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I want to create a gradual weight loss by reducing my calorie intake slightly below the amount of calories that would make me neither fatter or thinner. How can I estimate this amount? It must be related to body size etc. 92.27.159.22 ( talk) 01:46, 30 June 2009 (UTC)
Thanks. I had in the past tried a harsh diet of 2000c during weekdays and 2500c at the weekend that dropped my weight in a few weeks. But, like most dieters, as soon as you stop the diet, your weight soon returns to what it was previously. Currently I am on a milder diet of 2500c per day, which is undoubtedly less than what I ate before when unrestrained, since normal processed foods have too many calories in them to be eaten except as rare treats. I have been eating lots of vegetables and fruit and so far have not felt particularly hungary except mildly late in the evenings. 89.240.105.155 ( talk) 19:47, 30 June 2009 (UTC)
You might like the online book The Hacker's Diet. 208.70.31.206 ( talk) 07:37, 2 July 2009 (UTC)
How might I fabricate a material that could simulate human finger prints, i.e. very small grooves on the surface of a smooth rubbery? skin-like surface. Obviously you can't really replicate real fingers 100%, but what might be a reasonable material to simulate the skin? And how might I get the fingerprint "grooves"? I'm thinking some sort of rubber that I can harden into a cast after imprinting my own finger prints, and then use that mold to create the outer skin layer which I will cover the replica fingers with. Any idea what sort of rubber I could use to do this? Or does anyone know of a better way? Thanks! 124.154.253.146 ( talk) 02:53, 30 June 2009 (UTC)
Remember I had asked a question a few days back, here. Well what do you know, It really works !! It responds to light just fine on the breadboard, and it is as sensitive as it can get... I think there must be something in IR emitters after all which would enable them to detect light, and do it quite well... But thanks for helping out, guys... Rkr1991 ( talk) 08:12, 30 June 2009 (UTC)
“ | There is no way a light emitter can be used as a detector. Your book is wrong. If it's not a misprint then the author is an idiot...which is actually possible - many of these books are written by enthusiastic amateurs who are sloppy with scientific terms | ” |
Where is Steve hiding, by the way ? He did contribute at 17:30 June 30th at the Miscellaneous desk.. Rkr1991 ( talk) 04:57, 1 July 2009 (UTC)
the equilibrium constant of a reaction depended only on temperature . At what condition equilibrium constant not change with temperature? Rikichowdhury ( talk) 09:01, 30 June 2009 (UTC)
Can low blood pressure cause cold hands or cold extremeties? How does it cause that? -- Mudupie ( talk) 13:45, 30 June 2009 (UTC)
To Mudupie: yes. See " Shock (circulatory)". Hypovolemic shock, cardiogenic shock and obstructive shock will all lead to cool peripheries. Distributive shock leads to warm peripheries. Axl ¤ [Talk] 17:00, 1 July 2009 (UTC)
I have been reading up a bit on the new Sell gasoline that is nitrogen enhanced. I find a lot of controversy and contradiction re: the legitimacy of this enhanement. So, can anyone shed some light on whether or not nitrogen enhanced gasoline really is beneficial and if so in what way? —Preceding unsigned comment added by 209.161.211.158 ( talk) 14:11, 30 June 2009 (UTC)
Nitrogen compounds as cleaning additives?! Come on people, get real! I've done some research on shale oil (which has LOTS of nitrogen compounds in it), and I know for a fact that those compounds are definitely harmful to fuel quality: they have a strong tendency to spontaneously polymerize and form huge amounts of disgusting sticky black sludge that clogs engine components in no time flat! In fact, in the case of shale oil, nitrogen compounds must be completely removed from the fuel, and to the best of my knowledge, they must also be removed from conventional petroleum that happens for some reason to have too much nitrogen in it. Sounds to me like Shell is trying to charge extra for low-quality gasoline by trying to market it as something good for your car, when really it's nothing of the kind. FWiW 76.21.37.87 ( talk) 06:50, 1 July 2009 (UTC)
