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If its a myth that cold weather or being cold makes people catch a cold, then why do so many people get colds in such conditions? Clover345 ( talk) 00:13, 17 May 2013 (UTC)
Up above someone said, "cold weather encourages people to spend more time indoors in close quarters with other people, which tends to exacerbate transmission of such illnesses". So in places like Phoenix, Arizona, for example, where very hot Summer weather drives people indoors in close quarters with other people, are there more colds in Summer than in Winter? 148.177.1.217 ( talk) 15:24, 17 May 2013 (UTC)
Hi, could a neutron star accrete mass and blow apart roughly like a white dwarf is believed to in a type 1a? I suppose the nuclear combustion and light curve would be different, if it even could happen. Thanks 199.33.32.40 ( talk) 00:39, 17 May 2013 (UTC)
Is toluene used in consumer products anymore? 24.23.196.85 ( talk) 06:26, 17 May 2013 (UTC)
I found at home, middle of Germany, a small beetle and this was not the first one. I suspect that they live either from the wooden construction material of the house or the straw used for isolation. I made a few image and now I hope that somebody can help me name the little creature. I like the hairy bug especially that it looks like it has no eyes and a nice claw on his legs.
-- Stone ( talk) 12:14, 17 May 2013 (UTC)
In the SEM images it is hard to guess where the beetle has its eyes.-- Stone ( talk) 17:25, 17 May 2013 (UTC)
I think it is a Niptus hololeucus. Anybody disagree?-- Stone ( talk) 05:30, 18 May 2013 (UTC)
Why atomic silver reduces ionic gold? Thanks! — Preceding unsigned comment added by 134.130.94.148 ( talk) 13:56, 17 May 2013 (UTC)
This discussion has been closed. Please do not modify it. |
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The following discussion has been closed. Please do not modify it. |
Hi guys, I'm an MCB graduate student. I've never really edited Wikipedia. At first I thought I'd edit the Sleep page just to throw this simple sleep hypothesis/theory out there and let you guys run with it, but that didn't seem like the right place to post it; then I saw the "talk," page, but that warned that it wasn't the place either. In any case, I've got more than enough work to do so feel free to take a critical look at this, get it to anyone who might be interested, and take it from there: Sleep Theory I think the brain needs 1) "mental" energy to initiate sleep, 2) enough experience during the day to have something to do (process) during sleep, and obviously 3) environmental conditions conducive to initiate/maintain sleep: (OMG, this looks terrible posting from MS Word to here...I apologize in advance. Here's a slightly better version on the blog I'm making (which looks awful as well!) that's slightly better: http://johnfial.wordpress.com/sleep-theory/ 1. Initiation. PFC (Pre-Frontal Cortex) is likely initiating that “sleepy” feeling. It does this based on biochemical energy reserves (brain, liver? Unsure...) based on last ~48hrs of physical activity levels. PFC probably un-couples (or “unlocks”) the brain from major skeletal muscular nerves (keeping the physical body relatively motionless), and allows the rest of the brain to: a. REM: Unrestricted neural activity, maintenance of neural networks, strengthening of networks used throughout the day – especially those most-depleted of energy (high neurotransmitter/reuptake use, for instance, in neural networks associated with learning a new “riff” on the guitar) b. NON-REM: Light neural activity? Probably heavy metabolic maintenance / physiological preparation pathways. (A singer's/public speaker's brain, for instance, might “run simulations” using vocal physiological pathways during NON-REM phases. Just a hunch – I have no evidence to support this idea.) i. Reproductive pathways ii. Immune system pathways/support 2. Was there enough neural use during the day for the brain to “process” during sleep? a. Learning b. Skill acquisition/improvement c. Variation of mental/physical activities 3. Environmental factors (Both Initiation & Maintenance) a. Light & circadian rhythm b. Sound i. & vibration? Research: are there any sleep issues correlated to areas with excess ULF noise? c. Smell (try going to sleep with heavy smoke in the room!) d. Temperature e. Nutrients required to maintain metabolic (& physiological) pathways? i. Nutrients: All else being equal (physical activity + mental experiences), macro-nutrient deficiencies likely cause the biggest sleep challenges 1. Amino-acid or fatty-acid deficiency? Sleep is DONE. Wake up! Go find some food! 2. Micro-nutrient deficiency? Possibly responsible for smaller-scale issues. a. REMEMBER that micro-nutrient “intake” (i.e. through the mouth, via food or supplements) does NOT NECESSARILY mean those nutrients get into the bloodflow or transported into the cells that need them! ii. Drugs: Any “positive” drugs during the day may have “negative” side-effects at night. 4. Maintenance: Next sleep cycle? a. Were physical activity levels in last ~48hrs enough to continue into next sleep cycle? b. Enough neural/mental activity during day to justify staying asleep another cycle? c. Do environmental conditions (external world & internal nutrients) persist? — Preceding unsigned comment added by A957835895 ( talk • contribs) 21:20, 17 May 2013 (UTC) |
Science desk | ||
---|---|---|
< May 16 | << Apr | May | Jun >> | May 18 > |
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. |
If its a myth that cold weather or being cold makes people catch a cold, then why do so many people get colds in such conditions? Clover345 ( talk) 00:13, 17 May 2013 (UTC)
Up above someone said, "cold weather encourages people to spend more time indoors in close quarters with other people, which tends to exacerbate transmission of such illnesses". So in places like Phoenix, Arizona, for example, where very hot Summer weather drives people indoors in close quarters with other people, are there more colds in Summer than in Winter? 148.177.1.217 ( talk) 15:24, 17 May 2013 (UTC)
Hi, could a neutron star accrete mass and blow apart roughly like a white dwarf is believed to in a type 1a? I suppose the nuclear combustion and light curve would be different, if it even could happen. Thanks 199.33.32.40 ( talk) 00:39, 17 May 2013 (UTC)
Is toluene used in consumer products anymore? 24.23.196.85 ( talk) 06:26, 17 May 2013 (UTC)
I found at home, middle of Germany, a small beetle and this was not the first one. I suspect that they live either from the wooden construction material of the house or the straw used for isolation. I made a few image and now I hope that somebody can help me name the little creature. I like the hairy bug especially that it looks like it has no eyes and a nice claw on his legs.
