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Indicators and reagents

substances used for the detection, identification, analysis, etc. Of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., colour, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidisers, reducers, fluxes, and colourimetric reagents.

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Re: human brain size

... differences in intelligence...if there were any. After all it might not be lack of intelligence why Neanderthals died out. No matter, the two real indicators is the proportional size/volume of the brain and the amount of neural connections within a brain that could tell you more about the possible ...

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by Semisane
Tue Mar 03, 2015 9:51 am
Forum: Evolution
Topic: human brain size
Replies: 1
Views: 506

Re: Characteristics of Good Indicator Organisms?

... response to changing ecosystem integrity should be consistent in time and space. 4.It should be better than or complementary to other potential indicators.

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by hilljason
Sat Jun 01, 2013 6:53 am
Forum: Microbiology
Topic: Characteristics of Good Indicator Organisms?
Replies: 2
Views: 5431

Does an advanced algo of aggregation and ranking interesting

... me I can send more documents. Thanks Remi remi@cfar-m.com ________________________ CFAR-m features Aggregation is a way to combine several single indicators representing different components (dimensions) of the same concept to form a single aggregate. The result leads to a single score, called ...

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by remimollicone
Fri Aug 10, 2012 6:36 am
Forum: Genetics
Topic: Does an advanced algo of aggregation and ranking interesting
Replies: 0
Views: 3255

how long does a bacteria lives in a water

Supposedly not that good, but probably better than was thought. They are indicators because they do not survive well, i.e. they are valuable because they are telling you that some fecal contamination entered water recently.

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by canalon
Thu Apr 12, 2012 3:05 am
Forum: General Discussion
Topic: how long does a bacteria lives in a water
Replies: 10
Views: 5852

Are there any pH indicators which can kill bacteria?

Some dyes like rose bengal are used functionally in selective media but I'm not aware of selective dyes used as pH indicators. I'd sure validate whatever you use.

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by JorgeLobo
Wed Feb 29, 2012 10:10 am
Forum: Microbiology
Topic: Are there any pH indicators which can kill bacteria?
Replies: 2
Views: 1481
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