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Anyone here have experience with keeping large numbers of Cockatiels? I was told today by someone who does that in aviary conditions, the birds form a loose social hierarchy based upon how 'natural' their plumage appears. In other words, the birds with wild-type plumage tend to dominate birds of alternate colour mutations when it comes to feeding, mate selection, choice of nest box, etc.. Apparently, the more grey feathers and the closer its resemblance to a wild 'tiel, the more 'respect' the bird gets from its flockmates. Pieds/whitefaces/pearls are somewhere in the middle and the lutinos and albinos are at the very bottom of the pile.
I'd never heard of this before (I've never noticed anything similar with the various shades of budgie I own) but it sounds absolutely fascinating (to me, at least - maybe not to you). Does this sound familiar to anyone? Any link to writings on the subject? Thanks. -- Kurt Shaped Box ( talk) 00:41, 31 March 2008 (UTC)
What percentage of our genes, approximately, do we share with bacteria? And what other species do we have such information for? Is there a table I could see somewhere? Thanks!
James 01:12, 31 March 2008 (UTC)
I am trying to make a DIY laminar flow hood. I have already built the the hood and have used a plenum coupled with a furnace blower and HEPA filter to create the laminar flow stream. I would like to add a UV light for sterilization. I want to just buy a UV bulb and put it in a standard fixture (Like so: Fixture and Light but none of these lights appear long enough! Am I going about this improperly? Is there a special fixture I need to use a UV light?
Thank you!
Ebenbayer ( talk) 02:08, 31 March 2008 (UTC)
You can get away without one if the hood is used a lot. I have two commercial ones in my lab and neither have a UV light fixture. Just clean everything regularly with >70% ethanol. —Preceding unsigned comment added by 82.36.27.228 ( talk) 17:38, 31 March 2008 (UTC)
What's the term for giving someone a larger dose of a medication when starting them on the drug and then cutting it back to a smaller dose once they've ramped up the dosage in their body? I'd like to read the article on it so that I can understand why this needs to be done with some meds but I don't know the term. Thanks, Dismas| (talk) 02:58, 31 March 2008 (UTC)
Size (nm) | Number of atoms | Fraction on surface (%) |
---|---|---|
0.5 | 1 | - |
1 | 8 | 100 |
2 | 64 | 99 |
5 | 1000 | 50 |
10 | 8,000 | 25 |
20 | 64,000 | 12 |
40 | 512,000 | 6 |
80 | 4,000,000 | 3 |
Is the above table (approximately) accurate? I extrapolated (and rounded) the last few entries. It is for spherical particles isn't it? (I may insert this into nanoparticles) Cheers, Shniken1 ( talk) 04:01, 31 March 2008 (UTC)
Number of atoms... | Fraction on surface (%) |
---|---|
8 | 100 |
64 | 88 |
1000 | 49 |
8,000 | 27 |
64,000 | 14 |
512,000 | 7 |
4,096,000 | 4 |
hi, it is said that it is normal to lose 50-100 hairs a day, but how come we don't go bald as i am quite convinced that the rate of hair growth is much slower than the rate of loss. thanks :) —Preceding unsigned comment added by 218.250.158.232 ( talk) 10:39, 31 March 2008 (UTC)
Hello. Do you think you could offer a brief explanation of how buffer solutions work? I (think) I get what they are, as in what they're overall effect is, but how they work has never made sense to me. For example, if you add HCl to water, the water molecule splits into H+ and OH- (or really into H3O+ and OH-, if I recall?) and the OH- accepts the H+ from the HCl, neutralising it. But surely just as many protons are donated by the water as are accepted, so why would this have a neutralising effect? What have I misunderstood? Skittle ( talk) 12:00, 31 March 2008 (UTC)
Do people dying of congenital heart desease
Congestive heart failure experience unbearable pain and if so what is the cause of the pain?
71.100.4.126 (
talk) 13:05, 31 March 2008 (UTC)
What is it for? It is provided at O'Hare International Airport nearby A 5 (around 87° 55' W 51° 59' N). Thanks, -- Scriberius ( talk) 17:46, 31 March 2008 (UTC)
A mother complains that her 3year old child's head is hot while the extremeties are cold. What are the physiological mechanisms responsible for this symptoms-- 82.128.29.40 ( talk) 20:55, 31 March 2008 (UTC)Oyinmart
Are architects in most major "design and build" construction projects appointed by the client or by the main contractor? Thanks in advance. Clover345 ( talk) 21:09, 31 March 2008 (UTC)
Just today on MSNBC there was a story about some Australian neurosurgeon claiming that mobile phones are more likely than cigarettes to give you cancer - similar to claims we've seen countless times in the past. But how could radio waves and microwaves give you cancer when they are less energetic than visible light - that is, not nearly energetic enough to ionize, like UV light, X-rays or gamma rays - and when there are so many studies like the ones here that show no link? And yet how do you explain studies like the ones cited here that do purport to show a link? I'm not a high-frequency cell phone user, but I still need to know if my wireless MacBook is going to kill me. -- Lazar Taxon ( talk) 21:10, 31 March 2008 (UTC)
How would the Bekenstein bound work in a universe without a surface, such as a 3-sphere? Thanks *Max* ( talk) 21:32, 31 March 2008 (UTC).