-- Stone ( talk) 12:14, 17 May 2013 (UTC)
In the SEM images it is hard to guess where the beetle has its eyes.-- Stone ( talk) 17:25, 17 May 2013 (UTC)
I think it is a Niptus hololeucus. Anybody disagree?-- Stone ( talk) 05:30, 18 May 2013 (UTC)
Why atomic silver reduces ionic gold? Thanks! — Preceding unsigned comment added by 134.130.94.148 ( talk) 13:56, 17 May 2013 (UTC)
This discussion has been closed. Please do not modify it. |
---|
The following discussion has been closed. Please do not modify it. |
Hi guys, I'm an MCB graduate student. I've never really edited Wikipedia. At first I thought I'd edit the Sleep page just to throw this simple sleep hypothesis/theory out there and let you guys run with it, but that didn't seem like the right place to post it; then I saw the "talk," page, but that warned that it wasn't the place either. In any case, I've got more than enough work to do so feel free to take a critical look at this, get it to anyone who might be interested, and take it from there: Sleep Theory I think the brain needs 1) "mental" energy to initiate sleep, 2) enough experience during the day to have something to do (process) during sleep, and obviously 3) environmental conditions conducive to initiate/maintain sleep: (OMG, this looks terrible posting from MS Word to here...I apologize in advance. Here's a slightly better version on the blog I'm making (which looks awful as well!) that's slightly better: http://johnfial.wordpress.com/sleep-theory/ 1. Initiation. PFC (Pre-Frontal Cortex) is likely initiating that “sleepy” feeling. It does this based on biochemical energy reserves (brain, liver? Unsure...) based on last ~48hrs of physical activity levels. PFC probably un-couples (or “unlocks”) the brain from major skeletal muscular nerves (keeping the physical body relatively motionless), and allows the rest of the brain to: a. REM: Unrestricted neural activity, maintenance of neural networks, strengthening of networks used throughout the day – especially those most-depleted of energy (high neurotransmitter/reuptake use, for instance, in neural networks associated with learning a new “riff” on the guitar) b. NON-REM: Light neural activity? Probably heavy metabolic maintenance / physiological preparation pathways. (A singer's/public speaker's brain, for instance, might “run simulations” using vocal physiological pathways during NON-REM phases. Just a hunch – I have no evidence to support this idea.) i. Reproductive pathways ii. Immune system pathways/support 2. Was there enough neural use during the day for the brain to “process” during sleep? a. Learning b. Skill acquisition/improvement c. Variation of mental/physical activities 3. Environmental factors (Both Initiation & Maintenance) a. Light & circadian rhythm b. Sound i. & vibration? Research: are there any sleep issues correlated to areas with excess ULF noise? c. Smell (try going to sleep with heavy smoke in the room!) d. Temperature e. Nutrients required to maintain metabolic (& physiological) pathways? i. Nutrients: All else being equal (physical activity + mental experiences), macro-nutrient deficiencies likely cause the biggest sleep challenges 1. Amino-acid or fatty-acid deficiency? Sleep is DONE. Wake up! Go find some food! 2. Micro-nutrient deficiency? Possibly responsible for smaller-scale issues. a. REMEMBER that micro-nutrient “intake” (i.e. through the mouth, via food or supplements) does NOT NECESSARILY mean those nutrients get into the bloodflow or transported into the cells that need them! ii. Drugs: Any “positive” drugs during the day may have “negative” side-effects at night. 4. Maintenance: Next sleep cycle? a. Were physical activity levels in last ~48hrs enough to continue into next sleep cycle? b. Enough neural/mental activity during day to justify staying asleep another cycle? c. Do environmental conditions (external world & internal nutrients) persist? — Preceding unsigned comment added by A957835895 ( talk • contribs) 21:20, 17 May 2013 (UTC) |