreve uma forma de se criar um sistema de informação de pequeno porte usando as ferramentas Calc e Base e, com elas integradas, obtém-se uma ferramenta fácil de se usar e acessível a qualquer pessoa, sem custos. Um caso de estudo é mostrado para exemplificar o uso deste sistema
OGS NODC Meta-data standardization, discovery and reporting from a relational database
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Early childhood educator training: The value of educating educators on movement, play and physical literacy development - A three country case study.
A child's early movement and active play experiences influence their attitudes towards physical activity throughout their childhood and into adulthood (Blair, 1992). Yet, it has been suggested that early childhood educators (ECEs) may not recognize the importance of, or give enough attention to, movement skills and physical development opportunities for young children (Clark, 2014; Whitehead, 2010). The education, or lack thereof, that ECEs receive could be an important factor. International comparisons of overall ECE preparation and training have demonstrated that some countries' ECEs are more highly educated than others (Howells and Sääkslahti, 2019). Using a case study approach, this paper conducts an analysis and comparison of three countries to examine the value and role of physical activity/movement education for ECEs to enable them to support physical literacy development in early childhood educational settings. In addition, lessons learned from creating such educational opportunities in the context of their various locations (Manitoba in Canada, Kent in England, and Escambia County, FL in U.S.A.) are discussed. A purposeful sample was used as these countries have relatively low levels of educational requirements for ECEs, yet children start attending early years’ education from the earliest life points (Howells & Sääkslahti, 2019)
Robotic surgery for gynecologic cancers: indications, techniques and controversies.
Minimally invasive surgery for gynecologic cancers is associated with fewer postoperative complications including less blood loss and quicker recovery time compared to traditional laparotomy. The robotic platform has allowed patients access to minimally invasive surgery due to its increased utilization by gynecologic oncologists. Many surgeons have embraced the robotic platform due to its technological advances over traditional laparoscopy including high-definition 3D optics, wristed instrumentation, camera stability and improved ergonomics. While robotic surgery continues as a mainstay in the management of gynecologic cancers, it remains controversial in regards to its cost effectiveness and more recently, its long-term impact on clinical and oncologic outcomes. A strong component of the justification of this surgical platform is based on extrapolated data from traditional laparoscopy despite limited prospective randomized trials for robotic-assisted surgery. In this review, we highlight the use of robotic surgery in the management of gynecologic cancers in special populations: fertility sparing patients, the morbidly obese, the elderly, and patients with a favorable response to neoadjuvant chemotherapy
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