Science desk | ||
---|---|---|
< March 30 | << Feb | March | Apr >> | April 1 > |
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. |
Anyone here have experience with keeping large numbers of Cockatiels? I was told today by someone who does that in aviary conditions, the birds form a loose social hierarchy based upon how 'natural' their plumage appears. In other words, the birds with wild-type plumage tend to dominate birds of alternate colour mutations when it comes to feeding, mate selection, choice of nest box, etc.. Apparently, the more grey feathers and the closer its resemblance to a wild 'tiel, the more 'respect' the bird gets from its flockmates. Pieds/whitefaces/pearls are somewhere in the middle and the lutinos and albinos are at the very bottom of the pile.
I'd never heard of this before (I've never noticed anything similar with the various shades of budgie I own) but it sounds absolutely fascinating (to me, at least - maybe not to you). Does this sound familiar to anyone? Any link to writings on the subject? Thanks. -- Kurt Shaped Box ( talk) 00:41, 31 March 2008 (UTC)
What percentage of our genes, approximately, do we share with bacteria? And what other species do we have such information for? Is there a table I could see somewhere? Thanks!
James 01:12, 31 March 2008 (UTC)
I am trying to make a DIY laminar flow hood. I have already built the the hood and have used a plenum coupled with a furnace blower and HEPA filter to create the laminar flow stream. I would like to add a UV light for sterilization. I want to just buy a UV bulb and put it in a standard fixture (Like so: Fixture and Light but none of these lights appear long enough! Am I going about this improperly? Is there a special fixture I need to use a UV light?
Thank you!
Ebenbayer ( talk) 02:08, 31 March 2008 (UTC)
You can get away without one if the hood is used a lot. I have two commercial ones in my lab and neither have a UV light fixture. Just clean everything regularly with >70% ethanol. —Preceding unsigned comment added by 82.36.27.228 ( talk) 17:38, 31 March 2008 (UTC)
What's the term for giving someone a larger dose of a medication when starting them on the drug and then cutting it back to a smaller dose once they've ramped up the dosage in their body? I'd like to read the article on it so that I can understand why this needs to be done with some meds but I don't know the term. Thanks, Dismas| (talk) 02:58, 31 March 2008 (UTC)
Size (nm) | Number of atoms | Fraction on surface (%) |
---|---|---|
0.5 | 1 | - |
1 | 8 | 100 |
2 | 64 | 99 |
5 | 1000 | 50 |
10 | 8,000 | 25 |
20 | 64,000 | 12 |
40 | 512,000 | 6 |
80 | 4,000,000 | 3 |
Is the above table (approximately) accurate? I extrapolated (and rounded) the last few entries. It is for spherical particles isn't it? (I may insert this into nanoparticles) Cheers, Shniken1 ( talk) 04:01, 31 March 2008 (UTC)
Number of atoms... | Fraction on surface (%) |
---|---|
8 | 100 |
64 | 88 |
1000 | 49 |
8,000 | 27 |
64,000 | 14 |
512,000 | 7 |
4,096,000 | 4 |
hi, it is said that it is normal to lose 50-100 hairs a day, but how come we don't go bald as i am quite convinced that the rate of hair growth is much slower than the rate of loss. thanks :) —Preceding unsigned comment added by 218.250.158.232 ( talk) 10:39, 31 March 2008 (UTC)
Hello. Do you think you could offer a brief explanation of how buffer solutions work? I (think) I get what they are, as in what they're overall effect is, but how they work has never made sense to me. For example, if you add HCl to water, the water molecule splits into H+ and OH- (or really into H3O+ and OH-, if I recall?) and the OH- accepts the H+ from the HCl, neutralising it. But surely just as many protons are donated by the water as are accepted, so why would this have a neutralising effect? What have I misunderstood? Skittle ( talk) 12:00, 31 March 2008 (UTC)
Do people dying of congenital heart desease
Congestive heart failure experience unbearable pain and if so what is the cause of the pain?
71.100.4.126 (
talk) 13:05, 31 March 2008 (UTC)
What is it for? It is provided at O'Hare International Airport nearby A 5 (around 87° 55' W 51° 59' N). Thanks, -- Scriberius ( talk) 17:46, 31 March 2008 (UTC)
A mother complains that her 3year old child's head is hot while the extremeties are cold. What are the physiological mechanisms responsible for this symptoms-- 82.128.29.40 ( talk) 20:55, 31 March 2008 (UTC)Oyinmart
Are architects in most major "design and build" construction projects appointed by the client or by the main contractor? Thanks in advance. Clover345 ( talk) 21:09, 31 March 2008 (UTC)
Just today on MSNBC there was a story about some Australian neurosurgeon claiming that mobile phones are more likely than cigarettes to give you cancer - similar to claims we've seen countless times in the past. But how could radio waves and microwaves give you cancer when they are less energetic than visible light - that is, not nearly energetic enough to ionize, like UV light, X-rays or gamma rays - and when there are so many studies like the ones here that show no link? And yet how do you explain studies like the ones cited here that do purport to show a link? I'm not a high-frequency cell phone user, but I still need to know if my wireless MacBook is going to kill me. -- Lazar Taxon ( talk) 21:10, 31 March 2008 (UTC)
How would the Bekenstein bound work in a universe without a surface, such as a 3-sphere? Thanks *Max* ( talk) 21:32, 31 March 2008 (UTC).