The Vatican Emission Star Survey: Review and Comments

Be Stars ◽  
1982 ◽  
pp. 45-48
Author(s):  
Pierre Cardon de Lichtbuer
Keyword(s):  
Emission Star ◽  
Survey Review

scholarly journals The Vatican Emission Star Survey: Review and Comments

1982 ◽  
Vol 98 ◽  
pp. 45-48
Author(s):  
Pierre Cardon de Lichtbuer
Keyword(s):  
Emission Line ◽  
Galactic Plane ◽  
Early Type ◽  
Emission Star ◽  
Ubvri Photometry ◽  
Objective Prism ◽  
Emission Stars ◽  
Survey Review

Eight years ago a program was started at the Vatican Observatory to search for faint emission-line stars close to the galactic plane. Indeed at that time few early type emission stars were known fainter than V = 12. This survey consists in a double program:the search for emission line stars with the Vatican Schmidt using the objective prism and an appropriate combination of plate and filter in order to have a narrow passband around Hα(McCarthy Treanor 1970);and UBVRI photometry at the Mt. Lemmon facilities of the Univ. of Arizona observatories. Five papers have already been published(Coyne et al 1974, 1975, 1978;Wisniewski et al 1976, 1977). Two more will be published later this year. The Vatican Emission Star Survey(VES) resulted in the discovery of about 1000 new emission-line stars; for 700 of those the photometry is finished.

scholarly journals Summary and Overview of the Odour Regulations Worldwide

Atmosphere ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 206
Author(s):  
Anna Bokowa ◽  
Carlos Diaz ◽  
Jacek A. Koziel ◽  
Michael McGinley ◽  
Jennifer Barclay ◽  
...  
Keyword(s):  
Rural Areas ◽  
Site Specific ◽  
Animal Feeding Operations ◽  
Odour Source ◽  
The Usa ◽  
Odour Dispersion ◽  
Odour Emissions ◽  
Control Technologies ◽  
Survey Review ◽  
The Uk

When it comes to air pollution complaints, odours are often the most significant contributor. Sources of odour emissions range from natural to anthropogenic. Mitigation of odour can be challenging, multifaceted, site-specific, and is often confounded by its complexity—defined by existing (or non-existing) environmental laws, public ordinances, and socio-economic considerations. The objective of this paper is to review and summarise odour legislation in selected European countries (France, Germany, Austria, Hungary, the UK, Spain, the Netherlands, Italy, Belgium), North America (the USA and Canada), and South America (Chile and Colombia), as well as Oceania (Australia and New Zealand) and Asia (Japan, China). Many countries have incorporated odour controls into their legislation. However, odour-related assessment criteria tend to be highly variable between countries, individual states, provinces, and even counties and towns. Legislation ranges from (1) no specific mention in environmental legislation that regulates pollutants which are known to have an odour impact to (2) extensive details about odour source testing, odour dispersion modelling, ambient odour monitoring, (3) setback distances, (4) process operations, and (5) odour control technologies and procedures. Agricultural operations are one specific source of odour emissions in rural and suburban areas and a model example of such complexities. Management of agricultural odour emissions is important because of the dense consolidation of animal feeding operations and the advance of housing development into rural areas. Overall, there is a need for continued survey, review, development, and adjustment of odour legislation that considers sustainable development, environmental stewardship, and socio-economic realities, all of which are amenable to a just, site-specific, and sector-specific application.

Survey review: Graded readers (Part 2)

ELT Journal ◽  
1988 ◽  
Vol 42 (2) ◽  
pp. 124-136 ◽  
Author(s):  
D. R. Hill
Keyword(s):  
Graded Readers ◽  
Survey Review

Survey review: grammar practice books

ELT Journal ◽  
1998 ◽  
Vol 52 (1) ◽  
pp. 67-80
Author(s):  
Alan Fortune
Keyword(s):  
Survey Review

Microglia in cerebral ischemia: molecular actions and interactionsThis paper is one of a selection of papers published in this Special Issue, entitled Young Investigator's Forum.

2006 ◽  
Vol 84 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Aaron Y. Lai ◽  
Kathryn G. Todd
Keyword(s):  
Cerebral Ischemia ◽  
Intracellular Signaling ◽  
Molecular Mechanisms ◽  
Extracellular Signals ◽  
Messenger Molecules ◽  
Membrane Bound ◽  
The Subject ◽  
Survey Review ◽  
Selection Of

The precise role of microglia in stroke and cerebral ischemia has been the subject of debate for a number of years. Microglia are capable of synthesizing numerous soluble and membrane-bound biomolecules, some known to be neuroprotective, some neurotoxic, whereas others have less definitive bioactivities. The molecular mechanisms through which microglia activate these molecules have thus become an important area of ischemia research. Here we provide a survey review that summarizes the key actions of microglial factors in cerebral ischemia including complement proteins, chemokines, pro-inflammatory cytokines, neurotrophic factors, hormones, and proteinases, as well several important messenger molecules that play a part in how these factors respond to extracellular signals during ischemic injuries. We also provide some new perspectives on how microglial intracellular signaling may contribute to the seemingly contradictory roles of several microglial effector molecules.

Survey review: Triangle 1-10

ELT Journal ◽  
1994 ◽  
Vol 48 (3) ◽  
pp. 272-279
Author(s):  
A. Maley
Keyword(s):  
Survey Review

A Survey Review of University Biotechnology and Entrepreneurship Commercialization

2008 ◽  
pp. 179-191 ◽  
Author(s):  
David B. Audretsch ◽  
T. Taylor Aldridge ◽  
Marcus Perry
Keyword(s):  
Survey Review
Sign in / Sign up

Export Citation Format

Share Document