8,636 research outputs found
Sustainability and the City: New Kensington CDC's Sustainable 19125 Initiative
New Kensington Community Development Corporation (NKCDC), an organization long dedicated to revitalizing the East Kensington, Fishtown, and Port Richmond neighborhoods of Philadelphia, launched an urban sustainability initiative in 2009 called "Sustainable 19125." The initiative's goal is to make the 19125 ZIP code the most sustainable ZIP code in the city
Star forming regions in gas-rich SO galaxies
The first results of an H alpha imaging survey of HI rich SO galaxies, which were searched for HII regions and other sources of emission, are presented. The charge coupled device H alpha interference filter images were made of 16 galaxies. Eight of these galaxies show evidence for on-going star formation, one has nuclear emission but no HII regions, and the remaining seven have no emissions detected within well defined upper limits. With the exception of one notably peculiar galaxy in which the emission from HII regions appears pervasive, the HII regions are either organized into inner-disk rings or randomly distributed throughout the disk. A few of these galaxies are found to be clearly not SO's; or peculiar objects atypical of the SO class. Using simple models star formation rates (SFRs) and gas depletion times from the observed H alpha fluxes were estimated. In general, the derived SFRs are much lower than those found in isolated field spiral galaxies and the corresponding gas depletion time scales are also longer
The Cowl - v.31 - n.10 - Nov 29, 1978
The Cowl - student newspaper of Providence College. Volume 31, Number 10 - November 29, 1978. 12 pages. Note:The volume number printed on the banner page of this issue (XXXI) duplicates the volume number for the 1968-69 academic year
The State of the Great Central Valley -- The Environment
Part of a series that provides various quality of life indicators for California's Central Valley. Includes data on air quality, water, and land use. Highlights successful efforts that combine goals of economic growth and environmental stewardship
NeighborWorks Green Organizations: 2012 Designee Profiles
The NeighborWorks Green Organization designation recognizes NeighborWorks network members who incorporate healthy and sustainable principles into every facet of their operations and throughout their lines of business. NeighborWorks announced the first group of designees in December 2012 and will be granting new designations annually. NeighborWorks' goal is, by 2016, to have two-thirds of its over 235 network members achieve the NeighborWorks Green Organization Designation, transforming the work of the network in support of creating and sustaining a Network of Excellence.See Profiles of the first 16 NeighborWorks Green Organizations announced in December 2012
Coleta seletiva: fatores norteadores do processo a partir de um estudo de caso de cidade de médio porte em Minas Gerais
Um dos elementos cruciais que definem o sucesso ou fracasso dos Programas de Coleta Seletiva (PCS) nos municÃpios consiste na participação popular, já que esse processo tem dependência direta da segregação na fonte geradora. Por essa razão, estudos que identifiquem condições favoráveis ou desfavoráveis a esta participação apresentam grande relevância no planejamento do PCS. Entretanto, há uma lacuna desse tipo de pesquisa no contexto brasileiro. Nesse cenário, este estudo visou identificar, com base na percepção dos moradores, os fatores demográficos, de motivação e de barreira que influenciam na decisão quanto à segregação na fonte dos resÃduos sólidos na área urbana de uma cidade de médio porte, para, fundamentado neles, propor alternativas para aumento da eficiência dos PCS. Para tanto, foi realizada pesquisa quantitativa, com aplicação de questionário estruturado, sendo a amostra definida por método probabilÃstico de amostragem aleatória. Foram consideradas 850 entrevistas válidas, com nÃvel de confiança de 95%, probabilidade de 3% de erro e variabilidade máxima de 78%. Constatou-se que os fatores mais significativos para a tomada de decisão quanto à segregação dos resÃduos sólidos nas residências consistem na faixa etária, escolaridade, qualidade ambiental, infraestrutura da residência e das áreas públicas, falta de tempo e quantidade de resÃduos sólidos gerada. Observou-se ainda que 82% da população já realiza algum tipo de segregação dos resÃduos sólidos e que 86,82% está disposta a participar do PCS. Assim sendo, recomenda-se a adequação da linguagem e dos meios de comunicação utilizados