Dictionary » D » Dropper

Dropper

Dropper

1. One who, or that which, drops. Specif., a fly that drops from the leaden above the bob or end fly.

2. A dropping tube.

3. (Science: chemical) a branch vein which drops off from, or leaves, the main lode.

4. (Science: zoology) a dog which suddenly drops upon the ground when it sights game, formerly a common, and still an occasional, habit of the setter.


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Re:

... where you don't use a selectively permeable membrane: You have a glass of water and you place a coloured dye to one corner of the glass via eye dropper, then after some dye has been transported into the water, you can see the diffusion of the dye moving from HIGH CONCENTRATION to LOW CONCENTRATION ...

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by leftventricle
Mon Nov 15, 2010 5:20 am
 
Forum: Cell Biology
Topic: Verify my simple t/f answers?
Replies: 9
Views: 9740

Verify my simple t/f answers?

... where you don't use a selectively permeable membrane: You have a glass of water and you place a coloured dye to one corner of the glass via eye dropper, then after some dye has been transported into the water, you can see the diffusion of the dye moving from HIGH CONCENTRATION to LOW CONCENTRATION ...

See entire post
by Tranc3r
Sun Nov 14, 2010 11:26 pm
 
Forum: Cell Biology
Topic: Verify my simple t/f answers?
Replies: 9
Views: 9740

Re: Issue with Simple Stain Procedure

Sounds like insufficient drying and/or over-rinsing. Over-rinsing is a very common problem with new students. Just a few drops from an eye-dropper is usually sufficient for rinse - much more and you end up washing away much of the bacteria. Plus, if the smear was insufficiently dried or you ...

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by billw
Fri Feb 05, 2010 2:27 pm
 
Forum: Microbiology
Topic: Issue with Simple Stain Procedure
Replies: 1
Views: 2145

Problems related to Microsome Preparation

... to take supernatant use another centrifugation at 5000g for 10 min in cold room. Then I loaded 2mL of the lysate to 3mL 35%sucrose cushion with dropper. I found that some drops distrubed the sucrose layer surface during the loading process. However, I found that there was still two liquid layers ...

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by benzenefancy
Tue Jun 30, 2009 7:21 pm
 
Forum: Molecular Biology
Topic: Problems related to Microsome Preparation
Replies: 0
Views: 2666

Separation of microsome by centrifugation

... to take supernatant use another centrifugation at 5000g for 10 min in cold room. Then I loaded 2mL of the lysate to 3mL 35%sucrose cushion with dropper. I found that some drops distrubed the sucrose layer surface during the loading process. However, I found that there was still two liquid layers ...

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by benzenefancy
Tue Jun 30, 2009 7:06 pm
 
Forum: General Discussion
Topic: Separation of microsome by centrifugation
Replies: 0
Views: 1932


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