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Function

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Everything posted by Function

  1. But it is accepted that it has zero mass? Or is there a consensus for an infinitesimal small mass?
  2. I am no physicist at all, and I know nothing about the deep fundamental theorems aimed at in this thread. But I've understood that indeed, waves are massless. Is that consensus? Or has it truly been proven that photons are massless?
  3. Compliance seems rather a challenge of phase 3 and 4 studies; to a lesser degree phase 2. Bioavailability, plasma half-life would seem phase 2 to me, and side-effects actually phase 1 or 2: some side-effects may already be observed in a preclinical phase in laboratory animals. Efficacy is typically phase 3, whereas efficiency (cost-effectiveness) applies to phase 4 studies ... Of course, the degree to which you may or may not extrapolate your results is a huge problem in phase 2 and 3 studies.
  4. Function

    Vectors

    Pardon me? This isn't a Q&A House rules dictate you must show us what work you've done yourself already in order to solve the problem ...DrK was very generous in already giving you some hints etc. so you might just skip that. Anyway, just noting that in the future, you might just want to show us what you know on the subject and on the specific problem. We don't know what your strengths/weaknesses are and if we don't know these, we can't form a "personal fitted" answer.
  5. You see, I have no problem at all with age; even when a five-year old were to come here with some statements I'd be delighted to listen to them and think about them. We've put a lot of thought in this matter, but it seems as if we're all missing the point here. If she were to be miseducated (a serious problem), then there's no way you could tell whether she genuinely is seeing the colours swapped, or she's just giving them other names and refusing to call them by their proper name. So when she looks at the sun, she says its green? There's nothing wrong with my eyes, but I wouldn't even call it yellow, rather white, when staring into it (just don't do this for a respectable time), which would imply that she's even mistaking white for green. And then you've got to be kidding us and she just has no red or blue cones. Which is not the case. If you genuinely feel like there's something new, bizarre, going on here, since this forum is based on evidence, and there doesn't seem to be proper evidence (yet) on the problem you describe here, I suggest you take her to a neurologist or a neuro-ophthalmologist. At least someone with a good sense of neuroscience. If you don't feel like taking that step, I feel like you're messing with us and this is a call for attention rather than a call for help, because truly, we can't help you or her whatsoever. Even more, we aren't allowed to (house rules). Here's another image. It's a package of an antihistaminicum I take. As you can see, it has a gradient from full yellow to lighter, faded yellow. As stated by you before, she should see lighter shades of yellow correctly and darker/brighter shades as green. Could you present to her this image and ask her exactly on which point she sees a transition from green (left) to yellow (right)? Is it a transitional field, gradually transitioning from green to yellow, or is the transition rather abrupt? If it's an abrupt transition, ask her on which letter, for instance, the transition is located (e.g. "the ®" from "Cetirizine EG®"). If it's not abrupt, but rather a gradual transition, ask her on which point she'd define according to her subjective interpretation, her point of transition from green to yellow.
  6. Whatever lies at the bottom of this intrigues me: either neuro-ophthalmology, psychology or a prank that has been going on for a bit too long for what it's worth. I'm going for one of the last 2 options. Subscribing to this post By the way, if she really said the gray-greenish-blackish-whateverkindofcolour top of the hat is brighter than the flashy yellow part of the hat, then it doesn't seem like a green-yellow colour swap to me and it seems like their parents most surely did have a great fun time of mis-educating her - if that would be the case, that'd be a serious offense to me and should be punishable by law. But I'm not insinuating they did.
  7. Am I the only one who finds it a problem that it's a BA and not a BS? In Belgium, it's a BS in Psychology ... That aside, there's tons of opportunities ... But ... I'd advise you to get a Master in Psychology, too. Why stop at a bachelor's degree? Psychology is a wonderful science and there's few other sciences that give the satisfaction psychology does when known well enough and when mastered. But don't let me push you into something. You could indeed already start finding work, but I'm not sure if you're legally allowed to call yourself a psychologist after you get a BA? I'm not entirely sure, but my guess would be you'd have to get a master in psychology before you could be certified as a psychologist, in Belgium, that is (still, not sure). There's lots of opportunities: you could specialise in clinical psychology, experimental psychology, ... The old adagio goes that Google is your best friend. I think that also for this problem, you'd best Google your question a first time and come back when you have and should have more questions ... Welcome to the Science Forums.
  8. Give her both a yellow and a green fluorescent marker. Ask her which one is brightest ... This is very subjective, but it seems like the only way to me to really know whether she doesn't know the name of the colours, or truly has some sort of colour swap thing going on in her brains (because really, her eyes are fine). I think most of us would agree saying the yellow fluorescent marker is brightest, aye? So if she says the green fluorescent marker is brighter, there's this little chance that indeed, there's some wicked spooky crazy magician stuff going on in her brains. Then consider consulting a neurologist or, indeed, a neuro-ophthalmologist. How old is she?