no programa conforme público-alvo, tendo em vista a acessibilidade e entendimento de cada um. O presente estudo corrobora a aplicabilidade futura de programas de coleta seletiva como um instrumento de sustentabilidade para a gestão de resÃduos sólidos, incentivo a novas pesquisas na área e base para estruturação de programas de educação ambiental com foco na coleta seletiva.One of the crucial elements that determine the success or failure of Selective Collection Programs (SCPs) in the municipalities consists of popular participation, as this process depends directly on source separation. For this reason, studies that identify favorable or unfavorable conditions for this participation are of utmost importance for SCP planning. However, there is a gap in this type of research in the Brazilian context. In this scenario, this study aimed at identifying, based on the residents' perceptions, the demographic, motivation and barrier factors that influence the decision to separate solid waste at source in the urban area of a medium-sized city and, taking these perceptions into account, propose alternatives to increase SCP efficiency. To achieve this goal, a questionnaire survey was conducted, with the sample defined by a random probability method of three-stage cluster sampling. A total of 850 questionnaires were considered valid, with 95% confidence interval, 3% error margin and 78% maximum variability. It was found that the main determinants for the decision to separate waste at source were age group, schooling level, environmental quality, domestic and public area infrastructures, lack of time and amount of solid waste generated. It was also observed that 82% of the population already carry out some type of solid waste segregation and that 86.82% are willing to participate in SCPs. Therefore, it is recommended to adapt the language and communication means used in the programs according to the target audience, considering accessibility and understanding of each one. The current study corroborates the future applicability of selective collection programs as a sustainability tool for solid waste management, encouraging further research in this area and as a basis for structuring environmental education programs focused on selective collection
The ArT\'eMiS wide-field submillimeter camera: preliminary on-sky performances at 350 microns
ArTeMiS is a wide-field submillimeter camera operating at three wavelengths
simultaneously (200, 350 and 450 microns). A preliminary version of the
instrument equipped with the 350 microns focal plane, has been successfully
installed and tested on APEX telescope in Chile during the 2013 and 2014
austral winters. This instrument is developed by CEA (Saclay and Grenoble,
France), IAS (France) and University of Manchester (UK) in collaboration with
ESO. We introduce the mechanical and optical design, as well as the cryogenics
and electronics of the ArTeMiS camera. ArTeMiS detectors are similar to the
ones developed for the Herschel PACS photometer but they are adapted to the
high optical load encountered at APEX site. Ultimately, ArTeMiS will contain 4
sub-arrays at 200 microns and 2x8 sub-arrays at 350 and 450 microns. We show
preliminary lab measurements like the responsivity of the instrument to hot and
cold loads illumination and NEP calculation. Details on the on-sky
commissioning runs made in 2013 and 2014 at APEX are shown. We used planets
(Mars, Saturn, Uranus) to determine the flat-field and to get the flux
calibration. A pointing model was established in the first days of the runs.
The average relative pointing accuracy is 3 arcsec. The beam at 350 microns has
been estimated to be 8.5 arcsec, which is in good agreement with the beam of
the 12 m APEX dish. Several observing modes have been tested, like On-The-Fly
for beam-maps or large maps, spirals or raster of spirals for compact sources.
With this preliminary version of ArTeMiS, we concluded that the mapping speed
is already more than 5 times better than the previous 350 microns instrument at
APEX. The median NEFD at 350 microns is 600 mJy.s1/2, with best values at 300
mJy.s1/2. The complete instrument with 5760 pixels and optimized settings will
be installed during the first half of 2015.Comment: 11 pages, 11 figures. Presented at SPIE Millimeter, Submillimeter,
and Far-Infrared Detectors and Instrumentation for Astronomy VII, June 24,
2014. To be published in Proceedings of SPIE Volume 915
Vista: September 26, 1991
https://digital.sandiego.edu/vista/1037/thumbnail.jp
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