V magnitude
V magnitude The magnitude of a star in yellow-green light, the centre of the range of wavelengths to which the eye is sensitive, on the system of
Johnson photometry. The V filter has a central wavelength of 545 nm and a bandwidth of 84 nm. It is the photoelectric equivalent of the older
photovisual and
visual magnitudes. There are also V filters in
Geneva photometry,
Vilnius photometry,
Walraven photometry, and the
six-colour system, but the context should always make it clear when these are intended.
Cite this article
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Lipid Extract of Nostoc commune var. sphaeroides Kützing, a Blue-Green Alga, Inhibits the Activation of Sterol Regulatory Element Binding Proteins in HepG2 Cells1-3
Magazine article from: The Journal of Nutrition; 3/1/2008; ; 700+ words
; ...commune var. sphaeroides Ktzing (N. commune), a blue-green alga, has been used as both a food ingredient and in...discover and develop new bioactive natural products. Blue-green algae (BGA) are among the most primitive life forms on...
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Blue green algae: superfood or pond scum?
Magazine article from: Natural Life; 7/1/1999; ; 700+ words
; ...Canada has warned consumers that blue green algae products may be contaminated...trademarked the phrase "Super Blue Green Algae". There are obviously many...was isolated from cultures of blue green algae. Another positive study, conducted...
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Blue-Green Algae in Lake Champlain.(Reprint)
Newspaper article from: Vermont Nurse Connection; 8/1/2008; 700+ words
; ...800-439-8550 to Report a Blue-Green Algae Bloom * Why be Concerned about...Bay. Under calm conditions, blue-green algae can accumulate in thick layers...pets. Weather influences where blue-green algae will accumulate in a given location...
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Health Canada announces results of blue-green algae testing.
Magazine article from: Natural Life; 11/1/1999; 700+ words
; ...s market survey testing of blue-green algae products show that no microcystins...containing the non-Spirulina blue-green algae until measures to address any...developing serious illness from blue-green algae products containing elevated...
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 "Wisconsin State Journal (Madison, WI)")
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BLUE-GREEN ALGAE PROMPTS ADVISORIES EXPERTS SAY THIS SUMMER'S LEVELS ARE NOT THAT ABNORMAL, HOWEVER.(LOCAL/WISCONSIN)
Newspaper article from: Wisconsin State Journal (Madison, WI); 7/15/2005; ; 700+ words
; ...High concentrations of blue-green algae - the "pond scum" that...remain in effect until the blue-green algae clears...until he discovered the green film on the beach, said...high concentrations of blue-green algae, causing a dog that swam...
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AVOID BLUE-GREEN ALGAE, PEOPLE TOLD BACTERIA THAT CLOSED BEACH CAN MAKE FATAL TOXINS.(FRONT)
Newspaper article from: Wisconsin State Journal (Madison, WI); 6/10/2004; ; 700+ words
; ...lake contains high levels of blue-green algae that can produce fatal toxins...that they would check it." Algae Q & A Q. Why are blue-green algae dangerous? A. The blooms...also get sick. Q. What are blue-green algae? A. Actually...
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BLUE-GREEN ALGAE ALERT ISSUED FOR ROCK CREEK LAKE
News Wire article from: US Fed News Service, Including US State News; 8/2/2006; 650 words
; ...Creek Lake that has a green sheen due to concerns of toxins related to blue-green algae. Recent sampling conducted...lakes for blue-green algae and microcystin and Rock...ppb. "The science of blue-green algae and the potential toxins...
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Global warming being linked to blue-green algae
Newspaper article from: Winnipeg Free Press; 9/29/2006; ; 700+ words
; ...Now, it's being linked to blue-green algae, the microscopic plant that...animals. Cyanobacteria, as blue-green algae is known to scientists, she...She also heads Quebec's blue-green algae intervention program, which...
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The trial of the blue-green algae eaters. (Investigators' Reports) (column)
Magazine article from: FDA Consumer; 7/1/1986; ; 700+ words
; The Trial of the Blue-Green Algae Eaters During a trial earlier this...to conduct a second seizure of blue-green algae products, this time those in possession...the Everett firm, there were no blue-green algae products and no literature...
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BLUE-GREEN ALGAE IN LAKES CAN BE TOXIC TO PETS
News Wire article from: US Fed News Service, Including US State News; 8/6/2008; 520 words
; ...lake water that has evidence of a blue-green algae bloom. Under certain conditions...water containing the toxic form of blue-green algae became fatally ill...harmless. However, the family of blue-green algae called cyanobacteria...
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Blue-Green Algae
Book article from: World of Microbiology and Immunology
Blue-green algae Blue-green algae are actually a type of bacteria that is known as cyanobacteria...energy to manufacture their own food through photosynthesis . The moniker blue-green algae came about because of the color, which was a by-product...
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blue-green algae
Book article from: The Columbia Encyclopedia, Sixth Edition
blue-green algae popular name for those microorganisms that are now more properly called cyanobacteria .
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Algae
Book article from: Biology
Algae Algae are a diverse...algae are the green algae, diatoms...Another group, the blue-green algae...consider the blue-green algae...are unicellular algae with armor made...emit an eerie blue light when disturbed...Many of the ...
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algae
Book article from: The Columbia Encyclopedia, Sixth Edition
algae [plural of Lat. alga =seaweed], a large...animallike manner. The green algae include most...The pond scum , a green slime found in stagnant water, is a green alga, as is the green...of other pigments. Blue-green algae have...
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red algae
Book article from: A Dictionary of Plant Sciences
red algae The common name for algae of the group Rhodophyta . While the majority of marine species are indeed some shade of red, freshwater species may be brown or blue-green. They are known from the Cambrian and were abundant in the succeeding Ordovician .
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