APL -- I am perfectly aware of that; however, I know for a fact that most amines and nitrogen-containing heterocyclic compounds such as pyridines and pyrroles are harmful to fuel quality. Furthermore, to the best of my knowledge, it is precisely the compounds listed above that are most likely to be found in Shell "nitrogen-enhanced" gasoline, because most other nitrogen compounds are rarely, if ever, found in petroleum and petroleum products. I also reiterate that from what I know about petroleum refining (which is quite a lot), high nitrogen levels in petroleum are in general undesirable and are (if excessive) lowered by hydroprocessing. Therefore, I stand by my position that "nitrogen-enhanced" gasoline is of a lower quality than conventional gasoline. FWIW 76.21.37.87 ( talk) 04:19, 2 July 2009 (UTC)
My local bagel shop serves a chai latte'. I'm not a tea drinker but this stuff is outstanding! A couple other people and I have noticed that we have to defecate soon after drinking it. So, we're wondering, does whatever version of chai that this most likely is have any laxative qualities? Note: I am not seeking medical advice. We have just noticed this pattern in three non-genetically related people. Again, this is not a request for medical advice. Dismas| (talk) 14:46, 30 June 2009 (UTC)
Yeah? Try some native teas boys. There's one for every purpose. Take the time to learn them from an elder and you would be surprised by the results! Me??? I'm fond of spotted joe pyeweed tea or comfrey tea. Tastes horrible, hard on the taste buds and the liver but good for the brain! Experiment but BE CAREFUL! B.T.W. J-weed ...stay away from it, Salvia likewise. 67.193.179.241 ( talk) 21:08, 30 June 2009 (UTC)Rana sylvatica
I was hacking down plants with a machete in my brothers backyard today and I came across a very tall, non-woody-stemmed plant (about the size of a small tree). It has a reddish-purple stem and huge, long, pointed ovoid leaves. The stem is very thick (two or three inches at the base)and when I hack it open, the pith inside is divided into little segments all the way up by little white membranes. The tiny, white flowers near the top have five petals and seem to be in the process of turning into little green berries. I don't have the slightest clue what this plant might be and I'd really like to find out. Any help would be appreciated. 76.250.254.192 ( talk) 17:11, 30 June 2009 (UTC)
I concurr, but when young, the plant is not toxic. "pokeweed salad" anyone? 67.193.179.241 ( talk) 21:12, 30 June 2009 (UTC)Rana sylvatica
OP here, posting from a different IP address. I just wanted to confirm that what I found was indeed Pokeweed. Thanks a lot for the help! 63.245.144.68 ( talk) 22:18, 1 July 2009 (UTC)
You have a solid heavy wall which is two metres high. 50 metres away from the wall is a point source of noise of n decibels. Although practically none of this noise gets through the wall itself, the noise will diffract over the top of the wall. Is there any way to estimate what the decibels of noise will be at various positions (x,y) on the quiet side of the wall? This is not a homework question, but I'm just trying to estimate to what extent building a walled enclosure in my garden would reduce traffic noise. Thanks. 89.240.105.155 ( talk) 20:05, 30 June 2009 (UTC)
Is blue giant a main sequence star, or blue giant is not entirely dissimilar from blue supergiant. What is a yellow supergiant. Does yellow supergiant evolve from blue or white supergiant. Then what blue type is main seqeunce, is it blue dwarf or blue ginat?-- 69.229.111.118 ( talk) 21:21, 30 June 2009 (UTC)
After continous moving of plate tectonics, is Antartica suppose to move away from South Pole one day. Is Australia suppose to collide with Asia one day? I thought Africa just continues to drift north. Alot of diagram shos in 200 million years Kenya will lie to like 35 degrees North liatitude, and North Africa suppose to be more or less to Artic Circle.-- 69.229.111.118 ( talk) 21:26, 30 June 2009 (UTC)
Science desk | ||
---|---|---|
