Do individuals who appear older or younger than their biological age live a shorter or longer lifespan, respectively? |
- Do individuals who appear older or younger than their biological age live a shorter or longer lifespan, respectively?
- How much of the electricity that a computer uses is converted into heat? And how efficiently does a computer transfer that heat into the surrounding air?
- Does Neosporin and other topical antibioitics breed anti-biotic resistance?
- Why Moderna half dose and not a full dose for the booster?
- How do deciduous trees exchange gases in the winter?
- Weird question but is the mylohyoid muscle denser or less denser than the digastric muscle? I've been researching this for a while now
- What does the most up to date studies say about the efficacy of Remdisivir?
- With all the talk of travel at the speed of light, isn't a major concern colliding with objects?
- Why aren't Xylems and Phloems one single tissue?
- Could the supply of exogenous pregnenolone in supraphysiological doses suppress the hypothalamus-pituitary-adrenal axis (and possibly other systems) in humans?
- I read human tooth crown tissue is unique compared to other primitive people. What makes it unique?
| Posted: 07 Dec 2021 07:43 AM PST I understand there are various confounding variables (ex. those appearing older than stated age may smoke, drink, have a poorly balanced diet, etc.) but if those factors are controlled as much as possible, is there a correlation between appearing age and life expectancy? Love this community, interested to hear your perspectives and knowledge! [link] [comments] |
| Posted: 07 Dec 2021 02:13 PM PST This is something I have wondered for a while. I have heard some tech reviewers and outlets claim that all the energy consumed by a computer is converted into heat. Is that true? Shouldn't some amount of energy go towards computing the information? A second question is, how efficient is a computer at transferring that heat to the surrounding air compared to a typical electric furnace in a house? That is to say, could I heat a house more efficiently with computers than with your standard electric furnace? I have also heard it claimed online that computers are more efficient at transferring heat to the air than a furnace, but I am unsure of how much truth there is in this. [link] [comments] |
| Does Neosporin and other topical antibioitics breed anti-biotic resistance? Posted: 07 Dec 2021 11:18 AM PST |
| Why Moderna half dose and not a full dose for the booster? Posted: 07 Dec 2021 06:25 AM PST |
| How do deciduous trees exchange gases in the winter? Posted: 07 Dec 2021 09:03 AM PST Leaf do gas exchange, but without leaf how do Seriously though, I don't know what to think. Diffusion through the bark? Oxygen tanks? They must need oxygen to respire aerobically or trees would be filled with ethanol by the spring. [link] [comments] |
| Posted: 07 Dec 2021 03:52 AM PST |
| What does the most up to date studies say about the efficacy of Remdisivir? Posted: 07 Dec 2021 09:13 AM PST I have been poking around at the efficacy of Remdisivir for COVID 19 and I have been finding some conflicting statements in the research so I was hoping if people more knowledgeable could explain to me or point me in the right direction to see what the medical science says currently about Remdisivir. [link] [comments] |
| With all the talk of travel at the speed of light, isn't a major concern colliding with objects? Posted: 07 Dec 2021 08:19 AM PST If you are traveling at the speed of light and hit even a small object in space it would be catastrophic I assume. Has anyone given any thought to this aspect of travelling so fast? Thanks. [link] [comments] |
| Why aren't Xylems and Phloems one single tissue? Posted: 07 Dec 2021 02:51 AM PST A tissue is defined as a collection of cells that have the same origin, function and structure. Xylems and phloems have similar structure, and they both originate from primary meristem cells. Now, one of them carries nutrients from the root to leaf cells, and the other one carries food from leaves to the whole plant. These are said to be "different functions", but my question is how dissimilar do two functions have to be to be considered different? Can't I argue these are similar enough that we can call them the same anyways? Is there a rigid definition for " similar function"? ( I'm probably overthinking this but yeah...) [link] [comments] |
| Posted: 07 Dec 2021 04:04 AM PST As I understand it, exogenous glucocorticoids (such as hydrocortisone or prednisone) can suppress the HPA axis because binding of the glucocorticoid receptor provides a negative feedback on CRH and ACTH release. There seems to be some evidence that pregnenolone, thought to be a completely inactive steroid precursor only, can have similar effects on the brain. https://pubmed.ncbi.nlm.nih.gov/21273660/ From the above (in vitro) study: "...In the present study, we found that some neurosteroids in a concentration-dependent manner inhibited CRH gene promoter activity in the differentiated Neuro-2A cells. Among investigated neurosteroids, PGL [pregnenolone], the main precursor of steroid hormones, exerted the most potent effect. ALLO and THDOC, two potent endogenous positive modulators of the GABA receptors had only a little weaker inhibitory effect than PGL on CRH activity. It is likely that the inhibitory effect of ALLO and THDOC on CRH gene transcription may be implicated in the mechanism of their anxiolytic action." Does anybody have any thoughts on this? [link] [comments] |
| I read human tooth crown tissue is unique compared to other primitive people. What makes it unique? Posted: 07 Dec 2021 12:31 AM PST
[link] [comments] |
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