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Sir/ Madam I wish to know what are the floating conditions to make any thing float over water surface(Normal potable water not salty).
Wish for an early reply
Thanx a lot — Preceding unsigned comment added by 182.156.153.151 ( talk) 04:20, 22 September 2011 (UTC)
A solid sphere can float if the radius is less than
where is the surface tension of water and is the density of the sphere. Count Iblis ( talk) 16:02, 22 September 2011 (UTC)
Can someone help me brainstorm of new agonists I could use for fruit fly experiments? We've been working with cocaine for ... years and months, but I also want to try something else. For one, the success rate of aerosolising cocaine with a consistency amenable to experiment is rather unpredictable.
Feeding it into a test chamber by say, distillation often means the cocaine crashes out and crystallises on random surfaces, unable to be taken up by flies. For the love of the flying spaghetti monster, are there any agents better than cocaine that might be easier to administer through the air? (We cannot administer through their food, for various complex reasons.) elle vécut heureuse à jamais ( be free) 04:53, 22 September 2011 (UTC)
After reading the scar tissue article, http://en.wikipedia.org/wiki/Scar, I came across this tidbit: "Sherratt et al, explain that scar tissue is the same protein (collagen) as the tissue that it replaces,[1] but the fiber composition of the protein is different; he explains that instead of a random basketweave formation of the collagen fibers found in normal tissue,[1] in fibrosis the collagen cross-links and forms a pronounced alignment in a single direction.[1] This collagen scar tissue alignment is usually of inferior functional quality to the normal collagen randomised alignment. For example, scars in the skin are less resistant to ultraviolet radiation, and sweat glands and hair follicles do not grow back within scar tissue. A myocardial infarction, commonly known as a heart attack, causes scar formation in the heart muscle, which leads to loss of muscular power and possibly heart failure. However, there are some tissues (e.g. bone) that can heal without any structural or functional deterioration."
I was wondering what exactly cause the collagen fibers to cross link and possible why the scar tissue replicates itself instead of normal skin since its constantly being replaced. Is there a specific gene for this? — Preceding
unsigned comment added by
139.62.167.82 (
talk) 20:42, 22 September 2011 (UTC)
Science desk | ||
---|---|---|
< September 21 | << Aug | September | Oct >> | September 23 > |
Welcome to the Wikipedia Science Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
Sir/ Madam I wish to know what are the floating conditions to make any thing float over water surface(Normal potable water not salty).
Wish for an early reply
Thanx a lot — Preceding unsigned comment added by 182.156.153.151 ( talk) 04:20, 22 September 2011 (UTC)
A solid sphere can float if the radius is less than
where is the surface tension of water and is the density of the sphere. Count Iblis ( talk) 16:02, 22 September 2011 (UTC)
Can someone help me brainstorm of new agonists I could use for fruit fly experiments? We've been working with cocaine for ... years and months, but I also want to try something else. For one, the success rate of aerosolising cocaine with a consistency amenable to experiment is rather unpredictable.
Feeding it into a test chamber by say, distillation often means the cocaine crashes out and crystallises on random surfaces, unable to be taken up by flies. For the love of the flying spaghetti monster, are there any agents better than cocaine that might be easier to administer through the air? (We cannot administer through their food, for various complex reasons.) elle vécut heureuse à jamais ( be free) 04:53, 22 September 2011 (UTC)
After reading the scar tissue article, http://en.wikipedia.org/wiki/Scar, I came across this tidbit: "Sherratt et al, explain that scar tissue is the same protein (collagen) as the tissue that it replaces,[1] but the fiber composition of the protein is different; he explains that instead of a random basketweave formation of the collagen fibers found in normal tissue,[1] in fibrosis the collagen cross-links and forms a pronounced alignment in a single direction.[1] This collagen scar tissue alignment is usually of inferior functional quality to the normal collagen randomised alignment. For example, scars in the skin are less resistant to ultraviolet radiation, and sweat glands and hair follicles do not grow back within scar tissue. A myocardial infarction, commonly known as a heart attack, causes scar formation in the heart muscle, which leads to loss of muscular power and possibly heart failure. However, there are some tissues (e.g. bone) that can heal without any structural or functional deterioration."
I was wondering what exactly cause the collagen fibers to cross link and possible why the scar tissue replicates itself instead of normal skin since its constantly being replaced. Is there a specific gene for this? — Preceding
unsigned comment added by
139.62.167.82 (
talk) 20:42, 22 September 2011 (UTC)