Maria Sharapova just got in trouble for using meldonium; how does this medication improve sports performance? |
- Maria Sharapova just got in trouble for using meldonium; how does this medication improve sports performance?
- The half-life of Hydrogen-7 is 21 yoctoseconds (21x10^-24s). How is that time measured?
- How legit is this article?
- Is gravitational time dilation near a black hole due to some intrinsic property of being deep in its gravity well or due to the relativistic speeds needed to maintain orbit around it, or both?
- Rocket science: Why cant you use liquid oxygen as a fuel in rockets, and why cant we use fluorine for a stronger oxidizer?
- What are the practical concerns which would prevent some hyperloop design from doing LA to NY in 16 minutes?
- Is it possible to slow down radioactive decay through cooling?
- Is it possible for a spinning black hole to stop spinning and become a non rotating black hole?
- During the process of bacterial conjugation, how is it decided which genetic material is transferred between the two bacterial cells? How can the cells determine what genes are beneficial for themselves?
- What stops an electron from falling into the protons within an atom?
- If electricity is generated by moving electrons, does the source of electric energy lose electrons over time? Does that have an impact at the source?
- If I shuffled a deck of cards, and dealt four cards, would the odds of getting four of a kind be lower than if I shuffled the deck of cards after each time I dealt one card four times?
- Are certain types of ailments or illnesses more prone to being cured by placebos than others?
- When a pregnant woman goes into labor, what is the proximate physiological change that caused the labor to begin? What mechanism if any functions as a sort of genetic clock for how long the baby will gestate and when this process will end?
- Is Visuo-spatial intelligence part of Fluid intelligence?
- Why is Pluto not considered a planet?
- How do OCPs treat endometriosis?
- If everything in the universe is moving, including us and our sun and galaxy, is it possible to calculate the absolute speed of any object?
- How does gravity/relativity impact my ability to see something?
- What things in nature are always almost the same size?
| Posted: 07 Mar 2016 09:23 PM PST Seems like it blocks carnitine synthesis. Carnitine is used to shuttle fatty acids into mitochondria where they are used as an energy source. Why would inhibiting this process be in any way performance enhancing? [link] [comments]  |
| The half-life of Hydrogen-7 is 21 yoctoseconds (21x10^-24s). How is that time measured? Posted: 07 Mar 2016 09:37 PM PST That's orders of magnitude less than an incomprehensibly short amount of time- I'm not even familiar with anything that falls between that and the Planck time, except maybe some stage of the Big Bang timeline. How do researchers figure out the half lives of isotopes of hydrogen that are on the yoctosecond time scale? [link] [comments]  |
| Posted: 07 Mar 2016 06:25 PM PST I found this article published on Arxiv which claims to have found room-temperature superconductors. Obviously Arxiv is self-published and not as reliable as peer-reviewed journals, and the author withholds the exact composition and synthesis processes due to a "pending patent", but is there any chance this is real? [link] [comments]  |
| Posted: 07 Mar 2016 08:58 PM PST |
| Posted: 07 Mar 2016 11:10 PM PST |
| Posted: 07 Mar 2016 11:58 PM PST LA -> NY: 4463.2 kilometers, using current roads as an approximation of the hyperloop's path. EDIT: I'd love to set the flair as both physics and engineering =/ [link] [comments]  |
| Is it possible to slow down radioactive decay through cooling? Posted: 07 Mar 2016 06:54 PM PST Would it be possible to cool an element to where it will slow down the radioactive decay. [link] [comments]  |
| Is it possible for a spinning black hole to stop spinning and become a non rotating black hole? Posted: 08 Mar 2016 12:17 AM PST Is it possible for a spinning black hole to just stop spinning but otherwise continue to be a black hole? [link] [comments]  |
| Posted: 07 Mar 2016 10:00 PM PST Any articles or papers you could provide on the subject would be greatly appreciated!!! [link] [comments]  |
| What stops an electron from falling into the protons within an atom? Posted: 08 Mar 2016 02:36 AM PST what stops the negatively charged atom from being attracted and falling towards the positively charged protons? [link] [comments]  |
| Posted: 08 Mar 2016 04:34 AM PST I'm asking this in relation to using the earths core as a source of electricity. Somehow if we are able to do it, would the flow of electrons out of this source mean there will be long term changes made to the earths physical core? Or is this anyway already happening whether or not we harness this energy? (Please pardon my ignorance, I'm making an assumption that the core can actually be used as a source of electrical energy like this, please correct me there if I'm wrong, but the original question is about the flow of electrons from a source and its repercussions to the source if any). Thanks! [link] [comments]  |
| Posted: 08 Mar 2016 05:41 AM PST |
| Are certain types of ailments or illnesses more prone to being cured by placebos than others? Posted: 07 Mar 2016 08:52 PM PST |
| Posted: 07 Mar 2016 11:43 AM PST My friend is pregnant and it's really interesting. Also if the proximate cause is something like, the body started producing some chemical then what is the cause of that? (I don't wanna keep asking why, but i figured it would be interesting for at least a few layers) So in joke terms, how does the body know the bun is done cooking? EDIT: I'm not only interested in humans, so if a scientist who studies other mammals knows about that I'd be down to hear about it. [link] [comments]  |
| Is Visuo-spatial intelligence part of Fluid intelligence? Posted: 07 Mar 2016 05:58 PM PST Fluid intelligence is not thoroughly defined. For example, a lot of visual matrices that involve mental rotation are supposed indicator of Fluid intelligence. However if they also measure visual memory and mental rotation, are they not also measuring visuo-spatial intelligence? If so, does that mean Gv is part of Gf? [link] [comments]  |
| Why is Pluto not considered a planet? Posted: 08 Mar 2016 03:04 AM PST Pluto is considered as a dwarf planet. Earlier it was included in the list of planets then why now it is not in the list? Does it lack the qualities needed for a celestial body to be a planet? If yes, then what qualities? [link] [comments]  |
| How do OCPs treat endometriosis? Posted: 07 Mar 2016 06:39 PM PST I'm getting a little confused on female reproductive hormones. This is what I think I know: FSH --> follicle growth --> increased estrogen --> endometrial growth LH surge --> ovulation --> formation of corpus luteum --> secretion of estrogen and progesterone progesterone:
So progesterone contraceptives treat endometriosis by blocking estrogen-driven growth of endometrium? This brings me to two more questions:
estrogen --> down regulation of FSH and LH --> prevention of follicular growth and ovulation? progesterone --> prevention of estrogen driven endometrial growth?
corpus luteum dies --> decrease in progesterone --> increase in prostaglandins --> vasoconstriction --> endometrium dies off? does the drop in estrogen play a role in menses? Thanks for any help [link] [comments]  |
| Posted: 08 Mar 2016 01:55 AM PST |
| How does gravity/relativity impact my ability to see something? Posted: 07 Mar 2016 03:51 PM PST In the film Interstellar they visit a planet near a black hole. One crew member stays behind on the ship, and time moves differently for him then those on the planet (1 hour on the planet is 7 years for the person on the ship). If he had a telescope strong enough to see the surface of the planet, what would he see? [link] [comments]  |
| What things in nature are always almost the same size? Posted: 07 Mar 2016 08:09 PM PST in ancient and medival times things were often measured by body parts. although that was practical measures vary from person to person. later there were prototype measures but those are arbitrary, difficult to copy exactly and not replaceable when lost. are there non microscopic features in plants, animals or materials that always are always the same size and only differ by a very small amount? if not are there simple experiments that allow to create a measure with primitive technology? [link] [comments]  |
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