< June 29 | << May | June | Jul >> | July 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. |
I want to create a gradual weight loss by reducing my calorie intake slightly below the amount of calories that would make me neither fatter or thinner. How can I estimate this amount? It must be related to body size etc. 92.27.159.22 ( talk) 01:46, 30 June 2009 (UTC)
Thanks. I had in the past tried a harsh diet of 2000c during weekdays and 2500c at the weekend that dropped my weight in a few weeks. But, like most dieters, as soon as you stop the diet, your weight soon returns to what it was previously. Currently I am on a milder diet of 2500c per day, which is undoubtedly less than what I ate before when unrestrained, since normal processed foods have too many calories in them to be eaten except as rare treats. I have been eating lots of vegetables and fruit and so far have not felt particularly hungary except mildly late in the evenings. 89.240.105.155 ( talk) 19:47, 30 June 2009 (UTC)
You might like the online book The Hacker's Diet. 208.70.31.206 ( talk) 07:37, 2 July 2009 (UTC)
How might I fabricate a material that could simulate human finger prints, i.e. very small grooves on the surface of a smooth rubbery? skin-like surface. Obviously you can't really replicate real fingers 100%, but what might be a reasonable material to simulate the skin? And how might I get the fingerprint "grooves"? I'm thinking some sort of rubber that I can harden into a cast after imprinting my own finger prints, and then use that mold to create the outer skin layer which I will cover the replica fingers with. Any idea what sort of rubber I could use to do this? Or does anyone know of a better way? Thanks! 124.154.253.146 ( talk) 02:53, 30 June 2009 (UTC)
Remember I had asked a question a few days back, here. Well what do you know, It really works !! It responds to light just fine on the breadboard, and it is as sensitive as it can get... I think there must be something in IR emitters after all which would enable them to detect light, and do it quite well... But thanks for helping out, guys... Rkr1991 ( talk) 08:12, 30 June 2009 (UTC)
“ | There is no way a light emitter can be used as a detector. Your book is wrong. If it's not a misprint then the author is an idiot...which is actually possible - many of these books are written by enthusiastic amateurs who are sloppy with scientific terms | ” |
Where is Steve hiding, by the way ? He did contribute at 17:30 June 30th at the Miscellaneous desk.. Rkr1991 ( talk) 04:57, 1 July 2009 (UTC)
the equilibrium constant of a reaction depended only on temperature . At what condition equilibrium constant not change with temperature? Rikichowdhury ( talk) 09:01, 30 June 2009 (UTC)
Can low blood pressure cause cold hands or cold extremeties? How does it cause that? -- Mudupie ( talk) 13:45, 30 June 2009 (UTC)
To Mudupie: yes. See " Shock (circulatory)". Hypovolemic shock, cardiogenic shock and obstructive shock will all lead to cool peripheries. Distributive shock leads to warm peripheries. Axl ¤ [Talk] 17:00, 1 July 2009 (UTC)
I have been reading up a bit on the new Sell gasoline that is nitrogen enhanced. I find a lot of controversy and contradiction re: the legitimacy of this enhanement. So, can anyone shed some light on whether or not nitrogen enhanced gasoline really is beneficial and if so in what way? —Preceding unsigned comment added by 209.161.211.158 ( talk) 14:11, 30 June 2009 (UTC)
Nitrogen compounds as cleaning additives?! Come on people, get real! I've done some research on shale oil (which has LOTS of nitrogen compounds in it), and I know for a fact that those compounds are definitely harmful to fuel quality: they have a strong tendency to spontaneously polymerize and form huge amounts of disgusting sticky black sludge that clogs engine components in no time flat! In fact, in the case of shale oil, nitrogen compounds must be completely removed from the fuel, and to the best of my knowledge, they must also be removed from conventional petroleum that happens for some reason to have too much nitrogen in it. Sounds to me like Shell is trying to charge extra for low-quality gasoline by trying to market it as something good for your car, when really it's nothing of the kind. FWiW 76.21.37.87 ( talk) 06:50, 1 July 2009 (UTC)