  9. I'm not 100% sure, but common sense (or some physiology-sense) says that NaCl flows together with water so this would lead me to think that there's just a lot more of NaCl in sweat than glucose ...
  10. So the unity charge of the particle doesn't matter (+ or -), as long as it's charged? It's just for a figure in my thesis; I should know whether a counterclockwise spinning proton would have its magnetic field vector point inwards or outwards ... Conventionally seen
  11. Hello everyone I basically get the hang of MRI, but I'm left with one small - not all too important - question: Although protons do not genuinly spin, creating their own cute little magnetic dipole, let's consider they do, for simplicity. Does the right-hand rule apply to protons? Or electrons? As in: consider a proton spinning in the plane of your computer screen, in a counterclockwise sense. Does the magnetic dipole inducted by its spin point out of your screen? Or inwards? Is the contrary true for electrons? (Not important in MRI, but just curious; physics is a great while ago) Thanks. Function
  12. How about just making "smoking age" nonexistant? I mean, now, it can still be something like: "Ooh, I'll turn 16 tomorrow, imagine what I can do next: drink (at least, beers and whine etc. in Belgium), drive (at least, not in Belgium, lol), have sex (I guess, everywhere?) and smoke (at least, I think, mostly everywhere)!" Just to make it less ... exciting and exotic? It has been demonstrated a few times I guess that a paternalistic approach "Thou shalt not smoke" has a contrary effect. Abolishing the so-called "smoking age" could be an interesting experiment to see what numbers of smoking proportions do. If they should indeed fall significantly, we could be a step closer to prohibiting smoking in public (less whining).
  13. One day we all came here to learn from one another, and it doesn't matter what we already do or do not know. Most of us still seek others' knowledge here by asking questions in topics and most of us share their knowledge with others when asked; again - no matter what we already do or don't know. There's always someone willing to explain anything to you - from very basic to very advanced. We all had and have to start somewhere. Please feel welcome to Science Forums.
  14. Are there studies standardises for anything (well maybe not everything but at least income and other obvious Third World v. First World differences) but skin colour? If so - what I'd doubt - then I'd love to see the results of those studies and I'd love to witness that STDs occur evenly in all races.
  15. Thanks everyone! It indeed seems best to omit any middle initials.
  16. We got a lesson on pain by a professor in neurology last year, and indeed the only way accupuncture may work somehow, is the stimulation of the µ-opioid receptors ...
  17. Welcome to the greatest science forum on the entire internet. I am unsure on what you mean with "migration", since lots of these steps are, in fact, migration ... If I tell you a tumour most likely will induce angiogenesis in hypoxic circumstances, can you start forming a chronologic order? When will a tumour be hypoxic? When can intravasation take place? What happens between intravasation and extravasation? ...
  18. This thread resembles a lot of medicines when it comes to adverse effects Headache, nausea, gastro-intestinal complaints, vomiting, ...
  19. So you would call a professor in neurosurgery Prof. Dr Mr Firstname A. Lastname?
  20. Hello everyone Writing my thesis, I was wondering certain things on mentioning myself, my supervisors, co-supervisors and advisor (I'll call them all my supervisors henceforth): Situation: Some of my supervisors have one or multiple middle names. All of my supervisors are physicians. Some of my supervisors are a professor. My other supervisors are PhD candidates. I have to mention all of them multiple times in quite official pages:Cover page Myself without anyone else on a 'sec' title page, with only title and author (p. i) Title page (p. iii) (identical to the cover page) P. iv, giving an overview of author, supervisors, co-supervisor, advisor and commissioner of the examination board and details on the research group Signature page (p. v) In other pages, I just mention them by name (e.g. "Professor Firstname Lastname, neurosurgeon" for the profs, "Firstname Lastname, radiologist" for the non-profs) How should I mention these persons on the pages given above? Is it overkill to mention all of their middle initials and all of their titles everytime I mention them on these pages? Is it overkill to include all of my 3 middle initials and state BSc after my name? Is it in my place to do so? Should I omit my middle initials and BSc title in the 'sec' title page? (Btw, 'sec' refers to the French word for 'dry') Perhaps influencing the choice: I've already included all of my middle initials in a manuscript for a research I participated in, filed at the Journal of Neuroscience ... My university doesn't provide any guidelines on these matters and the persons in question couldn't care less so I was wondering which was appropriate ... I'm aiming to write my thesis in a British English fashion, should this influence anything ... If I have to include multiple middle initials, I divide them with a "hair space" (Firstname A.[hair space]A. Lastname), is this appropriate? Concerning the titles: make a choice, considering British English: For the professors: Prof. Firstname Lastname, MD, PhD / Prof. Firstname Lastname, MD, PhD, DMSc / Prof. Dr Firstname Lastname, MBBS, DMSc / ... For the others: Firstname Lastname, MD, PhDc / Firstname Lastname, MD / Firstname Lastname, MBBS, PhDc / ... So briefly: what are the correct titles in British English? Is "MD" an acceptable alternative for MBBS? When should I omit titles and middle initials? When should I include all? How (in)appropriate is it to mention both PhD and DMSc? What with periods? MD vs. M.D.? PhD vs. Ph.D.? BSc vs. B.Sc.? DMSc vs. D.M.Sc.? Thanks for your opinions (for I doubt there are guidelines on these kinds of matter). Functionella
  21. I'd be stupified if it weren't possible in the US?
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