APL -- I am perfectly aware of that; however, I know for a fact that most amines and nitrogen-containing heterocyclic compounds such as pyridines and pyrroles are harmful to fuel quality. Furthermore, to the best of my knowledge, it is precisely the compounds listed above that are most likely to be found in Shell "nitrogen-enhanced" gasoline, because most other nitrogen compounds are rarely, if ever, found in petroleum and petroleum products. I also reiterate that from what I know about petroleum refining (which is quite a lot), high nitrogen levels in petroleum are in general undesirable and are (if excessive) lowered by hydroprocessing. Therefore, I stand by my position that "nitrogen-enhanced" gasoline is of a lower quality than conventional gasoline. FWIW 76.21.37.87 ( talk) 04:19, 2 July 2009 (UTC)
My local bagel shop serves a chai latte'. I'm not a tea drinker but this stuff is outstanding! A couple other people and I have noticed that we have to defecate soon after drinking it. So, we're wondering, does whatever version of chai that this most likely is have any laxative qualities? Note: I am not seeking medical advice. We have just noticed this pattern in three non-genetically related people. Again, this is not a request for medical advice. Dismas| (talk) 14:46, 30 June 2009 (UTC)
Yeah? Try some native teas boys. There's one for every purpose. Take the time to learn them from an elder and you would be surprised by the results! Me??? I'm fond of spotted joe pyeweed tea or comfrey tea. Tastes horrible, hard on the taste buds and the liver but good for the brain! Experiment but BE CAREFUL! B.T.W. J-weed ...stay away from it, Salvia likewise. 67.193.179.241 ( talk) 21:08, 30 June 2009 (UTC)Rana sylvatica
I was hacking down plants with a machete in my brothers backyard today and I came across a very tall, non-woody-stemmed plant (about the size of a small tree). It has a reddish-purple stem and huge, long, pointed ovoid leaves. The stem is very thick (two or three inches at the base)and when I hack it open, the pith inside is divided into little segments all the way up by little white membranes. The tiny, white flowers near the top have five petals and seem to be in the process of turning into little green berries. I don't have the slightest clue what this plant might be and I'd really like to find out. Any help would be appreciated. 76.250.254.192 ( talk) 17:11, 30 June 2009 (UTC)
I concurr, but when young, the plant is not toxic. "pokeweed salad" anyone? 67.193.179.241 ( talk) 21:12, 30 June 2009 (UTC)Rana sylvatica
OP here, posting from a different IP address. I just wanted to confirm that what I found was indeed Pokeweed. Thanks a lot for the help! 63.245.144.68 ( talk) 22:18, 1 July 2009 (UTC)
You have a solid heavy wall which is two metres high. 50 metres away from the wall is a point source of noise of n decibels. Although practically none of this noise gets through the wall itself, the noise will diffract over the top of the wall. Is there any way to estimate what the decibels of noise will be at various positions (x,y) on the quiet side of the wall? This is not a homework question, but I'm just trying to estimate to what extent building a walled enclosure in my garden would reduce traffic noise. Thanks. 89.240.105.155 ( talk) 20:05, 30 June 2009 (UTC)
Is blue giant a main sequence star, or blue giant is not entirely dissimilar from blue supergiant. What is a yellow supergiant. Does yellow supergiant evolve from blue or white supergiant. Then what blue type is main seqeunce, is it blue dwarf or blue ginat?-- 69.229.111.118 ( talk) 21:21, 30 June 2009 (UTC)
After continous moving of plate tectonics, is Antartica suppose to move away from South Pole one day. Is Australia suppose to collide with Asia one day? I thought Africa just continues to drift north. Alot of diagram shos in 200 million years Kenya will lie to like 35 degrees North liatitude, and North Africa suppose to be more or less to Artic Circle.-- 69.229.111.118 ( talk) 21:26, 30 June 2009 (UTC)